FR2277772A1 - Crystallation of sodium carbonate hydrates - by heat exchange using copper, nickel or chromium (coated) heat exchange tubes - Google Patents

Crystallation of sodium carbonate hydrates - by heat exchange using copper, nickel or chromium (coated) heat exchange tubes

Info

Publication number
FR2277772A1
FR2277772A1 FR7521497A FR7521497A FR2277772A1 FR 2277772 A1 FR2277772 A1 FR 2277772A1 FR 7521497 A FR7521497 A FR 7521497A FR 7521497 A FR7521497 A FR 7521497A FR 2277772 A1 FR2277772 A1 FR 2277772A1
Authority
FR
France
Prior art keywords
heat exchange
sodium carbonate
crystallation
chromium
nickel
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
FR7521497A
Other languages
French (fr)
Other versions
FR2277772B1 (en
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.)
Solvay SA
Original Assignee
Solvay 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 Solvay SA filed Critical Solvay SA
Publication of FR2277772A1 publication Critical patent/FR2277772A1/en
Application granted granted Critical
Publication of FR2277772B1 publication Critical patent/FR2277772B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D7/00—Carbonates of sodium, potassium or alkali metals in general
    • C01D7/22—Purification
    • C01D7/24—Crystallisation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D7/00—Carbonates of sodium, potassium or alkali metals in general
    • C01D7/35—Varying the content of water of crystallisation or the specific gravity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Sodium carbonate hepta and decahydrate are obtd. in high purity by crystallisation from a nearby satd. soln. at normal, elevated or reduced atmospheric pressure using a heat exchanger, the surface of which is of Cu, Ni, Cr or an alloy with a high proportion of one of these metals. The encrustation which builds up when using other metals on surfaces is absent or greatly reduced.
FR7521497A 1974-07-09 1975-07-07 Crystallation of sodium carbonate hydrates - by heat exchange using copper, nickel or chromium (coated) heat exchange tubes Granted FR2277772A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE146360A BE817422A (en) 1974-07-09 1974-07-09 PROCESS FOR MANUFACTURING SODIUM CARBONATE CRYSTALS HEPTAHYDRATE OR DECAHYDRATE.

Publications (2)

Publication Number Publication Date
FR2277772A1 true FR2277772A1 (en) 1976-02-06
FR2277772B1 FR2277772B1 (en) 1977-07-22

Family

ID=3842681

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7521497A Granted FR2277772A1 (en) 1974-07-09 1975-07-07 Crystallation of sodium carbonate hydrates - by heat exchange using copper, nickel or chromium (coated) heat exchange tubes

Country Status (6)

Country Link
BE (1) BE817422A (en)
DE (1) DE2524591A1 (en)
ES (1) ES438910A1 (en)
FR (1) FR2277772A1 (en)
IT (1) IT1038617B (en)
NL (1) NL7508178A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108939603B (en) * 2018-09-06 2021-06-18 四川金象赛瑞化工股份有限公司 Method for directly cooling and crystallizing in process of separating sodium sulfate and ammonium sulfate
CN109336134B (en) * 2018-10-19 2021-04-30 四川金象赛瑞化工股份有限公司 Carbonization process adopting refrigerant for cooling

Also Published As

Publication number Publication date
FR2277772B1 (en) 1977-07-22
IT1038617B (en) 1979-11-30
ES438910A1 (en) 1977-02-01
NL7508178A (en) 1976-01-13
BE817422A (en) 1974-11-04
DE2524591A1 (en) 1976-01-22

Similar Documents

Publication Publication Date Title
FR2277772A1 (en) Crystallation of sodium carbonate hydrates - by heat exchange using copper, nickel or chromium (coated) heat exchange tubes
FR2277770A1 (en) Crystallisation of sodium hydroxide hydrates - by heat exchange using copper nickel or chromium (coated) heat exchanger tubes
GB1061709A (en) Method of attaching fins or sheets to tubes and apparatus comprising tubes fitted with or to fins or sheets
JPS52134153A (en) Layer-built heat exchanger
ES355874A1 (en) Improvements in or relating to a Turbulator Element in Combination with a Heat Exchanger Duct
JPS52107227A (en) Heat resisting cu alloy with excellent electro- and heat conductivity
JPS52122216A (en) Stainless steel pipe having excellent high temperature, corrosion resistance for heat exchanger of boiler
FR2327318A1 (en) Brazing two part air pipe for a blast furnace - using a low temp., low copper brazing metal and a low carbon steel
JPS5378472A (en) Heat exchange pipe of nuclear reactor
JPS531360A (en) Indirect heat exchanger
JPS52131247A (en) Evaporator
JPS52152242A (en) Thermal element for typing
JPS53116555A (en) Heat exchanger
JPS534250A (en) Aluminium heat exchanger
JPS5258150A (en) Heat exchanger
JPS5316952A (en) Heat pipe
JPS5299464A (en) This screw cramp slides set-screw
JPS51116444A (en) A process of manufacturing aluminum type heat exchangers
JPS5324164A (en) Exhaust gas heat exchanger
JPS56117095A (en) Heat exchanger
JPS5430550A (en) Heat exchanger
JPS5217240A (en) Method for producing heat exchanger
JPS527057A (en) Heat exchanger using metallic hydride
JPS5234448A (en) Brazing method of heat exchanger
JPS5279358A (en) Oil cooler

Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse