Rational distribution of the thermal load along a glass-melting tank

Tarbeev, V. V.; Khvatkov, N. P.; Иванов, В. А.

doi:10.1007/bf02681355

Glass Ceram

1999

DOI: 10.1007/bf02681355

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Rational distribution of the thermal load along a glass-melting tank

V. V. Tarbeev

N. P. Khvatkov

В. А. Иванов

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2005

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“…The maximum temperature zone, as a rule, is oriented toward the middle of the clarification zone [5]. There are different opinions regarding the position of the temperature maximum, as applied to furnaces with a lateral flame direction: in the middle of the melting tank [6], at a distance of 2/3 of the tank length from the charging hopper [4]; near or above the spillway [7]. At the same time, the authors in [8] note that the quellpunkt position along the length of the tank is not clearly determined and does not always coincide with the temperature maximum.…”

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“…Temperature levels for the particular zones are specified based on practical data. For a furnace with the specific glass melt output over 2 tons/m 2 per day the maximum temperature can reach 1600°C [6]. Considering the service temperature constraint on the silica brick roof, the method of stabilizing temperature in the working space by varying the fuel rate appears questionable.…”

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Methods for Controlling Thermal Performance of the Glass-Melting Furnace

Dzyuzer¹,

Shvydkii²,

Klimychev³

2005

Glass Ceram

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The specifics and control algorithms of thermal performance of a glass-melting furnace are described. The methods for setting and monitoring the temperature regulation parameters in the working space are analyzed. The results of calculation of the fuel rate, the maximum roof and glass melt temperatures, and their positions along the furnace depending on its output are given. The advantages of using a mathematical model for the construction of an automated control system for the thermal performance of the glass-melting furnace is demonstrated.The thermal performance of a furnace is understood as a set of heat and mass exchange processes implemented for a prescribed technological process. One of the main conditions of the effective performance of continuous glass-melting furnaces consist in specifying rational regime parameters accepted in glass melting; another condition is ensuring the stability of these parameters. Clearly, to obtain high-quality glass with minimum energy consumption, both conditions have to be satisfied, as they are interrelated and interdependent. The practical implementation of these conditions constitutes the essence of controlling the thermal performance of the furnace.The automation of the mutifactor glass-melting process implies the existence of transfer functions between the main values characterizing the quality of the glass melt and the parameters of the thermal performance of the furnace. In the ideal case we mean the formalization of the "controlled parameters of furnace performance -glass quality" relation. However, the existing methods for estimating the known glass quality parameters are not automated and do not provide a sufficient frequency of measurements to control the glass-melting process. Therefore, in practice the control of the thermal performance depends on certain arbitrary parameters, which to a certain extent determine the quality of glass. These parameters include the value and distribution of temperature in the working space of the furnace, the pressure and composition of the gaseous medium, admissible fluctuations of the glass melt level, etc. The control of these parameters is performed using local automatic systems that are not logically related to each other. Their contemporary evolution is directed to improving control algorithms, increasing the reliability of hardware components of the systems (control sensors, regulators, microprocessors, etc.), expanding the range of information services for the personnel, etc. At the same rime, the methodical basis of control systems has remained unchanged for several decades, although the design of the furnace and its operating intensity have undergone substantial modifications.According to automatic control parameters, including temperature, a glass-melting furnace is a static object [1]. In this context the notion of "controlling the temperature regime of the furnace" understood as temperature variation in time appears incorrect. Therefore, one of the main systems of automated control of the thermal operation of a glass-...

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confidence: 99%

mentioning

confidence: 99%

Methods for Controlling Thermal Performance of the Glass-Melting Furnace

Dzyuzer¹,

Shvydkii²,

Klimychev³

2005

Glass Ceram

View full text Add to dashboard Cite

show abstract

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Rational distribution of the thermal load along a glass-melting tank

Cited by 1 publication

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Methods for Controlling Thermal Performance of the Glass-Melting Furnace

Methods for Controlling Thermal Performance of the Glass-Melting Furnace

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