摘要:
Highly selective oxidative coupling of aromatic methyl groups, such as coupling toluene to DPE, is effected under mild, liquid phase conditions with a peroxodisulfate without expensive metal ion catalysts, in presence of substantial amounts, preferably equimolar, of methyl, ethyl or benzyl substituted quaternary ammonium salts. A continuous process is possible by electrolytic regeneration of the spent oxidant.
摘要:
A hydrocarbon phase separated from a hydrocarbon conversion process is solvent extracted with anhydrous liquid HF to separate metal pentafluoride which is carried over into the hydrocarbon phase. The extract of HF and metal fluoride is then combined with the catalyst phase (HF and metal pentafluoride) and stripped with hydrogen to reduce the molar ratio of HF to metal pentafluoride to the level that HF + metal pentafluoride catalyst is utilized in the hydrocarbon conversion process. The metal pentafluoride is TaF.sub.5 and/or NbF.sub.5 and the hydrocarbon conversion may involve isomerization, alkylation with olefins and reactions of a paraffin with another paraffin.
摘要:
A unitary reactor system for the alkylation of benzene with olefins. The hydrocarbon reactants are sprayed horizontally from a plurality of openings in a number of vertical conduits which extend upward into a lower portion of the vessel. The conduits are surrounded by a vertical reaction tube having a circular catalyst inlet at its bottom end and which contains a mixing means located above the conduits. A hydrocarbon phase is retained in the upper portion of the vessel and an acid phase surrounds the reaction tube, with the interface of the two liquid phases being maintained above the open upper end of the reaction tube.
摘要:
1. APPARATUS FOR CONTROLLING THE LEVELS OF A LIQUID IN A PLURALITY OF VESSELS IN A SYSTEM RECEIVING AND DISCHARGING THE LIQUID, SAID VESSELS BEING CONNECTED IN SERIES BY MEANS FOR CONVEYING THE LIQUID FROM VESSEL TO VESSEL, COMPRISING A PAIR OF CONTROL DEVICES, ONE CONTROL DEVICE IS CONNECTED TO A FIRST VESSEL OF THE PLURALITY OF VESSELS AND IS RESPONSIVE TO A FIRST CONTROL SIGNAL TO CONTROL THE FLOW RATE OF THE LIQUID BEING RECEIVED BY SYSTEM AND ENTERING THE FIRST VESSEL, THE OTHER CONTROL DEVICE IS CONNECTED TO A LAST VESSEL OF THE PLURALITY OF VESSELS AND IS RESPONSIVE TO A SECOND CONTROL SIGNAL TO CONTROL THE LIQUID LEAVING THE LAST VESSEL AND BEING DISCHARGED FROM THE SYSTEM, MEANS CONNECTED TO EACH VESSEL FOR SENSING THE LIQUID LEVEL IN THE VESSEL AND PROVIDING A LIQUID SIGNAL CORRESPONDING THERETO, MEANS CONNECTED TO THE ONE CONTROL DEVICE TO AFFECT THE FLOW RATE OF THE LIQUID, BEING RECEIVED BY THE SYSTEM AND ENTERING THE FIRST VESSEL, MEANS CONNECTED TO EACH CONVEYING MEANS FOR SENSING THE FLOW RATES OF THE LIQUID MOVING BETWEEN VESSELS AND PROVIDING FLOW RATE SIGNALS CORRESPONDING THERETO, MEANS CONNECTED TO EACH CONVEYING MEANS AND TO THE FLOW RATE SENSING MEANS FOR AFFECTING THE FLOW RATES OF THE LIQUID BETWEEN VESSELS IN ACCORDANCE WITH COMMAND SIGNALS AND THE FLOW RATE SIGNALS, AND CIRCUIT MEANS CONNECTED TO THE FIRST CONTROL SIGNAL MEANS, TO THE LIQUID LEVEL SENSING MEANS, TO THE OTHER CONTROL DEVICE AND TO THE FLOW RATE AFFECTING MEANS FOR PROVIDING THE SECOND CONTROL SIGNAL TO THE OTHER CONTROL DEVICE IN ACCORDANCE WITH THE FIRST CONTROL SIGNAL AND AT LAEST ONE LIQUID LEVEL SIGNAL AND FOR PROVIDING THE COMMAND SIGNALS TO THE FLOW RATE AFFECTING MEANS IN ACCORDANCE WITH THE FIRST CONTROL SIGNAL AND AT LEAST ONE LIQUID LEVEL SIGNAL SO AS TO CONTROL THE LIQUID LEVELS IN THE PLURALITY OF VESSELS.
摘要:
OLEFINS AND ISOPARAFFINS ARE ALKYLATED IN THE PRESENCE OF AN HF CATALYST. THE REACTOR EFFLUENT IS PASSED TO A SETTLING ZONE. THE HYDROCARBON PHASE IS FRACTIONATED TO RECOVER AN ALKYLATE PRODUCT. THE ACID PHASE IS RECYCLED TO THE REACTOR. A PORTION OF THE RECYCLED ACID IS PASSED TO A PURIFICATION COLUMN FOR REMOVAL OF ACID SOLUBLE OIL. STRIPPING VAPOR IS INTRODUCED INTO THE PURIFICATION COLUMN BOTH ABOVE AND BELOW THE SURFACE OF SAID SOLUBLE OIL ACCUMULATED THEREIN.
摘要:
A catalyst composition is manufactured by admixing a hydrocarbyl aluminum halide of a nickel compound of the formula (R.sub.1 COO)(R.sub.2 COO)Ni, where R.sub.1 is hydrocarbyl with at least 5 carbon atoms and R.sub.2 is haloalkyl of 1-3 carbon atoms. Olefins such as ethylene, propylene and butenes can be oligomerized, for example, dimerized and trimerized, with the above catalyst composition.
摘要:
An apparatus for the catalytic conversion of a hydrocarbon stream with a mineral acid catalyst comprising a vessel divided into an upper and lower chamber by an imperforate plate. The imperforate plate has a plurality of standpipe means connected thereto whereby hydrocarbon can pass into the upper chamber from hydrocarbon inlet means located in the lower chamber. A perforated plate is located in the upper chamber above the imperforate plate having flow guide conduits axially aligned above each of the standpipe means. A catalyst inlet means is located intermediate the imperforate and perforate plates and an emulsion outlet is located in the upper chamber. The flow guide conduits serve to promote eduction of acid-catalyst into the flow guide conduits by a high velocity hydrocarbon stream emitted from openings in said standpipe means, and to contain and confine the hydrocarbon stream and prevent contact of a resulting acidhydrocarbon emulsion with previously formed emulsion until the hydrocarbons and acid are thoroughly mixed and the hydrocarbons at least partially reacted.