IMPROVEMENT OF THE CONDITIONS OF DISPERSAL OF HARMFUL EMISSIONS FROM GLASS FURNACES IN CASE USING HEAT-RECOVERY TECHNOLOGIES
Abstract
The purpose of this study is to improve the operating modes of chimneys of gas-burning glass melting furnaces by applying the methods of their ecologization in systems for using the waste heat of furnace gases.
Known methods of thermal calculation of heat-exchangers and chimneys and methods for dispersing harmful emissions from thermal power plants in the environment were used. For the first time, the effectiveness of the proposed methods of greening to improve the conditions for dispersing harmful emissions from gas-burning glass melting furnaces in the environment under the conditions of using heat-recovery technologies has been studied. The results obtained will be used in the development of energy-efficient gas-burning thermal installations for technological purposes.
Computational studies have been carried out to improve the safety of operation of chimneys of regenerative-type glass melting furnaces by using technologies for recovering the waste heat of furnace gases using water and air-heating heat-exchangers and chimneys of various designs.
The influence of structural features of chimneys on their operating modes by using heat-recovery technologies with water and air-heating heat-exchangers is studied.
It is proposed to increase the environmental efficiency and operational reliability of chimneys by using the thermal method of bypassing a part of waste gases exhausted from regenerators past the heat-recovery equipment in heat-recovery technologies. An analysis of the effectiveness of this method to improve the ground-level concentrations of harmful emissions from furnaces by using the proposed heat-recovery systems was carried out. This method is more efficient for heat-recovery systems with water heat-recovery exchangers, is shown. Thus, with an increase in the share of waste-gas bypass from 0 to 40 %, the values of the coefficient showing the relative change in the maximum surface concentrations of harmful emissions increase to 6.5 % for heat-recovery systems with air-heating heat-exchangers and up to 30% by using water-heating heat-exchangers.
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