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Chemical Solutions

Venturi scrubber

A view at the inlet (neck) of the Venturi scrubber

A view at the inlet (neck) of the Venturi scrubber

Venturi scrubbing system and a demister / drip collector (material FRP fiberglass)

Venturi scrubbing system and a demister / drip collector (material FRP fiberglass)

Venturi scrubber made of stainless steel (capacity of 15 000 m<sup>3</sup>/h)

Venturi scrubber made of stainless steel (capacity of 15 000 m3/h)

Venturi scrubber with a service platforms structures made of steel

Venturi scrubber with a service platforms structures made of steel

The upper part of the Venturi scrubber (FRP material)

The upper part of the Venturi scrubber (FRP material)

Venturi scrubber top part (material Hardox)

Venturi scrubber top part (material Hardox)

Venturi scrubber of the metallurgical plants (production capacity 80 000 m<sup>3</sup>/h)

Venturi scrubber of the metallurgical plants (production capacity 80 000 m3/h)

The throat of the Venturi scrubber for food industry

The throat of the Venturi scrubber for food industry

Venturi scrubber (filler and regulating device)

Venturi scrubber (filler and regulating device)

Venturi scrubber (capacity 5 000 m<sup>3</sup>/h)

Venturi scrubber (capacity 5 000 m3/h)

Pilot (experimental-industrial) testing facility

Pilot (experimental-industrial) testing facility

Venturi scrubber effectively combines the capabilities of cooling and cleaning of high dusty emissions. The Venturi scrubber with centrifugal droplet separator cleans the gas from micron and submicron particles with efficiency up to 99.9 %. The unique design of the offered Venturi scrubber is the ability to adjust the speed of the gas-liquid flow, and thus flow resistance in the throat of the Venturi scrubber, by varying the cross section through a drive with a gear lift. Thus achieved the desired efficiency of cleaning by creating the necessary size of the drops that are guaranteed to absorb contaminants and are separated from the gas stream. Due to the design of the scrubber and rational distribution of gas-liquid flows creates a turbulent regime and a highly developed contact surface, which allows effectively to absorb gaseous contaminants.

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Advantages:

  1. Stable operation with fluctuations of the gas flow

  2. Steady work with sticky, sticky dust

  3. Gas flows with a temperature of over 1000 °C cooling

  4. Low operating costs

Scope of application:

  • coal dust and other dust species

  • dust food enterprises (tobacco manufacturing, sugar, etc.)

  • dust, smoke after incineration furnaces, etc.

  • metal oxides, heavy metals

  • salts (nitrates, sulfates, carbonates, chlorides) of the enterprises of mineral fertilizers, etc.

  • dust from the enterprises for manufacture of building materials

  • organic dust from pharmaceutical companies

  • acid mists at the chemical and petrochemical enterprises

Scheme for dedusting hot gases


Design features and principle of operation proposed by us Venturi scrubber:

Gas and liquid streams feeding method

Tangential feed of the scrubbing liquid part and the geometry of the inner surfaces of the scrubber eliminates incrustation and abrasion of the walls of the apparatus. Organization in a certain way the interaction of counter-current gas-liquid flow in the throat of the scrubber provides the required surface mass transfer and hydrodynamic specified mode.

Process set efficiency maintaining / the predetermined process efficiency (> 99 %)

The required hydraulic resistance corresponding to the desired efficiency of the process is maintained with the regulating device – a cone with a drive mechanism, changing if necessary the cross section of the neck. This regulation ensures the efficient operation of the scrubber and variable costs of gas

Guaranteeing separation of drops

At the exit of the neck there is controlled coagulation of fine droplets of the medium which absorbed pollutants from the gas phase occurs. The calculation is determined by the size of the drops due to the hydrodynamic mode, which allows you to select the desired geometry of the centrifugal droplet separator for complete separation of drops

Waste water minimization

The ability of the scrubber with a high concentration of dust in the scrubbing liquid allows you to organize the circulation contours, providing a reduction of sewage and receiving more concentrated scrubbing liquid as needed

Cooling in a venturi scrubber

The Venturi scrubber is also effective in the process of cooling the flue gases by contact. Due to the design of the scrubber and distribution of gas-liquid flows, the hot gas is in contact with the film and drops of water, without affecting the walls of the apparatus. Gas streams with temperatures up to 1500 °C can be cooled to the temperature of the "wet thermometer", if necessary, further cooling is possible to arrange additional heat and mass transfer stages

Implemented projects

Scrubbers material: stainless steel and Hardox

Scrubbers material: stainless steel and Hardox

Systems for wet cleaning of gases after the converters and blast furnaces.

Equipment's modernization of the old factory - gas cleaning after the blast furnaces.

System parameters: gas capacity- up to 60 000 nm3/h, temperature of gas phase - up to 350 °C, dust content of the gas phase up to 120 g/nm3.

Results: reduce dust levels to < 20 mg/nm3, ensuring a constant efficiency and the hydraulic resistance at high fluctuations of gas.

Scrubbers designed and tested for pressures greater than 2.5 ATM (overpessure)

Scrubbers designed and tested for pressures greater than 2.5 ATM (overpessure)

Systems for wet cleaning of gases after the converters and blast furnaces.

Equipment's modernization of the old factory - gas cleaning after the blast furnaces.

System parameters: gas capacity- up to 60 000 nm3/h, temperature of gas phase - up to 350 °C, dust content of the gas phase up to 120 g/nm3.

Results: reduce dust levels to < 20 mg/nm3, ensuring a constant efficiency and the hydraulic resistance at high fluctuations of gas.

Coarse dust removal in the cyclone group with the special lining

Coarse dust removal in the cyclone group with the special lining

Systems for wet cleaning of gases after the converters and blast furnaces.

Equipment's modernization of the old factory - gas cleaning after the blast furnaces.

System parameters: gas capacity- up to 60 000 nm3/h, temperature of gas phase - up to 350 °C, dust content of the gas phase up to 120 g/nm3.

Results: reduce dust levels to < 20 mg/nm3, ensuring a constant efficiency and the hydraulic resistance at high fluctuations of gas.

Final cleaning and cooling of gases in a Venturi scrubber with adjustable throat

Final cleaning and cooling of gases in a Venturi scrubber with adjustable throat

Systems for wet cleaning of gases after the converters and blast furnaces.

Equipment's modernization of the old factory - gas cleaning after the blast furnaces.

System parameters: gas capacity- up to 60 000 nm3/h, temperature of gas phase - up to 350 °C, dust content of the gas phase up to 120 g/nm3.

Results: reduce dust levels to < 20 mg/nm3, ensuring a constant efficiency and the hydraulic resistance at high fluctuations of gas.

Providing a residual dust content of less than 10 mg/m3 including recovery of petroleum products

Providing a residual dust content of less than 10 mg/m3 including recovery of petroleum products

The process simulation of gases purification from dust particles and oil products after lime furnaces.

Simulation using experimental data allowed us to solve the simultaneous trapping of dust particles and oil products, condensed in the form of drops.

There was selected a hydrodynamic regime that allows implement the gas phase aftercooling to 35C.

Providing a residual dust content of less than 10 mg/m<sup>3</sup>

Providing a residual dust content of less than 10 mg/m<sup>3</sup>

Venturi scrubber in the production of mineral fertilizers.

For processing departments aspiration has been used a Venturi scrubber with adjustable throat and the centrifugal droplet separator.

System parameters: capacity from 7 000 to 145 000 nm3/h, temperature from 60 to 190 °C, the concentration of dust particles of fertilizer to 17 g/ nm3.

Maintaining a constant cleaning efficiency regardless of the gas flow.

Maintaining a constant cleaning efficiency regardless of the gas flow.

Venturi scrubber in the production of mineral fertilizers.

For processing departments aspiration has been used a Venturi scrubber with adjustable throat and the centrifugal droplet separator.

System parameters: capacity from 7 000 to 145 000 nm3/h, temperature from 60 to 190 °C, the concentration of dust particles of fertilizer to 17 g/ nm3.

1st and 2nd stage of concentration in the Venturi scrubber with adjustable throat (neck) and a centrifugal scrubber as mass transfer and separation stage at the same time.

1st and 2nd stage of concentration in the Venturi scrubber with adjustable throat (neck) and a centrifugal scrubber as mass transfer and separation stage at the same time.

Project on utilization of hot gases containing chlorine in the production of silicone products

The performance by the cleaned gas is 10 000 m3/h, the temperature of the gases at the inlet 150 °C, the pollutant: dust up to 1 g/m3, vapour of HCl up to 150 g/m3, gaseous Cl2 up to 10 g/m3. Results: getting a 28-33 % of HCl as product disposal emissions, residual Cl2 in emissions less than 5 mg/m3 residual content of HCl in emissions is below 10 mg/m3

Increase profits by

29%

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