摘要:
Pollution control substances may be formed from the combustion of oil shale, which may produce a kerogen-based pyrolysis gas and shale sorbent, each of which may be used to reduce, absorb, or adsorb pollutants in pollution producing combustion processes, pyrolysis processes, or other reaction processes. Pyrolysis gases produced during the combustion or gasification of oil shale may also be used as a combustion gas or may be processed or otherwise refined to produce synthetic gases and fuels.
摘要:
An effluent gas scrubber and a method of scrubbing effluent gases are provided. An inlet port receives an effluent gas. The gas passes through successive chambers in which it is sprayed with a scrubbing fluid. An oxidizer within the scrubbing fluid is effective to oxidize non-water soluble gases within the effluent gas. An oxidation-reduction potential probe measures the oxidation-reduction potential of the scrubbing fluid and adds the oxidizer to the scrubbing fluid as needed. A pH probe measures the pH of the scrubbing fluid and adds a base to the scrubbing fluid as needed to maintain the pH at or above a threshold such as pH 7, or pH 12.
摘要:
An oxygen-absorbing composition including iron and a soluble tartrate. A method of absorbing oxygen from a closed environment including the steps of providing an oxygen-absorbing composition containing iron and a tartrate, injecting water into the composition, and placing the composition into the closed environment. An oxygen-absorbing packet containing iron and a tartrate. All of the foregoing-mentioned compositions preferably include an electrolyte. The tartrates may be selected from the group which may include solium acid tartrate, potassium acid tartrate, potassium sodium tartrate tetrahydrate and sodium tartrate dihydrate, but are not limited thereto.
摘要:
Disclosed is an apparatus for processing an exhaust gas containing an alkaline substance, the exhaust gas being emitted when activating a carbon material with an alkaline substance. The apparatus includes a humidified-gas preparing device for preparing a humidified gas, which exhibits a dew point of 25° C. or more; a gas mixing device for mixing the humidified gas with the exhaust gas at a temperature equal to or greater than the dewpoint of the humidified gas, thereby generating a hydroxide of metallic alkali; and a trapping device for trapping the generated hydroxide out of the mixture gas of the humidified gas and the exhaust gas.
摘要:
An exhaust gas treatment system, which comprises: an arithmetic processing part wherein the type of gas, the flow rate and the supply time of a gas supplied to a gas-using facility are inputted as parameters, and the type of gas, the flow rate and the supply time of an additive gas is calculated based on these parameters; an additive gas supply part, which supplies an additive gas while controlling the type of gas, the flow rate and the supply time of the additive gas in accordance with indication signals sent from the arithmetic processing part; and a removal part wherein the additive gas is added to an exhaust gas exhausted from the gas-using facility, and a target compound included in the exhaust gas is removed by reacting the additive gas and the target compound included in the exhaust gas.
摘要:
A plant for producing silicon thin-film solar cells has at least one chamber (1) in which the silicon thin-film is deposited from silicon hydride gas during the production process. The chamber (1) is subsequently cleaned of contaminants by an etching process e.g. with sulfur hexafluoride as the etchant gas. The waste gas formed during the production process and containing silicon hydride is supplied to a burner (6) and subsequently filtered. The waste gas formed during the etching process and containing sulfur hexafluoride is washed with water after having been supplied to a burner. The hydrofluoric acid formed by burning of the sulfur hexafluoride is separated from the washing water.
摘要:
Gas supplying method and system in which effective component gas in exhaust gas can be separated and purified efficiently to be resupplied regardless of variation in the flow rate or composition of the exhaust gas and consumed gas can be replenished efficiently. In a method for collecting exhaust gas discharged from a gas using facility, separating/purifying effective component gas contained in the exhaust gas and supplying the effective component gas thus obtained to the gas using facility, the exhaust gas discharged from the gas using facility is added with a replenishing gas of the same components as the effective component gas before the effective component gas is separated and purified.
摘要:
A system and method for abating a simultaneous flow of silane and arsine contained in an exhaust gas of DRAM processing chamber (12). The system includes a CVD abatement apparatus (20) and a resin-type absorber (22). The CVD abatement apparatus comprises an enclosure (24) that defines a chamber (26) for receiving the exhaust gas. The enclosure contains a plurality of removable substrates (32) arranged as a series of baffles inside the enclosure. As the exhaust gas flows through the CVD abatement apparatus, the silicon within the silane is deposited as a film upon the substrates by chemical vapor deposition. The arsine continues to flow through the CVD apparatus to the absorber where it is adsorbed by the resin contained therein. After the film has reached a particular thickness, the substrates can be removed from the enclosure, cleaned of the film and returned to the enclosure for further use.
摘要:
A method and apparatus for reducing the level of metal hydride found in effluent of a process chamber is disclosed. The method includes introducing hydrogen peroxide into the process chamber to react with metal hydride and reduce the level of metal hydride to a level under a permissible exposure limit. Additionally, an apparatus having a process chamber and a vaporizing device for introducing hydrogen peroxide into the process chamber is disclosed.
摘要:
A new method of silane abatement is achieved. The novel silane abatement system comprises a water-filled chamber within an outer chamber. An air intake is located in one upper portion of said outer chamber and an exhaust output is located in another upper portion of the outer chamber. A silane gas intake pipe runs into the outer chamber and has its output under water in the water-filled chamber. A drain is connected through a valve at a bottom portion of the water-filled chamber. Many safety features are built into the wet abatement system, including temperature and water level sensors, water sprinklers, and means for shutting off air supply, exhaust, and silane intake. Waste silane gas is bubbled into a water-filled chamber. The waste silane gas is reacted with oxygen in water in the water-filled chamber whereby SiO2 precipitates are formed and wherein the SiO2 precipitates settle to a bottom surface of the water-filled chamber. The SiO2 precipitates are drained out of the water-filled chamber to complete the abatement process.