Radiant pipe combustion performance thermal simulation test furnace and method
A combustion performance and radiant tube technology, applied in the direction of combustion method, burner, combustion type, etc., can solve the problem of difficult detection of radiant tube flame combustion state, achieve the effects of reducing emissions, reducing fuel consumption, and improving combustion efficiency
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[0048] Example 1:
[0049] The annual output of 500,000 tons of cold rolling continuous unrolling uses mixed gas fuel. The W-type radiant tube was installed in the thermal simulation experimental furnace, and the same mixed gas was used as the fuel to test the thermal performance of the radiant tube combustion. 40 thermocouples were used to detect the uniformity of the wall temperature of the radiant tube, the thermal efficiency of the radiant tube, the thermal efficiency of the heat exchanger, and the amount of returned flue gas. The air-fuel ratio and suction parameters were optimized through thermal performance testing. The optimized parameters are applied in actual production, and the unit consumption of continuous annealing is reduced from 0.927GJ / t to 0.895GJ / t, a decrease of 3.45%, and the NOx emission is reduced from the original 105ppm to 79ppm.
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[0050] Example 2:
[0051] A silicon steel plant uses a drying furnace with coke oven gas as the fuel, and the U-shaped radiant tube used in it is installed in the thermal simulation experimental furnace. The same coke oven gas is used as the fuel to test the thermal performance of the radiant tube combustion. 30 thermocouples were used to detect the uniformity of the wall temperature of the radiant tube, and the thermal efficiency of the radiant tube and the heat exchanger were also detected. Through thermal performance testing, thermal parameters are obtained, which are used for the development and research of a new type of radiant tube complete set of high-efficiency and low-nitrogen large-return flue gas circulation. After the practical application of the new product, the combustion efficiency of the radiant tube is 99.9%, the thermal efficiency of the radiant tube is greater than 70%, and the maximum temperature difference of the radiant tube wall temperature is less than...
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[0052] Example 3:
[0053] The hot-dip galvanizing furnace with an annual output of 620,000 tons uses mixed gas as fuel. The W-type radiant tube used was installed on the thermal simulation experimental furnace, and the same mixed gas was used as the fuel to test the combustion performance of the radiant tube heating. 40 thermocouples were used to detect the uniformity of the wall temperature of the radiant tube, and the thermal efficiency of the radiant tube and the heat exchanger were also detected. Through the thermal performance test, the combustion parameters of air-fuel ratio are optimized, the heating capacity of the radiant tube in the F2 section is improved, and the production energy efficiency of the continuous hot-dip galvanizing furnace is improved by 1.1%.
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