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Abstract
The present invention relates to a method for controlling discharges of nitrogen compounds in the production of cellulose carbamate (CCA). Dissolving pulp (DP) or kraft pulp is produced at a pulp mill, and the DP or kraft pulp is activated. The activated pulp is reacted with urea to produce cellulose carbamate whereby ammonia is released. The cellulose carbamate production is integrated into the pulp mill having a flue gas system such that carbon dioxide from the flue gases is reacted with released ammonia to produce urea, which is used in the carbamate production.
Information
| Application ID | 202247033991 |
| Invention Field | TEXTILE |
| Date of Application | 2022-06-14 |
| Publication Number | 24/2022 |
Applicants
| Name | Address | Country | Nationality |
|---|---|---|---|
| ANDRITZ OY | Tammasaarenkatu 1 00180 Helsinki | Finland | Finland |
Inventors
| Name | Address | Country | Nationality |
|---|---|---|---|
| RÅMARK, Hannu | P.O. Box 500 c/o Andritz Oy FI-48601 Kotka | Finland | Finland |
| VALTA, Kyösti | Niemikatu 7 B 10 33230 Tampere | Finland | Finland |
| VANHATALO, Kari | P.O. Box 500 c/o Andritz Oy FI-48601 Kotka | Finland | Finland |
Specification
Documents
| Name | Date |
| 202247033991.pdf | 2022-06-14 |
| 202247033991-STATEMENT OF UNDERTAKING (FORM 3) [14-06-2022(online)].pdf | 2022-06-14 |
| 202247033991-PROOF OF RIGHT [14-06-2022(online)].pdf | 2022-06-14 |
| 202247033991-PRIORITY DOCUMENTS [14-06-2022(online)].pdf | 2022-06-14 |
| 202247033991-FORM 1 [14-06-2022(online)].pdf | 2022-06-14 |
| 202247033991-DECLARATION OF INVENTORSHIP (FORM 5) [14-06-2022(online)].pdf | 2022-06-14 |
| 202247033991-DRAWINGS [14-06-2022(online)].pdf | 2022-06-14 |
| 202247033991-COMPLETE SPECIFICATION [14-06-2022(online)].pdf | 2022-06-14 |
Orders
| Applicant | Section | Controller | Decision Date | URL |