สล็อตเว็บตรง Can Be Fun For Anyone
สล็อตเว็บตรง Can Be Fun For Anyone
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Temperature has a major impact on the calcination effectiveness of limestone in a very wide range. Calcination experiments of limestone with particle sizes of 150 μm are done at temperatures from 750 to 920 °C under N2 ambiance in MFB-TGA equipment. The product success are as opposed with the experimental data of MFB-TGA at various temperatures revealed in Determine 2a. The conversion of limestone particles will increase promptly from First to total conversion with time, Specifically at higher temperature. Under 900 °C, it only will take ~10 s for particle conversion to attain ~100%.
A standard thermogravimetric analyzer includes a precision harmony with a sample pan Situated inside of a furnace with a programmable Regulate temperature. The temperature is generally improved at constant amount (or for a few applications the temperature is managed for a continuing mass loss) to incur a thermal response.
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The furnace temperature is elevated to 850 °C and stabilized for 30 min. The fluctuation of your mass signal within one hundred twenty s is ±1 mg from the continual point out, as shown in Figure 10a, indicating the experimental system is very secure. After that, the limestone particles (red particles in Determine 9b) are swiftly injected in the fluidized bed through the major inlet in the reactor, and also the mass enhanced rapidly by 64 mg within just 0.2 s (equal into the mass of injected limestone), as demonstrated in Figure 10b. The limestone particles are blended While using the inert mattress materials during the reactor, heated, and calcined inside a fluidizing affliction. During the experiment, the mass injected of limestone is 60–70 mg to minimize the result of mass transfer. Each individual situation is recurring quite a few occasions to be sure reproducibility.
The particle conversion amount due to CO2 external diffusion from your floor get more info of limestone particle to the main movement is:
Successful and trusted operation throughout the clock is ensured because of the robust, factory endurance analyzed sample robotic.
The best products characterization could be the residue remaining after a response. For example, a combustion response may very well be examined by loading a sample into a thermogravimetric analyzer at normal conditions.
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In accordance with the geometrical relation proven in Determine 11, the conversion of limestone particles Xcalc can be calculated as:
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TGA is usually a normally made use of professional instrument for measuring the kinetics of limestone calcination [22,twenty five,29,35]. In the TGA experiment, a 5–ten mg sample is put inside of a crucible and heated in a heating amount of fifty K/min to get the weightless curvature on the limestone. It could be witnessed from Determine 1 the limestone particles are decomposed through the heating method. The decomposition qualities of limestone particles beneath continual temperature situations are hard to get, which can be of excellent significance for the institution of your decomposition styles plus the perseverance of kinetics. Additionally, the conversion of limestone particles in TGA is slower in comparison with MFB-TGA because of the fuel diffusion resistance.