Modeling of vaporization and cracking of liquid oil injected in a gas-solid riser
Identifieur interne : 001470 ( Main/Exploration ); précédent : 001469; suivant : 001471Modeling of vaporization and cracking of liquid oil injected in a gas-solid riser
Auteurs : Subramanya V. Nayak [Inde] ; Saket L. Joshi [Inde] ; Vivek V. Ranade [Inde]Source :
- Chemical engineering science [ 0009-2509 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Modélisation, Vaporisation, Fissuration, Gaz solide, Colonne montante, Craquage catalytique fluide, Réacteur, Evaporation, Goutte, Transfert chaleur, Particule solide, Gouttelette, Collision, Chaleur massique, Capacité calorifique, Equation Euler, Mécanique fluide numérique, Cinétique, Algorithme, Catalyseur, Point ébullition, Conception, Condition opératoire, Craquage thermique, Optimisation, Prise décision.
English descriptors
- KwdEn :
- Algorithm, Boiling point, Catalyst, Collision, Computational fluid dynamics, Cracking, Decision making, Design, Drop, Droplet, Euler equation, Evaporation, Fluid catalytic cracking, Gas solid, Heat capacity, Heat transfer, Kinetics, Modeling, Operating conditions, Optimization, Reactor, Riser, Solid particle, Specific heat, Thermal cracking, Vaporization.
Abstract
Vaporization and cracking of liquid oil injected in a gas-solid riser (fluid catalytic cracking riser reactor) was computationally studied in this work. Evaporation of a single drop injected in a stream of gas-solid mixture was analyzed first. A model for simulating evaporation of a drop considering heat transfer from the gas phase as well as from the solid particles was developed. The model relates the evaporation rate of droplet with rate of collisions of solid particles, specific heat capacities of solid and liquid, latent heat of vaporization, relative velocity of gas and liquid and temperatures of three phases. The understanding gained from such a model was then extended to simulate evaporation of liquid drops injected in FCC risers. The Eulerian-Lagrangian approach was used to simulate simultaneous evaporation and cracking reactions occurring in FCC riser reactors. A commercial CFD code, FLUENT (of Fluent Inc., USA) was used. Four and ten lump models were used for simulating cracking reactions. Appropriate user defined functions were developed to implement heterogeneous kinetics and heat transfer models in FLUENT. A special algorithm was developed to calculate accumulated coke on catalyst particles. A boiling point range was considered for simulating realistic oil feedstock. The model was first evaluated by comparing predicted results with published industrial data. The simulations were then carried out to understand influence of key design and operating parameters on performance of FCC riser reactors. The parameters studied included; initial oil droplet distribution, catalyst inlet temperature, catalyst to oil ratio and thermal cracking. The approach, model and results presented here would be useful for optimization of FCC operation, cost to benefit analysis of new FCC nozzles and related decision-making.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000590
- to stream PascalFrancis, to step Curation: 000521
- to stream PascalFrancis, to step Checkpoint: 000567
- to stream Main, to step Merge: 001703
- to stream Main, to step Curation: 001470
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Modeling of vaporization and cracking of liquid oil injected in a gas-solid riser</title><author><name sortKey="Nayak, Subramanya V" sort="Nayak, Subramanya V" uniqKey="Nayak S" first="Subramanya V." last="Nayak">Subramanya V. Nayak</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Industrial Flow Modeling Group, National Chemical Laboratory</s1><s2>Pune 411008</s2><s3>IND</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Pune 411008</wicri:noRegion></affiliation></author><author><name sortKey="Joshi, Saket L" sort="Joshi, Saket L" uniqKey="Joshi S" first="Saket L." last="Joshi">Saket L. Joshi</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Industrial Flow Modeling Group, National Chemical Laboratory</s1><s2>Pune 411008</s2><s3>IND</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Pune 411008</wicri:noRegion></affiliation></author><author><name sortKey="Ranade, Vivek V" sort="Ranade, Vivek V" uniqKey="Ranade V" first="Vivek V." last="Ranade">Vivek V. Ranade</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Industrial Flow Modeling Group, National Chemical Laboratory</s1><s2>Pune 411008</s2><s3>IND</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Pune 411008</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">05-0361169</idno><date when="2005">2005</date><idno type="stanalyst">PASCAL 05-0361169 INIST</idno><idno type="RBID">Pascal:05-0361169</idno><idno type="wicri:Area/PascalFrancis/Corpus">000590</idno><idno type="wicri:Area/PascalFrancis/Curation">000521</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000567</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000567</idno><idno type="wicri:doubleKey">0009-2509:2005:Nayak S:modeling:of:vaporization</idno><idno type="wicri:Area/Main/Merge">001703</idno><idno type="wicri:Area/Main/Curation">001470</idno><idno type="wicri:Area/Main/Exploration">001470</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Modeling of vaporization and cracking of liquid oil injected in a gas-solid riser</title><author><name sortKey="Nayak, Subramanya V" sort="Nayak, Subramanya V" uniqKey="Nayak S" first="Subramanya V." last="Nayak">Subramanya V. Nayak</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Industrial Flow Modeling Group, National Chemical Laboratory</s1><s2>Pune 411008</s2><s3>IND</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Pune 411008</wicri:noRegion></affiliation></author><author><name sortKey="Joshi, Saket L" sort="Joshi, Saket L" uniqKey="Joshi S" first="Saket L." last="Joshi">Saket L. Joshi</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Industrial Flow Modeling Group, National Chemical Laboratory</s1><s2>Pune 411008</s2><s3>IND</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Pune 411008</wicri:noRegion></affiliation></author><author><name sortKey="Ranade, Vivek V" sort="Ranade, Vivek V" uniqKey="Ranade V" first="Vivek V." last="Ranade">Vivek V. Ranade</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Industrial Flow Modeling Group, National Chemical Laboratory</s1><s2>Pune 411008</s2><s3>IND</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Pune 411008</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Chemical engineering science</title><title level="j" type="abbreviated">Chem. eng. sci.</title><idno type="ISSN">0009-2509</idno><imprint><date when="2005">2005</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Chemical engineering science</title><title level="j" type="abbreviated">Chem. eng. sci.</title><idno type="ISSN">0009-2509</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Algorithm</term><term>Boiling point</term><term>Catalyst</term><term>Collision</term><term>Computational fluid dynamics</term><term>Cracking</term><term>Decision making</term><term>Design</term><term>Drop</term><term>Droplet</term><term>Euler equation</term><term>Evaporation</term><term>Fluid catalytic cracking</term><term>Gas solid</term><term>Heat capacity</term><term>Heat transfer</term><term>Kinetics</term><term>Modeling</term><term>Operating conditions</term><term>Optimization</term><term>Reactor</term><term>Riser</term><term>Solid particle</term><term>Specific heat</term><term>Thermal cracking</term><term>Vaporization</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Modélisation</term><term>Vaporisation</term><term>Fissuration</term><term>Gaz solide</term><term>Colonne montante</term><term>Craquage catalytique fluide</term><term>Réacteur</term><term>Evaporation</term><term>Goutte</term><term>Transfert chaleur</term><term>Particule solide</term><term>Gouttelette</term><term>Collision</term><term>Chaleur massique</term><term>Capacité calorifique</term><term>Equation Euler</term><term>Mécanique fluide numérique</term><term>Cinétique</term><term>Algorithme</term><term>Catalyseur</term><term>Point ébullition</term><term>Conception</term><term>Condition opératoire</term><term>Craquage thermique</term><term>Optimisation</term><term>Prise décision</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Vaporization and cracking of liquid oil injected in a gas-solid riser (fluid catalytic cracking riser reactor) was computationally studied in this work. Evaporation of a single drop injected in a stream of gas-solid mixture was analyzed first. A model for simulating evaporation of a drop considering heat transfer from the gas phase as well as from the solid particles was developed. The model relates the evaporation rate of droplet with rate of collisions of solid particles, specific heat capacities of solid and liquid, latent heat of vaporization, relative velocity of gas and liquid and temperatures of three phases. The understanding gained from such a model was then extended to simulate evaporation of liquid drops injected in FCC risers. The Eulerian-Lagrangian approach was used to simulate simultaneous evaporation and cracking reactions occurring in FCC riser reactors. A commercial CFD code, FLUENT (of Fluent Inc., USA) was used. Four and ten lump models were used for simulating cracking reactions. Appropriate user defined functions were developed to implement heterogeneous kinetics and heat transfer models in FLUENT. A special algorithm was developed to calculate accumulated coke on catalyst particles. A boiling point range was considered for simulating realistic oil feedstock. The model was first evaluated by comparing predicted results with published industrial data. The simulations were then carried out to understand influence of key design and operating parameters on performance of FCC riser reactors. The parameters studied included; initial oil droplet distribution, catalyst inlet temperature, catalyst to oil ratio and thermal cracking. The approach, model and results presented here would be useful for optimization of FCC operation, cost to benefit analysis of new FCC nozzles and related decision-making.</div></front></TEI><affiliations><list><country><li>Inde</li></country></list><tree><country name="Inde"><noRegion><name sortKey="Nayak, Subramanya V" sort="Nayak, Subramanya V" uniqKey="Nayak S" first="Subramanya V." last="Nayak">Subramanya V. Nayak</name></noRegion><name sortKey="Joshi, Saket L" sort="Joshi, Saket L" uniqKey="Joshi S" first="Saket L." last="Joshi">Saket L. Joshi</name><name sortKey="Ranade, Vivek V" sort="Ranade, Vivek V" uniqKey="Ranade V" first="Vivek V." last="Ranade">Vivek V. Ranade</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Lorraine/explor/LrgpV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001470 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 001470 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Lorraine
|area= LrgpV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= Pascal:05-0361169
|texte= Modeling of vaporization and cracking of liquid oil injected in a gas-solid riser
}}
| This area was generated with Dilib version V0.6.32. |  |