A device for stabilizing furnace pressure in a tft liquid crystal glass furnace

Abstract

The invention discloses a furnace pressure stabilizing device for a TFT liquid crystal glass kiln, which comprises a steel flue assembly, and a condensate cleaning assembly is arranged on the inside of the condensate nozzle of the steel flue assembly, and the bottom of the steel flue assembly is fixed. A condensate falling pipe assembly is installed. When there is condensate on the top of the inlet pipe of the steel flue, open the upper flap valve and close the lower flap valve to ensure that the entire steel flue is still in a sealed state, thereby ensuring the stability of the furnace pressure. Through the second The rotation of a drive motor and the cooperation of the internal thread translation block and the translation screw realize the telescopic translation of the semicircular condensate receiving tray in the steel flue inlet pipe. When cleaning the condensate, the semicircular condensate receiving tray extends into the steel fume In the entrance pipe of the channel, through the rotation of the second drive motor and the cooperation of the scraper rotation rod and the hexagonal guide rod, the condensate scraper can be scraped and rotated in the semicircular condensate receiving tray, and the scraped condensate will fall on the semicircular shape. In the condensate receiving tray.

Description

technical field [0001] The invention belongs to the technical field of TFT glass manufacture, and in particular relates to a furnace pressure stabilizing device for a TFT liquid crystal glass furnace. Background technique [0002] Liquid crystal glass belongs to borate glass, and the content of borides and nitrogen oxides in the flue gas is relatively high. In order to ensure that the flue gas discharge meets the standard, NCR and other treatments are required for the flue gas. During the process of flue gas from the furnace to the NCR reaction tower, It is necessary to reduce the boride and other dust in the flue gas. In the design, the front-end flue part (3 supplementary air pipe) is used to quickly cool down the temperature with cooling air, so that the boride and other dust can be quickly condensed to meet the process requirements, but the condensation at the mouth of the flue The blockage is serious, and there is a large amount of condensation at the bottom of the flue...

AI Technical Summary

Problems solved by technology

[0002] Liquid crystal glass belongs to borate glass, and the content of borides and nitrogen oxides in the flue gas is relatively high. In order to ensure that the flue gas discharge meets the standard, NCR and other treatments are required for the flue gas. During the process of flue gas from the furnace to the NCR reaction tower, It is necessary to reduce the boride and other dust in the flue gas. In the design, the front-end flue part (3 supplementary air pipe) is used to quickly cool down the temperature with cooling air, so that the boride and other dust can be quickly condensed to meet the process requirements, but the condensation at the mouth of the flue The blockage is serious, and there is a large amount of condensation at the bottom of the flue outlet, which blocks the mouth of the flue and affects the internal pressure of the kiln.

[0003] The existing technology has the following problems: in order to ensure normal furnace pressure and stable process, regular cleaning is required. At present, measures are taken to open the ash box of the flue and use stainless steel hooks (shovels) to take out (push out the flow) and other methods to ensure that The flue gas is normally discharged to stabilize the furnace pressure. Due to the design of the kiln, the cleaning site area is small, the condensate cleaned out is large in dust, high in temperature, and has a high glass-like viscosity. The platform needs to be cooled before it can be cleaned, which will affect the operation of peripheral equipment and personal safety. During the cleaning process, the flue mouth is often opened to form a large amount of supplementary air, resulting in large fluctuations in furnace pressure. Fluctuations in furnace pressure will cause glass liquid in the kiln. Fluctuation brings a large number of defects. In order to ensure the safety of the internal equipment in this area and the stability of the furnace pressure, it is necessary to improve the flue cleaning operation. There is a lack of a method that can clean the condensate without opening the flue, and at the same time can control the pressure in the furnace. The flue cleaning structure that does not cause fluctuations is not conducive to ensuring the normal furnace pressure and the stability of the process

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