Drying waste gas recovery device for preparing propylene catalyst

Abstract

The utility model discloses a drying waste gas recovery device for preparing propylene catalyst, which comprises a plurality of dryers, a gas recovery negative pressure pipe, a drain pipe and a dehumidification device, the plurality of dryers are arranged below the gas recovery negative pressure pipe, the drain pipe is arranged below the gas recovery negative pressure pipe, and the dehumidification device is arranged below the gas recovery negative pressure pipe. The multiple dehumidification devices are arranged in the gas recovery negative pressure pipe, and the gas inlet ends and the liquid discharging pipes of the dehumidification devices penetrate through the upper side and the lower side of the gas recovery negative pressure pipe correspondingly and are connected with the water discharging pipes and the corresponding dryers. The drying waste gas recovery device for preparing the propylene catalyst is simple in structure, convenient and practical, moisture in waste gas is quickly condensed through the dehumidification device, water condensed by the moisture is intensively guided out and recovered in cooperation with the drainage pipe, and the workshop environment is prevented from being polluted by waste water.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas recovery, specifically relating to a drying waste gas recovery device for preparing propylene catalysts. Background Technology

[0002] Polypropylene catalyst is a chemical substance whose main function is to catalyze polymerization reactions and accelerate the polymerization rate. Polypropylene catalysts can reduce the reaction energy during polymerization, thus making the polymerization reaction faster and more efficient. Furthermore, catalysts can selectively alter the structure and morphology of reactants, thereby obtaining more high-quality products. After the polypropylene catalyst preparation reaction, the raw materials are dried and crushed. Traditionally, a thermal circulation drying oven is used, which has high drying efficiency. The waste gas generated during drying is collected through a negative pressure pipe and sent to a recycling and treatment device for recovery and degradation. The cross-sectional dimensions of the negative pressure pipe are 60cm to 30cm, and the material is generally stainless steel with a thickness of 2mm. After the waste gas enters the negative pressure pipe, it gradually cools down. After cooling, the moisture contained in the waste gas forms water droplets that adhere to the inside of the negative pressure pipe. This leads to a large amount of water accumulation in the negative pressure pipe after prolonged waste gas recovery, making it prone to leakage at the joints of each section of the negative pressure pipe, affecting the workshop environment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a drying waste gas recovery device for the preparation of propylene catalyst. It has a simple structure and is convenient and practical. The device quickly condenses the moisture in the waste gas through a dehumidification device, and the condensed water is collected, discharged and recycled by a drainage pipe to avoid wastewater pollution of the workshop environment.

[0004] A drying waste gas recovery device for propylene catalyst preparation includes a dryer, a gas recovery negative pressure pipe, a drain pipe, and a dehumidification device. Several dryers are disposed below the gas recovery negative pressure pipe. The drain pipe is disposed below the gas recovery negative pressure pipe. Several dehumidification devices are disposed inside the gas recovery negative pressure pipe. The inlet and outlet pipes of each dehumidification device pass through the upper and lower sides of the gas recovery negative pressure pipe, respectively, and are connected to the drain pipe and the corresponding dryer. Each dehumidification device includes an intake pipe, a left isolation plate, a right isolation plate, a drain pipe, and a liquid... The system comprises a conical hopper and a transition pipe. The left and right isolation plates are connected to the inner wall of the gas recovery negative pressure pipe, with their upper and lower ends respectively connected to the top of the gas recovery negative pressure pipe and the liquid conical hopper. Several transition pipes pass through the left and right isolation plates. The liquid conical hopper is connected to the drain pipe via a drain pipe. One end of the suction pipe is connected to the top of the gas recovery negative pressure pipe and is located between the left and right isolation plates. The other end of the suction pipe is engaged with the exhaust port of the gas recovery negative pressure pipe. Several exhaust ports are provided on the right isolation plate.

[0005] Preferably, a fan is provided on the air intake pipe.

[0006] Preferably, one end of the air intake pipe is provided with a horn-shaped air intake port.

[0007] Preferably, the transition tube is provided with several cooling plates.

[0008] Preferably, a gate valve is provided on the air intake pipe.

[0009] Preferably, the drain pipe is equipped with a U-shaped water storage pipe at the drain end.

[0010] Preferably, a water inlet pipe is connected to the middle of the U-shaped water storage pipe, and a water level observation bottle is connected to one end of the water inlet pipe.

[0011] Beneficial effects:

[0012] (1) The present invention provides a drying waste gas recovery device for preparing propylene catalyst. It has a simple structure and is convenient and practical. The device quickly condenses the moisture in the waste gas through a dehumidification device, and the condensed water is collected, discharged and recycled by a drainage pipe to avoid wastewater pollution of the workshop environment.

[0013] (2) The present invention provides a drying waste gas recovery device for preparing propylene catalyst, which guides the gas from one side of the dehumidification device to the other side through a transition pipe. At the same time, the gas passing through the transition pipe will cool down the transition pipe, thereby achieving the purpose of condensing the moisture in the waste gas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the waste gas recovery device;

[0015] Figure 2 This is a schematic diagram of the dehumidification device;

[0016] 1-Dryer, 2-Gas recovery negative pressure pipe, 3-Drain pipe, 4-Dehumidifier, 41-Suction pipe, 42-Flute suction port, 43-Fan, 44-Left isolation plate, 45-Right isolation plate, 46-Exhaust port, 47-Drain pipe, 48-Liquid conical collection hopper, 49-Transfer pipe, 5-U-shaped water storage pipe, 6-Water addition pipe, 7-Water level observation bottle. Detailed Implementation

[0017] The embodiments of this utility model are further described below with reference to the accompanying drawings.

[0018] Example 1

[0019] like Figures 1 to 2As shown; a drying waste gas recovery device for preparing propylene catalyst includes a dryer 1, a gas recovery negative pressure pipe 2, a drain pipe 3, and a dehumidification device 4. Several dryers 1 are arranged below the gas recovery negative pressure pipe 2, the drain pipe 3 is located below the gas recovery negative pressure pipe 2, and several dehumidification devices 4 are arranged inside the gas recovery negative pressure pipe 2. The inlet and outlet pipes of the dehumidification devices 4 respectively penetrate the upper and lower sides of the gas recovery negative pressure pipe 2 and are connected to the drain pipe 3 and the corresponding dryer 1. The dehumidification device 4 includes an intake pipe 41, a left isolation plate 44, a right isolation plate 45, a drain pipe 47, a liquid conical collection hopper 48, and a transition pipe 49. The left isolation plate 44 and the right isolation plate 45 are connected to the inner wall of the gas recovery negative pressure pipe 2, and their upper and lower ends are respectively connected to the top of the gas recovery negative pressure pipe 2 and the liquid conical collection hopper 48. The middle hopper 48 is connected, and several transition pipes 49 pass through the left isolation plate 44 and the right isolation plate 45. The liquid conical hopper 48 is connected to the drain pipe 3 through the drain pipe 47. One end of the suction pipe 41 is connected to the top of the gas recovery negative pressure pipe 2 and is located between the left isolation plate 44 and the right isolation plate 45. The other end of the suction pipe 41 is matched with the exhaust port of the gas recovery negative pressure pipe 2. Several exhaust ports 46 are opened on the right isolation plate 45. A fan 43 is provided on the suction pipe 41. A horn-shaped suction port 42 is provided at one end of the suction pipe 41. Several cooling plates are provided on the transition pipe 49. A gate valve is provided on the suction pipe 41. A U-shaped water storage pipe 5 is provided at the drain end of the drain pipe 3. A water filling pipe 6 is connected to the middle of the U-shaped water storage pipe 5. One end of the water filling pipe 6 is connected to a water level observation bottle 7.

[0020] The exhaust gas generated by the dryer 1 enters the space between the left isolation plate 44 and the right isolation plate 45 of the gas recovery negative pressure pipe 2 through the horn-shaped air intake 42 and the air intake pipe 41. It then enters the gas recovery negative pressure pipe 2 on one side of the dehumidification device 4 through the exhaust hole 46 on the right isolation plate 45. The gas then passes through several transition pipes 49 into the gas recovery negative pressure pipe 2 on the other side of the dehumidification device 4. Thus, it is discharged and recovered through the gas recovery negative pressure pipe 2. Simultaneously, the space between the gas recovery negative pressure pipe 2 and the liquid conical collection hopper 48 allows the exhaust gas to pass through, preventing a decrease in negative pressure in the area of ​​the gas recovery negative pressure pipe 2 of the adjacent dehumidification device 4. When the exhaust gas passes through the transition pipe 49, the negative pressure in the transition pipe 49 will decrease. The temperature of 9 decreases; after the exhaust gas enters between the left isolation plate 44 and the right isolation plate 45, it will come into contact with the transition pipe 49 and the cooling plate on it, so that the exhaust gas is cooled quickly and the water contained therein will quickly condense into water droplets. The water droplets fall into the liquid conical collection hopper 48, and then the condensed water enters the drain pipe 3 through the drain pipe 47 and is discharged. A certain amount of water is stored through the U-shaped water storage pipe 5 to prevent air from entering the gas recovery negative pressure pipe 2 through the drain pipe 3. The water level in the U-shaped water storage pipe 5 is observed through the water level observation bottle 7 and water is added to the U-shaped water storage pipe 5. The speed of exhaust gas adsorption by the suction pipe 41 is controlled by the gate valve, and the suction force of the suction pipe 41 is increased by the fan 43.

[0021] The specific embodiments of this utility model have been described in detail above, but they are merely examples, and this utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model are covered within the scope of this utility model.

Claims

1. A drying off-gas recovery device for preparing a propylene catalyst, characterized by: The utility model provides a drying machine, gas recovery negative pressure pipe (2), drain pipe (3) and dehumidification device (4) are included, gas recovery negative pressure pipe (2) below is provided with a plurality of drying machine (1), drain pipe (3) is arranged in gas recovery negative pressure pipe (2) below, a plurality of dehumidification device (4) is arranged in gas recovery negative pressure pipe (2), the air inlet end of dehumidification device (4) and drain pipe are respectively penetrated gas recovery negative pressure pipe (2) upper and lower two sides and are connected with drain pipe (3) and corresponding drying machine (1);Dehumidification device (4) includes air suction pipe (41), left isolation board (44), right isolation board (45), drain pipe (47), liquid conical concentration hopper (48) and transition pipe (49), left isolation board (44) and right isolation board (45) are connected on the inner wall of gas recovery negative pressure pipe (2) and the upper end and lower end are connected with gas recovery negative pressure pipe (2) top and liquid conical concentration hopper (48) respectively, a plurality of transition pipes (49) penetrate left isolation board (44) and right isolation board (45), liquid conical concentration hopper (48) is connected with drain pipe (3) through drain pipe (47), one end of air suction pipe (41) is connected in gas recovery negative pressure pipe (2) top and is located between left isolation board (44) and right isolation board (45), the other end of air suction pipe (41) is matched with gas recovery negative pressure pipe (2) exhaust hole, a plurality of exhaust holes (46) are set up on right isolation board (45).

2. A dried off-gas recovery unit for preparing a propylene catalyst according to claim 1, characterized in that: Fan (43) is arranged on the air suction pipe (41).

3. A dried off-gas recovery unit for preparing a propylene catalyst according to claim 2, characterized in that: The air suction pipe (41) one end is provided with flared air inlet (42).

4. A dried off-gas recovery unit for preparing a propylene catalyst according to claim 3, characterized in that: A plurality of cooling fins are arranged on the transition pipe (49).

5. A dried off-gas recovery unit for preparing a propylene catalyst according to claim 4, characterized in that: Gate valve is arranged on the air suction pipe (41).

6. A dried off-gas recovery device for preparing a propylene catalyst according to claim 1 or 5, characterized in that: The drain pipe (3) drain end is provided with U type water storage pipe (5).

7. A dried off-gas recovery unit for preparing a propylene catalyst according to claim 6, characterized in that: The U type water storage pipe (5) middle part is connected with water adding pipe (6), and one end of the water adding pipe (6) is connected with water level observation bottle (7).

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