CN86102407B - 能够解决污染的棉短绒制浆工艺 - Google Patents

能够解决污染的棉短绒制浆工艺 Download PDF

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CN86102407B
CN86102407B CN86102407A CN86102407A CN86102407B CN 86102407 B CN86102407 B CN 86102407B CN 86102407 A CN86102407 A CN 86102407A CN 86102407 A CN86102407 A CN 86102407A CN 86102407 B CN86102407 B CN 86102407B
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pulping
chemical processing
alkaline
cotton linter
cotton linters
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CN86102407A (zh
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袁志平
林易风
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UNIT 88352 PLA
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UNIT 88352 PLA
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Abstract

一种能够解决污染的棉短绒制浆工艺，适用于采用棉短绒为原料的制浆造纸工业。传统制浆工艺，生成耗氧量很高的制浆黑液，形成严重污染。同时，对棉短绒化学处理是高温碱煮，使棉短绒的纤维强度及收率明显降低。本发明提供的工艺，将打半浆、筛选提到化学处理前，大部分杂质碎屑在化学处理时已被除去。化学处理采用碱性Ｈ↓［２］Ｏ↓［２］或碱性Ｈ↓［２］Ｏ↓［２］加氧气在７０℃～１００℃温度下煮漂。结果使制浆残液呈淡黄色，纸浆的纤维强度和收率均有提高。

Description

能够解决污染的棉短绒制浆工艺
一种棉短绒制浆新工艺，特别是一种能够解决污染的棉短绒制浆新工艺。适用于采用棉短绒为原料的制浆、造纸工业。
棉短绒制浆，主要是通过除去棉短绒中混有的棉籽壳、棉秆等杂物碎屑，再除去棉短绒本身含有的蜡质、有色物质等，而得到堪用纸浆。
传统的棉短绒制浆工艺，是将棉短绒在150℃的NaOH水溶液中蒸煮，然后打半浆，再用多级锥形除渣器进行筛选，最后用次氯酸盐进行漂白。这种制浆工艺，化学处理手段是高温碱煮，因而使棉短绒的纤维强度及收率明显降低。同时，直接用NaOH水溶液高温处理棉短绒原料，棉籽壳等杂质碎屑被碱溶解，生成耗氧量很高的制浆黑液。将这种黑液排入水系将形成严重污染，如对其治理，工程设备造价太高，并且经常性地运转费用也很高。
本发明的任务是提供一种新的制浆工艺。
这种新的工艺，是将打半浆、筛选提到化学处理之前进行。这样使大部分杂质碎屑在化学处理时已被除去。对筛选的纸浆进行化学处理是用碱性H2O2或碱性H2O2加氧气在70～100℃温度下煮漂，使溶入碱水的有机杂质经过氧化、降解，制浆残液呈淡黄色，同时棉短绒得到漂白。残液的污染负荷可以比传统工艺下降75～80%。
新工艺采用的化学处理条件，比较温和，使纸浆的纤维强度和收率均有提高。
实施例：
棉短绒原料：二道短绒含渣率15%，经打半浆，通过三级锥形除渣器处理后棉短绒含渣下降90%。
筛选后经净化的纸浆化学处理：
NaOH 7.5%
H2O2（100%） 3%
氧气 1.5%
加水后在70～100℃温度下煮漂2～3小时。经上述工艺处理后：
纸浆白度 可达到80°
制浆残液 呈淡黄色
污染负荷：耗氧量
COD≤50kg/吨（漂白浆）
BOD5≤15kg/吨（漂白浆）

Claims (2)

1、一种棉短绒制浆工艺，它通过去除棉短绒中的杂质和对棉短绒进行化学处理而得到堪用的纸浆，本发明的特征是首先对棉短绒进行打半浆、筛选，将大部分杂质去除后，再利用碱性H2O2或碱性H2O2加氧气对纸浆进行化学处理。
2、按照权利要求1所述的制浆工艺，其特征是用碱性H2O2或碱性H2O2加氧气在70～100℃温度下处理棉短绒。
CN86102407A 1986-04-12 1986-04-12 能够解决污染的棉短绒制浆工艺 Expired CN86102407B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN86102407A CN86102407B (zh) 1986-04-12 1986-04-12 能够解决污染的棉短绒制浆工艺

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CN86102407A CN86102407B (zh) 1986-04-12 1986-04-12 能够解决污染的棉短绒制浆工艺

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CN86102407A CN86102407A (zh) 1987-08-26
CN86102407B true CN86102407B (zh) 1987-09-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1077631C (zh) * 1998-03-23 2002-01-09 周湘洪 冷化制浆造纸的方法
CN102021854A (zh) * 2010-10-19 2011-04-20 薛润林 一种棉短绒制浆的方法
CN102392377A (zh) * 2011-10-28 2012-03-28 邹平福海科技发展有限公司 精制棉电催化氧化制浆方法和生产系统设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101638810B (zh) * 2009-08-20 2013-04-03 襄樊源力生物科技有限公司 一种高效环保节能生产精制棉的方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1077631C (zh) * 1998-03-23 2002-01-09 周湘洪 冷化制浆造纸的方法
CN102021854A (zh) * 2010-10-19 2011-04-20 薛润林 一种棉短绒制浆的方法
CN102392377A (zh) * 2011-10-28 2012-03-28 邹平福海科技发展有限公司 精制棉电催化氧化制浆方法和生产系统设备

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