Exhaust air catalytic oxidation device utilizing supercritical CO2 solar heat collecting and storing for heating

Abstract

The invention provides an exhaust air catalytic oxidation device utilizing supercritical CO2 solar heat collecting and storing for heating, and belongs to the technical field of solar light heat utilization and exhaust air gas heat utilization. According to the technical scheme, a supercritical CO2 solar heat collecting subsystem, a fuse salt heat storage / heat exchange subsystem, a gas source concentration monitoring filter subsystem, a catalytic oxidation subsystem, a high-temperature smoke power generation subsystem, a heat supply tail end subsystem, a condensate water recycling subsystem, asmoke discharging subsystem and a running monitoring subsystem are included. A tower type solar heat collector is utilized for collecting solar focus heat, the good heat transfer character and transmission performance of supercritical CO2 are utilized, the exhaust air is heated in combination with the fuse salt heat storage technology, gas energy waste can be reduced, the utilization rate in theexhaust air gas catalytic oxidation process is increased, and the high-temperature smoke heat-into-power conversion efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of exhaust gas heat utilization, more specifically, to a method of utilizing supercritical CO 2 The exhaust air catalytic oxidation device heated by solar heat collection and heat storage. Background technique [0002] As an energy-saving and environmentally friendly heat collection device, the tower solar collector can make full use of the focusing characteristics of sunlight to generate heat, and control the working fluid in the collector to work in the high temperature range of 600-800°C; currently, molten salt is mostly used for heat storage The technology solves the shortcomings of solar intermittent operation and low energy density. However, molten salt working fluid has high density, high viscosity, and poor fluidity, which is not conducive to long-distance transportation. In contrast, supercritical CO 2 The working fluid has dual characteristics of gas and liquid, its density is close to that of li...

AI Technical Summary

Problems solved by technology

In a public report, a flow direction conversion reactor that periodically changes the feeding direction will cause part of the incompletely oxidized methane gas to be directly discharged into the atmosphere along with the hot air, resulting in secondary waste of gas energy

Moreover, the existing reaction devices mostly use high-temperature flue gas "self-heating", electric heating, exhaust gas recovery and other means to heat the exhaust gas. In the high-temperature flue gas "self-heating" technology, in order to heat the exhaust gas, the drum flue gas The temperature on the outlet side is high, the amount of steam generated by the steam drum is small, and the electric power output by the power generation system is not high; the application of electric heating technology increases the use of external electric energy; The concentration is reduced again, and the equipment control is difficult, and the operation and maintenance costs are high

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