一种用于化肥生产的尾气吸收装置

Abstract

本实用新型公开了一种用于化肥生产的尾气吸收装置，包括湍动吸收塔，湍动吸收塔包括上下连接在一起的吸收段和进气出液段，吸收段内设有间隔设置的吸收液喷淋管，吸收液喷淋管的进口位于吸收段外部、出口位于吸收段内部，每个吸收液喷淋管的下方分别设有固定在吸收段侧壁上的小球支撑板，小球支撑板上堆积有湍动小球，吸收段壁面上位于每个小球支撑板处分别设有小球出口；吸收液喷淋管中的吸收液向下流动喷洒在湍动小球表面，来自进气出液段进气口的气体从下往上流动穿过小球支撑板使小球支撑板上的湍动小球产生自转及不定向的湍动，在湍动小球表面气液间连续不断的进行传质；经传质后吸收液向下流动穿过小球支撑板流向进气出液段。

Claims

1. A tail gas absorption device for chemical fertilizer production, characterized by: It includes a turbulent absorption tower, which comprises an absorption section and an inlet / outlet section connected vertically. The inlet / outlet section is equipped with an inlet and an outlet. The top of the absorption section has an outlet. The absorption section contains spaced-apart absorbent spray pipes, with the inlet of each spray pipe located outside the absorption section and the outlet inside. Below each spray pipe is a small ball support plate fixed to the side wall of the absorption section. The ball support plate has space for gas and liquid to pass through, and turbulent liquid accumulates on the ball support plate. The absorber section has a ball outlet located at each ball support plate on its wall surface. The lowest point of the ball outlet is no higher than the top surface of the ball support plate. The absorbent liquid in the absorbent spray pipe flows downward and sprays onto the surface of the turbulent balls. Gas from the inlet of the gas inlet section flows upward and passes through the ball support plate, causing the turbulent balls on the ball support plate to rotate and undergo non-directional turbulence. Mass transfer occurs continuously between the gas and liquid on the surface of the turbulent balls. After mass transfer, the absorbent liquid flows downward through the ball support plate and flows to the gas inlet section.

2. The tail gas absorption device for chemical fertilizer production according to claim 1, characterized in that: The turbulent sphere is a plastic sphere with a diameter of 30-50 mm.

3. The tail gas absorption device for chemical fertilizer production according to claim 2, characterized in that: The turbulent spheres are made of PE, PP, or PPE, and the angle between the outlet of the spheres and the side wall of the turbulent absorption tower is 15°-90°.

4. The tail gas absorption device for chemical fertilizer production according to claim 1, characterized in that: The absorbent spray pipe includes an absorbent main pipe and absorbent branch pipes connected to the absorbent main pipe. The absorbent main pipe and absorbent branch pipes in an absorbent spray pipe are located on the same horizontal plane. One end of the absorbent main pipe is located outside the absorption section and the other end is located inside the absorption section. The end of the absorbent main pipe inside the absorption section is a closed end. The absorbent branch pipes are symmetrically distributed on both sides of the absorbent main pipe. One end of the absorbent branch pipe is connected to the absorbent main pipe and the other end is a closed end. Spray holes are distributed on the bottom surface of the absorbent main pipe and the absorbent branch pipes.

5. The tail gas absorption device for chemical fertilizer production according to claim 4, characterized in that: The absorption section is equipped with a support ring plate for supporting the absorbent spray pipe. The support ring plate is fixed on the inner wall of the absorption section. The closed ends of the absorbent main pipe and the absorbent branch pipe are both fixed to the support ring plate with pipe clamps.

6. The tail gas absorption device for chemical fertilizer production according to claim 1, characterized in that: The walls of the absorption section and the air inlet / liquid outlet section are respectively provided with man / hand holes, which are higher than the highest point of the turbulent ball. The man / hand holes on the absorption section are located between each absorbent liquid spray pipe and the ball support plate.

7. The tail gas absorption device for chemical fertilizer production according to claim 1, characterized in that: An air inlet sleeve is connected to the air inlet, and an air inlet pipe is installed inside the air inlet sleeve. The outlet end of the air inlet pipe is located inside the air inlet and liquid outlet section, and the outlet end of the air inlet pipe is a downward-sloping opening.

8. The tail gas absorption device for chemical fertilizer production according to claim 1, characterized in that: A demister is provided below the air outlet, and the demister is located above the uppermost absorbent spray pipe; the bottom of the air inlet and liquid outlet section is a downward-contracting conical section, and the liquid outlet is located at the bottom of the conical section. 9.The tail gas absorption device for chemical fertilizer production according to claim 8, characterized in that: The bottom of the air inlet and liquid outlet section is provided with a skirt seat, which surrounds the conical section. The skirt seat is provided with a skirt seat inlet, and the liquid outlet is connected to a liquid outlet pipe through an elbow, which passes through the skirt seat.

10. The tail gas absorption device for chemical fertilizer production according to claim 1, characterized in that: The diameter of the absorption section is smaller than that of the air inlet and liquid outlet section. The upper diameter of the air inlet and liquid outlet section gradually decreases upwards until it is equal to the diameter of the absorption section. The lower end of the absorption section and the upper end of the air inlet and liquid outlet section are fixedly connected by a connecting flange.

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