Antioxidant additive composition, a solution thereof, and a method for improving the storage stability of biodiesel fuel (variants)
申请人:Otkrytoe Aktsionernoe Obschestvo
"Sterlitamaxky Neftekhimichesky Zadov"
公开号:EP2500402A1
公开(公告)日:2012-09-19
This invention relates to the petrochemical industry, in particular, to a method for improving the storage stability of biodiesel fuel via using an antioxidant additive.
A method for improving the storage stability of biodiesel fuel, comprising addition of an alkylphenol-based antioxidant additive via providing an initial solution that contains 6 to 48 mass % of the alkylphenol-based composition comprised of, mass %:
2,6-di-tert-butyl-4-methylcyclohexanone - 0.2 - 0.3;
2,6-di-tert-butylphenol - 0,7 - 6.0;
2-sec-6-tert-butyl-p-cresol- 1.5 - 5.0;
4,6-di-tert-butyl-o-cresol - 3.0 - 8.0;
2,4-di-tert-butylphenol - 0.3 - 0.5;
2,4-di-tert-butyl-6-dimethylminomethylphenol- 2.0 - 5.0;
4,4-methylene-bis(2,6-di-tert-butylphenol) - 0.1 - 0.3; and
2,6-di-tert-butyl-4-methylphenol - to the balance,
dissolved in biodiesel fuel; and adding the solution of the composition to the biodiesel fuel to reach a concentration of the composition of from 0.002 to 1.6 mass % based on the entire biodiesel fuel solution.
The technical result consists of a considerable improvement of the storage stability of biodiesel fuel with a reduced amount of the antioxidant additive. The antioxidant additive used inhibits precipitation during the shelf life of biodiesel fuel for a longer period of time.
本发明涉及石油化工行业,尤其涉及一种通过使用抗氧化添加剂提高生物柴油燃料储存稳定性的方法。
一种提高生物柴油燃料贮存稳定性的方法,包括通过提供一种初始溶液来添加烷基酚基抗氧化添加剂,该初始溶液含有 6 至 48 质量%的烷基酚基组合物,该组合物包括(质量%): 1:
2,6-二叔丁基-4-甲基环己酮 - 0.2 - 0.3;
2,6-二叔丁基苯酚 - 0,7 - 6.0;
2-sec-6--tert-butyl-p-cresol- 1.5 - 5.0;
4,6-二叔丁基邻甲酚 - 3.0 - 8.0;
2,4-二叔丁基苯酚 - 0.3 - 0.5;
2,4-二叔丁基-6-二甲基氨基甲基苯酚- 2.0 - 5.0;
4,4-亚甲基-双(2,6-二叔丁基苯酚) - 0.1 - 0.3;以及
2,6-二叔丁基-4-甲基苯酚 - 其余、
溶解于生物柴油燃料中;并将该组合物溶液加入生物柴油燃料中,使该组合物在整个生物柴油燃料溶液中的浓度达到 0.002 至 1.6 质量%。
技术成果包括在减少抗氧化添加剂用量的情况下,显著提高生物柴油燃料的储存稳定性。所使用的抗氧化添加剂可在生物柴油燃料的保质期内长时间抑制沉淀。