Thermobalance Diagram

Fig. 21. Diagram showing the water vapor transport for two gas flow rates of CO 2 through the reaction chamber (furnace of the thermobalance) as a function of temperature under standard conditions ...

Experimental. The test program to study the effects of temperature, hydrogen pressure, particle size, and heat-up rate on the rate and extent of kerogen removal from the shale was carried out with a thermobalance, as diagramed in Figure 1. The design and operation of the equipment have been described in an earlier publication (2). 

Fig 10. Arrhenius diagram for combustion and C02-gasification of straw char in comparison to other chars (thermobalance data for a char particle size of 50 ... 

The instrument used is called a thermobalance or thermogravimetric analyser. The two most important parts are the furnace and the balance. A schematic diagram is shown in Figure 6.1. 

Figure 3>27. Schematic diagram of Stanton Redcroft Mode) TG-750 thermobalance.

Williams and Wendlandt (68) have described a high-pressure thermobalance based on the Du Pont Model 950 balance and capable of operation at temperatures of 500°C and 500 atm pressure. A schematic diagram of the balance enclosure is shown in Figure 3.34. The balance chamber was machined in the form of a cylinder from stainless steel. The furnace was insulated with Marinite which was machined to fit inside the pressure vessel and extent from the inner plato to the front of the balance housing. Provision was made for fitting the furnace within the insulated chamber and permitting... 

Figure 3.34. Schematic diagram of the high-pressure thermobalance enclosure. A, end plate with threaded opening for gas inlet fitting B, Buna-N O-ring C. pressure cell D. high-pressure connector for control cable E, balance movement F. furnace chamber G. furnace thermocouple H, furnace heater wire in Marinite insulation J. hexdrive bolts K, end plate with threaded opening for gas outlet fitting (68).

Figure 3 Schematic diagram of a typical thermobalance system...

Figure 1 Schematic diagram of DTA head mounted on a thermobalance suspension...

The same MS instrument was also linked to a TA Instruments model 951 thermobalance, which is ideal for EGA work, but is sadly no longer available. This combination was used to investigate the problem of calibration of a TG-MS for quantitative EGA. A schematic diagram of the layout is shown in Figure 10. 

Fig. 5-3 Thermobalance with Symmetrical Weighing System and Two Ovens Schematic Diagram of the Thermal-Microbalance TG 439 (Netzsch Geratebau GmbH)...

FIGURE 9 Schematic diagram of a thermobalance and control unit. 

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