Organic waste gas treatment system and solvent recovery technology

A technology of organic waste gas and treatment system, which is applied in the direction of solid adsorbent liquid separation, dispersed particle filtration, and dispersed particle separation, etc. It can solve the problems of low solvent recovery rate, unsatisfactory organic waste gas treatment effect, high energy consumption, etc., and achieve reduction Energy consumption, avoiding drying treatment, and high purification efficiency

Inactive Publication Date: 2018-07-10
ZHEJIANG HUANYAO ENVIRONMENTAL CONSTR
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Problems solved by technology

[0004] Aiming at the disadvantages of relatively high energy consumption, low solvent recovery rate and unsatisfactory organic waste ga

Method used

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  • Organic waste gas treatment system and solvent recovery technology

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Embodiment 1

[0026] An organic waste gas treatment system, such as figure 1 As shown, it includes a pretreatment system, an exhaust gas adsorption system, a nitrogen desorption system and a solvent refining system, wherein the pretreatment system includes a surface cooler 2 and a filter 3 connected in sequence; the exhaust gas adsorption system includes an activated carbon particle adsorber 4, and the filter Device 3 communicates with activated carbon particle adsorber 4; nitrogen desorption system includes heat exchanger 5, heater 6, desorption fan 7, nitrogen buffer tank 8, condenser 9, gas-liquid separator 10 and solvent buffer tank 11, activated carbon The particle adsorber 4 is connected to the heat exchanger 5, the condenser 9, the gas-liquid separator 10 and the solvent buffer tank 11 successively, the condenser 9 is also connected to the solvent buffer tank 11, and the gas-liquid separator 10 is successively connected to the nitrogen buffer tank 8, the degasser The fan 7, the heate...

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Abstract

The invention relates to the technical field of organic waste gas treatment, and discloses an organic waste gas treatment system. The organic waste gas treatment system comprises a pretreatment system, a tail gas adsorption system, a nitrogen desorption system and a solvent refining system, wherein the pretreatment system comprises a surface air cooler (2) and a filter (3) which are sequentially communicated; the tail gas adsorption system comprises an activated carbon particle adsorber (4); the nitrogen desorption system comprises a heat exchanger (5), a heater (6), a desorption fan (7), a nitrogen buffer tank (8), a condenser (9), a gas-liquid separator (10) and a solvent buffer tank (11); and the solvent refining system comprises a mixed solvent pump (12), a high gravity rectification device (13), a molecular sieve dehydration tank (14) and a refined solvent storage tank (15) which are sequentially communicated. The invention also discloses an organic waste gas treatment and solventrecovery technology. The water content of an organic solvent obtained after using heated nitrogen as a desorbing agent, high-boiling point organic waste gas can be recovered, and nitrogen can be directly recycled to reduce the energy consumption.

Description

technical field [0001] The invention relates to the technical field of organic waste gas treatment, in particular to an organic waste gas treatment system and a solvent recovery process. Background technique [0002] At present, domestic mainstream treatment technologies for volatile organic waste gas mainly include condensation method, adsorption method, absorption method and combustion method, etc. Condensation method is usually used for solvents that can be recovered by condensation at room temperature; It is used to recover solvents with higher added value; while the combustion method cannot recover solvents. Therefore, in order to better recover the solvent while treating the medium / low concentration organic waste gas, the adsorption method is generally used to treat the organic waste gas. [0003] The traditional adsorption method is adsorption + steam desorption + rectification separation + solvent recovery method. This method is suitable for the treatment of organi...

Claims

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Application Information

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IPC IPC(8): B01D53/04B01D53/00B01D46/00B01D15/00B01D3/14
Inventor 蔡炳良张海杰李英周晓光沈滨宋旭
Owner ZHEJIANG HUANYAO ENVIRONMENTAL CONSTR
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