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Show Two characteristics of the TGP make it especially well suited for waste destruction: operation in the entrained flow, slagging mode and its slurry feed system. Entrained Flow. Slagging Mode of Operation. In this type of gasification process, all of the feeds go through the high temperature reaction zone, which is hot enough to destroy all organic compounds with molecular weights higher than methane. The ash components in the feed leave the gasifier as a molten slag. This slag, which is removed from the process as a glassy frit, has been shown to be non-hazardous in all testing. Slurry Feed. The TGP is distinguished from most of the other gasification processes by its use of a liquid slurry feed system. This method has been shown to be simple, reliable, safe and efficient. Its capability to handle feedstocks with a wide range of physical and chemical properties, tolerate changes in these feeds and still operate reliably and safely, makes it ideal for waste gasification. When a slurry feed system is used, the only limits that are placed on the gasifier charge stocks are that they can be pumped, and that the gasifier can be operated efficiently in the slagging mode when they are used. With the materials handling and slurrying technologies that are available today, it is possible to make any material pumpable. Co-fuels can be added to a slurry to provide the energy that is needed for good gasification efficiency. Additives can be used to achieve the characteristics needed for slagging. When all of this available technology is used, there is essentially no limit on the type of wastes, or other feedstocks, that can be utilized in the TGP. TGP PILOT PLANT TESTING Texaco's research laboratory in Montebello, California, is a maj or pilot plant installation for research, development, testing and demonstration of the Texaco Gasification Process. It has been in existence since 1946. Currently, it contains three gasifiers with rated capacities of 15-25 tons of dry coal per day. These units are also capable of feeding equivalent amounts of a wide range of other solid and fluid carbonaceous fuels. In addition to the gasifiers, the Laboratory has facilities for the preparation of feedstocks, including grinding for solids, and product purification systems that enable the plant effluents to meet the discharge requirements of the Los Angeles basin. Particularly important for this, is a Selexol unit (currently licensed by the Union Carbide Corp.) to remove - 2 - |