A concentration detector is adapted to detect the concentration of a liquid fuel in a container. The concentration detector comprises a rotating mechanism positioned underneath the level of the liquid fuel and having a rotational center. A first float having a specific gravity less than the specific gravity of the liquid fuel, a volume equivalent to "V" and a mass equivalent to "M". The distance between the mass center of the first float and the rotational center is "L". A second float connected...

A concentration detector comprises oxygen-forming means for forming oxygen by decomposing the particular component in the gas, first output means for producing an output value proportional to the oxygen concentration in the gas of before oxygen is formed by the oxygen-forming means, second output means for producing an output value proportional to the oxygen concentration in the gas after oxygen is formed by the oxygen-forming means, concentration calculation means for calculating the concentrat...

In a system for the freeze concentration of coffee, the ratio of the area of the heat transfer surfaces of the crystallizer to the volume of the crystallizer should be between 7:1 to 10:1. To accomplish this ratio, a crystallizer having both a jacket and a central passage for refrigerant may be used.

There are disclosed herein equipment and methods for screening and concentrating waste water overflow from combined sewer systems. Exemplary equipment includes a separator employing a substantially cylindrical rotating screen. Influent is piped upwardly into the equipment and deflected outwardly toward the inner surface of the screen in a manner to achieve a desired flow rate and flow pattern of the influent onto the screen. Means are provided for controlling the flow rate and for suitably direc...

A concentration detector for detecting the concentration of a particular component in a gas based upon the amount of oxygen formed by the decomposition of the particular component, comprising oxygen-forming means for forming oxygen by decomposing the above particular component, oxygen-discharging means for discharging oxygen from the gas before oxygen is formed by the oxygen-forming means, and oxygen-discharging capability-increasing means for increasing the oxygen-discharging capability of the ...

A method for concentrating aqueous mixtures and particularly mixtures which contain volatile desirable components such as flavor constituents is disclosed. An aqueous feed mixture is cooled sufficiently to produce ice crystals therein. The ice crystals are removed from the chilled mixture to produce a liquid phase from which some of the water has been removed and which is therefore concentrated. The concentrated liquid phase is split into two portions, one of which is collected as a first produc...

Mineral aggregates, especially ores, that are found dispersed over a widespread remote area such as the ocean floor are gathered and at least partially separated from silt to concentrate minerals for transport to the sea surface. Mineral concentrator is adapted for movement over the deep sea floor and has means for gathering and separating dispersed mineral aggregates to provide a concentration of desired minerals for transport to the sea surface.

In the concentration of materials, e.g., a solution of polymers, by discharging the material from an expansion nozzle into an evaporating chamber, the degree of the concentration is increased so that the concentrated material is no longer fluid. Such operation is made feasible by disposing screw conveying means in the discharge of the evaporating chamber for withdrawal of the material. Efficiency of the concentration is increased. The material can be further concentrated in evaporating chambers ...

An apparatus for determining the concentration of a first component in a mixture of at least two components, which have different absorption properties in the IR range, comprises image recording means which are adapted to image the mixture by means of IR radiation to produce at least one image. The apparatus further comprises image processing means which, with the aid of intensity values for pixels in the image which represent the mixture, determine the concentration of the first component in th...

The invention provides an additive concentrate which comprises an oil soluble hydrocarbyl poly(oxyalkylene) aminocarbamate having a number average molecular weight (M.sub.n) in the range 600 to 10,000 having at least one basic nitrogen atom wherein said hydrocarbyl group contains 1-30 carbon atoms, and an oil soluble hydrocarbyl amine of formula R--NH.sub.2 wherein R represents a group R' or a group R'--CH.sub.2 --, wherein R' represents a hydrocarbyl group having a number average molecular weig...