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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: 2013-07-24
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, based on the mass percentage, composed of the following components: formic acid 15%, acetic acid 10%, citric acid 40% and RPL 35%; the total amount of RPL is 100% The mass percentage content 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 and mix them to make RPL;

[0021] (2) After weighing formic acid and acetic acid and mixing them, the temperature is raised to 60°C, citric acid is added, and the temperature is raised to 70°C and kept for 1 hour;

[0022] (3) Cool down to 50°C, add RPL, and then heat up to 80°C and keep it for 1 hour to prepare high-sulfur and high-acid crude oil decalcifier.

Embodiment 2

[0024] A high-sulfur and high-acid crude oil decalcifier, based on mass percentage, consisting of the following components: formic acid 13%, acetic acid 7%, citric acid 45% and RPL 35%; the total amount of RPL is 100% The mass percentage content 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 and mix them to make RPL;

[0027] (2) After weighing formic acid and acetic acid and mixing them, the temperature is raised to 60°C, citric acid is added, and the temperature is raised to 70°C and kept for 1 hour;

[0028] (3) Cool down to 50°C, add RPL, and then heat up to 80°C and keep it for 1 hour to prepare high-sulfur and high-acid crude oil decalcifier.

Embodiment 3

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

[0031] Preparation Process:

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

[0033] (2) After weighing formic acid and acetic acid and mixing them, the temperature is raised to 60°C, citric acid is added, and the temperature is raised to 70°C and kept for 1 hour;

[0034] (3) Cool down to 50°C, add RPL, and then heat up to 80°C and keep it for 1 hour to prepare 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 specifically relates to a high-sulfur and high-acid crude oil decalcification agent and a preparation method thereof. technical background: [0002] Due to the increasing scarcity of petroleum resources, more oilfields 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 and cause calcium to enter the organic phase. This may be recent One of the reasons for the increase in calcium content in crude oil. With the further development of crude oil extraction, the calcium content in crude oil may become higher and higher. On the other hand, due to limited crude oil reserves, the contradiction between heavy crude oil and light oil demand growth has become increasingly prominent. Heavy oil processing techniques such as hydrocracking, catalytic cracking...

Claims

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Application Information

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IPC IPC(8): C10G29/22
Inventor 葛晓军闵敏黄磊
Owner JIANGSU CHUANGXIN PETROCHEM
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