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Patent

Process for the purification of exhaust gases containing oxides of nitrogen and sulfur

Brand Reinhold, +4 more
TLDR
In this paper, a process for the purification of exhaust gases containing oxides of nitrogen and sulfur obtained from combustion installations and industrial production processes was described by selective catalytic reduction of the nitric oxides with ammonia, subsequent catalytic oxidation of sulfur dioxide with oxygen and conversion into sulfuric acid of the sulfur trioxide obtained.
Abstract: 
A process is described for the purification of exhaust gases containing oxides of nitrogen and sulfur obtained from combustion installations and industrial production processes by selective catalytic reduction of the nitric oxides with ammonia, subsequent catalytic oxidation of sulfur dioxide with oxygen and conversion into sulfuric acid of the sulfur trioxide obtained.

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Patent

Process for making, and use of, anionic clay materials

Albert A. Vierheilig
TL;DR: Anionic clay compounds such as hydrotalcite-like compounds can be made by a process wherein a non-hydrotal citelike compound is heat treated and then hydrated to form a hydroxide-like compound as mentioned in this paper.
Patent

Flue-gas purification and reclamation system and method thereof

Baoquan Zhang, +1 more
TL;DR: A flue-gas purification system includes a flue gas cycling system, a reactor, an absorbent adding system having at least a catalytic absorbent, wherein the catalytic absorbsent is being gasified for reacting with the flue gases in the reactor in a homogenous gas-gas phase reacting manner as mentioned in this paper.
Patent

Monolithic catalysts for conversion of sulfur dioxide to sulfur trioxide

Timothy R. Felthouse, +1 more
TL;DR: In this article, chemically and thermally stable monolithic catalysts are disclosed having platinum or alkali metal-vanadium active phases for use in the conversion of sulfur dioxide to sulfur trioxide.
Patent

Regenerative process and system for the simultaneous removal of particulates and the oxides of sulfur and nitrogen from a gas stream

Mitchell R. Cohen, +1 more
TL;DR: In this paper, a process and system for simultaneously removing from a gaseous mixture, sulfur oxides by a solid sulfur oxide acceptor sorbent on a porous carrier, nitrogen oxide by ammonia gas and particulate matter by filtration and for the regeneration of loaded fine-divided solid SORs.
Patent

Flue gas purification plant

Anton Secklehner
TL;DR: In this article, a rotary cement kiln with at least one selective reduction catalyst for reducing nitrogen oxides present in the flue gas, and a dust precipitation system is described.
References
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Patent

Process for production of sulfur dioxide containing gases from waste products containing ammonium salts of sulfur acids

Furkert Herbert, +1 more
Patent

Air pollution control

P Lin
TL;DR: In this paper, the authors describe the process of controlling the reaction of the exhaust limes to the SULFUR DIOXIDE GAS (SO2) in order to control the setting time of the CEMENT.
Patent

Treatment of exhaust gas

Akimoto Hidetoshi, +6 more
TL;DR: In this paper, the authors proposed a method to oxide combustible components completely, thereby making the components harmless, and efficiently recover heat and pressure of exhaust gas by a method wherein exhaust gas containing combustible component is admixed with a combustion assistant and contacted with a catalyst under a pressure higher than the atmosphere.
Patent

Process for treating flue gas

Shimpei Matsuda, +6 more
TL;DR: In this article, a coal or petroleum combustion flue gas containing sulfur oxides and dust is treated by contacting the fluegas with a sulfur dioxide-oxidizing catalyst, thereby converting sulfur dioxide to sulfur trioxide, allowing the resulting sulfur trioxoxide to react with components of dust, absorbing the trioxide into the dust as a sulfate, and removing the dust.
Patent

Denitrification of waste gas with increased dust sepn. - by using catalyst for reductive denitrification and sulphur di:oxide conversion to sulphur tri:oxide

Naoji Tachibana, +1 more
TL;DR: In this paper, the authors used a catalytic dry redn and an electric dust separator after the heat exchanger of the denitrification plant, which can reduce NOx and also convert SO2 to SO3.