Electric heating comprehensive energy storage peak shaving system of coal power unit and working method

A unit and peak-shaving technology, which is applied in heating systems, heating methods, mechanical equipment, etc., can solve the problems of less research and achieve the effects of high energy conversion efficiency, flexible energy conversion methods, and small footprint

Pending Publication Date: 2021-12-28
XIAN THERMAL POWER RES INST CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the context of new energy power consumption, in order to solve the problem of energy storage or heat storage of coal-fired power units in the non-heating period in the northern region, and the energy storage problem of units without industrial steam supply in the southern regio

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  • Electric heating comprehensive energy storage peak shaving system of coal power unit and working method
  • Electric heating comprehensive energy storage peak shaving system of coal power unit and working method

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0031] likefigure 1 As shown, a coal-fired power unit electric heating comprehensive energy storage peak-shaving system provided by the present invention includes a boiler 1, a steam turbine 2, a generator 3, a molten salt tank 4, molten salt 5, heat storage filler 6, and a molten salt electric heating tank 7. Molten salt electric heater 8, molten salt pump 9, steam heat exchanger 10, feed water heat exchanger 11, deaerator 12, feed water pump 13, first heating station 14, steam heat exchanger inlet pipe 15, steam Heat exchanger outlet pipe 16 , feed water heat exchanger inlet pipe 17 , feed water heat exchanger outlet pipe 18 and molten salt pipe 19 .

[0032] Molten salt tank 4, molten salt 5, thermal storage filler 6, molten salt electric heating tank 7, molten salt electric heater 8, molten salt pump 9, steam heat exchanger 10, feed water ...

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Abstract

The invention discloses an electric heating comprehensive energy storage peak shaving system of a coal power unit and a working method. A boiler, a steam turbine, a power generator and an auxiliary system of the coal power unit are coupled with a fused salt energy storage system, so that electric energy and high-temperature steam generated by the coal power unit can be stored in the fused salt energy storage system; and heat energy in the fused salt energy storage system can be output for heat supply and steam supply, or high-temperature steam is generated to be fed into the steam turbine again for power generation, flexible storage and flexible release of electric energy and heat energy are achieved, the adjustment flexibility of the coal power unit is improved, the capacity of the coal power unit for absorbing renewable energy for power generation can be effectively improved, and China is helped to achieve carbon peak reaching and carbon neutralization.

Description

technical field [0001] The invention belongs to the technical field of energy storage for coal-fired power units, and in particular relates to a peak-shaving system and working method for electric-thermal comprehensive energy storage of coal-fired power units. Background technique [0002] With the rapid development of wind power and photovoltaic power generation, the demand for flexible power sources in the power grid continues to increase, and the positioning of coal power in the power grid system is gradually changing from a power-based power source to a power-based and power-regulated power source. At present, units with better coal quality and equipment conditions can expand the unit load adjustment range from 50% to 100% of rated load to 30% to 100% of rated load through flexible transformation, and the increased 20% of rated load adjustment range can eliminate New energy power with the same capacity. However, some units are affected by coal quality and equipment cond...

Claims

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Application Information

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IPC IPC(8): F01K3/18F01K3/26F01K7/44F01D15/10F28D20/00F24D11/00
CPCF01K3/186F01K3/262F01K7/44F01D15/10F28D20/0034F24D11/004Y02E60/14Y02E70/30Y02A30/60
Inventor 周科张广才徐党旗晋中华李明皓鲁晓宇白永岗
Owner XIAN THERMAL POWER RES INST CO LTD
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