CN219482210U - Biological washing tower based on old packed tower transformation - Google Patents

Abstract

The utility model discloses a biological washing tower based on the transformation of an old packed tower in the field of organic waste gas treatment, which comprises an old packed tower used for transformation, wherein a new tower section is fixedly arranged at the bottom of the old packed tower, a spraying unit is arranged in the old packed tower, and an overhaul platform capable of stably trampling is arranged below the spraying unit; an injection water pipe unit arranged at the outer side is arranged between the old packed tower and the new tower section; the lower end of the new tower section is provided with double independent water tanks which are respectively connected with different water injection pipe units. The utility model improves the old packed tower, has the advantages of small modification, more utilization, low equipment investment cost, safety and reliability, is convenient to maintain and overhaul, saves energy and reduces emission, and has high-efficiency purifying effect.

Description

Biological washing tower based on old packed tower transformation

Technical Field

The utility model relates to the field of organic waste gas treatment, in particular to a biological washing tower based on the transformation of an old packed tower.

Background

The organic waste gas discharged from chemical industry, pharmaceutical industry, fermentation industry and the like has complex components, mainly takes alcohols, ketones, esters and aldehydes as main substances, and has the characteristics of complex waste gas components, large air quantity, large moisture content, acidity and peculiar smell. Before the waste gas enters the adsorbent for adsorption, the waste gas is pretreated to remove biochemical components, acidic components, water-soluble components and the like in the waste gas, so that the load of the rear-end activated carbon is reduced, and the standard emission is ensured.

In the prior art, part of factories are only provided with a packed tower for pretreatment of the waste gas, and when activated sludge is adopted as absorption liquid, the packing is blocked. The biological washing tower absorption liquid can fully utilize the dominant resources in the aerobic system of the sewage treatment station, takes the aerobic activated sludge in the aeration tank as the biological washing tower absorption liquid, and fully utilizes the alkalinity, the adsorption performance and rich active strains thereof to adsorb and biodegrade the waste gas to be treated. Therefore, in order to improve the purification efficiency of the waste gas and reduce the investment based on the principle of utilizing the old as much as possible, a scheme for modifying a packed tower in a factory into a biological washing tower is proposed.

At present, a packing layer is removed from a packing tower, and the packing tower is transformed into a spray empty tower. The biological washing tower is modified aiming at the packed tower, and no related technical method is described. The connection of the tower body of the old packed tower and the new tower section is a key link of transformation.

The filler tower is modified into a biological washing tower, so that the old filler tower is utilized as much as possible, the modification is reduced, and the investment is reduced; the safety and reliability of the equipment are ensured, and the maintenance and the overhaul are convenient; meanwhile, the utility model ensures high purification efficiency, energy conservation and emission reduction (reduces water consumption), and is a problem to be solved.

At present, a single water tank design is adopted in a washing tower in the market, circulating water in the tower tends to be saturated after the washing tower runs for a certain time, and the treatment efficiency can be ensured after water is required to be changed. The treatment efficiency of the tower equipment cannot be guaranteed in the process of changing water without stopping, and the consumption of tap water is large. The novel independent double-water-tank spray tower of the patent 202210332657.2 is designed with two independent water tanks, so that the problem is solved. The modified biological washing tower adopts a novel independent double-water tank spray tower, so that the high-efficiency purification efficiency of the biological washing tower and the energy conservation and emission reduction (water consumption reduction) of the biological washing tower are ensured. In the novel independent double-water-tank spray tower of the patent 202210332657.2, an injection water pipe is arranged in the tower, a pneumatic actuating mechanism of the pneumatic switching valve is easily damaged by waste gas, the service life is shortened, and the pneumatic switching valve is inconvenient to maintain. The utility model optimizes the design of the injection water pipe and solves the problem.

In addition, the maintenance platform only sets up a well word supporting beam in the conventional tower, and the maintainer can not directly trample, has the potential safety hazard. The utility model optimizes the design of the overhaul platform in the tower and solves the problem.

The utility model provides a scheme of a biological washing tower based on the transformation of an old packed tower, which has the advantages of small transformation, great utilization of old packed tower, low equipment investment cost, safety, convenient maintenance and overhaul, energy conservation and emission reduction, and high-efficiency purification effect.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a biological washing tower based on the transformation of an old packed tower.

The utility model is realized by adopting the following technical scheme: the biological washing tower comprises an old filling tower for transformation, wherein a new tower section is fixedly arranged at the bottom of the old filling tower, an exhaust gas inlet is formed in the periphery of the old filling tower, an exhaust gas outlet is formed in the top of the old filling tower, a filling defogging layer and a defogging flushing unit are arranged at the upper position in the old filling tower, a spraying unit is arranged in the old filling tower, and a treading maintenance platform is arranged below the spraying unit;

the tower bottom plate is arranged at the junction of the old packed tower and the new tower section, an outer side injection water pipe unit capable of communicating the old packed tower and the new tower section is arranged on the tower bottom plate, the injection water pipe unit comprises a connecting pipe for connecting a drainage interface and a water inlet interface, a pneumatic switching valve is arranged on the injection water pipe unit, and the pneumatic switching valve is arranged outside the tower body;

the lower end of the new tower section is provided with a double independent water tank, the double independent water tanks are respectively connected with different injection water pipe units, and the double independent water tanks are provided with an aeration system.

Furthermore, two layers of spraying units are arranged below the filler defogging layer, each layer of spraying unit is correspondingly matched with an overhaul platform, each overhaul platform is correspondingly provided with a spraying access door, a spray head of the spraying unit is an eddy spray head, and a spraying pipeline matched with the spraying unit is arranged in a quick-dismantling structure; each spray unit is matched with one overhaul platform, so that subsequent overhaul and maintenance are facilitated.

Further, the spray access door comprises a primary spray access door and a secondary spray access door, and the lower parts of the primary spray access door and the secondary spray access door correspond to an access platform respectively.

Further, the maintenance platform is including welding the well word supporting beam in the old packing tower, lay annular band iron between well word supporting beam and the old packing tower, the welding has horizontal and vertically stiffening beam on the well word supporting beam, the spot welding has diamond net on the maintenance platform, and diamond net tiling is in on the mesa of maintenance platform has improved the stability of maintenance platform, prevents to appear the potential safety hazard during maintenance.

Further, a vent pipe for communicating the gas of the old packed tower and the gas of the new tower section is arranged on the tower bottom plate, and the vent pipe is provided with a 180-degree elbow pipe.

Further, the old packing tower and the new tower section are welded into a whole through an annular plate, the outer diameter of the annular plate is larger than that of the old packing tower, one end of the annular plate is welded on a tower bottom plate of the old packing tower, the other end of the annular plate is welded on the new tower section, rib plates are uniformly distributed on the outer wall of the tower body, the upper ring rib plates and the lower ring rib plates distributed on the annular plate are aligned one by one, and the effect of reinforcing the outer wall is achieved through the rib plates.

Further, the drainage interface is arranged above the tower bottom plate, the water inlet interface is arranged on the new tower section, the drainage interface is connected with the pneumatic switching valve through a flange, and the water inlet interface is connected with the connecting pipe through a flange.

Further, the double independent water tanks comprise two independent circulating water tanks and a treatment system, and the new tower section is connected to the base.

Further, a lower access door is arranged on one side of the bottom of the old packed tower, and a top access door is arranged on one side of the upper part of the old packed tower.

Furthermore, the injection water pipe units are provided with at least an even number, the even number of injection water pipe units are respectively matched with different double independent water tanks correspondingly, the connecting pipe is arranged in a U-shaped mode with an inward opening, and the water inlet connector is fixedly welded with the water pipe in the tower extending to the inner side of the new tower section.

Advantageous effects

The utility model adopts the following steps:

1. the novel independent double-water tank spray tower ensures the high-efficiency purification efficiency of the biological washing tower, energy conservation and emission reduction;

2. in the design of the cross supporting beam, a transverse and vertical stiffening beam, an annular flat iron and a diamond-shaped net structure are added, so that the stability of the overhaul platform is improved;

3. the safety distance is set between the maintenance platform and the spraying unit above the maintenance platform to ensure enough maintenance space, safety and convenience in maintenance;

4. the injection water pipe unit adopts an optimal design, the pneumatic switching valve is arranged outside the tower body, the service life of the pneumatic switching valve is prolonged, and the pneumatic switching valve is convenient to maintain and overhaul;

5. the structural strength of the tower body is guaranteed by the design mode of connecting the upper tower section with the lower tower section, and the stress requirement is met.

The utility model improves the old packed tower, has the advantages of small modification, more utilization, low equipment investment cost, safety and reliability, is convenient to maintain and overhaul, saves energy and reduces emission, and has high-efficiency purifying effect.

Drawings

FIG. 1 is a schematic diagram of the internal structure of an old packed tower prior to modification.

Fig. 2 is a schematic diagram of the whole structure of the modified utility model.

Fig. 3 is a schematic top view of the service platform disposed within an old packed tower.

Fig. 4 is a schematic structural view of the installation of the injection pipe unit.

Fig. 5 is an enlarged schematic view of the connection between the old packed tower and the new tower section.

In the figure: 1. old packed tower; 2. a new tower section; 101. a tower bottom plate; 102. an exhaust gas inlet; 103. an exhaust gas outlet; 104. a lower access door; 105. a top access door; 106. a filler defogging layer; 107. a defogging flushing unit; 31. a first-stage spray access door; 32. a secondary spray access door; 4. an injection water pipe unit; 401. a drain port; 402. a pneumatic switching valve; 403. a connecting pipe; 404. a water inlet port; 405. a water pipe in the tower; 5. a vent pipe; 6. an annular plate; 7. rib plates; 8. 801, a cross support beam; 802. a stiffening beam; 803. annular flat iron; 804. a diamond mesh; 9. a spraying unit; 21. a base; 22. double independent water tanks.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, the present utility model provides a technical scheme of a biological scrubber based on old packed tower modification: a biological washing tower based on old packed tower transformation is formed by transforming an old packed tower, wherein the transformed biological washing tower is composed of an upper section and a lower section, the upper section is an old packed tower 1, and the lower section is a new tower section 2.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an old packing tower in the prior art, and the old packing tower is originally provided with two packing layers, a packing demisting layer, two packing spraying units and a demisting flushing unit. The modification content of the old packed tower comprises the following steps:

1. the two-layer packing support is removed, the two-layer packing is removed, and the upper packing demister layer 106 and the demisting flushing unit 107 are reserved.

2. And dismantling two layers of filling spraying units, adding two layers of spraying units 9, wherein the spray heads adopt vortex spray heads, and the corresponding spraying pipelines adopt a quick-dismantling design.

3. Two layers of overhaul platforms 8 are additionally arranged, and the overhaul platforms can be trampled, so that the daily overhaul is convenient. The maintenance platform is 1900mm away from the spraying unit above, so that enough maintenance space is ensured.

4. The lower access door 104 and the top access door 105 are unchanged. The two access doors at the filler layer move downwards, and the center of the primary spraying access door 31 and the center of the secondary spraying access door 32 after the displacement are 500mm away from the access platform below the two access doors.

5. The tower bottom plate 101 is provided with a round hole, a vent pipe 5 is welded, the vent pipe 5 is provided with a 180-degree elbow pipe, the gas communication between the upper tower section and the lower tower section is ensured, and water leakage is avoided. The lower new tower section 2 comprises a base 21 and a double independent water tank 22.

Wherein, two independent water tanks 22 design description: 1. the double independent water tank 22 comprises two independent circulating water tanks and a liquid discharging/feeding system (referred to as a treatment system above), and pipelines in the double independent water tank 22 can be switched, so that the problem of low removal efficiency caused by single water tank dilution type liquid exchange is avoided, and the double independent water tank has the function of continuously replacing washing liquid without stopping. 2. The aeration system is arranged in the double independent water tanks, the circulating liquid containing the activated sludge in the water tanks is continuously aerated in an air blowing mode, so that oxygen required by the activated sludge is ensured, higher biological activity of the activated sludge is ensured, and the conditions of low system treatment efficiency and equipment blockage caused by sludge deposition can be prevented.

Referring to fig. 1 and 4, the modified biological washing tower is provided with two layers of spraying units 9 and a layer of filler defogging layer 106, when in use, organic waste gas to be treated enters the tower body from the waste gas inlet 102, the waste gas rises in the tower and contacts with absorption liquid, and aerobic activated sludge is used as the absorption liquid of the biological washing tower, so that the alkalinity, adsorption performance and abundant active bacteria of the aerobic activated sludge are fully utilized to adsorb and biodegrade the waste gas to be treated. The exhaust gas stays in the spray layer of the spray unit 9 for about 3 seconds. The purified waste gas is defogged by the filler defogging layer 106 and then discharged out of the tower body through the waste gas outlet 103. A demisting flushing unit 107 is arranged above the filler demisting layer 106 and is used for flushing the filler demisting layer periodically. The absorption liquid after the contact reaction with the exhaust gas falls onto the bottom plate 101 and flows to the double independent water tanks 22 through the injection pipe unit 4 for treatment. 2 water injection pipe units 4 matched with the double independent water tanks 22 are arranged.

Referring to fig. 3, the cross support beam 801 in the embodiment adopts channel steel, the stiffening beam 802 adopts angle steel, and the installation process is as follows: the cross beam 801, the reinforcement beam 802 (the vertical reinforcement beam is welded first and then the horizontal reinforcement beam is welded), the annular flat iron 803 and the diamond net 804 are welded in this order. In the installation process, the upper planes of the channel steel and the angle steel are flush, and the annular flat iron 803 is paved on the channel steel; the diamond-shaped net 804 is spot-welded on the section bar support, and the contact parts with the section bar are all required to be spot-welded, so that the welding is firm, and no false welding, missing welding or penetrating welding is required.

Referring to fig. 4, the lower part of the new tower section 2 in the embodiment is provided with a double independent water tank 22, and two water injection pipe units 4 are provided, and the spray liquid flows into the double independent water tank 22 through the control of a pneumatic switching valve 402. The water draining interface 401 is arranged above the tower bottom plate 101, the water inlet interface 404 is arranged on the new tower section 2, the water draining interface 401 is connected with the pneumatic switching valve 402 through a flange, and the water inlet interface 404 is connected with the connecting pipe 403 through a flange. The water pipe 405 in the tower is welded with the water inlet 404 of the tower wall, and the height of the water pipe 405 in the tower from the bottom plate of the double independent water tanks 22 is 300-450mm.

Referring to fig. 5, the installation mode of the annular plate in the embodiment is as follows: the annular plate 6 is welded on the bottom plate 101 of the old packed tower, and the new tower section 2 is welded with the annular plate 6. The rib plates 7 are uniformly distributed along the outer wall of the tower for a circle, and the annular plate upper ring rib plates and the annular plate lower ring rib plates are aligned one by one. Thereby achieving the purpose of reforming the old packed tower, and the design of the reformed biological washing tower has more advantages.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (10)

1. Biological scrubbing tower based on old packed tower transformation, including old packed tower (1) that are used for transformation, its characterized in that: the novel tower section (2) is fixedly arranged at the bottom of the old packing tower (1), an exhaust gas inlet (102) is formed in the periphery of the old packing tower (1) inwards, an exhaust gas outlet (103) is formed in the top of the old packing tower, a packing defogging layer (106) and a defogging flushing unit (107) are arranged at the upper position in the old packing tower (1), a spraying unit (9) is arranged in the old packing tower (1), and a maintenance platform (8) capable of stably treading is arranged below the spraying unit (9);

the novel tower is characterized in that a tower bottom plate (101) is arranged at the junction of the old packed tower (1) and the new tower section (2), an outer side injection water pipe unit (4) capable of communicating the old packed tower (1) and the new tower section (2) is arranged on the tower bottom plate (101), the injection water pipe unit (4) comprises a connecting pipe (403) used for connecting a drainage interface (401) and a water inlet interface (404), a pneumatic switching valve (402) is arranged on the injection water pipe unit (4), and the pneumatic switching valve (402) is arranged outside a tower body;

the lower end of the new tower section (2) is provided with a double independent water tank (22), the double independent water tank (22) is respectively connected with different injection water pipe units (4), and the double independent water tank (22) is provided with an aeration system.

2. The biological scrubber adapted based on old packed tower according to claim 1, wherein: the filler defogging machine is characterized in that two layers of spraying units (9) are arranged below the filler defogging layer (106), each layer of spraying units (9) is correspondingly matched with an overhaul platform (8), each overhaul platform (8) is correspondingly provided with a spraying access door respectively, a spray head of each spraying unit (9) is an eddy spray head, and a spray pipeline matched with each spraying unit (9) is arranged in a quick-dismantling structure.

3. A biological scrubber adapted based on old packed columns according to claim 2, characterized in that: the spray access door comprises a primary spray access door (31) and a secondary spray access door (32), and the lower parts of the primary spray access door (31) and the secondary spray access door (32) respectively correspond to one access platform (8).

4. The biological scrubber adapted based on old packed tower according to claim 1, wherein: the overhaul platform (8) comprises a cross support beam (801) welded in the old packing tower (1), annular flat irons (803) are paved between the cross support beam (801) and the old packing tower (1), transverse and longitudinal stiffening beams (802) are welded on the cross support beam (801), and diamond-shaped nets (804) are paved on the table top of the overhaul platform (8).

5. The biological scrubber adapted based on old packed tower according to claim 1, wherein: and a vent pipe (5) for communicating the gas of the old packed tower (1) and the new tower section (2) is arranged on the tower bottom plate (101), and the vent pipe (5) is provided with a 180-degree elbow pipe.

6. The biological scrubber adapted based on old packed tower according to claim 1, wherein: the novel tower is characterized in that the old packing tower (1) and the new tower section (2) are welded into a whole through an annular plate (6), the outer diameter of the annular plate (6) is larger than that of the old packing tower (1), one end of the annular plate (6) is welded on a tower bottom plate (101) of the old packing tower (1), the other end of the annular plate is welded on the new tower section (2), rib plates (7) are uniformly distributed on the outer wall of the tower body, and the upper ring rib plates and the lower ring rib plates which are distributed on the annular plate (6) are aligned one by one.

7. The biological scrubber adapted based on old packed tower according to claim 1, wherein: the water draining interface (401) is arranged above the tower bottom plate (101), the water inlet interface (404) is arranged on the new tower section (2), the water draining interface (401) is connected with the pneumatic switching valve (402) through a flange, and the water inlet interface (404) is connected with the connecting pipe (403) through a flange.

8. The biological scrubber adapted based on old packed tower according to claim 1, wherein: the double independent water tanks (22) comprise two independent circulating water tanks and a treatment system, and the new tower section (2) is connected to the base (21).

9. The biological scrubber adapted based on old packed tower according to claim 1, wherein: a lower access door (104) is arranged on one side of the bottom of the old packed tower (1), and a top access door (105) is arranged on one side of the upper part of the old packed tower.

10. The biological scrubber adapted based on old packed tower according to claim 1, wherein: the water inlet connector (404) is welded and fixed with a water pipe (405) in the tower, which extends to the inner side of the new tower section (2).