Separation nozzle process equipment

Two injection units are used in this method, which are joined through a specially designed nozzle. In the Battenfeld design, the nozzle is equipped with two separate concentric channels that can be independently, operated, opened, and closed hydraulically. This allows the process sequence to be carefully controlled. 

A typical non-condensible blowdown drum and its associated equipment and headers are illustrated in Figure 1. A single blowdown drum may be used for more than one process unit, if economically attractive. However, when this is done, all units served by it must be shut down in order to take the drum out of service, unless cross connections are made to another system of adequate capacity. Normally all closed safety valve discharges are combined into one header entering the drum, although separate headers and inlet nozzles are acceptable if economically advantageous. The following releases are also normally routed into the safety valve header ... 

Separation processes of gas-liquid (gas-condensate) mixtures are considered in Section VI. The following processes are described formation of a liquid phase in a gas flow within a pipe coalescence of drops in a turbulent gas flow, condensation of liquid in throttles, heat-exchangers, and turboexpanders the phenomena related to surface tension efficiency of division of the gas-liquid mixtures in gas separators separation efficiency of gasseparators equipped with spray-catcher nozzles of various designs - louver, centrifugal, string, and mesh nozzles absorbtive extraction of moisture and heavy hydrocarbons from gas prevention of hydrate formation in natural gas. 

Different zones can also be defined in combination with distributor plates, as depicted in Fig. 7.38. Such a horizontal fluidized bed unit has an extended rectangular design of the process chamber The gas distributor usually has a transport effect, moving the solids from the inlet to the outlet in continuous operation. Segmentation is performed by subdivision of the plenum and by the placement, or not, of nozzles. Since each of the different compartments of the plenum can be equipped with a separate gas supply, it is possible to conduct various sequences of processing steps. For example, a product can be granulated in the first and second segments, dried in the third, and cooled in the final fourth section (Fig. 7.38). 

As a property of Vanyukov furnace, the layer under the nozzle is much quieter. The liquid droplets formed on the upper layer will enter this layer and separate by their density automatically. This is also the reason why there is no need for clarification equipment in the Vanyukov process. 

The characteristic feature of gas injection moulding technology is the filling of a form with two different materials. Plastic materials form the first component. The second component consists of a gas, generally nitrogen (N2). The two components do not mix. All standard injection moulding machines which are equipped with a device for introducing gas are suitable for the GIT process. The injection of the gas may be performed by a machine nozzle or by a separate injection module in the mould. 

When the solids and the density difference is small and the flow volume is large, disk nozzle centrifuges are often the best means to accomphsh the ptuification. The separation, which takes place within the rotor of a disk nozzle centrifuge, is effected by the G force, the rising rate of the Uquid (related to the feed flow) and the separation area provided by a set of conical, close-spaced disks as well as the process factors of fluid viscosity, particle size, shape, and density. In addition, the design of the equipment must allow for the quantity of solids to he handled, the flow characteristics of the slurry, and other practical engineering considerations. 

---