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A gasifier nozzle

A gasification agent and nozzle technology, which is applied in the gasification process, the details of the gasification device, and the gasification of granular/powder fuels, etc., can solve the problems of reducing the strength of the equipment, high power consumption, and no energy saving, so as to improve the ability to withstand high temperature. High pressure environment capability, ease of manufacture and maintenance, improved cooling effect

Active Publication Date: 2017-04-19
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the plasma spray gun only transports water vapor, since the water vapor needs to be heated to 4000°C by electricity, the power consumption is huge and not energy-saving. Moreover, the decomposition products of water vapor are directly sprayed into the furnace at such a high temperature, which may easily cause local temperature in the furnace. If it is too high, it will have an adverse effect on the life of the gasifier
In addition, since the plasma spray guns are arranged in multiple layers, and each layer is provided with multiple plasma spray guns in a ring shape, and water vapor spray guns are also provided between the intervals of the plasma spray guns, it can be seen that the number of nozzles in the local area of ​​the equipment is very large. , which seriously reduces the strength of the equipment, which is not conducive to the stable operation of the equipment under high temperature and high pressure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]The gasification agent is a mixed gas of oxygen and water vapor. The inner shrinkage half angle α of the gasification agent nozzle 13 is 45°, and the outer expansion half angle β is 30°. The ratio of the tube inner diameter h, ie d:h, is 1:6. The temperature of the gasification agent is 320°C, the pressure is 4.6MPa, and the flow rate of oxygen is 50Nm 3 / h, the steam flow rate is 50kg / h, the gasification agent is sprayed into the gasification furnace from the gasification agent nozzle 13 at a speed of 110m / s, the temperature in the gasification furnace is 1400-1700°C, and the pressure is 4.0MPa. Outside the gasification agent nozzle, the cooling water flow in the cooling water coil is 3.4m 3 / h, the cooling water flow rate is 15m / s, and the temperature difference after the cooling water flows through the cooling water coil and the cooling water jacket 11 is about 5°C.

Embodiment 2

[0029] The gasification agent is a mixed gas of oxygen and water vapor. The inner shrinkage half angle α of the gasification agent nozzle 13 is 60°, and the outer expansion half angle β is 45°. The ratio of the inner diameter h of the tube, ie d:h, is 1:10. The gasification agent is sprayed into the gasification furnace from the gasification agent spray nozzle 13 at a speed of 200m / s, and the rest is the same as in Embodiment 1.

[0030] When the present invention is working, the gasification agent enters from the gasification agent inlet 14, flows through the thick pipe 81, the variable diameter joint 82, and the thin tube 83, and then quickly sprays out from the gasification agent nozzle 13, and enters the gasification furnace body Gasification reaction with carbonaceous fuels. During this process, the high temperature generated by the gasification reaction in the gasification furnace will cause some damage to the gasification agent nozzle, so the cooling water coil outside...

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Abstract

The present invention relates to a gasification agent nozzle, which is characterized by comprising a center pipe, a water inlet coil pipe, a water outlet coil pipe, a cooling water jacket and a gasification agent spraying head, wherein the center pipe comprises a thick pipe, a diameter change joint and a thin pipe, the end portion on one side of the thick pipe is provided with a gasification agent inlet arranged in an integrated manner, the other end of the thick pipe is connected with the thin pipe through the diameter change joint, the other end of the thin pipe is connected with the inner pipe of the gasification agent spraying head, the cooling water jacket is arranged outside the thin pipe of the center pipe in a sleeve manner, one end of the cooling water jacket is connected with the outer pipe of the gasification agent spraying head, the other end is supported and welded through a positioning bracket, the water inlet coil pipe is arranged outside the thick pipe of the center pipe, one end of the water inlet coil pipe is connected with the cooling water inlet, the other end extends into the deep position inside the cooling water jacket, the water outlet coil pipe is arranged outside the thick pipe of the center pipe, one end of the water outlet coil pipe is connected with the cooling water outlet, and the other end extends into the shallow position inside the cooling water jacket. According to the gasification agent nozzle of the present invention, the single channel structure only conveying the gasification agent is adopted, such that the chemical reaction only occurs in the furnace body so as to effectively prevent the overheating problem of the spraying head and improve the service life of the gasification agent nozzle.

Description

technical field [0001] The invention relates to a gasification agent nozzle, in particular to a single-channel gasification agent nozzle used in a slag gasification furnace and only transports the gasification agent. Background technique [0002] The gasification agent nozzle is one of the key components of the gasifier. During the use of the gasifier, the nozzle needs to be maintained or replaced regularly. However, the price of the nozzle is relatively expensive, and frequent replacement of the nozzle has a great impact on the cost of the gasifier. Therefore, improving the service life of the nozzle can not only realize the stable, long-term and full-load operation of the gasifier, but also do not need to set up a spare furnace, which greatly reduces the investment cost of the enterprise and improves the operating efficiency. [0003] At present, there are two types of gasification agent nozzles for gasification furnaces, one is a nozzle that simultaneously delivers carbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/00C10J3/48B05B1/00
CPCB05B1/00C10J3/00C10J2200/152C10J2300/0953C10J2300/0956C10J2300/0959C10J2300/0976
Inventor 徐春霞曲思建董卫果王鹏陈贵锋张科达杨宗仁唐楠郭良元晁俊楠李小亮邹震江
Owner CCTEG CHINA COAL RES INST