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Synthetic gas preparation catalyst through reforming natural gas and carbon dioxide

A carbon dioxide and catalyst technology, which is applied in the field of catalysts for natural gas-carbon dioxide reforming to syngas, can solve problems such as difficulties in industrial scale-up, and achieve the effects of low cost, good stability and excellent performance

Inactive Publication Date: 2009-06-10
SHANGHAI HUAYI ENERGY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a catalyst for reforming natural gas-carbon dioxide to produce synthesis gas and its preparation method, so as to solve the problem of catalyst performance caused by the specific surface area and pore volume blockage of the particle catalyst after the existing powder catalyst is formed. The problem of change, thus overcoming the shortcomings of industrial scale-up difficulties

Method used

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  • Synthetic gas preparation catalyst through reforming natural gas and carbon dioxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 2000g spherical γ-Al with a diameter of 1mm into the container 2 o 3 Carrier, add 1020gNi(NO 3 ) 2· 6H 2 O, 30gLa(NO 3 ) 3 , 3200g of water, stirred at room temperature until dissolved. Drain the solution into the container so that it is in the Al 2 o 3 Mix evenly on the carrier and soak for 0.2 hours to make the solution completely adsorbed. The catalyst was dried at 90°C under normal pressure for 6 hours, and then calcined at 700°C for 10 hours to obtain the finished catalyst.

[0028] Take 300g of catalyst and place it in a reactor with a diameter of 57mm, and feed 1:1 CH 4 and CO 2 Reaction gas, its space velocity is 5000h -1 , 850 ° C, 0.1MPa pressure continuous reaction 100h. The reaction results are listed in Table 1.

[0029] Table 1 The conversion and selectivity of natural gas and carbon dioxide as a function of reaction time

[0030]

Embodiment 2

[0032] Add 2000g of spherical γ-Al with a diameter of 5mm into the container 2 o 3 Carrier, add 1900gNi(NO 3 ) 2· 6H 2 O, 30gLa(NO 3 ) 3 , 3200g of water, stirred at room temperature until dissolved. Drain the solution into the container so that it is in the Al 2 o 3 Mix evenly on the carrier and soak for 1 hour to make the solution absorb completely. The catalyst was dried at 100°C under normal pressure for 3 hours, and then calcined at 800°C for 7 hours to obtain the finished catalyst.

[0033] Take 300g of catalyst and place it in a reactor with a diameter of 57mm, and feed 1:1 CH 4 and CO 2 Reaction gas, its space velocity is 5000h -1 , 850 ° C, 0.1MPa pressure continuous reaction 100h. The reaction results are listed in Table 2.

[0034] Table 2 The conversion and selectivity of natural gas and carbon dioxide as a function of reaction time

[0035]

Embodiment 3

[0037] Add 2000g φ1.5×2~3.6mm clover-shaped molecular sieve carrier into the container, add 1020gNi(NO 3 ) 2· 6H 2 O, 30gLa(NO 3 ) 3 , 3200g of water, stirred at room temperature until dissolved. Drain the solution into a container, make it evenly mixed on the molecular sieve carrier, and soak for 0.2 hours to make the solution completely adsorbed. The catalyst was dried at 90°C for 6 hours, and then calcined at 700°C for 10 hours to obtain the finished catalyst.

[0038] Take 300g of catalyst and place it in a reactor with a diameter of 57mm, and feed 1:1 CH 4 and CO 2 Reaction gas, its space velocity is 5000h -1 , 850 ° C, 0.1MPa pressure continuous reaction 100h. The reaction results are listed in Table 4.

[0039] Table 3 The conversion and selectivity of natural gas and carbon dioxide as a function of reaction time

[0040]

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Abstract

The invention relates to a catalyst for preparing synthetic gas by reforming natural gas-carbon dioxide. The catalyst comprises the following compositions by weight percentage: 5 to 20 percent of active ingredient nickel and 75 to 90 percent of carrier, wherein the carrier is gamma-Al2O3, SiO2, molecular sieves, MgO or ZrO2 with the diameter between 1 and 10 millimeters, and has a spherical structure, a cylindrical structure, an annular structure, a clover structure or a Raschig ring structure, and the catalyst is prepared by a constant volume impregnation method. The catalyst prepared by the method can make the conversion rate of natural gas and the selectivity of CO and H2 reach more than 95 percent, and the activity of the catalyst is stable for a long time.

Description

technical field [0001] The invention belongs to the field of catalyst chemistry, in particular to a catalyst for producing synthesis gas by reforming natural gas-carbon dioxide. Background technique [0002] With the improvement of people's awareness of environmental protection, the utilization and control of greenhouse gases have attracted more and more attention. Natural gas-carbon dioxide reforming can effectively convert carbon dioxide greenhouse gas into syngas (a mixed gas of carbon monoxide and hydrogen). Synthesis gas is a very important raw material gas, which can directly synthesize low-carbon alcohols, dimethyl ether, and prepare liquid fuels through Fischer-Tropsch synthesis. Synthesis gas and methanol, synthetic ammonia, hydrogen, etc. prepared by synthesis gas are the basic raw materials for industrial and agricultural development. [0003] Natural gas-carbon dioxide reforming catalysts are mainly divided into two categories, one is noble metal catalysts, and ...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/83B01J35/02C10L3/10
Inventor 王群赖春波廖爱民赵兵兵叶婷施春辉瞿庆英
Owner SHANGHAI HUAYI ENERGY CHEM
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