Nomex heat-resistant dust filter bags have been manufactured and supplied by Tan Thanh in the Vietnamese market since 2010 to replace imported Nomex dust filter bags, certified ISO9001:2015. The product uses m-Aramid filter materials from the world’s leading brands in manufacturing filter materials that meet ISO, DIN, DIN EN ISO, VDI testing standards. This dust filter bag is effectively applied in typical manufacturing industries that need to handle large volumes of dry dust, abrasive dust, hot gas dust (high heat resistance) such as: boilers, coal furnaces, multi-fuel furnaces, kilns, drying materials, cement, hot asphalt concrete, chemicals, coal, metallurgy, steel, kilns, metal smelters, waste incineration for power generation, minerals, etc.
Benefits (End-users) of Nomex Heat-Resistant Dust Filter Bags supplied by Tan Thanh:
- Nomex dust filter bags supplied by Tan Thanh significantly reduce the energy demand of the dust filtration system by:
– Optimized surface filtration, from fiber manufacturing to filter surface treatment – dust contact, surface dust cake formation and deep dust penetration prevention.
– Improved regeneration (recovery of material state) thanks to anti-dust adhesion and shape stability under harsh operating conditions.
– Minimizing pressure drop, helping to maintain stable operating conditions to save power.
– Minimizing CO2 emissions for the factory. - Controlling the reduction of output dust concentration according to QCVN (national) requirements.
- Optional Nomex fabric with fiber and core structure depending on technical requirements and size (fiber / scrim).
- High durability, stable operation throughout the usage cycle.
- Responding to the maintenance plan of each factory, Tan Thanh provides new filter bags when the old ones need to be replaced
Nomex dust filter bags manufactured by Tan Thanh are contributing practical values to the filtration industry in Vietnam. Using high-performance Nomex filter materials from Gutsche and AOG, the Nomex TATA Filter Dust Filter Bag not only has all the necessary filtering features, but is also an effective energy-saving solution for the factory during continuous operation.
Both the new filter system and the existing filter system of the factory, when the filter bag needs to be replaced, can be equipped with new dust filter bags using high-performance filter materials from Tan Thanh.
1. Nomex Filter Material (m-Aramid)
What Nomex is?
From meta-Aramid origin fiber, Dupont brand (from USA) created fireproof fabric at woven and nonwoven fiber, first published in 1967 with the name Nomex. Since then, “Nomex” gradually became the common name for high temperature resistant m-Aramid fiber fabric.
Microscopic images of m-Aramid fiber (Nomex):
M-Aramid fiber, with its oval shape (not round), creates a larger filter area compared to PE and PPS fibers, allowing it to filter very fine dust effectively.
With the own fireproofing and anti-abrasion features, Nomex fabrics are improved with more durable, lighter and expand the application.
The main feature of Nomex material
- Advantage: Withstands high temperatures (up to 220ºC), very good alkali resistance, especially suitable for hot dry exhaust gas environments – where material hydrolysis is difficult to occur. Therefore, Nomex heat-resistant dust filter bags (m-Aramid) are widely used in dust filtration applications for hot asphalt concrete stations, cement production lines, metallurgy industry, material drying systems, etc.
- Disadvantage: m-Aramid fibers are susceptible to hydrolysis, easily damaged by acid vapors, so Nomex filter bags are generally only suitable for certain application areas where they can demonstrate the above strengths.
Scale of heat resistance and chemical resistance of Nomex filter media in dry conditions:
Nomex filter material manufacturers:
Nowadays, there are many manufacturers worldwide, particularly Gutsche (Germany) and AOG (Japan & India), which are the primary suppliers of TAN THANH in making filter bags.
Gutsche’s special technologies apply to Nomex filter materials:
- Membratex®: PTFE membrane helps to filter fine dust, even dust size PM 2.5, qualified Zero E emission.
- Sparktex®: Create layer in surface “fence” to against sparks, preventing burning dust particles from entering the dust filter chamber.
- Antafin®: Nomex surface treatment increases anti-stick, moisture and oil resistance, helping to prevent fabric bags from being clogged, clogged with dust and rotten.
- Condutex®: Helps remove static electricity from dust and prevent fires and explosions, qualified by ATEX 137, DIN 54345/ part 1 & 5.
AOG’s special technologies applied to Nomex filter materials:
- Nomex®: Through a license with DuPont Company (USA), AOG products using Nomex fibers will be called Nomex.
- Fluorobond™: Nano-ceramic thin membrane increases heat and friction resistance, equivalent to or better than PTFE coating, creating higher performance without increasing material size.
- Staticguard™: Helps handle potentially explosive dust, discharge electrostatic dust easily and quickly, minimize fires and explosions, and minimize accidents caused by dust explosions.
Quality testing organizations set standards for filter materials:
There are many organizations that can test the quality of Nomex filter material, the leading ones are:
- ISO – The International Organization for Standardization
- DIN – Deutsches Institut für Normung
- VDI – Verein Deutscher Ingenieure
- FDA – Food and Drug Administration
Filter mater with m-Aramid nonwoven fiber qualified in density, weight, thickness, tension, tensile strength, heat resistance, air permeability, shrinkage, resistance to chemical effects (acid, alkali, oxidation, hydrolysis,…).
2. Tan Thanh Nomex Heat-Resistant Dust Filter Bag
Prodution capacity of Tan Thanh Nomex heat-resistant dust filter bags:
With 14 years of production experience in different type of Nomex filter bags, Tan Thanh human resources staff have been trained thoroughly from GUTSCHE and AOG experts, understood the techniques and produced high quality Nomex bags that are suitable and meet the strict requirements for each customer.
Manufactured on modern, automatic machinery lines, we create high quality and consistent Nomex filter bags. The entire process is applied to ISO 9001-2015 standards.
Structure of Nomex heat-resistant dust filter bag manufactured by Tan Thanh:
Tan Thanh produce based on the customer’s dimensions requirements. Before production, the technician will survey, measure and take samples, ensuring that the Nomex filter bag after installation fits properly and does not leak dust.
- Bag body: Covered with glue to prevent fine dust from passing through and increase the bag’s lifespan.
- Bag mouth: Elastic steel ring is the most common type- Stainless steel (SUS 304).
- Bottom of the bag: Reinforced with two layers of both the foot and bottom of the bag.
- Sewing thread: 100% high strength PTFE.
- Bag dimension: Common with diameter D135 – 165 (mm), length from 1,000 – 7,000 (mm).
Refer Tan Thanh’s video of applying glue to heat-resistant dust filter bags:
Reference of Tan Thanh Nomex heat-resistant dust filter bag with the material specifications:
References:
GUTSCHE: Technical Data 2009. GUTSCHE porotex® Product Programme. Test Report (CQ 12/2022, CQ 2/2023).
Website: Product Range – Lydall Gutsche GmbH & Co. KG (lydall-gutsche.com)
AOG: AOG Brochure. Advanced Material Division (product specification). Product Information 2017. Certificate Of Analysis (COA 2017).
Website: ARVIND OG NONWOVENS PVT. LTD. | OG Corporation
Application of Nomex heat-resistant dust filter bag
Below are the outstanding advantages of Nomex filter bags in applications:
- Can handle dust in humid conditions: With special fabric materials and advanced production technology, Nomex filter bags are highly effective in supporting dust filtration with outstanding moisture resistance and anti-adhesion. High dust filtration efficiency up to 95-99%.
- Good heat resistance: The normal temperature that Nomex dust filter bags can withstand is less than or equal to 240 degrees Celsius. However, we should not let this product withstand continuous temperatures at 240 degrees Celsius because it can greatly affect its durability.
- Good chemical resistance: This product can operate in environments containing acids and alkalis. In particular, it still works well in environments containing hydrocarbons and chloride gas. Therefore, if the working environment contains chemicals, you can prioritize choosing this product.
- High tensile strength, high durability.
- Long service life, up to three years, if regularly maintained.
Therefore, Nomex heat resistant dust filter bags are widely used in manufacturing plants: hot asphalt concrete, coal-fired boilers, incinerators, cement, coal chemicals, minerals, etc.
Further reference
TECHNICAL SUPPORT
- Lựa chọn vật liệu lọc xử lý khí thải cho lò hơi lò đốt (Choosing filter materials for exhaust gas treatment for boilers and incinerators)
- Mười hai phương pháp xử lý bề mặt vải lọc bụi hiệu quả (Twelve effective dust filter fabric surface treatment methods)
- Cách tự kiểm tra túi lọc bụi để chuẩn bị thay thế (How to self-check dust filter bags to prepare for replacement)
NEWS
- Hợp tác cùng GUTSCHE LYDALL (Cooperates with GUTSCHE LYDALL)
- Distributor Certification from GUTSCHE ALKEGEN
- AOG Agent Certification
- Certification of ISO 9001:2015
CASE STUDIES
- Sử dụng dịch vụ kiểm tra, dò tìm túi lọc bị thủng (thoát bụi) (Use the service to check and detect punctured filter bags)
- Hệ lọc bụi có thể cải tiến, nâng cấp hay không? (Can the dust filter system be improved or upgraded?)
- Tại sao túi lọc bụi liên tục bị hư hỏng khi vận hành? (Why are dust filter bags constantly damaged during operation?)
