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Ruhrgas Aktiengesellschaft Patents
Assignee:
Ruhrgas Aktiengesellschaft
Address:
Essen, DE
No. of patents:
36
Patents:












Patent Number Title Of Patent Date Issued
6446487 Method for measuring the quantity of heat present in fuel gas September 10, 2002
Method for measuring and/or regulating a quantity of heat contained in a fuel gas, the calorific value of the fuel gas being used as an input parameter, in which method a) the fuel gas or a part-stream of the fuel gas is guided through a volumetric meter or a mass flow meter, and the
5333591 Device to control a gas-fired appliance August 2, 1994
A device to control a gas-fired appliance as a function of the composition of a gaseous fuel. The device includes a thermal conductivity sensor emitting a measurement signal dependent upon the thermal conductivity of the gaseous fuel. An analyzing unit receives the measurement signal and
5188527 Method of and system for cleaning the surface of furnace rollers of a roller hearth furnace February 23, 1993
A roller hearth furnace (1) is subdivided into detachably assembled sections (2). In order to clean the rollers, one of the sections (2) of the assembly is removed and replaced by a replacement section (7) previously heated to the furnace operating temperature. The section (2) remove
5055032 A burner with a flame retention device October 8, 1991
The burner comprises a combustion chamber equipped with a flame retention cone. The flame retention cone comprises a diverging jacket with orifices for the passage of oxygen-carrier gas. A fuel lance provided with radially arranged exit openings has its outlet in an upstream inlet sectio
4960378 Gas burner October 2, 1990
The gas burner comprises a mixer, a conical transition member adjacent thereto on which a cylindrical burner shell with openings and whose top is closed by a burner lid is mounted. Clamped between the burner lid and the transition member is a throttling cylinder which is filled by the
4941345 Method and apparatus for the measurement of gas properties July 17, 1990
A method and apparatus for the measurement of the properties of fuel gases dependent upon flow and pressure, and more particularly upon the dyanmic viscosity and/or the density of the fuel gases. The apparatus includes a device to control the flow of the fuel gas and at least one flow
4886450 Cooled tubular assembly for industrial reheating furnace December 12, 1989
Steel charges are heated to rolling temperature in reheating furnaces. It is standard practice for the charge to be moved through such a furnace on continuous water-cooled tubular supports crossing the furnace in a straight line. The supports obstruct charge heat-up to the desired te
4859171 Method and apparatus of operating pre-mixed burners August 22, 1989
A pre-mixed burner fired at or above atmospheric pressure by a gaseous fuel or a fuel that is liquid at ambient temperature or a liquid fuel completely evaporated prior to combustion comprises a mixer wherein the fuel, combustion air and a cooling fluid are blended prior to combustion
4802142 Device for controlling the flow rate of a fuel gas/air mixture and/or the ratio between fuel gas January 31, 1989
A device for controlling the flow rate of a fuel gas/air mixture, and/or the ratio between the fuel gas and air in such a mixture. The device includes a body having an air inlet, a fuel gas inlet, a fuel gas/air mixture outlet, a gas-control passage in the body, with the cross-sectio
4749002 Shut-off device in the form of a ball valve June 7, 1988
The ball valve comprises a body (1) provided with two coaxial pipe stubs (4, 5) wherein a ball means (2) rotatable by means of a rotating shaft device floats. In the closed position, the downstream face of the spherical circumference (12) of said ball means mates with a complementary
4738577 Furnace for the heat treatment of work pieces April 19, 1988
A helical conveyor system comprising two groups of bar-shaped support elements are attached to two mounting means in the heat treatment chamber of a furnace. The mounting means and the associated support elements are mobile relative to each other both in the vertical direction and in the
4723873 Method and device for preparing an existing buried conduit for replacement by a new conduit February 9, 1988
To prepare an existing buried main made from a material which is tough at ambient temperature for replacement by a new main of the same or a larger size via a mole device by fracturing the existing main by compressive and impact forces and by widening the bore for the insertion of the ne
4699122 Storage water heater system October 13, 1987
A condensing storage water heater system comprises an inverted burner at the upper end of a water tank or cylinder connected to a vertical flueway passing through the center of the vessel. A finned heat exchanger is arranged coaxially in the flueway and the primary circuit water flowing
4689009 Skid system for carrying a furnace charge August 25, 1987
A skid system for carrying a charge in a pusher or walking-beam furnace incorporating a cooled skid pipe 3 and at least one rider 1 fitted on the skid pipe for carrying the charge in the furnace is, for permanent and effective insulation of the cooled skid pipe in the rider area designed
4659306 Method of and system for determining the ratio between the oxygen-carrying gas content and the f April 21, 1987
For determining the ratio in which two constituents are blended in a mixture comprising an oxygen-carrying gas and a gaseous fuel to be combusted by a primary combustion system, the thermodynamic conditions (composition, pressure, temperature) of the two gases prior to and after blen
4618282 Composition and a method for covering the sump in cavities October 21, 1986
Disclosed is a composition and a method for covering the sump in cavities serving to store gaseous or liquid, non-aqueous substances, using a so-called geologically old crude oil to which is added a reactive component which combines with the functional groups thereof and blocks them.
4612065 Method for the heat treatment of workpieces September 16, 1986
A method is described for the heat treatment, preferably for the intermediate heat treatment, of workpieces, in which the workpieces coming from a heating apparatus are quenched in a fluidized bed under precise temperature and movement control, and then, if necessary, transferred to a
4599092 Process for the gasification of carbonaceous agglomerates in a fixed bed reactor July 8, 1986
A process for the gasification of carbonaceous agglomerates in a reactor at a pressure of the range of 5 to 150 bar. The agglomerates are fed into said reactor from a storage zone located above the reactor and form a fixed bed in the reactor, in which they slowly descend when gasified. A
4596610 Hardening metal parts June 24, 1986
To harden individual metal parts in a continuous low-energy heat treatment process consisting of clearly separate stages, the part to be heated is placed in a sealed heat treatment box consisting of two layers of porous material separated by a gas-tight barrier. A heat-releasing atmosphe
4585631 Method for the conversion of nitrogen oxides contained in gaseous products of combustion April 29, 1986
A reducing agent such as preferably ammonia (NH.sub.3) is blended in a reaction chamber with gaseous products of combustion for the conversion of the nitrogen oxides (NO.sub.x) contained in the products of combustion into innoxious flue gas components. To accelerate the rate of reaction,
4582476 Burner April 15, 1986
A burner for the operation of premixing burners, with gaseous fuels or vaporized fuels for the production in a mixer pipe of a homogeneous mixture comprising the fuel, the quantity of combustion air required for the complete combustion of the fuel and additional cooling gas as needed
4579523 Method of operating a controlled atmosphere furnace April 1, 1986
A method of operating a controlled atmosphere furnace. To prevent the entry of oxygen into the controlled atmosphere in the chamber of the furnace, which has a furnace door for the receipt and removal of parts by means of a feeding and removal device, the device is designed to seal a ves
4569890 Process for increasing the heating value of fuel gas mixtures containing hydrogen February 11, 1986
Fuel gas mixtures of different composition containing hydrogen may be the main products or by-products of chemical conversion processes such as, without limitation, processes for the conversion of solid or liquid fuels. Such gas mixtures are, however, normally not fit for public gas supp
4557220 Gas apparatus for producing hot water December 10, 1985
There is described here a gas water heater consisting of a blower (1), a premixing device (2), a gas burner (3), a heat exchanger (4), and a waste gas heat exchanger (5). Gas burner (3) works as super-stoichiometrically premixing burner and has a burner plate (9) which is cooled on the r
4545208 Method of operating an industrial furnace October 8, 1985
The disclosure relates to a method of operating an industrial furnace which is heated by recuperator burners from which the exhaust gases are extracted via steam jet injectors. The exhaust gas-steam mixture from the steam jet injectors passes into a waste heat boiler in order to produce
4541407 Cooking station for gas ranges September 17, 1985
A cooking station for gas ranges whose burner works with super-stoichiometric combustion air premixing. The burner head arranged in a burner tray is connected with a mixing pipe via a ceramic insulating ring. Between the burner head bottom and the burner head lid with the flat topsid
4530656 Burner July 23, 1985
A burner for the operation of premixing burners, with gaseous fuels or vaporized fuels for the production in a mixer pipe of a homogeneous mixture comprising the fuel, the quantity of combustion air required for the complete combustion of the fuel and additional cooling gas as needed
4508501 Method of monitoring furnace installations April 2, 1985
A process for the surveillance of jacketed radiant heating tubes and recuperative burners using a detector responding to the oxygen partial pressure in the exhaust gas. At low exhaust gas temperatures down to 200.degree. to 300.degree. C., an abrupt change in the detector output sign
4501127 Heating system incorporating an absorption-type heat pump and methods for the operation thereof February 26, 1985
The invention concerns a heating system incorporating an absorption-type heat pump where the generator is heated by an aerated gas burner combusting a fuel-lean mixture whose efficiency is very high both at full and at part load and whose flue gas has a very low nitrogen monoxide and
4457704 Method for the operation of a gas burner exposed to an air current as well as burners to impleme July 3, 1984
The method and apparatus sucks the entire combustion air volume in laterally with respect to the direction of flow of the air current with the help of the impulse of a fuel gas jet out of the air current into a mixing pipe and the formation of a differential pressure between the mixi
4439135 Process for the operation of premixture burners and burner for carrying out the process March 27, 1984
A process for the operation of premixing burners, and a burner for carrying out the process, with gaseous fuels or vaporized fuels for the production in a mixer pipe of a homogeneous mixture comprising the fuel, the quantity of combustion air required for the complete combustion of the f
4403887 Method of covering the sump of underground cavities September 13, 1983
A method of covering the sump of underground cavities which serve to store gaseous or liquid non-aqueous substances. The sump is covered with a layer of highly viscous crude oil which is at least 1 cm, and preferably 20 to 50 cm, thick. The crude oil contains not more than 7% hydrocarbon
4384792 Process and apparatus for the combustionless measurement and/or control of the amount of heat fe May 24, 1983
A process and apparatus for the combustion-less measurement and/or regulation of the feeding of quantities of heat to gas combustion devices, particularly natural-gas combustion devices. A fuel gas or a partial stream of the fuel gas is fed through a fuel gas line containing at least
4082520 Process of producing gases having a high calorific value April 4, 1978
In the production of a gas having a high calorific value and containing more than about 50% methane by volume by a process comprising gasifying a solid fuel under a pressure of about 5 - 150 bars by a treatment with oxygen and water vapor to produce a water vapor-containing raw gas at a
4056483 Process for producing synthesis gases November 1, 1977
In the production of a synthesis gas comprising carbon monoxide and hydrogen, by a process comprising gasifying a solid fuel under a pressure of about 5-150 bars by a treatment with oxygen and water vapor to produce a water vapor-containing raw gas at a temperature of about 350.degre
4038045 Process for degasifying fine-grained fuels July 26, 1977
Fine-grained fuels such as coal are continuously degasified by a process wherein a fine-grained degasified residue is recirculated as a heat-carrying medium and is heated in a pneumatic conveyor line and then fed to a collecting vessel. A first partial stream of the heat-carrying med

 
 
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