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Fine coal pressurization dense phase transporting bed gasification method and device

A gasification device and transport bed technology, applied in the field of gasification, can solve the problems of reduced efficiency and economy, high oxygen consumption, and large investment, so as to improve the overall carbon utilization rate, high gasification efficiency, and reduce the overall investment Effect

Active Publication Date: 2008-08-13
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

The spouted bed gasification technology has high gasification efficiency and is a relatively advanced gasification technology at present, but it has high oxygen consumption and large investment. At the same time, the efficiency and economy of gasifying coal types with high sulfur, high ash and high ash melting point are greatly improved. decline

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  • Fine coal pressurization dense phase transporting bed gasification method and device
  • Fine coal pressurization dense phase transporting bed gasification method and device
  • Fine coal pressurization dense phase transporting bed gasification method and device

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Embodiment Construction

[0033] Combined with Figure 1(a), Figure 1(b), Figure 1(c), figure 2 , one example of which is as follows:

[0034] The pulverized coal pressurized dense-phase transport bed gasification device of the present invention is a device for producing synthetic raw material gas or fuel gas from coal gasification. The air distribution of the gasifier adopts the primary air intake at the bottom and the secondary lateral swirling air intake. way; the device can also be used for coal or other solid fuel combustion.

[0035] In the pulverized coal pressurized dense-phase transport bed gasification method of the present invention, the pulverized coal and gasification agent (air / enriched oxygen / pure oxygen+water vapor) move from bottom to top in the gasifier.

[0036] The gasification raw materials (including coal and desulfurizer) prepared from the raw materials enter the lower part of the gasification furnace through the feeding port 3 through the conveying device, and the feeding method...

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Abstract

A pulverized coal pressure dense transport bed gasification method and installation of the invention relates to gasification technology and employs in-furnace desulfurization craft. Pulverized coal and desulfurizer are sent into gasification furnace through the middle and lower part of gasification furnace by a feeder, and then react with a gasifying agent. Reaction mass flow upward from the bottom of the gasification furnace, and enter into a multistage gas-solid separator from an export on the top of the gasification furnace. Most solids are separated in the gas-solid separator and enter into the low part of the gasification furnace by a high flux return feeder to continue to participate in reaction. Gas products with a small amount of solid enter into a gas cooler which can recover gas manifested heat to generate steam. The enter modes of the gasifying agent are bottom once wind and cyclone twice wind, otherwise, the reactor can also be use to burn. Because of the high-rate cycle, high solid content and high gas-solid mixing in the gasification furnace of the invention, the gasification strength and gasification rate of the gasification furnace can be improved and higher gasification efficiency and carbon conversion rate can be obtained.

Description

technical field [0001] The invention relates to the technical field of gasification, and relates to a pulverized coal pressurized dense-phase transport bed gasification method and device for gasifying coal (or petroleum coke, liquid fuel, gas fuel) to produce synthesis gas or fuel gas. Background technique [0002] Gasification technology is a means of converting solid raw materials (such as coal, petroleum coke, etc.) into gas raw materials. Gasification technology originates from the chemical industry and is used to convert coal or petroleum coke into synthetic raw material gas, mainly including carbon monoxide and hydrogen, for chemical synthesis. In recent decades, gasification technology has been gradually applied in the field of coal gasification gas-steam combined cycle power generation (IGCC). [0003] Existing coal gasification technologies mainly include fixed bed gasification technology, fluidized bed gasification technology and spouted bed gasification technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/48
CPCY02E20/18
Inventor 肖云汉徐祥王岳
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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