What is total coal sulfur

What is total coal sulfur:

It is a harmful element of coal, including organic sulfur and inorganic sulfur. Less than 1% can be used as fuel. In some regions the requirements are lower than 0.6 and 0.8. Today, environmentally friendly coal and green energy are often referred to as lower sulfur coal.

Commonly used indicators include: total sulfur on an air-dry basis (St.ad), total sulfur on a dry basis (St.d), and total sulfur on a dry basis (Star).

The proportion of sulfur contained in coal is the sulfur content of coal! The sulfur in coal is divided into two categories: organic sulfur and inorganic sulfur depending on its existing state. Sometimes there are also traces of elemental sulfur in a monomeric state. Coal with a total sulfur content St,d>3.00% on a dry basis in coal est a coal with a high sulfur content. However, the National Environmental Protection Administration considers >2.00% to be high sulfur coal.

The sulfur contained in coal has the negative effects of corroding equipment and polluting the air. Coal with excessive sulfur content requires desulfurization treatment. The sulfur content of coal is a standard to check whether the coal is qualified.

When using the aldrin method to determine total sulfur in coal, attention should be paid to the following points

(1) Semi-melting must be carried out under ventilation, otherwise the coal particles will not burn completely and so that some of the sulfur cannot be converted to sulfur dioxide;

(2) The precipitant BaCl2 must be excessive;

(3) When extracting and washing with water, the volume of the solution should not be too larged to avoid affecting the measurement results;

(4) Pay attention to adjusting the acidity of the solution to convert CO32- into CO2 to escape;< /p>

(5) During the washing process, before each inhalation of distilled water, you should drain all the washing liquid, so that the washing effect is better;

(6) No filter paper should be left before burning, and the high temperature furnace should also be ventilated;

(7) After burning After the BaSO4 has cooled in the desiccator, weigh it in time;

(8) A blank test must be carried out.

Synthetic hydrogen can be used as a fuel for vehicles.

Synthetic hydrogen fuel can be blended with fuels such as natural gas. By mixing hydrogen with natural gas and using it as vehicle fuel, the maximum explosion pressure of the engine is increased, improving some performance of the natural gas engine.rel and reducing the exhaust gas content by 50%. The application of natural gas hydrogenation fuel in civil burners can improve its combustion characteristics, increase the fire limit and carbon monoxide generation limit of the gas, and reduce the occurrence of yellow smoke. Low ignition energy improves the heating efficiency of the burner.

As a new type of clean energy, synthetic hydrogen can replace liquefied petroleum gas, natural gas, coal gas, gasoline and diesel, etc., and has many uses. Synthetic hydrogen fuel is colorless and odorless and is a known lighter gas that can be stored, transported and used at normal temperatures and pressures. Synthetic hydrogen fuel has high combustion power and a high flash point. The emission after combustion is water, which will not pollute the environment after volatilization, but may alsont promote atmospheric circulation and increase air humidity. It is therefore the most ideal clean fuel to replace traditional fuels.

ExtensionInformation:

Synthetic hydrogen fuel (Aquafuel) is a combustible gas of hydrocarbon mainly composed of hydrogen. It burns safely and efficiently, and is non-toxic and odorless. It is a new type of green and clean energy. The use of hydrogen energy is a high-tech topic that scientists around the world have been studying and exploring for many years and hope to achieve breakthroughs. The successful development of synthetic hydrogen fuel has opened a new path for the efficient use of hydrogen energy and is a high-tech achievement of historical significance.

The application effects of synthetic hydrogen fuel mainly include foure aspects: First, energy saving. Synthetic hydrogen can replace primary energy sources such as oil, natural gas and coal. Take cars for example: in 2010, Zhengzhou had 963,000 cars. Assuming that each car consumes 1.5 tons of gasoline (the national average), if cars are modified to use synthetic hydrogen, 1.44 million tons of petroleum products can be saved each year. year.

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