A method for preparing liquefied natural gas by sulfur-resistant methanation of coke oven gas
A technology for sulfur-resistant methanation and liquefied natural gas, which is applied in the direction of gas fuel, petroleum industry, fuel, etc., can solve the problems of unspecified simplified desulfurization process, large energy consumption and equipment investment, and complicated process flow, so as to save equipment investment and energy consumption, saving investment and energy consumption, simple process
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Embodiment 1
[0033] In this example, the catalysts used in sulfur-tolerant methanation reactor I and sulfur-tolerant methanation reactor II are the same, and the mass composition of the oxide is MoO 3 15wt%-Co 2 o 3 +La 2 o 3 10wt% / magnesium aluminum spinel 75wt% catalyst, active component MoO 3 and additive Co 2 o 3 +La 2 o 3 It is loaded on the carrier magnesium aluminum spinel by means of sol-gel, and the specific preparation method and process are shown in Example 6 of CN101733115A; the mass composition of the sulfur-resistant methanation catalyst used in the sulfur-resistant methanation reactor III is MoO 3 10wt%-La 2 o 3 30wt% / γ-Al 2 o 3 60 wt%, see CN102463118A Example 4 for the preparation method and process. Adopt above-mentioned catalyzer, its concrete technological process and condition are as follows:
[0034] (1) After deoiling, deamination, debenzene and naphthalene removal, it is composed of H 2 50.0%, CO8.0%, CO 2 4.0%, CH 4 27.0%, N 2 7.0% and C 2-4 The c...
Embodiment 2
[0038] In this embodiment, the catalyst used in the sulfur-tolerant methanation reactor I and the sulfur-tolerant methanation reactor II is the same, and its mass composition is MoO 3 27wt%-Co 2 o 3 +La 2 o 3 8wt% / magnesium aluminum spinel 65wt% catalyst, active component MoO 3 and additive Co 2 o 3 +La 2 o 3 Loaded on the carrier magnesium-aluminum spinel by impregnation, the specific preparation method and process refer to Example 14 of CN103495421A; the mass composition of the sulfur-resistant methanation catalyst used in the sulfur-resistant methanation reactor III is MoO 3 15wt% - ZrO 2 30wt% / CeO 2 -Al 2 o 3 55wt%, see CN102463118A Example 5 for the preparation method and process. Adopt above-mentioned catalyzer, its concrete technological process and condition are as follows:
[0039] (1) After deoiling, deamination, debenzene and naphthalene removal, it is composed of H 2 53.8%, CO7.3%, CO 2 3.7%, CH 4 25%, N 2 6.7% and C 2-4 The coke oven gas with 3.5...
Embodiment 3
[0043] In this example, the catalysts used in sulfur-tolerant methanation reactor I and sulfur-tolerant methanation reactor II are the same, and the mass composition of the oxide is MoO 3 10wt%-Co 2 o 3 5wt% / Al 2 o 3 -ZrO 2 85 wt% catalyst, active component MoO 3 and additive Co 2 o 3 Loaded on the carrier Al by co-precipitation 2 o 3 -ZrO 2 For specific preparation methods and techniques, see Example 3 of CN101733115A; the mass composition of the sulfur-resistant methanation catalyst used in the sulfur-resistant methanation reactor III is MoO 3 20wt%-CeO 2 +La 2 o 3 30wt% / Al 2 o 3 -ZrO 2 50 wt%, see CN102463118A Example 6 for the preparation method and process. Adopt above-mentioned catalyzer, its concrete technological process and condition are as follows:
[0044] (1) After deoiling, deamination, debenzene and naphthalene removal, it is composed of H 2 54.7%, CO6.9%, CO 2 3.5%, CH 4 25.6%, N 2 6.1% and C 2-4 The coke oven gas with 3.2% hydrocarbons fir...
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