CN110860276A - 一种二噁英与重金属吸附剂及其制备方法 - Google Patents
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Abstract
本发明公开了一种二噁英与重金属吸附剂及其制备方法,包括膨润土、木炭、石墨烯、木质素、小苏打和水,所述膨润土、木炭、石墨烯、木质素、小苏打和水各组分含量为,膨润土70‑75份,木炭5‑10份,石墨烯2‑5份,木质素2‑5份,小苏打10‑15份,水2‑5份,涉及污染物吸附剂技术领域。该二噁英与重金属吸附剂及其制备方法,本吸附剂吸附效率高,同时可以处理其他酸性气体,较传统吸附剂价格低廉,使用温度区间宽,吸附效率高,除吸附二噁英、重金属等有害物质之外,协同处理其他酸性气体,成本较低,国产程度高,应用前景广阔,且还具有脱除部分酸性气体的效果,大大的提高了吸附剂的实用性,可进行大规模的推广使用,实用性较强。
Description
技术领域
本发明涉及污染物吸附剂技术领域,具体为一种二噁英与重金属吸附剂及其制备方法。
背景技术
随着世界各国现代工业化进程的发展,产生的工业废物、生活垃圾越来越多,对废弃物和垃圾采用焚烧处理已成为目前各国处理废弃物最主要和最有效的技术之一。但垃圾在焚烧过程中不可避免地会产生大量污染物,如颗粒物、酸性气体、重金属以及二噁英等。这些污染物对人体健康存在着极大的危害,其中尤以二噁英的毒害最大,去除难度也最高。二噁英包括210多种化合物,这类物质性质稳定,难溶于水,但可以溶于大部分有机溶剂,是无色无味的脂溶性物质,容易在生物体内积累。由于自然界的微生物和水解作用对二噁英的分子结构影响较小,因此,环境中的二噁英很难自然降解消除。二噁英的最大危害是具有不可逆的“三致”毒性,即致畸、致癌、致突变。国际癌症研究中心已将它列为一级致癌物。此外,二噁英还会引起头痛、失聪、新生儿畸形等,并具有长期效应,会导致染色体损伤、心力衰竭、内分泌失调等。因此,垃圾焚烧过程中特殊污染物的控制,尤其是二噁英的控制,已成为发展垃圾焚烧技术迫切需要解决的问题。
目前,焚烧后烟气中的二噁英和重金属的处理主要采用催化降解法和物理吸附法,催化降解法是指利用催化剂在一定温度下将二噁英分解为小分子甚至二氧化碳和水,可以彻底解决二噁英污染。这一方法在欧美等国家的试用效果很好,但催化剂价格昂贵,投资高、运行成本高,限制了在我国的发展,物理吸附法是指用吸附剂或降低温度来减少二噁英排放。通过增湿降温或喷洒石灰浆的方法,可以降低烟气温度,改变二噁英在气固相的分配比,将二噁英部分转移到灰相或水相当中去,与布袋除尘系统联合使用,可以有效去除二噁英。活性炭可以有效吸附烟气中的二噁英及其他污染物。在烟气中喷入活性炭或多孔吸附剂吸附,配合布袋除尘器捕集的方法可以大大提高二噁英的去除效率。采用活性炭固定床或使用活性炭纤维毡吸附也是去除二噁英的重要方法,且活性炭可以通过高温再生。但物理吸附法并不能根除二噁英,且废水和废渣去除困难。
发明内容
(一)解决的技术问题
针对现有技术的不足,本发明提供了一种二噁英与重金属吸附剂及其制备方法,解决了催化剂价格昂贵,投资高、运行成本高,限制了在我国的发展,并且物理吸附法并不能根除二噁英,且废水和废渣去除困难的问题。
(二)技术方案
为实现以上目的,本发明通过以下技术方案予以实现:一种二噁英与重金属吸附剂,包括膨润土、木炭、石墨烯、木质素、小苏打和水,所述膨润土、木炭、石墨烯、木质素、小苏打和水各组分含量为,膨润土70-75份,木炭5-10份,石墨烯2-5份,木质素2-5份,小苏打10-15份,水2-5份。
进一步地,一种二噁英与重金属吸附剂的制备方法,包括以下步骤:S1:取80-85份膨润土置于混合皿中,同时取木炭5-10份、石墨烯2-5份和木质素2-5份置于膨润土中进行混合搅拌,再取2-5份水溶液,将水溶液缓慢添加至膨润土中,实现水溶液对膨润土的浸湿;S2:取小苏打10-15份,将小苏打制成饱和溶液,将小苏打的饱和溶液倒入被水浸湿的膨润土中,搅拌均匀;S3:将混合配置完成的吸附剂放置到烘干箱中烘干;S4:将烘干完成的吸附剂放置到研磨机中进行研磨,研磨完成后,将吸附剂颗粒取出,装袋,完成生产。
进一步地,所述木炭、石墨烯和木质素混合搅拌之前应当进行充分粉碎。
进一步地,所述水溶液缓慢添加至膨润土中时,应当利用搅拌棒进行搅拌,确保水溶液浸湿膨润土的充分性。
进一步地,所述小苏打的饱和溶液倒入被水浸湿的膨润土中时的搅拌时间应当控制在5-10分钟,同时应当按照固定方向进行搅拌。
进一步地,所述吸附剂在烘干箱中烘干的时间不得低于2小时,同时烘干的温度应当控制在180摄氏度,并采用恒温烘干。
进一步地,所述吸附剂研磨时,应当控制颗粒大小在500目。
(三)有益效果
本发明具有以下有益效果:该二噁英与重金属吸附剂及其制备方法,通过所述膨润土、木炭、石墨烯、木质素、小苏打和水各组分含量为,膨润土70-75份,木炭5-10份,石墨烯2-5份,木质素2-5份,小苏打10-15份,水2-5份,取80-85份膨润土置于混合皿中,同时取木炭5-10份、石墨烯2-5份和木质素2-5份置于膨润土中进行混合搅拌,再取2-5份水溶液,将水溶液缓慢添加至膨润土中,实现水溶液对膨润土的浸湿,取小苏打10-15份,将小苏打制成饱和溶液,将小苏打的饱和溶液倒入被水浸湿的膨润土中,搅拌均匀,将混合配置完成的吸附剂放置到烘干箱中烘干,将烘干完成的吸附剂放置到研磨机中进行研磨,研磨完成后,将吸附剂颗粒取出,装袋,完成生产,本吸附剂吸附效率高,同时可以处理其他酸性气体,较传统吸附剂价格低廉,使用温度区间宽,吸附效率高,除吸附二噁英、重金属等有害物质之外,协同处理其他酸性气体,成本较低,国产程度高,应用前景广阔,现有活性炭八千元/吨,而我本吸附剂配方价格约为四千元左右,费用为现有国内主流价格的一半,且还具有脱除部分酸性气体的效果,大大的提高了吸附剂的实用性,可进行大规模的推广使用。
当然,实施本发明的任一产品并不一定需要同时达到以上所述的所有优点。
具体实施方式
下面将结合本发明实施例中的方法,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在本发明的描述中,需要理解的是,术语“开孔”、“上”、“下”、“厚度”、“顶”、“中”、“长度”、“内”、“四周”等指示方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的组件或元件必须具有特定的方位,以特定的方位构造和操作,因此不能理解为对本发明的限制。
本发明实施例提供一种技术方案:一种二噁英与重金属吸附剂,包括膨润土、木炭、石墨烯、木质素、小苏打和水,木炭、石墨烯和木质素可以有效的对重金属元素进行吸附,便于去除重金属元素,所述膨润土、木炭、石墨烯、木质素、小苏打和水各组分含量为,膨润土70-75份,木炭5-10份,石墨烯2-5份,木质素2-5份,小苏打10-15份,水2-5份,一种二噁英与重金属吸附剂的制备方法,包括以下步骤:S1:取80-85份膨润土置于混合皿中,同时取木炭5-10份、石墨烯2-5份和木质素2-5份置于膨润土中进行混合搅拌,再取2-5份水溶液,将水溶液缓慢添加至膨润土中,实现水溶液对膨润土的浸湿;S2:取小苏打10-15份,将小苏打制成饱和溶液,将小苏打的饱和溶液倒入被水浸湿的膨润土中,搅拌均匀;S3:将混合配置完成的吸附剂放置到烘干箱中烘干;S4:将烘干完成的吸附剂放置到研磨机中进行研磨,研磨完成后,将吸附剂颗粒取出,装袋,完成生产,所述木炭、石墨烯和木质素混合搅拌之前应当进行充分粉碎,所述水溶液缓慢添加至膨润土中时,应当利用搅拌棒进行搅拌,确保水溶液浸湿膨润土的充分性,所述小苏打的饱和溶液倒入被水浸湿的膨润土中时的搅拌时间应当控制在5-10分钟,同时应当按照固定方向进行搅拌,所述吸附剂在烘干箱中烘干的时间不得低于2小时,同时烘干的温度应当控制在180摄氏度,并采用恒温烘干,所述吸附剂研磨时,应当控制颗粒大小在500目。
下面对本申请文件的实施例进行说明;
原料配比过程中,可根据不同的酸性情况对膨润土、小苏打和水各组分含量进行调整,如果酸性较大,可取膨润土60-65份、木炭5-10份,石墨烯2-5份,木质素2-5份、小苏打15-20份和水4-8份。
实际生产制造中,水溶液浸湿膨润土时可采用机械搅拌,并且控制温度在常温下,搅拌时间不低于5分钟,小苏打的饱和溶液倒入被水浸湿的膨润土中时的搅拌时间应当根据实际生产量进行改变,生产量越大,搅拌时间应当越长。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为所述的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。
Claims (7)
1.一种二噁英与重金属吸附剂,包括膨润土、木炭、石墨烯、木质素、小苏打和水,其特征在于:所述膨润土、木炭、石墨烯、木质素、小苏打和水各组分含量为,膨润土70-75份,木炭5-10份,石墨烯2-5份,木质素2-5份,小苏打10-15份,水2-5份。
2.一种二噁英与重金属吸附剂的制备方法,其特征在于:包括以下步骤:S1:取80-85份膨润土置于混合皿中,同时取木炭5-10份、石墨烯2-5份和木质素2-5份置于膨润土中进行混合搅拌,再取2-5份水溶液,将水溶液缓慢添加至膨润土中,实现水溶液对膨润土的浸湿;S2:取小苏打10-15份,将小苏打制成饱和溶液,将小苏打的饱和溶液倒入被水浸湿的膨润土中,搅拌均匀;S3:将混合配置完成的吸附剂放置到烘干箱中烘干;S4:将烘干完成的吸附剂放置到研磨机中进行研磨,研磨完成后,将吸附剂颗粒取出,装袋,完成生产。
3.根据权利要求2所述的一种二噁英与重金属吸附剂及其制备方法,其特征在于:所述木炭、石墨烯和木质素混合搅拌之前应当进行充分粉碎。
4.根据权利要求2所述的一种二噁英与重金属吸附剂及其制备方法,其特征在于:所述水溶液缓慢添加至膨润土中时,应当利用搅拌棒进行搅拌,确保水溶液浸湿膨润土的充分性。
5.根据权利要求2所述的一种二噁英与重金属吸附剂及其制备方法,其特征在于:所述小苏打的饱和溶液倒入被水浸湿的膨润土中时的搅拌时间应当控制在5-10分钟,同时应当按照固定方向进行搅拌。
6.根据权利要求2所述的一种二噁英与重金属吸附剂及其制备方法,其特征在于:所述吸附剂在烘干箱中烘干的时间不得低于2小时,同时烘干的温度应当控制在180摄氏度,并采用恒温烘干。
7.根据权利要求2所述的一种二噁英与重金属吸附剂及其制备方法,其特征在于:所述吸附剂研磨时,应当控制颗粒大小在500目。
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