{"id":9941,"date":"2022-01-05T09:56:00","date_gmt":"2022-01-05T01:56:00","guid":{"rendered":"https:\/\/www.zonelenviro.com\/comment-determiner-le-rapport-air-tissu-en-fonction-des-conditions-de-fonctionnement-des-depoussiereurs\/"},"modified":"2026-04-20T13:08:25","modified_gmt":"2026-04-20T05:08:25","slug":"comment-determiner-le-rapport-air-tissu-en-fonction-des-conditions-de-fonctionnement-des-depoussiereurs","status":"publish","type":"post","link":"https:\/\/www.zonelenviro.com\/fr\/comment-determiner-le-rapport-air-tissu-en-fonction-des-conditions-de-fonctionnement-des-depoussiereurs\/","title":{"rendered":"Comment d\u00e9terminer le rapport air\/tissu en fonction des conditions de fonctionnement des d\u00e9poussi\u00e9reurs ?"},"content":{"rendered":"\t\t
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How to design the air\/cloth ratio according to the operation condition of the dust bag filter housing?<\/h2>
<\/div>

The end users sometimes are confused about the air\/cloth ratio design of the filter bag dust collector<\/a><\/span> manufacturers, because the same operation conditions are offered to different dust collector manufacturers the air\/cloth ratio may be different, some are designed from experience, and some according to your budget expected, some just offering a list simply for different kinds of dust collection, while what\u2019s the theory support for the air\/cloth ratio design? The following is the answer to this question from Zonel Filtech. <\/p>

Let\u2019s say the air\/cloth ratio design is Qt:
The Qt= Qn * C1*C2*C3*C4*C5<\/p>

Qn is the standard air\/cloth ratio, which is related to the particle type and coherence properties, basically:
The sublimation of ferrous & nonferrous metal, active carbon chooses 1.2m\/min;
The dust air from coke production, volatile residue, metal powders (polishing, etc.), oxidation of metal chooses 1.7m\/min;
The dust air of alumina, cement, coal, lime, and ores is 2.0m\/min.
So a similar kind of dust air can decide according to the above.<\/p>

C1 is the index of purging type:
I choose the pulse jet purging method:
Woven filter fabric dust bags<\/a><\/span>, C1 choose 1.0;
Nonwoven filter cloth dust bags<\/a><\/span>, C1 choose 1.1.
I choose the reverse blown purging plus mechanical shake, the C1 choose 0.1~0.85;
If the reverse blown purging only, the C1 choose 0.55~0.7.<\/p>

C2 is the index related to the inlet dust content:
If the inlet dust content such as at 20g\/m3, the C2 chooses 0.95;
If the inlet dust content such as at 40g\/m3, the C2 chooses 0.90;
If the inlet dust content such as at 60g\/m3, the C2 chooses 0.87;
If the inlet dust content such as at 80g\/m3, the C2 chooses 0.85;
If the inlet dust content such as at 100g\/m3, the C2 chooses 0.825;
If the inlet dust content such as at 150g\/m3, the C2 chooses about 0.80;<\/p>

C3 is the index related to the particle sizes\/ median diameter:
If the median diameter of the particle:
> 100 microns, choose 1.2~1.4;
100~50 micron, choose 1.1;
50~10 micron, choose 1.0;
10~3 micron, choose 0.9;
<3 micron, choose 0.9~0.7<\/p>

C4 is the index related to the dust air temperature:
For the dust air temperature at (degree C):
20, choose 1.0;
40, choose 0.9;
60, choose 0.84;
80, choose 0.78;
100, choose 0.75;
120, choose 0.73;
140, choose 0.72;
>160, can choose 0.70 or less some properly.<\/p>

C5 is the index related to the emission:
If the emission request is less than 30mg\/m3, the C5 chooses 1.0;
If the emission request is less than 10mg\/m3, the C5 chooses 0.95;<\/p>

For example:
Design for cement kiln dust collection, with Nomex nonwoven filter bags dust collector, operation temperature at 170 degrees C, inlet dust content is 50g\/m3, median particle size is 10 microns, emission request is less than 30mg\/m3.
So, the Qt=2*1.1*0.88*0.9*0.7*1=1.21m\/min.
When designing the DC, this air\/cloth ratio can be taken into consideration.<\/p>

Edited by ZONEL FILTECH<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

The end users sometimes are confused on the air\/cloth ratio design from the filter bag dust collector manufacturers, because the same operation condition offered to different dust collector manufacturers the air\/cloth ratio may different,<\/p>\n","protected":false},"author":1,"featured_media":9942,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[123],"tags":[],"class_list":["post-9941","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-du-secteur"],"_links":{"self":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts\/9941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/comments?post=9941"}],"version-history":[{"count":1,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts\/9941\/revisions"}],"predecessor-version":[{"id":9943,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/posts\/9941\/revisions\/9943"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/media\/9942"}],"wp:attachment":[{"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/media?parent=9941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/categories?post=9941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zonelenviro.com\/fr\/wp-json\/wp\/v2\/tags?post=9941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}