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Blast furnace gas is produced during the blast furnace gas, carbon monoxide is high, the low calorific value is a highly toxic gas, iron and steel enterprise production use is an important secondary energy. Tons of iron gas heat 170Kg ~ 180Kg of standard coal equivalent, full use of steel mill blast furnace gas is one of the important work of saving energy. Blast furnace gas in the folder with a lot of dust, called the shortage of gas, not to filter in cleaning will not be used. Therefore, the raw gas of blast furnace gas purification is an essential part of use. This is the first to go through thick dust, remove the large particles of dust, then fine dust, fine dust called net gas after the gas. In general, the user requests a net gas gas dust content is less than 10mg/m3, after purification of blast furnace gas can be used not only to residual pressure power generation, is also provided to the stove so the user can re-use. Dry Bag technology Dry bag filter in the early development of our country, early 70s of the 20th century for small and medium sized blast furnace, to obtain good results. Dry bag filter's first in November 1974 in Shexian Iron blast furnace built 13m3; May 1981 No. 3 blast furnace at Linfen Iron and Steel on the completion of the first blast furnace gas dry 100m3 bag filter, obviously. The 20th century, the late '90s, the use of electromagnetic pulse valve, made by the anti-hair bag cleaning method to pulse cleaning, filtering filter type from the inside to outside the filter type, and using fiberglass needle felt, and other new filter, to Dry Bag blast furnace gas from the big bag technology development of anti-hair means a fixed tube-type jet cleaning method. Dry dust removal technology gained a new life, entered a new stage of development. Recent years, the metallurgical industry, whether it is new or the expansion of the old blast furnace, small blast furnace gas have changed to a new technology system Dry Bag. After continuous application and improvement, dry bag filter dust in the small blast furnace has been closer to maturity. Large blast furnace gas dry bag filter Small blast furnace dry bag filter used successfully for the large blast furnace with dry bag filter basis. At the same time, large-scale blast furnace-equipped, better and stable furnace conditions, stable smelting operation, gas temperature, pressure, moisture content and other less volatile, gas, ash content less than the small blast furnace, in theory, have adopted more than the small blast furnace Dry Bag conditions. However, the occurrence of a large quantity of blast furnace gas is bound to multiply the number box, each box on both valves Compensator , An instrument, etc., which makes the dry dust of a lot more trouble spots, while area also increased significantly. To solve the big blast of dry dust collector box quantity, low reliability shortcomings, Swiss enterprises in the dry dust sail technology, equipment, key parts, conveying system and other systems have done thorough research. Through a large number of arguments, the small Swiss companies BF fan of dry dust for a number of technical improvements, and through clad six blast furnaces, Steel 2500m3, Tangshan Steel 3200m3 blast furnace dust removal applications proved in practice that a large blast furnace dust using dry is entirely feasible. Blast furnace gas in a large dry bag filter in such key technologies: The first measures the raw gas of high temperature, spray blast furnace used to draw water and raw gas technology that combines Bleeding way. Second, large diameter tank, to reduce floor space, reduce the matching valves, meters and other electrical equipment, an investment and maintenance costs for maintenance. Third, two-way electromagnetic pulse jet technology. Fourth, using pressure adjustable pressure pneumatic conveying equipment, with low investment, low operation cost, a small fault, sealing, Ash process without secondary pollution. Fifth, the internal structure of dust optimize air distribution and security in a lot of work. Sixth, the filter selection and reasonable use of the high temperature, bending resistance, tensile strength combined with good P84 needle felt filter. Seventh, the choice of the valve within the spray of the wear of the coating, seals selected temperature, high strength materials. 8 is a compensator made of stainless steel used chlorine, sulfur, acid corrosion resistance of strong material. That is the system used PLC Or DCS Automatic control, process control more reliable. Large blast furnace gas dry dust to promote long way to go Blast furnace gas dry bag with the basic dust without water, no pollution, low energy consumption, and low running costs, can produce great economic benefits, first and foremost in the national steel industry to promote the "three in a year or electricity" ( blast furnace gas dry dust, dry dust converter gas, coke dry quenching and Gas Pressure power) of the first is a major integrated energy-saving and effective environmental protection technology, which BF in the country promote the use of China's steel industry can be sustainable development and competitiveness of great significance. However, in promoting large-scale blast furnace gas dry dust of the concrete implementation of the process, the scientific approach must be taken seriously. Different materials of different steel works, smelting intensity are different; over climate conditions, blast furnace gas generated by the different nature of ash dust, dry dust on the process requirements are not the same can not be applied mechanically, process designers must carefully distinguish different conditions treatment, targeted to make the design process step by step. The current technology of blast furnace gas dry dust is still some weak links, to be technical staff to study various aspects of gradual improvement. We are high quality suppliers, our products such as China Electronic Health Cigarette , Ego E-cigs for oversee buyer. To know more, please visits Electronic Health Cigarette.
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