Method and system for combing solar energy thermal power generation with biomass power generation

A technology of solar thermal power generation and biomass power generation, which is applied in the direction of solar thermal power generation, steam generation method, and mechanical power generation by solar energy, etc., can solve the problems of low calorific value of biomass and huge amount of raw materials, etc., so as to improve power generation efficiency and reduce Purchasing cost and consumption saving effect

Active Publication Date: 2010-11-03
北京京仪集团有限公司
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Problems solved by technology

However, due to the low calorific value of biomass itself, although a single biomass power generation system can guarantee 24-

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  • Method and system for combing solar energy thermal power generation with biomass power generation

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, the present invention mainly includes a solar heat collection system 1, a molten salt heat storage system 2, a biomass combustion system 3, a thermoelectric conversion system 4 and a control system.

[0018] The solar heat collection system 1 of the present invention mainly includes a heat collection field 11 , a solar superheater 12 , a steam generator 13 , a preheater 14 , a high temperature oil pump 15 and an expansion tank 16 . In the heat collecting field 11 of the present invention, a plurality of heat collecting units are arranged in series or in parallel, and each heat collecting unit is similar to the trough line focusing system in the prior art, including a parabolic trough reflector, a sun tracking device and a heat collecting tube and other equipment (not shown in the figure). The sun tracking device is ...

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Abstract

The invention relates to a method and a system for combining solar energy thermal power generation with biomass power generation. When the method is used for generating electricity in the daytime (a fine day), one path of heat transfer oil heated in a heat collection field passes through a heat exchanger to ensure that counter-flow water is heated up into superheated steam at the temperature of between 360 and 380 DEG C; and the other path of the heat transfer oil heated in the heat collection field passes through the heat exchanger to heat up a fused salt so as to perform energy storage. The water heated in a water cooled wall of a biomass boiler is changed into steam which enters a steam header and a steam-water separator, then is heated to the temperature of between 535 and 545 DDEG C after being sent into a super-heater of the boiler together with the steam at the temperature of between 360 and 380 DEG C, and then is supplied to a steam turbine to drive a generator to finish the power generation process. During receiving electric valley adjustment, the biomass boiler maintains the minimum stable combustion state. The self power generation of the method and the system can be used for supplying electricity to an electric heater in a fused salt heat storage system to heat the fused salt and perform secondary energy storage for a fused salt heat tank. During the night, or when a solar energy condition is not good, the heat energy stored in the fused salt is released by the heat exchanger to generate electricity.

Description

technical field [0001] The invention relates to a power generation method and system, in particular to a method and system combining solar thermal power generation with biomass power generation. Background technique [0002] Solar thermal power generation and biomass power generation are two important renewable energy utilization methods, which are closely watched by energy researchers all over the world. in: [0003] Solar thermal power generation is the use of heat collectors to convert solar radiation energy into heat energy and generate electricity through a thermodynamic cycle process. According to different concentrating methods, solar thermal power generation systems are roughly divided into three categories: trough line focusing system, tower system and dish system. At present, the commercialization of the trough solar thermal power generation system is the most successful, but its concentration ratio is low, and the temperature of the water vapor generated general...

Claims

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Application Information

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IPC IPC(8): F03G6/06F01D15/10F22B1/00F22G1/00
CPCY02E10/46
Inventor 徐伟新郑兆文左云波刘宝礼徐锦丹沈亮朱美忠张忠轩
Owner 北京京仪集团有限公司
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