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Zhong B.,Shenzhen Orient Boiler Control Co. | Li G.,Shenzhen Orient Boiler Control Co. | Qian F.,Shenzhen Orient Boiler Control Co. | Liu Y.-T.,Shenzhen Orient Boiler Control Co.
Reneng Dongli Gongcheng/Journal of Engineering for Thermal Energy and Power | Year: 2015

Described were the principles for the plasma ignition technology. For the Boiler No.4 of a 1036 MW ultra-supercritical coal-fired unit in a domestic power plant, a plasma ignition system equipped with low NOx plasma pulverized coal burners was designed. On this basis, the authors made it realized that the flow field formed by using plasma pulverized coal burners and the pulverized coal concentration distribution is controllable. The simulation calculation results by using the software Fluent and the practical operation effectiveness show that when the plasma pulverized coal burners serve as the ignition ones, the plasma ignition system can maintain a stable operation and has a high burn-out rate of the pulverized coal, the temperature and pressure rise speed of the boiler meeting the requirements stipulated in the operation specifications. When the plasma pulverized coal burners serve as the primary ones, the flow field and the pulverized coal concentration distribution originally designed for the boiler can be restored very well, thus guaranteeing that the performance of the boiler can meet the design requirement. ©, 2015, Reneng Dongli Gongcheng/Journal of Engineering for Thermal Energy and Power. All right reserved. Source

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