Furnaces general arrangement

Figure 2.13 General arrangement of coreless induction furnace [47, ETSU, 1992]... 

This seaion describes the general arrangement of various types of furnaces and discusses how operatidn and naaintenance affect furnace elevation, how to plan all necessary access, and platform requirements, associated equipment, and stack design. Exhibit 7-14 shows a typical arrangement of a circular furnace. 

Tig. 107 shows the arrangement and position of the retorts, of which there are generally five placed pyramidally in one furnace. Rig 108 is a front view of the same. To the three fires of the furnace, A is the door, C the grate, and n the ash-pit, with a well, D—Tig. 107,... 

In general, chloride is avoided in sample preparation for furnace AAS because many metal chlorides are relatively stable as gaseous molecules. But Tl has the highest stability of the metals often determined in the furnace so it is particularly important to minimize the chloride content of samples. The nitrate salt of Pd is the preferred modifier in the presence of several % HNO3 (Manning and Slavin, 1988). Welz et al. (1988) also studied the STPF conditions for Tl and recommended that the Pd modifier be pyrolyzed onto the platform prior to deposition of the sample. With this arrangement they were able to measure Tl in a seawater matrix. 

Carbon felt is another kind of CF arrange, generally used as thermal insulation in inert and vacuum furnaces, and that has seen its use in the fuel cell area only in microbial fuel cells (MFC) [101]. 

Carbon Reinjection. Partial suspension burning results in a greater carryover of particn-late matter in the flue gas than occurs with other types of stokers. In general the arrangement of the collection equipment is such that the coarse carbon-bearing particles can be returned to the furnace for further burning and the fine material discharged to the ash removal system. 

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