CN106010693B - 一种褐煤水煤浆的添加剂 - Google Patents
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Abstract
本发明公开了一种褐煤水煤浆的添加剂，该添加剂以重量份计包括：分散剂25‑45份，萘醛缩聚物25‑45份，氢氧化钠10‑30份，流动性改良剂5‑20份。本发明添加剂比其他类似产品能够提高水煤浆浆体浓度2‑5个百分点，表观粘度降低200mpa/s左右，价格同其他类似产品相当。本产品合成工艺简单，可操作性强，无须特种设备即可组织生产，具有良好的社会和经济效益。
Description
技术领域
本发明涉及煤化工技术领域，更具体涉及一种褐煤水煤浆的添加剂。
背景技术
水煤浆是一种新型煤基流体洁净环保燃料，在国家洁净煤计划中被列为重点高科技发展技术，在中国能源发展计划中是具有十分重要的战略意义。水煤浆添加剂是水煤浆生产过程中必需的重要助剂，特别是高浓度、低粘度、良好流动性及稳定性的水煤浆的制备，添加剂的作用尤为关键。
我国褐煤资源丰富，但褐煤煤质较差，内部存在许多毛细孔，并含有较多的脂肪烃类物质和含氧官能团，以及少量的芳香烃类物质。内水含量高是褐煤的重要特征之一。为此，采用褐煤制浆，成浆性差。常规的煤浆添加剂很难满足制褐煤浆的要求。目前，褐煤普遍存在的煤浆浓度偏低45％-50％，表观粘度在1400-2800之间，造成企业能耗高，经济效益差的特点。
发明内容
(一)要解决的技术问题
本发明要解决的技术问题就是如何提高褐煤水煤浆的浓度，并降低褐煤水煤浆的粘度，而提供一种褐煤水煤浆的添加剂。
(二)技术方案
为了解决上述技术问题，本发明提供了一种褐煤水煤浆的添加剂，所述添加剂以重量份计包括(所用原料除特别说明均为市售购得)：分散剂25-45份，萘醛缩聚物25-45份，氢氧化钠10-30份，流动性改良剂5-20份。
优选地，所述添加剂以重量份计包括：分散剂30-40份，萘醛缩聚物30-40份，氢氧化钠15-25份，流动性改良剂8-15份。
优选地，该添加剂以重量份计包括：分散剂35份，萘醛缩聚物35份，氢氧化钠20份，流动性改良剂10份。
优选地，所述的分散剂为改性磺化脂肪酰胺。
优选地，所述的流动性改良剂为双烷基磺酸盐。
优选地，所述的改性磺化脂肪酰胺按下述方法制备：按重量份将180-220份水、1-3份多聚磷酸钠和120-140份亚硫酸钠混合，搅拌均匀后加入丙酮80-100份，升温至70-90℃，缓慢加入310-330份重量百分比浓度为35-40％的甲醛水溶液，将温度控制在85-95℃，反应1-3小时后滴加90-110份烯丙基酰胺，继续反应2-5小时，降温，调PH至8.5-9.5，即得。
优选地，所述的改性磺化脂肪酰胺按下述方法制备：按重量份将200份水、2份多聚磷酸钠和130份亚硫酸钠混合，搅拌均匀后加入丙酮90份，升温至80℃，缓慢加入318份重量百分比浓度为35-40％的甲醛水溶液，将温度控制在90℃，反应2小时后滴加100份烯丙基酰胺，继续反应3小时，降温，调PH至9，即得。
优选地，所述的萘醛缩聚物按下述方法制备：按重量份将200-210份萘中加入220-230份浓硫酸，在150-170℃下磺化1-3小时后降低磺化产物温度至80-90℃，滴加230-240份重量百分比浓度为35-40％甲醛水溶液，温度控制在95-105℃。缩合时间为2-3小时，反应后调PH至9-11，即得。
优选地，所述的萘醛缩聚物按下述方法制备：按重量份将205份萘中加入225份浓硫酸，在160℃下磺化2小时后降低磺化产物温度至85℃，滴加235份重量百分比浓度为35-40％甲醛水溶液，温度控制在100℃。缩合时间为2.5小时，反应后调PH至10，即得。
本发明还提供了所述褐煤水煤浆的添加剂的应用，所述添加剂应用于制备褐煤水煤浆，其添加的重量百分比为0.5-1.0％。
(三)有益效果
本发明添加剂比其他类似产品能够提高水煤浆浆体浓度2-5个百分点，表观粘度降低200mpa/s左右，价格同其他类似产品相当。本产品合成工艺简单，可操作性强，无须特种设备即可组织生产，具有良好的社会和经济效益。
具体实施方式
下面结合实施例对本发明的实施方式作进一步详细描述。以下实施例用于说明本发明，但不能用来限制本发明的范围。
本发明是涉及煤化工领域的一种针对褐煤、低阶质煤制备水煤浆的添加剂。
实施例1
本实施例褐煤水煤浆添加剂的组成为：分散剂35kg，萘醛缩聚物35kg，氢氧化钠20kg，流动性改良剂10kg；将上述组分混合，搅拌均匀，即得。
实施例2
本实施例褐煤水煤浆添加剂的组成为：分散剂30kg，萘醛缩聚物30kg，氢氧化钠15kg，流动性改良剂8kg；将上述组分混合，搅拌均匀，即得。
实施例3
本实施例褐煤水煤浆添加剂的组成为：分散剂40kg，萘醛缩聚物40kg，氢氧化钠25kg，流动性改良剂15kg；将上述组分混合，搅拌均匀，即得。
实施例4
本实施例褐煤水煤浆添加剂的组成为：分散剂25kg，萘醛缩聚物25kg，氢氧化钠10kg，流动性改良剂5kg；将上述组分混合，搅拌均匀，即得。
实施例5
本实施例褐煤水煤浆添加剂的组成为：分散剂45kg，萘醛缩聚物45kg，氢氧化钠30kg，流动性改良剂20kg；将上述组分混合，搅拌均匀，即得。
试验例1
称取某公司褐煤，其指标分析如下：全水分为20.1％；内水份为12.12％；PH：7.89；将上述褐煤制备水煤浆，其中添加本发明实施例1添加剂，其添加量的重量百分数为0.6％；测定制得的水煤浆浓度为53％，表观粘度为1100mpa/s。
以上实施方式仅用于说明本发明，而非对本发明的限制。尽管参照实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，对本发明的技术方案进行各种组合、修改或者等同替换，都不脱离本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围当中。
Claims (8)
1.一种褐煤水煤浆的添加剂，其特征在于，该添加剂以重量份计包括：分散剂25-45份，萘醛缩聚物25-45份，氢氧化钠10-30份，流动性改良剂5-20份；
所述的分散剂为改性磺化脂肪酰胺，其制备方法如下：按重量份将180-220份水、1-3份多聚磷酸钠和120-140份亚硫酸钠混合，搅拌均匀后加入丙酮80-100份，升温至70-90℃，缓慢加入310-330份重量百分比浓度为35-40%的甲醛水溶液，将温度控制在85-95℃，反应1-3小时后滴加90-110份烯丙基酰胺，继续反应2-5小时，降温，调PH至8.5-9.5，即得。
2.根据权利要求1所述的褐煤水煤浆的添加剂，其特征在于，该添加剂以重量份计包括：分散剂30-40份，萘醛缩聚物30-40份，氢氧化钠15-25份，流动性改良剂8-15份。
3.根据权利要求1所述的褐煤水煤浆的添加剂，其特征在于，该添加剂以重量份计包括：分散剂35份，萘醛缩聚物35份，氢氧化钠20份，流动性改良剂10份。
4.根据权利要求1-3任一项所述的褐煤水煤浆的添加剂，其特征在于，所述的流动性改良剂为双烷基磺酸盐。
5.根据权利要求1所述的褐煤水煤浆的添加剂，其特征在于，所述的改性磺化脂肪酰胺按下述方法制备：按重量份将200份水、2份多聚磷酸钠和130份亚硫酸钠混合，搅拌均匀后加入丙酮90份，升温至80℃，缓慢加入318份重量百分比浓度为35-40%的甲醛水溶液，将温度控制在90℃，反应2小时后滴加100份烯丙基酰胺，继续反应3小时，降温，调PH至9，即得。
6.根据权利要求1-3任一项所述的褐煤水煤浆的添加剂，其特征在于，所述的萘醛缩聚物按下述方法制备：按重量份将200-210份萘中加入220-230份浓硫酸，在150-170℃下磺化1-3小时后降低磺化产物温度至80-90℃，滴加230-240份重量百分比浓度为35-40%的甲醛水溶液，温度控制在95-105℃；缩合时间为2-3小时，反应后调PH 至9-11，即得。
7.根据权利要求6所述的褐煤水煤浆的添加剂，其特征在于，所述的萘醛缩聚物按下述方法制备：按重量份将205份萘中加入225份浓硫酸，在160℃下磺化2小时后降低磺化产物温度至85℃，滴加235份重量百分比浓度为35-40%的甲醛水溶液，温度控制在100℃；缩合时间为2.5小时，反应后调PH 至10，即得。
8.权利要求1-7任一项所述的褐煤水煤浆的添加剂的应用，其特征在于，所述添加剂应用于制备褐煤水煤浆，所述添加剂的添加的重量百分比为0.5-1.0%。
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