Gas-driven mechanical atomization distributor

Abstract

The invention provides a gas-driven mechanical atomization distributor. According to the device, an air-core main shaft(3) is provided with a rotatable porous distributor(4), and then a liquid-phase corrosion inhibitor(11) in a liquid inlet pipe(7) is uniformly distributed in a pipeline(8) and the inner wall of the pipeline under the action of centrifugal force through the rotary porous distributor, the high-efficiency contact reaction of a gas-phase raw material medium and the liquid-phase corrosion inhibitor is effectively ensured, corrosion of corrosive substances to equipment and the pipelines is greatly reduced, meanwhile, the liquid-phase corrosion inhibitor is uniformly distributed on the circumference of the pipeline, an effective corrosion inhibitor protection layer can be formedon the inner wall of the pipeline, the use efficiency of the corrosion inhibitor is improved, the use amount of the corrosion inhibitor is reduced, and corrosion of corrosive substances in the gas-phase raw material medium to equipment and the pipelines is reduced, so that long-period safe operation of equipment is guaranteed, the device has the advantages of being simple in structure, convenientto use and the like, and is suitable for wide-range popularization and application.

Description

technical field [0001] The invention relates to an atomizing distributor, in particular to a gas-driven mechanical atomizing distributor. Background technique [0002] It is known that crude oil is a viscous oily liquid with a special smell. It is a mixture of various liquid hydrocarbons such as alkanes, cycloalkanes, aromatics and olefins. Its main components are carbon and hydrogen, as well as sulfur, chlorine, oxygen, nitrogen, etc. element. In the process of crude oil refining, hydrogen sulfide, sulfuric acid, hydrochloric acid, ammonia, cyanide and other corrosive substances will be produced due to heating and other reasons, and these corrosive substances will cause different degrees of corrosion to the equipment and pipelines of the refining unit. At the same time, with the gradual depletion of fossil energy, high-quality crude oil is gradually decreasing, and low-quality crude oil with high sulfur value and high acid value is continuously developed and applied. Infe...

AI Technical Summary

Problems solved by technology

Most of the existing injection methods are straight pipe direct injection. The corrosion inhibitor injected in this form flows directly along the lower part of the inner wall of the pipe, and cannot fully contact with the corrosive substances in the gas phase medium in the pipe, and a neutralization reaction occurs, which cannot achieve anti-corrosion. The purpose of the craft

If this injection method is used for a long time, the injected corrosion inhibitor cannot effectively prevent corrosion, and thus the accident risk of corrosion leakage of equipment or pipelines cannot be avoided, and it also causes waste of corrosion inhibitor

Furthermore, since the corrosion inhibitor cannot be uniformly dispersed into the pipeline, an effective anti-corrosion protective film cannot be formed on the inner wall of the pipeline. In the initial stage of the device's start-up, that is, the pre-film period of corrosion inhibitor injection, the desired corrosion inhibition cannot be formed. protective film etc.

[0005] With the continuous deepening of the research on corrosion inhibitors, new corrosion inhibitors with small dosage and high anti-corrosion efficiency have been widely used. Compared with the corrosion inhibitors used in the past, the injection flow rate of the new corrosion inhibitors is very small (5-20 liters / hour), for this kind of corrosion inhibitor with a small flow rate, if the conventional straight pipe is still used for direct injection in the injection method, the injected corrosion inhibitor will drop below the straight pipe at the injection point on the inner wall of the pipeline , the technological purpose of neutralizing the corrosion inhibitor and the corrosive substances in the gaseous raw material medium cannot be achieved, and a protective film of the anti-corrosion medium cannot be formed on the inner wall of the pipeline, which greatly increases the cost of use, etc.

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