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Metal remover

A demetallization agent and a one-element technology, which is applied in the field of demetallization agents for removing metal impurities from hydrocarbon raw materials, can solve problems such as inability to completely remove iron elements in hydrocarbon raw materials, and achieve the effects of low cost, readily available raw materials and simple use.

Active Publication Date: 2007-06-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcoming that the demetallization agent in the prior art cannot completely remove the iron element in the hydrocarbon raw material, and provide a kind of demetallization agent that can completely remove the iron element in the hydrocarbon raw material

Method used

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  • Metal remover

Examples

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preparation example Construction

[0020] The preparation method of the demetallization agent includes uniformly mixing the above-mentioned organic phosphonic acid and organic carboxylic acid, and the mixing may or may not include uniformly mixing the solubilizer with the above-mentioned organic phosphonic acid and organic carboxylic acid. The way of mixing is well known to those skilled in the art, and will not be repeated here.

[0021] The demetallization agent provided by the invention can demetallize various hydrocarbon raw materials containing metal impurities. The hydrocarbon raw material can be mineral oil and various fractions thereof, such as one of crude oil, atmospheric residue, vacuum residue, deasphalted oil, shale oil, lubricating oil, diesel oil, gasoline, and coal liquefied oil. species or several. The total content of metal impurities in the hydrocarbon feedstock is preferably 1-300 μg / g. The metal impurities may be one or more of iron, calcium, magnesium, zinc and sodium.

[0022] The deme...

Embodiment 1

[0029] This example is used to illustrate the preparation of the demetallization agent provided by the present invention.

[0030] Mix 35 parts by weight of citric acid, 10 parts by weight of oxalic acid, 10 parts by weight of formic acid, 15 parts by weight of maleic acid, and 30 parts by weight of hydroxyethylidene diphosphonic acid to obtain a metal removal agent containing organic carboxylic acid and organic phosphonic acid.

Embodiment 2

[0032] This example is used to illustrate the preparation of the demetallization agent provided by the present invention.

[0033] 20 parts by weight of citric acid, 10 parts by weight of oxalic acid, 10 parts by weight of acetic acid, 20 parts by weight of ethanol, 30 parts by weight of hydroxyethylidene diphosphonic acid, and 10 parts by weight of 2-hydroxyphosphinoacetic acid are mixed uniformly to obtain organic carboxylic acid, Demetallizer for organic phosphonic acids and solubilizers.

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Abstract

A metal remover consists of organic carboxylic acid 30-99wt% and organic phosphoric acid 1-70wt%. It can eliminate iron element and various metal elements. It doesn't consist of nitrogen, sulfur, chlorine and metal elements so it's cheap, simple, convenient and no after treatment harm.

Description

technical field [0001] The invention relates to a demetallization agent, in particular to a demetallization agent for removing metal impurities from hydrocarbon raw materials. Background technique [0002] Metal impurities in hydrocarbon feedstock oil have serious harm to the use and subsequent processing of hydrocarbon oil. When hydrocarbon oil containing metal impurities is used as fuel, it is easy to cause fouling in the combustion furnace, which affects heat transfer and can cause thermal corrosion. When these hydrocarbon oils are used as raw materials for catalytic cracking and hydrogenation, metal elements such as calcium, iron, sodium, magnesium, nickel, and vanadium will cause poisoning and fouling of the catalyst, reduce or completely inactivate the catalyst activity, and affect the normal operation of the device. Increased operating costs. When used as a coking raw material, the ash content in petroleum coke is increased and the grade of petroleum coke is reduced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G17/04
Inventor 李本高王振宇罗咏涛于丽
Owner CHINA PETROLEUM & CHEM CORP
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