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Preparation method of diesel oil pour point depressant

A diesel pour point depressant and pour point depressant technology, which is used in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of high wax content and can not provide polywax crystal dispersion, etc., to reduce adhesion and improve. Anticoagulant effect, effect of altering growth habit

Inactive Publication Date: 2018-01-23
常州市协旺纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the problem that the current pour point depressant has high wax content when the diesel oil is low temperature and cannot provide many crystal nuclei to fully disperse the wax crystals, the present invention provides a diesel pour point depressant

Method used

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  • Preparation method of diesel oil pour point depressant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The choice of water carrier: chloroform.

[0026] Catalyst of choice: ethylenediaminetetraacetic acid.

[0027] Choice of surfactant: sodium dizincyl sulfosuccinate.

[0028] (1) In parts by weight, take 50 parts of toluene, 30 parts of acrylate, 20 parts of benzoic acid, 25 parts of higher alcohol ester, 1 part of water-carrying agent, 2 parts of catalyst, and 1 part of surfactant;

[0029] (2) Put toluene and acrylate into the reactor, feed ethylene, discharge the gas in the reactor, add water-carrying agent and catalyst, raise the temperature to 50°C, then add benzoic acid and higher alcohol ester, and raise the temperature to 110°C for reaction;

[0030] (3) After 5 hours of reaction, end the reaction, vent ethylene, cool to room temperature, collect the reaction mixture, distill the reaction mixture, recover toluene, and collect the distillation residue;

[0031] (4) Filter the distillation residue, collect the filtrate, mix the filtrate with a surfactant, and c...

Embodiment 2

[0033] The choice of water carrier: chloroform.

[0034] Catalyst of choice: periodic acid.

[0035] Surfactant of choice: sodium dodecylbenzenesulfonate.

[0036] (1) In parts by weight, take 55 parts of toluene, 33 parts of acrylate, 23 parts of benzoic acid, 27 parts of higher alcohol ester, 3 parts of water-carrying agent, 2 parts of catalyst, and 2 parts of surfactant;

[0037] (2) Put toluene and acrylate into the reactor, feed ethylene, discharge the gas in the reactor, add water-carrying agent and catalyst, raise the temperature to 55°C, then add benzoic acid and higher alcohol ester, and raise the temperature to 115°C for reaction;

[0038] (3) After 6 hours of reaction, end the reaction, vent ethylene, cool to room temperature, collect the reaction mixture, distill the reaction mixture, recover toluene, and collect the distillation residue;

[0039] (4) Filter the distillation residue, collect the filtrate, mix the filtrate with a surfactant, and collect the mixtu...

Embodiment 3

[0041] The choice of water carrier: carbon tetrachloride.

[0042] Catalyst of choice: periodic acid.

[0043] Surfactant of choice: Sodium dodecylbenzenesulfonate.

[0044] (1) In parts by weight, take 60 parts of toluene, 35 parts of acrylate, 25 parts of benzoic acid, 30 parts of higher alcohol ester, 4 parts of water-carrying agent, 3 parts of catalyst, and 2 parts of surfactant;

[0045] (2) Put toluene and acrylate into the reactor, feed ethylene, discharge the gas in the reactor, add water-carrying agent and catalyst, raise the temperature to 60°C, then add benzoic acid and higher alcohol ester, and raise the temperature to 120°C for reaction;

[0046] (3) After 7 hours of reaction, end the reaction, vent ethylene, cool to room temperature, collect the reaction mixture, distill the reaction mixture, recover toluene, and collect the distillation residue;

[0047] (4) Filter the distillation residue, collect the filtrate, mix the filtrate with a surfactant, and collect...

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Abstract

The invention relates to the technical field of pour point depressants and discloses a preparation method of a diesel oil pour point depressant. A polymer is synthesized from acrylic ester, ethylene,benzoic acid and higher alcohols ester, the carbon chain length of the acrylic ester and the carbon chain length of diesel are similar, the intermiscibility is high, the wrapping is relatively good inthe process of crystallization of the diesel, and the development of a wax crystal is hindered, so that the effect of the diesel pour point is reduced, and moreover, the depressant is adsorbed on theactive center of a crystal nucleus of the wax crystal due to a polar group in the higher alcohols ester, so that the surface characteristic of the wax crystal is changed, the growth of the crystal ishindered or the growth habit of the crystal is changed, the dispersion degree of the wax crystal is improved, the wax crystal does not coalesce easily to form a net, the adhesive attraction between the wax crystals is weakened, the polarity of the depressant is improved by ethylene and the benzoic acid, and the pour point depression effect is further improved.

Description

technical field [0001] The invention relates to the technical field of pour point depressants, and relates to a preparation method of diesel pour point depressants. Background technique [0002] Diesel pour point depressant, also known as diesel low-temperature flow performance improver, is an additive that can significantly reduce the freezing point and cold filter point of diesel and improve the low-temperature flow performance of diesel by adding a small amount. [0003] It mainly improves the low temperature flow properties of diesel through eutectic, adsorption, solubilization or nucleation. The research on diesel oil pour point depressant is of great significance to increase the output of diesel oil, save kerosene, increase the ratio of diesel to gasoline and improve the economic benefits of refineries. [0004] At present, in order to obtain a better cooling filter point reduction effect, domestic and foreign mainly focus on the research on the compounding of two or ...

Claims

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Application Information

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IPC IPC(8): C10L1/196C10L10/00
Inventor 邵俊英丁明红尹凯欣
Owner 常州市协旺纺织品有限公司
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