Coal testing equipment laboratory equipment coal coal coal testing equipment laboratory equipment

Calorimeter is an oxygen bomb combustion, inner tube, an outer tube, a stirrer, a temperature sensor and sample ignition device, temperature measurement and control systems, and water composition. (2) oxygen bomb made of heat resistant and corrosion-resistant chromium or bromine, bromine chrome consistency King made, need to have three main properties: a) the effect of high temperature and corrosion products occurring during combustion is generated from thermal effects; b ) can withstand high voltage transients oxygenation and combustion pressure generated in the process; c) during the test to be completely airtight. (3) tube with copper, brass or stainless steel made section can be oval, diamond, or other appropriate shape. Tube filled with water 2000mL-3000mL, to be able to immersion oxygen bomb (except out of the valve and electrodes) prevail. Outside the inner cylinder should be highly polished to reduce radiation between the outer tube. (4) the outer cylinder is double-walled container made of metal, and covered by a roof. Circular outer wall, the inner wall shape according to the shape of the inner tube may be; should be completely surrounded by an outer tube inner tube, inside and outside the tube should be 10mm-12mm pitch, the bottom of the outer tube insulation stent for placement within the cylinder. (5) a propeller stirrer or other forms. Speed ??(400-600) r / min is appropriate, and should be kept constant. (6) calorimeter thermometer for measuring the temperature inside the barrel calorimeter thermometer should have at least a resolution of 0.001K to 0.002K can be measured or better resolution 2K to 3K temperature rise; 2, accessories (1 ) the best products of combustion dish platinum, chromium just generally available bromine products. Specifications can be high 17mm-18mm, bottom diameter 19mm-20mm, the diameter of the upper portion of a diameter 25mm-26mm, thickness of 0.5mm. Steel or other combustion quartz dish may also be used. (2) pressure gauge pressure gauge and oxygen conduit header by two components: an indication of the oxygen bottle pressure, a pressure inside the oxygenate oxygen bomb instructions. Head table should pressure reducing valve and safety valve. Pressure gauge and oxygen through the inner diameter of the bobbin seamless bomb 1mm-2mm connection, or through oxygenation means to make import oxygen. (3) the use of an ignition device Ignition 12V-24V power supply, available 220V AC power supply by the transformer. A series line should regulate voltage varistor and an indication lamp ignition conditions or galvanometer. Ignition voltage test should be pre-determined. Method: Connect the ignition wires, power test in the air. In the case of fused ignition, adjust the voltage ignition wire in the 1s-2s achieve bright red; in the case of cotton ignition, adjust the voltage reaches the ignition wire dark in the 4s-5s. After the voltage and time is determined, it should accurately measure the voltage, current and power-on time, in order to calculate the heat energy generated. Such as the use of cotton ignition, the fire between the two electrodes cover more than cover live some direct connection bromine chrome wire about 0.3mm, middle wire spiral baked in advance, the number of turns in order to heat concentration. (4) press cake machine screw, lever or other forms of pressure cake maker. 10mm diameter briquette can suppress or benzoic acid cake. Application of mold and plunger made of hard, smooth surface, easy to clean. (5) Stopwatch or other timer can indicate the 10s 3, the balance (1) analytical balance: a sense of the amount of 0.1mg. (2) Industrial balance: load 4kg-5kg, a sense of the amount of 1g.