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CN-224207983-U - Slurry bed reactor

CN224207983UCN 224207983 UCN224207983 UCN 224207983UCN-224207983-U

Abstract

The utility model relates to the technical field of chemical equipment and discloses a slurry bed reactor which comprises a reaction kettle, a separation structure and a collecting structure, wherein the separation structure and the collecting structure are arranged in the reaction kettle, so that effective separation of gas and liquid phases is realized, a gas-liquid mixture in a reaction cavity enters the separation structure along the radial direction through cooperation of a separation channel and an exhaust channel, the gas is separated from the gas in the separation channel, the gas is guided to an air outlet of the reaction kettle through the exhaust channel, liquid enters a liquid discharge channel to flow back into the reaction cavity under the action of gravity, the collecting structure enables the lower end of the exhaust channel to be closed, the liquid is prevented from entering the exhaust channel, the gas discharge efficiency is effectively improved, the light component liquid is prevented from being carried out, and the separation structure and the collecting structure are arranged, so that the loss of the light component liquid phase is effectively prevented, the gas-liquid separation efficiency is improved, and the cost is reduced.

Inventors

  • SUN LINFENG
  • LIU HANYING
  • DU TAO
  • WU DONGMEI

Assignees

  • 北京石油化工工程有限公司

Dates

Publication Date
20260508
Application Date
20250528

Claims (10)

  1. 1. A slurry bed reactor, comprising: The reaction kettle (1) is provided with a reaction cavity (11), and the top of the reaction kettle (1) is provided with an air outlet (12); The separation structure (2) is arranged in the reaction cavity (11), the upper end of the separation structure (2) is in sealing connection with the top of the reaction kettle (1), the separation structure (2) is provided with a separation channel (22), the separation channel (22) is arranged along the radial direction, an exhaust channel (21) is formed in the middle of the separation structure (2), the outer end of the separation channel (22) is communicated with the reaction cavity (11), the inner end of the separation channel (22) is communicated with the exhaust channel (21), and the upper end of the exhaust channel (21) is communicated with the air outlet (12); The separation structure comprises a flow collecting structure (3), wherein the upper end of the flow collecting structure (3) is connected with the bottom of the separation structure (2), so that the lower end of an exhaust channel (21) is closed, the flow collecting structure (3) is provided with a liquid discharging channel, the upper end of the liquid discharging channel is communicated with the lower end of the separation channel (22), and the lower end of the liquid discharging channel is communicated with the reaction cavity (11).
  2. 2. Slurry bed reactor according to claim 1, characterized in that the separation structure (2) comprises a fixed frame (24) and guide plates (23) arranged between the fixed frames (24), the fixed frame (24) comprises an upper ring frame and a lower ring frame, the upper ends of the guide plates (23) are fixedly connected with the upper ring frame, the lower ends of the guide plates (23) are fixedly connected with the lower ring frame, the guide plates (23) are provided with a plurality of guide plates and are uniformly arranged at intervals along the circumferential direction, and separation channels (22) are formed between two adjacent guide plates (23).
  3. 3. Slurry bed reactor according to claim 2, characterized in that the baffles (23) are corrugated so that the separation channels (22) are arranged in a wave-like manner.
  4. 4. Slurry bed reactor according to claim 2, characterized in that a first distance is provided between two adjacent baffles (23) on the outside and a second distance is provided between two adjacent baffles (23) on the inside in the radial direction, the first distance being larger than the second distance, so that the separation channel (22) has a larger width on the side close to the reaction chamber (11) than on the side close to the exhaust channel (21).
  5. 5. The slurry bed reactor according to any one of claims 2 to 4, wherein a plurality of diversion trenches (231) are provided on both sides of the diversion plate (23), the length direction of the diversion trenches (231) is set in the vertical direction, and the lower ends of the diversion trenches (231) penetrate through the bottom surface of the diversion plate (23) so that the diversion trenches (231) are communicated with the liquid discharge channel.
  6. 6. Slurry bed reactor according to claim 5, characterized in that the channels (231) are corrugated or zigzag arranged along their length.
  7. 7. Slurry bed reactor according to claim 2, characterized in that the current collecting structure (3) comprises a current collector (31) and a current guide body (32) which are connected, the upper end of the current collector (31) is fixedly connected with the lower ring frame, the lower end of the current collector (31) is fixedly connected with the current guide body (32), and the lower end of the current guide body (32) extends below the designed liquid level of the reaction chamber (11).
  8. 8. The slurry bed reactor according to claim 7, wherein the current collector (31) comprises an outer shell portion and an inner shell portion, an upper end of the outer shell portion is connected with an outer ring of the lower ring frame, an upper end of the inner shell portion is connected with an inner ring of the lower ring frame, a lower end of the outer shell portion is opened, a lower end of the inner shell portion is closed, a first liquid discharge flow passage is formed between the inner shell portion and the outer shell portion, a second liquid discharge flow passage is provided in the current collector (32), and the first liquid discharge flow passage and the second liquid discharge flow passage are communicated to form the liquid discharge passage.
  9. 9. The slurry bed reactor according to claim 8, wherein the outer shell portion and the inner shell portion are each of inverted cone configuration such that the first drain flow channel is funnel-shaped.
  10. 10. The slurry bed reactor according to claim 7, wherein the flow guide body (32) has a tubular structure, and the lower end of the flow guide body (32) is provided with an inclined notch to form a flow guide portion.

Description

Slurry bed reactor Technical Field The utility model relates to the technical field of chemical equipment, in particular to a slurry bed reactor. Background The slurry bed reactor is widely applied to multiphase reaction processes in the fields of petrochemical industry, coal chemical industry and the like due to good heat transfer and mass transfer properties. In the prior art, the gas-liquid two-phase mixture at the top of the slurry bed reactor typically enters the downstream separation unit directly via the upper outlet. However, due to entrainment of the light component liquid phase during the reaction, a large amount of light component liquid which is not effectively separated in the gas-liquid mixture flow enters a subsequent treatment system. The method not only aggravates the burden of the downstream separation device and greatly increases the energy consumption of the system, but also obviously improves the construction investment and the operation cost of downstream equipment, and limits the process optimization and the economic benefit improvement of the whole device. Disclosure of utility model In view of the above, the present utility model provides a slurry bed reactor, so as to solve the problems of the prior art that when the slurry bed reactor performs gas-liquid separation, the light component liquid phase substances are easy to be discharged along with the gas, thereby greatly increasing the system energy consumption and having high operation cost. In order to solve the technical problems, the technical scheme of the utility model is as follows: The utility model provides a slurry bed reactor which comprises a reaction kettle, a separation structure and a flow collecting structure, wherein the reaction kettle is provided with a reaction cavity, the top of the reaction kettle is provided with an air outlet, the separation structure is arranged in the reaction cavity, the upper end of the separation structure is connected with the top of the reaction kettle in a sealing way, the separation structure is provided with a separation channel, the separation channel is arranged along the radial direction, the middle part of the separation structure is provided with an exhaust channel, the outer end of the separation channel is communicated with the reaction cavity, the inner end of the separation channel is communicated with the exhaust channel, the upper end of the exhaust channel is communicated with the air outlet, the upper end of the flow collecting structure is connected with the bottom of the separation structure so that the lower end of the exhaust channel is arranged in a sealing way, the upper end of the flow collecting structure is communicated with the lower end of the separation channel, and the lower end of the flow discharging channel is communicated with the reaction cavity. Has the following advantages: Through set up separation structure and current collecting structure in reation kettle inside, the effective separation of gas-liquid two-phase has been realized, through the cooperation of separation channel and exhaust passage, make the gas-liquid mixture in the reaction chamber along radial entering separation structure, gas-liquid separation in the separation channel, gas leads the gas outlet of reation kettle through the exhaust passage, liquid gets into the flowing back of flowing back to the reaction chamber under the effect of gravity, current collecting structure makes the lower extreme of exhaust passage seal, avoid liquid to get into the exhaust passage, avoid the take-out of light component liquid when effectively promoting gas exhaust's efficiency, this separation structure and current collecting structure's setting, the effectual loss that prevents light component liquid phase, improve gas-liquid separation efficiency, the cost is reduced. According to some embodiments of the utility model, the separation structure comprises a fixed frame and guide plates arranged between the fixed frames, the fixed frame comprises an upper ring frame and a lower ring frame, the upper ends of the guide plates are fixedly connected with the upper ring frame, the lower ends of the guide plates are fixedly connected with the lower ring frame, the guide plates are provided with a plurality of guide plates and are uniformly arranged at intervals along the circumferential direction, and the separation channels are formed between two adjacent guide plates. According to some embodiments of the utility model, the baffle is corrugated such that the separation channel is arranged in a wave. According to some embodiments of the utility model, a first space is provided between two adjacent flow guide plates located on the outer side and a second space is provided between two adjacent flow guide plates located on the inner side, and the first space is larger than the second space, so that the width of the separation channel on the side close to the reaction chamber is larger than the width of the