High-concentration voc cryogenic liquid solvent recovery device

By designing a multi-temperature zone evaporator and condensation mechanism, combined with a rotating scraper cleaning assembly, the clogging problem in the high-concentration VOC condensation and recovery process was solved, achieving efficient VOC solvent recovery and stable equipment operation.

CN122399384APending Publication Date: 2026-07-17LONGWEI ENVIRONMENTAL TECH (ZHEJIANG) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LONGWEI ENVIRONMENTAL TECH (ZHEJIANG) CO LTD
Filing Date
2026-03-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the treatment of high-concentration VOCs, during the condensation and recovery process, the liquid film condenses on the surface of the heat exchanger to form frost-like crystals, which leads to a reduction in the air passage space, an increase in air resistance and thermal resistance, and even blockage, affecting the system's cooling capacity.

Method used

A high-concentration VOC cryogenic liquid solvent recovery device was designed, which adopts a multi-temperature zone evaporator and condensation mechanism, combined with the evaporation mechanism and cleaning components, to achieve precise segmented evaporation and efficient condensation of VOC components. The condensation residue is cleaned by a rotating scraper to avoid blockage.

Benefits of technology

It improves the purity of VOC component separation, ensures stable condensation efficiency, extends equipment operating time, reduces downtime maintenance, and prevents system blockage.

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Abstract

本发明公开了一种高浓度VOC深冷液溶剂回收装置,涉及VOC深冷液溶剂回收技术领域,所述回收装置包括:固定设于装置底座上的进料箱,所述进料箱的一侧固定设有废气进口,其另一侧通过连接管固定连通有蒸发箱,所述蒸发箱内分为多个不同的温区,所述蒸发箱内每个温区的顶部通过出气管固定连通有冷淋箱,所述蒸发箱内设有蒸发机构,所述冷淋箱内设有冷凝机构,且冷淋箱内设有用于对冷凝机构进行清理的清理组件。以解决背景技术中提出冷凝回收过程发生相变,在换热器表面凝结形成液膜,液膜在低温下形成霜状晶体,结霜使气道空间变小,增大了气阻和热阻,甚至造成堵塞而影响系统的制冷能力的问题。
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