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Reasons why the upper temperature of gas stoves often gets too high

2011-09-08View Original

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Recently, the upper temperature of the gas stove has been consistently too high; seeking help to understand the reason
Reply #22011-09-09
A gas generator is a device used to produce gas. Today, we will focus on analyzing what methods can be used to prevent the temperature of the gas generator from rising too high As excessive saturated steam enters the bottom of the furnace and reaches the oxidation layer, the temperature of this layer drops. As a result, the amount of carbon dioxide is low, and there isn’t enough temperature for reduction reactions to take place. Water vapor cannot be decomposed in the oxidation layer, let alone react with carbon. As a result, the gas has a high carbon dioxide content, a low carbon monoxide content, and high moisture content. Due to the low temperature of the oxide layer, a large amount of coal lumps did not gasify; the ungasified carbon accounted for over 20%, and in some industrial gasifiers this figure reached 30%, resulting in astonishing waste. How does the material enter the ball mill? To address this issue, adjust the saturation temperature so as to reduce the amount of steam that vaporizes inside the furnace, thereby increasing the temperature required for reducing the oxide layer. At the same time, pay attention to the changes in the gray layer. Due to the reduced amount of steam, the oxidation layer burns more vigorously; the gas furnace in the carbonization section ignites the unoxidized carbon in the lower ash layer and causes it to burn downward. At the same time, the oxide layer burns upward, resulting in a phenomenon of two flame layers. To address the issue of two flame layers, the cylinder annealing furnace must extinguish the lower flame layer; otherwise, it will damage the furnace and lead to losses such as shutdowns and production interruptions. Method to extinguish the lower fire layer: Increase the steam supply and operate mainly with the lower fire layer. After adjustment, the car-type heating furnace reduces the amount of steam entering the furnace to normal levels. Given China’s basic national conditions, it is quite difficult to widely adopt fuel, gas, or electricity as energy sources due to considerations related to energy supply and economic affordability; except in a few cities or economically developed areas, coal will remain the primary fuel source for a long time to come. Practice has shown that, by leveraging abundant resources of gasifiable coal varieties and utilizing the mature fixed-bed coal gasification process to produce gas at the furnace site, and then using this hot gas for combustion, it is the most effective and cost-effective method for changing the fuel composition and combustion methods in industrial furnaces, small boilers, tea bath heaters, etc. The Beijing Institute of Coal Chemistry, under the China National Coal Science Research Institute, has developed a coal gasification technology suitable for use in furnaces with low gas consumption, large fluctuations in load, and high requirements for safe operation. This technology is now being applied in the heating processes of small boilers and industrial furnaces, where the hot gas is used directly as fuel; it has achieved good results in terms of reducing pollutant emissions, improving efficiency, and enhancing operational performance. For fixed-bed gasifiers, the thermal stability of coal is an important factor affecting normal gasification operations. Taida’s lignite dryers use a new process; if the coal has poor thermal stability, it will crack and break upon being fed into the gas furnace, which in turn increases the resistance inside the furnace and the amount of material that needs to be removed. In a single-stage gas furnace, when coal enters the furnace and is suddenly exposed to high temperatures, it undergoes rapid thermal decomposition. In a cylinder annealing furnace, the volatile components in the coal are released quickly, causing the coal blocks to burst and break into pieces ; In the two-stage gas generator, the dry distillation section is tall and the coal layer is thick; as a result, the coal particles inside the furnace are heated slowly, and the water and volatiles in the coal evaporate at a relatively slow pace, which does not cause much stress on the coal layer. Therefore, the requirements regarding the thermal stability of the coal in a two-stage gas generator can be relaxed to some extent. For example, lignite with poor thermal stability can also be used in a two-stage gas generator for gasification, with a car-type heating furnace. Solutions for abnormal vibrations during the operation of rotary kiln equipment. Gas furnaces reduce costs and increase profits by saving energy. Meets environmental standards due to gas-related operations. With rising energy costs and increasingly strict environmental regulations, using a gas generator is the best choice for you. Shanghai Yongxian Machinery specializes in the production of gas generator equipment such as single-stage gas generators, two-stage gas generators, and chain grate furnaces! Yongxian provides you with comprehensive pre-sales, in-sales, and after-sales services!

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