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公开(公告)号：US3841961A
公开(公告)日：1974-10-15
申请号：US21278671
申请日：1971-12-27
Applicant: TAMPELLA OY AB
Inventor： SAIHA E
CPC classification number: D21C11/0071 , Y10S423/03
Abstract: REACTIONS IN THE RANGE OF ABOUT 25* TO 40*C.; REMOVING CARBONATED SOLUTION FROM THE TOWER.
1. A METHOD FOR THE CARBONATION OF SULPHIDE-CONTAINING GREEN LIQUOR SOLUTIONS OBTAINED FROM THE RECOVERY SYSTEMS OF PULP MILLS USING SODIUM BASE DIGESTION COMPRISING PASSING GREEN LIQUOR SOLUTION THROUGH AN ABSORPTION TOWER COUNTER-CURRENTLY TO A FLOW OF CARBONATION GAS CONTAINING AT LEAST TWICE THE AMOUNT OF CARBON DIOXIDE THAT THE GREEN LIQUOR IS CAPABLE OF ABSORBING FEEDING SAID CARBONATION GAS INTO A LOWER PORTION OF SAID TOWER PACKED WITH CONTACT SURFACE INCREASING PACKING, CONTACTING SAID CARBONATION GAS WITH SAID GREEN LIQUOR IN SAID LOWER PORTION, SAID AMOUNT OF GAS BEING SUFFICIENT TO CONVERT THE SULPHITE CONTENT OF SAID SOLUTION TO BISULPHIDE, CARBONATE AND BICARBONATE WHILE LIBERATING A MINOR PORTION ONLY OF SAID SULPHIDE CONTENT AS HYDROGEN SULPHIDE ALLOWING UNABSORBED CARBON DIOXIDE AND SAID LIBERATED HYDROGEN SULPHIDE TO PASS UPWARD INTO AN UNPACKED UPPER PORTION OF SAID TOWER, SPRAYING FURTHER FRESH GREEN LIQUOR SOLUTION FROM ABOVE SO THAT FINE DROPLETS OF GREEN LIQUOR SOLUTION CONTACT THE GASES RISING IN THE UNPACKED UPPER TOWER PORTION, SELECTIVELY REABSORBING SUBSTANTIALLY ALL OF SAID HYDROGEN SULPHIDE IN SAID FRESH GREEN LIQUOR SOLUTION AS BISULPHIDE; MAINTAINING A TEMPERATURE FAVOURABLE TO THE-
公开(公告)号：SE8601904D0
公开(公告)日：1986-04-24
申请号：SE8601904
申请日：1986-04-24
Applicant: TAMPELLA OY AB
Inventor： RUOHOLA T , SAIHA E , KUUKKANEN K , HYOTY P
Abstract: A process for the recovery of heat and chemicals from spent liquor by evaporating water out from it in order to concentrate the liquor and be feeding the concentrated liquor thereby obtained and air into the soda-ash furnace. In order to increase the dry-matter content of the liquor to a level higher than usual, without at the same time increasing the viscositty of the liquor immoderately, at least the final concentrating (5, 9) of the liquor and its feeding (16) into the soda-ash furnace (4) are carried out under pressure at a temperature higher than the atmospheric boiling point of the liquor.
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公开(公告)号：SE8601217L
公开(公告)日：1986-09-19
申请号：SE8601217
申请日：1986-03-14
Applicant: TAMPELLA OY AB
Abstract: The invention relates to a method of regulating, for the purpose of burning soda-ash in a recovery boiler furnace, the feeding-in or combustion conditions of concentrated spent liquors of varying chemical and physical properties by measuring some physical property of a liquor fed into the recovery boiler furnace and by regulating the feeding-in and combustion conditions directly on the basis of the thus measured physical properties. According to the invention, the maximum swelling, upon heating, of a dry-matter particle of the liquor fed into the recovery boiler furnace is measured. On the basis of this measurement the temperature, pH value, or injection pressure of the liquor fed into the furnace, or the height of the injection point or the direction of injection, or the feeding of air into the furnace is adjusted directly on the basis of the maximum swelling measurement.
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Patent Agency Ranking
公开(公告)号：SE309355B
公开(公告)日：1969-03-17
申请号：SE1601066
申请日：1966-11-23
Applicant: TAMPELLA OY AB
Inventor： SAIHA E
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公开(公告)号：FI40257B
公开(公告)日：1968-07-31
申请号：FI282765
申请日：1965-11-24
Applicant: TAMPELLA OY AB
Inventor： SAIHA E
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公开(公告)号：SE8601217D0
公开(公告)日：1986-03-14
申请号：SE8601217
申请日：1986-03-14
Applicant: TAMPELLA OY AB
Abstract: The invention relates to a method of regulating, for the purpose of burning soda-ash in a recovery boiler furnace, the feeding-in or combustion conditions of concentrated spent liquors of varying chemical and physical properties by measuring some physical property of a liquor fed into the recovery boiler furnace and by regulating the feeding-in and combustion conditions directly on the basis of the thus measured physical properties. According to the invention, the maximum swelling, upon heating, of a dry-matter particle of the liquor fed into the recovery boiler furnace is measured. On the basis of this measurement the temperature, pH value, or injection pressure of the liquor fed into the furnace, or the height of the injection point or the direction of injection, or the feeding of air into the furnace is adjusted directly on the basis of the maximum swelling measurement.
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公开(公告)号：SE465581B
公开(公告)日：1991-09-30
申请号：SE8601217
申请日：1986-03-14
Applicant: TAMPELLA OY AB
Abstract: The invention relates to a method of regulating, for the purpose of burning soda-ash in a recovery boiler furnace, the feeding-in or combustion conditions of concentrated spent liquors of varying chemical and physical properties by measuring some physical property of a liquor fed into the recovery boiler furnace and by regulating the feeding-in and combustion conditions directly on the basis of the thus measured physical properties. According to the invention, the maximum swelling, upon heating, of a dry-matter particle of the liquor fed into the recovery boiler furnace is measured. On the basis of this measurement the temperature, pH value, or injection pressure of the liquor fed into the furnace, or the height of the injection point or the direction of injection, or the feeding of air into the furnace is adjusted directly on the basis of the maximum swelling measurement.
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公开(公告)号：SE8601904L
公开(公告)日：1986-10-26
申请号：SE8601904
申请日：1986-04-24
Applicant: TAMPELLA OY AB
Inventor： RUOHOLA T , SAIHA E , KUUKKANEN K , HYOTY P
Abstract: A process for the recovery of heat and chemicals from spent liquor by evaporating water out from it in order to concentrate the liquor and be feeding the concentrated liquor thereby obtained and air into the soda-ash furnace. In order to increase the dry-matter content of the liquor to a level higher than usual, without at the same time increasing the viscositty of the liquor immoderately, at least the final concentrating (5, 9) of the liquor and its feeding (16) into the soda-ash furnace (4) are carried out under pressure at a temperature higher than the atmospheric boiling point of the liquor.
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