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

A catalyst and thermal catalysis technology, applied in catalytic cracking, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., which can solve the problems of ineffective on-site application, poor crude oil contact, and high concentration of use , to achieve the effect of simple production, reducing viscosity and improving the quality of heavy oil

Active Publication Date: 2011-04-20
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 5gC 12 Carboxylic acid was mixed with 2.0g ethylenediamine, and the oil bath was heated to 180°C to react for 2h. The temperature was lowered to 90° C., and an aqueous solution containing 9.5 g of sodium chloroacetate was added. After stirring for 40 min, 3.8 g of NaOH was added, and the reaction was continued at 93° C. for 12 h. Add 8.0gNiCl 2 .6H 2 O and 150ml of toluene, reflux and divide water for 3h and then filter, and the filtrate is decompressed and precipitated to obtain the catalyst. Industrial production can be scaled up with industrial-grade raw materials.

[0014] Apply this product to Leng 42-Ping 2 heavy oil in Liaohe Oilfield, take an appropriate amount of catalyst, heavy oil and water and place it in a high-pressure reactor, and a hydrothermal catalytic cracking reaction will occur at 170°C to 200°C, where the quality of the entire system is taken as the benchmark , the amount of catalyst is 0.03-0.1w%, and the amount of water added is more than 25...

Embodiment 2

[0016] 3G 12 Carboxylic acid was mixed with 1.8g of ethylenediamine, and the oil bath was heated to 160°C to react for 3h. The temperature was lowered to 95° C., and an aqueous solution containing 7.5 g of sodium chloroacetate was added. After stirring for 45 minutes, 2.0 g of NaOH was added, and the reaction was continued at 95° C. for 11 hours. Add 6.1gNiCl 2 .6H 2 O and 150ml of toluene, reflux and divide water for 3h and then filter, and the filtrate is decompressed and precipitated to obtain the catalyst. Industrial production can be scaled up with industrial-grade raw materials.

[0017] Apply this product to Du 813-39-36 heavy oil in Liaohe Oilfield, take an appropriate amount of catalyst, heavy oil and water and place it in a high-pressure reactor, and a hydrothermal catalytic cracking reaction will occur at 170°C to 200°C, where the mass of the entire system is Standard, the amount of catalyst is 0.03-0.1w%, and the amount of water added is more than 25%. After t...

Embodiment 3

[0019] 4G 16 Carboxylic acid was mixed with 1.7g of ethylenediamine, and the oil bath was heated to 180°C to react for 2.5h. The temperature was lowered to 90° C., and an aqueous solution containing 6.5 g of sodium chloroacetate was added. After stirring for 46 min, 3.2 g of NaOH was added, and the reaction was continued at 90° C. for 12 h. Add 5.5.0gNiCl 2 .6H 2 O and 170ml of toluene, reflux and divide water for 4h and then filter, and the filtrate is decompressed and precipitated to obtain the catalyst. Industrial production can be scaled up with industrial-grade raw materials.

[0020] Apply this product to G540 heavy oil in Henan Oilfield, take an appropriate amount of catalyst, heavy oil and water, and place it in a high-pressure reactor, and a hydrothermal catalytic cracking reaction will occur at 150°C to 200°C. The amount of catalyst used is 0.03 ~0.1w%, the amount of water added is greater than 25%, the viscosity reduction rate of the heavy oil after the reactio...

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PUM

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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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Claims

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Application Information

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Owner PETROCHINA CO LTD
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