CN103910611A - 煤基一步法合成二甲醚 - Google Patents

煤基一步法合成二甲醚 Download PDF

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Publication number
CN103910611A
CN103910611A CN201310007820.9A CN201310007820A CN103910611A CN 103910611 A CN103910611 A CN 103910611A CN 201310007820 A CN201310007820 A CN 201310007820A CN 103910611 A CN103910611 A CN 103910611A
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Prior art keywords
reaction
dimethyl ether
methanol
coal
dme
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CN201310007820.9A
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English (en)
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杨凯善
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Individual
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Priority to CN201310007820.9A priority Critical patent/CN103910611A/zh
Publication of CN103910611A publication Critical patent/CN103910611A/zh
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/09—Preparation of ethers by dehydration of compounds containing hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
    • C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
    • C07C29/152—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases characterised by the reactor used

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

本发明用于能源化工领域，适用于生产二甲醚。其特征在于：反应优势，合成甲醇反应和甲醇脱水反应在一个反应器中完成，反应平衡常数大，反应生成的甲醇立即进行脱水反应生成二甲醚，克服了合成甲醇反应转化率低的弱点。合成气中CO单程转化率高，达到40.0％-75.0％。

Description

煤基一步法合成二甲醚
技术领域
本发明用于能源化工领域，适用于生产二甲醚。
技术背景
国内外现有的二甲醚生产方法主要是间接合成也称二步法，俗称甲醇法，即先由合成气合成甲醇，甲醇在固体催化剂下脱水制成二甲醚。本发明一步法合成二甲醚即合成气在同一反应器中，在复合催化剂的作用下同时进行甲醇合成和甲醇脱水反应，直接生成二甲醚。一步法合成二甲醚流程简单，运行费用低，一次转化率高。
发明内容
本发明的二甲醚一步法加工工艺目的是克服现有技术的缺点，提供一种全新的合成二甲醚的加工工艺。合成二甲醚流程简单，运行费用低，一次转化率高。
本发明合成二甲醚的加工工艺，其特征在于：反应优势，合成甲醇反应和甲醇脱水反应在一个反应器中完成，反应平衡常数大，反应生成的甲醇立即进行脱水反应生成二甲醚，克服了合成甲醇反应转化率低的弱点。合成气中CO单程转化率高，达到40.0％-75.0％。
本发明的二甲醚一步法加工工艺具体操作方法为：以合成气CO+H2为原料注入一个二甲醚反应器中，在复合催化剂作用下，合成气CO+H2以鼓泡形式通过，呈气、液、固三相流化床，即生成二甲醚。其反应式为：2CO+4H2＝2CH3OH
CO+H2O＝CO2+H2
2CH3OH＝CH3OCH3+H2O
总反应式：3CO+2H2＝H3COCH3+CO2
反应压力2.0～10.0mpa，温度230～290c。
具体实施例
实施例
将合成气的CO和H2的按1∶1的比例配成，注入二甲醚反应器中，在复合催化剂作用下，合成气CO+H2以鼓泡形式通过，呈气、液、固三相流化床。在反应压力2.0～10.0mpa，温度230～290c的环境下。经反应生成二甲醚。经过以下反应式：2CO+4H2＝2CH3OH
CO+H2O＝CO2+H2
2CH3OH＝CH3OCH3+H2O
总反应式：3CO+2H2＝H3COCH3+CO2
本发明一步法合成二甲醚的加工工艺，流程简单，运行费用低，一次转化率高，值得应用推广。

Claims (1)

1.本发明为二甲醚的生成流程，其特征在于：反应优势，合成甲醇反应和甲醇脱水反应在一个反应器中完成，反应平衡常数大，反应生成的甲醇立即进行脱水反应生成二甲醚，克服了合成甲醇反应转化率低的弱点。合成气中CO单程转化率高，达到40.0％-75.0％。
CN201310007820.9A 2013-01-09 2013-01-09 煤基一步法合成二甲醚 Pending CN103910611A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310007820.9A CN103910611A (zh) 2013-01-09 2013-01-09 煤基一步法合成二甲醚

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310007820.9A CN103910611A (zh) 2013-01-09 2013-01-09 煤基一步法合成二甲醚

Publications (1)

Publication Number Publication Date
CN103910611A true CN103910611A (zh) 2014-07-09

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CN (1) CN103910611A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104479723A (zh) * 2014-12-03 2015-04-01 中国石油大学(北京) 一种煤基合成气综合利用方法和系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409086A1 (en) * 1989-07-18 1991-01-23 Air Products And Chemicals, Inc. One-step liquid phase process for dimethyl ether synthesis
CN1285340A (zh) * 2000-08-31 2001-02-28 中国石油化工股份有限公司 一种在三相淤浆床中合成二甲醚的方法
CN101934233A (zh) * 2010-09-13 2011-01-05 浙江大学 合成气直接合成二甲醚的催化剂Cu-ZnO/HZSM-5的制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409086A1 (en) * 1989-07-18 1991-01-23 Air Products And Chemicals, Inc. One-step liquid phase process for dimethyl ether synthesis
CN1285340A (zh) * 2000-08-31 2001-02-28 中国石油化工股份有限公司 一种在三相淤浆床中合成二甲醚的方法
CN101934233A (zh) * 2010-09-13 2011-01-05 浙江大学 合成气直接合成二甲醚的催化剂Cu-ZnO/HZSM-5的制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104479723A (zh) * 2014-12-03 2015-04-01 中国石油大学(北京) 一种煤基合成气综合利用方法和系统

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