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| Number | Title | Issue Date |
| 7318970 | Architectural hierarchy of control for a fuel processor A control technique for use in a fuel processor is disclosed. In one aspect, a control system includes a subsystem manager controller the operation of a respective physical subsystem for each of a plurality of physical subsystems in the fuel processor. The subsystem... | 01/15/2008 |
| 7153694 | Quantitative method for hydrocarbon analysis A method for quantitative determination of hydrocarbon species in a hydrocarbon sample is disclosed. The method uses Townsend Discharge Nitric Oxide Chemical Ionization Gas Chromatography/Mass Spectrometry. ... | 12/26/2006 |
| 7149590 | Kiln control and upset recovery using a model predictive control in series with forward chaining A method for controlling a non-linear process includes the steps of first providing a controller that is operable to receive inputs representing measured variables of the process and predicting on an output of the controller predicted control values for manipulatibl... | 12/12/2006 |
| 7117046 | Cascaded control of an average value of a process parameter to a desired value At least one of the multiple process parameters (MPPs) is a controllable process parameter (CTPP) and one is a targeted process parameter (TPP). The process also has a defined target limit (DTV) representing a first limit on an actual average value (AAV) of the TPP.... | 10/03/2006 |
| 7073182 | OPCMessenger A connector software that connects on-line interfaces used in automation systems with transaction processing for distribution of data over a global communication network comprising a configurable connector software running on memory in a computer, a configurable con... | 07/04/2006 |
| 7047089 | Kiln thermal and combustion control A method and apparatus for controlling a non-linear mill. A linear controller is provided having a linear gain k that is operable to receive inputs representing measured variables of the plant and predict on an output of the linear controller predicted control value... | 05/16/2006 |
| 7024252 | Kiln thermal and combustion control A method and apparatus for controlling a non-linear mill. A linear controller is provided having a linear gain k that is operable to receive inputs representing measured variables of the plant and predict on an output of the linear controller predicted control value... | 04/04/2006 |
| 6979397 | Dynamic particle removing flushing system A portable, controllable fluid filtration flushing system with automated feedback, remote access, and documented operation is designed for hydraulic fluid or the like and has a base mounted on wheels for transporting the system. A filtration system mounted on the ba... | 12/27/2005 |
| 6954683 | Method and apparatus for performing diagnostics in a control loop of a control valve Method and apparatus for performing diagnostics in a pneumatic control loop for a control valve. Pressure and displacement sensors normally provided with a positioner are used to detect operating parameters of the control loop. A processor is programmed to receive f... | 10/11/2005 |
| 6678584 | Method and apparatus for performing diagnostics in a control loop of a control valve Method and apparatus for performing diagnostics in a pneumatic control loop for a control valve. Pressure and displacement sensors normally provided with a positioner are used to detect operating parameters of the control loop. A processor is programmed t... | 01/13/2004 |
| 6640161 | Method for operating a steam stripped fractionation column A method of operation of a steam stripped fractionation column by using a computer to process the relevant operating parameters of the column to determine the undesirable approach to a possible flooding condition.... | 10/28/2003 |
| 6611735 | Method of predicting and optimizing production A process for the prediction and the optimization of the output of a plant producing products form incoming materials. The incoming materials are classified according to various physical characteristics and costs. The desired or ordered products are also ... | 08/26/2003 |
| 6484088 | Fuel optimization system with improved fuel level sensor A system for monitoring fuel consumption and optimizing refueling of a vehicle. The system includes a fuel level sensor designed to be mounted on a fuel tank. The fuel sensor has a transducer, such as an ultrasonic transducer, for generating a distance si... | 11/19/2002 |
| 6408225 | Device and method for balancing the weight on a robot arm The invention relates to a device for balancing the weight carried by a robot arm of a robot. Said device comprises a fluid spring, rotably a pneumatic spring, and a control device for controlling the movements of the robot. The device is characterized by... | 06/18/2002 |
| 6317654 | Control of crude refining by a method to predict lubricant base stock's ultimate lubricant preformance A model to predict the quality of a lubricant base stock for use in a plurality of products having a plurality of viscosities. The compositional model is based on a quantitative analysis of key compositional parameters and performance criteria for the plu... | 11/13/2001 |
| 6295485 | Control of lubricant production by a method to predict a base stock's ultimate lubricant performance A model to predict the quality of a lubricant base stock for use in a plurality of products having a plurality of viscosities. The compositional model is based on a quantitative analysis of key compositional parameters and performance criteria for the plu... | 09/25/2001 |
| 6212436 | Dynamic inheritance of software object services Object services like methods or properties are provided to or inherited by objects dynamically during run-time. In one method of providing dynamic inheritance, hierarchical relationships are defined between multiple objects such that each object reference... | 04/03/2001 |
| 6013172 | Methodology for extracting local constants from petroleum cracking flows A methodology provides for the extraction of local chemical kinetic model constants for use in a reacting flow computational fluid dynamics (CFD) computer code with chemical kinetic computations to optimize the operating conditions or design of the system... | 01/11/2000 |
| 5889683 | Method and apparatus for continuous oil monitoring and treatment Disclosed herein is a method and apparatus for controlling and extending the performance of lubricating fluids, such as lubricating oils. The method comprises simultaneous detection of multiple additives and contaminant levels in the lubricating fluids an... | 03/30/1999 |
| 5699270 | Method for preparing lubrication oils (LAW232) A method for controlling the manufacture of lubricating oils involving the steps of distillation, extracting, dewaxing and optionally hydrofining; or for controlling operating units associated with refinery or chemical processes with feed stocks and produ... | 12/16/1997 |
| 5353237 | System for increasing efficiency of chemical treatment Apparatus and method for decreasing chemical requirements for chemicals injected into a stream a low concentrations, such as for dehydration of crude oil, are provided. An algorithm is used to provide a signal to decrease chemical injection rate of a vari... | 10/04/1994 |
| 4866632 | Control means and method for solvent refining unit The control system and method of the present invention controls a solvent refining unit which treats charge oil with a solvent in a refining tower to yield raffinate and extract-mix, strippers separate the solvent from the raffinate and from the extract-m... | 09/12/1989 |
| 4713774 | Alkylation reactor quality control In an acid alkylation process wherein a fresh isobutane stream is combined with an olefin stream to form a combined isobutane olefin feed stream, a control system maintains a desired ratio of isobutane to olefin in the combined feed stream by manipulating... | 12/15/1987 |
| 4482969 | Control of an alkylation reactor An acid alkylation process is controlled so as to maintain a desired ratio of isobutane to olefins in a fluid stream flowing to the alkylation reactor and to maintain a desired acid to hydrocarbon ratio in the alkylation reactor. Also, if parallel alkylat... | 11/13/1984 |
| 4479189 | Utility and hydrogen conservation in hydrogen recycle processes There is disclosed a system for measuring and controlling the concentration of hydrogen in hydrogen-consuming hydrogen recycle processes used in oil refineries and petrochemical plants. The system is intended to reduce utilities and hydrogen usage by mean... | 10/23/1984 |
| 4357669 | Monitoring means and method for determining the wax content of oil from a solvent dewaxing unit The output oil from a solvent dewaxing unit is controlled so that it is provided as product oil when the wax content of the output oil is within a predetermined limit, or not provided as product oil when the wax content is not within the predetermined lim... | 11/02/1982 |
| 4354242 | Feedstock temperature control system A control system controls the temperature of gas oil being charged to a reactor in a hydrotreating unit. The control system includes a heater which heats the gas oil in accordance with a control signal corresponding to a desired temperature. A gravity ana... | 10/12/1982 |
| 4347577 | Feedstock temperature control system A control system controls the temperature of kerosine/diesel fuel being charged to a reactor in a hydro-treating unit. The control system includes a heater which heats the kerosine/diesel fuel in accordance with a control signal corresponding to a desired... | 08/31/1982 |
| 4243630 | Fluid catalytic cracking unit yield monitor A monitor determines the yields of constituents of a product provided by a fluid catalytic cracking unit (FCCU) receiving fresh feed and recycle feed. The monitor includes sensors providing signals corresponding to sensed operating parameters of the FCCU.... | 01/06/1981 |
| 4231459 | Control system for an N-methyl-2-pyrrolidone refining unit receiving light sweet charge oil A refining unit treats light sweet charge oil with an N-methyl-2-pyrrolidone solvent, hereafter referred to as MP, in a refining tower to yield raffinate and extract mix. The MP is recovered from the raffinate and from the extract mix and returned to the ... | 11/04/1980 |
| 4230215 | Control system for an MP refining unit receiving medium sweet charge oil An MP refining unit treats medium sweet charge oil with N-methyl-2-pyrrolidone solvent, hereafter referred to as MP, in a refining extractor to yield raffinate and extract mix. The MP is recovered from the raffinate and from the extract mix and returned t... | 10/28/1980 |
| 4228509 | Multivariable control system for regulating process conditions and process optimizing A system for regulating and optimizing process conditions, such as octane number, aniline point or density of reformed hydrocarbons, by manipulating various process variables in order to control the process, both in accordance with a regulatory effect, na... | 10/14/1980 |
| 4224674 | Control system for an N-methyl-2-pyrrolidone refining unit receiving heavy sweet charge oil A refining unit treats heavy sweet charge oil with a methyl-2-pyrrolidone solvent, hereafter referred to as MP, in a refining tower to yield raffinate and extract mix. The MP is recovered from the raffinate and from the extract mix and returned to the ref... | 09/23/1980 |
| 4224673 | Control system for an MP refining unit receiving heavy sour charge oil A refining unit treats heavy sour charge oil with N-methyl-2-pyrrolidone solvent, hereafter referred to as MP, in a refining extractor to yield raffinate and extract mix. The MP is recovered from the raffinate and from the extract mix and returned to the ... | 09/23/1980 |
| 4212070 | Control system for a furfural refining unit receiving heavy sweet charge oil A furfural refining unit treats heavy sweet charge oil with a furfural solvent in a refining tower to yield raffinate and extract mix. The furfural is recovered from the raffinate and from the extract mix and returned to the refining tower. A system contr... | 07/08/1980 |
| 4164452 | Pressure responsive fractionation control In a fractionation system in which pressure fluctuations within the fractionation vessel can result in alteration of the fractionator product composition, fractionation column pressure is monitored and converted to a temperature requirement signal represe... | 08/14/1979 |
| 4164450 | Control system for a furfural refining unit receiving light sour charge oil A furfural refining unit treats light sour charge oil with a furfural solvent in a refining tower to yield raffinate and extract mix. The furfural is recovered from the raffinate and from the extract mix and returned to the refining tower. A system contro... | 08/14/1979 |
| 4053744 | Means for controlling a solvent refining unit A solvent refining unit is controlled so that it has a maximum allowable solvent flow rate or a maximum allowable extract oil flow rate. The temperature of the extract-mix in the refining tower, the flow rate of the charge oil, the flow rate of the solven... | 10/11/1977 |
