Abstract:
The object of the invention is a method for conducting a chemical reaction involving the powder catalyst, in particular ferromagnetic catalyst. The method is characterized in that while conducting a chemical reaction, particles of the catalyst comprising a ferromagnetic material are put into oscillation by the oscillating magnetic field with a frequency greater than 0.1 Hz and a magnetic field induction greater than 0.01 mT. Oscillating magnetic field here is a field the induction vector of which changes its direction in time. Putting catalyst particles into oscillation increases the efficiency of the chemical reaction by several dozen to several hundred percent.
Abstract:
Die vorliegende Erfindung beschreibt ein Verfahren zur Abtrennung von Ammoniak aus alkoholischer Lösung in Gegenwart von Kohlensäureverbindungen unter Vermeidung von Belagsbildung indem die zu trennende Lösung im oberen Teil einer Destillationskolonne aufgegeben wird und die Temperatur an der Aufgabestelle so eingestellt wird, dass die Löslichkeit der Ammoniumsalze der betreffenden Kohlensäureverbindung im betreffenden am Kopf der Destillationskolonne unter den Betriebsbedingungen gegeben ist.
Abstract:
A hydrogen cyanide production process that recovers ammonia and hydrogen cyanide from a crude hydrogen cyanide product comprising from 25 to 50 vol.% water. When heat is recovered from the ammonia stripper, in the form of low pressure steam, and the steam can be integrated with the refining of hydrogen cyanide.
Abstract:
A system and method for processing biomass into hydrocarbon fuels that includes processing a biomass in a hydropyrolysis reactor resulting in hydrocarbon fuels and a process vapor stream and cooling the process vapor stream to a condensation temperature resulting in an aqueous stream. The aqueous stream is sent to a catalytic reactor where it is oxidized to obtain a product stream containing ammonia and ammonium sulfate. A resulting cooled product vapor stream includes non-condensable process vapors comprising H 2 , CH 4 , CO, C0 2 , ammonia and hydrogen sulfide.
Abstract:
The invention relates to a method and plant for obtaining ammonia from an acidic gas mixture comprising ammonia, H2S and/or CO2 and low boiling water soluble organic components. In order to avoid an enrichment of volatile organic compounds in the acidic gas absorber, a partial stream of the liquid phase from an acidic gas absorber is extracted and worked up such that gaseous ammonia with a reduced content of volatile organic compounds is obtained which is recycled to the acidic gas absorber.
Abstract:
The present invention relates to a process for the recovery of ammonia contained in a gaseous stream, said process comprising the following phases: (a) subjecting the gaseous stream containing ammonia to a washing with an aqueous washing solution having a pH lower than 7.0, with the formation of a purified gaseous stream and an aqueous solution containing an ammonium salt; (b) treating the aqueous solution containing the ammonium salt coming from phase (a) in a vertical falling film heat exchanger at a temperature from 50 to 250°C and an absolute pressure ranging from 50 KPa to 4 MPa with the formation of a regenerated washing solution and a gaseous stream comprising NH 3 and H 2 O; (c) recycling said regenerated washing solution to phase (a). The present invention also relates to equipment for effecting the above process.
Abstract:
A process for the recovery of unreacted ammonia from the effluent from a reaction zone used to produce acrylonitrile or methacrylonitrile comprising quenching the reactor effluent with an aqueous solution of ammonium phosphate in at least two stages, thereby capturing the ammonia component of the effluent. The captured ammonia may be recovered by heating the aqueous ammonium phosphate, which then may be recycled. Contaminants present in the aqueous ammonium phosphate may be removed, for example by solvent extraction or wet oxidation, prior to recycle.
Abstract:
A process and apparatus for the decontamination of gaseous contaminants (especially oxygen, carbon dioxide and water vapor) from hybride gases (including their lower alkyl analogs) down to /= 100 m /g, and preferably 200-800 m /g. Oxides of various metals, especially manganese or molibdenum, can be used, and mixtures of integrated oxides, or one type of oxide coated on another, may be used. The substrate is preferably retained in a hydride-gas-resistant container which is installed in a gas supply line, such as to a gas- or vapor-deposition manufacturing unit. The invention provides final decontamination for hydride gas streams intended for gas-or vapor-deposition formation of high purity LED, laser (especially blue laser), electronic, optical or similar products, and can be used in combination with upstream preliminary decontamination process and/or upstream or downstream solid particulate removal units.
Abstract:
Ammonia is removed from synthesis gas, or other gaseous solvents by utilizing a sorbent to remove the ammonia followed by an in situ regeneration of the sorbent and recovery of the ammonia. The ammonia is sorbed onto the bed of sorbent, thereby producing a purified gaseous solvent. Regeneration is achieved by using at least a portion of the gaseous solvent which is then acted upon to increase its solvent capacity for the ammonia and passed through the sorbent in the opposite direction to desorb the ammonia from the sorbent to provide an increased solvent capacity gaseous solvent. The ammonia is then recovered from the increased solvent capacity gaseous solvent.