FR2285169A1 - Preventing corrosion and dust deposition by gas effluents - in glass-melting installation by injecting alkaline powders into gas ducts - Google Patents
Preventing corrosion and dust deposition by gas effluents - in glass-melting installation by injecting alkaline powders into gas ductsInfo
- Publication number
- FR2285169A1 FR2285169A1 FR7431703A FR7431703A FR2285169A1 FR 2285169 A1 FR2285169 A1 FR 2285169A1 FR 7431703 A FR7431703 A FR 7431703A FR 7431703 A FR7431703 A FR 7431703A FR 2285169 A1 FR2285169 A1 FR 2285169A1
- Authority
- FR
- France
- Prior art keywords
- melting
- gas
- glass
- pref
- sulphates
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—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, aerosols
- B01D53/34—Chemical or biological purification of waste gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
Corrosion of effluent gas ducts in glass melting installations is suppressed by uniformly introducing into the aggressive effluent gases a finely pulverised cpd., pref. an oxide or hydroxide of Mg,Ca,Na or K. The powder (5-10 mu, pref. 10 mu) is injected into the gases in an amt. of 1-10 mg.equiv/Nm3 (pref. 4-8 mg. equiv./Nm3). Corrosive sulphuric vapours and particles of low-melting pyrosulphates or bisulphate of Na,K, and also their carbonates, sulphates, etc. contained in effluent gases from glass-melting installations, react with each other when the temp. of the gas phase drops below 460 degrees C forming low-melting substances corroding the installations and forming deposits reducing the heat transfer rate. Iron is attacked by the pyrosulphates and bisulphates of Na and K with formation of FeSO4. The injection of the oxides or hydroxides of alkali(ne earth) metals neutralises the acid components of the gas effluents; high-melting neutral sulphates are formed; corrosion is prevented; deposn. of dust is reduced because the particles of the high-melting sulphates are not tacky of temps. below 460 degrees C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7431703A FR2285169A1 (en) | 1974-09-19 | 1974-09-19 | Preventing corrosion and dust deposition by gas effluents - in glass-melting installation by injecting alkaline powders into gas ducts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7431703A FR2285169A1 (en) | 1974-09-19 | 1974-09-19 | Preventing corrosion and dust deposition by gas effluents - in glass-melting installation by injecting alkaline powders into gas ducts |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2285169A1 true FR2285169A1 (en) | 1976-04-16 |
FR2285169B1 FR2285169B1 (en) | 1977-03-25 |
Family
ID=9143253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7431703A Granted FR2285169A1 (en) | 1974-09-19 | 1974-09-19 | Preventing corrosion and dust deposition by gas effluents - in glass-melting installation by injecting alkaline powders into gas ducts |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2285169A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985002453A1 (en) * | 1983-11-25 | 1985-06-06 | Waagner-Biró Aktiengesellschaft | Process for separating acid polluting gas and combustion plant |
FR2562442A1 (en) * | 1984-04-10 | 1985-10-11 | Hitachi Shipbuilding Eng Co | PROCESS FOR THE PURIFICATION OF EXHAUST GAS |
EP0253480A2 (en) * | 1986-06-16 | 1988-01-20 | Wallace B. Smith | Process for removal of particulates and SO2 from combustion gases |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3211423A1 (en) * | 1982-03-27 | 1983-09-29 | Karrena GmbH, 4000 Düsseldorf | METHOD FOR REDUCING THE RAIN OF ACID |
-
1974
- 1974-09-19 FR FR7431703A patent/FR2285169A1/en active Granted
Non-Patent Citations (1)
Title |
---|
NEANT * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985002453A1 (en) * | 1983-11-25 | 1985-06-06 | Waagner-Biró Aktiengesellschaft | Process for separating acid polluting gas and combustion plant |
FR2562442A1 (en) * | 1984-04-10 | 1985-10-11 | Hitachi Shipbuilding Eng Co | PROCESS FOR THE PURIFICATION OF EXHAUST GAS |
DE3511759A1 (en) * | 1984-04-10 | 1985-10-17 | Hitachi Zosen Corp., Osaka | METHOD AND DEVICE FOR PURIFYING EXHAUST GAS |
EP0253480A2 (en) * | 1986-06-16 | 1988-01-20 | Wallace B. Smith | Process for removal of particulates and SO2 from combustion gases |
EP0253480A3 (en) * | 1986-06-16 | 1988-04-06 | Wallace B. Smith | Process for removal of particulates and so2 from combustion gases |
Also Published As
Publication number | Publication date |
---|---|
FR2285169B1 (en) | 1977-03-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
DL | Decision of the director general to leave to make available licences of right | ||
ST | Notification of lapse |