Two-phase flow phase change heat absorber

Abstract

The invention discloses a two-phase flow phase change heat absorber, which comprises a phase change heat absorption shell of which the front end and the rear end are independently provided with an airinlet and an air outlet; a plurality of phase change heat absorption sheets are arranged at intervals in sequence from front to back along a gas flowing direction in the phase change heat absorptionshell; each phase change heat absorption sheet structurally comprises an upper communicating pipe and a lower communicating pipe, which are vertically distributed; a plurality of heat absorption fin pipes arranged in rows at intervals between left and right are connected between the upper communicating pipe and the lower communicating pipe; the upper end and the lower end of each heat absorption fin pipe independently communicate with the upper communicating pipe and the lower communicating pipe; the lower communicating pipes of all phase change heat absorption sheets simultaneously communicate with a lower liquid collection pipe; the upper communicating pipes of all phase change heat absorption sheets simultaneously communicate with an upper gas collection pipe; the upper gas collection pipe is provided with a steam pipe with a valve; and a thermocouple used for detecting the temperature of working medium steam in the upper gas collection pipe, and a temperature regulator are arrangedin the upper gas collection pipe. The two-phase flow phase change heat absorber has the advantages of energy saving and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of energy-saving equipment in industries such as electric power, chemical industry and metallurgy, and in particular to a two-phase flow phase change heat absorber. Background technique [0002] Boiler exhaust heat loss is one of the main heat losses in power plant boilers. Exhaust heat loss accounts for the largest proportion of all heat losses in famous coal-fired boilers, accounting for more than 75% of the total heat loss of coal-fired boilers. The main factor leading to the heat loss of the exhaust gas is the exhaust gas temperature. Generally, when the temperature of the exhaust gas increases by 10°C, the heat loss of the exhaust gas increases by 0.6%-1%, and the heat consumption increases by 1.2%-2.4%. In addition, too high exhaust gas temperature will not only seriously reduce the utilization rate of energy, but also greatly affect the subsequent desulfurization flue gas treatment system for flue gas...

AI Technical Summary

Problems solved by technology

The main factor leading to the heat loss of exhaust gas is the exhaust gas temperature. In general, when the temperature of exhaust gas increases by 10°C, the heat loss of exhaust gas increases by 0.6%-1%, and the heat consumption increases by 1.2%-2.4%.

In addition, too high exhaust gas temperature will not only seriously reduce the utilization rate of energy, but also greatly affect the subsequent desulfurization flue gas treatment system for flue gas treatment, reduce the dust removal efficiency of the dust collector, and increase the water consumption of the desulfurization tower

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