Soda-Oxygen pulping

Saukkonen, M., and Palenius, I. (1975). Soda-oxygen pulping of pine wood for different end products. Tappi 58(7), 117-120. 

Figure 7-38 illustrates the recovery and conversion of the kraft cooking chemicals. In the case of sulfur-free pulping (soda process, soda-oxygen process, and anthraquinone-alkali pulping) only sodium carbonate is recovered and chemical losses are compensated by adding sodium carbonate. The hydroxide-carbonate and lime cycles are the same as for the kraft process. 

NH Shin. A Modihed Soda-AQ/Oxygen Pulping Process as an Alternative to Kraft Process for the Production of Bleached Softwood Pulp. PhD Thesis, North Carolina State University, Raleigh, NC, 1988. 

Oxygen-delignified pulp from Eucalyptus grandis was obtained from a soda-aq pulp producing mill in South Africa. Prior to use, pulp was thoroughly washed with distilled water until neutral pH of wash waters was attained, thereafter pulp was air-dried and stored at 4°C until use. 

Miksche, G. E. Lignin reactions in alkaline pulping processes (rate processes in soda pulping). In Chemistry of Delignification with Oxygen, Ozone, and Peroxides Nakano, J. Singh, R. P.,Eds. Uni Publishers Co Tokyo, Japan, 1980 pp. 107-120. 

Rotary Ki1n Soda Ash Catalyst High Pressure No Oxygen Required 3 ODT/D Wood Chips MBG ( 50 BTU/scf) Methanol synthesis gas Small industrial plants, pulp/ paper mi 11s PDU designed startup mid 1980... 

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