Hydrodynamics of the reactor section in fluid cokers
The hydrodynamics of fluid cokers were studied in a pressurized fully cylindrical cold model scaled by matching key dimensionless groups so that the reactor sections of the commercial and laboratory units were geometrically and dynamically similar. Voidage distributions and solids flow structure wer...
Gespeichert in:
| Veröffentlicht in: | Powder technology 2004-10, Vol.147 (1), p.126-136 |
|---|---|
| Hauptverfasser: | , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 136 |
|---|---|
| container_issue | 1 |
| container_start_page | 126 |
| container_title | Powder technology |
| container_volume | 147 |
| creator | Song, Xuqi Bi, Hsiaotao Jim Lim, C. Grace, John R. Chan, Edward Knapper, Brian McKnight, Craig |
| description | The hydrodynamics of fluid cokers were studied in a pressurized fully cylindrical cold model scaled by matching key dimensionless groups so that the reactor sections of the commercial and laboratory units were geometrically and dynamically similar. Voidage distributions and solids flow structure were investigated using optical fibre probes in a fluidized bed of FCC. The results show a relatively dense annular region, in which the time-average flow is downwards, surrounding a more dilute, upward flowing core region. However, the radial profiles of voidage indicate that the voidage increases gradually from the wall to the axis of the column, rather than showing a sharp transition between an annular and core region. Particles in the descending outer region are entrained by the feed jets into the core region. The radial position of the boundary between upward and downward net solids flow did not change significantly when the superficial gas velocity was varied. |
| doi_str_mv | 10.1016/j.powtec.2004.09.033 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_28212583</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0032591004003870</els_id><sourcerecordid>28212583</sourcerecordid><originalsourceid>FETCH-LOGICAL-c365t-801907a1d21b15773ceba931796e4285ea2078bf9d2de0dbb5a05bc68c342ff3</originalsourceid><addsrcrecordid>eNp9kD1PwzAURS0EEuXjHzBkgS3h2Y6TeEFCFVCkSiwd2CzHfhYuaVzsFNR_T6pUYmN6y7n36h1CbigUFGh1vy624WdAUzCAsgBZAOcnZEabmuecNe-nZAbAWS4khXNykdIaACpOYUbKxd7GYPe93niTsuCy4QOziNoMIWYJzeBDn_k-c93O28yET4zpipw53SW8Pt5Lsnp-Ws0X-fLt5XX-uMwNr8SQN0Al1JpaRlsq6pobbLXktJYVlqwRqBnUTeukZRbBtq3QIFpTNYaXzDl-Se6m2m0MXztMg9r4ZLDrdI9hlxRrGGWi4SNYTqCJIaWITm2j3-i4VxTUwZBaq8mQOhhSINVoaIzdHvt1MrpzUffGp79sVYOQnI3cw8Th-Ou3x6iS8dgbtD6OgpQN_v-hXy76faA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>28212583</pqid></control><display><type>article</type><title>Hydrodynamics of the reactor section in fluid cokers</title><source>Access via ScienceDirect (Elsevier)</source><creator>Song, Xuqi ; Bi, Hsiaotao ; Jim Lim, C. ; Grace, John R. ; Chan, Edward ; Knapper, Brian ; McKnight, Craig</creator><creatorcontrib>Song, Xuqi ; Bi, Hsiaotao ; Jim Lim, C. ; Grace, John R. ; Chan, Edward ; Knapper, Brian ; McKnight, Craig</creatorcontrib><description>The hydrodynamics of fluid cokers were studied in a pressurized fully cylindrical cold model scaled by matching key dimensionless groups so that the reactor sections of the commercial and laboratory units were geometrically and dynamically similar. Voidage distributions and solids flow structure were investigated using optical fibre probes in a fluidized bed of FCC. The results show a relatively dense annular region, in which the time-average flow is downwards, surrounding a more dilute, upward flowing core region. However, the radial profiles of voidage indicate that the voidage increases gradually from the wall to the axis of the column, rather than showing a sharp transition between an annular and core region. Particles in the descending outer region are entrained by the feed jets into the core region. The radial position of the boundary between upward and downward net solids flow did not change significantly when the superficial gas velocity was varied.</description><identifier>ISSN: 0032-5910</identifier><identifier>EISSN: 1873-328X</identifier><identifier>DOI: 10.1016/j.powtec.2004.09.033</identifier><identifier>CODEN: POTEBX</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Applied sciences ; Chemical engineering ; Exact sciences and technology ; Fluid coker ; Fluidization ; Hydrodynamics ; Hydrodynamics of contact apparatus ; Miscellaneous ; Reactors ; Solid-solid systems ; Voidage</subject><ispartof>Powder technology, 2004-10, Vol.147 (1), p.126-136</ispartof><rights>2004 Elsevier B.V.</rights><rights>2005 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c365t-801907a1d21b15773ceba931796e4285ea2078bf9d2de0dbb5a05bc68c342ff3</citedby><cites>FETCH-LOGICAL-c365t-801907a1d21b15773ceba931796e4285ea2078bf9d2de0dbb5a05bc68c342ff3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.powtec.2004.09.033$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16705932$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Song, Xuqi</creatorcontrib><creatorcontrib>Bi, Hsiaotao</creatorcontrib><creatorcontrib>Jim Lim, C.</creatorcontrib><creatorcontrib>Grace, John R.</creatorcontrib><creatorcontrib>Chan, Edward</creatorcontrib><creatorcontrib>Knapper, Brian</creatorcontrib><creatorcontrib>McKnight, Craig</creatorcontrib><title>Hydrodynamics of the reactor section in fluid cokers</title><title>Powder technology</title><description>The hydrodynamics of fluid cokers were studied in a pressurized fully cylindrical cold model scaled by matching key dimensionless groups so that the reactor sections of the commercial and laboratory units were geometrically and dynamically similar. Voidage distributions and solids flow structure were investigated using optical fibre probes in a fluidized bed of FCC. The results show a relatively dense annular region, in which the time-average flow is downwards, surrounding a more dilute, upward flowing core region. However, the radial profiles of voidage indicate that the voidage increases gradually from the wall to the axis of the column, rather than showing a sharp transition between an annular and core region. Particles in the descending outer region are entrained by the feed jets into the core region. The radial position of the boundary between upward and downward net solids flow did not change significantly when the superficial gas velocity was varied.</description><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Exact sciences and technology</subject><subject>Fluid coker</subject><subject>Fluidization</subject><subject>Hydrodynamics</subject><subject>Hydrodynamics of contact apparatus</subject><subject>Miscellaneous</subject><subject>Reactors</subject><subject>Solid-solid systems</subject><subject>Voidage</subject><issn>0032-5910</issn><issn>1873-328X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAURS0EEuXjHzBkgS3h2Y6TeEFCFVCkSiwd2CzHfhYuaVzsFNR_T6pUYmN6y7n36h1CbigUFGh1vy624WdAUzCAsgBZAOcnZEabmuecNe-nZAbAWS4khXNykdIaACpOYUbKxd7GYPe93niTsuCy4QOziNoMIWYJzeBDn_k-c93O28yET4zpipw53SW8Pt5Lsnp-Ws0X-fLt5XX-uMwNr8SQN0Al1JpaRlsq6pobbLXktJYVlqwRqBnUTeukZRbBtq3QIFpTNYaXzDl-Se6m2m0MXztMg9r4ZLDrdI9hlxRrGGWi4SNYTqCJIaWITm2j3-i4VxTUwZBaq8mQOhhSINVoaIzdHvt1MrpzUffGp79sVYOQnI3cw8Th-Ou3x6iS8dgbtD6OgpQN_v-hXy76faA</recordid><startdate>20041011</startdate><enddate>20041011</enddate><creator>Song, Xuqi</creator><creator>Bi, Hsiaotao</creator><creator>Jim Lim, C.</creator><creator>Grace, John R.</creator><creator>Chan, Edward</creator><creator>Knapper, Brian</creator><creator>McKnight, Craig</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>L7M</scope></search><sort><creationdate>20041011</creationdate><title>Hydrodynamics of the reactor section in fluid cokers</title><author>Song, Xuqi ; Bi, Hsiaotao ; Jim Lim, C. ; Grace, John R. ; Chan, Edward ; Knapper, Brian ; McKnight, Craig</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c365t-801907a1d21b15773ceba931796e4285ea2078bf9d2de0dbb5a05bc68c342ff3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Exact sciences and technology</topic><topic>Fluid coker</topic><topic>Fluidization</topic><topic>Hydrodynamics</topic><topic>Hydrodynamics of contact apparatus</topic><topic>Miscellaneous</topic><topic>Reactors</topic><topic>Solid-solid systems</topic><topic>Voidage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Song, Xuqi</creatorcontrib><creatorcontrib>Bi, Hsiaotao</creatorcontrib><creatorcontrib>Jim Lim, C.</creatorcontrib><creatorcontrib>Grace, John R.</creatorcontrib><creatorcontrib>Chan, Edward</creatorcontrib><creatorcontrib>Knapper, Brian</creatorcontrib><creatorcontrib>McKnight, Craig</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Powder technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Song, Xuqi</au><au>Bi, Hsiaotao</au><au>Jim Lim, C.</au><au>Grace, John R.</au><au>Chan, Edward</au><au>Knapper, Brian</au><au>McKnight, Craig</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydrodynamics of the reactor section in fluid cokers</atitle><jtitle>Powder technology</jtitle><date>2004-10-11</date><risdate>2004</risdate><volume>147</volume><issue>1</issue><spage>126</spage><epage>136</epage><pages>126-136</pages><issn>0032-5910</issn><eissn>1873-328X</eissn><coden>POTEBX</coden><abstract>The hydrodynamics of fluid cokers were studied in a pressurized fully cylindrical cold model scaled by matching key dimensionless groups so that the reactor sections of the commercial and laboratory units were geometrically and dynamically similar. Voidage distributions and solids flow structure were investigated using optical fibre probes in a fluidized bed of FCC. The results show a relatively dense annular region, in which the time-average flow is downwards, surrounding a more dilute, upward flowing core region. However, the radial profiles of voidage indicate that the voidage increases gradually from the wall to the axis of the column, rather than showing a sharp transition between an annular and core region. Particles in the descending outer region are entrained by the feed jets into the core region. The radial position of the boundary between upward and downward net solids flow did not change significantly when the superficial gas velocity was varied.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.powtec.2004.09.033</doi><tpages>11</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0032-5910 |
| ispartof | Powder technology, 2004-10, Vol.147 (1), p.126-136 |
| issn | 0032-5910 1873-328X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_28212583 |
| source | Access via ScienceDirect (Elsevier) |
| subjects | Applied sciences Chemical engineering Exact sciences and technology Fluid coker Fluidization Hydrodynamics Hydrodynamics of contact apparatus Miscellaneous Reactors Solid-solid systems Voidage |
| title | Hydrodynamics of the reactor section in fluid cokers |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T17%3A40%3A20IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Hydrodynamics%20of%20the%20reactor%20section%20in%20fluid%20cokers&rft.jtitle=Powder%20technology&rft.au=Song,%20Xuqi&rft.date=2004-10-11&rft.volume=147&rft.issue=1&rft.spage=126&rft.epage=136&rft.pages=126-136&rft.issn=0032-5910&rft.eissn=1873-328X&rft.coden=POTEBX&rft_id=info:doi/10.1016/j.powtec.2004.09.033&rft_dat=%3Cproquest_cross%3E28212583%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=28212583&rft_id=info:pmid/&rft_els_id=S0032591004003870&rfr_iscdi=true |