Soot-blowing control device and method for boiler furnace based on heat flow online measurement

Abstract

The invention discloses a soot-blowing control device for a boiler furnace based on heat flow online measurement, which comprises a heat flow sensor, a multiplexer, a data collector and an industrial personal computer, wherein the heat flow sensor is arranged on a film-type water wall fin at the periphery of the boiler furnace and connected to the input end of the multiplexer and used for transmitting collected heat flow to the multiplexer; the multiplexer is sequentially connected with the data collector and the industrial personal computer and used for multi-channel switching, signal amplifying and filtering; the data collector is used for converting a heat flow analog signal to a digital signal; and the industrial personal computer is used for analyzing the digital signal transmitted from the multiplexer and sending a soot-blowing signal. The invention can be used for various coal-fired power plants; and according to fouling conditions of heating surfaces in each region of the boiler furnace, realizes the sweeping in a demand quantity for the required region, improves the accuracy and the real time of fouling diagnosis for the heating surfaces of the boiler furnace, reduces the boiler failure, prolongs the lifetime of a soot-blower, saves the maintenance workload of the soot-blower, and the like.

Description

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AI Technical Summary

Benefits of technology

This patented technology helps optimize how well an air pollution controller (APC) controls soots from different areas within a specific type of gas fired plant's boiler. It uses characteristics such as energy loss rates caused by fluctuations in the fuel supply pressure that affect combustion processes, and low limits sets for effective monitoring of these changes over time. By doing this, it provides improved feedback about the quality of emissions produced through burning fossil fuels with minimal environmental impact. Overall, this innovative technical effect allows for better regulation and control strategies for efficient use of soakage systems throughout industrial operations.

Problems solved by technology

This patents discuss various technical problem addressed by this patented paper: how efficiently operate fuel burning facilities while minimizing environmental impact due to their high levels of sulfur content (S), unpredictable changes in combustion process temperatures during startup, increased downtime costs associated with overheating pipings, reduced lifespan of components such as tubers, and decreased productivity rates when replacing them frequently. Existing methods rely heavily on physical models like hot air gun testing to determine if any issues exist before they can lead to failure of these processes.

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