IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0887149
(1997-07-02)
|
|
발명자
/ 주소 |
|
| 대리인 / 주소 |
Hubbard, Jeffrey T.Kelly & Hubbard
|
| 인용정보 |
피인용 횟수 :
62 인용 특허 :
12 |
초록
▼
A selected contaminant is removed from a gas stream containing an unselected component that is also absorbed by the solvent, although to a lesser degree than the selected contaminant. In a typical application, hydrogen sulfide is removed from a natural gas stream that contains carbon dioxide as an u
A selected contaminant is removed from a gas stream containing an unselected component that is also absorbed by the solvent, although to a lesser degree than the selected contaminant. In a typical application, hydrogen sulfide is removed from a natural gas stream that contains carbon dioxide as an unselected component. The process employs a solvent absorption/regeneration sequence, carried out in an absorber and regenerator, to remove the selected contaminant (hydrogen sulfide, for example) from the gas stream. The overhead gas from the regenerator has a higher concentration of the selected contaminant than the original gas stream. This contaminant rich overhead gas stream is partially employed as a recycle stream that is combined with the original gas stream, with the resulting combined gas stream being fed to the absorber. The increased partial pressure of the selected contaminant in the absorber shifts the operating point, resulting in increased absorption of the selected contaminant relative to the unselected component. The regenerator overhead gas has a relatively high concentration of the selected contaminant.
대표청구항
▼
A selected contaminant is removed from a gas stream containing an unselected component that is also absorbed by the solvent, although to a lesser degree than the selected contaminant. In a typical application, hydrogen sulfide is removed from a natural gas stream that contains carbon dioxide as an u
A selected contaminant is removed from a gas stream containing an unselected component that is also absorbed by the solvent, although to a lesser degree than the selected contaminant. In a typical application, hydrogen sulfide is removed from a natural gas stream that contains carbon dioxide as an unselected component. The process employs a solvent absorption/regeneration sequence, carried out in an absorber and regenerator, to remove the selected contaminant (hydrogen sulfide, for example) from the gas stream. The overhead gas from the regenerator has a higher concentration of the selected contaminant than the original gas stream. This contaminant rich overhead gas stream is partially employed as a recycle stream that is combined with the original gas stream, with the resulting combined gas stream being fed to the absorber. The increased partial pressure of the selected contaminant in the absorber shifts the operating point, resulting in increased absorption of the selected contaminant relative to the unselected component. The regenerator overhead gas has a relatively high concentration of the selected contaminant. c driver and/or dialysing substance to enhance the movement of solvent and/or solute across the semi-permeable membrane in any appropriate direction. 17. A container as claimed in claim 1, wherein some or all chambers contain substances which are capable of rehydration and/or are hydroscopic and so enhance the movement of solvent and/or solute across the semi-permeable membrane in any appropriate direction, the substances preferably being in the secondary chamber(s) to concentrate the material in the primary chamber. 18. A container as claimed in claim 1, wherein the secondary chamber(s) is/are open to allow for the removal and/or rinsing and/or dilution of all or part of its contents. 19. A container as claimed in claim 1, wherein the secondary chamber(s) is/are provided with lid(s). 20. A container as claimed in claim 1, wherein one or more chamber contains chemical or physical binding agents that bind specific substances to reduce the movement of all or specific components that would normally move across the semi-permeable membrane and/or reduce their participation in subsequent chemical reactions. 21. A container as claimed in claim 1, wherein two or more chambers are placed in sequence each separated by a semi-permeable membrane which may have similar or dissimilar properties and structure. 22. A container as claimed in claim 1, wherein one or more of the chambers contains a device for indicating that a specific volume of liquid is present in any particular chamber to enable quantitative or at least semi-quantitative assays to be carried out. 23. A container as claimed in claim 1, wherein one or more of the chambers contain a specific substance that provides visible, chemical or physical evidence that there had been a breach of the integrity of the primary chamber(s). 24. A container as claimed in claim 1, including multiple layer membranes. 25. A container as claimed in claim 1, wherein solutes and/or solvent are retained in a sub-compartment of one or more of the chambers from which it is separated by a burstable septum which can be opened or broken at an appropriate time without affecting the total integrity of the whole chamber. 26. A container as claimed in claim 1, including substances that enhance the movement of solvents or solutes across the membrane and assay reagents incorporated into the structure or bound to the surface of the substances. 27. A method of sampling dangerous fraction, the sample being contained in one or more of the primary chamber(s) of a container as claimed in claim 1, the method including the step of: passing material initially present in the primary chamber(s) and having a lower molecular size than the cut-off of the membraned through the membrane; and reacting the passed material with material within the secondary chamber(s) whilst the dangerous fraction is retained within the primary chamber(s). 28. A method as claimed in claim 27, including the preliminary step of culturing living organisms in the primary chamber(s). 29. A method as claimed in claim 27, in which a disinfecting substance and/or toxic neutralising agent is added to the secondary chamber(s) and allowed to permeate through the semi-permeable membrane to the primary chamber(s). 30. A method as claimed in claim 27, wherein the secondary chamber(s) contain water absorbing substances and they are allowed to extract substantially all water from the sample. 31. A method of sampling a dangerous fraction, the sample being contained in one or more of the primary chamber(s) of a container as claimed in claim 1, the method including the step of: passing material initially present in the secondary chamber(s) and having a smaller molecular size than the cut-off of the membrane to pass through the membrane; and reacting the passed material with material within the primary chamber(s) whilst the dangerous fraction is retained within the primary chamber(s). 32. A container as claimed in claim 1, wherein at least one of the chamb
※ AI-Helper는 부적절한 답변을 할 수 있습니다.