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Activated carbon adsorption-nitrogen desorption condensation solvent recovery technology
Activated carbon cyclic adsorption and desorption: efficient purification of industrial VOCs and solvent recovery.
Type
Waste gas treatment equipment
Tags
Air pollution prevention and control project
Atmospheric environment
Activated carbon
Solvent recovery
Solution maturity
Early adoption / Process verification
Cooperation methods
Other
Applicable industry
Water conservancy, environment and public facilities management
Applications
Waste gas treatment
Key innovations
This technological innovation lies in the use of flame retardant nitrogen for high-temperature desorption and regeneration to improve safety. Organic solvents are recycled through condensation separation to achieve resource utilization, offset operating costs, and balance environmental protection and economic benefits.
Potential economic benefits
The benefits of this technology in recovering organic solvents can basically offset operating costs and achieve cost savings; the high purification rate avoids environmental penalties and improves corporate efficiency.
Potential climate benefits
This technology efficiently purifies volatile organic compounds (VOCs) and reduces their emissions as precursors of indirect greenhouse gases such as ozone. At the same time, the system recovers organic solvents, avoiding the energy consumption and accompanying carbon emissions required for the production of new solvents, and achieving significant indirect carbon reduction benefits.
Solution supplier
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Jiayuan Environmental Protection Co., Ltd.
Jiayuan Environmental Protection Co., Ltd.
Jiayuan Environmental Protection Co., Ltd. provides professional environmental protection technologies and solutions to assist industrial and urban pollution control and resource utilization.
China
Solution details

Brief description of technology

Activated carbon is used to adsorb organic waste gas, and after saturated adsorption, high-temperature nitrogen is used for desorption and regeneration. The solvent produced by desorption is condensed and separated and then recycled. After pretreatment, organic waste gas enters an activated carbon adsorption tank for adsorption under the action of an adsorption fan. After saturation, the flame retardant gas nitrogen is used as a heat carrier for desorption. The desorbed high-concentration waste gas enters the condensation equipment to obtain part of the organic coolant. The coolant and condensed recovery liquid are separated by an oil-water separator and then enter the solvent storage tank.

technical information

VOCs purification rate ≥95%, treatment air volume: 1000- 150,000 m3/h; exhaust gas concentration: 100- 15,000 mg/m3

Commercial applications

1. Sanying Packaging (Jiangsu) Co., Ltd., waste gas treatment scale: 280000m3/h; 2. Shanghai Haosheng Chemical Technology Co., Ltd., waste gas treatment scale: 5000m3/h.

investment recovery period

Due to the low concentration of organic waste gas in this project, the recycling benefits brought by the recovered organic solvents can basically supplement the operating costs of the treatment system.


Last updated
08:52:18, Nov 05, 2025
Information contributed by
Green Technology Bank

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