Efficient steam boiler for gasification and combined combustion of pulverized coal

A steam boiler and pulverized coal technology, which is applied in steam boilers, granular/powdered fuel gasification, steam generation, etc., can solve the problems of heavy operation and management workload, increased equipment investment, and affecting the burnout rate of high-temperature flue gas. Achieve the effects of saving space, high combustion efficiency and thermal efficiency, and convenient load adjustment

Active Publication Date: 2015-05-06
青岛青义锅炉有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following problems: coal gasification equipment needs to be equipped, which increases equipment investment, and the workload of operation and management is heavy; because the furnace is low, it affects the burnout rate of high-temperature flue gas that has not been burned out of pulverized coal

Method used

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  • Efficient steam boiler for gasification and combined combustion of pulverized coal

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Embodiment Construction

[0014] like figure 1 The shown high-efficiency pulverized coal gasification and pulverized coal composite combustion steam boiler includes a blower 1, a pulverized coal silo 2, a pulverized coal conveying pipeline 3, a burner 4, a gasification chamber 5, a furnace 6, a horizontal flue 7, The steam superheater 12, the tail shaft 8, the boiler support 9, the blower 1 is connected to the pulverized coal silo 2, and is connected to the gasification chamber 5 through the coal powder conveying pipeline 3, and the burner 4 is connected to the gasification chamber 5; The gasification chamber 5, the furnace chamber 6, the horizontal flue 7, and the tail shaft 8 are connected in sequence, and are installed on the boiler pillar 9 to form a ∏ shape; an unburned belt 60 is arranged above the connection between the furnace chamber 6 and the gasification chamber 5. A jet air inlet 61 and a secondary air inlet 62 are arranged at the bottom of the furnace 6, and a tertiary air inlet 63 is arra...

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Abstract

The invention discloses an efficient steam boiler for gasification and combined combustion of pulverized coal, comprising a blast blower, a pulverized coal bunker, a pulverized coal transmission pipe, a combustion chamber, a gasification chamber, a hearth, a horizontal flue, a steam superheater, a tail shaft and a boiler support, wherein the blast blower is connected with the pulverized coal bunker, and connected with the gasification chamber through the pulverized coal transmission pipe; a combustor is connected with the gasification chamber; the gasification chamber, the hearth, the horizontal flue and the tail shaft are connected in order, and arranged on the boiler support to form an inversed U shape; a non-combustion zone is arranged above the joint of the hearth and the gasification chamber; the hearth is provided with a jet flow air inlet and a secondary air inlet at the bottom; the outlet of the non-combustion zone is provided with a tertiary air inlet; the steam superheater is arranged in the horizontal flue; and the tail shaft is internally provided with a coal economizer and an air preheater. The efficient steam boiler for gasification and combined combustion of pulverized coal disclosed by the invention saves space, reduces dust emission, realizes gasified transmission, and stabilizes combustion; and the burn-off rate of the pulverized coal is above 99%, and the heat efficiency is above 93%.

Description

technical field [0001] The invention relates to the technical field of boiler manufacturing, in particular to a high-efficiency pulverized coal gasification and pulverized coal composite combustion steam boiler. Background technique [0002] Small and medium-sized coal-fired industrial boilers are the main coal-using equipment in my country. There are about 500,000 sets nationwide, with a total capacity of 2 million tons and an annual coal consumption of about 400 million tons. Most of them are chain grate boilers. The average thermal efficiency of these boilers is mostly no more than 70%. At the same time, these boilers generally have simple environmental protection measures, powder (smoke) dust, SO2, NOx can not be discharged up to the standard, and the regional coal pollution is very serious. With the rapid development of my country's economy, the significantly accelerated pace of building a conservation-oriented well-off society, and to meet the strong desire for energy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22B31/00C10J3/48
CPCY02P20/10Y02P20/129
Inventor 王永波张世仓赵敬王明君
Owner 青岛青义锅炉有限公司
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