Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB19952/21A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zellsloff Fabrik Waldhof AG
Original Assignee
Zellsloff Fabrik Waldhof AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zellsloff Fabrik Waldhof AGfiledCriticalZellsloff Fabrik Waldhof AG
Publication of GB168866ApublicationCriticalpatent/GB168866A/en
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C7/00—Digesters
D21C7/06—Feeding devices
Abstract
168,866. Zellstofffabrik Waldhof, and Clemm, H. Sept. 4, 1920, [Convention date]. Pulp, preparation of.-In filling a pulp boiler, heated sulphite lye is forced into the boiler by means of a pump &c., the escape of gases from the boiler being controlled by a relief valve. The temperature of the lye pumped in may exceed 90 C.
GB19952/21A1920-09-041921-07-25Improved process of filling pulp boilers with heated sulphite lye
ExpiredGB168866A
(en)