Tail gas recovery equipment after light calcium carbonate processing

Abstract

The utility model relates to the technical field of calcium carbonate processing tail gas recovery, and discloses a tail gas recovery device after light calcium carbonate processing, which comprises a cylinder body, the top end of the cylinder body is fixedly connected with a gas inlet, the top end in the cylinder body is provided with a heat recovery mechanism, and the middle part in the cylinder body is provided with an atomization dust falling mechanism. A cavity is formed in the water tank, a filter mechanism is arranged on the lower portion of the interior of the cylinder body, and a recovery pipe is arranged on the lower portion of the right side wall of the cylinder body, the heat recovery mechanism is arranged, gas enters the interior of the cylinder body through the gas inlet and passes through the cavity in the water tank, and water in the water tank can be heated; and through cooperation of the first partition plate, the second partition plate, the third partition plate and the through holes, the retention time of gas in the cavity can be delayed, heat can be fully utilized, water in the water tank is heated, heat loss and waste are avoided, practicability is improved, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas recovery after calcium carbonate processing, in particular to tail gas recovery equipment after light calcium carbonate processing. Background Art

[0002] The production method of light calcium carbonate is generally to put limestone (calcium carbonate) into a lime kiln and burn it into quicklime (calcium oxide), then use water to turn the quicklime (calcium oxide) into slaked lime (calcium hydroxide), and then mix slaked lime slurry. After removing slag and impurities, carbon dioxide gas is introduced to carbonize and reduce the slaked lime (calcium hydroxide) into light calcium carbonate, and the product is obtained after drying. The carbonization reaction of slaked lime (calcium hydroxide) is usually carried out in a large closed container. In order to speed up the reaction and increase the output, more carbon dioxide gas is continuously introduced to carbonize and reduce the slaked lime (calcium hydroxide) slurry. The excess carbonized tail gas is discharged from the exhaust port on the upper part of the closed container. During the carbonization reaction, the strong water vapor formed in the exothermic process will be discharged together with many light calcium carbonate microparticles and part of the heat during the discharge process.

[0003] The existing referenceable Chinese utility model patent has a publication number of CN203899367U, which discloses a light calcium carbonate carbonization exhaust dust removal device. The utility model is a light calcium carbonate carbonization exhaust dust removal device, which adopts a horizontal water spray ring and a conical water spray ring for double-layer water spraying, so that the sprayed water mist covers the entire dust reduction cylinder, completely combines with the light calcium acid microparticles in the carbonized exhaust gas, falls to the bottom of the dust reduction cylinder, and is discharged from the dust exhaust port. The carbonized exhaust gas after dust reduction is discharged from the top exhaust port of the dust reduction cylinder, thereby achieving the function of eliminating dust and protecting the environment.

[0004] Due to the carbonization reaction, strong water vapor formed in the exothermic process will be discharged together with many light calcium carbonate particles and part of the heat during the discharge process. When the above-mentioned equipment is in use, it is not convenient to recycle the heat, which leads to heat loss and waste. In addition, when spraying water, the gas it transports is not convenient to fully contact with the sprayed water mist, which leads to part of the gas being directly discharged without contacting the water mist and polluting the environment. Therefore, the technicians in this field provide a tail gas recovery equipment after light calcium carbonate processing to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an exhaust gas recovery device after light calcium carbonate processing, which has the advantages of heat recovery and sufficient spraying, and solves the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust gas recovery device after light calcium carbonate processing, comprising a cylinder, the top of the cylinder is fixedly connected to an air inlet, the top of the cylinder is provided with a heat recovery mechanism, the middle of the cylinder is provided with an atomization dust reduction mechanism, the bottom of the cylinder is provided with a filtering mechanism, and the bottom of the right side wall of the cylinder is provided with a recovery pipe;

[0009] The heat recovery mechanism includes: a water tank is fixedly connected to the inner top of the cylinder, a cavity is arranged in the middle of the water tank, a water inlet pipe and a water outlet pipe are respectively arranged on the left side of the water tank, the water inlet pipe and the water outlet pipe both extend to the outside of the cylinder, and a first partition, a second partition and a third partition are equidistantly arranged inside the cavity, and through holes are arranged on the first partition, the second partition and the third partition.

[0010] As a preferred technical solution of the present utility model, the through hole on the first partition is located on the left side, the through hole on the second partition is located on the right side, and the through hole on the third partition is located in the middle.

[0011] As the preferred technical solution of the utility model, the atomizing dust reduction mechanism includes: a circular spray plate is fixedly connected to the middle part of the interior of the cylinder, a high-pressure water pipe is arranged on the right side of the circular spray plate, a group of atomizing nozzles are fixedly arranged on the inner surface of the circular spray plate, a circular plate is arranged inside the cylinder and below the circular spray plate, the circular plate is fixedly arranged inside the cylinder through a group of pillars, a motor is fixedly installed on the top of the circular plate, a rotating column is fixedly connected to the output end of the motor, and a group of dispersion rods are fixedly arranged on the outer surface of the rotating column.

[0012] As a preferred technical solution of the utility model, the high-pressure water pipe extends to the outside of the cylinder and is connected to the water outlet end of an external water pump.

[0013] As the preferred technical solution of the utility model, the filtering mechanism includes: a base is provided at the bottom end of the cylinder, a circular ring plate is fixedly connected to the outer side of the top end of the base, a fixing column is fixedly connected to the middle of the top end of the base, and a filter plate is fixedly connected to the top end of the fixing column.

[0014] As a preferred technical solution of the utility model, the annular plate is threadedly connected to the inner surface of the cylinder, and the filter plate is adapted to the inner size of the cylinder.

[0015] Compared with the prior art, the utility model provides a tail gas recovery device after light calcium carbonate processing, which has the following beneficial effects:

[0016] 1. The utility model sets a heat recovery mechanism. The gas enters the interior of the cylinder through the air inlet and passes through the cavity in the water tank, so the water inside the water tank can be heated. In combination with the use of the first partition, the second partition, the third partition and the through hole, the residence time of the gas inside the cavity can be delayed, which is convenient for fully utilizing the heat and heating the water inside the water tank to avoid heat loss and waste, thereby improving practicality and achieving good use effect.

[0017] 2. The utility model is provided with an atomizing dust reduction mechanism and a filtering mechanism. When in use, the conveyed gas and the sprayed water mist can be fully stirred and contacted through the coordinated use of the annular spray plate, the high-pressure water pipe, the atomizing nozzle, the circular plate and the dispersion rod, so that the dust in the gas can be better atomized and condensed, and the dust in the gas can be effectively removed, which is convenient for better gas recovery. In addition, the condensed dust particles can be filtered in combination with the use of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure inside the cylinder of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the connection between the motor and the rotating column of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the connection between the partition and the through hole of the utility model.

[0022] Wherein: 1. Cylinder; 2. Air inlet; 3. Heat recovery mechanism; 301. Water tank; 302. Cavity; 303. Water inlet pipe; 304. Water outlet pipe; 305. First partition; 306. Second partition; 307. Third partition; 308. Through hole; 4. Atomization dust reduction mechanism; 401. Circular spray plate; 402. High-pressure water pipe; 403. Atomization nozzle; 404. Circular plate; 405. Support; 406. Motor; 407. Rotating column; 408. Dispersion rod; 5. Filter mechanism; 501. Base; 502. Circular plate; 503. Fixed column; 504. Filter plate; 6. Recovery pipe. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-4 , an exhaust gas recovery device after light calcium carbonate processing, comprising a cylinder 1, an air inlet 2 is fixedly connected to the top of the cylinder 1, a heat recovery mechanism 3 is arranged at the top of the cylinder 1, an atomization dust reduction mechanism 4 is arranged in the middle of the cylinder 1, a filtering mechanism 5 is arranged at the bottom of the cylinder 1, and a recovery pipe 6 is arranged at the bottom of the right side wall of the cylinder 1;

[0027] The heat recovery mechanism 3 includes: a water tank 301 is fixedly connected to the inner top of the cylinder 1, a cavity 302 is arranged in the middle of the water tank 301, an inlet pipe 303 and an outlet pipe 304 are respectively arranged on the left side of the water tank 301, and the inlet pipe 303 and the outlet pipe 304 both extend to the outside of the cylinder 1, and the first partition 305, the second partition 306 and the third partition 307 are equidistantly arranged in the interior of the cavity 302, and the first partition 305, the second partition 306 and the third partition 307 are all provided with through holes 308; the through holes 308 on the first partition 305 are located on the left, the through holes 308 on the second partition 306 are located on the right, and the through holes 308 on the third partition 307 are located in the middle.

[0028] Furthermore, the gas enters the interior of the cylinder 1 through the air inlet 2 and passes through the cavity 302 in the water tank 301. During transportation, the gas carrying heat can heat the water inside the water tank 301. The setting of the first baffle 305, the second baffle 306, the third baffle 307 and the through hole 308 can delay the residence time of the gas inside the cavity 302, making it easy to fully utilize the heat and heat the water inside the water tank 301 to avoid heat loss and waste, thereby improving practicality and achieving good use effect.

[0029] The atomizing dust reduction mechanism 4 includes: a circular spray plate 401 is fixedly connected to the middle part of the inner part of the cylinder 1, a high-pressure water pipe 402 is arranged on the right side of the circular spray plate 401, a group of atomizing nozzles 403 are fixedly arranged on the inner surface of the circular spray plate 401, a circular plate 404 is arranged inside the cylinder 1 and below the circular spray plate 401, the circular plate 404 is fixedly arranged inside the cylinder 1 through a group of pillars 405, a motor 406 is fixedly installed on the top of the circular plate 404, a rotating column 407 is fixedly connected to the output end of the motor 406, and a group of dispersion rods 408 are fixedly arranged on the outer surface of the rotating column 407; the high-pressure water pipe 402 extends to the outside of the cylinder 1 and is connected to the water outlet end of the external water pump.

[0030] Furthermore, an external water pump supplies water to the high-pressure water pipe 402, and delivers water to the annular spray plate 401 to be sprayed out through a group of atomizing nozzles 403. At the same time, the motor 406 is started to drive the rotating column 407 to rotate, and a group of dispersion rods 408 rotate accordingly. The delivered gas is fully stirred and contacted with the sprayed water mist, which can better atomize and condense the dust in the gas, effectively remove the dust in the gas, and facilitate better recovery of the gas.

[0031] The filtering mechanism 5 includes: a base 501 is provided at the bottom end of the cylinder 1, a circular plate 502 is fixedly connected to the outer side of the top end of the base 501, a fixing column 503 is fixedly connected to the middle of the top end of the base 501, and a filter plate 504 is fixedly connected to the top end of the fixing column 503; the circular plate 502 is threadedly connected to the inner surface of the cylinder 1, and the filter plate 504 is adapted to the internal size of the cylinder 1.

[0032] Furthermore, the filter plate 504 is used to filter the condensed dust particles. When the filter plate 504 needs to be cleaned, the base 501 is manually rotated to separate the annular plate 502 from the inner rotation of the cylinder 1, and the filter plate 504 can be taken out for cleaning.

[0033] Working principle: When in use, first add water to the water tank 301 through the water inlet pipe 303, the gas enters the interior of the cylinder 1 through the air inlet 2, and passes through the cavity 302 in the water tank 301. During transportation, the gas with heat can heat the water inside the water tank 301. The first baffle 305, the second baffle 306, the third baffle 307 and the through hole 308 are arranged to delay the residence time of the gas inside the cavity 302, so as to make full use of the heat and heat the water inside the water tank 301 to avoid heat loss and waste. At the same time, the external water pump transports water to the high-pressure water pipe 402 and transports it to the annular spray nozzle. The inside of the plate 401 is sprayed out through a group of atomizing nozzles 403, and at the same time, the motor 406 is started to drive the rotating column 407 to rotate, and a group of dispersion rods 408 rotate accordingly. The transported gas is fully stirred and contacted with the sprayed water mist, which can make the dust in the gas better atomized and condensed, effectively remove the dust in the gas, and facilitate better recovery of the gas. The filter plate 504 is set to filter the condensed dust particles, and the treated gas is discharged through the recovery pipe 6. When the filter plate 504 needs to be cleaned, the base 501 is manually rotated to separate the annular plate 502 from the internal rotation of the cylinder 1, and the filter plate 504 can be taken out for cleaning.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tail gas recovery device after light calcium carbonate processing, comprising a cylinder (1), characterized in that: The top of the cylinder (1) is fixedly connected with an air inlet (2), the top of the interior of the cylinder (1) is provided with a heat recovery mechanism (3), the middle of the interior of the cylinder (1) is provided with an atomization dust reduction mechanism (4), a filtering mechanism (5) is provided below the inner wall of the cylinder (1), and a recovery pipe (6) is provided below the right side wall of the cylinder (1); The heat recovery mechanism (3) comprises: a water tank (301) is fixedly connected to the top of the cylinder (1), a cavity (302) is arranged in the middle of the water tank (301), a water inlet pipe (303) and a water outlet pipe (304) are arranged on the left side of the water tank (301), the water inlet pipe (303) and the water outlet pipe (304) both extend to the outside of the cylinder (1), and a first partition (305), a second partition (306) and a third partition (307) are equidistantly arranged inside the cavity (302), and through holes (308) are arranged on the first partition (305), the second partition (306) and the third partition (307).

2. The tail gas recovery equipment after processing of light calcium carbonate according to claim 1, characterized in that: The through hole (308) on the first partition (305) is located on the left side, the through hole (308) on the second partition (306) is located on the right side, and the through hole (308) on the third partition (307) is located in the middle.

3. The tail gas recovery equipment after processing of light calcium carbonate according to claim 1, characterized in that: The atomizing dust reduction mechanism (4) comprises: a circular spray plate (401) is fixedly connected to the middle part of the inner part of the cylinder (1), a high-pressure water pipe (402) is arranged on the right side of the circular spray plate (401), a group of atomizing nozzles (403) are fixedly arranged on the inner surface of the circular spray plate (401), a circular plate (404) is arranged inside the cylinder (1) and below the circular spray plate (401), the circular plate (404) is fixedly arranged inside the cylinder (1) through a group of pillars (405), a motor (406) is fixedly installed on the top end of the circular plate (404), a rotating column (407) is fixedly connected to the output end of the motor (406), and a group of dispersion rods (408) are fixedly arranged on the outer surface of the rotating column (407).

4. The tail gas recovery equipment after processing of light calcium carbonate according to claim 3 is characterized in that: The high-pressure water pipe (402) extends to the outside of the cylinder (1) and is connected to the water outlet of an external water pump.

5. The tail gas recovery equipment after processing light calcium carbonate according to claim 1, characterized in that: The filtering mechanism (5) comprises: a base (501) is arranged at the bottom end of the cylinder (1), a circular ring plate (502) is fixedly connected to the outer side of the top end of the base (501), a fixing column (503) is fixedly connected to the middle of the top end of the base (501), and a filter plate (504) is fixedly connected to the top end of the fixing column (503).

6. The tail gas recovery equipment after processing light calcium carbonate according to claim 5, characterized in that: The annular plate (502) is threadedly connected to the inner surface of the cylinder (1), and the filter plate (504) is adapted to the inner size of the cylinder (1).

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