Machines, centrifugal

Japan is building a 7000-machine centrifuge pilot plant to operate in 1979 and is considering a 6 million SWU/year production plant to start operation in 1985. 

Hydraulic resistance machines centrifugal type represented by the sum of the resistances of the cylindrical device, swirler and exhaust pipe. The resistance of the cylindrical part of the theoretically calculated for different distribution laws tangential velocity. 

The processing of the experimental data suggested an empirical equation for calculating the coefficient of hydraulic resistance machines centrifugal t5q)e. 

There are two general ways to compress gas in a refinery. Either a positive-displacement or a dynamic-type machine can be used. A reciprocating compressor is an example of a positive-displacement machine, whereas a centrifugal compressor is a dynamic machine. Centrifugal compressors are relatively ... 

G A Milliken. K E Topping. (Bird Machine) Centrifugal separator. US Patent 2600372, 16 December 1949... 

Dynamic machine Centrifugal pumps and centrifugal compressors are dynamic machines. They convert velocity imparted by the impeller to the fluid into fluid pressure. 

Fixed-Bed Centrifuges. The simplest of the fixed-bed centrifuges is the perforated basket centrifuge (Fig. 31) which has a vertical axis, a closed bottom, and a Hp or overflow dam at the top end. Some domestic machines of this type are ia use for straining vegetable or fmit juices. Ia the iadustrial versioas, the basket housiag is oftea supported by a three-point suspeasioa called the three-column centrifuge. 

It was concluded in 1975 that centrifugal secondary compressors with a dehvery pressure of 200—250 MPa (29,000—36,000 psi) would be feasible for ethylene capacities of more than 100,000 kg/h. However, in order to replace the primary compressor with a centrifugal machine, it would be necessary to increase the throughput to 200,000-250,000 kg/h (176). Rotary machines have yet to be used in LDPE plants. 

Compressors. There are two basic types of compressors centrifugal and reciprocating machines. The centrifugal compressor is usually used... 

Disk machines having nozzles to discharge the soHds phase through small backward-pointing nozzles must have this power included in the calculations. Some thickening scroU centrifuges also use such nozzles, usuaUy with an intermittent flow. is the nozzle power ... 

In general, soHds-retaining batch and batch automatic machines are limited to low feed concentrations to minimize the time required to unload the soHds. Continuous disk centrifuges can have higher feed concentration. The limit is the underflow concentration. Conveyor discharge centrifuges can handle high feed concentration and are limited only by the volume of soHds displacement, or torque capacity. 

Centrifugal Sedimentation Equipment. Commercial sedimentation centrifuges are characterized priacipaHy by how soHds are discharged, and the general dryness of these soHds. There are batch and automatic batch soHd bowl machines which coUect the soHds at the bowl wall. SoHds are removed very dry. Almost any soHd is coUectable, even those that are very soft and compressible. 

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