CN206950876U - A kind of industrial waste gas comprehensive high-efficiency ammonia process of desulfurization dust arrester - Google Patents

Abstract

The utility model relates to a comprehensive high-efficiency ammonia method desulfurization and dust removal device for industrial waste gas, which comprises a tank body. The lower end of the tank body is provided with a smoke inlet pipe, the upper end of the tank body is provided with a smoke outlet pipe, and the smoke outlet pipe located in the tank body is provided with a defogging pipe. A spray cooling pipe is installed vertically on the smoke inlet pipe, and a plurality of spray nozzles are arranged at intervals on the spray cooling pipe. Grid holes, the top of the grid plate is provided with multi-layer filter screens at intervals, and the size of the mesh holes on the filter screens from bottom to top decreases successively. The top of the tank body is equipped with a high-voltage power supply. The electrostatic precipitator area is formed between the filter screen plates at the end, the electrostatic precipitator area is equipped with a flushing device, and the bottom of the tank is provided with a filter circulation device. The device has high dust removal efficiency, strong adaptability, small footprint, and low investment. The dust concentration is reduced through the filter plate, atomization spray and high-voltage electric dust removal, so as to meet the dust emission concentration standard.

Description

A comprehensive high-efficiency ammonia desulfurization and dust removal device for industrial waste gas

technical field

The utility model belongs to the technical field of factory waste gas treatment, in particular to a comprehensive high-efficiency ammonia method desulfurization and dust removal device for industrial waste gas.

Background technique

A large amount of flue gas will be produced in industrial production activities, and the dust and sulfur oxides contained in the flue gas are all substances that pollute the atmosphere. Therefore, the problem of industrial flue gas pollution has always troubled people. With the development of the economy, the requirements for environmental protection are getting higher and higher, and the problem of industrial smoke pollution is becoming more and more prominent. It is difficult to promote because of too much investment and loss, and the effect of small investment is not ideal.

Utility model content

The technical problem to be solved by the utility model is to provide a comprehensive and high-efficiency ammonia method desulfurization and dust removal device for industrial waste gas, which has high dust removal efficiency, strong adaptability, small footprint and low investment.

In order to solve the above technical problems, the utility model provides a comprehensive and efficient ammonia desulfurization and dust removal device for industrial waste gas, which includes a tank body, a smoke inlet pipe is provided on the side of the lower end of the tank body, and a smoke outlet pipe is provided on the side of the upper end of the tank body. A demister is provided on the smoke outlet pipe, and a spray cooling pipe is vertically provided on the smoke inlet pipe. There are a plurality of spray nozzles, a grid plate is provided in the middle of the tank body, and a plurality of grid holes arranged side by side are arranged on the grid plate, and multi-layer filter screen plates are arranged at intervals above the grid plate, And the size of the mesh holes on the filter screen plate decreases successively from bottom to top. The top of the tank body is provided with a high-voltage power supply, and an electrostatic precipitator area is formed between the top of the tank body and the uppermost filter screen plate. A flushing device is provided in the electrostatic precipitator area, and a filtration circulation device is provided at the bottom of the tank.

The flushing device includes a clean water pool, a water pump, a water inlet pipe, and a spray pipe. The spray cooling pipe is connected with the clean water pond, one end of the water inlet pipe is connected with the clean water pond, and the other end of the water inlet pipe is connected with the water pump. One end of the shower pipe is connected to the water pump, and the other end of the spray pipe extends into the tank. The spray pipe is located above the uppermost filter plate, and the tank body space between the uppermost filter plate and the spray pipe forms an electric dust collector. In the area, there are multiple spray nozzles on the spray pipe extending into the tank.

The filter circulation device includes a filter pump, a filter, a circulating oxidation tank, a circulation pump, and a blower. The tank body and the water inlet of the filter pump are connected through a first connecting pipe, and the water outlet of the filter pump is connected to the water inlet of the filter. The water outlet of the filter is connected with the water inlet of the circulating oxidation tank through the third connecting pipe, the water outlet of the circulating oxidation tank is connected with the water inlet of the circulating pump through the fourth connecting pipe, and the circulating pump The water outlet is connected with the clear water tank through the fifth connecting pipe, and the circulating oxidation tank is connected with the blower through the sixth connecting pipe.

A stirrer is arranged in the circulating oxidation tank.

The spray nozzle comprises a cone-shaped hollow spray nozzle, the small end of the hollow spray nozzle is provided with a spray nozzle connecting pipe, the large end of the hollow spray nozzle is the outlet of the spray nozzle, and the outlet of the spray nozzle There is a spray plate covering the outlet, and a plurality of spray holes are arranged on the spray plate.

The section of the grid hole is "S" shape.

The surfaces of the grid plates, spray pipes and spray nozzles are all coated with anti-corrosion materials.

Beneficial effects of the utility model: the device has high dust removal efficiency, strong adaptability, small footprint, and low investment. The setting of the grid plate and grid holes can increase the distribution rate of the smoke by about 100 times, and the waste gas passes through When the multi-layer filter screen is used, the dust is isolated and falls down, and the concentration of dust is further reduced through atomization spraying and high-voltage electric dust removal, so as to meet the emission concentration standard of dust.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the spray nozzle of the present invention.

Detailed ways

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the following will further describe the implementation of the utility model in detail in conjunction with the accompanying drawings.

As shown in Figure 1, the utility model provides a comprehensive high-efficiency ammonia method desulfurization and dust removal device for industrial waste gas, including a tank body 1, a smoke inlet pipe 2 is provided on the side of the lower end of the tank body 1, and a smoke outlet pipe is provided on the side of the upper end of the tank body 1 3. A demister 4 is provided on the smoke outlet pipe 3 located in the tank body 1, and a spray cooling pipe 5 is vertically provided on the smoke inlet pipe 2, and the lower end of the spray cooling pipe 5 is a closed end, and The spray cooling pipe 5 located in the smoke inlet pipe 2 is provided with a plurality of spray nozzles 6 at intervals, and the middle of the tank body 1 is provided with a grid plate 7, and the grid plate 7 is provided with a plurality of grids arranged side by side. Grille hole 8, the cross section of the grille hole 8 is "S" shape, which can further increase the temperature of the flue gas after passing through the grille plate 6, speed up the mass transfer heat process of gas and liquid, and make the flue gas flow in the tank 1 The distribution is more uniform, which ensures the absorption efficiency of atomization spray and improves the efficiency of desulfurization and dust removal.

The upper part of the grid plate 7 is provided with a multi-layer filter screen 9 at intervals, and the size of the holes on the filter screen 9 from bottom to top decreases successively, and the top of the tank body 1 is provided with a high-voltage power supply 10, An electrostatic precipitator area 11 is formed between the top of the tank body 1 and the uppermost filter plate 9, and the electrostatic precipitator area 11 is provided with a flushing device 12, and the bottom end of the tank body 1 is provided with a filtration circulation device.

Described washing device 12 comprises clear water pool 12a, water pump 12b, water inlet pipe 12c, spray pipe 12d, and one end of water inlet pipe 12c is connected with clear water pool 12a, and the other end of water inlet pipe 12c is connected with water pump 12b, and spray pipe 12d One end of one end is connected with the water pump 12b, and the other end of the spray pipe 12d stretches in the tank body 1, and the spray pipe 12d is positioned at the top of the filter screen plate 9 at the top, between the filter screen plate 9 at the top end and the spray pipe 12d The space of the tank body 1 forms an electrostatic precipitator area 11. A stable electric field area is formed through a corrosion-resistant conductive glass fiber reinforced plastic anode tube, a herringbone needle-type cathode line, and a high-frequency constant current power supply. Charged, and then adsorbed on the cathode and anode under the action of the electric field force (these are all existing technologies, and will not be described in detail here). The shower pipe 12d extending into the tank body 1 is provided with a plurality of shower nozzles 6 .

As shown in Figure 2, the spray nozzle 6 includes a cone-shaped hollow spray nozzle 6a, the small end of the hollow spray nozzle 6a is provided with a spray nozzle connecting pipe 6b, and the large end of the hollow spray nozzle 6a is The outlet of the spray nozzle 6 is provided with a spray plate 6c covering the exit, and the spray plate 6c is provided with a plurality of spray holes 6d.

Described filter circulation device comprises filter pump 13, filter machine 14, circulating oxidation pool 15, circulation pump 16, air blower 17, and the water inlet of described tank body 1 and filter pump 13 is connected by first connecting pipe 18, and filter pump 13 The water outlet of the filter machine 14 is connected with the water inlet by the second connecting pipe 19, the water outlet of the filter machine 14 is connected with the water inlet of the circulation oxidation tank 15 by the third connection pipe 20, and the water outlet of the circulation oxidation tank 15 is connected with the water inlet of the circulation oxidation tank 15 The air inlet of the circulating pump 16 is connected through the fourth connecting pipe 21, the water outlet of the circulating pump 16 is connected with the clean water tank 12a through the fifth connecting pipe 22, and the circulating oxidation tank is connected with the blower through the sixth connecting pipe. The circulating oxidation tank 15 communicates with the air blower 17 through a sixth connecting pipe 23 . The circulating oxidation tank 15 is provided with a stirrer 24 to stir the slurry in the circulating oxidation tank 15 so as to improve the oxidation efficiency.

The surfaces of the grid plate 7 , the spray pipe 12 d and the spray nozzle 6 are all coated with anti-corrosion materials to prolong the service life of the grid plate 7 , the spray pipe 12 d and the spray nozzle 6 .

When in use, the high-temperature flue gas first passes through the spray nozzle 6 on the spray cooling pipe 5, and the spray cooling pipe 5 is arranged in a grid pattern at the smoke inlet pipe 2 for cooling the flue gas. Usually, two out of three are used. In the temperature measurement mode, the detection temperature is sprayed to cool down according to the set temperature, protecting the anti-corrosion part of the smoke inlet pipe 2, and reducing the flue gas flow at the same time. Reduce the temperature of the flue gas to 90°C to 110°C, the flue gas after lowering the temperature enters the tank body 1 through the smoke inlet pipe 2, the flue gas passes through the grille holes 8 on the grille plate 7, and the flue gas passes through the multi-layer When the filter screen plate 9 is used, the dust is isolated and falls down, and then the flue gas enters the electrostatic precipitator area 11, and under the action of the DC high-voltage electrostatic field, the surrounding gas is ionized, so that the surface of the dust or mist particles is charged, and the charged particles are in the air. Under the action of the electric field force, it moves towards the dust collection tube and settles on the dust collection pole. The water flows down from the top end of the dust collection tube to form a uniform and stable water film on the dust collection tube to take away the dust inside the tube. During this period, the flushing device 12 is intermittently opened to remove the dust on the pole tube. Finally, the flue gas passes through the demister 4, and the mist droplets collided by the corrugated plate arranged on the mist eliminator 4 can flow down concentratedly, reducing the mist entrainment phenomenon of the flue gas again, and ensuring that the flue gas can meet the requirements of the emission standard. Wherein the moisture after spraying is through the effect of filter pump 13, filter 14, and the impurity such as dust in the solution is filtered out, and the clear water after filtering is pumped in the clear water pool 12a again by circulation pump 16, is used for flushing device 12 and Spray cooling pipeline 5, accomplish recycling. During this period, the blower 17 is used to input oxygen into the circulation oxidation tank 15, and the agitator 23 is used to stir the slurry in the circulation oxidation tank 15, so as to achieve the purpose of improving the oxidation efficiency.

The device has high dust removal efficiency, strong adaptability, small footprint and low investment. The setting of the grid plate 6 and the grid hole 7 can increase the distribution rate of the smoke by about 100 times, and the exhaust gas passes through the multi-layer filter screen. When the dust is isolated and falls down, the concentration of dust is further reduced through atomization spraying and high-voltage electrostatic precipitator, so as to meet the emission concentration standard of dust.

If words such as "first" and "second" are used in this patent to define components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying Description, the above words have no special meaning.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and equivalents.

Claims (3)

1. a kind of industrial waste gas comprehensive high-efficiency ammonia process of desulfurization dust arrester, including tank body, tank body lower end side is provided with smoke-intake pipe road, Tank body upper side is provided with smoke pipeline, and the smoke pipeline in tank body is provided with demister, it is characterised in that：It is described enter cigarette Spraying cooling pipeline vertically is provided with pipeline, the lower end of the spraying cooling pipeline is blind end, and in smoke-intake pipe road Multiple spray spouts are interval with spraying cooling pipeline, the centre of the tank body is provided with flase floor, and flase floor is provided with multiple The grate opening being arranged side by side, the section of grate opening is serpentine, and multiple filtration web plate is interval with above the flase floor, and The size of mesh is sequentially reduced on screen pack from bottom to top, and the top of the tank body is provided with high-voltage suppling power, the tank Electric precipitation area is formed between the top of body and the screen pack of the top, the electric precipitation area is provided with flusher, the tank body Bottom be provided with filtering circulating device；

The flusher includes clear water reserviors, water pump, water inlet pipe, shower, and the spraying cooling pipeline is connected with clear water reserviors, One end of water inlet pipe is connected with clear water reserviors, and the other end of water inlet pipe is connected with water pump, and one end of shower is connected with water pump Logical, the other end of shower is stretched into tank body, and shower is located at the top of the screen pack of the top, the screen pack of the top Tank body space between shower forms electric precipitation area, and the shower stretched into tank body is provided with multiple spray spouts；It is described Spray spout includes tapered hollow spray spout, and microcephaly one end of hollow spray spout is provided with spray spout connecting tube, Major part one end of hollow spray spout is the outlet of spray spout, and the exit of spray spout is provided with the spray for covering the outlet Plate, shower plate are provided with multiple spray apertures；

The filtering circulating device includes filter pump, filter, cyclic oxidation pond, circulating pump, air blower, the tank body and filtering The water inlet of pump is connected by the first connecting tube, and the delivery port of filter pump passes through the second connecting tube phase with the water inlet of filter Connection, the delivery port of filter are connected with the water inlet in cyclic oxidation pond by the 3rd connecting tube, the water outlet in cyclic oxidation pond Mouth is connected with the water inlet of circulating pump by the 4th connecting tube, and delivery port and the clear water reserviors of circulating pump pass through the 5th connecting tube phase Connection, cyclic oxidation pond is connected with air blower by the 6th connecting tube.

A kind of 2. industrial waste gas comprehensive high-efficiency ammonia process of desulfurization dust arrester according to claim 1, it is characterised in that：It is described Agitator is provided with cyclic oxidation pond.

A kind of 3. industrial waste gas comprehensive high-efficiency ammonia process of desulfurization dust arrester according to claim 1 or 2, it is characterised in that： The flase floor, shower, spray spout surface are coated with anti-corrosion material.