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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, and achieve the effect of excellent cold filter point reduction performance, mild reaction conditions, and good sensitivity

Active Publication Date: 2013-06-05
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

Examples

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Embodiment 1

[0029] A synthetic method of diesel pour point depressant, the concrete steps include:

[0030] In a reactor with a stirring device, add 90 mL of toluene and 90 mL of S150 solvent, stir, control the temperature of the water bath to 95 ° C, pass nitrogen, the nitrogen pressure is 0.1 MPa, add 200 g of cetyl alcohol ester and 100 g of acrylamide, divide into two The initiator was added dropwise, and the mixed raw material liquid composed of vinyl acetate and styrene was added dropwise; the initiator was composed of 0.73g tert-butyl peroxide-2-ethylhexanoate and 0.073g azobisisobutyric acid. The mixed raw material liquid is composed of 100 g vinyl acetate and 100 g styrene; 8 g of the initiator is added dropwise for the first time, and 100 g of the mixed raw material liquid composed of vinyl acetate and styrene is added dropwise, and the reaction is carried out for 0.5 hours. The mixed raw material liquid composed of the remaining initiator, vinyl acetate and styrene is then adde...

Embodiment 2

[0033] A synthetic method of diesel pour point depressant, the concrete steps include:

[0034] In a reactor with a stirring device, add 303.0 mL of toluene and 151.5 mL of S150 solvent, stir, control the temperature of the water bath to 60 ° C, pass nitrogen, the nitrogen pressure is 0.05 MPa, add 200 g of behenyl ester and 100 g of diethylene Triamine, add the initiator dropwise twice, and dropwise add the mixed raw material liquid composed of vinyl acetate and styrene at the same time; the initiator is composed of 4g tert-butyl peroxide-2-ethylhexanoate and 2g azodicarbonate It is composed of dimethyl isobutyrate, and the mixed raw material liquid is composed of 100 g of vinyl acetate and 200 g of styrene; for the first time, 4.8 g of an initiator is added dropwise, and 60 g of a mixed raw material liquid composed of vinyl acetate and styrene is added dropwise. , after the reaction for 2 hours, the mixed raw material liquid composed of the remaining initiator, vinyl acetate...

Embodiment 3

[0037]A synthetic method of diesel pour point depressant, the concrete steps include:

[0038] In a reactor with a stirring device, add 95.5 mL of toluene and 63.6 mL of S150 solvent, stir, control the temperature of the water bath to 80 ° C, pass nitrogen, the nitrogen pressure is 0.2 MPa, add 100 g of stearyl alcohol ester and 120 g of triethylene tetrakis Amine, add the initiator dropwise twice, and dropwise add the mixed raw material liquid composed of vinyl acetate and styrene at the same time; the initiator is composed of 3.85g tert-butyl peroxide-2-ethylhexanoate and 1.15g azo Dimethyl diisobutyrate consists of 120g vinyl acetate and 80g styrene; 3.75g of initiator is added dropwise for the first time, and a mixed raw material solution consisting of vinyl acetate and styrene is added dropwise at the same time 50g, after the reaction for 4 hours, the mixed raw material liquid composed of the remaining initiator, vinyl acetate and styrene was added dropwise; the copolymer...

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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 present invention involves a additive, which specifically involves a synthesis method for diesel reduction agents. Background technique [0002] The PPD PPD (Pour POINT DEPRESSANT), also known as the low -temperature flow improvement agent of diesel, is an important fuel additive in the production of diesel.You only need to add a small amount of PPD to diesel to significantly change the crystallization form and structure of wax in diesel, reduce the temperature and strength of the formation structure of the wax formation, effectively reduce its cold filter point, keep diesel with a good low temperature flowSexuality, further expand the storage and transportation methods and use scope of diesel, and improve production flexibility and economic benefits. [0003] The production of paraffin -based crude oil in my country is high, so the diesel content obtained by refining is high. At present, the perception of this kind of diesel at home and abroad is poor....

Claims

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Application Information

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Patent Type & Authority Applications(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
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