A kind of polymorphic organic composite pollutant treatment equipment and method

Abstract

A treatment device and method for polymorphic organic composite pollutants, belonging to the field of environmental protection technology, the equipment includes a smoke hood, a cooling pipe, a smoke liquid-solid capture device, an induced draft fan, a smoke adsorption device and a chimney. The method of the present invention uses tap water to drip and cool the outer wall, and adjusts the flowing water volume by adjusting the liquid level height of the annular drip groove. The water evaporates and reduces the temperature of the pipe wall. It does not require a high-power circulation pump. Compared with the spray type and sleeve type cooling methods, it has the advantage of cost saving, and is flexible and convenient to use, and easy to repair and maintain; the method of the present invention performs smoke cooling treatment before the smoke liquid-solid capture device, allowing more gaseous VOCs to become liquid and solid, and then the smoke liquid-solid capture device blocks, captures and absorbs solids and liquids, eliminating the liquid-solid clogging problem of the subsequent smoke adsorption device, so that the adsorption material can give full play to the adsorption function, which can effectively reduce the adsorption pressure, extend the service life of the adsorption material, reduce the operating cost, and achieve clean emissions.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection, and particularly relates to a treatment device and a method for treating polymorphic organic composite pollutants. Background Art

[0002] At present, ozone-type smog is becoming more and more serious, and the main cause of ozone-type smog is VOC emissions. The composition of VOC is very complex, resulting in a wide range of vaporization points, liquefaction points, and solidification points. Since the generated droplets and particles are very small, it is very difficult to control them. Composite flue gas in three states often appears, and many pollutants are highly toxic and carcinogenic substances.

[0003] In the prior art, there are a variety of treatment methods, such as plasma method, direct adsorption method and electrostatic fume removal method. The plasma method requires large investment and high operating cost. In the adsorption method, since there are often liquid and solid VOCs in the flue gas, the adsorption material is quickly blocked by the surface, easily loses adsorption capacity, and has a short service life. Electrostatic adsorption fume removal can only remove solid and large droplet VOCs, and the gaseous state cannot be removed at all, and explosions often occur in winter. Therefore, many restaurant fumes are still only in the exhaust state and have not yet achieved the purpose of smoke removal, especially barbecue fumes. Therefore, the current household range hoods only stay at the level of exhausting fumes and do not have the function of removing VOCs at all. In order to solve the above problems, we have developed a composite treatment method. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a device and method for treating polymorphic organic composite pollutants, which uses tap water dripping to cool down, and absorbs the "solid-liquid-gas" of harmful substances in the flue gas in steps through flue gas liquid-solid capture and flue gas adsorption, thereby achieving the effect of VOC removal. The specific technical scheme is as follows:

[0005] A treatment device for polymorphic organic composite pollutants, comprising a smoke collecting hood 1, a cooling pipe 2, a smoke liquid-solid capture device 7, an induced draft fan 13, a smoke adsorption device 14 and a chimney 16;

[0006] The cooling pipe 2 is a U-shaped pipe, and the outer walls of the U-shaped ports of the cooling pipe 2 are respectively provided with annular drip grooves 3, and the outer walls of the cooling pipe 2 are respectively provided with water collecting grooves 4 below the annular drip grooves 3, and the bottom end of the cooling pipe 2 is provided with a liquid collecting groove I 5; the annular drip groove 3 is connected to a tap water pipe 6;

[0007] A motor 8 is provided on the top of the smoke liquid-solid capture device 7, a liquid collecting tank II 12 is provided at the bottom of the smoke liquid-solid capture device 7, a rotating capture device is provided inside the smoke liquid-solid capture device 7, and the rotating capture device is composed of a rotating main shaft 9, a filament 10 and a uniform distribution plate 11, the filament 10 is evenly distributed around the rotating main shaft 9, and the uniform distribution plates 11 are provided at the upper and lower ends of the filament 10; the motor 8 is connected to the rotating main shaft 9 to drive the rotating main shaft 9 to rotate; the smoke adsorption device 14 is filled with adsorption material 15;

[0008] The smoke hood 1 is connected to the smoke inlet of the cooling pipe 2 through a pipe, the smoke outlet of the cooling pipe 2 is connected to the lower air inlet of the smoke liquid-solid capture device 7 through a pipe, the upper air outlet of the smoke liquid-solid capture device 7 is connected to the air inlet of the induced draft fan 13 through a pipe, the air outlet of the induced draft fan 13 is connected to the bottom air inlet of the smoke adsorption device 14 through a pipe, and the top air outlet of the smoke adsorption device 14 is connected to the chimney 16;

[0009] The cooling pipe 2 is replaced with an I-shaped pipe, and the outer wall of the I-shaped upper port of the cooling pipe 2 is provided with an annular drip groove 3, and the outer wall of the cooling pipe 2 is provided with a water collecting groove 4 below the annular drip groove 3, and the bottom end of the cooling pipe 2 is provided with a liquid collecting groove I 5; the annular drip groove 3 is connected to a tap water pipe 6;

[0010] The bottom of the annular drip groove 3 is evenly provided with flow holes;

[0011] The filament 10 is a stainless steel wire;

[0012] The inner wall of the flue gas liquid-solid capture device 7 is attached with one or a combination of a material and a plastic film with a surface tension greater than that of the captured liquid organic matter;

[0013] The outer wall of the flue gas adsorption device 14 is provided with a heat-insulating layer;

[0014] The adsorption material 15 is made of activated carbon.

[0015] A method for treating polymorphic organic composite pollutants, using the above-mentioned polymorphic organic composite pollutant treatment device, the method comprises the following steps:

[0016] Step 1, cooling down:

[0017] Start the induced draft fan 13, and at the same time open the water pipe 6 to connect the tap water; the smoke is sucked into the smoke hood 1, and enters the cooling pipe 2 through the connecting pipe; at this time, the tap water flows along the outer wall of the cooling pipe 2 to the water collecting tank 4 through the flow hole at the bottom of the annular drip tank 3, and the tap water covers the outer wall of the cooling pipe 2 when flowing, and at the same time, the water evaporates to cool the cooling pipe 2, thereby cooling the smoke to 20-40°C, and the remaining water falls into the water collecting tank 4 along the outer wall of the cooling pipe 2 for recovery;

[0018] Step 2, liquid-solid capture:

[0019] The cooled flue gas enters the flue gas liquid-solid capture device 7 through the connecting pipe, the motor 8 is started, and the rotating capture device is driven to rotate, and the filament 10 repeatedly cuts the flue gas to block and capture the organic mist droplets and solid organic matter formed after the flue gas is cooled; the filament 10 has viscosity after adhering to the organic mist droplets, and then continues to adhere to and capture the organic mist droplets and solid organic matter. As the adhesion amount continues to increase, under the action of centrifugal force, the organic mist droplets and solid organic matter are thrown to the inner wall of the flue gas liquid-solid capture device 7 by the rotating capture device, and flow downward into the collecting tank II 12 for recovery;

[0020] Step 3, gas adsorption:

[0021] The escaping gas enters the flue gas adsorption device 14 through the connecting pipe, and the harmful gas is absorbed by the adsorption material 15; the escaping harmless gas is discharged through the chimney 16;

[0022] Step 4, maintenance and cleaning:

[0023] The equipment is run for 30 to 60 days, and the cooling pipe 2 is cleaned once; in step 1, the tap water dripping cooling makes part of the liquefied VOC adhere to the inner wall of the cooling pipe 2 to form adhesions; when cleaning the adhesions, the outer wall of the cooling pipe 2 is heated to reduce the viscosity of the adhesions after heating, and the adhesions flow downward into the collecting tank Ⅰ5 for recovery; the outer wall heating method is to heat the pipe with an external heating blanket, and the heating makes the pipe temperature rise by 20 to 40°C until the adhesions flow down; the equipment is run for 30 to 90 days, and when it is found that the adsorption capacity of the adsorption material is insufficient and the exhaust flue gas detection does not meet the standards, the adsorption material 15 is replaced once.

[0024] A device for treating polymorphic organic composite pollutants, which is used for treating kitchen VOC fume exhaust, moxibustion smoke and industrial polymorphic VOC fume.

[0025] Compared with the prior art, the device and method for treating polymorphic organic composite pollutants of the present invention have the following beneficial effects:

[0026] 1. The present invention uses tap water to drip on the outer wall to cool down. The amount of flowing water is adjusted by adjusting the liquid level of the annular drip groove. The water evaporates to reduce the temperature of the pipe wall. This method does not require a high-power circulation pump. Compared with the spray type and sleeve type cooling methods, it has the advantage of cost saving, and is flexible and convenient to use, and easy to repair and maintain;

[0027] Second, the flue gas is cooled before the flue gas liquid-solid capture device to convert more gaseous VOCs into liquid and solid states. The flue gas liquid-solid capture device then intercepts, captures and absorbs the solids and liquids, eliminating the liquid-solid blockage problem of the subsequent flue gas adsorption device. This allows the adsorption material to fully exert its adsorption function, effectively reducing the adsorption pressure, extending the service life of the adsorption material and reducing operating costs.

[0028] 3. The adsorption material should be replaced regularly. The replaced adsorption material can be regenerated or used as fuel to provide energy. The captured liquid and solid VOC substances can be recycled as chemical raw materials to achieve full utilization of resources.

[0029] Fourth, VOC components are complex and are easy to form solid or liquid states at low temperatures in winter. The present invention sets an insulation layer on the outer wall of the flue gas adsorption device to keep the adsorption temperature stable and prevent VOC from forming solid or liquid states to block the adsorption material, thereby extending the service life of the adsorption material.

[0030] 5. The filamentary material used in the present invention has a smaller surface tension than the organic droplets, which is beneficial to the wetting and adsorption of the organic droplets and the filamentary material, thereby improving the capture and adsorption capacity.

[0031] In summary, the device and method of the present invention: (1) Compared with the range hood: the range hood only sucks the oil smoke into the atmosphere and has no function of removing pollutants, while the present solution captures and removes the liquid, solid and gas three-phase pollutants in the flue gas, which is a real VOC control. (2) Compared with the plasma method for removing oil smoke: less investment, low operating cost, stable and safe operation, and no safety hazards such as explosion and fire. (3) Compared with electrostatic oil smoke removal: not only can liquid and solid VOC be removed, but also gaseous VOC can be removed, and the liquid-solid capture device of the present invention can remove ultra-fine submicron oil mist, which can greatly improve the life of the rear adsorbent and will not cause explosion for flue gas with high water content. (4) Compared with the direct adsorption method for removing oil smoke: the life of the adsorbent is greatly extended and can stably meet the standard, which is impossible for the direct adsorption method. (5) Compared with the water spray method for removing oil smoke: the water spray method cannot meet the standard at all, water and oil mist do not wet, and it is impossible to capture small oil mist droplets, let alone gaseous VOC. (6) Compared with direct adsorption method for oil fume removal: stable operation, low cost, and long life of adsorption materials. The device and method of the present invention are also applicable to the treatment of other liquid-solid-gas polymorphic VOCs, such as moxibustion smoke and industrial polymorphic VOC flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of a device for treating polymorphic organic composite pollutants according to embodiments 1 and 3 of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of a device for treating polymorphic organic composite pollutants according to Example 2 of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of a rotating catcher in a flue gas liquid-solid capture device;

[0035] In the figure: 1-smoke hood, 2-cooling pipe, 3-annular drip trough, 4-water collecting trough, 5-liquid collecting trough I, 6-tap pipe, 7-smoke liquid-solid capture device, 8-motor, 9-rotating main shaft, 10-filament, 11-uniform distribution plate, 12-liquid collecting trough II, 13-induced draft fan, 14-smoke adsorption device, 15-adsorption material, 16-chimney. DETAILED DESCRIPTION

[0036] The following is a combination of specific implementation cases and attached Figure 1-3 The present invention is further described below, but the present invention is not limited to these embodiments.

[0037] Example 1

[0038] In a university cafeteria, the original fume treatment used an electrostatic fume removal system. In winter, when the water content in the fume was high, explosions often occurred, affecting normal use, and the VOC emissions of the fume often exceeded the standard. In order to ensure stable use and solve the problem of excessive VOC emissions, the equipment of the present invention was used for transformation; the original fume hood and front pipe were retained, the electrostatic fume removal system was removed, a vertical U-shaped cooling pipe was added outdoors, tap water was used as the cooling water source, the control valve was set on the ground, and the water valve was opened to control the water flow rate when the equipment was started. The cooling water collected in the water collection tank was used for cleaning water.

[0039] like Figure 1 and 3 As shown, a treatment device for polymorphic organic composite pollutants includes a smoke collecting hood 1, a cooling pipe 2, a smoke liquid-solid capture device 7, an induced draft fan 13, a smoke adsorption device 14 and a chimney 16;

[0040] The cooling pipe 2 is a U-shaped pipe, and the outer walls of the U-shaped ports of the cooling pipe 2 are respectively provided with annular drip grooves 3, and the outer walls of the cooling pipe 2 are respectively provided with water collecting grooves 4 below the annular drip grooves 3, and the bottom end of the cooling pipe 2 is provided with a liquid collecting groove I 5; the annular drip groove 3 is connected to a tap water pipe 6;

[0041] A motor 8 is provided on the top of the smoke liquid-solid capture device 7, a liquid collecting tank II 12 is provided at the bottom of the smoke liquid-solid capture device 7, a rotating capture device is provided inside the smoke liquid-solid capture device 7, and the rotating capture device is composed of a rotating main shaft 9, a filament 10 and a uniform distribution plate 11, the filament 10 is evenly distributed around the rotating main shaft 9, and the uniform distribution plates 11 are provided at the upper and lower ends of the filament 10; the motor 8 is connected to the rotating main shaft 9 to drive the rotating main shaft 9 to rotate; the smoke adsorption device 14 is filled with adsorption material 15;

[0042] The smoke hood 1 is connected to the smoke inlet of the cooling pipe 2 through a pipe, the smoke outlet of the cooling pipe 2 is connected to the lower air inlet of the smoke liquid-solid capture device 7 through a pipe, the upper air outlet of the smoke liquid-solid capture device 7 is connected to the air inlet of the induced draft fan 13 through a pipe, the air outlet of the induced draft fan 13 is connected to the bottom air inlet of the smoke adsorption device 14 through a pipe, and the top air outlet of the smoke adsorption device 14 is connected to the chimney 16;

[0043] The bottom of the annular drip groove 3 is evenly provided with flow holes;

[0044] The filament 10 is a stainless steel wire;

[0045] A plastic film is attached to the inner wall of the smoke liquid-solid capture device 7;

[0046] The outer wall of the flue gas adsorption device 14 is provided with a heat-insulating layer;

[0047] The adsorption material 15 is made of activated carbon.

[0048] A method for treating polymorphic organic composite pollutants, using the above-mentioned polymorphic organic composite pollutant treatment device, the method comprises the following steps:

[0049] Step 1, cooling down:

[0050] Start the induced draft fan 13, and at the same time open the water pipe 6 to connect the tap water; the smoke is sucked into the smoke hood 1, and enters the cooling pipe 2 through the connecting pipe; at this time, the tap water flows along the outer wall of the cooling pipe 2 to the water collecting tank 4 through the flow hole at the bottom of the annular drip tank 3, and the tap water covers the outer wall of the cooling pipe 2 when flowing, and at the same time, the water evaporates to cool the cooling pipe 2, thereby cooling the smoke to 20-40°C, and the remaining water falls into the water collecting tank 4 along the outer wall of the cooling pipe 2 for recovery;

[0051] Step 2, liquid-solid capture:

[0052] The cooled flue gas enters the flue gas liquid-solid capture device 7 through the connecting pipe, the motor 8 is started, and the rotating capture device is driven to rotate, and the filament 10 repeatedly cuts the flue gas to block and capture the organic mist droplets and solid organic matter formed after the flue gas is cooled; the filament 10 has viscosity after adhering to the organic mist droplets, and then continues to adhere to and capture the organic mist droplets and solid organic matter. As the adhesion amount continues to increase, under the action of centrifugal force, the organic mist droplets and solid organic matter are thrown to the inner wall of the flue gas liquid-solid capture device 7 by the rotating capture device, and flow downward into the collecting tank II 12 for recovery;

[0053] Step 3, gas adsorption:

[0054] The escaping gas enters the flue gas adsorption device 14 through the connecting pipe, and the harmful gas is absorbed by the adsorption material 15; the escaping harmless gas is discharged through the chimney 16;

[0055] Step 4, maintenance and cleaning:

[0056] The equipment is run for 40 days and the cooling pipe 2 is cleaned once; in step 1, the tap water dripping cooling makes part of the liquefied VOC adhere to the inner wall of the cooling pipe 2 to form adhesions; when cleaning the adhesions, the outer wall of the cooling pipe 2 is heated to reduce the viscosity of the adhesions after heating, and the adhesions flow downward into the collecting tank Ⅰ5 for recovery; the outer wall heating method is to heat the pipe with an external heating blanket, and the heating makes the pipe temperature rise by 20 to 40°C until the adhesions flow down; the equipment is run for 30 to 40 days, and when it is found that the adsorption capacity of the adsorption material is insufficient and the exhaust gas detection does not meet the standards, the adsorption material 15 is replaced once.

[0057] In this embodiment, the flue gas treated by the flue gas liquid-solid capture device has no oil smoke, and the exhaust gas temperature in summer is 30-35°C; there is basically no surface clogging of the activated carbon, and the activated carbon is replaced every 30-40 days, and the flue gas VOC emission does not exceed 2mg / m 3 There is no smoke when viewed visually, and there is no odor around, meeting the emission standards.

[0058] Example 2

[0059] A barbecue restaurant originally used an electrostatic fume removal system plus plasma to remove VOC for flue gas treatment, which required large investment, high operating costs, and insufficient processing capacity. When 50% of the barbecue seats were used, the surrounding residents could still accept it. When the seats exceeded 70%, the residents reacted strongly, and passers-by complained bitterly about the stench and the smoke. In order to solve the problem of emission nuisance, the equipment of the present invention was used for flue gas treatment transformation; the original smoke hood and front pipe were retained, the electrostatic fume removal system was removed, a vertical I-shaped cooling pipe was added outdoors, tap water was used as the cooling water source, the control valve was set on the ground, and the water valve was opened to control the water flow rate when the equipment was started. The cooling water collected in the sump was used for cleaning water.

[0060] like Figure 2 and 3 As shown, a treatment device for polymorphic organic composite pollutants includes a smoke collecting hood 1, a cooling pipe 2, a smoke liquid-solid capture device 7, an induced draft fan 13, a smoke adsorption device 14 and a chimney 16;

[0061] The cooling pipe 2 is an I-shaped pipe, and the outer wall of the I-shaped upper port of the cooling pipe 2 is provided with an annular drip groove 3, and the outer wall of the cooling pipe 2 is provided with a water collecting groove 4 below the annular drip groove 3, and the bottom end of the cooling pipe 2 is provided with a liquid collecting groove I 5; the annular drip groove 3 is connected to a tap water pipe 6;

[0062] A motor 8 is provided on the top of the smoke liquid-solid capture device 7, a liquid collecting tank II 12 is provided at the bottom of the smoke liquid-solid capture device 7, a rotating capture device is provided inside the smoke liquid-solid capture device 7, and the rotating capture device is composed of a rotating main shaft 9, a filament 10 and a uniform distribution plate 11, the filament 10 is evenly distributed around the rotating main shaft 9, and the uniform distribution plates 11 are provided at the upper and lower ends of the filament 10; the motor 8 is connected to the rotating main shaft 9 to drive the rotating main shaft 9 to rotate; the smoke adsorption device 14 is filled with adsorption material 15;

[0063] The smoke hood 1 is connected to the smoke inlet of the cooling pipe 2 through a pipe, the smoke outlet of the cooling pipe 2 is connected to the lower air inlet of the smoke liquid-solid capture device 7 through a pipe, the upper air outlet of the smoke liquid-solid capture device 7 is connected to the air inlet of the induced draft fan 13 through a pipe, the air outlet of the induced draft fan 13 is connected to the bottom air inlet of the smoke adsorption device 14 through a pipe, and the top air outlet of the smoke adsorption device 14 is connected to the chimney 16;

[0064] The bottom of the annular drip groove 3 is evenly provided with flow holes;

[0065] The filament 10 is a stainless steel wire;

[0066] The inner wall of the flue gas liquid-solid capture device 7 is attached with a material having a larger surface tension than the captured liquid organic matter;

[0067] The outer wall of the flue gas adsorption device 14 is provided with a heat-insulating layer;

[0068] The adsorption material 15 is made of activated carbon.

[0069] A method for treating polymorphic organic composite pollutants, using the above-mentioned polymorphic organic composite pollutant treatment device, the method comprises the following steps:

[0070] Step 1, cooling down:

[0071] Start the induced draft fan 13, and at the same time open the water pipe 6 to connect the tap water; the smoke is sucked into the smoke hood 1, and enters the cooling pipe 2 through the connecting pipe; at this time, the tap water flows along the outer wall of the cooling pipe 2 to the water collecting tank 4 through the flow hole at the bottom of the annular drip tank 3, and the tap water covers the outer wall of the cooling pipe 2 when flowing, and at the same time, the water evaporates to cool the cooling pipe 2, thereby cooling the smoke to 30-40°C, and the remaining water falls into the water collecting tank 4 along the outer wall of the cooling pipe 2 for recovery;

[0072] Step 2, liquid-solid capture:

[0073] The cooled flue gas enters the flue gas liquid-solid capture device 7 through the connecting pipe, the motor 8 is started, and the rotating capture device is driven to rotate, and the filament 10 repeatedly cuts the flue gas to block and capture the organic mist droplets and solid organic matter formed after the flue gas is cooled; the filament 10 has viscosity after adhering to the organic mist droplets, and then continues to adhere to and capture the organic mist droplets and solid organic matter. As the adhesion amount continues to increase, under the action of centrifugal force, the organic mist droplets and solid organic matter are thrown to the inner wall of the flue gas liquid-solid capture device 7 by the rotating capture device, and flow downward into the collecting tank II 12 for recovery;

[0074] Step 3, gas adsorption:

[0075] The escaping gas enters the flue gas adsorption device 14 through the connecting pipe, and the harmful gas is absorbed by the adsorption material 15; the escaping harmless gas is discharged through the chimney 16;

[0076] Step 4, maintenance and cleaning:

[0077] The equipment is run for 50 days and the cooling pipe 2 is cleaned once; in step 1, the tap water dripping cooling makes part of the liquefied VOC adhere to the inner wall of the cooling pipe 2 to form adhesions; when cleaning the adhesions, the outer wall of the cooling pipe 2 is heated to reduce the viscosity of the adhesions after heating, and the adhesions flow downward into the collecting tank Ⅰ5 for recovery; the outer wall heating method is to heat the pipe with an external heating blanket, and the heating makes the pipe temperature rise by 20 to 40°C until the adhesions flow down; the equipment is run for 30 to 40 days, and when it is found that the adsorption capacity of the adsorption material is insufficient and the exhaust flue gas detection does not meet the standards, the adsorption material 15 is replaced once.

[0078] In this embodiment, the rotating speed of the rotary capture device is controlled at 300-500r / min. The smoke treated by the smoke liquid-solid capture device is no longer visible. The exhaust smoke temperature in summer is 30-35°C. The activated carbon has basically no surface clogging phenomenon. The activated carbon is replaced every 30-40 days. The VOC emission of the flue gas does not exceed 2mg / m 3 There is no smoke when viewed visually, and the surrounding area is odorless, meeting the emission standards, and completely solving the problem of smoke nuisance.

[0079] Example 3

[0080] A certain moxibustion therapy shop originally used an electrostatic fume removal system for flue gas treatment, which required large investment and high operating costs, and could not solve the moxibustion odor. The smell was suffocating, and residents had strong complaints. Residents often petitioned, resulting in the shop being unable to operate. There are a variety of liquid, solid and gaseous VOCs in moxibustion smoke, and the ones with the strongest odors are eucalyptol and camphor. At the flue gas treatment temperature, camphor is liquid, camphor is solid, and other large amounts of VOCs are gaseous, and also have a certain odor. In order to solve the problem of emission nuisance, the equipment of the present invention is used for flue gas treatment transformation; the original smoke hood and front pipe are retained, the electrostatic fume removal system is removed, a vertical U-shaped cooling pipe is added outdoors, tap water is used as a cooling water source, and the control valve is set on the ground. When the equipment is started, the water valve is opened to control the water flow rate, and the cooling water collected in the sump is used for cleaning water.

[0081] like Figure 1 and 3 As shown, a treatment device for polymorphic organic composite pollutants includes a smoke collecting hood 1, a cooling pipe 2, a smoke liquid-solid capture device 7, an induced draft fan 13, a smoke adsorption device 14 and a chimney 16;

[0082] The cooling pipe 2 is a U-shaped pipe, and the outer walls of the U-shaped ports of the cooling pipe 2 are respectively provided with annular drip grooves 3, and the outer walls of the cooling pipe 2 are respectively provided with water collecting grooves 4 below the annular drip grooves 3, and the bottom end of the cooling pipe 2 is provided with a liquid collecting groove I 5; the annular drip groove 3 is connected to a tap water pipe 6;

[0083] A motor 8 is provided on the top of the smoke liquid-solid capture device 7, a liquid collecting tank II 12 is provided at the bottom of the smoke liquid-solid capture device 7, a rotating capture device is provided inside the smoke liquid-solid capture device 7, and the rotating capture device is composed of a rotating main shaft 9, a filament 10 and a uniform distribution plate 11, the filament 10 is evenly distributed around the rotating main shaft 9, and the uniform distribution plates 11 are provided at the upper and lower ends of the filament 10; the motor 8 is connected to the rotating main shaft 9 to drive the rotating main shaft 9 to rotate; the smoke adsorption device 14 is filled with adsorption material 15;

[0084] The smoke hood 1 is connected to the smoke inlet of the cooling pipe 2 through a pipe, the smoke outlet of the cooling pipe 2 is connected to the lower air inlet of the smoke liquid-solid capture device 7 through a pipe, the upper air outlet of the smoke liquid-solid capture device 7 is connected to the air inlet of the induced draft fan 13 through a pipe, the air outlet of the induced draft fan 13 is connected to the bottom air inlet of the smoke adsorption device 14 through a pipe, and the top air outlet of the smoke adsorption device 14 is connected to the chimney 16;

[0085] The bottom of the annular drip groove 3 is evenly provided with flow holes;

[0086] The filament 10 is a stainless steel wire;

[0087] The inner wall of the flue gas liquid-solid capture device 7 is attached with a material and a plastic film with a surface tension greater than that of the captured liquid organic matter;

[0088] The outer wall of the flue gas adsorption device 14 is provided with a heat-insulating layer;

[0089] The adsorption material 15 is made of activated carbon.

[0090] A method for treating polymorphic organic composite pollutants, using the above-mentioned polymorphic organic composite pollutant treatment device, the method comprises the following steps:

[0091] Step 1, cooling down:

[0092] Start the induced draft fan 13, and at the same time open the water pipe 6 to connect the tap water; the smoke is sucked into the smoke hood 1, and enters the cooling pipe 2 through the connecting pipe; at this time, the tap water flows along the outer wall of the cooling pipe 2 to the water collecting tank 4 through the flow hole at the bottom of the annular drip tank 3, and the tap water covers the outer wall of the cooling pipe 2 when flowing, and at the same time, the water evaporates to cool the cooling pipe 2, thereby cooling the smoke to 20-40°C, and the remaining water falls into the water collecting tank 4 along the outer wall of the cooling pipe 2 for recovery;

[0093] Step 2, liquid-solid capture:

[0094] The cooled flue gas enters the flue gas liquid-solid capture device 7 through the connecting pipe, the motor 8 is started, and the rotating capture device is driven to rotate, and the filament 10 repeatedly cuts the flue gas to block and capture the organic mist droplets and solid organic matter formed after the flue gas is cooled; the filament 10 has viscosity after adhering to the organic mist droplets, and then continues to adhere to and capture the organic mist droplets and solid organic matter. As the adhesion amount continues to increase, under the action of centrifugal force, the organic mist droplets and solid organic matter are thrown to the inner wall of the flue gas liquid-solid capture device 7 by the rotating capture device, and flow downward into the collecting tank II 12 for recovery;

[0095] Step 3, gas adsorption:

[0096] The escaping gas enters the flue gas adsorption device 14 through the connecting pipe, and the harmful gas is absorbed by the adsorption material 15; the escaping harmless gas is discharged through the chimney 16;

[0097] Step 4, maintenance and cleaning:

[0098] The equipment is run for 50 to 60 days and the cooling pipe 2 is cleaned once; in step 1, the tap water dripping cooling makes part of the liquefied VOC adhere to the inner wall of the cooling pipe 2 to form adhesions; when cleaning the adhesions, the outer wall of the cooling pipe 2 is heated to reduce the viscosity of the adhesions after heating, and the adhesions flow downward into the collecting tank Ⅰ5 for recovery; the outer wall heating method is to heat the pipe with an external heating blanket, and the heating makes the pipe temperature rise by 20 to 40°C until the adhesions flow down; the equipment is run for 70 to 90 days, and when it is found that the adsorption capacity of the adsorption material is insufficient and the exhaust flue gas detection does not meet the standards, the adsorption material 15 is replaced once.

[0099] In this embodiment, the rotating capture device has a rotation speed of 300-500 r / min, and the flue gas is captured multiple times. The steel wire is sticky after being bonded with oil mist such as eucalyptus alcohol, and solid camphor and other particles are adhered and captured; the flue gas treated by the flue gas liquid-solid capture device has no oil smoke, and the exhaust flue gas temperature is 30-35°C in summer; the activated carbon has basically no surface clogging phenomenon, and the activated carbon is replaced every 70-90 days, and the flue gas VOC emission does not exceed 2 mg / m 3 There is no smoke when visible, and there is no smell around, which meets the emission standards and completely solves the problem of moxa smoke disturbing residents.

Claims

1. A treatment device for polymorphic organic composite pollutants, characterized in that: It comprises a smoke collecting hood (1), a cooling duct (2), a smoke liquid-solid capture device (7), an induced draft fan (13), a smoke adsorption device (14) and a chimney (16); The cooling pipe (2) is a U-shaped pipe, and the outer walls of the U-shaped ends of the cooling pipe (2) are respectively provided with annular drip grooves (3), and the outer walls of the cooling pipe (2) are respectively provided with water collecting grooves (4) below the annular drip grooves (3), and the bottom end of the cooling pipe (2) is provided with a liquid collecting groove I (5); the annular drip groove (3) is connected to a tap water pipe (6); A motor (8) is arranged at the top of the smoke liquid-solid capture device (7), a liquid collecting tank II (12) is arranged at the bottom of the smoke liquid-solid capture device (7), a rotating capture device is arranged inside the smoke liquid-solid capture device (7), and the rotating capture device is composed of a rotating main shaft (9), a filament (10) and a uniform distribution plate (11), the filament (10) is evenly distributed around the rotating main shaft (9), and the uniform distribution plates (11) are arranged at the upper and lower ends of the filament (10); the motor (8) is connected to the rotating main shaft (9) to drive the rotating main shaft (9) to rotate; the smoke adsorption device (14) is filled with adsorption material (15); The smoke collecting hood (1) is connected to the smoke inlet of the cooling duct (2) through a pipeline, the smoke outlet of the cooling duct (2) is connected to the lower air inlet of the smoke liquid-solid capture device (7) through a pipeline, the upper air outlet of the smoke liquid-solid capture device (7) is connected to the air inlet of the induced draft fan (13) through a pipeline, the air outlet of the induced draft fan (13) is connected to the bottom air inlet of the smoke adsorption device (14) through a pipeline, and the top air outlet of the smoke adsorption device (14) is connected to the chimney (16); The bottom of the annular drip groove (3) is evenly provided with flow holes; A plastic film having a surface tension greater than that of the captured liquid organic matter is attached to the inner wall of the flue gas liquid-solid capture device (7).

2. The treatment equipment for polymorphic organic composite pollutants according to claim 1 is characterized in that: The cooling pipe (2) is an I-shaped pipe, the outer wall of the I-shaped upper end of the cooling pipe (2) is provided with an annular drip groove (3), the outer wall of the cooling pipe (2) is provided with a water collecting groove (4) below the annular drip groove (3), and the bottom end of the cooling pipe (2) is provided with a liquid collecting groove I (5); the annular drip groove (3) is connected to a tap water pipe (6).

3. The treatment equipment for polymorphic organic composite pollutants according to claim 1 is characterized in that: The filament (10) is a stainless steel wire.

4. The treatment equipment for polymorphic organic composite pollutants according to claim 1 is characterized in that: The outer wall of the flue gas adsorption device (14) is provided with a heat-insulating layer.

5. The treatment equipment for polymorphic organic composite pollutants according to claim 1 is characterized in that: The adsorption material (15) is made of activated carbon.

6. A method for treating polymorphic organic composite pollutants, using a polymorphic organic composite pollutant treatment device according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: Step 1, cooling down: The induced draft fan (13) is started, and at the same time, the water pipe (6) is opened to connect the tap water; the smoke is sucked into the smoke collecting hood (1) and enters the cooling pipe (2) through the connecting pipe; at this time, the tap water flows along the outer wall of the cooling pipe (2) to the water collecting tank (4) through the flow holes at the bottom of the annular drip tank (3); the tap water covers the outer wall of the cooling pipe (2) while flowing, and at the same time, the water evaporates to cool the cooling pipe (2), thereby cooling the smoke to 20-40°C, and the remaining water falls along the outer wall of the cooling pipe (2) into the water collecting tank (4) for recovery; Step 2, liquid-solid capture: The flue gas after cooling enters the flue gas liquid-solid capture device (7) through the connecting pipe, and the motor (8) is started to drive the rotating capture device to rotate, and the filament (10) repeatedly cuts the flue gas to intercept and capture organic droplets and solid organic matter formed after the flue gas is cooled; the filament (10) has viscosity after adhering to the organic droplets, and then continues to adhere to and capture the organic droplets and solid organic matter. As the adhesion amount continues to increase, under the action of centrifugal force, the organic droplets and solid organic matter are thrown by the rotating capture device to the inner wall of the flue gas liquid-solid capture device (7), and flow downward into the liquid collecting tank II (12) for recovery; Step 3, gas adsorption: The escaping gas enters the flue gas adsorption device (14) through the connecting pipe, and the harmful gas is absorbed by the adsorption material (15); the escaping harmless gas is discharged through the chimney (16); Step 4, maintenance and cleaning: The cooling pipe (2) is cleaned once every 30 to 60 days of operation. In step 1, the cooling is performed by dripping tap water so that part of the liquefied VOC adheres to the inner wall of the cooling pipe (2) to form an adhered substance. When cleaning the adhered substance, the outer wall of the cooling pipe (2) is heated so that the viscosity of the adhered substance decreases after the temperature rises, and the adhered substance flows downward into the liquid collecting tank I (5) for recovery. When the equipment is operated for 30 to 90 days and it is found that the adsorption capacity of the adsorbent material is insufficient and the exhaust gas detection does not meet the standard, the adsorbent material (15) is replaced once.

7. The method for treating polymorphic organic composite pollutants according to claim 6, characterized in that: In step 4, the outer wall is heated by an external heating blanket, and the heating causes the temperature of the pipeline to rise by 20-40°C.

8. The treatment device for polymorphic organic composite pollutants described in any one of claims 1 to 5 is applied to the treatment of kitchen VOC fume exhaust, moxibustion smoke or industrial polymorphic VOC fume.

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