Essential knowledge of granules: analysis of biomass particles

Essential knowledge of granules: analysis of biomass particles

In the trade of biomass particles, often buyers and sellers first on the indicators of the situation, then the commonly used indicators of biomass particles, including those?

    The index of biomass particles is the result of testing by a professional inspection body after testing a certain weight of the particle samples. It is composed of two parts: industrial analysis index and elemental analysis index. The industrial analysis index is the necessary indicator of the test. Analysis can be detected as needed (commonly used in international trade).

    Easy grain network will be two consecutive days, respectively, for everyone to explain the industrial analysis indicators and elements of indicators, and its significance in the trade and use of particles.

    Broadly speaking, the industrial analysis of biomass particles includes water (M), ash (A), volatile (V) and fixed carbon (FC) four indicators of the general analysis of the indicators, and ash observation and ash Melting point to make judgments, but also includes the whole particles of biomass particles and calorific value of the determination, also known as the whole industrial analysis of biomass particles.

    According to the analysis results, we can understand the content of organic matter and the amount of heat in the biomass particles, so as to determine the type of biomass, the processing and utilization effect and the industrial use, and calculate the calorific value of biomass particles according to the industrial analysis data.

    The industrial analysis of biomass particles is mainly used for production and sales and user control of product quality.

    1, moisture (M)

    Biomass is a porous solid that contains more or less moisture. The presence of moisture has a significant effect on the thermochemical transformation of biomass. Therefore, moisture is one of the most basic indicators of biomass particles. If the water content is high, it will affect the heat, reduce the effective calorific value.

    2, ash (A)

    Ash is the biomass of all combustible material completely burned and the biomass of minerals in a certain temperature produced by a series of decomposition, chemical and other complex reactions after the residue of ash, is the residual biomass residue after the residue. In yesterday's article on the melting point of melting, we can find that ash and impurities which will have a certain impact on the boiler coke.

    3, volatile points (V)

    Volatile fraction refers to the biomass particles in the isolated air under the conditions of heating to a certain temperature, and stay in the temperature for a period of time, until the organic matter heat decomposition of all the gaseous products. In general, the higher the volatilization, the better the combustion performance of the particles.

    4, fixed carbon (FC)

    Fixed carbon in biomass refers to the removal of moisture, ash, and volatile residues from the biomass. As with ash, fixed carbon is not entirely an intrinsic ingredient in biomass, and it is said that it is also a thermal decomposition product, which contains not only carbon but also hydrogen, oxygen, nitrogen, sulfur and other elements.

    5, heat (Q)

    The calorific value of biomass particles is divided into low calorific value and high calorific value, the unit is MJ / kg.

    The high calorific value (Qgr) refers to the total heat released when the 1Kg fuel is completely burned, including the latent heat of vaporization that has evolved into water in the flue gas. Low calorific value (Qnet) refers to the heat from the high calorific value The steam heat of the steam is measured when the heat of the fuel is measured.

    Because the low calorific value is the net calorie value after removing all the potential calorific value, it is usually measured by the low calorific value as the calorific value in the trade and use of the particles.

    6, total sulfur (S)

    Biomass particles through the processing of raw materials, granules in the actual composition of the sulfur content has been very low, fully meet the state of the boiler when burning environmental requirements.

    In the daily production and business activities, we can pay more attention to the above several key indicators in order to effectively control the quality of particulate products and the use of particles