Intermediate temperature secondary medium pressure afterheat boiler system of float glass melting tank

Abstract

An intermediate temperature secondary medium pressure afterheat boiler system of a float glass melting tank of the invention relates to the afterheat boiler technical field of the float glass melting tank, aiming at solving the technical problems of great influence of melting tank gas fume parameter fluctuation on the boiler operation, low afterheat recovery rate, poor system stability and the like which exist in the intermediate temperature secondary medium pressure afterheat boiler system of the traditional float glass melting tank. A boiler body of the afterheat boiler of the invention is internally provided with a high temperature superheater, a low temperature superheater, an evaporator, an economizer and a deoxidation evaporator in turn; an outlet of the afterheat boiler is connected with an induced draft fan and a chimney; a deaerator is arranged at the top of the afterheat boiler and is communicated with a water pump and the deoxidation evaporator respectively; a water supply pump is communicated with the economizer which is communicated with a steam drum; and the steam drum is communicated with the low temperature superheater which is communicated with the high temperature superheater, and the high temperature superheater is communicated with an external steam using equipment; the bottom of the steam drum is communicated with the evaporator. The invention is applicable to the afterheat boiler for matching with the float glass melting tank.

Description

technical field [0001] The invention relates to the technical field of waste heat boilers, in particular to a waste heat boiler system matched with a float glass melting furnace. Background technique [0002] The energy consumption of industrial processes is dominated by fuel and electricity. Usually, the utilization rate of fuel is between 30% and 40%, and a large amount of residual energy will be generated, and most of the residual energy exists in the form of exhaust heat. If the exhaust gas waste heat resources are not recycled, it will not only waste energy, but also pollute the environment. Utilizing the waste heat resources of industrial processes to build waste heat power stations can realize "turning waste into treasure". [0003] Float glass melting furnaces in the glass industry usually use heavy oil, natural gas, coal gas, etc. as fuel, and the flue gas formed by the combustion of fuel in the furnace is discharged outside the furnace, which generates waste gas a...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems in the medium-temperature sub-medium pressure waste heat boiler system of the traditional float glass melting furnace that the fume parameter fluctuation of the melting furnace has a great influence on the operation of the boiler, the steam parameters of the boiler are unstable, the waste heat recovery utilization rate is low, and the system operation stability is poor, etc. Technical problem, in order to provide a float glass melting furnace medium temperature sub-medium pressure waste heat boiler system which is less affected by the fluctuating furnace flue gas parameters, stable boiler steam, high waste heat recovery utilization rate, and stable system operation

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