Sieve Tray is a perforated flat designed plate, which is widely applied in industry process.
Dual flow trays are sieve trays without downcomers, which are originated from countercurrent flow of the vapor and liquid through the perforations.
Advantages of Sieve Trays :
Good operating effectiveness,
Simple design
Low cost and easy maintenance .
Be resistant to heavy fouling services and offering high capacities.
Disadvantages of Sieve Trays :
Low flexibility
Low to moderate performances.
Advantages of Dual flow trays:
Vapor rate maintains the plate liquid level and the hole size will be defined for optimizing the performance.
When dual flow trays have high open area,capacity tend to be higher and pressure drop tend to be lower, being particularly suitable for containing a moderate to high solids content
Distillation column
The column internals provide a contact place for mass transfer and heat transfer for the gas-liquid phase and liquid-liquid phase; There are two main types of column internals: packed column and trayed column. The packing column internals mainly include packing, liquid distributor, liquid collector, redistributor, gas distributor, packing fastening device, packing support device; trayed column internals mainly include: tray, liquid collection tank (trayed column), tray support device (trayed column), feed distributor, gas feed and distribution device and mist eliminator.
Distillation trays
To ensure vapor and liquid phases contact intimately with distillation trays,a distillation process is defined as below: First ,mixture of vapor and liquid will form froth,within which mass transfer will occur then the froth will overflow across a weir .Next, the vapor will be released upwards to the upper tray ,and the bulk liquid will flow downwards to the next tray.
Feed diffuser is diverting the incoming flow from the inlet nozzle towards the reactor.
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Liquid Distributor Tray
Liquid distributor tray ensures flow distribution over the entire vessel cross section.
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Support Grid
The support grid serves as a catalyst retention device, spanning the entire cross-section of the vessel.
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Outlet Collector
Outlet collector is collecting the flow from the reactor towards the outlet vessel nozzle.
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Quench System
In multi-bed reactors, the process may require a cooling phase between two beds. This can be achieved by injecting a fluid, which is then collected, mixed, and redistributed over the subsequent bed.
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Center Pipe
The center pipes inside the radial flow reactors are used for flow
collection or distribution. They are typically cylindrical, with the
outer layer defining the boundary of the catalyst bed.
During the design and manufacturing phases, we implemented control procedures to enhance process efficiency.
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Scallops
The center pipes inside the radial flow reactors are used for flow collection or distribution. They are Scallops inside the radial flow reactors are for flow collection or distribution.
It is generally D-shape, extending parallel to the inner vessel wall,and its inner layer delimits the outer layer of the catalyst bed.
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Outer Basket
Outer baskets inside the radial flow reactors are for flow collection or distribution.
It is concentric by center pipes and its layer delimits the outer layer of the catalyst bed.
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Disc Filter
Disc filter is used in petrochemical industry,separating the solid residue from PTA. This reactor internal is the bottom filter of PTA hydrogenation reactor,being made of expensive Hastalloy C276. It can be applied under high temperature (350°C) and pressure (10MPA).
Polycrystalline silicon hydrogenation reactor internals is made of expensive 800H,which costs 8 million RMB. Ekaislot supplies exquisite welding technique as 800 H is rigid and wearable, being applied under high temperature and pressure.