PARA-XYLENE PRODUCTION PROCESS
A process is described for increasing the efficiency of para-xylene production using a two stage isomerization sequence. In the first stage of the process, a C9 aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C8 aromatics are removed from the effluent, which...
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| creator | JOHNSON, IVY, DAWN BECK, JEFFREY, SCOTT CIMINI, RONALD, JOSEPH LIGURAS, DIMITRIS, KONSTANTINE KWOK, SELMA ABICHANDANI, JEEVAN, SAHIB BROWN, STEPHEN, HAROLD STERN, DAVID, LAWRENCE |
| description | A process is described for increasing the efficiency of para-xylene production using a two stage isomerization sequence. In the first stage of the process, a C9 aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C8 aromatics are removed from the effluent, which is then processed in a second stage of the process to remove para-xylene and isomerize the para-xylene depleted effluent. The effluent from the second stage isomerization unit is then recycled into the inlet of the second stage of the process and a slip stream from the para-xylene separator is recycled to the feedstock and to the effluent of the ethylbenzene conversion unit. In this way, the production of para-xylene is maximized. In a preferred embodiment, toluene is co-fed into the feedstock to minimize the loss of xylenes during the ethylbenzene conversion reaction. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP1109761B1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP1109761B1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP1109761B13</originalsourceid><addsrcrecordid>eNrjZJALcAxy1I2I9HH1c1UICPJ3CXUO8fT3AzGdXYODeRhY0xJzilN5oTQ3g4Kba4izh25qQX58anFBYnJqXmpJvGuAoaGBpbmZoZOhMRFKAIoaIS0</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>PARA-XYLENE PRODUCTION PROCESS</title><source>esp@cenet</source><creator>JOHNSON, IVY, DAWN ; BECK, JEFFREY, SCOTT ; CIMINI, RONALD, JOSEPH ; LIGURAS, DIMITRIS, KONSTANTINE ; KWOK, SELMA ; ABICHANDANI, JEEVAN, SAHIB ; BROWN, STEPHEN, HAROLD ; STERN, DAVID, LAWRENCE</creator><creatorcontrib>JOHNSON, IVY, DAWN ; BECK, JEFFREY, SCOTT ; CIMINI, RONALD, JOSEPH ; LIGURAS, DIMITRIS, KONSTANTINE ; KWOK, SELMA ; ABICHANDANI, JEEVAN, SAHIB ; BROWN, STEPHEN, HAROLD ; STERN, DAVID, LAWRENCE</creatorcontrib><description>A process is described for increasing the efficiency of para-xylene production using a two stage isomerization sequence. In the first stage of the process, a C9<+> aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C8 aromatics are removed from the effluent, which is then processed in a second stage of the process to remove para-xylene and isomerize the para-xylene depleted effluent. The effluent from the second stage isomerization unit is then recycled into the inlet of the second stage of the process and a slip stream from the para-xylene separator is recycled to the feedstock and to the effluent of the ethylbenzene conversion unit. In this way, the production of para-xylene is maximized. In a preferred embodiment, toluene is co-fed into the feedstock to minimize the loss of xylenes during the ethylbenzene conversion reaction.</description><edition>7</edition><language>eng ; fre ; ger</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY</subject><creationdate>2003</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=20030507&DB=EPODOC&CC=EP&NR=1109761B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20030507&DB=EPODOC&CC=EP&NR=1109761B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>JOHNSON, IVY, DAWN</creatorcontrib><creatorcontrib>BECK, JEFFREY, SCOTT</creatorcontrib><creatorcontrib>CIMINI, RONALD, JOSEPH</creatorcontrib><creatorcontrib>LIGURAS, DIMITRIS, KONSTANTINE</creatorcontrib><creatorcontrib>KWOK, SELMA</creatorcontrib><creatorcontrib>ABICHANDANI, JEEVAN, SAHIB</creatorcontrib><creatorcontrib>BROWN, STEPHEN, HAROLD</creatorcontrib><creatorcontrib>STERN, DAVID, LAWRENCE</creatorcontrib><title>PARA-XYLENE PRODUCTION PROCESS</title><description>A process is described for increasing the efficiency of para-xylene production using a two stage isomerization sequence. In the first stage of the process, a C9<+> aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C8 aromatics are removed from the effluent, which is then processed in a second stage of the process to remove para-xylene and isomerize the para-xylene depleted effluent. The effluent from the second stage isomerization unit is then recycled into the inlet of the second stage of the process and a slip stream from the para-xylene separator is recycled to the feedstock and to the effluent of the ethylbenzene conversion unit. In this way, the production of para-xylene is maximized. In a preferred embodiment, toluene is co-fed into the feedstock to minimize the loss of xylenes during the ethylbenzene conversion reaction.</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2003</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJALcAxy1I2I9HH1c1UICPJ3CXUO8fT3AzGdXYODeRhY0xJzilN5oTQ3g4Kba4izh25qQX58anFBYnJqXmpJvGuAoaGBpbmZoZOhMRFKAIoaIS0</recordid><startdate>20030507</startdate><enddate>20030507</enddate><creator>JOHNSON, IVY, DAWN</creator><creator>BECK, JEFFREY, SCOTT</creator><creator>CIMINI, RONALD, JOSEPH</creator><creator>LIGURAS, DIMITRIS, KONSTANTINE</creator><creator>KWOK, SELMA</creator><creator>ABICHANDANI, JEEVAN, SAHIB</creator><creator>BROWN, STEPHEN, HAROLD</creator><creator>STERN, DAVID, LAWRENCE</creator><scope>EVB</scope></search><sort><creationdate>20030507</creationdate><title>PARA-XYLENE PRODUCTION PROCESS</title><author>JOHNSON, IVY, DAWN ; BECK, JEFFREY, SCOTT ; CIMINI, RONALD, JOSEPH ; LIGURAS, DIMITRIS, KONSTANTINE ; KWOK, SELMA ; ABICHANDANI, JEEVAN, SAHIB ; BROWN, STEPHEN, HAROLD ; STERN, DAVID, LAWRENCE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1109761B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2003</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>JOHNSON, IVY, DAWN</creatorcontrib><creatorcontrib>BECK, JEFFREY, SCOTT</creatorcontrib><creatorcontrib>CIMINI, RONALD, JOSEPH</creatorcontrib><creatorcontrib>LIGURAS, DIMITRIS, KONSTANTINE</creatorcontrib><creatorcontrib>KWOK, SELMA</creatorcontrib><creatorcontrib>ABICHANDANI, JEEVAN, SAHIB</creatorcontrib><creatorcontrib>BROWN, STEPHEN, HAROLD</creatorcontrib><creatorcontrib>STERN, DAVID, LAWRENCE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>JOHNSON, IVY, DAWN</au><au>BECK, JEFFREY, SCOTT</au><au>CIMINI, RONALD, JOSEPH</au><au>LIGURAS, DIMITRIS, KONSTANTINE</au><au>KWOK, SELMA</au><au>ABICHANDANI, JEEVAN, SAHIB</au><au>BROWN, STEPHEN, HAROLD</au><au>STERN, DAVID, LAWRENCE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PARA-XYLENE PRODUCTION PROCESS</title><date>2003-05-07</date><risdate>2003</risdate><abstract>A process is described for increasing the efficiency of para-xylene production using a two stage isomerization sequence. In the first stage of the process, a C9<+> aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C8 aromatics are removed from the effluent, which is then processed in a second stage of the process to remove para-xylene and isomerize the para-xylene depleted effluent. The effluent from the second stage isomerization unit is then recycled into the inlet of the second stage of the process and a slip stream from the para-xylene separator is recycled to the feedstock and to the effluent of the ethylbenzene conversion unit. In this way, the production of para-xylene is maximized. In a preferred embodiment, toluene is co-fed into the feedstock to minimize the loss of xylenes during the ethylbenzene conversion reaction.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY |
| title | PARA-XYLENE PRODUCTION PROCESS |
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