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1. 发明公开

EP1561856A1 Method for continuous cooking of cellulose pulp 有权
标题翻译： Verfahren zum kontinuierlichen Kochen von Zellstoffpulpe
公开(公告)号：EP1561856A1
公开(公告)日：2005-08-10
申请号：EP05075245.0
申请日：2005-02-01
申请人： KVAERNER PULPING AB
发明人： Snekkenes, Vidar , Gustavsson, Lennart , Saetheraasen, Jonas
IPC分类号： D21C3/24
CPC分类号： D21C3/24 , D21C3/02 , D21C7/10 , D21C7/14
摘要： A procedure for the continuous cooking of chemical pulp, comprising an impregnation vessel 101 and a digester 102. The chips are impregnated in the impregnation vessel 101 and are fed after impregnation together with circulation fluid through a transfer line 103 to a top separator 105 on the digester 102 in order to be cooked. A fraction of the circulation fluid is withdrawn at a top separator 105 and returned to the bottom of the impregnation vessel 101 via a return line 106. Black liquor is withdrawn from the digester via a black liquor line 108 to the impregnation vessel 101.
The invention is characterised in that a heat exchanger 107 is arranged between the return line 106 and the black liquor line 108. The heat exchanger 107 allows the exchange of heat between the two lines, but does not allow the exchange of fluid. The temperature of the black liquor in the black liquor line 108 after passing through the heat exchanger 107 has been cooled by 10-15 °C.
摘要翻译：用于连续烹饪化学纸浆的方法，包括浸渍容器101和蒸煮器102.将屑浸渍在浸渍容器101中，并且在循环流体通过传输管线103浸渍之后进料到顶部分离器105上蒸煮器102以便烹饪。循环流体的一部分在顶部分离器105处被抽出，并通过回流管线106返回到浸渍容器101的底部。黑液经由黑液液体管线108从浸渍容器101中从蒸煮器中排出。本发明的特征在于，热交换器107设置在返回管线106和黑液管线108之间。热交换器107允许两条管线之间的热交换，但不允许流体的更换。通过热交换器107后的黑液液体管线108中的黑液的温度已经被冷却了10-15℃。

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