Preparation method of rubber plasticizer with low content of polycyclic aromatic hydrocarbons

A technology of rubber plasticizer and cyclic aromatic hydrocarbon, which is applied in the field of preparation of rubber plasticizer with low condensed ring aromatic hydrocarbon content, can solve the problems of difficult quality control, low product yield and high production cost, and achieves low operating cost and high aromatic content. Carbon rate and small investment in equipment

Active Publication Date: 2016-09-28
CHINA OFFSHORE BITUMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese Patent "Aromatic Rubber Plasticizer and Its Production Method" (Patent No.: 200810224694.1) and Chinese Patent "Aromatic Rubber Plasticizer and Its Production Method" (Patent No. 200810224695.6) disclose the use of a solvent secondary extraction process as A basic method for manufacturing rubber plasticizers with low condensed ring aromatic content, but this method has the disadvantages of low product yield and high production costs
The open document "The Development and Application of NAP10 Environment-friendly Tire Rubber Plasticizer" reports a method for preparing a rubber plasticizer with low condensed ring aromatics content by using a hydrogenation treatment process. The process has a high yield, but is limited by Factors such as equipment investment and harsh raw materials have not been used by other domestic manufacturers
There are also manufacturers in China that produce environmentally friendly rubber plasticizers through conventional solvent refining methods, but there are common problems of low aromatic carbon rate, low yield and difficult quality control

Method used

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  • Preparation method of rubber plasticizer with low content of polycyclic aromatic hydrocarbons
  • Preparation method of rubber plasticizer with low content of polycyclic aromatic hydrocarbons

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Experimental program
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Effect test

Embodiment 1

[0041] The second-line distillate oil is obtained by vacuum distillation, and the control index is 6-10mm kinematic viscosity at 100°C 2 / s; the reduced second-line distillate oil and aromatic oil are fully mixed in the mixer, and the mixing condition is that the mixed mass ratio of the second-line distillate oil and aromatic oil is 0.5:1; Lift the refined liquid from the top of the tower, the refined liquid is recovered by solvent to obtain refined oil, and the solvent refining temperature is: the temperature at the top of the tower is 80°C, the temperature at the bottom of the tower is 50°C, and the ratio of solvent to oil is 1.8:1.

[0042] In the present embodiment, the physical and chemical parameters of the aromatic oil are:

[0043] Aromatic content is 60%;

[0044] Kinematic viscosity at 100°C is 8mm 2 / s;

[0045] The open flash point is 200°C

[0046] Among them, the content of gum and asphaltene is 0.05%.

Embodiment 2

[0048] The third-line distillate oil is obtained by vacuum distillation, and the control index is 100°C kinematic viscosity is 15-24mm 2 / s; the third-line distillate oil and aromatic oil are fully mixed in the mixer, and the mixing condition is that the mixed mass ratio of the third-line distillate oil and aromatic oil is 2.0:1; Lift the refined liquid from the top of the tower, the refined liquid is recovered by solvent to obtain refined oil, and the solvent refining temperature is: the temperature at the top of the tower is 90°C, the temperature at the bottom of the tower is 60°C, and the ratio of solvent to oil is 1.5:1.

[0049] In the present embodiment, the physical and chemical parameters of the aromatic oil are:

[0050] Aromatic content is 50%;

[0051] Kinematic viscosity at 100°C is 28mm 2 / s;

[0052] The open flash point is 220°C;

[0053] Among them, the content of gum and asphaltene is 0.1%.

Embodiment 3

[0055] The third-line distillate oil is obtained by vacuum distillation, and the control index is 100°C kinematic viscosity is 15-24mm 2 / s; the third-line distillate oil and aromatic oil are fully mixed in the mixer, and the mixing condition is that the mixed mass ratio of the third-line distillate oil and aromatic oil is 3.0:1; Lift the refined liquid from the top of the tower, the refined liquid is recovered by solvent to obtain refined oil, and the solvent refining temperature is: the temperature at the top of the tower is 90°C, the temperature at the bottom of the tower is 60°C, and the ratio of solvent to oil is 1.0:1.

[0056] In the present embodiment, the physical and chemical parameters of the aromatic oil are:

[0057] Aromatic content of 75%;

[0058] Kinematic viscosity at 100°C is 30mm 2 / s;

[0059] The open flash point is 230°C;

[0060] Among them, the content of gum and asphaltene is 0.15%.

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Abstract

The invention discloses a preparation method of a rubber plasticizer with low content of polycyclic aromatic hydrocarbons. The preparation method comprises the following steps: vacuum distillate oil is mixed with aromatic hydrocarbon oil to obtain raw oil; the raw oil enters an extraction tower from the lower part of the extraction tower and is subjected to solvent refining with the solvent entering from the upper part of the extraction tower through countercurrent contact; and refined liquid is obtained from the top of the extraction tower, and the solvent is recycled to obtain refined oil which is the rubber plasticizer. The physical and chemical parameters of the rubber plasticizer are as follows: the aniline point is lower than 92 DEG C; the CA value is higher than 12%; the content of benzo(a)pyrene is lower than 1mg/kg; the content of polycyclic aromatic hydrocarbons is not higher than 3%; the total content of carcinogenic polycyclic aromatic hydrocarbons is lower than 10mg/kg; and the carcinogenic polycyclic aromatic hydrocarbons include benzo[a]pyrene, benzo[e]pyrene, benzo[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[j]fluoranthene, benzo[k]fluoranthene and dibenzo[a, h]anthracene. The method disclosed by the invention has remarkably obvious advantage in yield; and compared with the hydrotreatment technology, in the method disclosed by the invention, by adopting the solvent refining, the equipment investment is small, the operation cost is low, and the adaptability of the raw materials is better.

Description

technical field [0001] The invention relates to a preparation method of a rubber plasticizer with low content of polycyclic aromatic hydrocarbons, belonging to the field of petroleum processing. Background technique [0002] Polycyclic aromatic hydrocarbons refer to aromatic hydrocarbons with two or more rings, which can be refined by dimethyl sulfoxide (DMSO). Usually, the aromatic hydrocarbon oil used in large quantities in the rubber tire industry contains a large amount of polycyclic aromatic hydrocarbons. While these substances provide tires with certain performance, they also release a large amount of harmful substances polycyclic aromatic hydrocarbons to the environment, which poses a threat to the environment and human health. huge threat. Therefore, western developed countries have introduced policies to restrict the use of aromatic oils. The EU REACH regulations implemented on January 1, 2010 clearly stipulate that the added oil directly put into the market or th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G21/20C10G21/16C08L21/00C08L91/00
CPCC08L21/00C10G21/16C10G21/20C10G2300/1074C10G2300/1096C08L91/00
Inventor 于恩强程红卫商希红马志远冯涛李军王瑞瑞
Owner CHINA OFFSHORE BITUMEN
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