CAJ | 학술논문

煤制天然气采用耐硫甲烷化催化剂，减小了反应设备体积，对节省投资和降低能耗有积极意义。采用等体积浸渍法制备系列Mo-Ni/γ-Al2 O3耐硫甲烷化催化剂，并对催化剂活性及耐硫性进行评价，考察浸渍液中不同Co和W元素添加量对催化剂活性的影响。结果表明，耐硫甲烷化催化剂活性中心MoS2和WS2的生成有利于提高CO转化率和CH4选择性，促进合成气生成CH4， Co的添加不利于提高催化剂的CO转化率和CH4选择性，而W元素的添加有利于提高催化剂的CO转化率和CH4选择性。在反应温度550℃、压力2 MPa 和空速1800 h-1条件下，n（ H2）：n（CO）=1：1时，CO转化率为64.24%，CH4选择性为52.00%。n（H2）：n（CO）=3：1时，CO转化率为77.90%，CH4选择性为68.41%。
매제천연기채용내류갑완화최화제，감소료반응설비체적，대절성투자화강저능모유적겁의의。채용등체적침지법제비계렬Mo-Ni/γ-Al2 O3내류갑완화최화제，병대최화제활성급내류성진행평개，고찰침지액중불동Co화W원소첨가량대최화제활성적영향。결과표명，내류갑완화최화제활성중심MoS2화WS2적생성유리우제고CO전화솔화CH4선택성，촉진합성기생성CH4， Co적첨가불리우제고최화제적CO전화솔화CH4선택성，이W원소적첨가유리우제고최화제적CO전화솔화CH4선택성。재반응온도550℃、압력2 MPa 화공속1800 h-1조건하，n（ H2）：n（CO）=1：1시，CO전화솔위64.24%，CH4선택성위52.00%。n（H2）：n（CO）=3：1시，CO전화솔위77.90%，CH4선택성위68.41%。
Adopting sulfur-resistant methanation catalyst for synthetic natural gas( SNG )can greatly decrease the volume of the reaction equipment,save investment and reduce energy consumption. A series of Mo-Ni/γ-Al2 O3 sulfur-resistant methanation catalysts was prepared by equivalent-volume impregnation method. The activity and sulfur-resistance of the catalysts,and the effect of different Co or W contents of the impregnation liquid on catalyst activity were investigated. The results showed that active centres MoS2 or WS2 of sulfur-resistant methanation catalyst helped to improve the conversion of CO and the selectivity to CH4 ,and promoted the synthetic gas to produce methane;the addition of Co was not beneficial to the enhancement of CO conversion and the selectivity to CH4 ,and the addition of W was in favor of the increase of CO conversion and the selectivity to CH4 . CO conversion of 64. 24% and the selectivity to CH4 of 52. 00% were attained under the condition as follows:reaction temperature 550 ℃,reaction pressure 2 MPa, space velocity 1 800 h-1 ,and n( H2 ):n( CO)=1:1;when n( H2 ):n( CO)=3:1 and other condition kept the same,the conversion of CO reached 77. 90%,and the selectivity to CH4 was 68. 41%.