Continuous preparation method of N-methyl pyrrolidone
The invention provides a continuous preparation method of N-methyl pyrrolidone. The method comprises the following steps: taking gamma-butyrolactone (GBL) and a methylamine (MMA) aqueous solution as raw materials, making reaction through microchannel reaction equipment under the conditions that the...
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| creator | WANG CONG CUI YANJIE FENG CHUANMI CUI ZHIGUO SHI WENTAO LIU XINWEI |
| description | The invention provides a continuous preparation method of N-methyl pyrrolidone. The method comprises the following steps: taking gamma-butyrolactone (GBL) and a methylamine (MMA) aqueous solution as raw materials, making reaction through microchannel reaction equipment under the conditions that the temperature is 380-430 DEG C and the pressure is 11-20 Mpa to generate an N-methyl pyrrolidone reaction solution, and then rectifying and separating the reaction solution to obtain a pure product of N-methyl pyrrolidone. According to the continuous preparation method of the N-methyl pyrrolidone, the retention time in the synthesis process is 1-3 min, the conversion rate of gamma-butyrolactone is greater than 99.95%, and the product selectivity is 99.9% or above. The process method has the advantages of continuous production, high product yield, high production efficiency and the like.
本发明提供了一种N-甲基吡咯烷酮的连续制备方法，该方法以γ-丁内酯(GBL)和甲胺(MMA)水溶液为原料在380-430℃温度和11-20Mpa压力条件下，通过微通道反应设备进行反应生成N-甲基吡咯烷酮反应液，然后反应液经精馏分离得到N-甲基吡咯烷酮纯品。本发明所 |
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本发明提供了一种N-甲基吡咯烷酮的连续制备方法，该方法以γ-丁内酯(GBL)和甲胺(MMA)水溶液为原料在380-430℃温度和11-20Mpa压力条件下，通过微通道反应设备进行反应生成N-甲基吡咯烷酮反应液，然后反应液经精馏分离得到N-甲基吡咯烷酮纯品。本发明所</description><language>chi ; eng</language><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; HETEROCYCLIC COMPOUNDS ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2022</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=20220128&DB=EPODOC&CC=CN&NR=113979910A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220128&DB=EPODOC&CC=CN&NR=113979910A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG CONG</creatorcontrib><creatorcontrib>CUI YANJIE</creatorcontrib><creatorcontrib>FENG CHUANMI</creatorcontrib><creatorcontrib>CUI ZHIGUO</creatorcontrib><creatorcontrib>SHI WENTAO</creatorcontrib><creatorcontrib>LIU XINWEI</creatorcontrib><title>Continuous preparation method of N-methyl pyrrolidone</title><description>The invention provides a continuous preparation method of N-methyl pyrrolidone. The method comprises the following steps: taking gamma-butyrolactone (GBL) and a methylamine (MMA) aqueous solution as raw materials, making reaction through microchannel reaction equipment under the conditions that the temperature is 380-430 DEG C and the pressure is 11-20 Mpa to generate an N-methyl pyrrolidone reaction solution, and then rectifying and separating the reaction solution to obtain a pure product of N-methyl pyrrolidone. According to the continuous preparation method of the N-methyl pyrrolidone, the retention time in the synthesis process is 1-3 min, the conversion rate of gamma-butyrolactone is greater than 99.95%, and the product selectivity is 99.9% or above. The process method has the advantages of continuous production, high product yield, high production efficiency and the like.
本发明提供了一种N-甲基吡咯烷酮的连续制备方法，该方法以γ-丁内酯(GBL)和甲胺(MMA)水溶液为原料在380-430℃温度和11-20Mpa压力条件下，通过微通道反应设备进行反应生成N-甲基吡咯烷酮反应液，然后反应液经精馏分离得到N-甲基吡咯烷酮纯品。本发明所</description><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>CHEMISTRY</subject><subject>HETEROCYCLIC COMPOUNDS</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDB1zs8rycwrzS8tVigoSi1ILEosyczPU8hNLcnIT1HIT1Pw0wWxK3MUCiqLivJzMlPy81J5GFjTEnOKU3mhNDeDoptriLOHbmpBfnxqcUFicmpeakm8s5-hobGluaWloYGjMTFqAKmYLcM</recordid><startdate>20220128</startdate><enddate>20220128</enddate><creator>WANG CONG</creator><creator>CUI YANJIE</creator><creator>FENG CHUANMI</creator><creator>CUI ZHIGUO</creator><creator>SHI WENTAO</creator><creator>LIU XINWEI</creator><scope>EVB</scope></search><sort><creationdate>20220128</creationdate><title>Continuous preparation method of N-methyl pyrrolidone</title><author>WANG CONG ; CUI YANJIE ; FENG CHUANMI ; CUI ZHIGUO ; SHI WENTAO ; LIU XINWEI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN113979910A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2022</creationdate><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>CHEMISTRY</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>WANG CONG</creatorcontrib><creatorcontrib>CUI YANJIE</creatorcontrib><creatorcontrib>FENG CHUANMI</creatorcontrib><creatorcontrib>CUI ZHIGUO</creatorcontrib><creatorcontrib>SHI WENTAO</creatorcontrib><creatorcontrib>LIU XINWEI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WANG CONG</au><au>CUI YANJIE</au><au>FENG CHUANMI</au><au>CUI ZHIGUO</au><au>SHI WENTAO</au><au>LIU XINWEI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Continuous preparation method of N-methyl pyrrolidone</title><date>2022-01-28</date><risdate>2022</risdate><abstract>The invention provides a continuous preparation method of N-methyl pyrrolidone. The method comprises the following steps: taking gamma-butyrolactone (GBL) and a methylamine (MMA) aqueous solution as raw materials, making reaction through microchannel reaction equipment under the conditions that the temperature is 380-430 DEG C and the pressure is 11-20 Mpa to generate an N-methyl pyrrolidone reaction solution, and then rectifying and separating the reaction solution to obtain a pure product of N-methyl pyrrolidone. According to the continuous preparation method of the N-methyl pyrrolidone, the retention time in the synthesis process is 1-3 min, the conversion rate of gamma-butyrolactone is greater than 99.95%, and the product selectivity is 99.9% or above. The process method has the advantages of continuous production, high product yield, high production efficiency and the like.
本发明提供了一种N-甲基吡咯烷酮的连续制备方法，该方法以γ-丁内酯(GBL)和甲胺(MMA)水溶液为原料在380-430℃温度和11-20Mpa压力条件下，通过微通道反应设备进行反应生成N-甲基吡咯烷酮反应液，然后反应液经精馏分离得到N-甲基吡咯烷酮纯品。本发明所</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING |
| title | Continuous preparation method of N-methyl pyrrolidone |
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