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Synthesis method of diesel fuel depressant

A technology of diesel oil point depressant and synthesis method, which is applied in the field of additives, can solve the problems such as difficult to reduce the cold filter point of diesel oil with relatively high wax content, achieve excellent cold filter point reduction performance, improve low temperature performance, and mild reaction conditions Effect

Active Publication Date: 2015-02-04
山东京博众诚清洁能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that diesel oil point depressants are difficult to reduce the cold filter point of diesel oil with relatively high wax content in the prior art, the present invention provides a synthesis method of diesel oil point depressants, which solves the problem that the existing diesel point point depressants are difficult to The problem of reducing the cold filter point of diesel oil with a relatively high wax content, the diesel oil pour point depressant obtained in the present invention has good sensitivity to diesel oil with a high wax content, and has excellent cold filter point reduction performance

Method used

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  • Synthesis method of diesel fuel depressant
  • Synthesis method of diesel fuel depressant

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Effect test

Embodiment 1

[0029] A kind of synthetic method of diesel oil pour point depressant, concrete steps comprise:

[0030] In a reactor with a stirring device, add 90mL toluene and 90mL S150 solvent, stir, control the temperature of the water bath to 95°C, feed nitrogen, the nitrogen pressure is 0.1MPa, add 200g cetyl alcohol ester and 100g acrylamide, divide into two The initiator is dripped for the second time, and the mixed raw material solution composed of vinyl acetate and styrene is added dropwise simultaneously; Dimethyl ester is formed, and described mixed raw material liquid is made up of 100g vinyl acetate and 100g styrene; Add dropwise 8g initiator for the first time, dropwise the mixed raw material liquid 100g that is formed by vinyl acetate and styrene simultaneously, react 0.5 hour Finally, dropwise add the remaining initiator, vinyl acetate and styrene mixed raw material solution; copolymerize for 2 hours, and obtain polymer pour point depressant after the reaction is completed; ...

Embodiment 2

[0033] A kind of synthetic method of diesel oil pour point depressant, concrete steps comprise:

[0034] In a reactor with a stirring device, add 303.0mL of toluene and 151.5mL of S150 solvent, stir, control the temperature of the water bath at 60°C, feed nitrogen with a nitrogen pressure of 0.05MPa, add 200g of behenyl alcohol ester and 100g of diethylene Triamine, drip initiator twice, drop simultaneously the mixed raw material solution that is made up of vinyl acetate and styrene; Dimethyl isobutyrate is formed, and described mixed raw material liquid is made up of 100g vinyl acetate and 200g styrene; Add dropwise 4.8g initiator for the first time, drip the mixed raw material liquid 60g that is formed by vinyl acetate and styrene simultaneously , after 2 hours of reaction, dropwise add the remaining initiator, vinyl acetate and styrene mixed raw material solution; copolymerize for 4 hours, and obtain polymer pour point depressant after the reaction is completed;

[0035] W...

Embodiment 3

[0037]A kind of synthetic method of diesel oil pour point depressant, concrete steps comprise:

[0038] In a reactor with a stirring device, add 95.5mL of toluene and 63.6mL of S150 solvent, stir, control the temperature of the water bath at 80°C, feed nitrogen with a nitrogen pressure of 0.2MPa, add 100g of stearyl ester and 120g of triethylenetetra Amine, drip initiator twice, drop simultaneously the mixed raw material solution that is made up of vinyl acetate and styrene; Dimethyl diisobutyrate is formed, and described mixed raw material liquid is made up of 120g vinyl acetate and 80g styrene; Add dropwise 3.75g initiator for the first time, drip the mixed raw material liquid that is formed by vinyl acetate and styrene simultaneously 50g, after reacting for 4 hours, add dropwise the mixed raw material solution of remaining initiator, vinyl acetate and styrene; copolymerize for 8 hours, and obtain polymeric pour point depressant after the reaction is completed;

[0039] Wei...

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Abstract

The invention discloses a synthesis method of a diesel fuel depressant. The synthesis method comprises the following steps of: carrying out one-pot polymerization reaction in an initiating agent and a solvent by taking poly-alpha-methylacrylic acid high-carbon alcohol ester, a polar nitrogen compound, vinyl acetic ester and vinyl benzene as raw materials; and mixing a reactant with twain and span to obtain a target product, i.e., the diesel fuel depressant. The synthesis method is free of aftertreatment and simple in process; the synergic initiating agent is adopted to initiate the polymerization reaction, and the raw materials are dropwise added in twice and sufficiently react; the reaction conditions are mild, and the polymerization reaction is carried out in the mixed solvent, so that the reaction temperature range is widened, and the reaction is more easily carried out; and a special raw material proportion is adopted, so that the produced diesel fuel depressant has good perceptibility for diesel fuel with high paraffin content and favorable cold filter plugging point reducing performance, and the low-temperature performance of the diesel fuel is remarkably improved.

Description

technical field [0001] The invention relates to an additive, in particular to a synthesis method of a diesel pour point depressant. Background technique [0002] Diesel pour point depressant PPD (Pour Point Depressant), also known as diesel low temperature flow improver, is an important fuel additive in diesel production. Just adding a small amount of PPD to diesel can significantly change the crystal form and structure of the wax in diesel, reduce the temperature and strength of the wax to form a network structure, effectively reduce its cold filter point, and maintain good low-temperature flow of diesel To further expand the storage and transportation methods and application scope of diesel oil, and improve production flexibility and economic benefits. [0003] The production of paraffin-based crude oil in my country is relatively high, so the refined diesel oil has a high wax content. At present, domestic and foreign pour point depressants have poor sensitivity to this k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/236C10L1/224C10L1/222C10L1/19
Inventor 高锦鹏牟庆平侯晓峰刘振学栾波姚刚高洪奎
Owner 山东京博众诚清洁能源有限公司