Gasification Nozzles and Gasifiers

Abstract

The invention discloses a gasification nozzle, which includes a conveying part for conveying materials, and an injection part connected to the end of the conveying part for spraying materials. The conveying part includes a conveying main pipe (1) and at least two stages of conveying branch pipes. The main pipe communicates with the first-stage delivery branch pipe (31) and the adjacent two-stage delivery branch pipes through a flow divider. At least one flow divider includes a base body, and a plurality of through holes (211) are opened on the base body; each flow divider also includes a polygonal pyramid, and each side of the polygonal pyramid is connected with a part of the pipe wall of the delivery main pipe or with two adjacent stages A part of the pipe wall of the upper delivery branch pipe of the delivery branch pipe respectively encloses the guide surface of each through hole, and the side surface of the polygonal pyramid covers the top surface of the base body. The invention also discloses a gasifier provided with the above-mentioned gasification nozzle. The invention can evenly divide the flow of materials in the gasification nozzle, and prevent the powder accumulation and clogging of the materials, thereby improving the production efficiency of the gasification furnace.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a gasification nozzle and a gasifier. Background technique [0002] Coal gasification technology is the basis for the development of coal-based chemicals, liquid fuels, IGCC power generation, hydrogen production and other processes, and is a leading technology in the coal chemical industry. Due to the rapid development of industries such as synthetic ammonia, methanol, dimethyl ether, coal-to-oil, and coal-to-olefins, China's coal gasification process is rapidly transitioning from the old-fashioned UGI furnace lump coal intermittent gasification to the advanced pulverized coal gasification process. There is a strong demand for various types of pulverized coal gasification technology and equipment. [0003] The gasification reaction is carried out under high temperature and pressure conditions. Among them, the gasification nozzle is used to make the materials such as coal p...

AI Technical Summary

Problems solved by technology

[0004] However, due to the unreasonable structure of the flow divider in the prior art, the material cannot be divided evenly through the flow divider, and powder accumulation and blockage often occur in the structural dead ends of the flow divider

As a result, the gasification nozzle cannot quickly co-flow and eject the material and gasification agent, and the flame of the gasification nozzle is unstable and uneven; which in turn leads to a low carbon conversion rate of the gasification furnace and a large amount of gasification residue

In addition, the gasification nozzle is located in the high-temperature and pressurized operating environment of the gasification furnace, so the maintenance workload is relatively large, and the frequent blockage of the flow divider increases the maintenance burden of the gasification nozzle, resulting in a decrease in the production efficiency of the gasification furnace

Therefore, the gasification nozzle in the prior art needs to be improved

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