Device for recovering sodium chemicals from green liquor and flue gases

Patent · Tue Feb 05 00:00:00 EST 1980

OSTI ID:5684411

Rimpi, P K

A device is disclosed for recovering chemicals from flue gases and green liquor obtained from burning the waste liquor of sodium-based pulping processes. The device comprises a precarbonation reactor, a H/sub 2/S-stripping column, a carbonation reactor, a washing tower for flue gases and a cooling tower for washed flue gases. The carbonation reactor, the cooling tower and the washing tower are arranged on top of each other in the same column which is provided with trays so that means for feeding flue gases from the washing tower into the cooling tower and further into the carbonation reactor are openings made in the trays to allow the washed flue gases to rise from the washing tower into the cooling tower above it and further into the carbonation reactor above the cooling tower. A common blower means is provided for feeding flue gases into the washing tower for blowing flue gases through the washing tower, the cooling tower, the carbonation reactor and the precarbonation reactor and means for discharging a solution containing sodium carbonate and sodium bicarbonate from the stripping column being connected with means for feeding this solution directly into the carbonation reactor and the washing tower.

• Assignee: Tampella Oy Ab (Finland)
• Patent Number(s): US 4187279
• OSTI ID: 5684411
• Resource Relation: Patent Priority Date: Priority date 5 Sep 1977, Finland; Other Information: PAT-APPL-938944
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
FLUE GAS
MATERIALS RECOVERY
SODIUM COMPOUNDS
SPENT LIQUORS
PROCESSING
CHEMICAL REACTORS
COMBUSTION
COOLING
INDUSTRIAL PLANTS
SCRUBBING
WASTE PROCESSING
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
GASEOUS WASTES
INDUSTRIAL WASTES
LIQUID WASTES
MANAGEMENT
OXIDATION
RECOVERY
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management