Casting organic waste gas treatment device and method based on normal temperature catalytic oxidation

CN122273299APending Publication Date: 2026-06-26NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
Filing Date
2026-03-24
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Submicron-sized dust, oil mist, and aerosols in the organic waste gas generated during existing casting processes can easily clog catalyst pores, leading to increased system pressure drop and decreased treatment efficiency. Traditional cleaning methods are cumbersome and affect production continuity.

Method used

The rotary drum design and switching mechanism enable online replacement and automatic cleaning of the catalytic oxidation reactor. The same power source drives the air cylinder for reverse air blowing cleaning, and the nozzle generates turbulent airflow. Combined with protective baffles, the idle reactor is protected.

Benefits of technology

It achieves continuous operation of waste gas treatment with zero downtime, improves production efficiency, extends maintenance cycle, and ensures cleaning effect.

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Abstract

This invention relates to a device and method for treating foundry organic waste gas based on ambient temperature catalytic oxidation. The device includes a base, a rotating drum rotatably mounted on the base, several catalytic oxidation reactors equidistantly arranged along the circumference of the drum, an air inlet pipe fixed to the base, and a switching mechanism for rotating the drum to switch between different catalytic oxidation reactors. The catalytic oxidation reactors are used for ambient temperature catalytic oxidation of a mixture of foundry organic waste gas and ozone passing through the air inlet pipe. This invention ensures normal production without downtime by allowing timely online replacement of the catalytic oxidation reactors, thus improving production efficiency.
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