摘要:
A method and apparatus for removing methane from ventilation air in a mining situation is provided by a carbonation reactor CAR which reacts a ventilation air methane stream VAR with a carbon dioxide scavenger to form a mineral carbonate which is passed to a calcination reactor CAL in which a regeneration reaction decomposes the mineral carbonate back to a mineral or mineral oxide. Additional heat may be added to the CAL by steam, solar energy or by burning drainage gas, natural gas, or coal. Steam or supercritical fluid given off by the CAR can be utilized for heating, cooling, or energy generation. The carbon dioxide scavenger can be any metal, metal oxide, mineral or mineral waste having a carbonation tendency, used in the process referred to as “Mineral Carbonate Looping Reactor” (MCLR), or can be stone dust from the mining site used in the process referred to as “Stone Dust Looping Reactor” (SDLR).
摘要:
System and method for removing molecular contaminants from an air stream are disclosed. The system includes first, second and third filter. The first filter removes organic contaminants from an air stream passing through the first filter. The second filter is downstream of the first filter, is physically and chemically exchangeable with the first filter and removes organic contaminants from the air stream output of the first filter. The third filter, downstream of the second filter, is not exchangeable with the first filter or the second filter. The first position filter can be replaced by the second filter in the second position when the first filter in the first position becomes depleted as detected. A new filter in the second filter position is inserted. Replacing the depleted first filter with the second downstream filter reduces costs and waste while inserting the new filter in the second position ensures removing organic contaminants.
摘要:
In one embodiment, a process for the purification of CO2 from chlorinated and non-chlorinated hydrocarbons, comprising: contacting a CO2 stream with a metal oxide catalyst, wherein the stream comprises the CO2 and impurities comprising the non-chlorinated hydrocarbons and the chlorinated hydrocarbons; interacting the impurities with the catalyst to form additional CO2 and metal chloride; and regenerating the catalyst by contacting the metal chloride with an oxygen containing gas stream. In another embodiment, a process for the purification of CO2 from chlorinated hydrocarbons and non-chlorinated hydrocarbons, comprising: contacting a CO2 stream with a metal oxide catalyst, wherein the CO2 stream comprises the CO2 and impurities comprising the non-chlorinated hydrocarbons and the chlorinated hydrocarbons; oxidizing the impurities with catalyst oxygen to form additional CO2 and converting the chlorine to metal chloride; and regenerating the catalyst by contacting the metal chloride with an oxygen containing gas stream.
摘要:
There is described a plant for reducing bitumen fumes comprising: a) an intake system for drawing in the bitumen fumes and mixing those fumes with external air (ambient air) to produce an admixture of external air/bitumen fumes; b) a system for introducing this admixture into a boiler (9) as a primary supply (primary air) so as to maintain the admixture in the boiler (9) for at least two seconds; c) a sensor which is for measuring oxygen and which is positioned in the discharge chimney of the burnt materials and which is capable of adjusting the proportion between the external air and the bitumen fumes in the admixture. The main advantage of the described plant is the reduction of the pollutants in the fumes discharged from the chimney of the installation to a level below the levels imposed by the standard.
摘要:
A combined particulate filter and hydrocarbon trap for use in collecting particulate matter and trapping hydrocarbons present in exhaust gas is disclosed. The particulate filter comprises a porous substrate having both inlet and outlet surfaces which are separated from each other by the porous substrate wherein either or both of the inlet and outlet surfaces are coated with a washcoat comprising a hydrocarbon adsorbent material. The hydrocarbon adsorbent material is one or a combination of molecular sieves and the hydrocarbon adsorbent comprises both Ag and Pd, both Ag and Pt or all three of Ag, Pt and Pd.
摘要:
The purpose of/problem to be addressed by the present invention is to provide: an Fe(II)-substituted beta-type zeolite useful for the catalytic removal of a variety of gases; and a production method therefor. The SiO 2 /Al 2 O 3 ratio in this Fe(II)-substituted beta-type zeolite is equal to or more than 7 but less than 10. This Fe(II)-substituted beta-type zeolite is obtained by being subjected to ionic exchange with Fe(II) ions. It is preferable that the Fe(II) loading amount be in the range of 0.001-0.4mmol/g of the Fe(II)-substituted beta-type zeolite. It is preferable that the Fe(II)-substituted beta-type zeolite be produced using a method in which a beta-type zeolite having an SiO 2 /Al 2 O 3 ratio of equal to or more than 7 but less than 10 is dispersed in an Fe(II) water-soluble-compound aqueous solution, and then mixed and agitated to cause the beta-type zeolite to carry Fe(II) ions.
摘要:
The purpose of/problem addressed by the present invention is to provide: an Fe(II)-substituted MEL-type zeolite useful for the catalytic removal of a variety of gases; and a production method therefor. The SiO 2 /Al 2 O 3 ratio in this Fe(II)-substituted MEL-type zeolite is in the range of 10-30 inclusive. This Fe(II)-substituted MEL-type zeolite is obtained by being subjected to ionic exchange with Fe(II) ions. It is preferable that the Fe(II) loading amount be in the range of 0.001-0.4mmol/g of the Fe(II)-substituted MEL-type zeolite. It is preferable that the Fe(II)-substituted MEL-type zeolite be produced using a method in which an MEL-type zeolite having an SiO 2 /Al 2 O 3 ratio in the range of 10-30 inclusive is dispersed in an Fe(II) water-soluble-compound aqueous solution, and then mixed and agitated to cause the MEL-type zeolite to carry Fe(II) ions.
摘要翻译:的/问题由本发明解决的目的是提供:铁(II)取代的用于催化去除多种气体的MEL型沸石有用; 和制造方法。 的SiO 2 /的Al 2 O 3比在此的Fe(II)取代的MEL型沸石是在10至30以下的范围。 此的Fe(II)取代的MEL型沸石通过经受以Fe(II)离子的离子交换获得。 优选做过的Fe(II)担载量是在0.001-0.4mmol / g的铁(II)的范围内取代的MEL型沸石。 优选做过的Fe(II)取代的MEL型沸石使用一种方法,其中具有的SiO 2 / Al的2 O 3比在10至30以下的范围分散于铁MEL型沸石来制备 (II)的水溶性化合物wässrige溶液中,然后混合并搅拌,以使MEL型沸石携带的Fe(II)离子。
摘要:
La présente invention concerne une peinture ou un vernis pour assainir l'air caractérisée en ce qu'elle comprend un liant comprenant un polymère acrylique ou alkyde portant au moins une fonction fixatrice de formaldéhyde destinée à réagir avec du formaldéhyde présent dans l'air pour le fixer de manière covalente et des additifs. Elle trouvera son application pour les peintures ou vernis décoratifs pour murs, plafonds, boiseries, sols ou industriels pour sols ou ameublements pouvant être appliquées sur divers supports pour assainir la qualité de l'air intérieur d'une pièce en fixant le formaldéhyde libre.
摘要:
A method of imposing a variable load upon the internal combustion engine as it is typically used in the performance of degassing operations includes coupling a crankshaft of the internal combustion engine to a secondary internal combustion engine.