A shaft furnace gas heat exchanger blowdown device

Abstract

The invention discloses a blowdown device for a shaft furnace gas heat exchanger, which comprises a gas outlet box, a gas outlet pipe, an air inlet pipe, an air inlet box, a funnel and a gas preheating pipe, and the gas outlet box is arranged on the side of the inlet box At the top, the walls of the outlet box and the inlet box are hollow and sealed structures, and several gas preheating pipes are arranged inside the outlet box and the inlet box, and the side walls of the outlet box and the inlet box Connected, the air outlet pipe and the air inlet pipe are respectively arranged on the other side of the air outlet box and the air inlet box; the bottom of the air inlet box is connected to a funnel, and the funnel is composed of a plurality of seamless pipes, and one end of the seamless pipe is connected The space inside the wall of the air intake box. The invention connects the funnel at the bottom of the air intake box, so that the moisture and impurities in the gas sink into the inside of the funnel, and finally discharged into the gas water seal box, avoiding the port of the gas preheating pipe being blocked by the moisture and impurities Live, improve the service life and efficiency of the heat exchanger.

Description

technical field [0001] The invention relates to a blowdown device, in particular to a blowdown device for a shaft furnace gas heat exchanger. Background technique [0002] The shaft furnace gas heat exchanger is composed of upper and lower boxes. There are 137 gas pipes of φ60*2000mm (length) in one box. Due to the presence of moisture and impurities in the used gas, the gas flows from the lower box horizontally Resistance is generated when passing through the upper box, and the moisture and impurities in the gas are easily blocked and accumulated at both ends of the box, resulting in more moisture and impurities, which block the gas heat exchange tube. In addition, the impurities in the gas contain corrosive components. Long-term gas pipe corrosion and leakage caused by the scrapped heat exchanger. Contents of the invention [0003] The object of the present invention is to provide a shaft furnace gas heat exchanger blowdown device to solve the problems raised in the abo...

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Problems solved by technology

[0002] The shaft furnace gas heat exchanger is composed of upper and lower boxes. There are 137 gas pipes of φ60*2000mm (length) in one box. Due to the presence of moisture and impurities in the used gas, the gas flows from the lower box horizontally Resistance is generated when passing through the upper box, and the moisture and impurities in the gas are easily blocked and accumulated at both ends of the box, resulting in more moisture and impurities, which block the gas heat exchange tube. In addition, the impurities in the gas contain corrosive components. Long-term corrosion of gas pipes and air leakage, resulting in scrapped heat exchangers

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