Chemical processes

Industries | Industrial | Chemical process

 

Equipment that keeps the product purity and that can handle toxic, corrosive and unstable gases

The chemical sector is such a diverse industry that the range of applications for our products is very wide. Our experience across a wide variety of gas mixtures, including extremely corrosive compositions, enables us to select the construction materials that will provide the most durable and safe long-term service for each individual application.

Fans can be supplied to be gas tight and made of special materials to resist corrosion. Diaphragm compressors maintain the highest cleanliness of gas being compressed, preventing gas contamination by means of complete separation from mechanical lubrication and the external atmosphere.  Diaphragm compressors are frequently used in chemical processes (Fluor, Polysilicone) and have a high pressure capability for reactor feeding while piston compressors are custom designed with regards to materials and instrumentation for handling complex chemical gases.

Blowers and turbo-compressors are supplied to provide air for carbon black plants and for sulphuric acid plants. 
Howden screw compressors are used for gas handling and in refrigeration plants while Howden ExVel® turbo fans are used in MVC evaporators to concentrate chemical solutions for transport and further processing in crystallizers or dryers.

 

Comprehensive, Customized Services

We supply a range of equipment to the chemical industry, from fans for process heating and cooling, to compressors that are used for gas compression and processing.

Bespoke Packages

The important differences in gas composition to process constraints make our ability to custom-design for specific needs and site conditions enormously valuable. Each complete package is designed to match the rigors of its environment as well as its specific task, and engineered for continuous uninterrupted operation.

In-House Expertise

Howden engineering teams and field engineers have access to our 160 years of knowledge, meaning we can offer our expertise at every step of the process from product selection to ongoing support. Our worldwide organisation provides local responsive support to end users and customers.

  • Chlorine gas/Compress

     

    Compress chlorine prior to liquefaction or transfer to consumer plant and potentially hydrogen (within sodium chloride method).

     

  • Chlorine gas/Offloading transfer

     

    Equipment ensure liquid product transfer to grounded, rail or truck mounted tanks. Gas under pressure is used to push liquids.

     

    • Reciprocating Compressor

  • Toxic or corrosive process gases

     

    Diaphragm compressor technology is particularly adapted for clean, hermetically sealed gas compression preventing any contamination from the product to the atmosphere.

     

    • Diaphragm Compressor

  • Fluorine and Fluorocarbon Processes

     

    Diaphragm compressors technology is particularly adapted for clean, hermetically sealed gas compression, preventing any contamination of the product or the atmosphere. PTFE and Teflon processes, UF6 Compressor, BF3 production, HFC compressor, Hydrofluoric acid, Metal fluoride and NF3 processes.

     

    • Diaphragm Compressor

  • Soda

     

    Soda gas compressor.

     

    • Horizontally Split Compressor

  • Polysillicon/FBR

     

    Polysilicon is manufactured in a multi-step process in which gases are compressed, passed over silicon, and further processed. Howden deliver FBR compressors, STF compressors and H2 compressors for this application.

     

    • Reciprocating Compressor

  • Polysillicon/TCS VCD

     

    Polysilicon is manufactured in a multi-step process in which gases are compressed, passed over silicon, and further processed. Howden deliver reactor off gas compressors, HCL for TCS synthesis, TCS for deposition reactor and H2 recycle compressors for this application.

     

    • Diaphragm Compressor, Reciprocating Compressor

  • Process support/ Contaminated gas disposal

     

    Incinerators and thermal oxidisers fans.

     

    • Centrifugal Fans

  • Gas transfer

     

    Transfer of gases containing particles or moisture.

     

    • Centrifugal Fans, Turbo Fans, Peripheral Compressor

  • Site utilities/N2 service

     

    Delivery of pressurised nitrogen for site process needs. 确保干燥压缩气体纯度保存. Compressor package construction match area protection level specified by the site.

     

    • Reciprocating Compressor, Vertical Reciprocating

  • Site utilities/Air

     

    Air for process

     

    • Centrifugal Fan

  • Supercritical CO2

     

    Supercritical CO2

     

    • Centrifugal compressor

  • Site utilities/Regeneration air

     

    Regeneration air

     

    • Single stage blowers

  • Site utilities/WWTP Waste water treatment Air Blowers

     

    Treating contaminants such as petroleum hydrocarbons, ammonia, and organic sulfur. For mechanical system or diffused aeration system, air supply is needed into the diffuser. Howden supplies air blowers for the application.

     

    • Single stage blowers

  • Site utilities - Energy Recovery

     

    Instead of letting down high-pressure steam exhaust across a throttling valve, low-pressure waste steam can be mechanically compressed or boosted to a higher pressure so that it can be reused.

     

    • RootsTM Rotary Lobe Blowers, ExVelTM Turbo fans

  • MVR / MVC / ZLD (Zero Liquid Discharge)

     

    Vapor recompression involves incorporating a blower to increase the temperature of the latent heat in steam to render it usable for process duties.

     

    • RootsTM Rotary Lobe Blowers, ExVelTM Turbo fans, Turbo Compressors

  • Site utilities/Aeration / Ventilation

     

    At emergency evacuation points, axial and centrifugal fans provide reliable ventilation in crisis situations. Living quarters overpressure to protect rooms and staircases from hazardous fumes.

     

    • Centrifugal fans, Axial fans

  • Site utilities/Process cooling

     

    Cooling fans for Air Cooled Heat Exchanger (ACHE).

     

    • Cooling Fans

  • Process support/Air for Pneumatic Conveying

     

    Air stream is introduced by a positive pressure blower upstream of material intake points.

     

    • Roots Lobe Blowers

  • Atomising air

     

    Turbo compressors providing atomising air for the fluidised bed.

     

    • Single stage blowers

  • Process support/Flare gas recovery

     

    Recover off gas streams that are to be flared.  Compression solutions are delivered with compatible materials and protection level according area classification.

     

    • Reciprocating Compressor, Screw Compressor

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