A waste gas purification tower for preparing triacetone amine

Abstract

The utility model belongs to waste gas purification technical field, concretely relates to a kind of triacetoneamine preparation waste gas purification tower, including tower body, the left side of the tower body is fixedly connected with inlet pipe, the inner wall of the tower body is fixedly connected with porous plate, the inner wall of the tower body is equipped with transmission assembly for waste gas delivery, the inner wall of the tower body is fixedly connected with boss, the top of the tower body is equipped with cyclone assembly for waste gas purification, the cyclone assembly includes motor two, cyclone vane, the motor two is installed in the top of tower body, and the output shaft of the motor two is connected with rotary rod. This triacetoneamine preparation waste gas purification tower is primarily filtered dust, absorbs water-soluble pollutants by porous plate and water spray head, then removes ammonia, acetone and other pollutants in triacetoneamine preparation waste gas by liquid inlet, spray head and cyclone assembly, and finally processing chamber is further deeply purified, to ensure that waste gas reaches environmental protection emission standard after being treated.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, specifically a waste gas purification tower for the preparation of triacetone amine. Background Technology

[0002] In the chemical industry, triacetone amine is a key intermediate in the synthesis of pharmaceuticals, pesticides, and rubber additives, and its market demand continues to rise along with the development of downstream industries. However, the preparation of triacetone amine involves condensation and cyclization reactions using acetone and ammonia as raw materials, which produce complex waste gases, mainly containing acetone, ammonia, volatile organic compounds (VOCs), and byproducts such as aldehydes and amines. These waste gases are not only flammable, explosive, and highly irritating, but some components are also toxic. If they are emitted directly without effective treatment, they will cause serious air pollution and threaten the surrounding ecological security and human health.

[0003] Currently, in existing technologies, the absorption method usually uses water washing or alkaline washing towers to treat waste gas. Although it can partially remove ammonia and water-soluble impurities, the removal efficiency of volatile organic compounds such as acetone is low. Some packed towers have low gas-liquid mass transfer efficiency and are prone to channeling and flow deviation, resulting in insufficient contact between waste gas and absorption liquid. Therefore, a waste gas purification tower for preparing triacetone amine is proposed. Utility Model Content

[0004] The main objective of this invention is to provide a triacetone amine preparation waste gas purification tower that can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention proposes a triacetone amine preparation waste gas purification tower, comprising a tower body, an inlet pipe fixedly connected to the left side of the tower body, a perforated plate fixedly connected to the inner wall of the tower body, a transmission assembly for waste gas conveying provided on the inner wall of the tower body, a boss fixedly connected to the inner wall of the tower body, and a swirl assembly for waste gas purification provided at the top of the tower body, the swirl assembly comprising:

[0006] Motor 2, which is installed on the top of the tower body, has a rotating rod connected to its output shaft;

[0007] Swirl blades, which are fixedly connected to the outer wall of the swirl rod;

[0008] A bevel gear one is fixedly connected to the end of the rotating rod away from the motor two.

[0009] A second bevel gear is meshed with the right side of the first bevel gear, and a second rotating rod is fixedly connected to the inner wall of the second bevel gear.

[0010] A defoaming wheel is fixedly connected to the outer wall of the rotating rod two, and the outer wall of the defoaming wheel is fixedly connected with serrations.

[0011] Preferably, the transmission assembly includes a motor, which is mounted on the outer wall of the tower. The output shaft of the motor is connected to a main gear. The main gear meshes with a secondary gear and a driven gear. The driven gear meshes with a secondary gear. A rotating rod is fixedly connected to the inner wall of the secondary gear and the secondary gear. The rotating rod extends movably through the outer wall of the tower and inwards. A screen plate is fixedly connected to the outer wall of the extended end of the rotating rod, which can achieve the effect of pushing the exhaust gas to move inside the tower and simultaneously perform secondary screening of the exhaust gas.

[0012] Preferably, a fixed rod is fixedly connected to the inner wall of the tower body, and the rotating rod moves through the fixed rod. The fixed rod provides support and guidance for the rotating rod. A guide groove is opened at the top of the swirl blade, which greatly guides the purified liquid to be evenly distributed on the blade surface and further enhances the gas-liquid mixing effect.

[0013] Preferably, the inner wall of the tower is equipped with water spray nozzles that can spray mist-like water to perform preliminary dust reduction and absorb some water-soluble pollutants in the exhaust gas entering the tower.

[0014] Preferably, the outer wall of the tower body is provided with a liquid inlet for receiving the absorbent liquid required for purifying the waste gas. A spray head is installed on the top of the inner wall of the tower body, and a liquid outlet is provided on the inner wall of the tower body. An exhaust pipe is fixedly connected to the top of the tower body, and a treatment chamber is fixedly connected to the top of the exhaust pipe. An activated carbon adsorption layer and a photocatalytic oxidation layer can be provided in the treatment chamber to deeply purify the discharged waste gas and ensure that the waste gas meets the emission standards.

[0015] Preferably, the liquid inlet is connected to the spray head via a circular pipe, and the liquid outlet is located at the top of the boss, thereby realizing solid-liquid separation and liquid recycling.

[0016] Preferably, the bottom of the tower body is provided with a discharge port, and the discharge port is equipped with a solenoid valve, which can realize automatic timed discharge through the control system, avoiding the tediousness and safety hazards of manual operation.

[0017] This invention provides a waste gas purification tower for the preparation of triacetone amine. It has the following beneficial effects:

[0018] (1) The triacetone amine preparation waste gas purification tower initially filters dust and absorbs water-soluble pollutants through a porous plate and water spray nozzle. Then, it removes pollutants such as ammonia and acetone in the triacetone amine preparation waste gas through the liquid inlet, spray nozzle and cyclone assembly. Finally, the treatment chamber further purifies the waste gas to ensure that the waste gas meets the environmental emission standards after treatment.

[0019] (2) The transmission component of the triacetone amine preparation waste gas purification tower drives the screen plate to rotate through gear transmission, optimizes the waste gas transportation and dispersion, eliminates the bubbles generated by the purification reaction while the cyclone component generates cyclone, and the boss cooperates with the liquid outlet and the material outlet to complete the liquid recovery and impurity discharge. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the transmission component structure of this utility model;

[0024] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0025] Explanation of icon numbers:

[0026] 1. Tower body; 2. Air inlet pipe; 3. Perforated plate; 4. Transmission assembly; 41. Motor 1; 42. Main gear; 43. Secondary gear 1; 44. Driven gear; 45. Secondary gear 2; 46. Rotating rod 1; 47. Screen plate; 5. Water spray head; 6. Boss; 7. Swirl assembly; 71. Motor 2; 72. Rotating rod; 721. Fixed rod; 73. Swirl blades; 731. Guide groove; 74. Bevel gear 1; 75. Bevel gear 2; 76. Rotating rod 2; 77. Defoaming wheel; 78. Sawtooth; 8. Liquid inlet; 9. Spray head; 10. Liquid outlet; 11. Air outlet pipe; 12. Processing chamber; 13. Discharge outlet; 131. Solenoid valve.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-4 This utility model proposes a triacetone amine preparation waste gas purification tower, including a tower body 1, an air inlet pipe 2 fixedly connected to the left side of the tower body 1, a perforated plate 3 fixedly connected to the inner wall of the tower body 1, a transmission component 4 for waste gas transportation provided on the inner wall of the tower body 1, a boss 6 fixedly connected to the inner wall of the tower body 1, and a swirl component 7 for waste gas purification provided on the top of the tower body 1.

[0030] In this embodiment of the invention, for the purpose of purifying exhaust gas, the swirl assembly 7 specifically includes a second motor 71, swirl blades 73, a first bevel gear 74, a second bevel gear 75, and a defoaming wheel 77. The second motor 71 is installed on the top of the tower body 1, and the output shaft of the second motor 71 is connected to a rotating rod 72. A fixing rod 721 is fixedly connected to the inner wall of the tower body 1, and the rotating rod 72 movably passes through the fixing rod 721. The fixing rod 721 provides support and guidance for the rotating rod 72. The swirl blades 73 are fixedly connected to the outer wall of the rotating rod 72. The swirl blades 73 drive the exhaust gas to form a spiral upward swirling motion inside the tower, prolonging the residence time of the exhaust gas inside the tower and enhancing the purification effect. To improve the liquid mass transfer effect, a guide groove 731 is provided at the top of the swirl blade 73. The guide groove 731 extends along the rotation direction of the swirl blade 73, which greatly guides the purified liquid to be evenly distributed on the blade surface and further enhances the gas-liquid mixing effect. The first bevel gear 74 is fixedly connected to the end of the rotating rod 72 away from the second motor 71. The second bevel gear 75 is meshed with the right side of the first bevel gear 74. The inner wall of the second bevel gear 75 is fixedly connected to the second rotating rod 76. The defoaming wheel 77 is fixedly connected to the outer wall of the second rotating rod 76. The outer wall of the defoaming wheel 77 is fixedly connected to the serration 78. The serration 78 breaks the foam generated during the purification process and prevents the foam from blocking the exhaust channel.

[0031] Furthermore, the transmission assembly 4 includes a motor 41, which is installed on the outer wall of the tower body 1. The output shaft of the motor 41 is connected to a main gear 42, which meshes with a secondary gear 43 and a driven gear 44. The driven gear 44 meshes with a secondary gear 45. A rotating rod 46 is fixedly connected to the inner wall of the secondary gear 43 and the secondary gear 45. The rotating rod 46 moves through the outer wall of the tower body 1 and extends inward. A screen plate 47 is fixedly connected to the outer wall of the extended end of the rotating rod 46, which can achieve the effect of pushing the exhaust gas to move inside the tower and simultaneously perform secondary screening of the exhaust gas. A water spray head 5 is installed on the inner wall of the tower body 1. The water spray head 5 can spray a mist of water to perform preliminary dust reduction and absorb some water-soluble pollutants in the exhaust gas entering the tower body 1.

[0032] Furthermore, the outer wall of the tower body 1 is provided with a liquid inlet 8, which is used to receive the absorbent liquid required for purifying the waste gas. A spray head 9 is installed on the top of the inner wall of the tower body 1, and a liquid outlet 10 is provided on the inner wall of the tower body 1. The liquid inlet 8 is connected to the spray head 9 through a connecting circular pipe, and the liquid outlet 10 is located at the top edge of the boss 6 to realize solid-liquid separation and liquid recycling. An exhaust pipe 11 is fixedly connected to the top of the tower body 1, and a treatment chamber 12 is fixedly connected to the top of the exhaust pipe 11. An activated carbon adsorption layer and a photocatalytic oxidation layer can be installed in the treatment chamber 12 to deeply purify the discharged waste gas and ensure that the waste gas meets the emission standards. A discharge port 13 is provided at the bottom of the tower body 1, and a solenoid valve 131 is installed at the discharge port 13. Automatic timed discharge can be realized through the control system to avoid the cumbersome manual operation and safety hazards.

[0033] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that each electrical appliance can work normally. For example, motor 1 41, motor 2 71, and solenoid valve 131 are all connected to the mains power. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0034] In this invention, during use, waste gas containing pollutants such as acetone and ammonia enters the tower body 1 through the inlet pipe 2. The waste gas passes through the perforated plate 3, ensuring even distribution within the tower body 1. The motor 41 is started, driving the main gear 42 to rotate. The main gear 42 drives the auxiliary gear 43 and driven gear 44 to rotate. The driven gear 44 drives the auxiliary gear 45, which in turn drives the two rotating rods 46 to rotate, causing the sieve plate 47 to rotate. The sieve plate 47 can be filled with packing material, performing initial purification of the waste gas and propelling it upwards within the tower. Simultaneously, water spray nozzles 5 located on the inner wall of the tower body 1 spray a mist of water, initially reducing dust in the waste gas and absorbing some water-soluble pollutants. The waste gas is then conveyed upwards through the boss 6, and absorbent liquid is introduced through the inlet 8 on the outer wall of the tower body 1. This absorbent liquid flows through a connecting circular pipe into the top spray nozzle 9, which evenly sprays the absorbent liquid within the tower, ensuring full contact with the rising waste gas. Alkaline pollutants such as ammonia in the waste gas undergo a neutralization reaction with the absorbent liquid, while volatile organic compounds such as acetone are removed through absorption and dissolution. Simultaneously, the starting motor 71 drives the rotating rod 72 to rotate, and the swirl blades 73 rotate accordingly, causing the waste gas to form a spiral upward swirling motion inside the tower. This swirling motion prolongs the residence time of the waste gas inside the tower. The bevel gear 74 at the end of the rotating rod 72 meshes with the bevel gear 75, driving the rotating rod 76 and the defoaming wheel 77 to rotate. The serrations 78 on the outer wall of the defoaming wheel 77 break the foam generated during the purification process, preventing the foam from clogging the exhaust channel. The liquid after absorbing pollutants flows downward under gravity, is supported by the boss 6, and guided to the outlet 10 for discharge, thus realizing liquid recovery and treatment. The discharge port 13 at the bottom of the tower body 1 is used to discharge the deposited solid impurities and sludge. It is electrically connected to the external control system through the solenoid valve 131, which can realize automatic timed discharge. The exhaust gas purified by the tower body 1 enters the treatment chamber 12 through the exhaust pipe 11. The activated carbon adsorption layer and photocatalytic oxidation layer in the treatment chamber 12 carry out deep purification treatment of the exhaust gas, further removing residual pollutants and ensuring that the final exhaust gas meets the environmental emission standards.

[0035] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A triacetone amine preparation waste gas purification tower, comprising a tower body (1), characterized in that: An air inlet pipe (2) is fixedly connected to the left side of the tower body (1). A perforated plate (3) is fixedly connected to the inner wall of the tower body (1). A transmission assembly (4) for conveying exhaust gas is provided on the inner wall of the tower body (1). A boss (6) is fixedly connected to the inner wall of the tower body (1). A cyclone assembly (7) for purifying exhaust gas is provided on the top of the tower body (1). The cyclone assembly (7) includes: Motor 2 (71) is installed on the top of the tower body (1), and the output shaft of the motor 2 (71) is connected to a rotating rod (72); Swirl blades (73) are fixedly connected to the outer wall of the swirl bar (72); A bevel gear (74) is fixedly connected to the end of the rotating rod (72) away from the motor (71); A second bevel gear (75) is meshed with the right side of a first bevel gear (74), and a second rotating rod (76) is fixedly connected to the inner wall of the second bevel gear (75). Defoaming wheel (77) is fixedly connected to the outer wall of rotating rod two (76), and the outer wall of the defoaming wheel (77) is fixedly connected with serrations (78).

2. The triacetone amine preparation waste gas purification tower according to claim 1, characterized in that: The transmission assembly (4) includes a motor (41), which is installed on the outer wall of the tower body (1). The output shaft of the motor (41) is connected to a main gear (42). The main gear (42) is meshed with a secondary gear (43) and a driven gear (44). The driven gear (44) is meshed with a secondary gear (45). A rotating rod (46) is fixedly connected to the inner wall of the secondary gear (43) and the secondary gear (45). The rotating rod (46) moves through the outer wall of the tower body (1) and extends inward. A screen plate (47) is fixedly connected to the outer wall of the extended end of the rotating rod (46).

3. The triacetone amine preparation waste gas purification tower according to claim 1, characterized in that: The inner wall of the tower body (1) is fixedly connected to a fixing rod (721), the swirl rod (72) moves through the fixing rod (721), and the top of the swirl blade (73) is provided with a guide groove (731).

4. The triacetone amine preparation waste gas purification tower according to claim 1, characterized in that: Water spray nozzles (5) are installed on the inner wall of the tower body (1).

5. The triacetone amine preparation waste gas purification tower according to claim 1, characterized in that: The outer wall of the tower body (1) is provided with a liquid inlet (8), the top of the inner wall of the tower body (1) is provided with a spray head (9), the inner wall of the tower body (1) is provided with a liquid outlet (10), the top of the tower body (1) is fixedly connected with an air outlet pipe (11), and the top of the air outlet pipe (11) is fixedly connected with a treatment chamber (12).

6. The triacetone amine preparation waste gas purification tower according to claim 5, characterized in that: The inlet (8) is connected to the spray head (9) through a circular pipe, and the outlet (10) is located on the top of the boss (6).

7. The triacetone amine preparation waste gas purification tower according to claim 1, characterized in that: The bottom of the tower body (1) is provided with a discharge port (13), and a solenoid valve (131) is installed in the discharge port (13).

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