CN218924318U - Doublestage hydrochloric acid absorption tower - Google Patents

Abstract

The utility model relates to a two-stage hydrochloric acid absorption tower, which comprises a first-stage absorption tower and a second-stage absorption tower, wherein the first-stage absorption tower and the second-stage absorption tower have the same structure, a liquid storage tank is arranged at the position, close to the bottom end, of the outer side of the first-stage absorption tower, a through hole is formed in the liquid storage tank, through the through hole, a first filter component is arranged in the through hole, and a second filter component is arranged at the position, close to the bottom end, of an inner cavity of the first-stage absorption tower; the first filter assembly comprises a filter screen and a sealing plate, and the second filter assembly comprises a filter bucket and a scraping plate; according to the utility model, through the cooperation of the scraper, the ball and the elastic rope and the nylon rope, after the spray liquid and the smoke are mixed and fall onto the filter bucket, the impurities with larger particles in the smoke can be effectively filtered, the impurities are prevented from being mixed into the spray liquid, the impurities are effectively collected through the arrangement of the turnup part of the filter bucket, and the arrangement of the discharge port is matched, so that the later cleaning of staff is more convenient.

Description

Doublestage hydrochloric acid absorption tower

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to a two-stage hydrochloric acid absorption tower.

Background

In practical operation, if one hydrochloric acid absorption tower can not completely neutralize the acidity in the waste gas after treatment, people can adopt two-stage linkage, and the treated waste gas is subjected to secondary treatment through two hydrochloric acid absorption towers, so that the exhaust gas reaches the emission standard.

When the existing two-stage hydrochloric acid absorption tower is used, one side of the existing two-stage hydrochloric acid absorption tower is provided with a liquid storage tank for storing sodium hydroxide solution, so that spraying is convenient, liquid which is neutralized with hydrochloric acid after spraying is stored at the bottom end part of an inner cavity of the absorption tower, but water resources are wasted after the liquid is discharged due to limited volume of the bottom end of the absorption tower, the bottom end of the absorption tower is communicated with the inner cavity of the liquid storage tank to form circulating spraying generally, and a proper amount of sodium hydroxide is continuously added after the liquid is saturated, so that the alkalinity is recovered; however, since the flue gas contains hydrochloric acid and some water-insoluble particle impurities, and the existing absorption tower lacks filtering measures for recycling liquid when in use, part of impurities are sucked into the spray head to block the spray head, so that the spray water curtain can produce loopholes on the flue gas, and the flue gas is not thoroughly purified, a two-stage hydrochloric acid absorption tower capable of effectively filtering the circulating liquid and preventing blockage is required to be designed to solve the problems.

Disclosure of Invention

Based on the above description, the utility model provides a two-stage hydrochloric acid absorption tower, which aims to solve the problem that the existing two-stage hydrochloric acid absorption tower lacks a filtering component when using circulating liquid, and is easy to cause nozzle blockage.

The technical scheme for solving the technical problems is as follows: the two-stage hydrochloric acid absorption tower comprises a first-stage absorption tower and a second-stage absorption tower, wherein the first-stage absorption tower and the second-stage absorption tower are identical in structure, a liquid storage tank is arranged at a position, close to the bottom end, of the outer side of the first-stage absorption tower, a through hole is formed in a penetrating mode on one side, close to each other, of the liquid storage tank, a first filtering component is arranged in the through hole, and a second filtering component is arranged at a position, close to the bottom end, of an inner cavity of the first-stage absorption tower; the first filter component comprises a filter screen and a sealing plate, the second filter component comprises a filter bucket and a scraping plate, and a demisting plate, a spraying component and a screen plate are sequentially arranged in the inner cavity of the primary absorption tower from top to bottom.

On the basis of the technical scheme, the utility model can be improved as follows.

As a further improvement of the utility model, an air inlet is arranged at a position, close to the lower part of the screen plate, of the outer side of the primary absorption tower, an air outlet is arranged at the top end of the primary absorption tower, a first connecting pipe is connected to the air inlet of the primary absorption tower through an air extracting pump, an air inlet cover is arranged at one end, far away from the air inlet, of the first connecting pipe, a supporting table is arranged at the bottom end of the air extracting pump, and the air outlet of the primary absorption tower is communicated with the air inlet of the secondary absorption tower through a second connecting pipe.

As a further improvement of the utility model, the first filter assembly further comprises a mounting groove, a driving motor, a rotating rod and bristles, wherein the mounting groove is arranged between the primary absorption tower and the liquid storage tank, the driving motor is arranged in the mounting groove, a plurality of sealing plates are respectively arranged at the top end and the bottom end of the inner wall of the through hole, and the sealing plates are circular plates, and the diameters of the sealing plates are matched with the widths of the through holes.

As a further improvement of the utility model, the output shaft of the driving motor penetrates through the sealing plate and is connected with the top end of the rotating rod, a sealing bearing is arranged at the penetrating position of the output shaft of the driving motor and the sealing plate, the brush hair is uniformly arranged on the outer surface of the rotating rod, the filter screen is arranged between the sealing plates and is close to the edge, and the brush hair is contacted with the inner wall of the filter screen.

As a further improvement of the utility model, the second filter assembly further comprises balls, nylon ropes, limiting rings, fixing rings, supporting rings and elastic ropes, wherein the supporting rings are arranged at the positions, close to the bottom end of the filter bucket, of the inner wall of the primary absorption tower, the filter bucket is arranged in a conical shape, the edge, close to the bottom end, of the filter bucket is turned upwards, the turned-up position of the filter bucket is arranged in a semi-annular shape, the edge of the filter bucket is provided with hook lugs, and the two sides of the top end of the scraping plate are provided with arc-shaped protrusions matched with the hook lugs.

As a further improvement of the utility model, the two scrapers are both connected with the inner side of the turning-up position of the filter hopper in a sliding manner, the elastic rope is connected between the two sides of the two scrapers, which are close to each other, the nylon rope is arranged on the side of the two scrapers, which is far away from each other, and the two limiting rings are respectively arranged at one end of the inner side of the turning-up position of the filter hopper, which is far away from the scrapers.

As a further improvement of the utility model, the fixing ring is arranged at the position where the filter bucket is turned over and corresponds to the limiting ring, one ends of the two nylon ropes, which are far away from each other, respectively penetrate through the limiting ring and are connected and fixed with the fixing ring, and the ball is arranged at the position where the scraping plate contacts with the inner wall of the turned-over position of the filter bucket.

As a further improvement of the utility model, a discharge hole is arranged on the outer surface of the primary absorption tower near the filter bucket in a penetrating way, a sealing plug is in interference fit with the discharge hole, and a handle is arranged in the middle of the outer side of the sealing plug.

As a further improvement of the utility model, the spray assembly comprises an annular pipe, a transverse pipe, a spray head, a third connecting pipe and a centrifugal pump, wherein the annular pipe is arranged in the middle of the inner wall of the primary absorption tower, a plurality of transverse pipes are uniformly communicated between the inner sides of the annular pipe, the spray head is uniformly arranged on the bottom end surface of the transverse pipe, one side of the annular pipe is communicated with a water outlet of the centrifugal pump through the third connecting pipe, a water inlet of the centrifugal pump is communicated with the inner cavity of the liquid storage tank through the third connecting pipe, and the centrifugal pump is arranged in the middle of the top end of the liquid storage tank.

As a further improvement of the utility model, a charging port is arranged on the right side of the top end of the liquid storage tank in a penetrating way, a charging funnel is arranged at the charging port, the charging funnel is made of transparent plastic, scale marks are carved on the outer surface of the charging funnel along the vertical direction, and a movable plugboard is movably inserted at a position, close to the bottom end, of the outer side of the charging funnel.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

1. according to the utility model, through the cooperation of the scraper, the ball and the elastic rope and the nylon rope, after the spray liquid and the smoke are mixed and fall onto the filter hopper, the impurities with larger particles in the smoke can be effectively filtered, the impurities are prevented from being mixed into the spray liquid, the impurities are effectively collected through the arrangement of the turnup part of the filter hopper, and the arrangement of the discharge port is matched, so that the later cleaning of staff is more convenient;

2. meanwhile, the liquid entering the liquid storage tank is further filtered through the sealing plate matched with the filter screen, and meanwhile, the filter screen is effectively brushed by matching with the driving motor, the rotating rod and the brush hairs, so that the filter screen is prevented from being blocked;

3. finally, the transparent structure of the charging hopper is matched with the charging hopper, and the graduation marks are arranged, so that the amount of the added sodium hydroxide can be better controlled by a worker when the sodium hydroxide is added, and the concentration of alkali in the spraying liquid can be better controlled.

Drawings

FIG. 1 is a schematic view in elevation and cross-section of the overall structure of the present utility model;

FIG. 2 is a schematic view of a structure of a filter screen and a sealing plate according to the present utility model;

FIG. 3 is a schematic top view of the filter basket of the present utility model;

FIG. 4 is a schematic view showing a perspective structure of a scraper according to the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 6 is an enlarged schematic view of the structure of FIG. 1B according to the present utility model;

fig. 7 is an enlarged schematic view of the structure of fig. 1 at C according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

01. a first-stage absorption tower; 02. a secondary absorption tower; 03. a defogging plate; 031. an annular tube; 032. a transverse tube; 033. a spray head; 034. a screen plate; 04. a first connection pipe; 041. an air inlet cover; 042. a second connection pipe; 043. an air extracting pump; 044. an air inlet; 045. an exhaust port; 046. a support table; 05. a third connection pipe; 051. a centrifugal pump; 052. a liquid storage tank; 06. a charging hopper; 061. a movable plugboard; 07. a filter bucket; 071. a scraper; 0711. a ball; 072. nylon ropes; 073. a limiting ring; 074. a fixing ring; 075. a support ring; 076. an elastic rope; 08. a discharge port; 081. a sealing plug; 09. a mounting groove; 091. a drive motor; 092. a sealing plate; 093. a filter screen; 094. a rotating rod; 095. and (3) brushing.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that spatially relative terms, such as "under", "below", "beneath", "under", "above", "over" and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below" and "under" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. In the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", and the like, if the connected circuits, modules, units, and the like have electrical or data transferred therebetween.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

Referring to fig. 1-7, the utility model comprises a first-stage absorption tower 01 and a second-stage absorption tower 02, the first-stage absorption tower 01 and the second-stage absorption tower 02 have the same structure, a liquid storage tank 052 is arranged at the position, close to the bottom, of the outer side of the first-stage absorption tower 01, a through hole is formed in a penetrating way on one side, close to each other, of the liquid storage tank 052 and the first-stage absorption tower 01, a first filter component is arranged in the through hole, and a second filter component is arranged at the position, close to the bottom, of an inner cavity of the first-stage absorption tower 01; the first filter component comprises a filter screen 093 and a sealing plate 092, the second filter component comprises a filter bucket 07 and a scraper 071, and a demister plate 03, a spraying component and a screen 034 are sequentially arranged in the inner cavity of the primary absorption tower 01 from top to bottom.

Referring to fig. 1, in this embodiment, for better communicating a primary absorption tower 01 and a secondary absorption tower 02, an air inlet 044 is provided at a position, close to a lower portion of a mesh plate 034, outside the primary absorption tower 01, an air outlet 045 is provided at a top end of the primary absorption tower 01, the air inlet 044 of the primary absorption tower 01 is connected with a first connecting pipe 04 through an air pump 043, one end, far away from the air inlet 044, of the first connecting pipe 04 is provided with an air inlet hood 041, a supporting table 046 is provided at a bottom end of the air pump 043, and the air outlet 045 of the primary absorption tower 01 is communicated with the air inlet 044 of the secondary absorption tower 02 through a second connecting pipe 042 and the air pump 043, and the model of the air pump 043 is as follows: MDZ-30.

When the flue gas enters from the air inlet hood 041, the flue gas is injected into the inner cavity of the primary absorption tower 01 from the first connecting pipe 04 and the air inlet 044 by the suction force of the air pump 043, the flue gas upwards passes through the screen 034 to enter the spraying area, enters the demisting plate 03 after being purified by the spraying area, is finally discharged through the air outlet 045 at the top end, is injected into the secondary absorption tower 02 by the second connecting pipe 042 and is subjected to secondary purification by matching with the air pump 043, and is finally discharged to the outside through the air outlet 045 of the secondary absorption tower 02.

Referring to fig. 2 and 6, it should be noted that, in order to prevent the filter screen 093 from being blocked and perform the secondary filtration better, the first filter assembly further includes a mounting groove 09, a driving motor 091, a rotating rod 094 and bristles 095, the mounting groove 09 is opened between the primary absorption tower 01 and the liquid storage tank 052, the driving motor 091 is installed in the mounting groove 09, a plurality of sealing plates 092 are respectively arranged at the top end and the bottom end of the inner wall of the through hole, and the sealing plates 092 are circular plates with diameters matched with the widths of the through holes; an output shaft of the driving motor 091 penetrates through the sealing plate 092 and is connected with the top end of the rotating rod 094, a sealing bearing is arranged at the penetrating position of the output shaft of the driving motor 091 and the sealing plate 092, bristles 095 are uniformly arranged on the outer surface of the rotating rod 094, a filter screen 093 is arranged at the position between the sealing plates 092, which is close to the edge, and the bristles 095 are in contact with the inner wall of the filter screen 093.

When the liquid in the inner cavity of the primary absorption tower 01 flows into the liquid storage tank 052, the liquid can pass through the filter screen 093, the liquid is filtered for the second time through the filter screen 093, particle impurities are prevented from entering the liquid storage tank 052, meanwhile, the driving motor 091 is started, the rotating rod 094 is driven to rotate by the driving motor 091, the brush hair 095 is driven to brush the inner wall of the filter screen 093 by the rotation of the rotating rod, and the particle impurities adhered to the filter screen 093 are brushed off, so that the filter screen 093 is prevented from being blocked.

Referring to fig. 3, 4 and 5, specifically, in order to perform preliminary filtration on impurities in the spray liquid better, and facilitate cleaning by staff, the second filtering component further comprises a ball 0711, a nylon rope 072, a limiting ring 073, a fixing ring 074, a supporting ring 075 and an elastic rope 076, wherein the supporting ring 075 is arranged on the inner wall of the primary absorption tower 01 and is close to the bottom end of the filter bucket 07, the filter bucket 07 is arranged in a conical shape and is turned up at the edge close to the bottom end, the turned-up part of the filter bucket 07 is arranged in a semi-annular shape, hook lugs are arranged at the edge, and arc-shaped protrusions matched with the hook lugs are arranged on two sides of the top end of the scraper 071; the two scrapers 071 are both connected with the inner side of the turned-up position of the filter bucket 07 in a sliding way, the elastic rope 076 is connected between the sides of the two scrapers 071, which are close to each other, the elastic rope 076 is woven by terylene, the nylon rope 072 is arranged on the side of the two scrapers 071, which are far away from each other, and the limit rings 073 are respectively arranged at one end of the inner side of the turned-up position of the filter bucket 07, which is far away from the scrapers 071; the fixed ring 074 is arranged at a position corresponding to the position of the limiting ring 073 when the filter bucket 07 is turned up, one ends of the two nylon ropes 072 which are far away from each other respectively penetrate through the limiting ring 073 and are fixedly connected with the fixed ring 074, and the ball 0711 is arranged at a position where the scraper 071 contacts with the inner wall of the turned up position of the filter bucket 07; the position of the outer surface of the primary absorption tower 01, which is close to the filter bucket 07, is penetrated and provided with a discharge hole 08, a sealing plug 081 is in interference fit with the discharge hole 08, and a handle is arranged in the middle of the outer side of the sealing plug 081.

When spraying liquid sprays down, contact with flue gas and mix and fall to filter bucket 07, through the conical design of filter bucket 07, make liquid flow along filter bucket 07 outside, make the great impurity of granule all pile up the inside of the department of turning up of filter bucket 07 outside, when the staff need clear up the impurity in the filter bucket 07, grasp the handle earlier and pull out sealing plug 081, pass bin outlet 08 again and grasp nylon rope 072, utilize nylon rope 072 pulling scraper 071, make scraper 071 pass through ball 0711 in the department of turning up of filter bucket 07 and slide, and when sliding, utilize scraper 071 to concentrate the impurity to the position that is close to bin outlet 08, the staff can make the elasticity rope 076 between two scrapers 071 become elongated when pulling scraper 071, and can loosen nylon rope 072 after scraping, under the resilience of elasticity rope 076, scraper 071 can all return to original position and wait for next time use, the staff can take out from bin outlet 08.

Referring to fig. 1 and 7, in this embodiment, for better circulation of the spraying liquid and addition of sodium hydroxide, the spraying assembly includes an annular pipe 031, a horizontal pipe 032, a spray head 033, a third connecting pipe 05 and a centrifugal pump 051, the annular pipe 031 is arranged in the middle of the inner wall of the primary absorption tower 01, the horizontal pipe 032 has a plurality of nozzles which are uniformly communicated between the inner sides of the annular pipe 031, the spray head 033 has a plurality of nozzles which are uniformly arranged on the bottom end surface of the horizontal pipe 032, one side of the annular pipe 031 is communicated with a water outlet of the centrifugal pump 051 through the third connecting pipe 05, a water inlet of the centrifugal pump 051 is communicated with the inner cavity of the liquid storage tank 052 through the third connecting pipe 05, and the centrifugal pump 051 is arranged in the middle of the top end of the liquid storage tank 052; feed inlet has been offered in the penetration of liquid reserve tank 052 top right side, and feed inlet department is provided with addition funnel 06, and addition funnel 06 is transparent plastics and surface is carved with the scale mark along the vertical direction, and the position activity that addition funnel 06 outside is close to the bottom is pegged graft and is had movable picture peg 061, and this centrifugal pump 051's model is: GBF25-15.

When needs spray, start centrifugal pump 051 earlier, utilize centrifugal pump 051 to draw up the spray liquid in the liquid reserve tank 052, and pour into in the ring pipe 031 through third connecting pipe 05, pour into the spray liquid into many violently managing 032 through ring pipe 031, finally spout the spray liquid through a plurality of shower nozzles 033, because the design of ring pipe 031 and many violently managing 032, cooperate a plurality of shower nozzles 033, make the spray liquid that squirts can be better form the water curtain and carry out purification treatment to the flue gas, when the staff needs to add sodium hydroxide, can run through the volume of pouring the sodium hydroxide through the scale mark on the charging hopper 06, confirm the volume back, extract movable picture peg 061, the sodium hydroxide can fall into liquid reserve tank 052 and fuse with liquid, resume the basicity of spray liquid.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The utility model provides a doublestage hydrochloric acid absorption tower, includes primary absorption tower (01) and secondary absorption tower (02), its characterized in that:

the structure of the primary absorption tower (01) is the same as that of the secondary absorption tower (02), a liquid storage tank (052) is arranged at the position, close to the bottom, of the outer side of the primary absorption tower (01), a through hole is formed in the liquid storage tank (052) and one side, close to the primary absorption tower (01), of the liquid storage tank in a penetrating mode, a first filtering component is arranged in the through hole, and a second filtering component is arranged at the position, close to the bottom, of an inner cavity of the primary absorption tower (01);

the first filter component comprises a filter screen (093) and a sealing plate (092), the second filter component comprises a filter bucket (07) and a scraper (071), and a demisting plate (03), a spraying component and a screen plate (034) are sequentially arranged in the inner cavity of the primary absorption tower (01) from top to bottom.

2. The dual stage hydrochloric acid absorption tower of claim 1, wherein: the utility model discloses a high-efficiency absorption tower, including first level absorption tower (01), second level absorption tower (01), sucking pump (043), air inlet (044) have been seted up to the position that is close to otter board (034) below in the one-level absorption tower (01) outside, gas vent (045) have been seted up on one-level absorption tower (01) top, one-level absorption tower (01) air inlet (044) department is connected with first connecting pipe (04) through sucking pump (043), one end that air inlet (044) were kept away from to first connecting pipe (04) is provided with inlet cap (041), sucking pump (043) bottom is provided with brace table (046), through second connecting pipe (042) and sucking pump (043) intercommunication between gas vent (045) and second level absorption tower (02) air inlet (044).

3. The dual stage hydrochloric acid absorption tower of claim 1, wherein: the first filter assembly further comprises a mounting groove (09), a driving motor (091), a rotating rod (094) and bristles (095), wherein the mounting groove (09) is formed between the primary absorption tower (01) and the liquid storage tank (052), the driving motor (091) is mounted in the mounting groove (09), a plurality of sealing plates (092) are arranged at the top end and the bottom end of the inner wall of the through hole respectively, and the sealing plates (092) are circular plates, and the diameters of the circular plates are matched with the widths of the through holes.

4. The dual stage hydrochloric acid absorption tower according to claim 3, wherein: the output shaft of driving motor (091) runs through closing plate (092) and is connected with bull stick (094) top, the department of running through of driving motor (091) output shaft and closing plate (092) is provided with sealed bearing, brush hair (095) evenly set up in bull stick (094) surface, filter screen (093) set up in the position department that is close to the edge between closing plate (092), brush hair (095) and filter screen (093) inner wall contact.

5. The dual stage hydrochloric acid absorption tower of claim 1, wherein: the second filtering component further comprises balls (0711), nylon ropes (072), limiting rings (073), fixing rings (074), supporting rings (075) and elastic ropes (076), wherein the supporting rings (075) are arranged at positions, close to the bottom end of the filtering hopper (07), of the inner wall of the primary absorption tower (01), the filtering hopper (07) is arranged in a conical shape, and is upwards turned up at the edge, close to the bottom end, of the filtering hopper (07), the turning-up part of the filtering hopper (07) is semi-annular, hook lugs are arranged at the edge, and arc-shaped protrusions matched with the hook lugs are arranged on two sides of the top end of the scraping plate (071).

6. The dual stage hydrochloric acid absorption tower of claim 5, wherein: the scraper blade (071) has two and equal sliding connection in the inboard of filter funnel (07) department of turning over, elastic cord (076) connect two between the one side that scraper blade (071) is close to each other, nylon rope (072) set up in two one side that scraper blade (071) kept away from each other, spacing ring (073) have two and set up respectively in the one end that scraper blade (071) was kept away from to filter funnel (07) department inboard of turning over.

7. The dual stage hydrochloric acid absorption tower of claim 6, wherein: the fixed ring (074) is arranged at the position where the filter bucket (07) is turned up and is positioned at the position corresponding to the limiting ring (073), one ends, far away from each other, of the two nylon ropes (072) respectively penetrate through the limiting ring (073) to be connected and fixed with the fixed ring (074), and the balls (0711) are arranged at the position where the scraping plate (071) is contacted with the inner wall of the turning-up position of the filter bucket (07).

8. The dual stage hydrochloric acid absorption tower of claim 1, wherein: the position of the outer surface of the primary absorption tower (01) close to the filter bucket (07) is penetrated and provided with a discharge hole (08), the discharge hole (08) is in interference fit with a sealing plug (081), and the middle part of the outer side of the sealing plug (081) is provided with a handle.

9. The dual stage hydrochloric acid absorption tower of claim 1, wherein: the utility model provides a spray assembly includes ring pipe (031), violently pipe (032), shower nozzle (033), third connecting pipe (05) and centrifugal pump (051), ring pipe (031) set up in one-level absorption tower (01) inner wall middle part, violently pipe (032) have a plurality of and evenly communicate between ring pipe (031) inboard, shower nozzle (033) have a plurality of and evenly install in violently pipe (032) bottom surface, outlet intercommunication of third connecting pipe (05) and centrifugal pump (051) is passed through to ring pipe (031) one side, third connecting pipe (05) and liquid reserve tank (052) inner chamber intercommunication are used to the water inlet of centrifugal pump (051), centrifugal pump (051) are installed in liquid reserve tank (052) top middle part.

10. The dual stage hydrochloric acid absorption tower of claim 1, wherein: the charging hopper is characterized in that a charging port is formed in the right side of the top end of the liquid storage tank (052) in a penetrating mode, a charging hopper (06) is arranged at the charging port, scale marks are engraved on the outer surface of the charging hopper (06) in the vertical direction, and a movable plugboard (061) is movably inserted in the position, close to the bottom end, of the outer side of the charging hopper (06).

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