Fine pulverized-coal combustion industrial steam boiler
A pulverized coal combustion and steam boiler technology, applied in the field of pulverized coal fuel boilers, can solve the problems of complex flue gas post-processing system, high maintenance frequency, and less success, and achieve the effect of obvious environmental protection effect and safe and efficient operation.
Inactive Publication Date: 2013-01-30
SHANXI LANTIAN ENVIRONMENTAL PROTECTION EQUIPCO
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Problems solved by technology
Layer fired boiler technology is mature, but the disadvantage is low combustion efficiency and serious pollution
Circulating fluidized bed boilers have high combustion efficiency, but high power consumption, high slag discharge, and high maintenance frequency
Especially when applied to industrial boilers, it is not very successful, and the flue gas post-treatment system is complex and costly
Method used
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[0013] Such as figure 1 As shown, the fine coal-fired industrial steam boiler includes a drum, a furnace 2, a convection flue, an upper economizer, an upper air preheater, a lower economizer, and a lower air The preheater is characterized in that: the upper part of the rear wall of the furnace 2 is provided with a flame-refracting wall and a slag tube 1; figure 2 As shown, two burners 4 are arranged in parallel in the middle and lower parts of the two side walls of the furnace; a convection tube bundle 3 is arranged in the horizontal section of the convection flue.
[0014] The layout of the hanging furnace and the support type convection heating surface is adopted.
[0015] Working process and working principle:
[0016] When the invention works, the boiler feed water first enters the lower-level economizer, is heated upstream in countercurrent, and finally enters the drum from the upper-level economizer through the outlet pipe. The heated water conducts heat exchange in ...
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The invention provides a fine pulverized-coal combustion industrial steam boiler which belongs to the technical field of pulverized-coal fuel boilers, and aims at applying a pulverized-coal combustion technology on an industrial steam boiler. The fine pulverized-coal combustion industrial steam boiler comprises a boiler drum, a boiler furnace (2), a convection smoke flue, and an upper-level coal economizer, an upper-level air preheater, a lower-level coal economizer and a lower-level air preheater which are sequentially arranged in a vertical segment of the convection smoke flue. The fine pulverized-coal combustion industrial steam boiler is characterized in that a flame diversion wall and a coagulated slag pipe (1) are arranged at the upper part of a rear wall in the boiler furnace (2); two combustors (4) are respectively arranged at the lower middle parts of two side walls of the boiler furnace in a parallel manner; and convection pipe bundles (3) are arranged in a horizontal segment of the convection smoke flue. With the structure, the combustion of the boiler is efficient and stable.
Description
technical field [0001] The invention belongs to the technical field of pulverized coal fuel boilers, and in particular relates to fine coal pulverized combustion industrial steam boilers. Background technique [0002] With the rapid development of high-efficiency pulverized coal boilers, small and medium-sized pulverized coal boilers play an increasingly important role. It can not only meet the needs of district heating, but also meet the production steam requirements of industrial and mining enterprises. Fine pulverized coal combustion industrial steam boiler is a new type of boiler. The development of this boiler has fully considered the superiority of the boiler burning this type of coal. The overall layout is compact and beautiful. It is an industrial steam boiler designed to meet the stable combustion of fine coal powder. [0003] Currently well-known coal-fired industrial boilers mainly include layer-fired boilers and circulating fluidized bed boilers. Among them, t...
Claims
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Inventor 王民发韩涛王欢郎凤娥郎鹏德杜铭华赵红卫贾德威任彦斌卢贵文
Owner SHANXI LANTIAN ENVIRONMENTAL PROTECTION EQUIPCO