CN222765985U

CN222765985U - A VOCs tail gas treatment equipment for the gas purification system of a coking plant

Info

Publication number: CN222765985U
Application number: CN202421560713.9U
Authority: CN
Inventors: 王美丽; 吴丹; 俞天亮; 毛琛龙; 段鹏飞; 贾福龙
Original assignee: Qinghua Coalification Co ltd Inner Mongolia Qinghua Group Co ltd
Current assignee: Qinghua Coalification Co ltd Inner Mongolia Qinghua Group Co ltd
Priority date: 2024-07-03
Filing date: 2024-07-03
Publication date: 2025-04-18
Anticipated expiration: 2034-07-03

Abstract

The utility model discloses a VOCs tail gas treatment device for a gas purification system of a coking plant, comprising a first stirring blade and a first motor. The VOCs tail gas treatment device for a gas purification system of a coking plant has an aeration pipe fixedly connected to the inner bottom surface of a tower body, a first motor fixedly installed in a notch below the tower body, a first rotating shaft fixedly connected to the output end of the first motor, a first stirring blade fixedly connected to the outer wall of the first rotating shaft, and multiple groups of spraying components are arranged between two corresponding notches in the tower body, and the VOCs tail gas introduced into the tower body is uniformly introduced through the aeration pipe, so that the VOCs tail gas is directly washed with water and contacts with an absorption solvent, and at the same time, the first motor drives the first rotating shaft and the stirring blade to rotate, so that the VOCs tail gas introduced into the bottom of the tower body is fully contacted with the absorption solvent for absorption washing, and then the multiple groups of spraying components are sprayed, so that the absorption solvent at the bottom of the tower body repeatedly and fully contacts with the VOCs tail gas, effectively improving the utilization effect of the absorption solvent.

Description

VOCs tail gas treatment equipment of gas purification system of coking plant

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to VOCs tail gas treatment equipment of a gas purification system of a coking plant.

Background

VOCs waste gas is common industrial waste gas in chemical industry, for example, VOCs waste gas can be generated in the production, storage and other processes of a gas purification system of a coking plant, most of the VOCs waste gas contains cancerogenic pollutants, if the VOCs waste gas is discharged into the atmosphere without treatment, the VOCs waste gas can seriously harm the health of human bodies, the VOCs waste gas can cause great harm to the environment, and a method for absorbing volatile gas in the industrial waste gas by using solution, solvent or clear water to separate the volatile gas from the waste gas is called an absorption method. Solutions, solvents, and clear water are referred to as absorbents. Different absorbents can absorb different harmful gases. The absorption equipment used in the absorption method is called an absorber, a purifier or a scrubber. The absorption method has a process flow similar to the wet dust removal process, but the wet dust removal process uses clear water, and the absorption method needs solvent or solution for purifying harmful gas.

In the prior art of publication No. CN215086114U and publication No. 2021-12-10, a tail gas treatment device of a VOCs gas purification system of a coking plant is provided, and comprises an air inlet pipe, wherein a cold drum pretreatment tower is arranged on one side of the air inlet pipe, a treatment mechanism is arranged on one side of the cold drum pretreatment tower, the treatment mechanism comprises a reaction cavity, a first connecting pipe is arranged on one side of the reaction cavity, one end of the first connecting pipe is connected with the cold drum pretreatment tower, the other end of the first connecting pipe penetrates through the reaction cavity and is fixedly connected with the reaction cavity, a second connecting pipe is arranged at the bottom of the reaction cavity, a water storage tank is arranged at the bottom of the second connecting pipe, the top of the second connecting pipe is connected with the bottom of the reaction cavity, and the bottom of the second connecting pipe is connected with the top of the water storage tank. By arranging the cold drum pretreatment tower and the treatment mechanism, the utility model realizes the qualified emission of tail gas, avoids environmental pollution, and ensures the health of people.

Among the above-mentioned prior art, there is the mode that adopts the absorption to carry out exhaust-gas treatment, but only sets up the placing that sprays when the exhaust-gas absorption handles, leads to the utilization to absorption solvent exist not enough high condition, influences the exhaust-gas treatment effect, therefore proposes a new coke-oven plant gas clean-up system VOCs tail gas treatment facility and optimizes above-mentioned prior art.

Disclosure of utility model

The utility model aims to provide VOCs tail gas treatment equipment of a gas purification system of a coking plant, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a coke-oven plant gas clean system VOCs tail gas treatment facility, includes the tower body, a breach has all been seted up to the upper portion and the lower part of tower body, the inboard fixedly connected with backup pad of opening of breach carries out auxiliary stay to breach department through the backup pad, the inboard bottom surface fixedly connected with aeration pipe of tower body, the one end of aeration pipe is worn out tower body and intake-tube connection, evenly set up the shower nozzle that gives vent to anger on the aeration pipe, fixed mounting has first motor in the below breach of tower body, the output fixedly connected with first pivot of first motor, first pivot insert the bottom of tower body and rotate with the tower body inboard bottom surface and be connected, the outer wall fixedly connected with first stirring leaf of first pivot is equipped with multiunit spray assembly in the tower body between corresponding two breachs.

According to the utility model, the spraying components comprise baffle plates, the baffle plates on each spraying component are arranged in a staggered mode, a serpentine gas flow channel is formed by arranging the baffle plates in a staggered mode, the distance of gas passing is prolonged, multiple spraying is carried out through the spraying components, the bottom surface of each baffle plate is fixedly connected with a liquid outlet box, water leakage holes are uniformly formed in the bottom surface of each liquid outlet box, connecting pipes are fixedly connected to the liquid outlet boxes, infusion pipes are fixedly connected to the connecting pipes after penetrating out of the tower body, one end of each infusion pipe is fixedly connected and communicated with the inner side of the bottom of the tower body, a pump body is fixedly arranged on each infusion pipe, and the pump body is fixedly arranged on the outer wall of the tower body.

As a still further scheme of the utility model, the inner side of the tower body is fixedly connected with a bracket above the corresponding top notch, a plurality of pore plates are fixedly connected below the corresponding bracket of the tower body at equal distance, a second motor is fixedly arranged in the upper notch, the output end of the second motor is inserted into the tower body and is fixedly connected with a second rotating shaft, the second rotating shaft penetrates through the pore plates in a rotating way and is connected to the bottom surface of the bracket in a rotating way, and second stirring blades are symmetrically and fixedly connected to two sides of the second rotating shaft corresponding to the pore plates.

As a still further scheme of the utility model, a demister matched with the tower body is arranged above the bracket, the demister is a tube bundle type demister, a compression ring is arranged on the top surface of the demister, a tower cover is arranged on the upper cover of the compression ring, connecting flanges are arranged on the corresponding openings of the tower cover, the compression ring and the tower body, the connecting flanges are mutually stacked and fixedly arranged through bolts, through holes for bolt fixation are formed in the connecting flanges, and an air outlet is formed in the top surface of the tower cover.

As a still further proposal of the utility model, the bottom surface of the pressure ring is fixedly embedded with a separation net, the inner side of the pressure ring is provided with an active carbon filter screen matched with the pressure ring, the inner side of the bottom of the tower cover is fixedly connected with a propping ring, and the propping ring is pressed on the top surface of the active carbon filter screen.

As a still further scheme of the utility model, the inner side of the bottom of the tower body is provided with an absorption solvent, the side wall of the tower body corresponding to the notch below is fixedly connected with a liquid injection pipe, the liquid injection pipe is fixedly provided with a sealing cover through a bolt, and the side wall of the bottom of the tower body is provided with a drain valve.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the utility model, the VOCs tail gas introduced into the tower body is uniformly introduced through the aeration pipe, so that the VOCs tail gas is directly washed and contacted with the absorption solvent, and simultaneously, the first motor is matched to drive the first rotating shaft and the stirring blade to rotate, so that the VOCs tail gas introduced into the bottom of the tower body is fully contacted with the absorption solvent to be absorbed and washed, and then, the plurality of groups of spraying components are matched to spray, so that the absorption solvent at the bottom of the tower body is repeatedly and fully contacted with the VOCs tail gas, the utilization effect of the absorption solvent is effectively improved, and the VOCs tail gas treatment effect is improved.

2. According to the utility model, multiple spraying is carried out in the serpentine gas flow channel formed by the baffle plates through the multi-layer spraying assembly, so that the absorption and purification effects of VOCs tail gas are further improved.

3. According to the utility model, the mist carried in the ascending VOCs tail gas can be condensed through the demister, so that the water vapor content in the treated VOCs tail gas is reduced, and the VOCs tail gas can be conveniently contacted with the activated carbon filter screen, so that the treated VOCs tail gas is further treated, and the treatment effect of the VOCs tail gas is further improved.

4. According to the utility model, the upward flowing treated VOCs tail gas is dispersed through the arrangement of the pore plate, and the flowing air is further dispersed by driving the second rotating shaft and the second stirring blade to rotate by matching with the second motor, so that the treated VOCs tail gas entering the demister and the active carbon filter screen is uniformly distributed, and is convenient to uniformly contact with the demister and the active carbon filter screen.

5. The demister is placed on the bracket, the compression ring and the tower cover are mutually stacked, the active carbon filter screen is limited in the compression ring through Ge Ang and the support, and the connecting flange is locked through the bolts to form assembly type installation, so that the disassembly and maintenance can be conveniently realized.

Drawings

FIG. 1 is a schematic diagram of a device for treating VOCs tail gas of a gas purification system of a coking plant.

Fig. 2 is a front view of a device for treating VOCs tail gas of a gas cleaning system of a coking plant.

FIG. 3 is an illustration of an aeration pipe in a VOCs tail gas treatment device of a coke-oven plant gas purification system.

Fig. 4 is a diagram showing a bracket in the VOCs tail gas treatment equipment of the gas purification system of the coking plant.

In the figure, 1, a tower body; 2, a notch, 3, a supporting plate, 4, an aeration pipe, 5, a spray head, 6, a first motor, 7, a first rotating shaft, 8, a first stirring blade, 9, a spray assembly, 10, a baffle, 11, a liquid outlet box, 12, a water leakage hole, 13, a connecting pipe, 14, a transfusion pipe, 15, a pump body, 16, a bracket, 17, an orifice plate, 18, a second motor, 19, a second rotating shaft, 20, a second stirring blade, 21, a demister, 22, a compression ring, 23, a tower cover, 24, a connecting flange, 25, a separation net, 26, an active carbon filter screen, 27, an abutting ring, 28 and a switch.

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. 1-4, in an embodiment of the present utility model, a device for treating VOCs tail gas in a gas purification system of a coke plant includes a tower body 1, a notch 2 is formed at an upper portion and a lower portion of the tower body 1, a support plate 3 is fixedly connected to an inner side of an opening of the notch 2, the notch 2 is supported in an auxiliary manner by the support plate 3, an aeration pipe 4 is fixedly connected to an inner bottom surface of the tower body 1, one end of the aeration pipe 4 penetrates out of the tower body 1 and is connected with an air inlet pipe, an air outlet nozzle 5 is uniformly formed on the aeration pipe 4, a first motor 6 is fixedly mounted in the notch 2 below the tower body 1, an output end of the first motor 6 is fixedly connected with a first rotating shaft 7, the first rotating shaft 7 is inserted into a bottom of the tower body 1 and is rotatably connected with the inner bottom surface of the tower body 1, a first stirring blade 8 is fixedly connected to an outer wall of the first rotating shaft 7, and a plurality of groups of components 9 are arranged between the corresponding two notches 2 in the tower body 1.

VOCs tail gas that will let in tower body 1 through aeration pipe 4 evenly imports for VOCs tail gas directly carries out the washing, contacts with absorbing solvent, and cooperation first motor 6 drives first pivot 7 and stirring vane 8 simultaneously rotates, makes VOCs tail gas that lets in tower body 1 bottom fully contact with absorbing solvent, absorbs the washing, and multiunit spray assembly 9 that is matched again sprays, makes absorbing solvent of tower body 1 bottom relapse and abundant contact with VOCs tail gas, effectually improved absorbing solvent's result of utilization, improves VOCs tail gas treatment effect.

Spray the subassembly 9 and include baffle 10, baffle 10 on every spray the subassembly 9 crisscross setting, through crisscross setting baffle 10 shape snakelike gas runner, the distance that extension gas passed through, and spray many times through a plurality of spray the subassembly 9, the bottom surface fixedly connected with of baffle 10 goes out liquid box 11, the hole 12 that leaks has evenly been seted up to the bottom surface of going out liquid box 11, fixedly connected with connecting pipe 13 on the liquid box 11, common fixedly connected with transfer line 14 behind the connecting pipe 13 wears out tower body 1, transfer line 14 one end and the inboard fixedly connected and intercommunication of bottom of tower body 1, fixedly mounted has pump body 15 on the transfer line 14, pump body 15 fixed mounting is on the outer wall of tower body 1.

The multilayer spraying assembly 9 is used for carrying out multiple spraying in a serpentine gas flow channel formed by the baffle plate 10, so that the absorption and purification effects of VOCs tail gas are further improved.

The top that the inboard of tower body 1 corresponds top breach 2 fixedly connected with bracket 16, the tower body 1 corresponds the below equidistance fixedly connected with a plurality of orifice plates 17 of bracket 16, fixedly mounted with second motor 18 in the breach 2 of top, the output of second motor 18 inserts in the tower body 1 and fixedly connected with second pivot 19, second pivot 19 rotates and runs through orifice plate 17 and rotate the bottom surface of connecting at bracket 16, the both sides that second pivot 19 corresponds orifice plate 17 equal symmetry fixedly connected with second stirring leaf 20.

The top of bracket 16 is equipped with the defroster 21 with tower body 1 looks adaptation, and defroster 21 is tube bank defroster, and clamping ring 22 has been placed to the top surface of defroster 21, and the top lid of clamping ring 22 is equipped with tower lid 23, and the corresponding opening of tower lid 23, clamping ring 22 and tower body 1 all is equipped with flange 24, and flange 24 piles up each other and through bolt fixed mounting, all offers the perforation that is used for bolt fastening on the flange 24, and the top surface of tower lid 23 is equipped with the gas outlet.

The bottom surface of clamping ring 22 is fixedly inlayed and is equipped with and separates net 25, and the inboard of clamping ring 22 is equipped with the active carbon filter screen 26 rather than the looks adaptation, and the bottom inboard fixedly connected with of tower lid 23 supports ring 27, supports ring 27 and presses the top surface at active carbon filter screen 26.

The inside absorption solvent that is equipped with in the bottom of tower body 1, the tower body 1 correspond below lateral wall department fixedly connected with notes liquid pipe of breach 2, and through bolt fixed mounting there being the closing cap on the notes liquid pipe, the drain valve is installed to the bottom lateral wall of tower body 1.

The switch 28 is fixedly arranged on the inner side of the bottom notch 2, the first motor 6, the pump body 15 and the second motor 18 are electrically connected with the switch 28 through leads, and a power supply is externally connected with the switch 28.

Can be with the water smoke condensation that carries in the VOCs tail gas after ascending processing through defroster 21, reduce the steam content in the VOCs tail gas after the processing to can be convenient get into the contact with active carbon filter screen 26, further handle the VOCs tail gas after the processing, further improve the treatment effect of VOCs tail gas.

The VOCs tail gas after the treatment that will flow upwards is dispersed through the setting of orifice plate 17, and the cooperation second motor 18 drive second pivot 19 and the rotatory air that will flow of second stirring leaf 20 further break up for the VOCs tail gas after the treatment that gets into defroster 21 and active carbon filter screen 26 evenly distributed, the convenience is with defroster 21 and active carbon filter screen 26 even contact.

The demister 21 is placed on the bracket 16, the compression ring 22 and the tower cover 23 are mutually stacked, the activated carbon filter screen 26 is limited in the compression ring 22 through Ge Ang and the abutting part 27, and the connecting flange 24 is locked through bolts to form assembly type installation, so that the disassembly and maintenance can be conveniently realized.

The working principle of the utility model is as follows:

When the liquid injection device is used, the absorption solvent is added through the liquid injection pipe, and the liquid injection pipe is plugged through the sealing cover. The demister 21, the compression ring 22 and the tower cover 23 are stacked in sequence, the activated carbon filter screen 26 is placed in the stacking process, then the activated carbon filter screen is installed and fixed through the connecting flange 24, at the moment, the first motor 6, the pump body 15 and the second motor 18 are started through the switch 28, the first motor 6 drives the first stirring blade 8 to rotate through the first rotating shaft 7, the second motor 18 drives the second stirring blade 20 to rotate through the second rotating shaft 19, the pump body 15 extracts the absorption solvent at the bottom of the tower body 1 through the infusion tube 14, meanwhile, the absorption solvent is conveyed to the liquid outlet box 11 through the connecting tube 13, and finally the absorption solvent drops downwards through the water leakage hole 12.

Through aeration pipe 4 lets in VOCs tail gas, gas gets into in the absorption solvent of tower body 1 bottom through shower nozzle 5, by rotatory first stirring leaf 8 stir fully with absorb solvent contact, form the washing effect, VOCs tail gas after the washing loops through spray assembly 9 through snakelike gas runner, VOCs tail gas further by the water liquid spray washing of many times through leaking hole 12 whereabouts, the bottom of tower body 1 is refluxed again to the abluent solvent, wherein VOCs tail gas after handling continues to rise and disperses through orifice plate 17, the rotatory second stirring leaf 20 of cooperation breaks up simultaneously, VOCs tail gas after breaking up gets into defroster 21 and carries out the defogging, VOCs tail gas after the defogging rises and gets into active carbon filter screen 26 and carries out reabsorption purification, finally discharge, accomplish the purification treatment of VOCs tail gas.

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

1. A VOCs tail gas treatment device of a gas purification system of a coking plant comprises a tower body (1) and is characterized in that a notch (2) is formed in the upper portion and the lower portion of the tower body (1), a supporting plate (3) is fixedly connected to the inner side of an opening of the notch (2), an aeration pipe (4) is fixedly connected to the inner bottom surface of the tower body (1), one end of the aeration pipe (4) penetrates out of the tower body (1) and is connected with an air inlet pipe, an air outlet spray nozzle (5) is uniformly formed in the aeration pipe (4), a first motor (6) is fixedly mounted in the notch (2) below the tower body (1), a first rotating shaft (7) is fixedly connected to the output end of the first motor (6), the first rotating shaft (7) is inserted into the bottom of the tower body (1) and is rotatably connected with the inner bottom surface of the tower body (1), a plurality of groups of spray assemblies (9) are arranged between the corresponding two notches (2) in the tower body (1).

2. The VOCs tail gas treatment equipment of the gas purification system of the coking plant, as set forth in claim 1, is characterized in that the spraying components (9) comprise baffle plates (10), the baffle plates (10) on each spraying component (9) are arranged in a staggered mode, a liquid outlet box (11) is fixedly connected to the bottom surface of each baffle plate (10), water leakage holes (12) are uniformly formed in the bottom surface of each liquid outlet box (11), connecting pipes (13) are fixedly connected to the liquid outlet boxes (11), infusion pipes (14) are fixedly connected together after the connecting pipes (13) penetrate through the tower body (1), one end of each infusion pipe (14) is fixedly connected and communicated with the inner side of the bottom of the tower body (1), and a pump body (15) is fixedly installed on each infusion pipe (14).

3. The device for treating the VOCs tail gas of the gas purification system of the coking plant according to claim 1 is characterized in that a bracket (16) is fixedly connected to the inner side of the tower body (1) above the corresponding top notch (2), a plurality of pore plates (17) are fixedly connected to the lower side of the tower body (1) corresponding to the bracket (16) at equal intervals, a second motor (18) is fixedly installed in the upper notch (2), the output end of the second motor (18) is inserted into the tower body (1) and fixedly connected with a second rotating shaft (19), the second rotating shaft (19) rotates to penetrate through the pore plates (17) and is rotationally connected to the bottom surface of the bracket (16), and second stirring blades (20) are symmetrically and fixedly connected to the two sides of the second rotating shaft (19) corresponding to the pore plates (17).

4. A coke-oven plant gas purification system VOCs tail gas treatment equipment as claimed in claim 3, wherein a demister (21) matched with the tower body (1) is arranged above the bracket (16), a compression ring (22) is arranged on the top surface of the demister (21), a tower cover (23) is arranged on the upper cover of the compression ring (22), connecting flanges (24) are arranged on the corresponding openings of the tower cover (23), the compression ring (22) and the tower body (1), the connecting flanges (24) are mutually stacked and fixedly installed through bolts, and an air outlet is formed in the top surface of the tower cover (23).

5. The device for treating VOCs tail gas of a gas purification system of a coking plant according to claim 4, wherein a separation net (25) is fixedly embedded on the bottom surface of the pressure ring (22), an activated carbon filter screen (26) matched with the pressure ring is arranged on the inner side of the pressure ring (22), a supporting ring (27) is fixedly connected on the inner side of the bottom of the tower cover (23), and the supporting ring (27) is pressed on the top surface of the activated carbon filter screen (26).

6. The VOCs tail gas treatment equipment of the gas purification system of the coking plant, as set forth in claim 1, is characterized in that the absorption solvent is arranged on the inner side of the bottom of the tower body (1), a liquid injection pipe is fixedly connected to the side wall of the tower body (1) corresponding to the lower notch (2), a sealing cover is fixedly arranged on the liquid injection pipe through bolts, and a drain valve is arranged on the side wall of the bottom of the tower body (1).