Filling method of hydrocarbon oil catalytic cracking additive

Abstract

The invention discloses a filling method of a hydrocarbon oil catalytic cracking additive, which is used for solving the problems that hydrocarbon oil yield is lowered, coke yield is increased, and the like as an existing catalytic cracking material cannot be completely atomized into tiny oil drops. According to the filling method, an additive and deionized water are mixed in a weight ratio of 1:25-1:500, preferably 1:100-1:200; the mixture is heated until being overheated and gasified, and mixed with atomized vapor in terms of 200mu g / g-5000mu g / g, preferably 800mu g / g-2000mu g / g in a spray nozzle mixing chamber so as to enter a lifting tube spray nozzle based on total weight of atomized vapor and the additive.

Description

technical field [0001] The invention relates to the field of catalytic cracking of hydrocarbon oil in the absence of hydrogen, in particular to a method for filling additives for catalytic cracking of hydrocarbon oil. Background technique [0002] As the main processing unit in the oil refining field, fluidized catalytic cracking, a large proportion of mixed refining residue or full refining residue is a powerful means to increase the profit per ton of crude oil processing. The continuous weighting of the conventional catalytic cracking feed fraction makes it difficult for the feed to be completely atomized into tiny oil droplets after the nozzle, and the low molecular hydrocarbons and weak The polar macromolecular hydrocarbons are difficult to be completely released, and cannot contact the catalyst to participate in the catalytic cracking reaction, which will lead to a decrease in the liquid yield of the catalytic cracking unit and an increase in the coke yield. [0003] O...

AI Technical Summary

Problems solved by technology

[0005] Usually, the additives are directly mixed with the raw material oil, but the actual application effect is not ideal, and the amount of additives is large

A small amount of enhancer is added to the raw oil pipeline, because it cannot be fully and uniformly mixed, the dispersion effect is not ideal, and satisfactory use results cannot be obtained

There are also many problems in the use of emulsified feed for catalytic cracking. First, before the raw oil enters the nozzle of the riser reactor, it must first be mixed and emulsified with oil and water. It needs to be stirred and mixed at low temperature and high speed to form Emulsifying raw materials, this not only requires more emulsifying equipment, but also the emulsifying effect, stability and uniformity of the emulsified oil are difficult to guarantee; second, water droplets will inevitably gather during the flow of the emulsified mixture in the feed pipeline of the device, forming large and small Inhomogeneous, unevenly dispersed water droplets enter the riser reactor to vaporize instantly, and the volume expands sharply by a thousand times, which may cause system pressure fluctuations or affect the fluidization state of the catalyst, making the operation of the device unstable

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