CN108722092A - A kind of Tower for purifying waste gas - Google Patents

Abstract

The invention discloses an exhaust gas purification tower, which comprises a tower body. The tower body is provided with an air inlet and an air outlet, and the air outlet is connected to an exhaust fan through a pipeline. A gas filtering device is arranged above the air inlet inside the tower body, a water collecting funnel is arranged at the bottom of the tower body, and a sewage treatment device is arranged below the water collecting funnel. The sewage treatment device includes a water tank, and the inside of the water tank is provided with a filter tank and a reservoir connected to each other. It is separated from the reservoir by a first filter screen, and a baffle plate is arranged at the bottom of the first filter screen. The invention provides an exhaust gas purification tower. Compared with the traditional integrated purification tower, the purification tower and the sewage treatment device are separated, which is more convenient for cleaning the dust and sediment produced after sewage treatment, and reduces the labor intensity of cleaning personnel. Sewage treatment There is no need to stop production, and it has the advantages of good purification effect and low water consumption.

Description

A waste gas purification tower

technical field

The invention relates to the technical field of purification towers, in particular to an exhaust gas purification tower.

Background technique

Chemical, pharmaceutical, petroleum and other industries will produce a large amount of waste gas in the production process. These waste gases often need to be purified before they can be discharged. Waste gas purification is mainly aimed at industrial waste gases generated in industrial places, such as dust particles, flue gas smoke, odorous gases, toxic Harmful gas treatment work. Common waste gas purification includes factory smoke and dust waste gas purification, workshop dust waste gas purification, organic waste gas purification, waste gas odor purification, acid-base waste gas purification, chemical waste gas purification, etc. Correspondingly, a large number of waste gas purification equipment and spray purification towers have appeared on the market is one of a kind.

The circulating water tank at the bottom of the existing purification tower is closed. When the dust and sediment inside the circulating water tank accumulate to a certain extent, it is necessary for the cleaning personnel to open the maintenance door and enter the water tank for cleaning. Staying in the purification tower will seriously affect the health of maintenance personnel. At the same time, the filtering device in the circulating water tank in the existing purification tower is usually relatively simple, with only a single layer of filter screen or filling material. If the filtered wastewater is used for secondary spraying, it is easy to cause blockage of the spray pipe; if the wastewater is directly discharged, it will cause waste of water resources, making the purification tower not energy-saving and environmentally friendly.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a dust exhaust gas purification tower that is easy to clean, energy-saving and environment-friendly.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

An exhaust gas purification tower includes a tower body, an air inlet is provided on the lower side wall of the tower body, and an air outlet is arranged on the top of the tower body, and the air outlet is connected to a suction fan through a pipeline. The inside of the tower body is provided with a gas filtering device above the air inlet, the bottom of the tower body is provided with a water collection funnel, and a sewage treatment device is provided below the water collection funnel. The sewage treatment device includes a water tank, and the inside of the water tank is provided with a filter tank and a reservoir connected to each other. The bottom of the water collecting funnel is connected to a water guide pipe, and the water guide pipe extends to the top of the filter tank. The water storage tank is connected with a water pump through a pipeline. The filter tank and the reservoir are separated by a first filter screen, and a baffle plate for blocking dust and sediment is provided at the bottom of the first filter screen.

Further, the gas filter device includes a swirl plate, a filter layer and a water removal layer arranged sequentially from bottom to top, a first spray pipe is arranged between the swirl plate and the filter layer, and the filter layer A second spray pipe is provided between the water removal layer and the spray head of the second spray pipe is an atomizing spray head. The first spray pipe is connected to the water pump through the first branch pipe, the second spray pipe is connected to the water pump through the second branch pipe, and the first branch pipe and the second branch pipe are respectively provided with Manual valve.

Further, the filter pool is divided into a primary filter pool, a secondary filter pool and a tertiary filter pool, a buffer tank is fixed above the primary filter pool, and the water guide pipe extends to the buffer tank Inside, an overflow port is opened on the side wall of the buffer tank. The third-stage filter is connected to the reservoir through the first filter, the first-stage filter and the second-stage filter are separated by a second filter, and the second-stage filter is connected to the third The first-stage filter tanks are separated by a third filter screen, and the bottoms of the second filter screen and the third filter screen are respectively provided with baffles.

Further, in order to prevent the filter screen from being clogged, pebbles are respectively filled in the first-stage filter pool, the second-stage filter pool and the third-stage filter pool. The size of the pebbles in the first-stage filter pool is larger than that in the second-stage filter pool. The size of the pebbles in the pool is larger than the size of the pebbles in the tertiary filter pool.

Further, in order to achieve the best filtering effect, the length of the primary filter is 1.5-2.5 times the length of the secondary filter, and the length of the secondary filter is 1.5-2.5 times the length of the tertiary filter .

Further, the mesh number of the third filter screen is larger than that of the second filter screen, and the mesh number of the first filter screen is larger than that of the third filter screen.

Further, the height of the baffle is 100-300mm, the height of the second filter screen and the third filter screen is 500-700mm, and the highest points of the first filter screen, the second filter screen and the third filter screen are No more than the top surface of the sink.

Further, the bottom of the tank is provided with a drain valve, which is normally closed and opened only when the entire tank needs to be cleaned or the water level in the tank is too high.

Further, in order to prevent some flammable and explosive gases from exploding when the pressure is too high, a vent sheet is provided on the side wall of the middle part of the tower body.

Further, the water tank is provided with a float type liquid level sensor for constantly monitoring the water level of the water tank.

The present invention has the following beneficial effects: providing an exhaust gas purification tower, which is designed and manufactured separately from the purification tower and the sewage treatment device, a water tank with multi-stage filtration is provided, and a baffle is designed at the bottom of the filter screen. The sediment produced by the dust gathers and stays at the baffle. When cleaning the sink, you only need to focus on cleaning the baffle, which greatly reduces the labor intensity of the cleaning staff, saves time and effort, and prevents the cleaning staff from staying in the purification tower for too long. long-term effects on physical and mental health. The water carrying dust can be recycled after multi-stage filtration and will not cause blockage of the spray pipe. During sewage treatment, the purification tower does not need to stop working. At the same time, the improved purification tower has low water consumption. Compared with the traditional one-piece purification tower, the present invention has the advantages of reasonable structural design, high dust removal efficiency, good purification effect and reliable operation.

Description of drawings

Fig. 1 is a schematic view of the side structure of the present invention.

Fig. 2 is a schematic view of the elevation structure of the present invention.

Fig. 3 is a schematic top view of the water tank.

FIG. 4 is a schematic cross-sectional view along the direction A-A of FIG. 3 .

Explanation of symbols for main components: 1. tower body; 101. vent sheet; 102. maintenance door; 10. bracket; 11. air inlet; 12. air outlet; 13. water collecting funnel; Device; 201, the first spray pipe; 202, the second spray pipe; 203, the first branch pipe; 204, the second branch pipe; 21, the swirl plate; 22, the filter layer; 23, the water removal layer; 3, the sink 301, the first filter; 302, the second filter; 303, the third filter; 31, the filter; 311, the first filter; Cistern; 321, sewage valve; 322, float type liquid level sensor; 33, buffer tank; 331, overflow port; 4, water pump; 5, manual valve; 6, steel plate; 7, exhaust fan; 8, pebbles .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, a waste gas purification tower includes a tower body 1, the tower body 1 is installed on a bracket 10, an air inlet 11 is provided on the lower side wall of the tower body 1, and an air inlet 11 is provided on the top of the tower body 1. There is an air outlet 12, and the air outlet 12 is connected to the exhaust fan 7 through a pipeline, and the exhaust fan 7 is connected to a 15m high-altitude chimney through a pipeline. The side wall of the middle part of the tower body 1 is provided with a vent sheet 101, and the top and middle positions of the tower body 1 There are movable inspection doors 102 respectively.

Inside the tower body 1, a gas filter device 2 is provided above the air inlet. The gas filter device 2 includes a swirl plate 21, a filter layer 22 and a water removal layer 23 arranged in sequence from bottom to top. The swirl plate 21 and the filter layer 22 A first spray pipe 201 is provided between them, a second spray pipe 202 is provided between the filter layer 22 and the dewatering layer 23, and the spray head of the second spray pipe 202 is an atomizing spray head. The first spray pipe 201 is connected to the water pump 4 through the first branch pipe 203 , the second spray pipe 202 is connected to the water pump 4 through the second branch pipe 204 , and the first branch pipe 203 and the second branch pipe 204 are respectively provided with a manual valve 5 . A water collection funnel 13 is provided at the bottom of the tower body 1, and a sewage treatment device is provided below the water collection funnel 13.

As shown in Fig. 3 and Fig. 4, the sewage treatment device includes a water tank 3, and the water tank 3 has a rectangular structure. The water tank 3 is divided into a filter pool 31 and a water storage tank 32. The water storage tank 32 is connected to the water inlet of the water pump 4 through a pipeline. The water storage tank 32 is provided with a drain valve 321 and a float type liquid level for monitoring the water level from time to time. sensor 322 . The filter pool 31 and the reservoir 32 are separated by the first filter screen 301, and the bottom of the first filter screen 301 is provided with a steel plate 6 for blocking dust and sediment, and the height of the steel plate 6 is 200 mm.

The filter pool 31 is divided into a primary filter pool 311, a secondary filter pool 312 and a tertiary filter pool 313. The tertiary filter pool 313 is connected with the reservoir 32 through the first filter screen 301, and the primary filter pool 311 is connected with the secondary filter pool. The pools 312 are separated by the second filter screen 302, the secondary filter pool 312 and the tertiary filter pool 313 are separated by the third filter screen 303, and the bottoms of the second filter screen 302 and the third filter screen 303 are respectively arranged There are steel plates 6 (not shown in the figure), the primary filter pool 311, the secondary filter pool 312 and the tertiary filter pool 313 are respectively filled with pebbles 8, and the size of the pebbles 8 in the primary filter pool 311 is larger than that of the secondary filter pool The size of the cobblestones 8 in the 312, the size of the cobblestones 8 in the secondary filter tank 312 is greater than the size of the cobblestones 8 in the tertiary filter tank 313. The bottom of the collecting funnel 13 is connected to the water guide pipe 14, and a buffer tank 33 is fixed above the primary filter pool 311. The water guide pipe 14 extends to the inside of the buffer tank 33, and the side wall of the buffer tank 33 is provided with an overflow port 331.

The length of the primary filter pool 311 is twice the length of the secondary filter pool 312 , and the length of the secondary filter pool 312 is twice the length of the tertiary filter pool 313 . The mesh number of the third filter screen 303 is larger than that of the second filter screen 302 , and the mesh number of the first filter screen 301 is larger than that of the third filter screen 303 . The heights of the second filter screen 302 and the third filter screen 303 are both 600 mm, and the overall height of the water tank 3 is 950 mm.

The working principle of the present invention is: the waste gas enters the tower body 1 from the air inlet 11, and the waste gas passes through the swirl plate 21 of the gas purification device 2, the first spray pipe 201, the filter layer 22, the second spray pipe 202 and the In the water removal layer 23, the treated waste gas is discharged through the gas outlet 12 and discharged into the 15m high-altitude chimney through the pipeline. The water pump 4 is used to pump the water in the reservoir 32 to the first spray pipe 201 and the second spray pipe 202, and the dust-carrying sewage in the tower body 1 enters the buffer water tank 33 through the water collecting funnel 13 and overflows. Port 331 flows into the primary filter pool 311. After the sewage enters the primary filter pool 311, it enters the secondary filter pool 312 after being adsorbed by the large pebbles 8 and filtered by the first filter screen 301, and then is absorbed by the medium pebbles 8 and filtered by the second filter screen 302. Enter the three-stage filter pool 313, and finally enter the reservoir 32 after being absorbed by the fine-grained pebbles 8 and filtered by the third filter screen 303. . The water entering the reservoir 32 is recycled through the water pump 4 .

Although the invention has been particularly shown and described in connection with preferred embodiments, it will be understood to those skilled in the art that changes in form and details of the invention have been made without departing from the spirit and scope of the invention as defined by the appended claims. All changes are within the protection scope of the present invention.

Claims (10)

1. the lower sides of a kind of Tower for purifying waste gas, including tower body, the tower body are equipped with air inlet, set at the top of the tower body There are gas outlet, the gas outlet to be connected to exhaust fan by pipeline, it is characterised in that：In the air inlet inside the tower body Top be equipped with gas-filtering device, the tower body bottom is equipped with water collecting funnel, and the lower section of the water collecting funnel is equipped at sewage Device is managed, the sewage-treatment plant includes sink, and the sink is internally provided with interconnected filtering ponds and cistern, The water collecting funnel bottom connects aqueduct, and the aqueduct is extended to the over the surface in filter tank, and the cistern passes through pipe Road is connect with water pump, is separated by the first strainer between the filtering ponds and cistern, and the bottom of the first strainer is equipped with one piece Baffle for barrier dust sediment.

2. a kind of Tower for purifying waste gas as described in claim 1, it is characterised in that：The gas-filtering device include by down toward On set gradually overflowing board, filter layer and remove water layer, between the overflowing board and filter layer be equipped with the first spray tube, it is described Filter layer and except the second spray tube is equipped between water layer, the nozzle of second spray tube is atomizer, the described first spray Shower pipe is connect by the first branch pipe with the water pump, and second spray tube is connect by the second branch pipe with the water pump, institute It is respectively equipped with hand-operated valve on the first branch pipe and the second branch pipe stated.

3. a kind of Tower for purifying waste gas as described in claim 1, it is characterised in that：The filtering ponds be divided into by-pass filtration pond, Secondary filtration pond and three-stage filtration pond, a surge tank is installed with above the by-pass filtration pond, and the aqueduct extends Inside to the surge tank, overflow port is offered on the surge tank side wall, the three-stage filtration pond passes through described First strainer is connected to cistern, is separated by the second strainer between the by-pass filtration pond and secondary filtration pond, described It is separated by third strainer between secondary filtration pond and three-stage filtration pond, the bottom difference of second strainer and third strainer Equipped with baffle.

4. a kind of Tower for purifying waste gas as claimed in claim 3, it is characterised in that：The by-pass filtration pond, secondary filtration pond With cobblestone is separately filled in three-stage filtration pond, the cobblestone size in by-pass filtration pond be more than secondary filtration pond in goose ovum Stone size, the size of cobblestone is more than the size of cobblestone in three-stage filtration pond in secondary filtration pond.

5. a kind of Tower for purifying waste gas as claimed in claim 3, it is characterised in that：The length in the by-pass filtration pond is two level mistake 1.5-2.5 times of filter tank length, the length in the secondary filtration pond are 1.5-2.5 times of three-stage filtration pond length.

6. a kind of Tower for purifying waste gas as claimed in claim 3, it is characterised in that：The mesh number of the third strainer is more than the second filter The mesh number of net, the mesh number of first strainer are more than the mesh number of third strainer.

7. a kind of Tower for purifying waste gas as claimed in claim 3, it is characterised in that：The height of the baffle is 100-300mm, institute The height for stating the second strainer and third strainer is 500-700mm.

8. a kind of Tower for purifying waste gas as described in claim 1, it is characterised in that：The bottom of the sink is equipped with blowdown valve.

9. a kind of Tower for purifying waste gas as described in claim 1, it is characterised in that：The middle part of sliding channel of the tower body is equipped with and lets out exposure Piece.

10. a kind of Tower for purifying waste gas as described in claim 1, it is characterised in that：Liquid level sensor is equipped in the sink.