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Method and equipment for charging dried coal powder in its pressurized gasification

A technology for pressurized gasification and dry coal powder is applied in the field of dry coal powder feeding and device in the process of dry coal powder pressurized gasification, and can solve the problems of difficult operation, complex structure and low gasification efficiency of a gasifier. , to achieve the effect of stable and controllable feeding amount, simple equipment structure and reduced investment cost

Inactive Publication Date: 2002-10-30
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

[0003] The technical problem to be solved in the present invention is to disclose a dry coal powder feeding method and its device in the dry coal powder pressurized gasification process, so as to overcome the complicated structure of the device existing in the prior art, the difficulty in making and the instability of the feeding amount. Defects that lead to difficult operation of the gasifier, low gasification efficiency, and unsafety

Method used

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  • Method and equipment for charging dried coal powder in its pressurized gasification
  • Method and equipment for charging dried coal powder in its pressurized gasification
  • Method and equipment for charging dried coal powder in its pressurized gasification

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Embodiment Construction

[0030] Referring to Fig. 1, method of the present invention comprises the steps:

[0031] The dry coal powder carried by the low-pressure inert gas first enters the first cyclone separator 1, and the dry coal powder enters the low-pressure powder coal bunker 3 through the pipeline at the bottom of the cyclone separator 1 for storage. emptying.

[0032] In order to prevent ratholes and bridging when pulverized coal is unloaded, inert gas is introduced into the conical surface of the low-pressure pulverized coal bunker 3 through the inert gas inlet device 16, and the low-pressure pulverized coal bunker control valve 4 set at the bottom of the low-pressure pulverized coal bunker 3 is opened , send low-pressure inert gas into the low-pressure pulverized coal bunker 3, and the pulverized coal enters the delivery tank 5 connected with it through the pipeline from the low-pressure pulverized coal bunker 3 for standby;

[0033] Close the low-pressure pulverized coal bunker control va...

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Abstract

A method for feeding dried coal powder in pressure gasifying process features that the dried coal powder goes through intermediate material tank where it is pressurized by inertial gas, balance pipe,high-pressure powdered coal cabin and mixer and then into gasifier. Its feeding apparatus is composed of an intermediate material tank, a high-pressure powdered coal cabin and a mixer of carrying gaswith powdered coal. Its advantages are stable and controllable feed, simple apparatus and low cost.

Description

technical field [0001] The invention relates to a dry coal powder feeding method and device in the process of pressurized gasification of dry coal powder, in particular to a method for controlling the flow rate of dry coal powder by a rotary feeding valve, and the dry coal powder is driven by a carrier gas in an airflow The way of conveying is the method and device for feeding the gasification furnace through the nozzle. Background technique [0002] Practice has proved that in the process of pressurized pulverized coal gasification, the feeding method of dry coal powder and the equipment used will directly affect the gasification efficiency, operation stability and system safety of the gasifier. The oxygen-carbon ratio of the gasification furnace is also unstable, and the temperature in the furnace is high and low at times, making it impossible to maintain production. The disclosed charging method and adopted device are not satisfactory, as Chinese patent CN1032746A disclo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04
Inventor 于遵宏龚欣王辅臣刘小军于广锁刘海峰王亦飞周志杰代正华
Owner EAST CHINA UNIV OF SCI & TECH
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