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7635408 |
Methods and configurations for acid gas enrichment
Hydrogen sulfide is selectively enriched from an acid gas ( 1 ) that comprises relatively large quantities of carbon dioxide using a configuration in which a portion of an isolated hydrogen sulfide...
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7399337 |
Continuous air monitor filter changeout apparatus
An apparatus and corresponding method for automatically changing out a filter cartridge in a continuous air monitor. The apparatus includes: a first container sized to hold filter cartridge...
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7374604 |
System and method for flue gas treatment
The present invention discloses a system for flue gas treatment, wherein the provided system comprises a quench module, a first control module, a filter collecting module, a wet scribing module and...
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7252703 |
Direct contact liquid air contaminant control system
The direct contact liquid air contaminant control system and method to revitalize air by removal of carbon dioxide and other trace gas contaminants use a direct contact air, liquid scrubber element...
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7189282 |
Method for eliminating mercaptan from crude gas
This invention relates to a process for cleaning gas, in particular hydrocarbonaceous gas such as e.g. natural gas, which is contaminated with sulfur in the form of H 2 S and mercaptans as well as...
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7160362 |
Method and device for cleaning air
A method of cleaning air, including a humidifying operation for humidifying the air containing chemical contaminants by a humidifier and taking a part of the gaseous contaminants in the air into...
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7156895 |
Air cleaning system
A system for cleaning air wherein the air to be cleaned is bubbled up through an aqueous phase and an organic phase. The air is bubbled upwardly through the liquid to take advantage of the weight...
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7077884 |
Hydrogen sulfide scrubber using polymeric amine and associated methods
A hydrogen sulfide scrubber includes first and second scrubber tanks with scrubber media contained therein. Scrubbing solution circulators each include a dispenser for dispensing scrubbing solution...
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7014684 |
Method for the treatment of waste gas from a cellulose plant
A process and a device for cleaning waste gas from pulp production, especially for cleaning waste gases from a bleaching reactor. Aerosols contained in the waste gas are removed and the gaseous...
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6969500 |
Method for separating titanium tetrachloride
The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of...
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6946105 |
Process and apparatus for the recovery of metal oxide particles
A process for the recovery of metal oxides from a solution containing metallic salts by spray roasting of these solutions. The process is particularly suitable for spray roasting spent pickling...
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6759018 |
Method for point-of-use treatment of effluent gas streams
A system for abating undesired component(s) from a gas stream containing same, such as halocompounds, acid gases, silanes, ammonia, etc., by scrubbing of the effluent gas stream with an aqueous...
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6235961 |
Process for pretreating cracked gas before caustic tower treatment in ehtylene plants
An inline, high-shear mixer is provided in a cracked gas stream upstream of a caustic tower in an ethylene production unit. Spent caustic is withdrawn from the bottom of the caustic tower and...
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6221133 |
Fluid separation packing
The invention provides a cellular packing including a vapor/liquid separation device that can be stacked vertically with minimum wasted space. The packing uses static vanes in each cell to direct...
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6214242 |
Direct injection air stripping method and apparatus
A method and apparatus for stripping a volatile compound from waste water comprises creating a high velocity spray of air and stream of water at a first inlet to a first expansion chamber to...
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6190629 |
Organic acid scrubber and methods
A scrubber assembly for removal of water soluble and/or alkaline gases from an exhaust stream uses a scrubber mixture contained within at least one scrubber vessel. Preferably the scrubber mixture...
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6179901 |
Apparatus and method for producing HF from phosphate rock
Hydrogen fluoride production apparatus removes phosphate rock dust from a hot gas mixture exhausted from a phosphate rock defluorination kiln; cools the hot gas mixture in a heat exchanger to a low...
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6132497 |
Dust suppression system
A dust suppression system for suppressing dust associated with a movement of dust producing material along an open conduit may include a hood assembly positioned adjacent the open conduit so that...
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6063163 |
Co-current and counter-current gas dehydration system
According to the present invention, an inexpensive co-current and counter-current gas dehydration system, contactor apparatus, and operating method is provided which does not result in a need to...
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5928412 |
Method and apparatus for cleaning a vapour
A method is disclosed by which vapour is cleaned of gaseous impurities during evaporation of polluted liquids. Vapour is conducted via a boiler, a compressor to a heat exchanger (12) in which...
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5803955 |
Apparatus for dust control
An apparatus for controlling dust generated during a material transfer operation includes an environmental enclosure surrounding a conveyor bed, the enclosure having a series of baffles creating...
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5713970 |
Multi-chambered scrubbing apparatus for dust control
An apparatus for controlling dust generated during a material transfer operation includes an environmental enclosure surrounding a conveyor bed, the enclosure having a series of baffles creating...
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5449398 |
Methods for dechlorynation disposal of polyvinyl chloride wastes and apparatus thereof
The present invention provides methods for making gases generated in the treatment of hydrogen chloride wastes harmless by neutralization and dissolving, and an apparatus thereof, and a...
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5397381 |
Method of cooling and optionally cleaning a hot gas, especially of a gas generated upon combustion or gasification of carbon-containing fuels
In a method of cooling and scrubbing a hot gas a hot gas is supplied with a removal pipe into a scrubber. The hot gas is introduced into at least one liquid bath of the scrubber. The hot gas is...
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5330563 |
Process for separating a volatile organic compound from a gas
A process is disclosed for recovering a volatile organic compound at a recovery of 90 to 96% by volume from a gas generated from gasoline, kerosine, benzene, and alcohol discharged from storage...
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5078759 |
Apparatus and method for precipitating particles from a gaseous stream
An apparatus for precipitating particles, debris and the like from a gaseous stream, comprises an enclosed vessel partly filled with a liquid to a level and having a bottom wall; a passageway...
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4880445 |
Multiple stage gas absorber
Apparatus for and method of absorbing a gas into a liquid in a multiple stage absorption process wherein the gaseous products from each stage is reintroduced into fresh liquid in subsequent stages.
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4775395 |
Integrated process for the treatment of a methane-containing wet gas in order to remove water therefrom
A gas containing methane and water is treated in order to remove water therefrom. The process comprises a step of contacting the gas with a liquid phase formed of water and solvent, whereby water...
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4710211 |
Cryogenic process for the selective removal of acidic gases from mixtures of gases by solvents
A cryogenic process is disclosed for the selective removal of acidic gases from natural gases or from synthesis gases by adsorption in two towers and cooling of the gas outcoming from the first...
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4705542 |
Production of synthesis gas
Deposition of ash in the outlet conduit of a synthesis gas quench chamber is reduced or eliminated by providing a streamlined configuration at the mouth and throat of the outlet conduit.
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4614645 |
Method for treating effluent in exhaust gas treating apparatus
A method for treating an effluent in an exhaust gas treating apparatus, which method comprises the steps of introducing the exhaust gas into a dry dust collector where a dust contained in the...
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4612174 |
Method of removing noxious substances from gases
Waste gases and other noxious substances which are formed in connection with chemical processes and the manufacture of devices such as semiconductors and covalent hydrides and element organic...
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4533530 |
Process for the separation of volatile chlorine compounds from the exhaust gases resulting from the chlorination of titanium-containing raw materials
A process for the separation of volatile chlorine compounds from exhaust gases resulting from the chlorination of titanium-containing raw material by the treatment of the exhaust gases with an...
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4479812 |
Sorption fractionation system for olefin separation
A continuous fractionation technique is provided for recovering ethylene from an olefinic feedstock comprising C 3 + higher olefins. This technique provides methods and means for contacting the...
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4469491 |
Separation of diisopropylether from hydrocarbon streams
A process for the separation of diisopropylether from a hydrocarbon stream containing it, by contacting the stream with ethylene glycol whereby the diisopropylether is absorbed by the glycol and a...
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4466808 |
Method of cooling product gases of incomplete combustion containing ash and char which pass through a viscous, sticky phase
Hot gases containing ash and char which pass through an undesirable viscous, sticky phase on cooling through an intermediate temperature range, are cooled in a first cooling zone including a...
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4450145 |
Process for the removal of SO.sub.2 from gas streams
The removal of SO 2 from two or more gas streams of differing SO 2 content is accomplished by feeding each of the streams to an absorbent so that the more dilute SO 2 -containing stream or...
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4341536 |
Method for continuously removing fine dust particles from gases
A method for continuously removing fine dust from gases which contain them, consisting of: introducing the gas at a gas linear velocity of 10 to 80 m/sec and a liquid at a rate such that the...
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4332596 |
Energy efficient scrubbing of sulfur compounds from moist gaseous mixtures
In the selective removal of sulfur compounds, e.g., H 2 S, COS, from moist gaseous mixtures, comprising scrubbing the gaseous mixture in a column at a temperature below 0° C., with toluene or...
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4328011 |
Process for purifying and cooling partial oxidation gases containing dust-like impurities
The hot partial oxidation gases which are formed in a gasifier for solid or liquid fuel are passed first into a dust separator under conditions where 70 to 95% of the impurities are eliminated,...
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4272269 |
Cryogenic expander recovery process
A process is described for the separation and recovery of C 3 and heavier hydrocarbons from a gaseous hydrocarbon containing feed stream such as natural gas or refinery gas in which the gaseous...
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4235607 |
Method and apparatus for the selective absorption of gases
A process and apparatus for removing an impurity from a gas by means of selective absorption of a gas impurity by a suitable absorbent. The absorbent and gas are contacted in a contacting zone...
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4227890 |
Process for cooling and drying chlorine gas
A process for cooling and drying wet chlorine gas with concentrated sulfuric acid in which in the final drying stage the acid is maintained at a temperature which cools the chlorine gas to its...
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4220528 |
Process for disoxidating gas or water
A process for disoxidating a gas which comprises contacting a gas being inert to hydrazines with a solution containing (A) at least one of hydrazines and (B) at least one of (i) quinones having a...
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4149857 |
Process for the two-stage separation of ammonia
The invention relates to a process for the separation of condensable and absorbable gas components having a critical temperature above 30° C. from a mixture with inert gases, being absorbable at...
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4147756 |
Combustion gas scrubbing system
In a cooperative combination of two scrubbing systems, the first scrubbing system operates upon combustion gases with an aqueous solution to remove hydrogen chloride gas and other chlorine...
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4101297 |
Process for recovering a solvent vapor
The present invention is a process for recovering solvent vapor which comprises absorbing solvent vapor in a first absorbing liquid, and subsequently stripping the solvent vapor to regenerate the...
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4078503 |
Method and apparatus for treating off-gas from a furnace for burning organic material in an oxygen deficient atmosphere
A method and apparatus for treating off-gas from a furnace for burning organic material in an oxygen deficient atmosphere by passing the hot exhaust gases from the furnace ladened with combustible...
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4058375 |
Ammonia recovery by scrubbing and condensing
This invention teaches a method and apparatus for recovering ammonia from a waste gas mixture comprising ammonia with air, and water vapor or steam. The waste gas is bubbled upwardly through an...
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4045190 |
Method for regulating the flow of liquid through mass transfer columns
A method is provided for controlling the flow of liquid through a column separated by vertically spaced plates into compartments to determine the height of liquid on a plate wherein the liquid is...
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