公开(公告)号：US5378319A

公开(公告)日：1995-01-03

申请号：US57814

申请日：1993-05-07

Applicant: Hoc N. Tran ,  Javad Mostaghimi

Inventor： Hoc N. Tran ,  Javad Mostaghimi

IPC: C04B2/10 ,  D21C11/00 ,  D21C11/04

CPC classification number: D21C11/04 ,  C04B2/10 ,  D21C11/0078 ,  Y02P40/42 ,  Y02P40/44 ,  Y02P40/47

Abstract: Lime mud from kraft pulp recovery operations is processed using dielectric hysteresis heating, in a two-stage operation, in which wet lime mud first is dried then the dried lime mud is decomposed to lime and carbon dioxide. A two-zone lime mud calciner is employed in which the lime mud is conveyed horizontally, with drying being effected in the first zone and then decomposition being effected in the second zone. A co-current flow of purge air removes steam generated in the first zone and a counter-current flow of purge air removes carbon dioxide generated in the second zone.

Abstract translation: 使用介电滞后加热处理来自牛皮纸浆回收操作的石灰泥，在两阶段操作中，其中首先将湿石灰泥干燥，然后将干燥的石灰泥分解成石灰和二氧化碳。 使用双层石灰泥煅烧炉，其中灰泥被水平输送，干燥在第一区域进行，然后在第二区域进行分解。 净化空气的并流流动除去在第一区域产生的蒸汽，并且净流空气的逆流流除去在第二区域中产生的二氧化碳。