Heat exchange tube internally provided with spiral fins and application thereof

Abstract

The invention relates to a heat exchange tube internally provided with spiral fins and application thereof. The heat exchange tube internally provided with the spiral fins comprises a heat exchange tube (1) and is characterized in that the heat exchange tube (1) is internally provided with the spiral fins (2) which are spiral; and the spiral fins (2) are distributed in the form of one or more sections along the axial direction at the inner side in the heat exchange tube (1). Meanwhile, the heat exchange tube internally provided with the spiral fins can be arranged in a radiation section furnace tube of an ethylene cracking furnace and can also be arranged in other heat exchangers, such as a shell-and-tube heat exchanger. The heat exchange tube achieves the purposes of increasing the heat transfer efficiency, strengthening the heat transfer effect, reducing coking, reducing the capacity consumption and increasing the life cycle of the equipment. Meanwhile, the spiral design also reduces the washing and abrading phenomena of high-speed fluid in the heat exchange tube to the interior of the tube body, thereby the heat transfer effect is further strengthened.

Description

A heat exchange tube with built-in spiral fins and its application technical field The invention relates to a heat exchange tube and its application. More specifically, the invention relates to a heat exchange tube with built-in spiral fins and its application in an enhanced heat transfer furnace tube of an ethylene cracking furnace, which belongs to the field of energy and chemical industry. Background technique Ethylene cracking furnace is an important equipment in petrochemical industry, mainly used for heating cracking raw materials to realize cracking reaction. The cracking reaction of high temperature, short residence time and low hydrocarbon partial pressure is the key to improving the cracking selectivity and cracking depth, and then improving the yield of key chemical products such as ethylene and propylene. Therefore, the cracking reaction process requires a lot of heat, making cracking Furnace is a major energy consumer of ethylene plant, and its energy consumpt...

AI Technical Summary

Problems solved by technology

In order to solve the existing problems in the past, the purpose of the present invention is to provide a heat exchange tube with built-in spiral fins to overcome the low heat transfer efficiency of the traditional ethylene crackin

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