Glass tube air preheater

Abstract

The invention relates to a glass tube preheater, which is characterized in that stainless steel twisted strips are arranged in light tubes of the glass tube, and the heat exchanging coefficient of an inner membrane of each light tube can be increased by reinforcing the turbulent flow of the inner membrane of the light tube. By utilizing the heat exchanging characteristic of the glass tube preheater at a low smoke temperature, the smoke discharging temperature is reduced, the ash accumulation and scaling can be reduced, and the smoke dew point corrosion can be reduced.

Description

technical field [0001] The invention relates to the field of waste heat recovery from heating furnace flue gas in the petrochemical industry. In particular, it relates to a glass tube air preheater, which uses high-temperature flue gas from the heating furnace and cold air for heat exchange. After the flue gas releases heat, the temperature drops and is discharged through the chimney; The combustion system participates in the combustion, thereby reducing the exhaust gas temperature of the chimney and reducing the dew point corrosion of the flue gas. Background technique [0002] As the nature of raw oil in the refining industry becomes heavier and the sulfur content of raw materials continues to increase, as a key equipment for the recovery of waste heat from heating furnace flue gas in domestic petrochemical enterprises - the operating effect of the air preheater is more and more valued by enterprises . During the production and operation of the heating furnace, the probl...

AI Technical Summary

Problems solved by technology

Due to the existence of sulfuric acid liquid, on the one hand, the dust in the flue gas is adhered to become wet ash and sticky scale that are difficult to clean, causing blockage of the flue gas passage; on the other hand, the acid liquid corrodes the equipment body, resulting in chemical corrosion of the steel structure

[0004] The existing air preheater has serious problems of flue gas fouling and dew point corrosion, and the exhaust gas temperature is high, which cannot achieve environmental protection; it is not conducive to the temperature of the combustion air

[0005] This shows that above-mentioned existing air preheater obviously still has inconvenience and defect in structure and use, and urgently needs to be further improved

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

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