HMD5032PRESSURE VESSEL DESIGN*KOLEJ KEMAHIRAN TINGGI MARAPASIR MAS, KELANTAN

TOPIC 3 : INTERNAL VESSEL ATTACHMENT

INSTRUCTIONAL AIMSTrainees must be able;

State all components found in pressure vessel.

Explain about an internal component nature and functions.*

INTERNAL COMPONENTSInternal part of pressure vessel can classified into several types which that are:TraysBafflesWeirsVortex BreakersDowncomerInternal PipingDemistersInternal Ladder*

PART NATURE AND FUNCTION1. TRAYSIs a one part inside of pressure vessel which can be install whether with welded joint or bolted.

Usually the trays will be install inside of fractionating tower.

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PART NATURE AND FUNCTION (Cont..)Trays should be located in range of 18 inches to 24 inches in fractionating tower.

The function of trays is to split products to several different product by allowing vapour raise and reduce liquid.

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PART NATURE AND FUNCTION (Cont..)*TRAYS

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PART NATURE AND FUNCTION (Cont..)2. BAFFLESAlmost used in all pressure vessels.

Pressure vessel should have at least 3 units of baffle.

Usually, its made from straight plate iron or by round follow vessel shape.

Baffle are needed to stop swirl in a mixing tank.

Also can use to reduce sound when the vessel in normal operation.

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PART NATURE AND FUNCTION (Cont..)*BAFFLES

PART NATURE AND FUNCTION (Cont..)*Water baffle plates with screens contoured Baffle Plate

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PART NATURE AND FUNCTION (Cont..)3. WEIRSSheet-iron to form dam in pressure vessel.Function as place to collect something products before it can separate to another product.May be eliminated find out in fractionating tower.*

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PART NATURE AND FUNCTION (Cont..)4. VORTEX BREAKERS

Having various and different shape according to his use suitability.It is made from plate iron and shaped as a pallet.Usually are simple devices fitted at the gas or liquid outlets from a separator vessel.*

PART NATURE AND FUNCTION (Cont..)Vortex breakers are designed to:Eliminate gas carry under in liquid stream.Eliminate liquid carry over in gas stream.Eliminate re-entrainment of separated liquid phases.*

PART NATURE AND FUNCTION (Cont..)*VORTEX BREAKERS

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PART NATURE AND FUNCTION (Cont..)5. DOWNCOMERAre shaped like pipeline.

Fixed to weirs in pressure vessel.

It is a component which allowed liquid flowed down release weirs to other reservoir.

Commonly used in fractionating tower.*

*Unheated return tubes Header 3. Mixture tubes 4. Riser tubes (evaporator) 5. Overflow tubes 6. Unheated steam drum 7. Unheated downcomers

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PART NATURE AND FUNCTION (Cont..)6. INTERNAL PIPINGFormed of fine pipes or diametrical small.

Available in pressure vessel by coiled up, spiral or winding.

Function as heat transfer equipment in pressure vessel.*

PART NATURE AND FUNCTION (Cont..)*INTERNAL PIPING

PART NATURE AND FUNCTION (Cont..)*INTERNAL PIPING

PART NATURE AND FUNCTION (Cont..)7. DEMISTER

Is made from related cable layer.

The shape is like as netting.

Used to strain content resides within pressure vessel.*

PART NATURE AND FUNCTION (Cont..)*DEMISTER

PART NATURE AND FUNCTION (Cont..)*DEMISTER

PART NATURE AND FUNCTION (Cont..)8. INTERNAL LADDER

Is made from high capability iron.Each ladder connection must comply with security aspect.Function to enable somebody employee moving within pressure vessel to carry out works:MaintenanceInspection*

PART NATURE AND FUNCTION (Cont..)*INTERNAL LADDER

QUESTIONList out an internal vessel components.Explain about the function of weir in pressure vessel.Internal piping available in three conditions which that are?

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END OF CHAPTER 3THANK YOU*

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