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Desulfurization of black liquor soap for production of crude tall oil with lower sulfur content

机译:黑液肥皂脱硫,生产硫含量较低的粗妥尔油

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摘要

Black liquor soap is used to produce tall oil with subsequent fractionation. The main distilled products are tall oil rosin and fatty acids, as well as pitch. The presence of sulfur compounds in tall products limits the number of their end-use applications. The existing methods for tall oil and tall oil-derived products desulfurization are expensive, time-consuming and non-universal. Desulfurization of sulfate soap can solve the problem of reducing the sulfur content in the tall oil and its fractions. By treatment with sodium hydroxide + sodium chloride aqueous solution and copper, the total sulfur content of softwood black liquor soap was reduced from 3120 to 197 ppm, and in the case of softwood + hardwood black liquor soap-from 2960 to 423 ppm. Minimum total sulfur contents of the tall oils obtained from desulfurized sulfate soaps were 165 and 410 ppm, respectively.
机译:黑液肥皂被用于生产妥尔油,随后进行分馏。主要蒸馏产品是妥尔油松香和脂肪酸以及沥青。高产品中硫化合物的存在限制了其最终用途的数量。用于妥尔油和源自妥尔油的产品脱硫的现有方法昂贵,费时且不通用。硫酸盐皂的脱硫可以解决降低妥尔油及其馏分中硫含量的问题。通过用氢氧化钠+氯化钠水溶液和铜处理,软木黑液皂的总硫含量从3120降至197 ppm,软木+硬木黑液皂的总硫含量从2960降至423 ppm。从脱硫的硫酸盐皂获得的妥尔油的最小总硫含量分别为165和410 ppm。

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  • 来源
    《Wood Science and Technology》 |2017年第6期|1353-1363|共11页
  • 作者单位

    St Petersburg State Univ Ind Technol & Design, Higher Sch Technol & Energet, Inst Technol, Dept Organ Chem, 4 Ivana Chernykh St, St Petersburg 198095, Russia;

    St Petersburg State Univ Ind Technol & Design, Higher Sch Technol & Energet, Inst Technol, Dept Organ Chem, 4 Ivana Chernykh St, St Petersburg 198095, Russia;

    St Petersburg State Univ Ind Technol & Design, Higher Sch Technol & Energet, Inst Technol, Dept Organ Chem, 4 Ivana Chernykh St, St Petersburg 198095, Russia;

    St Petersburg State Univ Ind Technol & Design, Higher Sch Technol & Energet, Inst Technol, Dept Organ Chem, 4 Ivana Chernykh St, St Petersburg 198095, Russia;

    Arizona Chem, 1201 W Lathrop Ave, Savannah, GA 31415 USA;

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