Title:
SYSTEM FOR SIMPLIFYING COAL-TO-METHANOL BY ADJUSTING CARBON-HYDROGEN RATIO WITH HYDROGEN AND WORKING METHOD OF SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/199263
Kind Code:
A1
Abstract:
A system for simplifying coal-to-methanol by adjusting a carbon-hydrogen ratio with hydrogen and a working method of the system, relating to the technical field of coal chemical industry. The system mainly comprises a coal preparation unit, a coal gasification unit, a carbon-hydrogen ratio adjusting unit, a synthesis gas cooling unit, a low-temperature methanol washing unit, a synthesis gas-based methanol or methane preparation unit, a water treatment unit, a power generation unit, an electrolytic hydrogen production unit, a hydrogen collection unit, an oxygen collection unit, an air separation unit, and a sulfur recovery unit. Hydrogen obtained by electrolytic hydrogen production of renewable energy is used to adjust a carbon-hydrogen ratio of synthesis gas of the coal gasification unit, and the adjusted synthesis gas is directly used for preparing methanol or methane from the synthesis gas without changing a unit, thereby reducing the load of the system and reducing the operation cost. The low-temperature waste heat of the coal gasification unit and synthesis gas cooling unit is used for power generation, electric energy is provided for electrolytic hydrogen production, no extra power input is needed, and energy consumption and production cost are reduced. Pure oxygen generated in the electrolytic hydrogen production process is used for the coal gasification unit, the load of the air separation unit of the system is reduced, and the production operation cost is reduced.
Inventors:
LIU RONG (CN)
WANG QI (CN)
LI XU (CN)
LIU LIANBO (CN)
GAO SHIWANG (CN)
WANG QI (CN)
LI XU (CN)
LIU LIANBO (CN)
GAO SHIWANG (CN)
Application Number:
PCT/CN2022/075615
Publication Date:
September 29, 2022
Filing Date:
February 09, 2022
Export Citation:
Assignee:
HUANENG CLEAN ENERGY RES INST (CN)
International Classes:
C07C29/151; C07C1/04; C07C9/04; C07C31/04
Domestic Patent References:
| WO1995031423A1 | 1995-11-23 |
Foreign References:
| CN113045382A | 2021-06-29 | |||
| CN111559956A | 2020-08-21 | |||
| CN101003359A | 2007-07-25 | |||
| CN212222831U | 2020-12-25 | |||
| US4348486A | 1982-09-07 | |||
| JPH069969A | 1994-01-18 |
Other References:
JIANWEI LI, JIAOJIAO LEI, XIN XIN, FENG BAI: "Modeling Simulation and Analysis for Coal Gasification Coupled with Methane", JOURNAL OF HUNAN UNIVERSITY OF SCIENCE ＆ TECHNOLOGY(NATURAL SCIENCE EDITION)., vol. 33, no. 2, 30 June 2018 (2018-06-30), pages 84 - 88, XP055971376, ISSN: 1672-9102
LI QIONGJIU, SHIQUAN,LIAO ZONGFU,ZHOU SHUZHI,SHEN TONGHE: "New Zero-CO2 Emission Coal Gasification Methanol Production Technology", SINO-GLOBAL ENERGY, vol. 14, no. 8, 31 December 2009 (2009-12-31), pages 33 - 40, XP055971379, ISSN: 1673-579X
LI QIONGJIU, SHIQUAN,LIAO ZONGFU,ZHOU SHUZHI,SHEN TONGHE: "New Zero-CO2 Emission Coal Gasification Methanol Production Technology", SINO-GLOBAL ENERGY, vol. 14, no. 8, 31 December 2009 (2009-12-31), pages 33 - 40, XP055971379, ISSN: 1673-579X
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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