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Sulfuric acid/Materials concentration system

Date:2018-01-31 14:50:03 Fonts:
Application background:
The Sulfuric acid is usually applied as a raw material in metallurgy, titanium dioxide and other fields to attain a lower concentrated sulfuric acid, further more to acquire a desired consistence of sulfuric acid through the evaporation and concentration system.
 
Technical description:

Different evaporation modes are applied according to different material concentration and its impurities. The regular evaporation modes are classified into single-effect evaporation and multiple-effect evaporation, while the multiple-effect evaporation further more divided into cocurrent flow and counter flow. They’re classified into falling film evaporation, rising film evaporator or forced circulation evaporation by category, equipped with blow-off processing further more to improve the sulfuric acid concentration or remove the fluorine and chlorine from the sulfuric acid.

The diluted sulfuric acid concentration could reach 60%-95% through graphite evaporation system, which can be further more improved by tantalum evaporator.

The forced circulation is suitable for evaporation and concentration of the mediums which are easy in fouling and crystallizing, with high concentration, high viscosity and mediums containing granules. The medium flowing speed is accelerated under forced circulation to avoid fouling on the internal wall leading to a bad heat transfer effect.

Block hole type graphite evaporator or tubular graphite evaporator could be selected according to the mediums characteristics.

Graphite axial waterjet pump or PTFE waterjet pump could be applied according to the mediums characteristics of the forced circulation pump.

Triple-effect cocurrent forced circulation evaporation process:

Triple-effect counter flow forced circulation evaporation process:

Triple-effect cocurrent falling film evaporation circulation system:

Triple-effect counter flow falling film evaporation circulation system:

Sulfuric acid concentration system in Jinchuan, Gansu Province.

HCL acid contained concentration and separation system in China PINGMEI COAL GROUP