Process for preparing liquefied natural gas (LNG) from coal
The invention discloses a process for preparing liquefied natural gas (LNG) from coal. The process is specifically characterized in that only fine desulfurization is needed before methanation of synthetic gas from coal, CO2 still stays in the synthetic gas, CO2 is removed after methanation, and the...
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | YAO HUICHAO CHENG XUEQING MU XIANGYU SHAN TONGWEN GU GONGWEI GAO ZHEN HE YANG XING YUN SONG PENGFEI ZHENG HENG WANG XIULIN HOU JIANGUO ZHANG XINBO YANG KUANHUI TAO PENGWAN |
| description | The invention discloses a process for preparing liquefied natural gas (LNG) from coal. The process is specifically characterized in that only fine desulfurization is needed before methanation of synthetic gas from coal, CO2 still stays in the synthetic gas, CO2 is removed after methanation, and the synthetic gas is liquefied till the CO2 is 50*10 (vol%) to produce the LNG. The methanation process without recycle gas is adopted, and CO2 is removed by combining low-temperature separation with low-temperature methanol washing phase. CO2 is separated at the temperature of -50 to -60 DEG C under the pressure of 2.4-2.6MPa, and liquid pure CO2 obtained at a column reactor is used as a byproduct. Mixed gas of CH4 and CO2 is obtained at the tower top and delivered to a low-temperature methanol washing tower, and CO2 is removed to 50*10 (vol%). By adopting the process, CO2 can be conveniently collected as a byproduct. Meanwhile, the gas quantity of low-temperature methanol washing and the CO2 quantity are reduced. For the conventional coal-made SNG (synthetic natural gas) process, the quantity of recycle gas can be reduced by more than 50% by adopting the process. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_CN104449919A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>CN104449919A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_CN104449919A3</originalsourceid><addsrcrecordid>eNrjZLAOKMpPTi0uVkjLL1IoKEotSCzKzEtXyMksLE1Ny0xNUchLLCktSsxRSE8sVtDw8XPXVEgrys9VSM5PzOFhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfHOfoYGJiYmlpaGlo7GxKgBAFvLLpE</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Process for preparing liquefied natural gas (LNG) from coal</title><source>esp@cenet</source><creator>YAO HUICHAO ; CHENG XUEQING ; MU XIANGYU ; SHAN TONGWEN ; GU GONGWEI ; GAO ZHEN ; HE YANG ; XING YUN ; SONG PENGFEI ; ZHENG HENG ; WANG XIULIN ; HOU JIANGUO ; ZHANG XINBO ; YANG KUANHUI ; TAO PENGWAN</creator><creatorcontrib>YAO HUICHAO ; CHENG XUEQING ; MU XIANGYU ; SHAN TONGWEN ; GU GONGWEI ; GAO ZHEN ; HE YANG ; XING YUN ; SONG PENGFEI ; ZHENG HENG ; WANG XIULIN ; HOU JIANGUO ; ZHANG XINBO ; YANG KUANHUI ; TAO PENGWAN</creatorcontrib><description>The invention discloses a process for preparing liquefied natural gas (LNG) from coal. The process is specifically characterized in that only fine desulfurization is needed before methanation of synthetic gas from coal, CO2 still stays in the synthetic gas, CO2 is removed after methanation, and the synthetic gas is liquefied till the CO2 is 50*10<-6> (vol%) to produce the LNG. The methanation process without recycle gas is adopted, and CO2 is removed by combining low-temperature separation with low-temperature methanol washing phase. CO2 is separated at the temperature of -50 to -60 DEG C under the pressure of 2.4-2.6MPa, and liquid pure CO2 obtained at a column reactor is used as a byproduct. Mixed gas of CH4 and CO2 is obtained at the tower top and delivered to a low-temperature methanol washing tower, and CO2 is removed to 50*10<-6> (vol%). By adopting the process, CO2 can be conveniently collected as a byproduct. Meanwhile, the gas quantity of low-temperature methanol washing and the CO2 quantity are reduced. For the conventional coal-made SNG (synthetic natural gas) process, the quantity of recycle gas can be reduced by more than 50% by adopting the process.</description><language>eng</language><subject>ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL ; CHEMISTRY ; FIRELIGHTERS ; FUELS ; FUELS NOT OTHERWISE PROVIDED FOR ; LIQUEFIED PETROLEUM GAS ; LUBRICANTS ; METALLURGY ; NATURAL GAS ; PEAT ; PETROLEUM, GAS OR COKE INDUSTRIES ; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K ; TECHNICAL GASES CONTAINING CARBON MONOXIDE</subject><creationdate>2015</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150325&DB=EPODOC&CC=CN&NR=104449919A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150325&DB=EPODOC&CC=CN&NR=104449919A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YAO HUICHAO</creatorcontrib><creatorcontrib>CHENG XUEQING</creatorcontrib><creatorcontrib>MU XIANGYU</creatorcontrib><creatorcontrib>SHAN TONGWEN</creatorcontrib><creatorcontrib>GU GONGWEI</creatorcontrib><creatorcontrib>GAO ZHEN</creatorcontrib><creatorcontrib>HE YANG</creatorcontrib><creatorcontrib>XING YUN</creatorcontrib><creatorcontrib>SONG PENGFEI</creatorcontrib><creatorcontrib>ZHENG HENG</creatorcontrib><creatorcontrib>WANG XIULIN</creatorcontrib><creatorcontrib>HOU JIANGUO</creatorcontrib><creatorcontrib>ZHANG XINBO</creatorcontrib><creatorcontrib>YANG KUANHUI</creatorcontrib><creatorcontrib>TAO PENGWAN</creatorcontrib><title>Process for preparing liquefied natural gas (LNG) from coal</title><description>The invention discloses a process for preparing liquefied natural gas (LNG) from coal. The process is specifically characterized in that only fine desulfurization is needed before methanation of synthetic gas from coal, CO2 still stays in the synthetic gas, CO2 is removed after methanation, and the synthetic gas is liquefied till the CO2 is 50*10<-6> (vol%) to produce the LNG. The methanation process without recycle gas is adopted, and CO2 is removed by combining low-temperature separation with low-temperature methanol washing phase. CO2 is separated at the temperature of -50 to -60 DEG C under the pressure of 2.4-2.6MPa, and liquid pure CO2 obtained at a column reactor is used as a byproduct. Mixed gas of CH4 and CO2 is obtained at the tower top and delivered to a low-temperature methanol washing tower, and CO2 is removed to 50*10<-6> (vol%). By adopting the process, CO2 can be conveniently collected as a byproduct. Meanwhile, the gas quantity of low-temperature methanol washing and the CO2 quantity are reduced. For the conventional coal-made SNG (synthetic natural gas) process, the quantity of recycle gas can be reduced by more than 50% by adopting the process.</description><subject>ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL</subject><subject>CHEMISTRY</subject><subject>FIRELIGHTERS</subject><subject>FUELS</subject><subject>FUELS NOT OTHERWISE PROVIDED FOR</subject><subject>LIQUEFIED PETROLEUM GAS</subject><subject>LUBRICANTS</subject><subject>METALLURGY</subject><subject>NATURAL GAS</subject><subject>PEAT</subject><subject>PETROLEUM, GAS OR COKE INDUSTRIES</subject><subject>SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K</subject><subject>TECHNICAL GASES CONTAINING CARBON MONOXIDE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2015</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAOKMpPTi0uVkjLL1IoKEotSCzKzEtXyMksLE1Ny0xNUchLLCktSsxRSE8sVtDw8XPXVEgrys9VSM5PzOFhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfHOfoYGJiYmlpaGlo7GxKgBAFvLLpE</recordid><startdate>20150325</startdate><enddate>20150325</enddate><creator>YAO HUICHAO</creator><creator>CHENG XUEQING</creator><creator>MU XIANGYU</creator><creator>SHAN TONGWEN</creator><creator>GU GONGWEI</creator><creator>GAO ZHEN</creator><creator>HE YANG</creator><creator>XING YUN</creator><creator>SONG PENGFEI</creator><creator>ZHENG HENG</creator><creator>WANG XIULIN</creator><creator>HOU JIANGUO</creator><creator>ZHANG XINBO</creator><creator>YANG KUANHUI</creator><creator>TAO PENGWAN</creator><scope>EVB</scope></search><sort><creationdate>20150325</creationdate><title>Process for preparing liquefied natural gas (LNG) from coal</title><author>YAO HUICHAO ; CHENG XUEQING ; MU XIANGYU ; SHAN TONGWEN ; GU GONGWEI ; GAO ZHEN ; HE YANG ; XING YUN ; SONG PENGFEI ; ZHENG HENG ; WANG XIULIN ; HOU JIANGUO ; ZHANG XINBO ; YANG KUANHUI ; TAO PENGWAN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN104449919A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2015</creationdate><topic>ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL</topic><topic>CHEMISTRY</topic><topic>FIRELIGHTERS</topic><topic>FUELS</topic><topic>FUELS NOT OTHERWISE PROVIDED FOR</topic><topic>LIQUEFIED PETROLEUM GAS</topic><topic>LUBRICANTS</topic><topic>METALLURGY</topic><topic>NATURAL GAS</topic><topic>PEAT</topic><topic>PETROLEUM, GAS OR COKE INDUSTRIES</topic><topic>SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K</topic><topic>TECHNICAL GASES CONTAINING CARBON MONOXIDE</topic><toplevel>online_resources</toplevel><creatorcontrib>YAO HUICHAO</creatorcontrib><creatorcontrib>CHENG XUEQING</creatorcontrib><creatorcontrib>MU XIANGYU</creatorcontrib><creatorcontrib>SHAN TONGWEN</creatorcontrib><creatorcontrib>GU GONGWEI</creatorcontrib><creatorcontrib>GAO ZHEN</creatorcontrib><creatorcontrib>HE YANG</creatorcontrib><creatorcontrib>XING YUN</creatorcontrib><creatorcontrib>SONG PENGFEI</creatorcontrib><creatorcontrib>ZHENG HENG</creatorcontrib><creatorcontrib>WANG XIULIN</creatorcontrib><creatorcontrib>HOU JIANGUO</creatorcontrib><creatorcontrib>ZHANG XINBO</creatorcontrib><creatorcontrib>YANG KUANHUI</creatorcontrib><creatorcontrib>TAO PENGWAN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YAO HUICHAO</au><au>CHENG XUEQING</au><au>MU XIANGYU</au><au>SHAN TONGWEN</au><au>GU GONGWEI</au><au>GAO ZHEN</au><au>HE YANG</au><au>XING YUN</au><au>SONG PENGFEI</au><au>ZHENG HENG</au><au>WANG XIULIN</au><au>HOU JIANGUO</au><au>ZHANG XINBO</au><au>YANG KUANHUI</au><au>TAO PENGWAN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for preparing liquefied natural gas (LNG) from coal</title><date>2015-03-25</date><risdate>2015</risdate><abstract>The invention discloses a process for preparing liquefied natural gas (LNG) from coal. The process is specifically characterized in that only fine desulfurization is needed before methanation of synthetic gas from coal, CO2 still stays in the synthetic gas, CO2 is removed after methanation, and the synthetic gas is liquefied till the CO2 is 50*10<-6> (vol%) to produce the LNG. The methanation process without recycle gas is adopted, and CO2 is removed by combining low-temperature separation with low-temperature methanol washing phase. CO2 is separated at the temperature of -50 to -60 DEG C under the pressure of 2.4-2.6MPa, and liquid pure CO2 obtained at a column reactor is used as a byproduct. Mixed gas of CH4 and CO2 is obtained at the tower top and delivered to a low-temperature methanol washing tower, and CO2 is removed to 50*10<-6> (vol%). By adopting the process, CO2 can be conveniently collected as a byproduct. Meanwhile, the gas quantity of low-temperature methanol washing and the CO2 quantity are reduced. For the conventional coal-made SNG (synthetic natural gas) process, the quantity of recycle gas can be reduced by more than 50% by adopting the process.</abstract><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_epo_espacenet_CN104449919A |
| source | esp@cenet |
| subjects | ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS PEAT PETROLEUM, GAS OR COKE INDUSTRIES SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE |
| title | Process for preparing liquefied natural gas (LNG) from coal |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-05T17%3A29%3A46IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=YAO%20HUICHAO&rft.date=2015-03-25&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3ECN104449919A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |