Control system for helium recovery
AssigneePraxair Technology, Inc.
InventorsMohamed Safdar Allie Baksh, Scot Eric Jaynes, Bernard Thomas Neu, James Smolarek, Mark Thomas Emley
Life of this patent
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Abstract
The present invention relates to a gas recycling system that includes a) a source of gas having a predetermined purity; b) an application system that uses the gas and adds contaminants to the gas; c) an adsorption system for removing the contaminants from the gas to produce a purified gas and a waste gas; d) a gas purity analyzer for measuring the amount of the contaminants in the waste gas; and e) conduits connecting the gas source to the application system, and the application system to the adsorption system.
Claims17
A gas recycling system comprising:
- a) a source of gas having a predetermined purity (28);
- b) an application system (6) that uses said gas and adds contaminants to said gas;
- c) an adsorption system (1) for removing said contaminants from said gas to produce a purified gas and a waste gas;
- d) a gas purity analyzer (100) for measuring the amount of said contaminants in said waste gas;
- e) conduits (5), (8), (9), (13) and (15) connecting the gas source (4) to said application system and said application system (6) to said adsorption system;
- f) a membrane (24) connected to said adsorption system (1), such that said waste gas is passed through said membrane (24) to produce a gas having reduced amounts of contaminants and a gas having a higher concentration of contaminants;
- and
- g) conduits (25) for feeding said gas having reduced contaminants to said adsorption system (1).
A gas recycling system comprising:
- a) a source of gas having a predetermined purity (28);
- b) an application system (6) that uses said gas and adds contaminants to said gas;
- c) an adsorption system (1) for removing said contaminants from said gas to produce a purified gas and a waste gas;
- d) a gas purity analyzer (100) for measuring the amount of said contaminants in said waste gas;
- e) conduits (5), (8), (9), (13) and (15) connecting the gas source (4) to said application system, and said application system (6) to said adsorption system;
- and
- f) a second gas purity analyzer (250) that measures the purity of said purified gas.
A gas recycling system comprising:
- a) a source of gas having a predetermined purity (28);
- b) an application system (6) that uses said gas and adds contaminants to said gas;
- c) an adsorption system (1) for removing said contaminants from said gas to produce a purified gas and a waste gas;
- d) a gas purity analyzer (100) for measuring the amount of said contaminants in said waste gas;
- e) conduits (5), (8), (9), (13) and (15) connecting the gas source (4) to said application system, and said application system (6) to said adsorption system;
- and
- f) a third gas purity analyzer (300) that measures the purity of the contaminated gas from said application system (6).
A process for purifying and recycling a gas, said process comprising:
- a) providing a source of gas having a predetermined purity;
- b) providing said gas to an application system that uses said gas and adds contaminants to said gas;
- c) passing the contaminated gas to an adsorption system (1)for removing said contaminants from said gas to produce a purified gas, and a waste gas,
- d) measuring the amount of said contaminants in said waste gas;
- e) venting said waste gas outside said system upon a signal from a gas purity analyzer (100);
- f) passing said waste gas through a membrane (24) to produce a gas having reduced amounts of contaminants and a gas having a higher concentration of contaminants;
- and
- g) passing said gas having reduced contaminants to said adsorption system (1).
A process for purifying and recycling a gas, said process comprising:
- a) providing a source of gas having a predetermined purity;
- b) providing said gas to an application system that uses said gas and adds contaminants to said gas;
- c) passing the contaminated gas to an adsorption system (1)for removing said contaminants from said gas to produce a purified gas and a waste gas;
- d) measuring the amount of said contaminants in said waste gas;
- e) venting said waste gas outside said system upon a signal from a gas purity analyzer (100);
- and
- f) adding additional gas from said source of gas (28) having a predetermined purity to said gas having reduced contaminants in order to compensate for the vented waste gas.
Dependencies are inferred from the claim text.