Process for the production of polysulphide pulping liquor from pulp mill recovery smelt

Patent · Tue May 08 00:00:00 EDT 1979

OSTI ID:5588750

Mueller, W A

Sodium polysulphide is formed by reacting sodium sulphide and sodium sulphur-oxygen salts in the presence of carbon and oxygen. The invention is particularly applicable to reacting recovery furnace smelt from a polysulphide pulping process to form a mixture of sodium polysulphide and sodium carbonate which is substantially free from sodium sulphur-oxygen salts, so that dead-load sulphidity is substantially eliminated from the pulping liquor.

• Assignee: Corrosion Service Company Ltd.
• Patent Number(s): US 4153502
• OSTI ID: 5588750
• Resource Relation: Patent Priority Date: Priority date 6 May 1977, United Kingdom of Great Britain and Northern Ireland (UK)
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
PAPER INDUSTRY
WASTE PRODUCT UTILIZATION
SODIUM SULFIDES
PRODUCTION
ALKALI METAL COMPOUNDS
CHALCOGENIDES
INDUSTRY
SODIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
WOOD PRODUCTS INDUSTRY
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes