Huadian thermal power plant denitrification project successfully trial operation

The denitrification project of Unit 6 of Hualiquan Power Plant passed the 168 test run at 21:00 on July 16th, laying a solid foundation for the acceptance of the next environmental protection project and the fulfillment of the denitrification price, indicating a new breakthrough in the environmental protection work of the plant.

As the group's “6-30” project, the No. 6 unit's flue gas denitrification transformation technology adopts a low-nitrogen burner + SCR method. In August 2012, it used a minor repair opportunity to complete the transformation of the low-nitrogen burner, and SCR denitrification transformation in 2013. January 13 officially started, the total duration of 170 days. The project was constructed by Qingdao Huatuo Technology Co., Ltd. and the supervisor was Shandong Jinan Zhongdalian Engineering Consulting Co., Ltd. The SCR and public ammonia zone construction will be carried out during this transformation. The inlet NOX concentration of the SCR system design will be 400mg/m3 and the NOX concentration at the outlet will be 100mg/m3, which can meet the latest requirements for air pollutant discharge standards. In order to ensure the completion of high-quality projects on schedule, the plant has overcome the unfavorable factors such as heavy workload, incomplete drawings, and short construction schedules. It has also completed the reactor flue gas, catalysts and seals. Installation, ammonia injection test and other work. At 21:00 on July 9, 2013, the No. 6 denitrification device of this plant was reviewed by the special design for safety facilities, reviewed by the emergency plan, reviewed the trial production plan, and passed on-site environmental protection test conditions. It was unanimously approved by the local authorities at all levels and considered After complying with related requirements, the denitrification renovation project entered the 168 trial operation. In order to further gain acceptance of environmental protection as soon as possible, the plant actively communicated and coordinated with the provincial CAS, and completed the relevant inspections of the denitrification renovation project. During the trial operation, the nitrogen oxide emission index, ammonia injection rate, and denitrification efficiency all meet design and environmental emission requirements.

With the national inclusion of nitrogen oxides as a major pollutant control indicator for the “Twelfth Five-Year Plan” and the proposed control objective to reduce by 10% in 2015 based on the total amount of nitrogen oxides emitted in 2015, Shiliquan Power Plant actively studied the atmosphere. The pollution discharge standards and the “Twelfth Five-Year Plan” emission reduction policy have listed unit denitrification as a key environmental protection task. In order to successfully complete the “12th Five-Year” nitrogen oxide emission reduction target responsibility book task, it is planned to complete the operation of Unit 7 at the beginning of 2014. Denitrification technology transformation task. At present, the plant is continuously deepening the environmental protection work results, making full use of the experience of the 6th unit flue gas denitrification renovation, and taking the opportunity of overhaul of the 7th unit to steadily carry out the denitrification technological transformation of the 7th unit, and strive to build an environment-friendly enterprise. Greater contribution.