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Hydrocarbon oil demetalizing agent, and preparing method and use method thereof

A demetallizing agent and hydrocarbon oil technology, which is used in non-metal refining, refining hydrocarbon oil, petroleum industry and other directions, can solve problems such as unfavorable environmental protection, poor applicability, and difficult removal, and achieves good oil-water separation effect and use technology. Simple, low oil content

Inactive Publication Date: 2003-11-12
PETROCHINA KARAMAY PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above demetallization agents are not easy to remove tightly bound organic metals, such as calcium naphthenate, phenate, porphyrin iron, porphyrin nickel, etc. The resulting precipitate is easily entrained by the oil phase, and the pH value needs to be adjusted during demetallization. main flaw
Patent CN107673 in recent years uses inorganic polyphosphorus such as sodium tripolyphosphate as demetallization agent, CN110575 adopts organic phosphonic acid such as aminotrimethylene phosphonic acid, etc.; Soluble salts are used as decalcification agents, but the above demetallization agents have a low removal rate of metal ions in heavy crude oil with high calcium content, expensive agents, high demetallization costs, and difficult industrialization. Compounds that are not conducive to environmental protection defects
CN123248 discloses a method of decalcification with carbon dioxide, US4741821, US5102852, and US5143887 adopt hydrogenation decalcification process, and WO98 / 14534 adopts resin decalcification process, and their main defects are complex process, high cost of decalcification, and tight combination The organic calcium removal rate is limited and the applicability is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 26

[0023] Hydrocarbon oil demetallizer (embodiment 1): 10% demetallizer+90% demulsifier+0% demulsifier;

[0024] Minus second-line distillate oil: calcium content 87.3μg / g, magnesium 6.38μg / g, vanadium 12.6μg / g, salt content 5.8mg / L;

[0025] Fully mix the hydrocarbon oil demetallization agent accounting for 0.002% of the second-line distillate oil, 5% of water and the second-line distillate oil at 100°C and 0.5MPa mixing pressure difference until the diameter of the oil-water particles reaches 0.1μm ~50μm, put it in an electric desalting tank, act for 20 / 10min under the conditions of desalting temperature of 100℃ and strong and weak electric fields of 1500 / 100v / cm respectively, after oil and water separation, analyze the calcium content of primary purified oil / calcification rate of 5.2 μg / g / 94.3%, magnesium content / magnesium removal rate 0.389μg / g / 93.9%, vanadium content / vanadium removal rate 0.412μg / g / 96.7%, desalted sewage oil content 43μg / g, purified oil water content 0.2%, ...

Embodiment 27

[0027] Hydrocarbon oil demetallizer (embodiment 3): 30% demetallizer+50% demulsifier+20% demulsifier;

[0028] Crude oil: calcium content 55.7μg / g, magnesium 4.5μg / g, vanadium 29.6μg / g, salt content 45.7mg / L;

[0029] Mix 0.02% hydrocarbon oil demetallizer, 6% water and crude oil with a static mixer at 130°C and 0.3MPa mixing pressure difference until the diameter of oil and water particles reaches 0.1 μm to 50 μm, and place them in an electric desalting tank , under the conditions of desalination temperature of 130°C and strong and weak electric fields of 950 / 450v / cm respectively for 30 / 15min, after oil-water separation, the calcium content / decalcification rate in the purified oil was analyzed to be 7.3μg / g / 86.9%, and the magnesium content / The magnesium removal rate is 0.32μg / g / 92.9%, the vanadium content / vanadium removal rate is 3.34μg / g / 88.7%, the oil content of desalted sewage is 59μg / g, the water content of purified oil is 0.25%, and the salt content of purified oil is 2.3...

Embodiment 28

[0031] Hydrocarbon oil demetallizer (embodiment 5): 50% demetallizer+10% demulsifier+40% demulsifier

[0032] Crude oil: calcium 260μg / g, magnesium 1.64μg / g, vanadium 1.6μg / g, iron 8.6μg / g, salt content 27.6mg / L;

[0033] Mix 0.8% of crude oil with hydrocarbon oil demetallizer, 10% of water, and crude oil with a stirrer at 60°C and normal pressure for 30 minutes, and place them in an electric desalting tank. Under the condition of 1000 / 500v / cm for 60 / 20min, after oil-water separation, the calcium content / decalcification rate of the purified oil was analyzed to be 25.8μg / g / 90.1%, the magnesium content / magnesium removal rate was 0.432μg / g / 73.7%, vanadium The content / removal rate of vanadium is 0.442μg / g / 72.4%, the iron content is 5.68μg / g / 34.0%, and the salt content is 1.9mg / L.

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PUM

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Abstract

The present invention relates to a hydrocarbon oil demetallization agent, its preparation method and application method. Said hydrocarbon oil demetallization agent comprises demetallization agent, demulsifier and demetallization adjuvant. Its application method includes the following steps: fully mixing hydrocarbon oil demetallization agent or its aqueous solution and hydrocarbon oil according to a certain ratio and adopting conventional electric desalting process to make treatment so as to obtain demetallized hydrocarbon oil. At the same time of desalting it can remove other metal ions of calcium, magnesium, iron, vanadium and nickel, etc. from hydrocarbon oil, so that its oil and water separation effect is good.

Description

technical field [0001] The invention relates to a preparation for removing metal ions from hydrocarbon oil, a preparation method and a use method thereof, and is a hydrocarbon oil demetallization agent and a preparation method and a use method thereof. Background technique [0002] With the development of oil extraction technology, a large amount of heavy oil has been extracted, and the types and contents of metal ions contained in these crude oils, such as calcium, magnesium, sodium, iron, nickel, vanadium, copper, etc. In oil fields, due to the use of chemical recovery aids, the content of metal ions such as calcium, magnesium, and sodium in the extracted crude oil is on the rise. The harm caused by the existence of the above-mentioned metal ions to crude oil distillation and secondary processing has attracted the attention of people in the industry as early as the 1980s, and technologies for removing metal ions in different ways from hydrocar...

Claims

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Application Information

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IPC IPC(8): C10G17/02C10G29/00C10G29/02C10G32/00C10G32/02
CPCC10G29/00
Inventor 马忠庭牛春革罗来龙于曙艳李磊马玲乔文
Owner PETROCHINA KARAMAY PETROCHEMICAL CO LTD
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