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Hydrocarbon oil demetalization agent and method for hydrocarbon oil demetalization

A demetallization agent and hydrocarbon oil technology, applied in the field of hydrocarbon oil demetallization agent and its hydrocarbon oil demetallization, to achieve high removal rate

Active Publication Date: 2016-07-06
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to achieve the above object, the present invention provides a hydrocarbon oil demetallization agent and a method for hydrocarbon oil demetallization to solve the defects of the existing demetallization agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Hydrocarbon oil: calcium content is 230 μg / g, magnesium content is 2.87 μg / g, iron content is 14.5 μg / g; demetallization agent: pyruvic acid, its amount is 2.0 of the total amount of calcium, magnesium and iron in hydrocarbon oil times; demulsifier: KR-40, 200μg / g of hydrocarbon oil weight; electric desalination water injection: 7%; fully mix demetallizer, demulsifier, electric desalination water injection and hydrocarbon oil at 90°C with emulsification shear , placed in an electric desalination device, dehydration under the conditions of 120°C desalination temperature, 600v / cm weak electric field for 10min, and 1000v / cm strong electric field for 20min, after oil and water separation, analyze the purified oil metal content / demetallization rate, calcium content / decalcification Rate: 45.8μg / g / 80.1%, magnesium content / magnesium removal rate: 1.15μg / g / 60.0%, iron content / iron removal rate: 5.7μg / g / 60.5%.

Embodiment 2

[0032] Hydrocarbon oil: calcium content is 38.5 μg / g, magnesium content is 1.85 μg / g, iron content is 4.3 μg / g; demetallization agent: pyruvic acid, its amount is the total amount of calcium, magnesium and iron in hydrocarbon oil 5.0 times; demulsifier: OX-2, 100μg / g of hydrocarbon oil weight. ; Electric desalting water injection: 10%; Mix the demetallizer, demulsifier, electric desalting water injection and hydrocarbon oil at 80°C with an emulsifying shearer, put them in the electric desalting device, and set the desalting temperature at 135°C, 300v / Dehydration under the condition of cm weak electric field for 5 minutes and 900v / cm strong electric field for 30 minutes, after oil and water separation, analyze the purified oil for metal content / demetallization rate, calcium content / decalcification rate: 4.6μg / g / 88.1%, magnesium content / magnesium removal rate : 0.57μg / g / 69.2%, iron content / removal rate: 1.44μg / g / 66.5%.

Embodiment 3

[0034] Hydrocarbon oil: calcium content is 721 μg / g, magnesium content is 5.25 μg / g, iron content is 16.7 μg / g; demetallization agent: acetoacetic acid, its amount is 8.0 of the total amount of calcium, magnesium and iron in hydrocarbon oil times; demulsifier: OX-2, 150μg / g. ; Electric desalting water injection: 7%; Mix the metal removal agent, demulsifier, electric desalting water injection and hydrocarbon oil at 60°C with an emulsifying shearer, put them in the electric desalting device, and set the desalting temperature at 130°C, 500v / Dehydration under the condition of weak electric field of cm for 8 minutes and strong electric field of 1500v / cm for 10 minutes. After oil-water separation, analyze the purified oil for metal content / demetallization rate, calcium content / decalcification rate: 87.2μg / g / 87.9%, magnesium content / magnesium removal rate : 1.66μg / g / 68.3%, iron content / removal rate: 5.5μg / g / 67.1%.

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Abstract

The invention relates to a hydrocarbon oil demetalization agent and a method for hydrocarbon oil demetalization. The hydrocarbon oil demetalization agent is a keto acid, wherein the keto acid is any of alpha-keto acid, beta-keto acid and gamma-keto acid, and the alpha-keto acid is one of pyruvic acid, 2-ketobutyric acid, phenylpyruvic acid and benzoyl formic acid; the beta-keto acid is acetoacetic acid; and the gamma-keto acid is 4-ketovaleric acid. The method comprises the steps of carrying out mixed contact on hydrocarbon oil, water, the keto acid, which serves as the demetalization agent, and a demulsifier, and then, carrying out electric desalting, so as to achieve oil-water separation and remove metals from the hydrocarbon oil. A molecule of the demetalization agent disclosed by the invention contains a difunctional group, can be in chelation with the metals and can also be in complexation with the metals, so that the demetalization agent has a high removal ratio to the metals in the hydrocarbon oil; according to the demetalization agent, the acidity is between the acidity of organic acids and the acidity of inorganic acids, the corrosiveness is lower than that of the inorganic acids, and the demetalization rate is higher than that of the organic acids; and meanwhile, the demetalization agent is free of elements such as phosphorus, sulfur and nitrogen and thus cannot cause adverse effects on subsequent processing.

Description

technical field [0001] The invention relates to a hydrocarbon oil refining preparation, in particular to a hydrocarbon oil demetallization agent and a hydrocarbon oil demetallization method thereof. Background technique [0002] With the advancement of crude oil extraction technology and the deepening of crude oil extraction, a large amount of crude oil with high metal content is continuously extracted. The existence of high metal pollutants in crude oil largely limits the further improvement of processing depth. In the hydrocracking process, the metal will quickly deactivate or foul the catalyst, and it is easy to deposit between the catalyst particles, especially at the top of the fixed bed, causing the pressure drop of the hydrogenation reactor to rise rapidly, causing the device to fail operation; in the catalytic cracking process, metals are deposited on the surface of the catalyst, which limits the contact between hydrocarbon molecules and the catalyst, and even poison...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/02C10G33/04C10G32/02
Inventor 吴梅马忠庭韩云于曙艳代敏
Owner PETROCHINA CO LTD
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