Process for the removal of mercaptans from liquid hydrocarbon mixtures

    公开(公告)号:GB955836A

    公开(公告)日:1964-04-22

    申请号:GB3967060

    申请日:1960-11-18

    Applicant: BASF AG

    Abstract: Residual mercaptans are removed from liquid hydrocarbon mixtures such as gas oil and cracked and straight-run gasolines by treatment simultaneously with (a) an N-substituted alkyl or aralkyl derivative of p-phenylene-diamine, especially N : N1-di-sec. butyl-, N : N1-dibenzyl-, and N-butyl-N1-isopropyl-p-phenylenediamine, (b) caustic soda solution, (c) air, and (d) up to 2% of compounds of heavy metals whose hydroxides are soluble in excess alkali, particularly compounds of Cu, Co, Ti, V and Cr and especially the sulphates thereof.

    Improvements in the refining of industrial hydrocarbon mixtures

    公开(公告)号:GB900463A

    公开(公告)日:1962-07-04

    申请号:GB2217059

    申请日:1959-06-29

    Applicant: BASF AG

    Abstract: Aromatic p -compounds of the formula Mea(R)x(CO)y, where Me is a group VIA, VIIA or VIII metal, a is from 1 to 4, R is a five or six membered aromatic p -system, x is from 1 to 5 and y is from 0 to 9, are used as catalysts in the refining of hydrocarbon mixtures with an oxygen-containing gas or oxygen-liberating compound which is soluble in hydrocarbons. Hydrocarbon mixtures specified are gasolines, Diesel oils, fuel oils and lubricating oils. The oxy-compound treatment may be used to effect oxidation of sulphur compounds or polymerization, condensation or resinification of nitrogen compounds, e.g. pyrrole, oxygen compounds, e.g. coumarone or indene, olefines and diolefines. The oxygen-containing gas or compound may be air or benzoyl, diacetyl, dilauroyl, dibenzoyl, di-p-toluoyl or di-t-butyl peroxide. Gasolines containing peroxides such as thermal reformates or cracking products which have stood in the air can also be used to provide the oxygen. In the catalyst Me may be manganese, nickel, iron, cobalt, molybdenum or chromium and R may be benzene, toluene, xylene, mesitylene, hexamethylbenzene, mono- or di-ethyl benzene, propylbenzene, diphenyl, polyphenyl methane or ethane, tetrahydrobenzene, anthracene, phenanthrene, pyrene, benzpyrene, coronene, cyclopentadienyl, phenyl- or mono- or di-methyl or ethyl-cyclopentadienyl or fluorene. The catalyst may be subsequently decomposed by heating or irradiation with light, e.g. from mercury vapour lamps. The refined product may be after-treated with active carbon or bleaching earths and filtration or distillation. In examples the catalysts used are dimesitylene chromium, dicyclopentadienyl nickel and cyclopentadienyl manganese tricarbonyl.ALSO:Aromatic p -compounds, MaRx(CO)y where M is a Group VIa, VIIa or VIII metal, a is 1 to 4, R is a five or six membered aromatic p system, x is 1 to 5 and y is 0 to 9 are used as catalysts in refining hydrocarbons (see Group III). M may be magnesia, nickel, iron, cobalt, molybdenum or chromium and R may be benzene; toluene; xylene; mesitylene; hexamethyl-, mono- or diethyl- or propyl-benzene; diphenyl; polyphenyl methane or ethane; tetrahydrobenzene; anthracene; phenanthrene; pyrene; benzpyrene; coronene; cyclopentadienyl; phenyl- or mono- or dimethyl- or ethylcyclopentadienyl; or fluorene. Specific compounds used in examples are dimesitylene chromium, dicylopentadienyl nickel and cyclopentadienyl manganese tricarbonyl of formulae:

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