Process for producing a gaseous product
AssigneeAir Products and Chemicals, Inc.
InventorsAnthony K. J. Topham, Rodney J. Allam
Life of this patent
Estimating the term…
Abstract
An ozone containing gas stream is produced from oxygen by subjecting oxygen to an electric discharge and the ozone is then adsorbed on to a solid adsorbent, such as zeolite, the oxygen containing stream leaving the adsorbent is recycled to the ozonising process. Periodically, oxygen adsorbed on the adsorbent is desorbed by co-currently passing a purge gas over the adsorbent and the desorbed oxygen is also recycled to the ozoniser. Lastly ozone is desorbed from the adsorbent by a counter-current flow of purge gas and used in an ozone demanding process.
Claims14
A method for the production of a gas stream containing a product gas comprising:
- a) subjecting a stream of a reactant gas to a product gas producing process to form a reactant gas and product gas containing stream;
- b) adsorbing said product gas from said reactant gas and product gas containing stream in a bed of adsorbent so as to produce a reactant gas containing and product gas depleted stream;
- c) displacing reactant gas from said bed by passing through the bed a stream of purge gas;
- d) recycling said reactant gas containing and product gas depleted stream and said displaced reactant gas into the product gas producing process;
- e) removing the product gas from said bed in a flow of said purge gas to produce said gas stream containing a product gas, thereby regenerating said adsorbent for product gas adsorption;
- and
- repeating steps (b) to (e) in a cyclic manner.
A method for the production of a gas stream containing ozone comprising:
- a) subjecting a stream of oxygen containing gas to an ozone producing process to form an oxygen and ozone containing stream;
- b) adsorbing ozone from said oxygen and ozone containing stream in a bed of adsorbent so as to produce an oxygen containing ozone depleted stream;
- c) displacing oxygen from said bed by passing through the bed a stream of nitrogen rich gas;
- d) recycling said oxygen containing ozone depleted stream and said displaced oxygen into the ozone producing process;
- e) removing ozone from said bed in a flow of nitrogen rich gas to produce said gas stream containing ozone, thereby regenerating said adsorbent for ozone adsorption and leaving said bed occupied by nitrogen rich gas;
- f) removing nitrogen left in said bed following step (e) such that said nitrogen removed from said bed is not passed into said ozone generating process;
- and
- (g) repeating steps (b) to (f) in a cyclic manner.
Dependencies are inferred from the claim text.