Avoiding total reduced sulfur (TRS) emissions from sodium sulfite pulping recovery processes

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Tappi; (United States)

OSTI ID:5032245

Norman, J C; Sell, N J ^[1]; Ciriacks, J C ^[2]

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1. Univ. of Wisconsin, Green Bay, WI (US)
2. Engineered Systems International, Appleton, WI (US)

This paper reports that one of the current trends in paper-making with cellulose pulping is the use of high-yield processes. With yields greater than 65%, these processes include mechanical pulps (groundwood and thermomechanical pulps or TMP), and semichemical types (chemi-TMP or CTMP). Groundwood and TMP make up about 10% of North American pulp production. Semichemical pulp makes up about 7% and is mostly used for corrugating medium. High-yield pulping for linerboard, particularly using the alkaline sulfite process, is also likely to be used in the future. High-yield pulping is based primarily on the sulfite process using mostly sodium-based chemicals. A disadvantage of this process is the unavailability of a recovery system for the inorganic pulping chemicals. Generally, mills have not accepted any particular recovery system for this process. For this and other reasons, sulfite processes constitute only 3-4% of the total North American pulp production. If high-yield processes continue to increase in popularity, a sodium sulfite chemical recovery system will be needed. A number of chemical recovery systems have been developed in the past 30 years for sodium-based sulfite pulping processes, with most of the mills successfully using this process located in Scandinavia.

• OSTI ID: 5032245
• Journal Information: Tappi; (United States), Vol. 73:6; ISSN 0039-8241
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
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RESOURCES
RESOURCE RECOVERY FACILITIES
AIR POLLUTION CONTROL
ENVIRONMENTAL IMPACTS
SULFITES
SLURRIES
SULFUR COMPOUNDS
CELLULOSE
CHEMICAL REACTION KINETICS
FURNACES
MATERIALS RECOVERY
SODIUM COMPOUNDS
ALKALI METAL COMPOUNDS
CARBOHYDRATES
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DISPERSIONS
ENERGY FACILITIES
INDUSTRIAL PLANTS
INDUSTRY
KINETICS
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MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLYSACCHARIDES
PROCESSING
REACTION KINETICS
SACCHARIDES
SUSPENSIONS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PROCESSING PLANTS
WOOD PRODUCTS INDUSTRY
320305* - Energy Conservation
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540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)