A Coke Oven Heating Control Method with Constant-pressure Coal Gas Blending
A heating control and coke oven technology, which is applied in the heating of coke ovens, combustible gas heating coke ovens, coke ovens, etc., can solve the problem of frequent work, heating order and natural environment pollution, timely adjustment of mixing amount and flue suction, etc. problems, to achieve the effect of alleviating gas emission, promoting environmental protection, and achieving significant social benefits
Active Publication Date: 2016-07-06
宣化钢铁集团有限责任公司
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Problems solved by technology
Manually increasing or decreasing the given value control not only works frequently, but also cannot timely adjust the blending amount and flue suction according to the pressure change of coke oven gas, and the adjustment lag is arbitrary, resulting in low pressure in the gas pipeline network and gas release, giving normal The heating order and the natural environment cause pollution
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[0050] The present invention provides a method for automatically blending coke oven heating control with gas at a constant pressure. The method establishes a relationship between the pressure of the coke oven gas mains, the coke oven gas blending volume, the calorific value ratio of the blast furnace and coke oven gas, and the blast furnace gas flow rate. The mathematical model provides the calculation formula of the coke oven gas blending amount and the corresponding blast furnace gas flow setting value after the coke oven gas is blended.
[0051] The first method is to consider the mixing principle of coke oven gas; the second is to effectively combine the pressure of the main pipe with the mixing flow rate of coke oven gas to avoid gas venting due to excessive pressure; the third is to consider the amount of mixing The influence of changes on the heating value of mixed gas, according to the blending amount and heating value changes, the blast furnace gas flow is accurately adju...
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The invention relates to a coke oven heating control method for constant-pressure coal gas blending, which belongs to the technical field of coke oven heating control methods and is used for automatic control of coke oven blending heating. The technical solution is: online monitoring of coke oven gas main pipe pressure, blast furnace gas flow, coke oven gas flow for mixing, and flue suction; establish a mathematical formula for calculating coke oven gas blending flow, and calculate coke oven gas incorporation based on measurement data amount; establish a mathematical formula for calculating the blast furnace gas flow rate, and calculate the set flow rate of blast furnace gas according to the coke oven gas flow rate mixed in; establish a mathematical formula for calculating the sub-flue suction, and calculate it based on the blast furnace gas mixing percentage of the coke oven gas mixed in Coke oven machine, coke side branch flue suction setting value. The invention can adjust the coke oven gas blending amount according to the gas main pipe pressure according to the calculation formula, realize automatic coke oven gas blending and heating, and effectively alleviate the occurrence of gas due to excessive gas pressure in the pipe network under the premise of ensuring the normal production of the coke oven. The phenomenon of dispersal.
Description
Technical field [0001] The invention relates to a method for automatically blending coke oven heating control under constant pressure gas, and belongs to the technical field of coke oven heating control methods. Background technique [0002] In coking production, coke oven heating control is a key link in coking production. The temperature control effect will directly affect the normal production of coking, the quality of coking products, the life of coke ovens, the use of energy, and environmental protection. . In actual production, the gas flow and pressure of the coking plant are affected by the production conditions of the blast furnace gas and coke oven gas users. In order to ensure the external gas supply and balance the system pressure, the coking plant uses coke oven gas and blast furnace gas to heat the overall arrangement. Furnace heating gas needs to switch the heating gas in time and flexibly control the mixing amount of coke oven gas to balance the gas pressure in t...
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IPC IPC(8): C10B21/10
Inventor 孙风江郭有林李巨兵闫小平李强李祥岳进杜玉海赵瑞新郭永贵
Owner 宣化钢铁集团有限责任公司