CN209934332U - VOCs synthesizes treatment system with desulfurization dust removal function - Google Patents

Abstract

The utility model discloses a VOCs comprehensive treatment system with desulfurization and dust removal function, comprising a water curtain dust collector, a pulse DC corona desulfurization by-product collecting device, a pulse corona treatment VOCs device and an activated carbon adsorber. The gas outlet is connected to the inlet of the pulsed DC corona desulfurization by-product collection device, the outlet of the pulsed DC corona desulfurization by-product collection device is connected to the inlet of the pulsed corona treatment VOCs device, and the outlet of the inlet of the pulsed corona treatment VOCs device Connected to activated carbon adsorber. The utility model uses together a water curtain dust collector, a pulse DC corona desulfurization by-product collecting device, a pulse corona treatment VOCs device and an activated carbon adsorber, which simplifies the overall device structure and improves the performance, thereby improving the waste gas treatment effect.

Description

A VOCs comprehensive treatment system with desulfurization and dust removal function

technical field

The utility model relates to a waste gas purification technology, in particular to a VOCs comprehensive treatment system with the function of desulfurization and dust removal.

Background technique

Since the Industrial Revolution, the more familiar sources of air pollution are mainly from petroleum and chemical production processes, thermal power generation, etc. In actual industrial emissions, a variety of air pollutants are often entrained, and the common steps are: dust removal, acid mist removal, alkali washing, desulfurization, etc. Among the gaseous harmful substances in the air, volatile organic compounds (VOCs) and sulfur dioxide are relatively common and have a wide range of sources, involving many industries. They not only directly endanger the health of surrounding residents, but also promote the generation of photochemical smog and haze in the city, which indirectly affects the Regional air quality.

Corona discharge is to load a voltage on an electrode with a small radius of curvature (such as a needle electrode or a thin wire electrode). When the high-energy electrons collide with N ₂ , O ₂ , and H ₂ O in the background gas, they will generate free radicals such as N, O, OH, and O _3. These free radicals The groups generally have more active chemical properties, which can oxidatively decompose VOCs and SO ₂ . Taking the pulse corona plasma treatment technology to treat SO ₂ as an example: the high-energy electrons generated by the high-voltage pulse power supply are used to activate the sulfur dioxide (SO ₂ ) in the coal-fired flue gas, and ammonia is added as a reactant to generate ammonium sulfate ((NH ₄ ) ₂ SO ₄ ) fertilizer, which can recover sulfur, but if there is fly ash, the by-product will lose its use value. Take the pulse corona plasma treatment technology for the treatment of VOCs as an example: although the treatment with a single pulse corona device has the advantages of low energy consumption and less by-products, the removal rate generally does not exceed 70%, so there will be a lot of VOCs that cannot be removed. , and it is difficult to improve the removal rate of a single device. In addition to the pulse corona treatment technology, the industry also uses activated carbon adsorbers to purify VOCs; in the original adsorber, due to the moisture in the industrial waste gas, the activated carbon is easy to agglomerate and adhere to the wall due to moisture; when the activated carbon needs to be replaced , Since the size of the adsorber is not small and generally fixed, the cleaning work will be very cumbersome.

Utility model content

The purpose of the utility model is to provide a VOCs comprehensive treatment system with the function of desulfurization and dust removal in order to overcome the above shortcomings of the prior art. This VOCs comprehensive treatment system with desulfurization and dust removal function solves the problem of single technology treatment defects.

The purpose of the utility model is achieved through the following technical solutions: the VOCs comprehensive treatment system with desulfurization and dust removal function includes a water curtain dust collector, a pulsed DC corona desulfurization by-product collection device, a pulsed corona treatment VOCs device and an activated carbon adsorber. The air outlet of the water curtain dust collector is connected to the inlet of the pulsed DC corona desulfurization by-product collection device, the outlet of the pulsed DC corona desulfurization by-product collection device is connected to the inlet of the pulsed corona treatment VOCs device, and the pulsed corona treatment The inlet and outlet of the VOCs device are connected to the activated carbon adsorber.

Preferably, the water curtain dust collector comprises a dust collector casing, a base, a cylindrical screen, a nozzle and an air intake pipe, the lower end of the dust collector casing is connected to the base, and the screen is installed in the dust collector casing , the upper and lower ends of the dust collector shell are respectively connected with a water inlet pipe and a water outlet pipe, the nozzle is installed on the water inlet pipe, and the nozzle is located above the screen; the air intake pipe is from the outside of the dust collector shell. It extends into the screen; the upper end of the dust collector shell is provided with an outlet pipe, which is connected to a pulse DC corona desulfurization by-product collecting device.

Preferably, the water curtain dust collector further includes a circulating pump, the lower end of the dust collector shell is provided with a water outlet pipe, the water outlet pipe is connected to the circulating pump through a three-way valve, and the water outlet of the circulating pump is connected to the water inlet pipe connect.

Preferably, the inner diameter of the lower end of the dust collector shell is gradually reduced, and a piston is arranged in the lower end of the dust collector; the cross section of the piston is I-shaped, and the piston includes a top plate, a connecting plate and a bottom plate, and the The top plate is connected with the bottom plate through the connecting plate, the bottom plate is sealedly connected with the inner wall of the dust collector shell, and there is a gap between the outer edge of the top plate and the inner wall of the dust collector shell.

Preferably, the pulsed DC corona desulfurization by-product collecting device includes a plurality of first discharge electrodes, a reaction chamber and an ash hopper, and both ends of the reaction chamber are respectively provided with an inlet end cap and an outlet end cap, and a plurality of The first discharge electrodes are all installed in the reaction chamber, and a plurality of first discharge electrodes are distributed along the axial direction of the reaction chamber; the ash hopper is connected to the lower end of the reaction chamber; the air inlet end cover is connected to the water curtain dust collector The gas outlet is connected to the gas outlet, the gas outlet end cap is connected to the inlet of the pulse corona treatment VOCs device, and the reaction chamber is provided with a first ground electrode plate.

Preferably, the pulsed DC corona desulfurization by-product collecting device further includes a brushing mechanism, the brushing mechanism includes a brush frame, a roller, a motor, a rope and a roller, the roller is installed on the reaction chamber, and the roller is installed In the reaction chamber, one end of the rope is connected to the drum, the other end of the rope is connected to the roller, the brush holder is connected to the rope, and the brush holder is located in the reaction chamber, and the first discharge electrode passes through The brush hole of the brush holder, the outer edge of the brush holder is connected with the first ground electrode plate; the motor is connected with the drum, and the reaction chamber is provided with a first ground electrode plate.

Preferably, the pulse corona treatment VOCs device includes a reaction chamber, a flange head, a circular arc head and a plurality of second discharge electrodes, the flange head and the circular plate head are respectively connected with the reaction chamber. The two ends are connected, and the reaction chamber is provided with a plurality of second ground electrode plates, wherein one second ground electrode plate divides the inner chamber of the reaction chamber into two upper reaction chambers and lower reaction chambers which are connected at one end. The second discharge electrodes are divided into two groups. The two groups of second discharge electrodes are respectively installed in the upper reaction chamber and the lower reaction chamber. The flange head is provided with a first connecting pipe and a second connecting pipe, and the first connecting pipe and the second connecting pipe Two pipes are respectively connected with the upper reaction chamber and the lower reaction chamber, the first pipe is connected with the pulse DC corona desulfurization by-product collecting device, and the second pipe is connected with the activated carbon adsorber.

Preferably, the activated carbon adsorber comprises an adsorption shell, an inner tank and a detachable cover, one end of the adsorption shell is provided with an adsorption inlet connected to the pulse corona treatment VOCs device, and the other end of the adsorption shell is provided with an exhaust port and a loading and unloading port, the inner tank is installed in the inner cavity of the adsorption shell, the adsorption inlet is communicated with the exhaust port through the inner tank, and the loading and unloading cover closes the loading and unloading port.

Preferably, the inner bladder includes a gallbladder shell, a honeycomb tube and a gallbladder cover with a vent hole, the gallbladder cover is connected to the open end of the gallbladder shell, and the gallbladder shell and the gallbladder cover form an adsorption cavity; the honeycomb tube It is installed in the adsorption chamber, and the honeycomb tube is communicated with the adsorption inlet through a communication tube; the inner wall of the bile shell and the outer wall of the honeycomb tube are filled with activated carbon.

Preferably, an air collecting cavity is provided between the end face of the exhaust end of the inner bladder and the assembling and dismounting cover, and the exhaust end of the inner bladder is communicated with the exhaust port through the air collecting chamber.

Compared with the prior art, the utility model has the following advantages:

1. The utility model is mainly composed of a water curtain dust collector, a pulse DC corona desulfurization by-product collection device, a pulse corona treatment VOCs device and an activated carbon adsorber. Water curtain dust collector, pulse DC corona desulfurization by-product collection device, pulse corona treatment VOCs device and activated carbon adsorber are used together to simplify the overall device structure and improve performance, thereby improving the exhaust gas treatment effect.

2. The water curtain dust collector in the utility model realizes dust removal and ammonia water circulation, the dust removal ensures the use value of the by-products collected later, and the ammonia water circulation saves the ammonia addition equipment of the desulfurization device, and can well control the concentration of ammonia gas ; Activated carbon adsorber assisted pulse corona treatment of VOCs further improved the removal rate.

3. The pulse corona treatment VOCs device of the present invention adopts a double-layer reaction structure, which can improve the VOCs removal rate without increasing the floor space and reduce the equipment cost.

4. When the activated carbon adsorber of the present invention needs to replace the activated carbon, the loading and unloading cover of the loading and unloading port is opened, the inner tank is drawn out, and then the inner tank is cleaned. Since the activated carbon is not in direct contact with the inner wall of the adsorption shell, there is no need to clean the shell, the shell and the pipeline can be fixed, and no need to move. Moreover, the volume of the inner tank is small, and the activated carbon can be dumped out like a trash can after opening the bile cover made of wire mesh, which is convenient for cleaning.

Description of drawings

FIG. 1 is a schematic structural diagram of the VOCs comprehensive treatment system with desulfurization and dust removal function of the present invention.

Figure 2 is a schematic structural diagram of the water curtain dust collector of the present invention.

Figure 3 is a schematic structural diagram of the device for collecting by-products of pulsed DC corona desulfurization of the present invention.

4 is a top view of the device for collecting by-products of pulsed DC corona desulfurization of the present invention.

5 is a schematic structural diagram of the ash brushing mechanism of the present invention.

FIG. 6 is a schematic structural diagram of the ash brushing frame of the present invention.

7 is a schematic structural diagram of the first discharge electrode of the present invention.

8 is a schematic structural diagram of the pulse corona treatment VOCs device of the present invention.

FIG. 9 is a cross-sectional view of the pulse corona treatment VOCs device of the present invention in the top direction.

10 is a cross-sectional view of the pulse corona treatment VOCs device of the present invention in the rear view direction.

11 is a schematic structural diagram of the second discharge electrode of the present invention.

Figure 12 is a schematic structural diagram of the activated carbon adsorber of the present invention. For the sake of clarity, the mounting groove at the bottom is not placed in the inner tank.

13 is a top view of the activated carbon adsorber of the present invention.

14 is a rear view of the activated carbon adsorber of the present invention. For the sake of clarity, the inner bladder on the upper left has not removed the lid, and the inner bladder is not placed in the installation slot at the lower left.

Figure 15 is a schematic structural diagram of the inner pot of the present invention.

Among them, 1 is the water curtain dust collector, 101 is the dust collector shell, 102 is the base, 103 is the screen, 104 is the nozzle, 105 is the intake pipe, 106 is the circulating pump, 107 is the three-way valve, 108 is the piston, 1081 is the top plate, 1082 is the connecting plate, 1083 is the bottom plate, 109 is the gas outlet connection, 1010 is the water inlet connection, 1011 is the water outlet connection, 2 is the pulse DC corona desulfurization by-product collection device, 201 is the first discharge electrode, and 202 is the reaction chamber 203 is the ash hopper, 204 is the air inlet end cover, 205 is the air outlet end cover, 206 is the first ground plate, 207 is the ash brushing mechanism, 2071 is the brush frame, 2072 is the drum, 2073 is the motor, and 2074 is the rope , 2075 is the roller, 2076 is the brush hole, 208 is the equalizing plate, 209 is the T-shaped rubber nut,

3 is the pulse corona treatment VOCs device, 301 is the reaction chamber, 302 is the flange head, 303 is the arc head, 304 is the second discharge electrode, 305 is the second ground plate, 306 is the upper reaction chamber, 307 is the lower reaction chamber, 308 is the card slot, 309 is the first pipe, 3010 is the second pipe, 4 is the activated carbon adsorber, 401 is the adsorption shell, 402 is the inner tank, 4021 is the bile shell, 4022 is the honeycomb tube, 4023 4024 is the suction chamber, 4025 is the connecting pipe, 4026 is the mounting plate, 403 is the loading and unloading cover, 404 is the suction inlet, 405 is the exhaust port, 406 is the loading and unloading port, 407 is the air collecting chamber, and 408 is the installation slot .

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the VOCs comprehensive treatment system with desulfurization and dust removal function includes a water curtain dust collector, a pulse DC corona desulfurization by-product collection device, a pulse corona treatment VOCs device and an activated carbon adsorber. The gas port is connected with the inlet of the pulsed DC corona desulfurization by-product collection device, the outlet of the pulsed DC corona desulfurization by-product collection device is connected with the inlet of the pulsed corona treatment VOCs device, and the outlet of the inlet of the pulsed corona treatment VOCs device is connected to Activated carbon adsorber connection.

As shown in Figure 2, the water curtain dust collector includes a dust collector shell, a base, a cylindrical screen, a nozzle and an air intake pipe. The lower end of the dust collector shell is connected to the base, and the screen is installed on the dust collector. In the casing of the dust collector, the upper and lower ends of the casing of the dust collector are respectively connected with a water inlet pipe and a water outlet pipe, the nozzle is installed on the water inlet pipe, and the nozzle is located above the screen; The outer side of the shell extends into the screen; the upper end of the dust collector shell is provided with an outlet pipe, which is connected to the pulse DC corona desulfurization by-product collecting device, that is, the outlet pipe and the inlet end cover.

Specifically, the screen mesh is made of stainless steel mesh, the plate-shaped stainless steel mesh is bent end to end to form a cylindrical screen mesh, and the outlet end of the intake nozzle is curved, so that the outlet of the intake nozzle faces, which makes the intake nozzle face. The outlet of the gas pipe is arranged opposite to the injection port of the nozzle. Then the ammonia water sprayed from the nozzle of the nozzle opens into a water curtain. After the exhaust gas flows out from the outlet of the intake pipe, it rises to the water outlet pipe. The exhaust gas passes through the water curtain, and the dust in the exhaust gas adheres to the ammonia to form. The dust particles, together with the ammonia water, fall to the lower end of the dust collector shell, that is, to the piston.

The water curtain dust collector also includes a circulating pump, the lower end of the dust collector shell is provided with a water outlet pipe, the water outlet pipe is connected to the circulating pump through a three-way valve, and the water outlet of the circulating pump is connected to the water inlet pipe. The circulating pump, the water inlet pipe, the dust collector shell and the water outlet pipe form a circulating structure, and the circulating pump pumps the ammonia water falling to the lower end of the dust collector shell to the water inlet pipe, which allows the ammonia water to be reused, improves the utilization rate of ammonia water, and reduces the waste.

The inner diameter of the lower end of the dust collector shell gradually decreases, and the lower end of the dust collector is provided with a piston. The specific piston is made of rubber, which makes the piston better seal the dust collector housing and avoid leakage. At the same time, the inner diameter of the lower end of the dust collector shell gradually decreases, which facilitates the collection of ammonia water and dust particles.

The section of the piston is I-shaped, the piston includes a top plate, a connecting plate and a bottom plate, the top plate is connected with the bottom plate through the connecting plate, the bottom plate is sealed with the inner wall of the dust collector shell, and the outer edge of the top plate is connected with the bottom plate. There is a space between the inner walls of the dust collector shell. The structure is simple, and the falling dust particles are collected between the top plate and the bottom plate. When the circulating pump draws the ammonia water, the dust is avoided to be taken out together, so as to ensure the quality of the recovered ammonia water.

As shown in FIG. 3 and FIG. 4 , the pulsed DC corona desulfurization by-product collection device includes a plurality of first discharge electrodes, a reaction chamber and an ash hopper. The two ends of the reaction chamber are respectively provided with inlet end caps and ash hoppers. The gas outlet end cover, a plurality of first discharge electrodes are installed in the reaction chamber, and the plurality of first discharge electrodes are distributed along the axial direction of the reaction chamber; the ash hopper is connected with the lower end of the reaction chamber; the inlet end The cover is connected to the air outlet of the water curtain dust collector (that is, the air inlet end cap is connected to the air outlet pipe), and the air outlet end cover is connected to the inlet of the pulse corona treatment VOCs device (that is, the air outlet end cover is connected to the first pipe), so The reaction chamber is provided with a first ground electrode plate. Wherein, the number of the first ground electrode plates is two groups, and the two first ground electrode plates are installed on the inner walls on both sides of the reaction chamber. As shown in FIG. 3 and FIG. 7 , the first discharge electrode includes a screw part and an electrode part, the screw part is connected with the top of the reaction chamber, the electrode part is connected with the screw part, and the outer surface of the electrode part is connected to the top of the reaction chamber. With fine teeth. The threaded portion of the first discharge electrode at the upper end is mounted on the top of the reaction chamber by a T-shaped rubber nut, and the electrode portion of the first discharge electrode is located in the reaction chamber. When working, a plurality of first discharge electrodes and two sets of grounding plates are connected to the power supply in parallel, and there are two power supplies, one of which is a high-voltage narrow pulse power supply, and the other is a DC power supply. When the high-voltage narrow-pulse power supply discharges, the high-voltage narrow-pulse power supply can generate a voltage waveform whose rise time is less than 100ns, the pulse width is less than 200-500ns, and the repetition frequency is 50-20OHz, so as to ensure that the first discharge electrode performs corona pulse treatment on the exhaust gas. When the DC power supply is discharged, the greater the DC base voltage, the higher the collection efficiency, but in order to avoid spark discharge, the voltage of the DC power supply is controlled to be below the critical breakdown voltage. The electrode part of the first discharge electrode is provided with serrations, which can increase the outer surface area of the electrode part, so that the electrode part can contact with more waste, so as to further improve the reaction efficiency of the exhaust gas.

As shown in FIG. 3 to FIG. 6 , the pulsed DC corona desulfurization by-product collection device further includes a brushing mechanism, and the brushing mechanism includes a brush frame, a roller, a motor, a rope and a roller, and the roller is installed in the reaction chamber. Above, the roller is installed in the reaction chamber, one end of the rope is connected to the drum, the other end of the rope is connected to the roller, the brush holder is connected to the rope, and the brush holder is located in the reaction chamber, the The first discharge electrode passes through the brush hole of the brush holder, and the outer edge of the brush holder is connected with the first ground electrode plate; the motor is connected with the drum. The by-products adhering to the surface of the first discharge electrode and the first grounding electrode plate are scraped off to the ash hopper by the ash brushing mechanism, which not only improves the recovery efficiency of the by-products, but also ensures the safety of the first discharge electrode and the first grounding electrode plate. work performance.

A flow equalizing plate is arranged between the reaction chamber and the inlet end cover. The equalizing plate can effectively control the speed and distribution of the exhaust gas entering the reaction chamber, and improve the reaction efficiency of the exhaust gas.

As shown in FIG. 8 to FIG. 10 , the pulse corona treatment VOCs device includes a reaction chamber, a flange head, a circular arc head and a plurality of second discharge electrodes. The flange head and the circular plate head They are respectively connected to both ends of the reaction chamber, and the reaction chamber is provided with a plurality of second grounding plates, wherein one second grounding plate separates the inner cavity of the reaction chamber into two upper reaction chambers and The lower reaction chamber, the plurality of second discharge electrodes are divided into two groups, the two groups of second discharge electrodes are respectively installed in the upper reaction chamber and the lower reaction chamber, the flange head is provided with a first connecting pipe and a second connecting pipe, and the The first connecting pipe and the second connecting pipe are respectively connected with the upper reaction chamber and the lower reaction chamber, the first connecting pipe is connected with the pulsed DC corona desulfurization by-product collecting device, and the second connecting pipe is connected with the activated carbon adsorber (that is, the second connecting pipe is connected with the activated carbon adsorber). suction inlet connection). Specifically, three second grounding plates are used, and these three second grounding plates are distributed in the upper, middle and lower parts of the reaction chamber, that is, the inner wall of the reaction chamber is provided with a slot, and one of the second grounding plates It is installed in the reaction chamber through the card slot. The other two second ground electrode plates are respectively mounted on the upper end and the lower end of the reaction chamber through bolts. This uses one of the second grounding plates to separate the inner cavity of the reaction chamber into an upper reaction chamber and a lower reaction chamber, and one end of the upper reaction chamber and the lower reaction chamber are connected, so that the exhaust gas enters the pulse corona treatment VOCs device and then recirculates. Outflow, it needs to pass through the first nozzle, the upper reaction chamber, the lower reaction chamber and the second nozzle in sequence, which allows the exhaust gas to travel enough paths, so that the exhaust gas can fully react and improve the reaction efficiency. In actual work, a plurality of second discharge electrodes and three second ground plates are connected to a high-voltage narrow pulse power supply in parallel to ensure that the second discharge electrodes and three second ground plates can work effectively. As shown in FIG. 11 , the structure of the second discharge electrode is similar to that of the first discharge electrode, that is, the second discharge electrode also has a threaded portion and an electrode portion, and the outer surface of the electrode portion is provided with serrations. The only difference between the two is that the second discharge electrode has two threaded portions, while the first discharge electrode has one threaded portion. The two threaded portions of the second discharge electrode are located at two portions of the electrode portion of the second discharge electrode, which ensures the stability of the second discharge electrode being installed in the reaction chamber. The two threaded portions of the second discharge electrode are mounted on both sides of the reaction chamber through T-shaped rubber nuts.

As shown in Fig. 12 to Fig. 14, the activated carbon adsorber includes an adsorption shell, an inner tank and a detachable cover. One end of the adsorption shell is provided with an adsorption inlet connected to the pulse corona treatment VOCs device, and the other side of the adsorption shell is provided One end is provided with an exhaust port and a loading and unloading port, the inner tank is installed in the inner cavity of the adsorption shell, the adsorption inlet is communicated with the exhaust port through the inner tank, and the loading and unloading cover closes the loading and unloading port. The inner cavity of the adsorption shell is provided with a plurality of installation grooves, the number of the inner pots is equal to the number of the installation grooves, and the inner pots are inserted into the installation grooves. The specific number of the inner tank is four, and the four installation grooves are distributed in the inner cavity of the adsorption shell in a field shape. The structure is simple, and the maintenance of the activated carbon adsorber is convenient.

As shown in FIG. 15 , the inner bladder includes a gallbladder shell, a honeycomb tube and a gallbladder cover with a vent hole, the gallbladder cover is connected with the open end of the gallbladder shell, and the gallbladder shell and the gallbladder cover form an adsorption cavity; The honeycomb tube is installed in the adsorption cavity, and the honeycomb tube is communicated with the adsorption inlet through a communication tube; the inner wall of the bile shell and the outer wall of the honeycomb tube are filled with activated carbon. Specifically, the tube wall of the honeycomb tube has closely arranged small holes to form a honeycomb structure, which can ensure the strength of the honeycomb tube, and at the same time, the small holes can not only allow the gas to pass through, but also prevent the activated carbon in the bile shell from entering the honeycomb tube. . After the exhaust gas enters the adsorption shell from the adsorption inlet, and then passes through the communication pipe and the honeycomb pipe in turn, and then the exhaust gas passes through the activated carbon and enters the gas collecting chamber, the remaining VOCs in the exhaust gas are adsorbed on the activated carbon, so that the exhaust gas enters the collecting chamber. When the gas cavity is used, the gas that can meet the emission standard is discharged from the exhaust port. In order to ensure the stability of the connecting pipe, the connecting pipe is fixed in the gallbladder through the mounting plate made of iron plate.

An air collecting cavity is provided between the end face of the exhaust end of the inner liner and the loading and unloading cover, and the exhaust end of the inner liner communicates with the exhaust port through the air collecting cavity. The gas flowing out from each inner tank is collected in the gas collection chamber and discharged from the exhaust port together, which can reduce the energy consumption of the suction fan.

The working process of the VOCs comprehensive treatment system with desulfurization and dust removal function is as follows:

The exhaust gas enters the water curtain dust collector, and after the exhaust gas is filtered to remove dust, it enters the pulse DC corona desulfurization by-product collection device for pulse corona treatment of SO ₂ to remove SO ₂ and recover the generated by-products; the exhaust gas from which SO ₂ has been removed enters A pulse corona treatment VOCs device is used to remove most of the VOCs, and then enters the activated carbon adsorber to adsorb the remaining VOCs, and the purified gas is discharged from the exhaust port of the activated carbon adsorber.

The specific working process of the water curtain dust collector is as follows: the exhaust gas enters the screen of the water curtain dust collector through the intake nozzle, at this time, the dilute ammonia water enters from the water inlet nozzle, and is sprayed down through the high-pressure nozzle. The net forms a water curtain; the dust-carrying waste gas is ejected vertically upwards from the intake pipe, and the dust is fully filtered by the water curtain, and the dust-removed waste gas flows out from the gas outlet pipe; the dust-carrying ammonia water flows down to the upper end of the dust collector shell, Then the ammonia water is pumped to the water inlet pipe by the circulating pump for recycling; the dust particles formed by dust are accumulated between the two plates (ie the top plate and the bottom plate) of the piston. When these dust particles accumulate enough, the piston can be pulled from the base out to clear the dust particles between the two plates of the piston.

The specific working process of the pulse DC corona desulfurization by-product collection device is as follows: the dedusted exhaust gas enters the reaction chamber through the inlet end cover and the equalizing plate in turn, and the exhaust gas flows from the reaction chamber during the process of flowing into the reaction chamber. In the process of flowing to the gas outlet end cap, the first discharge electrode performs pulse corona treatment on the exhaust gas to generate active radicals and ions such as OH, HO ₂ , NH , NH ₂ , and N ₂ ⁺ , and SO ₂ in the exhaust gas is oxidized into SO ₃ , eventually producing ammonium sulfate by-product. The generated ammonium sulfate by-product is charged at a high voltage to be adsorbed on the first discharge electrode and the first ground plate. Then, the deposited ammonium sulfate by-product is removed by the ash brushing mechanism to scrape the ammonium sulfate by-product into the ash hopper for collection and recycling. Driven by the motor through the roller and the rope, the brush holder moves up and down to brush off the by-products adhering to the surface of the first discharge electrode and the first grounding plate, and is used on the grounding plate and the discharge electrode to remove the deposited by-products. Ammonium sulfate by-product. When the pulsed DC corona desulfurization by-product collecting device is in the discharge working state, the brush holder is located at the top of the reaction chamber and will not affect the reaction process.

The specific working process of the pulse corona treatment VOCs device is as follows: the desulfurized exhaust gas passes through the first pipe, the upper reaction chamber, the lower reaction chamber and the second pipe in sequence; The halo reaction generates active free radicals and ions such as OH, HO ₂ , N ₂ ⁺ , and reacts and decomposes most of the VOCs, thereby further purifying the exhaust gas. These further purified exhaust gases flow out from the second nozzle and enter the activated carbon adsorber.

The specific working process of the activated carbon adsorber is as follows: after entering the activated carbon adsorber, the exhaust gas flows into the corresponding honeycomb tube through each communication pipe. Because the honeycomb tube has dense pores, only gas can pass through. Air flows from the inside of the honeycomb tube into the gallbladder. Since the gallbladder is filled with activated carbon, the remaining VOCs in the exhaust gas are adsorbed by the activated carbon, so that the exhaust gas is purified in the final step to form a gas that meets the emission standard. Collected in the cavity, and finally sucked out from the exhaust port by the suction fan to be discharged to the atmosphere.

When it is necessary to replace the activated carbon, open the loading and unloading cover of the loading and unloading port, hold the handle of the gall cover with your hand to pull out the inner bladder, and then clean the inner bladder. Since the activated carbon is not in direct contact with the inner wall of the adsorption shell, there is no need to clean the adsorption shell. The volume of the inner tank is small, and after opening the cover of the inner tank, the activated carbon can be dumped out like a trash can, and it is easy to clean.

The above-mentioned specific embodiments are preferred embodiments of the present invention, and cannot limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solutions of the present invention are included in the present invention. within the scope of the new protection.

Claims (10)

1. The utility model provides a VOCs synthesizes treatment system with desulfurization dust removal function which characterized in that: including water curtain dust remover, pulse direct current corona desulfurization accessory substance collection device, pulse corona treatment VOCs device and activated carbon adsorption ware, the gas outlet of water curtain dust remover and the entry linkage of pulse direct current corona desulfurization accessory substance collection device, the export of pulse direct current corona desulfurization accessory substance collection device and the entry linkage of pulse corona treatment VOCs device, the export of the entry of pulse corona treatment VOCs device is connected with activated carbon adsorption ware.

2. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the water curtain dust remover comprises a dust remover shell, a base, a cylindrical screen, a spray head and an air inlet connecting pipe, wherein the lower end of the dust remover shell is connected with the base, the screen is arranged in the dust remover shell, the upper end and the lower end of the dust remover shell are respectively connected with the water inlet connecting pipe and the water outlet connecting pipe, the spray head is arranged on the water inlet connecting pipe, and the spray head is positioned above the screen; the air inlet connecting pipe extends into the screen mesh from the outer side of the dust remover shell; and an air outlet connecting pipe is arranged at the upper end of the dust remover shell and is connected with a pulse direct current corona desulfurization byproduct collecting device.

3. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 2, wherein: the water curtain dust remover further comprises a circulating pump, a water outlet connecting pipe is arranged at the lower end of the dust remover shell and connected with the circulating pump through a three-way valve, and a water outlet of the circulating pump is connected with the water inlet connecting pipe.

4. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 2, wherein: the inner diameter of the lower end of the dust remover shell is gradually reduced, and a piston is arranged in the lower end of the dust remover; the cross section of the piston is I-shaped, the piston comprises a top plate, a connecting plate and a bottom plate, the top plate is connected with the bottom plate through the connecting plate, the bottom plate is connected with the inner wall of the dust remover shell in a sealing mode, and a space is arranged between the outer edge of the top plate and the inner wall of the dust remover shell.

5. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the pulse direct current corona desulfurization byproduct collecting device comprises a plurality of first discharge electrodes, a reaction chamber and an ash bucket, wherein an air inlet end cover and an air outlet end cover are respectively arranged at two ends of the reaction chamber; the ash hopper is connected with the lower end of the reaction chamber; the air inlet end cover is connected with an air outlet of the water curtain dust remover, the air outlet end cover is connected with an inlet of the pulse corona treatment VOCs device, and a first grounding polar plate is arranged in the reaction chamber.

6. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 5, wherein: the device for collecting the byproducts of the pulse direct-current corona desulfurization further comprises an ash brushing mechanism, wherein the ash brushing mechanism comprises a brush holder, a roller, a motor, a rope and a roller, the roller is arranged on the reaction chamber, the roller is arranged in the reaction chamber, one end of the rope is connected with the roller, the other end of the rope is connected with the roller, the brush holder is connected with the rope, the brush holder is positioned in the reaction chamber, the first discharge electrode penetrates through a brush hole of the brush holder, and the outer edge of the brush holder is connected with a first grounding polar plate; the motor is connected with the roller.

7. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the pulse corona treatment VOCs device comprises a reaction cavity, a flange seal head, an arc seal head and a plurality of second discharge electrodes, wherein the flange seal head and the circular plate seal head are respectively connected with two ends of the reaction cavity, a plurality of second grounding polar plates are arranged in the reaction cavity, one second grounding polar plate separates an inner cavity of the reaction cavity into an upper reaction cavity and a lower reaction cavity, one end of the upper reaction cavity is communicated with one end of the lower reaction cavity, the plurality of second discharge electrodes are divided into two groups, the two groups of second discharge electrodes are respectively installed in the upper reaction cavity and the lower reaction cavity, the flange seal head is provided with a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are respectively connected with the upper reaction cavity and the lower reaction cavity, the first connecting pipe is connected with a pulse direct-current corona desulfurization byproduct collecting device, and the second connecting pipe is connected.

8. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the active carbon adsorber includes absorption shell, inner bag and loading and unloading lid, the one end of absorption shell is equipped with the absorption entry of being connected with pulse corona treatment VOCs device, the other end of absorption shell is equipped with gas vent and loading and unloading mouth, the inner bag is installed in the inner chamber of absorption shell, the absorption entry passes through inner bag and gas vent intercommunication, loading and unloading lid closure loading and unloading mouth.

9. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 8, wherein: the inner container comprises a container shell, a honeycomb tube and a container cover with an exhaust hole, the container cover is connected with the open end of the container shell, and the container shell and the container cover form an adsorption cavity; the honeycomb pipe is arranged in the adsorption cavity and is communicated with the adsorption inlet through a communicating pipe; activated carbon is filled between the inner wall of the liner shell and the outer wall of the honeycomb tube.

10. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 8, wherein: and a gas collection cavity is arranged between the end surface of the exhaust end of the inner container and the assembling and disassembling cover, and the exhaust end of the inner container is communicated with the exhaust port through the gas collection cavity.

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