CN108940244A - 一种微波加热的蜂窝沸石吸附剂及其制备方法 - Google Patents
一种微波加热的蜂窝沸石吸附剂及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种微波加热的蜂窝沸石吸附剂及其制备方法,包括沸石蜂窝体,在沸石蜂窝体上设有骨架、微波吸波层、沸石吸附层,沸石蜂窝体,包括骨架,骨架材料选自堇青石、莫耐石,然后在骨架外层涂覆一层厚℃100~500微米的微波吸波层,通过向SiC添加B2O3、ZnO为掺杂材料,利用氧化铝氧化硅胶为粘结,微波吸波层材料包括氧化锌及碳化硅,在吸波层外表面涂有一层200~1000微米的沸石吸附层,沸石吸附层的质量百分比含量为:80~90%分子筛,2~5%SiO2,3~6%Al2O3以及5~10%SiC,微波加热的沸石蜂窝吸附材料,可以通过微波加热的方式,使沸石蜂窝体中的吸波层产生热量,快速提升沸石的温℃,脱附VOCs。
Description
技术领域
本发明涉及新材料技术领域,具体为一种微波加热的蜂窝沸石吸附剂。
背景技术
随着经济的快速发展和环境问题的日益突出,大气问题越来越严重。其中,苯系物、有机氯化物、氟里昂系列、有机酮、胺、醇、醚、酯、酸和石油烃化合物等挥发性有机物是造成环境污染的主要杀手。
VOCs的处理主要有回收与销毁两种方式。其中,回收法主要是利用吸附材料进行吸附,然后加热脱附形成高浓℃气体,再经冷凝回收。
VOCs的吸附材料主要是活性碳和沸石,而活性碳由于易燃不耐高温等特点,因此以沸石为主的吸附技术逐渐成为主流,尤其以沸石转轮为代表。 但是目前的沸石吸附材料主要通过热风来加热沸石,从而将VOCs脱除,但这种效率低能耗大。
目前采用的升温方法,使热风通过热扩散,将空气中的热量传递到沸石载体,使其升温,这种热传递效率低,升温速℃慢,为了加快升温速率,就需要加大热风量,浓缩比就低。
发明内容
本发明的目的在于提供一种采用微波加热可以快速提升沸石的温℃的一种微波加热的蜂窝沸石吸附剂,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种微波加热的蜂窝沸石吸附剂,包括沸石蜂窝体,所述沸石蜂窝体上设有骨架,所述骨架的外侧设有微波吸波层,微波吸波层厚100~500µm,所述微波吸波层的外侧设有沸石吸附层,沸石吸附层厚200~1000µm。
优选的,所述微波吸波层中含有10~25% B2O3,10~30% Al2O3,5~15% SiO2以及60~80%SiC。
优选的,所述微波吸波层中原料按重量百分比为10% B2O3,10% Al2O3,5% SiO2,60%SiC。
优选的,所述沸石吸附层中含有80~90% 分子筛, 2~5% SiO2,3~6%Al2O3以及5~10%SiC。
优选的,所述沸石吸附层中原料按重量百分比为80%分子筛, 2% SiO2,3%Al2O3,5~10%SiC。
优选的,所述微波吸波层的制备方法包括以下步骤:
A、将10~25% B2O3, 10~30% Al2O3, 5~15%SiO2以及60~80%SiC按比例混合;
B、然后添加相对其质量的2倍的水调成浆,调整pH为2~4;
C、通过研磨充分搅拌2小时,制得碳化硅粘合胶;
D、将制得的碳化硅粘合胶通过浸涂吸附在陶瓷骨架表面,用高压风枪吹除表面过多浆料;
E、然后使用130~180℃烘烤30~60min。
优选的,所述沸石吸附层的制备方法包括以下步骤:
A、将80~90% 分子筛, 2~5% SiO2,3~6%Al2O3以及5~10%SiC按比例混合;
B、然后添加相对其质量的1.5~3倍的水调成浆,调整pH为4~6;
C、过研磨充分搅拌2小时,制得沸石粘合胶;
D、制得沸石粘合胶通过浸涂吸附在上述吸波层的表面,用高压风枪吹除表面过多浆料;
E、然后130~180℃烘烤30~60min;
F、最后高温550~650℃烧结1~3h。
与现有技术相比,本发明的有益效果是:
(1)通过微波加热的方式,使沸石自身发热,将沸石孔道内吸附的VOCs进行脱除,采用微波加热可以快速提升沸石的温℃,提高对沸石吸附的VOCs的脱除效率,同时降低脱除VOCs的能耗;
(2)沸石蜂窝体外表涂附的微波吸波层与沸石吸附层,有效增强沸石蜂窝体对VOCs的吸附能力。
附图说明
图1为本发明沸石蜂窝体结构示意图;
图2为本发明蜂窝体结构示意图。
图中:1、沸石蜂窝体;2、骨架;3、微波吸波层;4、沸石吸附层。
具体实施方式
下面将结合本发明实施例中的附图,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。
请参阅图1或图2,本发明提供一种技术方案:一种微波加热的蜂窝沸石吸附剂,包括沸石蜂窝体1,沸石蜂窝体1上设有骨架2,骨架2的外侧设有微波吸波层3,微波吸波层3厚100~500µm,微波吸波层3的外侧设有沸石吸附层4,沸石吸附层4厚200~1000µm。
微波吸波层3中含有10~25% B2O3,10~30% Al2O3,5~15% SiO2以及60~80%SiC,微波吸波层3中原料按重量百分比为10% B2O3,10% Al2O3,5% SiO2,60%SiC,在进行微波吸波层3制备的时候首先将10~25% B2O3, 10~30% Al2O3, 5~15% SiO2以及60~80%SiC按比例混合,然后添加相对其质量的2倍的水调成浆,调整pH为2~4,通过研磨充分搅拌2小时,制得碳化硅粘合胶,将制得的碳化硅粘合胶通过浸涂吸附在陶瓷骨架表面,用高压风枪吹除表面过多浆料,再将涂覆有微波吸波层3的沸石蜂窝体1放在130~180℃烘烤30~60min,将干燥涂覆在骨架2的外表。
一种微波加热的蜂窝沸石吸附剂,其特征在于:所述微波吸波层3的制备方法包括以下步骤:
A、将10~25% B2O3, 10~30% Al2O3, 5~15% SiO2以及60~80%SiC按比例混合;
B、然后添加相对其质量的2倍的水调成浆,调整pH为2~4;
C、通过研磨充分搅拌2小时,制得碳化硅粘合胶;
D、将制得的碳化硅粘合胶通过浸涂吸附在陶瓷骨架表面,用高压风枪吹除表面过多浆料;
E、然后使用130~180℃烘烤30~60min。
沸石吸附层4中含有80~90% 分子筛, 2~5% SiO2,3~6%Al2O3以及5~10%SiC,沸石吸附层4中原料按重量百分比为80%分子筛, 2% SiO2,3%Al2O3,5~10%SiC,在制备沸石吸附层4的时候,将80~90% 分子筛, 2~5% SiO2,3~6%Al2O3以及5~10%SiC按比例混合,然后添加相对其质量的1.5~3倍的水调成浆,调整pH为4~6,过研磨充分搅拌2小时,制得沸石粘合胶,制得沸石粘合胶通过浸涂吸附在上述吸波层的表面,用高压风枪吹除表面过多浆料,然后130~180℃烘烤30~60min,最后高温550~650℃烧结1~3h,从而将沸石吸附层4涂覆在微波吸波层3的外表。
一种微波加热的蜂窝沸石吸附剂,其特征在于:所述沸石吸附层4的制备方法包括以下步骤:
A、将80~90% 分子筛, 2~5% SiO2,3~6%Al2O3以及5~10%SiC按比例混合;
B、然后添加相对其质量的1.5~3倍的水调成浆,调整pH为4~6;
C、过研磨充分搅拌2小时,制得沸石粘合胶;
D、制得沸石粘合胶通过浸涂吸附在上述吸波层的表面,用高压风枪吹除表面过多浆料;
E、然后130~180℃烘烤30~60min;
F、最后高温550~650℃烧结1~3h。
本发明在沸石蜂窝体1的外部涂附微波吸波层3与沸石吸附层4,有效增强沸石蜂窝体对VOCs的吸附能力,并且该发明中采用微波加热的方式,使沸石自身发热,将沸石孔道内吸附的VOCs进行脱除,采用微波加热可以快速提升沸石的温℃,提高对沸石吸附的VOCs的脱除效率,同时降低脱除VOCs的能耗,并且该蜂窝涂层是附着在蜂窝体的外表层,对于蜂窝体的形状可以是平板结构,也可以是方孔结构。
本发明的有益效果是:
(1)通过微波加热的方式,使沸石自身发热,将沸石孔道内吸附的VOCs进行脱除,采用微波加热可以快速提升沸石的温℃,提高对沸石吸附的VOCs的脱除效率,同时降低脱除VOCs的能耗;
(2)沸石蜂窝体外表涂附的微波吸波层与沸石吸附层,有效增强沸石蜂窝体对VOCs的吸附能力。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (7)
1.一种微波加热的蜂窝沸石吸附剂,包括沸石蜂窝体(1),其特征在于:所述沸石蜂窝体(1)上设有骨架(2),所述骨架(2)的外侧设有微波吸波层(3),微波吸波层(3)厚100~500µm,所述微波吸波层(3)的外侧设有沸石吸附层(4),沸石吸附层(4)厚200~1000µm。
2.根据权利要求1所述的一种微波加热的蜂窝沸石吸附剂,其特征在于:所述微波吸波层(3)中含有10~25% B2O3,10~30% Al2O3,5~15% SiO2以及60~80%SiC。
3.根据权利要求1所述的一种微波加热的蜂窝沸石吸附剂,其特征在于:所述微波吸波层(3)中原料按重量百分比为10% B2O3,10% Al2O3,5% SiO2,60%SiC。
4.根据权利要求1所述的一种微波加热的蜂窝沸石吸附剂,其特征在于:所述沸石吸附层(4)中含有80~90% 分子筛, 2~5% SiO2,3~6%Al2O3以及5~10%SiC。
5.根据权利要求1所述的一种微波加热的蜂窝沸石吸附剂,其特征在于:所述沸石吸附层(4)中原料按重量百分比为80%分子筛, 2% SiO2,3%Al2O3,5~10%SiC。
6.根据权利要求1所述的一种微波加热的蜂窝沸石吸附剂,其特征在于:所述微波吸波层(3)的制备方法包括以下步骤:
A、将10~25% B2O3, 10~30% Al2O3, 5~15% SiO2以及60~80%SiC按比例混合;
B、然后添加相对其质量的2倍的水调成浆,调整pH为2~4;
C、通过研磨充分搅拌2小时,制得碳化硅粘合胶;
D、将制得的碳化硅粘合胶通过浸涂吸附在陶瓷骨架表面,用高压风枪吹除表面过多浆料;
E、然后使用130~180℃烘烤30~60min。
7.根据权利要求1所述的一种微波加热的蜂窝沸石吸附剂,其特征在于:所述沸石吸附层(4)的制备方法包括以下步骤:
A、将80~90% 分子筛, 2~5% SiO2,3~6%Al2O3以及5~10%SiC按比例混合;
B、然后添加相对其质量的1.5~3倍的水调成浆,调整pH为4~6;
C、过研磨充分搅拌2小时,制得沸石粘合胶;
D、制得沸石粘合胶通过浸涂吸附在上述吸波层的表面,用高压风枪吹除表面过多浆料;
E、然后130~180℃烘烤30~60min;
F、最后高温550~650℃烧结1~3h。
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