Oxygen storage and generation using an oxygen generating liquid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01B-013/02
A62B-021/00
출원번호
US-0495673
(2012-06-13)
등록번호
US-9090466
(2015-07-28)
발명자
/ 주소
Presley, Kenneth Lee
Meyers, Scott Clarence
출원인 / 주소
API Engineering, LLC
대리인 / 주소
Lathrop & Gage LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
Provided are methods and devices for storing and generating oxygen from a low temperature oxygen generating liquid. The oxygen storage method may use lithium chlorate plus water to store oxygen wherein all solids that may be present enter solution for delivery as a liquid to a reaction vessel. The o
Provided are methods and devices for storing and generating oxygen from a low temperature oxygen generating liquid. The oxygen storage method may use lithium chlorate plus water to store oxygen wherein all solids that may be present enter solution for delivery as a liquid to a reaction vessel. The oxygen production method may be a batch process with steps to heat the liquid, boil out the water, thermally decompose the lithium chlorate and then rinse out the remaining product. The apparatus for oxygen generation may use multiple reaction vessels operating sequentially to produce a continuous flow of oxygen with a rinse step in a separate area from the heat application area to remove end product solid. The device for oxygen storage includes a storage vessel and is configured to heat the oxygen generating liquid using waste heat present in the rinse liquid.
대표청구항▼
1. A method for generating free oxygen from an oxygen generating liquid, said method comprising the steps of: introducing an oxygen generating liquid into a vessel, wherein the oxygen generating liquid comprises a high concentration lithium chlorate aqueous solution;heating the vessel to boil water
1. A method for generating free oxygen from an oxygen generating liquid, said method comprising the steps of: introducing an oxygen generating liquid into a vessel, wherein the oxygen generating liquid comprises a high concentration lithium chlorate aqueous solution;heating the vessel to boil water out of said oxygen generating liquid and said vessel, wherein lithium chlorate remains in said vessel;further heating said lithium chlorate in said vessel to a decomposition temperature sufficient to thermally decompose said lithium chlorate to generate free oxygen and lithium chloride product from said lithium chlorate, wherein said lithium chloride product remains in said vessel; andrinsing said lithium chloride solid from the vessel with a rinse liquid to prepare the vessel for another introduction of oxygen containing liquid. 2. The method of claim 1, wherein the further heating is to a temperature that is greater than or equal to 385° C. 3. The method of claim 1, further comprising sequentially repeating each of the steps to generate oxygen at an average flow rate over a time period. 4. The method of claim 1, wherein the method is a batch method having a periodic generation of oxygen and a periodic portion without substantial oxygen generation. 5. The method of claim 4, wherein multiple vessels are operated sequentially to produce an average flow rate of total generated oxygen equal to the number of vessels times an average flow of generated oxygen from each vessel. 6. The method of claim 5, having a user-selected maximum generated oxygen average flow (Q), and system parameters M, N, and T are selected according to the formula: Q=0.531×M×(N/T);wherein: M is the mass of lithium chlorate contained in the oxygen generating liquid introduced to the vessel;N is the number of reaction vessels in sequential operation; andT is time for a vessel to complete a full cycle;each of M, N and T are independently selectable to obtain said user-selected maximum generated oxygen. 7. The method of claim 4, wherein said periodically generated oxygen is stored in a plenum from which oxygen can be provided, and said generated oxygen is provided on-demand from said plenum at a user-selected oxygen flow-rate for use in a downstream application. 8. The method of claim 1, wherein the rinsing step comprises: introducing a rinse liquid that is water-based to said vessel; andremoving said rinse liquid from said vessel, wherein substantially all of said lithium chloride solid product and rinse liquid is removed from said vessel, and said water-based rinse liquid optionally comprises lithium chloride product. 9. The method of claim 8, wherein a portion of lithium chloride solid product remains in the vessel after rinsing and is a catalyst for subsequently introduced lithium chlorate solution for generating free oxygen, and said catalyst decreases said decomposition temperature by up to 60° C. compared to decomposition temperature without catalyst. 10. The method of claim 1, wherein residual heat from the thermal decomposition of lithium chlorate is used to preheat the oxygen generating liquid, the rinse liquid, or both the oxygen generating liquid and the rinse liquid. 11. The method of claim 10, wherein said residual heat is from one or more of the: oxygen and steam released during the heating;reaction vessel and the solid lithium chloride product generated from the heating and decomposition steps; orrinse liquid collected after said rinsing step. 12. The method of claim 11, wherein said rinse liquid collected after said rinsing step is returned to a container in thermal contact with a storage vessel that holds said oxygen-generating liquid to be introduced to said vessel, wherein said storage vessel and said vessel that holds said oxygen-containing liquid are separated from each other by a movable separator capable of heat transfer. 13. The method of claim 1, further comprising the step of cooling the lithium chloride product in said vessel so that said lithium chloride product remains in the vessel in solid form, wherein the cooling step comprises cooling said vessel and lithium chloride left in the vessel after decomposition to a cooling temperature that is less than or equal to the melting point of lithium chloride, or less than or equal to 610° C. 14. The method of claim 1, wherein an average rate of oxygen generation from said vessel is controlled by: varying the amount of oxygen generating liquid introduced to the vessel;varying the rate of heat application; orboth. 15. The method of claim 1, wherein the generated free oxygen is used in an application selected from the group consisting of: power producing combustion system;fuel cell; andhuman consumption. 16. The method of claim 1, further comprising the step of cooling said generated free oxygen thereby reducing said free oxygen temperature and humidity. 17. The method of claim 1, further comprising the step of controlling a flow of generated free oxygen by monitoring a pressure in a plenum that stores said generated free oxygen.
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이 특허에 인용된 특허 (6)
Kolbe Ernst G. (Mlln DEX) Ernst Rainer (Curau DEX) Fiedler Hans-Burkhardt (Neustadt DEX), Chemical oxygen generator.
Peters Jonathan A. (State College PA) Klanchar Martin (State College PA) Hughes Thomas G. (State College PA) Mankin James C. (Port Matilda PA), Oxygen storage and retrieval system.
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