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7306776 |
Method and an apparatus for processing flue gas scrubber material flows
A method for processing flue gas scrubber material flows. The flue gas is scrubbed with a calcium-based absorbent containing washing fluid for absorbing sulphur oxides from the flue gases, and the...
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7294322 |
Collection scoop for flue gas desulfurization systems with bleed streams or ex situ forced oxidation
A scoop is used to collect a liquid slurry upstream of an internal collection tank. The scoop is in fluid communication with a downcomer, which receives at least part of the collected slurry,...
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7288235 |
Method and installation for purifying gas
The invention relates to a method and an installation for separating sulphur dioxide from exhaust gas, wherein sea water is added to the exhaust gas in an absorption column and the sea water...
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7250483 |
Inhibition of catalytically active impurities in polycarbonate by the melt transesterification process
An improvement to the melt transesterification process for the preparation of polycarbonate is disclosed. The improvement entails adding to the process between its medium viscosity reactor and a...
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7247284 |
Method and apparatus for regeneration of flue gas scrubber caustic solutions
A process to regenerate wet flue gas scrubber purge liquid into NaOH caustic suitable for make-up caustic for the scrubber is disclosed. Further, sulfur is removed from waste effluent in the form...
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7238223 |
Acoustical stimulation of vapor diffusion system and method
An apparatus for removing constituents from a fluid stream is provided. The apparatus includes a duct, a collection device, a sorbent injector, and an acoustic generator. The duct has a fluid...
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7179438 |
Methods and apparatus for recovering gypsum and magnesium hydroxide
The present invention provides methods and apparatus for treating flue gas containing sulfur dioxide using a scrubber, and more particularly relates to recovering gypsum and magnesium hydroxide...
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7153481 |
Method and device for separating sulphur dioxide from a gas
A device ( 1 ) for separating sulphur dioxide from a gas ( 4 ) by means of an absorption liquid has an inlet ( 2 ) for gas ( 4 ) containing sulphur dioxide, an outlet ( 18 ) for gas ( 16 ), from...
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7094382 |
Method and a device for the separation of sulphur dioxide from a gas
A device ( 1 ) for separating sulphur dioxide from a gas has an inlet ( 2 ) for the gas ( 4 ) and an outlet ( 42 ) for gas ( 40 ), from which sulphur dioxide has been separated. An apertured plate...
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7052662 |
NOx, Hg, and SO2 removal using alkali hydroxide
A process and apparatus for removing SO 2 , NO, and NO 2 from a gas stream having the steps of oxidizing a portion of the NO in the flue gas stream to NO 2 , scrubbing the SO 2 , NO, and NO 2 ...
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7048899 |
Removing NOx, SO2, and Hg from a gas stream using limestone regeneration
A process and apparatus for removing SO 2 , NO, and NO 2 from a gas stream having the steps of oxidizing a portion of the NO in the flue gas stream to NO 2 , scrubbing the SO 2 , NO, and NO 2 ...
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7037434 |
Integrated water treatment and flue gas desulfurization process
A water stream containing hardness minerals is subjected to a water treatment process using an alkali agent to precipitate the hardness minerals and to produce a softened water stream is used to...
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7022296 |
Method for treating flue gas
A multiple-field precipitator, flue-gas treating device, in accordance with the principles of the invention, includes a first section having a dual-function, sensible-cooling heat...
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6997119 |
Combustion emissions control and utilization of byproducts
A process for controlling both fireside ash deposits and corrosion, and fouling, corrosion, and emissions due to SO 3 formation within a fossil-fuel-fired combustion system, such as a furnace...
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6960332 |
Process for purifying aqueous buffer solutions
The present invention describes a procedure for the removal of sodium sulphate from a phosphate solution that has been used for absorption of SO 2 from flue gases, in which a precipitate forms...
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6939523 |
Method of removing SO3 from flue gases
A calcium hydroxide slurry is injected into the off gases in the exhaust duct of an industrial plant which burns sulfur containing fuels. The calcium hydroxide slurry reacts with SO 3 produced as...
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6913737 |
Method for the treating in exhaust gas and exhaust gas treating system
The present invention provides a method for the treatment of mercury present in exhaust gas wherein, after a chlorinating agent is added to exhaust gas containing nitrogen oxides, sulfur oxides and...
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6881389 |
Removal of H2S and CO2 from a hydrocarbon fluid stream
A system for removal of Hydrogen Sulfide (H 2 S) and/or Carbon Dioxide (CO 2 ) from natural gas via absorption and disassociation utilizing a sea water contact system. In the preferred embodiment...
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6863875 |
Flue gas treating system and process
In a flue gas treating system, an absorption tower ( 21 ), a reheating section ( 22 ) and a fan ( 23 ) are arranged in line on a vertical axis so as to function as at least a part of a stack for...
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6841138 |
Method and device for temperature reduction of exhaust gas by making use of thermal water
A system for reducing the temperature of exhaust gas in an incinerator or boiler equipment having an exceedingly small size and avoiding any difficulties caused by damage to the wall surface of a...
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6803025 |
Process for removing SO3/H2SO4 from flue gases
A process of using sodium carbonate and sodium bicarbonate solutions to remove SO 3 and other acidic gases or vapors from a flue gas without substantially decreasing the amount of sulfur dioxide...
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6759019 |
Process for desulfurization of exhaust gas with seawater
A method for removing an acidic component such as sulfite gas (SO 2 ) contained in an exhaust gas comprising by using a system comprising (a) a gas-liquid contact apparatus composed of an...
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6752975 |
Combustion exhaust gas treatment process and treatment apparatus
Denitrated combustion exhaust gas is desulfurized with ammonia, the waste water obtained from washing the desulfurization waste water or dust ash is filtered using calcium carbonate, the pH of the...
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6749820 |
Chloride/sulfate removal system
The liquid cooling spray in a gas conditioning chamber is modified by the addition of an alkali to scrub sulfuir dioxide and other acid forming gases and a separation unit to remove particles that...
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6737031 |
Method of simultaneously reducing CO2 and SO2 emissions in a combustion installation
The method of simultaneously reducing carbon dioxide (CO 2 ) emissions and sulfur dioxide (SO 2 ) emissions produced by the combustion of carbon-containing matter in a hearth consists in injecting...
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6733735 |
Method and device for temperature reduction of exhaust gas by making use of thermal water
A system for reducing the temperature of exhaust gas in an incinerator or boiler equipment having an exceedingly small size and avoiding any difficulties caused by damage to the wall surface of a...
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6722295 |
Method for the combined reduction of nitrogen oxide and sulfur dioxide concentrations in the furnace region of boilers
A method for the combined reduction of sulfur dioxide, SO 2 , and nitrogen oxides, NO x , in the gas stream of a furnace from the combustion of fossil fuels is disclosed. In a narrow gas...
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6684627 |
Method of purifying exhaust gas from internal combustion engine
The present invention is a method of solidifying sulfur component being the cause of “SOx poisoning” by use of a sulfur solidifier. The solidifier includes a metal element having a function of...
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6656440 |
Exhaust gas desulfurizing method and system therefor
A method and system for desulfurizing flue gas in which desulfurization is effected by bringing absorbent slurry containing limestone into contact with flue gas. The method classifies absorbent...
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6638485 |
Process for treating exhaust gas and exhaust gas treating equipment
A process for treating an exhaust gas contaminated with dust, Hg, NO x , and SO x is provided by adding a mercury chlorinating agent, such as, for example, HCl, NH 4 Cl, or Cl 2 , and ammonia to...
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6572832 |
Method of removing sulfur dioxide from a gaseous stream in a wet scrubbing unit
Sulfur dioxide is removed from a gaseous stream using an aqueous scrubbing slurry of magnesium and calcium scrubbing components where the process is carried out where lime and magnesium hydroxide...
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6555082 |
Method for wet flue gas desulfurization and device for implementing said method
A method and apparatus for wet flue gas desulfurization in a two-circuit washer having two washers for an absorption agent based on suspensions containing calcium compounds, a sump for supplying...
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6503471 |
Process for malodorous gas treatment
Malodorous gases such as amines, organosulfur compounds, hydrogen sulfide, styrene and aldehydes are economically and efficiently treated at ambient temperature and pressure by a catalytic...
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6464952 |
Sulfur dioxide abatement method
A pollution control apparatus and method to scrub sulfur dioxide uses a lime slurry consisting of small diameter hydrated lime particles injected into the cooling water of a gas cooling tower. The...
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6428760 |
Method for desulfurizing exhaust gas
The present invention relates to the improvement of a replenishment method of a magnesium-based compound and to the improvement of a double decomposition method, which can be used in a magnesium...
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6416725 |
Removal of contaminants from gas streams in rayon production
Sulfurous gas streams comprising hydrogen sulfide and carbon disulfide, such as produced as a by-product of the rayon-forming process, are processed to recover the components in a useable form. The...
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6416724 |
Method for cleaning of combustion gas containing impurities
A method is provided for cleaning a combustion exhaust gas containing impurities, such as sulfur oxides and hydrochloric acid, with an additive, such as calcium hydroxide, in a reactor. The...
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6379639 |
Process for purification of flue gas
A method for purifyiing flue gas derived form incinerators burning refuse, wood, or sludge, in which the flue gas is cooled in a spray drier. A dust remover removes the dust from the flue gas. The...
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6372187 |
Alkaline sorbent injection for mercury control
A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali...
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6365099 |
In situ gas scrubbing method and system for odor and corrosion control in wastewater collection systems
A process and system for reducing the concentration of odorous contaminants, primarily hydrogen sulfide, in the vapor spaces of sewage handling and treatment systems, primarily the vapor spaces of...
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6299848 |
Process for removing sulfur dioxide out of a gas
A method for removing sulfur dioxide out of a gas is provided. The sulfur dioxide contaminated gas is contacted with an aqueous solution or slurry that contains a reagent, such as sodium carbonate...
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6284208 |
Method for removing mercury and sulfur dioxide from gases
A process is provided for the removal of mercury and sulfur dioxide out a flue gas from, for example, power stations, smelters, waste incineration plants and crematories, by washing the flue gas...
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6267802 |
Composition apparatus and method for flue gas conditioning
The method and apparatus of the present invention are directed to conditioning particulate-containing gas streams using novel additives. The additive is an organometallic salt, preferably of a...
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6254843 |
Process for the reclamation of calcium sulfite produced by a calcium-based FGD system
A method of producing calcium sulfate with a flue gas scrubbing facility having a gas-liquid contactor that uses a calcium-based slurry to absorb sulfur dioxide from a flue gas containing acidic...
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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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6217839 |
Removal of sulfur compounds from gaseous waste streams
Sulfur dioxide and other sulfur compounds are removed from various waste gas streams including those from incineration, refinery sulfur processing, coal burning, or metal smelting operations. The...
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6214313 |
High-purity magnesium hydroxide and process for its production
Magnesium hydroxide of high purity, having a fine particle size suitable for use in flame retardants and other high-end uses, is produced by utilizing flue gas desulfurization system process slurry...
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6187277 |
Method for purifying gases
A method is provided for removing sulfur dioxide and carbon dioxide out of gases from, for example, the combustion of sulfur containing fossil fuels. The sulfur dioxide and carbon dioxide...
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6180074 |
Method for processing flue gases containing sulphur oxides
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6177056 |
Process for recycling lead-acid batteries
A process for recovery of substantially all the sulfur in a spent lead-acid battery as Na 2 SO 4 is disclosed. The process comprises (a) breaking the batteries to remove the acid, (b) separating...
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