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Purification dispersant and oil slurry scale inhibitor containing purification dispersant

A clean dispersant and antiscalant technology, applied in the petroleum industry, organic chemistry, hydrocarbon oil treatment, etc., can solve the problem that it is difficult to achieve the ideal antiscaling effect by adding dosage of antiscalant, the oil slurry system can not achieve the effect of antiscaling, Increased chance of scaling and other problems, to achieve good cleaning and anti-scaling performance, wide range of use, increase the effect of flow rate

Active Publication Date: 2019-12-31
山东京博众诚清洁能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the oil slurry antiscalants on the market are divided into oil-soluble and water-soluble. The existing oil slurry antiscalants decompose at a low temperature, and generally start to decompose before 320°C. When the temperature of the oil slurry system rises, they cannot play a significant role. Good anti-scaling effect; at the same time, with the cracking of the oil slurry, the proportion of high-solid and high-asphaltene oil slurry increases, which puts more challenges on the effect of anti-scaling agent. It is still difficult to achieve the ideal anti-scaling agent by increasing the dosage of the current anti-scaling agent Effect: when the viscosity of the oil slurry is high, it is difficult to reduce the viscosity of the oil slurry by increasing the temperature, and the increase of the viscosity leads to a decrease in the flow rate and an increase in the probability of scaling. Scale inhibitors that can improve the scale inhibition effect of high-solid and high-asphaltene raw materials are required by the market

Method used

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  • Purification dispersant and oil slurry scale inhibitor containing purification dispersant
  • Purification dispersant and oil slurry scale inhibitor containing purification dispersant
  • Purification dispersant and oil slurry scale inhibitor containing purification dispersant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of brand-new cleansing and dispersing agent bisphenol type Mannich base, its structural formula is as follows:

[0037]

[0038] It uses polyisobutylene as raw material to prepare polyisobutylene bisphenol A intermediate, and then reacts it with diethylenetriamine and paraformaldehyde to obtain it. The specific preparation steps are as follows:

[0039] Add the boron trifluoride (catalyst) of the bisphenol A of 0.1mol, 40mL toluene and 0.015mol in the four-necked flask, agitator, condenser, separatory funnel and thermometer are installed on the four-necked flask; The active polyisobutene was dissolved in toluene, placed in a separatory funnel, fed with nitrogen to maintain normal pressure, and the reaction temperature was controlled at 80°C. The highly active polyisobutene in the separatory funnel was added drop by drop, and the reaction time was 5 hours. After the reaction was completed, statically After the catalyst is completely deposited on the bottom of the...

Embodiment 2

[0045] A kind of oil slurry antiscalant, its raw material composition comprises by weight:

[0046]

[0047] Wherein said cleaning and dispersing agent is bisphenol type Mannich base;

[0048] Described antioxidant is diisooctyl diphenylamine;

[0049] Described polymerization inhibitor is dodecylbenzenesulfonic acid;

[0050] Described viscosity reducer is propylene glycol polyoxyethylene polyoxypropylene ether;

[0051] The carrier dispersant is polypropylene glycol;

[0052] Described solvent oil is the mixture of aliphatic hydrocarbon base benzene such as benzene, toluene, xylene, mesitylene in any ratio;

[0053] Its preparation method is as follows:

[0054] A) adding the cleansing and dispersing agent into the mixed aromatic hydrocarbon solvent oil, and obtaining the mixed solution a after mixing;

[0055] B) adding dodecylbenzenesulfonic acid into the mixed solution a, and mixed to obtain the mixed solution b;

[0056] C) adding diisooctyl diphenylamine to the...

Embodiment 3

[0060] A kind of oil slurry antiscalant, its raw material composition comprises by weight:

[0061]

[0062] Wherein said cleaning and dispersing agent is bisphenol type Mannich base;

[0063] Described antioxidant is N, N'-di-sec-butyl-p-phenylenediamine;

[0064] Described polymerization inhibitor is polyisobutenyl succinimide;

[0065] Described viscosity reducer is fatty alcohol polyoxyethylene polyoxypropylene ether;

[0066] The carrier dispersant is polyethylene glycol;

[0067] The solvent oil is C15-C20 aliphatic hydrocarbon or cycloalkane;

[0068] Its preparation method is as follows:

[0069] A) adding the detergent and dispersant to the alkane solvent oil, and mixing to obtain the mixed liquid a;

[0070] B) Add polyisobutenyl succinimide to mixed solution a, and mix to obtain mixed solution b;

[0071] C) Add N,N'-di-sec-butyl-p-phenylenediamine in mixed solution b, and obtain mixed solution c after mixing;

[0072] D) Add polyethylene glycol to the mix...

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Abstract

The invention provides a purification dispersant, and an oil slurry scale inhibitor containing the purification dispersant and a preparation method thereof. The purification dispersant is a newly synthesized bisphenol type Mannich base. A polymerization inhibitor, an antioxidant, a carrier dispersant, a viscosity reducer and solvent oil are added to the purification dispersant so as to form the brand-new oil slurry scale inhibitor. The scale inhibitor is suitable for different types of raw oil, and especially has good scale inhibition effect on raw oil with poor properties, high solid content,high asphaltene content, high aromatic hydrocarbon content and high olefin content. The scale inhibitor is high in decomposition temperature and applicable in a wide temperature range, and maintainsgood scale inhibition effect when a tower bottom temperature is high; the scale inhibitor can reduce the viscosity of raw materials, increase the flow rate of system and decrease coking probability; and the addition amount of the scale inhibitor is small, and the addition amount of a normal product in the market is 30-200 ppm while the addition amount of the scale inhibitor is 10-20 ppm, so addition cost is reduced.

Description

technical field [0001] The invention relates to the field of oil slurry scale inhibition, in particular to a detergent dispersant and an oil slurry scale inhibitor containing the detergent dispersant. Background technique [0002] In recent years, with the heavy and inferior crude oil at home and abroad, coupled with the increasing promotion and popularization of residual oil catalytic cracking technology as a technology for deep processing of heavy oil and improving the economic efficiency of refineries, the problem of coking and fouling of catalytic cracking oil slurry increasingly severe and widespread. Coking and fouling in the oil slurry system will seriously affect the normal operation of the device. This coking and fouling substance reduces the heat transfer efficiency of the heat exchanger and increases the resistance in pipeline transportation, resulting in a decrease in the final heat exchange temperature of the oil slurry and raw materials, and the steam The amou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C215/56C10G75/04
CPCC07C215/56C10G75/04
Inventor 张超梁万根马雪菲崔卫华杨聪宋吻吻崔振杰靖培培
Owner 山东京博众诚清洁能源有限公司
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