What is working height of blast furnace?
Modern blast furnaces range in size from 20 to 35 m (70 to 120 feet), have hearth diameters of 6 to 14 m (20 to 45 feet), and can produce from 1,000 to almost 10,000 tons of pig iron daily.
What is M value in blast furnace?
Due to the high inert gas content and the already relatively low heating value of the main combustible component CO, it has a low heating value in the range of 3–4 MJ/m3. Coke oven gas is the by-product of the pyrolysis of coal, which is the basic process for coke production for the blast furnace process.
What is THM in blast furnace?
where S is the sulfur load (kg/THM), n is slag volume (kg/THM). In contrast to the phosphorus control, the blast furnace conditions (slag properties) are in favor of sulfur removal from hot metal to slag. The control of sulfur in the hot metal could be achieved through the following measures [19]:
What is the working principle of blast furnace?
Blast furnaces operate on the principle of chemical reduction whereby carbon monoxide, having a stronger affinity for the oxygen in iron ore than iron does, reduces the iron to its elemental form.
Which fuel has the highest specific energy?
hydrogen
Which is not a primary fuel?
Which of the following is not a primary fuel? Kerosene is obtained by the fractional distillation of oil, and hence is a ‘secondary fuel’.
Which fuel causes least pollution a diesel?
Natural gas is the cleanest fuel and causes the least pollution when burnt compared to petrol, diesel and coal.
Does LPG cause pollution?
As it is a gas, it does not pose ground or water pollution hazards, but it can cause air pollution. LPG has a typical specific calorific value of 46.1 MJ/kg compared with 42.5 MJ/kg for fuel oil and 43.5 MJ/kg for premium grade petrol (gasoline).
Which mode of transport does not cause pollution?
Cycle is the vehicle which does not pollute the environment. Cycles do not need fossil fuels, so that they do not emit any harmful gases. So, cycle is an eco-friendly mode of transport. Cycling 10 km each way to work would save 1500 kg of greenhouse gas emissions each year.
Which fossil fuel produces the least air pollution?
Natural gas is a relatively clean burning fossil fuel Burning natural gas for energy results in fewer emissions of nearly all types of air pollutants and carbon dioxide (CO2) than burning coal or petroleum products to produce an equal amount of energy.
What is the most dangerous fossil fuel?
Gas is essentially made up of methane, a devastatingly powerful greenhouse gas that is 86 times more potent in its warming potential than carbon dioxide over a 20 year period.
What country uses the largest coal?
Coal Consumption by Country
| # | Country | Yearly Coal Consumption (MMcf) |
|---|---|---|
| 1 | China | 4,319,921,826,000 |
| 2 | India | 966,288,692,600 |
| 3 | United States | 731,071,000,000 |
| 4 | Germany | 257,488,592,900 |