摘要:
A modular lubrication unit for a rail lubrication distribution system includes a tank, a pump assembly, and a controller. The pump assembly is in fluid communication with the tank and the controller is in communication with the pump assembly for controlling the pump assembly. The controller is enclosed within a panel and the tank is self-contained and movable relative to the panel.
摘要:
According to the invention there is provided a liquid friction control composition characterized as either having a high and positive friction characteristic or a low and neutral friction characteristic, comprising a retentivity agent. The liquid friction control composition may also comprise other components such as a solid lubricant, a wetting agent, a consistency modifier, and a preservative. The liquid friction control compositions may be used to modify the interfacial friction characteristics in sliding and rolling-sliding contact such as steel wheel-rail systems including mass transit and freight systems.
摘要:
A method is described for rendering total liquid product hydroisomerates daylight stable and improving their oxidation stability, which method involves treating the hydroisomerate total liquid product with a Group VIII metal on refractory metal oxide catalyst or Group VIII metal on halogenated refractory metal oxide catalyst under mild conditions, which conditions are a temperature in the range of 170.degree. to 270.degree. C., a pressure in the range of 300 to 1500 psi H.sub.2, 0.25 to 10 v/v/hr and 500 to 10,000 SCF/B,H.sub.2.
摘要翻译:描述了一种使总液体产物加氢异构体日光稳定并提高其氧化稳定性的方法,该方法包括在温和条件下在耐火金属氧化物催化剂或第VIII族金属上在卤代难熔金属氧化物催化剂上处理加氢异构体总液体产物与VIII族金属 ,这些条件是在170℃至270℃的范围内的温度,300至1500psi H 2的压力,0.25至10v / v /小时和500至10,000SCF / B的H 2。
摘要:
It has been found that certain chemicals such as peroxide may be concentrated in an aqueous solution by increasing the pH of a feed liquor to increase the amount of the chemcial in an ionized form, i.e. increase the ionized fraction and then separating the feed liquor by reverse osmosis through a reverse osmosis membrane into a retentate having an enhanced concentration of chemical in ionized form relative to the feed liquor and a permeate having a reduced concentration of chemical in ionized form relative to the feed liquor. The process is particularly suited to increasing the concentration of hydrogen peroxide.
摘要:
A method of brightening mechanical pulps by chelating and thickening to reduce the manganese content of the pulp to less than 30 parts per million and copper content less than 1 parts per million by adding ions preferably magnesium ions as magnesium sulphate MgSO.sub.4 in the amount of 400 to 3,000 ppm Mg ions retained by the pulp based on the oven dry weight of the pulp and thereafter applying a bleaching liquor composed of peroxide as hydrogen peroxide and an alkali as sodium hydroxide having a ratio of alkali to peroxide of between 1--1 and 2-1 in an amount to apply between 1 to 8 percent peroxide based on the oven dry weight of the pulp and containing no added sodium silicate. Preferably the bleaching liquor will contain magnesium sulphate in the amount of about 0.001 to 0.1% based on the oven dry weight of the pulp. The treated pulp is bleached in a bleaching tower for a sufficient time to obtain the desired degree of brightening and thereby produce a pulp having a brightness at least equivalent to that obtained by bleaching using a silicate stabilized bleaching liquor and the equivalent amount of peroxide.
摘要:
A pulp furnish containing predominantly wood-containing fibers (mechanical) and natural calcium carbonate as a filler is formed into a paper in a paper forming section of a paper machine at a neutral pH in the range of 6.7 to 7.5. Bentonite plus a suitable polymer such as a polyacrylamide produces a pulp stock that has exceptionally high drainage characteristics particularly when used with chalk as the filler. The pH of the stock in the headbox is maintained at the desired level of pH 6.7-7.3 by monitoring the pH in the headbox and adjusting the flow of pH reducing and buffering agent, preferably phosphoric acid, into the pulp prior to the headbox to obtain the desired pH in the stock.
摘要:
Lube oils of increased VI are prepared by hydrotreating using bulk Ni/Mn/No or Cr/Ni/Mo sulfide catalysts prepared from ligated, e.g., ethylene diamine, metal complexes. In particular the Ni/Mn/Mo sulfide catalyst is prepared from the oxide, precursor with subsequent sulfiding while the Cr/Ni/Mo sulfide catalyst is prepared from the sulfide precursor in the presence of H.sub.2 S/H.sub.2.
摘要翻译:通过使用由连接的例如乙二胺,金属络合物制备的体积Ni / Mn / No或Cr / Ni / Mo硫化物催化剂进行加氢处理来制备增加的VI的润滑油。 特别地,Ni / Mn / Mo硫化物催化剂由氧化物前体制备,随后硫化,而在H2S / H2存在下由硫化物前体制备Cr / Ni / Mo硫化物催化剂。