[특허]Method and system for removing hydrogen sulfide from sour oil and sour water

Anschutz Exploration Corporation

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특허 상세정보

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Method and system for removing hydrogen sulfide from sour oil and sour water

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10G-031/08 B01D-019/00 C02F-001/20 C10G-021/16 C10G-021/30 C02F-101/10
미국특허분류(USC)	208/208R;
출원번호	US-0185006 (2014-02-20)
등록번호	US-9028679 (2015-05-12)
발명자 / 주소	Morris, Jeff Blair
출원인 / 주소	Anschutz Exploration Corporation
대리인 / 주소	Sheridan Ross P.C.
인용정보	피인용 횟수 : 4 인용 특허 : 217

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Embodiments of the present invention are generally related to a system and method to remove hydrogen sulfide from sour water and sour oil. In particular, hydrogen sulfide is removed from sour water and sour oil without the need for special chemicals, such as catalyst chemicals, scavenger chemicals, hydrocarbon sources, or a large scale facility. The system and method in the present invention is particularly useful in exploratory oil and gas fields, where large facilities to remove hydrogen sulfide may be inaccessible. The present invention addresses the ...

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1. A method for removing hydrogen sulfide from crude oil and water comprising: filling a first storage device with water;filling a second storage device with crude oil and water in an equalized amount, wherein the crude oil comprises hydrogen sulfide;distributing air from a device that can create airflow to said first storage device, using a first connection running from said device creating airflow to said first storage device, wherein the terminal end of said first connection comprises at least one opening;transferring air from vapor space located within said first storage device through an enclosed connection to a separate compartment, wherein the separate compartment is capable of mixing air;distributing air from said device that can create airflow to said separate compartment, using a second connection running from said device that can create airflow to said separate air mixing compartment;measuring the amount of hydrogen sulfide in said separate air storage compartment;releasing air from said air storage compartment when the amount of hydrogen sulfide measured is below a desired amount;distributing water from said first storage device to said second storage device via a pumping means, wherein the water from said first storage device enters said second storage device through the top of said second storage device;measuring the amount of hydrogen sulfide in the crude oil within said second storage device;continuing to distribute water from said first storage device to said second storage device until the amount of hydrogen sulfide in the crude oil in said second storage device is below a desired amount;returning water from said second storage device to said first storage device;continuing to distribute air from said device that can create airflow to said first storage device;continuing to transfer air from said vapor space from said first storage device to said separate air mixing compartment; andcontinuing to measure the amount of hydrogen sulfide in said separate air mixing compartment, wherein air is released from said separate air mixing compartment when the amount of hydrogen sulfide measured is below a desired amount, and wherein said method is devoid of any chemical catalysts or chemical scavengers being employed to remove hydrogen sulfide. 2. The method of claim 1 wherein the first storage device is filled with water comprising hydrogen sulfide. 3. A method for removing hydrogen sulfide from crude oil without the use of catalysts or chemical scavengers comprising: a) providing a first container adapted to hold crude oil, said first container having an inlet and an outlet;b) providing a desired amount of crude oil into said first container at an atmospheric pressure, said crude oil having a first concentration of hydrogen sulfide;c) contacting the crude oil inside said first container with water entering said first container through said inlet, the water having a first amount of hydrogen sulfide; andd) transferring water out of said first container through said outlet to generate a stream of water, said stream of water having more hydrogen sulfide than said water entering said first container;e) providing a second container adapted to hold water, wherein said second container further comprises a first inlet, a first outlet, and a second outlet;f) filling said second container with water to a level sufficient to provide a vapor space at a top surface of the water through said first inlet with water from said outlet of said first container;g) bubbling air into the water inside said second container;h) transferring hydrogen sulfide from said vapor space through said first outlet in said second container to form a hydrogen sulfide gas containing stream;i) providing air to said hydrogen sulfide gas containing stream to generate a second diluted hydrogen sulfide gas containing stream; andj) transferring water from said second container through said second outlet and into the inlet of said first container; wherein said method is devoid of any chemical catalysts or chemical scavengers being employed to remove hydrogen sulfide. 4. The method of claim 3 wherein after said transferring step, the crude oil in said first container has a reduced concentration of hydrogen sulfide as compared to said first concentration. 5. The method of claim 3 further comprising maintaining the pH of said water at 7.0 or below. 6. The method of claim 3 further comprising performing said method at a temperature of at least 45 degrees Fahrenheit. 7. The method of claim 3 further comprising measuring the amount of hydrogen sulfide present in said crude oil after said contacting step c). 8. The method of claim 3 where the contacting step c) is performed at a rate from 20 gallons per minute to 126 gallons per minute. 9. The method of claim 3 further comprising repeating step c) until the amount of hydrogen sulfide in said crude oil is reduced to an amount below 100 parts per million. 10. The method of claim 3 further comprising releasing into the ambient environment the second diluted hydrogen sulfide gas containing stream when the concentration of hydrogen sulfide present in said second diluted hydrogen gas containing stream is below a predetermined level. 11. The method of claim 3 wherein step j) of transferring is conducted at a rate from 20 gallons per minute to 126 gallons per minute. 12. The method of claim 3 wherein step g) of bubbling is conducted at a rate of at least 105 standard cubic feet per minute. 13. The method of claim 3 wherein contacting said crude oil with water further comprises agitating said crude oil. 14. The method of claim 3 further comprising measuring the concentration of hydrogen sulfide present in the second diluted hydrogen sulfide gas containing stream and releasing into the ambient environment the second diluted hydrogen sulfide gas containing stream when the concentration of hydrogen sulfide is measured below a predetermined level. 15. The method of claim 3 further comprising repeating steps c-j until the concentration of hydrogen sulfide in said crude oil is reduced to 100 parts per million or below. 16. The method of claim 15 further comprising repeating steps h-i until the concentration of hydrogen sulfide present in said second diluted hydrogen sulfide containing stream is below a predetermined level. 17. The method of claim 16 further comprising maintaining the pH of said water at 7.0 or below. 18. The method of claim 17 further comprising performing said method at a temperature of at least 45 degrees Fahrenheit. 19. A method for removing hydrogen sulfide from crude oil and water comprising: a) providing a first container adapted to hold water, said first container comprising an aperture, an inlet, and an outlet;b) providing said first container with water sufficient to provide a vapor space between a top surface of the water and said aperture, wherein said water has a pH of 7.0 or below;c) providing a second container, said second container adapted to hold crude oil, and having an inlet and an outlet and having an atmospheric pressure;d) providing said second container with an amount of sour crude oil, wherein said sour crude oil has not been treated by a treatment selected from the group consisting of: hydrotreatment, chemical scavenger treatment, and chemical catalyst treatment;e) bubbling air through the water contained within said first container to produce a first mixed air faction in said vapor space;f) transferring said first mixed air faction from said first vapor space through said aperture to a mixing air station to produce a second mixed air faction;g) providing air to said mixing air station;h) releasing air from said mixing air station when the concentration of hydrogen sulfide present in said second mixed air faction is below a predetermined amount;i) conveying water from said first container to said second container at a rate from 20 gallons per minute to 126 gallons per minute, whereby said water strips hydrogen sulfide from said crude oil as the water contacts said crude oil, generating a stream of sour water;j) conveying said sour water through said outlet of said second container and into said first container;k) repeating step i) until the amount of hydrogen sulfide in said sour crude oil is reduced to a predetermined level; andl) repeating steps e-h until the concentration of hydrogen sulfide from the water conveyed to said first container is reduced to a predetermined level. 20. A method for removing hydrogen sulfide from crude oil and water comprising: filling a first storage device with water;filling a second storage device with crude oil and water in an equalized amount, wherein the crude oil comprises hydrogen sulfide;distributing air from a device that can create airflow to said first storage device, using a first connection running from said device creating airflow to said first storage device, wherein the terminal end of said first connection comprises at least one opening;transferring air from vapor space located within said first storage device through an enclosed connection to a separate compartment, wherein the separate compartment is capable of mixing air;distributing air from said device that can create airflow to said separate compartment, using a second connection running from said device that can create airflow to said separate air mixing compartment;measuring the amount of hydrogen sulfide in said separate air storage compartment;releasing air from said air storage compartment when the amount of hydrogen sulfide measured is below a desired amount;distributing water from said first storage device to said second storage device via a pumping means, wherein the water from said first storage device enters said second storage device through the top of said second storage device;measuring the amount of hydrogen sulfide in the crude oil within said second storage device;continuing to distribute water from said first storage device to said second storage device until the amount of hydrogen sulfide in the crude oil in said second storage device is below a desired amount;returning water from said second storage device to said first storage device;continuing to distribute air from said device that can create airflow to said first storage device;continuing to transfer air from said vapor space from said first storage device to said separate air mixing compartment; andcontinuing to measure the amount of hydrogen sulfide in said separate air mixing compartment, wherein air is released from said separate air mixing compartment when the amount of hydrogen sulfide measured is below a desired amount. 21. The method of claim 20 wherein the water is fresh water. 22. The method of claim 1 wherein the water is fresh water.

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Method and system for removing hydrogen sulfide from sour oil and sour water

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