HCl Syntheses

• Customize plant capacity according to customer’s technical requirements
  Production of hydrochloric acid with 1 ppm free chlorine
  Production of HCl gas with lowest H2O content according to customer requirements
  Reliable operation
  Highest payback thanks to heat recovery system (e.g. steam recovery)
  Our References
  

  30t/d 100% HCl (g) +320t/d Hydrochloric acid
  Fujian, China

  

  100t/d 100% HCl (g)
  Neimenggu, China

  

  125t/d HCl (g)
  Yunnan,China

Concentration of H2SO4

• Can design high concentration from 70 % to 96%
  And low concentration from 25 % to 68 %
  Natural or forced circulation
  Two or three-stage concentration system at different pressure levels significantly reduce steam consumption
  Our References
  

  Waste sulfuric acid regeneration in TiO2 industry
  Sichuan, China
  5 t/h treated volume, H2SO4: 24%-69%

  

  Waste sulfuric acid concentration in TiO2 industry
  Anhui, China
  15t/h water evaporation, H2SO4: 20%～25% - 55%

Production of HCl gas from hydrochloric acid

• Customize plant capacity according to customer’s technical requirements
  Conventional process/advanced process
  Feed concentrations in the range of 25% to 35% HCl
  Optimal design with least steam and cooling water consumption
  Our References
  

  Conventional desorption 1t/h 31% hydrochloric acid
  Hebei, China

Purification of HCl

• Customize plant capacity according to customer’s technical requirements
  HCl gas is produced by distillation of hydrochloric acid solutione
  Stripping columns with intensive fluid contact
  Production of highly pure, dry HCl gas with low inert gas and moisture contents
  Gas pressure and temperature in accordance with customer’s requirements
  Minimized consumption of steam and cooling water by optimal design
  No risk of explosion

   

  Applications
  sulfur method to produce refined chloroacetic acid with byproduct hydrochloric acid

Evaporation and crystallization

• If the solubility of the salt changes only a little at fluctuating temperatures the evaporation crystallization preferably find applications
  In this process a solution is crystallized by evaporating the solvent through the supply of heat.
  The special design of the evaporation chamber makes is possible to operate the evaporation crystallizer as classifying crystallizer.
  In this case the crystals are separated by classification according to size in a sedimentation zone. The coarse portion may be discharged through an extra outlet while the fine portion remains in suspension.
  Our References
  

  Evaporation and crystallization MgSO4 pilot-plant
  0.3t/h water evaporation

Mechanical vapor recompression

• If the cost of electric power are lower than the cost for the production of steam, it is advisable to operate the vapor compression by means of electric power
  Live steam is only needed for starting-up of the plant
  Besides single-stage radial compressors also multi-stage machines and axial compressors may find application
  Electricity consumption of below 40Kwh per ton water evaporation
  Low operation cost and high condensate quality
  Mechanical vapor recompression may also be applied in multi-stage evaporation plants and evaporation crystallization plants.

   

  Applications
  -evaporation of brine solutions in chlor-alkaline industry
  -concentration of brine solutions in salt industry
  -evaporation of aqueous solutions in chemical industry
  -recycling of special metals
  -concentration of waste water in environmental aspect
  -evaporation of milk, whey, sugar solutions etc. in food and beverages industry
  -concentration of solutions in petrochemical industry
  Our References
  

  Process flow diagram of MVR

  

  Titanium solution concentration with MVR to significantly reduce operating cost
  Capacity: 6.6t/h water evaporation

Brine osmosis in chlor-alkali industry

• Significantly extend the regeneration period of resin tower in brine treatment system
  Decrease customer’s operation cost
  Reduce the waste water effluent from the system
  Cut down labor intensity
  Our References
  

  Shanghai chlor-alkali, China
  Shanghai, China

  

  Shanghai chlor-alkali, China
  Shanghai, China

Crystallization and recycling of NaCl/KCl in aluminum salt industry

• Multi-stage evaporation process can be used
  Customize process solutions according to customer’s technical requirements
  Lab test can be conducted before scaling up to the industrial phase
  The lowest energy consumption achieved
  Maximize the heat recovery in the system
  Long service life