High-efficiency energy-saving heat exchange device for formaldehyde production

By using a high-efficiency and energy-saving heat exchange device with a flow plate and multi-chamber structure in formaldehyde production, the problem of temperature control in the methanol oxidation chamber has been solved, achieving efficient heat regulation and stable reaction temperature, thereby improving production efficiency and safety.

CN122083738BActive Publication Date: 2026-09-18SHANDONG SHENGSHI JUNZE CHEMICAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610240751.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-02-28
Publication Date
2026-09-18
Estimated Expiration
2046-02-28

AI Technical Summary

Technical Problem

Existing technologies make it difficult to effectively control the temperature inside the methanol oxidation chamber during formaldehyde production, leading to shortened catalyst life, reduced yield, and increased safety risks.

Method used

The system employs a high-efficiency and energy-saving heat exchange device. By setting up a flow plate and multiple chamber structures on one side of the methanol oxidation chamber, and utilizing the evaporation-condensation phase change cycle of a third medium, it achieves efficient heat transfer and regulation, improves the heat transfer coefficient, and precisely controls the reaction temperature.

Benefits of technology

Stable control of the methanol oxidation chamber temperature was achieved, the heat exchange efficiency was improved by two orders of magnitude, the dependence on the flow rate of the cooling medium was reduced, the equipment investment and maintenance costs were lowered, and the production efficiency and safety were improved.

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Abstract

The application provides a high-efficiency energy-saving heat exchange device for formaldehyde production, relates to the technical field of energy-saving heat exchange, and comprises a first piece, a second piece, a third piece and a flow liquid plate. The application forms a second cavity filled with a third medium between the first piece and the second piece, and a flow liquid plate is arranged in the second cavity to divide the second cavity into a lower chamber and an upper chamber. The flow liquid plate is provided with a first hole part for allowing the gaseous third medium to flow upward and an adjustable hole part for allowing the liquid third medium to flow downward. In the structure, the amount of the third medium participating in the heat cycle is a decisive factor for directly determining the heat exchange amount. The opening area of the adjustable hole part of the flow liquid plate is adjusted to control the backflow of the liquid third medium to the evaporation section, thereby controlling the removal of reaction heat and maintaining the temperature in the methanol oxidation chamber.
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