Process for treating odor generated in organic industry by direct absorption method

By adopting a combination of negative pressure cooling dehumidification and composite absorbents in odor treatment in the organic industry, the problems of high equipment cost and low efficiency in odor treatment under high humidity environments are solved, and low-cost and high-efficiency odor treatment effects are achieved.

CN120644018APending Publication Date: 2025-09-16YUNNAN JIEDI CONSTR ENG CO LTD
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Patent Information

Application Number
CN202510986416.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-17
Publication Date
2025-09-16

AI Technical Summary

Technical Problem

When dealing with odors from the organic industry, especially those containing sulfur, existing technologies have problems such as high moisture-proof requirements for equipment, high costs, low adsorption efficiency, and complex hazardous waste treatment, making it difficult to meet the needs of odor control in high humidity environments.

Method used

After being sent into the cooling and dehumidification equipment under negative pressure, it is absorbed by a composite absorbent (betaine, sodium lauryl sulfate, zinc acetate and ethanol or isopropyl alcohol). Through the chelation and circulation of the absorbent, organic matter such as dimethyl sulfide, methyl alcohol, carbon disulfide, olefins and lipids are captured and absorbed. Combined with a multi-stage baffle structure and a PP material filler layer, gas-liquid contact and removal are achieved.

Benefits of technology

It achieves low-cost and efficient odor treatment, reduces equipment investment and operating costs, simplifies the sewage treatment process, improves the VOCs removal rate, reduces environmental pollution, and eliminates the need for frequent replacement of adsorption materials.

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Abstract

The invention relates to the technical field of air pollution control, and discloses a process for treating odor generated in organic industry by a direct absorption method, which comprises the following steps: S1, feeding odor into cooling and dehumidifying equipment through negative pressure, condensing most of steam in waste gas into water, and recycling condensed water; s2, a fan is arranged on a gas pipeline between cooling and dehumidifying equipment and an absorption tower, the subsequent higher pressure difference can be overcome, and under the low-humidity and low-temperature working condition, the fan feeds gas into the absorption tower; s3, gas enters an absorption tower through a fan, and a gas pipeline arranged at the top of the absorption tower is connected with a chimney for discharging; and S4, discharging the cooling circulating water and the absorption liquid to a sewage pipeline through an overflow port, and sending the cooling circulating water and the absorption liquid to a sewage treatment unit. In the operation process, frequent replacement of adsorption materials or complex equipment maintenance is not needed, the investment of manpower, material resources and financial resources for long-term operation is reduced, and effective treatment of odor can be achieved in the organic industry with low cost.
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