Patent application number | Description | Published |
20100316969 | Method of Heating a Mineral Feedstock in a Firing Furnace of the Tunnel Furnace Type - Method of heating a mineral feedstock in a firing furnace of the tunnel furnace type, having a hearth with an upstream inlet, a downstream outlet and sidewalls fitted with burners, in which method the feedstock is transported as a layer of approximately constant thickness along a treatment path in which the feedstock is heated and fired by means of said burners so as to obtain a fired product, said path being located between the upstream inlet and the downstream outlet of the furnace, characterized in that said burners comprise at least one fuel injector and at least one oxidizer injector and are positioned and oriented in such a way that their flames do not impact the layer, the at least one oxidizer injector being positioned relative to the at least one fuel injector so that the at least one fuel jet injected by the at least one fuel injector is separated from the layer by at least one oxidizer jet injected by at least one oxidizer injector. | 12-16-2010 |
20110104625 | POWER SUPPLY FOR HOT OXYGEN BURNER - The present invention relates to the supplying power to burners for oxy-fuel combustion glass melting furnaces, including a fuel injecting means and a hot oxygen power supplying means, the dispensing of oxygen being carried out so as to develop a staged combustion, a fraction of the oxygen being concurrently injected into the fuel, said oxygen being supplied essentially without heating prior to the supplying thereof into the fuel injecting means. | 05-05-2011 |
20110195367 | Burner Assembly with Enhanced Flexibility - The invention relates to a burner assembly with enhanced flexibility, comprising a plurality of fuel rods that can be mounted in and removed from a fuel rod passage and that are connected to a fuel supply device by a flexible line, wherein each flexible line can be individually opened and closed. | 08-11-2011 |
Patent application number | Description | Published |
20080220993 | Stable sodium thiosulfate based fluidized polymer suspensions of hydroxyethyl cellulose for oilfield services - This invention relates to a composition and use application of aqueous fluidized polymer suspensions of hydroxyethyl cellulose (HEC) suspended in sodium thiosulfate for use in oil field applications such completion fluids, drilling fluids, fracturing fluids and oil well cement slurries as rheology/viscosity modifier and fluid loss reducer for use where the affect on the marine environment is to be minimized. | 09-11-2008 |
20080300151 | Oil-well cement fluid loss additive compostion - The present invention relates to compositions and use of fluidized polymer suspensions containing allyloxy linkage and its functional derivatives, and water soluble polymers for use in oil field applications as fluid additives for drilling and cementing processes. | 12-04-2008 |
20130299170 | CALCIUM ALUMINATE CEMENT COMPOSITION CONTAINING A SET RETARDER OF AN ORGANIC ACID AND A POLYMERIC MIXTURE - A cement composition for use in an oil or gas well, the cement composition comprises: a calcium aluminate cement; water; an organic acid; and a polymeric mixture comprising: (A) water; (B) citric acid; (C) a first polymer, wherein the first polymer: (i) comprises a cellulose backbone and carboxymethyl functional groups; and (ii) has a molecular weight of less than 100,000; and (D) a second polymer, wherein the second polymer: (i) comprises a lignosulfonate; and (ii) has a molecular weight of less than 100,000, wherein a test composition consisting essentially of: the cement; the water; the organic acid; and the polymeric mixture, and in the same proportions as in the cement composition has a thickening time of at least 5 hours at a temperature of 300° F. (148.9° C.) and a pressure of 10,000 psi (68.9 MPa). | 11-14-2013 |