Efficient steam boiler for gasification and combined combustion of pulverized coal

A technology for steam boilers and pulverized coal, which is applied in steam boilers, granular/powdered fuel gasification, steam generation, etc., can solve the problems of large operation and management workload, affecting high temperature flue gas burnout rate, and increasing equipment investment, etc. To achieve the effect of saving space, convenient load adjustment, high combustion efficiency and thermal efficiency

Active Publication Date: 2012-12-12
青岛青义锅炉有限公司
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  • Description
  • Claims
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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] Such as figure 1 A high-efficiency pulverized coal gasification and pulverized coal composite combustion steam boiler shown includes a blower 1, a pulverized coal bin 2, a pulverized coal delivery pipeline 3, a burner 4, a gasification chamber 5, a furnace 6, a horizontal flue 7, Steam superheater 12, tail shaft 8, boiler pillar 9, the blower 1 is connected to the pulverized coal bin 2, and is connected to the gasification chamber 5 through the pulverized coal delivery pipeline 3, and the burner 4 is connected to the gasification chamber 5; The gasification chamber 5, the furnace 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 6 and the gasification chamber 5, and The bottom of the furnace 6 is provided with a jet air inlet 61 and a secondary air inlet 62, and a tertiary air inlet 63 is arranged at the outlet of t...

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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-consuming equipment in my country. There are more than 500,000 units in the country, 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 mostly does not exceed 70%. At the same time, these boilers generally have simple environmental protection measures, powder (smoke) dust, SO2, and NOx emissions cannot meet the standards, and regional coal pollution is very serious. With the rapid development of our country's economy, the pace of building a thrifty well-off society has been significantly accelerated, and to meet the strong desire of the ...

Claims

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Application Information

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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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