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A kind of coal catalytic gasification method

A coal catalytic gasification, catalytic gasification technology, applied in the field of coal gasification, to achieve the effect of solving water problems and reducing dependence

Active Publication Date: 2019-02-12
ENN SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a coal catalytic gasification method, which can effectively solve the water problem of coal catalytic gasification and purify coal mine wastewater at the same time

Method used

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  • A kind of coal catalytic gasification method
  • A kind of coal catalytic gasification method
  • A kind of coal catalytic gasification method

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Effect test

Embodiment 1

[0053] Embodiment 1: The obtained aqueous catalyst solution is filtered through a filter membrane to obtain an aqueous catalyst solution and water with a first concentration. In this embodiment, the catalyst aqueous solution and water with the first concentration can be obtained through one filtering operation, and the process is simple and easy to implement.

[0054] In the foregoing embodiments, when the obtained aqueous catalyst solution is filtered through a filter membrane, the filter membrane used may be a reverse osmosis membrane, and under the action of the reverse osmosis membrane, one side obtains the first concentration of the catalyst solution, The other side gets water.

Embodiment 2

[0055] Embodiment 2: First, the obtained catalyst aqueous solution is filtered through a filter membrane to obtain the catalyst aqueous solution and water of the second concentration; Catalyst in water. Since the concentration effect when using an evaporator to concentrate is usually better than that when using membrane separation and concentration, the method of combining evaporator concentration and membrane separation concentration in this embodiment is more conducive to making the concentration of the catalyst aqueous solution quickly reach the first concentration. , and when concentrated by an evaporator, impurity ions such as Ca and Mg in the catalyst aqueous solution can be removed.

[0056] In the foregoing embodiments, when the obtained aqueous catalyst solution is filtered through a filter membrane, the filter membrane used may be a reverse osmosis membrane, and under the action of the reverse osmosis membrane, one side obtains a catalyst solution with a second conce...

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Abstract

The invention discloses a coal catalytic gasification method and relates to the technical field of coal gasification. The invention is invented to solve the shortage of water for coal catalytic gasification in the prior art and the serious environmental pollution caused by coal mine wastewater. The coal catalytic gasification method of the present invention comprises: S1, carrying out the catalytic gasification reaction of the coal loaded with the catalyst in the gasifier to obtain coal catalytic gasification ash; S2, using the coal mine wastewater as a washing medium to wash the obtained The coal catalytic gasification ash is washed with water, so as to recover the catalyst in the coal catalytic gasification ash and purify the mine wastewater. The coal catalytic gasification method of the present invention can be used to solve the problem of shortage of water for coal catalytic gasification and at the same time avoid coal mine waste water from polluting the environment.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a catalytic coal gasification method. Background technique [0002] Coal catalytic gasification belongs to the advanced third-generation gasification technology. It is an important way of clean and efficient utilization of coal, and one of the effective process methods for coal-to-natural gas. [0003] In addition to gasification water, the existing coal catalytic gasification process also consumes a certain amount of water for catalyst washing and recovery. However, since coal gasification plants are usually built in coal-rich areas, and most of my country's coal-rich areas are in the water-scarce areas of the central and western regions, the lack of water resources in the central and western regions is in stark contrast to the high water consumption of the coal gasification process, which makes Coal gasification technology is particularly constrained by water in the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/00C10J3/72C02F1/28C02F1/42C02F1/52C02F9/04C02F103/10C02F101/20C02F101/30
CPCC02F1/281C02F1/42C02F1/52C02F1/72C02F9/00C02F2101/20C02F2101/30C02F2103/10C10J3/00C10J3/72C10J2300/093C10J2300/1628C10J2300/169
Inventor 毛燕东芦涛刘雷李克忠
Owner ENN SCI & TECH DEV
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