Biomass boiler acupuncture felt coated filter bag PPS why PTFE immersion treatment

Nowadays, environmental protection is increasingly strict. Many manufacturers are required to install dust removal equipment. Construction will be stopped if they are not installed. When the dust removal equipment is purchased, the manufacturer first thinks of installing a bag filter, which is an efficient dust removal device. Under the circumstances, the average dust removal efficiency can exceed 99.9%. Generally, it can satisfy such efficiency. Therefore, there is a lack of careful research on the factors that affect the performance of the bag filter. Although the bag filter is relatively expensive in the early stage, it is dust-removed. The efficiency is better and more stable. In the bag filter, the bag of dust remover belongs to the heart of the bag filter. We must always take good care of the situation of the filter bag, otherwise there is something wrong and it will have a direct impact on the manufacturers. In use, there are many aspects that will cause the life of the filter bag to be shortened. We can get some suggestions through corresponding analysis, and then increase the service life of the filter bag, so it is necessary to understand the factors that determine the efficiency of dust removal.
Qualitatively speaking, the main factors affecting the dust removal efficiency include:

Dust properties - particle size distribution, density, shape factor and static charge;

Fabric properties - fiber and yarn thickness, fabric thickness, porosity and surface treatment;

Operating parameters - filtration speed, resistance to air flow, gas temperature and humidity, cleaning frequency, etc.;

Ash removal method - mechanical vibration, reverse air flow, compressed air pulse, etc.

Interdependent relationship - dust and fabric, dust and resistance, dust and cleaning methods.

The PPS filter is the first choice for boiler flue gas treatment. The PPS filter bag is made of polyphenylene sulfide (PPS) fiber manufactured by the United States, Japan, and other countries. The filter material is manufactured and processed according to the production process of other high temperature resistant filter mats. One of the main varieties of high temperature filter material. PPS needle-punched filter has excellent performance in the following applications.

1. Sulfur contained in fuel or sulfur oxides contained in flue gas has been proved to be resistant to acid and alkali corrosion and strong chemical resistance.

2. Where flue gas contains moisture.

3, Operating temperature 190 °C, short-term operating temperature 232 °C, melting point 285 °C, limiting oxygen index 34-35.

4. Oxygen content can be applied to 15% or less.

5, in the temperature of 190-232 °C industrial and mining conditions, air to cloth ratio of up to 5:1 to do online cleaning and gas cloth ratio of 6:1 for offline cleaning, PPS dust filter bag has an excellent performance record.

Among filter dust collectors such as filter coal boilers, waste incinerators, and power plant fly ash dust collectors, PPS filter mats are ideal filter materials. PPS fiber has the strength of complete retention and inherent chemical resistance, can maintain good filtration performance in harsh environments, and achieve an ideal service life.

The basic requirements of the filter bag filter can be attributed to high efficiency, low resistance, long life. High efficiency means high filtration efficiency. Low resistance means that the filtration resistance must be as low as possible. According to research, more than 70% of the resistance of the bag type dust removal system comes from the filtration resistance of the filter bag. The long life of the filter bag is directly related to the reliability and economy of the bag filter. The characteristics of flue gas in coal-fired power plants require that the filter bag must have high temperature resistance, chemical resistance, oxidation resistance, flex resistance, and wear resistance. During the installation of the bag filter, special attention must be paid to the verticality of the filter bag installation in order to avoid friction between the filter bags and to ensure the cleaning effect of the spray cleaning.

The safety of the operation of the bag filter is closely related to the operating conditions of the boiler. The abnormal damage or even the failure of the filter bag is mainly due to the fact that the operation of the bag filter has not been responded to when the boiler operation is abnormal. For example, the air precipitator card Astringent causes abnormal high-temperature burning of the flue gas; the explosion of the economizer leads to an abnormal increase in the humidity of the flue gas; In addition, severe air leakage in the air preheater will cause the oxygen content in the flue gas to increase sharply, accelerating the oxidation of the filter bag, thereby accelerating the filter bag damage. Flue gas from many factories, such as boilers, dryers, roasters, heating furnaces, calciners, various metallurgical furnaces, mills, etc., have high moisture content. Therefore, special attention should be paid when using dust collectors. Bonding problems.

The above is to give you a detailed introduction of "Why do PTFE maceration treatment of PPS made of biomass boiler needled felt bag?", for more information, please contact the hotline at 15343174995 0317-5660219 QQ 3406358895. The company specializes in the production of pulse bag filter, cyclone dust collector, wet desulfurization dust collector, electrostatic precipitator, filter dust collector, exhaust gas purification and deodorization equipment, as well as dust collector bag, precipitator skeleton, pulse electromagnetic valve, pulse controller, cylinder , bag hanging, Venturi tube, screw conveyor, unloader, flapper valve and other dust collector accessories, the company can provide on-site survey, to help customers design selection! Provide structural drawings, working principles, technical parameters, pre-sales, after-sales service intimate! The company in good faith-oriented, quality of survival, reputation and development. Our company has always established long-term friendly trade relations with customers both at home and abroad on the basis of equality and mutual benefit, and warmly welcomes Chinese and foreign customers to call us for business negotiation.