Gasification nozzle and gasifier

Abstract

The invention discloses a gasification nozzle. The gasification nozzle comprises a conveying portion for conveying a material, and an injection portion connected to the tail end of the conveying portion and used for injecting the material, wherein the conveying portion comprises a conveying main pipe and a plurality of conveying branch pipes connected with the conveying main pipe through a diverter. The diverter comprises a substrate, the conveying main pipe is connected to the top surface of the substrate, all the conveying branch pipes are connected to the bottom surface of the substrate, and the substrate is provided with a plurality of through holes making the conveying main pipe connected with all the conveying branch pipes; the diverter also comprises a polyhedral cone with the cone base connected to the top surface of the substrate and the cone top positioned in the conveying main pipe, all side surfaces of the polyhedral cone and parts of the sidewall of the conveying total main respectively form a guiding surface of all the through holes, and the side surfaces of the polyhedral cone cover the top surface of the substrate. The invention also discloses a gasifier comprising the gasification nozzle. The material is uniformly diverted in the gasification nozzle to prevent powder accumulation and obstruction of the material in order to improve the production efficiency of a 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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