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Demetalization method of oil products

A technology for demetallization and demetallization, which is applied in the petroleum industry, refining hydrocarbon oil, refining with two or more solvents, etc. It can solve the problems of harsh operating conditions, high operating costs, and large investment, and achieve mild operating conditions. , the effect of low investment and operating costs, high demetallization rate

Inactive Publication Date: 2009-03-11
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operating conditions of this method are relatively harsh, that is, high temperature, high pressure, catalyst with stronger activity and longer reaction time are required, so that the whole process not only requires large investment and high operating cost, but also consumes a lot of energy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: The raw material oil is Liaohe wax oil. Take 80ml of raw material oil and pour it into a beaker to preheat to 60°C. After taking it out, add trimethyl phosphate and water at a dosage of 1800 μg per gram of raw material oil and 6% of the oil quality, mix well, and put the ultrasonic reactor probe Insert in the beaker, start the ultrasonic reactor, the ultrasonic reaction intensity is 100%, and the sound intensity is 10w cm -2 , with a power of 200W, adopts continuous action mode, reacts at low frequency, and the action time is 15 minutes. After the reaction, it was allowed to stand at a constant temperature of 80° C. for 1 hour and then taken out for oil-water separation. The metal content is measured by an atomic absorption spectrophotometer, and the calcium removal rate is 80.3%, the zinc removal rate is 91.6%, and the nickel removal rate is 84.7%.

Embodiment 2

[0014] Embodiment 2: The raw material oil is Liaohe wax oil. Get 80ml of raw material oil and pour it into a beaker to preheat to 60°C. After taking it out, add trimethyl phosphate and Water, after fully mixing, insert the ultrasonic reactor probe into the beaker, start the ultrasonic reactor, the ultrasonic reaction intensity is 100%, and the sound intensity is 10w cm -2 , with a power of 200W, adopts continuous action mode, reacts at low frequency, and the action time is 15 minutes. After the reaction, it was allowed to stand at a constant temperature of 80° C. for 1 hour and then taken out for oil-water separation. The metal content is measured by an atomic absorption spectrophotometer, and the calcium removal rate is 79.5%, the zinc removal rate is 91.1%, and the nickel removal rate is 79.7%.

Embodiment 3

[0015] Embodiment 3: The raw material oil is Liaohe wax oil, and the raw material oil of getting 80ml is poured into the beaker and preheated to 60 ℃, after taking out, add formic acid and water respectively according to the dosage of 1800 μ g per gram of raw material oil and 8% of oil quality, fully After mixing, insert the ultrasonic reactor probe into the beaker, start the ultrasonic reactor, the ultrasonic reaction intensity is 100%, and the sound intensity is 10w cm -2 , with a power of 200W, adopts continuous action mode, reacts at low frequency, and the action time is 15 minutes. After the reaction, it was allowed to stand at a constant temperature of 80° C. for 1 hour and then taken out for oil-water separation. The metal content is measured by an atomic absorption spectrophotometer, and the calcium removal rate is 79.4%, the zinc removal rate is 94.8%, and the nickel removal rate is 60.2%.

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Abstract

The invention discloses a demetallization method for oil products. The method comprises the following steps: 1) the weighed oil products are pre-heated up to the temperature of between 50 and 70 DEG C so as to ensure that the oil products are in flowing state; 2) a demetallization agent and water are added in the oil products, completely mixed and subjected to ultrasonic wave action for 10 to 18 minutes; and 3) the mixed liquid after the ultrasonic treatment is kept stand at a temperature of between 60 and 90 DEG C for one hour, and is subjected to oil-water separation. In the method, the demetallization agent is added in the oil products for the demetallization reaction, and the ultrasonic wave action is used to strengthen the demetallization reaction, the metalloporphyrin and the non-porphyrin oil soluble compositions in the oil products are converted into hydrophilic compositions which are subjected to the oil-water separation, so that metal in the oil products is removed. The method can effectively remove the metal in the oil products without rigorous reaction conditions such as high temperature, high pressure and the like, so that the method has the advantages of mild operating condition, low investment and operational cost, low energy consumption, no pollutant emission, simple process, easy operation, high metal removing ratio and obvious metal removing effect.

Description

1. Technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a demetallization method for oil products. 2. Background technology [0002] Crude oil and its fractions contain a small amount of metals in various forms, as many as 45 have been determined. Among them, Na, Ca, Mg and other alkali metals or alkaline earth metals mostly exist in the form of inorganic salts, naphthenates, phenates, etc. Nickel, vanadium, etc. mostly exist in the form of oil-soluble porphyrin compounds. In the process of petroleum processing, most of Na, Ca, Mg, etc. can be removed by the electric desalination device, but there will still be some residues, and the residual Na, Ca, Mg inorganic salts will cause condensation and cooling at the top of the atmospheric and vacuum device. Corrosion of the system and serious scaling and corrosion of the heating furnace tube. However, the nickel and vanadium in the form of porphyrin are difficul...

Claims

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Application Information

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IPC IPC(8): C10G21/02C10G21/06
Inventor 赵德智宋官龙曹祖斌韩冬云
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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