Question – Regarding the calorific value requirements for fuel used in boilers
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May I ask what are the requirements regarding the calorific value of the fuel (gas, liquid, solid) fed into the boiler? In particular, can coke oven gas (with a calorific value of about 2000 cal/m3) be used as fuel for boilers?
This coke oven gas can be used; the Shagang Power Plant generates electricity by utilizing the coke oven gas from Shagang’s assets, but it’s easy for the flame to go out if not operated properly. But is the unit for these 2000 cal wrong? The calorific value is so low? It should be 2000 Kcal?
Reply to 2# Yanglan Technology: Thank you. It is 2000 kcal/Nm3. Coke oven gas can be used for power generation, but is it suitable for use in heating boilers only?
Steel plants produce large amounts of by-product gas, primarily coke oven gas, blast furnace gas, and converter gas. Their typical compositions are as follows: Table – Composition of by-product gas from steel plants. Component; Gas name: H2, O2, N2, CO, CH4, CO2, CmHn. Coke oven gas: 57.4, 4.2, 6.3, 27.3, 1.7, 3.1; Blast furnace gas: 2.7, 54.0, 21.8, 21.5; Converter gas: 1.5, 0.4, 19.1, 60.0, 19.0. In general, the calorific value of these gases decreases in the order of coke oven gas, converter gas, and blast furnace gas, while their toxicity increases in the opposite order. Coke oven gas and converter gas are widely used in power generation boilers, while blast furnace gas must be treated with molecular sieves before it can be used. Heating boilers should also be usable, but it is still necessary to pay attention to safety protection facilities and measures. (At our thermal power plant, an injury accident occurred during last year’s maintenance work because the replacement was not done properly) For reference
Heating is no problem; what’s needed is to ensure that the safety monitoring devices are in good condition and to purchase a better burner. Leak detection devices are used for the pipelines, etc. What area do you need to heat?