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GB493992A - Improvements relating to the recovery of naphthalene - Google Patents

Improvements relating to the recovery of naphthalene

Info

Publication number
GB493992A
GB493992A GB2062/38A GB206238A GB493992A GB 493992 A GB493992 A GB 493992A GB 2062/38 A GB2062/38 A GB 2062/38A GB 206238 A GB206238 A GB 206238A GB 493992 A GB493992 A GB 493992A
Authority
GB
United Kingdom
Prior art keywords
oil
crystallizer
naphthalene
reservoir
press
Prior art date
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.)
Expired
Application number
GB2062/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evence Coppee & Cie
Original Assignee
Evence Coppee & Cie
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 by Evence Coppee & Cie filed Critical Evence Coppee & Cie
Publication of GB493992A publication Critical patent/GB493992A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/14—Purification; Separation; Use of additives by crystallisation; Purification or separation of the crystals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Apparatus for recovery of naphthalene from oil containing it comprises a cooled mixer 3 in which liquid oil and naphthalene are cooled to form a paste, a heated press 7 in which the paste is treated to expel the oil, a crystallizer 12 in which this oil is further cooled to crystallize naphthalene still in solution, and a reservoir 10 between the press and crystallizer for storing the oil. The crystallizer may also be connected to the initial feed 2 and be of sufficient capacity to store <PICT:0493992/IV/1> the crude oil when the press is idle. The oil is cooled in mixer 3 to 40-50 DEG C., and the oil leaving press 7 is at 50-60 DEG C. The reservoir 10 has a capacity sufficient to store this oil while crystallization is in progress or the crystallizer is being emptied or cleaned. After cooling in crystallizer 12, residual oil passes to a reservoir 14, and the separated naphthalene is re-liquefied. The crystallizer is fitted for this purpose with tubes 13 connectable to a source of heating or cooling medium. The liquefied naphthalene is then run into mixer 3. A branch 23 of the feed pipe 2 allows the crystallizer to be used as a reservoir for crude oil. Several crystallizers may be provided.
GB2062/38A 1938-01-03 1938-01-21 Improvements relating to the recovery of naphthalene Expired GB493992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE493992X 1938-01-03

Publications (1)

Publication Number Publication Date
GB493992A true GB493992A (en) 1938-10-18

Family

ID=3870663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2062/38A Expired GB493992A (en) 1938-01-03 1938-01-21 Improvements relating to the recovery of naphthalene

Country Status (2)

Country Link
FR (1) FR835621A (en)
GB (1) GB493992A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067269A (en) * 1952-09-25 1962-12-04 Speckhardt Georg Process for the recovery of naphthalene
US3113161A (en) * 1953-07-11 1963-12-03 Schmalenbach Adolf Process for the production of naphthalene

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159194A (en) * 1977-09-28 1979-06-26 Dart Industries Inc. Crystallization apparatus and process
FR2504403B1 (en) * 1981-04-27 1986-12-26 Befs Engineering Sa METHOD OF CRYSTALLIZING LOW CONCENTRATION SOLUTIONS
EP0051551A1 (en) * 1980-11-04 1982-05-12 B.E.F.S. ENGINEERING S.A. Société Anonyme dite Method and apparatus for the purification of crystallizable compounds, especially from low-concentration solutions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067269A (en) * 1952-09-25 1962-12-04 Speckhardt Georg Process for the recovery of naphthalene
US3113161A (en) * 1953-07-11 1963-12-03 Schmalenbach Adolf Process for the production of naphthalene

Also Published As

Publication number Publication date
FR835621A (en) 1938-12-27

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