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Reactivation of spent liq. caustic phthalocyanine catalysts - used for sweetening hydrocarbons, by adsorbent treatment and phthalocyanine addn.
Reactivation of spent liq. caustic phthalocyanine catalysts - used for sweetening hydrocarbons, by adsorbent treatment and phthalocyanine addn.
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机译:重新激活用过的液体。苛性酞菁催化剂-用于通过吸附剂处理和酞菁加成剂使烃脱硫的方法。
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摘要
Spent liq. phthalocyanine catalysts which have been used for sweetening hydrocarbon streams are regenerated by percolating through a bed of activated charcoal or gamma-Al2O3 at 0-300 degrees C and 1-100 atm. with a LHSV of 0.5-10, and then adding a phthalocyanine. Catalysts comprises a Co, V, Fe, Cu, Ni or Cr phthalocyanine dispersed in a caustic medium contg. a hydroxide of Na, K, Ca, Rb, Sr, Cs, Ba, Fr, Li or Be. Process avoids disposal of the spent caustic. The phthalocyanine is pref. in the form of a sulphonated deriv. esp. the tetrasulphonate.
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