Polyether polyol for fuel additive, and preparation method and application of polyether polyol

A polyether polyol and additive technology, applied in fuel additives, fuel, petroleum industry, etc., can solve problems such as pollution, affecting the quality of polyether polyol, waste of resources, etc., to improve reaction yield, remove carbon deposits in automobiles, The effect of reducing pollution

Active Publication Date: 2020-03-06
武汉帕浦安科技有限公司
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  • Abstract
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Problems solved by technology

Therefore, the amount of special polyether polyols currently on the market has increased sharply. However, the production of existing special polyether polyols generally adopts batch production. Due to the influence of the stirring method in the production process, the raw material epoxide cannot be completely reacted. , so that a part of the unreacted epoxide is discharged in the form of small molecules, discharged into other absorption media, or directly discharged into the environment, which not only causes pollution but also wastes resources, and also affects the quality of polyether polyols

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  • Polyether polyol for fuel additive, and preparation method and application of polyether polyol

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[0026] In a specific embodiment, the present invention provides a kind of preparation method of polyether polyol, and it comprises the steps: a certain amount of starter (monohydric alcohol) is added in the reactor with nitrogen device, Stir evenly, control the temperature between 80-160°C, add a catalyst, and carry out a subsequent reaction to catalyze the addition of a certain proportion of epoxy (propylene oxide, ethylene oxide or a mixture).

[0027] In a specific embodiment, the C 4 -C 18 The monohydric fatty alcohol is n-butanol, octanol, nonanol, n-decyl alcohol, n-hexadecanol, n-stearyl alcohol, or one or more of their respective isomers.

[0028] In a specific embodiment, the participating reactants can be various catalysts conventionally used in this field, preferably one or more of potassium methoxide, sodium methoxide, NaOH, and KOH.

[0029] In a specific embodiment, the epoxides may be various epoxides conventionally used in the art, preferably including one or...

Embodiment 1

[0041] Raw material formula: 500 parts by weight of n-butanol, 2 parts by weight of KOH, and 1600 parts by weight of propylene oxide.

[0042] Preparation method: Add 500 parts by weight of n-butanol into the reaction kettle, replace the air with nitrogen, and raise the temperature to about 140°C after detecting that the oxygen content is ≤200ppm, slowly add 2 parts by weight of KOH, and then pass in 1600 parts by weight of propylene oxide , maintain the pressure at about 0.5MPa, keep the heat and pressure for 2 hours, and then use the phosphoric acid method to neutralize and form phosphate, then dry, filter to remove metals and deionize, and obtain polyether polyols.

[0043]The hydroxyl value of the polyether polyol obtained in this embodiment is 58.6mgKOH / g, and the yield (specific calculation method: the total mass of the discharged material / the total mass of the input material*100%) is 98.97%, and the appearance is a colorless transparent liquid. The kinematic viscosity a...

Embodiment 2

[0045] Raw material formula: 500 parts by weight of n-decanol, 2.5 parts by weight of KOH, and 1600 parts by weight of propylene oxide.

[0046] Preparation method: Add 500 parts by weight of n-decyl alcohol into the reaction kettle, replace the air with nitrogen, and raise the temperature to about 140°C after detecting that the oxygen content is ≤200ppm, slowly add 2.5 parts by weight of KOH, and then pass in 1600 parts by weight of propylene oxide, Maintain the pressure at about 0.5 MPa, heat and hold the pressure for 2 hours, and then use the phosphoric acid method to neutralize to form phosphate, then dry, filter to remove metals and deionize, and then obtain polyether polyol.

[0047] The hydroxyl value of the polyether polyol obtained in this embodiment is 60 mgKOH / g, and the yield (specific calculation method: total mass of discharged materials / total mass of input materials*100%) is 99.0%, and the appearance is a colorless transparent liquid, 25 The kinematic viscosity ...

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Abstract

The invention discloses a preparation method of polyether polyol and an application thereof. In an inert atmosphere, a C4-C18 unitary fatty alcohol, an epoxy compound and a catalyst are added into a reactor together, and reacting is carried out for 2-3 hours at 70-180 DEG C under 0.3-0.6 MPa to obtain the polyether polyol, wherein the weight ratio of the C4-C18 unitary fatty alcohol to the epoxy compound is (1-5):(10-22), and the catalyst is one or more selected from potassium methoxide, sodium methoxide, potassium hydroxide and sodium hydroxide. The polyether polyol can be mixed with polyisobutylene amine, an auxiliary agent, a dispersant, an antioxidation agent, glycerin and petroleum sulfonate to prepare a fuel additive. The preparation method provided by the invention improves purity of polyether polyol, reduces emission of waste gas, avoids air pollution, improves a catalyst, and strengthens operation safety of personnel.

Description

technical field [0001] The invention relates to the field of fuel detergents, in particular to a polyether polyol used for preparing fuel additives, a preparation method and application thereof. Background technique [0002] The problem of automobile exhaust emission is an important problem faced by human beings. Adding polyether polyols to fuel to improve the carbon deposition of automobiles and reduce the emission of toxic and harmful substances in the exhaust gas is an effective way to solve the problem of automobile exhaust emissions. Therefore, the amount of special polyether polyols currently on the market has increased sharply. However, the production of existing special polyether polyols generally adopts batch production. Due to the influence of the stirring method in the production process, the raw material epoxide cannot be completely reacted. , so that a part of the unreacted epoxide is discharged in the form of small molecules, discharged into other absorption me...

Claims

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Application Information

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IPC IPC(8): C08G65/28C10L10/18C10L10/00C10L1/10C10L1/19C10L1/23C10L1/18C10L1/24
CPCC08G65/2609C10L10/18C10L10/00C10L1/10C10L1/1985C10L1/2366C10L2230/081C10L1/1826C10L1/2437Y02A50/20
Inventor 马先坤郭志华马海燕汪万琴
Owner 武汉帕浦安科技有限公司
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