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60KA Soderberg rectifier power supply equipment in prebaked slot 200KA Application of large-scale


Do not have the conditions for parallel operation, but 8 of the rectifier changes are secondary rectifier diodes with two-phase pulse of 12 in parallel with the rectifier cabinet,[link widoczny dla zalogowanych], the role of the bridge rectifier (transformer only one-way operation , secondary side can not be sent to the primary anti-CLP) to more different models, different parameters brought parallel rectifier transformer condition. Single regulator rectifier load Tap achieved with crude surge unit, changing the secondary side rectification reactor to achieve saturation of fine regulator unit,[link widoczny dla zalogowanych], rectifier unit 6 sets of the original phase angle are: +10. , 0. A 10. , Add two units deployed in between the original units, phase angle of 15. . We use a rectifier transformer before the class has 54 on-load tap,[link widoczny dla zalogowanych], another in 5 sets of units low-voltage side of the additions since the saturable reactor, which can promptly adjust rectifier transformer for impedance differences caused by overload, 8 different technologies parameters of the overall composition of 36 +24 rectifier pulse rectification system parallel operation mode,[link widoczny dla zalogowanych], the 200I <A pre-baked anode power supply. Application of electrolytic production process can achieve better economic indicators, power supply is critical to the smooth, steady flow in order to achieve a better power supply, we will be 8 in the main transformer high voltage output rectifier rectifier 5 sets Unit Add regulator depth 40V self saturated reactors, 3 sets of rectified voltage output low without saturable reactor, the use of 40V the saturable reactor to achieve effect of steady flow tracking, the DC voltage output low rectifier adjustments in the appropriate stalls, to ensure saturation with the installation of the reactor unit of output DC voltage configuration to do to fully tap the potential of existing equipment, the saturable reactor control winding and control winding 8 displacement smooth rectifier output to meet the electrolysis production process requirements must be steady flow. The project through the rectifier devices operating in parallel, the success of the rectifier Soderberg 60KA 200KA equipment used in the production of large pre-baked anode, shorten the construction period, a new power supply system than the one-time investment of 4,000 million saving, economic and significant social benefits. And analysis on the basis of existing equipment, through the addition of self-saturable reactor means to achieve 8 units with different technical parameters of the rectifier operating in parallel, 7 sets of rectifier operation, 1 spare rectifier, a significant reduction in project investment, shortening the construction period, technological equipment is now running good and stable, safe, reliable, easy maintenance, comfortable, stable flow control test by the national authorities, the harmonic current in line with national industry policies. 96% conversion efficiency, power factor is 0.91, the current efficiency was 94%, its technical index has reached domestic leading level, and to solve environmental pollution problems for China's aluminum industry transformation Soderberg provides a new way . If you currently have 60KA Soderberg this program, companies have the technological transformation of the country around produces nearly billion in economic benefits, existing equipment and facilities are fully utilized, wasting assets directly to more than 150 countries to reduce billion, The success of technological innovation, a thorough treatment of environmental pollution, in order to achieve good economic returns. The project through the Information Institute of Science and Technology of Henan Province to review, 60KA Soderberg rectifier power supply equipment in 2O0I <A large-scale power system pre-baked anode technology, the successful implementation of the parallel rectifier 8, solid at home and abroad is a first, China's aluminum industry to fill a gap in history. Port high levels of carbon sub-liquor evaporation points of the technology will eventually make the carbon slurry evaporation of mother liquor containing crystalline solid concentration of the whole base 270g / I above, which resolved after increase of alumina clinker alkali balance problems, raw material Jiangshui were reduced by about 4% increase clinker production capacity of more than 8% kiln. This process is by the China Great Wall Aluminum Corporation of Zhongzhou Aluminum, in alumina production at home and abroad sintering plant, the first of its kind, indicators in the leading level. Control the concentration of carbon sub-liquor evaporation, cooling rate after discharge, making NaCO3 �� HO of crystallization in the evaporator tank outside the tank even precipitation. 2. By adding the seed, making crystallization of NaCO3 �� HO crystal agglomeration grew up, slowed down or even prevent the heated wall of the evaporator scaling and clogging. 3. Application of high flash device will help control the concentration of carbon sub-evaporating the mother liquor and cooling rate, in order to control the crystallization of NazCO3 �� HzO. Application situation: The technology is now applied to the first group of Plains aluminum evaporator, are transforming the other 3 groups to further promote the evaporator to achieve economic and social benefits: the 17.337 million yuan and annual benefits. * 61 *

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