Resin desorption+condensation recovery equipment

I. Principles of resin adsorption and desorption+condensation recovery

Resin adsorption and desorption+condensation recovery is to use granular or fibrous resin to adsorb molecules of organic components in the waste gas. When the adsorption reaches a certain saturation, stop adsorption, start to use saturated low-pressure water vapor to heat and adsorb saturated resin, activate and gasify the adsorbed organic components, and then desorb from the resin. The recovered resin can re-absorb gas molecules of organic waste gas. At the same time, the gas desorbed from the organic component is condensed, so that its liquefaction and water are automatically separated and recovered.

Click ViewCase: medical industry waste gas treatment resin adsorption condensation recovery

2、 Resin adsorption and desorption+condensation recovery process

Strong>Pretreatment adsorption:The exhaust gas is pressurized by the fan into the resin adsorption tank. The organic components are adsorbed when penetrating the resin layer. The adsorbed purified gas is discharged after meeting the standard.

Strong>Desorption regeneration:The resin is desorbed and regenerated with steam. The desorption steam enters from the top to heat the resin bed to desorb organics. The desorption resin has high humidity and temperature, so it is necessary to purge air into the absorber to cool and humidify the resin adsorption bed.

Strong>Condensation recovery:The mixed steam generated by desorption is recycled by the condenser to recover the liquid mixture. The mixture can be recycled by gravity stratification, distillation, rectification, etc.

3、 Components of resin adsorption and desorption+condensation recovery equipment

The resin adsorption and desorption+condensation recovery equipment of Parkway Technology includes gas adsorption module, liquid separation circulation module and steam supply unit. The gas adsorption module consists of a capture tower, a dry filter and a parallel resin adsorption tank. The parallel resin adsorption tank comprises a tank body, a spray head and a multilayer adsorption assembly. The multilayer adsorption assembly comprises a first grid, a first separation screen, a first resin layer, a second grid, a second resin layer, a second separation screen and a gravel layer stacked from bottom to top. The liquid separation circulation module includes condenser, gas-liquid separator, liquid-liquid separator and liquid storage tank.

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Span style="color: # 00B0F0;">Click View4、 Characteristics of resin adsorption and desorption+condensation recovery

High process level, long service life and purification efficiency up to 99%;

Stable performance, low energy consumption, small land occupation and easy maintenance;

Intermittent or continuous operation;

Organic liquid can be directly recycled without secondary pollution;

Easy desorption and regeneration, saving operation cost.

Resin adsorption is very suitable as the carrier for concentration and recovery. In chloride waste gas treatment, the absorption, desorption, condensation and recovery process can be used to treat organic waste gas well. Now, it is widely used in the pharmaceutical and chemical industry. The absorption and desorption of organic waste gas is different from the destruction method, which can recover a lot of volatile solvent. In the industrial production process, there is often a drying process, and a lot of organic solvent volatilizes and turns into organic waste gas. Through the absorption and condensation of organic waste gas, it can be recovered well, and recycling can obtain good economic benefits.

5、 Application scope of resin adsorption and desorption+condensation recovery

Low-concentration organic waste gas in chemical industry, petroleum industry, pharmaceutical industry, painting industry and printing industry. Organic solvent with single organic component and recycling value can be recycled. Recoverable organic matters include methanol, ethanol, glycol, isopropanol, glycol monomethyl ether, glycol monoethyl ether, propanone, butanone (methyl ethyl ketone), acetate (such as ethyl acetate and butyl acetate), light hydrocarbon, oil and gas recovery, etc.