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Method, system and equipment for catalytic coal gasification

A technology of coal catalytic gasification and gasification equipment, which is applied in the directions of joint combustion mitigation and combination of fuel pre-dry distillation, etc., can solve the problem that gasification equipment cannot continuously discharge slag and other problems

Active Publication Date: 2009-10-14
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a method, system and equipment for catalytic coal gasification to solve the problem in the prior art that the gasification equipment cannot continuously discharge slag after the catalytic coal gasification reaction

Method used

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  • Method, system and equipment for catalytic coal gasification
  • Method, system and equipment for catalytic coal gasification

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Embodiment 1

[0025] In order to enable continuous slagging during coal catalytic gasification, the embodiment of the present invention provides a system for coal catalytic gasification. In this system, coal is gasified with a gasification agent under the action of a catalyst in the gasification equipment. Reaction, the gas-solid separation is carried out on the material after the gasification reaction, the solid after gas-solid separation is sent to the slagging system composed of two-stage slagging equipment, and the gas after gas-solid separation is sent to the washing equipment for washing, washing with water The equipment sends the washed purified gas to the low-temperature methanol washing equipment. The low-temperature methanol washing equipment washes the purified gas with low-temperature methanol, and sends the washed mixed gas of methane, hydrogen and carbon monoxide to the distillation equipment, and the distillation equipment then uses the mixed gas Low-temperature distillation i...

Embodiment 2

[0048] see figure 2 , the embodiment of the present invention also provides a gasification device, which can be applied to a coal catalytic gasification reaction system, and the device includes:

[0049] The reaction unit 40 is connected with the gas-solid separation unit 41 and is used for gasification reaction of coal and gasification agent under the action of catalyst.

[0050] The gas-solid separation unit 41 is connected with the reaction unit 40 and the first slagging unit 42, and is used for separating the gas-solid material from the gasification reaction, sending the gas-solid separation gas into the water washing equipment, and removing the gas-solid material from the gas-solid separation unit. The separated solids are sent to the first slagging unit 42 .

[0051] The first slag discharge unit 42 is connected to the gas-solid separation unit 41 and the second slag discharge unit 43, and a control gas-solid separation unit 41 and the first slag discharge unit are arr...

Embodiment 3

[0060] The coal required for the gasification reaction in the embodiment of the present invention can be bituminous coal or lignite, etc., and the following table is the material of various product gases and total product gases produced after the gasification reaction is carried out using the system and equipment provided by the embodiment of the present invention Quantity ratio:

[0061] coal type

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Abstract

The embodiment of the invention discloses a method for catalytic coal gasification. The method comprises the following steps: delivering pulverized coal to gasification equipment under high pressure of high-pressure rotating equipment, allowing a gasification reaction of the coal and a gasification agent in the presence of a catalyst in the gasification equipment, performing gas-solid separation on substances from the gasification reaction, delivering solid obtained from the gas-solid separation to first cinder discharge equipment, and delivering the solid from the first cinder discharge equipment to second cinder discharge equipment; and washing gases obtained from the gas-solid separation to obtain acidic water and purified gases, performing low temperature methanol washing on the purified gases to obtain a mixed gas of methane, hydrogen and carbon monoxide, distilling the mixed gas at low temperature to obtain the methane, delivering the acidic water to a catalyst recovery plant, and returning the recovered catalyst to mixing equipment. The embodiment of the invention further discloses a system and equipment for catalytic coal gasification. The method, the system and the equipment can help realize continuous cinder discharge under high pressure.

Description

technical field [0001] The invention relates to the field of artificial synthetic natural gas preparation, in particular to a method, system and equipment for catalytic coal gasification reaction. Background technique [0002] my country is a country rich in coal and poor in oil. With the dwindling of oil and natural gas resources, it is of long-term significance to develop clean and efficient coal conversion technology. [0003] Common coal gasification technology, that is, coal is mixed with oxygen (or air) and / or water vapor (H 2 The gasification agent composed of O) undergoes a gasification reaction to generate a small amount of methane (CH 4 ) of synthesis gas (mainly hydrogen, carbon monoxide and carbon dioxide). This coal gasification technology has the disadvantages of high temperature required for gasification reaction, high energy consumption, and high requirements for equipment. [0004] Coal catalytic gasification technology is an important way of clean and ef...

Claims

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Application Information

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IPC IPC(8): C10J3/58
CPCY02E20/18
Inventor 曹文张红梅李金来孙志强陈婷婷陈意心毛艳东杜娟
Owner ENN SCI & TECH DEV
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