Method for adjusting boiler load and flue gas temperature

By designing a multi-stage economizer system and using multiple valve group combinations, the complexity and limitations of boiler load and flue gas temperature regulation in the existing technology are solved, and the precise adjustment of boiler load and flue gas temperature is achieved, which meets the strict requirements of different processes and equipment, and extends the operating cycle of the boiler.

CN119642185APending Publication Date: 2025-03-18HENAN HUATAI PETROCHEMICAL EQUIP LTD BY SHARE LTD
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Patent Information

Application Number
CN202411671554.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The prior art is difficult to achieve efficient adjustment of boiler load and the temperature of imported flue gas from various environmentally friendly equipment, and there are problems such as large number of valves, large resistance, complex adjustment and difficult to achieve comprehensive temperature regulation.

Method used

By designing a system that includes high and low temperature economizers, the boiler load and flue gas temperature is adjusted using a combination of multiple valve groups (such as full countercurrent, full countercurrent, economizer downstream or countercurrent independent operation, etc.), and allowing economizers at all levels to operate independently or be isolated for broader and more precise temperature regulation.

Benefits of technology

It realizes free and precise adjustment of boiler load and flue gas temperature, meets the strict requirements of flue gas temperature by different production processes and environmentally friendly equipment, extends the long-term operation and maintenance cycle of the boiler, and improves the safety and flexibility of the system.

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Abstract

The invention discloses a method for adjusting boiler load and flue gas temperature, which comprises a system for adjusting boiler load and flue gas temperature, the system comprises coal economizers, a water supply header pipe, a branch pipe I, a branch pipe II, a branch pipe III, a branch pipe IV, a flue and a boiler barrel, the coal economizers comprise a high-temperature coal economizer and a low-temperature coal economizer which are sequentially arranged in the flue, the branch pipe I is arranged at one end of the economizer, the branch pipe II and the branch pipe III are respectively arranged at the other end of the economizer, the branch pipe IV is connected with an outlet header of the low-temperature economizer and the branch pipe III, the water supply header pipe is respectively connected with the boiler barrel through the branch pipe I, the branch pipe II, the branch pipe III or the branch pipe IV, and the branch pipes are respectively provided with a valve group; the high-temperature economizer and the low-temperature economizer can be connected in series, in parallel or independently operated or isolated, combination of multiple working conditions such as downstream or countercurrent or downstream and countercurrent can be achieved, the boiler load, the smoke exhaust temperature and the inlet smoke temperature of all environment-friendly process equipment can be greatly adjusted, the boiler can be rapidly isolated in an accident, and long-period operation of the boiler is facilitated.
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