Steam thermal cracking simulation experiment device and process

Abstract

The invention provides a steam thermal cracking simulation experiment device and process. The steam thermal cracking simulation experiment device comprises a raw material feeding device, a cracking furnace and a product quenching recovery device which are sequentially connected; the product quenching recovery device comprises a direct quenching system and a circulating quenching recovery system; the circulating quenching recovery system comprises a cracked gas circulating quenching loop composed of a gas-phase mixer, an indirect quencher, a cyclone separator, a gas circulating pump and a cooler; the gas-phase mixer is connected to a cracking furnace pipe discharging hole in a sealing way; the direct quenching system is used for vertically inserting a quenching water injection pipe in the cracking furnace pipe discharging hole through the center inside the gas-phase mixer; a water injection hole is formed in the end of the inserted end; and quenching water is injected into a cracking furnace pipe by the water injection hole. The steam thermal cracking simulation experiment device has the advantages that high-temperature cracked gas is directly quenched twice after being sequentiallyinjected with the quenching water and a circulating gas product, so that the cooling efficiency is high, the injection quantity of the quenching water is small, secondary reaction of the cracked gascan be effectively avoided, and the accuracy of a simulation effect of the cracking furnace is improved.

Description

technical field [0001] The invention relates to a steam thermal cracking simulation experiment device and a process, in particular to a steam thermal cracking simulation experiment device with a novel product quenching recovery device and a process for using the device to conduct a simulation cracking experiment. Background technique [0002] The trienes (ethylene, propylene, butadiene) and triphenyls (benzene, toluene, xylene) produced by the ethylene plant are the basic raw materials of the petrochemical industry and play a pivotal role in the petrochemical industry. At the same time, the level of ethylene production is It is an important symbol to measure the development level of a country's petrochemical industry. According to statistics, about 95% of ethylene and more than 50% of propylene in the world are produced by steam pyrolysis. At present, it has become one of the development trends of ethylene production to continuously improve the operation level of ethylene pl...

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