Multi-nozzle gasification furnace with top auxiliary burners and application of multi-nozzle gasification furnace

A gasification furnace and multi-nozzle technology, applied in the field of coal chemical industry, can solve the problems of high-temperature waste heat not efficiently recovered, low carbon conversion rate, and high carbon residue, so as to improve the level of comprehensive energy utilization, increase the success rate of ignition, and improve conversion rate effect

Pending Publication Date: 2022-03-22
广西华谊能源化工有限公司 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there are still problems that the high-temperature waste heat generated by the chemical reaction of the gasifier is not efficiently recovered, the conversion rate of carbon is not high enough, and the residual carbon carried away by fly ash and slag is high. These problems have not been effectively solved

Method used

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  • Multi-nozzle gasification furnace with top auxiliary burners and application of multi-nozzle gasification furnace
  • Multi-nozzle gasification furnace with top auxiliary burners and application of multi-nozzle gasification furnace
  • Multi-nozzle gasification furnace with top auxiliary burners and application of multi-nozzle gasification furnace

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Experimental program
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Effect test

Embodiment 1

[0129] The multi-nozzle gasification furnace in this application is used for processing. Firstly, the fuel and combustion-supporting gas are input into the reaction chamber through the ignition start-up burner to start the operation after ignition, temperature rise and pressure increase, and then the first pulverized coal and the first gasification agent are input through the auxiliary burner. Auxiliary feed, the second pulverized coal and the second gasification agent feed are input through the main burner, and the gasification reaction is carried out at a pressure of 4.3MPa(g) and a temperature of 1500°C to obtain a high-temperature crude synthesis at a temperature of 1450°C gas and molten ash. Wherein, the fuel is diesel oil, and the combustion-supporting gas is oxygen. The first pulverized coal and the second pulverized coal are dry pulverized coal, the pulverized coal has a particle size of ≤90 μm accounting for 90 wt%, and the pulverized coal has a particle size of ≤5 μm...

Embodiment 2

[0133] The multi-nozzle gasification furnace in this application is used for processing. First, the fuel and combustion-supporting gas are input into the reaction chamber through the ignition start-up burner to start the process after ignition, temperature rise and pressure increase, and the second pulverized coal and second gasification agent are input through the main burner. The gasification reaction is carried out at a pressure of 4.3MPa(g) and a temperature of 1600°C to obtain high-temperature crude synthesis gas and molten ash at a temperature of 1550°C. Wherein, the fuel is natural gas, and the combustion-supporting gas is oxygen. The second pulverized coal is dry pulverized coal, and the particle size of the pulverized coal is 90wt% with a particle size of ≤90 μm and 10wt% with a particle size of ≤5 μm. The typical value of the moisture content of the pulverized coal is ≤5wt%. The second gasifying agent is a mixture of pure oxygen (oxygen content 99.7V%) and steam, and...

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Abstract

The multi-nozzle gasification furnace comprises a hollow furnace body, a reaction chamber, a radiation waste boiler chamber and a chilling chamber are sequentially arranged in the furnace body from top to bottom, the reaction chamber is communicated with the radiation waste boiler chamber through a gas-slag channel, a downcomer is arranged at the lower end of the radiation waste boiler chamber, and the chilling chamber is communicated with the reaction chamber through a gas-slag channel. The lower end of the descending pipe extends into the chilling chamber; a plurality of main burners are arranged on the outer side wall of the reaction chamber, and an ignition start-up burner and a plurality of auxiliary burners are arranged at the top of the reaction chamber. The invention further provides a using method of the multi-nozzle gasification furnace with the top auxiliary burner. According to the multi-nozzle gasification furnace with the top auxiliary burner and the application of the multi-nozzle gasification furnace, the reaction retention time is prolonged, the carbon conversion rate of the gasification furnace is increased, the energy consumption is greatly reduced, the operation cost is reduced, and the requirement for environmental protection is met.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and relates to a multi-nozzle gasifier with top auxiliary burners and its application, in particular to a multi-nozzle gasifier with top auxiliary burners and a waste heat recovery device and its application . Background technique [0002] Coal gasifier is the core technology of coal gasification island. In recent years, dry pulverized coal feed coal gasifier has gradually gained a large coal gasifier technology market due to its high carbon conversion rate, low oxygen consumption and coal type adaptability. However, there are still problems that the high-temperature waste heat generated by the chemical reaction of the gasifier is not efficiently recovered, the conversion rate of carbon is not high enough, and the residual carbon carried away by fly ash and slag is high. These problems have not been effectively solved. In my country's primary energy, coal accounts for more than 5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50C10J3/86
CPCC10J3/50C10J3/86Y02P20/129
Inventor 赵伟孟庆军黄荣邢屹谈志福王凯黄湛张剑陆春欢
Owner 广西华谊能源化工有限公司
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