摘要
在反应温度为２６０～３００℃，反应压力为３．０～５．０ＭＰａ，进料空速为４０００～７０００ｍｌ／（ｇ．ｈ）范围内，研究了浆态床ＣＯ加氢制二甲醚过程中工艺条件对双功能催化剂的性能的影响。在２６０～２８０℃温度范围内，ＣＯ、Ｈ２转化率、二甲醚生成速率及其选择性均随反应温度的升高而增加，２８０℃达到最高值。在进料空速为４０００～６０００ｍｌ／（ｇ．ｈ）范围内，提高进料空速可提高二甲醚和甲醇当量生成速率，但ＣＯ单程转化率降低，继续提高进料空速，二甲醚生成速率反而降低，而甲醇生成速率几乎不受空速的影响。随着反应压力的增加，ＣＯ转化率、二甲醚生成速率以及甲醇生成速率均增加。
The effects of process variables including temperature, pressure and weight hourly space velocity (WHSV) on catalytic performances of a dual catalyst for liquid phase synthesis of dimethyl ether(DME) from syngas were studied in a slurry reactor under 260～300℃,3.0～5.0 MPa and WHSV 4000～7000 ml/(g·h), CO and H 2 conversions and DME productivity and selectivity increased with the temperature going up in a range of 260 280℃, and reached their maximum at about 280℃. As WHSV increased from 4000 to 6000 ml/(g·h), both DME and methanol productivities increased whereas single pass CO conversion decreased.With WHSV continuously rising up higher, DME productivity decreased, and MeOH productivity almost unchanged. As pressure was increased in the range considered, conversions of CO and H 2 and productivities of DME and MeOH increased rapidly.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1997年第6期34-39,共6页
Natural Gas Chemical Industry
基金
山西省自然科学基金
关键词
二甲醚
甲醇
浆态床
合成气
催化剂
一氧化碳
dimethyl ether, methanol, slurry reactor, syngas, dual catalyst
