Evaporator of high-temperature high pressure natural circulation dry quenching coke waste heat boiler

A natural circulation and waste heat boiler technology, applied in steam boilers, steam generation, lighting and heating equipment, etc., can solve the problems of large occupied space, difficult sealing of elliptical through holes, complex flue layout of shafts, etc. Convenience, beneficial to sealing treatment, and the effect of reducing the workload of manufacturing and maintenance

Inactive Publication Date: 2008-11-26
SUZHOU HAILU HEAVY IND +1
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AI Technical Summary

Problems solved by technology

The disadvantages of the above-mentioned evaporator with an inclined angle arrangement structure are: 1: it occupies a large space, which makes the arrangement of the heating surfaces in the shaft flue more complicated; An elliptical through hole is formed on the shaft flue wall, and it is difficult to seal the elliptical through hole

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  • Evaporator of high-temperature high pressure natural circulation dry quenching coke waste heat boiler

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0009] As shown in Figure 1, each heating surface in the shaft flue of the CDQ waste heat boiler includes: economizer 1, first-stage evaporator 2, second-stage evaporator 3, first-stage superheater 4, and second-stage evaporator Secondary superheater 5. In the present invention, both the first-stage evaporator 2 and the second-stage evaporator 3 are all horizontal tube evaporators with natural circulation, that is, all the tubes constituting the evaporator are parallel to the horizontal plane. In practical applications, the tubes used in the above-mentioned evaporator can be light pipes or finned tubes. For example, the first-stage evaporator 2 can be composed of fin tubes, and the second-stage evaporator 3 can be composed of light tubes. The fully horizontally arranged evaporator is used in the CDQ waste heat boiler, which is more convenient for the layout of ...

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Abstract

The invention discloses an evaporator in a high-temperature and high-pressure natural-circulation dry quenching waste heat boiler. The main technical scheme is as following: the evaporator adopts a natural-circulation style; the pipes forming the evaporator are all arranged into a horizontal disposition structure and adopt light tubes or extended surface tubes. Owing to adopting a complete horizontal-disposition evaporator in the dry quenching waste heat boiler, the arrangement of the heating surface in a vertical flue is more convenient and the workload of manufacturing and maintenance is greatly reduced; besides, the round through holes formed by the horizontal pipes extracted out of the vertical flue are also convenient for a treatment in a sealing way.

Description

Technical field [0001] The invention relates to the field of high-temperature and high-pressure natural circulation CDQ waste heat boilers, in particular to the natural circulation loop evaporator in the shaft flue of the boiler. Background technique [0002] In the shaft flue of the high-temperature and high-pressure natural circulation CDQ waste heat boiler, there are various heating surfaces-including economizer, two-stage evaporator and two-stage superheater. The economizer usually adopts a forced circulation loop and two-stage evaporation. The evaporator adopts a natural circulation loop, and each heating surface, especially the two-stage evaporator and the two-stage superheater, are installed in a suspended form. From the perspective of boiler water circulation safety, the natural circulation evaporator adopts an inclined arrangement in the shaft flue. That is, there is usually an included angle greater than 15 degrees between the tube constituting the evaporator and the ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/02
Inventor 郁鸿凌王润格赵在三杜艳艳程竹静刘幼幼李瑞阳惠建明傅冬钱飞舟钱义忠陈裕娜瞿永康
Owner SUZHOU HAILU HEAVY IND
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