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Oil demetalization agent as well as preparation method and application thereof

A technology of metal removal agent and oil, which is applied in the field of oil metal removal agent and its preparation, can solve the problems of high cost, equipment corrosion, and unstable removal effect, so as to avoid corrosion, reduce metal content, and improve network quality. combined ability effect

Active Publication Date: 2018-10-26
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical demetallization has the advantages of low cost and easy operation, but there are problems such as unstable removal effect, high cost, and corrosion of equipment

Method used

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  • Oil demetalization agent as well as preparation method and application thereof
  • Oil demetalization agent as well as preparation method and application thereof
  • Oil demetalization agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An oil demetallization agent, which is composed of the following raw materials in weight percentage: 20% of N-methyl-2-pyrrolidone, 5% of ethylene glycol diethyl ether diamine tetraacetic acid, N-(2-hydroxyethyl) ethylene glycol Amine-N,N',N'-triacetic acid 15%, ethylenediamine 10%, methanol 20%, water 30%;

[0027] The preparation method of the oil demetallization agent: N-methyl-2-pyrrolidone, ethylene glycol diethyl ether diamine tetraacetic acid, N-(2-hydroxyethyl) ethylenediamine-N,N',N '-triacetic acid, ethylenediamine, methanol and water are mixed and stirred;

[0028] To evaluate the effect of the demetallizer in the laboratory, when adding 100mg / kg of demetallizer, add 0.01g of demetallizer per 100g of crude oil, the weighing accuracy is low, so it is configured as a 1% mass concentration of demetallizer aqueous solution , added to the oil, the weighing accuracy is high.

[0029] Evaluation of demetallization effect:

[0030] The oil tested is 92# gasoline, ...

Embodiment 2

[0038] An oil demetallization agent, which is composed of the following raw materials in weight percentage: 1% of N-methyl-2-pyrrolidone, 20% of ethylene glycol diethyl ether diamine tetraacetic acid, N-(2-hydroxyethyl) ethylene glycol Amine-N,N',N'-triacetic acid 10%, ethylenediamine 20%, methanol 20%, water 29%;

[0039] Preparation method is with embodiment 1;

[0040] The evaluation of demetallization effect is the same as embodiment 1;

[0041] The oil tested is the crude oil in northern Shaanxi, and the original iron, calcium, and magnesium contained in the crude oil used are 41.4mg / kg, 29.2mg / kg, and 13.5mg / kg respectively; the test results are shown in Table 2;

[0042] Table 2 Metal removal efficiency in crude oil

[0043]

Embodiment 3

[0045] An oil demetallization agent, composed of the following raw materials in weight percentage: 15% of N-methyl-2-pyrrolidone, 20% of ethylene glycol diethyl ether diamine tetraacetic acid, N-(2-hydroxyethyl) Amine-N,N',N'-triacetic acid 5%, ethylenediamine 15%, methanol 20%, water 25%;

[0046] Preparation method is with embodiment 1;

[0047] The evaluation of demetallization effect is the same as embodiment 1;

[0048] The oil tested was diesel oil, and the original iron, calcium, and magnesium contained in the diesel oil used were 9.1mg / kg, 2.2mg / kg, and 1.9mg / kg respectively; the test results are shown in Table 3;

[0049] Table 3 Metal removal efficiency in diesel

[0050]

[0051] Remarks: / means no detection, because the detection result has reached more than 99% when the content is low, so no further detection.

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Abstract

The invention provides an oil demetalization agent. The oil demetalization agent is prepared from the following raw materials in percentage by weight: 1 to 20 percent of N-methyl-2-pyrrolidinone, 1 to20 percent of glycol-bis-(2-aminoethylether)-N,N,N',N'-tetraacetic acid, 1 to 15 percent of N-(2-hydroxyethyl)-ethylenediamine-N,N',N'-triacetic acid, 1 to 20 percent of ethylenediamine, 1 to 20 percent of methanol and 5 to 30 percent of water. Meanwhile, the invention also provides a preparation method and application of the oil demetalization agent. According to the oil demetalization agent provided by the invention, an acidic organic complexing agent reacts with the ethylenediamine to generate a compound containing N and P elements and the compound and the N-methyl-2-pyrrolidinone have a synergistic effect, so that the complexing capability to metal elements is improved; meanwhile, the corrosion of acidic substances on carbon steel equipment is avoided and the demetalization effect isgood.

Description

technical field [0001] The invention belongs to the technical field of metal removal, and in particular relates to an oil metal removal agent and its preparation method and application. Background technique [0002] Trace elements such as iron, calcium, and magnesium contained in crude oil, residual oil, gasoline, diesel oil, kerosene, and lubricating oil usually exist in the form of oil-soluble organometallic compounds, which can be in the form of complexes or metal soaps and colloids Suspended solids exist in oil. The content of iron ions in oil products increases with the increase of boiling point. For example, in the process of crude oil refining, after crude oil is distilled, most of the metals exist in the residual oil. Residual oil enters the catalytic device as a raw material. The presence of metals, especially iron, is harmful to the catalytic cracking process and must be removed as much as possible to prolong the life of the catalyst. [0003] The removal of meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/20
CPCC10G29/20C10G2300/10C10G2300/1037C10G2300/1062
Inventor 李俊华任海晶程雯王晓晖张颖李移乐李霁阳李俊莉
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND