CN219441255U - Catalytic reduction purifying equipment for flue gas at outlet of power plant - Google Patents

Abstract

The utility model discloses a catalytic reduction purification device for flue gas at an outlet of a power plant, which comprises a tank body and is characterized in that a porous plate, a partition plate and a transverse plate are fixedly connected to the inner wall of the tank body in sequence from top to bottom, a plurality of guide pipes penetrating through the partition plate are uniformly distributed on the partition plate, a stand column is fixedly connected to the upper end of the porous plate, a turbulence mechanism is arranged on the stand column, a vertical pipe is connected between a chamber above the porous plate and a chamber below the transverse plate, a blow-down valve for exhausting an adsorbent in the tank body and a driving assembly for circulating flue gas are arranged on one side of the tank body, and an air inlet pipe and a return pipe are arranged on the other side of the tank body.

Description

Catalytic reduction purifying equipment for flue gas at outlet of power plant

Technical Field

The utility model relates to the technical field of flue gas treatment, in particular to catalytic reduction purification equipment for flue gas at an outlet of a power plant.

Background

The main way of reducing the emission of sulfur dioxide in the thermal power plant is as follows: coal washing and selecting, clean coal combustion technology, low sulfur coal combustion and flue gas desulfurization, wherein the coal washing and selecting can only remove part of inorganic sulfur in coal at present, the clean coal combustion technology is a new technology developed in recent years internationally, but the single machine capacity is not large, the technical investment is large, the technical requirement is high, the large-area popularization and use in a short time are difficult, the flue gas desulfurization technology is mature, and the flue gas desulfurization technology is a key and effective means for controlling the sulfur dioxide emission of a thermal power plant, and mainly comprises 4 types of flue gas desulfurization technologies: the wet limestone/gypsum absorption method, dry spray drying purification process, humidifying water activation method after calcium spraying in the furnace and circulating fluidized bed flue gas purification process are based on the circulating fluidized bed principle, the contact time of the absorbent and flue gas is prolonged through multiple recirculation of the absorbent, the circulating fluidized bed flue gas purification process fully contacts and mixes Ca (OH) 2 powder added into the desulfurizing tower with SO2 in the flue gas and other components in the flue gas such as SO3, HCl, HF and the like, atomized water sprayed at the inlet of the desulfurizing tower reduces the flue gas temperature on one hand, ensures optimal reaction conditions, forms liquid phase on the other hand on the surface of Ca (OH) 2 particles, ca (OH) 2 powder, flue gas and sprayed water in the desulfurizing tower are fully mixed in a suspension state, and the excessive Ca (OH) 2 powder is recycled in the desulfurizing tower for multiple times under the condition that the proper Ca/S ratio is 1.3-1.6, SO that the SO2, SO3 and other acidic gases in the flue gas can be fully absorbed, high efficiency and the desulfurizing agent are fully utilized, the desulfurizing tower is used as a whole set of the circulating fluidized bed, the whole set of the circulating tower can be directly used as a circulating tower or a key component, the whole set of the desulfurizing tower can be fully distributed with ash and the ash, the whole set in order to fully flow field, and the whole set up in the desulfurizing tower can be fully discharged in order to form a full flow field, and the flue gas can be fully distributed with the flue gas, and the ash can flow well be discharged in the desulfurizing tower, and the ash can be fully flows can flow through the flue ash can be discharged through the desulfurizing tower, and the ash can be discharged through the flue ash, and the flue gas.

At present, because the desulfurizing agent, fly ash particles and flue gas are required to be fully mixed in the desulfurizing tower, the discharged flue gas not only contains partial insufficiently reacted sulfur dioxide gas under the condition that the flue gas continuously flows, but also can carry more fly ash particles and partial desulfurizing agent, and the direct discharge of the flue gas still causes pollution to the air and influences the air environment around a power plant.

Disclosure of Invention

The utility model aims to solve the problems that the flue gas after desulfurization contains insufficient sulfur dioxide gas and fly ash particles, and the direct discharge of the flue gas can pollute the air and influence the air environment around a power plant.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a power plant's export flue gas catalytic reduction clarification plant, includes a jar body, its characterized in that, the inner wall of jar body is from last to fixedly connected with perforated plate, baffle and diaphragm down in proper order, the equipartition is equipped with a plurality of pipes that run through the baffle on the baffle, the upper end fixedly connected with stand of perforated plate, be equipped with vortex mechanism on the stand, be connected with the riser between the cavity of perforated plate top and the cavity of diaphragm below, one side of jar body is equipped with and is used for carrying out endless drive assembly with the flue gas with the internal adsorbent exhaust blowoff valve of jar, the opposite side of jar body is equipped with intake pipe and back flow.

Compared with the prior art, the utility model provides the catalytic reduction purification equipment for the flue gas at the outlet of the power plant, which has the following beneficial effects:

1. this power plant's export flue gas catalytic reduction clarification plant, through the intake pipe that is equipped with, the flue gas after the desulfurizing tower desulfurization, when entering into the jar body from the intake pipe, the flue gas purification adsorbent in the jar body adsorbs partial particulate matter flue gas, the flue gas come-up is back to enter into the top of baffle through the pipe, the flue gas passes in the perforated plate enters into the kuppe this moment, the flue gas passes the gap between kuppe and the retaining ring, the back flow is to the jar internally and be in the below of diaphragm through the back flow under the suction effect of air-blower, at this moment, the flue gas of jar internal diaphragm below is in the riser backward flow to the kuppe after the flue gas purification adsorbent is handled again, because the air-blower only draws the internal gas of jar and circulates, consequently, when desulfurizing tower exhaust gas enters into the jar body, be in the flue gas of circulation and be pressed out in the blast pipe, and keep unanimous with the exhaust velocity of desulfurizing tower, thereby particulate matter and sulfur dioxide in the efficient cyclic treatment flue gas.

2. This power plant's export flue gas catalytic reduction clarification plant, through the booster pump that is equipped with, when circulating flue gas flows, start the internal flue gas purification adsorbent of booster pump extraction jar and arrange in the ring pipe, the intraductal flue gas purification adsorbent of ring spouts from atomizer and fully contacts with the flue gas, and under the effect of kuppe and retaining ring, flue gas purification adsorbent gathers on the perforated plate, and it is internal to flow back to the jar through the perforated plate, the starter motor drives the mount rotation simultaneously, it makes the bevel gear revolve around the ring gear to drive the cross axle when the mount is rotatory, and drive the cross axle in the bevel gear revolution process and make the flabellum rotatory, the internal gas of stirring jar that can be abundant when the flabellum is rotatory is favorable to flue gas purification adsorbent to handling sulfur dioxide gas, and can make vaporific flue gas purification adsorbent adhere at the inner wall of jar body and flow down.

Further, the vortex mechanism includes the mount, one side center department of mount is rotated through ball bearing and is connected on the lateral wall of stand, the left and right sides of mount is all rotated through antifriction bearing and is connected with the cross axle, two the one end that the cross axle is opposite to each other is all fixedly connected with flabellum.

Further, the side wall of the upright post is fixedly connected with a gear ring, the gear ring is meshed with two bevel gears which are symmetrically arranged, and the two bevel gears are respectively and coaxially fixedly connected with one ends of the two transverse shafts.

Further, the upper end fixedly connected with drive mount pivoted motor of jar body, the output of motor runs through the lateral wall of jar body and with the upper end center department fixed connection of mount.

Further, one side fixedly connected with booster pump of jar body, the input of booster pump is connected with the feed liquor pipe, and the lateral wall fixed connection of feed liquor pipe and jar body, the output of booster pump is connected with the drain pipe, and the drain pipe is with the lateral wall fixed connection of jar body.

Further, one end of the liquid outlet pipe extends into the tank body and is fixedly connected with an annular pipe, and a plurality of evenly distributed atomizing nozzles are fixedly connected to the pipe wall of the annular pipe.

Further, the upper end fixedly connected with retaining ring of perforated plate, be equipped with the kuppe of tubaeform structure in the retaining ring, the upper end and the inner wall fixed connection of jar body of kuppe, the lateral wall of kuppe passes through mounting hole and the upper end fixed connection of riser.

Further, one end of the air inlet pipe and one end of the return pipe extend into the tank body and are fixedly connected with an aeration head.

Further, the drive assembly is the air-blower, the end of giving vent to anger of air-blower is fixed connection with the upper end of back flow, the inlet end of air-blower is equipped with the connecting pipe, connecting pipe and the lateral wall fixed connection of jar body.

Further, the front side of the tank body is fixedly connected with an exhaust pipe for exhausting the purified flue gas.

The device does not relate to the part which is the same as or can be realized by adopting the prior art, and the device can be used for efficiently and circularly treating the flue gas of the power plant, sufficiently purifying fly ash particles and part of desulfurizing agent, and simultaneously, can be used for treating sulfur dioxide gas in the flue gas again, so that the influence of the fly ash particles and part of desulfurizing agent on the surrounding environment of the power plant is reduced.

Drawings

FIG. 1 is a schematic diagram of a catalytic reduction purification device for flue gas at an outlet of a power plant;

FIG. 2 is a cross-sectional view of FIG. 1 of a power plant outlet flue gas catalytic reduction purification apparatus according to the present utility model;

FIG. 3 is a schematic structural view of the turbulence mechanism in FIG. 2 of the catalytic reduction purification device for flue gas at the outlet of a power plant according to the present utility model;

fig. 4 is a cross-sectional view of a perforated plate, a retainer ring and a guide cover in a catalytic reduction purification device for flue gas at an outlet of a power plant.

In the figure: 1. a tank body; 2. an air inlet pipe; 3. a return pipe; 4. a blower; 5. an exhaust pipe; 6. a motor; 7. a booster pump; 8. an atomizing nozzle; 9. an annular tube; 10. a fixing frame; 11. a riser; 12. a porous plate; 13. a partition plate; 14. a cross plate; 15. an aeration head; 16. bevel gears; 17. a fan blade; 18. a column; 19. a gear ring; 20. a retainer ring; 21. a guide cover; 22. a catheter.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-4, a catalytic reduction purification device for flue gas at the outlet of a power plant comprises a tank body 1, wherein a porous plate 12, a baffle 13 and a transverse plate 14 are fixedly connected to the inner wall of the tank body 1 from top to bottom in sequence, the porous plate 12, the baffle 13 and the transverse plate 14 divide the interior of the tank body 1 into a plurality of chambers from top to bottom, the chambers are used for storing different flue gas purification adsorbents for treating sulfur dioxide gas, flying dust particles and desulfurizing agents, the technology is widely used in life, and the technology is known to those skilled in the art, so that excessive details are not needed, the side wall of the baffle 13 is fixedly connected with a plurality of evenly distributed guide pipes 22 through holes, the upper end of the porous plate 12 is fixedly connected with a stand 18, a turbulent flow mechanism is arranged on the stand 18, the turbulent flow mechanism comprises a fixed frame 10, the center of one side of the fixed frame 10 is rotationally connected to the side wall of the stand 18 through a ball bearing, the left side and the right side of the fixed frame 10 are respectively and rotatably connected with a transverse shaft through rolling bearings, one ends of the two transverse shafts, which are opposite, are respectively and fixedly connected with fan blades 17, the side wall of a stand column 18 is fixedly connected with a gear ring 19, the gear ring 19 is meshed with two bevel gears 16 which are symmetrically arranged, the two bevel gears 16 are respectively and coaxially fixedly connected with one ends of the two transverse shafts, the upper end of the tank body 1 is fixedly connected with a motor 6, the output end of the motor 6 penetrates through the side wall of the tank body 1 and is fixedly connected with the center of the upper end of the fixed frame 10, the upper end of a porous plate 12 is fixedly connected with a retainer ring 20, a guide cover 21 with a horn-shaped structure is arranged in the retainer ring 20, the upper end of the guide cover 21 is fixedly connected with the inner wall of the tank body 1, the porous plate 12, the partition plate 13 and the side wall of the transverse plate 14 are respectively and fixedly connected with a stand pipe 11 through round holes, the side wall of the air guide sleeve 21 is fixedly connected with the upper end of the vertical pipe 11 through a mounting hole;

one side fixedly connected with multiple blow off valves of jar body 1, multiple blow off valves are used for changing the flue gas purification adsorbent in the multiple chambers, exhaust the flue gas purification adsorbent after using earlier, then use filling equipment to add new flue gas purification adsorbent from the blow off valve, the opposite side fixedly connected with intake pipe 2 of jar body 1 and back flow 3, the one end of intake pipe 2 and back flow 3 all extends to jar body 1 in and fixedly connected with aeration head 15, the fixed connection of one side of jar body 1 has air-blower 4, the end of giving vent to anger of air-blower 4 and the upper end fixed connection of back flow 3, the inlet end of air-blower 4 passes through connecting pipe and the lateral wall fixed connection of jar body 1, one side fixedly connected with booster pump 7 of jar body 1, the input of booster pump 7 passes through the lateral wall fixed connection of intake pipe and jar body 1, the output of booster pump 7 passes through the lateral wall fixed connection of liquid pipe and jar body 1, the one end of liquid pipe extends to jar body 1 in and fixedly connected with blast pipe 9, fixedly connected with a plurality of evenly distributed shower nozzles 8 on the pipe wall of annular pipe 9, the front side fixedly connected with of jar body 1 has 5, the one end of blast pipe 5 of 5 is located the perforated plate 12 top of the perforated plate.

In the utility model, when the desulfurization tower is used, the air inlet pipe 2 is connected with an air exhaust pipe orifice (not shown in the figure), when flue gas desulfurized by the desulfurization tower enters the tank body 1 through the air inlet pipe 2, part of particulate matters flue gas is adsorbed by the flue gas purifying adsorbent in the tank body 1, the flue gas floats upwards and enters the upper part of the partition plate 13 through the guide pipe 11, at the moment, the flue gas enters the guide cover 11 through the porous plate 12, the flue gas passes through a gap between the guide cover 11 and the retainer ring 20, and flows back to the tank body 1 through the return pipe 3 under the suction effect of the blower 4 and is positioned below the transverse plate 14, at the moment, the flue gas below the transverse plate 14 in the tank body 1 flows back to the guide cover 21 through the vertical pipe 11 after being treated by the flue gas purifying adsorbent again, and as the blower 4 only extracts the gas in the tank body 1 for circulation, when the gas exhausted by the desulfurization tower enters the tank body 1, the smoke in the circulating flow is extruded from the exhaust pipe 5 and keeps the same with the exhaust speed of the desulfurizing tower, so that the particles and sulfur dioxide in the smoke can be effectively treated in a circulating way, when the circulating smoke flows, the booster pump 7 is started to pump the smoke purifying adsorbent in the tank body 1 and discharge the smoke purifying adsorbent into the annular pipe 9, the smoke purifying adsorbent in the annular pipe 9 is sprayed out from the atomizing nozzle 8 to be fully contacted with the smoke, under the action of the air guide cover 21 and the check ring 20, the smoke purifying adsorbent is collected on the porous plate 12 and flows back into the tank body 1 through the porous plate 12, the motor 6 is started to drive the fixing frame 10 to rotate, the bevel gear 16 is driven to revolve around the gear ring 19 when the fixing frame 10 rotates, the bevel gear 16 is driven to drive the bevel gear 17 to rotate in the revolution process of the bevel gear, the gas in the tank body 1 can be fully stirred when the fan blade 17 rotates, the flue gas purifying adsorbent is favorable for treating sulfur dioxide gas, and can adhere to the inner wall of the tank body 1 and flow down.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (10)

1. The utility model provides a power plant's export flue gas catalytic reduction clarification plant, includes a jar body, its characterized in that, the inner wall of jar body is from last to fixedly connected with perforated plate, baffle and diaphragm down in proper order, the equipartition is equipped with a plurality of pipes that run through the baffle on the baffle, the upper end fixedly connected with stand of perforated plate, be equipped with vortex mechanism on the stand, be connected with the riser between the cavity of perforated plate top and the cavity of diaphragm below, one side of jar body is equipped with and is used for carrying out endless drive assembly with the flue gas with the internal adsorbent exhaust blowoff valve of jar, the opposite side of jar body is equipped with intake pipe and back flow.

2. The catalytic reduction purification device for flue gas at the outlet of a power plant according to claim 1, wherein the turbulence mechanism comprises a fixing frame, the center of one side of the fixing frame is rotationally connected to the side wall of the upright post through a ball bearing, the left side and the right side of the fixing frame are rotationally connected with cross shafts through rolling bearings, and the opposite ends of the two cross shafts are fixedly connected with fan blades.

3. The power plant outlet flue gas catalytic reduction purification device according to claim 2, wherein a gear ring is fixedly connected to the side wall of the upright post, two bevel gears which are symmetrically arranged are meshed with the gear ring, and the two bevel gears are respectively and coaxially fixedly connected with one ends of the two transverse shafts.

4. The catalytic reduction purification device for flue gas at the outlet of a power plant according to claim 3, wherein the upper end of the tank body is fixedly connected with a motor for driving the fixing frame to rotate, and the output end of the motor penetrates through the side wall of the tank body and is fixedly connected with the center of the upper end of the fixing frame.

5. The catalytic reduction purification device for flue gas at the outlet of a power plant according to claim 1, wherein a booster pump is fixedly connected to one side of the tank body, an input end of the booster pump is connected with a liquid inlet pipe, the liquid inlet pipe is fixedly connected with the side wall of the tank body, an output end of the booster pump is connected with a liquid outlet pipe, and the liquid outlet pipe is fixedly connected with the side wall of the tank body.

6. The catalytic reduction purification device for flue gas at an outlet of a power plant according to claim 5, wherein one end of the liquid outlet pipe extends into the tank body and is fixedly connected with an annular pipe, and a plurality of evenly distributed atomizing nozzles are fixedly connected to the pipe wall of the annular pipe.

7. The catalytic reduction purification device for flue gas at the outlet of a power plant according to claim 1, wherein a retainer ring is fixedly connected to the upper end of the porous plate, a guide cover with a horn-shaped structure is arranged in the retainer ring, the upper end of the guide cover is fixedly connected with the inner wall of the tank body, and the side wall of the guide cover is fixedly connected with the upper end of the vertical pipe through a mounting hole.

8. The catalytic reduction purification apparatus for flue gas at an outlet of a power plant according to claim 7, wherein one end of the inlet pipe and one end of the return pipe extend into the tank body and are fixedly connected with the aeration head.

9. The catalytic reduction purification device for flue gas at an outlet of a power plant according to claim 7, wherein the driving assembly is a blower, an air outlet end of the blower is fixedly connected with an upper end of the return pipe, an air inlet end of the blower is provided with a connecting pipe, and the connecting pipe is fixedly connected with a side wall of the tank body.

10. A plant outlet flue gas catalytic reduction purification apparatus according to any one of claims 1 to 9, wherein an exhaust pipe for exhausting the purified flue gas is fixedly connected to the front side of the tank.