摘要:
Die Erfindung betrifft ein Verfahren zur Stickstofffixierung, insbesondere Ammoniaksynthese, in einem Plasmareaktor, wobei das Verfahren folgende Schritte umfasst: a) Bereitstellen eines Synthesegases aus einem oder mehreren gasförmigen Edukten zur Synthese eines Syntheseprodukts, wobei bei mehreren gasförmigen Edukten das Mischverhältnis in Stoffmengenanteilen der Edukte wie folgt bestimmt wird: a.1) Bestimmen aller Atomarten des Syntheseprodukts; a.2) Berechnen des reziproken Wertes des Gesamtwirkungsquerschnitts für die Ionisierung und Anregung von Atomen durch Elektronenstösse der jeweiligen Atomart; a.3) Multiplizieren der reziproken Gesamtwirkungsquerschnitts-Werte der Atomarten mit der Anzahl Atome der jeweiligen Atomart des Syntheseprodukts; a.4) Bestimmen des Mischverhältnis der Edukte, indem die Anzahl Atome der Atomarten der Edukte annähernd dem Verhältnis der multiplizierten reziproken Gesamtwirkungsquerschnitts-Werte für die entsprechenden Atomarten entspricht; b) Bereitstellen eines Prozessgases unter Beimischung eines gasförmigen Katalysators zu dem Synthesegas, wobei der Stoffmengenanteil des Katalysators im Prozessgas maximal 33% beträgt; c) Einleiten des Prozessgases in einen Plasmareaktor zur Synthese des Syntheseprodukts aus den Edukten; d) Abtrennen des Syntheseprodukts; e) Rückführung der überschüssigen oder restlichen Edukte und des gasförmigen Katalysators unter Beimischung neuer Edukte, um das Prozessgas mit den Mischverhältnissen gemäss Schritt a) und b) zu erhalten; f) Wiederholen der Schritte c) bis f).
摘要:
본 발명의 일 실시예에 따른 플라즈마를 이용한 암모니아 발생 장치는, 질소(N2)를 방전가스로 플라즈마 방전을 일으키고 상기 플라즈마의 에너지를 이용하여 물(H2O)로부터 수소(H2)와 산소(O2)를 생성하고 산소(O2)와 질소(N2)로 일산화질소(NO)를 생성하여 수소(H2)와 일산화질소(NO)를 공급하는 플라즈마 반응기, 상기 플라즈마 반응기로부터 공급되는 질소(N2)와 일산화질소(NO) 및 수소(H2)에 제1작용하여 암모니아(NH3)를 생성하는 제1반응기, 및 상기 플라즈마 반응기에서 생성되는 질산염 용액(NO3-)에 제2작용하여 암모니아(NH3)를 추가로 생성케 하는 제2반응기를 포함한다.
摘要:
There is provided a method for the synthesis of nitrogen oxides (NOx) comprising the steps of providing a gas mixture comprising oxygen and nitrogen; and heating the gas mixture to a temperature of at least 2300 K at a pressure of 10-100 bar in a thermal reactor forming a gas mixture comprising NOx. There is also provided a method for the production of HNO3.
摘要:
An apparatus for producing nitric oxide, the apparatus constituted of: a plasma generator comprising a variable power supply and in fluid communication with a circulation pump in a circulating system; a nitric oxide sensor in fluid communication with the plasma generator; and a processor configured to vary flow rate of the circulation pump and power supply to the plasma generator based on input from the nitric oxide sensor to achieve a desired nitric oxide level in the circulating system.
摘要:
The process contacts a gaseous stream (1) containing gaseous sulfur compounds and NOx with a catalyst system of either: an oxidation catalyst disposed on a high surface area support or an absorber material; or of discrete beds of a catalyst/sorber (A) comprising a noble metal catalyst component, a metal oxide sorber component, and a modifier; and an oxidation catalyst (B) disposed on a high suface area support or an absorber material. The sulfur and NOx compounds are removed from the exhaust (1) into catalyst system and retained therein to remove and retain the sulfur and NOx compounds. The reducing and regenerating gas (8) removes and retains said sulfur compounds and NOx is restored. In the two bed system, the catalyst system is regenerated with a regenerating gas (8) flowing in a direction reversed from direction of the exhaust gas (1).
摘要:
Disclosed is a stabilized hydroxylammonium nitrate or hydroxylamine-containing composition comprising said hydroxylammonium nitrate or hydroxylamine and a pyridine or pyridone salt, or an acid thereof, said pyridine or pyridone salt, or acid thereof, being present in said composition in an amount of between about 0.0001 % and about 2 %, based upon the weight of said composition. Also disclosed is a process for preparing this composition.
摘要:
Reduction of nitrogen oxides emissions from large scale combustors, such as coal-fired boilers and incinerators which produce effluents with high solids concentrations, is improved. High solids loading and other operational factors can cause such large temperature gradients transverse to the direction of effluent flow the SNCR cannot be practiced in conventional fashion. The process entails defining a near-wall zone having a temperature effective for SNCR and a central zone where the temperature is too high. NOx-reducing composition is introduced into the effluent within the near-wall zone in fine droplets (30 and 130) and can be introduced into the central zone after the gas has cooled or as large droplets effective to survive the high temperature.
摘要:
The present invention concerns a method for making energetic oxidizer salts and solutions thereof, and in particular relates to processes for making aqueous solutions of hydroxylammonium nitrate in high purity suitable for use in making liquid gun propellants. The present alcohol-free process yields high purity alcohol-free hydroxylammonium nitrate by neutralizing an aqueous nitric acid solution (20-70 % wt./wt.) with an alcohol-free aqueous hydroxylamine solution at temeperatures ranging from above -50 C to above ambient to produce the desired alcohol-free aqueous hydroxylammonium nitrate solution in a usable concentration and in high purity. The process is economical, environmentally acceptable, and facile.
摘要:
Method of extracting dinitrogen pentoxide (N2O5) from its mixture in nitric acid, which consists of providing a solution of the mixture in an inert organic solvent, stripping out the N2O5 from solution in a carrier gas stream containing ozone, and subsequently condensing the N2O5 out of the gas stream by contact with further inert organic solvent. The presence of ozone suppresses the dissociation of the N2O5 transferred to the gas stream into dinitrogen tetroxide (N2O4). In a preferred embodiment the stripping and absorbing steps take place continuously in adjacent stripping and absorbing columns respectively having organic solvent recirculating through each.
摘要:
A drug delivery system including a housing having a distal end with an inlet through which an inspiratory flow of air passes into the housing, a proximal end having a patient interface attached, the patient interface being configured to interface with a user, and an inspiratory flow pathway extending from the distal end to the proximal end of the housing. A nitric oxide (NO) source is positioned within the housing and is configured to deliver NO-containing gas to the patient interface. A secondary drug source is positioned within the housing and is configured to deliver a secondary drug to the patient interface. A controller is configured to control an amount of NO-containing gas and an amount of the secondary drug delivered using a control scheme.