In the environmental protection dust removal equipment, bag dust remover is a kind of widely used equipment, the following characteristics of bag dust remover to popularize relevant knowledge.
1. The bag dust collector is able to handle the flue gas temperature below 300 ℃, should be made for the flue gas temperature over the cooling process, under special circumstances, can use the metal fiber filter material directly with 450 ~ 550 ℃ high temperature flue gas. The flue gas from steam boilers, cement kilns, metallurgical kilns, incinerators and other high temperature kilns is treated by cloth bag dust remover, which is more and more popular at home and abroad. Although the bag dust collector is conditioned by the filter material material heat resistance performance, but the system of flue gas by appropriate processing, has been able to processing temperature of 1200 ~ 1400 ℃ high temperature flue gas.
2. The selection of a dust bag must depend on the application conditions, in addition to the conventional dust concentration, dust fineness, flue gas temperature, moisture, discharge requirements, dust bag filter material strength characteristics, etc.; Chemical stability such as resistance to acids, bases, and hydrolysis must also be considered.
3.in the treatment of the alumina, silica, sinter pecked dust, such as grinding as the coarse particles in the smoke and air flow velocity in the bag filter is too high, cause the filter filter bag and shell strong wear, therefore, should reduce the number of coarse particles of dust in the flue gas and dust reduction gas velocity of two aspects of the corresponding measures, such as set up in front of the flue gas into the bag filter dust removal device, strictly control the filter bag inlet velocity, inlet airflow is wear-resisting material, etc.
4. The filter wind speed is a very important parameter to determine the performance of a dust remover, and its value is directly related to the effect and life of the filter material. Yet it is not a formula to describe the relationship between it and the factors, but it with dust, on the characteristics of the flue gas and ash removal mode, and the material of filter material, fabric structure, and the size of the investment and operation of the economy, and therefore need to choose carefully, be sure to refer to many successful experiences and the lessons of failure.
5. Now there are many manufacturers producing and distributing all kinds of filter materials. Some dust removers are bad in use, low in efficiency and short in life. So choose some kind of dust bag, must understand the manufacturer's production technology is complete, technical source is reliable, product quality and test means whether to have assurance, sewing technology is reasonable, after-sales service commitment whether to honor, in a word to choose authentic, quality and reliable products.
6. The selection of bag dust remover bag material, in addition to the technical characteristics, but also comprehensive evaluation of its economic, not simply "cheap" and "expensive", in the reliable technology, meet the requirements of the use of the premise, then consider the price problem; The price of filter material should consider both the initial investment and the economy of operation. For example, laminated needled felt, compared with ordinary needled felt, the price has increased several times, but under the same conditions of use, the running resistance can be reduced by half, saving the running power consumption; At the same time, the output of main engine can be increased due to the reduction of resistance and the improvement of process ventilation, and the economic effect is considerable. So some of the old equipment transformation, in order to improve ventilation, improve the output, the optimal plan is to change the original ordinary filter material into coated filter material, without increasing the filtration area, do not expand the equipment, do not need to move soil construction, can achieve immediate results. With the continuous progress of bag-type dust removal technology, bag-type dust remover can be seen in use in every link of the whole production process of cement industry. That is to say, the current bag-type dust remover can completely solve all the dust discharge points in the cement production process and make it meet the national emission requirements.