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1. (BG62608) METHOD FOR SULPHUR OXIDE-CONTAINING FURNACE GAS TREATMENT

Office : Bulgaria
Application Number: 10241598 Application Date: 29.04.1998
Publication Number: 62608 Publication Date: 30.12.1998
Grant Number: 62608 Grant Date: 31.03.2000
Publication Kind : B1
IPC:
B01D 53/50
B01D 53/68
B01D 53/81
C01D 5/00
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
46
Removing components of defined structure
48
Sulfur compounds
50
Sulfur oxides
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
46
Removing components of defined structure
68
Halogens or halogen compounds
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
74
General processes for purification of waste gases; Apparatus or devices specially adapted therefor
81
Solid phase processes
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
D
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
5
Sulfates or sulfites of sodium, potassium, or alkali metals in general
CPC:
B01D 53/508
B01D 53/68
C01D 5/00
Applicants: NOVACARB
Inventors: FOURCOT FABRICE
POUXVIEL JEAN-CLAUDE
Priority Data: 9512975 31.10.1995 FR
9601719 31.10.1996 FR
Title: (BG) МЕТОД ЗА ОБРАБОТВАНЕ НА ПЕЩНИ ГАЗОВЕ, СЪДЪРЖАЩИ СЕРЕН ОКСИД
(EN) METHOD FOR SULPHUR OXIDE-CONTAINING FURNACE GAS TREATMENT
Abstract:
(BG) Методът създава възможност за повторно използванена получения натриев сулфат. По него се работи посух или полусух начин, като газовете се обработват с реактив, избран от натриев карбонат, натриев хидрогенкарбонат и смеси от тях. Получените натриеви сулфати се разтварят селективно във вода, твърдите вещества, оставащи в суспензия в разтвора, се отделят и пречистеният натриев сулфат, намиращ се вразтвора, кристализира.
(EN) The method enables the secondary use of the sodium suplphate produced. By it the dry or semidry method is used when the gases are treated with a reagent selected among sodium carbonate, sodium hydrogencarbonate and mixtures thereof. The soidum suphates produced are selectively dissolved in water, the solid substances left in suspension in the solution are separated and the treated sodium sulphate found in the solution crystallizes. 18 claims
Also published as:
ES2153990EP0858428US6180074JPH11514567 CA2233246DE000069611689
PT858428AU1996074995FR2740354DK0858428WO/1997/016376