Energy Consumption of China 's Glass Industry
Glass furnace energy-saving, the actual glass industry is a comprehensive system of comprehensive implementation of the problem, are indispensable. Is a glass industry energy-saving technology in a major issue
China's glass industry furnace energy consumption situation:
China has about 4000 ~ 5500 various types of glass furnace, which melted area of 80 m2 below the number of small and medium-sized furnace about 80% of the total amount of fuel types: coal-fired furnace about 63%, fuel furnace Accounting for about 29%, natural gas furnace, the whole electric furnace, etc. accounted for about 8%.
In 2008 the national glass production is about 2000 to 30 million tons. Year consumption of standard coal 1700 ~ 21 million tons. Which flat glass production of 53192 million weight box, the energy consumption equivalent to 10 million tons of standard coal / year. The average energy consumption of 7800 dry coke / kg of glass, the furnace thermal efficiency of 20 to 25 percent, 30% lower than the international advanced indicators ≦ 5% to 10%. Annual emissions of about 160,000 tons of SO2, dust 12,000 tons, NOx 14 million tons.
Glass melting furnace in the glass factory is the most fuel consumption of thermal equipment, in general, accounting for the total energy consumption of the whole plant about 80 to 85%, China's glass industry is currently used in the main energy: coal, oil, electricity and natural gas and other fuels The As the fuel prices continue to rise over the past few years, enterprise fuel costs increased year by year, the benefits of sharp drop in this situation, the glass industry in accordance with China's energy reserves of species structure, distribution, quantity and price have to do the use of adjustment. So that the previous planning and design to implement the use of clean, high calorific value of energy ideas have undergone some changes. In recent years, enterprises want to strive for greater efficiency. There are many oil furnace into a coal-fired stove, in order to bring no small environmental protection problems. Of course, the past few years with the development of China's power industry, the whole oxygen furnace, electric melting, the whole electric furnace has a greater development.
2008 daily glass production 14.47 million tons, such as the average yield of 90%, the annual glass output should be 15.9 million tons, the annual consumption of standard coal 557 to 636 million tons. The completion of industrial output value of 86.55 billion yuan, exports 210 million US dollars, the unit consumption of an average of 350 to 400 kilograms of standard coal / ton of glass, better per ton of glass 150 ~ 250 kilograms of standard coal (beer bottles , Pesticide bottles, ordinary white materials, etc.), poor as much as 900 to 1000 kilograms of standard coal, the difference between the three as much as 3 to 4 times. Another example is the efficient use of kiln heat efficient 25 to 38%, behind only 12 to 22%, between the difference of 3 to 26 percentage points, foreign daily glass bottle melting furnace consumption of 110 ~ 130 kg standard coal / Ton of glass liquid, labor productivity of 200 to 370 tons / year, the melting rate of 2.5 to 3.8 tons / m2 day. Most of the furnace for the daily output of 180 to 250 tons. Thermal efficiency of about 48%. The gap between domestic and foreign.
China's reform and opening up before the national glass industry furnace furnace and technology are relatively backward, high energy consumption, after the reform and opening up the introduction of many foreign glass furnace advanced hardware and software, with people sent to study abroad, combined with national conditions Our technology workers after 30 years of the introduction of digestion and absorption, the use of many new technological innovation design of China's efficient, long life, energy-saving new furnace, so that China's glass industry furnace energy-saving technology has made great progress, but with the most advanced Technical level ratio, there is a certain gap.