Patents by Inventor Volkmar Schmidt
Volkmar Schmidt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20090008268Abstract: A description is given of a process for the production of a disinfectant by electrochemical activation (ECA) of water, in that to the water to be disinfected is added an electrolytic solution, particularly a sodium or potassium chloride solution and the water to which the electrolytic solution has been added in the form of a dilute water/electrolytic solution is supplied with an electrical current in an electrolytic reactor with a cathode compartment having a cathode and with an anode compartment having an anode separated spatially from the cathode compartment by applying a d.c. voltage to the electrodes, in order to bring the water/electrolytic solution into a metastable state suitable for disinfection. To bring about a reliable disinfecting action of the electrochemically activated water and with high reproducibility, the invention proposes that the pH-value of the dilute water/electrolytic solution in the reactor anode compartment is controlled to a value between 2.5 and 3.Type: ApplicationFiled: February 14, 2007Publication date: January 8, 2009Inventors: Peter Salathe, Christian Fischer, Bernd Jost, Steven Gross, Volkmar Schmidt
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Patent number: 5457250Abstract: Plastic wastes are thermally cracked to give primarily liquid products which are transformed into synthesis gas by partial oxidation.Type: GrantFiled: August 16, 1994Date of Patent: October 10, 1995Assignee: Hoechst AktiengesellschaftInventors: Ulrich Gerhardus, Horst Hanke, Josef Hibbel, Norbert Leder, Klaus Poloszyk, Heinz Scheve, Volkmar Schmidt
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Patent number: 4752303Abstract: The present invention describes a process for producing synthesis gas by partial oxidation of carbon-containing particles suspended in water with oxygen at elevated pressures and temperatures of 1000.degree. to 1600.degree. C. Three substance streams are added separately but simultaneously to the reactor. The inner substance stream consists of oxygen or a mixture of oxygen and synthesis gas. The middle substance stream forms a carbon-water suspension, and the outer substance stream carries oxygen or oxygen-containing gases. Due to the fact that these three substance streams intersect at an acute angle, an ideal distribution of the suspension with the gas streams is achieved and an optimum reaction course is ensured. In order to be able to compensate requirement fluctuations during continuous operation, the outlet opening for the carbon-water suspension and the outer gas stream can be correspondingly adapted in a continuous and independent manner.Type: GrantFiled: May 12, 1987Date of Patent: June 21, 1988Assignee: Ruhrchemie AktiengesellschaftInventors: Winfried Materne, Bernard Schleper, Josef Hibbel, Volkmar Schmidt, Bernhard Lieder, Ulrich Gerhardus, Heinrich Scheve
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Patent number: 4699773Abstract: A process for the preparation of ammonium nitrate by the reaction of nitric acid with ammonia in two stages at elevated temperature, in which the first stage is carried out at elevated pressure and the second stage is carried out at atmospheric pressure. The heat of neutralization released in the first stage is used to vaporize a portion of the reactor contents, the remaining heat of reaction being utilized to produce steam. The vapor leaving the first stage develops a pressure which controls the valve regulating the amount of heat recovered by steam generation. The valve is opened when the pressure of the vapor exceeds a set value, usually in the range of 3.4 to 4.8 bars. Decomposition products of ammonium nitrate are also measured and override the pressure regulated control of the proporiton of heat recovered by steam generation, so as to maintain ammonium nitrate decomposition within acceptable limits. An apparatus for carrying out the process is also disclosed.Type: GrantFiled: December 28, 1984Date of Patent: October 13, 1987Assignee: Ruhrchemie AktiengesellschaftInventors: Klaus Ulrichs, Joseph Hibbel, Volkmar Schmidt, Bernhard Lieder, Heinrich Scheve, Burchard Schulze-Frenking, Wolfgang Hofs, Jurgen Nottebohm
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Patent number: 4547142Abstract: An improved ram extruder for the production of plastic pipe, especially plastic pipe of high molecular weight low pressure polyethylene, which comprises an extrusion die, heating means for heating polymer to be extruded, a ram which is reciprocated in the extrusion die, means for reciprocating said extrusion die and a mandrel which determines the inside diameter of plastic pipe to be extruded, the mandrel being rigidly connected with the ram. Also disclosed is a process for ram extruding plastic pipe by the use of such a ram extruder, especially a process for the formation of plastic pipe of high molecular weight low pressure polyethylene of molecular weight of more than 500,000. A pipe or tube of high molecular weight low pressure polyethylene of molecular weight more than 500,000 is also disclosed together with its use as a liner for a steel pipe.Type: GrantFiled: December 31, 1981Date of Patent: October 15, 1985Assignee: Ruhrchemie AktiengesellschaftInventors: Clemens Arenhovel, Joachim Much, Ali-Maher Onallah, Volkmar Schmidt
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Patent number: 4541840Abstract: The invention relates to a process and a device for the discharge of residues of ash-containing fuels occurring during gasification of coal. The hot mixture of residues and water is separated in a separating chamber, whereby the residues enter a lock vessel situated under the separating chamber. The hot water is recycled to the water bath situated under the gasification reactor. After the lock vessel has been filled with residue, the hot water in the separating chamber is cooled or replaced by cold water. The discharge of the residues is pressureless and is effected by a stream of water flowing through the separating chamber into the lock vessel. Separating chamber and lock vessel remain filled with water at all times.Type: GrantFiled: August 8, 1983Date of Patent: September 17, 1985Assignee: Ruhrchemie AktiengesellschaftInventors: Josef Hibbel, Ulrich Gerhardus, Volkmar Schmidt, Bernhard Lieder, Heinrich Scheve, Erwin Zerres
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Patent number: 4526588Abstract: A coal-water suspension containing 50 to 75 percent by weight coal, based on the weight of the suspension, the bulk of the coal having a particle size of 50 to 500 .mu.m, the proportion of the particles having a diameter greater than 0.5 mm in the coal being less than 15 percent by weight and the particle size distribution curve of the coal in the Rosin-Rammler particle size distribution grid according to DIN 4190 having a slope of .gtoreq.1; a process for the production of such water-coal suspension which is suitable for use in coal gasification under elevated pressure by mixing lump coal with water directly, the water being added in a concentration just sufficient to form a water-coal dust suspension suitable for the gasification reaction and grinding the resultant suspension in a disc attrition mill, a toothed disc attrition mill or a toothed colloid mill.Type: GrantFiled: May 6, 1983Date of Patent: July 2, 1985Assignee: Ruhrchemie AktiengesellschaftInventors: Jurgen Lusch, Heinrich Heinen, Bernhard Lieder, Volkmar Schmidt, Wolfgang Kolodzey
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Patent number: 4523036Abstract: The continuous preparation of aldehydes from olefins and synthesis gas by the use of a water-soluble catalyst system containing rhodium. The reaction takes place at 100 to 30,000 kPa and 90.degree. to 150.degree. C. The proportion of gaseous components in the liquids is 5 to 30% by volume, based on the total gaseous and liquid components, the volume ratio of aqueous to organic parts being 1:1 to 100:1. After completion of the reaction, the liquid components and the gaseous components are separated into a liquid phase and a gaseous phase, then the liquid phase is divided into aqueous and organic parts, separation taking place without previous cooling. The heat contained in the reaction product is either removed by water or steam, or is carried over to the hydroformylation products.Type: GrantFiled: September 16, 1983Date of Patent: June 11, 1985Assignee: Ruhrchemie AktiengesellschaftInventors: Boy Cornils, Josef Hibbel, Bernhard Lieder, Joachim Much, Volkmar Schmidt, Ernst Wiebus, Werner Konkol
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Patent number: 4502230Abstract: The invention relates to an apparatus for drying finely particulate solids in a carrier gas stream conducted along a helical path. The apparatus consists of an externally heated and cooled flow tube centrically surrounding a similarly heated and cooled inner body. Guide means helically arranged in succession in the flow direction are situated between the flow tube and inner body, and are formed as aerofoil-like curved or flat plates and are distributed over the whole length of the inner body. These guide means are designed as a self-supporting structure not secured to the inner body.Type: GrantFiled: September 30, 1982Date of Patent: March 5, 1985Assignee: Ruhrchemie AktiengesellschaftInventors: Johann Commer, Wulf-Dieter Neuhaus, Volkmar Schmidt
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Patent number: 4425139Abstract: An improvement in a process for periodically sluicing residues which are produced when gasifying ash-containing fuels with oxygen or an oxygen-containing composition under a pressure of 10 to 200 bars wherein ash is granulated in a water bath connected to a gasification chamber, suspended in water and passed into a non-pressurized collecting vessel provided with a conveyor is described. The improvement comprises:a. discharging the residue from said water bath which is maintained in fluid communication with said gasification chamber via a lock vessel, said lock vessel being connected to a surge tank which contains water so that the lock vessel remains constantly filled with water;b. equalizing the pressure between said lock vessel and said gasification chamber including said water bath by opening a connection to a process water feed line for said water bath and admitting water therein;c.Type: GrantFiled: July 2, 1981Date of Patent: January 10, 1984Assignee: Ruhrchemie AktiengesellschaftInventors: Volkmar Schmidt, Bernhard Lieder, Heinrich Scheve, Hans Dohren
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Patent number: 4402860Abstract: An improved process for de-cobaltizing the primary product of an oxo synthesis is disclosed wherein the primary product is contacted with steam introduced into a vessel to which the primary oxo product is introduced but initially maintained in out of contact relationship to such product by a cooling medium whereby heat transfer from the steam to the primary product is initially avoided. The primary product and steam are fed to a cylindrical reactor having a conical base, and after the steam has risen 1/2 to 2/3 of the height of the conical base it comes in contact with the primary product whose liquid level height in the vessel is maintained at one to two times the vessel's diameter. An apparatus for performing such process is also disclosed.Type: GrantFiled: August 25, 1981Date of Patent: September 6, 1983Assignee: Ruhrchemie AktiengesellschaftInventors: Josef Meis, Volkmar Schmidt, Hans Tummes, Joachim Much
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Patent number: 4381924Abstract: An improvement in a process for periodically sluicing residues which are produced when gasifying ash-containing fuels with oxygen or an oxygen-containing composition under a pressure of 10 to 200 bars wherein ash is granulated in a water bath connected to a gasification chamber, suspended in water and passed into a non-pressurized collecting vessel provided with a conveyor is described. The improvement comprises:a. discharging the residue from said water bath which is maintained in fluid communication with said gasification chamber via a lock vessel, said lock vessel being connected to a surge tank which contains water so that the lock vessel remains constantly filled with water;b. equalizing the pressure between said lock vessel and said gasification chamber including said water bath by opening a connection to a process water feed line for said water bath and admitting water therein;c.Type: GrantFiled: March 20, 1981Date of Patent: May 3, 1983Assignee: Ruhrchemie AktiengesellschaftInventors: Volkmar Schmidt, Bernhard Lieder, Heinrich Scheve, Hans Dohren
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Patent number: 4310333Abstract: An improvement in the process for the gasification of a solid fuel wherein the solid fuel is at least partially oxidized at a temperature above the melting point of ash of the solid fuel and at a pressure of 10-200 bar where the resultant synthesis gas is thereafter cooled in the presence of combustion residues of the solid fuel, and the combustion residues are thereafter discharged directly, the improvement residing in carrying out the gasification in a gasification zone disposed vertically over and in fluid communication with a radiation zone comprising cooling surfaces, the radiation zone have disposed at the bottom thereof and in fluid communication with the radiation zone a water containing bath. The radiation zone is cylindrical or conical, widens by 0 to 15 degrees towards the bottom, is made in a finned wall construction with a relation of height to diameter of .ltoreq.6:1 and comprises cooling surfaces.Type: GrantFiled: March 17, 1980Date of Patent: January 12, 1982Assignee: Ruhrchemie AktiengesellschaftInventors: Volkmar Schmidt, Bernhard Lieder, Heinrich Scheve, Hans Dohren