Matches 1 - 35 out of 35


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US20080044342 Fail-safe, on-demand sulfurous acid generator  
A generator to provide sulfurous acid on demand and fail-safe operation includes a hopper to provide a supply of sulfur, and a burner connected to the hopper to receive the sulfur and combust it...
US20120087856 GENERATION OF SULFUR TRIOXIDE AND SULFURIC ACID  
Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas...
US20130157845 SORBENTS FOR REMOVING MERCURY FROM EMISSIONS PRODUCED DURING FUEL COMBUSION  
Activated carbon is rendered more thermally stable by exposure to a non-halogenated additive, and optionally to a halogen and/or a halogen-containing compound. Such treated carbon is suitable for...
US20140079624 ENERGY RECOVERY IN MANUFACTURE OF SULFURIC ACID  
This invention relates to the recovery of energy in the manufacture of sulfuric acid, and more particularly to enhanced recovery of energy from the absorption of wet SO3 in sulfuric acid. The...
US20130115159 ENERGY RECOVERY IN MANUFACTURE OF SULFURIC ACID  
This invention relates to the recovery of energy in the manufacture of sulfuric acid, and more particularly to enhanced recovery of energy from the absorption of wet SO3 in sulfuric acid. The...
US20080044341 Sulfurous acid mist and sulfur dioxide gas recovery system  
A system is disclosed for retrieving a mist of sulfurous acid and creating sulfurous acid from residual sulfur dioxide gas originating from an exhaust of a sulfurous acid generator. In one...
US20140056802 PROCESS FOR PRODUCING SULFURIC ACID WITH LOW LEVELS OF NITROGEN OXIDES  
A process for producing sulfuric acid with reduced levels of nitrogen oxides (NOx) within a typical sulfuric acid production line. A hydrazine source material can be mixed with a sulfuric acid...
US20130336876 Low Temperature Sulphur Dioxide Oxidation Catalyst for Sulfuric Acid Manufacture  
Improved catalysts for oxidation of sulfur dioxide which are alkali metal-promoted vanadium catalysts which are further promoted by gold. Improved methods employing such catalyst for oxidation of...
US20130236389 METHOD FOR INCREASING THE SULFURIC ACID CONCENTRATION OF A SULFURIC ACID SOLUTION  
Described is a method of increasing the sulfuric acid concentration of a first aqueous sulfuric acid solution with a sulfuric acid concentration of 82-89% to a concentrated sulfuric acid solution...
US20120295812 METHOD FOR EXTRACTING STAPHYLOCOCCUS AUREUS ANTIGEN, REAGENT FOR EXTRACTING STAPHYLOCOCCUS AUREUS ANTIGEN, AND METHOD FOR ASSESSING STAPHYLOCCOCCUS AUREUS  
The invention provides a method for extracting a Staphylococcus aureus antigen which comprises using an extraction reagent with a pH of no higher than 5.0, containing one or more acids selected...
US20110104034 Hydride compounds  
This invention is directed to compositions of matter comprising a hydride ion having a binding energy greater than about 0.8 eV. The claimed hydride ions may be combined with cations, including a...
US20100284899 GENERATION OF SULFUR TRIOXIDE AND SULFURIC ACID  
Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas...
US20120308473 METHOD AND APPARATUS FOR ADJUSTING THE CONCENTRATION OF ACIDS OR LYES  
A method for adjusting a concentration of an acid or lye includes charging a medium for adjusting the concentration of the acid or lye into a supply conduit of the acid or lye so as to provide a...
US20100068127 PROCESS FOR THE PRODUCTION OF SULPHURIC ACID  
Process for the production of concentrated sulphuric acid and oleum from feed gases with up to 70% SO2+SO3 (SOx) and a content of H2O corresponding to H2O/SO3 molar ratios up to 1.6, particularly...
US20120067173 PROCESS FOR LIBERATING METALS USING DIRECT PRODUCTION OF LEACH GRADE ACID SOLUTIONS  
A system which uses available waste acid process streams from hydrometallurgical extraction processes as absorption media for the direct production of leach grade acid solutions for return to the...
US20140322125 RECOVERY OF SULFUR TRIOXIDE HEAT OF ABSORPTION  
A contact process for manufacture of sulfuric acid is disclosed in which the vapor phase heat of formation of sulfuric acid in the sulfur trioxide conversion gas and the heat of absorption of SO3...
US20080226540 Ruthenium Oxide Catalysts for Conversion of Sulfur Dioxide to Sulfur Trioxide  
The present invention relates generally to catalysts comprising ruthenium oxide and to processes for catalyzing the oxidation and conversion of sulfur dioxide (SO2) to sulfur trioxide (SO3) using...
US20090178512 PROCESS FOR LIBERATING METALS USING DIRECT PRODUCTION OF LEACH GRADE ACID SOLUTIONS  
A system which uses available waste acid process streams from hydrometallurgical extraction processes as absorption media for the direct production of leach grade acid solutions for return to the...
US20100061922 METHOD FOR PRODUCING HYDROGEN AND SULPHURIC ACID  
The invention relates to a method for producing gaseous hydrogen and strong sulphuric acid (97-100 wt-%) simultaneously from sulphur dioxide gas and water. Sulphur dioxide gas stream is divided...
US20110311433 PROCESS AND SYSTEM FOR PRODUCTION OF CONCENTRATED SULPHURIC ACID FROM OFF-GAS  
A process and system for production of concentrated sulphuric acid from sulphuric acid by stripping the sulphuric acid with dried air. The concentration of the sulphuric acid is 90-98% by weight,...
US20100189623 METHOD FOR THE RECOVERY OF MINERAL ACIDS FROM SALINE SOLUTIONS  
The invention relates to a process for recovering acids from product streams of organic syntheses, which comprises the steps a) neutralization of the acid with a base,b) removal of the base by...
US20060002845 Sulfuric acid process  
A method of operating the standard Westinghouse Sulfur Process (2) or the standard Iodine Sulfur Process (4) both having the common initial reaction of H2SO4⇄SO2+H2O+O.5O2, where over 760° C. of...
US20100254889 METHOD FOR PRODUCING SULFURIC ACID  
A process for preparing sulfuric acid, in which process gases comprising sulfur dioxide are obtained by combustion of liquid sulfur by means of process air introduced from the outside or by...
US20140205534 METHOD FOR PREPARING SULFURIC ACID BY USING HYDROGEN SULFIDE  
Provided is a method for preparing sulfuric acid by using hydrogen sulfide. The method comprises the following steps: (1) performing a reduction-oxidation reaction between an H2S feed gas and...
US20120171110 METHOD AND SYSTEM FOR THE PRODUCTION OF SULFURIC ACID  
The invention relates to a method and an installation for producing sulfuric acid. First of all, a product gas flow (5) containing sulfur dioxide is produced. The product gas flow (5) is supplied...
US20150147266 PROCESS FOR THE OXIDATION OF SO2 TO SO3  
The present invention relates to a process plant for the oxidation of SO2 to SO3 in a process gas, said process plant comprising a heat exchanger configured for heating the process gas by heat...
US20130071314 PROCESS FOR PRODUCING HYDROGEN, SULFUR AND SULFUR DIOXIDE FROM HYDROGEN SULFIDE-CONTAINING GAS STREAMS  
A process for making molecular hydrogen, elemental sulfur and sulfur dioxide from hydrogen sulfide. The process involves contacting a gas stream of hydrogen sulfide within a contacting zone with a...
US20140219910 SULPHURIC ACID PRODUCTION WITH RECYCLE OF DESULPHURIZED GAS  
The invention relates to a process for oxidation of SO2 to SO3 comprising the steps of (a) directing a stream of feed gas comprising SO2 and O2 to a catalytically active material, (b) oxidizing an...
US20120252999 PRODUCTION OF CHEMICAL COMPOUNDS  
Systems and methods of producing chemical compounds are disclosed. An example chemical production system includes a combustion chamber having intake ports for entry of a gas mixture. An igniter...
US20140048228 PROCESS FOR PRODUCTION OF SULPHURIC ACID  
The invention relates to a condenser, having a process gas side and a heat transfer medium side said condenser being configured for feeding a hot process gas containing a condensable component to...
US20130058854 PROCESS AND APPARATUS FOR SULPHURIC ACID PRODUCTION  
A process for the conversion of sulphur dioxide contained in a feed gas to sulphur trioxide, comprising the steps of a) alternatingly providing a first feed gas containing a high concentration of...
US20170182457 PROCESS AND PLANT FOR THE PRODUCTION OF LIQUID ACID  
A process for the production of liquid acid, comprising the steps of: feeding liquid acid with a first concentration into a gas purification; passing a gas through the gas purification such that a...
US20170107108 SINGLE CONTACT, SINGLE ABSORPTION SYSTEM FOR PRODUCING SULFURIC ACID WITH HIGH CONVERSION EFFICIENCY  
Commercial production of sulfuric acid is almost entirely accomplished nowadays using the contact process. And the trend is to increase conversion efficiency and reduce emissions of unconverted...
US20160045841 NEW AND IMPROVED SYSTEM FOR PROCESSING VARIOUS CHEMICALS AND MATERIALS  
Eco-friendly systems, methods and processes/processing (EFSMP) or an integrated Matrix encompasses stand-alone and/or interconnected modules for completely self-sustained, closed-loop,...
US20150315022 CONTACT APPARATUS FOR OXIDIZING SULFUR DIOXIDE AND SYSTEMS FOR PRODUCING SULFURIC ACID  
A method is disclosed for oxidizing sulfur dioxide using the contact process in which a gas stream comprising the sulfur dioxide and oxygen itself is used as the cooling medium in a contact...

Matches 1 - 35 out of 35