DS-RI-01 Rev 2 - hatltd.com

1 Reactor -01 Rev2 AlphaPLUS design SHEETA lphaPLUSREACTOR INTERNALS- OVERVIEWHAT supplies a complete range of internals designed forgas/liquid/solidmixed phasereactorsin petrochemical applicationssuch as: Adsorbers andRegenerators HDS & Hydrotreaters Polymerisation Units Ammonia Reactors Reformers etcThese vessels tend to utilise licensed or proprietary know-how and hence there is arequirement to manufacture specialist internals built to the technology provider s brings particular expertise to these situations because oftheexperience andknow-howwe maintain in the detailed engineering of such examples of these internals supplied by HAT are shown ofconstruction have included carbon and stainless steels.

2 Inconel Baskets:SIDS lotted Inlet DistributorsAvailableplain or with wire mesh orwedge wire Wire Outlet BasketsA reinforced design to withstand thecompression FlowBasketsCustom engineered to retainthecatalyst whilst providingfree :RTD Gas/LiqDistributor TraysWidely used for multi-phase TraysA standard design where liquid hold-up is -01 Rev2 AlphaPLUS design SHEETRTXS pecialTraysCustomengineered andmanufactured to client s & Screens:FSFloating Screens- MeshAneconomic and effective barrierbetween media Fixed Screens- Wedge Wireor MeshA widely used bottom screen,resting on a support GridsA range of designs toaccommodate most these internals and their support beamscan be undertaken or checkedby HAT using the latest finite element design methods asper the exampleillustrated below.

3 Finite Element on Support Beam DeflectionBeam Deflection (vertical load only)Max Displacement & -02 Rev 3 AlphaPLUS design SHEETA lphaPLUS REACTOR INTERNALSHAT supplies a complete range of internalsdesigned for solid bed reactors such as: Molecular Sieve Treaters Activated Carbon Beds Desiccant Towers Catalyst BedsTy picalrequirementswillincludeAlphaPLUS inlet andoutletdistributorbaskets,wedgewire ( Johnson )supportscreens,floatingwiremeshscreens, supportgridsandconsumables such asceramic oraluminasupportballs, activatedcarbon,alumina andmolecularsieves(AlphaCHEM consumables are normallysupplied as part of an overall package).

4 BSInlet/Outlet BasketsThese are devices to ensure correctprocess fluid distribution as well as toprevent the exit of any large solid particlesfrom the vessel. Manyreactorsoperatewithregeneration cycleswhereflowreversal occurs, so the baskets aredesigned for two way an inner can with slotted perforations toprovide the correct openarea,velocityanddistribution profile, coveredwith a coarse mesh orwedge wirescreen and sometimes a finemesh filter layer, depending on Wire ScreensThis style of screen has taken a large sliceof the filter / strainer market from traditionalgauzes because of the obvious backflowself-cleaning characteristic due to thetapered shape of the used as bedsupports, the barsize is calculated tosupportthemechanicalloadimposed by the bed,and the spacing isselected to suit theflow and bed particle size wedge wire screens are manufacturedin sections to pass through vesselmanways.

5 And are usually themselvessupported on a lattice gridgiving furthermechanical & FXSMesh ScreensStandard mesh screens or gauzes are are available in avery wide range ofmeshsizes,wirediameters,materialsandwe aves and aregenerally a very economic inreactors includeFSFloatingScreens between layers of bed chemicals,FXSF ixed Screens to prevent exit ofparticles, andseals around the perimeter ofsupport plates or for & -02 Rev 3 AlphaPLUS design Typical Supports and Screens in aReactor150mm of1/2 Ceramic orAlumina Balls20 mesh SSFloatingScreen100mm of1/4 Ceramic orAlumina Balls100mm of1/2 Ceramic orAlumina BallsWedge WireSupport ScreenWedge WireSupport GridScreen I-BeamSupports20 mesh SSSealRing ScreenSupports & -02 Rev 3 AlphaPLUS design SHEETT able 1.

6 Common MeshScreenSizesMesh Size(Openingsper Inch)Wire SWGWire DiammAperturemm% sizes are also available in other wire diametersand % open areas. Weight is for 2. Wedge Wire DataNominalMesh SizeWireDepthmmWire Widthmm(Max)Aperturemm% above data is typical only screens are custom built to the application.