0.6 kg/kWh
The power generation water consumption rate of the unit parameter of 300,000 kilowatts shall refer to the consumption rate of water of the 300,000 kilowatt unit of the thermal power plant, excluding hydraulic ash removal and auxiliary equipment. Cooling water, coal yard water, domestic water, etc. refer to normal water replenishment of the unit's circulating cooling system and boiler replenishment water.
Therefore, according to the requirements of 14.1.4 of “Technical Regulation DL 5000-2000 for the design of thermal power plants”, the rate of water consumption for electricity production should not exceed design regulations. However, in the actual production process, based on various production management factors, the water consumption rate for power generation generally changes towards the indimanagement factors for first-rate thermal power plants. According to relevant reports, the water consumption rate of the best water-saving generator per unit of power generation can reach less than 3.6 kg/kWh. Of course, this is related to the unit type.
Detailed Information
Shanghai Heavy Machinery Factory Co., Ltd. and others are responsible for high and medium pressure cylinder trial production, forming fusion, casting, heat treatment, welding repair, etc. Complete production process, the product was used in a 600MW steam turbine.
After many failures in the development of high-voltage rotors, we finally solved the problem of smelting high-alloy low-silicon and aluminum steels, developed under-slag remelting technology electrical protected by nitrogen and successfully tested - produces a high voltage rotor, ofux rotors for the product in production. Austenitic stainless steel pipe is developed by the special steel branch of Baoshan Iron and Steel Co., Ltd. and participated by Shanghai Boiler Works Co., Ltd. The metallurgical quality of the domestic pipe is equivalent to the level of imported materials, and the durable strength can reach 99 MPa at a high temperature of 650°C.
High temperature and high strength materials for blades and bolts developed by Shanghai Steam Turbine Co., Ltd. and others have been industrialized, with an annual production of around 600 tons. Generators installed with this component in power plants such as Huangdao in Shandong and Suxian in Anhui have been put into normal operation. The high-strength screw material for turbine generators developed by Shanghai Xinmin Heavy Forging Co., Ltd. and others has been used successfully in 1000 MW generators.
Selon expert estimates, once the project is completed, the cost of ultra-supercritical units could be cut in half. The outline of China's "Eleventh Five-Year Plan" proposes "to optimize the development of thermal power by emphasizing large-scale, high-efficiency and environmentally friendly units, and to build large ultra-supercritical power plants and large power plants” large-scale air-cooled power plants. The “Medium and Long-Term National Science and Technology Development Plan” clearly lists energy as a priority development area and clearly proposes technologies such as high-parameter ultra-supercritical units under the theme “Clean and Efficient Development and Utilization ". Coal, Liquefaction and Polygeneration".
Baidu Encyclopedia-Ultra-supercritical unit