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Analysis and Research on energy saving and emission reduction technology of indu

Update time:2015-12-24 20:04:30Click times:1445
Industrial furnace is a high energy consumption equipment, many varieties, is the key equipment of industrial heating, widely used in many industries of the national economy. At present, I between the Kuomintang and the Communist Party of China has various industrial furnace of about 12 million units, the annual total energy consumption reached 2.6 million TCE, accounting for about a quarter of the country's total energy consumption, accounting for 60% of total industrial energy consumption. Although the industrial furnace technology has made great progress since the reform and opening up, but the overall level of industrial furnace energy utilization is not high, equivalent to the level of the developed countries in twentieth Century 60 ~ 70 years, industrial furnace thermal efficiency of less than 36%, while the international industrial furnace thermal efficiency of an average of more than 50%. China in the field of industrial furnace energy saving, with considerable potential, how to save energy and improve the level of energy use, is still a priority.
General measures for energy saving of industrial furnace at present
The energy consumption of industrial furnace is influenced by many factors, but the main measures of energy saving are generally based on the optimization design, the improvement of equipment, the recycling of waste heat utilization, the use of new technologies, new processes, to strengthen the detection control and production management.
Furnace structure and building materials
In the design or improvement of industrial furnace, according to the requirements of the production process, as far as possible the use of new energy-saving furnace and energy-saving refractories. The furnace structure is a congenital condition for the energy saving of the heating furnace, so it should be considered as the need of the heating furnace energy saving in the new heating furnace. Furnace structure of new or modified, to make the fuel burn as much as possible in the furnace. The fuel in the furnace exist appropriate combustion space and combustion time, discharge reduction furnace flue gas heat loss, to the extent possible, much of the flue gas waste heat recovery to the hearth, improve the utilization coefficient of high stove fuel; try to reduce furnace the heat loss, improves the heat efficiency of the stove. In the optimization of the furnace structure, improve the energy efficiency and the degree of automation, the current energy saving measures are generally used in the following aspects.
Industrial furnace thermal test
Energy conservation must have a scientific measurement and comparison test method. At present, the test method used is generally thermal balance test method. Through the industrial furnace thermal measurement and comprehensive understanding industrial furnace thermal process, analysis and diagnosis of heating furnace condition, to find out the cause, to carry out energy-saving technological transformation, to further improve the thermal efficiency of heating furnace, reduced consumption, at the same time, through to obtain the parameters of the heating furnace to run economic and technical performance index, analysis of the furnace operation, timely adjustment of the furnace operating conditions, so as to achieve the operation of the best state, and find out the energy conservation effective way and direction.
Furnace structure and building materials
In the design or improvement of industrial furnace, according to the requirements of the production process, as far as possible the use of new energy-saving furnace and energy-saving refractories. The furnace structure is a congenital condition for the energy saving of the heating furnace, so it should be considered as the need of the heating furnace energy saving in the new heating furnace. Furnace structure of new or modified, to make the fuel burn as much as possible in the furnace. The fuel in the furnace exist appropriate combustion space and combustion time, discharge reduction furnace flue gas heat loss, to the extent possible, much of the flue gas waste heat recovery to the hearth, improve the utilization coefficient of high stove fuel; try to reduce furnace the heat loss, improves the heat efficiency of the stove. In the optimization of the furnace structure, improve the energy efficiency and the degree of automation, the current energy saving measures are generally used in the following aspects.
Step type furnace
To coordinate the production of furnace arch is not affected by the loading of uniform compared to the step type heating furnace practice shows that, with the traditional pusher type reheating furnace has many advantages: due to the slab is left between the gap, as the billet can be realized surrounded by heating, heating quality, steel heating temperature, heating speed, billet in furnace residence time is short, is conducive to reduce billet oxidation burning loss, convenient for decarbonization of steel decarburization layer depth control, flexible operation, can move forward, backward or steps, can change the spacing, the control of industrial furnace production, production capacity, and the production capacity is relatively flexible, furnace billet thickness and shape control, not; for continuous casting billet hot charging.
Masonry made of refractory materials in a furnace hearth
In order to increase the furnace body of the billet heat radiation area of heat, equivalent to in the furnace of the original space increases the furnace wall and roof surface area and enhances the radiation heat transfer area. In the furnace set the appropriate partition can play to stabilize the furnace pressure, gas flow control, temperature control, reduce gas spillover, reduce the exhaust gas temperature and cold reducing hydrogen in the furnace head. Therefore, according to the actual situation in the furnace is additionally provided with refractory brickwork, on the energy consumption of the industrial furnace have obvious effect, by Tianjin Iron and Steel Group East Yi company practice proof, this method can save energy, to improve the effect of billet heating.
The furnace body is sealed, including the leading members in the furnace chamber.
The furnace shell, furnace door sealing, slag hole and other places. Stove Mifengbuyan will cause run around the fire, fire leakage, the cold air sucking, resulting in waste a lot of energy, burn out equipment, harsh environmental conditions, so the furnace body sealing directly affect the workpiece heating quality and level of energy consumption, and is sealed furnace atmosphere control key. The emergence of refractory fiber products, in order to solve the furnace body seal to create the conditions to achieve a soft seal. The castable lining, and sealing structure of the insulation layer and the furnace plate, can achieve good sealing effect of furnace body.
(Edit:admin)
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