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High-sulfur and high-acid crude oil decalcifying agent and preparation method thereof

A crude oil decalcifier and high acid technology, which is used in the petroleum industry and refined hydrocarbon oil, etc., can solve the problems of shortening the operation period of the device, poisoning and deactivation of the catalyst, aggravating the corrosion of equipment, etc. Environmentally friendly effects

Active Publication Date: 2015-01-07
JIANGSU CHUANGXIN PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Calcium in crude oil has adverse effects on the refining process, such as aggravating equipment corrosion, fouling furnace tubes, catalyst poisoning and deactivation, and shortening the operating cycle of equipment, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A high-sulfur and high-acid crude oil decalcifier, which is composed of the following components in terms of mass percentage: 15% formic acid, 10% acetic acid, 40% citric acid and 35% RPL; the total amount of RPL is 100% , the mass percentage of each component in the RPL is: 20% isopropanol, 20% camphor oil and 60% eucalyptus oil.

[0019] Preparation Process:

[0020] (1) Weigh isopropanol, camphor oil and eucalyptus oil in proportion to make RPL;

[0021] (2) After mixing formic acid and acetic acid in proportion, heat up to 60°C, add citric acid, heat up to 70°C and keep warm for 1 hour;

[0022] (3) Lower the temperature to 50°C, add RPL, then raise the temperature to 80°C and keep it warm for 1 hour to prepare a high-sulfur and high-acid crude oil decalcifier.

Embodiment 2

[0024] A high-sulfur and high-acid crude oil decalcifier, which is composed of the following components in terms of mass percentage: 13% formic acid, 7% acetic acid, 45% citric acid and 35% RPL; the total amount of RPL is 100% , the mass percentage of each component in the RPL is: 15% isopropanol, 15% camphor oil and 70% eucalyptus oil.

[0025] Preparation Process:

[0026] (1) Weigh isopropanol, camphor oil and eucalyptus oil in proportion to make RPL;

[0027] (2) After mixing formic acid and acetic acid in proportion, heat up to 60°C, add citric acid, heat up to 70°C and keep warm for 1 hour;

[0028] (3) Lower the temperature to 50°C, add RPL, then raise the temperature to 80°C and keep it warm for 1 hour to prepare a high-sulfur and high-acid crude oil decalcifier.

Embodiment 3

[0030] A high-sulfur and high-acid crude oil decalcifier, which is composed of the following components in terms of mass percentage: 18% formic acid, 10% acetic acid, 35% citric acid and 37% RPL; the total amount of RPL is 100% , the mass percentage of each component in the RPL is: 25% isopropanol, 25% camphor oil and 50% eucalyptus oil.

[0031] Preparation Process:

[0032] (1) Weigh isopropanol, camphor oil and eucalyptus oil in proportion to make RPL;

[0033] (2) After mixing formic acid and acetic acid in proportion, heat up to 60°C, add citric acid, heat up to 70°C and keep warm for 1 hour;

[0034] (3) Lower the temperature to 50°C, add RPL, then raise the temperature to 80°C and keep it warm for 1 hour to prepare a high-sulfur and high-acid crude oil decalcifier.

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PUM

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Abstract

The invention discloses a high-sulfur and high-acid crude oil decalcifying agent and a preparation method thereof. The decalcifying agent comprises the following components in percentage by mass: 10%-20% of formic acid, 5%-13% of acetic acid, 30%-50% of citric acid and 17%-55% of RPL, wherein if the total amount of RPL is 100%, and the RPL comprises the following components in percentage by mass: 10%-30% of isopropanol, 10%-30% of cinnamomum camphora essential oil and 50%-70% of eucalyptus oil. The decalcifying agent has the following advantages that: (1) a small quantity of the decalcifying agent is added; (2) the decalcifying agent is low in cost; and water-soluble organic calcium slats can be generated after the decalcifying, so that the decalcifying agent is harmless to the environment. Calcium decalcified by a conventional decalcifying agent precipitates sometimes, or the chemical oxygen demand (COD) of sulphur-bearing wastewater of an oil refining atmospheric and vacuum distillation unit is obviously increased. The decalcifying agent has the advantages of cost saving, energy conservation, wastewater discharge reduction and environmental protection benefit.

Description

Technical field: [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a decalcifying agent for high-sulfur and high-acid crude oil and a preparation method thereof. technical background: [0002] Due to the increasingly scarce oil resources, more and more oil fields adopt tertiary oil recovery technologies such as water flooding, polymer flooding, and CO2 flooding. The application of some tertiary oil recovery technologies will dissolve calcium carbonate in rocks so that calcium can enter the organic phase. This may be the case in recent years. One of the reasons for the increase of calcium content in crude oil. With the further deepening of crude oil extraction, the calcium content in crude oil may become higher and higher. On the other hand, due to the limited crude oil reserves, the contradiction between heavy crude oil and light oil product demand growth has become increasingly prominent, and heavy oil processing technologies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/22
Inventor 葛晓军闵敏黄磊
Owner JIANGSU CHUANGXIN PETROCHEM
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