[특허]Process for purifying processing fluids

[미국특허] Process for purifying processing fluids 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-001/22 B01D-003/06 B01D-003/10 B01D-001/28 B01D-053/14
출원번호	US-0504313 (2010-11-02)
등록번호	US-9486715 (2016-11-08)
국제출원번호	PCT/US2010/055132 (2010-11-02)
§371/§102 date	20120613 (20120613)
국제공개번호	WO2011/053983 (2011-05-05)
발명자 / 주소	Millard, Michael G.
출원인 / 주소	ORG Chem Group, LLC
대리인 / 주소	Bushman Werner, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 18

초록 ▼

A closed loop process for recovering purified processing fluid from contaminated processing fluid. The contaminated processing fluid is subjected to a first separation step, and there is recovered a first stream comprising the bulk of the processing fluid substantially free of contaminants, and a second stream containing processing fluid with concentrated levels of contaminants. The second stream is subjected to a second separation zone to produce a third stream comprising purified processing fluid and a fourth stream comprising contaminants.

대표청구항 ▼

1. A process for purifying a processing fluid comprising: providing a feed stream having a pH of from about 8 to about 11 comprising used processing fluid, low boiling components, and contaminants, said used processing fluid comprising at least one alkanol amine;introducing said feed stream into a first separation zone comprising a vacuum flashing vessel wherein said feed stream is at least partially vapourized to produce a first vapour stream comprising substantially contaminant-free processing fluid and low boiling components, and a second stream comprising processing fluid and contaminants; andreturning a first portion of said second stream to said first separation zone;introducing a second portion of said second stream to a second separation zone wherein said second portion of said second stream is at least partially vapourized to produce a third stream comprising substantially contaminant-free processing fluid and a fourth stream comprising contaminants removed from said feed stream, wherein said second portion of said second stream is about 10-30% by volume of the feed stream introduced into the first separation zone. 2. The process of claim 1, wherein said second separation zone comprises wiped film evaporation. 3. The process of claim 1, wherein the temperature in said first separation zone is from about 250° to 350° F. 4. This process of claim 1, wherein the pressure in said first separation zone is from about 30 to about 500 mm Hg. 5. The process of claim 1, wherein the temperature in said second separation zone is from about 300° to about 400° F. 6. The process of claim 1, wherein the pressure in said second separation zone is less than about 25 mm Hg. 7. The process of claim 1, wherein low boiling components present in the first vapour stream are compressed and recovered. 8. A process for purifying a processing fluid comprising: providing a feed stream comprising used processing fluid, low boiling components, and contaminants, said processing fluid comprising at least one alkanol amine;introducing said feed stream into a first separation zone comprising a vacuum flashing vessel wherein said feed stream is at least partially vapourized to produce a first vapour stream comprising substantially contaminant-free processing fluid and low boiling components, and a second stream comprising processing fluid and contaminants; andreturning a first portion of said second stream to said first separation zone; introducing a second portion of said second stream to a second separation zone wherein said second portion of said second stream is at least partially vapourized to produce a third stream comprising substantially contaminant-free processing fluid and a fourth stream comprising contaminants removed from said feed stream, wherein said second portion of said second stream is about 10-30% by volume of the feed stream introduced into the first separation zone.

이 특허에 인용된 특허 (18) 인용/피인용 타임라인 분석

Guth Hans (Berg. Neukirchen DT) Kaiser Hans-Joachim (Leverkusen DT) Kleine-Weischede Klaus (Leverkusen DT) Wieschen Hermann (Cologne DT) Kuhnlein Hans L. (Fullinsdorf CH), Concentration and separation of corrosive liquid mixtures.
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Endre Markovits Schersl CL, High efficiency process for the recovery of the high pure sterols.
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Giroux Regi,CAX ; Freel Barry,CAX ; Graham Robert,CAX, Natural resin formulations.
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Beasley Todd (Brooks CAX) Merritt Dwight A. (Calgary CAX), Process for reclaiming and/or concentrating waste aqueous solutions of gas treating chemicals.
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Hallenburg Douglas J. (Mentor OH) Clark Alan C. (Mentor OH) Hambrick James L. (Chesterland OH), Process for recovering and purifying unreacted acrylonitrile from the waste stream in the manufacture of 2-acrylamido-2-.
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Malzahn Dale E. (Dearborn Heights MI), Process for recovering anhydrous alkanesulfonic acids by reduced pressure, falling film evaporation.
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Abry Raymond G.,CAX ; Beasley Todd S.,CAX ; Carlson Stephen W. ; Kresoyak Stephen G.,CAX, Process for recovering processing liquids.
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Razzaghi, Minoo; Kresnyak, Stephen G.; Keast, Brian A.; Giles, Timothy W., Process for recovering processing liquids.
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Stamerjohn David M. (Columbus OH) Norton Richard V. (Columbus OH) Sturtz Gregory P. (Worthington OH), Process for recovery of amine from spent acid stripping liquor.
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Stamerjohn, David M.; Norton, Richard V.; Sturtz, Gregory P., Process for recovery of amine from spent acid stripping liquor.
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Yukio Inaba JP; Kazunori Fujita JP; Hiroshi Kofuji JP, Process for refining heat-deteriorative compound, contained in multi-component liquid mixture, by distillation.
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Harris Samuel W. (Oklahoma City OK) Roach Jack W. (Oklahoma City OK), Process for separating bituminous materials.
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Van Grinsven Petrus Franciscus Antonius,NLX ; Van Heeringen Gijsbert Jan,NLX, Process for the purification of an alkanolamine.
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Inada,Shuji; Sato,Kikuchi, Processes for the purification of bis(2-hydroxyethyl)terephthalate.
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Yan Tsoung Y. (Philadelphia PA), Reclamation of alkanolamine solutions.
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Cox Jerry W. (Beaumont TX) Wilkes Mulkey C. (Beaumont TX), Reclamation of spent glycol by treatment with alkali metal hydroxide and distillation.
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Roach Jack W. (Oklahoma City OK), Recovery of organic solvents from liquid mixtures.
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Guth Hans (Berg. Neukirchen DT) Kaiser Hans-Joachim (Leverkusen DT) Kleine-Weischede Klaus (Leverkusen DT) Wieschen Hermann (Cologne DT) Kuhnlein Hans L. (Fullinsdorf CH), Separation of corrosive liquid mixtures.
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[미국특허] Process for purifying processing fluids 원문보기

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