CN115888364A - Superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system - Google Patents

Abstract

In the superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system of the present invention, the solid spray is composed of carbon black carbon black dust dust collection tank and fan, dust exhaust pipe and intake pipe, and the liquid spray is composed of alkaline solution. The liquid storage tank, the liquid supply pump and the liquid discharge pipe, and the gas spraying are composed of an air compressor, an air storage tank and an air pressure pipe, and each pipeline is equipped with a regulating valve, which is composed of a superimposed gas-solid-liquid three-phase spraying device. A set of pretreatment system, when the flue gas containing dust, tar, sulfide and mist concentration under high temperature and hot pressure flows into the flue gas collection pipe and is connected to a superimposed gas-solid-liquid three-phase spray device, it is adjusted to suit the acid-base balance The molar ratio and gas-liquid ratio, the gas-solid ratio of adsorbed dusty tar, start the dust exhaust fan, liquid supply pump, air compressor and 0.5MPa compressed air, and respectively send the carbon black dust, alkaline solution and compressed air to the High-efficiency pretreatment of high-temperature hot-pressed asphalt flue gas spraying to degrade sulfide and adsorb tar in a superimposed gas-solid-liquid three-phase spray device.

Description

Superimposed gas-solid-liquid three-phase spray device and bitumen flue gas pretreatment system

technical field

The invention relates to the pretreatment of flue gas in the field of environmental protection, especially for asphalt flue gas containing dust, tar and mist droplets under high-temperature hot-pressing conditions, using a superimposed gas-solid-liquid three-phase spray device and asphalt fume The gas pretreatment system realizes spray cooling to degrade sulfide and adsorb tar dust, the purpose of which is to improve the effect of flue gas pretreatment.

Background technique

In the field of environmental protection, there will be drift and dissociation during the treatment of asphalt flue gas containing dust tar and mist under high-temperature hot-pressing conditions. The use of spray cooling and honeycomb tube electrostatic capture tar treatment process results in the capture of dust tar and ultra-fine mist droplets and poor condensation effect. In order to make up for the defects in the flue gas pretreatment and system and the key short-board technology of the treatment process, the superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system technology are applied. It can effectively fill and solve the defects of the current asphalt flue gas treatment, and is suitable for the needs of the low-cost environmental protection market.

Contents of the invention

The present invention solves the above-mentioned technical problems through a series of technical features.

The superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system are characterized in that: the superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system are characterized in that: for solid The spraying is to select the carbon black dust, put the carbon black dust into the carbon black dust dust collection tank, the dust discharge pipe, the intake pipe and the intake branch pipe are set in the tank, and the dust discharge pipe is connected to the dust discharge damper and the dust discharge fan , through the power of the dust exhaust fan, the carbon black dust flows into the dust exhaust pipe. The inflow of outdoor air through the intake pipe is used to draw the carbon black dust from the dust exhaust pipe, and the air inflow from the intake branch pipe is used to drive the flow and air flow of the carbon black dust. Solid mixing synergy; for liquid spraying, the alkaline solution is put into the liquid storage tank and mixed with reclaimed water to get diluted, and the liquid supply pipe connected to the liquid storage tank, the liquid supply valve and the liquid supply pump are coordinated; For gas spraying, the air compressor is used to compress the air to a pressure above 0.5MPa, through the storage of the air storage tank and the deployment of the compressed air pipe, and then through the various regulating valves configured on the gas-solid-liquid pipeline to cooperate The superimposed gas-solid-liquid three-phase spraying device is combined into a set of asphalt flue gas pretreatment system.

The superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system are characterized in that: the carbon black dust dust collection tank is composed of a cylindrical cylinder and a cone, and a row is arranged at the bottom of the cone. The dust pipe is connected to the air intake pipe, and the air intake pipe running through the cylindrical cylinder is connected to the air intake valve. An air intake branch pipe is bypassed on the air intake pipe in the cylindrical cylinder body. The diameter of the air intake branch pipe is set to The size of the trachea diameter is 1/3; the dust discharge pipe running through the bottom of the cone is bypassed and connected to the drain pipe. It is connected with the dust exhaust damper, dust exhaust fan, dust exhaust one-way valve, and dust exhaust air pipe; the cylinder bracket used to support the carbon black dust collection tank of the cylindrical cylinder is set on the three sides of the outer circle of the cylindrical cylinder. One is at an equal angle, and the height distance H between the bottom of the cylinder bracket and the center of the dust discharge pipe is set to a size between 250 and 350 mm.

The superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system are characterized in that: the distance M between the center of the air inlet pipe running through the cylindrical cylinder and the center of the cylindrical cylinder is set to be between 80 and 120mm The size, the distance O between the horizontal center of the intake pipe and the cover plate of the cylindrical cylinder is 120-150mm, the fixed bracket of the intake pipe is provided between the intake pipe and the bottom of the cone; the dust discharge pipe is set The semicircular opening is flush with the bottom of the cone and then welded and fixed. On the upper part of the dust discharge pipe with the semicircular opening, there are multiple round holes with a diameter of more than 2 mm on the slope and side of the cone, and the distance between the round holes is 4. ～5mm, and the height is greater than 200mm, the semi-cone metal screen with a cone angle of 60°, a steel plate without a round hole is set on the top of the semi-cone metal screen, and the inlet bypassed through the intake pipe The air branch pipe is inserted on the top of the semi-cone metal screen, and the semi-cone metal screen is placed on the upper part of the cone and the unopened dust discharge pipe to be fixed by welding; the air intake branch is inserted on the semi-cone metal screen The top, the purpose of which is that the air flowing in through the intake branch pipe is used to drive the carbon black dust through the half-cone metal screen. When it flows through the dust discharge pipe, it can form a pointed downward cone, which can leave the necessary air drive Space, using air pressure to allow carbon black dust to naturally sink and flow into the dust discharge pipe at the opening.

The superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system are characterized in that: the side of the cylindrical cylinder is respectively provided with a water inlet pipe and a dust return pipe for cleaning the cylinder and can be visually inspected. Observe the input carbon black dust capacity and height, and the observation hole with transparent plexiglass, the width is set to 120mm, the height is set to a size between 500 and 700mm, and the observation hole is set at a position 22.5 ⁰ away from the center line; The dust return pipe running through the inside and outside of the cylindrical cylinder is connected with the dust return valve and the dust exhaust duct. Once the dust exhaust fan stops running, the dust exhaust one-way valve will be automatically closed, and the dust return air door will be opened. The carbon black dust in the dust air pipe can flow into the carbon black dust dust collection tank through the dust return pipe and the dust return air door to be stored and reused.

The superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system are characterized in that: the liquid storage tank is made of glass fiber reinforced plastic, and the top is provided with a safety valve that can open the valve when the pressure is greater than or equal to 0.2MPa The liquid storage and exhaust pipe provided by the safety valve is connected with the smoke collection pipe; the bottom of the liquid storage tank is provided with a sewage pipe connected with the sewage valve, and the liquid storage tank is provided with an alkaline solution pressure pipe. The water inlet valve connected to the reclaimed water inlet pipe, the external hose joint, the liquid inlet valve and the alkaline solution pressure inlet pipe are connected to each other, and the gas-liquid ratio suitable for spraying and degrading sulfides and the alkaline solution that balances the acid gas Molar ratio capacity, use the alkaline solution tanker to put it into the liquid storage tank through the liquid inlet valve and the external hose joint and the alkaline solution pressure pipe to mix with the reclaimed water flowing in through the reclaimed water inlet pipe and the water inlet valve, and then dilute. The liquid supply pipe set on the liquid storage tank is connected with the liquid supply valve and the liquid supply pump; after the air is compressed to a pressure of 0.5 by an air compressor, the air storage tank with a pressure of not less than or equal to 1.0MPa is configured through the compressed air pipe. For storage, air ball valves are arranged at the air inlet and outlet of the air storage tank.

The superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system are characterized in that: the superimposed gas-solid-liquid three-phase spraying device can be processed and manufactured with the same caliber pipe as the flue gas collecting pipe, There should be flanges at both ends of the pipe, and three oval holes with equal angles and pipe diameters of DN32 to DN50 should be set on the side of the pipe at a height L of 150 to 200mm from the flange, all at an angle of 45 ^° . Insert three pipes of the same diameter between DN32 and DN50 in the position of the nozzle for the liquid supply pipe for alkaline solution spraying and the dust discharge pipe for carbon black dust spraying, and the central extension line of the three nozzles and the superimposed gas The center lines of the solid-liquid three-phase spray devices intersect, and the length of the nozzles of the device should be less than or equal to 100mm, and it should be fixed by welding.

The superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system are characterized in that three alkaline solution spray supply pipes with the same diameter between DN32 and DN50, and carbon black dust spray Use the 90 ⁰ elbow of the dust exhaust duct to open a round hole with a size between 15 and 20mm, and then insert compressed air pipes with a diameter between DN10 and DN15, and insert the compressed air pipes into the alkaline solution to spray the liquid supply Pipe, carbon black dust spray with the depth distance K of the dust exhaust air pipe is 50 ~ 100mm in size and then welded and fixed; in the alkaline solution spray liquid supply pipe and the superimposed gas-solid-liquid three-phase spray device The dust exhaust air pipe and compressed air pipe for carbon black dust spraying are equipped with ball valves that can be used to adjust the liquid supply volume, dust discharge volume and compressed air volume, and start the dust exhaust fan, liquid supply pump and air compressor. The dust, alkaline solution and pressurized air are respectively sent to the superimposed gas-solid-liquid three-phase spraying device for efficient pretreatment of high-temperature asphalt flue gas spraying to degrade sulfide and adsorb tar.

The superimposed gas-solid-liquid three-phase spraying device and the asphalt flue gas pretreatment system of the present invention are simple and reasonable, and its working principle is: the carbon black dust is sprayed as a solid matter that absorbs dusty tar in the high-temperature hot-pressed asphalt flue gas, The carbon black dust collection tank and the dust discharge pipe are combined with the intake pipe to connect the intake valve, the dust exhaust fan, the dust discharge one-way valve, the dust discharge duct and the dust discharge ball valve; the liquid spray is passed the inspection. To the concentration of sulfide, according to the molar ratio of acid-base balance and the capacity of the alkaline solution for degrading sulfide, the reclaimed water flowing in through the reclaimed water inlet pipe and water inlet valve is mixed in the liquid storage tank and then diluted. The liquid supply pipe connected to the tank, the liquid supply valve, the liquid supply pump, the liquid supply one-way valve and the alkaline solution spray liquid supply pipe are connected with the liquid supply ball valve; the air spray is compressed to 0.5 with an air compressor. After the pressure of MPa, through the storage of the air storage tank and the air pipe and air ball valve; through the adjustable valves configured in each pipe, a set of asphalt flue gas pretreatment system is formed in cooperation with the superimposed gas-solid-liquid three-phase spray device ; When the flue gas containing dust, tar, sulfide and mist concentration under high temperature and hot pressure flows into the flue gas collection pipe to connect to the stacked gas-solid-liquid three-phase spray device, adjust the molar ratio suitable for acid-base balance and gas Liquid ratio, adsorption dust tar gas-solid ratio, start the dust exhaust fan, liquid supply pump, air compressor and 0.5MPa compressed air, respectively send carbon black dust, alkaline solution and compressed air to the superimposed gas-solid-liquid After the high-temperature hot-pressed asphalt flue gas is sprayed and cooled to degrade the sulfide and adsorbed tar in the three-phase spray device, it flows into the next process for dedusting, coking and demisting treatment.

Description of drawings

Fig. 1 is the flow chart that sprinkler device of the present invention and asphalt flue gas pretreatment system implement;

Fig. 2 is the lower plane sectional view of the carbon black dust dust collection tank in Fig. 1;

Fig. 3 is the upper plane view of the carbon black dust dust collection tank among Fig. 2;

Fig. 4 is the carbon black dust dust collecting tank A-A sectional view among Fig. 2;

Fig. 5 is the sectional view of carbon black dust dust collection tank B-B among Fig. 2;

Fig. 6 is a detailed plan view of the stacked gas-solid-liquid three-phase spray device in Fig. 1;

Fig. 7 is a cross-sectional view of the superimposed gas-solid-liquid three-phase spray device in Fig. 6;

Marking description in the figure

In Figure 1:

1-superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system, 2-carbon black dust dust collection tank, 3-semi-cone metal screen, 4-carbon black dust, 5-dust exhaust damper, 5a-dust exhaust pipe, 6-intake damper, 6a-intake pipe, 6b-intake branch pipe, 7-dust exhaust fan, 7a-dust exhaust one-way valve, 7b-dust exhaust duct, 7c-dust exhaust ball valve, 8-Exhaust one-way valve, 9-Dust bag, 10-Dust return damper, 10a-Dust return pipe, 11-Cylinder cover, 12-Dust injection port, 13-Cylinder bracket, 14-Drain valve , 14a-drain pipe, 16-water inlet valve, 16a-water inlet pipe, 21-liquid storage tank, 22-alkaline solution pressure pipe, 23-hose connector, 24-drain valve, 25-supply Liquid valve, 26-liquid supply pump, 26a-liquid supply one-way valve, 26b-alkaline solution spray liquid supply pipe, 26c-liquid supply ball valve, 27-safety valve, 27a-liquid storage and exhaust pipe, 28-electronics Water level gauge, 31-air compressor, 32-air storage tank, 33-air compression pipe, 34-air ball valve, 41-flue gas collection pipe, 42-superimposed gas-solid-liquid three-phase spray device.

In Figure 2:

1-superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system, 2-carbon black dust dust collection tank, 3-semi-conical metal screen, 4-carbon black dust, 5a-dust exhaust pipe, 6a-intake pipe, 6b-intake branch pipe, 6c-fixing bracket, 10a-dust return pipe, 13-cylinder bracket, 14a-drainage pipe, 15-observation hole, 16a-reclaimed water inlet pipe.

In Figure 3:

1-superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system, 2-carbon black dust dust collection tank, 6a-intake pipe, 8-exhaust one-way valve, 9-dust bag, 10a-dust Return pipe, 11-cylinder cover plate, 12-dust injection port, 15-observation hole, 16a-reclaimed water inlet pipe.

In Figure 4:

1-superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system, 2-carbon black dust dust collection tank, 3-semi-conical metal screen, 4-carbon black dust, 5a-dust exhaust pipe, 6a-intake pipe, 6b-intake branch pipe, 6c-fixing bracket, 8-exhaust one-way valve, 9-dust bag, 10a-dust return pipe, 11-cylinder cover, 12-dust injection port, 13 -Cylinder support, 14a-drainage pipe, 15-observation hole, 16a-reclaimed water inlet pipe.

In Figure 5:

1-superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system, 2-carbon black dust dust collection tank, 3-semi-conical metal screen, 4-carbon black dust, 5a-dust exhaust pipe, 6a-intake pipe, 6b-intake branch pipe, 6c-fixing bracket, 8-exhaust one-way valve, 9-dust bag, 11-cylinder cover, 13-cylinder bracket, 14a-drainage pipe, 15-observation Hole, 16a-medium water inlet pipe.

In Figure 6:

1-superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system, 7b-dust exhaust duct, 7c-dust exhaust ball valve, 26b-alkaline solution spray liquid supply pipe, 26c-liquid supply ball valve, 33-air compression pipe, 34-air ball valve, 42-superimposed gas-solid-liquid three-phase spraying device.

In Figure 7:

1-superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system, 7b-dust exhaust duct, 7c-dust exhaust ball valve, 26b-alkaline solution spray liquid supply pipe, 26c-liquid supply ball valve, 33-air compression pipe, 34-air ball valve, 42-superimposed gas-solid-liquid three-phase spraying device.

Detailed ways

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

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, the superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system 1 are used for solid spraying The carbon black dust 4 of drench is dropped into carbon black dust dust collecting tank 2, dust discharge pipe 5a is set through carbon black dust collecting tank 2 and cooperates air intake pipe 6a and air intake branch pipe 6b through dust discharge blower fan 7; It is to put the alkaline solution into the liquid storage tank 21 and mix it with reclaimed water and then dilute it, then connect the liquid supply pipe, the liquid supply valve 25 and the liquid supply pump 26 through the liquid storage tank 21; the air compressor is used for gas spraying. 31 Compress the air to a pressure of 0.5MPa, pass through the storage of the air storage tank 32 and pressurize the air pipe 33, respectively pass through various regulating valves configured on the gas-solid-liquid pipeline, and cooperate with the superimposed gas-solid-liquid three-phase spray device 42 Combined into a set of asphalt flue gas pretreatment system; the carbon black dust dust collection tank 2 is composed of a cylindrical cylinder and a cone, and a ring and a cylinder cover 11 are arranged on the outer upper part of the cylindrical cylinder. The cover plate 11 is provided with an exhaust pipe, an exhaust one-way valve 8 and a dust bag 9, and the cylinder cover plate 11 is also provided with a dust injection port 12 and a cover plate for the dust injection port 12, which is used to put in solids for 50 The carbon black dust 4 of order and above particle size; The bottom of the cone is provided with a dust discharge pipe 5a to be connected with the air inlet pipe 6a, and the air inlet pipe 6a that runs through the cylindrical shell is connected with the air inlet valve 6, and the cylinder The inlet pipe 6a in the cylindrical body bypasses an inlet branch pipe 6b, and the diameter of the inlet branch pipe 6b is 1/3 of the diameter of the inlet pipe 6a; the dust discharge pipe 5a that runs through the bottom of the cone bypasses the drain The pipe 14a is connected, and the diameter of the dust discharge pipe 5a is the same as that of the drain pipe 14a. The valve 7a and the dust exhaust air pipe 7b are connected to each other; the cylinder support 13 for supporting the carbon black dust collection tank 2 of the cylindrical cylinder is arranged on three of the outer circle sides of the cylindrical cylinder at an equal angle, and the cylinder The height distance H between the bottom of the body support 13 and the center of the dust discharge pipe 5a is set to a size between 250-350mm.

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, the superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system 1 run through the cylindrical The distance M between the center of the air inlet pipe 6a in the cylinder and the center of the cylindrical cylinder is set to a size between 80 and 120mm, and the distance O between the horizontal center of the air inlet pipe 6a and the cover plate 11 of the cylindrical cylinder is between 120 and 150mm The size of the air intake pipe 6a and the bottom of the cone is provided with a fixed bracket 6c for the air intake pipe 6a; the dust discharge pipe 5a is provided with a semicircular opening flush with the bottom of the cone and then welded and fixed; the part of the dust discharge pipe with a semicircular opening On the upper part of 5a, there are multiple round holes with a diameter of more than 2mm on the slope and side of the cone, the distance between the diameters of the round holes is 4-5mm, and the height is greater than 200mm, and the angle of the cone is set to 60°. Cone metal screen 3, a steel plate without circular holes is set at the top of the semi-cone metal screen 3, and the intake branch pipe 6b bypassed by the intake pipe 6a is inserted into the top of the semi-cone metal screen 3, and the semi-cone The body metal screen 3 is placed on the top of the cone and the unopened dust discharge pipe 6a to be fixed by welding; the air intake branch pipe is inserted on the top of the semi-cone metal screen 3, and the purpose is to drive the air through the air intake branch pipe 6b. When the carbon black dust 4 flows through the dust discharge pipe 5a through the semi-cone metal screen 2, it can form a pointed downward cone, leaving the necessary air driving space, and using the air pressure to allow the carbon black dust 4 to fall naturally. Sink and flow into the dust discharge pipe 5a of the opening; the sides of the cylindrical cylinder are respectively provided with reclaimed water inlet pipes 16a for cleaning the cylinder to connect the reclaimed water inlet valve 16 for the inflow of reclaimed water, and the middle The water inlet pipe 16a is also bypassed in the dust exhaust air pipe 7b; the side of the cylindrical body is provided with a dust return pipe 10a connected to the dust return valve 10 and can be visually observed to drop into the carbon black dust 4 capacity and height, and with The observation hole 15 of transparent plexiglass, the width of the observation hole 15 is set to 120 mm, the height is set to a size between 500 and 700 mm, and the observation hole 15 is set at a position 22.5 ^° away from the center line; The dust return pipe 10a is connected with the dust return damper 10 and the dust exhaust duct 7b. Once the dust exhaust fan 7 stops running, the dust discharge check valve 7a will be automatically closed, and the dust return damper 10 will be opened. At this time, the dust discharge The carbon black dust 4 in the air duct 7b can flow into the carbon black dust dust collection tank 2 via the dust return pipe 10a and the dust return damper 10, and then be reused after being preserved.

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, the superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system 1 are made of glass fiber reinforced plastics The top of the liquid storage tank 21 is provided with a safety valve 27 and an electronic liquid level gauge 28 that can open the valve when the pressure is greater than or equal to 0.2MPa. The liquid storage and exhaust pipe 27a provided by the safety valve 27 is connected to the smoke collection pipe 41 ; The bottom of the liquid storage tank 21 is provided with a drain pipe connected to the drain valve 24, the liquid storage tank 21 is provided with an alkaline solution pressure inlet valve 16 connected to the water inlet pipe 22 and the reclaimed water inlet pipe 16a, and the external hose connector 23 and The liquid inlet valve and the alkaline solution pressure inlet pipe 22 are connected to each other, and the gas-liquid ratio suitable for spraying and degrading sulfide and the molar ratio capacity of the alkaline solution for balancing the acid gas are connected externally through the liquid inlet valve by an alkaline solution tanker The hose joint 23 and the alkaline solution pressing pipe 22 are put into the liquid storage tank 21 to mix with the reclaimed water flowing in through the reclaimed water inlet pipe 16a and the water inlet valve 16. The valve 25 and the liquid supply pump 26 are connected; the air compressor 31 is used to compress the air to a pressure of 0.5MPa, and the air storage tank 32 with a pressure of not less than or equal to 1.0MPa is arranged through the compressed air pipe 33 for storage, and the air storage tank 32 Both the air inlet and the exhaust port of the air ball valve 34 are set; the carbon black dust 4 is sprayed as a solid matter that absorbs the dusty tar in the high-temperature hot-pressed asphalt flue gas, and the carbon black dust dust collection tank 2 and the dust discharge pipe 5a Combined with the intake pipe 6a, connect the intake valve 6, the dust exhaust fan 7, the dust exhaust one-way valve 7a and the dust exhaust duct 7b, which can adjust the intake air volume; the liquid spray is based on the acid-base balance by detecting the concentration of sulfide. The molar ratio and capacity of the alkaline solution for degrading sulfides are mixed with reclaimed water in the liquid storage tank 21, and the liquid supply pipe connected to the liquid storage tank 21, the liquid supply valve 25, the liquid supply pump 26 and the liquid supply check valve 26a and the alkaline solution spray liquid supply pipe 26b are connected to each other with the liquid supply ball valve 26c.

According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, the superimposed gas-solid-liquid three-phase spray device and asphalt flue gas pretreatment system 1, superimposed gas-solid The liquid three-phase spray device 42 can be processed and manufactured with pipes of the same caliber as the flue gas collection pipe 51. Flanges should be provided at both ends of the pipes. Open three oval holes with equal angles and pipe diameters of DN32 to DN50, and insert three pipes with the same diameter between DN32 and DN50 at the position of 45 ^° angle for the alkaline solution spray supply pipe 26b , carbon black dust 4 spraying with the nozzle of dust exhaust air pipe 7b, the central extension line of three nozzles intersects with the center line of superimposed gas-solid-liquid three-phase spray device 42, superimposed gas-solid-liquid three-phase spray device 42 The length of the nozzle should be less than or equal to the size between 100mm, and it is fixed by welding; three alkaline solution spraying liquid supply pipes 26b with the same diameter between DN32 and DN50, and dust exhaust air pipes for carbon black dust 4 spraying On the 90 ⁰ elbow of 7b, open a round hole with a size between 15 and 20mm, and then insert the compressed air pipe 33 with a pipe diameter between DN10 and DN15, and insert the compressed air pipe 33 into the alkaline solution spray liquid supply pipe 26b , carbon black dust 4 spraying with the depth distance K of the dust exhaust air pipe 7b is the size between 50 ~ 100mm to be welded and fixed; in the alkaline solution spraying liquid supply of the superimposed gas-solid-liquid three-phase spraying device 42 Pipe 26b and carbon black dust 4 are sprayed with dust discharge air pipe 7b and compressed air pipe 33, are all provided with ball valves that can be used to adjust the liquid supply volume, dust discharge volume and compressed air volume size, start dust discharge fan 7 and supply The liquid pump 26 and the air compressor 31 respectively send the carbon black dust 4, the diluted alkaline solution and compressed air to the superimposed gas-solid-liquid three-phase spray device 42 to spray the high-temperature asphalt flue gas to cool down, degrade and vulcanize Efficient pretreatment of waste and adsorbed tar.

The superimposed gas-solid-liquid three-phase spraying device and the asphalt flue gas pretreatment system 1 of the present invention are simple and reasonable, and its working principle is: the carbon black dust 4 is used as the solid object spraying dusty tar in the high-temperature hot-pressed asphalt flue gas The carbon black dust dust collection tank 2 and the dust discharge pipe 5a are combined with the intake pipe 6a to connect the intake valve 6, the dust discharge fan 7, the dust discharge one-way valve 7a, the dust discharge duct 7b and the discharge valve, which can adjust the intake air volume. Dust ball valve 7c; Liquid spraying is by detecting the concentration of sulfide, according to the mol ratio of acid-base balance and the alkaline solution capacity of degrading sulfide and the reclaimed water that flows in through reclaimed water inlet pipe 16a and inlet valve 16 in storage Dilute after mixing in the liquid tank 21, the liquid supply pipe connected to the liquid storage tank 21 and the liquid supply valve 25, the liquid supply pump 26, the liquid supply check valve 26a and the alkaline solution spray liquid supply pipe 26b are then connected with the liquid supply The ball valves 26c are connected to each other; the gas spraying is to use the air compressor 31 to compress the air to a pressure of 0.5MPa, store and press the air pipe 33 and the air ball valve 34 through the storage of the air storage tank 32; the adjustable valves configured by each pipeline , cooperate with superimposed gas-solid-liquid three-phase spraying device 42 to form a set of asphalt flue gas pretreatment system; when the asphalt flue gas containing dust tar, sulfide and mist drops flows into the flue gas collection pipe 41 and When connecting the stacked gas-solid-liquid three-phase spray device 42, according to the asphalt flue gas dust tar and sulfide and droplet concentration, properly adjust the gas-liquid ratio of the spray and the gas-solid ratio of the adsorption dust tar multiplier, Using compressed air with a pressure of 0.5MPa, start the dust exhaust fan 7, the liquid supply pump 26 and the air compressor 31, and respectively send the carbon black dust 4, the diluted alkaline solution and compressed air to the superimposed gas-solid-liquid three The phase spraying device 42 performs spray cooling and high-efficiency pretreatment of degrading sulfides and adsorbed tar on the asphalt flue gas flowing through under high-temperature hot-pressing conditions, and then flows into the next process for dust removal, coke and fog removal.

Claims (2)

1. The superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system are characterized in that: carbon black dust is selected for solid spraying, and the carbon black dust is put into the carbon black dust dust collection tank, The dust exhaust pipe, the air intake pipe and the air intake branch pipe installed in the tank, the dust exhaust pipe is connected to the dust exhaust damper and the dust exhaust fan. Through the power of the dust exhaust fan, the carbon black dust flows into the dust exhaust pipe and the outdoor air from the air intake pipe flows into it. It is used to draw carbon black dust from the dust exhaust pipe, and the air in the intake branch pipe is used to drive the flow of carbon black dust and the synergy of gas-solid mixing; for liquid spraying, the alkaline solution is put into the liquid storage tank and the medium After the water is mixed, it is diluted, and the liquid supply pipe connected to the liquid storage tank is coordinated with the liquid supply valve and the liquid supply pump; for gas spraying, the air compressor is used to compress the air to a pressure above 0.5MPa, and the air is stored through the air storage tank. The storage of the tank and the deployment of the pressurized air pipe, and then through the various regulating valves configured on the gas-solid-liquid pipeline, cooperate with the superimposed gas-solid-liquid three-phase spray device to form a set of asphalt flue gas pretreatment system; The carbon black dust collection tank is composed of a cylindrical cylinder and a cone. At the bottom of the cone, there is a dust discharge pipe connected to the intake pipe, and the intake pipe running through the cylindrical cylinder is connected to the intake valve. An air intake branch pipe is bypassed on the air intake pipe in the cylindrical barrel, and the diameter of the air intake branch pipe is set to be 1/3 of the diameter of the air intake pipe; the dust discharge pipe running through the bottom of the cone is bypassed and connected to the drain pipe, The caliber of the dust discharge pipe is set to be the same as that of the drain pipe, the drain pipe is connected to the drain valve, and the dust discharge pipe is connected to the dust discharge damper, the dust discharge fan, the dust discharge one-way valve, and the dust discharge air pipe; The distance M between the center of the inlet pipe running through the cylindrical cylinder and the center of the cylindrical cylinder is set to a size between 80-120mm, and the distance O between the horizontal center of the inlet pipe and the cover plate of the cylindrical cylinder is 120-150mm The size between the intake pipe and the bottom of the cone is provided with a fixed bracket for the intake pipe; The dust discharge pipe is provided with a semicircular opening flush with the bottom of the cone and then welded and fixed. On the upper part of the dust discharge pipe with a semicircular opening, there are multiple round holes with a diameter of more than 2mm on the slope and side of the cone. The pitch is between 4 and 5mm, and the height is greater than 200mm. The semi-cone metal screen with a cone angle of 60° is set on the top of the semi-cone metal screen with a steel plate without round holes, which passes through the intake pipe. The bypass intake branch pipe is inserted on the top of the semi-cone metal screen, and the semi-cone metal screen is placed on the upper part of the cone and the unopened dust discharge pipe to fix it by welding; Insert the air intake branch pipe on the top of the semi-cone metal screen, the purpose of which is to drive the carbon black dust through the air intake branch pipe to flow through the dust discharge pipe through the semi-cone metal screen, forming a sharp point towards The lower cone can leave the necessary air driving space, and the carbon black dust can naturally sink and flow into the dust discharge pipe at the opening part by using the air pressure. 2. The superimposed gas-solid-liquid three-phase spraying device and asphalt flue gas pretreatment system according to claim 1, characterized in that: the superimposed gas-solid-liquid three-phase spraying device can have the same diameter as the flue gas collection pipe For the processing and manufacture of pipes, flanges shall be provided at both ends of the pipes, and three oval holes with equal angles and pipe diameters of DN32~DN50 shall be opened on the side of the pipe at a distance between flange height L of 150mm and 200mm. Insert three pipes with the same diameter between DN32 and DN50 at an angle of 45 ^° for the nozzles of the alkaline solution spraying liquid supply pipe and the carbon black dust spraying dust discharge pipe, and the center of the three nozzles The extension line intersects the center line of the superimposed gas-solid-liquid three-phase spray device, and the nozzle length of the device should be less than or equal to 100mm, and it should be fixed by welding; On the three DN32-DN50 alkaline solution spray supply pipes of the same diameter and the 90 ^° bend of the carbon black dust spray dust exhaust duct, open round holes with a size of 15-20mm, and then separate them. Insert a compressed air pipe with a pipe diameter between DN10 and DN15, insert the compressed air pipe into the alkaline solution spray liquid supply pipe, and the dust exhaust air pipe for carbon black dust spray. The depth distance K is between 50 and 100mm. Be welded and fixed; On the alkaline solution spray liquid supply pipe of the superimposed gas-solid-liquid three-phase spray device, the dust exhaust air pipe and compressed air pipe for carbon black dust spray, there are devices that can be used to adjust the liquid supply volume and dust discharge volume. And the ball valve with the size of the compressed air, start the dust exhaust fan, the liquid supply pump and the air compressor, and respectively send the dust, alkaline solution and compressed air to the superimposed gas-solid-liquid three-phase spray device to suppress the high-temperature asphalt fume High-efficiency pretreatment for degrading sulfide and adsorbing tar by air spray cooling.

Images