Back to Mineral Acid Treatment

Acid concentration and more

DDPS has a unique combination of products and competences. Specialised and experienced chemical engineers work on all process-relevant questions from the customer enquiry, through internal planning and consultation up to commissioning of the plant on customer's site.
Contact us
Acid concentration and more
From a wide experience with corrosion resistant materials, DDPS is not only capable in designing and manufacturing a wide range of key process equipment, but provides also in-house process know-how. We offer:

.

Basic Engineering

  • Mass and energy balances
  • Trial Experiments in the QVF® pilot plant facility
  • Process flow diagram (PFD)
  • Preliminary layout of the plant
  • Apparatus and pump specification

Detail Engineering

  • P&ID
  • General arrangement drawing
  • Isometric drawing
  • Manufacturing drawings
  • Valve specification
  • E&I Specification

Procurement

  • Enquiry
  • Award
  • Project control
  • Acceptance

Construction

  • Construction management
  • Scheduling
  • Interface management
  • Troubleshooting
  • Acceptance coordination (PED)

Commissioning

  • Loop check
  • Test run with water
  • Commissioning
  • Performance test

Test facility

Individual process steps can be tested in the test facility if it is not possible to fall back on DDPS know-how for new products or processes. Therefor DDPS has a filter/drying test facility at Rosenmund site and one for chemical engineering at QVF® in Mainz.

The customer test facility is used to develop company-own components and processes as well as for testing and optimising customer-specific tasks. Also the production of small amounts of samples is possible.

Main focus acid concentration

Mineral acids are very important in chemical procedures. Not only as a reaction participant and catalyst, but also as an aid, as in the case of sulfuric acid for drying gasses or during extractive distillation, but also as a cleaning agent as used in the electronic industry.

Through our experience with corrosion-resistant materials, we have process know-how in mineral acid handling and offer you in part our own processes, such as for example the energy-saving concentration of nitric acids (USA 10/296,297).

By the combination of borosilicate glass and glass-lined steel you get most of the key process equipment from one source. We offer our know-how in:

Product recovery and product purification

  • Solvent recovery by evaporation, distillation and rectification like MDC, NMP, DMF, alcohols, Cleaning Solvent, etc.
  • Rectification of binary and multi-component mixtures (e.g. epichlorhydrin)
  • Production of absolute alcohol by extractive or azeotropic distillation
  • Recovery of organics by solvent extraction: phenol, pyridine, DMF, NMP
  • Recovery of metal salts and acids by solvent extraction: acetic acid, thioglycolic acid; Ferric chloride, ammonium molybdate
  • Dehydration of organics (amines, THF) by caustic packed bed adsorption
  • Purification of natural extracts (e.g. essential oils)

Waste water treatment

  • Stripping of partly miscible components (toluene, chloroform, MDC etc.)
  • Stripping of ammonia
  • Extraction of high boiling impurities without recovery
  • Multiple-effect evaporation of waste water with or without solvent recovery (e.g. NMP, DMF, phenol

Exhaust gas purification

  • Drying of SO2 or Cl2 using sulphuric acid
  • Absorption of HCl, HBr, SO3, and Cl2, Br2, SO2
  • Combined absorption of HCl and SO2
  • NOx-Absorption
  • Absorption of ethylene oxide or ammonia
  • Absorption and recovery of volatile organic components VOC
  • Solvent Condensation Unit

Recovery, Concentration and Purification of Mineral Acids

  • Sulphuric Acid Dilution
  • Sulphuric Acid Concentration
  • Nitric Acid Concentration
  • Denitration and recovery of mixed acids from nitration plants
  • Hydrochloric acid recovery
  • Concentration of HCl by extractive distillation or two pressure process
  • Purification of spent acids from etching processes
  • High purified (electronic grade) acids: HCl, HNO3, H2SO4

Reaction with halogens / HCl

  • Bromine recovery from sea water
  • Debromination/ bromine recovery from salt solutions
  • Iodine Recovery
  • NaOCl Production
  • H2S – Gas Production
Questions? We are here to help.
If you'd like to talk with a sales representative about purchasing De Dietrich Process Systems's products and services, you can reach us here.
Contact us
Documents 
Contact us
Close
Document download
Thank you to provide us some information before starting the download.
* Required fields