Device for optimizing combustion flow field of pulverized coal gasification furnace

Abstract

The invention relates to a device for optimizing a combustion flow field of a pulverized coal gasification furnace, which is beneficial to stable combustion and promotes the gasification process. The device for optimizing the combustion flow field of the pulverized coal gasification furnace comprises a pulverized coal main burner, an ignition burner, an oxygen system, a pulverized coal system, a cooling water system, the gasification furnace, a gas storage tank, a gas adjusting device and a flow measuring device, and an oxygen feeding system, a pulverized coal feeding system and the cooling water system are arranged on a pulverized coal burner body. An ignition device is arranged at the upper part of the pulverized coal burner body, the center of the pulverized coal burner body is an optimizing device air inlet channel and is used for adjusting burner atomization and optimizing the combustion flow field, the burner center air inlet is supplied by a storage tank, and a measuring device and an adjusting device are arranged on the combustion flow field optimizing device. And the lower part of the pulverized coal burner body is provided with a pulverized coal gasification furnace, and synthesis gas generated by combustion reaction is sent out of a boundary area. In the operation stage of the gasification furnace, the combustion flow field is improved by adjusting the central gas flow of the burner, so that the conversion rate of coal is increased.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a device for optimizing the combustion flow field of a pulverized coal gasifier. Background technique [0002] The aerospace furnace belongs to the pulverized coal pressurized entrained flow bed, and the burner top injection structure is adopted, and three pulverized coal pipelines are set up to ensure a balanced injection velocity at all angles of the cylindrical burner, so as to maintain the gasifier gas phase flow field and flame pattern. The gasification furnace uses pure oxygen and a small amount of steam as the gasification agent to partially gasify the pulverized coal to generate a synthesis gas with CO and H2 as the main components, which is washed and sent out of the boundary area. For the gasifier with top-spray single nozzle, the residence time of the reaction medium is short, the carbon conversion rate is not high, and the slag hanging on the water-coo...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device for optimizing the combustion flow field of a pulverized coal gasifier, which solves the problems of poor adaptability to coal types, easy partial burning, and low carbon conversion rate of the existing top-spray pulverized coal burner

Images