Corrosion-inhibition anti-coking agent for furfural refining device

A technology of furfural refining and coking inhibitor, which is applied in the fields of treatment equipment corrosion/fouling inhibition, petroleum industry, hydrocarbon oil treatment, etc. It can solve the problems of not being able to prevent furfural oxidation, not being able to neutralize furfural oxides, etc., and achieve good corrosion inhibition performance , good water solubility

Active Publication Date: 2013-01-23
WUHAN RUNERHUA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the above-mentioned physical anti-corrosion has played a certain role, since this measure can neither prevent furfural oxidation nor neutralize furfural oxides, it cannot fundamentally achieve the purpose of reducing the corrosion of equipment

Method used

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  • Corrosion-inhibition anti-coking agent for furfural refining device
  • Corrosion-inhibition anti-coking agent for furfural refining device
  • Corrosion-inhibition anti-coking agent for furfural refining device

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Experimental program
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Effect test

Embodiment 1

[0038] In this implementation, a corrosion and coking inhibitor for furfural refining equipment is provided, and its composition and weight percentage are:

[0039] Dispersed component 3%;

[0040] Neutral organic amines 9%;

[0041] Water-soluble imidazoline compounds 8%;

[0042] acetylenic alcohols 2%;

[0043] Nitrogen-containing adsorption type corrosion inhibitor compounds 10%;

[0044] Cyclic amine corrosion inhibitor 11%;

[0045] Amine antioxidant 5%;

[0046] Compounding solvent 52%.

[0047] In this embodiment, the dispersing component is polymaleic anhydride in organic carboxylic acid polymers; the neutral organic amines are ethylenediamine in polyethylene polyamines; the water-soluble imidazoline The compound is imidazoline naphthenate; the acetylenic alcohol compound is propynyl alcohol; the nitrogen-containing adsorption type corrosion inhibitor compound is benzotriazole; the cyclic amine corrosion inhibitor is cyclic amine The methylcyclopentadiamine; Th...

Embodiment 2

[0052] In this implementation, a corrosion and coking inhibitor for furfural refining equipment is provided, and its composition and weight percentage are:

[0053] Dispersion component 2%;

[0054] Neutral organic amines 10%;

[0055] Water-soluble imidazoline compounds 10%;

[0056] acetylenic alcohols 3%;

[0057] Nitrogen-containing adsorption type corrosion inhibitor compounds 9%;

[0058] Cyclic amine corrosion inhibitor 10%;

[0059]Amine antioxidant 7%;

[0060] Compound solvent 49%.

[0061] In this embodiment, the dispersing component is polyacrylic acid in organic carboxylic acid polymer; the neutral organic amine is monoethanolamine in alcohol amine; the water-soluble imidazoline compound is naphthenic acid imidazoline; the acetylenic alcohol compound is propynyl alcohol; the nitrogen-containing adsorption type corrosion inhibitor compound is urotropine; the cyclic amine corrosion inhibitor is o-phenylenediamine in aniline; The amine antioxidant is N,N-dibut...

Embodiment 3

[0065] In this implementation, a corrosion and coking inhibitor for furfural refining equipment is provided, and its composition and weight percentage are:

[0066] Dispersion component 2.5%;

[0067] Neutral organic amines 7%;

[0068] Water-soluble imidazoline compounds 15%;

[0069] acetylenic alcohols 3%;

[0070] Nitrogen-containing adsorption type corrosion inhibitor compounds 8%;

[0071] Cyclic amine corrosion inhibitor 12%;

[0072] Amine antioxidant 5%;

[0073] Compound solvent 47.5%.

[0074] In this embodiment, the dispersing component is polymaleic anhydride in organic carboxylic acid polymers; the neutral organic amines are diethylenetriamine in polyethylene polyamines; the water-soluble imidazole The morphine compound is imidazoline naphthenate; the acetylenic alcohol compound is butynediol dipropoxy ether in butynyl alcohol; the nitrogen-containing adsorption type corrosion inhibitor compound is urotropine; The cyclic amine corrosion inhibitor is p-phen...

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Abstract

The invention relates to the field of chemical additives and discloses a corrosion-inhibition anti-coking agent for a furfural refining device. The corrosion-inhibition anti-coking agent for a furfural refining device comprises: by weight, 1 to 5% of a dispersed component, 5 to 10% of one or more neutral organic amines, 8 to 15% of a water-soluble imidazoline compounds, 1 to 5% of alkynol compounds, 8 to 15% of a nitrogen-containing adsorption-type corrosion inhibitor compound, 8 to 15% of cyclammonium corrosion inhibitors, 3 to 8% of an amine antioxidant and 20 to 55% of a compound solvent. The corrosion-inhibition anti-coking agent has effects of oxidation resistance and coking inhibition, can slow down formation of furfural acid and coke (or a resinoid oxide), can neutralize produced furfural acid, can reduce an acid value, can coordinate with furoic acid, can destroy furfural-furfural acid-water ternary azeotrope formation, and can form an anti-corrosion film on a metal surface without influence on quality of a refined oil product.

Description

technical field [0001] The invention belongs to the field of chemical additives, and relates to a corrosion and coking inhibitor, in particular to a corrosion and coking inhibitor suitable for anticorrosion and coking prevention of lubricating oil furfural refining equipment. Background technique [0002] Using furfural as an extractant to remove impurities in lubricating base oil is a mature and effective lubricating oil refining method. However, furfural has active chemical properties and is easy to oxidize, coke and corrode equipment. Therefore, most of the refined lubricating oil installations in my country currently have a production cycle of about one year due to corrosion and coking, and often the equipment pipe wall is blocked by coke. death, tower wall perforation leakage and other accidents occurred. [0003] The oxidation and coking of furfural have seriously affected the long-term safe production of the device, and affected the energy consumption and solvent cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G75/00C10G75/02C10G75/04
Inventor 吴宇锋朱琼徐文刚崔小刚
Owner WUHAN RUNERHUA TECH
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