Blast furnace slag flushing water waste heat recovery system based on slag content real-time detection

By setting up an impurity content detection device and an electric valve in the blast furnace slag water waste heat recovery system, unmanned monitoring and automatic cleaning of the system are achieved, filter blockage and heating system instability caused by fluctuations in impurity content are solved, cost is reduced and system stability is improved.

CN119687679APending Publication Date: 2025-03-25CHINA CONSTR FOURTH ENG DIV INSTALLATION ENG +1
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Patent Information

Application Number
CN202411860189.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The existing blast furnace slag water waste heat recovery system has problems such as fluctuations in impurity content, resulting in filter blockage and instability in the heating system, and requires 24-hour duty to clean up, which increases labor costs and operating risks.

Method used

A blast furnace slag water waste heat recovery system based on real-time detection of slag content is designed. By setting up an impurity content detection device and electric valve in the waste heat recovery pipeline, unmanned monitoring and automatic cleaning alarm of the system are realized.

Benefits of technology

Real-time detection and automatic control of impurities content in hedging slag water, reducing production and operation costs, and improving the stability and safety of the heating system.

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Abstract

The invention discloses a blast furnace slag flushing water waste heat recovery system based on real-time slag content detection, which is characterized in that a slag flushing water main pipe is connected in parallel with two heat exchange branch pipes, and one heat exchange branch pipe is sequentially connected with a manual valve, an impurity content detection device, an electric valve and a cyclone dirt separator and then is connected to a heat exchanger; the slag flushing water main pipe between the heat exchange branch pipes is connected with an electric valve, the heat exchange branch pipes are connected with the electric valve on the slag flushing water main pipe through a valve control line, the impurity content detection device is connected with a detection branch pipe, the detection branch pipe is communicated with a slag flushing water pool, and the slag flushing water pool is communicated with the slag flushing water pool. The impurity content detection device detects the impurity content in water based on the light transmittance, when the impurity content detection device detects that the slag content exceeds a threshold value, the electric valve behind the impurity content detection device is closed, the electric valves between the heat exchange branch pipes are opened, and when the slag content is smaller than the threshold value, the electric valve behind the impurity content detection device is opened; and the electric valves between the heat exchange branch pipes are closed.
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