Liquorice deodorizing system

Abstract

The utility model relates to the technical field of liquorice deodorization, in particular to a liquorice deodorization system. The licorice deodorizing system comprises a cyclone dust collector, the cyclone dust collector is connected with a multi-medium three-phase catalytic oxidation tower through a wet dust collector, the wet dust collector is connected with a standing sewage tank through a backwashing filter, a jet disperser is arranged in the wet dust collector, and a tower bottom kettle is arranged below the multi-medium three-phase catalytic oxidation tower. According to the system, the cyclone dust collector and the backwash filter are matched for use, so that the dust content of waste gas is reduced, wastewater generated by the wet dust collector is filtered, precipitated and then recycled, the yield of the wastewater is greatly reduced, and the treatment cost is reduced; after the device is operated, the deodorizing effect is good, peculiar smell emission is obviously reduced, the field operation environment is obviously improved, and smooth production of liquorice products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of liquorice deodorization, in particular to a liquorice deodorization system. Background Art

[0002] The main ingredients of compound licorice tablets include licorice fluid extract powder, opium powder, camphor, star anise oil, etc. The exhaust port of the licorice production line is close to the surrounding residents. When producing licorice products, the odor generated by the licorice dust discharged into the surrounding environment through the exhaust air is likely to cause complaints from surrounding residents. Previously, a water spray deodorization device was added, which has a certain deodorization effect, but the odor can still be smelled at the exhaust outlet, and the working environment is still relatively poor.

[0003] In addition, when deodorizing by spraying, a large amount of spray water is required, and the waste water after spraying directly enters the sewage treatment system, which greatly increases the amount of sewage treatment and increases the treatment cost. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a licorice deodorization system. Through the coordinated use of a cyclone dust collector and a backwash filter, while reducing the dust content of the exhaust gas, the wastewater generated by the wet dust collector is filtered and treated, and then recycled after sedimentation, which greatly reduces the amount of wastewater generated and reduces the treatment cost.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The licorice deodorization system includes a cyclone dust collector, which is connected to a multi-media three-phase catalytic oxidation tower through a wet dust collector, and the wet dust collector is connected to a static sewage tank through a backwash filter. A jet disperser is provided inside the wet dust collector, and a bottom kettle is provided below the multi-media three-phase catalytic oxidation tower.

[0007] The jet disperser is provided with multiple jet ports distributed around the jet disperser. After the jetted liquid phase is mixed with impurities in the gas phase, it falls freely to the bottom of the wet dust collector by gravity, and then enters the backwash filter through the pipeline.

[0008] The cyclone dust collector is connected to a dust-containing exhaust gas inlet pipeline, and fan blades are arranged above the jet disperser.

[0009] The multi-media three-phase catalytic oxidation tower is provided with a supporting through-hole plate inside, and an exhaust gas discharge pipe is connected above the multi-media three-phase catalytic oxidation tower. The multi-media three-phase catalytic oxidation tower is connected to the bottom kettle of the tower, and the circulating pump is used to circulate the liquid phase inside the multi-media three-phase catalytic oxidation tower and the bottom kettle of the tower.

[0010] The tower bottom kettle is connected with a reagent barrel, a metering pump is arranged between the reagent barrel and the tower bottom kettle, and the tower bottom kettle is connected with a multi-media three-phase catalytic oxidation tower through a circulation pump.

[0011] A backwash filter inlet pipe is connected between the wet dust collector and the backwash filter, and the tower bottom kettle is connected to the backwash filter inlet pipe through a tower bottom kettle outlet pipe.

[0012] The backwashing filter is provided with a backwashing pipeline and an impurity discharge port, and the static sewage tank is provided with a liquid level meter.

[0013] The stationary sewage tank is connected to the jet disperser through a jet pump, a clean water pipe is connected to the jet pump, and a jet pipe is provided between the jet pump and the jet disperser. The connection between the jet pump and the stationary sewage tank is located at a higher position of the stationary sewage tank, and high-position recycling is performed. The sewage treated by the backwash filter and the stationary sewage tank has greatly reduced impurities and can be returned to the wet dust collector again. The liquid phase in the bottom kettle of the tower is intermittently discharged to the backwash filter.

[0014] The multi-stage, multi-media, three-phase catalytic oxidation VOCs treatment technology utilizes the interaction between catalysts and oxidants to generate a large number of hydroxyl radicals (·OH) in the solution. Its oxidation potential can reach 2.8V, which is the second strongest oxidant in nature after fluorine. It will attack the volatile organic compounds in the exhaust gas, break the molecular chains of the volatile organic compounds, and quickly form short-chain alkane carboxylic acids (R-COOH) with high solubility in water at the ends of the molecular chains, which are continuously oxidized into CO2 and H2O in the main body of the solution.

[0015] The components of workshop waste gas mainly include hexanal, hexanol, hexanoic acid, benzyl chloride, octenal, nonanal, N,N-dimethyl-1-dodecyl primary amine, hexadecanoic acid, naphthol, pinene, phellandrene, limonene, cypermethrin, etc., which can be roughly divided into aldehydes, alcohols, acids, phenols, aromatic hydrocarbons, olefins, alkanes, etc. The components with aldehyde, alcohol, phenol, olefin, alkane and other groups in the waste gas to be treated can undergo gas-liquid-solid three-phase catalytic oxidation reaction at the liquid film interface on the catalyst surface to generate organic carboxylic acid substances that are highly soluble in water, and are continuously oxidized into CO2 and H2O in the main body of the solution. However, those containing benzene ring groups are more difficult to treat. Multi-stage multi-media three-phase catalytic oxidation VOCs treatment technology has excellent treatment effect on benzene series in waste gas.

[0016] After the dust-containing exhaust gas is treated with a large amount of impurities by the cyclone dust collector, it enters the wet dust collector, the jet pump is started, and the exhaust gas is further treated in the wet dust collector. The gas phase after treatment enters the multi-media three-phase catalytic oxidation tower, the circulation pump is started, and the chemical substances in its phase are reacted and removed, and then discharged through the exhaust gas exhaust pipe; the wastewater generated by the wet dust collector is filtered by the backwash filter, enters the static sewage tank, and then is recovered by the jet pump at a high position and returned to the jet disperser. The liquid phase in the kettle at the bottom of the tower is intermittently discharged to the backwash filter.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The licorice deodorization system of the utility model is adopted. Through the coordinated use of the cyclone dust collector and the backwash filter, the dust content of the exhaust gas is reduced, and the wastewater generated by the wet dust collector is filtered and treated, and then recycled after sedimentation, which greatly reduces the amount of wastewater generated and reduces the processing cost. After the operation of this device, the deodorization effect is better, the odor emission is significantly reduced, the on-site working environment is significantly improved, and the smooth production of licorice products is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the licorice deodorization system of the utility model;

[0020] In the figure: 1. Cyclone dust collector; 2. Wet dust collector; 3. Multi-media three-phase catalytic oxidation tower; 4. Backwash filter; 5. Static sewage tank; 6. Chemical barrel; 7. Tower bottom kettle; 8. Dust-containing exhaust gas inlet pipe; 9. Jet disperser; 10. Fan blades; 11. Support through-hole plate; 12. Circulation pump; 13. Exhaust gas discharge pipe; 14. Metering pump; 15. Backwash pipe; 16. Impurity discharge port; 17. Backwash filter inlet pipe; 18. Tower bottom kettle outlet pipe; 19. Liquid level meter; 20. Clean water pipe; 21. Jet pump; 22. Jet pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] like Figure 1As shown, the licorice deodorization system includes a cyclone dust collector 1, which is connected to a multi-media three-phase catalytic oxidation tower 3 through a wet dust collector 2, and the wet dust collector 2 is connected to a stationary sewage tank 5 through a backwash filter 4. A jet disperser 9 is provided inside the wet dust collector 2, and a bottom kettle 7 is provided below the multi-media three-phase catalytic oxidation tower 3. The jet disperser 9 is provided with a plurality of jet ports, which are distributed around the jet disperser 9. After the jetted liquid phase is mixed with impurities in the gas phase, it falls freely to the bottom of the wet dust collector 2 by gravity, and then enters the backwash filter 4 through a pipeline. The cyclone dust collector 1 is connected to a dust-containing exhaust gas inlet pipeline 8, and a fan blade 10 is provided above the jet disperser 9. A supporting through-hole plate 11 is provided inside the multi-media three-phase catalytic oxidation tower 3, and an exhaust gas discharge pipeline 13 is connected above the multi-media three-phase catalytic oxidation tower 3. The bottom kettle 7 is connected to a reagent barrel 6, a metering pump 14 is provided between the reagent barrel 6 and the bottom kettle 7, and the bottom kettle 7 is connected to the multi-media three-phase catalytic oxidation tower 3 through a circulation pump 12. A backwash filter inlet pipe 17 is connected between the wet dust collector 2 and the backwash filter 4, and the bottom kettle 7 is connected to the backwash filter inlet pipe 17 through a bottom kettle outlet pipe 18. A backwash filter 4 is provided with a backwash pipe 15 and an impurity discharge port 16, and a liquid level meter 19 is provided on the stationary sewage tank 5. The stationary sewage tank 5 is connected to the jet disperser 9 through a jet pump 21, a clean water pipe 20 is connected to the jet pump 21, and a jet pipe 22 is provided between the jet pump 21 and the jet disperser 9.

[0024] The above licorice deodorization system, when in operation, comprises the following steps:

[0025] (1) After the dust-containing exhaust gas is treated with a large amount of impurities by the cyclone dust collector 1, it enters the wet dust collector 2, and the jet pump 21 is started. The exhaust gas is further treated in the wet dust collector 2. The gas phase after treatment enters the multi-media three-phase catalytic oxidation tower 3, and the circulation pump 12 is started to react and remove the chemical substances in its phase, and then it is discharged through the exhaust gas discharge pipe 13; (2) The wastewater generated by the wet dust collector 2 is filtered by the backwash filter 4 and enters the static sewage tank 5. After that, it is recovered at a high position by the jet pump 21 and returned to the jet disperser 9. The liquid phase in the bottom kettle 7 of the tower is intermittently discharged to the backwash filter 4.

Claims

1. A liquorice deodorization system, characterized in that: The invention comprises a cyclone dust collector (1), wherein the cyclone dust collector (1) is connected to a multi-media three-phase catalytic oxidation tower (3) via a wet dust collector (2), the wet dust collector (2) is connected to a stationary sewage tank (5) via a backwash filter (4), a jet disperser (9) is provided inside the wet dust collector (2), and a bottom kettle (7) is provided below the multi-media three-phase catalytic oxidation tower (3).

2. The licorice deodorization system according to claim 1, characterized in that: The cyclone dust collector (1) is connected to a dust-containing exhaust gas inlet pipe (8), and a fan blade (10) is provided above the jet disperser (9).

3. The licorice deodorization system according to claim 1, characterized in that: A supporting through-hole plate (11) is provided inside the multi-media three-phase catalytic oxidation tower (3), and an exhaust gas discharge pipe (13) is connected above the multi-media three-phase catalytic oxidation tower (3).

4. The licorice deodorization system according to claim 1, characterized in that: The tower bottom kettle (7) is connected to a reagent barrel (6), a metering pump (14) is provided between the reagent barrel (6) and the tower bottom kettle (7), and the tower bottom kettle (7) is connected to the multi-media three-phase catalytic oxidation tower (3) via a circulation pump (12).

5. The licorice deodorization system according to claim 1, characterized in that: A backwash filter inlet pipe (17) is connected between the wet dust collector (2) and the backwash filter (4), and the tower bottom kettle (7) is connected to the backwash filter inlet pipe (17) via a tower bottom kettle outlet pipe (18).

6. The licorice deodorization system according to claim 1, characterized in that: The backwash filter (4) is provided with a backwash pipe (15) and an impurity discharge port (16), and the stationary sewage tank (5) is provided with a liquid level meter (19).

7. The licorice deodorization system according to claim 1, characterized in that: The stationary sewage tank (5) is connected to the jet disperser (9) via a jet pump (21), a clean water pipeline (20) is connected to the jet pump (21), and a jet pipeline (22) is provided between the jet pump (21) and the jet disperser (9).

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