CN211216039U - An industrial waste gas treatment device - Google Patents

Abstract

The utility model discloses an industrial waste gas treatment device, which comprises a cyclone dust removal device, a pipeline I, an induced draft fan, a pipeline II and a purification and desulfurization device, wherein the cyclone dust removal device is connected with the induced draft fan through the pipeline I; the cyclone dust removal device comprises a cyclone dust removal box body, an air inlet, a spiral flow deflector, a middle through pipe, a filter screen, an air outlet, a first-stage ash discharge device, a second-stage ash discharge device, a supporting leg, a water tank, a water inlet and a water outlet; the purification and desulfurization device comprises a purification and desulfurization box body, an upper partition plate, a lower partition plate, an alkaline liquid pool, a clean water pool, an air inlet pipe, a support, an inclined plate, a blow-off pipe, a flow gathering cover, a leading-in pipe, a first-stage demister, a second-stage demister, a third-stage demister, an air outlet, an alkaline liquid injection port, a clean water injection port and a clean water discharge port. The utility model discloses set gradually cyclone dust collector, purification and desulfurization device, carry out effectual purification treatment to industrial waste gas.

Description

An industrial waste gas treatment device

technical field

The utility model belongs to the technical field of waste gas treatment devices, in particular to an industrial waste gas treatment device.

Background technique

At present, a large amount of pollutants are generated during the fuel combustion and production process in the factory area of the enterprise. At high temperature, the coke and the carbon monoxide generated by the combustion reduce the iron from the iron ore, and a large amount of smoke and dust will be generated in this process. Acidic waste gases such as sulfides and nitrogen oxides are produced during the combustion process.

In the existing waste gas treatment device, the bag filter is the main method for dust treatment, but the bag dust collector occupies a large area, and some large particles of smoke easily block the dust bag, aggravating the wear of the bag, and the maintenance cost is high in the later stage. The desulfurization of the discharge gas and the improvement of the desulfurization effect, the equipment occupies a large area, and the maintenance cost in the later period is high;

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the deficiencies in the prior art, and to provide an industrial waste gas treatment device with a reasonable structure, and a cyclone dust removal device and a purification and desulfurization device are arranged in sequence to effectively purify the industrial waste gas.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is:

An industrial waste gas treatment device, comprising a cyclone dust removal device, a pipeline I, an induced draft fan, a pipeline II, and a purification and desulfurization device. The cyclone dust removal device is connected to the induced draft fan through the pipeline I, and the induced draft fan is connected to the purification and desulfurization device through the pipeline II. Connect centrifugal fans through pipes;

The cyclone dust removal device includes a cyclone dust removal box, an air inlet, a spiral deflector, a mid-pass pipe, a filter screen, an air outlet, a primary dust discharge device, a secondary dust discharge device, a support leg, a water tank, a water inlet, The water outlet, the cyclone dust box is a conical box, the outer side wall of the bottom of the conical box is provided with a number of supporting legs, the upper side wall of the cyclone box is provided with an air inlet, and the inner side wall of the cyclone box is provided with The water tank is arranged around the cyclone dust removal box. The bottom of the water tank is provided with a water inlet, and the top of the water tank is provided with a water outlet. The center of the cyclone dust removal box is provided with a middle pass pipe, one end of the middle pass pipe is provided with a filter, and the other end of the middle pass pipe is provided. There is an air outlet, the outer side wall of the middle pass pipe is provided with a spiral guide plate, and the spiral guide plate is arranged between the side wall of the water tank and the side wall of the middle pass pipe; There is a secondary ash unloading device at the bottom of the ash unloading device; first of all, the industrial waste gas under high temperature combustion contains a lot of heat and large particles of dust. The exhaust gas enters the cyclone dust removal device through the air inlet. The cooling water exchanges heat with the high-temperature exhaust gas, recycles the waste heat, converts the high-temperature exhaust gas into low-temperature exhaust gas, gathers through the spiral guide vane, further filters through the filter screen, and effectively collects large particles of dust, and passes through the first-level ash discharge device. The ash unloading is carried out, the secondary ash unloading device is used for ash unloading, and the dust is collected and processed;

The purification and desulfurization device includes a purification and desulfurization box, an upper clapboard, a lower clapboard, a lye pool, a clear water pool, an air intake pipe, a bracket, a sloping plate, a sewage pipe, a flow collecting hood, an introduction pipe, a primary demister, Secondary demister, tertiary demister, air outlet, lye injection port, clean water injection port, and clean outlet, the purification desulfurization box is provided with upper and lower partitions, and the upper partition and the lower There is a collecting hood between the partitions, and the bottom of the collecting hood is provided with an introduction pipe; the lower partition divides the bottom of the purification and desulfurization box into a lye pool and a clean water tank, the introduction pipe extends into the clean water tank, and the upper side of the lye tank is The wall is provided with an lye injection port, the upper side wall of the clean water tank is provided with a clean water injection port, and the lower side wall of the clean water tank is provided with a clean outlet; the upper part of the lye tank is provided with a bracket, and an air inlet pipe is arranged on the bracket, and one end of the air inlet pipe extends into In the lye, the other end of the air inlet pipe is connected to the induced draft fan through the pipeline II, the bottom of the lye pool is provided with a sloping plate, and one side of the sloping plate is provided with a sewage pipe; The upper part of the mist eliminator is provided with a second-stage mist eliminator, the upper part of the second-stage mist eliminator is a third-stage mist eliminator, and the upper part of the third-stage mist eliminator is provided with an air outlet on the side wall of the purification and desulfurization box, and the air outlet is connected to a centrifugal fan through a pipeline;

The first-level mist eliminators, the second-level mist eliminator and the third-level mist eliminator have the same structure, and the purified gas is demisted through the multi-layer mist eliminator; the exhaust gas after cyclone dust removal enters the lye pool through the intake pipe for water bathing Dust removal, through lye neutralizing the acid waste gas in the waste gas, to achieve purification and desulfurization, the gas after the water bath lye enters the clear water tank through the gathering hood and the introduction pipe for dilution to prevent the neutralized high-concentration salt solution from being washed by the water bath. The gas is taken away and discharged, forming new dust pollution.

Preferably, the first-level ash unloading device and the second-level ash unloading device have the same structure, and the ash unloading device includes an ash unloading plate, an ash unloading bracket, a rotating shaft, and a hand wheel, and the ash unloading plate is attached to the inner side of the ash outlet of the cyclone dust removal box. There is a rubber layer on the outside of the ash discharge plate. Through the deformation of the rubber, the ash discharge plate can better fit the inner wall of the ash outlet of the cyclone dust removal box. One end of the ash discharge plate is provided with a rotating shaft, which passes through the ash discharge The bracket and the ash discharge bracket are arranged on the outer side wall of the cyclone dust removal box, and the other end of the rotating shaft is provided with a hand wheel.

Preferably, a roller is provided at the bottom of the purification and desulfurization box, and the position of the purification and desulfurization device can be walked through the roller, which is convenient for maintenance and repair in the later period.

Preferably, a vibrator is provided at the bottom of the inclined plate, and the vibrator effectively collects the fine dust precipitated in the water bath lye, and sends the precipitated fine dust to the sewage pipe through vibration.

Preferably, the upper part of the lye pool is provided with a spray mechanism, and the spray mechanism includes a spray liquid inlet, a liquid storage tank, a main spray pipe, a fixed seat, a branch pipe, a liquid outlet, and a baffle cover, The top of the liquid storage tank is provided with a spray liquid inlet, the spray liquid inlet is connected to the pump body through a hose, and the pump body draws the lye spray liquid into the liquid storage tank, and there are several sprays on one side of the liquid storage tank. The main pipe and the main spray pipe are arranged between the upper partition and the purification and desulfurization box through the fixed seat. There are several branch pipes at the bottom of the main spray pipe. The plate cover and the liquid outlet further desulfurize and dust the gas in the water bath, and the baffle cover disperses and sprays the sprayed lye to increase the spray effect.

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

1) The industrial waste gas under high temperature combustion contains a lot of heat and large particles of dust. The waste gas enters the cyclone dust removal device through the air inlet. At the same time as the cyclone dust removal, the circulating cooling water in the water tank exchanges heat for the high temperature waste gas, and the waste heat is recycled and utilized. , the high temperature waste gas is converted into low temperature waste gas, which is gathered by the spiral guide plate, and further filtered by the filter screen, the dust of large particles can be effectively collected and the waste gas dust treatment efficiency is high;

2) The waste gas after cyclone dust removal enters the lye pool through the air inlet pipe for water bath dust removal, and the acid waste gas in the waste gas is neutralized by the lye solution to achieve purification and desulfurization. Dilution, the last stage mist eliminator, the second stage mist eliminator and the third stage mist eliminator are discharged, and the purification effect is good.

3) The liquid outlet in the spray mechanism further desulfurizes and dusts the gas in the water bath, and the baffle cover disperses and sprays the sprayed lye to increase the spray effect.

Description of drawings

1 is a schematic structural diagram of an industrial waste gas treatment device of the present invention;

2 is a schematic structural diagram of a cyclone dust removal device in an industrial waste gas treatment device of the present invention;

3 is a schematic structural diagram of an ash unloading device in an industrial waste gas treatment device of the present invention;

4 is a schematic structural diagram of a purification and desulfurization device in an industrial waste gas treatment device of the present invention;

5 is a schematic diagram of the enlarged structure of a branch pipe in an industrial waste gas treatment device of the present invention;

In the figure: 11, cyclone dust removal device; 12, pipeline I; 13, induced draft fan; 14, pipeline II; 15, purification and desulfurization device; 101, cyclone dust removal box; 102, air inlet; 103, spiral guide plate; 104, middle pipe; 105, filter; 106, air outlet; 107, primary ash discharge device; 108, secondary ash discharge device; 109, support leg; 110, water tank; 111, water inlet; 112, water outlet ; 201, ash discharge plate; 202, ash discharge bracket; 203, rotating shaft; 204, hand wheel; 301, purification desulfurization box; 302, upper clapboard; 303, lower clapboard; 304, lye pool; 305, Clear water pool; 306, air intake pipe; 307, bracket; 308, inclined plate; 309, vibrator; 310, sewage pipe; 311, flow collecting hood; 312, introduction pipe; 313, first-level mist eliminator; 314, second-level 315, three-stage demister; 316, air outlet; 317, lye inlet; 318, clean water inlet; 319, drain outlet; 320, roller; 401, spray inlet; 402, Liquid storage tank; 403, main spray pipe; 404, fixed seat; 405, branch pipe; 406, liquid outlet; 407, baffle cover.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the technical solutions of the present invention are further described in detail below with reference to the accompanying drawings 1-5.

An industrial waste gas treatment device, comprising a cyclone dust removal device 11, a pipeline I12, an induced draft fan 13, a pipeline II14, and a purification and desulfurization device 15. The cyclone dust removal device 11 is connected to the induced draft fan 13 through the pipeline I12, and the induced draft fan 13 is connected to the purification through the pipeline II14. The desulfurization device 15, the purification desulfurization device 15 is connected to the centrifugal fan through the pipeline;

The cyclone dust removal device 11 includes a cyclone dust removal box 101 , an air inlet 102 , a spiral guide plate 103 , a mid-pass pipe 104 , a filter screen 105 , an air outlet 106 , a primary dust removal device 107 , and a secondary dust removal device 108 , support legs 109, water tank 110, water inlet 111, water outlet 112, the cyclone dust removal box 101 is a conical box body, the outer side wall of the bottom of the conical box body is provided with a number of supporting legs 109, the upper side of the cyclone dust removal box 101 The wall is provided with an air inlet 102, the inner side wall of the cyclone dust box 101 is provided with a water tank 110, the water tank 110 is arranged around the cyclone dust box 101, the bottom of the water tank 110 is provided with a water inlet 111, and the top of the water tank 110 is provided with a water outlet 112, The center of the cyclone dust removal box 101 is provided with a central passage 104, one end of the central passage 104 is provided with a filter screen 105, the other end of the central passage 104 is provided with an air outlet 106, and the outer side wall of the central passage 104 is provided with a spiral guide plate 103, The spiral guide vane 103 is arranged between the side wall of the water tank 110 and the side wall of the central pipe 104; the bottom of the cyclone dust removal box 101 is provided with a primary ash discharge device 107, and the bottom of the primary ash discharge device 107 is provided with a secondary ash discharge device device 108;

The purification and desulfurization device 15 includes a purification and desulfurization box 301, an upper baffle 302, a lower baffle 303, an lye tank 304, a clean water tank 305, an air intake pipe 306, a bracket 307, a sloping plate 308, a sewage pipe 310, and a flow collecting hood. 311. Introductory pipe 312, primary demister 313, secondary demister 314, tertiary demister 315, air outlet 316, lye injection port 317, clean water injection port 318, and purge port 319, the purification The desulfurization box 301 is provided with an upper baffle 302 and a lower baffle 303, a concentrator 311 is arranged between the upper baffle 302 and the lower baffle 303, and an inlet pipe 312 is arranged at the bottom of the concentrator 311; the lower baffle 303 The bottom of the purification and desulfurization box 301 is divided into a lye tank 304 and a clean water tank 305, the introduction pipe 312 extends into the clean water tank 305, the upper side wall of the lye tank 304 is provided with an alkali liquid injection port 317, and the upper side wall of the clean water tank 305 is provided with an alkaline liquid injection port 317. There is a clean water injection port 318, and the lower side wall of the clean water pool 305 is provided with a cleaning port 319; the upper part of the lye pool 304 is provided with a bracket 307, and an air inlet pipe 306 is arranged on the bracket 307. The other end of 306 is connected to the induced draft fan 13 through the pipeline II14, the bottom of the lye pool 304 is provided with a sloping plate 308, and one side of the sloping plate 308 is provided with a sewage pipe 310; The upper part of the first stage mist eliminator 313 is provided with a second stage mist eliminator 314; the upper part of the second stage mist eliminator 314 is provided with a third stage mist eliminator 315; 316 is connected to the centrifugal fan through the pipeline;

The first-stage mist eliminator 313, the second-stage mist eliminator 314, and the third-stage mist eliminator 315 have the same structure, and the purified gas is demisted by the multi-layer mist eliminator.

The first-level ash unloading device 107 and the second-level ash unloading device 108 have the same structure. The ash unloading device includes an ash-discharging plate 201, an ash-discharging bracket 202, a rotating shaft 203, and a hand wheel 204. The ash-discharging plate 201 is fitted to the cyclone dust removal box. The inner side wall of the ash outlet and the outside of the ash discharge plate 201 are provided with a rubber layer. Through the deformation of the rubber, the ash discharge plate can better fit the inner wall of the ash outlet of the cyclone dust removal box, and one end of the ash discharge plate 201 is provided with a rotating shaft 203 , the rotating shaft 203 passes through the ash unloading bracket 202, the ash unloading bracket 202 is arranged on the outer side wall of the cyclone dust removal box, and the other end of the rotating shaft 203 is provided with a hand wheel 204. Dust off.

The bottom of the purification and desulfurization box 301 is provided with a roller 320, through which the position of the purification and desulfurization device can be walked, which is convenient for maintenance and repair in the later period.

The bottom of the inclined plate 308 is provided with a vibrator 309. The vibrator effectively collects the fine dust precipitated in the water bath lye, and sends the precipitated fine dust to the sewage pipe through vibration.

The upper part of the lye pool 304 is provided with a spray mechanism, which includes a spray liquid inlet 401, a liquid storage tank 402, a main spray pipe 403, a fixed seat 404, a branch pipe 405, a liquid outlet 406, The baffle cover 407, the top of the liquid storage tank 402 is provided with a spray liquid inlet 401, the spray liquid inlet 401 is connected to the pump body through a hose, and the pump body draws the lye spray liquid into the liquid storage tank 402, and stores There are several main spray pipes 403 on one side of the liquid tank 402. The main spray pipes 403 are arranged between the upper baffle 302 and the purification and desulfurization box 301 through the fixing seat 404, and there are several branch pipes 405 at the bottom of the main spray pipes 403. , the branch pipe 405 is provided with a liquid outlet 406, the upper part of the liquid outlet 406 is provided with a baffle cover 407, the liquid outlet further desulfurizes and dusts the gas in the water bath, and the baffle cover disperses and sprays the sprayed lye, Increase the spray effect.

An industrial waste gas treatment device, the working process is as follows: first, the industrial waste gas under high temperature combustion contains a large amount of heat and large particles of dust, the waste gas enters the cyclone dust removal device through the air inlet, and at the same time as the cyclone dust removal, the circulating cooling water in the water tank The high-temperature exhaust gas is exchanged for heat, the waste heat is recycled, and the high-temperature exhaust gas is converted into a low-temperature exhaust gas, which is gathered by the spiral guide plate, and further filtered by the filter screen. ash, the secondary ash unloading device discharges ash, and the dust is collected and processed; the waste gas after cyclone dust removal enters the lye pool through the air intake pipe for water bath dust removal, and the acid waste gas in the waste gas is neutralized by the lye solution to achieve purification and desulfurization, water bath lye solution The purified gas enters the clear water tank through the concentrating hood and the introduction pipe for dilution. The first-level mist eliminator, the second-level mist eliminator and the third-level mist eliminator have the same structure, and the purified gas is removed by the multi-layer mist eliminator. mist, and finally the purified gas is discharged through the air outlet.

The above content is only an example and description of the structure of the present invention. Those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them in a similar manner, as long as they do not deviate from the present invention. structure or beyond the scope defined by the claims shall belong to the protection scope of the present invention.

Claims (5)

1. An industrial waste gas treatment device comprises a cyclone dust removal device, a pipeline I, an induced draft fan, a pipeline II and a purification and desulfurization device, and is characterized in that the cyclone dust removal device is connected with the induced draft fan through the pipeline I, the induced draft fan is connected with the purification and desulfurization device through the pipeline II, and the purification and desulfurization device is connected with a centrifugal fan through a pipeline;

the cyclone dust removal device comprises a cyclone dust removal box body, an air inlet, a spiral flow deflector, a middle through pipe, a filter screen, an air outlet, a primary dust discharge device, a secondary dust discharge device, supporting legs, a water tank, a water inlet and a water outlet, wherein the cyclone dust removal box body is a conical box body, the outer side wall of the bottom of the conical box body is provided with a plurality of supporting legs, the upper side wall of the cyclone dust removal box body is provided with the air inlet, the inner side wall of the cyclone dust removal box body is provided with the water tank, the water tank is arranged around the cyclone dust removal box body, the bottom of the water tank is provided with the water inlet, the top of the water tank is provided with the water outlet, the center of the cyclone dust removal box; the bottom of the cyclone dust removal box body is provided with a primary ash discharging device, and the bottom of the primary ash discharging device is provided with a secondary ash discharging device;

the purification and desulfurization device comprises a purification and desulfurization box body, an upper partition plate, a lower partition plate, an alkaline solution pool, a clean water pool, an air inlet pipe, a support, an inclined plate, a blow-off pipe, a flow gathering cover, an inlet pipe, a primary demister, a secondary demister, a tertiary demister, an air outlet, an alkaline solution injection port, a clean water injection port and a clean water discharge port, wherein the upper partition plate and the lower partition plate are arranged in the purification and desulfurization box body; the lower partition plate divides the bottom of the purifying and desulfurizing box body into an alkali liquor pool and a clean water pool, the lead-in pipe extends into the clean water pool, an alkali liquor filling opening is formed in the side wall of the upper part of the alkali liquor pool, a clean water filling opening is formed in the side wall of the upper part of the clean water pool, and a clean water placing opening is formed in the side wall of the lower part of the clean water; the upper part of the alkali liquor pool is provided with a support, the support is provided with an air inlet pipe, one end of the air inlet pipe extends into the alkali liquor, the other end of the air inlet pipe is communicated with a draught fan through a pipeline II, the bottom of the alkali liquor pool is provided with an inclined plate, and one side of the inclined plate is provided with a blow-off pipe; the side wall of the upper partition plate is provided with a first-stage demister, the upper part of the first-stage demister is provided with a second-stage demister, the upper part of the second-stage demister is provided with a third-stage demister, the side wall of the upper purifying and desulfurizing box body of the third-stage demister is provided with an air outlet, and the air outlet is connected with a centrifugal fan through a; the structures of the first-stage demister, the second-stage demister and the third-stage demister are consistent.

2. The industrial waste gas treatment device according to claim 1, wherein the primary ash discharging device and the secondary ash discharging device are identical in structure, the ash discharging device comprises an ash discharging plate, an ash discharging support, a rotating shaft and a hand wheel, the ash discharging plate is attached to the inner side wall of an ash outlet of the cyclone dust removal box body, a rubber layer is arranged outside the ash discharging plate, one end of the ash discharging plate is provided with the rotating shaft, the rotating shaft penetrates through the ash discharging support, the ash discharging support is arranged on the outer side wall of the cyclone dust removal box body, and the hand wheel is arranged at the other end of the rotating shaft.

3. The industrial waste gas treatment device according to claim 1, wherein the bottom of the purifying and desulfurizing box body is provided with rollers.

4. The industrial waste gas treatment device according to claim 1, wherein the swash plate is provided at a bottom thereof with a vibrator.

5. The industrial waste gas treatment device according to claim 1, wherein the upper portion of the lye pool is provided with a spraying mechanism, the spraying mechanism comprises a spraying inlet, a liquid storage tank, a spraying main pipeline, a fixing seat, branch pipes, a liquid outlet and a baffle cover, the top of the liquid storage tank is provided with the spraying inlet, the spraying inlet is connected with a pump body through a hose, the pump body pumps alkali liquor spraying liquid into the liquid storage tank, one side of the liquid storage tank is provided with a plurality of spraying main pipelines, the spraying main pipeline is arranged between an upper partition plate and a purification and desulfurization tank body through the fixing seat, the bottom of the spraying main pipeline is provided with a plurality of branch pipes, the branch pipes are provided.

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