High temperature and high dusty burner gas quencher

Abstract

The invention provides a high temperature and high dusty burner gas quencher which relates to a novel heat exchanger and is an important device for recovering afterheat of high temperature and high dusty burner gas from various industrial stoves. The body structure of the quencher includes a double-sleeve water / steam natural circulation primary cooling structure and a tube casing air secondary cooling structure, wherein double sleeves are respectively connected with two opposite elliptic tube plates to form a waist-shaped collecting tube box together with expansion sections, integral enhanced rings, inner linings and the like. A layer of cobalt fire-resistant casting materials is covered on the elliptic tube plates connected with inner tubes, and the inner tubes of the double sleeves are provided with fire and abrasion resistant inner lining sleeves on tube ends. The body of the quencher is connected with steam pockets through an ascending tube and a descending tube to form a water / steam natural circulation system.

Description

Technical field [0001] The invention relates to a high-temperature furnace gas waste heat recovery device for heating furnaces in petroleum, chemical, building materials and other industries. It is especially suitable for the quench cooler of various high temperature cracking furnaces and high dust furnace gas phase matching, specifically a high temperature and high dust furnace gas quencher that uses high efficiency heat exchanger to realize waste heat recovery. The invention is not only applicable to carbon black cracking furnaces, but also applicable to furnace gas waste heat recovery systems of various high temperature and high dust kilns. Background technique [0002] In ethylene cracking plants, waste heat boilers are commonly used to recycle the waste heat of high-temperature furnace gas generated during the cracking process of the cracking furnace to reduce costs, while meeting the temperature requirements of the next process device and reducing its environmental pollutio...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the serious damage caused by the huge temperature difference stress on the tube plate caused by the high temperature thermal expansion of the existing waste heat boiler heat exchange tube, and the special physical characteristics of the high-dust-containing furnace gas cause the heat exchange tube to be blocked, so that the heat exchange tube A kind of high-temperature and high-dust furnace gas quencher not only can work normally at ultra-high temperature, but also has an online pulse descaling supporting system, which is designed to prevent parking accidents caused by uneven heat and other reasons.

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