Recovery system for oxygen from waste water oxygenation专利检索-生化需氧量水处理专利检索查询-专利查询网

Recovery system for oxygen from waste water oxygenation

阅读：585发布：2021-01-23

专利汇可以提供Recovery system for oxygen from waste water oxygenation专利检索，专利查询，专利分析的服务。并且The method of introducing substantially pure gaseous oxygen through waste water, having a high biochemical oxygen demand (BOD), in an enclosed receptacle, separating an effluent stream of gas containing oxygen mixed with nitrogen, carbon dioxide, water vapor, and other gases present in trace quantities, from the oxygenated waste water, feeding the effluent stream of gas into a pool of liquid oxygen in an enclosed receptacle and thereby solidifying carbon dioxide and water vapor, separating a stream of gas containing oxygen, nitrogen, and other gases present in trace quantities, from the liquid oxygen, cooling the gas stream to a temperature low enough to condense the oxygen, but not the nitrogen, in the said gas stream, returning the liquefied oxygen to the pool of liquid oxygen and venting the remaining gas to a disposal means, and vaporizing liquid oxygen from the pool and delivering the pure oxygen gas to the waste water in the enclosed receptacle.，下面是Recovery system for oxygen from waste water oxygenation专利的具体信息内容。

权利要求

1. THE METHOD WHICH COMPRISES: INTRODUCING SUBSTANTIALLY PURE GASEOUS OXYGEN THROUGH WASTE WATER, HAVING A HIGH BIOCHEMICAL OXYGEN DEMAND (BOD), IN A FIRST ENCLOSED RECEPTACLE, SEPARATING AN EFFLENT STREAM OF GAS CONTAINING OXYGEN MIXED WITH NITROGEN, CARBON DIOXIDE, WATER VAPOR, AND OTHER GASES PRESENT IN TRACE QUANTITIES, FROM THE OXYGENATED WASTE WATER, FEEDING THE EFFLUENT STREAM OF GAS INTO A POOL OF LIQUID OCYGEN IN A SECOND ENCLOSED RECEPTACLE AND THEREBY SOLIDIFYING THE CARBON DIOXIDE AND CONVERING THE WATER VAPOR TO ICE, SEPARATING A GAS STREAM CONTAINING OXYGEN, NITROGEN, AND OTHHER GASES PRESENT IN TRACE QUANTITIES, FROM THE LIQUID OXYGEN, COOLING THE GAS STREAM FROM THE LIQUID OXYGEN TO A TEMPERATURE LOW ENOUGH TO CONDENSE THE OXYGEN, BUT NOT THE NITROGEN, IN THE SAID GAS STREAM, SEPARATING THE CONDENSED AND LIQUEFIED OXYGEN FROM THE NITROGEN GAS, RETURNING THE LIQUIDFIED OYGEN TO THE POOL OF LIQUID OXYGEN, AND VENTING THE REMAINING GAS TO A DISPOSAL MEANS, AND VAPORIZING LIQUID OXYGEN FROM THE POOL AND DELIVERING THE PURE OXYGEN GAS TO THE WASTE WATER IN THE FIRST ENCLOSED RECEPTACLE.

2. The method of claim 1 in which the solid carbon dioxide and ice are removed from the liquid oxygen pool at least periodically.

3. The method of claim 1 in which the waste water is under a pressure of at least 30 psig when oxygenated.

4. The method of claim 1 in which the stream of gas containing oxygen and nitrogen from the liquid oxygen is cooled by passing it in direct or indirect heat exchange with a stream of cold oxygen from the liquid oxygen pool and the cold oxygen is then warmed and introduced into the waste water.

5. The method of claim 4 in which the stream of cold oxygen fed in indirect heat exchange is liquid.

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Recovery system for oxygen from waste water oxygenation

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