Tsinghua University

University of Science and Technology Beijing

Weiwei Yang

Jian Qiao Sun

Yi Shan Jiang

Xin Qi

Jian Sun

Lin Fu

Xiling Zhao

Shigang Zhang

Ji Luo

Yanting Wu

Zhimeng Guo

Cunguang Chen

Changlei Xiao

Daoke Tang

Huiqin Cao

An inner power plant portion and a heat exchange station portion. The inner power plant portion includes a heat exchanger, a waste heat recovery electric heat pump, an energy-storing electric heat pump, high/low temperature water storing tanks, a heating network heater, a valve and a circulating water pump; the heat exchange station portion includes high/low temperature water storing tanks, an electric heat pump, a heat exchanger, a valve and a circulating water pump; as for the operating method of the device, the device can operate in periods of an electrical load trough, an electrical load flat and an electrical load peak respectively through combination of different valve switches, the high temperature water storing tank is used for balancing the difference between system heat supply amount and heating load, the low temperature water storing tank is used for stabilizing steam exhaust waste heat recovery amount.

Electric power peak-shaving and combined heat and power waste heat recovery device and operation method thereof

The invention provides an industrial method for producing dispersion-strengthened iron-based materials at low cost and in large-scale. The industrial acid pickling waste solution is treated by spray roasting process after yttrium chloride is added. During the spray roasting process, the solution is atomized into fine droplets, the droplets are contacted with gas and dried into powders, which are heated in air to form metal oxides. The mixed powders of the metal oxides are reduced in hydrogen stream to obtain yttria dispersion-strengthened iron powders. High performance dispersion-strengthened iron materials are obtained by densifying the yttria dispersion-strengthened iron powders. The method has simple process and low cost, and is suitable for large-scale production due to the direct use of acid pickling waste solution from steel factory.

Industrial method for producing dispersion-strengthened iron-based materials at low cost and in large-scale

Growing community of inventors

Beijing, China

Weiwei Yang