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Non-chilling anti-slagging radiant waste heat boiler and its application

A waste heat boiler and anti-slagging technology, which is applied to lighting and heating equipment, combustion methods, and the production of combustible gas, can solve the problems of reducing the heat transfer capacity of the heating surface, operating accidents, slag blocking, etc., and achieve the improvement of heat transfer capacity. Reduce equipment manufacturing and improve separation effect

Active Publication Date: 2014-07-09
SHANGHAI BOILER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the molten ash particles carried in the gas bond on the heating surface, reducing the heat transfer capacity of the heating surface, and in severe cases, slag blockage is formed, causing operation accidents

Method used

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  • Non-chilling anti-slagging radiant waste heat boiler and its application
  • Non-chilling anti-slagging radiant waste heat boiler and its application
  • Non-chilling anti-slagging radiant waste heat boiler and its application

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Embodiment

[0045] Such as Figure 1-5 As shown, a non-chilling anti-slagging radiant waste heat boiler provided by the present invention includes a cylindrical pressure shell 1 with a liner 2 on the inner wall. The lining support plate 27 support of body 1 inner wall. The top of the pressure shell 1 is provided with a high temperature gas inlet 22, the side is provided with a high temperature gas outlet 24, the bottom is provided with a slag pool 8, one side of the slag pool 8 is provided with a slag pool drain port 20, and the bottom of the slag pool 8 is provided with Slag outlet 21. A nitrogen protection chamber 11 is provided on the inner top of the pressure housing 1 , and a protection gas header 12 is provided in the nitrogen protection chamber 11 . A water-cooled wall tube 5 is arranged inside the pressure shell 1 , and an annular gas baffle 7 is arranged between the pressure shell 1 and the water-cooled wall tube 5 , and the gas baffle 7 is arranged coaxially with the pressure ...

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Abstract

The invention discloses a non-chilling anti-slagging radiant waste heat boiler and its application. The non-chilling anti-slagging radiant waste heat boiler is a non-chilling radiant waste heat boiler that can effectively prevent a heating surface from slagging and efficiently trap ash particles. The pressure shell inner wall of the radiant waste heat boiler adopts a refractory and heat insulation material as a liner, thus effectively simplifying the device structure. A gas protection apparatus is arranged in an easy slagging area on a high temperature heating surface. The gas protection apparatus has a sleeve structure, a local gas / vapor film protection area can form on the heating surface to cool the molten ash particles carried in high temperature gas and prevent them from hitting against the heating surface to undergo slagging. Meanwhile, due to the employment of local gas / vapor film protection, compared with a chilling structure, the radiation heat transfer section is long, and the heat transfer efficiency is high. The lower end of a water cooled wall is a flaring structure, and by reducing the gas flow velocity and designing a steering structure, the trapping rate of ash particles in the gas can be enhanced. The radiant waste heat boiler disclosed in the invention is applicable to recovery of high temperature synthesis gas sensible heat in a coal gasification process.

Description

technical field [0001] The invention relates to a device for recovering sensible heat of high-temperature gas produced after gasification or combustion of carbon-containing fuels and its industrial application, in particular to a recovery device for sensible heat of synthesis gas at the outlet of a gasification furnace. Background technique [0002] Integrated Coal Gasification Combined Cycle (IGCC) is one of the cutting-edge technologies for global clean energy utilization. Compared with ordinary coal-fired power generation technology, its advantage is that it can use coal resources more efficiently and greatly reduce Emissions of combustion pollutants. In the Netherlands and Spain, 250MW and 300MW IGCC power plants have been put into operation respectively. Therefore, the complete mastery of this technology is of great significance to the efficient and clean utilization of primary energy in my country. One of the key technologies in the IGCC system is pulverized coal pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/86C10J3/84F23M5/08
CPCY02E20/18Y02P20/10Y02P20/129
Inventor 葛学利乌晓江张建文张艳伟
Owner SHANGHAI BOILER WORKS
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