The Experts below are selected from a list of 60654 Experts worldwide ranked by ideXlab platform
Guy Marin - One of the best experts on this subject based on the ideXlab platform.
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coking resistance of specialized coil Materials during steam cracking of sulfur free naphtha
Industrial & Engineering Chemistry Research, 2014Co-Authors: Andres Munoz E Gandarillas, Marie-françoise Reyniers, Guy MarinAbstract:The Reactor Material strongly affects coke formation during steam cracking of hydrocarbons. Therefore, in the past decade several specialized Reactor Materials have been developed that have proven to be efficient in reducing coke formation for ethane steam cracking. However, their beneficial anticoking properties are questioned when heavier feedstocks such as naphtha are cracked. Therefore, the effect of the composition of the Reactor Material has been investigated for ethane and naphtha cracking in an electrobalance setup under industrially relevant conditions. A significant reduction of coke formation is obtained for specialized alloys compared to typical Fe–Cr–Ni heat resistant steels when a sulfur-free naphtha is cracked. A thin layer of alumina on the surface along with manganese chromite provides the highest resistance to coking, as was demonstrated by the SEM and EDX analyses. The decrease in coking rate translates in a run length increase of 50% for a typical naphtha furnace equipped with Reactors...
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influence of the Reactor Material composition on coke formation during ethane steam cracking
Industrial & Engineering Chemistry Research, 2014Co-Authors: Andres Munoz E Gandarillas, Marie-françoise Reyniers, Kevin Van Geem, Guy MarinAbstract:An experimental study of the coking tendency of nine different Materials was carried out in a quartz electrobalance setup with a jet stirred Reactor (JSR) under industrially relevant ethane steam cracking conditions: TMaterial = 1159 K, Ptot = 0.1 MPa, χethane = 73%, dilution δ = 0.33 kgH2O/kgHC. A strong influence of the composition of the Materials on the coking rate as a function of time on-stream was observed. The initial coking rate varied from 5 × 10–4 g·m–2·s–1 to 27 × 10–4 g·m–2·s–1, while the asymptotic coking rate changed in the range of 2 × 10–4 g·m–2·s–1 to 6 × 10–4 g·m–2·s–1. SEM and EDX analyses of coked and uncoked coupons revealed that the composition of the oxide layer in contact with the cracked gas, formed after the initial preoxidation or decoking, has an important influence on the amount of coke deposited. Materials that formed a thin Al2O3 layer on the coupon surface showed a higher coking resistance. A uniform surface composition and a high resistance to spalling and fractures are o...
Marie-françoise Reyniers - One of the best experts on this subject based on the ideXlab platform.
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catalytic effect of dimethyl disulfide on coke formation on high temperature alloys myth or reality
Industrial & Engineering Chemistry Research, 2020Co-Authors: Manjunath Patil, Marie-françoise Reyniers, Stamatis A Sarris, Kim Verbeken, Kevin Van GeemAbstract:The selection of the Reactor Material with the lowest coking tendency can result in substantial economic benefits for the steam cracking process. One of the remaining unresolved points of discussio...
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coking resistance of specialized coil Materials during steam cracking of sulfur free naphtha
Industrial & Engineering Chemistry Research, 2014Co-Authors: Andres Munoz E Gandarillas, Marie-françoise Reyniers, Guy MarinAbstract:The Reactor Material strongly affects coke formation during steam cracking of hydrocarbons. Therefore, in the past decade several specialized Reactor Materials have been developed that have proven to be efficient in reducing coke formation for ethane steam cracking. However, their beneficial anticoking properties are questioned when heavier feedstocks such as naphtha are cracked. Therefore, the effect of the composition of the Reactor Material has been investigated for ethane and naphtha cracking in an electrobalance setup under industrially relevant conditions. A significant reduction of coke formation is obtained for specialized alloys compared to typical Fe–Cr–Ni heat resistant steels when a sulfur-free naphtha is cracked. A thin layer of alumina on the surface along with manganese chromite provides the highest resistance to coking, as was demonstrated by the SEM and EDX analyses. The decrease in coking rate translates in a run length increase of 50% for a typical naphtha furnace equipped with Reactors...
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influence of the Reactor Material composition on coke formation during ethane steam cracking
Industrial & Engineering Chemistry Research, 2014Co-Authors: Andres Munoz E Gandarillas, Marie-françoise Reyniers, Kevin Van Geem, Guy MarinAbstract:An experimental study of the coking tendency of nine different Materials was carried out in a quartz electrobalance setup with a jet stirred Reactor (JSR) under industrially relevant ethane steam cracking conditions: TMaterial = 1159 K, Ptot = 0.1 MPa, χethane = 73%, dilution δ = 0.33 kgH2O/kgHC. A strong influence of the composition of the Materials on the coking rate as a function of time on-stream was observed. The initial coking rate varied from 5 × 10–4 g·m–2·s–1 to 27 × 10–4 g·m–2·s–1, while the asymptotic coking rate changed in the range of 2 × 10–4 g·m–2·s–1 to 6 × 10–4 g·m–2·s–1. SEM and EDX analyses of coked and uncoked coupons revealed that the composition of the oxide layer in contact with the cracked gas, formed after the initial preoxidation or decoking, has an important influence on the amount of coke deposited. Materials that formed a thin Al2O3 layer on the coupon surface showed a higher coking resistance. A uniform surface composition and a high resistance to spalling and fractures are o...
Andres Munoz E Gandarillas - One of the best experts on this subject based on the ideXlab platform.
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coking resistance of specialized coil Materials during steam cracking of sulfur free naphtha
Industrial & Engineering Chemistry Research, 2014Co-Authors: Andres Munoz E Gandarillas, Marie-françoise Reyniers, Guy MarinAbstract:The Reactor Material strongly affects coke formation during steam cracking of hydrocarbons. Therefore, in the past decade several specialized Reactor Materials have been developed that have proven to be efficient in reducing coke formation for ethane steam cracking. However, their beneficial anticoking properties are questioned when heavier feedstocks such as naphtha are cracked. Therefore, the effect of the composition of the Reactor Material has been investigated for ethane and naphtha cracking in an electrobalance setup under industrially relevant conditions. A significant reduction of coke formation is obtained for specialized alloys compared to typical Fe–Cr–Ni heat resistant steels when a sulfur-free naphtha is cracked. A thin layer of alumina on the surface along with manganese chromite provides the highest resistance to coking, as was demonstrated by the SEM and EDX analyses. The decrease in coking rate translates in a run length increase of 50% for a typical naphtha furnace equipped with Reactors...
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influence of the Reactor Material composition on coke formation during ethane steam cracking
Industrial & Engineering Chemistry Research, 2014Co-Authors: Andres Munoz E Gandarillas, Marie-françoise Reyniers, Kevin Van Geem, Guy MarinAbstract:An experimental study of the coking tendency of nine different Materials was carried out in a quartz electrobalance setup with a jet stirred Reactor (JSR) under industrially relevant ethane steam cracking conditions: TMaterial = 1159 K, Ptot = 0.1 MPa, χethane = 73%, dilution δ = 0.33 kgH2O/kgHC. A strong influence of the composition of the Materials on the coking rate as a function of time on-stream was observed. The initial coking rate varied from 5 × 10–4 g·m–2·s–1 to 27 × 10–4 g·m–2·s–1, while the asymptotic coking rate changed in the range of 2 × 10–4 g·m–2·s–1 to 6 × 10–4 g·m–2·s–1. SEM and EDX analyses of coked and uncoked coupons revealed that the composition of the oxide layer in contact with the cracked gas, formed after the initial preoxidation or decoking, has an important influence on the amount of coke deposited. Materials that formed a thin Al2O3 layer on the coupon surface showed a higher coking resistance. A uniform surface composition and a high resistance to spalling and fractures are o...
Kevin Van Geem - One of the best experts on this subject based on the ideXlab platform.
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catalytic effect of dimethyl disulfide on coke formation on high temperature alloys myth or reality
Industrial & Engineering Chemistry Research, 2020Co-Authors: Manjunath Patil, Marie-françoise Reyniers, Stamatis A Sarris, Kim Verbeken, Kevin Van GeemAbstract:The selection of the Reactor Material with the lowest coking tendency can result in substantial economic benefits for the steam cracking process. One of the remaining unresolved points of discussio...
Manjunath Patil - One of the best experts on this subject based on the ideXlab platform.
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catalytic effect of dimethyl disulfide on coke formation on high temperature alloys myth or reality
Industrial & Engineering Chemistry Research, 2020Co-Authors: Manjunath Patil, Marie-françoise Reyniers, Stamatis A Sarris, Kim Verbeken, Kevin Van GeemAbstract:The selection of the Reactor Material with the lowest coking tendency can result in substantial economic benefits for the steam cracking process. One of the remaining unresolved points of discussio...
