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Method for retrofitting coal-fired boiler into biomass boiler

A technology for coal-fired boilers and boilers, which is applied in the direction of combustion methods, combustion product treatment, and solid fuel combustion. The effect of high efficiency and low investment cost

Active Publication Date: 2016-01-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for transforming a coal-fired boiler into a biomass boiler, so as to solve the technical problems that the existing coal-fired boilers are seriously polluted and the heat of the flue gas cannot be fully utilized

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  • Method for retrofitting coal-fired boiler into biomass boiler
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  • Method for retrofitting coal-fired boiler into biomass boiler

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Embodiment Construction

[0017] Embodiment of the method for transforming the coal-fired boiler of the present invention into a biomass boiler: as Figure 1-4 As shown, the pressure-bearing parts of the coal-fired boiler are kept basically unchanged, and the coal-fired chain boiler is transformed into a biomass briquette fuel boiler by transforming the boiler's feeding system, combustion system, air smoke system, water supply system, and slag removal system. For existing boiler equipment, on the premise of ensuring that the output of the boiler is not reduced, the exhaust gas temperature is reduced to below 100°C, the thermal efficiency of the boiler is improved, the boiler flue gas discharge reaches the standard, and the clean energy replacement of the coal-fired boiler is realized.

[0018] The method mainly includes the following steps. In the first step, the main combustion chamber 4 is formed by the front arch, the side arch and the rear arch, and the main combustion chamber 4 is a primary combust...

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Abstract

The invention discloses a method for retrofitting a coal-fired boiler into a biomass boiler. The method comprises the following steps that firstly, a splitting decomposition combustion chamber is arranged behind a front arch and in front of a primary combustion chamber; secondly, a secondary combustion chamber is arranged behind the primary combustion chamber; thirdly, a smoke waste heat utilization device is arranged behind a boiler body, and a first water pipeline used for injecting water in a boiler barrel penetrates the smoke waste heat utilization device, so that water in the first water pipeline is preheated by smoke exhausted out of flues; and fourthly, a dust removal device is connected to the smoke waste heat utilization device. The existing coal-fired boiler is retrofitted and changed into the biomass boiler for burning biomass fuel, and biomass fuel is adopted, is low in carbon and environment-friendly and saves energy; the smoke waste heat utilization device is arranged to preheat the first water pipeline, heat exchange efficiency is high, smoke waste heat is fully utilized, and fuel can be saved; and the overall existing coal-fired boiler does not need to be replaced, and the investment cost is low.

Description

technical field [0001] The invention relates to the field of heating boilers, in particular to a method for transforming a coal-fired boiler into a biomass boiler. Background technique [0002] Most of the existing boilers use coal as fuel, and use the high-temperature flue gas generated by burning coal to provide heat energy. When the flame in the combustion chamber burns, the temperature in the center of the combustion chamber is higher than the ambient temperature, and when the flame is discharged with the smoke, it will carry a lot of heat, which will cause a lot of waste of heat generated by combustion, and the heat exchange efficiency will be improved. lower. Coal-fired boilers consume a lot of energy and cause serious smoke and dust pollution. For example, Chinese patent CN102661604A (application publication date is 2012.09.12) discloses a chain boiler with energy-saving and emission-reducing functions. , The chain grate is located at the bottom of the furnace. A ...

Claims

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Application Information

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IPC IPC(8): F23B10/02F23B30/08F23J3/02F23J15/08
Inventor 彭旭高汉英宋卫娟罗叶挺董璐
Owner CHINA PETROLEUM & CHEM CORP
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