WO2020052200A1 - 内构件及包括该内构件的流化床反应器 - Google Patents

内构件及包括该内构件的流化床反应器 Download PDF

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Publication number
WO2020052200A1
WO2020052200A1 PCT/CN2019/075335 CN2019075335W WO2020052200A1 WO 2020052200 A1 WO2020052200 A1 WO 2020052200A1 CN 2019075335 W CN2019075335 W CN 2019075335W WO 2020052200 A1 WO2020052200 A1 WO 2020052200A1
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baffle
circular
circular baffle
baffle plate
fluidized bed
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PCT/CN2019/075335
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English (en)
French (fr)
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朱廷钰
徐文青
谢军
万斌
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中国科学院过程工程研究所
北京科博思创环境工程有限公司
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Publication of WO2020052200A1 publication Critical patent/WO2020052200A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles

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  • the present disclosure relates to the technical field of chemical equipment, for example, to an internal component and a fluidized bed reactor including the internal component.
  • the fluidized bed reactor has good heat and mass transfer performance, it has been widely used in industry.
  • the present disclosure provides an internal component and a fluidized bed reactor including the internal component, which can solve the problems of long gas-solid two-phase residence time, low catalyst utilization rate, and serious backmixing of solid particles caused by the existence of bubbles in the related art. .
  • An inner member includes a first circular baffle, a second circular baffle, and at least one third circular baffle located between the first circular baffle and the second circular baffle.
  • the first circular baffle, the second circular baffle, and the third circular baffle are arranged in parallel at intervals; at least one first baffle and at least one second baffle, the first baffle
  • the plate and the second baffle are both disposed between the first circular baffle and the second circular baffle, the first baffle and the second baffle are intersected, and the The first baffle and the second baffle are both intersected with the third circular baffle; the circular baffle, the second circular baffle, the third circular baffle, all The first baffle plate and the second baffle plate are provided with air distribution holes.
  • FIG. 1 is a top view of an inner member provided by an embodiment
  • FIG. 2 is a front view of an internal component provided by an embodiment
  • FIG. 3 is a left side view of an inner member provided by an embodiment
  • FIG. 4 is a side view of an arrangement of a first circular baffle, a second circular baffle, and a third circular baffle according to an embodiment
  • FIG. 5 is a schematic structural diagram of internal components and a fluidized bed reactor according to an embodiment.
  • this embodiment provides an inner member 10 including: a plurality of circular baffles 1, a plurality of circular baffles 1 are arranged in parallel at intervals, and a plurality of circular baffles 1 includes a first A circular baffle 11, a second circular baffle, and at least one third circular baffle located between the first circular baffle 11 and the second circular baffle; and at least one first The baffle 2 and at least one second baffle 3, the first baffle 2 and the second baffle 3 are both disposed between the first circular baffle and the second circular baffle, and the first baffle 2 and the second baffle 3
  • the baffle plate 3 is intersected, and the first baffle plate 2 and the second baffle plate 3 are intersected with the third circular baffle plate; Opening cloth air holes 4.
  • Adding multiple internal members 10 into the fluidized bed reactor can divide the interior of the fluidized bed reactor into a plurality of independent reaction spaces.
  • the pore structure formed by this device can effectively break the air bubbles, strengthen the momentum exchange between gas and solid, avoid the occurrence of "air cushion” and "air knots", improve the distribution of air flow, and optimize the flow field.
  • the unopened part on the baffle can support the catalyst, and the catalyst performs gas-solid catalytic reaction with the raw material gas to enhance the friction between the particles and improve the utilization efficiency of the catalyst.
  • the gas-solid separation effectively inhibits gas-solid backmixing.
  • first baffle plates 2 When the number of the first baffle plates 2 is more than one, a plurality of first baffle plates 2 are arranged in parallel at intervals.
  • second baffle plates 3 When the number of the second baffle plates 3 is more than one, a plurality of second baffle plates 3 are arranged in parallel at intervals.
  • the included angle between the circular baffle 1 and the first baffle 2 is 30 degrees to 90 degrees
  • the second baffle 3 is perpendicular to the circular baffle 1 and the first baffle 2 and has a simple structure.
  • the circular baffle 1, the first baffle 2 and the second baffle 3 are fixed by welding, and the fabrication is simple.
  • the opening rates of the air distribution holes 4 on the circular baffle 1, the first baffle 2, and the second baffle 3 are all 30% to 80%, so as to effectively break the air bubbles and improve the air flow. Distribution to optimize the flow field.
  • the opening ratio refers to the ratio between the punching area and the entire plate.
  • the thickness of the circular baffle 1, the first baffle 2, and the second baffle 3 ranges from 0.01 m to 0.1 m.
  • the material of the three types of baffles is one or a combination of at least two types of stainless steel, ceramic, glass steel or carbon steel, which can meet the requirements of various fluidized beds.
  • This embodiment also provides a fluidized bed reactor including the above-mentioned internal member 10.
  • the distance between the lowest point of the inner member 10 and the bottom of the fluidized bed reactor ranges from 0.4 meters to 2 meters.
  • the first circular baffle 11 is located above the second circular baffle.
  • the angle between the first circular baffle at the uppermost end of the inner member 10 and the central axis of the fluidized bed reactor is 30 degrees to 90 degrees.
  • the shape of the air distribution holes 4 on the inner member 10 may be circular or polygonal, and the arrangement of the air distribution holes 4 is circular or polygonal.
  • the diameter of the circular baffle 1 of the inner member 10 is 0.5 to 0.9 times the diameter of the fluidized bed reactor.
  • the three types of baffles are made of stainless steel and each has a thickness of 0.03 meters.
  • the three types of baffles are perpendicular to each other.
  • the opening rate of the air holes 4 on the three types of baffles is 60%.
  • the arrangement of the air holes 4 is circular.
  • the diameter of the circular baffle 1 is 0.5 times the diameter of the fluidized bed reactor corresponding to the circular baffle 1.
  • the uppermost circular baffle 1 reacts with the fluidized bed.
  • the angle between the central axis of the reactor is 45 degrees, and the distance between the lowest point of the inner member 10 and the bottom of the fluidized bed reactor is 0.6 meters.
  • the three types of baffle plates are all made of ceramic and each has a thickness of 0.02 meters.
  • the angle between the circular baffle plate 1 and the first baffle plate 45 is 45 degrees, and the second baffle plate 3 is circular.
  • the baffle 1 and the first baffle 2 are vertical.
  • the opening rate of the air holes 4 on the three types of baffles is 70%.
  • the arrangement of the air holes 4 on the three types of baffles is square.
  • the diameter of 1 is 0.5 times the diameter of the fluidized bed reactor corresponding to the circular baffle 1.
  • the angle between the uppermost circular baffle 1 and the central axis of the fluidized bed reactor is 90 degrees, and the internal component 10 is the lowest.
  • the distance between the point and the bottom of the fluidized bed reactor was 0.5 meters.
  • the three types of baffles are made of stainless steel, the thickness of the circular baffle 1 is 0.025 meters, the thickness of the first baffle 2 and the second baffle 3 are 0.03 meters, and the circular baffle 1
  • the angle with the first baffle 2 is 60 degrees
  • the second baffle 3 is perpendicular to the circular baffle 1 and the first baffle 2
  • the opening rate of the air distribution holes 4 on the three types of baffles is 80 %
  • the arrangement of the air distribution holes 4 on the three types of baffles is square.
  • the diameter of the circular baffle 1 is 0.6 times the diameter of the fluidized bed reactor corresponding to the circular baffle 1.
  • the first circular shape The angle between the baffle and the central axis of the fluidized bed reactor is 90 degrees, and the distance between the lowest point of the internal member 10 and the bottom of the fluidized bed reactor is 0.6 meters.
  • the three types of baffles are made of carbon steel and each has a thickness of 0.035 meters.
  • the angle between the circular baffle 1 and the first baffle 2 is 90 degrees, and the second baffle 3 and the circular The baffle 1 and the first baffle 2 are vertical.
  • the opening rate of the air holes 4 on the three types of baffles is 65%.
  • the arrangement of the air holes 4 on the three types of baffles is diamond-shaped.
  • the diameter of the plate 1 is 0.55 times the diameter of the fluidized bed reactor corresponding to the circular baffle 1, and the angle between the circular baffle 1 located at the uppermost end of the inner member 10 and the central axis of the fluidized bed reactor is 75.
  • the distance between the lowest point of the inner member 10 and the bottom of the fluidized bed reactor is 0.55 meters.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

一种内构件及包括该内构件的流化床反应器，该内构件包括第一圆形挡板（11）、第二圆形挡板（12）及位于第一圆形挡板（11）和第二圆形挡板（12）之间的至少一个第三圆形挡板（13），第一圆形挡板（11）、第二圆形挡板（12）及第三圆形挡板（13）平行间隔设置；至少一个第一挡板（2）和至少一个第二挡板（3），第一挡板（2）和第二挡板均（3）设置于第一圆形挡板（11）和第二圆形挡板（12）之间。

Description

内构件及包括该内构件的流化床反应器
本申请要求申请日为2018年09月14日、申请号为201811074885.4的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及化工设备技术领域，例如涉及一种内构件及包括该内构件的流化床反应器。
背景技术
由于流化床反应器具有良好的传热和传质性能，因此在工业上获得了广泛的应用。
相关技术中的流化床反应器主要存在以下问题：
(1)气泡的存在会减弱气固两相的动量交换，导致“气垫”和“气节”的产生，造成气相和固相停留时间较长，不易建立起浓度与温度梯度。
(2)气体与固态颗粒摩擦不充分，催化剂利用率低。
(3)流化床反应器内的固体颗粒返混严重，使目标产物的收率下降。
发明内容
本公开提供了一种内构件及包括该内构件的流化床反应器，可以解决相关技术中由于气泡存在导致的气固两相停留时间长、催化剂利用率低以及固体颗粒返混严重的问题。
一种内构件，包括：第一圆形挡板、第二圆形挡板及位于所述第一圆形挡板和所述第二圆形挡板之间的至少一个第三圆形挡板，所述第一圆形挡板、所述第二圆形挡板及所述第三圆形挡板平行间隔设置；至少一个第一挡板和至少一个第二挡板，所述第一挡板和所述第二挡板均设置于所述第一圆形挡板和所述第二圆形挡板之间，所述第一挡板和所述第二挡板交叉设置，且所述第一挡板和所述第二挡板均与所述第三圆形挡板交叉设置；所述圆形挡板、所述第二圆形挡板、所述第三圆形挡板、所述第一挡板和所述第二挡板上均开有布风孔。
附图说明
图1是一实施例提供的内构件的俯视图；
图2是一实施例提供的内构件的主视图；
图3是一实施例提供的内构件的左视图；
图4是一实施例提供的第一圆形挡板、第二圆形挡板及第三圆形挡板排布的侧视图；
图5是一实施例提供的内构件与流化床反应器的结构示意图。
图中：10、内构件；1、圆形挡板；11、第一圆形挡板；12、第二圆形挡板；13、第三圆形挡板；2、第一挡板；3、第二挡板；4、布风孔。
具体实施方式
如图1-图4所示，本实施例提供了一种内构件10，包括：多个圆形挡板1，多个圆形挡板1平行间隔设置，多个圆形挡板1包括第一圆形挡板11、第二圆形挡板及位于所述第一圆形挡板11和所述第二圆形挡板之间的至少一个第三圆形挡板；及至少一个第一挡板2和至少一个第二挡板3，第一挡板2和第二挡板3均设置于第一圆形挡板和第二圆形挡板之间，第一挡板2和第二挡板3交叉设置，且第一挡板2和第二挡板3均与第三圆形挡板交叉设置；多个圆形挡板1、第一挡板2和第二挡板3上均开有布风孔4。
在流化床反应器内加入多个内构件10，能够把流化床反应器内部分隔为多个独立反应空间，通过圆形挡板1、第一挡板2、第二挡板3以及三者形成的孔隙结构能够有效地破碎气泡，强化气固两相的动量交换，避免“气垫”和“气节”的出现，改善气流分布，优化流场。同时，挡板上的未开孔部分可以担载催化剂，催化剂与原料气进行气固催化反应，增强颗粒之间的摩擦，提高催化剂的利用效率，同时气固分离有效抑制气固返混。
第一挡板2的数量多于一个时，多个第一挡板2平行间隔设置。第二挡板3的数量多于一个时，多个第二挡板3平行间隔设置。
在一实施例中，圆形挡板1与第一挡板2之间的夹角为30度至90度，第二挡板3垂直于圆形挡板1和第一挡板2，结构简单。
在一实施例中，圆形挡板1、第一挡板2和第二挡板3三者之间通过焊接固定，制作简便。
在一实施例中，位于圆形挡板1、第一挡板2以及第二挡板3上的布风孔4的开孔率均为30％至80％，从而能有效破碎气泡，改善气流分布，优化流场。其中， 开孔率指的是冲孔区与整张板之间的比例。
在一实施例中，圆形挡板1、第一挡板2、第二挡板3的厚度范围为0.01米至0.1米。
三类挡板的材质为不锈钢、陶瓷、玻璃钢或碳钢中的一种或至少两种的组合，能满足多种流化床的要求。
本实施例还提供了一种包括上述内构件10的流化床反应器。
如图5所示，内构件10最低点与流化床反应器底部距离范围为0.4米至2米。第一圆形挡板11位于第二圆形挡板上方，内构件10最上端的第一圆形挡板与流化床反应器中心轴线的角度范围为30度至90度。内构件10上的布风孔4形状可以是圆形或多边形等，布风孔4的排列方式为圆形或多边形方式排列。内构件10的圆形挡板1的直径为流化床反应器直径的0.5倍至0.9倍。
在一实施方式中，三类挡板均由不锈钢制成且厚度均为0.03米，三类挡板之间相互垂直，三类挡板上布风孔4的开孔率均为60％，布风孔4排列方式均为圆形排列，圆形挡板1的直径为与圆形挡板1相适应的流化床反应器直径的0.5倍，最上端的圆形挡板1与流化床反应器中心轴线之间的角度为45度，内构件10最低点距离流化床反应器底部距离为0.6米。
在一实施方式中，三类挡板均由陶瓷制成且厚度均为0.02米，圆形挡板1与第一挡板2之间的角度为45度，第二挡板3均与圆形挡板1和第一挡板2垂直，三类挡板上布风孔4的开孔率均为70％，三类挡板上布风孔4的排列方式均为正方形排列，圆形挡板1的直径为与圆形挡板1相适应的流化床反应器直径的0.5倍，最上端圆形挡板1与流化床反应器中心轴线之间的角度为90度，内构件10最低点距离流化床反应器底部距离为0.5米。
在一实施方式中，三类挡板均由不锈钢制成，圆形挡板1的厚度为0.025米，第一挡板2和第二挡板3的厚度均为0.03米，圆形挡板1与第一挡板2之间的角度为60度，第二挡板3与圆形挡板1和第一挡板2均垂直，三类挡板上布风孔4的开孔率均为80％，三类挡板上布风孔4的排列方式均为正方形排列，圆形挡板1的直径为与圆形挡板1相适应的流化床反应器直径的0.6倍，第一圆形挡板与流化床反应器中心轴线之间的角度为90度，内构件10最低点距离流化床反应器底部距离为0.6米。
在一实施方式中，三类挡板均由碳钢制成且厚度均为0.035米，圆形挡板1与第一挡板2之间的角度为90度，第二挡板3与圆形挡板1和第一挡板2均垂直， 三类挡板上布风孔4的开孔率均为65％，三类挡板上布风孔4的排列方式均为菱形排列，圆形挡板1的直径为与圆形挡板1相适应的流化床反应器直径的0.55倍，位于内构件10的最上端圆形挡板1与流化床反应器中心轴线之间的角度为75度，内构件10最低点距离流化床反应器底部距离为0.55米。

Claims (10)

  1. 一种内构件，包括：
    第一圆形挡板(11)、第二圆形挡板(12)及位于所述第一圆形挡板(11)和所述第二圆形挡板(12)之间的至少一个第三圆形挡板(13)，所述第一圆形挡板(11)、所述第二圆形挡板(12)及所述第三圆形挡板(13)平行间隔设置；及
    至少一个第一挡板(2)和至少一个第二挡板(3)，所述第一挡板(2)和所述第二挡板(3)均设置于所述第一圆形挡板(11)和所述第二圆形挡板(12)之间，所述第一挡板(2)和所述第二挡板(3)交叉设置，且所述第一挡板(2)和所述第二挡板(3)均与所述第三圆形挡板(13)交叉设置；
    所述第一圆形挡板(11)、所述第二圆形挡板(12)、所述第三圆形挡板(13)、所述第一挡板(2)和所述第二挡板(3)上均开有布风孔(4)。
  2. 根据权利要求1所述的内构件，其中，所述第一挡板(2)为多个，多个所述第一挡板(2)平行间隔设置。
  3. 根据权利要求1所述的内构件，其中，所述第二挡板(3)为多个，多个所述第二挡板(3)平行间隔设置。
  4. 根据权利要求1所述的内构件，其中，所述第三圆形挡板(13)与所述第一挡板(2)之间的夹角为30度至90度，所述第二挡板(3)垂直于所述第三圆形挡板(13)和所述第一挡板(2)。
  5. 根据权利要求1所述的内构件，其中，所述第一圆形挡板(11)、所述第二圆形挡板(12)、所述第三圆形挡板(13)、所述第一挡板(2)和所述第二挡板(3)之间通过焊接固定。
  6. 根据权利要求1所述的内构件，其中，所述第一圆形挡板(11)、所述第二圆形挡板(12)、所述第三圆形挡板(13)、所述第一挡板(2)以及所述第二挡板(3)的开孔率均为30％至80％。
  7. 根据权利要求1所述的内构件，其中，所述第一圆形挡板(11)、第二圆形挡板(12)、第三圆形挡板(13)、第一挡板(2)及第二挡板(3)的厚度范围均为0.01米至0.1米。
  8. 一种流化床反应器，包括如权利要求1-7任一项所述的内构件。
  9. 根据权利要求8所述的流化床反应器，其中，所述内构件的最低点距离所述流化床反应器底部的距离为0.4米至2米。
  10. 根据权利要求8所述的流化床反应器，其中，所述第一圆形挡板(11) 位于所述第二圆形挡板(12)上方，所述第一圆形挡板(11)与流化床反应器中心轴线的角度范围为30度至90度。
PCT/CN2019/075335 2018-09-14 2019-02-18 内构件及包括该内构件的流化床反应器 WO2020052200A1 (zh)

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CN201811074885.4 2018-09-14
CN201811074885.4A CN109012512B (zh) 2018-09-14 2018-09-14 一种内构件及包括该内构件的流化床反应器

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WO2020052200A1 true WO2020052200A1 (zh) 2020-03-19

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