IT1244498B - Procedimento per il trattamento disinquinante di soluzione acquose di soda caustica esauste da depurazione e lavaggio di prodotti petroliferi. - Google Patents

Procedimento per il trattamento disinquinante di soluzione acquose di soda caustica esauste da depurazione e lavaggio di prodotti petroliferi.

Info

Publication number
IT1244498B
IT1244498B ITRM910118A ITRM910118A IT1244498B IT 1244498 B IT1244498 B IT 1244498B IT RM910118 A ITRM910118 A IT RM910118A IT RM910118 A ITRM910118 A IT RM910118A IT 1244498 B IT1244498 B IT 1244498B
Authority
IT
Italy
Prior art keywords
exhausted
caustic soda
aqueous solutions
purification
washing
Prior art date
Application number
ITRM910118A
Other languages
English (en)
Inventor
Aldo Imerito
Domenico Mencarelli
Original Assignee
Ecotec Srl
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 Ecotec Srl filed Critical Ecotec Srl
Priority to ITRM910118A priority Critical patent/IT1244498B/it
Publication of ITRM910118A0 publication Critical patent/ITRM910118A0/it
Priority to DE69200296T priority patent/DE69200296T2/de
Priority to EP92830030A priority patent/EP0509964B1/en
Priority to ES92830030T priority patent/ES2057980T3/es
Publication of ITRM910118A1 publication Critical patent/ITRM910118A1/it
Application granted granted Critical
Publication of IT1244498B publication Critical patent/IT1244498B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G19/00—Refining hydrocarbon oils in the absence of hydrogen, by alkaline treatment
    • C10G19/08—Recovery of used refining agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Physical Water Treatments (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Il procedimento per il trattamento disinquinante di soluzioni acquose di soda caustica esauste da depurazione e lavaggio di prodotti petroliferi è basato sull'impiego sinergico di ozono e ipoclorito di calcio. Più precisamente, il procedimento della presente invenzione consiste essenzialmente nel sottoporre le soluzioni acquose di soda caustica esauste alle seguenti operazioni.:- una prima ossidazione con 0,5-3,5 kg di 03/kg di fenoli totali, a temperature comprese nell'intervallo 38-42°C; - una seconda ossidazione con 5-10% in peso di ipoclorito di calcio, riferito alla soda caustica esausta già ozonizzata, a temperature scelte nell'intervallo tra 25 e 35°C, con formazione di una torbida a sospensione fioccosa; e - una separazione della torbida formata in una fase liquida ed in una fase solida, ciascuna delle quali può essere smaltita in modo molto più facile e sicuro, sotto il profilo ecologico, della soluzione di soda caustica esausta di partenza.
ITRM910118A 1991-02-20 1991-02-20 Procedimento per il trattamento disinquinante di soluzione acquose di soda caustica esauste da depurazione e lavaggio di prodotti petroliferi. IT1244498B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITRM910118A IT1244498B (it) 1991-02-20 1991-02-20 Procedimento per il trattamento disinquinante di soluzione acquose di soda caustica esauste da depurazione e lavaggio di prodotti petroliferi.
DE69200296T DE69200296T2 (de) 1991-02-20 1992-01-27 Verfahren zur Behandlung von gebrauchten, wässrigen Ätzalkalilösungen die zur Reinigung und zum Waschen von Petroleumprodukten verwendet wurden.
EP92830030A EP0509964B1 (en) 1991-02-20 1992-01-27 Process for the treatment of spent aqueous solutions of caustic soda used for purification and washing of petroleum products
ES92830030T ES2057980T3 (es) 1991-02-20 1992-01-27 Procedimiento para el tratamiento de disoluciones acuosas gastadas de sosa caustica utilizadas para la purificacion y lavado de productos petroliferos.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM910118A IT1244498B (it) 1991-02-20 1991-02-20 Procedimento per il trattamento disinquinante di soluzione acquose di soda caustica esauste da depurazione e lavaggio di prodotti petroliferi.

Publications (3)

Publication Number Publication Date
ITRM910118A0 ITRM910118A0 (it) 1991-02-20
ITRM910118A1 ITRM910118A1 (it) 1992-08-20
IT1244498B true IT1244498B (it) 1994-07-15

Family

ID=11399889

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910118A IT1244498B (it) 1991-02-20 1991-02-20 Procedimento per il trattamento disinquinante di soluzione acquose di soda caustica esauste da depurazione e lavaggio di prodotti petroliferi.

Country Status (4)

Country Link
EP (1) EP0509964B1 (it)
DE (1) DE69200296T2 (it)
ES (1) ES2057980T3 (it)
IT (1) IT1244498B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5885422A (en) * 1997-02-26 1999-03-23 Stone & Webster Engineering Corporation Spent caustic (pre)treatment process
IT1307285B1 (it) * 1999-11-30 2001-10-30 Ecotec Srl Trattamento disinquinante e rigenerazione di soluzioni acquose di sodacaustica esauste da depurazione e lavaggio di prodotti petroliferi, ed
US7713399B2 (en) 2005-05-12 2010-05-11 Saudi Arabian Oil Company Process for treating a sulfur-containing spent caustic refinery stream using a membrane electrolyzer powered by a fuel cell
CO6170071A1 (es) * 2008-12-12 2010-06-18 Ecopetrol Sa Proceso para el tratamiento de sodas gastadas y del producto obtenido en el mismo proceso
MY171355A (en) 2012-08-14 2019-10-10 Bl Technologies Inc Demulsifying compositions and methods of use
US9260601B2 (en) 2012-09-26 2016-02-16 General Electric Company Single drum oil and aqueous products and methods of use

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB859286A (en) * 1958-09-19 1961-01-18 Universal Oil Prod Co Process for regenerating used alkaline reagents

Also Published As

Publication number Publication date
ES2057980T3 (es) 1994-10-16
EP0509964A1 (en) 1992-10-21
EP0509964B1 (en) 1994-08-03
DE69200296T2 (de) 1995-02-09
ITRM910118A1 (it) 1992-08-20
DE69200296D1 (de) 1994-09-08
ITRM910118A0 (it) 1991-02-20

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970225