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7641717 |
Ultra cleaning of combustion gas including the removal of CO2
Ultra cleaning of combustion gas to near zero concentration of residual contaminants followed by the capture of CO 2 is provided. The high removal efficiency of residual contaminants is...
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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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7588627 |
Process for the removal of H2S and mercaptans from a gas stream
The invention relates to a process for the removal of, H 2 S and mercaptans from a gas stream comprising these compounds, which process comprises the steps of: (a) removing H 2 S from the gas...
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7424808 |
Configurations and methods of acid gas removal
A plant includes an absorber ( 105 ) that receives a feed gas ( 10 ) at a pressure of at least 400 psig and comprising at least 5 mol % carbon dioxide, wherein the absorber ( 105 ) is operated at...
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7377956 |
Method and system for processing natural gas using a rotary screw compressor
Method and system for processing natural gas containing contaminants through the use of one or more rotary screw compressors. A natural gas containing a contaminant (e.g., water or carbon dioxide...
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7311759 |
Process for purifying off-gases of a melamine plant
A two-stage process is provided for purifying off-gases from a high-pressure melamine plant. In the first stage, the off-gases are contacted with a recirculated urea melt containing melamine...
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7241470 |
Method for monitoring the course of a process using a reactive gas containing one or several hydrocarbons
The method applies to a process such as cementation or chemical vapor infiltration or deposition, the process being carried out in an oven and the method comprising setting operating parameters of...
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7189281 |
Method and system for treating contaminants and odors in airborne emissions
A second-generation rotating biofilter employing microorganisms in a microbiological film (biofilm) “mineralizes” contaminants, such as VOCs and odoriferous contaminants. Contaminated fluid,...
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7105039 |
Ozone remediation apparatus and methods
A method and apparatus is provided of adding ozone and ozone and oxygen and ozone and another oxidizer such as chlorine dioxide or an acidifying agent to contaminated environments including high...
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7101420 |
Self cleaning air filtration machine and a method for using the same
Self cleaning air filtration machine and a method for using same comprising; a filter with a motor driven belt or disk or counter rotating disks that are perforated, a spray bar, a recirculation...
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7025807 |
Method for absorbing vapors and gases from pressure vessels
The invention relates to a process for absorbing vapors and gasses by controlling overpressure in storage tanks during filling, transport and storing of fluids in liquid form. The process includes...
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7011696 |
Elimination process of fluorinated anionic surfactants
An elimination process of fluorinated anionic sufactants from exhausted gaseous streams, wherein the gaseous stream is put into contact with aqueous solutions having in the range from 3.5 to 13.8,...
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6974542 |
Method and apparatus for removing foaming contaminants from hydrocarbon processing solvents
A column of solvent containing foaming contaminants is provided. Gas is educted into the solvent in the column so as to generate foam in the column. The gas is educted into the column independently...
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6955705 |
Method and system for compressing and dehydrating wet natural gas produced from low-pressure wells
Method and system for compressing and dehydrating wet natural gas produced from a low-pressure well using a rotary screw compressor. A dehydrating agent is combined with wet natural gas within a...
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6946018 |
Method and apparatus for cleaning a gas
A method and apparatus for cleaning a gas comprising a rotatable centrifugal cylinder having passageways for flowing a gas stream with a liquid stream through the cylinder to centrifugally remove...
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6849105 |
Method and installation for treating effluent gas containing hydrocarbons
Prior to passing through pumping apparatus effluent gas containing hydrocarbons is subjected to washing by being sprayed with aromatic type oil in oil-recirculating washing apparatus. Polycyclic...
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6780223 |
Method and apparatus for treating an exhaust gas containing volatile organic compounds
A method and apparatus for treating an exhaust gas containing volatile organic compounds. The method includes the steps of: introducing an exhaust gas into a wet scrubber, so that the organic...
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6740226 |
Process for increasing hydrogen partial pressure in hydroprocessing processes
In a hydrocracking unit, the flash gases from the high-pressure separator are fed to the bottom of an absorption zone where the entering gases are counter-currently contacted with a lean solvent....
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6635094 |
Soot filter cake disposal
The present invention provides a method for the recovery of elemental carbon or soot produced during the partial oxidation reaction of a hydrocarbonaceous fuel and oxygen. An effluent stream of raw...
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6623537 |
Removal of soot in gasification system
The raw syngas generated in a partial oxidation gasifier also includes carbon soot which is removed and recovered from the syngas by scrubbing with water. The scrubbing water contains one or more...
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6398849 |
Process and apparatus for treating gaseous products of sol-gel manufacturing
A process deals with gaseous by-products and tarry materials during formation of sol-gel bodies. Gaseous products from a dehydroxylation reactor pass into a gas-fluid contactor. During the early...
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6358399 |
Process for separating ethane and ethylene by solvent absorption and hydrogenation of the solvent phase
A process and a device for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent ( 1 ) is absorbed in an absorption column ( 7 ) by a cooled solvent ( 9...
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6340429 |
Process and device for separating ethane and ethylene from a steam-cracking effluent by solvent absorption and hydrogenation of the solvent phase
A process for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent ( 1 ) is absorbed in an absorption column by a cooled solvent ( 9 ). At the bottom of...
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6334886 |
Removal of corrosive contaminants from alkanolamine absorbent process
A process is provided for removing CO 2 and/or H 2 S from a gas mixture containing as impurities CO 2 and/or H 2 S and at least one other impurity selected from the group consisting of a cyanide...
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6325983 |
Nox scrubbing system and method
A treatment system for process exhaust streams containing NOx. The system includes a plurality of sequential scrubbing assemblies that collectively receive and contact a process exhaust stream...
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6245128 |
Process for the reclamation of spent alkanolamine solution
A process for the reclamation of spent aqueous alkanolamine solutions by contacting a spent aqueous alkanolamine solution with a strong base ion exchange resin for time sufficient to sorb from the...
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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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6174498 |
Odor control system
An odor control system and method for removing unwanted odorous airborne constituents in which the gas stream is flowed through a compact, boxlike housing having a plurality of sequentially...
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6174440 |
Device and method for processing a fluid by two-phase compression and fractionation
The invention is a device for processing a fluid F comprising at least one fraction A to be separated, the fraction to be separated being soluble in a solvent phase. The device includes at least...
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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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6019818 |
Combination quenching and scrubbing process and apparatus therefor
Quenching and scrubbing are accomplished simultaneously in a single downflow apparatus which functions both as an adiabatic quencher and a packed bed scrubber. A special feature of the...
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6017384 |
Nozzle arrangement for a scrubbing column
A nozzle arrangement in which the nozzles have a scrubber, especially for flow gas desulfurization, are laid in accordance with the following: (a) liquid concentrations of a component to be...
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6017383 |
Contaminant removal in a translating slug flow
A system and method for removing a contaminant from a carrier gas is provided including the steps of: introducing a liquid into a fluid conduit, wherein the liquid is characterized by a first fluid...
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6007604 |
Nozzle assembly for a scrubbing column
A nozzle arrangement for a scrubbing column for a flue gas in desulfurization, in which the scrubbing column has a sump, a baffle-free zone above the sump and a nozzle arrangement above the...
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5871563 |
Process for purifying inert gases
The invention relates to a process for the purification of an inert gas by subjecting the inert gas to a sorption treatment, especially gas scrubs. The invention comprises compressing the inert gas...
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5851265 |
Selective removal and recovery of sulfur dioxide from effluent gases using organic phosphorous solvents
A process for the selective removal and recovery of sulfur dioxide from effluent gases is disclosed. The sulfur dioxide is recovered in a sulfur dioxide absorption/desorption cycle which utilizes a...
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5846299 |
Recovering water soluble, volatile, organic compounds from bakery and other plant emissions
Recovery of ethanol from the exhaust stacks of a bread-baking oven is achieved by passing the stack emissions through an adiabatic humidifier where the emissions are humidified to near saturation....
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5756058 |
Process for purifying sulfur oxides-containing gas
Impurities such as halides and ammonia are efficiently removed from a gas containing Sox at a high concentration without any substantial addition of fresh water in a process for purifying a sulfur...
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5720926 |
Apparatus for removing a contaminant from a gas
An apparatus for removing a contaminant from a gas effluent. The apparatus comprises an absorption tower in which is placed a suitable packing where the gas effluent and contaminant-absorbing...
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5681470 |
Method of extracting light volatile solvents from a gaseous effluent by wet-scrubbing a gaseous effluent and biomethanation of the solvent-rich liquid
An improved method and apparatus for treating a gaseous medium polluted with volatile organic solvents to produce a purified gaseous medium and a separate methane-rich and combustible gas. The...
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5667651 |
Apparatus and associated method for reducing an undesired constituent of gas associated with wastewater and having sensor fault detection
A scrubber apparatus and controller include a gas sensor, and processor for controlling treatment of gas responsive to the sensed undesired constituent so as to enhance reduction of the undesired...
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5660615 |
Exhaust gas scrubbing process
Exhaust gas is brought into contact with a washing liquid chiefly consisting of water in at least two washing stages. In the last washing stage, fresh water and/or a washing liquid containing fresh...
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5643797 |
Process of continuously controlling the pH of an acid liquid including measuring the pH continuously with a glass electrode
The method of continuously controlling pH of an acid scrubbing liquid includes continuously withdrawing a constant partial stream from the scrubbing liquid; continuously measuring a pH in the...
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5634962 |
Method for removing hazardous gases from enclosed structures
A method for removing hazardous gases having water solubility from storage tanks by scrubbing steps is described. Additionally, a method for removing ethylene dichloride contamination from soil is...
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5620653 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Odor control system
An odor control system and method for removing unwanted odorous airborne constituents in which the gas stream is flowed through a compact, boxlike housing having a plurality of sequentially...
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5529612 |
Method and system for removing volatile organics from landfill gas
A method for removing volatile organics from landfill gas, in which the landfill gas, which consists primarily of methane and contains volatile organic components, is passed through a quantity of...
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5520722 |
Multiunsaturates removal process
The invention is a process for the preferential removal of a variable amount of alkynes and multiunsaturates from a gas stream containing at least hydrogen, olefins, alkynes, and multiunsaturates...
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5515686 |
Absorber fluid circuit for vapor recovery system
An absorber fluid circuit is provided for a volatile liquid vapor recovery system. The vapor recovery system includes at least one adsorbent bed for capturing volatile liquid vapor, a vacuum pump...
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5510567 |
Method of separating a mixture of gases by absorption
A method of separating a mixture of gases by the following stages: a) absorbing a part G2 of a gas mixture G1 by a solvent L1 in an absorption zone C1; b) expanding the solvent L1, leading to...
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5501776 |
Process for the regeneration of a desiccant
For the regeneration of a liquid desiccant, a stripping agent is used which is liquid at ambient temperature and pressure, and forms a heteroazeotrope with water, along with the following steps:...
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