Rising pipe base heat exchange apparatus

Abstract

The present invention relates to the field of heat exchangers, particularly to a rising pipe base heat exchange apparatus for being buried under the ground. The rising pipe base heat exchange apparatus comprises a vertically arranged vertical pipe section with the part buried under the ground, wherein the lower portion of the vertical pipe section is provided with a flue gas inlet, and the upper portion is provided with a flue gas outlet. The rising pipe base heat exchange apparatus is characterized in that a heat exchange pipeline is arranged in the vertical pipe section and comprises a heat exchange inner sleeve and a heat exchange outer sleeve, the side wall of the vertical pipe section is provided with a water inlet pipe communicated with the heat exchange outer sleeve, the place positioned on the other side of the vertical pipe section is provided with a water outlet pipe communicated with the heat exchange outer sleeve, the inner wall of the heat exchange inner sleeve is provided with a high temperature resistance heat conduction coating, and the outer wall of the heat exchange outer sleeve is provided with a thermal insulation layer. With the rising pipe base heat exchange apparatus of the present invention, the flue gas waste heat recovery is achieved, the energy source utilization rate is improved, and the energy source is saved.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a heat exchange device for a riser base buried underground. Background technique [0002] At present, the heat carried by the raw coal gas at 650°C to 800°C escaping from the carbonization chamber through the riser accounts for 36% of the total heat of the coke oven. In order to cool the high-temperature raw gas, it is necessary to spray a large amount of circulating ammonia water at 70°C to 75°C. The high-temperature raw gas is cooled to 82°C to 85°C due to the evaporation of a large amount of circulating ammonia water, and then cooled to 22°C to 35°C through the primary cooler. The heat taken out by the gas is wasted. About 75-80% of the heat released by gas when the gas collecting pipe is cooled is used to evaporate ammonia water, 10-15% makes ammonia water heat up, and the heat dissipation loss of gas collecting pipe accounts for about 10%. So far, no mature and reliable recy...

AI Technical Summary

Problems solved by technology

So far, no mature and reliable recycling device has been put into operation. Many coking enterprises at home and abroad have done many experiments and researches on the recycling of raw gas waste heat in the rising pipe of the coke oven, and many units have carried out technical transformation and application, but It is not ideal for the treatment of high temperature, the treatment of harsh working conditions when starting and stopping, and the treatment of internal deposits of tar and coke

Images