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What are the signs of coal and gas outburst?
- After the staff found that the above signs, should immediately report to the relevant departments to take timely measures, when the situation is serious, should immediately stop the work, the rapid withdrawal of the windIn recent years, due to the attention of Party and country and the vast majority of scientific and technical personnel to take a lot of coal mine safety protection measures, such as Shimen exposed seam mining face on vibration shot, long shot, a shelter, compressed air self-help system and wear isolated self rescuer, these measures have certain effect on coal and gas outburst prevention plays.s
The standard Meizhi is what mean?
- Standard coal, also known as coal equivalent, has a uniform calorific value. China's per kilogram of standard coal calorific value of 7 million cards. The different varieties and different contents of energy are converted into standard coal with a calorific value of 7 million calories per kilogram according to their different heat values.Energy standard coal coefficient = the actual calorific value of some energy (kcal / kg) /7000 (kcal / kg)s
How to make charcoal war of survival
- 3, then you can take a look at the composition of the table: enter the game will see the above question mark, click the question mark.4, and then click on the following RECIPAEDIA.s
Do coal business, the customer is always asked whether the coal
- In this case, when the transfer of coal in Qingdao is not allowed to sell, but usually coal companies will do some means to sell coal in the port.s
Well log interpretation
- As well as the "four low" characteristics: low natural gamma, low compensation density, low cross section, low acoustic impedance, and dark color;s
1 degrees of electricity consumption of standard coal
- The kilowatt hour is mainly used to measure the power, because the kilowatt hour is easier to understand than the Joule, and is easier to be converted to the number of hours when the appliance is used. On the other hand, the unit measure of Joule relative kilowatt hour is too small, it is not convenient to calculate, and there are some public institutions in China to use the "megawatt hour" on the bill to replace the kilowatt hour". In Chinese, "kW" is sometimes written as kw.s
How to use activated carbon to filter liquor
- Look at the size of the smaller carbon particles and air contact area is larger, the specific surface area is larger, the adsorption performance is better, but the smaller the particle crushing loss, the production process is more and more dust, the higher the costs, so many manufacturers to reduce costs, the use of large granular activated carbon of course, the performance is not good, active carbon in about 0.5 mm average particle size so as to achieve the best performance, and make sure it's not powder, no pollution. Recommended to choose the particle diameter between 0.42-0.85 mm of activated carbon products.s
What is the composition of coal
- . Sulfur, phosphorus, fluorine, chlorine and arsenic are harmful components in coal. When most of the coal burning sulfur is oxidized to sulfur dioxide (SO2), with the flue gas emissions, air pollution, harm to animal and plant growth and human health, corrosion of metal equipment; when the multi sulfur coal for metallurgical coke, but also affect the quality of coke and steel. So, the sulfur content is one of the important evaluation index of coal. The organic matter in coal at a certain temperature and under the condition of combustible gas produced by thermal decomposition, called "Volatile", it is a mixture composed of various hydrocarbons, hydrogen, carbon monoxide and other compoundss
How do Solar Cells Work?
- If you are a science major then this is not the article for you but if, like most of us here, you have sometimes wondered if it is possible to understand how solar cells work in si...
How to choose good solar panels for houses
- Maximum power Pmax of solar panels for houses open circuit voltage x short-circuit current, which is their ideal power, while the usual measure of solar cells is the rated power of...
the introduction of biogas power plant
- the summary of biogas power plant Biogas power generation in developed countries has been widely recognized and actively promote. Biomass power generation in some countries in West...
A brief introduction to the types of biofuels
- Biofuel refers to solid, liquid or gaseous fuels from biomass composition or extraction can be replaced by the oil to produce gasoline and diesel is an important direction of the d...
Classification and function of discount solar panels
- Classification: crystalline silicon cell board: polycrystalline silicon solar cells, single crystal silicon solar cells.Amorphous silicon cell plate: thin film solar cells, organic...