A tubular electric furnace gas needs to warm up 
 The same volume of the tube furnace gas heat is much lower than the coke oven gas, usually 3300-4200KJ/m3. Low calorific value of the tube furnace gas is not easy burning in order to improve the thermal effects of burning, in addition to the air needs to warm up, high-temperature furnace tube furnace gas must warm-up. Regenerator tube furnace gas heating, combustion system updraft, half of it to preheat the air and the other half used to preheat the gas. Gas and air for combustion into the combustion chamber flue after the ramps. 
 Second, the combustion system of the resistance 
 Tube furnace gas heating, the consumption of high heat (about 15% of the generally higher than the coke oven gas) emissions generated, and the density, and thus the resistance. Increase airflow for entry less the amount of air updraft only half of the regenerator through the air, the experimental electric furnace is therefore increased by the air flow air system and resistance still larger than the coke oven gas heating. 
 Third, the tube furnace gas combustion flame is longer 
 The inert gas in the tube furnace gas is about 60%. Thus the flame longer, better uniformity of heating up and down the coke cake. 
 Preheat the gas through the regenerator volume, so the regenerator, flue and sub-exhaust gas temperature of the flue is relatively low. Small stack flue gas outlet temperature is generally 40 - 60 ° C lower than the use of coke oven gas heating. 
 Fourth, the tube furnace gas toxicity 
 High-temperature furnace gas, the CO content is generally 25% - 30%, in order to prevent excessive CO content in the air must be kept tight gas appliances. Tube furnace gas equipment should be installed in strict accordance with the regulations to achieve standard pressure test, if idle for a long time before re-use, the box-type furnace again to suppress the leak testing to confirm the pipeline equipment closely to switch to a tube furnace gas heating. Day-to-day operations, should also exchange cocks regular cleaning refueling, also water seal should be checked regularly, to maintain full flow state, the closure wall of the regenerator, flue connection pipe at the inspection and strict work should always 
 Tube furnace gas into the vacuum state after the exchange of the opening and closing. Once a positive pressure there, and shall immediately ascertain the reason the Organization's human to deal with in a timely manner to ensure that the vacuum state in the tube furnace gas tube furnace to enter the exchange opening and closing. 
 V. tube furnace gas dust large 
 Tube furnace coke oven gas dust content no more than 15mg/m3. In recent years, due to the high-pressure roof and the improvement of the washing process, the tube furnace gas dust content can be reduced to 5mg/m3 the following, but long-term use of a tube furnace gas, gas in the dust will be deposited in the gas channel, so that resistance increases, the normal regulation of the impact of heating, and thus need to take sweeping measures. 
 In addition, the experimental electric furnace gas is a water-washing, it contains saturated water vapor. Gas temperature is higher, more water, lower heat value of the make gas. From the calculation, the gas temperature increased from 20 ° C to 40 ° C, maintained for the same heat, the table of the vacuum atmosphere furnace gas flow increased by about 12%. Thus requiring a tube furnace gas temperature should not exceed 35 ℃. When the occurrence of certain changes in the gas temperature, switches, workers should immediately immediately adjust the flow of heated gas table in order to ensure the stability of the total supply of coke oven heat. 
 Source: Luoyang City Yongtai test equipment research center http://www.lyytdl.com 
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