A formaldehyde production device

CN224308120UActive Publication Date: 2026-06-02HENAN SHENGHONGFENG CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENAN SHENGHONGFENG CHEM CO LTD
Filing Date
2025-06-09
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing formaldehyde production equipment, it is difficult to effectively control the temperature of the absorbent liquid at the top of the formaldehyde absorption tower, and the heat energy released by the solution at the bottom of the tower is not utilized in a reasonable way, resulting in high energy costs and easy polymerization of the solution in the formaldehyde storage tank.

Method used

By installing first and second heat exchangers, jackets, buffer tanks, and a circulating water system in the formaldehyde production unit, heat exchange between different channels of the medium is achieved. Combined with a stirring device and a temperature sensor, the temperature is precisely controlled and thermal energy is utilized.

Benefits of technology

This method effectively controls the temperature of the absorbent liquid at the top of the formaldehyde absorption tower, reduces energy consumption, minimizes polymerization reactions in the formaldehyde storage tank, and improves production efficiency and economic benefits.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224308120U_ABST
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Abstract

This utility model relates to a formaldehyde production device, comprising a first absorption tower, a second absorption tower, a formaldehyde reflux pipe, an intermediate gas conveying pipe, and an absorbent liquid conveying pipe. The formaldehyde reflux pipe is equipped with a first booster pump, a finished formaldehyde conveying pipe, a first regulating valve, and a first heat exchanger. The absorbent liquid conveying pipe is equipped with a second booster pump, a second regulating valve, and a second heat exchanger. The finished formaldehyde conveying pipe is equipped with a formaldehyde storage tank, which has a jacket connected to the first heat exchanger. A first buffer tank is connected to the jacket and the second heat exchanger. The first buffer tank is equipped with an aeration pipe with an aeration hole at one end. A circulating water conveying main pipe is connected to the first buffer tank. Both the circulating water conveying main pipe and the second heat exchanger, as well as the circulating water conveying main pipe and the first heat exchanger, are equipped with circulating water conveying branch pipes. This device can control the temperature of the absorbent liquid at the top of the formaldehyde absorption tower and utilize the heat released from the solution at the bottom of the formaldehyde absorption tower. This utility model is easy to use and has broad market prospects.
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