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Furnace System

Gases from the furnace, metal tap, slag tap, and feed system are combined and fed to a sis-ceU pulse baghouse containing 864 high temperature Teflon bags. The dust from the electric furnace system is fed continuously back to the reverberatory furnace in a close screw conveyor. [Pg.50]

In this work, atmospheric particles (PM 10 and PM 2.5) were collected by a dichotomos air sampler. Several leaching procedures were investigated for decomposition of heavy metals. The digests were pre-concentrated with sodium diethyldithiocarbamate. The determinations were canted out on a Vartan Model AA-220 atomic absorption spectrometer. The instrarment was equipped with a GTA-110 graphite furnace system. Table 1 shows the concentrations of heavy metals associated with PM 10 and PM 2.5 particles. Table 1. Concentrations of heavy metals in PM 10 and PM 2.5 atmospheric particles (ng/m )... [Pg.237]

The graphite furnace system was originally developed by Andreae [712] when he found that the quartz cuvette gave only very poor sensitivity for germanium. This was attributed to the formation of GeO, a very stable diatomic species, at the relatively low temperatures of the quartz cuvette. At the higher temperatures available with the graphite furnace (2600 °C for the determination of Ge), a sensitivity could be obtained for germanium comparable to that of the other hydride elements. [Pg.256]

Hydrogen is a stable gas in seclusion, but in air, is very unstable. The flammability properties of such a mixture are well-known at atmospheric pressure, yet little is known about the hydrogen-air mixture at sub-atmospheric pressures. In order to determine the hydrogen reaction limits within a vacuum, a number of experiments were performed and analyzed. The results were used to design a vacuum furnace system and processes with safeguards to protect against a severe hydrogen reaction. [Pg.237]

TABLE 1 Estimated Capital Cost for DC Graphite Arc Furnace System... [Pg.536]

Energetics to Deactivation Furnace System or Off-site Disposal 5X Clean Metal Parts... [Pg.33]

Finding 3-1. The Army has not determined when a commitment to an on-site deactivation furnace system as part of a modified baseline process at Pueblo must be made if a permit for the off-site transport of energetics has not been received. [Pg.34]

Recommendation 3-1. The Army should develop a process and schedule to determine when a decision must be made between the off-site transport of energetics or their on-site disposal in a deactivation furnace system. To avoid schedule delays, the decision mechanism must account for uncertainties in the permitting process. [Pg.34]

Recommendation 3-8. Lessons learned at JACADS from the disposal or decontamination of demilitarization protective ensemble suits and dunnage in the metal parts furnace should be incorporated into the design and operation of the comparable furnace (MPF) of the modified baseline process. Spent decontamination fluid should be injected into the MPF afterburner (or deactivation furnace system [DFS] afterburner) if it cannot be shipped off site. Similarly, contaminated spent carbon can be processed through either the MPF or the DFS if there is one. Uncontaminated dunnage and spent carbon, slag, and ash can be shipped off site to permitted waste disposal facilities after being tested to ensure they meet all requirements for off-site disposal. [Pg.51]

In this chapter we consider the FEHE-furnace system in more detail in order to illustrate the inherent dynamic problems with using reactor effluent for preheating the feed, despite its steady-state economic advantages. [Pg.369]

The crossover temperature must satisfy an overall heat balance around the furnace system, including transfer line heat exchangers and feed preheaters, and must not exceed certain limits to avoid incipient cracking. [Pg.387]

Another style of furnace system, provided by Ulvac/Sinku-Rico Inc. [11], is an infrared heating furnace (Figure 2.9). This... [Pg.22]

A block diagram for a feedback control furnace system, used in thermal analysis instrumentation, is shown in Figure 2.10. The SCR receives a control instruction, and in turn permits a... [Pg.23]

A quantitative understanding of certain primary combustion phenomena, e.g., liquid fuel-droplet vaporization and burning, gas phase chemical reaction kinetics, radiation heat transfer from combustion products, and mixing of reactants and combustion products, is required to develop a rational approach for the effective utilization of synfuels in industrial boiler/furnace systems. Those processes are defined by the interaction of a number of mechanisms which are conveniently described in terms of physical and chemical related processes. The physical processes are ... [Pg.27]

The primary research tools used in this program were C-E s Drop Tube Furnace System (DTFS), a bench scale entrained laminar flow furnace and the Controlled Mixing History Furnace (CMHF), a pilot scale entrained plug flow furnace. Both the DTFS and CMHF by virtue of their ability to resolve combustion time into distance along their respective furnace lengths were used to examine carbon burnout phenomena associated with the SRC and reference coals. In addition, the CMHF by virtue of its staged combustion capabilities was used extensively to evaluate N0X emissions and to establish conditions conducive to low N0X ... [Pg.206]

A number of standard and special bench scale tests along with the Drop Tube Furnace System (DTFS) and pilot scale Controlled Mixing History Furnace (CMHF) were employed in this program. [Pg.206]

The Drop Tube Furnace System (DTFS) consists essentially of an electrically heated 2 inch I.D. x 18 inch long furnace where fuel (1 gm/min) and preheated secondary gas (air or inerts) are introduced. The history of combustion is monitored by solids/gas sampling at various points along the length of the furnace. [Pg.207]

The experimental setup employed by us for the synthesis of the Y-junction nanotubes employed a two-stage furnace system similar to that described earlier29 (Figure lc). A known quantity of metallocene was sublimed in the first furnace and carried along with a flow of argon (Ar)... [Pg.449]

NOTE DFS, deactivation furnace system DPE, demilitarization protective ensemble LIC, liquid incinerator MPF, metal parts furnace PAS, pollution abatement system and PPE, personal protective equipment. [Pg.31]

Similar to RCRA, once the trial plan has been approved, a trial burn will be conducted and the results reported to the regional administrator or the director, National Program Chemical Division, for approval. At TOCDF, trial burns were conducted in accordance with RCRA and TSCA protocols for certain M55 rockets. The acceptance criteria for the RCRA trial burn of the liquid incinerators, the deactivation furnace system (DFS), and the metal parts furnace were met. A second test of the DFS destruction efficiency for PCBs showed that emissions levels meet TSCA criteria (NRC, 1999). [Pg.41]

Prior to agent operations, STBs were carried out for each of the three furnaces at the Anniston Chemical Agent Disposal Facility (ANCDF) the liquid incinerator (FIC), the deactivation furnace system (DFS), and the metal parts furnace (MPF). GB ATBs were conducted for the FIC and DFS in 2003 and for the MPF in 2005. In 2006, VX ATBs were conducted for the FIC and DFS. A DRE performance test was conducted on the MPF in 2006, and MPF VX ATBs are planned for 2007.4 After an ATB, the Alabama Department of Environmental Management allows ANCDF to oper-... [Pg.45]

Scrap metal generated at stockpile disposal facilities comes from the treatment of metal munitions casings and bulk ton containers (TCs) in the MPF or deactivation furnace system (DFS) after the agent has been drained. Drained bulk containers and munition casings with energetic materials removed and metal munition components are treated in the MPF to destroy any agent residues. After treatment, the metal parts are allowed to cool, vacuumed to remove loose paint flakes and ash residue, and stored temporarily prior to shipment off-site. [Pg.68]

At ANCDF, the Army verified through testing that metal scrap from the operation of the deactivation furnace system (DFS) or the MPF is thermally decontaminated.23 Therefore the ANCDF RCRA permit provides that scrap metal (bulk containers, projectiles, mortar rounds, etc.) that has been thermally decontaminated and further cleaned to remove any remaining loose residue may be recycled as a feedstock for steelmaking (i.e., smelting) (ADEM, 2006). [Pg.68]


See other pages where Furnace System is mentioned: [Pg.504]    [Pg.334]    [Pg.1549]    [Pg.248]    [Pg.256]    [Pg.334]    [Pg.546]    [Pg.536]    [Pg.94]    [Pg.504]    [Pg.19]    [Pg.25]    [Pg.32]    [Pg.32]    [Pg.38]    [Pg.31]    [Pg.146]    [Pg.445]    [Pg.17]    [Pg.27]    [Pg.45]   
See also in sourсe #XX -- [ Pg.218 , Pg.219 , Pg.220 ]




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