Abstract:
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.
Abstract:
A system controls the strength of acid used as the catalyst in an alkylation unit, which reacts olefins with isoparaffin, in accordance with the average strength of the acid and the anticipated required strength of the acid. A signal corresponding to the average acid strength is developed by analog computers solving equations, hereinafter disclosed, using an output from an acid analyzer corresponding to the density of the acid and a signal corresponding to the volume of caustic used in analyzing the acid. An anticipated required acid strength signal is developed by an analog computer from signals, corresponding to the flow rate and composition of the olefin, from a flow rate sensor and chromatograph means, respectively, in accordance with equations hereinafter disclosed. Another analog computer provides signals for setting the set point of a flow recorder controller in accordance with the average acid strength signal, the anticipated required acid strength signal and equations hereinafter disclosed. The flow recorder controller controls the flow rate acid being discharged from the alkylation unit so as to control the quantity of fresh acid entering the alkylation unit thereby controlling the strength of the acid.
Abstract:
THERE IS PROVIDED O-POLYALKOXYLATED HIGH MOLECULAR WEIGHT N-ALKANONE AND N-ALKANAL OXIMES CORRESPONDING TO THE FORMULA:
R-C(-R'')=N-O-(CH(-R")-CH(-R"'')-O)X-H
BY CONTACTING AN N-PARAFFIN OXIME WITH A BASE, AND THEREAFTER REACTING THE OXIME WITH AN OXIRANE IN THE SUBSTANTIAL ABSENCE OF WATER. THE HIGH MOLECULAR WEIGHT NALKANONE AND N-ALKANAL OXIMES PROVIDED HEREIN ARE USEFUL AS NONIONIC SURFACTANTS, A BIODEGRADABLE DETERGENTS, AS CHEMICAL INTERMEDIATES IN THE PRODUCTION OF ANIONIC DETERGENTS, AS LUBRICATING OIL ADDITIVES, AND AS ANTIRUST AND ANTI-ICING ADDITIVES IN FUELS.
Abstract:
The apparatus includes a chromatograph which samples material and provides a first signal, having peaks corresponding to different constituents of the material, and a pulse signal. Each pulse in the pulse signal coincides with a different peak amplitude occuring in the first signal. In accordance with the signals from the chromatograph, one circuit determines the area under the curve, the curve being the first signal, for each peak in the first signal. Another circuit determines a different baseline for each peak and the area under each baseline. A third circuit receiving signals from the first two circuits effectively subtracts each baseline area fro a peak from the area under the curve associated with the peak to determine a peak area for each peak. The peak area signals are multiplied by thermal conductivity factors to provide signals corresponding to the concentration of the components of the material. A programmer responsive to the pulse signal from the chromatograph controls sample and hold circuits receiving the first signal from the chromatograph to provide peak height voltages. The peak height voltage for each peak is divided into a corresponding percent concentration signal to provide a correction signal. The correction signals are multiplied with the peak height voltages to provide corrected signals corresponding to the concentrations of the components of the material. The corrected signals are normalized by summing the corrected signals and dividing each corrected signal by the resulting sum signal.
Abstract:
A process for producing normal paraffin oximes and, in particular, normal paraffin oximes having from 14 to 50 carbon atoms wherein a C14 to C50 normal paraffin is photochemically reacted in the presence of a halogenated organic solvent with a nitrosating agent under the influence of light in the wavelength of 200 to 760 millimicrons and contacting the reaction product with a polybasic acid such as sulphuric or phosphoric acid. The oximes are subsequently recovered by neutralizing the acid treated product and separating the oxime.
Abstract:
A cascade system of series-connected elements senses and controls liquid levels in these elements and senses and controls flow rates of liquid flowing through the series of elements and also of liquid being received and discharged by the system. A signal corresponding to a change in the flow rate of liquid being received by the system (or discharged by the system) along with at least one acid level change provides control signals (1) to regulate each flow rate of liquid between the elements and (2) to regulate the flow rate of liquid that is to be correspondingly discharged (or received) in accordance with said change.
Abstract:
A process for producing normal paraffin oximes and, in particular, normal paraffin oximes having from 10 to 13 carbon atoms wherein a C10 to C13 normal paraffin is photochemically reacted with a gaseous nitrosating agent where the photolytic reaction is conducted under the influence of a sodium arc lamp producing light in the wavelength of about 380 millimicrons to about 760 millimicrons and preferably where the principal emission spectra is from about 550 to 650 millimicrons.