CN216909813U - A deodorizing system for domestic waste treatment - Google Patents

Abstract

The application provides a deodorization system for domestic waste treatment, which relates to the technical field of domestic waste treatment, wherein, it includes a deodorization tower, an activated carbon adsorption box and a discharge pipeline connected in sequence through pipes, and the gas to be treated is first deodorized. The tower carries out the first-stage deodorization operation, and then passes through the activated carbon adsorption box to carry out the second-stage deodorization operation. After the deodorization operation is completed, the exhaust gas is discharged into the atmosphere by the fan through the discharge pipe. The utility model has the characteristics of simple structure, low energy consumption, high purification efficiency and wide application range, and has the advantages of thorough purification of malodorous gas, strong anti-load fluctuation ability and strong anti-load fluctuation ability. It can treat a variety of mixed organic waste gas at the same time, with high purification rate, compact equipment structure, small footprint, simple and convenient maintenance and management, low operating cost, simple and safe operation, and good social value.

Description

A deodorizing system for domestic waste treatment

technical field

The utility model belongs to the technical field of domestic waste treatment, in particular to a deodorization system for domestic waste treatment.

Background technique

Deodorization tower exists as a kind of treatment equipment for environmental protection waste gas treatment. According to the working principle, it is divided into circulating water deodorization tower, lye deodorization tower, acid deodorization tower (alias: pickling tower). According to the material of the tower body, it is divided into glass fiber reinforced plastic deodorization tower, pp deodorization tower and stainless steel deodorization tower. Choose reasonable spray material and spray technology according to the different nature of waste gas.

When the dust-containing waste gas or oil-containing waste gas passes through the deodorization tower body, a liquid medium is sprayed out from the appropriate position inside the tower body (depending on the design), some of which are lye and some are sulfuric acid solution. If the waste gas contains acidity, choose lye spray to neutralize the acidity; if the waste gas contains alkalinity, choose sulfuric acid solution for absorption. The specific choice of acid-base solution depends on the nature of the exhaust gas and the company's own conditions. The waste gas without acid and alkali but containing oil and dust can be sprayed by the circulating water solution. When the exhaust gas enters from the bottom of the tower body, it contacts with the spray medium sprayed by the deodorization tower. After the contact, the exhaust gas or oil pollution is wrapped by water droplets, and the water droplets wrapping the pollutants again collide with the surface area and increase the gravity. When the gravity increases, the water droplets that wrap the pollutants will fall to the bottom of the deodorization tower under the influence of gravity, the heavier pollutants will sink to the bottom of the tower body, and the lighter pollutants will float on the surface of the circulating water body.

However, in the process of realizing the technical solutions in the embodiments of the present application, the inventor of the present application found that the above-mentioned technology at least has the following technical problems:

When the existing deodorization system is used, due to the unscientific structure design, the deodorization effect is not ideal, so there is room for improvement. Affect deodorization and affect the working environment.

SUMMARY OF THE INVENTION

In order to overcome the shortcomings of the unscientific design of the existing deodorization system and the lack of circulating treatment operations for the generated sewage, the embodiment of the present application provides a deodorization system for domestic waste treatment, which is improved through optimization of the structure, A two-stage spray system and two-stage packing are set up, and a swirl plate and a demisting device are set at the same time, and a filter circulating water tank is also set up, which optimizes and improves the system structure, improves the deodorization effect, and can meet the actual needs. Deodorant needs.

The technical scheme adopted by the embodiment of the present application to solve its technical problem is:

A deodorization system for domestic waste treatment, comprising a deodorization tower, an activated carbon adsorption box and a discharge pipeline connected in sequence through pipelines. The gas to be treated first passes through the deodorization tower for first-stage deodorization operation, and then passes through activated carbon adsorption. The second-stage deodorization operation is performed on the box body. After the exhaust gas is deodorized, it is discharged into the atmosphere by the fan through the exhaust pipe.

Among them, the deodorizing tower is sequentially provided with a water collecting and draining port, an air inlet, a first packing layer, a swirl plate, a first spraying system, a second packing layer, a second spraying system, and a demisting device from the bottom to the top. and the air outlet; the water collection and drainage port is connected with the water inlet of the filter circulating water tank through the pipeline, and the first spray system and the second spray system are connected with the water outlet of the filter circulating water tank through the pipeline; Sewage generated during the operation; the waste gas to be treated enters the deodorization tower through the air inlet under the action of the high-speed fan; the setting of the first packing layer and the second packing layer can better increase the amount of liquid and gas. Contact area; by setting the first spraying system and the second spraying system for spraying, the exhaust gas and the liquid are fully contacted to absorb the acidic or alkaline dirt contained in the exhaust gas; by setting up a demisting device, it is used for separation The droplets carried by the exhaust gas of the deodorization tower; the wastewater generated during the deodorization process is treated by filtering the circulating water tank, so that it can be recycled.

Among them, the activated carbon adsorption box is connected to the air outlet of the deodorization tower through the circulation pipeline, and the exhaust gas is adsorbed and treated by the activated carbon adsorption box.

Among them, the discharge pipeline is connected to the mouth of the activated carbon adsorption box through the circulation pipeline.

Preferably, the water collecting and draining port is in the shape of a horn with a large upper and a small lower, the top of the water collecting and draining port is externally connected to the inner wall of the deodorizing tower, the bottom of the water collecting and draining port is connected to the filtering and circulating water tank through a pipeline, and the water collecting and draining port is set in the shape of a horn. , it is convenient to recycle the sewage generated in the process.

Preferably, the air inlet of the deodorizing tower is provided with a filter screen, through which part of the pollutants with large particle diameters are filtered to prevent them from entering the subsequent devices and affecting the operation efficiency.

Preferably, the packing layer is a Pall ring packing layer, and the Pall ring packing is a new type of packing, which is obtained by improving some main shortcomings of Raschig rings. Layered rectangular small windows, the small window blades overlap at the center of the ring, and the upper and lower layers of windows overlap each other. The main difference between it and Raschig ring packing is that a rectangular window hole is opened on the side wall, and the vanes of the window hole are bent into the center of the ring. Due to the opening of the ring wall, the distribution performance of gas and liquid is larger than that of Raschig ring. The improvement, especially the inner surface area of the ring can be fully utilized.

Preferably, the swirl plate includes an outer cylinder and an inner cylinder, the inner cylinder is arranged at the center of the outer cylinder, and several swirl sheets with adjustable angles are arranged between the inner cylinder and the outer cylinder. The two ends of the sheet are hinged with the inner cylinder and the outer cylinder respectively, and the outer cylinder is provided with a locking device for positioning the swirl sheet; the swirl plate is such as a windmill blade, and the airflow rotates and centrifugally moves through the blades, and the liquid is evenly distributed to the swirl plate. A blade, which forms a rotating and centrifugal effect with the upward rotating airflow, sprays it into small water droplets, and slams it towards the tower wall. The gas to be treated enters from the bottom of the deodorization tower and exits from the top through the action of the fan. The liquid enters from the upper part of the tower and exits from the lower part. The relative movement of the airflow and the liquid in the tower greatly improves the absorption and fusion effect, so as to purify the acid and alkali substances in the organic waste gas. The swirl plate has a firm and reliable structure, high-efficiency rotation effect, and is provided with an acid-proof and anti-corrosion layer on the surface of the swirl plate, which can prolong the service life of the swirl plate, ensure continuous work and save costs, and has a simple structure, strong practicability, and high safety. The effect is good, which is conducive to promotion.

Preferably, the spray system includes a spray main pipe, the spray main pipe is arranged parallel to the ground, a plurality of connection ports are arranged side by side on both sides of the spray main pipe, the connection ports are connected with a spray branch pipe, and the spray branch pipe is provided with a number of nozzles, The spraying system has better spraying effect and higher waste gas treatment efficiency.

Preferably, the defogging device is a defogger type defogger, comprising a fixed bracket, on which a plurality of bent plates with the same structure are arranged in parallel and at equal intervals, and the distance between the bent plates is 30-40 mm. When the mist-containing gas flows through the mist eliminator at a certain speed, due to the inertial impact of the gas, the mist collides with the bent plate and the droplets gathered are so large that the gravity generated by itself exceeds the upward force of the gas When combined with the surface tension of the liquid, the droplets are separated from the baffle surface. The bent structure increases the chance of mist being trapped, thereby greatly improving the efficiency of mist removal. After the gas passes through the corrugated plate mist eliminator, it basically does not contain mist, which realizes the separation of gas and liquid, so that the purified gas flowing through the mist eliminator meets the requirements of demisting and is discharged.

Preferably, the filtration circulating water tank includes a first filter tank, a second filter tank and a third filter tank connected in sequence, the second filter tank is connected to the water outlet on the top of the first filter tank through a pipeline, and the second filter tank is further provided with Dosing pipe, the second filter tank is connected to the dosing device through the dosing pipe; the third filter tank is connected to the water outlet at the top of the second filter tank through a pipeline, the top of the third filter tank is connected to a tap water pipeline through a pipeline, and the third filter tank The top is also connected to a circulating water pump through a pipeline, and the first spraying system and the second spraying system are connected to the circulating water pump. The generated sewage is first filtered through the first filter tank, and then filtered through the second filter tank for precipitation treatment, and then passed through the third filter tank for re-filtration and sedimentation treatment, and then returned to the spray system through the circulating water pump for spraying. Through the dosing device, the impurity components in the sewage are better treated, so that the water quality after circulation is better, which greatly improves the adsorption and deodorization operation in the deodorization tower, and also reduces the repair rate of the equipment and improves the equipment. long service life and reduce the cost of waste gas treatment.

Preferably, the dosing device is also provided with a dosing control system, including a signal filtering device, a central controller, and a dosing pump control device connected in series through wires in sequence; and a turbidity detector and a flow detector, which are electrically connected to each other. The signal filtering device is connected and installed on the water outlet of the second filter tank respectively. The turbidity and flow rate of the treated sewage are respectively checked by the turbidity detector and the flow detector. After collecting the relevant information through the signal filtering device, it is fed back to the central controller to process the data, and then the control device of the dosing pump is controlled to achieve the control The effect of the dosing dose improves the accuracy of sewage treatment, further improves the circulating water quality, improves the adsorption and deodorization operation efficiency in the deodorization tower, reduces the repair rate of the equipment, increases the service life of the equipment, and reduces the waste gas treatment. cost.

Preferably, the activated carbon adsorption box is provided with an air inlet, a filter assembly and an exhaust port in sequence from the left end to the right end; the filter assembly includes a multi-layer horizontally arranged activated carbon placement drawer, and the activated carbon placement drawer plate is provided with multiple ventilation holes. The exhaust gas is powered by the fan, and the positive or negative pressure enters the activated carbon adsorption box. Due to the unbalanced and unsaturated molecular attraction or chemical force on the solid surface of the activated carbon, when the solid surface is in contact with the gas, it is It can attract gas molecules to concentrate and keep them on the solid surface, so that the pollutants are adsorbed. After the exhaust gas is adsorbed by the filter, the purified gas is discharged at high altitudes, and the saturated activated carbon can be recycled and regenerated to reduce costs.

By setting the activated carbon adsorption box, it can achieve: (1) High adsorption efficiency: it can process a variety of mixed organic waste gas at the same time, and the purification rate is high. (2) Small footprint and easy maintenance: The equipment has a compact structure, a small footprint, simple and convenient maintenance and management, and low operating costs. (3) Strong applicability: fully enclosed type, can be used indoors and outdoors, and has a wide range of applications. (4) Safety and environmental protection: It adopts automatic control operation design, which is easy and safe to operate.

The scope of application of the deodorization system: (1) Various harmful gases such as acid mist (H ₂ S0 ₄ ), hydrogen chloride (HCL) and hydrogen fluoride (HF), chromic acid mist (CrO3), hydrogen cyanic acid (HCN), sulfuric acid Treatment of water-soluble gases and odorous gases such as hydrogen (H ₂ S), ammonia (NH ₃ ), alkali vapor, etc.; (2) Deodorization devices in sewage treatment plants; (3) Seepage water storage in landfills Pool waste gas treatment; (4) waste gas treatment from incinerators and industrial furnaces. (5) Exhaust gas treatment in semiconductor optoelectronics industry, printed circuit board industry, electroplating, pretreatment, chemical industry, silicon material cleaning, printing industry, pharmaceutical industry, etc.

The advantages of the embodiments of the present application are: the utility model has the characteristics of simple structure, low energy consumption, high purification efficiency and wide application range, and has the advantages of thorough purification of malodorous gas, strong resistance to load fluctuation, and strong resistance to load fluctuation. It is introduced into the deodorization tower by the air duct. After passing through the packing layer, the exhaust gas and the liquid undergo full contact absorption and neutralization reaction in two phases. , and finally discharged into the atmosphere by the fan. The absorption liquid is recycled at the bottom of the tower, and finally returned to the bottom of the tower for recycling, so as to avoid the sewage generated in the process from affecting the environment.

Description of drawings

Fig. 1 is the structural representation of the deodorizing system of the present invention;

Fig. 2 is the schematic diagram of the internal structure of deodorizing tower in the present invention;

Fig. 3 is the structural schematic diagram of the swirl plate in the present invention;

Fig. 4 is the structural diagram of the spray system in the present invention;

Fig. 5 is the longitudinal sectional view of baffle type mist eliminator in the present invention;

Fig. 6 is the structure diagram of filtering circulating water tank in the present invention;

Fig. 7 is the structural diagram of the dosing control system in the present invention;

FIG. 8 is a schematic structural diagram of an activated carbon adsorption box in the present invention.

Detailed ways

The embodiments of the present application solve the problem of unscientific design of the deodorization system in the prior art and no recycling operation of the generated sewage by providing a deodorization system for domestic waste treatment. The deodorization system is improved by optimizing the structure. A two-stage spray system and two-stage packing are set up, and a swirl plate and a demisting device are set at the same time, and a filter circulating water tank is also set up, which optimizes and improves the system structure, improves the deodorization effect, and can meet the actual needs. Deodorant needs.

The technical solutions in the embodiments of the present application are to solve the above-mentioned technical problems, and the general idea is as follows:

Example 1:

A deodorization system for domestic waste treatment includes a deodorization tower 10, an activated carbon adsorption box 20 and a discharge pipeline 30 connected in sequence through pipelines. The gas to be treated first passes through the deodorization tower 10 to perform a first-stage deodorization operation, Then, the second-stage deodorization operation is carried out through the activated carbon adsorption box 20. After the deodorization operation is completed, the exhaust gas is discharged into the atmosphere by the fan through the discharge pipeline 30.

Among them, the deodorization tower 10 is sequentially provided with a water collection and drainage port 11, an air inlet 12, a first packing layer 13, a swirl plate 14, a first spray system 15, a second packing layer 16, a second The spray system 17, the defogging device 18 and the air outlet; the water collection and drainage port 11 is connected to the water inlet of the filter circulating water tank 40 through the pipeline, and the first spray system 15 and the second spray system 17 are connected to the filter circulating water tank 40 through the pipeline. The water outlet; the water collection and drainage outlet 11 is used to collect the sewage generated during the deodorization operation of the deodorization tower 10; the waste gas to be treated enters the deodorization tower 10 through the air inlet under the action of the high-speed fan; the first packing layer 13 And the setting of the second packing layer 16 can better increase the contact area between the liquid and the gas; by setting the first spray system 15 and the second spray system 17 for spraying, the exhaust gas is fully contacted with the liquid to adsorb Acid or alkaline dirt contained in the exhaust gas; by setting the mist removal device 18, it is used to separate the droplets carried by the exhaust gas of the deodorization tower 10; the waste water generated during the deodorization process is treated by filtering the circulating water tank 40, so that it can be circulated use.

Among them, the activated carbon adsorption box 20 is connected to the air outlet of the deodorization tower 10 through a circulation pipeline, and the activated carbon adsorption box 20 further adsorbs and treats the exhaust gas.

Among them, the discharge pipeline 30 is connected to the air outlet of the activated carbon adsorption box through the circulation pipeline.

Example 2:

On the basis of Embodiment 1, in this embodiment, in order to facilitate the recycling of sewage generated in the process, in this embodiment, the water collecting and draining port 11 is in the shape of a trumpet with a large upper and a small lower, and the top of the collecting and draining port 11 The bell mouth is externally connected to the inner wall of the deodorizing tower 10, and the bottom of the water collecting and draining port 11 is connected to the filtering circulating water tank 40 through pipes.

Example 3:

On the basis of Embodiment 1-2, in this embodiment, in order to prevent pollutants with large particle diameters from entering the subsequent devices and affecting the operation efficiency, in this embodiment, the air inlet of the deodorizing tower 10 is provided with a filter screen, which passes through The filter will partially filter.

Example 4:

On the basis of Embodiments 1-3, in this embodiment, in order to improve the absorption performance of gas and liquid, in this embodiment, the packing layer is a Pall ring packing layer.

Example 5:

On the basis of Embodiment 1, in this embodiment, in order to improve the effect of absorption and fusion, so as to purify the acid and alkali substances in the organic waste gas, in this embodiment, the swirl plate 14 includes an outer cylinder 141 and an inner cylinder The inner cylinder 142 is arranged at the center of the outer cylinder 141, and several swirl sheets 143 with adjustable angles are arranged between the inner cylinder 142 and the outer cylinder 141. The body 142 and the outer cylinder 141 are hingedly connected, and the outer cylinder 141 is provided with a locking device 144 for positioning the swirl sheet.

Example 6:

On the basis of Embodiment 1, in this embodiment, in order to improve the spraying effect of the spraying system and improve the efficiency of waste gas treatment, in this embodiment, the spraying system includes a spraying main pipe 151, and the spraying main pipe 151 is arranged parallel to the ground and sprays A plurality of connection ports are arranged side by side on both sides of the shower main pipe 151 in sequence, and the connection ports are connected with a spray branch pipe 152 , and a plurality of nozzles are arranged on the spray branch pipe 152 .

Example 7:

On the basis of Embodiment 1, in this embodiment, in order to realize gas-liquid separation, the purified gas can be discharged after meeting the defogging requirements. The bracket 181 and the fixed bracket 181 are provided with a plurality of bending plates 182 with the same structure in parallel and at equal intervals, and the distance between the bending plates 182 is 30-40 mm.

Example 8:

On the basis of Example 1, this example improves the water quality after circulation, improves the adsorption and deodorization operation in the deodorization tower 10, reduces the repair rate of the equipment, and increases the service life of the equipment in order to treat the impurity components in the sewage. , to reduce the cost of waste gas treatment. In this embodiment, the filter circulating water tank 40 includes a first filter tank 401, a second filter tank 402 and a third filter tank 403 connected in sequence, and the second filter tank 402 is connected to the first filter tank 402 through a pipeline. The water outlet at the top of the filter tank 401, the second filter tank 402 is also provided with a dosing pipe 404, the second filter tank 402 is connected to the dosing device 405 through the dosing pipe 404; the third filter tank 403 is connected to the second filter tank 402 through a pipeline The water outlet at the top, the top of the third filter tank 403 is connected with a tap water pipeline 406 through a pipeline, the top of the third filter tank 403 is also connected to a circulating water pump 407 through a pipeline, and the first spray system 15 and the second spray system are connected through the circulating water pump 407. System 17.

Example 9:

On the basis of Example 8, in order to improve the accuracy of sewage treatment, this example further improves the circulating water quality, improves the efficiency of the adsorption and deodorization operation in the deodorization tower 10, reduces the repair rate of the equipment, and improves the use of the equipment In this embodiment, the dosing device 405 is also provided with a dosing control system 50, including a signal filtering device 51, a central controller 52, and a dosing pump control device connected in series through wires in sequence. 53; further comprising a turbidity detector 54 and a flow detector 55, which are respectively electrically connected to the signal filtering device 51 and are respectively installed at the water outlet of the second filter tank 402.

Example 10:

On the basis of Embodiment 1, in this embodiment, in order to be able to process a variety of mixed organic waste gases at the same time and improve the purification rate, in this embodiment, the activated carbon adsorption box 20 is sequentially provided with an air inlet 201, a filter from the left end to the right end Assembly 202 and exhaust port 203; the filter assembly 202 includes a multi-layer horizontally arranged activated carbon placement drawer, and a plurality of ventilation holes are provided on the activated carbon placement drawer plate.

Finally, it should be noted that: obviously, the above-mentioned embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. However, the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. a deodorization system for domestic waste treatment, is characterized in that, comprises: Deodorizing tower, the deodorizing tower is provided with water collecting and draining port, air inlet, first packing layer, swirl plate, first spraying system, second packing layer, second spraying system, deodorant The mist device and the air outlet; the water collecting and draining port is connected with the water inlet of the filtering circulating water tank through the pipeline, and the first spray system and the second spraying system are connected with the water outlet of the filtering circulating water tank through the pipeline; The activated carbon adsorption box is connected to the air outlet of the deodorization tower through the circulation pipeline; The discharge pipeline is connected to the air outlet of the activated carbon adsorption box through the circulation pipeline. 2. The deodorizing tower as claimed in claim 1, wherein the water collecting and draining outlet is in the shape of a trumpet that is large at the top and small at the bottom; The filtered circulating water tank is connected by piping. 3. The deodorizing tower according to claim 2, wherein the air inlet of the deodorizing tower is provided with a filter screen. 4. The deodorizing tower according to claim 3, wherein the packing layer is a Pall ring packing layer. 5. deodorization tower as claimed in claim 1, is characterized in that, described swirl plate comprises: outer cylinder; The inner cylinder is arranged at the center of the outer cylinder, and between the inner cylinder and the outer cylinder, a number of swirl sheets with adjustable angles are arranged, and the two ends of the swirl sheets are respectively connected with the inner cylinder and the outer cylinder. hinged; The outer cylinder is provided with a locking device for positioning the swirl piece. 6. The deodorizing tower of claim 1, wherein the spray system comprises: The sprinkling main pipe is arranged parallel to the ground, the two sides of the sprinkling main pipe are arranged side by side with a plurality of connection ports, the connection ports are connected with a spray branch pipe, and a number of nozzles are arranged on the spray branch pipe. 7. deodorizing tower as claimed in claim 1, is characterized in that, described mist removing device is baffle type mist eliminator, comprising: The fixed bracket is provided with several bending plates with the same structure in parallel and at equal intervals, and the distance between the bending plates is 30-40mm. 8. The deodorizing tower as claimed in claim 1, wherein the filter circulating water tank comprises: the first filter tank; The second filter tank is connected to the water outlet at the top of the first filter tank through a pipeline, the second filter tank is also provided with a dosing pipe, and the second filter tank is connected to the dosing device through the dosing pipe; The third filter tank is connected to the water outlet at the top of the second filter tank through a pipeline. The top of the third filter tank is connected to a tap water pipeline through a pipeline. The top of the third filter tank is also connected to a circulating water pump through a pipeline, and is connected to the first spray through the circulating water pump. system and the second sprinkler system. 9. The deodorizing tower according to claim 8, wherein the dosing device is also provided with a dosing control system, comprising: The signal filtering device, the central controller and the dosing pump control device connected in series through the wires in sequence; It also includes a turbidity detector and a flow detector, which are respectively electrically connected to the signal filtering device and are respectively installed at the water outlet of the second filter tank. 10. The deodorizing tower according to claim 1, wherein the activated carbon adsorption box is provided with an air inlet, a filter assembly and an exhaust port in sequence from the left end to the right end; The filter assembly includes a multi-layered horizontally arranged activated carbon placement drawer, and a plurality of ventilation holes are provided on the activated carbon placement drawer plate.

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