Together
to success
since 1997
"INTECH GmbH"
We are interested in cooperation with the manufacturers of continuous filters, 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 continuous 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 continuous filters, will submit a market overview for continuous filters 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 continuous 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 continuous filters 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 continuous 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 continuous 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 continuous filters. They will also provide necessary training and guidance for the customer’s personnel.
Depending on the nature of the working process the filters are divided into discontinuous and continuous.
In a continuous filters supply of suspension, residue discharge and filtrate discharge (or discharge of the thickened suspension) is produced continuously. And these stages are separated in time in a discontinuous filters (they are interrupted).
Continuous filters are used in various chemical productions, for example, during production of soda ash in the process of sodium bicarbonate separation from the solution. They can operate both under vacuum and under overpressure.
Continuous vacuum filters represent rotating discs or drums, in which vacuum is created by a vacuum pump. At that surface of discs or drums is coated with filter membrane. During rotation of the drum portion of surface is in suspension and the filtrate comes into the drum through the filter membrane, at which a residue is retained.
During the rotation of the filter housing the residue is washed and removed from the surface of the filter membrane. Consequently, during one rotation, there occurs a continuous automatic interchange of all filter processes, such as filtration, washing and drying, and thereafter discharging.
Continuous pressure filters are suitable for well filterable, usually crystalline residues. Poorly filterable residues, amorphous for example, are often separated by filter presses, discontinuous filters, and Nutsche filters.
Due to development of continuous pressure filters, it is possible to filter viscous and easily evaporating liquids in a continuous mode. Thus filtration of suspensions can be conducted with higher performance than by using vacuum filters operating at a pressure differential of up to 1 atm.
Design of continuous pressure drum filter is shown in the figure below, and it is similar to the vacuum filter.
Unlike the vacuum filters drum in this filter is installed in the airtight housing. Feed of suspension occurs under the action of a pump or compressed air through the bottom nozzle at a pressure ranging from 2 to 5 atm. The suspension fills the filter to the level of the overflow pipe through which the discharge of excess suspension is produced back into the collector.
Compressed air enters through the top nozzle. Compressed air pressure corresponds to the pressure of suspension, pumped into the filter tank. Due to this overflow of excess suspension, and filtration of it occurs smoothly.
Residue is retained on the surface of the drum. The filtrate, penetrating inside the drum, is discharged through the trunnion and through the distribution head. The resulting from filtration residue is thrown from fabric, moving down the drum when the roller is bypassed by fabric. To facilitate removal of residue roller has a perforated surface through which fabric is blown by compressed air. Once the fabric is released from the residue, it passes through the drive roller, and then re-coveres filter drum again.
Residue, removed from drum, falls into a hermetically closed screw conveyor. Discharge regulator is attached to the screw conveyor. Trunnion and shaft of the drum are arranged on the bearings that operate under pressure.
When filtration occurs at a pressure of 3-5 atm, it is possible to achieve a very high productivity, and the material will have a low residual humidity. Filtration takes place in a sealed device in which the pressure is not reduced. The complexity of the filter residue removal is the main disadvantage.
Disc and band filters are widely used, operating continuously and working under pressure. The principle of their operation is similar to disc and band filters, operating in a vacuum, but they have a sealed housing. Pressure in them is created by means of an inert gas or compressed air.
Continuous pressure band filters are used for filtration of suspensions, containing solid particles. The suspensions are recommended to be charged into them to a filter membrane.
Pressure band filters should be marked among these filters. Such a filter represents a closed rectangular housing, inside which an endless filter belt is located, covering the two drums, one of which is the master.
The belt moves on thrust rollers. Bearings of these rollers are located inside the housing. The belt moves at the beginning in the top part of the housing, and then returns to its initial position on the drive rollers. When the belt moves to the initial position, it is cleaned of remained residue by means of brushes and spraying device.
The principle of operation of such a filter is as follows. The suspension is fed to the belt through the nozzle. The belt moves within the housing, where the pressure is created by means of compressed air. The air which is supplied though the pipeline is introduced into the filter in multiple places of housing. Filtration in such devices is produced at the slow motion of the belt. The residue, formed by filtration, remains on the belt. The filtrate is collected in a special chamber, and then it is discharged from it through a nozzle. After filtration process residue remains on the belt and can be washed with water supplied through the jets. After drying the residue is discharged from the belt to the collection tank during the belt movement over the drum and then it is discharged by a screw conveyor.
Vacuum disc filters are designed for separation of suspensions, containing homogeneous and slowly settled particles. The operating principle of disc filters is the same as that of the drum ones. The difference is that in disc filters discs are installed on the shaft instead of a drum.
The disc filters are divided into sectors with a corrugated surface and are covered with a filter fabric from both sides. The sectors, channels of which have access to a common manifold in the hollow shaft, are located on one generator of shaft.
The residue is removed from the filter material by means of knives or rollers located on each disk from two sides. To facilitate the removal of residue, discs are produced with a slightly convex surface.
During rotation of the shaft the sectors of discs are sequentially connected to vacuum lines and to compressed air supply. Each disk is immersed into a separate section of the trough. To prevent settling of solid particles in the suspension an agitator is located in the trough.
One vacuum filter can contain up to 14 discs. The diameter of the discs is of 0.9-2.5 m. The area of the working surface is up to 100 m². The discs rotate at about the same speed as the drum in the drum filter.
The compactness is the distinctive property of disc filters. A disadvantage of such filters is that washing liquid enters the suspension during residue washing.
Discontinuous-flow settling tanks for operation with suspensions represent reservoirs of pools type. The suspension is supplied to the settling tank, and then after a while the clarified liquid is discharged through outlets, located above the residue level. The residue is discharged manually or by means of a discharge valve.
Continuous-flow settling tanks, equipped with rake agitator, are designed in the form of a tank with the bottom of the cone shape. The function of the agitator is to transfer the residue closer to the discharge outlet. The agitator rotates slowly, so as not to disturb the process of material settling. The clarified liquid is discharged through a special nozzle. The residue is discharged through the nozzle in a cone bottom. Such devices allow to dehydrate the residue to a concentration of 35-55% of solid phase.
Continuous-flow settling tanks, equipped with cone baffles, are characterized by simplicity of design. The substance is supplied into the tank and is distributed in the space between cone baffles. Solid particles are precipitated on the surface of these baffles. The residue slides into the bottom of the device, from which it is discharged.
Continuous-flow settling tanks for separation of emulsions represent horizontal tanks, equipped with a perforated partition. The function of the partition is to protect liquid from the pressure jet coming into the device. The cross section of the settling tank should provide fluid flow rate in the housing of no more than several mm/sec, and the laminar flow regime. Light and heavy phases are discharged from the opposite sides of the settling tank.
The calculations are valid for thickeners, and are based on the settling velocity factor of the smallest particles of the suspension, subject to be separated. Calculations, valid for classifiers, are based on the velocity factor of the particles, subject to be separated at a certain stage.
Let us assume that the flow through time in a settling tank t, equals to the time of settling of particles, located at a maximum distance from the bottom, tos. Part of the settling tank is not involved, if the condition t> tos is met for particles in it.
In the simplest settling tank time can be represented as:
t = l/Wf
where l is a length of the settling tank; Wf is a flow velocity.
The flow rate is calculated by the formula:
Wf = Qpl/(b•h)
where Qpl is a volumetric flow rate of the purified liquid;
b is a width of the settling tank;
h is a height of the layer of clarified liquid.
Suspension is supplied continuously in the continuous-flow settling tanks. The same applies to the discharge of clarified liquid and residue.
In the devices of the combined type suspension flows continuously at a low speed through a settling tank. The velocity should be sufficiently small so that the particles could have time to settle at the bottom of the settling tanks before the liquid leaves the devices. Eventually, the residue is formed at the bottom of the device, which must be periodically discharged after decantation of liquid.
Settling tanks of different sizes and shapes are used depending on settling velocity, frequency of certain processes and concentration of suspensions.
Settling velocity also depends on the temperature, because when the temperature changes, the extent of the suspension viscosity changes too. At that the settling velocity increases with increasing temperature, since the viscosity is lowered.
Heating elements are used to accelerate the settling process by heating the suspension. When designing these elements it is important to avoid any vertical currents of fluid rising hot water, preventing the filtration. Therefore, the elements should be placed vertically over the entire height of the settling tank, to achieve uniform temperature and uniform density of the liquid.
Filters
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!
