Exhaust gas inlet device and regenerative heat exchanger containing same

Abstract

The invention provides a regenerative heat exchanger utilizing waste heat in the cement production process. The heat exchanger comprises a first tube bundle, a second tube bundle, a high-temperature exhaust gas inlet, a high-temperature exhaust gas outlet, a low-temperature medium inlet, a low-temperature medium outlet and a shell. A plurality of heat storage materials are arranged in a shell of the heat exchanger and are stacked together. Each heat storage material is internally provided with a first tube hole and a second tube hole, wherein the first tube hole and the second tube hole are crossed. The first tube bundle and the second tube bundle penetrate through the first tube holes and the second tube holes respectively. The outer diameter of the first tube bundle is equal to the diameter of each first tube hole. The outer diameter of the second tube bundle is equal to the diameter of each second tube hole. The exhaust gas produced in the cement production process flows through the first tube bundle, low-temperature media flow through the second tube bundle, the exhaust gas enters the heat exchanger from the high-temperature exhaust gas inlet, passes through the first tube bundle and then is exhausted from the high-temperature exhaust gas outlet, and the low-temperature media enter the heat exchanger from the low-temperature medium inlet, passes through the second tube bundle and then is discharged from the low-temperature medium outlet. The regenerative heat exchanger fully utilizes waste heat in the cement production process, the heat exchange efficiency is maximized, energy is saved, and the purposes of environmental protection and energy conservation are achieved.

Description

technical field [0001] The invention relates to a regenerative heat exchanger for utilizing waste heat in a high-efficiency cement production process, and belongs to the field of heat exchangers of F28d. Background technique [0002] With the rapid development of my country's economy, energy consumption is increasing day by day, and the problem of deteriorating urban air quality is becoming more and more prominent. It is urgent to save energy and reduce the emission of harmful environmental substances. In the common thermal power field, one of the main reasons for high energy consumption and serious pollution is that the exhaust gas temperature of the flue gas is too high, which wastes a lot of energy and causes environmental pollution. The cement industry is a high energy consumption and high pollution industry. The waste heat power generation system in the cement industry can recover and reuse the waste heat of exhaust gas to achieve the purpose of energy saving and emiss...

AI Technical Summary

Problems solved by technology

However, the existing problems are that the structure of the heat storage and heat release system is complex, the heat exchanger for heat storage and heat release is large in size and high in cost, so it is necessary to improve the heat exchange equipment for the heat storage process

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