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    • 3. 发明申请
    • Cleaning agent and method for cleaning heater tubes
    • 清洗剂及清洗加热管的方法
    • US20070149432A1
    • 2007-06-28
    • US11708060
    • 2007-02-20
    • Jeon-Keun OhWha-Sik MinSam-Ryong ParkGi-Won Park
    • Jeon-Keun OhWha-Sik MinSam-Ryong ParkGi-Won Park
    • B08B7/00B08B9/027B08B9/00B08B3/00
    • B24C1/003B24C11/00B24C11/005
    • Disclosed is a cleaning agent for heater tubes, which is capable of eliminating deposits such as soot particulates in tubes installed in industrial heaters that typically use oil, coal or gas. The cleaning agent of the present invention is prepared by formulating a chemical composition comprising ammonium nitrate into pellets. Also, the present invention discloses a method of cleaning heater tubes using the cleaning agent. When being utilized for cleaning the heater tubes, the cleaning agent can improve mechanical and chemical cleaning effects, thus shortening of working time and reducing a required amount of the chemical composition, as well as preventing rapid evaporation of the chemical composition, thus increasing cleaning effect. In addition, the cleaning agent can eliminate the cementing effect of sulfur oxides or vanadic oxides in the heater tubes and thus control stably emission of NOx, by selectively containing other additives including magnesium and urea.
    • 公开了一种用于加热器管的清洁剂,其能够在通常使用油,煤或气体的工业加热器中安装的管中除去诸如烟灰颗粒的沉积物。 通过将包含硝酸铵的化学组合物配制成粒料来制备本发明的清洁剂。 此外,本发明公开了一种使用清洁剂清洗加热器管的方法。 当用于清洁加热器管时,清洁剂可以改善机械和化学清洁效果,从而缩短工作时间并减少所需量的化学成分,以及防止化学成分的快速蒸发,从而增加清洁效果 。 此外,清洗剂可以消除加热器管中的硫氧化物或氧化钒的固结作用,从而通过选择性地包含其它添加剂包括镁和尿素来控制NO x的稳定排放。
    • 6. 发明授权
    • Method for producing feedstocks of high quality lube base oil from
unconverted oil of fuels hydrocracker operating in recycle mode
    • 从循环模式运行的燃料加氢裂化器的未转化油生产高质量润滑油基础油原料的方法
    • US5580442A
    • 1996-12-03
    • US242758
    • 1994-05-13
    • Sook-hyung KwonWha-sik MinYun-kil Lee
    • Sook-hyung KwonWha-sik MinYun-kil Lee
    • C10G7/06C10G7/00C10G45/00C10G45/04C10G47/02C10G65/12C10G69/02C10G69/10
    • C10G65/12
    • A process is disclosed for producing feedstocks for manufacturing high quality lube base oil utilizing unconverted oil, which is produced from a fuels hydrocracker unit. The first step of the process is the distillation of an atmospheric residue under vacuum in a first vacuum distillation unit to produce a vacuum gas oil. The vacuum gas oil is then hydrotreated in a first reaction unit to remove impurities and produce a treated vacuum gas oil. The treated vacuum gas oil is then subjected to hydrocracking in a second reaction unit to yield light hydrocarbons. The light hydrocarbons are then subjected to a series of fractional distillations to separate light oil products and an unconverted oil. All or a fraction of the unconverted oil is fed to a second vacuum distillation unit to produce feedstocks of high quality lube base oil and a remaining portion. The remaining portion and, optionally, a fraction of the unconverted oil is recycled from the second vacuum distillation unit to the second reaction unit.
    • 公开了一种用于生产用于制造高质量润滑油基础油的原料的方法,其利用由燃料加氢裂化器单元生产的未转化油。 该方法的第一步是在真空中在第一真空蒸馏装置中蒸馏大气残留物以产生真空瓦斯油。 然后将减压瓦斯油在第一反应单元中加氢处理以除去杂质并产生经处理的真空瓦斯油。 然后将经处理的减压瓦斯油在第二反应单元中进行加氢裂化以产生轻质烃。 然后轻质烃经受一系列分馏,以分离轻油产物和未转化的油。 将未转化的油的全部或一部分进料至第二真空蒸馏装置以产生高质量润滑油基础油和剩余部分的原料。 剩余部分和任选的未转化油的一部分从第二减压蒸馏单元再循环到第二反应单元。