to success
since 1997

Distributor / authorized representative that deals with supply & delivery of gas purification filters and systems to industrial enterprises of Russia

Engineering company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), Russia, has been successfully working with a number of Russian industrial enterprises at the local market for more than 20 years. Since the company’s founding, it has acquired immense engineering experience, market reputation, and has realized more than a hundred large-scale projects at the industrial plants in Russia. Our company is continuously in search of new business partners, who consider Russian market investment-attractive and want to boost their sales in the region, as well as expand their field of activities and enter a new international level.

We are interested in cooperation with the manufacturers of gas purification systems, who are looking for an official and reliable distributor to deal with supply & delivery of their equipment to the industrial plants in Russia.

The company’s top management and sales team are well acquainted with the Russian market, its mentality and laws; they also understand industrial specifics of the financial and economic activities of the Russian customers. All our sales managers have a large customer database, extensive experience of successful sales and well-established connections with the potential buyers of your gas purification filters. This allows our managers to promptly set out the most promising directions for promotion and to ensure a rapid entry of the products into the promising Russian market. Our employees, who are fluent in English and German, are focused on working at the international market with the supplies of foreign equipment.

Our team of experienced engineers, who can handle the most serious technical problems, constantly keeps in touch with the Russian customers, holds meetings and delivers presentations regarding the latest achievements of our manufacturing partners. They point out the engineering challenges and actively communicate with all the departments at Russian plants. That is why the specifics of doing a business in the Russian Federation are well-known to us, and we also know the equipment of the local industrial plants and their up-to-date modernization needs.

Once we become your authorized representative in Russia, our marketing staff will carry out a market research in order to check the demand for gas purification filters and systems, will submit a market overview for gas purification systems that you offer and evaluate the needs for this type of equipment at local plants. Our specialists will also estimate the potential and capacity of this market at local industrial plants. Our IT-team will start developing a website for your products in Russian. Our experts will assess the conformity between your gas purification filters and customer needs as well as analyze the common reaction to the new goods in general. We will look into the categories of potential customers, and pick out the largest and the most promising plants.

Upon becoming your authorized agent on the territory of Russia, ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will obtain certificates, if required, for a batch of the goods, for various types of gas purification filters and systems in compliance with Russian standards. We can also arrange the inspection in order to obtain TR TS 010 and TR TS 012 Certificates. These certificates provides permission to operate your equipment at all industrial plants of the EAEU countries (Russia, Kazakhstan, Belarus, Armenia, Kyrgyzstan), including the hazardous industrial facilities. Our company is eager to assist in issuing Technical Passports for gas purification filters as per Russian and other EAEU countries’ requirements.

Our engineering company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), collaborates with several Russian design institutes in various industrial segments, which allows us to conduct preliminary design as well as subsequent design works according to the standards, construction rules and regulations that are applicable in Russia and other CIS countries. It also enables us to include your gas purification filters into the future projects.

The Company has its own logistics department that can provide packing service, handling as well as the most efficient and cost effective mode of transportation of the goods (incl. over dimensional and overweight goods). The goods can be delivered on DAP or DDP-customer’s warehouse basis in full compliance with all the relevant regulations and requirements that are applicable on the Russian market.

Our company has its own certified specialists who will carry out installation supervision and commissioning of the delivered equipment, as well as further guarantee and post-guarantee maintenance of gas purification filters and systems. They will also provide necessary training and guidance for the customer’s personnel.

Gas purification filters and systems. A brief overwiew

Gas treatment systems general description

Protection of natural resources and airspace against emissions of industrial enterprises is connected with the range of environmental problems, the solution of which guarantees the security of the planet as a whole. Gas-treatment and dust-collecting plants and complete systems are developed and applied to solve these problems, and nowadays demand for them grows every year and they are a part of a smooth-functioning operation. The rapid intensive development of industrial production promotes expansion and diversity of technological processes related to emission of huge amounts of mixtures containing dust and gas into the atmosphere. Nowadays it is obligatory for enterprises of food processing and consumer goods industry, iron-and-steel works, cement and chemical production, recovery enterprises to have gas and dust-collecting equipment. The issue of the exhaust gases treatment is forwarded to one of the first places by strict requirements to the operation of industrial plants. In this regard, this issue is becoming increasingly important in various industries, and gas treatment equipment is becoming increasingly eagerly sought. Questions of gas treatment are related to problems which are the whole world’s concern for many years. In the 20’s of the last century the first industrial electrostatic precipitators for gas purification have been developed and installed, and which even at that time have demonstrated their effectiveness. When progressing, increased production capacities required the implementation of new ideas during development and improvement of gas treatment facilities. At the end of XX-th century, gas purification plants of new generation for treatment of gas flow having volume of millions of cubic meters per hour have been developed and put into operation. Gas treatment technological processes developed nowadays not only reduce the burden on the environment, but also solve the issues of rational use of natural resources.

Industrial plants and other enterprises are connected with the discharge of various substances into the atmosphere and indoors, which causes great damage to the environment. Aerosol particles in the form of dust, smoke, fog and gas, as well as vapor, various kinds of microorganisms and radioactive components may enter the air.

Nowadays, air purification is very important in terms of sanitary and hygiene, in environmental and economic matters, and for almost all industrial production enterprises it is perhaps the main event to protect air from pollutants and contaminants, measure that contributes to gas mixtures purification before discharging them.

What is gas purification? This is primarily gas mixture purification from various impurities before discharging it into the atmosphere. This is produced in compliance with the sanitary conditions in the areas located close to the industrial facility, in order to prepare gases for their further use as a chemical raw material or fuel. Impurities themselves are used as valuable products.

Gas treatment is divided into:

  • purification from suspended particles in the form of dust, mist;
  • gas purification in vapor and gaseous states from impurities, which are undesirable during their further use or discharging.

The process of hazardous substances collection in industrial gas emissions is divided into the industrial gas purification for its emissions utilization (as well as return of safe product separated from gas to the production), and for sanitary treatment of gas emissions from the residual content of dangerous substances in them, providing thus air quality. Selection of design of equipment used for gas purifying and purification technology depends upon the nature of the production process, composition of the exhaust gases, required degree of purification, etc.

Gas treatment methods

Methods of gas treatment used in industry can be divided into three main groups:

  1. using of solid absorbents or catalysts, representing the "dry methods" of purification;
  2. using of liquid absorbents (absorbers), representing liquid purification method;
  3. purification methods without use of catalysts and absorbents.

The first group of purification methods represents adsorption, chemical reaction with solid absorbents or transformation of impurities using catalyst method into harmless, easily removable compounds. The layer of sorbing agent, absorbent or a catalyst is regenerated or replaced from time to time. Liquid methods of second group of methods are based on extraction of pollutant using liquid sorbing agent in a form of solvent. Condensation or cleansing of impurities based on diffusion processes is produced when using the third group of purification methods.

Diffusion processes are represented, for example, by thermal diffusion, separation through a porous membrane.

Industrial gases contain particles, which are very different in composition, state of aggregation, and have different degrees of dispersion. Gases are purified from suspended particles by mechanical and electrostatic methods. When mechanical treatment is used, gases are affected by centrifugal forces; filtration through porous materials, washing with water or other liquids is produced. Mechanical treatment of gases represents a dry gas purification (using cyclone separators), filtration, and methods of water scrubbing. Dust particles of high dispersion are collected with the help of electric gas purifying, achieving a high decontamination factor.

Gas treatment facilities include equipment for preparing air coming from the production plant. Nowadays none of manufacture can operate in a non-waste mode, and if there are no material wastes, the emission of harmful components into the atmosphere is almost universally available. It further tightens environmental requirements for industrial enterprises connected with emissions treatment and leads to the fact that such enterprises must be equipped with special equipment for emissions treatment. This equipment is represented by a special gas-treatment unit, containing the whole complex, consisting of a series of actions and functions on purification of air from harmful particles, aimed at the full decontamination and neutralization during the purification process.

Gas treatment equipment can be designed for enterprise in whole that is to be of an inflow - recirculation nature: to be purpose-designed, i.e. to be intended for treatment of non-specific emissions; and, finally, to be equipment designated for testing. When distinguishing by application, gas-treatment equipment can be stationary or mobile, moved in case of location of its use changing.

Gas treatment facilities of dry gas treatment group include different types of dust collectors and smoke extractor plants. Gas scrubbers and gas washing devices are used when purifying gases from dust particles and harmful impurities by means of "wet" methods.

Filters, purifying gases from all kinds of contaminants by means of fabric filtration elements are the next gas step of purification in the gas treatment plant. The electric filtration elements performing the next step of purification can be used both in “dry” and “wet” gas purification methods. Chemical cleaners are the next device in the gas treatment plants where gas purification operations are carried out using chemicals.

Thermal devices, treating hazardous emissions by means of hot purification produce final step in gas purification. All the above groups represent gas treatment facility, carrying out purification stage by stage and influencing contaminated or exhaust gases in various ways to convert the latter into a harmless product. Installation and maintenance of these units should be performed only by highly qualified specialists, possessing the necessary knowledge in this area. Capacity of gas-treatment unit is evaluated by volume of the purified gas at a given time interval. All the production facilities must be equipped with gas treatment plants in order to maintain an acceptable level of environmental purity.

Properly organized dust collection solves environmental problems complying with MAC standards. Inefficient work of gas-treatment equipment at enterprise, including air pollutant emissions, emission values of which are outside the preset limit, may result in the environmental tax paying by the company, which can be costly for the company and have a negative impact on its activities in whole.

Special effective filters and filtering installations have been developed for the purpose of purification of industrial gases from impurities (ash, dust and other solids). Use of electrostatic settling of solid particles, present in gases, filtration through porous layers and membranes, gases washing and particles separation by gravity represent the basic principle of their operation. This is an inertial separation. Individual gas treatment plant, design of which is determined by the nature of the production process, by the type of pollution and the amount of emissions, is required for each type of production process.

Types and kinds of gas-treatment plants

Gas purification aims to perform the following tasks:

  • Usage of only gas;
  • Usage of only individual valuable gas impurities;
  • Gas purification from hazardous impurities before discharging into the atmosphere.

Designing and development of new gas treatment technologies allow to use the high-efficiency gas treatment equipment, such as bag filters, electrostatic precipitators, wet scrubbers, Venturi scrubbers.

Bag filters are the simplest devices in the form of a fabric "bag" with a tightly sewn base. Cloth bags of fiber-optic material are inserted into casing-base, allowing to bring the treatment of industrial gases and aspiration air to minimum values of between 5 and 10 mg/nm3, when using the method of filtration through a porous surface. Dirt particles are retained on the porous membranes of filtering material, on the surface of which dust layer is formed, serving itself as filter medium.

Purification filtration method is the main competitor to electrostatic treatment. Its equipment can be used when upgrading treatment facilities using electrostatic precipitators.

The choice of various filtering material offered nowadays by domestic and foreign markets is determined by index of purification efficiency by bag filters, resistant to high temperature (250°C or more) and having a high reliability and resistance against aggressive media. The service life of filtration element amounts to 3 to 10 years.

Explosive dust and gas mixtures can be purified with bag filters, after providing them for this with rupture plates or with devices for explosion damping. They can be equipped with filtration elements of circular and oval shape, with possible shutdown of sections or without shutdown of sections, with vertical and horizontal positioning of filtration elements.

Cyclone separators are devices for inertial gas purification, and as there is a high demand in industry for them, they provide fast and reliable gas purification. It is achieved under the centrifugal force on the gas. As per design cyclone separator is a vessel of a cylindrical shape with a conical bottom, where the exhaust pipe is located. Gas is fed into cyclone separator along the pipeline. Rotating around the exhaust pipe of the pipeline, gas throws solid particles with greater weight towards the periphery under the influence of centrifugal force. Particles, adhering to the walls of the cyclone separator are poured out its conical part.

Gas leaves the cyclone separator through the exhaust pipe after purification is finished, and solid particles, accumulated in the conical part of the cyclone separator, are periodically removed through the branch pipe.

Deposition of particles occurs during inertial gas treatment when weight of particles or their speed of movement is that it becomes impossible for them to move together with the gas in the flow direction. Particles, colliding with an obstacle, become deposited on it under the influence of inertial forces, and gas flow continues to move, bypassing this obstacle. Devices for inertial purification are used for pre-treatment, for pneumatic transport system unloading, and function as spark arresters. Today there is a large choice of cyclone separators of different designs at the market of gas treatment equipment for gas purification: individual cyclone separators, gang cyclone separators, multicyclone collectors, uniflow cyclone separators, etc. However, one should not forget that cyclone separators cannot serve as a final purification step, because they cannot collect particles smaller than 5-7 microns and, in addition, they have a significant flow resistance.

Let us consider the electrodeposition method, which consists in the fact that small droplets and particles are charged by gas ions of high voltage field, and afterwards they move to an earthed collector electrode. After having achieved the electrode, the particles stick to it, and get discharged. As the collector electrode is covered with a layer of particles, they are shaken by tapping into the hopper. The system, however, is not considered to be completely static, as charges carried by gas ions and particles produce low current. Therefore, many researchers decided to determine this type of device as "electrostatic collector". Gases are purified by electrostatic precipitators in very large amounts without risk of explosion. Fly ash is collected by them in modern power plants, in boilers of which pulverized fuel is burnt, dust is collected in the cement and metallurgical industries during smoke collecting, mist particles droplets (tar, phosphoric acid, sulfuric acid) are collected in the chemical industry.

Gas purification by electrostatic precipitators is the most common method of gas and gas mixtures treatment in our country due to their long service life, and they are at the first place among all available treatment systems in the domestic power industry. But ESPs are not used for explosion hazardous environments purification.

Efficiency of purification in electrostatic precipitators is bly influenced by choice of high voltage power supplies, which can be single-phase, three-phase and high-frequency devices of foreign production with voltages from 50 to 150 kV and currents from 100 mA to 4000 mA. The efficiency of the treatment process can be significantly improved by them or the size of electrostatic precipitators can be significantly reduced through the use of them.

It is feasible to use electrostatic precipitators for large volumes of gas purification. The disadvantages of the electrostatic precipitators include their high price, sensitivity of the electrostatic purification process to deviations from the preset parameters of the process, and mechanical defects of component parts of the equipment.

Other positive aspects of the electric dust collection include:

  • possible operation at temperatures up to 425°C;
  • operation of the electrostatic precipitator in an environment with excessive humidification;
  • possible mode of operation of electrostatic precipitator in an aggressive environment;
  • possible mode of operation of electrostatic precipitator for extended periods of time at high process parameters;
  • low hydraulic resistance (~ 200 Pa);
  • low operating costs;
  • simple maintenance;
  • reliability of assemblies and mechanisms of electrostatic precipitator.

The process of water scrubbing is a purely mechanical process used at the final cooling step. All impurities are removed from gas by means of this method. It is achieved by the condensation of heavier vapor particles. Scrubbers of various designs are used for gas washing by liquids. They are widely used for coking products collecting and for gas purification from dust, for gases humidifying and cooling them during chemical-technological processes. One or more components are extracted during purification.

An intensive fragmentation of liquid contacting with the gas takes place in Venturi scrubber. It occurs due to the high velocity of gas flow in the Venturi separator which has a shape of a Venturi tube. Its design includes separator, which is sometimes replaced by droplet separators and cyclone separators of short version. Venturi scrubbers are used for treatment purposes in dust particles collecting during gases cooling or absorption. Venturi scrubber’s operation is that gas is fed into confuser for purification, then it is transferred towards the tube throat, velocity of gas movement increases, gas is mixed with washing liquid and dust is deposited on droplets when entering the diffuser. Separation occurs in droplet separator, whereby liquid flow rate does not exceed the flow rate of dust. Venturi scrubber can be used for primary gas purification, finding great demand in the iron-and-steel industry, non-ferrous metallurgy, chemistry, power industry.

Gas velocity in the throat of the Venturi scrubber may reach 430 km/h. Rapid wear of scrubber walls occurs when solid particles and liquid droplets are moving at such a rate, which is a drawback of scrubbers design.

Dust collectors

Dust collectors represent devices designed to collect dust and small particles of mechanical content and other impurities from the air flow during operation of exhaust and suction devices in the gas treatment plants and pneumatic devices. Such systems are widely used in applications where machines are installed and it is necessary to collect micro particles arising from the operation of the machines and going into the air. Dust collectors are categorized depending on the types of their operation and on their purpose:

  • gravitational dust collectors;
  • inertial units;
  • contact dust collectors;
  • electric dust collectors.

Gravitational dust collectors represent devices based on the force of gravity, making particles of dust and impurities settle from air that dust collectors are treating. These include dust precipitation chambers, with which industrial ventilation and gas purification systems are equipped. They are considered the most suitable for large-scale industrial plants, because they can collect large dust particles and impurities. Dust precipitation chambers can be of once-through, labyrinth and tray type.

Inertial dust collectors can be of wet or dry action, as determined by their operation.

Wet dust collectors (scrubbers), based on the action of centrifugal force, were briefly mentioned above. Cyclone separators represent another sort of them, operating principle of which is based on washing. They moisturize the air, thus dust becomes heavy and precipitates. A tank of water is required to operate such a device. Water in this tank shall be under pressure.

Dry inertial dust collectors are operated also based on the principle of centrifugal force, but their operation is similar to the fans operation when the air is freed from dust and impurities by shaking.

So, each type of production requires its own gas treatment facility or installation, the design concept of which will be determined by the type of industrial production and the nature and content of polluted emissions. Solving of the following tasks is provided during gas purification:

  • usage of purified gas;
  • usage of valuable impurities separated from gas and used separately from it;
  • process of gas neutralization before discharging it into the atmosphere.

Gas purification system has its own formula representing the difference between gas release into the atmosphere with impurities and amount of wastes, collected by gas-purifying devices. This difference should be close to zero.

Vapor recovery by means of solid sorbents such as carbon, silica gel, many of zeolites or ion exchangers is considered today to be a relatively promising method of gas purification. The lower limit of the concentration of economic profitability of recovery units depends on the cost of collected component and power characteristic of the plant itself, and, as a rule, can be from 1.5 to 4.5 g/m³. In this scenario, the payback period of the unit may take several months or even years. But even so, the use of recovery systems sometimes advisable even at low initial concentrations, since it allows to pay back the operating costs (partially or completely).

Modern production is constantly developing, requiring a corresponding progress in the technical outfit of gas-treatment equipment. Intensification of processes of steel production, for example, the use of oxygen injection, has given gas treatment completely new tasks. This also relates to the modern trends in unit capacity increasing of industrial facilities in all industries. Existing gas purification systems are quite good, but they are not applicable for this purpose, because of lack of power. Qualitatively new solutions are required in these cases. When looking for waste products application do not forget about the main goal of all the gas treatment measures, which is the protection of the environment and, above all, the protection of human life from the harmful effects of gas emissions. Application of the extracted impurities and particles as industrial products is also connected with the problems in meeting the requirements in respect of concentration and purification of these products. Each compound has its limit in the degree of purity and concentration after gaining which meaningful extraction of this compound becomes economically profitable. Values of optimum concentration and maximum allowable concentration are not always one and the same exponent, sometimes there is a very big difference between them. So that the safety requirements are considered as determining during purification of exhaust gases.

Gas treatment process plants exhausting gases after purification into the atmosphere are simultaneously considered as sanitary gas treatment equipment. In some cases, the question of process gas treatment equipment counting as the sanitation facilities is decided in situ by authorities of State inspection agency for gas treatment together with the enterprise mangers.

Nowadays the problem of harmful emissions getting into the atmosphere, and the question of their reduction is decided in various ways, and the improvement of the technological processes in the production is considered to be one of them. For example, work on the creation and implementation of low-waste or no-waste technologies is continuing with broad and effective use of methods of dust and gas purification of emissions in production. Usage of fuel or raw materials containing a small amount of harmful impurities entering the atmosphere is considered to be one of the important directions in deciding of these issues. Great attention is paid to the preliminary preparation or enrichment of fuel or raw materials, in order to reduce content of these impurities in them. Machine-building enterprises are characterized by a number of features to purify the emissions from gas and vapor contaminants, and to neutralize them (both technological and air emissions):

  • gases discharged into the atmosphere are quite different in chemical composition;
  • these gases have a relatively high temperature and contain a lot of dust impurities, which complicates the treatment greatly and makes the preliminary preparation or enrichment of exhaust gases necessary;
  • concentration parameters indicating gas and vaporous impurities are low and different each time. Most often it is typical for ventilation emissions and less often it is typical for technological ones.

It is better to locate gas treatment equipment on the suction side of fans and smoke exhausts, so they are less subjected to wear, it provides less wear to their blade impellers. Gas treatment systems and devices can be located indoors and outdoors, which is determined by weather conditions, gas temperature entering for purification and operating cycle of the equipment. Speaking about weather conditions, we should not forget about the protection of equipment components from the rainfall, ensuring not only the equipment but also gas communications with the appropriate thermal insulation. Typically, gas treatment facilities are located close to the workshop process equipment, which must be provided with means of automatic measurement of dust content in gas upstream gas treatment unit and downstream it. In the near future, as before, environmental safety of any industrial enterprise will be determined by putting into operation and further development of new gas treatment devices. It has been and will always be an integral part of any industrial, agricultural or municipal enterprise. A lot of money is committed in our country to implement these objectives, but economic development is increasingly contributes to the gradual transformation of gas treatment systems in respect to technological processes of materials recycling and waste management schemes. It is difficult to imagine that the iron and steel industry could throw out about 20 mln. tons of various residua after gas treatment of steel-melting furnaces to landfill every year. Or, for example, it is high time for machine-building to cross over to a local purification system of electroplating industry discharges and to nonferrous metals recovery.


Upon becoming the official distributer of fabric filters, our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), carries out the following: finds the buyers of your products on the market, conducts technical and commercial negotiations with the customers regarding the supplies of your equipment, concludes contracts. Should a bidding take place, we will collect and prepare all the documents required for the participation, conclude all the necessary contracts for the supply of your equipment, as well as register the goods (fabric filters) and conduct customs clearance procedures. We will also register a certificate of transaction (Passport of Deal) required for all foreign trade contracts in the foreign currency control department of the authorized Russian bank so that currency transaction could be effected. If required, our company will implement an equipment spacing project in order to integrate your equipment into the existing or newly built production plant.

We are convinced that our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will become your reliable, qualified and efficient partner & distributor in Russia.

We are always open for cooperation, so let’s move forward together!