Applications of Ni/SiC catalyst to methane production through syngas conversion

A synthesis gas conversion and catalyst technology, applied in physical/chemical process catalysts, hydrocarbon production from carbon oxides, chemical industry, etc., can solve the problems of poor thermal conductivity, fast deactivation, etc., to achieve extended life, good mechanical properties, Ease of implementation at scale

Inactive Publication Date: 2011-04-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Al usually used in methanation catalyst 2 o 3 or ZrO 2 and other inorganic carriers, the thermal conductivity is lower than 10W / (m.K), and the thermal conductivity is poor, so the deactivation is relatively fast

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Take 10ml of 1.7mol / L nickel nitrate solution, add 10g of silicon carbide, and then dry it in an oven at 80°C.

[0022] 2. Put the sample obtained in 1 in the flowing H 2 Heating to 650°C at a speed of 2K / min in the air and holding it for 180min to obtain reduced 10%Ni / SiC

[0023] 3. The sample obtained in step 2 is at 1.5MPa, 600°C, CO:H 2 =1:3(V / V), airspeed 38400h -1 Under the conditions, the conversion rate of CO is 94.7%, the methane selectivity is 86.9%, and the rest is CO 2 .

Embodiment 2

[0025] 1. With the step 1 of embodiment 1.

[0026] 2. Same as step 2 of embodiment 1.

[0027] 3. The sample obtained in step 2 is at 2.0MPa, 600°C, CO:H 2 =1:3(V / V), airspeed 38400h -1 Under the conditions, the conversion rate of CO is 95.8%, the methane selectivity is 88.2%, and the rest is CO 2 .

Embodiment 3

[0029] 1. With the step 1 of embodiment 1.

[0030] 2. Same as step 2 of embodiment 1.

[0031] 3. The sample obtained in step 2 is at 2.5MPa, 600°C, CO:H 2 =1:3(V / V), airspeed 38400h -1 Under the conditions, the conversion rate of CO is 96.4%, the methane selectivity is 88.6%, and the rest is CO 2 .

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Abstract

The invention discloses the applications of a Ni / SiC catalyst to methane production through syngas conversion. Silicon carbide with favorable thermal conductivity and mechanical strength is used as a carrier of a nickel catalyst, wherein the catalyst contains 1-20 percent of nickel metal, and the preparation method is simple and practical. The catalyst can rapidly export a great number of heat generated in a methane production reaction through syngas conversion, avoid congregation of nickel catalyst particles due to partial overheat and inactivation caused by carbon deposition, have the advantages of strong abrasion resistance, high activity, strong carbon deposition resistance, and the like and can be operated at a higher airspeed under high pressure.

Description

technical field [0001] The invention relates to a methanation catalyst, in particular to a nickel catalyst loaded on a silicon carbide carrier. Background technique [0002] With the decrease of the world's oil reserves and extraction, the oil crisis caused by the shortage of oil energy is becoming more and more serious. Therefore, how to efficiently and rationally utilize the existing coal resources on the earth is an important topic of current research. From the perspective of energy utilization, the direct burning of coal and converting it into heat for residential and industrial heating is the most direct way of utilizing heat energy with the highest energy efficiency. However, the distribution of coal is greatly affected by the region, and transportation and storage are subject to relatively large restrictions. For example, the coal reserves in the west of my country are large, while the demand in the east is great. If coal is converted into synthetic gas and then co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C9/04C07C1/04B01J27/224
CPCY02P20/10
Inventor 包信和王传付潘秀莲
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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