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Diesel fuel cetane number improver composition

A composition and improver technology, which is applied in the dehydration of hydroxyl-containing compounds to prepare ethers, petroleum industry, liquid carbon-containing fuels, etc. It can solve the problems of unfavorable emission regulations, clean and environmentally friendly diesel, increased nitrogen oxide emissions, and difficult control of the reaction process. , to achieve the effects of improving exhaust emission pollution, improving environmental protection performance, improving power performance and economic performance

Inactive Publication Date: 2017-06-23
XIAN JIAHONG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of nitric acid or a mixture of sulfuric acid and nitric acid as a nitrating agent in the production process of this type of additive, the process produces certain environmental pollution.
In addition, since the nitrification reaction is a violent exothermic reaction, the reaction process is difficult to control, and there is still a danger of explosion during the production process.
[0005] Artificially adding nitrogen-containing organic compounds to diesel increases the emission of nitrogen compounds in the tail gas, which is not conducive to the increasingly stringent emission regulations and the trend of developing clean and environmentally friendly diesel

Method used

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preparation example Construction

[0017] The present invention discloses a preparation method of diisopropyl ethylene ether, the preparation method of diisopropyl ethylene glycol, the method comprises as follows: using isopropanol and ethylene glycol as raw materials, and adding a catalyst, at 120 to 150 The mixture is obtained by reacting at a temperature of ℃ for 2-5 hours; the molar ratio of isopropanol to ethylene glycol is 2.1-5:1; the mass ratio of the catalyst to ethylene glycol is 0.02-0.09:1.

[0018] The above-mentioned catalyst is p-benzenemethanesulfonic acid.

[0019] The molar ratio of the above-mentioned isopropanol to ethylene glycol is 2.2-4:1.

[0020] The mass ratio of the catalyst to ethylene glycol is 0.03-0.06:1.

[0021] The above method also includes the following steps: separating the reacted mixture: cooling the mixture to 80-95°C, recovering unreacted isopropanol and ethylene glycol; then raising the temperature to 100-120°C, evaporating the water generated by the reaction, and cool...

Embodiment 1

[0029] Add 132 grams of isopropanol, 62 grams of ethylene glycol, and 1.9 grams of catalyst p-benzenemethanesulfonic acid into a stainless steel reaction kettle, and react at a temperature of 120° C. for 3 hours. Lower the temperature and recover unreacted isopropanol and ethylene glycol at 80-95°C, then raise the temperature to 100-120°C to distill off the water generated by the reaction, cool the product to room temperature, remove p-toluenesulfonic acid by suction filtration, and obtain the product diiso Propyl glycol ether, the purity of the product analyzed by HPLC was 95%.

[0030] Get above-mentioned product 44.7 grams, add antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester 0.25 grams, defoamer trihydroxypolyoxypropylene ether 0.05 grams and Stabilizer octanol 5 grams, vigorously stirred for 30 minutes to obtain a diesel cetane number improver composition.

Embodiment 2

[0032] Add 190 grams of isopropanol, 93 grams of ethylene glycol, and 2.8 grams of catalyst p-benzenemethanesulfonic acid into a stainless steel reaction kettle, and react at 135° C. for 3 hours. Lower the temperature to 80-95°C to recover unreacted isopropanol and ethylene glycol, then raise the temperature to 100-120°C to evaporate the water generated by the reaction, cool the product to room temperature, remove p-toluenesulfonic acid by suction filtration, and obtain the product diisopropyl Diethyl ether, the purity of the product analyzed by HPLC was 95.8%.

[0033] Get 45 grams of the above product, add 0.3 grams of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester of antioxidant, 0.2 grams of defoamer trihydroxypolyoxypropylene ether, Stabilizer octanol 4.5 grams, vigorously stirred for 30 minutes to obtain a diesel cetane number improver composition.

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Abstract

The invention discloses a preparation method of diisopropyl ethanediether. The preparation method of the diisopropyl ethanediether comprises the following steps: taking isopropanol and ethanediether as raw materials, adding a catalyst and reacting for 2-5 hours at a temperature of 120-150 DEG C to obtain a mixture, wherein molar ratio of the isopropanol to the ethanediol is (2.1-5):1, and mass ratio of the catalyst to the ethanediol is (0.02-0.09):1. Diesel fuel cetane number improver disclosed by the invention can improve combustion performance of an oil product as well as power performance and economic performance of an engine, and can reduce pollution caused by exhaust gas emission of the engine.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a diesel cetane number improver composition. Background technique [0002] With the pressure of domestic environmental protection and the urgent need for air pollution control, the requirements for diesel quality are getting higher and higher, especially for the cetane number index and environmental protection performance of diesel oil. The cetane number is an important indicator of diesel ignition performance, which has an impact on engine cold start, exhaust emissions and noise. [0003] After 2016, my country has implemented a new diesel specification standard National V, which stipulates that the cetane number of diesel should reach 47 to 50 or more, and the diesel of many refineries will not meet this standard. Therefore, how to economically increase the cetane number of diesel oil has become an urgent problem faced by oil refining enterprises. F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C41/09C07C43/10C10L1/185C10L1/183C10L1/182C10L1/19C10L1/198
CPCC07C41/09C10L1/143C10L1/1824C10L1/1832C10L1/1852C10L1/191C10L1/1985C07C43/10
Inventor 程长安
Owner XIAN JIAHONG PETROCHEM TECH
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