A technological process for high-efficiency waste heat recovery of chemical boilers

Abstract

The invention discloses an efficient waste heat recovery technological process for a chemical boiler. The efficient waste heat recovery technological process includes the following steps that S1, gas introduction in conducted, wherein high-temperature flue gas and vapor generated in the chemical boiler are introduced into an exhaust channel provided with a heat exchanger; S2, heat recovery is conducted, wherein heat absorbed by the heat exchanger is stored to a heat storage device, the heat storage device is connected with an electric energy converter, the electric energy converter is connected with a heating device of the chemical boiler, and heat in the heat storage device is converted into electric energy to be directly used for heating the chemical boiler; and S3, condensation is conducted, wherein lampblack and vapor exhausted by an exhaust channel enter a condensation device, liquid obtained through the condensation device enters a waste liquid treatment device, and gas is discharged after being treated through an air purifier and a waste gas treatment device. According to the technological process, the waste heat recovery rate is high, recovered heat is reused, waste of resources is avoided, and consumption of electric energy is saved. The technological process is simple, waste liquid and waste gas can be treated and then discharged, and pollution to the environment is avoided.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a technical process for recovering high-efficiency waste heat from a chemical boiler. Background technique [0002] The heating temperature of the chemical boiler is relatively high. There are carbon dioxide and nitrogen oxides in the flue gas generated in the boiler, which will cause environmental pollution when discharged into the air. However, the water vapor in the boiler cannot be condensed in time due to the high temperature in the boiler. , is not conducive to the use of boilers. If the large amount of waste heat generated by the boiler is not recovered, it will not only cause damage to the equipment, but also cause waste of heat and energy. There are few existing waste heat recovery processes, and most of them have low recovery efficiency. Toxic and harmful gases and water vapor cannot be recovered reasonably, causing pollution to the environment. Contents ...

AI Technical Summary

Problems solved by technology

[0002] The heating temperature of the chemical boiler is relatively high. There are carbon dioxide and nitrogen oxides in the flue gas generated in the boiler, which will cause environmental pollution when discharged into the air. However, the water vapor in the boiler cannot be condensed in time due to the high temperature in the boiler. , is not conducive to the use of the boiler

If the large amount of waste heat generated by the boiler is not recovered, it will not only cause damage to the equipment, but also cause waste of heat and energy.

There are few existing waste heat recovery processes, and most of the recovery efficiency is not high. Toxic and harmful gases and water vapor cannot be recovered reasonably, causing pollution to the environment