摘要:
The present disclosure provides a process for removing metal contaminants from a contaminated fluid stream comprising the step of contacting said fluid stream with macroporous alpha alumina to obtain a fluid stream containing less than 50 ppm of metal. The fluid stream can be selected from the group consisting of a stream of mineral acid(s) and a stream of alkylene(s); and the metal contaminant can be at least one of elemental metals and metal oxides. The process further comprises a step of obtaining spent macroporous alpha alumina and regenerating active macroporous alpha alumina therefrom by washing said spent macroporous alpha alumina with at least one purified stream selected from the group consisting of a stream of mineral acid(s) and a stream of alkylene(s).
摘要:
Processes of and systems for removing free bromine from gaseous anhydrous HBr contaminated with free bromine are described. In one type of process the gaseous contaminated HBr is fed into countercurrent contact with at least one liquid alkylaromatic hydrocarbon within a packed section of a column while maintaining the packed section under free radical bromination conditions so that one or more than one liquid a-bromoalkylaromatic compound is produced along with one mole of gaseous HBr per mole of a-bromoalkylaromatic compound produced. In another type of process the gaseous anhydrous HBr is fed into countercurrent contact through at least two scrubbers so that the gaseous anhydrous HBr is scrubbed substantially free of bromine by passage through these at least two scrubbers, each of which contains a different specified type of scrubbing liquid. In one embodiment the liquid alkylaromatic hydrocarbon comprises 1,2-diphenylethane.
摘要:
A method for the synthesis of anhydrous hydrogen halide fluids from organic halide fluids, such as perfluorocarbon fluids and refrigerant fluids, and anhydrous carbon dioxide for the environmentally safe disposition thereof.
摘要:
An apparatus for the synthesis of anhydrous hydrogen halide fluids from organic halide fluids, such as perfluorocarbon fluids and refrigerant fluids, and anhydrous carbon dioxide for the environmentally safe disposition thereof.
摘要:
A process for converting gaseous alkanes to olefins, higher molecular weight hydrocarbons or mixtures thereof wherein a gaseous feed containing alkanes may be thermally or catalytically reacted with a dry bromine vapor to form alkyl bromides and hydrogen bromide. Poly-brominated alkanes present in the alkyl bromides may be further reacted with methane over a suitable catalyst to form mono-brominated species. The mixture of alkyl bromides and hydrogen bromide may then be reacted over a suitable catalyst at a temperature sufficient to form olefins, higher molecular weight hydrocarbons or mixtures thereof and hydrogen bromide. Various methods and reactions are disclosed to remove the hydrogen bromide from the higher molecular weight hydrocarbons, to generate bromine from the hydrogen bromide for use in the process, to store and subsequently release bromine for use in the process, and to selectively form mono-brominated alkanes in the bromination step. One or more of the reactions of the processes of the present invention may be conducted in a microchannel reactor.
摘要:
To provide a sustainable method for the synthesis of ammonia from nitrogen by low resources and low energy. The present invention is a method for the synthesis of ammonia by a thermochemical cycle, which uses nitrogen and water as raw materials and uses renewable energy as an energy source. Ammonia is synthesized without auxiliary raw materials by a step of obtaining ammonia by a reaction of nitrogen and a halogenated hydrogen by way of a halogenated ammonium as a cycle that proceeds in a thermodynamic manner, and a step of recycling the byproduced halogen.
摘要:
The present invention provides a method for separating HBr from HBr-containing hydrocarbons (alkenes, aromatics and/or alkanes) to purify the hydrocarbons. Reacting a silica supported metal oxide solid material (MO x /SiO 2 , MO x =MgO, CoO, Co 2 O 3 , CuO and mixture thereof) with HBr in HBr-containing hydrocarbons, so as to ensure that the concentration of HBr is reduced to below 1.87×10 -16 , and then oxidizing the solid material which reacted with HBr in oxygen or air to regenerate MO x /SiO 2 , meanwhile Br 2 is recycled. Therefore, the purpose of continuous purification of hydrocarbons can be achieved.
摘要翻译:本发明提供了将HBr与含HBr的烃(烯烃,芳烃和/或烷烃)分离以净化烃的方法。 在含HBr的烃中与HBr反应二氧化硅负载的金属氧化物固体材料(MO x / SiO 2,MO x = MgO,CoO,Co 2 O 3,CuO及其混合物),以确保HBr的浓度为 降低至1.87×10 -16以下,然后氧化与氧气或空气中的HBr反应的固体物质再生MO x / SiO 2,同时将Br 2回收利用。 因此,可以实现连续净化烃的目的。