Scale inhibitor for oil refining technology process and preparation method thereof

A process and scale inhibitor technology, used in the petroleum industry, hydrocarbon oil treatment, treatment equipment corrosion/fouling inhibition, etc., can solve the problems of few types of scale inhibitors, pollution, poor effect, etc. Easy to use, good oil solubility

Active Publication Date: 2016-04-13
SHENZHEN GCD PETROLEUM ADDITIVE CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the current situation of few types of scale inhibitors, poor effect and serious pollution in my country's oil refining process, the present invention provides a composite oil refining scale inhibitor

Method used

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  • Scale inhibitor for oil refining technology process and preparation method thereof
  • Scale inhibitor for oil refining technology process and preparation method thereof
  • Scale inhibitor for oil refining technology process and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add dispersant cleaning agent, antioxidant, polymerization inhibitor, metal ion deactivator and film forming agent into the organic solvent in proportion, heat and stir, fully dissolve and mix evenly, cool to room temperature, and filter to obtain different types of scale inhibitors Sample, its active ingredient and mass percentage composition are as shown in table 1:

[0031] Table 1

[0032]

[0033]

[0034]

Embodiment 2

[0036] In order to test the use effect of the scale inhibitor of the present invention, the laboratory static and dynamic hydrogenation evaluation tests of the scale inhibitor were carried out respectively.

[0037] 1) Static evaluation test

[0038] Add 50g of blank or additive raw material oil into a 100ml autoclave, seal it and replace it with nitrogen for 3 times, heat it at 350°C for 10h, then extract it with heptane and dry it, and check the scale inhibition according to the amount of insoluble matter Antiscalant effect of the agent, the results are shown in Table 2:

[0039] Table 2 Static test data

[0040]

[0041] Note: 1) The dosage of antiscalant is 100μg / g;

[0042] 2) Scale inhibition rate = (change of colloid after dosing / change of blank colloid content) × 100%.

[0043] The evaluation results in Table 2 show that the scale inhibition effect of the self-made scale inhibitor No. 6 sample is better than that of other scale inhibitors. Adding 100ppm to the ra...

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Abstract

The invention relates to a scale inhibitor for the oil refining technology process. In order to provide an efficient environment-friendly scale inhibitor which is suitable for various oil refining technologies, the invention provides the scale inhibitor for the oil refining technology process. The scale inhibitor is characterized by being prepared from, by mass, 10%-40% of scattered detergent, 5%-30% of antioxygen, 5%-30% of polymerization inhibitor, 5%-15% of metal-ion passivator, 5%-20% of film-forming agent and 20%-70% of organic solvent, and the scale inhibitor is obtained by compounding all the substances. The scale inhibitor for the oil refining technology process has the advantages that the effect and the adaptability are strong, wherein the scattered detergent can scatter the scale inhibitor in the material, and the scale inhibitor is not prone to stick to and deposit on the surface of equipment; the stability is good, the scale inhibitor can still play a role under the high-temperature conditions such as heavy oil hydrogenation, therefore, polymerization and scaling of a hydrogenation system can be effectively inhibited, and long period operation of a device is guaranteed; elements of sulphur, phosphorus and the like are not contained, toxicity and undesirable odor do not exist, and pollution does not exist in the preparation and use process.

Description

technical field [0001] The invention belongs to a scale inhibitor for inhibiting scale formation of oil refining process equipment, in particular to a scale inhibitor used in a hydrogenation unit and a preparation method thereof. technical background [0002] In recent years, the nature of my country's crude oil has become increasingly heavy and inferior, and refineries along the river and coast have also blended a large amount of high-sulfur and high-carbon residual crude oil from the Middle East. Strict, increasing processing depth brings great difficulties to petroleum refining and petrochemical processing, such as residual oil hydrotreating, hydrocracking, gasoline and diesel hydrofinishing, crude oil distillation and heavy oil catalytic cracking, delayed coking, cracking The problem of coking and fouling of pipelines, heating furnace tubes, heat exchangers and other equipment in ethylene production equipment is becoming more and more serious, which reduces the heat exchan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G75/04
CPCC10G75/04
Inventor 严斌刘影叶世春熊靓
Owner SHENZHEN GCD PETROLEUM ADDITIVE CO
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