Technology development and application processing method for improving yield of hydrogen and ethylene

Abstract

The invention relates to a technology development and application processing method for improving the yield of hydrogen and ethylene, and the method comprises the following steps: S1, a cyclone separator is added in a reaction settler to separate oil gas and a catalyst in a higher precision manner so as to avoid loss of the catalyst; s2, a precooler is additionally arranged at the pre-lifting section of a lifting pipe, and the temperature is reduced to 660 + / -2 DEG C from 690 DEG C to provide operating conditions with a high catalyst-oil ratio; s3, an absorption tower is connected with a pneumatic press, and gases are enriched through an outlet of the pneumatic press. By upgrading device, improving cyclone separation effect, reducing catalyst loss and increasing the precooler, the temperature of the reaction catalyst is reduced to 660 + / -2 DEG C, so that the catalyst-oil ratio is increased, raw materials are fully reacted, and reaction operation parameters are optimized, wherein the reaction temperature is controlled to be 550 + / -2 DEG C; wherein the regeneration temperature is controlled to be 695 + / -2 DEG C; the differential pressure of the two devices is controlled to be 10KPA + / -3KPA; wherein the amount of atomized steam is controlled to be 8T / H; the flow of the pre-lifting dry gas is controlled to be 1200 Nm < 3 > / h, and conditions are created for the hydrogen and ethylene.

Description

technical field [0001] The invention relates to the field of chemical catalytic cracking, in particular to a technical development and application process for increasing the yield of hydrogen and ethylene. Background technique [0002] There is a certain proportion of hydrogen and ethylene in the dry gas composition of the catalytic cracking unit, but it cannot meet the needs of the unit. With the increasingly stringent environmental protection requirements of the country, a hydrogenation unit is equipped, and the demand for hydrogen increases rapidly. In recent years, the styrene market has been booming, and the demand for ethylene has increased, but the yields of hydrogen and ethylene are relatively low. Contents of the invention [0003] The purpose of the present invention is to solve the defects in the prior art, and provide a technology development and application process for improving the yield of hydrogen and ethylene. [0004] In order to achieve the above object...

AI Technical Summary

Problems solved by technology

[0002] There is a certain proportion of hydrogen and ethylene in the dry gas composition of the catalytic cracking unit, but it cannot meet the needs of the unit. With the increasingly stringent environmental protection requirements of the country, a hydrogenation unit is equipped, and the demand for hydrogen increases rapidly.

In recent years, the styrene market has been booming, and the demand for ethylene has increased, but the yields of hydrogen and ethylene are relatively low

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