CN213286185U

CN213286185U - Pretreatment device for waste gas containing glue

Info

Publication number: CN213286185U
Application number: CN202021560481.9U
Authority: CN
Inventors: 张海滨
Original assignee: Kunshan Yiruite Environmental Protection Technology Co ltd
Current assignee: Kunshan Yiruite Environmental Protection Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-05-28
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a glue-containing waste gas pretreatment device, which comprises an input port, an air collecting box, a fan, a first filter box, a second filter box and an output port; the input port, the air collecting box, the first filter box and the second filter box are sequentially connected with the output port, and the fan is arranged between the air outlet of the air collecting box and the air inlet of the first filter box; the first filtering tank filters soluble substances, a first sprayer, a filtering filler layer and a first water receiving tank are arranged in the first filtering tank from top to bottom, and the waste gas passes through the filtering filler layer from bottom to top in the first filtering tank; the second filter tank filters water vapor. The device can remove the curing agent component in the waste gas with high efficiency to greatly reduce incinerator's fault rate and maintenance cost.

Description

Pretreatment device for waste gas containing glue

Technical Field

The utility model relates to an environmental protection equipment field especially, relates to an exhaust treatment device.

Background

In the production process of the copper foil substrate of the printed circuit board, a large amount of volatile organic solvent gas can be generated, and the main components of the volatile organic solvent gas comprise acetone, propylene glycol monomethyl ether, butanone, cyclohexanone, toluene, propylene glycol methyl ether acetate, dimethyl formamide (DMF) and the like; such gases pollute the environment and are harmful to human bodies, and can be discharged into the external atmosphere after being treated; the treatment method commonly adopted in the industry at present is to directly burn the harmful gas by an incinerator to remove harmful components.

However, because the volatile organic solvent contains the curing agent, the curing agent is condensed to form jelly when meeting with the curing agent, and the waste gas containing the jelly is called as the waste gas containing the jelly; the colloid can be deposited on the positions of incinerator pipelines, valves, fans, furnace chambers and the like, so that the incinerator can not burn sufficiently to generate black smoke, odor and the like, and the colloid can even stick the valves in the equipment to cause the valves to be incapable of acting; these situations not only are inconvenient for the operation and use of the equipment, but also form certain safety hazards.

For the problems, measures such as heat preservation of air inlet and outlet pipelines, installation of an induced draft fan and the like are generally adopted in the industry at present, and meanwhile, the parts which are easy to glue are manually cleaned when the machine is stopped for maintenance; this is time and labor consuming, and requires frequent downtime for maintenance, which is inconvenient for production.

Chinese patent specification CN103908845B discloses a solvent purification device capable of pre-treating the caking, which adsorbs the curing agent by arranging a filter screen, so that the components of the curing agent are caked on the filter screen when passing through the filter screen, thereby reducing the content of the curing agent in the gas sent to the incinerator; however, the efficiency of passively adsorbing the curing agent only through the filter screen is low, the device disclosed by the patent is difficult to greatly reduce the content of the curing agent in the exhaust gas in the actual use process, and the obtained technical effect is difficult to satisfy.

SUMMERY OF THE UTILITY MODEL

To the problem, an object of the utility model is to provide a contain gluey exhaust gas preprocessing device, the curing agent composition in the waste gas can high-efficiently be got rid of to the device to greatly reduce incinerator's fault rate and maintenance cost.

The utility model provides a technical scheme that its technical problem adopted is: the pretreatment device for the waste gas containing the glue comprises an input port, an air collecting box, a fan, a first filter box, a second filter box and an output port; the input port, the air collecting box, the first filter box and the second filter box are sequentially connected with the output port, and the fan is arranged between the air outlet of the air collecting box and the air inlet of the first filter box; the first filtering tank filters soluble substances, a first sprayer, a filtering filler layer and a first water receiving tank are arranged in the first filtering tank from top to bottom, and the waste gas passes through the filtering filler layer from bottom to top in the first filtering tank; the second filter tank filters water vapor.

The beneficial effects of this technical scheme lie in: when the rubber-containing waste gas pretreatment device is used, after high-speed waste gas in a workshop enters the air collecting box from the input port, the wind speed is suddenly reduced, and large-particle rubber and liquid drops in the waste gas are partially settled in the air collecting box; the waste gas in the air collecting box is pumped into the first filter box by the fan, and because the surface area of the inner part of the gap structure of the filter packing layer in the first filter box is extremely large, the first sprayer uniformly sprays water on the surface of the filter packing layer, so that the passing waste gas and the water body have extremely large contact area, and under the full contact of gas and liquid, the curing agent jelly and the components dissolved in the water in the waste gas are dissolved in the water and intercepted by the filter packing layer; then the waste gas enters a second filter tank to filter water vapor and is finally output from an output port; therefore, the device can efficiently remove the curing agent component in the waste gas, thereby greatly reducing the failure rate and the maintenance cost of the incinerator.

Preferably, the wind collecting box is provided with a wind speed adjusting device, and the wind speed of the high-speed waste gas after entering the wind collecting box can be adjusted through the wind speed adjusting device, so that the sedimentation efficiency of large-particle jelly and liquid drops in the waste gas in the wind collecting box is changed.

Preferably, the filtering filler layer comprises a coarse filtering layer and a fine filtering layer from bottom to top; waste gas filters the jelly of great granule in the coarse filtration layer earlier, carries out the meticulous filtration in getting into the fine filtration layer again, and the secondary filter not only can improve total filter effect from this, has also increased the life who filters the packing layer simultaneously, has reduced use cost.

Further, the coarse filter layer is a intalox saddle ring filler layer, and the fine filter layer is a pall ring filler layer.

Preferably, the first sprayer is communicated with the first water receiving tank through a pipeline, a spray water pump is arranged in the pipeline, and water in the first water receiving tank is pumped to the first sprayer through the spray water pump; therefore, the water sprayed by the first sprayer can be recycled, and water resources are saved.

Preferably, a condenser and a demister are arranged in the second filter tank along the waste gas path; when waste gas passes through the condenser, the vapor in the waste gas receives the cold liquefaction and forms the water droplet, and the water droplet is intercepted by the defroster after when the defroster, reaches the effect of filtering steam from this.

Furthermore, the device also comprises a cooling water tower and a cooling water pump, wherein a water circulating pipeline is formed between the condenser and the cooling water tower through the cooling water pump, so that the condenser plays a role in continuously cooling the waste gas.

Furthermore, a second sprayer for spraying water downwards is arranged at the top in the second filter tank, and a second water receiving tank is arranged at the bottom; therefore, when the device is in a non-working state, the condenser and the demister in the second filter tank can be cleaned through the second sprayer.

Preferably, the air outlets of the first filter tank and the second filter tank are provided with water vapor filter screens, so that the filtering effect of water vapor contained in the waste gas is improved through multi-stage filtering.

Preferably, the device further comprises a control system, wherein the control system is connected with and controls various electric equipment, such as a fan, a water pump, an electric control valve and the like, so that automatic control of the electric equipment is realized.

Drawings

Fig. 1 is a process flow diagram of an embodiment of the present invention.

Detailed Description

The following description is directed to a preferred embodiment of the invention.

The pretreatment device for waste gas containing glue shown in fig. 1 comprises an input port 1, a wind collecting box 2, a fan 3, a first filter box 4, a second filter box 5 and an output port 6; the input port 1, the air collecting box 2, the first filter box 4, the second filter box 5 and the output port 6 are sequentially connected, and the fan 3 is arranged between the air outlet of the air collecting box 2 and the air inlet of the first filter box 4; the first filtering box 4 filters soluble substances, a first sprayer 41, a filtering filler layer 42 and a first water receiving box 43 are arranged inside the first filtering box 4 from top to bottom, and the waste gas passes through the filtering filler layer 42 from bottom to top in the first filtering box 4; the second filtering tank 5 filters moisture.

Wherein, the wind speed adjusting device is arranged on the wind collecting box 2, so that the filtering wind speed is less than 5m/s, and when the waste gas (the wind speed is more than 15 m/s) generated in the gluing workshop enters the wind collecting box 2, the wind speed drops suddenly, which causes the large particle jelly and liquid drop part in the gas to settle in the wind collecting box 2; in addition, the air collecting box 2 is provided with an access door and a sewage discharge pipeline, and the sediment can be conveniently cleaned.

Wherein, the fan 3 is a centrifugal fan and is driven by a variable frequency motor; in addition, the fan 3 is linked with a negative pressure transmitter arranged at the outlet of the air collecting box 2, and the power of the variable frequency motor is automatically adjusted through a program, so that the interior of the air collecting box 2 is kept in a micro-negative pressure state, and waste gas leakage is prevented.

When the pretreatment device for waste gas containing glue is used, after high-speed waste gas in a workshop enters the air collecting box 2 from the input port 1, the wind speed is suddenly reduced, and large-particle jelly and liquid drops in the waste gas are partially settled in the air collecting box 2; then the fan 3 pumps the waste gas in the air collecting box 2 into the first filter box 4, because the internal surface area of the gap structure of the filter packing layer 42 in the first filter box 4 is extremely large, the first sprayer 41 uniformly sprays water on the surface of the filter packing layer 42, so that the passing waste gas and the water body have an extremely large contact area, and under the full contact of gas and liquid, the curing agent jelly and the components dissolved in the water in the waste gas are dissolved in the water and intercepted by the filter packing layer 42; then the waste gas enters a second filter tank 5 to filter water vapor, and finally is output from an output port 6; therefore, the device can efficiently remove the curing agent component in the waste gas, thereby greatly reducing the failure rate and the maintenance cost of the incinerator.

In addition, the filtering filler layer 42 in this embodiment includes a ceramic intalox packing layer 421 and a stainless steel pall ring packing layer 422 from bottom to top, so that the exhaust gas passes through the intalox packing layer 421 and then passes through the pall ring packing layer 422.

The intalox saddle ring packing is a filtering material with larger void ratio; the pall ring is a novel filler, is improved aiming at some main defects of the raschig ring, and has the advantages of large flux, small resistance, high separation efficiency, large operation elasticity and the like; under the same pressure reduction, the processing capacity of the pall ring is more than 50 percent larger than that of the Raschig ring, and when the same processing capacity is met, the pressure reduction required by the pall ring can be reduced by half compared with that of the Raschig ring, and meanwhile, the mass transfer efficiency can be improved by 20 percent; the pall ring packing is provided with a plurality of windows on the wall of the ring, so that gas and liquid in the packed tower can freely pass through the windows, the distribution of the gas and the liquid in the packing layer is greatly improved compared with that of the Raschig ring, and particularly, the inner surface of the pall ring packing is easily wetted by the liquid, so that the inner surface is fully utilized.

In this embodiment, the difference of intalox saddle ring packing layer 421 and pall ring packing layer 422 lies in that pall ring packing layer 422's filter fineness is higher, and waste gas filters the jelly of great granule in intalox saddle ring packing layer 421 earlier, carries out meticulous filtration in reentrant pall ring packing layer 422, and secondary filter from this not only can improve total filter effect, has also increased the life-span of filtering packing layer 42 simultaneously, has reduced use cost.

Because the waste gas after passing through the first filter tank 4 and full contact of gas and liquid contains more water vapor, the waste gas is not suitable for being directly output to an incinerator, and therefore the water vapor in the waste gas needs to be filtered through the second filter tank 5.

A condenser 51 and a demister 52 are arranged in the second filter tank 5 along the waste gas path; the demister 52 can collect mist particles and liquid droplets entrained in the gas, when the gas flows through the demister 52 at a certain speed, the mist particles and the liquid droplets in the gas impact the blades of the demister 52 under the action of inertial impact to be collected and continuously converged to form water flow to fall, so that gas-liquid separation of the flowing gas is realized, and the gas does not contain the mist particles and the liquid droplets after passing through the demister 52; the device also comprises a cooling water tower 53 and a cooling water pump 54, and a cooling water circulating pipeline is formed between the condenser 51 and the cooling water tower 53 through the cooling water pump 54; when the exhaust gas passes through the condenser 51, the water vapor in the exhaust gas is cooled and liquefied to form small water droplets, and the small water droplets are intercepted by the demister 52 when passing through the demister 52, so that the second filter tank 5 achieves the effect of filtering water vapor.

It should be noted that the second filtering tank 5 is internally provided with a condenser 51 and a demister 52 for filtering water vapor, but the invention is not limited to this embodiment, and any embodiment capable of achieving the technical purpose is included in the protection scope of the present patent.

In addition, a second sprayer 55 for spraying water downwards is arranged at the top part in the second filter tank 5, and a second water receiving tank 56 is arranged at the bottom part; therefore, when the device is in a non-working state, the equipment in the second filter box 5 can be cleaned by the second sprayer 55, so that the working efficiency of the equipment is prevented from being influenced by the dirt and impurities which are polluted in the working process.

In the first filtering tank 4, the first sprayer 41 is communicated with the first water receiving tank 43 through a pipeline, a spray water pump 44 is arranged in the pipeline, and the water body in the first water receiving tank 43 is pumped to the first sprayer 41 through the spray water pump 44, so that the water body sprayed by the first sprayer 41 can be recycled, and the water body is required to be continuously sprayed by the first sprayer 41 when the device works, so that the water resource can be greatly saved; in the second filter tank 5, the second sprayer 55 is sprayed by externally connected washing water, so that the cleaning effect on the internal equipment of the second filter tank 5 is ensured, and because the second sprayer 55 in the second filter tank 5 is not always opened and is only opened when washing is needed, the design does not cause great waste of water resources; the intalox saddle ring filler layer 421 and the pall ring filler layer 422 after being used for a period of time can be cleaned regularly and can be reused after being soaked and cleaned by solvent.

In addition, in this embodiment, the apparatus further includes a sewage treatment station 7, where the sewage treatment station 7 is communicated with the first water receiving tank 43 and the second water receiving tank 56, and is configured to receive and treat wastewater discharged from the first water receiving tank 43 and the second water receiving tank 56; since the glue concentration of the water in the first water receiving tank 43 is gradually increased after a period of recycling, if the water is continuously used, the glue removing effect of the device is gradually reduced, and therefore, the wastewater still needs to be periodically discharged and a new water body needs to be supplemented.

In addition. The water

vapor filter screens

45 and 57 are arranged at the outlets of the first filter tank 4 and the second filter tank 5, so that the filtering effect of water vapor contained in the waste gas is further improved through multi-stage filtering; after the multi-stage filtration of water vapor, the water content of the finally output waste gas is less than 5%.

In this embodiment, a water level monitor and a water replenishing system 9 are further included; although the water bodies in the first water receiving tank 43 and the cooling water tower 53 can be recycled in the embodiment, the water body loss can be avoided in the using process, so that the liquid level is reduced; the water level monitors are arranged in the water tank 43 and the cooling water tower 53, and when the water level is lower than a set value, the water is supplemented to the water tank 43 and the cooling water tower 53 through the water supplementing system 9; in addition, after the wastewater in the first water receiving tank 43 is discharged to the wastewater treatment station 7, the water may be replenished through the water replenishing system 9.

In the embodiment, a manual valve and an electric control valve are arranged in a pipeline for connecting each device to control the on-off; because the electric control valve has the possibility of failure under the conditions of power failure, program collapse and the like, in order to ensure safety, a manual valve with the same function is arranged beside the electric control valve so as to deal with the conditions.

The device also comprises a control system 8, wherein the control system 8 is connected with each electric device and used for controlling the spray water pump 44, the electric control valve, the water level monitor, the fan 3 and the like, so that the automatic control of the device is realized in the operation of the device, and the manual operation is reduced.

In general, the embodiment of the rubber-containing waste gas pretreatment device can remove more than 90% of curing agent jelly and water-soluble organic gas in waste gas through multi-stage filtration, thereby greatly reducing the failure rate and the shutdown maintenance time of the incinerator, reducing the use and maintenance cost through the recycling of fillers and having practical value.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is intended to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

Claims

1. The utility model provides a contain gluey waste gas preprocessing device which characterized in that: the device comprises an input port (1), an air collecting box (2), a fan (3), a first filter box (4), a second filter box (5) and an output port (6); the input port (1), the air collecting box (2), the first filter box (4) and the second filter box (5) are sequentially connected with the output port (6), and the fan (3) is arranged between the air outlet of the air collecting box (2) and the air inlet of the first filter box (4); the first filtering box (4) filters soluble substances, a first sprayer (41), a filtering filler layer (42) and a first water receiving box (43) are arranged inside the first filtering box from top to bottom, and the waste gas passes through the filtering filler layer (42) from bottom to top in the first filtering box (4); the second filtering tank (5) filters water vapor.

2. The apparatus of claim 1, wherein: the air collecting box (2) is provided with an air speed adjusting device.

3. The apparatus of claim 1, wherein: the filtering filler layer (42) comprises a coarse filtering layer and a fine filtering layer from bottom to top.

4. The apparatus of claim 3, wherein: the coarse filtering layer is a intalox saddle ring filler layer (421), and the fine filtering layer is a pall ring filler layer (422).

5. The apparatus of claim 1, wherein: the first sprayer (41) is communicated with the first water receiving tank (43) through a pipeline, a spray water pump (44) is arranged in the pipeline, and water inside the first water receiving tank (43) is pumped to the first sprayer (41) through the spray water pump (44).

6. The apparatus of claim 1, wherein: a condenser (51) and a demister (52) are sequentially arranged in the second filtering tank (5) along the waste gas path.

7. The apparatus of claim 6, wherein: the condenser is characterized by further comprising a cooling water tower (53) and a cooling water pump (54), wherein a water circulation pipeline is formed between the condenser (51) and the cooling water tower (53) through the cooling water pump (54).

8. The apparatus of claim 6, wherein: the top in the second filter tank (5) is provided with a second sprayer (55), and the bottom is provided with a second water receiving tank (56).

9. The apparatus of claim 1, wherein: and the air outlets of the first filtering tank (4) and the second filtering tank (5) are respectively provided with a water vapor filtering net (45) and a water vapor filtering net (57).

10. The apparatus of claim 1, wherein: the device also comprises a control system (8), wherein the control system (8) is connected with and controls each electric device in the device.