Great Recovery Project

The researches have also pointed out that the waste heat recovery project is only profitable when one is faced with great energy consrrmptions together with high cost of the unit electric energy. 

Considering that Cimpor s factoiy at Souselas has an installed capacity of 2 million cement tons, which represents electric eneigy consumptions of about 200 GWh per year, and due to the high cost of the kwh suppUed, thus are assembled all the economical conditions for the development of a waste heat recovery project in this plant (great consumptions, very expensive electric energy). In this sense some specialised companies in this matter have been contacted, being elected NIHON CEMENT COMPANY (NCC), a Japanese Company from Tokyo, with well succeeded experiences in this field. 

Optimizing the formulation of micellar surfactant solutions used for enhanced oil recovery consists of obtaining interfacial tensions as low as possible in multiphase systems, which can be achieved by mixing the injected solution with formation fluids. The solubilization of hydrocarbons by the micellar phases of such systems is linked directly to the interfacial efficiency of surfactants. Numerous research projects have shown that the amount of hydrocarbons solubilized by the surfactant is generally as great as the interfacial tension between the micellar phase and the hydrocarbons. The solubilization of crude oils depends strongly on their chemical composition [155]. 

But despite the great reductions in recovery caused by sweep effects, currently the design of a field project is often dominated by other concerns. 

On the basis of these circumstances, the need for a better solid waste disposal system has stimulated a great deal of interest in the application of pyrolysis to solid wastes instead of the traditional incineration system in our country. Since the Agency of Industrial Science Technology, MITI had launched the national project on development of technology and system of resource recovery from refuse in 1973, more than a dozen processes of PTGL are being developed at the national level, municipal level, and the level of private companies as shown in Table I. 

At the Great Plains Synfuels Plant, North Dakota, some 13,000 tons per day of carbon dioxide gas is captured and 5,000 tons of this is piped 320 km into Canada for enhanced oil recovery. This Weyburn oilfield sequesters about 85 m of carbon dioxide per barrel of oil produced, a total of 19 million tons over the project s 20 year Ufe. The first phase of its operation has been judged a success. 

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