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Anthracite is the highest overall.
Why in general? Because anthracite has a high calorific value and a low calorific value. Of course, this is the case with bituminous coal, lignite, peat, and it is impossible to have a fixed combustion value. It varies depending on the origin and ingredients.
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The largest calorific value of coal is anthracite, commonly known as white coal or red coal. Every year with the advent of winter, various countries affected by cold air have begun to carry out thermal power generation for residents to heat and heat to heat, among which the main raw material of thermal power generation is coal, in order to make the heating efficiency higher, people have to look for coal with greater calorific value, so let's analyze the following why anthracite has the largest calorific value.
From the perspective of physical properties of coal, anthracite has the characteristics of high fixed carbon content, low volatile yield, high density, high hardness and high ignition point. As the name suggests, smokeless charcoal is to survive without white smoke after combustion, and we all know that when most coal is burned, white smoke will be generated. Under normal circumstances, carbon dioxide will be released from carbon combustion, and carbon dioxide is colorless and odorless, so there should be no white smoke generated, and white smoke is generated, indicating that the fixed carbon content is low.
Because anthracite has a lot of calorific value and is smokeless, it is loved by many people. Then why smokeless everyone likes it, because normal carbon contains sulfur, phosphorus and other impurities, these impurities will produce toxic gases after combustion, and also have a pungent taste, so smokeless charcoal is loved by everyone, among them, smokeless charcoal in the production of barbecue, barbecue and other occurrence rate is high, because if ordinary coal is used, then white smoke will volatilize to food, there is a risk of poisoning, and it will also affect people's experience of eating. <>
Although anthracite charcoal is a bit much, it is not commonly used in thermal power plants. At present, the yield of this anthracite in China is very low, because of soil reasons, the coal developed in China contains a lot of impurities such as sulfur and phosphorus, so most of the anthracite in China is imported from Australia, Australia's coal has a high inherent carbon content, but the road is far away, the transportation cost is large, and the purchase is high, which also leads to the shortcomings of high cost of anthracite. Although anthracite coal is good in large quantities, it is still necessary to cherish the use of coal and other resources.
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The largest calorific value of coal is anthracite, commonly known as white charcoal and red carbon. In winter, people prefer these high-calorie carbons for heating, which can reduce environmental pollution due to low loss of use.
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Anthracite. The calorific value of this coal is very large, because the utilization rate is also very high, and very few impurities are generated.
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Question 1: How much heat does a ton of coal produce? 1kg of standard coal 5000 kcal.
5,000 kcal per ton of coal. 1kg of high-quality coal 8000 kcal. A ton of 8 thousand kcal.
1kg of coal is 2300 kcal, and 1 ton of 1,000 kcal.
Question 2: How much heat energy can one ton of standard coal produce cracking imitation crying China defines 7000 kcal (29306 kJ) of heat per kilogram as standard coal, q 1000kg*29306kj kg=29306000kj
Question 3: What is the heat generated by the combustion of 1kg of coal, and how to calculate it Because the calorific value of natural coal is too different, only the heat of standard coal can be given, and the calorific value of 1kg of standard coal is artificially prescribed, that is, 7000kcal, which is converted into joules and then multiplied.
Question 4: A ton of coal is completely burned and burned, and the heat released is the combustion value of the fuel.
1 Definition: The heat emitted by the complete combustion of 1 kilogram of a certain fuel is called the combustion value of that fuel.
2 units: joules kg.
So you just need to know the combustion value of coal, which is: 23000000J kg (5500 kcal).
Nowadays, social progress is getting faster and faster, and science and technology are becoming more and more developed, in fact, coal is basically useless, except for industrial needs, ordinary people can't use it. Naturally, the demand will drop a lot, which is normal. <>
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