RTO waste heat comprehensive utilization device

The RTO waste heat utilization system addresses the challenge of handling high-temperature low-concentration VOCs gases by using a gas-water heat exchanger to cool and integrate these gases, achieving efficient VOCs treatment and reducing environmental and economic costs.

CN222670018UActive Publication Date: 2025-03-25SHANGHAI YONGJIANG ENVIRONMENTAL ENG CO LTD
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Patent Information

Application Number
CN202420467863.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-12
Publication Date
2025-03-25
Estimated Expiration
2034-03-12

AI Technical Summary

Technical Problem

Existing industrial processes, such as packaging printing and electronics manufacturing, generate high-temperature low-concentration VOCs gases that are difficult to handle using existing technologies like activated carbon absorption or concentration rotors, often resulting in over-standard emissions or secondary pollution.

Method used

A RTO waste heat utilization system that employs a gas-water heat exchanger to cool high-temperature low-concentration VOCs gases, integrating with low-temperature VOCs gases to meet the temperature requirements for subsequent treatment, thereby reducing the need for additional water treatment and energy consumption.

Benefits of technology

Effectively reduces VOCs emissions by lowering the temperature of high-temperature gases to meet treatment standards, minimizing secondary pollution and investment costs, while optimizing the use of waste heat for energy efficiency.

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Abstract

The utility model relates to the field of waste heat utilization, in particular to an RTO waste heat comprehensive utilization device which comprises a hot water return main pipe, a hot water supply main pipe and a waste gas collecting device for collecting high-concentration waste gas, high-temperature low-concentration waste gas and low-temperature low-concentration waste gas respectively. A pipeline between the hot water return main pipe and the hot water supply main pipe penetrates through the air-water heat exchanger, a water pump and a first heat exchange switching valve are arranged on the pipeline between the hot water return main pipe and the air-water heat exchanger, and a second heat exchange switching valve is arranged on the pipeline between the hot water supply main pipe and the air-water heat exchanger; and the high-temperature low-concentration waste gas pipeline and the low-temperature low-concentration waste gas pipeline are connected and penetrate through the gas-water heat exchanger. Compared with the prior art, the device has the advantages that high-temperature and low-concentration waste gas is cooled by adopting gas-water heat exchange, so that the temperature requirement of subsequent treatment equipment is met; no other emissions or secondary pollution is generated in the process, an environment-friendly equipment chain is shortened for a user, and the investment cost of the user is reduced.
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