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CN-224207730-U - Flue gas adsorption reactor

CN224207730UCN 224207730 UCN224207730 UCN 224207730UCN-224207730-U

Abstract

The utility model provides a flue gas adsorption reactor, and particularly relates to the technical field of flue gas adsorption reactors; the venturi reactor comprises an air inlet section, a venturi reactor and a turbulent flow reactor which are sequentially communicated, and is characterized in that the venturi reactor is formed by sequentially connecting a shrinkage pipe, a venturi tube and a diffusion pipe, the diameter of the venturi tube is smaller than 1/3 of the diameter of an inlet of the shrinkage pipe, the length of the diffusion pipe is larger than 1.5 times of the length of the shrinkage pipe, the near-air section is arranged below the shrinkage pipe, a feeding chute with an inclination angle of 10-20 degrees is arranged on the side wall of the near-air section, and an outlet of the feeding chute extends to the inlet of the venturi reactor. According to the utility model, the diameter of the venturi tube in the venturi reactor is smaller than 1/3 of the inlet of the shrinkage tube, and the design that the length of the diffusion tube is increased by 1.5 times of that of the shrinkage tube is adopted, so that the collision contact probability of smoke and the adsorbent is remarkably improved through a high-speed jet effect, the adsorption utilization efficiency is greatly improved, the gas-solid reaction time is prolonged, and the adsorption reaction is more complete.

Inventors

  • WANG YISHENG
  • Cao Zengzhi
  • QI QINGBO
  • LI TAO
  • CHENG SHIYU

Assignees

  • 济南亘高环保设备有限公司

Dates

Publication Date
20260508
Application Date
20250403

Claims (8)

  1. 1. The flue gas adsorption reactor comprises an air inlet section (1), a venturi reactor (2) and a turbulent flow reactor (3) which are sequentially communicated, and is characterized in that the venturi reactor (2) is formed by sequentially connecting a shrinkage tube (21), a throat tube (22) and a diffusion tube (23), the diameter of the throat tube (22) is smaller than 1/3 of the diameter of an inlet of the shrinkage tube (21), and the length of the diffusion tube (23) is larger than 1.5 times of the length of the shrinkage tube (21); The turbulence reactor (3) is arranged above the spreading pipe (23) and is internally provided with a detachable turbulence assembly (4); The air inlet section (1) is arranged below the shrinkage tube (21), the side wall of the air inlet section is provided with a feed chute (5) with an inclination angle of 10-20 degrees, and the outlet of the feed chute (5) extends to the inlet of a throat pipe (22) of the venturi reactor (2).
  2. 2. A flue gas adsorption reactor according to claim 1, wherein the cone angle of the diffusion tube (23) of the Venturi reactor (2) is smaller than the cone angle of the shrinkage tube (21), and an annular diversion trench (231) is arranged on the inner wall of the diffusion tube (23) so as to facilitate rapid circulation of flue gas.
  3. 3. A flue gas adsorption reactor according to claim 1, wherein the turbulence assembly (4) comprises a support body (41), a central shaft (42), turbulence blades (43) and a support ring plate (44), the length of the support body (41) is longer than the diameter of the turbulence reactor (3), two ends of the support body can be fixed on the wall plate of the turbulence reactor (3) through a disassembling clamp, the support body (41) is fixed on the support ring plate (44), and the central shaft (42) is vertically welded to the middle part of the support body (41) and extends into the turbulence reactor (3).
  4. 4. A flue gas adsorption reactor according to claim 3 wherein the turbulence blades (43) are welded to the central shaft (42) in a spiral array arrangement, and a plurality of flow guide through holes (431) of the same size are uniformly formed in the surface of the turbulence blades (43).
  5. 5. A flue gas adsorbing reactor as set forth in claim 3, wherein the turbulence blades (43) are installed in the same direction as the flue gas flow direction for reducing resistance.
  6. 6. A flue gas adsorption reactor according to claim 1, wherein the feed chute (5) is inclined upwards at 15 DEG, one end of which is welded in a preformed hole of the inlet section (1), and the other end of which is connected to the feed pump.
  7. 7. A flue gas adsorption reactor according to claim 1, wherein a cover plate (6) is provided on top of the feed chute (5) for reducing material overflow.
  8. 8. A flue gas adsorbing reactor as set forth in claim 1, wherein the bottom of the feed chute (5) is provided with a vibration motor (7) for vibration prevention of clogging of the slot.

Description

Flue gas adsorption reactor Technical Field The utility model relates to the technical field of flue gas adsorption reactors, in particular to a flue gas adsorption reactor. Background Along with the increasingly strict environmental protection requirements, the industrial flue gas treatment technology is continuously upgraded, and the adsorption reactor is used as core equipment of a contact reaction system, so that the structural optimization of the adsorption reactor has important significance for improving the pollutant removal efficiency and reducing the operation cost. The traditional flue gas adsorption device is provided with a plurality of single Venturi structures or static mixers, so that the problems of uneven dispersion of the adsorbent, insufficient gas-solid contact time, overlarge local pressure drop and the like exist, and in the carbon production industry, the flue gas produced in the high-temperature roasting process contains a large amount of viscous pollutants such as asphalt tar, polycyclic aromatic hydrocarbon and the like. For example, the throat diameter and the length of the diffusion section of a conventional Venturi reactor are unreasonably designed, so that high-speed flue gas and an adsorbent cannot form sufficient turbulence after being mixed, short-circuit flows are easily formed in partial areas, the adsorption efficiency is remarkably reduced, meanwhile, a fixed turbulence component is easy to accumulate ash and block, asphalt tar is easily adhered to the surface of the fixed turbulence component to form a hard scaling layer, the reactor is required to be integrally disassembled during shutdown decoking operation, and the production continuity is seriously influenced. In the prior art, although the flue gas is accelerated through the shrinkage tube, the ratio of the diameter of the throat tube to the shrinkage tube is too large, and a sufficient negative pressure injection effect cannot be formed, so that the adding amount of the adsorbent is limited. The diffusion section has overlarge cone angle and insufficient length, so that the airflow is decelerated too early in the diffusion section, the kinetic energy recovery efficiency is low, the equipment energy consumption is increased, when the concentration of the flue gas particles is fluctuated, the flow distortion phenomenon caused by local pore channel blockage is easy to occur, in addition, the feeding port is mostly arranged vertically or horizontally, the adsorbent is easy to accumulate at the inlet, and the problems of uneven feeding, material overflow and the like exist. Aiming at the defects, a flue gas adsorption reactor which is compact in structure, high in gas-solid mixing efficiency and convenient to maintain is urgently needed, the operation resistance is reduced while the adsorption effect is ensured, and the rapid maintenance and replacement of the accurate adding and turbulent flow assembly of the adsorbent are realized. Disclosure of utility model The present utility model is directed to a flue gas adsorption reactor, which solves the problems set forth in the background art. The utility model provides a flue gas adsorption reactor which comprises an air inlet section, a venturi reactor and a turbulent flow reactor which are communicated in sequence, and is characterized in that the venturi reactor is formed by sequentially connecting a shrinkage pipe, a throat pipe and a diffusion pipe, the diameter of the throat pipe is smaller than 1/3 of the diameter of an inlet of the shrinkage pipe, and the length of the diffusion pipe is larger than 1.5 times of the length of the shrinkage pipe; the turbulence reactor is arranged above the spreading pipe, and a detachable turbulence assembly is arranged in the turbulence reactor; The near-air section is arranged below the shrinkage pipe, the side wall of the near-air section is provided with a feed chute with an inclination angle of 10-20 degrees, and the outlet of the feed chute extends to the inlet of the venturi reactor. Preferably, the cone angle of the diffusion tube of the venturi reactor is smaller than the cone angle of the shrinkage tube, and the inner wall of the diffusion tube is provided with an annular diversion trench, so that the rapid circulation of smoke is facilitated. Preferably, the turbulence assembly comprises a support body, a central shaft, turbulence blades and a support ring plate, wherein the length of the support body is longer than the diameter of the turbulence reactor, two ends of the support body can be fixed on the wall plate of the turbulence reactor through a detachable clamp, the support body is fixed on the support ring plate, and the central shaft is vertically welded at the middle part of the support body and extends into the turbulence reactor. Preferably, the turbulent flow blades are arranged and welded on the central shaft in a spiral array, and a plurality of flow guide through holes with the same size are uniformly forme