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CN-224221096-U - Moving bed drip filtration alkaline washing pool

CN224221096UCN 224221096 UCN224221096 UCN 224221096UCN-224221096-U

Abstract

The utility model relates to a moving bed drip-filtration alkaline washing tank which comprises a tower body, wherein a filler bed, a first cavity and a second cavity which are communicated with the filler bed are arranged in the tower body, an air outlet pipeline is communicated with the second cavity and used for discharging air in the second cavity, a filler return pipeline is arranged, an inlet of the filler return pipeline is communicated with the bottom of the filler bed, an outlet of the filler return pipeline extends into the first cavity, a first pump body is arranged on the filler return pipeline, an inlet of the spray pipeline is communicated with the second cavity, an outlet of the spray pipeline extends into the first cavity, the spray pipeline can be sprayed into the first cavity by utilizing washing liquid in the second cavity, a second pump body is arranged on the spray pipeline, a sludge discharge pipeline is communicated with the second cavity, and sludge in the second cavity can be discharged from the sludge discharge pipeline. Thus, the moving bed trickling filtration alkaline washing tank according to the utility model can reduce the phenomenon of filler scaling.

Inventors

  • GUO WENYAN
  • YU XU

Assignees

  • 帕克环保技术(上海)有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (10)

  1. 1. A moving bed drip filtration alkaline wash basin, comprising: The tower body is internally provided with a packed bed, a first cavity and a second cavity which are communicated with the packed bed, wherein the first cavity, the packed bed and the second cavity are sequentially arranged from top to bottom, and the packed bed is internally provided with a filler; The air inlet pipeline is communicated with the inlet of the first cavity and is used for introducing gas to be treated into the first cavity; The air outlet pipeline is communicated with the second cavity and is used for discharging the air in the second cavity; The inlet of the filler return pipeline is communicated with the bottom of the filler bed, the outlet of the filler return pipeline stretches into the first cavity, a first pump body is arranged on the filler return pipeline, and the filler return pipeline is matched with the first pump body to enable filler at the bottom of the filler bed to be introduced into the first cavity; The inlet of the spraying pipeline is communicated with the second cavity, the outlet of the spraying pipeline stretches into the first cavity, the spraying pipeline can be used for leading the washing liquid in the second cavity into the first cavity for spraying, and a second pump body is arranged on the spraying pipeline; the sludge discharge pipeline is communicated with the second cavity, and sludge in the second cavity can be discharged from the sludge discharge pipeline.
  2. 2. The moving bed drip alkaline washing tank according to claim 1, wherein a disperser is arranged in the first cavity, at least part of the top surface of the disperser is a conical surface with a diameter increasing downwards, and the outlet of the filler return pipeline is positioned right above the disperser.
  3. 3. The moving bed drip-filtration alkaline washing tank according to claim 1, wherein a reflux liquid storage tank is arranged in the first cavity, washing liquid discharged from the filler reflux pipeline can be introduced into the reflux liquid storage tank, and an outlet of the reflux liquid storage tank is communicated with the bottom of the filler bed through a filler reflux flushing pipeline.
  4. 4. The moving bed drip-filtration alkaline washing pool according to claim 1, wherein a packing bed bottom flushing pipeline communicated with the spraying pipeline is arranged on the spraying pipeline, and an outlet of the packing bed bottom flushing pipeline extends into the bottom of the packing bed.
  5. 5. A moving bed drip-filtration alkaline washing tank as claimed in claim 1, wherein, The tower body is provided with a liquid level meter which is used for monitoring the liquid level of the washing liquid in the second cavity; The spray pipe is provided with a spray liquid discharge pipeline communicated with the spray pipe, the spray liquid discharge pipeline is provided with a spray liquid discharge valve, the spray liquid discharge valve is electrically connected with the liquid level meter, and when the liquid level of the washing liquid in the second cavity is greater than or equal to a first preset value, the spray liquid discharge valve is opened so that the spray liquid discharge pipeline is used for discharging the washing liquid.
  6. 6. The moving bed drip alkaline washing tank as claimed in claim 1, wherein a washing liquid discharge pipeline communicated with the second cavity is arranged on the tower body, and the washing liquid in the second cavity can be discharged from the washing liquid discharge pipeline.
  7. 7. A moving bed drip-filtration alkaline washing tank as claimed in claim 1, wherein, The inlet of the filler return line extends upwardly into the filler bed from within the second cavity so that filler within the filler bed can enter the inlet of the filler return line; The spray pipe is provided with a filler return flushing pipeline communicated with the spray pipe, an outlet of the filler return flushing pipeline extends into the second cavity and is communicated with the filler return pipeline, and the filler return flushing pipeline is used for flushing the filler return pipeline.
  8. 8. A moving bed drip-filtration alkaline washing tank as claimed in claim 1, wherein, The tower body is provided with a water supplementing pipeline communicated with the second cavity, and the water supplementing pipeline is provided with a third pump body; and/or the spraying pipeline is provided with a washing liquid supplementing pipeline communicated with the spraying pipeline.
  9. 9. A moving bed drip-filtration alkaline washing tank as claimed in claim 1, wherein, The spray pipeline comprises a first pipe section and a second pipe section, and the second cavity, the first pipe section, the second pump body, the second pipe section and the first cavity are communicated in sequence; The spray pipeline is provided with a pH measuring pipeline, an inlet of the pH measuring pipeline is communicated with the second pipe section, an outlet of the pH measuring pipeline is communicated with the first pipe section, and the pH measuring pipeline is provided with a pH meter; The tower body is provided with an alkali adding pipeline communicated with the second cavity, the alkali adding pipeline is used for introducing pH value regulating liquid into the second cavity, the alkali adding pipeline is provided with a fourth pump body, and the fourth pump body is electrically connected with the pH meter.
  10. 10. The moving bed drip filter alkaline wash basin of claim 1, wherein the inlet line communicates with the outlet line through a bypass line.

Description

Moving bed drip filtration alkaline washing pool Technical Field The utility model relates to the technical field of waste gas purification, in particular to a moving bed drip-filtration alkaline washing tank. Background Fixed bed caustic wash units such as trickling filters, scrubbers, and strippers are often used to remove acid gases from gas streams. However, in actual operation, the inorganic salt content in the washing liquid gradually rises, if the discharge is not in time, the filler scaling is caused under the continuous operation condition, the gas flow passage resistance is increased sharply, the pressure drop of the system is obviously increased, when the situation is deteriorated to a certain degree, the reactor is even completely blocked, and the operation can only be interrupted at that time, so that the equipment is maintained by opening the tower. Frequent start-stop maintenance operations not only greatly increase maintenance cost, but also cause a series of problems such as unplanned shutdown of the processing system. Disclosure of utility model The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an embodiment of the utility model proposes a moving bed drip-filtration alkaline wash basin. The moving bed drip-filtration alkaline washing tank provided by the embodiment of the utility model comprises: The tower body is internally provided with a packed bed, a first cavity and a second cavity which are communicated with the packed bed, wherein the first cavity, the packed bed and the second cavity are sequentially arranged from top to bottom, and the packed bed is internally provided with a filler; The air inlet pipeline is communicated with the inlet of the first cavity and is used for introducing gas to be treated into the first cavity; The air outlet pipeline is communicated with the second cavity and is used for discharging the air in the second cavity; The inlet of the filler return pipeline is communicated with the bottom of the filler bed, the outlet of the filler return pipeline stretches into the first cavity, a first pump body is arranged on the filler return pipeline, and the filler return pipeline is matched with the first pump body to enable filler at the bottom of the filler bed to be introduced into the first cavity; The inlet of the spraying pipeline is communicated with the second cavity, the outlet of the spraying pipeline stretches into the first cavity, the spraying pipeline can be used for leading the washing liquid in the second cavity into the first cavity for spraying, and a second pump body is arranged on the spraying pipeline; the sludge discharge pipeline is communicated with the second cavity, and sludge in the second cavity can be discharged from the sludge discharge pipeline. Therefore, the moving bed drip-filtration alkaline washing tank according to the embodiment of the utility model can reduce the phenomenon of filler scaling. In some embodiments, a disperser is disposed in the first cavity, at least a portion of the top surface of the disperser is a conical surface with a diameter increasing downwards, and the outlet of the filler return line is located directly above the disperser. In some embodiments, a reflux liquid storage tank is arranged in the first cavity, the washing liquid discharged by the filler reflux pipeline can be introduced into the reflux liquid storage tank, and the outlet of the reflux liquid storage tank is communicated with the bottom of the filler bed through a filler reflux flushing pipeline. In some embodiments, the spray pipe is provided with a packed bed bottom flushing pipe communicated with the spray pipe, and an outlet of the packed bed bottom flushing pipe extends into the bottom of the packed bed. In some embodiments, a liquid level meter is arranged on the tower body, and the liquid level meter is used for monitoring the liquid level of the washing liquid in the second cavity; The spray pipe is provided with a spray liquid discharge pipeline communicated with the spray pipe, the spray liquid discharge pipeline is provided with a spray liquid discharge valve, the spray liquid discharge valve is electrically connected with the liquid level meter, and when the liquid level of the washing liquid in the second cavity is greater than or equal to a first preset value, the spray liquid discharge valve is opened so that the spray liquid discharge pipeline is used for discharging the washing liquid. In some embodiments, a washing liquid discharge pipeline communicated with the second cavity is arranged on the tower body, and the washing liquid in the second cavity can be discharged from the washing liquid discharge pipeline. In some embodiments, the inlet of the packing return line extends upwardly into the packed bed from within the second cavity so that packing within the packed bed can enter the inlet of the packing return line; The spray pipe is provided with