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Applications Solution

We concentrate on graphite equipment-based process engineering and chemical environmental protection process engineering that is advantageous to energy conservation and emission reduction with other equipment. We combine and customize our process solution by using our expertise in material, equipment and process.

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

Spin-bath regeneration in viscous fiber industry

  • By a chemical reaction sodium sulfate and water develop out of soda lye and sulfuric acid. In viscose fiber factory the so-called spinbath is used up and diluted during the spinning process.
    In former times this spinbath was used only one time and after that drained as waste water which caused heavy environmental load and high operation cost. This made it necessary to regenerate the spinbath and feed it back into the process or to produce from a part of it a saleable product.
    Proprietary 14～16-stage flash evaporation technology reduce steam and cooling water consumption
    Our References
    10 lines, 14-stage flash evaporation project
    Fujian, China
    Capacity: 25 t/h one line water evaporation
    1 line, 14 stage evaporation project
    Nanjing, china
    Capacity: 25 t/h water evaporation
    5 lines, 14 stage evaporation project
    Capacity: 25 t/h water evaporation

Salt recycling of wastewater from gas desulphurization

  • For instance, in power plants and incineration plants, the pollution of air containing sulfur dioxide constantly increases. As waste water of different components from desulfurization flue gas develop, which are not allowed to be fed into a biological purification plant.
    Evaporation and crystallization technology can be used to treat different kinds of waste water
    Salts are crystallized and produced partly as products of high pure quality which may be reutilized

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

Titanium solution concentration

  • Two-stage evaporation process replace the single stage evaporation in the industry
    Customize process solutions according to customer’s requirements
    The lowest steam and cooling water consumption
    Maximize the heat recovery in the system
    Long service life
    Our References
    10t/h water evaporation
    Sichuan, China
    10t/h water evaporation
    Sichuan, China

Concentration of acetic acid

  • In painting, pharmaceutical industry, the by-product of 15%-25% acetic acid solution are developed
    The main equipment of graphite distillation column and graphite reboiler with high quality material make process advanced, operation easily and operation cost low.

Purified phosphoric acid process

  • Wet process phosphoric acid product is designed taking into account the nature of the phosphate rock to be used
    Phosphoric acid from Merchant Grade to Food Grade and phosphate-based products can be provided
    The purified wet-process phosphoric acid contains three stages: pretreatment, solvent extraction and post-treatment
    Our References

Metal salts crystallization ( Co/Ni) from low concentration waste water in chemical and metallurgical industries

  • 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 gas liquid ratio achieved
    Maximize the heat recovery in the system
    Long service life
    Our References
    Multi-stage evaporation process/mechanical vapor recompression 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 gas liquid ratio achieved
    Maximize the heat recovery in the system
    Long service life
    Our References
    Mechanical vapor recompression 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
    Our References
    Mechanical vapor recompression or 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
    Our References
    Two-stage and three-section evaporation 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
    Recycle of FeSO4.H2O
    Long service life
    Our References
    Multi-stage flash evaporation technology 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
    Our References
    Multi-stage evaporation process can be used
    Customize process solutions according to customer’s technical requirements
    Customize process solutions according to customer’s technical requirements
    The lowest energy consumption achieved
    Maximize the heat recovery in the system
    Long service life
    Our References
    Mechanical vapor recompression + multi-stage evaporation 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
    Our References
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