Multi-burner overhead entrained-flow bed gasification furnace

Abstract

The invention provides a multi-burner overhead entrained-flow bed gasification furnace. The multi-burner overhead entrained-flow bed gasification furnace comprises a shell, and a burner part, a gasification chamber, a cooling chamber and a slag water outlet which are sequentially communicated from top to bottom and are coaxially arranged; the burner part and the slag water outlet are respectivelypositioned at the top end and the bottom end of the shell, and the gasification chamber and the cooling chamber are respectively arranged in the shell; the burner part comprises a burner seat and a burner combination; the burner seat is arranged at the top of the gasification chamber; the burner combination comprises an incandescent light burner and at least two pulverized coal process burners; the incandescent light burner is arranged in the center of the burner seat; the at least two pulverized coal process burners are arranged on the burner seat in a scattered and surrounding mode and are located in the periphery of the incandescent light burner; and a chilling ring pipe, an atomized water spraying device and a lower guide pipe which are the same in internal diameter are coaxially arranged in the cooling chamber from top to bottom in sequence and are fixedly connected in sequence, and the lower portion of the outer side of the lower guide pipe is coaxially sleeved with an upper guide pipe and a cyclone separation dehydrator. The multi-burner overhead entrained-flow bed gasification furnace can guarantee that a gasification device can safely run for a long period.

Description

technical field [0001] The invention belongs to the field of gasification furnaces, in particular to a multi-burner top-mounted entrained-bed gasification furnace. Background technique [0002] The clean and efficient utilization of coal is a major technical issue in the field of energy and environmental protection today, and it is also one of the key technologies for the sustainable development of my country's national economy. [0003] Coal gasification technology can be divided into two types according to the cooling method of high-temperature syngas, one is the pulverized coal pressurized gasification technology represented by the American AP (formerly Shell) company, and the other is the American GE (formerly Texaco Texaco) technology. ) Coal-water slurry pressurized gasification process represented by the company. In recent years, the domestic coal chemical industry has made great progress, and a number of coal gasification processes with independent intellectual prop...

AI Technical Summary

Problems solved by technology

[0004] In the top-mounted single-nozzle structure, such as the GE coal-water slurry process, there is only one burner interface on the top of the gasification chamber, and the operation of the gasifier can only be realized after the preheating, ignition and process burners are installed successively when starting up. The process is complicated , long operation cycle and safety risks

In addition, since only one process burner is arranged on the top, the atomization effect will be poor and the gasification efficiency will be reduced when the coal input is high.

In the multi-nozzle opposed structure such as the gasification process of East China University of Technology, since the opposed burners are arranged in a horizontal position, the flame emitted by the burners is very easy to burn on the furnace wall opposite the burners, so the gasification furnace has to be enlarged diameter, resulting in increased equipment investment and increased gasification ineffective space; in addition, due to the flow field characteristics of the opposing nozzles, the top of the gasifier is likely to overheat, posing a safety hazard

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