FR2351913A1 - Desorption process giving improved steam volatility - for removal of volatile cpds formed by decomposition in the liquid phase by concd milk of lime - Google Patents

Desorption process giving improved steam volatility - for removal of volatile cpds formed by decomposition in the liquid phase by concd milk of lime

Info

Publication number
FR2351913A1
FR2351913A1 FR7715816A FR7715816A FR2351913A1 FR 2351913 A1 FR2351913 A1 FR 2351913A1 FR 7715816 A FR7715816 A FR 7715816A FR 7715816 A FR7715816 A FR 7715816A FR 2351913 A1 FR2351913 A1 FR 2351913A1
Authority
FR
France
Prior art keywords
column
lime
milk
desorption process
steam
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.)
Granted
Application number
FR7715816A
Other languages
French (fr)
Other versions
FR2351913B1 (en
Inventor
Theophile Martens
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.)
Sidmar SA
Original Assignee
Sidmar SA
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 Sidmar SA filed Critical Sidmar SA
Publication of FR2351913A1 publication Critical patent/FR2351913A1/en
Application granted granted Critical
Publication of FR2351913B1 publication Critical patent/FR2351913B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0005—Degasification of liquids with one or more auxiliary substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0005—Degasification of liquids with one or more auxiliary substances
    • B01D19/001—Degasification of liquids with one or more auxiliary substances by bubbling steam through the liquid
    • B01D19/0015—Degasification of liquids with one or more auxiliary substances by bubbling steam through the liquid in contact columns containing plates, grids or other filling elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • B01D3/38—Steam distillation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C02F1/64—Heavy metal compounds of iron or manganese
    • C02F1/645—Devices for iron precipitation and treatment by air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

In a desorption process using a stripping column, consisting of a vertical column with a number of mobile perforated plates installed at a pre-determined distances above each other, which may be made of deformable material e.g. rubber and be connected below each other to make at least one continuous perforated strip, at least one surface of the plates being periodically cleaned mechanically and/or chemically, the effluent to be purified being supplied to the top of the column at the base of which air, steam, or any other gas mixtures free from impurities and at a suitable temperature, is blown upwardly, while the column is supplied laterally which calcium hydroxide at one or more levels, the ammonia liberated at the top of the column as well as gas or vapour expelled that the base of the column being collected, the improvement whereby the calcium hydroxide is added in the form of milk of lime with a concentration (weight of CaO) >=30%. Not only is ammonia stripped out more efficiently but a number of substances which could not be removed by steam are decomposed to steam volatile materials and thus removed.
FR7715816A 1976-05-17 1977-05-16 Desorption process giving improved steam volatility - for removal of volatile cpds formed by decomposition in the liquid phase by concd milk of lime Granted FR2351913A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE841931 1976-05-17

Publications (2)

Publication Number Publication Date
FR2351913A1 true FR2351913A1 (en) 1977-12-16
FR2351913B1 FR2351913B1 (en) 1983-06-03

Family

ID=3861361

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7715816A Granted FR2351913A1 (en) 1976-05-17 1977-05-16 Desorption process giving improved steam volatility - for removal of volatile cpds formed by decomposition in the liquid phase by concd milk of lime

Country Status (2)

Country Link
FR (1) FR2351913A1 (en)
LU (1) LU77350A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436109A1 (en) * 1978-09-12 1980-04-11 Mitsui Constr APPARATUS FOR THE TREATMENT OF AMMONIAL RESIDUAL LIQUIDS
EP0400169A1 (en) * 1988-05-02 1990-12-05 Qo Chemicals, Inc. Removal of volatile acids from aqueous solutions

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929185C (en) * 1951-06-13 1955-06-20 Kali Chemie Ag Process for the recovery of ammonia from the mother liquors of the ammonia soda factory
DE954149C (en) * 1951-06-13 1956-12-13 Kali Chemie Ag Process for the recovery of ammonia from the mother liquors of the ammonia soda factory
DE1019284B (en) * 1956-05-15 1957-11-14 Chem Fab Kalk Ges Mit Beschrae Process for stripping ammonia from the mother liquors of the ammonia soda factory
BE830595A (en) * 1975-06-24 1975-12-24 IMPROVEMENTS IN THE DESORPTION OF VOLATILE COMPOUNDS DISSOLVED IN A LIQUID PHASE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929185C (en) * 1951-06-13 1955-06-20 Kali Chemie Ag Process for the recovery of ammonia from the mother liquors of the ammonia soda factory
DE954149C (en) * 1951-06-13 1956-12-13 Kali Chemie Ag Process for the recovery of ammonia from the mother liquors of the ammonia soda factory
DE1019284B (en) * 1956-05-15 1957-11-14 Chem Fab Kalk Ges Mit Beschrae Process for stripping ammonia from the mother liquors of the ammonia soda factory
BE830595A (en) * 1975-06-24 1975-12-24 IMPROVEMENTS IN THE DESORPTION OF VOLATILE COMPOUNDS DISSOLVED IN A LIQUID PHASE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436109A1 (en) * 1978-09-12 1980-04-11 Mitsui Constr APPARATUS FOR THE TREATMENT OF AMMONIAL RESIDUAL LIQUIDS
EP0400169A1 (en) * 1988-05-02 1990-12-05 Qo Chemicals, Inc. Removal of volatile acids from aqueous solutions

Also Published As

Publication number Publication date
FR2351913B1 (en) 1983-06-03
LU77350A1 (en) 1977-08-29

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Legal Events

Date Code Title Description
ST Notification of lapse