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公开(公告)号：US20240310044A1
公开(公告)日：2024-09-19
申请号：US18604100
申请日：2024-03-13
发明人： Baozhong Zhao , Xueping Li , Eduardo Hart , Benedict Cardaci , Sehjin Kim , William Morgan
摘要： Electrical heater systems including one or multiple electrical heaters and a stack for combusting materials leaked into and vented from the electrical heaters. Configurations may include fluid conduits, pressure doors and other equipment for controlling a flow of leaked process fluid between the heater enclosure and the stack. Configurations may also include a purge gas distribution system for purging heater enclosures and preventing thermal shock of electrical heating elements.
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公开(公告)号：US20240125513A1
公开(公告)日：2024-04-18
申请号：US18486607
申请日：2023-10-13
发明人： Baozhong Zhao , Richard Jibb , David Guymon , Alejandro Carrillo
CPC分类号： F24H3/0405 , H05B1/0244 , H05B2203/005
摘要： An electric air heater system including a first electric air heater module. The first electric air heater module including an outer casing having an inner surface, a first end, and a second end; a refractory insulation layer in tight communication with the outer casing; an inner cavity within the refractory insulation layer; and a plurality of tubes extending through the inner cavity from the first end to the second end, the plurality of tubes each having an exterior surface. Each tube is fixed relative to the outer casing at the first end, and each tube has an electrical connection disposed at the first end. The plurality of tubes is arranged into one or more bundles of tubes, where each bundle includes two or more tubes having a plurality of fins extending radially from the exterior surface, and a heating element axially through a hollow interior of the tube.
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公开(公告)号：US20240280261A1
公开(公告)日：2024-08-22
申请号：US18582436
申请日：2024-02-20
发明人： Baozhong Zhao , Aijing Yin , Marijn Kamphuis , Alejandro Carrillo , Marcio Razuk
CPC分类号： F23D23/00 , F24H3/002 , F24H9/02 , F24H3/006 , F24H2250/00
摘要： An apparatus for heating petroleum, petrochemical, chemical process fluids, and boiler feed water or steam generation with a combination, or individual operation, of electrical elements and fired burners. The apparatus includes a radiant heating section and a flue gas stack for exhausting a combustion gas to the atmosphere. The radiant section includes one or more process coils, one or more fuel-fired burners for combusting a fuel and producing the combustion gas, where the one or more fuel-fired burners are arranged to provide radiant energy to a first area of the one or more process coils, and one or more electrical heating elements arranged to provide radiant energy to a second area of the one or more process coils. The one or more electrical heating elements are configured to provide 5% or more of a combined maximum energy output of the fuel-fired burners and the electrical heating elements.
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公开(公告)号：US20220154084A1
公开(公告)日：2022-05-19
申请号：US17455144
申请日：2021-11-16
IPC分类号： C10G9/20
摘要： A system for cracking hydrocarbons including a fired heater having a radiant section and a convective section. The radiant coil is disposed within the radiant section of the heater, the radiant coil having three to seven rows of tubes, wherein each row comprises two multi-pass tubes, and wherein the multi-pass tubes of the three to seven rows of tubes are collectively disposed symmetrically or pseudo symmetrically within the radiant section of the heater. The system further including a transfer line exchanger fluidly connected to an outlet tube of each of the three to seven rows of tubes.
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公开(公告)号：US20240352338A1
公开(公告)日：2024-10-24
申请号：US18643263
申请日：2024-04-23
发明人： Baozhong Zhao , Eduardo Hart , Stephen Stanley , Kandasamy Sundaram , Aijing Yin , Xueping Li
IPC分类号： C10G9/24
CPC分类号： C10G9/24
摘要： An apparatus including a radiant heating section and a flue gas stack; one or more process coils disposed within the radiant heating section; one or more fuel-fired burners disposed within the radiant heating section, the one or more fuel-fired burners configured for combusting a fuel and producing the combustion gas; one or more electrical heating elements disposed within the radiant heating section, the one or more electrical heating elements arranged to provide a second radiant energy to a lower elevation of the one or more process coils; and an internal baffle located at an elevation between the upper elevation and the lower elevation, the internal baffle arranged to provide shielding of the one or more electrical heating elements from flame and combustion gases from the one or more fuel-fired burners.
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公开(公告)号：US20240093867A1
公开(公告)日：2024-03-21
申请号：US18463064
申请日：2023-09-07
发明人： Baozhong Zhao , Eduardo Hart , Xueping Li , Alejandro S. Carrillo
CPC分类号： F23J15/006 , B01D53/8631 , F23J15/02 , B01D2257/404 , F23J2219/10
摘要： A heater includes a convection section with columns and tube sheets coupled to the columns with tubes received in the tube sheets. The convection section includes a space between the tube sheets associated with corresponding pairs of columns. A structural frame is coupled to the columns and positioned in the space to slidably receive one or more catalyst support beds for loading or unloading a catalyst into the convection section through a lateral side of the convection section of the heater. The structural frame may include beams, struts, slide plates, and other frame elements that assist with supporting the catalyst support beds and enable sliding of the catalyst support beds with respect to the structural frame.
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公开(公告)号：US20230405536A1
公开(公告)日：2023-12-21
申请号：US18332965
申请日：2023-06-12
IPC分类号： B01F25/435 , B01F25/431 , B01F25/4314 , B01F23/232 , B01F35/91
CPC分类号： B01F25/435 , B01F25/431971 , B01F25/4314 , B01F2025/913 , B01F35/91 , B01F2215/0422 , B01F23/232
摘要： An inline static mixer includes an outer tube and an inner tube positioned inside the outer tube and arranged coaxially with respect to the outer tube with a space between the inner and outer tubes. The inner tube is operable to receive and convey a hydrocarbon stream and the outer tube is operable to receive and convey a diluent stream. At least one baffle extends from the inner tube toward the outer tube and through at least a portion of the space that is operable to generate a twisted diluent flow from the diluent stream. The twisted diluent flow and the hydrocarbon stream are mixed downstream of an outlet of the inner tube with the twisted diluent flow forming a boundary layer along an internal surface of the outer tube to minimize fouling from liquid or liquid droplets of the hydrocarbon stream after mixing.
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公开(公告)号：US20230324123A1
公开(公告)日：2023-10-12
申请号：US18188096
申请日：2023-03-22
发明人： Baozhong Zhao , Xueping Li , Alejandro Carrillo
CPC分类号： F27D17/004 , F27D99/0006 , F27D2017/006 , F27D2099/0015
摘要： Systems and processes for external combustion air preheating for providing preheated combustion air to a furnace. The furnace systems convective heating section includes multiple heating coils for waste heat recovery. The heating coils may be used for preheating a feed (feed preheat coils), heating a boiler feed water, superheating steam, or heating or superheating a feed stream prior to the feed being fed to the radiant coil. The waste heat in the combustion gas is also used to heat a heat transfer fluid, which may be used to pre-heat combustion air or for other purposes within the plant.
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公开(公告)号：US20230303935A1
公开(公告)日：2023-09-28
申请号：US18188235
申请日：2023-03-22
发明人： Kandasamy M. Sundaram , Thomas W. Gronauer , Baozhong Zhao , Stephen J. Stanley , Marijn Kamphuijs , Frank D. McCarthy , Jose De Barros
IPC分类号： C10G47/22
CPC分类号： C10G47/22 , C10G2400/20 , C10G2300/4081
摘要： A process including preheating a hydrocarbon feed in a first preheat zone of a convection section, recovering a preheated hydrocarbon stream; heating the preheated hydrocarbon stream in a secondary transferline exchanger, recovering a heated hydrocarbon stream; feeding the heated hydrocarbon stream to a second preheat zone of the convection section to vaporize a portion of heated hydrocarbon stream, recovering a cracking feedstream; cracking hydrocarbons in the cracking feedstream in one or more coils in a radiant section, recovering a cracked hydrocarbon product; and cooling the cracked hydrocarbon product in the secondary transferline exchanger in indirect heat exchange with the preheated hydrocarbon stream, recovering a cooled hydrocarbon product stream.
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公开(公告)号：US20230303934A1
公开(公告)日：2023-09-28
申请号：US18170448
申请日：2023-02-16
发明人： Baozhong Zhao , David Lee Guymon , Richard John Jibb , Xueping Li , Kandasamy Sundaram , Eduardo Hart Rhedey , Stephen J. Stanley
摘要： An electrically heated furnace including one or more unit cells. Each unit cell includes a radiant heating section, one or more process coils disposed within the radiant heating section, and a quench unit for cooling a cracked product from the one or more process coils and producing a quenched reaction product. The furnace also includes one or more electrical heating elements disposed within the radiant heating section, the one or more electrical heating elements are arranged to provide radiant energy to the one or more process coils. Further, the electrically heated furnace includes a first area corresponding to a heating area of the one or more electrical heating elements, a second area corresponding to a wall area of the wall on which the one or more electrical heating elements are disposed, and a third area corresponding to a surface area of the one or more process coils.
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