Organic matter high temperature gasification low-oxygen fractional combustion method

Abstract

The invention discloses an organic matter high temperature gasification low-oxygen fractional combustion method. The organic matter high temperature gasification low-oxygen fractional combustion method specifically comprises the following steps that a pushing mechanism pushes fuel into a ladder reciprocating type fire grate; furnace starting is carried out; air is blown through an air blowing mechanism, and hot air after gasification enters a gasification chamber; the ladder reciprocating type fire grate carries out intermittent falling; a monitoring system a monitors the gasification chamber;the gasified hot air in the gasification chamber enters a high-temperature heat insulation low-oxygen combustion chamber, and high-temperature flue gas is discharged into a heat exchange system through a flue gas circulation channel to be subjected to heat exchange; a monitoring system b carries out monitoring; and a PLC forms a data set according to the monitoring information of the monitoring system a and the monitoring system b, the data set is compared with inner set data value, and whether the gas producing amount of the gasification chamber needs to be controlled or not is judged. Through real-time monitoring of temperature of different combustion segments, the opening degree of air adjusting valves of the air chambers can be controlled, precise air supply is achieved, the fire grate combustion efficiency is improved, bringing in of invalid air is reduced, and the hot losses are reduced.

Description

technical field [0001] The invention relates to the technical field of boiler combustion devices, in particular to a high-temperature gasification and low-oxygen staged combustion method for organic matter. Background technique [0002] Industrial boilers are the heart of boilers, hot blast furnaces and heat carrier furnaces. The generation and reduction of black smoke and nitrogen oxides in flue gas are directly related to combustion technology, and the heat transfer efficiency of thermal energy equipment is directly related to combustion temperature. According to statistics, the total number of industrial boilers in my country is about 600,000, of which floor-fired boilers account for about 70% of the total. The design efficiency of industrial boilers in my country is generally only 1%-3% lower than that of developed countries, but the use efficiency is more than 10% lower. [0003] In the actual operation of industrial boilers, in order to ensure that the primary air has...

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a high-temperature gasification and low-oxygen staged combustion method for organic matter, so as to solve the problems that the existing industrial boilers are fed with too much strong wind, resulting in high boiler exhaust smoke loss and low boiler efficiency, and Existing industrial boilers cannot control the air content well, so as to achieve the purpose of high-temperature gasification and low-oxygen staged combustion of organic matter, to reduce exhaust smoke loss, improve boiler efficiency, and reduce NOx generation

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