CN210495913U

CN210495913U - High-temperature printing and dyeing waste gas treatment equipment

Info

Publication number: CN210495913U
Application number: CN201921177152.3U
Authority: CN
Inventors: 沈中增; 郭进旭; 李闪; 高彪
Original assignee: Suzhou Bontik Intelligent Technology Co ltd
Current assignee: Suzhou Bontik Intelligent Technology Co ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-05-12
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a high-temperature printing and dyeing waste gas treatment device, which comprises a multistage filtering device, a gas-gas heat exchange device, a cyclone tower, a Venturi scrubber and an active mud scrubber which are sequentially communicated; the Venturi scrubbing tower comprises a scrubbing tower body, the top of the scrubbing tower body is opened, an outlet is formed in the side wall of the scrubbing tower body, and the outlet is connected with an exhaust fan; the washing tower body is internally provided with cleaning fluid and is provided with a venturi tube, and the inlet of the venturi tube is connected with the opening at the top and is used for introducing waste gas treated by the cyclone tower; the throat of the Venturi tube is connected with a conical inclined nozzle, and the tail end of the conical inclined nozzle is inserted below the liquid level; the waste gas forms high-speed airflow through the throat of the Venturi tube and tangentially enters the liquid level in the tower body through the conical inclined nozzle to form a large number of micro-bubbles, and the micro-bubbles are fully contacted with the cleaning liquid to remove oil smoke and particulate matters in the waste gas. The utility model discloses a high temperature printing and dyeing exhaust-gas treatment equipment, the waste gas of processing printing and dyeing technology that can be high-efficient, stable, low-cost.

Description

High-temperature printing and dyeing waste gas treatment equipment

Technical Field

The utility model relates to a waste gas treatment equipment technical field, concretely relates to high temperature printing and dyeing waste gas treatment equipment.

Background

The waste gas containing the mixture of the wool fibers, the particulate matters, the oil smoke, the wax, the VOCs and the like can be discharged in the textile printing and dyeing process, and the textile printing and dyeing process has the characteristics of high temperature, high humidity and strong adhesiveness. If the waste gas is directly discharged into the atmosphere, the waste gas can cause great pollution and influence the health of staff, residents and the ecological environment. While the general treatment equipment can reduce the pollution level, the general treatment equipment still has extremely unpleasant odor and heavy smoke, and the local living conditions and the local image are influenced. For oil smoke and particulate matters with large content in the exhaust gas, the general methods such as carbon adsorption bring material consumption and high cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a high temperature printing and dyeing exhaust-gas treatment equipment, this equipment can be high-efficient, stable, the low-cost processing printing and dyeing technology's waste gas, and is good to the purifying effect of oil smoke and particulate matter, and is reliable and stable, can reach clean emission.

In order to solve the technical problem, the utility model provides a high-temperature printing and dyeing waste gas treatment device, which comprises a multistage filtering device, a gas-gas heat exchange device, a cyclone tower, a Venturi scrubbing tower and an active mud scrubbing tower which are sequentially communicated,

the venturi washing tower comprises a washing tower body, the top of the washing tower body is open, an outlet is formed in the side wall of the washing tower body, and the outlet is connected with an exhaust fan; the washing tower body is internally provided with a cleaning liquid with a certain height and is provided with a venturi tube, and an inlet of the venturi tube is connected to the opening at the top and is used for introducing waste gas treated by the cyclone tower; the throat of the Venturi tube is connected with a conical inclined nozzle, and the tail end of the conical inclined nozzle is inserted below the liquid level; the waste gas forms high-speed airflow through a throat of the Venturi tube and tangentially enters the liquid level in the tower body through the conical inclined nozzle to form a large number of micro-bubbles, and the micro-bubbles are fully contacted with cleaning liquid to remove oil smoke and particulate matters in the waste gas;

the active mud washing tower comprises a tower body and a biological reaction tank; the tower body is filled with active mud, and the side wall of the tower body is provided with an air inlet communicated with an outlet of the Venturi scrubbing tower; a plurality of activated sludge spray heads are arranged above the air inlet in the tower body, the activated sludge spray heads are communicated with the activated sludge at the bottom of the tower body through activated sludge pipelines, and sludge pumps are arranged on the activated sludge pipelines to pump the activated sludge circularly; the biological reaction tank is communicated with the bottom of the tower body, and a sludge valve is arranged between the biological reaction tank and the tower body.

Furthermore, in the venturi scrubber, the outlet of the conical inclined nozzle is provided with micropores or grids for forming micro-bubbles.

Further, among the active mud scrubbing tower, the end of active mud pipeline falls into a plurality of active mud branch pipes, a plurality of active mud branch pipes let in the tower body and arrange from bottom to top in proper order, a plurality of active mud shower nozzles set up respectively in on the active mud branch pipe.

Furthermore, the multistage filtering device comprises a filtering shell, one end of the filtering shell is provided with a waste gas inlet, the other end of the filtering shell is provided with a waste gas outlet, an air channel for waste gas to pass through is formed in the filtering shell, a decontamination mechanism, a cleaning mechanism and at least two filtering mechanisms are arranged in the air channel, and a pollutant collector communicated with the air channel is arranged at the bottom of the filtering shell;

the at least two filtering mechanisms are sequentially arranged along the waste gas inlet direction, two sides of the bottom of each filtering mechanism are rotatably connected to the side wall of the air duct, and the top of each filtering mechanism is connected to a hydraulic ejector rod; the hydraulic ejector rod is arranged on the bottom wall of the air duct and used for driving the filtering mechanism to switch between a horizontal state and a vertical state; the decontamination mechanism is arranged on the bottom wall of the air duct and positioned above the pollutant collector, and when the filtering mechanism is in a horizontal state, the decontamination mechanism is in contact with the filtering mechanism; the cleaning mechanism is arranged on the top wall of the air duct and used for washing the filtering mechanism.

Furthermore, scrubbing mechanism includes motor, driving fluted disc, driven fluted disc and suit in chain on driving fluted disc and the driven fluted disc, the motor is located on the outer wall of filtering the casing for drive driving fluted disc rotates, install a plurality of brushes on the chain.

Furthermore, the gas-gas heat exchange device comprises a hollow heat exchange shell consisting of a top plate, a bottom plate and a pair of side plates, wherein a partition plate is arranged in the middle of the heat exchange shell, the partition plate divides an inner cavity of the heat exchange shell into an upper air channel and a lower air channel, the lower air channel is communicated with a waste gas outlet of the multistage filtering device and is used for allowing high-temperature printing and dyeing waste gas to pass through, and the upper air channel is used for allowing low-temperature fresh air to pass through;

the top plate and the partition plate are respectively provided with a plurality of corresponding through holes, the bottom plate is provided with blind holes corresponding to the through holes, hollow heat pipes are inserted into the corresponding through holes and blind holes, two ends of each hollow heat pipe are sealed, and heat exchange media are filled in the hollow heat pipes; the hollow heat pipe is positioned at the part of the upper air duct, and the surface of the hollow heat pipe is provided with fins;

a plurality of steam cleaning spray heads and water cleaning spray heads are arranged in the lower air duct and are used for cleaning the hollow heat pipe; the bottom plate is provided with at least one waste liquid port for discharging waste.

Furthermore, detachable heat insulation boards are arranged on the bottom board and the pair of side boards, and each detachable heat insulation board comprises an inner protection layer, an outer protection layer and a heat insulation layer bonded between the inner protection layer and the outer protection layer; and the periphery of the outer protective layer is integrally formed with a connecting lug, and the connecting lug is fixed on the top plate or the side plate through a screw.

Furthermore, in the active mud washing tower, a white steam removing mechanism is arranged at the exhaust port of the tower body, a fresh air fan is connected at the air outlet of the upper air channel of the air-air heat exchange device, and the fresh air fan is communicated with the white steam removing mechanism.

Further, the cyclone tower comprises an outer tower body, a waste gas inlet communicated with a lower air duct of the gas-gas heat exchange device is arranged on the side surface of the outer tower body, a waste gas outlet is arranged at the top of the outer tower body, and the cyclone tower body, an adsorption device, a spraying device and a dewatering device are arranged inside the outer tower body; the waste gas inlet is tangentially connected to the side surface of the cyclone tower body through a waste gas guide pipe, and a cyclone plate is arranged in the cyclone tower body to generate rotary airflow; the top end of the cyclone tower body is fixed on the inner wall of the outer tower body through an oblique guide plate, the oblique guide plate is provided with a plurality of arch-shaped bulges along the circumferential direction, and a guide groove for guiding the flowing of the cleaning liquid is formed between every two adjacent arch-shaped bulges; the adsorption device is arranged above the cyclone tower body and comprises a filler screen frame and a filler layer filled in the screen frame; the spraying device is arranged above the adsorption device and comprises a spraying water pipe and a plurality of spraying heads arranged on the spraying water pipe; the dewatering device is arranged above the spraying device and comprises a dewatering screen frame and a dewatering layer filled in the dewatering screen frame.

Furthermore, the high-temperature printing and dyeing waste gas treatment equipment further comprises an oil and dust collecting tank, wherein the oil and dust collecting tank is respectively communicated with the waste liquid port of the gas-gas heat exchange device, the bottom of the outer tower body of the cyclone tower and the bottom of the venturi washing tower through guide pipes.

The utility model has the advantages that:

1. the utility model discloses to the emission characteristics of high temperature printing and dyeing technology waste gas, set up multistage filter equipment, whirl tower, venturi scrubbing tower and active mud scrubbing tower respectively, the pertinence carries out degree of depth technology to printing and dyeing waste gas and handles, with the effectual differentiation of mixture such as hair ball batting, particulate matter, oil smoke, VOCs in the waste gas, filter, decompose, reach odorless, pollution-free, invisible gas emission.

2. The utility model discloses an among the exhaust-gas treatment equipment, through set up venturi and the circular cone oblique mouth of being connected with venturi choke department in the venturi scrubbing tower for waste gas forms high velocity air through venturi choke department, and form a large amount of microbubbles under the liquid level in entering into the tower through circular cone oblique mouth tangential, greatly increased the area of waste gas with the washing liquid contact, improved the ability of oil smoke and particulate matter in the washing liquid absorption waste gas, promoted the treatment effeciency of waste gas.

3. The utility model discloses a treatment facility carries out multistage cooling to high temperature printing and dyeing waste gas through setting up heat transfer device, whirl tower and venturi scrubbing tower for the temperature that enters into waste gas in the active mud scrubbing tower can reduce to the room temperature, thereby can not harm the microorganism in the active mud.

Drawings

FIG. 1 is a schematic structural view of a high-temperature printing and dyeing waste gas treatment device of the present invention;

FIG. 2 is a schematic view of the structure of a multi-stage filtration apparatus;

FIG. 3 is a front view of a gas-gas heat exchange apparatus;

FIG. 4 is a side view of a gas-gas heat exchange unit;

FIG. 5 is a top view of a gas-to-gas heat exchange apparatus;

FIG. 6 is a schematic view of a portion of the removable insulation board of FIG. 4;

FIG. 7 is a schematic structural view of a cyclone column;

FIG. 8 is an enlarged schematic view at A in FIG. 7;

FIG. 9 is a schematic structural view of a venturi scrubber;

FIG. 10 is a cross-sectional view of the conical beveled tip of FIG. 9;

FIG. 11 is a schematic view of two configurations of a lattice at the exit of a conical bezel;

FIG. 12 is a schematic diagram of the construction of an activated sludge wash column;

wherein: 100. a multi-stage filtration device; 110. a filter housing; 111. an exhaust gas inlet; 112. an exhaust gas outlet; 120. a filtering mechanism; 121. a hydraulic ejector rod; 130. a decontamination mechanism; 131. a driving fluted disc; 132. a driven fluted disc; 133. a chain; 134. a brush; 140. a cleaning mechanism; 141. a high pressure water pipe; 142. cleaning the spray head; 150. a pollutant trap;

200. a gas-gas heat exchange device; 211. a top plate; 212. a base plate; 213. a side plate; 214. a partition plate; 215. an upper air duct; 216. a lower air duct; 217. a waste liquid port; 220. a hollow heat pipe; 221. a fin; 231. cleaning the spray head by steam; 232. cleaning the spray head with water; 240. a detachable insulation board; 241. an inner protective layer; 242. an outer protective layer; 243. a heat-insulating layer; 244. connecting lugs; 250. a fresh air machine;

300. a cyclone tower; 310. an outer tower body; 311. an exhaust gas inlet; 312. an exhaust gas outlet; 313. a stowable shelf; 314. washing the spray head; 315. a waste liquid conduit; 320. a cyclone tower body; 321. flaring; 322. necking; 330. an oblique guide plate; 331. an arch-shaped bulge; 332. a diversion trench; 340. an adsorption device; 350. a spraying device; 351. a spray header; 352. a shower head; 360. removing a water layer; 371. cleaning a liquid pump; 372. a circulation pipe; 373. a filtering net cover;

400. a venturi scrubber tower; 410. a spray chamber; 420. a shower head; 430. a venturi tube; 440. a conical beveled nose; 450. removing a water layer; 460. an exhaust fan;

500. an active mud washing tower; 510. a tower body; 511. an air inlet; 521. an activated sludge pipeline; 522. an active mud branch pipe; 523. an active mud spray head; 523. a sludge pump; 530. a filler adsorption layer; 540. a white steam removing mechanism; 550. a biological reaction tank; 551. an aeration pipe; 552. a sludge valve;

600. oil dust collecting tank.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Examples

The waste gas containing the mixture of the wool fibers, the particulate matters, the oil smoke, the wax, the VOCs and the like can be discharged in the textile printing and dyeing process, and the waste gas has the characteristics of high temperature, high humidity and strong adhesiveness and is difficult to treat. To this technical problem, the utility model discloses a high temperature printing and dyeing exhaust-gas treatment equipment, including multistage filter equipment 100, gas-gas heat transfer device 200, whirl tower 300, venturi scrubbing tower 400, active mud scrubbing tower 500 that communicate in proper order to and an oil dirt collecting pit 600.

The multi-stage filtration device 100 is the first pass through which the exhaust gas passes. Referring to fig. 1-2, the filter device includes a filter housing 110, wherein one end of the filter housing 110 is provided with an exhaust inlet 111, and the other end is provided with an exhaust inlet 112, and an air duct for passing exhaust is provided in the filter housing 110. A decontamination mechanism 130, a cleaning mechanism 140 and at least two filtering mechanisms 120 are arranged in the air duct, and a pollutant collector 150 communicated with the air duct is arranged at the bottom of the filtering shell 110.

The at least two filtering mechanisms 120 are sequentially disposed along the intake direction of the exhaust gas, and preferably, the filtering mechanisms 120 are disposed in the air duct at the same distance from each other. Each filtering mechanism 120 comprises a filtering screen frame and a filtering screen arranged in the filtering screen frame, preferably, a plurality of filtering mechanisms 120 arranged along the air inlet direction, wherein the mesh diameters of the filtering screens are sequentially reduced, so that pollutants in the waste gas can be thoroughly removed.

The two sides of the bottom of the filtering mechanism 120 are rotatably connected to the side walls of the air duct, and the top of the filtering mechanism is connected to a hydraulic ejector rod 121. The hydraulic ejector rod 121 is arranged on the bottom wall of the air duct and used for driving the filtering mechanism 120 to be switched between a horizontal state and a vertical state.

The dirt removing mechanism 130 is disposed on the bottom wall of the air duct and above the dirt collector 150, and includes a motor, a driving toothed disc 131, a driven toothed disc 132, and a chain 133 sleeved on the driving toothed disc 131 and the driven toothed disc 132. The motor is disposed on the outer wall of the filter housing 110 for driving the driving fluted disc 131 to rotate, and the chain 133 is provided with a plurality of brushes 134. When the filter mechanism 120 is in the horizontal position, the brushes 134 on the chain 133 contact the screen surface of the filter screen, so that the accumulated contaminants on the filter screen can be removed.

The cleaning mechanism 140 is disposed on the top wall of the air duct, and includes a high pressure water pipe 141 mounted on the top wall of the air duct, and a plurality of cleaning nozzles 142 are sequentially disposed on the high pressure water pipe 141 along the length direction for washing the filtering mechanism 120 below.

It should be noted that a plurality of filter mechanisms 120 may share the same decontamination mechanism 130 and cleaning mechanism 140, or each filter mechanism 120 may be provided with one decontamination mechanism 130 and one cleaning mechanism 140 independently.

In one embodiment, the multi-stage filtration apparatus 100 further comprises a controller, and a plurality of wind pressure sensors are disposed in the exhaust inlet 111, the exhaust inlet 112, and the wind channel. The controller can receive the wind pressure data detected by the wind pressure sensor and control when to start the decontamination mechanism 130, the cleaning mechanism 140 and the hydraulic ram 121 according to the wind pressure data. When the air pressure at the rear side of a certain filtering mechanism 120 is too low, the controller controls the corresponding hydraulic ejector rod to descend, so that the filtering mechanism 120 is in a horizontal state; then, starting a motor of the dirt removing mechanism 130 to rotate the chain 133 to drive the brush 134 to clean the dirt on the filter screen; meanwhile, the cleaning mechanism 140 is started to wash the filter screen, and the washed pollutants enter the pollutant collector 150; finally, the decontamination mechanism 130 and the cleaning mechanism 140 are closed, and the hydraulic mandril jacks up the filtering mechanism 120 at the same time, so that the cleaning is finished.

Compared with the prior art (chinese patent with application number 201620105964.7), the multistage filtering device 100 of the present invention has the decontamination mechanism 130 horizontally arranged below the filtering mechanism, thereby greatly reducing the wind resistance; in addition, under the working state, the dirt removing mechanism 130 can not shield the filter, so that the filtering efficiency is greatly improved; secondly, as the cleaning mechanism is arranged above the dirt removing mechanism 130, the high-pressure water flow sprayed by the cleaning mechanism can not only wash the filtering mechanism, but also wash away pollutants such as hair balls and hair flocks which are easy to adhere to the dirt removing mechanism 130, thereby avoiding manual cleaning; finally, because at least two filtering mechanisms are arranged, when one filtering mechanism is cleaned, the other filtering mechanism can still work normally without stopping, and can work continuously, so that the treatment efficiency of waste gas is improved.

Referring to fig. 1 and 3-6, a gas-gas heat exchanger 200 is disposed behind the multi-stage filtration device 100, and is mainly used for reducing the temperature of the exhaust gas. Specifically, the device comprises a hollow heat exchange shell composed of a top plate 211, a bottom plate 212 and a pair of side plates 213, wherein a partition plate 214 is arranged in the middle of the heat exchange shell, the partition plate 214 divides an inner cavity of the heat exchange shell into an upper air duct 215 and a lower air duct 216, the lower air duct 216 is communicated with a waste gas outlet of the multistage filtering device 100 and allows high-temperature printing and dyeing waste gas to pass through, the upper air duct 215 allows low-temperature fresh air to pass through, and the flow directions of the high-temperature printing and dyeing waste gas and the low-temperature fresh air are opposite. Waste gas and new trend are mutual isolation, and at the in-process that flows, waste gas is progressively cooled down, and the new trend is progressively heated up. Preferably, the air inlet of the lower air duct 216 is provided with a filter screen, so as to primarily filter particulate impurities in the exhaust gas.

The bottom plate 212 and the pair of side plates 213 are respectively provided with a detachable heat insulation plate 240, and the detachable heat insulation plate 240 can improve the heat insulation effect of the gas-gas heat exchange device 200 and reduce the heat loss. Specifically, the detachable thermal insulation board 240 includes an inner protection layer 241, an outer protection layer 242, and a thermal insulation layer 243 adhered between the inner protection layer 241 and the outer protection layer 242; the outer protective layer 242 has an engaging lug 244 integrally formed around the outer protective layer, and the engaging lug 244 is fixed to the top plate 211 or the side plate 213 by screws. The inner protection layer 241 and the outer protection layer 242 are aluminum, iron, or plastic plates, and the insulation layer 243 is an insulation layer 243 made of foam material, such as polystyrene foam plate.

A plurality of corresponding through holes are formed in the top plate 211 and the partition plate 214, blind holes corresponding to the through holes are formed in the bottom plate 212, and hollow heat pipes 220 are inserted into the corresponding through holes and the blind holes. The top of the hollow heat pipe 220 protrudes slightly from the top plate 211, so that the hollow heat pipe 220 can be easily taken out.

The hollow heat pipe 220 has two sealed ends and is filled with a heat exchange medium. The hollow heat pipe 220 may be an aluminum pipe or a copper pipe, and the heat exchange medium may be distilled water, freon, acetone, or the like. The low-temperature fresh air part of the hollow heat pipe 220 is provided with fins 221, preferably aluminum fins 221, so that the heat exchange efficiency can be improved; and the high-temperature waste gas part adopts a light pipe, so that the automatic cleaning is convenient, and the blockage is prevented.

Steam pipes and water pipes are installed on the partition plate 214 and/or the side wall of the lower air duct 216, a plurality of steam cleaning nozzles 231 and water cleaning nozzles 232 are uniformly arranged on the steam pipes and the water pipes for cleaning the hollow heat pipe 220, and each of the steam cleaning nozzles 231 and the water cleaning nozzles 232 is provided with a corresponding steam valve and a corresponding water valve. The bottom plate 212 is provided with at least one waste liquid port 217, and the waste liquid port 217 leads to the oil dust collecting tank 600.

The air outlet of the upper air duct 215 is also connected with a fresh air fan 250, and the fresh air fan 250 leads to a white steam removing mechanism 540. The heated fresh air is sent to the exhaust port at the tail end of the active mud washing tower 500 through the fresh air fan 250 to remove white water vapor at the exhaust port, so that the visual pollution of the exhaust port is solved.

The gas-gas heat exchanger 200 further comprises a control system for controlling the opening and closing of the steam valve and the water valve. All be equipped with temperature sensor at waste gas import, waste gas outlet, new trend import and new trend export, monitor the real-time condition of heat transfer and with temperature signal transmission to control system through the temperature sensor of these several places, control system judges when to wash according to temperature signal. For example, when the temperatures of the waste gas inlet and the fresh air inlet are normal, and the temperature of the fresh air outlet is low, the control system controls the steam valve and the water valve to be opened for cleaning.

The utility model discloses in, disposed steam cleaning shower nozzle 231 and water cleaning shower nozzle 232 in wind channel 216 down, wherein high temperature steam has good cleaning performance to the greasy dirt, carries out steam cleaning earlier, then reuse water washing, can reach the purpose of getting rid of cavity heat pipe 220 surface greasy dirt, wax, avoided cavity heat pipe 220 to appear the phenomenon that heat conductivility descends because of the surface attachment greasy dirt, and the greasy dirt impurity that washes down enters into in oil dirt collecting pit 600 through waste liquid mouth 217. This gas-gas heat transfer device 200 need not to pull down the heat pipe and carries out artifical washing, need not to shut down for a long time, has improved the treatment effeciency of waste gas.

Referring to fig. 1 and fig. 7-8, the cyclone tower 300 is disposed behind the gas-gas heat exchanger 200, and includes an outer tower body 310, the bottom of the outer tower body 310 is connected to the oil-dust collecting tank 600 through a waste liquid pipe 315, and the waste liquid pipe 315 is provided with a waste liquid valve. When the oil and dust in the cleaning liquid in the outer tower body 310 reaches a certain concentration, the waste liquid valve is opened, so that the cleaning liquid enters the oil and dust collecting tank 600.

The side of the outer tower body 310 is provided with a waste gas inlet 311 communicated with a lower air duct of the gas-gas heat exchange device 200, the top of the outer tower body is provided with a waste gas outlet 312, and the inner part of the outer tower body is provided with a cyclone tower body 320, an adsorption device 340, a spray device 350 and a water removal device. Wherein, waste gas import 311 passes through waste gas pipe tangential and connects on the side of whirl tower body 320, is equipped with the whirl board in the whirl tower body 320, and waste gas produces rotatory air current behind the whirl board, and waste gas is under high-speed rotatory state, and the oil smoke impurity intensive mixing in washing liquid and the waste gas dissolves mutually and absorbs. The cyclone column body 320 is provided with a flare 321 at the top for guiding the exhaust gas flow and a throat 322 at the bottom for guiding the cleaning liquid.

The top end of the cyclone tower body 320 is fixed on the inner wall of the outer tower body 310 through an oblique guide plate 330, the oblique guide plate 330 is provided with a plurality of arch-shaped protrusions 331 along the circumferential direction, and a guide groove 332 for guiding the cleaning liquid to flow is formed between two adjacent arch-shaped protrusions 331. After falling on the oblique guide plate 330, the cleaning liquid dissolving and adsorbing the smoke and dust impurities flows into the guide groove 332 along the arched protrusion 331 and then enters the cyclone tower body 320 from the guide groove 332, so that the accumulation of the oil smoke impurities is avoided, and the purification effect and the treatment efficiency of the waste gas are improved.

A plurality of washing nozzles 314 are further disposed between the inclined guide plate 330 and the adsorption device 340 in the outer tower body 310, and the washing nozzles 314 are connected to the circulation pipeline 372 through a washing pipeline. This washing nozzle 314 has played and has washed slant guide plate 330, avoids the effect of the impurity of accumulating on the slant guide plate 330.

The adsorption device 340 is arranged above the cyclone tower body 320 and comprises a filler screen frame and a filler layer filled in the screen frame; the spraying device 350 is arranged above the adsorption device 340 and comprises a spraying water pipe 351 and a plurality of spraying heads 352 arranged on the spraying water pipe 351; the water removing device is disposed above the spraying device 350, and includes a water removing frame and a water removing layer 360 filled in the water removing frame.

The cyclone tower 300 further comprises a cleaning liquid pump 371, and the cleaning liquid pump 371 is used for pumping the cleaning liquid at the bottom of the outer tower body 310 and delivering the cleaning liquid to the spray water pipe 351 through the circulation pipe 372. Through the circulating spraying, the cleaning adsorption capacity of the cleaning liquid is fully utilized, and the using amount of the cleaning liquid is reduced. Further, the bottom of the outer tower body 310 is further provided with a filter screen 373, and the filter screen 373 plays a role of filtering the cleaning liquid in the tower body, so that the blockage of the system is avoided.

The plurality of spray pipes 351 may be provided, the plurality of spray pipes 351 are introduced into the outer tower 310 and are sequentially arranged from bottom to top, and the plurality of showers 352 are respectively disposed on the spray pipes 351. Preferably, the shower heads 352 of the plurality of shower pipes 351 are arranged to be staggered so as to cover a larger area. Through adopting the mode that the multilayer sprayed, on the one hand makeed to spray more evenly, on the other hand made waste gas and washing liquid intensive mixing absorb mutually and dissolve, improved the absorption effect of smoke and dust.

A plurality of retractable shelves 313 are circumferentially arranged on the inner wall of the outer tower body 310, and a filler screen frame or a dewatering screen frame can be placed on the shelves. The retractable structure can be realized by a torsion spring, and the shelf has the advantage of facilitating replacement of the adsorption device 340 and the water removal device as required. In addition, the adsorption device 340 and the water removal device can be set to be a plurality of according to the needs, and when the adsorption device and the water removal device are set to be a plurality of, the adsorption and the water removal effects can be improved.

The packing layer and the dewatering layer 360 are both composed of a plurality of hollow spheres, and the hollow spheres are made of polyurethane or polypropylene. The hollow ball prepared from polyurethane or polypropylene has low price, good weather resistance, environmental protection and no pollution, and the packing layer and the dewatering layer 360 which are composed of the hollow ball have larger porosity on one hand and cannot prevent waste gas from passing through, and on the other hand, the retention time of the waste gas is prolonged and the contact area with the cleaning liquid is increased, so that impurities such as oil smoke in the waste gas are fully dissolved in the cleaning liquid.

The utility model discloses in, on the top of whirl tower body was fixed in the inner wall of outer tower body through the slant guide plate, it is protruding to be equipped with a plurality of arches at the slant guide plate along circumference to constitute the guiding gutter that the guide washing liquid flows between two adjacent arch archs, dissolve the washing liquid that adsorbs smoke and dust impurity and fall on the slant guide plate after, can follow the arch and flow to the guiding gutter in, it is internal to enter into the whirl tower by the guiding gutter again, thereby avoid accumulating oil smoke impurity, the purifying effect and the treatment effeciency of waste gas have been improved.

The venturi scrubber 400 is disposed behind the cyclone tower 300 and is mainly used to thoroughly absorb oil smoke and particulate matters in the exhaust gas. Referring to fig. 1 and 9-11, the venturi scrubber 400 comprises a scrubber body having an open top and an outlet on the sidewall, the outlet being connected to an exhaust fan 460; the washing tower body is internally provided with a cleaning liquid with a certain height and is provided with a venturi tube 430, and the inlet of the venturi tube 430 is connected to the top opening and is used for introducing waste gas treated by the cyclone tower 300. A venturi tube 430 is further arranged in the washing tower body, waste gas is introduced into an inlet of the venturi tube 430, a throat of the venturi tube 430 is connected with a conical oblique nozzle 440, and the tail end of the conical oblique nozzle 440 is inserted below the liquid level. The waste gas forms high-speed airflow through the throat of the venturi tube 430 and tangentially enters the liquid level in the tower through the conical inclined nozzle 440 to form a large amount of micro-bubbles, and the micro-bubbles are fully contacted with the cleaning liquid to remove oil smoke and particles in the waste gas.

The utility model discloses mainly utilized the venturi effect, fluid appears the phenomenon of velocity of flow increase when overflowing the section through reducing promptly. Therefore, the waste gas forms high-speed airflow when passing through the throat of the venturi tube 430 and tangentially enters the liquid level in the tower through the conical inclined nozzle 440, so that a large amount of micro-bubbles are formed, the contact area of the waste gas and the cleaning liquid is greatly increased, and the capability of the cleaning liquid for absorbing oil smoke and particulate matters in the waste gas is improved.

Further, a spraying cavity 410 is arranged at the top of the washing tower body of the venturi washing tower 400, and spraying heads 420 are arranged around the spraying cavity 410; the exhaust enters the spray chamber 410 to be sprayed and then enters the venturi 430.

In order to improve the generation capability of micro-bubbles, it is preferable that the exit of the conical oblique nozzle 440 is provided with micro-holes or grids for forming micro-bubbles. Referring to fig. 3, the shape of the cells or cells includes, but is not limited to, circular, square, diamond, honeycomb, preferably diamond or honeycomb. Under the action of the exhaust fan 460 at the rear part of the venturi scrubber 400, the venturi scrubber 400 is under negative pressure, so that the microbubbles entering the liquid level rise and are removed by the double-layer water removing layer 450 above the liquid level.

The activated sludge scrubber 500 is disposed after the venturi scrubber 400 to remove the odor from the exhaust gas. Specifically, referring to fig. 1 and 12, the activated sludge washing tower 500 includes a tower body 510 and a biological reaction tank 550. The bottom of the tower body 510 is filled with active mud, and the side wall of the tower body is provided with an air inlet 511 to be communicated with the outlet of the venturi scrubber 400; a plurality of active mud spray heads 523 are arranged above the air inlet 511 in the tower body 510, the active mud spray heads 523 are communicated with active mud at the bottom in the tower body 510 through active mud pipelines 521, and a sludge pump 523 is arranged on the active mud pipelines 521 to pump the active mud circularly; the biological reaction tank 550 is communicated with the bottom of the tower body 510, and a sludge valve 552 is arranged between the biological reaction tank 550 and the tower body 510.

The utility model discloses in, contain in the bioactive mud a large amount of aerobic bacteria class microorganism that can decompose organic matter. Before the high-temperature printing and dyeing waste gas enters the tower body 510, the temperature of the high-temperature printing and dyeing waste gas is reduced to be below 60 ℃, and the microorganisms in the activated sludge cannot be damaged. After entering the tower body 510, the exhaust gas starts to rise and contacts with the active mud sprayed by the active mud spray head 523 in a counter-current manner, and organic odor substances in the exhaust gas are adsorbed and intercepted by the active mud, so that the odor and the peculiar smell are removed, and the clean air is formed. The activated sludge is circularly pumped by the sludge pump 523, so that on one hand, odor substances in the waste gas are adsorbed as much as possible, and the capability of the activated sludge for decomposing organic matters is fully utilized; on the other hand, the activated sludge is fully contacted with the air in the circulating process, so that the dissolved oxygen of the activated sludge is improved, and the biological decomposition effect is improved.

The tail end of the active sludge pipeline 521 is further divided into a plurality of active sludge branch pipes 522, the plurality of active sludge branch pipes 522 are introduced into the tower body 510 and are sequentially arranged from bottom to top, and the plurality of active sludge spray heads 523 are respectively arranged on the active sludge branch pipes 522. Through adopting a plurality of shower nozzles, the mode that the multilayer sprayed, peculiar smell material in can fully adsorbing the waste gas.

At least one filler adsorption layer 530 is further arranged above the active mud nozzles 523 in the tower body 510. The filler in the filler adsorption layer 530 is selected from one or more of activated carbon, diatomite, polyurethane particles and polypropylene particles. The filler has the characteristics of high porosity and high specific surface area, and can further adsorb organic matters and moisture in the waste gas.

The biological reaction tank 550 is further connected with an aeration pipe 551. In the process of biodegradation, a large amount of oxygen is consumed, and the aeration pipe 551 aerates the biological reaction tank 550, so that the peculiar smell substances can be fully degraded.

The upper part in the tower body 510 is also provided with a white vapor removing mechanism 540 to eliminate white vapor at the discharge port, thereby solving the problem of visual pollution of the discharge port. The steam removing mechanism 540 is described in patents such as cn201811396528.x, CN201811396530.7, etc., and will not be described herein.

In addition, a monitoring point for detecting odor is arranged at the discharge opening at the top of the tower body 510. When the peculiar smell at the discharge port is detected, the adsorption capacity of the surface active sludge reaches saturation, at the moment, the introduction of waste gas is stopped, and the sludge valve 552 is opened to enable the active sludge to enter the biological reaction tank 550 for biodegradation; then biological sludge is put into the activated sludge washing tower 500 to ensure the treatment effect.

Furthermore, the utility model discloses in, be equipped with the first monitoring point that is used for detecting waste gas air inlet temperature in the air intake department of multistage filter device 100, the temperature of air inlet is matchd to new fan 250's rotational speed, both can control the effect of heat transfer like this, can realize new fan 250's operation again and energy-conservingly.

In addition, a second monitoring point for detecting the temperature of the intake air is arranged in front of the cyclone tower 300, and when the temperature of the exhaust gas is detected to be abnormally too high, the front multistage filtering device 100 and the cleaning spray head of the gas-gas heat exchanger 200 are simultaneously opened to extinguish the fire.

In addition, still be equipped with the third monitoring point that is used for detecting the smell at the row mouth department of active mud scrubbing tower 500, when detecting to discharge stink or smell unusual, throw in biological mud in the active mud scrubbing tower 500 automatically through the biological filter to guarantee the treatment effect, record simultaneously and throw in time and throw in the volume.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A high-temperature printing and dyeing waste gas treatment device comprises a multistage filtering device, a gas-gas heat exchange device, a cyclone tower, a Venturi scrubbing tower and an active mud scrubbing tower which are communicated in sequence,

2. The high temperature printing and dyeing exhaust gas treatment device according to claim 1, wherein the venturi scrubber is provided with micro-holes or grids for forming micro-bubbles at the outlet of the conical inclined nozzle.

3. The high-temperature printing and dyeing exhaust gas treatment equipment according to claim 1, wherein in the activated sludge washing tower, the tail end of the activated sludge pipeline is divided into a plurality of activated sludge branch pipes, the activated sludge branch pipes are led into the tower body and are sequentially arranged from bottom to top, and the activated sludge spray heads are respectively arranged on the activated sludge branch pipes.

4. The high-temperature printing and dyeing exhaust gas treatment equipment according to claim 1, wherein the multistage filtering device comprises a filtering shell, one end of the filtering shell is provided with an exhaust gas inlet, the other end of the filtering shell is provided with an exhaust gas outlet, an air channel for exhaust gas to pass through is arranged in the filtering shell, a decontamination mechanism, a cleaning mechanism and at least two filtering mechanisms are arranged in the air channel, and the bottom of the filtering shell is provided with a pollutant collector communicated with the air channel;

5. The high-temperature printing and dyeing exhaust gas treatment device according to claim 4, wherein the decontamination mechanism comprises a motor, a driving fluted disc, a driven fluted disc and a chain sleeved on the driving fluted disc and the driven fluted disc, the motor is arranged on the outer wall of the filter housing and used for driving the driving fluted disc to rotate, and a plurality of brushes are arranged on the chain.

6. The high-temperature printing and dyeing exhaust gas treatment equipment according to claim 4, wherein the gas-gas heat exchange device comprises a hollow heat exchange shell consisting of a top plate, a bottom plate and a pair of side plates, a partition plate is arranged in the middle of the heat exchange shell, the partition plate divides an inner cavity of the heat exchange shell into an upper air channel and a lower air channel, the lower air channel is communicated with an exhaust gas outlet of the multistage filtering device and is used for allowing high-temperature printing and dyeing exhaust gas to pass through, and the upper air channel is used for allowing low-temperature fresh air to pass through;

7. The high temperature printing and dyeing exhaust gas treatment device according to claim 6, wherein the bottom plate and the pair of side plates are each provided with a detachable heat insulation plate, and the detachable heat insulation plate comprises an inner protection layer, an outer protection layer and a heat insulation layer adhered between the inner protection layer and the outer protection layer; and the periphery of the outer protective layer is integrally formed with a connecting lug, and the connecting lug is fixed on the top plate or the side plate through a screw.

8. The high-temperature printing and dyeing waste gas treatment equipment according to claim 6, wherein a white steam removing mechanism is arranged at the outlet of the tower body in the activated sludge washing tower, and a fresh air fan is connected to the air outlet of the upper air duct of the air-air heat exchange device and leads to the white steam removing mechanism.

9. The high-temperature printing and dyeing waste gas treatment equipment according to claim 1, wherein the cyclone tower comprises an outer tower body, a waste gas inlet communicated with a lower air duct of the gas-gas heat exchange device is arranged on the side surface of the outer tower body, a waste gas outlet is arranged at the top of the outer tower body, and the cyclone tower body, the adsorption device, the spraying device and the water removal device are arranged inside the outer tower body; the waste gas inlet is tangentially connected to the side surface of the cyclone tower body through a waste gas guide pipe, and a cyclone plate is arranged in the cyclone tower body to generate rotary airflow; the top end of the cyclone tower body is fixed on the inner wall of the outer tower body through an oblique guide plate, the oblique guide plate is provided with a plurality of arch-shaped bulges along the circumferential direction, and a guide groove for guiding the flowing of the cleaning liquid is formed between every two adjacent arch-shaped bulges; the adsorption device is arranged above the cyclone tower body and comprises a filler screen frame and a filler layer filled in the screen frame; the spraying device is arranged above the adsorption device and comprises a spraying water pipe and a plurality of spraying heads arranged on the spraying water pipe; the dewatering device is arranged above the spraying device and comprises a dewatering screen frame and a dewatering layer filled in the dewatering screen frame.

10. The high-temperature printing and dyeing waste gas treatment equipment as recited in claim 1, characterized in that the high-temperature printing and dyeing waste gas treatment equipment further comprises an oil and dust collecting tank, and the oil and dust collecting tank is respectively communicated with the waste liquid port of the gas-gas heat exchange device, the bottom of the outer tower body of the cyclone tower and the bottom of the venturi scrubber through guide pipes.