Comparison of two fiber lines using continuous and super-batch cooking system | |
| Author | Yang, Jian |
| Call Number | AIT Thesis no.PP-03-3 |
| Subject(s) | Eucalyptus camaldulensis Sulphate pulping process Fibers |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Two fiber lines use Superbatch and ITC kraft cooking systems, Eucalyptus camaldulensis as the raw material. From a point view of fiber quality, the comparison of both lines was carried out through sampling the identical samples along the process flow, and reference pulp of each step was analyzed through various measurements, important data of the mill were collected and analyzed. Also the lab simulation pulping was done, different COD carry-overs were applied to the simulated oxygen delignification, and later bleaching. Papers were made from all final bleached pulps and the strength properties, as well as optical prope1iies were measured and compared. The results show that the fiber line applying ITC cooking preserve better fiber quality, two-stage 02-delignification works more efficiently than single-stage 02-delignification, both mills have quite high chemical charge at 02 stage, especially mill 2. Bleaching plants kappa factors were rather high, the pulp of ITC line has better bleachability. The effect of COD carry-over on 02-delignification within range studied was small. |
| Year | 2003 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Pulp and Paper Technology (PP) |
| Chairperson(s) | Malinen, Raimo |
| Examination Committee(s) | Kolehmainen, Heikki;Viljakainen, Esa |
| Scholarship Donor(s) | Government of Finland;AIT Fellowship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2003 |