Waste Heat Recovery Technology of Glass Electric Melting Furnace Flue Gas
Accordingglass electric melting furnaceAfter repeated design and comparison, the technical scheme of combining radiation water cooling sedimentation dust removal and convective heat transfer was finally selected after comprehensive consideration of the process characteristics, the placement of the site space, the resistance of the flue gas system and the ash content. The main equipment includes water-cooled settling chamber, high temperature evaporator, superheater, medium and low temperature evaporator, economizer, heater and related systems.
(1) Setting of flue gas waste heat recovery system
Firstly, a set of radiation water wall settling section is designed in front of the existing secondary combustion chamber outlet, and then a set of convection heat transfer section is designed under the original flue gas pipeline after passing through 90 ° rotation angle. The temperature of the high-temperature flue gas coming out from the secondary combustion chamber can be preliminarily integrated by using the radiation water wall assembly in the first set of heating surface, and meanwhile the velocity of the flue gas can be reduced to complete the preliminary settling of large dust particles in the flue gas, in order to reduce the load of the subsequent boiler and dust removal device, at the same time, the gas in the flue gas is not fully burned in the settling chamber to continue to react and burn thoroughly, so as to avoid the impact of explosion damage to the subsequent equipment or device, and play the role of peak cutting of high temperature flue gas.
The flue gas enters the waste heat boiler after passing through the water-cooled settling chamber. The waste heat boiler body is horizontally arranged according to the actual situation on site. The high-temperature flue gas passes through the high-temperature evaporator, superheater, medium and low-temperature evaporator, economizer and heat exchanger in turn (resistant to low-temperature dew point corrosion). The finally discharged flue gas is purified by the dust collector and then discharged to the atmosphere.
(2) Steam recovery system with heat accumulator
Dueglass electric melting furnaceFor periodic intermittent blowing, two regenerators are added to the steam system. Its function is to continuously and stably supply steam to the outside through the regulation of the heat accumulator, so that the steam can be recovered and utilized to the maximum extent.
1 Chang 6MPa saturated steam can be generated through the waste heat boiler. After passing through the heat accumulator, 1 Chang 1MPa saturated steam is supplied back to the superheater of the boiler body to realize basically stable output. Steam after heat can reach 260~350 ℃ and into the main steam pipe network.
Because the high borosilicate glass has the characteristics of low expansion rate, high temperature resistance and high strength, the glass is roasted at 630℃. so this type of glass is widely used. What are the advantages of high borosilicate glass compared with ordinary glass? Let me introduce to you briefly!
Because the low coefficient of thermal expansion, it is not easy for high borosilicate glass to crack under harsh temperature like soda lime glass. Therefore, many industries regard this kind of glass as a good choice for producing products. What other advantages does it have? Let's introduce it to you briefly.
In order to improve the service life of the feeder belt and its frame, and at the same time improve the uniformity of feeding, the Delta version.The YS type feeder is upgraded and adjusted as follows.
Phenomenon: During on-site debugging, such situations often occur: the same voltage and current are inconsistent when measured by different instruments, with deviations as small as 20~30 and as many as 60~70. So which is more accurate in measuring electricity meter, pointer meter or multimeter?
Because of its good chemical stability, bottle glass has no pollution to the contents; because of air tightness and high temperature resistance, a certain mechanical strength and reliable use; because of transparent or colorful and help to improve the grade of goods. Therefore, bottle glass is mainly used for product packaging in food, alcohol, beverage, medicine and other industries.
The air-cooling system of the pool wall of the electric melting furnace may not be of any use in the early stage of the furnace, but it shows its function in the later stage.