Analysis on the Current Situation and Future Trend of Energy Saving and Emission Reduction of Indust

Taking effective measures to reduce the waste of resources caused by kiln production and environmental pollution is one of the key issues of China's government reform and exploration of industrial production in recent years. It is becoming a breakthrough in industrial production and environmental protection. The main way of tension between them. At home and abroad in the field of industrial energy-saving production technology research and development and application has achieved remarkable results, but because of China's late start in the field there are many problems in urgent need to improve and improve, so government departments and researchers also need to continue efforts to To ensure that in the near future really formed a perfect, but with Chinese characteristics of industrial production energy efficiency system. The use of new environmentally friendly energy as fuel, reduce environmental pollution.

    The source of energy for traditional industrial production is dominated by coal and oil. The expansion of industrial production on a global scale has led to an increasing energy crisis, which has led to a sharp rise in energy prices, which is beyond the reach of all countries. At the same time, Will cause the deterioration of environmental pollution problems, industrial waste emissions caused by the consequences are affecting the normal production of human life. In order to alleviate these problems, countries are committed to the development and application of new alternative energy materials. Currently, the new alternative energy non-bioenergy is universally recognized. The cost of bio-energy is low and the raw materials can be seen everywhere. best choice.

    New biofuels have been widely concerned in recent years, countries have been biofuel research and development to replace the traditional coal and other high energy consumption and high pollution of raw materials. Biofuel manufacturing mechanism is through the body itself can use photosynthesis to produce energy organic matter to be developed and used to extract from the people can effectively use the energy of a new type of renewable energy sources. In the process of bio-energy manufacturing, both animals and plants or micro-organisms can be used for energy development and manufacturing, the current foreign mainly to the development of ethanol as a new source of energy, China is committed to agricultural production from bio-energy. Bioenergy has the following advantages over traditional energy: First, the source of energy is diverse and easier to obtain. For example, the agricultural production of crop stalks, animal feces, industrial production and life of organic waste emissions, a large number of energy-rich animals and plants, etc., these materials are rich in nature, easy access, and can be renewable The advantages. Second, the rich variety of energy products, industrial production can provide a variety of options. Energy produced by biotransformation technology can present different types of manifestations, such as biogas, ethanol. Energy and a variety of solid-state energy substances, these energy can be widely used in industrial production, and will not cause any pollution to the environment, while the industrial and agricultural production of waste to achieve recycling, the real realization of turning waste into treasure. Third, the new bio-energy production and manufacturing process, can effectively promote the development of related production industries, not only can reduce the cost of industrial production, but also to promote farmers' income increase, help narrow the gap between rich and poor rural and urban areas. Finally, bio-energy has the advantage of recycling, because its raw material source is an organic organism in nature, therefore, can promote the plant for the absorption of carbon dioxide, will be unfavorable to benefit.

    Development and use of new combustion technology using a new type of industrial combustion technology is also an effective way to save energy and reduce emissions. At present, China's widely used combustion technology mainly includes the following. High temperature air combustion technology, also known as regenerative combustion technology, is an efficient waste heat recovery energy-saving technology. Regenerative combustion technology refers to the exchange of air or gaseous fuel and flue gas, so that through the regenerator, to the maximum extent possible recovery of high temperature flue gas sensible heat, smoke temperature can be reduced to 180 ℃ below, The medium or gaseous fuel is preheated to above 1000 ° C to form a new type of flame different from the conventional flame, and the commutation combustion causes the furnace temperature distribution to be even more uniform. At present, China has been in the rolling furnace glass furnace, aluminum melting furnace, forging furnace and ladle baking and other industrial furnace on the successful application of regenerative combustion technology.

    Pulse combustion technology is a way of intermittent combustion, the use of pulse width modulation technology, by adjusting the combustion time on and off to achieve the furnace temperature control. This technology is easier to control the furnace temperature of the furnace, so the furnace temperature field is uniform and the temperature fluctuation is very small, but also saves fuel. In recent years, the technology in metallurgy, ceramics and other industrial kiln combustion system control has been gradually applied, the effect is good.

    Oxygen-enriched combustion technology is based on the combustion of oxygen in the air over the conventional value of a highly efficient enhanced combustion technology. Oxygen-enriched combustion technology can reduce fuel ignition, speed up the combustion reaction speed, promote combustion completely, reduce the excess air coefficient, reduce the amount of flue gas after combustion, thereby improving the efficiency of heat utilization. Oxygen-enriched combustion technology is more suitable for use in high-temperature industrial furnaces, such as metal heating furnace and glass melting furnace, etc., there are data that forging furnace if the use of 23% to 25% oxygen-enriched air combustion, saving 1/4 of the fuel. Fractional combustion technology refers to the air by changing the amount of air will be sent to the main combustion area, the formation of anoxic fuel excess combustion, and then the remaining air in the second stage of combustion zone to join the formation of lean fuel burn area to complete the entire combustion process. Fractional combustion can reduce the emission of nitrogen oxides, according to the results of the project shows that the use of graded air combustion technology, the exhaust emissions of nitrogen oxides decreased by about 35%. The use of the production process by the effective use of by-products.

    Industrial furnace waste heat mainly refers to the sensible heat of the discharged combustion products and the sensible heat from the heated product. These sensible heat carried by a larger number, if you can make good use of its economic and social benefits, are significant in the high temperature flue gas waste heat. The main uses include: the use of waste heat boiler steam or heating the direct use of heat transfer oil, the use of heat exchanger preheat combustion air, as well as through the waste heat boiler steam and steam turbine power generation to steel heating furnace, for example, rolling furnace The temperature of about 1000 ℃, in the flue to set the efficient air and gas preheater on the combustion air and gas for preheating, air can be preheated to 600 ℃, gas preheated to 300 ℃, tons of steel fuel consumption can be reduced by 0.3GJ The

    Low temperature flue gas waste heat generally refers to the temperature below 400 ℃ flue gas waste heat, although the waste heat although the grade is low, but a large number of waste heat, and now generally use pure low temperature waste heat power generation technology to energy saving and economic benefits. For example, the cement plant will be 400 ℃ below the low temperature waste heat converted into electricity and used for production, cement clinker production can reduce the overall power consumption by about 60%, or cement production combined reduced power consumption by about 33%.

    Residual pressure recovery power generation technology refers to the use of industrial kiln waste gas generated by the direct pressure to generate electricity. For example, the steel plant blast furnace roof gas pressure turbine power generation device, is the use of blast furnace roof gas with the pressure, the expansion of the work done by the turbine, the generator to drive the power generation device.