Preparation method of diesel oil low temperature flow properties improver

A low-temperature flow and improver technology, applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., to achieve the effect of reducing the cloud point of diesel oil, good sensitivity, and excellent use effect

Inactive Publication Date: 2011-09-21
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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So far, this additive has not b

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  • Preparation method of diesel oil low temperature flow properties improver

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Embodiment 1

[0014] (1) Add 200ml of xylene to a 500ml esterification kettle, then add 81g of ethylene-vinyl acetate-vinyl alcohol copolymer, 4g of dodecylbenzenesulfonic acid, and 100g of lauric acid, and heat to reflux at 135°C to react After 10 hours, a mixture with a degree of esterification of 60% was obtained, which was distilled under reduced pressure at a vacuum of 3 kilopascals, and 215 g of C 9 , After stirring evenly, under cooling, add about 8g of tetradecylamine to obtain component A.

[0015] (2) Add 80 g of acrylic acid and 180 g of dodecanol to 1 g of concentrated sulfuric acid, add 5 g of hydroquinone, heat up to 120° C., and react for 5 hours. Add 84g of hexene-1 and 100g of maleic anhydride, heat up polymerization for 4.5 hours, add 213g of tetradecylamine, react at 180°C for 1 hour to form component B.

[0016] (3) Add solvent C to component A 9 , slowly add component B, heat and stir for 1 hour, slowly add component dioctyl phosphate, heat at 40-60°C and stir for 1 h...

Embodiment 2

[0018] (1) Add 180ml of xylene into a 500ml esterification kettle, then add 85.5g of ethylene-vinyl acetate-vinyl alcohol copolymer, 3g of p-toluenesulfonic acid, 50g of lauric acid and 72g of stearic acid, and heat to 140°C Reflux and react for 10 hours to obtain a mixture with a degree of esterification of about 55%, distill under reduced pressure at a vacuum of 2.5 kPa, add 205 g of C 9 , After stirring evenly, under cooling, add about 8g of decylamine to obtain component A.

[0019] (2) 80 g of acrylic acid and 214 g of myristyl alcohol were added with 1 g of concentrated sulfuric acid, 5 g of hydroquinone, heated to 130° C., and reacted for 5 hours. Add 80g of hexene-1 and 90g of maleic anhydride, heat up polymerization for 4 hours, add 160g of decylamine, react at 175°C for 1 hour to form component B.

[0020] (3) Add C to component A 9 , slowly add component B, heat and stir for 1 hour, slowly add dioctyl phosphate, heat and stir for 1 hour, that is, composite diesel ...

Embodiment 3

[0022] (1) Add 180ml of xylene into a 500ml esterification kettle, then add 80g of ethylene-vinyl acetate-vinyl alcohol copolymer, 3g of p-toluenesulfonic acid, and 143g of stearic acid, heat to reflux at 140°C, and react for 12 hours , to obtain a mixture with a degree of esterification of about 70%, distill under reduced pressure at a vacuum of 3 kPa, add 195gC 9 After stirring evenly, under cooling, add about 6g of hexadecylamine to obtain component A.

[0023] (2) 80 g of acrylic acid and 180 g of lauryl alcohol were added to 1 g of concentrated sulfuric acid, 5 g of hydroquinone was added, the temperature was raised to 120° C., and the reaction was carried out for 5 hours. Add 80g of hexene-1 and 100g of maleic anhydride, heat up polymerization for 5 hours, add 214g of tetradecylamine, react at 185°C for 1 hour to form component B.

[0024] (3) Add C to component A 9 , slowly add component B, heat and stir for 1 hour, slowly add dioctyl phthalate, heat and stir for 1 ho...

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Abstract

The invention relates to a preparation method of diesel oil low temperature flow properties improver. The method includes the following steps that: in the presence of a catalyst, ethylene-the vinyl acetate-vinyl alcohol copolymer and C8-C18 fatty acids are subjected to esterification at a temperature of from 130 to 160 DEG C to obtain intermediate products; alicyclic amine is added to carry out in situ amination so as to obtain ingredient A; acrylic acid reacts with high carbon of fatty alcohols to produce acrylate high esters, wherein a catalyst is concentrated sulfuric acid and a polymerization inhibitor is hydroquinone; acrylate high esters reacts with alpha olefins, maleic anhydride and alicyclic amine to produce ingredient B, wherein the reactants are in equimolar ratio; ingredient C is phosphoric acid diisooctyl ester or dicapryl phthalate; the improver is mixed by the following ingredients: by weight, 40-45% of the ingredient A, 35-40% of C9, 15-20% of the ingredient B, and 5-8% of the ingredient C. Cold filter plugging point (CFPP) and condensation point of the diesel oil can be effectively reduced. Yield of light oil can be raised and cloud point of the diesel oil can be reduced. The effects on the diesel oil containing high wax are obvious.

Description

Technical field: [0001] The invention relates to a preparation method of a diesel oil low-temperature fluidity improver. Background technique: [0002] Diesel low temperature flow improver is a fuel additive commonly used in domestic and foreign diesel production. The most commonly used diesel oil pour point depressant has obvious effects on improving the low-temperature flow performance of diesel oil, increasing the production of diesel oil, and improving the economic benefits of refineries. Because of this, the research and application of diesel pour point depressants have developed rapidly in recent years. However, this kind of additive has good susceptibility in low-point diesel oil, but poor susceptibility to diesel oil with high wax content. As the composition of crude oil becomes heavier, the fraction of diesel oil becomes narrower and heavier, and its popularization and application is restricted. certain restrictions. In addition, all pour point depressants only c...

Claims

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Application Information

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IPC IPC(8): C10L1/26C10L1/236C10L1/19C10L1/16C10L10/14C08F220/18C08F210/00C08F222/06
Inventor 王大明史君朱景利姜明才王健韩非王静江王金平于贵春崔月
Owner PETROCHINA CO LTD
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