JPS4832805A - - Google Patents

Info

Publication number
JPS4832805A
JPS4832805A JP47084145A JP8414572A JPS4832805A JP S4832805 A JPS4832805 A JP S4832805A JP 47084145 A JP47084145 A JP 47084145A JP 8414572 A JP8414572 A JP 8414572A JP S4832805 A JPS4832805 A JP S4832805A
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP47084145A
Other languages
Japanese (ja)
Other versions
JPS552414B2 (enExample
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS4832805A publication Critical patent/JPS4832805A/ja
Publication of JPS552414B2 publication Critical patent/JPS552414B2/ja
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/005—Processes comprising at least two steps in series
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/04—Purification; Separation; Use of additives by distillation
    • C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
    • C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/02—Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/08—Arrangements for interconnection between switching centres for phantom working
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of DC pulses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
JP8414572A 1971-08-26 1972-08-24 Expired JPS552414B2 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00175233A US3775259A (en) 1971-08-26 1971-08-26 Isoprene recovery process by plural extractive distillations

Publications (2)

Publication Number Publication Date
JPS4832805A true JPS4832805A (enExample) 1973-05-02
JPS552414B2 JPS552414B2 (enExample) 1980-01-19

Family

ID=22639485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8414572A Expired JPS552414B2 (enExample) 1971-08-26 1972-08-24

Country Status (9)

Country Link
US (1) US3775259A (enExample)
JP (1) JPS552414B2 (enExample)
BE (1) BE787944A (enExample)
CA (1) CA997296A (enExample)
DE (1) DE2241568C2 (enExample)
FR (1) FR2150477A1 (enExample)
GB (1) GB1344219A (enExample)
IT (1) IT964249B (enExample)
NL (1) NL173634C (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730658A (en) * 1980-07-28 1982-02-18 Hitachi Ltd Controller for motor blower

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081332A (en) * 1976-08-27 1978-03-28 The B. F. Goodrich Company Extractive distillation of C5 hydrocarbons using acetonitrile and additives
JPS5770421U (enExample) * 1980-10-17 1982-04-28
JPS5879932A (ja) * 1981-11-06 1983-05-13 Japan Synthetic Rubber Co Ltd ブタジエン又はイソプレンの精製方法
DE3338269A1 (de) * 1983-10-21 1985-05-02 Basf Ag, 6700 Ludwigshafen Verfahren zur gewinnung von isopren aus einem c(pfeil abwaerts)5(pfeil abwaerts)-kohlenwasserstoffgemisch
DE4109632A1 (de) * 1991-03-23 1992-09-24 Krupp Koppers Gmbh Verfahren zur abtrennung von aromaten durch extraktivdestillation
US20110178349A1 (en) * 2010-01-20 2011-07-21 Anzick Robert Kenneth Method of treating a hydrocarbon stream comprising cyclopentadiene and one or more diolefins
US9440947B2 (en) * 2012-02-26 2016-09-13 Amt International, Inc. Regeneration of selective solvents for extractive processes
AR101431A1 (es) * 2013-06-05 2016-12-21 Gtc Technology Us Llc Proceso y aparatos para separar di-olefinas c₅ de naftas de pirólisis
WO2015026649A1 (en) 2013-08-22 2015-02-26 General Electric Company Use of polyamines as a cs2 scavenger in isoprene production
WO2016097999A1 (en) 2014-12-18 2016-06-23 Sabic Global Technologies B.V. Isoprene extraction with preserved c5 feedstock
CN113426151A (zh) * 2021-07-26 2021-09-24 常州乐研分离技术有限公司 一种碳纤维生产过程中溶剂dmso精馏回收工艺的装置及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012947A (en) * 1959-06-15 1961-12-12 Exxon Research Engineering Co Recovery of high purity isoprene from light steam cracked distillate
BE672305A (enExample) * 1962-05-18
DE1211738B (de) * 1962-12-22 1966-03-03 Erdoelchemie Gmbh Verfahren zur Trennung von C-Kohlenwasserstoffgemischen, die paraffinische, monoolefinische und diolefinische C-Kohlen-wasserstoffe enthalten
DE1668017A1 (de) * 1967-09-06 1971-07-22 Bayer Ag Verfahren zur Rein-Darstellung von Isopren
US3496070A (en) * 1967-11-09 1970-02-17 Petro Tex Chem Corp Purification of unsaturated hydrocarbons by extractive distillation with addition of liquid solvent to stripper overhead

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730658A (en) * 1980-07-28 1982-02-18 Hitachi Ltd Controller for motor blower

Also Published As

Publication number Publication date
NL173634B (nl) 1983-09-16
FR2150477B1 (enExample) 1976-10-29
US3775259A (en) 1973-11-27
BE787944A (fr) 1973-02-26
DE2241568A1 (de) 1973-03-08
NL7211537A (nl) 1973-02-28
CA997296A (en) 1976-09-21
NL173634C (nl) 1984-02-16
IT964249B (it) 1974-01-21
JPS552414B2 (enExample) 1980-01-19
DE2241568C2 (de) 1983-03-17
GB1344219A (en) 1974-01-16
FR2150477A1 (fr) 1973-04-06

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