Ethylene cracking and cleaning agent and preparation method thereof

Abstract

The invention discloses an ethylene cracking and cleaning agent and a preparation method thereof. The ethylene cracking and cleaning agent is prepared from Tween 80, citric acid, sodium persulfate, potassium permanganate and secondary deionized water, wherein the percentage by weight of each component is as follows: the Tween 80 accounts for 15-25%, the citric acid accounts for 0.4-0.6%, the sodium persulfate accounts for 15-25%, cinnamaldehyde accounts for 4-6%, the potassium permanganate accounts for 1-2%, and the secondary deionized water accounts for 40-50%. The ethylene cracking and cleaning agent disclosed by the invention has the beneficial effects of high efficiency, no toxicity, no corrosion, no secondary pollution and fast passivation action against ferrous sulfide, and can effectively prevent spontaneous combustion of the ferrous sulfide; the using method is simple, large process adjustment is not required, and only small alteration is needed on the basis of an existing device; the ethylene cracking and cleaning time is 8-10 hours, more than 90% of the ferrous sulfide can be removed, and the shutdown time of the device is correspondingly reduced; a protective film can be formed on the surface of metal after cleaning, so that the surface of the metal can be effectively prevented from being further corroded; and a mixed solution after being treated by the cleaning agent can be directly discharged without the impact on a sewage treatment field.

Description

technical field [0001] The invention relates to the technical field of cleaning agents, in particular to an ethylene cracking cleaning agent and a preparation method thereof. Background technique [0002] With the progress of the overall technology of China's ethylene cracking unit, the scale of my country's ethylene cracking unit has been continuously expanded, and the start-up period has been continuously extended. But at the same time, it also puts forward higher requirements for the safety of the device during shutdown and maintenance. In particular, how to prevent the spontaneous combustion of ferrous sulfide in the components and fillers in the quenching oil tower and the quenching water tower without prolonging the downtime for maintenance, so as to achieve the purpose of protecting equipment and eliminating potential safety hazards, has become our shutdown maintenance. a major problem. SUMMARY OF THE INVENTION [0003] In order to overcome the above-mentioned def...

AI Technical Summary

Problems solved by technology

But at the same time, it also puts forward higher requirements for the safety of the shutdown and maintenance of the device.