Triazinone tail chlorine recycling device

Abstract

The utility model discloses a triazinone tail chlorine recycling device which comprises a base, a tank body is arranged on the base, a mixed gas inlet is formed in the side wall of the lower end of the tank body, a purified gas outlet is formed in the top of the tank body, a liquid outlet is formed in the bottom of the tank body, a filter cartridge is coaxially arranged in the tank body, the outer wall of the filter cartridge is fixedly connected with the inner wall of the tank body, and filler is arranged in the filter cartridge. A first sealing plate is arranged at the upper end of the filter cartridge, a second sealing plate is arranged at the lower end of the filter cartridge, a liquid inlet is formed in the middle of the first sealing plate, a plurality of exhaust ports are formed in the first sealing plate around the liquid inlet, each exhaust port is connected with an exhaust pipe, a plurality of air inlets are formed in the second sealing plate, and the lower end of each air inlet is connected with an air inlet pipe; a spiral spray head is arranged on the spray pipe, a demister is arranged above the spray pipe, a mounting disc is arranged below the spiral spray head, a plurality of air outlets are formed in the mounting disc, the upper end of each air outlet is connected with an air outlet pipe, and an aeration head is arranged at the upper end of each air outlet pipe. The azinone tail chlorine recovery device is high in azinone tail chlorine recovery efficiency and low in recovery cost.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical waste gas treatment equipment, in particular to a triazone tail chlorine recovery and utilization device. Background Art

[0002] Triazinon is a class of heterocyclic compounds with potential biological activity, also known as diethylhexyl butyramido triazone, with a molecular formula of C7H12N4SO, a white powder with a density of 1.4g / cm3, a melting point of 211-214°C, a boiling point of 284.7°C, and a flash point of 126°C. Triazinon is a potentially biologically active heterocyclic compound and a pesticide intermediate used in the synthesis of the herbicide metribuzin. The tail gas from triazone synthesis contains chlorine, which is highly irritating and toxic and can cause great harm to humans and the environment. The chlorine in the tail gas needs to be treated before discharge to prevent environmental pollution.

[0003] At present, the tail chlorine of triazone is generally treated together with other acidic gases using a double desulfurization tower. The cost of the double desulfurization tower is high, and it is difficult to recover the salts produced when the tail chlorine of triazone is mixed with other acidic gases, resulting in a waste of resources. In addition, the desulfurization tower is not suitable for treating tail chlorine of different concentrations, the treatment cost is high, and the treatment efficiency of high-concentration tail gas is low. Utility Model Content

[0004] The utility model provides a triazone tail chlorine recovery and utilization device, which solves the problems of high cost, great recovery difficulty and low recovery efficiency of traditional triazone tail chlorine recovery equipment.

[0005] The utility model provides a triazone tail chlorine recovery and utilization device, comprising a base, a tank body is arranged on the base, a mixed gas inlet is arranged on the side wall of the lower end of the tank body, a purified gas outlet is arranged on the top, and a liquid discharge port is arranged on the bottom, a filter cartridge is coaxially arranged in the tank body, the outer wall of the filter cartridge is fixedly connected to the inner wall of the tank, a filler is arranged in the filter cartridge, a first sealing plate is arranged on the upper end of the filter cartridge, a second sealing plate is arranged on the lower end of the filter cartridge, a liquid inlet is arranged in the middle of the first sealing plate, a plurality of exhaust ports are arranged on the first sealing plate around the liquid inlet, each exhaust port is connected to an exhaust pipe, a plurality of air inlets are arranged on the second sealing plate, the lower end of each air inlet is connected to an air inlet pipe, a spray pipe is arranged above the filter cartridge, a spiral nozzle is arranged on the spray pipe, and a demister is arranged above the spray pipe.

[0006] In the above technical solution, further, a mounting plate is provided below the spiral nozzle, a plurality of air outlets are provided on the mounting plate, the upper end of each air outlet is connected to the air outlet pipe, an aeration head is provided at the upper end of the air outlet pipe, the bottom of the aeration head is connected to a guide pipe, the guide pipe is passed through the upper end of the air outlet pipe, a positioning sleeve is provided on the outer wall of the air outlet pipe, and a plurality of radially distributed grooves are provided on the upper end surface of the positioning sleeve along the circumferential direction.

[0007] In the above technical solution, further, a spiral flow channel is provided inside the side wall of the filter cartridge along the axial direction.

[0008] In the above technical solution, further, the air inlets are distributed in a circular array on the first sealing plate, and the air outlets are distributed in a circular array on the second sealing plate.

[0009] In the above technical solution, preferably, the filler is sponge.

[0010] In the above technical solution, further, the mixed gas inlet is connected to a gas supply pipeline, and a chlorine gas detector is provided on the gas supply pipeline.

[0011] It can be seen from the above technical solutions that the utility model provides a triazone tail chlorine recovery and utilization device.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By allowing the chlorine-containing waste gas to enter from the bottom of the tank and move upward, the alkaline liquid containing NaOH is evenly sprayed out from the top of the tank through the spiral nozzle on the spray pipe, and penetrates into the filler in the filter cartridge, and contacts with the chlorine-containing waste gas in countercurrent. The chlorine in the chlorine-containing waste gas is fully absorbed by NaOH, and the chlorine content in the waste gas that is not absorbed is less than 1mg / m 3 The chlorine gas is discharged into the atmosphere through a fan and is absorbed by the alkali solution to become sodium hypochlorite for easy recycling. The chlorine gas recovery efficiency is low and the recovery cost is low.

[0014] 2. The alkali solution is accumulated by the installation plate, and the aeration head is raised by the positioning sleeve. The alkali solution overflows from the installation plate into the outlet pipe and is discharged to the first sealing plate, thereby improving the utilization rate of the alkali solution and reducing the treatment cost of chlorine-containing tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for implementation. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of a triazone tail chlorine recovery and utilization device proposed in the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of a triazone tail chlorine recovery and utilization device proposed in the utility model;

[0018] Figure 3 This is a partial structural cross-sectional diagram of a triazone tail chlorine recovery and utilization device proposed in the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of a filter cartridge of a triazone tail chlorine recovery and utilization device proposed in the utility model;

[0020] Figure 5 This is a cross-sectional schematic diagram of the installation structure of the aeration head of a triazone tail chlorine recovery and utilization device proposed in the utility model;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of a positioning sleeve of a triazone tail chlorine recovery and utilization device proposed in the utility model.

[0022] In the picture:

[0023] 1- Base;

[0024] 2-tank body; 21-mixed gas inlet; 22-purified gas outlet; 23-liquid drain; 24-gas supply pipe; 25-chlorine gas detector;

[0025] 3-filter cartridge; 30-filler; 31-first sealing plate; 32-second sealing plate; 33-spiral flow channel; 311-liquid inlet; 312-exhaust port; 313-exhaust pipe; 321-air inlet; 322-inlet pipe;

[0026] 4-spray pipe; 41-spiral sprinkler;

[0027] 5- demister;

[0028] 6-mounting plate; 61-air outlet; 62-air outlet pipe; 63-aeration head; 64-guide pipe; 65-positioning sleeve; 651-groove. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1:

[0031] See also Figure 1-6A triazone tail chlorine recovery and utilization device includes a base 1, a tank body 2 suspended and fixed on the base 1, a mixed gas inlet 21 is provided on the side wall of the lower end of the tank body 2, a purified gas outlet 22 is provided on the top, and a liquid discharge port 23 is provided on the bottom. The mixed gas inlet 21 is connected to the Roots blower to supply the triazone production tail gas, the purified gas outlet 22 is used to discharge the purified gas that has absorbed the chlorine, and the liquid discharge port 23 is used to discharge the hypochlorite obtained by the reaction of chlorine and alkali solution for recycling. A filter cartridge 3 is coaxially arranged in the tank body 2, and the outer wall of the filter cartridge 3 is fixedly connected to the inner wall of the tank body 2 by bolts. A filler 30 is provided in the filter cartridge 3. The filler 30 is used to absorb the alkali solution and react with the chlorine gas entering the filler 30, thereby increasing the contact area so that the chlorine gas can fully react and absorb with the alkali solution in the filler 30. A first sealing plate 31 is provided at the upper end of the filter cartridge 3 to seal its upper end, and a second sealing plate 32 is provided at the lower end to seal its lower end. A liquid inlet 311 is provided in the middle of the first sealing plate 31. The size of the liquid inlet 311 is 5 mm, and is used to allow part of the alkali solution accumulated on the first sealing plate 31 to flow back into the filter cartridge 3 and penetrate into the filler 30. A plurality of exhaust ports 31 are provided on the first sealing plate 31 around the liquid inlet 311. 12, each exhaust port 312 is connected to an exhaust pipe 313, and the exhaust pipe 313 is used to guide the gas in the filter cartridge 3 to the top of the first sealing plate 31, and at the same time prevent the alkali solution accumulated on the first sealing plate 31 from entering the filter cartridge 3 too early, so that a certain amount of alkali solution accumulates on the first sealing plate 31, increasing the contact area between the chlorine and the alkali solution. A plurality of air inlets 321 are provided on the second sealing plate 32, and the lower end of each air inlet 321 is connected to an air inlet pipe 322, which facilitates the introduction of chlorine gas below the first sealing plate 31 into the filter cartridge 3 through the air inlet pipe 322. A horizontal spray pipe 4 is provided above the filter cartridge 3, and both ends of the spray pipe 4 are connected to the tank The inner walls on both sides of the tank body 2 are fixedly connected, and one section of the spray pipe 4 passes through the side wall of the tank body 2 and is connected to the alkali liquid supply pipe outside the tank body 2 through a pipe joint. The alkali liquid supply pipe supplies high-pressure alkali liquid through an alkali liquid storage tank and a booster pump. A spiral nozzle 41 is provided in the middle of the spray pipe 4. The nozzle mouth of the spiral nozzle 41 faces downward and sprays alkali liquid downward in a conical shape. The spray range extends from the middle of the tank body 2 to the inner wall of the tank body 2 around it, forming a water curtain to absorb the chlorine gas passing through. A demister 5 is provided above the spray pipe 4. The demister 5 is an existing commercially available equipment, which is used to intercept water droplets in the atomized gas sprayed from the spiral nozzle 41. Chlorine-containing waste gas enters from the bottom of the tank 2 and moves upward, and the alkaline liquid containing NaOH is evenly sprayed out from the top of the tank 2 through the spiral nozzle 41 on the spray pipe 4, and penetrates into the filler 30 in the filter cartridge 3, and contacts with the chlorine-containing waste gas in countercurrent. The chlorine in the chlorine-containing waste gas is fully absorbed by the NaOH, and the chlorine content in the waste gas that is not absorbed is less than 1 mg / m 3 The chlorine gas is discharged into the atmosphere through a fan and is absorbed by the alkali solution to become sodium hypochlorite for easy recycling. The chlorine gas recovery efficiency is low and the recovery cost is low.

[0032] In this embodiment, see Figure 2 、 5 6. A horizontal mounting plate 6 is provided below the spiral nozzle 41. The circumferential edge of the mounting plate 6 is sealed and connected to the inner wall of the tank body 2. A plurality of air outlets 61 are provided on the mounting plate 6, and the upper end of each air outlet 61 is connected to an air outlet pipe 62. An aeration head 63 is provided on the upper end of the air outlet pipe 62. The aeration head 63 is an existing commercially available device. The bottom of the aeration head 63 is connected to a vertical guide pipe 64. The inner cavity of the aeration head 63 is sealed and connected to the upper end of the guide pipe 64, so that the gas in the guide pipe 64 enters the inner cavity of the aeration head 63 and is sprayed upward in a divergent shape through the aeration head 63, and fully contacts and reacts with the alkali solution uniformly sprayed from the spiral nozzle 41. The guide pipe 64 A positioning sleeve 65 is provided on the upper end of the air outlet pipe 62, and the outer wall of the air outlet pipe 62 is covered with a positioning sleeve 65. The air outlet pipe 62 and the central hole gap of the positioning sleeve 65 are matched so that the positioning sleeve 65 can be guided and moved up and down on the outer wall of the air outlet pipe 62. The positioning sleeve 65 is made of a foam material with good buoyancy. When a large amount of alkali solution accumulates on the mounting plate 6, the positioning sleeve 65 will float up, and the aeration head 63 will be raised, and the upper end of the air outlet pipe 62 will be opened. Through the two radially distributed grooves 651 arranged along the circumferential direction on the upper end surface of the positioning sleeve 65, the alkali solution on the mounting plate 6 will overflow into the air outlet pipe 62 and be discharged onto the first sealing plate 31, thereby improving the utilization rate of the alkali solution.

[0033] In this embodiment, see Figure 2 、 3 4. A spiral flow channel 33 is axially arranged inside the side wall of the filter cartridge 3. The upper end of the spiral flow channel 33 passes through the first sealing plate 31, and the lower end of the spiral flow channel 33 passes through the second sealing plate 32. Most of the alkali liquid accumulated on the first sealing plate 31 flows downward through the spiral flow channel 33, and the chlorine-containing tail gas below the second sealing plate 32 rises slowly upward through the gap above the alkali liquid flowing in the spiral flow channel 33. During the rising process, it comes into convection contact with the alkali liquid flowing rapidly downward, thereby increasing the absorption efficiency of the chlorine-containing tail gas.

[0034] In this embodiment, see Figure 2 、 3 The exhaust ports 312 are distributed in a circular array on the first sealing plate 31, and the air inlets 321 are distributed in a circular array on the second sealing plate 32, so as to disperse the tail gas to react with the alkali solution, increase the absorption efficiency of chlorine, and increase the utilization rate of the alkali solution.

[0035] In this embodiment, preferably, the filler 3 is a sponge, and other adsorbents may also be selected. Its function is to adsorb the alkali solution inside the filler 3 to increase the contact area with the chlorine gas, so that the waste gas and the alkali solution can fully react.

[0036] In this embodiment, see Figure 2The mixed gas inlet 21 is connected to the air supply pipe 24, and the air supply pipe 24 is connected to the Roots blower to transport the exhaust gas into the tank body 2 for treatment under high pressure. A chlorine detector 25 is set on the air supply pipe 24. The chlorine detector 25 is an existing commercially available equipment for detecting the concentration of chlorine in the exhaust gas entering the tank body 2, so as to control the flow rate of the alkali solution sprayed by the spiral nozzle 41 according to the concentration of chlorine.

[0037] It can be seen from the above technical solution that when in use, the chlorine concentration entering the air supply pipe 24 is detected by the chlorine detector 25. When it exceeds the emission standard, the control system controls the spray pipe 4 to supply alkali solution to the spiral nozzle 41 and spray. The chlorine-containing waste gas enters from the mixed gas inlet 21 at the lower part of the tank body 2 and moves upward. During the movement, a part of it enters the filler 30 in the filter cartridge 3 through the air inlet pipe 322. After the alkali solution infiltrated into the filler 30 reacts, it is discharged to the top of the first sealing plate 31 through the exhaust pipe 313, and continues to react with the alkali solution accumulated on the first sealing plate 31. At the same time, the chlorine-containing waste gas below the second sealing plate 32 The chlorine tail gas slowly rises upward through the gap above the alkali solution flowing in the spiral flow channel 33. During the rising process, it reacts with the alkali solution flowing rapidly downward, and rises above the first sealing plate 31 to continue reacting with the alkali solution accumulated on the surface of the first sealing plate 31. Then, the chlorine-containing gas above the first sealing plate 31 enters the outlet pipe 62 through the outlet 61. The gas in the outlet pipe 62 enters the aeration head 63 and is released through the aeration head 63 to fully react with the alkali solution uniformly sprayed from the spiral nozzle 41. The chlorine in the chlorine-containing waste gas is fully absorbed by the NaOH, and the chlorine content in the waste gas that is not absorbed is less than 1 mg / m 3 The chlorine gas is discharged into the atmosphere through a fan and is absorbed by the alkali solution to become sodium hypochlorite for easy recycling. The chlorine gas recovery efficiency is low and the recovery cost is low.

[0038] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary; the true scope of the invention is indicated by the claims.

[0039] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A triazone tail chlorine recovery and utilization device, characterized in that: The invention comprises a base (1), a tank body (2) is arranged on the base (1), a mixed gas inlet (21) is arranged on the side wall of the lower end of the tank body (2), a purified gas outlet (22) is arranged on the top, and a liquid discharge port (23) is arranged on the bottom, a filter cartridge (3) is coaxially arranged in the tank body (2), the outer wall of the filter cartridge (3) is fixedly connected to the inner wall of the tank body (2), a filler (30) is arranged in the filter cartridge (3), a first sealing plate (31) is arranged on the upper end of the filter cartridge (3), and a second sealing plate (32) is arranged on the lower end, and the first sealing plate ( A liquid inlet (311) is provided in the middle of the filter cartridge (31), a plurality of exhaust ports (312) are provided on the first sealing plate (31) around the liquid inlet (311), each of the exhaust ports (312) is connected to an exhaust pipe (313), a plurality of air inlets (321) are provided on the second sealing plate (32), the lower end of each air inlet (321) is connected to an air inlet pipe (322), a spray pipe (4) is provided above the filter cartridge (3), a spiral spray head (41) is provided on the spray pipe (4), and a demister (5) is provided above the spray pipe (4).

2. A triazone tail chlorine recovery and utilization device according to claim 1, characterized in that, A mounting plate (6) is provided below the spiral spray head (41), and a plurality of air outlets (61) are provided on the mounting plate (6). The upper end of each air outlet (61) is connected to an air outlet pipe (62), an aeration head (63) is provided at the upper end of the air outlet pipe (62), and the bottom of the aeration head (63) is connected to a guide pipe (64), and the guide pipe (64) is passed through the upper end of the air outlet pipe (62). A positioning sleeve (65) is provided on the outer wall of the air outlet pipe (62), and a plurality of radially distributed grooves (651) are provided on the upper end surface of the positioning sleeve (65) along the circumferential direction.

3. A triazone tail chlorine recovery and utilization device according to claim 1, characterized in that, A spiral flow channel (33) is axially arranged inside the side wall of the filter cartridge (3).

4. A triazone tail chlorine recovery and utilization device according to claim 1, characterized in that, The exhaust ports (312) are distributed in a circumferential array on the first sealing plate (31), and the air inlets (321) are distributed in a circumferential array on the second sealing plate (32).

5. A triazone tail chlorine recovery and utilization device according to claim 1, characterized in that, The filler (30) is a sponge.

6. A triazone tail chlorine recovery and utilization device according to claim 1, characterized in that, The mixed gas inlet (21) is connected to a gas supply pipeline (24), and a chlorine gas detector (25) is provided on the gas supply pipeline (24).

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