Dual Reactor Research Articles

Cracking of Residual Oil by Use of Dual Spouted Bed Reactor with Three Chambers (Part 2)

Cracking of Residual Oil by Use of Dual Spouted Bed Reactor with Three Chambers (Part 2)

Cracking of Residual Oil by Use of Dual Spouted Bed Reactor with Three Chambers (Part 1)

Cracking of Residual Oil by Use of Dual Spouted Bed Reactor with Three Chambers (Part 1)

Determination of l-asparagine and l-arginine with open tube enzyme reactors

1. 1. Solutions containing L-asparagine or L-arginine were pumped through open tube enzyme reactors, the reactors catalyze the convertion of l-asparagine or l-arginine to ammonia, the ammonia concentration in the effluent was determined and found to be directly proportional to the concentration of l-asparagine or l-arginine in the range 3–25 mM and 1–12 mM, respectively. 2. 2. The reactor for l-asparagine determination was prepared by immobilizing asparaginase on the interior surface of a nylon tubing. 3. 3. The reactor for l-arginine determination was prepared by simultaneous immobilization of arginase and urease, this dual enzyme reactor catalyzes two consecutive reactions leading to the formation of ammonia from l-arginine.

Economic impact of mass production of alternative low emission automotive power systems.

The study considers a range of possible effects on the transportation industry, satellite industries, the labor market, and the economy which may be anticipated in the event mass production of unconventional low emission automotive propulsion systems should occur, whether as a consequence of federal intervention, or not. A postulated 1 976 Otto Cycle Internal Combustion Engine equipped with a dual catalyst manifold reactor and other “conventional” emission control devices was compared in detail with a Regenerative Free Turbine Engine and a Rankine Cycle Engine, as specified by the contracting agency. Manufacturing costs, operating and ownership costs, consumer demand, inter-industry effects, employment, resource requirements, and international trade implications were analyzed in depth under a number of plausible sets of policy constraints and parametric variations. Principal conclusions are that conversion over a 10 year period is feasible, that manufacturing cost differentials are less critical than fuel...

Applications of the pyrochrom TM for on-line elemental analysis of gas chromatographic effluents

Applications are presented for the use of chromatographic stop-flow and a dual two-stage reactor unit in the Pyrochrom TM Elemental Analyzer for identification of gas chromatographic effluents. Illustrations of functional group and C, H, N, O analyses are given for complex organic mixtures. Sub-microliter samples are routinely analyzed within approximately 0.5% accuracy limits in a reliable and efficient manner to provide effluent on-line elemental analysis and subsequent empirical formula determination.

Hanford's new production reactor

Hanford is one of the United States' two sites for the production of plutonium-239, used principally for military purposes. The General Electric Company operates and maintains the New Production Reactor called the 100-N Reactor Plant. In all of the existing reactors built prior to the 100-N reactor, the coolant water temperatures are relatively low; therefore, the heat developed in the plutonium production process cannot economically be converted to electric energy. The New Production Reactor (100-N Reactor) is a dual purpose reactor which produces both plutonium and electrical power and other important isotopes for industry and research. The reactor achieved criticality of December 1963 and the first electrical power was produced in April 1966. The origin of the dual purpose NPR project and a description of the facilities are presented.

Selection of coolant parameters for removal and utilization of heat from reactors

The conditions for choosing inlet and exit reactor coolant temperatures are discussed. The reactor exit temperature, for both power and dual purpose reactors, is determined by the allowable temperature for the cladding material of the fuel elements. The coolant inlet temperature in a power reactor is determined by the produced steam parameters, and in a dual purpose reactor it is determined by the condenser cooling water temperature or the melting temperature of the coolant when liquid metals are used. In connection with this, the thermal efficiency, which is always greater in power reactors than in dual purpose reactors, is discussed. In spite of the lower thermal efficiency in dual purpose reactors, the total of energy produced is but little different from the energy produced in power reactors. However, if power reactors are designed for the maximum limits of heat flux, they become more profitable than dual purpose reactors since at the same thermal power level they allow generation of a greater amount of electrical energy.

Projected dual cycle boiling-water reactor

Projected dual cycle boiling-water reactor

Some Economic Consequences of Nuclear Power

clear power development during the last year or two discloses a new mood of optimism among those concerned with this subject. According to a number of informed scientists and observers, power produced from either dual or single purpose reactors seems to be within the margin of economic feasibility. Whether or not the government implicitly or explicitly subsidizes the production of power, by purchasing fissionable materials, by underwriting or directly assuming construction costs of nuclear installations, or by other methods, these persons contend that nuclear power can be produced within the relatively near future at a cost which would be competitive with power produced in the higher cost areas of the United States and other parts of the world. Further, it is held that, as sources of fossil fuels become more and more ex-

Economic Feasibility: The Dual Purpose Reactor

Economic Feasibility: The Dual Purpose Reactor

Why the Dual Purpose Breeder Reactor?

(1953). Why the Dual Purpose Breeder Reactor? Bulletin of the Atomic Scientists: Vol. 9, Invoking the Fifth Amendment, pp. 162-164.