CN109453563A - 一种耐高温耐腐蚀过滤材料及其制备方法 - Google Patents

一种耐高温耐腐蚀过滤材料及其制备方法 Download PDF

Info

Publication number
CN109453563A
CN109453563A CN201811170316.XA CN201811170316A CN109453563A CN 109453563 A CN109453563 A CN 109453563A CN 201811170316 A CN201811170316 A CN 201811170316A CN 109453563 A CN109453563 A CN 109453563A
Authority
CN
China
Prior art keywords
corrosion
temp
ptfe
layer
resistant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811170316.XA
Other languages
English (en)
Inventor
钱烨
胡圣武
黄燎辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Ruijie Filter Material Technology Co Ltd
Original Assignee
Zhejiang Ruijie Filter Material Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Ruijie Filter Material Technology Co Ltd filed Critical Zhejiang Ruijie Filter Material Technology Co Ltd
Priority to CN201811170316.XA priority Critical patent/CN109453563A/zh
Publication of CN109453563A publication Critical patent/CN109453563A/zh
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4318—Fluorine series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D04H1/4342—Aromatic polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0435—Electret
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

本发明公开一种耐高温耐腐蚀过滤材料，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。本发明还公开耐高温耐腐蚀过滤材料的制备方法，包括以下步骤：纤维开松‑梳理‑铺网‑针刺‑压光烧毛‑拉幅定型、浸渍‑将耐腐蚀材料过滤层和PTFE基布层针刺到一起‑将PTFE基布层和耐酸碱过滤层面对面粘结到一起‑在耐酸碱过滤层覆上PTFE膜。本发明的耐高温耐腐蚀过滤材料能有效过滤掉有害物质，并能经受化学气体的侵蚀。

Description

一种耐高温耐腐蚀过滤材料及其制备方法
技术领域
本发明涉及一种耐高温耐腐蚀过滤材料及其制备方法，属于过滤材料技术领域。
背景技术
垃圾焚烧产生的大气污染物中包含颗粒物、酸性气体、重金属及有机污染物；出于环境保护考虑，颗粒物及重金属进行综合处理并满足环保排放的标准，已成为环境保护研究中一块重要内容。
耐高温滤料常用的原材料主要有玻璃纤维、芳砜纶、芳纶纤维、聚酰亚胺纤维、聚苯硫醚纤维、聚四氟乙烯纤维等，这些纤维能耐受200-300℃的中高温烟气。但是这些纤维由于自身的缺点，在使用方面存在一定的局限性。
玻璃纤维耐磨性差，不耐折，不能满足环境复杂的高温粉尘过滤要求；芳砜纶的耐碱性稍差，在耐高温性及高温尺寸稳定性方面比nomex好；芳纶纤维具有良好的耐热化学性，能耐高浓度的有机酸，耐碱性稍差；缺点是会发生水解反应，当烟气中含有SO2且经常出现露点温度，相对于湿度大于10％的情况下，燃煤锅炉产生的烟气会大大缩短间位芳纶滤料的使用寿命。聚酰亚胺纤维具有很高的断裂强度，低伸长率，良好的热稳定性、不燃烧性和电绝缘性，但耐酸、抗水解性能稍差，耐碱性差，适合在低含硫量的烟气中使用。聚苯硫醚纤维耐腐蚀性仅次于聚四氟乙烯纤维纤维，但是他的耐氧化性差，在王水等溶液中易氧化；聚四氟乙烯纤维是滤料中耐化学腐蚀性俱佳的一种滤料，可耐受各种酸、碱及强氧化性的腐蚀(金属钠除外)，几乎不受其他物质侵蚀。
根据燃煤锅炉和垃圾燃烧除尘器的特点及工况要求，滤袋长期处于高温高浓度化学气体的特殊工况，选用普通的滤料是不可能满足其工作要求，容易造成滤袋腐蚀破损。达不到除尘效果。换袋频繁增加运行成本。
发明内容
本发明针对现有技术存在的不足，提供一种耐高温耐腐蚀过滤材料及其制备方法，能有效过滤掉有害物质，并能经受化学气体的侵蚀。
本发明解决上述技术问题的技术方案如下：一种耐高温耐腐蚀过滤材料，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。
本发明进一步设置为，所述耐腐蚀材料过滤层使用复合纤维，所述复合纤维包含质量分数35-45％的PPS和质量分数55-65％的PTFE，粗细为0.05-0.1mm。
本发明进一步设置为，所述耐高温耐腐蚀过滤材料克重为780±10g/m2。
本发明进一步设置为，所述PTFE基布层为100％PTFE，克重为130±10g/m2，径向强力≥1400N/(5*20cm)，纬向强力≥400N/(5*20cm)。
本发明进一步设置为，所述耐酸碱过滤层选用聚苯二甲酰苯二胺纤维纤维而成。
本发明还提供了上述耐高温耐腐蚀过滤材料的制备方法，包括以下步骤：
(1)纤维开松：通过开包机先将纤维打散，按生产工艺的配比，通过自动称重分配到粗开松机进行开松，由开松机风机将开松的纤维送到大仓混棉进行混合均匀后输送到精开松进行再次开松；
(2)梳理：将开松好的纤维通过储棉箱风机输送到气压棉箱喂入机送给梳理机进行分梳和成网输送给铺网机；
(3)铺网：是将梳理好的棉网通过输送碳帘输送进铺网机，通过铺网机将棉网折叠，送入预针刺；
(4)针刺：将铺网机送入的棉网进行预针刺后转入到第二台主针刺，通过主刺机的一正一反和不同的针刺频率进行反复针刺，达到设定的针刺密度；
(5)压光烧毛：针刺完工的滤料经过滤料烧毛机进行表面烧毛处理并将滤料的表面进行预轧光；
(6)拉幅定型、浸渍：烧毛完成的滤料通过浸渍机、压胶机传送到定型机烘箱进行烘干，保证表层化工得到深层处理，制得耐酸碱过滤层；
(7)将耐腐蚀材料过滤层和PTFE基布层针刺到一起；
(8)将PTFE基布层和耐酸碱过滤层面对面粘结到一起；
(9)在耐酸碱过滤层覆上PTFE膜。
本发明进一步设置为，所述设定的针刺密度为20-30(刺/cm2)。
本发明进一步设置为，预轧光温度为200-220℃。
综上所述，本发明具有以下有益效果：
(1)耐腐蚀材料过滤层使用PPS和PTFE，PTFE本身光滑抱合力差，将纤维带入基布中得到有效夹持，增强纤维层的抱合力。
(2)纤维在加工过程中容易产生静电，先把PTFE进行预开松，再用静电消除液进行防静电处理。防止纤维通过两次开松后产生强静电，给梳理造成困难，影响网层质量。
(3)后处理工艺是针对PPS和PTFE的不同材质，先进行200-220℃的高温热轧，提高两种不同纤维的紧密度后再进行PTFE浸渍渗透进入烘箱定型的方法。表面进行PTFE覆膜，增强滤袋的排放效果。
(4)本发明的耐高温耐腐蚀过滤材料断裂强力大，能长时间使用；过滤效果好，能进行有效过滤。
具体实施方式
下面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。
实施例1
一种耐高温耐腐蚀过滤材料，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。
其中，耐腐蚀材料过滤层使用复合纤维，复合纤维包含质量分数35％的PPS和质量分数55％的PTFE，粗细为0.05mm。耐高温耐腐蚀过滤材料克重为785g/m2。PTFE基布层为100％PTFE，克重为130g/m2，径向强力≥1400N/(5*20cm)，纬向强力≥400N/(5*20cm)。耐酸碱过滤层选用聚苯二甲酰苯二胺纤维纤维而成。
实施例2
一种耐高温耐腐蚀过滤材料，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。
其中，耐腐蚀材料过滤层使用复合纤维，复合纤维包含质量分数38％的PPS和质量分数60％的PTFE，粗细为0.06mm。耐高温耐腐蚀过滤材料克重为780±10g/m2。PTFE基布层为100％PTFE，克重为140g/m2，径向强力≥1400N/(5*20cm)，纬向强力≥400N/(5*20cm)。耐酸碱过滤层选用聚苯二甲酰苯二胺纤维纤维而成。
实施例3
一种耐高温耐腐蚀过滤材料，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。
其中，耐腐蚀材料过滤层使用复合纤维，复合纤维包含质量分数40％的PPS和质量分数65％的PTFE，粗细为0.07mm。耐高温耐腐蚀过滤材料克重为790g/m2。PTFE基布层为100％PTFE，克重为135g/m2，径向强力≥1400N/(5*20cm)，纬向强力≥400N/(5*20cm)。耐酸碱过滤层选用聚苯二甲酰苯二胺纤维纤维而成。
实施例4
一种耐高温耐腐蚀过滤材料，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。
其中，耐腐蚀材料过滤层使用复合纤维，复合纤维包含质量分数45％的PPS和质量分数62％的PTFE，粗细为0.08mm。耐高温耐腐蚀过滤材料克重为770g/m2。PTFE基布层为100％PTFE，克重为150g/m2，径向强力≥1400N/(5*20cm)，纬向强力≥400N/(5*20cm)。耐酸碱过滤层选用聚苯二甲酰苯二胺纤维纤维而成。
实施例5
一种耐高温耐腐蚀过滤材料，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。
其中，耐腐蚀材料过滤层使用复合纤维，复合纤维包含质量分数42％的PPS和质量分数58％的PTFE，粗细为0.1mm。耐高温耐腐蚀过滤材料克重为775g/m2。PTFE基布层为100％PTFE，克重为120g/m2，径向强力≥1400N/(5*20cm)，纬向强力≥400N/(5*20cm)。耐酸碱过滤层选用聚苯二甲酰苯二胺纤维纤维而成。
本发明还提供了耐高温耐腐蚀过滤材料的制备方法，包括以下步骤：
(1)纤维开松：通过开包机先将纤维打散，按生产工艺的配比，通过自动称重分配到粗开松机进行开松，然后用静电消除液进行防静电处理，由开松机风机将开松的纤维送到大仓混棉进行混合均匀后输送到精开松进行再次开松；
(2)梳理：将开松好的纤维通过储棉箱风机输送到气压棉箱喂入机送给梳理机进行分梳和成网输送给铺网机；
(3)铺网：是将梳理好的棉网通过输送碳帘输送进铺网机，通过铺网机将棉网折叠，送入预针刺；
(4)针刺：将铺网机送入的棉网进行预针刺后转入到第二台主针刺，通过主刺机的一正一反和不同的针刺频率进行反复针刺，达到设定的针刺密度20-30(刺/cm2)；
(5)压光烧毛：针刺完工的滤料经过滤料烧毛机进行表面烧毛处理并将滤料的表面进行预轧光，温度为200-220℃；
(6)拉幅定型、浸渍：烧毛完成的滤料通过浸渍机、压胶机传送到定型机烘箱进行烘干，保证表层化工得到深层处理，制得耐酸碱过滤层；
(7)将耐腐蚀材料过滤层和PTFE基布层针刺到一起；
(8)将PTFE基布层和耐酸碱过滤层面对面粘结到一起；
(9)在耐酸碱过滤层覆上PTFE膜。
本发明的耐高温耐腐蚀过滤材料主要特性包括：
(1)针对除尘器内部含有大量的SO2和不确定因素，很容易腐蚀滤袋，造成滤料失效，并且使滤袋本身破损，降低了滤袋使用寿命。本发明的耐高温耐腐蚀过滤材料对滤料进行改进，使其在耐温的前提下还能耐腐蚀，且做到温度要求等。
(2)耐高温耐腐蚀过滤材料经过严格的化工处理工艺，提升滤料本身耐酸、耐碱性能。滤料表面进行PTFE覆膜，做到烟气中的水和油不易停留在表面，有利于清灰，不易糊袋。用耐高温耐腐蚀过滤材料制成的滤袋，应用在燃煤锅炉和垃圾焚烧场合下，与普通滤料相比，具有使用寿命长，过滤效果好的优点。
滤料的过滤有三种状态，深层过滤、暂态过滤和表面过滤，本发明的耐高温耐腐蚀过滤材料主要是表面过滤。深层过滤：洁净的新滤袋，纤维的孔隙大，颗粒直接进入滤料的内部，堵塞纤维孔隙，使除尘器阻力上升，阻力的上升与滤料及粉尘的特性有关，复杂工况更是难处理粉尘。表面过滤在一定的过滤风速下颗粒很难进入滤料内部，在滤料迎层面堆积起来，形成致密粉尘层。这粉尘层起到过滤作用，而且能经受化学气体的侵蚀。
为了验证耐高温耐腐蚀过滤材料的性能，进行以下测试：
1、滤料强力和伸长性能的检测
强力特性检测，伸长率按GB/T3923.1的规定检测，准备能满足名义夹持长度达200㎜。宽度为50㎜的试样五条，分别将五条的一端夹紧固定，每条的另端加载40N，静置24h后卸载，取下试样并测量其长度，分别计算五条试样的伸长率，然后求其平均值。
2、滤料透气性检测
3、滤料阻力特性的检测
(1)洁净滤料阻力系数使用滤料静态性能测试仪检测。
(2)滤料的动态阻力、残余阻力利用滤料静态性能测试仪检测。
4、滤料滤尘性能检测
(1)滤料静态滤尘性能使用滤料静态性能测试仪检测。
(2)滤料动态滤尘性能使用滤料动态性能测试仪检测。
测得断裂强度：径向≥1150N，纬向≥1500N；
断裂伸长率：径向≤15％，纬向≤45％；
热收缩率(190℃24小时)：径向≤1％，纬向≤1％；
断裂强力保持率(190℃24小时)：径向≥100％，纬向≥100％；
除尘特性：除尘效率＞99.99％(试验最终阶段)；
透气度(m3/(m2*min))为1.8-1.9；
清尘特性：粉尘剥离＞74％(试验最终阶段)；第一个周期16分51秒开始，最后一个周期7分26秒统计。
所有关键指标均已达到技术任务书要求。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (8)

1.一种耐高温耐腐蚀过滤材料，其特征在于，包括四层结构，依次为PTFE保护膜层、耐酸碱过滤层、PTFE基布层、耐腐蚀材料过滤层。
2.根据权利要求1所述的耐高温耐腐蚀过滤材料，其特征在于，所述耐腐蚀材料过滤层使用复合纤维，所述复合纤维包含质量分数35-45％的PPS和质量分数55-65％的PTFE，粗细为0.05-0.1mm。
3.根据权利要求1所述的耐高温耐腐蚀过滤材料，其特征在于，所述耐高温耐腐蚀过滤材料克重为780±10g/m2。
4.根据权利要求1所述的耐高温耐腐蚀过滤材料，其特征在于，所述PTFE基布层为100％PTFE，克重为130±10g/m2，径向强力≥1400N/(5*20cm)，纬向强力≥400N/(5*20cm)。
5.根据权利要求1所述的耐高温耐腐蚀过滤材料，其特征在于，所述耐酸碱过滤层选用聚苯二甲酰苯二胺纤维纤维而成。
6.权利要求1-5任一项所述的耐高温耐腐蚀过滤材料的制备方法，其特征在于，包括以下步骤：
(1)纤维开松：通过开包机先将纤维打散，按生产工艺的配比，通过自动称重分配到粗开松机进行开松，由开松机风机将开松的纤维送到大仓混棉进行混合均匀后输送到精开松进行再次开松；
(2)梳理：将开松好的纤维通过储棉箱风机输送到气压棉箱喂入机送给梳理机进行分梳和成网输送给铺网机；
(3)铺网：是将梳理好的棉网通过输送碳帘输送进铺网机，通过铺网机将棉网折叠，送入预针刺；
(4)针刺：将铺网机送入的棉网进行预针刺后转入到第二台主针刺，通过主刺机的一正一反和不同的针刺频率进行反复针刺，达到设定的针刺密度；
(5)压光烧毛：针刺完工的滤料经过滤料烧毛机进行表面烧毛处理并将滤料的表面进行预轧光；
(6)拉幅定型、浸渍：烧毛完成的滤料通过浸渍机、压胶机传送到定型机烘箱进行烘干，保证表层化工得到深层处理，制得耐酸碱过滤层；
(7)将耐腐蚀材料过滤层和PTFE基布层针刺到一起；
(8)将PTFE基布层和耐酸碱过滤层面对面粘结到一起；
(9)在耐酸碱过滤层覆上PTFE膜。
7.根据权利要求6所述的耐高温耐腐蚀过滤材料的制备方法，其特征在于，所述设定的针刺密度为20-30(刺/cm2)。
8.根据权利要求6所述的耐高温耐腐蚀过滤材料的制备方法，其特征在于，预轧光温度为200-220℃。
CN201811170316.XA 2018-10-09 2018-10-09 一种耐高温耐腐蚀过滤材料及其制备方法 Pending CN109453563A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811170316.XA CN109453563A (zh) 2018-10-09 2018-10-09 一种耐高温耐腐蚀过滤材料及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811170316.XA CN109453563A (zh) 2018-10-09 2018-10-09 一种耐高温耐腐蚀过滤材料及其制备方法

Publications (1)

Publication Number Publication Date
CN109453563A true CN109453563A (zh) 2019-03-12

Family

ID=65607352

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811170316.XA Pending CN109453563A (zh) 2018-10-09 2018-10-09 一种耐高温耐腐蚀过滤材料及其制备方法

Country Status (1)

Country Link
CN (1) CN109453563A (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110141900A (zh) * 2019-05-16 2019-08-20 苏州海蓝环保科技有限公司 一种矿渣微粉过滤用滤料及其生产方法
CN111979643A (zh) * 2020-08-20 2020-11-24 南京际华三五二一环保科技有限公司 一种废旧滤袋制备耐热保温材料方法
CN112387008A (zh) * 2020-10-26 2021-02-23 安徽中电环保材料股份有限公司 一种抗氧化pps过滤材料及其制备工艺
CN114734697A (zh) * 2022-03-19 2022-07-12 晋江市港益纤维制品有限公司 一种网纱中底布的制作工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1895723A (zh) * 2006-06-22 2007-01-17 南京三五二一特种装备厂 作为迎尘面的氟纤维高温过滤材料及其制造方法
CN101804272A (zh) * 2010-04-20 2010-08-18 南京际华三五二一特种装备有限公司 一种燃煤电厂电袋结合项目专用复合滤料的制备方法
CN202087138U (zh) * 2011-05-23 2011-12-28 浙江宇邦滤材科技有限公司 一种耐水解、耐酸碱、耐氧化、耐高温的滤料
CN203281138U (zh) * 2013-03-07 2013-11-13 武汉金源环保科技工程设备有限公司 高温耐酸gs-1专用滤料
CN103691204A (zh) * 2013-12-18 2014-04-02 上海秋橙新材料科技有限公司 间位芳纶纤维复合耐高温过滤毡及其制备方法
CN105032036A (zh) * 2015-07-13 2015-11-11 上海婉静纺织科技有限公司 供暖锅炉用耐高温过滤材料及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1895723A (zh) * 2006-06-22 2007-01-17 南京三五二一特种装备厂 作为迎尘面的氟纤维高温过滤材料及其制造方法
CN101804272A (zh) * 2010-04-20 2010-08-18 南京际华三五二一特种装备有限公司 一种燃煤电厂电袋结合项目专用复合滤料的制备方法
CN202087138U (zh) * 2011-05-23 2011-12-28 浙江宇邦滤材科技有限公司 一种耐水解、耐酸碱、耐氧化、耐高温的滤料
CN203281138U (zh) * 2013-03-07 2013-11-13 武汉金源环保科技工程设备有限公司 高温耐酸gs-1专用滤料
CN103691204A (zh) * 2013-12-18 2014-04-02 上海秋橙新材料科技有限公司 间位芳纶纤维复合耐高温过滤毡及其制备方法
CN105032036A (zh) * 2015-07-13 2015-11-11 上海婉静纺织科技有限公司 供暖锅炉用耐高温过滤材料及其制备方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110141900A (zh) * 2019-05-16 2019-08-20 苏州海蓝环保科技有限公司 一种矿渣微粉过滤用滤料及其生产方法
CN111979643A (zh) * 2020-08-20 2020-11-24 南京际华三五二一环保科技有限公司 一种废旧滤袋制备耐热保温材料方法
CN112387008A (zh) * 2020-10-26 2021-02-23 安徽中电环保材料股份有限公司 一种抗氧化pps过滤材料及其制备工艺
CN114734697A (zh) * 2022-03-19 2022-07-12 晋江市港益纤维制品有限公司 一种网纱中底布的制作工艺
CN114734697B (zh) * 2022-03-19 2023-12-08 晋江市港益纤维制品有限公司 一种网纱中底布的制作工艺

Similar Documents

Publication Publication Date Title
CN109453563A (zh) 一种耐高温耐腐蚀过滤材料及其制备方法
CN104118178B (zh) 一种pps超细纤维复合滤料的制备方法
CN103816717B (zh) 一种用于袋式除尘的高温滤料生产工艺
CN101695615B (zh) 用于陶瓷窑炉烟气处理的复合针刺过滤袋
CN106582112B (zh) 一种半干法脱硫烟气净化滤料及其制备方法
CN107604532A (zh) 滤袋的面层材料、滤袋、烟气处理系统及处理方法
CN102166455B (zh) 一种耐高温硬挺化针刺毡滤材及其制造方法和应用
CN102061627A (zh) 一种耐酸碱阻燃耐高温复合毡制备方法
CN101805958B (zh) 聚四氟乙烯针刺毡及其制造方法
CN105709504A (zh) 水刺高效滤料及其制备方法
CN109954320A (zh) 一种防静电玄武岩针刺毡的制备工艺
CN102061626A (zh) 一种环保耐高温抗酸碱抗腐蚀pp复合毡制备方法
CN105544212A (zh) 一种工业烟尘滤料整理液以及滤料处理工艺
CN109289329A (zh) 一种水泥窑除尘过滤材料及其制备方法
CN105709499A (zh) 一种具有易清灰功能的芳纶耐高温滤布及其制备方法
CN203281138U (zh) 高温耐酸gs-1专用滤料
CN109514950A (zh) 一种高性能芳砜纶过滤材料及其制备方法
CN201171942Y (zh) 一种混合针刺过滤毡
CN113652799A (zh) 一种针刺除尘滤布的制备工艺方法
CN202724871U (zh) 耐热纤维过滤毡
CN203281136U (zh) 高温耐油gy-1专用滤料
CN205586674U (zh) 涂层水刺复合滤料
CN105688512A (zh) 水刺精密面层滤料及其制备方法
CN206566609U (zh) 一种有机纤维机织滤料
CN102319528A (zh) 酚醛纤维高温过滤除尘毡及其生产方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20190312