转炉一次烟气放散烟囱高效低耗脱白装置

Abstract

本实用新型公开一种转炉一次烟气放散烟囱高效低耗脱白装置，包括转炉一次烟气放散烟囱、烟气入口管道、挡水板、分段排水系统、旋风脱水器、喉部螺旋式翅片冷却器、旋流器、集水器、上部螺旋式翅片冷却器和点火装置。烟气依次进行预脱水、高效冷却脱白、强化冷却、极致冷却脱白后排入大气，烟气中的水蒸汽充分凝结并被分段去除，烟气的含湿量被极致降低，能高效地减少放散烟囱出口的白烟羽和多种污染物，有助于实现超超低排放。装置运行能耗低，脱白效果好，具有较高的性价比，适用于新建和改造项目，尤其适用于烟气含水量较高的情况。

Claims

1. A high-efficiency and low-consumption white smoke removal device for a converter primary flue gas emission stack, characterized in that, It includes a converter primary flue gas venting chimney, flue gas inlet pipe, baffle plate, segmented drainage system, cyclone dehydrator, throat spiral finned cooler, cyclone separator, water collector, upper spiral finned cooler and ignition device; The baffle plate is installed on the inner wall of the flue gas inlet pipe to intercept liquid droplets on the wall of the flue gas inlet pipe and some liquid droplets in the flue gas. The cyclone dehydrator includes a cylindrical body, a conical body, and a vertical exhaust duct. The conical body is connected to the bottom of the cylindrical body, and the vertical exhaust duct is installed at the top of the cylindrical body. The cylindrical body, the conical body, and the vertical exhaust duct are internally connected. The vertical exhaust duct is connected to the bottom of the chimney, and the flue gas inlet duct is connected to the side of the cylindrical body. The flue gas inlet duct is tangential to and connected to the cylindrical body. After the flue gas enters the cyclone dehydrator tangentially, it flows spirally along the wall. The cyclone separator includes a fixed plate and cyclone blades mounted on the fixed plate. The diameter of the fixed plate is smaller than the diameter of the chimney at its location. One end of the cyclone blades is connected to the fixed plate, and the other end of the cyclone blades is connected to the inner wall of the chimney. The cyclone separator is located at the beginning of the upper straight pipe section of the chimney, and the flue gas rises from bottom to top through the gaps between the cyclone blades to generate a cyclone. The water collector includes a porous annular wall and an annular sealing plate connected to the bottom edge of the porous annular wall. The porous annular wall is uniformly provided with holes, and the central hole of the annular sealing plate communicates with the central hole of the porous annular wall. The annular sealing plate connects to the inner wall of the chimney to seal the gap between the bottom edge of the porous annular wall and the inner wall of the chimney. The water collector is located between the cyclone separator and the ignition device. The segmented drainage system includes a first drain outlet, a second drain outlet, a third drain outlet, several drain pipes, and a gas drainer. The first drain outlet is located at the bottom of the flue gas inlet pipe and in front of the baffle plate. The second drain outlet is located at the lowest point of the cyclone dewatering device. The third drain outlet is located at the lowest point of the annular sealing plate of the water collector on the chimney. The first, second, and third drain outlets are all connected to the gas drainer through drain pipes.

2. The converter once-through flue emission chimney high-efficiency low-consumption white smoke removing device according to claim 1, characterized in that: The throat-type spiral finned cooler includes fins spirally wrapped around the outer wall of the chimney throat.

3. The converter once-through flue emission chimney high-efficiency low-consumption white smoke removing device according to claim 1, characterized in that: The upper spiral finned cooler includes fins spirally wrapped around the outer wall of the upper cylindrical body of the chimney.

4. The converter once-through flue emission chimney high-efficiency low-consumption white smoke removing device according to claim 1, characterized in that: The water baffle is circular in shape.

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