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Process for demetalizating of hydrocarbon oil

A technology for removing metal and hydrocarbon oil, which is applied in the field of removing metal calcium, magnesium and iron, and can solve problems such as secondary metal pollution of crude oil and equipment corrosion

Inactive Publication Date: 2007-01-17
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these inventions all use acid and its salt as demetallization agent, acid will cause corrosion of equipment, and salt will cause secondary metal pollution to crude oil

Method used

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  • Process for demetalizating of hydrocarbon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this example, acetylacetone was used to remove metallic calcium.

[0023] The oil used in the experiment was crude oil processed by a refinery in Xinjiang (referred to as Xinjiang crude oil), with a calcium content of 40.9ppm, an iron content of 3.23ppm, and a magnesium content of 0.96ppm. Acetylacetone is a commercially available reagent of analytical grade.

[0024] Weigh a certain amount of Xinjiang crude oil and put it into a beaker, add acetylacetone and water according to a certain dose-to-calcium ratio and a water injection rate of 20%. Preheat to 80°C temperature. Use a mixer to mix oil, water and demetallizer for 15 minutes to form an oil-water emulsion. After the end, pour the oil-water mixture into the desalting bottle, add 50ppm demulsifier, put it into the DPY-2 demulsification and electric dehydration performance tester, and stand still for 1 hour under the condition of temperature 80°C and electric field 2000V to completely separate oil and water . ...

Embodiment 2

[0029] In this example, acetylacetone was used as the demetallization agent. Taking Xinjiang crude oil as the experimental oil, under the conditions of 2.5 doses of calcium molar ratio and 20% water injection rate, the test method is the same as that of Example 1, and the results are listed in Table 2.

[0030] It can be seen from the results in Table 2 that acetylacetone has a good demetallization effect when the mixing time is in the range of 5-30 minutes and the mixing temperature is in the range of 30-80°C.

[0031] temperature, ℃

Embodiment 3

[0033] In this example, acetylacetone was used as the demetallization agent. Taking Shengli crude oil as the experimental oil (calcium content 32.3ppm, iron content 9.59ppm, magnesium content 2.51ppm), under the conditions of 2.5 metal molar ratios and 20% water injection rate, the test method is the same as in Example 1, and the results are listed in the table 3.

[0034] It can be seen from the results in Table 3 that acetylacetone not only has a good decalcification effect, but also has a good deferrification and magnesium removal effect.

[0035]

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PUM

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Abstract

A demetallating process for the hydrocarbon oil includes such steps as mixing the acetylacetone as demetalating agent with raw hydrocarbon oil, water and demulsifier, and oil-water separation. Its advantage is high effect to remove Ca, Mg, Fe, etc.

Description

technical field [0001] The invention relates to a method for removing metal elements from hydrocarbon oil such as crude oil, heavy distillate oil or residual oil, in particular to a method for removing metal calcium, magnesium and iron from hydrocarbon oil. Background technique [0002] With the aggravation of heavy and inferior crude oil, the metal content in crude oil has increased significantly. Since most of the metals in crude oil are concentrated in the resid, the processing of resid or heavy oil is often plagued by metal problems. Metals and their compounds can directly or indirectly cause scaling and corrosion of equipment and pipelines, catalyst poisoning and deactivation, and product quality degradation during petroleum processing. These problems not only pose a threat to the safe production of refineries, but also cause product The quality deteriorates, the energy consumption increases, and the economic benefit decreases. [0003] The metal elements with high co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G21/16
Inventor 邹滢翁惠新吴江英
Owner EAST CHINA UNIV OF SCI & TECH
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