{"id":825,"date":"2026-10-05T01:52:53","date_gmt":"2026-10-04T17:52:53","guid":{"rendered":"https:\/\/anchor-filter.com\/flue-gas-filtration\/"},"modified":"2026-10-07T12:23:03","modified_gmt":"2026-10-07T04:23:03","slug":"%d8%aa%d8%b1%d8%b4%d9%8a%d8%ad-%d8%ba%d8%a7%d8%b2-%d8%a7%d9%84%d9%85%d8%af%d8%a7%d8%ae%d9%86","status":"publish","type":"page","link":"https:\/\/anchor-filter.com\/ar\/flue-gas-filtration\/","title":{"rendered":"\u062a\u0631\u0634\u064a\u062d \u063a\u0627\u0632 \u0627\u0644\u0645\u062f\u0627\u062e\u0646: \u0643\u064a\u0641\u064a\u0629 \u062a\u0646\u0638\u064a\u0641 \u0627\u0644\u0639\u0627\u062f\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a \u0627\u0644\u0633\u0627\u062e\u0646 \u0641\u0648\u0642 260\u00b0C"},"content":{"rendered":"<h2>Flue Gas Filtration: How to Clean Hot Industrial Exhaust Above 260\u00b0C<\/h2>\n<div style=\"background:#F0FDF4;border:1px solid #BBF7D0;border-radius:8px;padding:16px 20px;margin:0 0 24px;\">\n<strong>Key takeaways<\/strong><\/p>\n<ul style=\"margin:8px 0 0;\">\n<li>Flue gas filtration removes dust, acid gases, NOx and dioxins from industrial exhaust before the stack \u2014 the technology choice is decided first by gas temperature.<\/li>\n<li>Above roughly 260\u00b0C, fabric bags fail and the classic answer is an ESP plus a chain of reactors; a rigid ceramic fiber filter handles 600\u00b0C continuously (1,000\u00b0C peak) and captures &gt;99.9% of dust in one vessel.<\/li>\n<li>In its catalytic grade, the same ceramic element also destroys NOx (up to 95%) and dioxins (up to 99.5% TEQ), collapsing filter, scrubber and SCR tower into a single unit.<\/li>\n<li>Measured plant data: a 120,000 m\u00b3\/h float glass furnace holds dust at 4 mg\/Nm\u00b3, NOx at 36 mg\/Nm\u00b3 and SO\u2082 at 35 mg\/Nm\u00b3 at the outlet.<\/li>\n<\/ul>\n<\/div>\n<p><strong>Contents<\/strong>: <a href=\"#what\">What is flue gas filtration<\/a> \u00b7 <a href=\"#pollutants\">What must be removed<\/a> \u00b7 <a href=\"#technologies\">Technology comparison<\/a> \u00b7 <a href=\"#temperature\">Why temperature decides<\/a> \u00b7 <a href=\"#ceramic\">Ceramic fiber filtration<\/a> \u00b7 <a href=\"#design\">System design<\/a> \u00b7 <a href=\"#applications\">Applications<\/a> \u00b7 <a href=\"#data\">Measured data<\/a> \u00b7 <a href=\"#faq\">FAQ<\/a><\/p>\n<p>Flue gas filtration is the removal of particulate and gaseous pollutants from industrial exhaust before it reaches the chimney. If your process gas leaves a kiln, furnace, boiler or incinerator at 300\u2013600\u00b0C, the filtration decision is different from a standard baghouse specification: fabric media is already past its limit, and every degree you cool the gas to protect it is energy you pay to move and then lose. This guide is written for plant engineers and EPC teams specifying hot gas cleaning \u2014 it compares the three realistic technology routes, explains where ceramic fiber filtration fits, and shows measured outlet data from operating plants.<\/p>\n<h2 id=\"what\">What Is Flue Gas Filtration?<\/h2>\n<p>Flue gas filtration is the stage of an exhaust system that captures particulate matter \u2014 dust, ash, soot and condensable aerosols \u2014 from combustion or process gas. In a wider sense it also covers the removal of gaseous pollutants (SOx, NOx, HCl, HF, dioxins) that regulations treat together with dust at the stack. A complete flue gas filtration system therefore combines a particulate barrier with, where the permit requires it, acid-gas neutralization and NOx destruction.<\/p>\n<p>The term is often used loosely for the whole gas cleaning train. In this guide we use it precisely: the filtration stage is the barrier that stops particles; everything else \u2014 quench towers, scrubbers, SCR reactors \u2014 exists either to protect that barrier or to do the chemistry the barrier cannot.<\/p>\n<h2 id=\"pollutants\">What Needs to Be Removed from Flue Gas<\/h2>\n<p>Four pollutant families drive the specification of any flue gas filtration system. Each has a different capture mechanism, which is why the classic answer is a chain of separate units \u2014 and why an integrated element changes the economics.<\/p>\n<table style=\"width:100%;border-collapse:collapse;font-size:14px;color:#54595F;margin:0 0 16px;\">\n<thead>\n<tr>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Pollutant<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Typical sources<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Classic removal unit<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">In a ceramic fiber system<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Dust \/ particulate (PM)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">All combustion and mineral processes<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Baghouse or ESP<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Captured on the tube surface at &gt;99.9%<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Acid gases (SOx, HCl, HF)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Coal, waste, glass, metallurgy<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Wet or semi-dry scrubber<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Dry sorbent reacts on the filter cake \u2014 no sewage<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">NOx<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">High-temperature combustion<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Separate SCR tower<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Catalytic grade reduces NOx inside the tube wall, up to 95%<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Dioxins (PCDD\/F)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Waste incineration, metallurgy<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Activated carbon injection<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Catalytic destruction up to 99.5% (TEQ) in the same element<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Emission limits for these pollutants are set by frameworks such as the EU Industrial Emissions Directive (2010\/75\/EU) and national standards like China&#8217;s GB 4915 for cement \u2014 the permit text, not the equipment catalogue, is where a specification should start.<\/p>\n<h2 id=\"technologies\">Main Flue Gas Filtration Technologies Compared<\/h2>\n<p>Three technologies dominate particulate removal in industrial flue gas. They differ less in efficiency than in what they force you to build around them.<\/p>\n<table style=\"width:100%;border-collapse:collapse;font-size:14px;color:#54595F;margin:0 0 16px;\">\n<thead>\n<tr>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Factor<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Fabric bag filter<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Electrostatic precipitator<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Ceramic fiber filter<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Continuous temperature<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Up to ~260\u00b0C (fabric limit)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Wide, but drifts with gas conditions<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">600\u00b0C continuous \/ 1,000\u00b0C peak<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Collection efficiency<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">99.5\u201399.9% with stable cake; dips after each pulse<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Weak on sub-micron and high-resistivity dust<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">&gt;99.9% at 1 \u03bcm, outlet &lt; 5 mg\/Nm\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Gas-phase removal<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">None<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">None<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Catalytic grade: NOx up to 95%, dioxins up to 99.5% (TEQ)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Service life (hot, acidic duty)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">1\u20133 years<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Long, but skilled high-voltage maintenance<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">5+ years with written warranty<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">What it forces upstream<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Quench \/ dilution air above 260\u00b0C<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">SCR + scrubber downstream for NOx and acid gas<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">Dry sorbent injection only, when acid gases require it<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Below 260\u00b0C with easy dust, a baghouse remains the lowest-cost answer and no honest supplier should tell you otherwise. The interesting territory is above the fabric limit, where the baghouse needs protection and the ESP needs companions. For the element-level economics of the first two columns, see our <a href=\"https:\/\/anchor-filter.com\/ceramic-filter-vs-bag-filter\/\">ceramic filter vs bag filter<\/a> analysis.<\/p>\n<h2 id=\"temperature\">Why Temperature Decides Everything<\/h2>\n<p>Every flue gas filtration specification starts at one number: the continuous gas temperature at the filter inlet. Below roughly 260\u00b0C, polymer and fiberglass felts survive and the choice is economic. Above it, fabric fails by melting, blinding or embrittlement \u2014 and the traditional fix is to cool the gas with dilution air, a heat exchanger or a water quench.<\/p>\n<p>Cooling is not free. Dilution air increases the gas volume the fan must move; a quench adds a tower, water treatment and a condensation risk at every cold spot; a heat exchanger adds pressure drop and fouling duty. Worst of all, the heat you remove to protect the filter is heat the process can no longer recover. In hot duty the filtration question is really: how much of the plant do you want to redesign around a fabric limit?<\/p>\n<p>A rigid ceramic fiber filter tube removes that trade. It operates continuously at 600\u00b0C with peaks to 1,000\u00b0C, so the gas arrives at the filter at process temperature and leaves for waste heat recovery with its energy intact. The cooling stage, its fan power and its footprint simply disappear from the flowsheet.<\/p>\n<h2 id=\"ceramic\">Ceramic Fiber Flue Gas Filtration: One Vessel for Dust, NOx and Dioxins<\/h2>\n<p>The element is a rigid, self-supporting tube vacuum-formed from alumina-silicate ceramic fiber, with a porosity above 80% and a controlled 3\u20135 \u03bcm fiber diameter. Dust-laden gas passes through the porous wall; particles stop on the outer surface; a 0.4\u20130.7 MPa pulse-jet releases the cake as intact sheets. Because the ceramic body itself is the barrier \u2014 not a dust cake on fabric \u2014 collection efficiency stays above 99.9% independent of the cleaning cycle, and outlet dust holds below 5 mg\/Nm\u00b3. The full mechanism is covered in our <a href=\"https:\/\/anchor-filter.com\/principle\/\">hot gas filtration principle<\/a> guide.<\/p>\n<p>The catalytic grade carries a V\u2082O\u2085-TiO\u2082 catalyst inside the tube wall. Dust is captured on the outer surface before it can reach the catalyst, so the catalyst sees only clean gas \u2014 this is what eliminates the catalyst poisoning and channel blinding that plague conventional SCR reactors in dusty service. Within its 170\u2013300\u00b0C reaction window the catalytic element delivers up to 95% NOx reduction and up to 99.5% (TEQ) dioxin destruction, while acid gases are neutralized by dry sorbent injected upstream and captured on the filter cake. One vessel replaces the baghouse, the scrubber and the SCR tower. Details are on the <a href=\"https:\/\/anchor-filter.com\/catalytic-ceramic-fiber-filter\/\">catalytic ceramic fiber filter<\/a> page; for dedusting-only duty, see the standard <a href=\"https:\/\/anchor-filter.com\/non-catalyst-ceramic-fiber-filter\/\">ceramic fiber filter tube<\/a>.<\/p>\n<p>There are honest boundaries. Sustained HF above 5 ppm and phosphoric acid mist attack the fiber; free alkali requires sorbent dosing upstream; moisture must stay below 20% by volume; and a catalytic section only works if the gas genuinely sits in its temperature window. A supplier who does not ask for your gas analysis before quoting is guessing.<\/p>\n<h2 id=\"design\">Flue Gas Filtration System Design: The Four Numbers That Matter<\/h2>\n<p>Whether the answer is a baghouse, an ESP or a ceramic system, the sizing inputs are the same four: the temperature profile (continuous, peak, and how long peaks last), the dust loading in g\/Nm\u00b3 with its particle size distribution, the gas chemistry (HF, H\u2083PO\u2084, free alkali, SO\u2082), and the moisture content relative to the acid dew point. Every premature failure we have seen in 40+ installations traces back to one of these four being assumed rather than measured.<\/p>\n<p>From those four numbers the engineering follows: face velocity of 2\u20135 cm\/s sets the element count (a standard \u03c6150 \u00d7 \u03c6110 \u00d7 3,000 mm element offers about 1.41 m\u00b2 of filter area), and the pressure-drop budget \u2014 300 Pa clean at 1 m\/min, 900\u20131,500 Pa for the complete system \u2014 is checked against the ID fan curve. The step-by-step procedure, including the chemistry boundaries and the purchase-order checklist, is in our <a href=\"https:\/\/anchor-filter.com\/ceramic-filter-selection-guide\/\">filter element selection guide<\/a>. For retrofitting an existing baghouse, the survey and commissioning sequence is in the <a href=\"https:\/\/anchor-filter.com\/baghouse-retrofit-ceramic-filters\/\">baghouse retrofit checklist<\/a>.<\/p>\n<h2 id=\"applications\">Where Ceramic Flue Gas Filtration Is Already Running<\/h2>\n<p>The reference base covers the duties where hot, dirty or chemically aggressive gas defeats fabric media: cement kiln tail and clinker cooler lines, container and float glass furnaces, municipal and industrial waste incinerators, biomass and RDF boilers, non-ferrous metallurgy and industrial boilers. Industry-by-industry fit, including the cases where ceramic is not the answer, is mapped on our <a href=\"https:\/\/anchor-filter.com\/applications\/\">ceramic fiber filter applications<\/a> page.<\/p>\n<p>Two examples frame the range. On a 2,500 t\/d cement clinker line in Shandong, retrofitted in 2019, ceramic tubes replaced failing glass fiber bags and have held emissions below 3 mg\/Nm\u00b3 for over four years at 850\u00b0C continuous operation. At a 750 t\/d municipal waste-to-energy plant in Guangzhou, the catalytic system consolidated baghouse, acid scrubber and SCR reactor into one vessel.<\/p>\n<h2 id=\"data\">Measured Performance in Operating Plants<\/h2>\n<p>The figures below are measured inlet and outlet values from operating installations \u2014 not laboratory projections. Customer names are withheld under confidentiality agreements.<\/p>\n<table style=\"width:100%;border-collapse:collapse;font-size:14px;color:#54595F;margin:0 0 16px;\">\n<thead>\n<tr>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Plant type<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Gas volume<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">NOx in \u2192 out<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">SO\u2082 in \u2192 out<\/th>\n<th style=\"padding:8px;border:1px solid #ddd;text-align:left;background:#f7f7f7\">Dust in \u2192 out<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Float glass furnace, low-temperature DeNOx (Sichuan)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">45,000 m\u00b3\/h<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">3,364 \u2192 11 mg\/m\u00b3<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">168 \u2192 6 mg\/m\u00b3<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">865 \u2192 4 mg\/m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Glass furnace, mid-temperature DeNOx (Anhui)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">120,000 m\u00b3\/h<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">2,554 \u2192 36 mg\/m\u00b3<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">1,050 \u2192 35 mg\/m\u00b3<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">967 \u2192 4 mg\/m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #ddd\">Marine diesel engine test rig (Shanghai)<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">7,289 m\u00b3\/h<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">3,045 \u2192 80 mg\/m\u00b3<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">\u2014<\/td>\n<td style=\"padding:8px;border:1px solid #ddd\">15.7 \u2192 2.2 mg\/m\u00b3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Full test reports, porosity and pore-diameter documentation are published on our <a href=\"https:\/\/anchor-filter.com\/performance\/\">performance &amp; test reports<\/a> page, and batch-level verification (ISO 9001:2015 production, third-party inspection by SGS, BV or T\u00dcV) is available for any order.<\/p>\n<h2 id=\"faq\">Frequently Asked Questions About Flue Gas Filtration<\/h2>\n<h3>What is the difference between flue gas filtration and flue gas treatment?<\/h3>\n<p>Filtration is the particulate-removal stage \u2014 the barrier that captures dust and ash. Treatment is the wider chain that may add desulfurization, denitrification and dioxin control. A ceramic fiber system performs both in one vessel: filtration on the tube surface, gas-phase chemistry inside the catalytic wall.<\/p>\n<h3>Can flue gas be filtered without cooling it first?<\/h3>\n<p>Yes, with the right media. Fabric bags require cooling above roughly 260\u00b0C, but rigid ceramic fiber filter tubes operate continuously at 600\u00b0C and tolerate peaks to 1,000\u00b0C. The gas is filtered at process temperature and its heat remains available for downstream recovery.<\/p>\n<h3>How efficient is ceramic flue gas filtration?<\/h3>\n<p>Collection efficiency exceeds 99.9% for particles of 1 \u03bcm and above, with outlet dust below 5 mg\/Nm\u00b3. The catalytic grade additionally removes up to 95% of NOx, up to 95% of SOx with dry sorbent, up to 97% of HCl and up to 99.5% of dioxins (TEQ).<\/p>\n<h3>When is an electrostatic precipitator the better choice?<\/h3>\n<p>When the dust has favourable electrical resistivity, the gas is already cool, no gas-phase removal is required, and an ESP is already installed and healthy. Above 260\u00b0C with high-resistivity dust or a NOx permit, ceramic filtration is usually the smaller and simpler answer.<\/p>\n<h3>What does a flue gas filtration system cost to operate?<\/h3>\n<p>Operating cost is dominated by fan power against 900\u20131,500 Pa system resistance, compressed air for pulse-jet cleaning, and sorbent consumption where acid gases require it. Element replacement is a planned five-plus-year item covered by warranty, not an annual outage.<\/p>\n<h2>Specifying a Project?<\/h2>\n<p>Flue gas filtration above the fabric limit is decided by four numbers: temperature profile, dust loading, gas chemistry and moisture. Send us those four \u2014 a gas analysis and a flow rate are enough to start \u2014 and our engineers will return an element count, a pressure-drop budget and an honest suitability assessment, including the cases where ceramic is not the right answer. <a href=\"https:\/\/anchor-filter.com\/contact\/\">Contact the engineering team<\/a> \u2014 we reply within one working day.<\/p>\n<p><script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is the difference between flue gas filtration and flue gas treatment?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Filtration is the particulate-removal stage \u2014 the barrier that captures dust and ash. Treatment is the wider chain that may add desulfurization, denitrification and dioxin control. 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Element replacement is a planned five-plus-year item covered by warranty.\"}}\n]}\n<\/script><\/p>\n<div style=\"max-width:1140px;margin-left:auto;margin-right:auto;box-sizing:border-box;padding-left:15px;padding-right:15px;\">\n<div class=\"an-related\" style=\"border-top:1px solid #E5E7EB;margin:32px 0 0;padding:16px 0 0;\">\n<p><strong>Related guides:<\/strong> <a href=\"https:\/\/anchor-filter.com\/high-temperature-filter-media\/\">filter media above 260\u00b0C<\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"an-cta\" style=\"background:#EFF6FF;border:1px solid #BFDBFE;border-radius:8px;padding:18px 22px;margin:28px 0;\"><strong>Need a <a href=\"https:\/\/anchor-filter.com\/hot-gas-filtration\/\">hot gas filtration<\/a> solution?<\/strong> Tell us your gas temperature, dust load and flow rate \u2014 our engineers will reply with a sizing suggestion. <a href=\"https:\/\/anchor-filter.com\/contact\/\">Contact us<\/a>: sales@anchorgd.com | WhatsApp: +86 135 3986 0818<\/div>\n<h2>Related Terms: Off-Gas Filters, ESP and Gas-Phase Filtration<\/h2>\n<p>An off gas filter in metallurgical and kiln service is the same duty as flue gas filtration: removing dust and acid gases from hot process exhaust before the stack. An electrostatic flue gas filter (ESP) handles large volumes but struggles with high-resistivity dust and cannot be maintained in-house \u2014 see the technology comparison above. If you are asking what is gas phase filtration, or how to filter gas at high temperature: it is the separation of solid particles from a gas stream, and above 260\u00b0C the practical answer is a rigid ceramic fiber element rather than any textile medium. Typical hot gases examples within our scope: boiler flue gas, kiln off-gas, furnace exhaust and waste-to-energy combustion gas.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flue Gas Filtration: How to Clean Hot Industrial Exhaust Above 260\u00b0C Key takeaways Flue gas filtration removes dust, acid gases, NOx and dioxins from industrial exhaust before the stack \u2014 the technology choice is decided first by gas temperature. Above roughly 260\u00b0C, fabric bags fail and the classic answer is an ESP plus a chain [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":453,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-825","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Flue Gas Filtration: Hot Gas Cleaning Above 260\u00b0C | Anchor<\/title>\n<meta name=\"description\" content=\"Flue gas filtration for hot industrial exhaust: compare baghouse, ESP and ceramic fiber systems that remove dust, NOx and dioxins at 600\u00b0C in one vessel.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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