Pub Date : 2022-07-19DOI: 10.18412/1816-0387-2022-4-6-21
K. Gryaznov, L. V. Sineva, E. Asalieva, V. Mordkovich
The results of physicochemical comparative study of Fischer – Tropsch industrial cobalt zeolite-containing catalysts are presented. The catalysts are based on heat-conductive additive (aluminum flakes or exfoliated graphite) and were tested in one tube industrial scale reactor (length – 6000 mm, inner diameter – 12 mm). For comparison purposes, the testing results of catalyst without heat-conductive additive are presented. It’s shown that exfoliated graphite-based catalyst is more suitable for industrial scale application in high syngas gas hour space velocities due to higher thermal stability and higher hydrocarbon productivity.
{"title":"Comprehensive comparison of high productivity cobalt catalysts for Fischer – Tropsch synthesis with different types of heat-conductive frames","authors":"K. Gryaznov, L. V. Sineva, E. Asalieva, V. Mordkovich","doi":"10.18412/1816-0387-2022-4-6-21","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-4-6-21","url":null,"abstract":"The results of physicochemical comparative study of Fischer – Tropsch industrial cobalt zeolite-containing catalysts are presented. The catalysts are based on heat-conductive additive (aluminum flakes or exfoliated graphite) and were tested in one tube industrial scale reactor (length – 6000 mm, inner diameter – 12 mm). For comparison purposes, the testing results of catalyst without heat-conductive additive are presented. It’s shown that exfoliated graphite-based catalyst is more suitable for industrial scale application in high syngas gas hour space velocities due to higher thermal stability and higher hydrocarbon productivity.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73035876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-19DOI: 10.18412/1816-0387-2022-4-28-35
A. Gorlova, I. E. Karmadonova, V. S. Derevshchikov, V. Rogozhnikov, P. Snytnikov, D. Potemkin
The sorption-catalytic steam conversion of CO using a mechanical mixture of 5 wt.% Pt/Ce0.75Zr0.25O2 catalyst grains and 10 mol.% NaNO3/MgO sorbent was studied. It was shown under the model conditions that initially MgO adsorbs СО2 only slightly, whereas its promotion with NaNO3 leads to a considerable growth of the adsorption dynamic capacity in the temperature range of 300–350 °С with a maximum at 320 °С. High activity and selectivity of the catalyst in steam conversion of CO were demonstrated for a model mixture with the composition (vol.%) 11.6 CO, 61 H2 and 27.4 H2O: the concentration of СО at the reactor outlet did not exceed 1 vol.% in the temperature range of 220– 400 °С (the minimum value of 0.3 vol.% was observed at 240 °С), and СН4 – at temperatures below 320 °С (0.61 vol.% at this point). The use of the sorbent in a mixture with the catalyst in the sorption-catalytic steam conversion of CO at 320 °С led to a considerable decrease in its sorption capacity; this may be related to the conversion of all NaNO3 into Na2CO3, which decomposed incompletely during regeneration. Nevertheless, this made it possible to decrease twofold the outlet concentrations of СО and СН4 as compared to the values observed at the indicated temperature in the experiment without a sorbent: particularly, in the middle of the first adsorption cycle they were equal to 6.1·10–4 and 8.2·10–2 vol.%, respectively, on a dry gas basis. Thus, the indicated approach to the sorption-catalytic conversion of CO was shown to be promising; further studies are needed to increase the capacity and stability of the presented type of sorbents.
{"title":"Sorption-catalytic steam conversion of CO on a mechanical mixture of Pt/Ce0.75Zr0.25O2 catalyst and NaNO3/MgO sorbent","authors":"A. Gorlova, I. E. Karmadonova, V. S. Derevshchikov, V. Rogozhnikov, P. Snytnikov, D. Potemkin","doi":"10.18412/1816-0387-2022-4-28-35","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-4-28-35","url":null,"abstract":"The sorption-catalytic steam conversion of CO using a mechanical mixture of 5 wt.% Pt/Ce0.75Zr0.25O2 catalyst grains and 10 mol.% NaNO3/MgO sorbent was studied. It was shown under the model conditions that initially MgO adsorbs СО2 only slightly, whereas its promotion with NaNO3 leads to a considerable growth of the adsorption dynamic capacity in the temperature range of 300–350 °С with a maximum at 320 °С. High activity and selectivity of the catalyst in steam conversion of CO were demonstrated for a model mixture with the composition (vol.%) 11.6 CO, 61 H2 and 27.4 H2O: the concentration of СО at the reactor outlet did not exceed 1 vol.% in the temperature range of 220– 400 °С (the minimum value of 0.3 vol.% was observed at 240 °С), and СН4 – at temperatures below 320 °С (0.61 vol.% at this point). The use of the sorbent in a mixture with the catalyst in the sorption-catalytic steam conversion of CO at 320 °С led to a considerable decrease in its sorption capacity; this may be related to the conversion of all NaNO3 into Na2CO3, which decomposed incompletely during regeneration. Nevertheless, this made it possible to decrease twofold the outlet concentrations of СО and СН4 as compared to the values observed at the indicated temperature in the experiment without a sorbent: particularly, in the middle of the first adsorption cycle they were equal to 6.1·10–4 and 8.2·10–2 vol.%, respectively, on a dry gas basis. Thus, the indicated approach to the sorption-catalytic conversion of CO was shown to be promising; further studies are needed to increase the capacity and stability of the presented type of sorbents.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77252834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-19DOI: 10.18412/1816-0387-2022-4-22-27
A. Zagoruiko, S. Lopatin, P. Mikenin, A. Elyshev
The study is dedicated to the performance of glass-fiber catalysts (GFCs) in the practically important reaction of hydrogen oxidation by oxygen in the media of carbon dioxide at elevated pressures. The samples of the catalysts were synthesized using Pt and Pd as active metals and thermostable high-silica glass-fiber textiles both unpromoted and promoted by Zr. The used catalyst preparation methods include surface thermal synthesis and leaching/impregnation approaches. All three tested samples showed approximately equal activity, but the preference was given to Pt-based GFC synthesized by means of surface thermal synthesis method because it uses the much cheaper and widely available glass-fiber textile instead of rare and expensive Zr-promoted materials. Resource testing of this catalyst for more than 200 hours demonstrated its high stability. The reaction rate may be described by kinetic equation corresponding to mass-action law with linear dependence upon the reaction pressure. The studied GFC may be arranged into structured cartridges with low pressure drop and highly intensive heat and mass transfer under the commercial process conditions, so its further practical application looks promising.
{"title":"Experimental investigations and kinetics of hydrogen oxidation by oxygen in the media of carbon dioxide under elevated pressure at fiber-glass Pt/Pd catalysts","authors":"A. Zagoruiko, S. Lopatin, P. Mikenin, A. Elyshev","doi":"10.18412/1816-0387-2022-4-22-27","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-4-22-27","url":null,"abstract":"The study is dedicated to the performance of glass-fiber catalysts (GFCs) in the practically important reaction of hydrogen oxidation by oxygen in the media of carbon dioxide at elevated pressures. The samples of the catalysts were synthesized using Pt and Pd as active metals and thermostable high-silica glass-fiber textiles both unpromoted and promoted by Zr. The used catalyst preparation methods include surface thermal synthesis and leaching/impregnation approaches. All three tested samples showed approximately equal activity, but the preference was given to Pt-based GFC synthesized by means of surface thermal synthesis method because it uses the much cheaper and widely available glass-fiber textile instead of rare and expensive Zr-promoted materials. Resource testing of this catalyst for more than 200 hours demonstrated its high stability. The reaction rate may be described by kinetic equation corresponding to mass-action law with linear dependence upon the reaction pressure. The studied GFC may be arranged into structured cartridges with low pressure drop and highly intensive heat and mass transfer under the commercial process conditions, so its further practical application looks promising.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81150882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-26DOI: 10.18412/1816-0387-2022-3-31-37
L. Kustov, A. L. Tarasov, A. Kustov
Activity and selectivity of alumina-supported palladium catalysts, particularly the sulfurized ones, in the hydrogenation of 1,3-pentadiene to pentenes were investigated. Preliminary sulfurizing of palladium catalysts considerably enhances the selectivity to olefins in a wide range of the H2 /diene molar ratio (from 2.5 to 10). Samples activated in H2 at elevated temperatures demonstrate a higher activity toward diene hydrogenation. Palladium catalysts are more active at low temperatures of the reaction; however, the earlier studied sulfurized Ni catalysts compare well with palladium ones in terms of their selectivity to olefins and productivity, and are more selective in an excess of hydrogen. Modification of palladium with chromium, silver or lithium increases the selectivity to olefins.
{"title":"Hydrogenation of 1,3-pentadiene on modified Pd-containing catalysts","authors":"L. Kustov, A. L. Tarasov, A. Kustov","doi":"10.18412/1816-0387-2022-3-31-37","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-3-31-37","url":null,"abstract":"Activity and selectivity of alumina-supported palladium catalysts, particularly the sulfurized ones, in the hydrogenation of 1,3-pentadiene to pentenes were investigated. Preliminary sulfurizing of palladium catalysts considerably enhances the selectivity to olefins in a wide range of the H2 /diene molar ratio (from 2.5 to 10). Samples activated in H2 at elevated temperatures demonstrate a higher activity toward diene hydrogenation. Palladium catalysts are more active at low temperatures of the reaction; however, the earlier studied sulfurized Ni catalysts compare well with palladium ones in terms of their selectivity to olefins and productivity, and are more selective in an excess of hydrogen. Modification of palladium with chromium, silver or lithium increases the selectivity to olefins.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84302895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-26DOI: 10.18412/1816-0387-2022-3-38-65
S. V. Budukva, D. D. Uvarkina, O. Klimov, A. Noskov
The results of studies on deactivation of hydrotreating catalysts reported in scientific and technical literature are considered and systematized in the review. The effect exerted by the feedstock composition and hydrotreatment conditions on the catalyst coking is revealed. The factorsleading to changes in the morphology of active component and the possibilities to weaken this type of catalyst deactivation during commercial operation are considered. The effect of a pressure drop over the catalyst bed on the run time as well as the action of catalytic poisons and the ways of their penetration into hydrotreatment distillates are shown. This review can be interesting and useful to chemical engineers involved in the study of catalytic systems and to oil industry specialists.
{"title":"Deactivation of hydrotreating catalysts (A review)","authors":"S. V. Budukva, D. D. Uvarkina, O. Klimov, A. Noskov","doi":"10.18412/1816-0387-2022-3-38-65","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-3-38-65","url":null,"abstract":"The results of studies on deactivation of hydrotreating catalysts reported in scientific and technical literature are considered and systematized in the review. The effect exerted by the feedstock composition and hydrotreatment conditions on the catalyst coking is revealed. The factorsleading to changes in the morphology of active component and the possibilities to weaken this type of catalyst deactivation during commercial operation are considered. The effect of a pressure drop over the catalyst bed on the run time as well as the action of catalytic poisons and the ways of their penetration into hydrotreatment distillates are shown. This review can be interesting and useful to chemical engineers involved in the study of catalytic systems and to oil industry specialists.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76927456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-26DOI: 10.18412/1816-0387-2022-3-66-85
K. N. Sorokina, Y. V. Samoylova, V. Parmon
The literature review is devoted to recent studies on the production of microalgae biomass and its processing using chemical and bioengineering approaches into marketable substances: biofuel, ethanol, butanol, hydrogen and others. The review consists of three parts: approaches to the production of microalgae biomass (part 1), the synthesis of biofuel from microalgae (part 2), and the production of marketable substances by bioengineering (part 3). The first part of the review considers the promising strains of microalgae that produce lipids and serve to obtain biofuel complying with ASTM D6751 and EN 14214 standards. Factors affecting the accumulation and composition of microalgae lipids (the composition of nutritional medium, illumination, temperature, and salinity of the medium) are also discussed. Approaches to the production of microalgae biomass, particularly with the use of flue gases and sewage, are analyzed.
{"title":"The use of microalgae biomass for the production of marketable products. Part 1. Approaches to the production of microalgae biomass","authors":"K. N. Sorokina, Y. V. Samoylova, V. Parmon","doi":"10.18412/1816-0387-2022-3-66-85","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-3-66-85","url":null,"abstract":"The literature review is devoted to recent studies on the production of microalgae biomass and its processing using chemical and bioengineering approaches into marketable substances: biofuel, ethanol, butanol, hydrogen and others. The review consists of three parts: approaches to the production of microalgae biomass (part 1), the synthesis of biofuel from microalgae (part 2), and the production of marketable substances by bioengineering (part 3). The first part of the review considers the promising strains of microalgae that produce lipids and serve to obtain biofuel complying with ASTM D6751 and EN 14214 standards. Factors affecting the accumulation and composition of microalgae lipids (the composition of nutritional medium, illumination, temperature, and salinity of the medium) are also discussed. Approaches to the production of microalgae biomass, particularly with the use of flue gases and sewage, are analyzed.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78084458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-26DOI: 10.18412/1816-0387-2022-3-21-30
I. R. Nabiullin, A. Boretskaya, M. V. Berezkina, R. Gilmullin, A. M. Busygina, A. Z. Kurbangaleeva, S. Egorova
The paper describes the production of base monomers by dehydrogenation at PJSC «Nizhnekamskneftekhim». Special emphasis is made on the development of advanced domestic catalysts in cooperation with Kazan Federal University. Drawbacks of the existing catalytic systems and possible variants of their improvement are described.
{"title":"The production of monomers by dehydrogenation at PJSC «Nizhnekamskneftekhim»","authors":"I. R. Nabiullin, A. Boretskaya, M. V. Berezkina, R. Gilmullin, A. M. Busygina, A. Z. Kurbangaleeva, S. Egorova","doi":"10.18412/1816-0387-2022-3-21-30","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-3-21-30","url":null,"abstract":"The paper describes the production of base monomers by dehydrogenation at PJSC «Nizhnekamskneftekhim». Special emphasis is made on the development of advanced domestic catalysts in cooperation with Kazan Federal University. Drawbacks of the existing catalytic systems and possible variants of their improvement are described.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80968217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-26DOI: 10.18412/1816-0387-2022-3-5-20
R. Yakovenko, V. G. Bakun, S. Sulima, G. B. Narochnyi, S. Mitchenko, I. Zubkov, A. Savost’yanov
The review considers modern approaches to the development of a technology for producing cobalt catalysts that are applied in the majority of known processes aimed to synthesize hydrocarbons from СО and Н2 by the Fischer – Tropsch method. The development of efficient catalysts makes it possible to replace the fuel produced from fossil oil by an alternative ultrapure fuel, thus reducing the detrimental effect on the environment. The results of R&D studies, particularly those obtained recently by the authors, were analyzed to reveal topical trends in the development of high-performance catalysts for the synthesis of hydrocarbons by the Fischer – Tropsch method within the classical and integrated GTL technology, including the creation of polyfunctional systems of new types. The review provides information mainly on the catalytic characteristics of the supported cobalt catalysts synthesized by impregnation and the related polyfunctional hybrid catalysts for the selective synthesis of fuel fraction hydrocarbons. The control of selectivity and productivity as well as changes in activity and physicochemical properties of the catalysts during a long-term operation are considered.
{"title":"Supported and polyfunctional hybrid cobalt catalysts for selective Fischer – Tropsch synthesis (A review)","authors":"R. Yakovenko, V. G. Bakun, S. Sulima, G. B. Narochnyi, S. Mitchenko, I. Zubkov, A. Savost’yanov","doi":"10.18412/1816-0387-2022-3-5-20","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-3-5-20","url":null,"abstract":"The review considers modern approaches to the development of a technology for producing cobalt catalysts that are applied in the majority of known processes aimed to synthesize hydrocarbons from СО and Н2 by the Fischer – Tropsch method. The development of efficient catalysts makes it possible to replace the fuel produced from fossil oil by an alternative ultrapure fuel, thus reducing the detrimental effect on the environment. The results of R&D studies, particularly those obtained recently by the authors, were analyzed to reveal topical trends in the development of high-performance catalysts for the synthesis of hydrocarbons by the Fischer – Tropsch method within the classical and integrated GTL technology, including the creation of polyfunctional systems of new types. The review provides information mainly on the catalytic characteristics of the supported cobalt catalysts synthesized by impregnation and the related polyfunctional hybrid catalysts for the selective synthesis of fuel fraction hydrocarbons. The control of selectivity and productivity as well as changes in activity and physicochemical properties of the catalysts during a long-term operation are considered.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88050287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-24DOI: 10.18412/1816-0387-2022-2-5-17
V. E. Tarabanko, M. Smirnova, E. Zhizhina
The literature on the existing processes for the synthesis of γ-acetopropyl alcohol (acetopropanol, 5-hydroxypentan-2-one, APA) is reviewed. This substance is used to produce vitamin B1, antimalarial drugs and polymers. The promising methods for APA production are the hydrogenation-hydration of sylvan (2-methylfuran), hydrogenation of furfural, and syntheses based on allyl acetate, sodium acetoacetic ether, and γ-butyrolactone.
{"title":"Processes for the synthesis of γ-acetopropyl alcohol","authors":"V. E. Tarabanko, M. Smirnova, E. Zhizhina","doi":"10.18412/1816-0387-2022-2-5-17","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-2-5-17","url":null,"abstract":"The literature on the existing processes for the synthesis of γ-acetopropyl alcohol (acetopropanol, 5-hydroxypentan-2-one, APA) is reviewed. This substance is used to produce vitamin B1, antimalarial drugs and polymers. The promising methods for APA production are the hydrogenation-hydration of sylvan (2-methylfuran), hydrogenation of furfural, and syntheses based on allyl acetate, sodium acetoacetic ether, and γ-butyrolactone.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83875588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-24DOI: 10.18412/1816-0387-2022-2-57-64
E. Salakhova, A. V. Dmitriev, V. Zinurov, I. R. Nabiullin, I. Salakhov
The paper considers the problem of collecting solid particles in the production line with dehydrogenation of С4–С5 isoparaffins to isoolefins in a fluidized catalyst bed. The collecting of finely dispersed catalyst particles for dehydrogenation of paraffin hydrocarbons using a standard CN-15 cyclone and a new dust-collecting device (NDD) with arched elements was studied. The results of numerical simulation of CN-15 and NDD are reported. A comparative study revealed that NDD is more efficient than CN-15 in collecting the finely dispersed solid particles with the size below 20 μm. For NDD, determinate variations in the pressure and rate profiles, without any critical deviations, were observed. The gas flow rate through the arched elements of NDD was found to be stable, in distinction to CN-15, where high rates appear at the cyclone edges, thus raising the probability of dust breakthrough into the flow to be purified.
{"title":"A dust-collecting device for dehydrogenation of paraffin hydrocarbons with a fluidized catalyst bed","authors":"E. Salakhova, A. V. Dmitriev, V. Zinurov, I. R. Nabiullin, I. Salakhov","doi":"10.18412/1816-0387-2022-2-57-64","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-2-57-64","url":null,"abstract":"The paper considers the problem of collecting solid particles in the production line with dehydrogenation of С4–С5 isoparaffins to isoolefins in a fluidized catalyst bed. The collecting of finely dispersed catalyst particles for dehydrogenation of paraffin hydrocarbons using a standard CN-15 cyclone and a new dust-collecting device (NDD) with arched elements was studied. The results of numerical simulation of CN-15 and NDD are reported. A comparative study revealed that NDD is more efficient than CN-15 in collecting the finely dispersed solid particles with the size below 20 μm. For NDD, determinate variations in the pressure and rate profiles, without any critical deviations, were observed. The gas flow rate through the arched elements of NDD was found to be stable, in distinction to CN-15, where high rates appear at the cyclone edges, thus raising the probability of dust breakthrough into the flow to be purified.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73005657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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