Heat exchange and heat storage device for biogas power generation high-temperature exhaust air

Abstract

The invention relates to a heat exchange and heat storage device suitable for biogas power generation high-temperature exhaust air. The device comprises a heat exchange tank, a water storage part arranged in the heat exchange tank, and a heat source conveying part and a heat storage part arranged in the water storage part in a sleeved mode; the heat source conveying part comprises a heat source discharge pipe arranged on the axial center line of the heat exchange tank, and a heat source layer arranged out of the heat source discharge pipe; the heat source layer is provided with an input pipe;the heat source discharge pipe and the heat source layer communicate by a first channel; the water storage part comprises a spiral pipe coiled out of the heat source discharge pipe, and a water storage layer; the water storage layer and the spiral pipe communicate through a second channel; the spiral pipe is provided with a drainage pipe; the water storage layer is provided with a water inlet pipe; the heat storage part comprises a heat storage layer annularly arranged out of the spiral pipe; and the heat storage layer is filled with a heat storage medium. The device can realize multistage heat exchange of the heat exchange device, and can reasonably control the smoke temperature to prevent the device corrosion caused by quicker reduction of the smoke temperature.

Description

technical field [0001] The invention belongs to the technical field of heat exchange tanks, and in particular relates to a heat exchange heat storage device suitable for high-temperature exhaust gas in biogas power generation. Background technique [0002] The smog problem caused by energy consumption is constantly attracting people's attention, and it is imminent to adjust the energy structure, otherwise it will further restrict the development of my country's economy and society. Therefore, the development and utilization of renewable energy has gradually become a national policy of our country. Biomass energy, as a clean and renewable energy source, is beneficial when used and waste when discarded. It is the only alternative fossil energy that can be converted into gaseous, liquid, and Carbon resources of solid fuels and other chemical raw materials or products. Utilizing biomass biogas to generate electricity is an important means of reusing waste resources and is of gr...

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Problems solved by technology

However, due to the phase change of high-temperature exhaust gas in the process of heat storage and heat exchange, and in the process of flue gas temperature drop, excessive cooling will cause corrosion of existing heat exchange devices, so a method that can reasonably control flue gas is required. temperature heat exchanger

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