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Method for producing environment-friendly rubber softening oil

A technology for rubber softening oil and production method, which is applied in chemical processing of tar pitch/petroleum pitch/natural pitch, processing of hydrocarbon oil, petroleum industry, etc., can solve the problems of human body and environmental pollution hazards and the like

Inactive Publication Date: 2009-10-21
SHANGHAI FUWODI LUBRICANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, almost all domestic rubber processing enterprises use high-aromatic extender oil as softening oil for unsaturated rubber. Although it has good compatibility with rubber and low price, because it contains a large amount of polycyclic polycyclic aromatic hydrocarbons, it will pollute the human body and the environment. extremely harmful

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of production method of environment-friendly type rubber softening oil, concrete steps are:

[0016] The first step is to distill the naphthenic oil under reduced pressure at a vacuum of 700mmHg and a temperature of 220°C, take a fraction at 280-340°C (open flash point above 220°C), and add Y-6 produced by Lanzhou Petrochemical Company Type modified alumina catalyst 5wt%, when the hydrogen pressure is 50Kpa, the flow rate is 12m 3 / h, the reaction temperature is 385 DEG C under the condition of high-pressure hydrogenation reaction, the resulting product is added to clay 2wt%, refined at 120 DEG C for 1 hour, vacuum filtration to obtain refined mineral oil;

[0017] The second step is to add propane to the bottom oil of the decompression tower with a weight ratio of 5: 1, leave it to separate the liquid after stirring, and obtain the lower layer asphalt component, and reduce the asphalt component under the condition that the vacuum degree is 750mmHg and the temper...

Embodiment 2

[0020] A kind of production method of environment-friendly type rubber softening oil, concrete steps are:

[0021] The first step is to distill the intermediate base oil under reduced pressure at a vacuum degree of 740mmHg and a temperature of 260°C, take a fraction at 280-340°C (open flash point above 220°C), and add Y-6 produced by Lanzhou Petrochemical Company Type modified alumina catalyst 12wt%, when the hydrogen pressure is 70Kpa, the flow rate is 15m 3 / h, the reaction temperature is 375 ° C under the condition of high-pressure hydrogenation reaction, the resulting product is added to clay 10wt%, refined at 180 ° C for 3 hours, and vacuum filtered to obtain refined mineral oil;

[0022] The second step is to add propane to the bottom oil of the decompression tower with a weight ratio of 10:3, leave it to separate the liquid after stirring, and obtain the lower layer asphalt component, and reduce the asphalt component under the condition that the vacuum degree is 750mmHg...

Embodiment 3

[0025] A kind of production method of environment-friendly type rubber softening oil, concrete steps are:

[0026] The first step is to distill the intermediate base crude oil under reduced pressure under the conditions of vacuum degree of 720mmHg and temperature of 240°C, take the fraction at 280-340°C (open flash point above 220°C), and add Y-6 produced by Lanzhou Petrochemical Company Type modified alumina catalyst 10wt%, when the hydrogen pressure is 60Kpa, the flow rate is 13.5m 3 / h, the reaction temperature is 380 DEG C under the condition of high-pressure hydrogenation reaction, the resulting product is added to clay 5wt%, refined at 150 DEG C for 2 hours, and vacuum filtered to obtain refined mineral oil;

[0027] The second step is to add propane to the bottom oil of the vacuum tower at a weight ratio of 4:1, and then stand still to separate the liquid after stirring to obtain the lower layer of asphalt solution, which is distilled under reduced pressure at a vacuum ...

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Abstract

The invention relates to a method for producing environment-friendly rubber softening oil. The method is characterized by comprising the following steps: decompressing and distilling mineral oil; adding a catalyst into cut fraction at a temperature of between 280 and 340 DEG C to carry out a high-pressure hydrogenation reaction; adding the obtained product into carclazyte to be refined, and carrying out vacuum filtration to obtain refined mineral oil; treating bottom oil of a vacuum tower by the conventional propane deasphalting process to obtain an asphalt solution; distilling the asphalt solution under reduced pressure, taking cut fraction at a temperature of between 270 and 330 DEG C to be oxidized to obtain oxidized asphalt; mixing and stirring the obtained refined mineral oil and the oxidized asphalt in proportion by weight of 2.5-3.5:1.2-1.5 at a temperature of between 50 and 80 DEG C. The environment-friendly rubber softening oil has the advantages that the softening property, the compatibility and the intermiscibility are the same as or similar to the prior product high aromatic oil, but as the rubber softening oil does not contain or contains trace polycyclic aromatic hydrocarbon, so the rubber softening oil does not have carcinogenicity, does not pollute human body and environment, and meet the requirement of environment-friendly rubber extending oil.

Description

technical field [0001] The invention relates to a production method of environment-friendly rubber softening oil, which is used for styrene-butadiene rubber (SBR), neoprene rubber (CR), natural rubber (NR), isoprene rubber (IR), polybutadiene rubber The filling processing of (BR) belongs to the technical field of rubber additives. Background technique [0002] At present, almost all domestic rubber processing enterprises use high-aromatic extender oil as softening oil for unsaturated rubber. Although it has good compatibility with rubber and low price, because it contains a large amount of polycyclic polycyclic aromatic hydrocarbons, it will pollute the human body and the environment. It is extremely harmful. At present, the rubber tires in the European market are not filled with high aromatic oil. Therefore, it is very urgent to develop environment-friendly rubber softening oil, and the product has broad market prospects. Contents of the invention [0003] The purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08L95/00C10G67/14C10C3/04C10C3/06
Inventor 金强顾文良蒋琦
Owner SHANGHAI FUWODI LUBRICANT
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