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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：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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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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