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Polyether amine, preparation method thereof and application of polyether amine in gasoline detergent

A technology of polyetheramine and polyetherketone, which is applied in the field of small molecular weight polyetheramine, can solve the problems of long reaction time, low conversion efficiency in the ammoniation process, and wide molecular weight distribution of polyetheramine, so as to reduce the possibility of ether chain breakage , Shorten the reaction time at high temperature, the effect of high molecular weight consistency

Inactive Publication Date: 2019-11-22
天津中石化悦泰科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But still there are two main problems as follows: (1) the ammoniation process conversion efficiency is low, in the prior art, polyether alcohol only has 40% to the conversion rate of polyetheramine under the effect of amine group / ammonia, hydrogen and catalyst %, in order to improve the conversion rate, the operator increases the amount of amine group / ammonia gas, but the contribution to the improvement of the conversion rate is limited; (2) the ammoniation process requires a high temperature and high pressure environment, and the reaction time is long, the production process The disordered breakage of polyether chains in the environment makes the molecular weight distribution of the product polyetheramine wider, which directly affects its application in gasoline detergents.

Method used

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  • Polyether amine, preparation method thereof and application of polyether amine in gasoline detergent
  • Polyether amine, preparation method thereof and application of polyether amine in gasoline detergent
  • Polyether amine, preparation method thereof and application of polyether amine in gasoline detergent

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Embodiment 1-5

[0034] The preparation of embodiment 1-5 polyether alcohol

[0035] In the autoclave, add 100 parts of nonylphenol, KOH accounting for 0.2% of the weight of nonylphenol, replace the air in the autoclave with nitrogen 4 times, raise the temperature to 120°C, and dehydrate for 1h in a vacuum environment below -0.08MPa, the reaction forms Alkaline system of potassium nonylphenate; gradually add propylene oxide to the above alkaline system, the molar ratio of propylene oxide to nonylphenol is (11-20):1, at a pressure of 0.3MPa and a temperature of 130°C Stir under the conditions for 1 hour, polymerization reaction occurs, after the reaction, a crude polyether product is generated; after cooling to 80°C, add 85%wt phosphoric acid for neutralization to a pH value of 4, and add magnesium silicate for decolorization and adsorption; vacuum distillation Dehydration filtration makes polyether alcohol, molecular formula sees formula I, wherein, m=11-19, the molecular weight of polyether a...

Embodiment 6-18

[0041] The preparation of embodiment 6-18 polyether ketone and polyether amine

[0042] S2: Preparation of polyetherketone

[0043] In the high-pressure reactor, the main catalyst and the auxiliary catalyst are loaded according to the weight ratio (1-10): (0-1), wherein the main catalyst is a Raney nickel catalyst with different nickel-aluminum ratios, and 100 parts of S1 step obtained For polyether alcohol, replace the air in the kettle with nitrogen for 4 times, vacuumize, and simultaneously feed the hydrogen gas flow and the propylene gas flow through the two pipelines in the lower part of the reaction kettle. The flow ratio of the two gas flows is 1:2, and the two The flow rate of each gas flow should ensure that the vacuum degree of the reactor can reach below -0.08MPa, adjust the stirring speed to 500r / min, heat up to 200-260°C, and react for 5h. After the reaction is completed, the reactant is purged with nitrogen to obtain Crude polyether ketone, the crude polyether k...

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Abstract

A preparation method of polyether amine comprises the following main steps: preparation of polyether alcohol, preparation of polyether ketone and preparation of polyether amine; the preparation of polyether amine from polyether alcohol is divided into two steps of dehydrogenation and ammoniation hydrogenation, the two steps can be carried out in the same reaction kettle, and the catalysts are thesame, i.e., reaction equipment does not need to be additionally arranged; aiming at the two steps, different main catalysts and cocatalysts are designed, so that the conversion rate of each step can be enhanced in a targeted manner; furthermore, on the premise of ensuring the conversion rate, the reaction temperature and pressure of each step are adjusted, and the possibility of ether chain breakage is reduced as much as possible; finally, the polyether amine with the molecular weight of 900 to 1300 and high molecular weight consistency is prepared.

Description

technical field [0001] The invention relates to the technical field of gasoline detergents, in particular to a low molecular weight polyetheramine, its preparation method and its application in gasoline detergents. Background technique [0002] Gasoline detergents are gasoline additives that can effectively improve the performance of automobile engines and control pollutant emissions. In commercially available gasoline detergents, the main cleaning components are organic polymer amine compounds, such as polyetheramines. The C-O-C bond in polyetheramine is easy to crack at high temperature, which can effectively solve the deposits of fuel nozzles and intake valves, and can effectively inhibit the formation of deposits in the combustion chamber of the engine. Therefore, it has become a hot direction for the development of gasoline detergents. [0003] The research on this functional chemical polyetheramine abroad is earlier, the technology is relatively mature, and large-scale...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/32C08G65/333C08G65/325C08G65/28C10L1/2387
CPCC08G65/2612C08G65/32C08G65/3255C08G65/33306C10L1/2387
Inventor 钟亮
Owner 天津中石化悦泰科技有限公司
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