Complex catalyst for viscosity reduction of thick oil by hydrothermal catalytic cracking and preparation and application thereof

Abstract

The invention relates to a complex catalyst for viscosity reduction of thick oil by hydrothermal catalytic cracking and application thereof. The complex catalyst is prepared by the following steps of: 1) selecting raw materials: selecting 2 to 3 mass parts of C12-C18 aliphatic carboxylic acid, 1 to 2 mass parts of ethylene dimine, 3 to 5 mass parts of sodium fluoroacetate, 1 to 2 mass parts of sodium hydroxide, 3 to 5 mass parts of nickel chloride hydrate and 140 to 180 mass parts of toluene; and 2) mixing the C12-C18 carboxylic acid and ethylene dimine, then heating to 160 to 180 DEG C in an oil bath and reacting for 2 to 3 hours, cooling to 90 to 95 DEG C, adding sodium chloroacetate-containing aqueous solution, stirring, reacting for 40 to 50 minutes and then adding NaOH, continuously reacting for 10 to 13 hours at the temperature of between 90 and 100 DEG C, finally adding the NiCl2.6H2O and the toluene, refluxing and splitting water for 3 to 5 hours and filtering, and performing reduced pressure desolvation on the filtrate to obtain the catalyst, wherein after the reaction is finished, the viscosity reduction rate of the thick oil reaches over 90 percent, and 9 to 15 percent of heavy component is cracked into a light component.

Description

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AI Technical Summary

Benefits of technology

The technical effects described by this inventor include that it provides an improved method called liquid phase hydrocracking or fluidized bed reactor technology with better efficiency than existing methods such as solvent extraction processes. It also reduces the amount of residue left behind after use without causing environmental concerns due its low operating temperatures compared to other technologies like thermal treatment techniques.

Problems solved by technology

Technological Problem addressed in this patents relates to developing an improved type called hydrocracking (HCR) viscosifier used during refining processes such as thermal cracking operations. Current methods involve adding various chemical agents like acrolein, naptha solvents, amines, etc., resulting in increased costs due to higher temperatures required while still having limited effectiveness at reducing specific properties associated with heavy oils.