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OwnerJohn David Scott, Charles Brian Blake +5inventors
InventorsJohn David Scott, Charles Brian Blake, Paul Nicholas Ewing, Jeremy Charles Bauser Hunns, Steven Toplis, Andrew Neil Irwin, Mark Spruce
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Prior to carrying out a gaseous phase chemical reaction, a liquid phase organic compound which is prone to degrade is vaporised at elevated pressures with the aid of a second compound. In one embodiment of the invention, vaporisation is effected by co-vaporising a mixture of the two compounds in a vaporiser. In another embodiment, the first compound is injected into a hot gaseous stream and undergoes atomisation into droplets which then vaporise within the gaseous stream. The second compound is used to assist the atomisation process and/or to sweep atomised droplets of the first compound away from hot surfaces where the first compound would otherwise tend to undergo degradation if the droplets are allowed to reside in contact with such surfaces.
A process for carrying out a chemical reaction involving a first organic compound which has been vaporised from the liquid phase under conditions which render the liquid phase form of the pure compound prone to degrade, characterised in that vaporisation of said first compound from the liquid phase is effected using a second compound in such a way as to suppress degradation of said first compound.
A process for carrying out a chemical reaction at elevated pressure, comprising vaporising under elevated pressure conditions a liquid phase organic compound which is prone to degrade when vaporised under such conditions, and reacting the vaporised compound with at least one other reactant in the gaseous phase under conditions which permit the reaction to proceed, characterised by modifying the boiling characteristics of the organic compound such that vaporisation can be effected at reduced temperature thereby preventing or substantially reducing the production of degradation products.
A process as claimed in any one of the preceding claims in which the organic compound comprises a halocarbon.
A process for carrying out a chemical reaction involving a halocarbon in its vapour phase, in which prior to the reaction the halocarbon is vaporised under elevated pressure conditions at which the boiling point of the compound per se is such that vaporisation of the compound Per se is accompanied by degradation of the compound if vaporised at that boiling point, characterised in that the halocarbon is co-vaporised in admixture with hydrogen fluoride whereby the boiling temperature of the halocarbon compound/HF mixture is such that vaporisation is accompanied by substantially less degradation of the halocarbon compound.
A process for effecting fluorination of a chlorocarbon compound at elevated pressure, comprising vaporising the compound under elevated pressure conditions at which the boiling point of the compound per se is such that vaporisation of the compound per se is accompanied by degradation of the compound if vaporised at that boiling point, and reacting the vaporised compound with a fluorinating agent in the gaseous phase under conditions with permit the reaction to proceed, characterised by the selection of hydrogen fluoride as the fluorinating agent and effecting vaporisation of the chlorocarbon by co-vaporising a mixture of the chlorocarbon compound with hydrogen fluoride whereby the boiling temperature of the chlorocarbon compound/HF mixture is such that vaporisation thereof is accompanied by substantially less degradation of the chlorocarbon compound.
Apparatus for effecting vaporisation of a liquid organic compound at elevated pressures at which the organic compound is prone to degrade if vaporised at its boiling temperature at such elevated pressure, said apparatus comprising:
A process for introducing a first organic compound into a conduit through which a hot gaseous stream flows under elevated pressure conditions at variable flow rates, the compound being one which is prone to degrade if allowed to reside in contact with the hot wall or walls of the conduit, said process comprising:
A chemical process involving contact between a hot gaseous stream and an organic compound which, when in the liquid phase, is prone to degrade if allowed to reside in contact with a hot surface at or above a predetermined temperature, said process comprising:
A liquid injection device for the introduction of liquid phase organic compounds into a process gas stream, comprising:
A liquid injection device for the introduction of liquid phase organic compounds into a process gas stream, comprising:
A liquid injection device for the introduction of liquid chase organic compounds into a process gas stream comprising:
Dependencies are inferred from the claim text.