Multifunctional sulfur-resistant methanation transformation process adapting to coal gas
A multi-functional and technological technology, applied in the petroleum industry, gas fuels, fuels, etc., can solve the problems of difficult desulfurization and decarbonization process, deactivation of shift catalysts, low shift temperature, etc., to reduce equipment and operating costs, equipment investment and The effect of reduced operating costs and simple process
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Embodiment 1
[0021] Two-stage multifunctional sulfur-resistant methanation and transformation process
[0022] The first level of sulfur resistance-methanation: CO dry basis volume content is 20.63% (CH 4 The raw material gas with a volume content of 11.7% is firstly lowered to 150 degrees by heat exchanger, then enters the separator to separate excess water, enters the detoxification tank to remove dust and other impurities, and reacts with the first-stage multifunctional The gas is heat-exchanged to 450°C and enters the first reactor for the first-stage sulfur-resistant methanation, transformation and hydrolysis reactions. The hot spot temperature of the first-stage reactor bed is 580°C, and the reaction pressure is 3.0MPa. The first-stage reactor The dry basis content of CO in the outlet gas is 14.7%; CH 4 The dry basis content is 15.7%.
[0023] The gas after the first-stage reaction exchanges heat with the inlet raw material gas, and is cooled to 450°C by the medium-pressure steam p...
Embodiment 2
[0028] Two-stage multifunctional sulfur-resistant methanation and transformation process
[0029] The first stage of sulfur resistance-methanation: the raw material gas with a CO dry basis content of 22.3% (CH4 content of 8.7%) is first reduced to 150 degrees by a heat exchanger, and then enters a separator to separate excess water, and then enters a degasser. After removing dust and other impurities in the poison tank, the gas after the first-stage multifunctional reaction is exchanged with the gas to 430°C, and enters the first reactor for the first-stage sulfur-resistant methanation, transformation and hydrolysis reactions. The first-stage reactor bed The hot spot temperature is 650°C, the reaction pressure is 3.0MPa, and the dry basis content of CO in the outlet gas of the first stage reactor is 15.1%; the dry basis content of CH4 is 17.2%.
[0030] The gas after the first-stage reaction exchanges heat with the inlet raw material gas, and is cooled to 450°C by the medium-p...
Embodiment 3
[0034] Level 1 multifunctional sulfur-resistant methanation and transformation process
[0035] The first level of sulfur resistance-methanation: CO dry basis content is 14.5% (CH 4 9.4% raw material gas) first heat exchanger to reduce the temperature to 100 degrees, then enter the separator to separate excess water, enter the detoxification tank to remove dust and other impurities, and react with the first stage multifunctional The gas is heat exchanged to 410°C and enters the first reactor for the first-stage sulfur-resistant methanation, transformation and hydrolysis reactions. The hot spot temperature of the first-stage reactor bed is 580°C, the reaction pressure is 3.2MPa, and the CO in the reactor outlet gas The dry basis content is 9.6%; CH 4 The dry basis content is 15.2%.
[0036] H after 1st order reaction 2 / CO ≈ 3.5, organic sulfur hydrolysis rate 99.2%
[0037] Molybdenum-based multifunctional catalyst is used in the above process, and the volume space veloci...
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