Matches 1 - 50 out of 65 1 2 >
Match Document Document Title
7595035 Process for the recovery of sulfuric acid  
Process for the recovery of sulfuric acid comprising: (a) contacting a stream containing sulfuric acid vapor and/or sulfur trioxide in an absorption stage with a ionic liquid absorbent, (b)...
7507391 Process and apparatus for the production of sulphur oxides  
Sulphur oxides are generated from a liquid stream of hydrogen sulphide by feeding the liquid stream to a vacuum stripper where the stream is contacted with a stripping gas including steam under...
7497998 Gas converter  
A converter having an exterior shell with a central axis, at least one gas inlet and at least one gas outlet. The exterior shell includes a base and an interior support structure. A number of...
7455819 Apparatus for simultaneous dry desulfurization/denitrification  
It is an high efficiency and low cost apparatus for simultaneous dry desulfurization and denitration ( 10 ), capable of simultaneous oxidation of nitrogen monoxide and sulfur dioxide by chain...
7419647 Hydrothermally stable Ag-zeolite traps for small olefin hydrocarbon molecules  
A hydrocarbon trap comprises an Ag-zeolite which is heated by a unique steaming regimen.
7306774 Reactive membrane process for the removal of vapor phase contaminants  
Generally, the present invention provides a method and apparatus for removing a vapor phase contaminant from a gas stream, thereby reducing the concentration of the vapor phase contaminant in the...
6740302 Method for producing high-purity sulphuric acid  
The invention relates to a novel method for producing high-purity sulfuric acid for use in the semiconductor industry. The method comprises the addition of a hydrogen peroxide solution to an...
6572835 Method and apparatus for producing gaseous sulfur trioxide  
An apparatus and method for producing sulfur comprises a vessel containing a plurality of spaced-apart channels each having an upstream end communicating with an upstream manifold and a downstream...
6500402 Catalyst for oxidizing SO2 to SO3 and utilization of the catalyst in a method for producing sulfuric acid  
A catalyst for reacting SO 2 with molecular oxygen to form SO 3 is suited for a continuous operation at temperatures of 700° C. and above, when the same consists of a carrier and an active...
6287534 Method for manufacturing sulfuric acid  
A method for accelerating the rate of chemical reactions is disclosed consisting of subjecting a gas stream from a flue stream, industrial source, or utility boiler to a high time rate of change of...
6045770 Sulfur dioxide generation using granulated or emulsoid sulfur feedstock  
A flue gas conditioning system (FGC) for conditioning the flue gas flowing in a flue from a boiler to an electrostatic precipitator by injecting sulfur trioxide into the flue gas upstream of the...
5935538 Apparatus and method for photocatalytic conditioning of flue gas fly-ash particles  
A process is provided for conditioning fly-ash present in flue gas which also contains sulfur dioxide and steam by subjecting the fly-ash containing flue gas to ultraviolet radiation so as to...
5824277 Plasma oxidation of an exhaust gas stream from chlorinating titanium-containing material  
A process is disclosed for treating an exhaust gas stream containing COS and CO arising from chlorinating titanium-containing material with a cold plasma wherein oxygen is present and selectively...
5791268 SO3 flue gas conditioning system with catalytic converter temperature control by injection of water  
An improved method and system for cooling the sulfur dioxide gas stream flowing from a sulfur furnace to a catalytic converter in a sulfur trioxide flue gas conditioning system. Water is injected...
5785938 Process using recyclable sorbents for the removal of sox from flue gases and other gas streams  
A process for removing and then capturing noxious sulfur oxides from gas streams, particularly from the flue gases of coal-burning power plants, using Ni-containing heated layered double hydroxide...
5780383 Solid superacid catalyst comprising group VII metal and having H.sub.o less than -18  
The invention is a solid catalyst having acid strength H o less than -18. Such catalysts are characterized by the ability to react with very weak bases, such as butane, at relatively low...
5503821 Methods for recovering high grade process energy from a contact sulfuric acid process  
An improved process for the recovery of high grade energy from a contact sulfuric acid manufacturing process. Improvements include: injection of steam between an intermediate catalyst stage and a...
5480620 Catalytic converter  
A catalytic converter for converting sulfur dioxide to sulfur trioxide comprising an exterior shell of a heat resistant weldable metal; foundations from which the shell vertically extends; an...
5308456 Molten carbonate fuel cell sulfur scrubber and method using same  
Sulfur compounds poison catalysts, such as the anode catalysts and reformer catalysts within molten carbonate fuel cell systems. This poisoning is eliminated using a sulfur scrubber 29 located...
5306477 Use of wrought and cast materials and welding fillers for making and using hot concentrated sulphuric acid or oleum  
In a process such as the preparation of sulphuric acid wherein a wrought or cast material or a welding filler is contacted with hot concentrated sulphuric acid or oleum of up to 10 wt-%, the...
5194239 Oxygen-based noncatalytic sulfuric acid process  
A noncatalytic process for producing sulfur trioxide and sulfuric acid in which sulfur is combusted with an oxygen-rich gas in the presence of recycled sulfur dioxide-rich gas to form sulfur...
5118490 Absorption of wet conversion gas  
An improved process for manufacture of sulfuric acid by catalytic oxidation of wet sulfur dioxide gas. Wet conversion gas is contacted with sulfuric acid in a heat recovery stage to effect...
5022332 Combustion method for improved endothermic dissociation  
A method for endothermically dissociating contaminated acid wherein high velocity oxidant causes a recirculation flow within a combustion zone and combusts with fuel to release heat and wherein the...
4996038 Heat recovery from concentrated sulfuric acid  
A method and apparatus for the recovery of heat from a sulfuric acid process are provided. Sulfur trioxide is absorbed into hot concentrated sulfuric acid, acid having a concentration greater than...
4971781 Working up sodium sulfate-containing residues  
Sodium sulfate-containing residues are worked up by reducing the sulfate by a process in which the sulfate or a mixture or solution of the sulfate is thermally cleaved by adding oxygen, air or...
4915912 Apparatus for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins  
The present invention provides an apparatus for generating a reagent of sulfur trioxide in a carrier which includes a reagent generator. The reagent generator has associated therewith means for...
4902493 Process for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins  
The present invention provides a process for generating a reagent of sulfur trioxide in a carrier. A source of sulfur trioxide, a carrier, and oleum are introduced into a reagent generator. The...
4673560 Generation of sulphur trioxide from oleum using microwave energy  
Process and apparatus for the generation of sulphur trioxide from oleum using microwave energy for use in the sulphonation and nitration of organic compounds and the fortification of oleum. The...
4663142 Generation of sulphur trioxide from oleum  
A continuous process for the generation of sulphur trioxide from oleum suitable for use in the sulphonation of organic compounds which comprises continuously introducing oleum feed to a sulphur...
4543244 Use of high silicon Cr Ni steel in H.sub.2 SO.sub.4 manufacture  
Apparatus and process for the manufacture of sulphuric acid by the contact process of the type comprising at least one gas-concentrated sulphuric acid contacting unit and a sulphuric acid heat...
4496441 Desulfurization of coal  
A system for desulfurization of sulfur-containing coal comprises apparatus for comminuting sulfur-containing coal, a gas/solid reactor having an inlet and an outlet, a connection or conduit for...
4191732 Method of removing sulfur dioxide from gases  
Sulfur dioxide is removed from a sulfur dioxide-containing gas mixture by contacting the gas mixture with a monoolefin or diolefin.
4139596 Producing sulphuric acid  
This invention is based on the factors that both oxygen gas and oxides of sulphur as well as hydrogen sulphide are highly soluble in saturated, halogenated hydrocarbon liquids which are also...
4102951 Calcination of basic ferric sulphates  
A two-step process for the calcination of basic ferric sulphates in which the basic ferric sulphate is dehydrated by heating in a relatively low temperature range and the dehydrated product is then...
4091864 Process for the conversion, conveyance and utilization of energy  
An energy conversion, conveyance and utilisation system, particularly for providing process heat in industrial plants, which makes use of a source of heat such as a nuclear reactor to dissociate...
3983218 Method for dry removal of sulfur dioxide from furnace flue, coal and other gases  
A process using run-of-the-mill flue dust from open hearth and basic oxygen steel making processes having certain iron-zinc values as a sulfur dioxide absorbent and pollutant control for industrial...
3976757 Method for increasing the productivity of chemical reactors  
1. In the vapor phase reaction of F 2 with a member selected from the group consisting of ClF 3 , Cl 2 , BrF 3 , BR 2 and SF 4 , at elevated pressures and temperatures in a chemical reactor,...
3970745 Method for producing hydrogen from water  
A method for producing hydrogen from water in which hydrogen is produced by reducing water using metallic germanium and the by-product, germanium monoxide, is reduced with a reducing agent to...
3929964 Process for the conversion of sodium sulfite  
The sodium sulfite obtained as a byproduct in the production of hydroxy aromatic compounds from aromatic hydrocarbons, sulfur trioxide and sodium hydroxide, is converted into sulfur trioxide and...
3890103 Anti-pollution exhaust apparatus  
Apparatus for eliminating harmful or poisonous contaminants from exhausting gas is provided by making the exhausting gas enter into an exhausting chimney near a bottom thereof, the chimney having a...
3873674 Conversion of sulfur dioxide to sulfur trioxide by peroxytitanium complexes  
A supported peroxytitanium complex as an oxidizing agent in the form of a fixed bed is employed to convert sulfur dioxide containing gaseous streams, such as stack gases, to sulfur trioxide which...
3856927 ACCELERATION OF OXIDATION PROCESSES OVER VANADIA CATALYSTS  
A gaseous mixture comprising an oxidizable substance and oxygen is passed over a vanadia catalyst while one or more of these reaction conditions is cycled: A. ratio of oxidizable substance to...
3855386 CATALYTIC FUSED SALT EXTRACTION PROCESS FOR REMOVAL OF SULFUR OXIDES FROM FLUE OR OTHER GASES  
A continuous catalytic fused salt extraction process is described for removing sulfur oxides from gaseous streams. The gaseous stream is contacted with a molten liquid potassium sulfate salt...
3780499 SYSTEM FOR THE LIQUID-PHASE REMOVAL OF A COMPONENT FROM THE GAS STREAM ESPECIALLY THE ABSORPTION OF SULFUR TRIOXIDE IN SULFURIC ACID  
A process for the removal of gaseous components from a gas stream by liquid-phase absorption of the component in the treatment of the gas with a liquid, especially the absorption of sulfur trioxide...
3620673 METHOD OF PRODUCING SULFURIC ACID  
Hot combustion gases bearing sulfur dioxide produced by burning sulfur in air are cooled in a waste heat boiler and a heat exchanger before introduction into a multipass catalytic converter. The...
3523407 METHOD FOR ELECTROSTATIC PRECIPITATION OF DUST PARTICLES  
3375069 Process for removing zinc oxide from iron oxide flue dust by the use of spent pickle liquor  
3363398 Sulphur trioxide  
3296096 Recovery of sulfur trioxide by distillation while controlling a process variable in response to the dielectric constant  
3284158 Method of and apparatus for removing sulfur compounds from gases  
Matches 1 - 50 out of 65 1 2 >