[특허]Systems for managing fluids in a processing environment using a liquid ring pump and reclamation system

Systems for managing fluids in a processing environment using a liquid ring pump and reclamation system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01F-005/10
출원번호	US-0114832 (2011-05-24)
등록번호	US-8317388 (2012-11-27)
발명자 / 주소	Urquhart, Karl J. Guarneri, Georges Marc, Jean-Louis Fanjat, Norbert Langellier, Laurent Colin, Christophe
출원인 / 주소	Air Liquide Electronics U.S. LP
대리인 / 주소	McQueeney, Patricia E.
인용정보	피인용 횟수 : 0 인용 특허 : 41

초록 ▼

Methods and systems for chemical management. In one embodiment, a blender is coupled to a processing system and configured to supply an appropriate solution or solutions to the system. Solutions provided by the blender are then reclaimed from the system and subsequently reintroduced for reuse. The blender may be operated to control the concentrations of various constituents in the solution prior to the solution being reintroduced to the system for reuse. Some chemicals introduced to the system may be temperature controlled. A back end vacuum pump subsystem separates gases from liquids as part of a waste management system.

대표청구항 ▼

1. A processing system, comprising: a vacuum pump system fluidly coupled to a vacuum line, the vacuum line configured to be able to receive a processing fluid removed from a processing station; wherein the vacuum pump system comprises:a liquid ring pump having a suction port fluidly coupled to the vacuum line, wherein the liquid ring pump is configured to be able to receive from the processing station a multiphase processing fluid stream; anda sealant fluid tank fluidly coupled to an exhaust port of the liquid ring pump and comprising one or more devices configured to be capable of removing liquid from a multiphase stream output by the liquid ring pump through the exhaust port;the sealant fluid tank fluidly coupled to a feed port of the liquid ring pump and configured to be capable of providing the liquid ring pump sealant fluid during operation of the liquid ring pump;a fluid reclamation system fluidly coupled to an outlet of the processing station configured to be capable of returning at least a portion of the processing fluid removed from the processing station to a point upstream from the processing station for reuse at the processing station; anda pressure control system disposed in the vacuum line upstream from the liquid ring pump, wherein the pressure control system is configured to maintain a target pressure in the vacuum line according to a desired pressure in the processing station. 2. The system of claim 1, further comprising a supply tank fluidly coupled to an inlet of the processing station, wherein the supply tank is configured to be capable of supplying the processing fluid to the processing station; and wherein the fluid reclamation system is fluidly coupled to the supply tank whereby the system is adapted to be capable of returning to the supply tank the portion of the processing fluid removed from the processing station during system operation. 3. The system of claim 1, wherein the reclamation system includes a collection tank coupled to an outlet of the processing station and adapted to be capable of collecting the processing fluid removed from the processing station during system operation; and wherein the vacuum line of the vacuum pump system is coupled to the collection tank. 4. The system of claim 1, further comprising a collection tank adapted to be capable of receiving used processing fluid from the processing station; the collection tank comprising: an inlet coupled to an outlet of the processing station;a first outlet coupled to the vacuum line; anda second outlet coupled to a fluid reclamation line of the fluid reclamation system. 5. The system of claim 1, wherein the vacuum pump system further comprises: a coolant source adapted to inject a coolant during system operation into the incoming multiphase stream prior to the incoming multiphase stream being input to the liquid ring pump at the suction port, the coolant having a temperature sufficient to condense liquid from the incoming multiphase stream. 6. The system of claim 1, wherein at least one of the one or more devices includes at least one of: a degassing baffle; andan impingement plate positioned at an inlet to the tank fluidly connected to the output of the liquid ring pump. 7. The system of claim 1, wherein at least one of the one or more devices includes a demister. 8. A system for maintaining a chemical solution at desired concentrations, the system comprising: a blender unit configured to receive and blend at least two chemical compounds to form a solution comprising a mixture of the compounds at selected concentration ranges;at least one processing station having an inlet fluidly coupled to the blender and configured to perform a wet process on an article using solution mixed by the blender;a vacuum pump system fluidly coupled to at least one outlet of the processing station via a vacuum line; the vacuum pump system, comprising: a liquid ring pump having a suction port coupled to the vacuum line and configured to be capable of receiving an incoming multiphase stream formed from one or more fluids removed from the processing station via the outlet; anda sealant fluid tank coupled to an exhaust port of the liquid ring pump and comprising one or more devices configured to be capable of removing liquid from a multiphase stream output by the liquid ring pump through the exhaust port;the sealant fluid tank coupled to a feed port of the liquid ring pump and configured to be capable of providing the liquid ring pump sealant fluid needed during operation of the liquid ring pump;a fluid reclamation system fluidly coupled to an outlet of the processing station configured to be capable of returning solution removed from the processing station to the a point upstream from the processing station; anda pressure control system disposed in the vacuum line upstream from the liquid ring pump, wherein the pressure control system is configured to maintain a target pressure in the vacuum line according to a desired pressure in the processing station. 9. The system of claim 1, wherein the pressure control system includes a pressure transmitter and a pressure regulator. 10. The system of claim 8, further comprising a supply tank fluidly coupled to an inlet of the processing station and configured to be capable of supplying the processing fluid to the processing station; wherein the fluid reclamation system is fluidly coupled to the supply tank and adapted to be capable of returning the portion of the processing fluid removed from the processing station to the supply tank. 11. The system of claim 8, wherein the blender unit is configured to mix a first chemical solution for delivery to a first supply tank fluidly coupled to the processing station and mix a second chemical solution for delivery to a second supply tank fluidly coupled to another processing station, fluidly and further comprising a flow control device operable to place the blender unit selective communication with the first and second supply tanks. 12. The system of claim 8, wherein the blender unit comprises a concentration monitoring system configured to be capable of monitoring the concentration of the at least one of the compounds in the solution and adding an amount of one or more fluids to the blender unit until the monitored concentration is within the selected concentration range. 13. The system of claim 8, wherein the processing station is located in a chamber of a semiconductor tool. 14. The system of claim 8, wherein the point upstream is an inlet of the blender unit. 15. The system of claim 8, wherein the pressure control system includes a pressure transmitter and a pressure regulator.

이 특허에 인용된 특허 (41)

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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Systems for managing fluids in a processing environment using a liquid ring pump and reclamation system 원문보기

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Systems for managing fluids in a processing environment using a liquid ring pump and reclamation system 원문보기

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