CN212731620U

CN212731620U - Multistage spraying washing recovery equipment

Info

Publication number: CN212731620U
Application number: CN202021453095.XU
Authority: CN
Inventors: 华刚; 刘坦
Original assignee: Suzhou Shuoguan Environmental Technology Co ltd
Current assignee: Suzhou Shuoguan Environmental Technology Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-03-19
Anticipated expiration: 2030-07-22

Abstract

The utility model relates to a multistage washing recovery plant that sprays, including a plurality of scrubbing towers of series connection in proper order, each scrubbing tower has air inlet and gas outlet, the gas outlet of preceding scrubbing tower in two adjacent scrubbing towers passes through the connecting tube with the air inlet of back scrubbing tower and links to each other, the intake pipe is connected to the air inlet of the first scrubbing tower in a plurality of scrubbing towers of series connection, the outlet duct is connected to the gas outlet of last scrubbing tower, recovery plant still includes the public pipeline, the public pipeline is respectively through a plurality of lateral conduits and intake pipe, the connecting tube between outlet duct and two adjacent scrubbing towers links to each other, be equipped with first valve on each lateral conduit. Through the setting of public pipeline, lateral conduit and valve, can realize when one of them or several scrubbing towers need to be changed the washing liquid or clear up the material or overhaul, through the trend of valve regulation gas material, accomplish the work of changing, material clearance or overhaul of washing liquid under the circumstances of not shutting down.

Description

Multistage spraying washing recovery equipment

Technical Field

The utility model belongs to the technical field of exhaust-gas treatment, concretely relates to multistage washing recovery plant that sprays for higher concentration gas material recycle can be used to each trade, trades such as chemical industry, food, oil, plastic, environmental protection.

Background

Currently, the method aims at various industries such as: the treatment process for treating and recycling the gas materials with higher concentration in the industries of chemical industry, food, petroleum, plastics and the like, particularly in the environmental protection industry aims at treating and recycling the gas materials with higher concentration, and most of the treatment equipment used at present is a condensation recycling and combustion method.

Wherein, condensation recovery, its main advantage lies in handling and recycle ratio higher when gaseous material temperature is higher. However, in order to make the temperature difference of the gas material larger, a refrigerating unit is required to be equipped, so that the equipment investment and the operation cost are high.

The combustion method has the main advantages that the gas materials are decomposed after being combusted, and the treatment efficiency is high. But can not recycle the gas materials, and the equipment investment and the operation cost are high.

For example, chinese patent CN202315673U discloses a nitrogen oxide waste gas treatment device, which comprises a first-stage washing tower, a second-stage washing tower, a third-stage washing tower and a fourth-stage washing tower connected in series in sequence, wherein a centrifugal fan is further connected in series between the third-stage washing tower and the fourth-stage washing tower. However, when the waste gas is treated, once one of the washing towers is out of order, the whole set of equipment needs to be stopped for maintenance, and the cleaning or washing liquid replacement work cannot be carried out on one of the washing towers independently.

Disclosure of Invention

The utility model aims to solve the technical problem that to current processing and recycle equipment's drawback, provide a modified multistage washing recovery plant that sprays.

For solving the technical problem, the utility model discloses a following technical scheme:

the utility model provides a multistage washing recovery plant that sprays, includes a plurality of scrubbing towers that connect gradually series connection, each the scrubbing tower has air inlet and gas outlet, two adjacent in the scrubbing tower the gas outlet of preceding one in the scrubbing tower links to each other through the connecting tube with the gas inlet of back one the scrubbing tower, the series connection the air inlet of the first scrubbing tower in a plurality of scrubbing towers connects the intake pipe, the gas outlet duct is connected to the gas outlet of last scrubbing tower, recovery plant still includes public pipeline, public pipeline respectively through a plurality of lateral conduits with intake pipe, gas outlet duct and two adjacent between the scrubbing tower the connecting tube links to each other, is equipped with first valve on each lateral conduit.

According to some implementation aspects of the utility model, each set up the second valve on the pipeline that air inlet, the gas outlet of scrubbing tower are connected respectively, each the second valve is located each the air inlet or the gas outlet of scrubbing tower and each between the pipeline that air inlet or the gas outlet of scrubbing tower are connected and the junction of lateral conduit.

According to some implementation aspects of the utility model, first valve, second valve are electronic or pneumatic governing valve respectively, recovery plant still includes control system, first valve, second valve with the control system electricity is connected.

According to some implementation aspects of the utility model, recovery plant is still including connecting be used for on the outlet duct being a plurality of the gas that the scrubbing tower was handled carries out the dry defogging device of dry defogging.

According to some implementation aspects of the utility model, the scrubbing tower sets up 4~ 10.

According to some implementation aspects of the utility model, each the scrubbing tower is including having tower body, the setting of air inlet and gas outlet are in spray unit and setting in the tower body are in tower body below and with the collection box of tower body intercommunication, spray the unit including setting up packing layer and setting in the tower body are in the packing layer top just be used for to spray the shower head of washing liquid in the tower body, each the scrubbing tower is still including connecting circulating pipe and setting between shower head and the collection box are in circulating pump on the circulating pipe.

According to some embodiment aspects of the utility model, it sets up a plurality ofly, a plurality of to spray the unit and follow the direction of height of tower body sets gradually in the tower body, each spray the unit including packing layer and shower head, the circulating pipe respectively with a plurality of spray the shower head of unit links to each other.

Preferably, the spray headers of each spray unit are provided in plurality, the spray headers are uniformly distributed in the tower body, and the spray headers are atomizing nozzles.

According to some embodiment aspects of the utility model, each the scrubbing tower is still including being used for the control the liquid level control device of liquid level in the collection box, set up on the collection box and be used for avoiding too high overflow mouth of liquid level, being used for discharging in the collection box the leakage fluid dram of liquid in the collection box, be used for to carry the liquid feeding mouth of washing liquid and be used for the observation window of observation in the collection box.

According to some embodiments of the utility model, in the aspect of the tower body bottom connection fluid-discharge tube, the tip of fluid-discharge tube stretches into below in the collection box, set up the third valve on the fluid-discharge tube, when needs maintenance equipment or when the collection box needs the flowing back, close the third valve.

According to some embodiments of the utility model aspect, the recovery plant still includes the washing liquid storage tank that is used for depositing the washing liquid, the washing liquid storage tank respectively through the pipeline with each the collection box of scrubbing tower links to each other.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a recovery plant can improve the rate of recovery of gas material through the setting of a plurality of washing towers of establishing ties, and the material medium concentration that the washing tower that is close to the front end was retrieved is highest, and the material medium concentration of the washing tower recovery of keeping away from the front end is minimum, but the washing liquid independent cycle of each washing tower uses.

The utility model discloses a recovery plant still can realize when one of them or several scrubbing towers need to be changed washing liquid or clearance material or overhaul through the setting of public pipeline, lateral conduit and valve, and the trend of accessible valve adjustment gas material pipeline accomplishes change, material clearance or the maintenance work of washing liquid under the circumstances of not shutting down.

Drawings

Fig. 1 is a schematic structural view of a multistage spray washing and recycling device according to an embodiment of the present invention.

Fig. 2 is a schematic top view of a multi-stage spray washing and recycling apparatus according to an embodiment of the present invention.

In the figure: 1. a tower body; 2. an air inlet; 3. an air outlet; 4. connecting a pipeline; 5. an air inlet pipe; 6. an air outlet pipe; 7. a common conduit; 8. a branch pipe; 9. a control system; 10. a drying and demisting device; 11. a recycling bin; 12. a filler layer; 13. a shower head; 14. a circulation pipe; 15. a circulation pump; 16. a liquid discharge pipe; 17. a wash liquor storage tank; 18. a first valve; 19. a second valve; 20. a third valve; 21. and (6) entering and exiting the personnel.

Detailed Description

The invention is further described below with reference to the drawings in the specification:

the multistage spraying washing recovery device comprises a plurality of washing towers which are sequentially connected in series, each washing tower is provided with a gas inlet 2 and a gas outlet 3 for gas materials to enter and exit, the gas outlet 3 of the previous washing tower in two adjacent washing towers is connected with the gas inlet 2 of the next washing tower through a connecting pipeline 4, the gas inlet 2 of the first washing tower in the plurality of washing towers in series is connected with a gas inlet pipe 5, and the gas outlet 3 of the last washing tower is connected with a gas outlet pipe 6.

Referring to fig. 2, the recycling equipment further comprises a common pipeline 7, the common pipeline 7 is respectively connected with an air inlet pipe 5, an air outlet pipe 6 and a connecting pipeline 4 between two adjacent washing towers through a plurality of branch pipelines 8, each branch pipeline 8 is provided with a first valve 18, a pipeline connected with an air inlet 2 and an air outlet 3 of each washing tower is respectively provided with a second valve 19, and each second valve 19 is positioned between the connecting part of the pipeline connected with the air inlet 2 or the air outlet 3 of each washing tower and the branch pipeline 8. The pipe connected with the air inlet 2 of the first washing tower in the plurality of washing towers in series is an air inlet pipe 5, a second valve 19 is arranged on the air inlet pipe 5, and the second valve 19 on the air inlet pipe 5 is positioned between the air inlet 2 of the first washing tower and the connection position of the air inlet pipe 5 and the branch pipe 8. The other second valves are not shown in the figure.

The direction of the gas materials in the pipeline can be controlled by opening and closing the plurality of first valves 18 and the plurality of second valves 19, so that the washing liquid can be replaced, the materials can be cleaned or the maintenance work can be completed on one or more washing towers under the condition of no shutdown.

In a specific embodiment, the first valve 18 and the second valve 19 can be electric or pneumatic control valves, the recycling equipment further comprises a control system 9, and the first valve 18 and the second valve 19 are electrically connected with the control system 9 and can be opened or closed under the control of the control system 9.

The recovery equipment also comprises a drying demisting device 10 which is connected with the gas outlet pipe 6 and is used for drying and demisting the gas treated by the plurality of washing towers, so that the treated gas is ensured not to carry water mist.

The number of the washing towers is 4-10, and the washing towers can be adjusted according to the gas to be treated, for example, the number of the washing towers is 8 in the embodiment.

Referring to fig. 1, each scrubbing tower is including tower body 1 that has air inlet 2 and gas outlet 3, a plurality of units that spray that the setting set gradually along the direction of height of tower body 1 in tower body 1, the liquid level control device that sets up in tower body 1 below and with the collection box 11 of tower body 1 intercommunication and be arranged in monitoring collection box 11 liquid level, each unit that sprays is including setting up packing layer 12 in tower body 1 and setting up in packing layer 12 top and be arranged in the shower head 13 that sprays the washing liquid in tower body 1, air inlet 2 sets up the lateral part at tower body 1 and is arranged in a plurality of packing layer 12's that spray the below in the unit, gas outlet 3 sets up at tower body 1 top.

The spray headers 13 of each spray unit are arranged in a plurality, the spray headers 13 are uniformly distributed in the tower body 1, and the spray headers 13 are atomizing nozzles, so that the cleaning liquid sprayed into the tower body 1 through the spray headers 13 is uniformly distributed on the packing layer 12, and the gas material medium is completely covered by the cleaning liquid.

When the device is specifically arranged, the number of the spraying units of each washing tower is not limited; the number of the spray headers 13 of each spray unit is not limited; the filler layer 12 comprises filler, a grid bracket arranged in the tower body 1 and used for placing the filler, and a fixing frame fixedly arranged with the tower body 1 and used for installing the grid bracket; a frame for mounting the spray header 13 is also arranged in the tower body 1.

The bottom of the tower body 1 is connected with a drain pipe 16, the end part of the drain pipe 16 extends into the lower part of the recovery box 11, a third valve 20 is arranged on the drain pipe 16, and the third valve 20 can be an electric or pneumatic adjusting valve, so that the maintenance of equipment or the drainage of the recovery box 11 are facilitated.

Each washing tower also comprises a circulating pipe 14 connected between the spray heads 13 of the plurality of spray units and the recovery box 11 and a circulating pump 15 arranged on the circulating pipe 14, the washing liquid in the recovery box 11 is conveyed to each spray head 13 through the circulating pipe 14 under the action of the circulating pump 15, is sprayed into the tower body 1 through the spray heads 13 to be directly contacted with the ascending gas material, then falls into the packing layer 12, falls into the bottom of the tower body 1 after passing through the packing layer 12, and then flows back to the recovery box 11 through the liquid discharge pipe 16 for recycling.

Each recovery tank 11 is provided with an overflow port for preventing the liquid level in the recovery tank 11 from being too high, a liquid discharge port for discharging the liquid in the recovery tank 11, a liquid feed port for feeding the washing liquid into the recovery tank 11, and an observation window for observation.

In order to facilitate the work such as maintenance, clearance and material collection to tower body 1 inner part, still set up on the tower body 1 and can supply operating personnel to pass in and out personnel of tower body 1 and import and export 21, personnel are imported and exported and are provided with detachable apron on 21. In this example, a plurality of the personnel access openings 21 are provided, and the plurality of personnel access openings 21 are sequentially distributed along the height direction of the tower body 1. If each filler layer can be correspondingly provided with personnel entrances and exits.

Referring to fig. 2, the recycling apparatus further includes a washing liquid storage tank 17 for storing washing liquid, and the washing liquid storage tank 17 is connected to the recycling tanks 11 of the washing towers through pipes, so as to facilitate the transportation of the washing liquid to the recycling tanks 11, and facilitate the replacement of the washing liquid in the recycling tanks 11. The pipeline can also be provided with a delivery pump. When the concentration of the substance in the washing liquid in one recycling box 11 of a plurality of washing towers is too high and the washing liquid needs to be replaced, only the washing liquid which is introduced into the corresponding tower body 1 needs to be discharged from the recycling box 11,

the washing liquid can be water or other substances.

The multi-stage spraying, washing and recycling equipment adopts a direct contact type spraying and washing treatment principle, and is designed into a multi-stage countercurrent spraying and washing structure by selecting reasonable packing specifications, packing filling thickness, spraying density and spraying head quantity and distance between the spraying heads and the top of the packing after the parameter properties and the physicochemical characteristics of gas materials are known, researched and calculated so as to achieve the highest recycling efficiency of the gas materials. The spraying cleaning solution is designed by recycling, so that the generation of secondary pollution is reduced, and no secondary pollution is generated.

Gas materials enter a first washing tower of the plurality of washing towers through the gas inlet pipe 5, the gas materials are captured by the atomized washing liquid and then enter the washing liquid, flow from top to bottom along with the washing liquid, then enter the washing liquid storage tank 11 through the liquid discharge pipe 16 of the tower body 1, and are washed and recovered through the plurality of spraying units, so that the gas materials are treated and recovered for the first time; the gas materials which are not captured enter a second washing tower, then are treated and recovered by the same treatment principle as the first washing tower, and then are treated and recovered by a plurality of washing towers in sequence, the concentration of the gas materials recovered by the first washing tower is the highest, and the concentration of the gas materials recovered is gradually reduced along with the increase of the number of the washing towers.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a multistage washing recovery plant that sprays, includes a plurality of scrubbing towers that series connection in proper order, each the scrubbing tower has air inlet and gas outlet, two adjacent in the scrubbing tower the gas outlet of preceding one the scrubbing tower with the gas inlet of back one the scrubbing tower passes through the connecting tube and links to each other, the series connection the air inlet of the first scrubbing tower in a plurality of scrubbing towers connects the intake pipe, the gas outlet connection outlet duct of the gas outlet of last scrubbing tower, its characterized in that: the recovery equipment further comprises a public pipeline, the public pipeline is respectively connected with the air inlet pipe, the air outlet pipe and the connecting pipeline between two adjacent washing towers through a plurality of branch pipelines, and each branch pipeline is provided with a first valve.

2. The multi-stage spray scrubbing recovery apparatus of claim 1, wherein: and the pipelines connected with the air inlets and the air outlets of the washing towers are respectively provided with a second valve, and each second valve is positioned between the connection part of the pipeline connected with the air inlet or the air outlet of each washing tower and the branch pipeline.

3. The multi-stage spray scrubbing recovery apparatus of claim 1, wherein: the recovery equipment also comprises a drying demisting device which is connected to the gas outlet pipe and is used for drying and demisting the gas treated by the plurality of washing towers.

4. The multi-stage spray scrubbing recovery apparatus of claim 1, wherein: 4-10 washing towers are arranged.

5. The multi-stage spray washing recovery plant according to any one of claims 1 to 4, characterized in that: each washing tower comprises a tower body with the air inlet and the air outlet, a spraying unit arranged in the tower body, a recovery box arranged below the tower body and communicated with the tower body, wherein the spraying unit comprises a packing layer arranged in the tower body, a spraying head arranged above the packing layer and used for spraying washing liquid into the tower body, and each washing tower further comprises a circulating pipe connected between the spraying head and the recovery box and a circulating pump arranged on the circulating pipe.

6. The multi-stage spray scrubbing recovery apparatus of claim 5, wherein: the spraying units are arranged in a plurality, the spraying units are sequentially arranged in the tower body along the height direction of the tower body, each spraying unit comprises the packing layer and a spraying head, and the circulating pipe is respectively connected with the spraying heads of the spraying units.

7. The multi-stage spray scrubbing recovery apparatus of claim 6, wherein: the spray heads of the spray units are arranged in a plurality, the spray heads are uniformly distributed in the tower body, and the spray heads are atomizing spray heads.

8. The multi-stage spray scrubbing recovery apparatus of claim 5, wherein: each washing tower further comprises a liquid level control device for monitoring the liquid level in the recovery box, and the recovery box is provided with an overflow port for avoiding the overhigh liquid level in the recovery box, a liquid discharge port for discharging the liquid in the recovery box, a liquid supply port for conveying washing liquid into the recovery box and an observation window for observation.

9. The multi-stage spray scrubbing recovery apparatus of claim 5, wherein: the bottom of the tower body is connected with a liquid discharge pipe, the end part of the liquid discharge pipe extends into the lower part in the recovery box, and a third valve is arranged on the liquid discharge pipe.

10. The multi-stage spray scrubbing recovery apparatus of claim 5, wherein: the recovery equipment further comprises a washing liquid storage tank for storing washing liquid, and the washing liquid storage tank is connected with the recovery tank of each washing tower through a pipeline.