Membrane condensation recovery device for 1, 1-dichloroethylene organic waste gas

By treating 1,1-dichloroethylene organic waste gas with acid removal and demisting, combined with the automatic control of buffer tanks and gas-liquid separators, the problems of pH value, water content and liquid level management in existing equipment have been solved, achieving efficient and safe waste gas treatment and recovery.

CN223490450UActive Publication Date: 2025-10-31SHANDONG XINGLU CHEM CO LTD
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Patent Information

Application Number
CN202423059132.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-10-31
Estimated Expiration
2034-12-11

AI Technical Summary

Technical Problem

Existing 1,1-dichloroethylene organic waste gas treatment devices neglect pH value, moisture content, temperature control, and gas-liquid separator level management during the treatment process, leading to problems such as waste gas component agglomeration, gas-liquid carryover, pipeline blockage, and unstable pressure inside the container, affecting treatment efficiency and safety.

Method used

A membrane condensation and recovery device for 1,1-dichloroethylene organic waste gas was designed. The device ensures that the pH is between 7.5 and 9.5 and the water content is ≤6% through deacidification and demisting treatment. A buffer tank is set up to stabilize the gas pressure, the gas-liquid separator automatically controls the liquid level, the compressor frequency is regulated, and a plate condenser and membrane separation system are used to achieve uniform component distribution and efficient condensation.

Benefits of technology

It effectively reduces the risk of waste gas component agglomeration, improves recovery efficiency, reduces energy consumption, ensures stable system operation, avoids equipment blockage and safety hazards, and achieves efficient and safe waste gas treatment.

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Abstract

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a membrane-method condensation recovery device for 1, 1-dichloroethylene organic waste gas. Comprising a vinyl chloride waste gas raw material pipeline, the vinyl chloride waste gas raw material pipeline is connected with a demister through a deacidification tower, the demister is connected with a buffer tank, the buffer tank is connected with a gas-liquid separation tank through a compressor, the gas-liquid separation tank is connected with a condenser through a precooler, the condenser is connected with a liquid collection tank, and the liquid collection tank is connected with the precooler through a non-condensable gas pipeline. The precooler is connected with the membrane separation system, the upstream of a membrane of the membrane separation system is connected with the oxygen cracking system, the downstream of the membrane of the membrane separation system is connected with the buffer tank, the gas-liquid separation tank is provided with a working liquid circulation pipeline, a compressor outlet pipeline is provided with a machine head outlet temperature transmitter, and the working liquid circulation pipeline is provided with a pH meter. The waste gas is firstly subjected to deacidification and demisting treatment, and the temperature of the waste gas at the outlet of the compressor is monitored, so that the risk of agglomeration of waste gas components in the device is reduced, and the liquid level in the gas-liquid separator is automatically controlled within a certain range.
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