Coal water slurry gasification burner system

Abstract

The invention relates to a coal water slurry gasification burner system, and belongs to the field of coal chemical industry of coal water slurry gasification. The system comprises a burner, an oxygensupply system, a fuel gas supply system and a coal water slurry supply system; a central oxygen pipeline, a fuel gas pipeline, a coal water slurry pipeline and a main oxygen pipeline are sequentiallyarranged in the burner from inside to outside; the oxygen supply system is communicated with the central oxygen pipeline and the main oxygen pipeline and supplies oxygen into the burner; the fuel gassupply system is communicated with the fuel gas pipeline and supplies fuel gas into the burner; the coal water slurry supply system is communicated with the coal water slurry pipeline and supplies coal water slurry into the burner; an external igniter is arranged at the top of the burner; the bottom of the burner extends into an external gasification furnace. The processes of ignition, baking, feeding, running and the like of the gasification furnace can be independently and continuously completed by only one burner, so that the burner is prevented from being replaced; and the starting processof the gasification furnace is simplified, and potential safety hazards in the starting process are reduced.

Description

technical field [0001] The invention belongs to the coal chemical industry field of coal-water slurry gasification, and relates to a coal-water slurry gasification burner system. Background technique [0002] Traditional coal-water slurry pressurized gasifiers are all lined with refractory bricks, and the GE (Texaco) gasification process is the most typical. The burner equipment used in it includes two preheating burners and process burners. stand-alone device. The preheating burner is used to heat the furnace of the gasifier to the specified temperature and complete the oven process. A typical preheating burner system is as figure 1 As shown, it is composed of a box body, an ignition rod, an electric igniter, a long light, a fuel air gun and a fuel gas supply system. Among them, the fuel gas supply system includes a main gas pipeline and a pilot lamp branch pipeline, which are fed into the fuel gas gun and the pilot lamp respectively. The process burner is used to send c...

AI Technical Summary

Problems solved by technology

The start-up process of the gasifier is extremely cumbersome, and part of the heat will be lost during the replacement of the burner and the nitrogen replacement process. If the temperature in the gasifier drops below 700°C, the risk of successful feeding of the gasifier will increase.

At the same time, the burner is replaced in a hot state, the working conditions are bad, and there are also potential safety hazards

In addition, the furnace with negative pressure induced air, when the start-up extractor works unstable and the furnace pressure fluctuates, the preheating burner is easy to backfire and hurt people

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