摘要:
Olefin complexing reagents comprising Cu(I) carboxylate/BF.sub.3 adducts in aromatic solvents and a method of preparation therefor, and use of said reagents in the separation of olefins from paraffins are provided.
摘要:
This invention comprises improvements to processes for the catalytic cracking of hydrocarbon feedstocks. One such improvement to catalytic cracking processes provides compositions comprising metals passivating agents having an increased degree of stability. These compositions comprise aqueous suspensions of antimony by vinyl copolymers, aqueous suspensions of antimony oxide by diesters of phosphoric acid, or aqueous suspensions of antimony oxide by cellulose derivatives. Another improvement to catalytic cracking processes provides a process for reducing the viscosity of liquid suspensions of metals passivating agents without substantially reducing the stability of the liquid suspension by the utilization of at least two different particle ranges of metals passivating agents. A further improvement to catalytic cracking processes provides an efficient utilization of metals passivating agents by introducing the selected agent into the catalyst regeneration cycle of a catalytic cracking unit.
摘要:
Iron (II) hexacyanocobaltate and ruthenium (III) hexacyanocobaltate have been found to be useful in the catalytic hydrogenation of organic materials.
摘要:
Styrene is recovered from a styrene-rich stream by complexing with a copper(I) sulfonate. The complex is treated to displace the styrene from the complex.
摘要:
Furan concentrates containing deleterious unsaturated contaminants including sulfur compounds are purified prior to hydrogenation by contacting with zinc oxide either prior to or subsequent to separation of high boiling materials from the concentrate with the result that the furan concentrate is hydrogenated to high purity product comprising either furan and saturated materials or tetrahydrofuran and saturated materials with extended hydrogenation catalyst life. In a preferred embodiment, the furan concentrate is obtained as the by-product stream from hydrocarbon oxidative dehydrogenation processes and is subjected to distillation to remove therefrom materials boiling above about 80.degree. C prior to contacting with zinc oxide and hydrogenation.
摘要:
In a process for the re-refinement of used lubricating oil containing fuel fraction, an upgraded fuel fraction is provided by combining fuel fraction with demetallized lubricating oil prior to the hydrotreatment stage.
摘要:
In a process for producing an essentially ash-free oil stock from a lubricating oil containing ash forming components comprising reacting the oil with an aqueous ammonium salt capable of reacting with the ash-containing components and heating the thus treated oil at a temperature in the range of about 300.degree. C. to about 420.degree. C. to increase the amount of the ash-forming components removed, the improvement comprising not exposing the oil to a temperature greater than 200.degree. C. before the oil is passed into a large volume of the oil already at a temperature in the range of about 300.degree. C. to about 400.degree. C.
摘要:
A process and apparatus for separating monoolefins from diolefins comprising contacting a mixture of monoolefins and diolefins with a complexing agent selected from the group consisting of copper(I) salts of sulfonic acids and copper(I) salts of dialkylphosphates and a suitable hydrocarbon solvent for the complexing agent under such conditions that the monoolefins and diolefins form complexes with the complexing agent. The monoolefin complex can be separated from the diolefin complex based either on the relative solubilities of the two complexes in the hydrocarbon solvent for the complexing agent or based on the relative strengths of the two complexes.
摘要:
In a process for reducing the concentration of ash-forming components in a lubricating oil wherein a feedstream comprising said lubricating oil and an aqueous ammonium salt treating agent is continuously passed into a first reaction zone wherein said treating agent reacts with ash-forming components in said oil and an effluent is continuously withdrawn from said first reaction zone and subjected to filtration after removal of water therefrom, the improvement comprising introducing said feedstream into said first reaction zone by passing said feestream through a centrifugal pump along with portions of the contents of said first reaction zone.
摘要:
A method and catalysts for isomerization which involves contacting a feedstream with hydrogen and with various supported catalysts of metallic arsenides and antimonides, with carbon monoxide being optionally introduced into the reaction as a modifier.