Dish-type solar thermal and natural gas combined power generation system

Abstract

The invention discloses a dish-type solar photothermal and natural gas combined power generation system, which comprises a gas turbine power generation system, a waste heat boiler, a dish-type solar photothermal conversion system and a steam turbine. The steam turbine is connected with the second generator, the exhaust system of the gas turbine is connected with the flue gas and afterburning system of the waste heat boiler, the main steam outlet of the steam water system of the waste heat boiler is connected with the steam inlet system of the steam turbine, and the make-up water of the whole system directly enters the condenser . The invention organically combines the natural gas power generation system and the dish solar thermal power generation system to jointly generate power, and at the same time, supply steam to the outside as required. This joint power generation system can not only adjust the electric load to meet the demand of power supply, relieve the power supply pressure, reduce the consumption of gas, but also solve the problem that the disc solar thermal power generation system is not easy to store energy at night, and reduce the cost input , At the same time, the power generation system can also run continuously all year round, thereby improving the overall economic benefits of the project.

Description

technical field [0001] The invention relates to a power generation system, in particular to a dish-type solar thermal and natural gas combined power generation system. Background technique [0002] Natural gas power generation is one of the most stable distributed energy supply methods. An excellent combined cooling, heating and power generation system can increase the efficiency of gas power generation to over 95%. From the development experience of developed countries in the world and some Southeast Asian countries, the development of distributed gas-fired power generation systems is the only way to achieve energy conservation, emission reduction and sustainable development of energy supply. It is an irreversible trend in the development of the modern energy field, and it is the most promising way of energy supply. [0003] However, natural gas resources are non-renewable energy sources that are easily consumed after all, and natural gas resources are not inexhaustible, s...

AI Technical Summary

Problems solved by technology

[0004] Solar energy is an inexhaustible and best renewable energy all over the world, but the use of solar energy resources also has its constraints, the biggest constraint is that solar energy can only be used in sunny days during the day, It cannot be used on cloudy days and at night, which leads to discontinuity in energy utilization

In order to realize the continuous power generation of solar energy, it needs to spend huge financial resources to build a huge energy storage system. Not only the equipment and materials used for energy storage are very expensive, but also there are various constraints that are not easy to realize, and the realization is relatively difficult.

For example, the solar dish power generation system needs to use some kind of gas, liquid, etc. as the intermediate circulation medium, and ceramics, molten salt and other materials are used as the energy storage medium. Invisibly, two more circulation systems and equipment are added. The system is complex and engineering Bulky, expensive materials, high power consumption

Images