蒸球低温区的形成与应对措施

Forming of Low Temperature Zone Inside the Globe Digester and Its Solution

关键词:  低温区  对流加温  小液比  蒸煮

Key Words:low temperature zone  convection heating  low liquid ratio  cooking

摘要:对蒸球在蒸煮时低温区的形成进行了分析研究,并提出了应对措施。结果表明,蒸球内碱液浸润后的棉短绒经上层和自身重力挤压出碱液从而形成低温区,使蒸球内温度分布不均匀,造成蒸煮不均匀。采用三通回转阀对流加温以及大液比浸透、小液比蒸煮的措施,可以消除蒸球内的低温区,增强蒸煮的均匀性,提高蒸煮产品质量。

Abstract:When cotton linter was cooked in a globe digester, the alkali solution which was pressed out from the impregnated cotton linter by the weight of upper lager raw material created a low temperature zone, it was formed that using convection heating and low liquid ratio for cooking could eliminate the low temperature zone, achieve uniform pulping and improve the pulp quality.