Asia's largest lignite tower boiler generator set to transfer production
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The unit has achieved 14 boiler water pressure, ignition and grid-connected power generation successes at one time, and at 17:17 on October 17th, the unit has a high load standard of 670 MW, and has smoothly entered the 168-hour test run, with automatic and protective investment rates. The correct operating rate is 100%. This move opened a new page for the construction of domestically-made supercritical tower furnace units, filling another gap in China's thermal power generating units.
This project is a key power project in the “Eleventh Five-Year Plan†of the Northeast Electric Power Industry. After the completion of the project, it will support and consolidate the voltage stability of the central power grid in Jilin Province, and at the same time improve the stability of Jilin and Heibei Sections of the Northeast Power Grid. In order to enhance north-east power transmission capacity of the Northeast Power Grid, it plays a crucial role. The project planning capacity is 4 × 660MW units, leaving room for expansion. In the first phase, a 2×660MW domestic supercritical coal-fired unit was built. The boiler was the first tower-type lignite boiler that was designed and manufactured in China. It was also the first time that a domestic thermal bus was deployed in the country, and a simultaneous input flue gas desulfurization unit was simultaneously built. This is not only the outstanding feature of the project, but also the highlight of the construction company of the Heilongjiang Province Thermal Power Generation Corporation who are responsible for the construction task. The tower boiler with low calorific value and lignite fuel is a progress in the design and manufacture of boilers for thermal power generation in China. It has made outstanding contributions to the advancement of energy conservation, emission reduction and purification of the environment. It is an advancement of China's national power industry and is a domestic supercritical tower type. The construction of the furnace opened a new page.
It is understood that the elevation of the steel structure of this type of boiler unit exceeds the level of one million units, and its welding volume and installation work volume exceed the workload of domestic imported 1000 MW units. Since the start of the project, Heilongjiang Thermal Power Company has always made the creation of Guoyou the highest goal. According to the implementation plan for creating the country, the company has been “creating the project quality with process quality†to strengthen the quality control of the implementation process and ensure the intrinsic quality and appearance of the project. In the construction, they earnestly implemented the responsibility system for quality process control, zero-defect responsibility system and quality responsibility system. The process acceptance highlights a "strict" character, and the whole process of the special process is monitored to ensure the construction quality.
The project was officially started on May 13, 2007, and it took more than 890 days for grid-connected power generation. Among them, the steam turbine body installation took only 37 days from the arrival of the rotor to the end of the three-cylinder closure, which was 6 years earlier than the fastest construction record in the country. Days; boiler steel frame lifted to ignite successfully with 358 days, the construction period is 12 months ahead of the planned schedule, creating a national record of the advanced construction period; July 5 boiler water pressure to August 20th ignition torch for 45 days; August 31 The day when the torch is blown to 9 September, the entire start-up takes only 9 days. After the 168-hour trial run on October 17, the maximum shaft vibration is 0.066 mm. It has reached an excellent standard of less than 0.076 mm shaft vibration; vacuum tightness, power generation The tightness of the hydrogen system of the machine has reached the advanced level, in which the unit has realized no need for replenishment for seven consecutive days; various protection investment rates and correct rates have all been achieved.