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CN-122006687-A - Regeneration treatment method for organic matter adsorption material

CN122006687ACN 122006687 ACN122006687 ACN 122006687ACN-122006687-A

Abstract

The invention discloses a regeneration treatment method of an organic matter adsorption material, belongs to the technical field of adsorption material treatment, and solves the problem that the regeneration treatment efficiency of the adsorption material is not ideal in the prior art. The method comprises the steps of scattering and drying an adsorption material to be treated at 400-600 ℃, preheating, carrying out pyrolysis reaction at 800-1100 ℃ to obtain a high-temperature gas-solid mixed phase, rapidly cooling, enabling the gas phase to enter scattering and drying operation again after heat exchange so as to recycle again, and obtaining the solid phase which is the adsorption material after treatment. According to the method provided by the invention, the hot air is recycled after pyrolysis gas and heat exchange are completed, so that the fuel cost is reduced, and the rapid drying and preheating of materials are realized through the multi-stage cyclone heat exchanger.

Inventors

  • HAN DING
  • CHEN YANXIN
  • ZHAO BO
  • HUANG SONG
  • YAO YANFEI

Assignees

  • 西安建筑科技大学

Dates

Publication Date
20260512
Application Date
20260325

Claims (9)

  1. 1. The organic matter adsorbing material regenerating process includes the following steps: scattering and drying an adsorption material to be treated at 400-600 ℃ and then preheating; carrying out pyrolysis reaction at 800-1100 ℃ to obtain a high-temperature gas-solid mixed phase; And (3) rapidly cooling, re-entering the gas phase into the scattering and drying operation after heat exchange to recycle again, wherein the solid phase is the treated adsorption material.
  2. 2. The method according to claim 1, wherein the break-up drying is performed in a drying device; and/or, the preheating is performed in a preheating device; And/or, the pyrolysis reaction is performed in an external circulation pyrolysis reactor; And/or, the rapid cooling is performed in a suspension cooling device; and/or, the solid phase enters a finished product bin.
  3. 3. The method according to claim 2, wherein the preheating device consists of a 1-4 stage cyclone heat exchanger; the preheating mode is to preheat through high-temperature inert gas.
  4. 4. The method according to claim 2, wherein during the pyrolysis reaction, the bottom of the external circulation type pyrolysis reactor generates anaerobic smoke dust with the temperature of 800-1100 ℃ through a pyrolysis blast furnace, and the temperature of the top of the external circulation type pyrolysis reactor is 600-900 ℃.
  5. 5. The method of claim 2, wherein the suspension cooling device comprises a low temperature inert gas; the rapid cooling mode is a suspension air cooling mode; And the temperature of the low-temperature inert gas is increased to 200-500 ℃ after the low-temperature inert gas is subjected to heat exchange by cooling the pyrolysis material.
  6. 6. The method according to any one of claim 3 or claim 5, wherein the high temperature inert gas and the low temperature inert gas are each any one or a combination of several of raw gas, nitrogen and carbon dioxide.
  7. 7. The method of claim 1, wherein after the rapid cooling operation, the pyrolysis product temperature is <80 ℃; and/or the temperature of the gas phase is 200-500 ℃ after heat exchange.
  8. 8. The method according to claim 1, wherein after the scattering and drying, the reaction system is collected by a dust collecting device under the carrying of flue gas; The volume content of oxygen in the flue gas is 0-1%, The flue gas is discharged after being treated, and the temperature is less than 85 ℃ and the dust concentration is less than 10 mg/Nm 3 when the flue gas is discharged.
  9. 9. A system for regenerating an adsorbent material according to any one of claims 1 to 8, comprising: the hot blast stove provides stable and controllable high-temperature airflow through fuel combustion or other energy conversion, and meets the drying and heating requirements of a drying device and a pyrolysis reactor; The drying device is used for scattering and drying the adsorption material to be treated; the dust collection device is communicated with the dryer and is used for collecting the scattered and dried reaction system; The preheating device is communicated with the dust collection device and is used for preheating the reaction system; The external circulation type pyrolysis reactor is communicated with the preheating device and is used for providing pyrolysis conditions and pyrolyzing materials entering the reaction system; The suspension cooling device is communicated with the external circulation type pyrolysis reactor and is used for providing rapid cooling conditions and rapidly cooling products out of the reaction system; The finished product bin is connected with the suspension cooling device and is used for collecting and cooling solid-phase products subjected to pyrolysis; And the heat source is used for providing a heat source for the drying device and the pyrolysis reactor.

Description

Regeneration treatment method for organic matter adsorption material Technical Field The invention relates to the technical field of adsorption material treatment, in particular to a regeneration treatment method of an organic adsorption material. Background Along with the continuous acceleration of the industrialization process, the method is widely applied to adsorption materials (such as activated carbon, molecular sieves and the like) in industrial wastewater and waste gas treatment, and the adsorption materials are deactivated due to adsorption saturation after a certain period of use, so that the adsorption materials need to be replaced or regenerated. The existing regeneration method mainly comprises the modes of hot air regeneration, steam regeneration, microwave regeneration, vacuum regeneration, water washing, medicament treatment and the like, and generally has the problems of high energy consumption, long treatment time, easiness in causing secondary pollution, low efficiency and the like. In addition, the adsorption material is easy to damage at high temperature, so that the repeated utilization rate is low and the operation cost is high. Therefore, development of the pyrolysis regeneration method and system of the recyclable adsorption material, which are efficient, energy-saving and environment-friendly, has important practical significance so as to realize sustainable recycling of the adsorption material. Disclosure of Invention The invention provides a regeneration treatment method of an organic matter adsorption material, which is used for solving the problem that the regeneration treatment efficiency of the adsorption material is not ideal in the prior art. The invention provides a regeneration treatment method of an organic matter adsorbing material, which comprises the steps of scattering and drying the adsorbing material to be treated at 400-600 ℃, preheating, carrying out pyrolysis reaction at 800-1100 ℃ to obtain a high-temperature gas-solid mixed phase, carrying out gas-solid separation on the high-temperature gas-solid mixed phase, rapidly cooling a solid phase, and re-entering the scattering and drying operation after heat exchange of the gas phase so as to recycle the solid phase, namely the treated adsorbing material. As a possible implementation, the break-up drying is performed in a drying device, and/or the preheating is performed in a preheating device, and/or the pyrolysis reaction is performed in an external circulation pyrolysis reactor, and/or the rapid cooling is performed in a suspension cooling device, and/or the solid-phase finished product bin. As a possible implementation mode, the preheating device consists of a 1-3-level cyclone heat exchanger, and the preheating mode is that the preheating is performed through high-temperature inert gas. As a possible implementation manner, during the pyrolysis reaction, the bottom of the external circulation type pyrolysis reactor generates anaerobic smoke dust with the temperature of 800-1100 ℃ through a pyrolysis blast furnace, and the temperature of the top of the external circulation type pyrolysis reactor is 600-900 ℃. As a possible implementation mode, the suspension cooling device contains low-temperature inert gas, the rapid cooling mode is a suspension air cooling mode, and the temperature of the low-temperature inert gas is raised to 200-500 ℃ after heat exchange. As a possible implementation manner, the high-temperature inert gas and the low-temperature inert gas are any one or a combination of a plurality of raw gas, nitrogen and carbon dioxide. As a possible implementation, the pyrolysis product temperature is <80 ℃ after the rapid cooling operation, and/or the gas phase is 200-500 ℃ after heat exchange. As a possible implementation mode, after the scattering and drying, the reaction system is collected through a dust collecting device under the carrying of flue gas, wherein the oxygen volume content in the flue gas is 0-1%, the flue gas is discharged after being treated, the temperature is less than 85 ℃ and the dust concentration is less than 10 mg/Nm 3 during the discharge. In a second aspect, the invention provides a system for regenerating an adsorbing material, which is used for realizing the method for regenerating the adsorbing material in any possible implementation manner in the first aspect, and comprises a drying device, a dust collecting device, a preheating device, an external circulation type pyrolysis reactor, a suspension cooling device and a heat source, wherein the drying device is used for scattering and drying the adsorbing material to be treated, the dust collecting device is communicated with the drying machine and used for collecting a reaction system subjected to scattering and drying, the preheating device is communicated with the dust collecting device and used for preheating the reaction system, the external circulation type pyrolysis reactor is communicated with the preheating device an