CN106238067A - 脱硝脱voc催化剂 - Google Patents
脱硝脱voc催化剂 Download PDFInfo
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- CN106238067A CN106238067A CN201610750325.0A CN201610750325A CN106238067A CN 106238067 A CN106238067 A CN 106238067A CN 201610750325 A CN201610750325 A CN 201610750325A CN 106238067 A CN106238067 A CN 106238067A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 57
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 40
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 20
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 claims description 20
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- 239000012752 auxiliary agent Substances 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 13
- 239000004014 plasticizer Substances 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000314 lubricant Substances 0.000 claims description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000005187 foaming Methods 0.000 claims description 9
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 6
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 5
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 5
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 4
- 239000005751 Copper oxide Substances 0.000 claims description 4
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 229910000431 copper oxide Inorganic materials 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- JHJUUEHSAZXEEO-UHFFFAOYSA-M sodium;4-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=C(S([O-])(=O)=O)C=C1 JHJUUEHSAZXEEO-UHFFFAOYSA-M 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000001652 electrophoretic deposition Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 230000005070 ripening Effects 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims 1
- 229920002545 silicone oil Polymers 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 7
- 238000013517 stratification Methods 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 229910003076 TiO2-Al2O3 Inorganic materials 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 229910052720 vanadium Inorganic materials 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- NCWQJOGVLLNWEO-UHFFFAOYSA-N methylsilicon Chemical compound [Si]C NCWQJOGVLLNWEO-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000006101 laboratory sample Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Abstract
本发明涉及一种脱硝脱VOC催化剂,属于环保催化剂领域。本发明催化剂的各组分之间形成Mo‑V‑W/TiO2‑Al2O3体系,在活性组分Mo、V、W以及载体TiO2‑Al2O3的作用下实现同时脱硝脱VOC的功能,能有效精简尾气过滤排放设备的结构,降低环保成本。此外,本发明具备高抗尘干扰能力,在无需频繁停机清理积灰的基础上,仍能发挥最大的过滤性能,令催化剂的老化速度均一,滤除能力强且使用寿命长。
Description
技术领域
本发明涉及一种脱硝脱VOC催化剂及其制备方法,属于滤清污染气体的催化剂领域。
背景技术
随着我国经济的发展,我国煤能源消耗量以及机动车的数量大幅度增加,造成空气中各种污染物含量也在迅速上升。经过几十年的努力,我国在控制粉尘以及二氧化硫污染方面已经得到一定的成功,但是VOC和氮氧化物的污染尚未得到控制。因此,如何有效的控制VOC和氮氧化物的排放成为目前环保领域的焦点。
传统的催化剂,只能对VOC或者氮氧化物进行单向滤除,导致过滤混合烟气时,所需设备构造复杂,增加生产成本。并且,传统的催化剂依托蜂窝状催化剂进行过滤作业,这种催化剂的结构简单,然而一旦有大颗粒物进入催化剂内部,整条蜂窝条孔将发生阻塞,无法进行正常过滤反应。催化剂在高污染环境中作业,积尘是难免的,如何在无需频繁停机清理积灰的基础上,仍能令其发挥最大的过滤性能,是本领域技术人员需要解决的难题。
本发明提出了一种脱硝脱VOC催化剂,能同时滤除VOC和氮氧化物,所制得催化剂价格低,化学和热稳定性好好,活性也较高,并且抗中毒性能高。此外,本发明具备高抗尘干扰能力,在无需频繁停机清理积灰的基础上,仍能发挥最大的过滤性能,令催化剂的老化速度均一,滤除能力强且使用寿命长。
发明内容
为解决高温催化剂的实际使用过程中遇到的问题,本发明提供了一种脱硝脱VOC催化剂,能同时滤除VOC和氮氧化物,所制得催化剂价格低,化学和热稳定性好好,活性也较高,并且抗中毒性能高。此外,本发明具备高抗尘干扰能力,在无需频繁停机清理积灰的基础上,仍能发挥最大的过滤性能,令催化剂的老化速度均一,滤除能力强且使用寿命长。
本发明是通过以下技术方案实现的:
一种脱硝脱VOC催化剂,其特征在于包括基材和活性成分,所述基材的加入量为60-70份;基材包括二氧化钛、硅粉和γ-氧化铝;所述基材中二氧化钛、硅粉和γ-氧化铝按质量比为5:2:3。
所述活性成分由下述原料制得,所述份数均为重量份:
五氧化二钒 0.3份;
二氧化锆 0.15份;
氧化铜 0.12份;
氧化锰 0.1份;
氧化铈 0.1份。
还包括助剂,所述助剂的添加量为20-30份;助剂包括三氧化钨和三氧化钼;三氧化钨和三氧化钼的质量比为1:1。
还包括粘结剂,所述粘结剂的添加量为2-8份;粘结剂包括苏州土和碳酸钙;上述苏州土和碳酸钙的质量比为2:1。
还包括增塑剂,所述增塑剂的添加量为3-5份;增塑剂包括羟甲基纤维素和硅藻泥;上述羟甲基纤维素和硅藻泥的质量比为3:2。
还包括挤出润滑剂,挤出润滑剂的施加量为1.5-3份;所述挤出润滑剂包括甲基硅油。
本发明所述的一种脱硝脱VOC催化剂,包括如下制备步骤:
1)将基材在80-120℃真空烘箱内干燥6-8h,降温至30-60℃,得到预处理基材;
2)称取活性成分和助剂,加入混料釜,将20-25L去离子水逐渐加入混料釜,并开启搅拌,以100-200r/min的速度搅拌2-3h后,加入步骤(1)中预处理基材,继续搅拌2-3h;
3)将步骤(2)的制得物,放入马弗炉,在500-700℃下煅烧4-6h;
4)将步骤(3)的制得物加入粘结剂、增塑剂和挤出润滑剂进行混炼,直至将物料混炼均匀;
5)将混炼出来的物料,熟化24-48h后,加入到过滤预挤出中挤出,过滤除去物料中杂质;
6)将过滤预挤出后的物料,通过模具整体挤出成型,并按照规定的长度,将上述成品进行切割成分段体,在每个分段体的两端进行半球形内凹式切削加工,令每个分段体的两端形成内凹的半球面;
7)两个相邻的分段体之间嵌入交联球体催化剂,即制得成品。
步骤7)中所述的交联球体催化剂的制备方法为将孔径为1-3mm的发泡金属加工成球形,用电泳沉积法在发泡金属的孔内施镀一层功能助剂材料,所述功能助剂材料的厚度小于0.5mm。
所述发泡金属为泡沫镍。
所述功能助剂材料由下述原料制得,所述份数均为重量份:
γ-氧化铝 20-30份;
五氧化二钒 1-3份;
三氧化钨 10-15份;
三氧化钼 10-12份;
碳酸钡或碳酸钙 2-8份;
硅藻泥 3-5份;
吐温-60 1-3份;
十二烷基苯磺酸钠 2-3份;
聚四氟乙烯粉末 4-7份。
本发明所具有的有益效果是:
1、氧化铝和纳米二氧化钛载体本身具有较高的比表面积,在此基础上添加造孔剂硅粉,能够令基材具有适合的孔结构和吸水率,可以提高载体的表面积,有利于催化剂活性成分分散,以提高催化剂的活性和寿命。
2、催化剂的各组分之间形成Mo-V-W/TiO2-Al2O3体系,在活性组分Mo、V、W 以及载体TiO2-Al2O3的作用下实现同时脱硝脱VOC的功能,能有效精简尾气过滤排放设备的结构,降低环保成本。
3、加入稀土氧化物可以提高催化剂的耐热性,起到稳定晶格结构和防止体积收缩的双重作用。氧化铈能增大催化剂的储氧量,氧化锆能够增大催化剂活性成分的分散度,二者结合能够协同作用令催化剂的饱和吸附量增大,整体提升催化剂的催化效率和能力。
4、在相邻的两个蜂窝状分段体之间嵌入交联球体催化剂,交联球体催化剂在同步过滤的同时能够起到高效热传导和多通管的作用。脱销脱VOC催化剂均需要在较高的温度条件下才能具有高反应活性,然而,烟气刚排放出时的温度并不能保持太久,随着烟气在催化剂中运动,温度逐渐减低。而泡沫金属均有极高的热传导效率,能够充分吸收烟气排出伊始时携带的热量,令催化剂前端和后端均匀受热,有利于提高脱销脱VOC的转化率。
此外,由于催化剂在高尘环境中作业,一旦分段体的一条蜂窝孔被阻塞,烟气也可以从过交联球体催化剂的多通管路进入下一相邻分段体中,令滤孔的阻塞率大为降低。并且,烟气在催化剂中的运动轨迹本身也不均匀,交联球体催化剂还能起到均匀分散烟气的作用,能在无需频繁停机清理积灰的基础上,仍能令其发挥最大的过滤性能,延长催化剂的整体使用寿命。
具体实施方式
下面将结合具体实施例对本发明做进一步说明,具体实施例不限制本发明。
一种脱硝脱VOC催化剂,包括基材和活性成分,所述基材的加入量为60-70份;基材包括二氧化钛、硅粉和γ-氧化铝;所述基材中二氧化钛、硅粉和γ-氧化铝按质量比为5:2:3。
所述活性成分由下述原料制得,所述份数均为重量份:
五氧化二钒 0.3份;
二氧化锆 0.15份;
氧化铜 0.12份;
氧化锰 0.1份;
氧化铈 0.1份。
还包括助剂,所述助剂的添加量为20-30份;助剂包括三氧化钨和三氧化钼;三氧化钨和三氧化钼的质量比为1:1。
还包括粘结剂,所述粘结剂的添加量为2-8份;粘结剂包括苏州土和碳酸钙;上述苏州土和碳酸钙的质量比为2:1。
还包括增塑剂,所述增塑剂的添加量为3-5份;增塑剂包括羟甲基纤维素和硅藻泥;上述羟甲基纤维素和硅藻泥的质量比为3:2。
还包括挤出润滑剂,挤出润滑剂的施加量为1.5-3份;所述挤出润滑剂包括甲基硅油。
在具体实施例中的各成分及用量见下表:
成分 | 实施例一 | 实施例二 | 实施例三 |
基材 | 60份 | 65份 | 70份 |
五氧化二钒 | 0.3份 | 0.3份 | 0.3份 |
二氧化锆 | 0.15份 | 0.15份 | 0.15份 |
氧化铜 | 0.12份 | 0.12份 | 0.12份 |
氧化锰 | 0.1份 | 0.1份 | 0.1份 |
氧化铈 | 0.1份 | 0.1份 | 0.1份 |
助剂 | 20份 | 25份 | 30份 |
粘结剂 | 2份 | 6份 | 8份 |
增塑剂 | 3份 | 4份 | 5份 |
挤出润滑剂 | 1.5份 | 2份 | 3份 |
本发明所述的一种脱硝脱VOC催化剂,包括如下制备步骤:
1)将基材在80-120℃真空烘箱内干燥6-8h,降温至30-60℃,得到预处理基材;
2)称取活性成分和助剂,加入混料釜,将20-25L去离子水逐渐加入混料釜,并开启搅拌,以100-200r/min的速度搅拌2-3h后,加入步骤(1)中预处理基材,继续搅拌2-3h;
3)将步骤(2)的制得物,放入马弗炉,在500-700℃下煅烧4-6h;
4)将步骤(3)的制得物加入粘结剂、增塑剂和挤出润滑剂进行混炼,直至将物料混炼均匀;
5)将混炼出来的物料,熟化24-48h后,加入到过滤预挤出中挤出,过滤除去物料中杂质;
6)将过滤预挤出后的物料,通过模具整体挤出成型,并按照规定的长度,将上述成品进行切割成分段体,在每个分段体的两端进行半球形内凹式切削加工,令每个分段体的两端形成内凹的半球面;
7)两个相邻的分段体之间嵌入交联球体催化剂,即制得成品。
步骤7)中所述的交联球体催化剂的制备方法为将孔径为1-3mm的发泡金属加工成球形,用电泳沉积法在发泡金属的孔内施镀一层功能助剂材料,所述功能助剂材料的厚度小于0.5mm。
所述发泡金属为泡沫镍。
所述功能助剂材料由下述原料制得,所述份数均为重量份:
γ-氧化铝 20-30份;
五氧化二钒 1-3份;
三氧化钨 10-15份;
三氧化钼 10-12份;
碳酸钡或碳酸钙 2-8份;
硅藻泥 3-5份;
吐温-60 1-3份;
十二烷基苯磺酸钠 2-3份;
聚四氟乙烯粉末 4-7份。
功能助剂材料在具体实施例中的各成分及用量见下表:
成分 | 实施例一 | 实施例二 | 实施例三 |
γ-氧化铝 | 20份 | 25份 | 30份 |
五氧化二钒 | 1份 | 1.5份 | 3份 |
三氧化钨 | 10份 | 13份 | 15份 |
三氧化钼 | 10份 | 11份 | 12份 |
碳酸钡或碳酸钙 | 2份 | 5份 | 8份 |
硅藻泥 | 3份 | 4份 | 5份 |
吐温-60 | 1份 | 1.5份 | 3份 |
十二烷基苯磺酸钠 | 2份 | 2.5份 | 3份 |
聚四氟乙烯粉末 | 4份 | 5份 | 7份 |
上述实施例的实验结果如下:
实验样品 | 脱销率(%) | VOC脱除率(%) |
实施例一 | 97 | 97 |
实施例二 | 98 | 97.1 |
实施例三 | 97.5 | 98 |
上述实验结果证明,本发明的使用性能良好,能有效脱除烟气中的硝和VOC,适宜在业界推官普及。
Claims (10)
1.一种脱硝脱VOC催化剂,其特征在于包括基材和活性成分,所述基材的加入量为60-70份;基材包括二氧化钛、硅粉和γ-氧化铝;所述基材中二氧化钛、硅粉和γ-氧化铝按质量比为5:2:3。
2.如权利要求1所述的一种脱硝脱VOC催化剂,其特征在于:所述活性成分由下述原料制得,所述份数均为重量份:
五氧化二钒 0.3份;
二氧化锆 0.15份;
氧化铜 0.12份;
氧化锰 0.1份;
氧化铈 0.1份。
3.如权利要求2所述的一种脱硝脱VOC催化剂,其特征在于:还包括助剂,所述助剂的添加量为20-30份;助剂包括三氧化钨和三氧化钼;三氧化钨和三氧化钼的质量比为1:1。
4.如权利要求3所述的一种脱硝脱VOC催化剂,其特征在于:还包括粘结剂,所述粘结剂的添加量为2-8份;粘结剂包括苏州土和碳酸钙;上述苏州土和碳酸钙的质量比为2:1。
5.如权利要求4所述的一种脱硝脱VOC催化剂,其特征在于:还包括增塑剂,所述增塑剂的添加量为3-5份;增塑剂包括羟甲基纤维素和硅藻泥;上述羟甲基纤维素和硅藻泥的质量比为3:2。
6.如权利要求5所述的一种脱硝脱VOC催化剂,其特征在于:还包括挤出润滑剂,挤出润滑剂的施加量为1.5-3份;所述挤出润滑剂包括甲基硅油。
7.如权利要求6所述的一种脱硝脱VOC催化剂,其特征在于包括如下制备步骤:
1)将基材在80-120℃真空烘箱内干燥6-8h,降温至30-60℃,得到预处理基材;
2)称取活性成分和助剂,加入混料釜,将20-25L去离子水逐渐加入混料釜,并开启搅拌,以100-200r/min的速度搅拌2-3h后,加入步骤(1)中预处理基材,继续搅拌2-3h;
3)将步骤(2)的制得物,放入马弗炉,在500-700℃下煅烧4-6h;
4)将步骤(3)的制得物加入粘结剂、增塑剂和挤出润滑剂进行混炼,直至将物料混炼均匀;
5)将混炼出来的物料,熟化24-48h后,加入到过滤预挤出中挤出,过滤除去物料中杂质;
6)将过滤预挤出后的物料,通过模具整体挤出成型,并按照规定的长度,将上述成品进行切割成分段体,在每个分段体的两端进行半球形内凹式切削加工,令每个分段体的两端形成内凹的半球面;
7)两个相邻的分段体之间嵌入交联球体催化剂,即制得成品。
8.如权利要求7所述的一种脱硝脱VOC催化剂,其特征在于:步骤7)中所述的交联球体催化剂的制备方法为将孔径为1-3mm的发泡金属加工成球形,用电泳沉积法在发泡金属的孔内施镀一层功能助剂材料,所述功能助剂材料的厚度小于0.5mm。
9.如权利要求7所述的一种脱硝脱VOC催化剂,其特征在于:所述发泡金属为泡沫镍。
10.如权利要求9所述的一种脱硝脱VOC催化剂,其特征在于:所述功能助剂材料由下述原料制得,所述份数均为重量份:
γ-氧化铝 20-30份;
五氧化二钒 1-3份;
三氧化钨 10-15份;
三氧化钼 10-12份;
碳酸钡或碳酸钙 2-8份;
硅藻泥 3-5份;
吐温-60 1-3份;
十二烷基苯磺酸钠 2-3份;
聚四氟乙烯粉末 4-7份。
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