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Corrosion inhibitor for alcohol ether fuel and preparation method for corrosion inhibitor

A corrosion inhibitor and fuel technology, which is applied in the directions of fuel additives, fuels, and liquid carbon-containing fuels, can solve the problems of unfriendly combustion products, reduced adhesion, and reduced anticorrosion performance, and achieves obvious anticorrosion effect. Less and less cost effective

Active Publication Date: 2013-10-23
CRPC INNOVATION ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In alcohol ether fuels, the ability of these molecules to adhere to the metal surface is reduced, and the anti-corrosion performance will also be reduced
In addition, these additives mostly contain nitrogen and phosphorus elements, and the combustion products are not friendly enough to the environment.

Method used

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  • Corrosion inhibitor for alcohol ether fuel and preparation method for corrosion inhibitor
  • Corrosion inhibitor for alcohol ether fuel and preparation method for corrosion inhibitor
  • Corrosion inhibitor for alcohol ether fuel and preparation method for corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 24kg cyclohexanone, 8.25kg styrene, 0.12kg benzoyl peroxide, 1.05kg α-methylstyrene dimer in a stainless steel polymerization kettle with a reflux device, then add 7.75kg maleic anhydride, 25 rpm / min stirring and dissolving, the oil bath was heated to 104°C to start the reaction, and the reaction was completed for 6 hours to obtain 39.2 kg of maleic anhydride-styrene oligomer with a weight average molecular weight ranging from 1920 to 2160.

[0020] Add 38.5kg of maleic anhydride-styrene oligomer into the stirred tank, then add 0.70kg of water, 20kg of polypropylene glycol 600, heat to 78°C, stir for 3 hours, then connect the decompression device, and keep the vacuum under 100mmHg Under certain conditions, heat up to 90°C to distill out cyclohexanone and recover it, remove the vacuum distillation device, add 20kg of polypropylene glycol 2000, 45.3kg of ethylene glycol monobutyl ether, stop heating, stir and cool down to room temperature to obtain alcohol ether 99.6...

Embodiment 2

[0025] Add 170kg cyclohexanone, 67kg styrene, 0.78kg benzoyl peroxide, 7.8kg α-methylstyrene dimer in a stainless steel polymerization kettle with a reflux device, then add 63kg maleic anhydride, 30 rpm Stir to dissolve, heat the oil bath to 101°C to start the reaction, react for 6 hours, and complete the reaction to obtain 302 kg of maleic anhydride-styrene oligomer with a weight average molecular weight ranging from 1850 to 2100.

[0026] Add 284.5kg of maleic anhydride-styrene oligomer into the stirred tank, then add 5.4kg of water, 180kg of polypropylene glycol 600, heat to 73°C, stir and react for 3 hours, then connect the decompression device, when the vacuum degree is lower than 100mmHg Under certain conditions, raise the temperature to 90°C to distill out cyclohexanone and recover it, remove the vacuum distillation device, add 224.6kg of polypropylene glycol 2000, 470kg of ethylene glycol monobutyl ether, stop heating, stir and cool down to room temperature to obtain al...

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Abstract

The invention relates to a corrosion inhibitor for alcohol ether fuel. A method for preparing the corrosion inhibitor comprises the following steps of: performing polymerization reaction of maleic anhydride and styrene by taking an alpha-methyl styrene dipolymer as a molecular weight regulator in a cyclohexanone solvent to obtain a maleic anhydride-styrene low polymer; adding water and polypropylene glycol 600, heating, distilling under reduced pressure and recovering cyclohexanone; and adding polypropylene glycol 2000 and ethylene glycol monobutyl ether to obtain the corrosion inhibitor. The corrosion inhibitor for the alcohol ether fuel has a simple preparation process, does not contain elements such as nitrogen, sulfur, phosphorus and the like which are harmful to environment, and is low in cost, high in intermiscibility with multiple oils and little in addition amount; and compared with the common corrosion inhibitor sold in markets, the corrosion inhibitor has an obvious anti-corrosion effect in various oils.

Description

technical field [0001] The invention belongs to the technical field of metal anticorrosion, and relates to a corrosion inhibitor and a preparation method thereof. The corrosion inhibitor of the invention is suitable for being added to alcohol ether fuels, and is also suitable for metal corrosion of gasoline and diesel oil. Background technique [0002] The world's energy reserves are becoming increasingly scarce and environmental problems are becoming more and more serious. Energy and environmental issues have attracted great attention from all countries in the world. Therefore, seeking new clean alternative energy has become a global issue. my country's economy is developing at a high speed. In 2010, my country's automobile production reached 17 million, and its sales volume reached 15 million. It has become the world's largest automobile manufacturer and consumer. By the end of 2010, the number of motor vehicles in my country has exceeded 195 million, of which the number ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L10/04C10L1/196C10L1/185C10L1/198
Inventor 庞尔国李永浩吴耀曲常永龙任君郭芬
Owner CRPC INNOVATION ENERGY
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