摘要:
A cracking catalyst used to crack oil to produce gasoline or higher-boiling hydrocarbon fuel is contacted with both (A) antimony or a compound thereof such as antimony tris(0,0-dipropyl phosphorodithioate) and (B) a modifying composition consisting essentially of carbon, hydrogen, nitrogen, and sulfur produced by the treatment of a metal salt of a dialkyl dithiocarbamate with a hydrolyzable germanium (IV) compound such as germanium tetrachloride, the contacting of the catalyst with (A) and (B) prior to, during, or after use of the catalyst in a cracking process being effective in precluding or reducing adverse effects of metals such as nickel, vanadium, and iron.
摘要:
A passivating agent is added to a cracking catalyst which has not been previously treated with the passivating agent by mixing the untreated cracking catalyst with a refractory material which has been previously treated with a passivating agent. At least a portion of the passivating agent is transferred by inter-particle transfer from the treated refractory material to the untreated cracking catalyst.A passivating agent may also be recovered from a previously treated cracking catalyst which has become contaminated by contacting the contaminated cracking catalyst with a refractory material which has not previously been treated with the passivating agent. At least a portion of the passivating agent will transfer by inter-particle transfer from the contaminated catalyst to the refractory material while the contaminants on the contaminated cracking catalyst will not transfer.
摘要:
A cracking catalyst used to crack oil to produce gasoline or higher-boiling hydrocarbon fuel is contacted with both (A) antimony or a compound thereof such as antimony tris(O,O-dipropyl phosphorodithioate) and (B) a modifying composition consisting essentially of carbon, hydrogen, nitrogen, and sulfur produced by the treatment of a metal salt of a dialkyl dithiocarbamate with a hydrolyzable germanium (IV) compound such as germanium tetrachloride, the contacting of the ctalyst with (A) and (B) prior to, during, or after use of the catalyst in a cracking process being effective in precluding or reducing adverse effects of metals such as nickel, vanadium, and iron.
摘要:
A novel cracking catalyst, a method of preparing same, and an improved hydrocarbon cracking process are provided wherein the adverse effects of metals such as nickel, vanadium, iron, copper, and cobalt on the cracking catalys are reduced by contacting the cracking catalyst with a sufficient amount of at least one indium modifier selected from the group consisting of elemental indium and indium compounds free of the element antimony.
摘要:
A used petroleum or hydrocarbon conversion or cracking catalyst having metal contaminants thereon which are leachable by water therefrom is treated with tin and/or indium and/or a compound of tin and/or a compound of indium to reduce leachability of said metal therefrom rendering the thus treated contact mass or catalyst more safe to be disposed of at a landfill.
摘要:
A novel cracking catalyst, a method of preparing same, and an improved hydrocarbon cracking process are provided wherein the adverse effects of metals such as nickel, vanadium, iron, copper, and cobalt on the cracking catalyst are reduced by contacting the cracking catalyst with a sufficient amount of at least one indium modifier selected from the group consisting of elemental indium and indium compounds free of the element antimony.