| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | 纤维素纺丝过程中的碱再循环 | CN201480036155.9 | 2014-06-27 | CN105517955A | 2016-04-20 | 拉斯·斯蒂格松; 本哥特·哈格斯特伦; 托比亚斯·科恩克; 阿特·赫德伦; 玛尔塔·比亚利克 |
| 本发明涉及在使用氢氧化钠作为制造纤维素纺丝原液时溶解纤维素的溶剂制备再生型纤维素纤维的过程中回收氢氧化钠的方法，其中将所述纺丝原液中存在的氢氧化钠至少部分地作为氢氧化钠从纤维素纤维再生步骤或纤维素凝固步骤回收并再循环，并且其中所述纤维素纤维再生步骤或纤维素凝固步骤由注入纤维素纺丝原液的浴组成。可以将回收的氢氧化钠直接或间接地从纤维素纤维再生步骤或纤维素凝固步骤再循环至纤维素溶解步骤。 | ||||||
| 2 | Recovery of sodium sulfate | US78384647 | 1947-11-03 | US2521367A | 1950-09-05 | JAMES HEGAN HORACE |
| 3 | Alkali recycle in cellulose spinning process | US14900904 | 2014-06-27 | US10138578B2 | 2018-11-27 | Lars Stigsson; Bengt Hagström; Tobias Köhnke; Artur Hedlund; Marta Bialik |
| The present invention concerns a method for the recovery of solvent in a process for preparation of regenerated cellulosic fibers using sodium hydroxide as solvent for cellulose dissolving in the manufacturing of a cellulose spinning dope wherein sodium hydroxide present in the spinning dope is at least partially recovered and recycled as sodium hydroxide from a cellulose fiber regeneration or cellulose coagulation step and wherein said cellulose fiber regeneration or cellulose coagulation step consists of a bath into which cellulose spinning dope is injected. Recovered sodium hydroxide may be directly or indirectly recycled from a cellulose fiber regeneration or cellulose coagulation step to a cellulose dissolving step. | ||||||
| 4 | Process for the desulfation of coagulation baths for the spinning of viscose | US76156647 | 1947-07-17 | US2512266A | 1950-06-20 | LOUIS CAUTE |
| 5 | ALKALI RECYCLE IN CELLULOSE SPINNING PROCESS | US14900904 | 2014-06-27 | US20160138200A1 | 2016-05-19 | Lars Stigsson; Bengt Hagström; Tobias Köhnke; Artur Hedlund; Marta Bialik |
| The present invention concerns a method for the recovery of solvent in a process for preparation of regenerated cellulosic fibers using sodium hydroxide as solvent for cellulose dissolving in the manufacturing of a cellulose spinning dope wherein sodium hydroxide present in the spinning dope is at least partially recovered and recycled as sodium hydroxide from a cellulose fiber regeneration or cellulose coagulation step and wherein said cellulose fiber regeneration or cellulose coagulation step consists of a bath into which cellulose spinning dope is injected. Recovered sodium hydroxide may be directly or indirectly recycled from a cellulose fiber regeneration or cellulose coagulation step to a cellulose dissolving step. | ||||||
| 6 | ALKALI RECYCLE IN CELLULOSE SPINNING PROCESS | EP14739082.7 | 2014-06-27 | EP3016908A1 | 2016-05-11 | STIGSSON, Lars; HAGSTRÖM, Bengt; KÖHNKE, Tobias; HEDLUND, Artur; BIALIK, Marta |
| The present invention concerns a method for the recovery of solvent in a process for preparation of regenerated cellulosic fibers using sodium hydroxide as solvent for cellulose dissolving in the manufacturing of a cellulose spinning dope wherein sodium hydroxide present in the spinning dope is at least partially recovered and recycled as sodium hydroxide from a cellulose fiber regeneration or cellulose coagulation step and wherein said cellulose fiber regeneration or cellulose coagulation step consists of a bath into which cellulose spinning dope is injected. Recovered sodium hydroxide may be directly or indirectly recycled from a cellulose fiber regeneration or cellulose coagulation step to a cellulose dissolving step. | ||||||
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