Spray nozzle for catalytic cracking and application

Abstract

The invention relates to a spray nozzle for catalytic cracking and an application. The spray nozzle can simultaneously spray three raw materials and comprises a hydrocarbon oil I outer sleeve pipe, ahydrocarbon oil I inner sleeve pipe, a hydrocarbon oil I outer spray head, a hydrocarbon oil I inner spray head, a steam chamber, a hydrocarbon oil I and steam mixing chamber, a hydrocarbon oil II spray head, a hydrocarbon oil III spray head, a hydrocarbon oil II semi-circular atomizing chamber and a hydrocarbon oil III semicircular atomizing chamber. The spray nozzle can be used in a catalytic cracking lift pipe device which successively comprises a light hydrocarbon reaction zone I, a heavy hydrocarbon reaction zone and a light hydrocarbon reaction zone II from bottom to top along the axis of a reactor. According to the invention, through arrangement of the hydrocarbon oil II semi-circular atomizing chamber and the hydrocarbon oil III semi-circular atomizing chamber on the spray nozzle,the spray nozzle provided by the invention can simultaneously spray three raw materials, and can be used for experimental study of simultaneous contact and reaction of different catalytic raw materials with a catalyst;; and light hydrocarbons sprayed by the hydrocarbon oil II spray head and the hydrocarbon oil III spray head preferentially contact with the catalyst for a reaction to generate a large amount of carbonium ions, so conversion of heavy hydrocarbons is accelerated, and the spray nozzle provided by the invention has the characteristic of increasing the yield of gasoline.

Description

technical field [0001] The invention relates to a catalytic cracking conversion device for petroleum hydrocarbons, more specifically, to a catalytic cracking nozzle and its application. Background technique [0002] As the main light oil production process in the oil refining industry, catalytic cracking has attracted extensive attention from major research and development institutions at home and abroad because of its wide applicability and relatively low processing cost. Catalytic cracking provides 75% of gasoline components in my country's commercial gasoline pool, and plays a pivotal role in refineries. In the process of catalytic cracking process and catalyst research and development, the catalytic cracking test device is used in the screening of catalytic cracking catalyst formula, the investigation of catalytic raw material cracking performance and product properties, the evaluation of catalytic cracking catalyst, the optimization and simulation of reaction process co...

AI Technical Summary

Problems solved by technology

When the catalytic cracking riser test device is used to simulate the blending of heavy diesel oil in industrial catalytic cracking units, because the existing feed nozzle can only spray out one kind of catalytic cracking raw material, it is impossible to simulate the contact and reaction of various heavy diesel oils with the catalyst

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