Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalyst loading method and coal catalytic gasification method

A catalyst and coal gasification technology, which is applied in gasification catalysts, production of combustible gas, petroleum industry, etc., can solve the problems of insufficient catalytic effect of catalysts, low gasification efficiency of gasification process, and low effective loading of catalysts, etc. To achieve the effect of increasing the effective load, improving the catalytic effect, and promoting dissociation

Active Publication Date: 2020-10-27
ENN SCI & TECH DEV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Catalyst loading is the first step in the catalytic gasification process. In the previous loading process, the catalyst is usually dissolved in water, and then the catalyst aqueous solution is mixed with the coal gasification raw material, and the excess water is dried and evaporated to complete the catalyst loading. In this process, the alkali The physical mixing between the metal or alkaline earth metal catalyst and the coal gasification raw material mainly occurs, which makes the effective load of the catalyst low, which is not conducive to the migration of the catalyst in the coal gasification reaction, which causes the catalytic effect of the catalyst to not be exerted and leads to gasification Process gasification efficiency is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst loading method and coal catalytic gasification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The lignite of 40 mesh or more and the sodium carbonate of 200 mesh are mechanically mixed at a mass ratio of 10:1 and put into the reaction kettle, and water is added to the reactor at 5% of the mass of the coal to wet the surface of the coal particles and dissolve the catalyst. After the heat is released, after the temperature of the coal and the catalyst is lowered to room temperature, water of the same volume as the mixture of the coal and the catalyst is added to the reaction kettle. Heat up and increase pressure, react for 5h at a temperature of 200°C and a pressure of 2MPa, and then pass a mixture of oxygen and carbon dioxide (oxygen to dioxide ratio 1:1) into the reaction system, which controls the oxygen The molar ratio of total inflow to carbon in coal is 3:1, and the molar ratio in total inflow of carbon dioxide to carbon in coal is 2:1. The pH value of the mixed solution is 7.0 after the infusion time is 1h, and the reaction is stopped. The coal sample loaded...

Embodiment 2

[0060] The bituminous coal with a high degree of metamorphism above 80 mesh and potassium carbonate with 300 mesh are mechanically mixed with a mass ratio of 3:1 and put into the reactor, and 8% coal mass water is added to it to make the surface of the coal particles wet and dissolve The catalyst releases heat. After the temperature of the coal and the catalyst is lowered to room temperature, the volume of water added to the reactor is twice the volume of the mixture of the coal and the catalyst. Heat up and increase pressure, react for 2h at a temperature of 300°C and a pressure of 3MPa, and then introduce a mixture of oxygen, carbon dioxide and nitrogen (the ratio of oxygen, carbon dioxide and nitrogen is 1:1:1), and the oxygen is controlled The molar ratio of the total inflow of carbon dioxide to the carbon in the coal is 5:1, and the molar ratio of the total inflow of carbon dioxide to carbon in the coal is 4:1. After 2.5h, the PH value of the mixed solution is 8.0, and the ...

Embodiment 3

[0062] The sub-bituminous coal of 120 mesh or more and calcium oxide of 200 mesh are mechanically mixed with a mass ratio of 5:1 and then put into the reactor, and 7% of the coal mass is added to the reactor to make the surface of the coal particles wet and dissolve the catalyst to release heat After the temperature of the coal and the catalyst is lowered to room temperature, water with the same volume of the coal and the catalyst mixture is added to the reaction kettle. At the same time, sodium hydroxide with a mass of 15% coal is added to increase the alkalinity of the solution. Heating and increasing pressure, the temperature is 300 ℃, the pressure is 1.0 MPa conditions for 3 hours, and then a mixture of oxygen, carbon dioxide and nitrogen (oxygen, carbon dioxide and nitrogen ratio 1:2:2), which controls the oxygen The molar ratio of total input to carbon in coal is 4:1, the molar ratio of total carbon dioxide to carbon in coal is 3:1, the PH value of the mixture is 7.0 afte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of coal catalytic gasification, in particular to a loading method of a catalyst as well as a coal catalytic gasification method. The effective loading quantity of the catalyst can be improved and the catalytic effect of the catalyst can be improved, so that the coal gasification conversion efficiency can be improved. The embodiment of the invention provides the loading method of the catalyst. The loading method comprises the following steps: mixing a coal gasification raw material with the catalyst, wherein the coal gasification raw material is coalpowder or coke; performing heat treatment on a mixture of the coal gasification raw material and the catalyst, to dissociate alkali metal ions and / or alkaline earth metal ions out of the catalyst, and carry out an ion exchange reaction with active hydrogen in the coal gasification raw material, so that the catalyst is loaded. The embodiment of the invention is applied to preparation of methane through coal gasification.

Description

Technical field [0001] The invention relates to the technical field of coal catalytic gasification, in particular to a catalyst loading method and a coal catalytic gasification method. Background technique [0002] Coal catalytic gasification is a process in which alkali metal or alkaline earth metal catalysts are loaded on the surface of coal gasification raw materials to produce rich methane gas and tar at a certain pressure and temperature (600-800°C). [0003] The catalyst loading is the first step of the catalytic gasification process. In the previous loading process, the catalyst is usually dissolved in water, and then the catalyst aqueous solution is mixed with the coal gasification raw materials, and the excess water is dried and evaporated to complete the catalyst loading. In this process, the alkali The main physical mixing between the metal or alkaline earth metal catalyst and the coal gasification raw material makes the effective load of the catalyst low, which is not c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/00
CPCC10J3/00C10J2200/06
Inventor 祖静茹李克忠刘雷杨瑛
Owner ENN SCI & TECH DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products