MTP催化剂的侧线试验积炭失活研究

石油炼制与化工 ›› 2021, Vol. 52 ›› Issue (9): 13-20.

MTP催化剂的侧线试验积炭失活研究

闫国富

大唐内蒙古多伦煤化工有限责任公司

收稿日期:2021-05-17 修回日期:2021-05-28 出版日期:2021-09-12 发布日期:2021-08-30
通讯作者: 闫国富 E-mail:ydfdtdl@126.com

RESEARCH ON COKING DEACTIVATION OF MTP CATALYST IN SIDE-LINE TEST

Datang Duolun Coal Chemical Co., Ltd.

Received:2021-05-17 Revised:2021-05-28 Online:2021-09-12 Published:2021-08-30

摘要/Abstract

摘要： 甲醇制丙烯（MTP）催化剂的积炭失活关乎MTP装置的单耗和碳排放。在MTP侧线试验装置考评了试验剂RZMP-101催化剂及参比剂的性能，结果表明试验剂的单程寿命和丙烯选择性优于参比剂。对第四床层的失活催化剂进行分析表征，结果显示失活试验剂的积炭量更低，表明试验剂在MTP反应中的生焦速率更低，有利于降低MTP装置的碳排放和能耗。大量硬焦类积炭造成失活催化剂酸性下降，孔结构堵塞和外观破损。

关键词: MTP催化剂, 单程寿命, 积炭, 甲醇, 二甲醚, 丙烯

Abstract: Coke deposition over MFI-based MTP catalyst is determining factor on CO₂ emission and energy consumption of the MTP plant. RZMP-101 catalyst and the reference catalyst were parallelly evaluated on the MTP side-line test unit. The results showed that RZMP-101 catalyst possessed longer one-pass lifespan and higher propylene yield/selectivity. The deactivated catalyst sampled from the fourth catalyst bed was characterized. The results illustrated that the deactivated RZMP-101 catalyst had lower coke deposition, indicating lower coking rate during MTP reaction, which would benefit CO₂ emission reduction and energy consumption of MTP plant. The hard coke excessively deposited within mesopores of deactivated catalysts led to the loss of acidity, blockage of inner pore system and damage of extruded cylindrical shape.

Key words: MTP catalyst, one-pass lifespan, coke deposition, methanol, dimethylether, proplyene

闫国富. MTP催化剂的侧线试验积炭失活研究[J]. 石油炼制与化工, 2021, 52(9): 13-20.

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