Organic waste gas treatment system

Abstract

The utility model discloses an organic waste gas treatment system which comprises a settling tower connected with an organic waste gas inlet pipe; a gas inlet pipe of the demisting filter box is connected with a gas outlet pipe of the settling tower; a gas inlet pipe of the micro-nano adsorption catalytic degradation equipment is connected with a gas outlet pipe of the demisting filter box; and the exhaust funnel is connected with an air outlet pipe of the micro-nano adsorption catalytic degradation equipment. The organic waste gas treatment system provided by the utility model is high in VOCs (Volatile Organic Chemicals) removal rate.

Description

Technical Field

[0001] The utility model relates to the technical field of organic waste gas treatment systems, in particular to an organic waste gas treatment system. Background Art

[0002] Volatile Organic Compounds (VOCs), also known as organic waste gas, are a relatively active type of VOC in terms of environmental protection. They are an important source of pollutants that cause urban haze and photochemical smog. When the concentration of VOCs is too high, it can cause acute poisoning in people. In mild cases, people may experience headaches, dizziness, coughing, vomiting, etc. In severe cases, people may fall into a coma or even be in danger of death, which seriously threatens human health and environmental safety. VOCs organic waste gas has complex components, and conventional VOCs waste gas treatment technology has great limitations in practical applications, and the treatment effect on lower concentration VOCs waste gas is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an organic waste gas treatment system with a high VOCs removal rate.

[0004] In order to solve the above technical problems, the utility model provides an organic waste gas treatment system, comprising:

[0005] A settling tower, wherein the settling tower is connected to an organic waste gas inlet pipe;

[0006] A demisting filter box, the air inlet pipe of the demisting filter box is connected to the air outlet pipe of the settling tower;

[0007] A micro-nano adsorption catalytic degradation device, wherein the air inlet pipe of the micro-nano adsorption catalytic degradation device is connected to the air outlet pipe of the demisting filter box;

[0008] An exhaust pipe is connected to an exhaust pipe of the micro-nano adsorption catalytic degradation device.

[0009] In one embodiment, the settling tower includes a first cyclone plate layer, a second cyclone plate layer, a third cyclone plate layer, a baffle plate layer and a wire mesh demisting layer which are arranged in sequence from bottom to top.

[0010] In one embodiment, the settling tower is connected to a circulating water tank, and the circulating water tank is provided with a first water supply pipe, a second water supply pipe, a third water supply pipe, a fourth water supply pipe and a recovery water pipe.

[0011] In one embodiment, the first water supply pipe is connected to the first swirl plate layer;

[0012] The second water supply pipe is connected to the second cyclone plate layer;

[0013] The third water supply pipe is connected to the third swirl plate layer;

[0014] The fourth water supply pipe is connected to the baffle layer;

[0015] A water outlet is provided at the bottom of the settling tower, and the recovery water pipe is connected to the water outlet.

[0016] In one embodiment, the organic waste gas inlet pipe is arranged below the first cyclone plate layer of the settling tower.

[0017] In one embodiment, a swirl plate is provided in the first swirl plate layer, the second swirl plate layer or the third swirl plate layer, and the swirl plate includes a central blind plate and blades connected to the central blind plate.

[0018] In one embodiment, a pneumatic device is provided in the baffle layer, and the pneumatic device is used to change the airflow direction of the organic waste gas in the baffle layer.

[0019] In one embodiment, the wire mesh demisting layer includes a filter mesh formed by interweaving silk threads, and the filter mesh is used to remove droplets entrained in the organic waste gas.

[0020] In one embodiment, the demisting filter box includes a primary-efficiency filtration demisting filter box and / or a medium-efficiency filtration demisting filter box.

[0021] In one embodiment, a centrifugal fan is provided between the exhaust pipe and the micro-nano adsorption catalytic degradation device.

[0022] The implementation of this utility model has the following beneficial effects:

[0023] The organic waste gas treatment system provided by the utility model successively sends the organic waste gas into a sedimentation tower for spraying, then sends it into a demisting filter box for filtration, and finally sends it into a micro-nano adsorption catalytic degradation device for treatment, and the gas that meets the treatment standards is discharged into the atmosphere. After passing through the first cyclone plate layer, the second cyclone plate layer, the third cyclone plate layer, the baffle plate layer and the wire mesh demisting layer from bottom to top in the sedimentation tower, the organic waste gas then enters the demisting filter box. Under the interception, inertia, diffusion and electrostatic action of the multi-stage filter layer, the remaining small particle impurities and adhesions are almost completely removed. After the above-mentioned pretreatment process, it enters the micro-nano adsorption catalytic degradation device, and the organic pollutants in the waste gas are removed by adsorption catalytic degradation, and the clean air after treatment is discharged.

[0024] The organic waste gas treatment system provided by the utility model can achieve deep treatment of volatile organic compounds and achieve harmless emission, achieving a VOCs removal rate of more than 90%, and the VOCs emission concentration can be reduced to 15.4mg / m 3The deep purification effect is far lower than the current emission standard of 50mg / m 3 , achieve ultra-low concentration emissions, greatly improve the VOCs treatment technology level in the aluminum profile industry, and meet the requirements of green development in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a flow chart of the organic waste gas treatment system provided by the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is further described in detail below.

[0027] Unless otherwise specified or incompatible herewith, the terms and phrases used herein shall have the following meanings:

[0028] In the present utility model, “preferred” is only used to describe an implementation method or example with better effects, and it should be understood that it does not constitute a limitation on the protection scope of the present utility model.

[0029] In the present utility model, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0030] In order to solve the above problems, the utility model provides an organic waste gas treatment system, such as Figure 1 As shown, including:

[0031] A settling tower 2, wherein the settling tower 2 is connected to the organic waste gas inlet pipe 1;

[0032] A demisting filter box 3, wherein the air inlet pipe of the demisting filter box 3 is connected to the air outlet pipe of the settling tower 2;

[0033] A micro-nano adsorption catalytic degradation device 4, wherein the air inlet pipe of the micro-nano adsorption catalytic degradation device 4 is connected to the air outlet pipe of the demisting filter box 3;

[0034] An exhaust pipe 5 is connected to an exhaust pipe of the micro-nano adsorption catalytic degradation device 4 .

[0035] The organic waste gas treatment system provided by the utility model successively sends the organic waste gas into a settling tower 2 for spraying, then sends it into a demisting filter box 3 for filtration, and finally sends it into a micro-nano adsorption catalytic degradation device 4 for treatment, and the gas that meets the treatment standards is discharged into the atmosphere.

[0036] Specifically, the specific structure of the settling tower 2 is as follows:

[0037] In one embodiment, the settling tower 2 includes a first cyclone plate layer 21, a second cyclone plate layer 22, a third cyclone plate layer 23, a baffle plate layer 24 and a wire mesh demisting layer 25 which are arranged in sequence from bottom to top.

[0038] In one embodiment, the settling tower 2 is connected to a circulating water tank 6, and the circulating water tank 6 is provided with a first water supply pipe 61, a second water supply pipe 62, a third water supply pipe 63, a fourth water supply pipe 64 and a recovery water pipe. Preferably, the first water supply pipe 61 is connected to the first cyclone plate layer 21; the second water supply pipe 62 is connected to the second cyclone plate layer 22; the third water supply pipe 63 is connected to the third cyclone plate layer 23; the fourth water supply pipe 64 is connected to the baffle layer 24; a water outlet is provided at the bottom of the settling tower 2, and the recovery water pipe is connected to the water outlet. In one embodiment, the organic waste gas inlet pipe 1 is provided below the first cyclone plate layer 21 of the settling tower 2. In one embodiment, a cyclone plate is provided in the first cyclone plate layer 21, the second cyclone plate layer 22 or the third cyclone plate layer 23, and the cyclone plate includes a central blind plate and blades connected to the central blind plate.

[0039] Under the above structure, the water absorption liquid and the organic waste gas move relative to each other. When the organic waste gas passes through the blades, it generates rotation and centrifugal motion. The liquid flow is evenly distributed to each blade through the middle blind plate to form a thin liquid layer curtain. The organic waste gas contacts the liquid curtain on the one hand and collides with the liquid flow on the other hand to form droplets, increasing the gas-liquid contact area. The liquid curtain and droplets are thrown to the tower wall by centrifugal force. The droplets are collected into the liquid ring groove by gravity. A guide pipe is provided at the bottom of the ring groove to discharge the liquid into the waste liquid sedimentation area. In the above-mentioned full contact process, the organic waste gas and the absorption liquid flow form a large interphase interface and complete a series of physical and chemical reaction processes.

[0040] In one embodiment, a pneumatic device is provided in the baffle layer 24, and the pneumatic device is used to change the direction of the airflow of the organic waste gas in the baffle layer 24. The organic waste gas is accelerated and swirled by the baffle pneumatic device in the baffle dust removal layer, and the organic waste gas collides, adheres, condenses, and centrifuges with the atomized absorption liquid, and is turned back to the tower wall, and flows to the bottom of the tower along with the water film on the tower wall. By setting the baffle pneumatic device, the organic waste gas is turned back multiple times in the cylinder, and the organic waste gas fully collides, contacts, dissolves, and absorbs the water absorption liquid to further remove dust particles and other particulate matter in the organic waste gas.

[0041] In one embodiment, the wire mesh demisting layer 25 includes a filter mesh interwoven with silk threads, and the filter mesh is used to remove the droplets entrained in the organic waste gas. When the fine liquid droplets entrained in the organic waste gas pass through the filter mesh of the wire mesh demisting layer 25, the droplets hit the filter mesh and are adhered or adsorbed. After repeated adsorption of droplets, the extremely small droplets agglomerate and coalesce into large droplets. Under the action of gravity, the droplets move downward along the intersection of the woven filter mesh, while continuing to adsorb the droplets entrained in the gas. The enlarged droplets flow to the bottom of the wire mesh demisting layer 25 and fall down by the gravity of the droplets themselves.

[0042] The wastewater generated in the above process is treated and then flows into the recovery water pipe of the circulating water tank 6 through the water outlet at the bottom of the settling tower 2, and returns to the circulating water tank 6. In one embodiment, a tap water outlet is provided above the circulating water tank 6. After the water level of the circulating water tank 6 drops, water is replenished into the circulating water tank 6 at any time to reach the set water level again, so as to realize water circulation and water quality assurance in the settling tower 2.

[0043] The specific structure of the demisting filter box 3 is as follows:

[0044] In one embodiment, the demisting filter box 3 includes a primary filtration demisting filter box 3 and / or a medium-efficiency filtration demisting filter box 3. The primary filtration demisting filter box 3 is mainly used to filter dust particles larger than 5μm. The primary filtration adopts a metal mesh filter, which has an ideal uniform pore size distribution and excellent fluid permeability. It has high strength, can withstand thermal stress well, is easy to clean, and is suitable for high-cleanliness and high-safety purification systems. The primary filtration serves as the front-end filtration for the medium-efficiency filtration, which effectively reduces the load of the medium-efficiency filtration. The medium-efficiency filtration demisting filter box 3 adopts a plate-type medium-efficiency filtration. The filter material is a special non-woven fabric or glass fiber. It is made by hot-melt technology, has a stable structure, and has a low risk of leakage.

[0045] The micro-nano adsorption catalytic degradation device 4 is a device for treating organic waste gas. It utilizes the high specific surface area, high adsorption performance and catalytic degradation performance of micro-nano structural materials to achieve effective adsorption and catalytic degradation of pollutants. The micro-nano adsorption catalytic degradation device 4 has the advantages of high efficiency, environmental protection, stability, etc., and is suitable for treating large-volume organic waste gas. At the same time, the device also has the advantages of compact structure, easy operation, and simple maintenance.

[0046] In one embodiment, a centrifugal fan 7 is provided between the exhaust pipe 5 and the micro-nano adsorption catalytic degradation device 4. The organic waste gas treatment system provided by the utility model first allows the organic waste gas to enter the settling tower 2 for spraying, and then enters the demisting filter box 3 after passing through the first cyclone plate layer 21, the second cyclone plate layer 22, the third cyclone plate layer 23, the baffle plate layer 24 and the wire mesh demisting layer 25 from bottom to top of the settling tower 2. Under the interception, inertia, diffusion and electrostatic action of the multi-stage filter layer, the remaining small particle impurities and adhesions are almost completely removed. After the above-mentioned pretreatment process, the organic pollutants in the waste gas enter the micro-nano adsorption catalytic degradation device 4, and the organic pollutants in the waste gas are removed by adsorption catalytic degradation, and the clean air after treatment is discharged. The clean air after treatment is discharged from the exhaust pipe 5 under the action of the centrifugal fan 7.

[0047] The organic waste gas treatment system provided by the utility model can achieve deep treatment of volatile organic compounds and achieve harmless emission, achieving a VOCs removal rate of more than 90%, and the VOCs emission concentration can be reduced to 15.4mg / m 3 The deep purification effect is far lower than the current emission standard of 50mg / m 3 , achieve ultra-low concentration emissions, greatly improve the VOCs treatment technology level in the aluminum profile industry, and meet the requirements of green development in the industry.

[0048] The above is a preferred embodiment of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications are also considered to be within the scope of protection of the utility model.

Claims

1. An organic waste gas treatment system, characterized in that: include: A settling tower, wherein the settling tower is connected to an organic waste gas inlet pipe; A demisting filter box, the air inlet pipe of the demisting filter box is connected to the air outlet pipe of the settling tower; A micro-nano adsorption catalytic degradation device, wherein the air inlet pipe of the micro-nano adsorption catalytic degradation device is connected to the air outlet pipe of the demisting filter box; An exhaust pipe, the exhaust pipe is connected to an exhaust pipe of the micro-nano adsorption catalytic degradation device; The settling tower comprises a first cyclone plate layer, a second cyclone plate layer, a third cyclone plate layer, a baffle plate layer and a wire mesh demisting layer which are arranged in sequence from bottom to top.

2. The organic waste gas treatment system according to claim 1, characterized in that: The settling tower is connected to a circulating water tank, and the circulating water tank is provided with a first water supply pipe, a second water supply pipe, a third water supply pipe, a fourth water supply pipe and a recovery water pipe.

3. The organic waste gas treatment system according to claim 2, characterized in that: The first water supply pipe is connected to the first swirl plate layer; The second water supply pipe is connected to the second cyclone plate layer; The third water supply pipe is connected to the third swirl plate layer; The fourth water supply pipe is connected to the baffle layer; A water outlet is provided at the bottom of the settling tower, and the recovery water pipe is connected to the water outlet.

4. The organic waste gas treatment system according to claim 1, characterized in that: The organic waste gas inlet pipe is arranged below the first cyclone plate layer of the settling tower.

5. The organic waste gas treatment system according to claim 1, characterized in that: A swirl plate is provided in the first swirl plate layer, the second swirl plate layer or the third swirl plate layer. The swirl plate comprises a central blind plate and blades connected to the central blind plate.

6. The organic waste gas treatment system according to claim 1, characterized in that: A pneumatic device is provided in the baffle layer, and the pneumatic device is used to change the airflow direction of the organic waste gas in the baffle layer.

7. The organic waste gas treatment system according to claim 1, characterized in that: The wire mesh demisting layer comprises a filter mesh formed by interweaving silk threads, and the filter mesh is used to remove droplets entrained in the organic waste gas.

8. The organic waste gas treatment system according to claim 1, characterized in that: The demisting filter box includes a primary-efficiency demisting filter box and / or a medium-efficiency demisting filter box.

9. The organic waste gas treatment system according to claim 1, characterized in that: A centrifugal fan is provided between the exhaust pipe and the micro-nano adsorption catalytic degradation equipment.

Images