catalyst crush strength apparatus

WO2016144315A1

A process may include shutting down a reactor in which ethylbenzene is undergoing dehydrogenation to styrene in the presence of steam and a catalyst adapted to catalyze dehydrogenation of ethylbenzene to styrene Shutting down the reactor may include reducing a temperature of the reactor Shutting down the reactor may include supplying a purge stream to the reactor...

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Apparatus for measuring the crush strength of solid

The crush strength may then be computed A suitable sample of catalyst or adsorbent consists of many particles and contains particles having wide variations in crush strengths It is therefore desirable to test many particles to obtain an average crush strength value representative of the sample The subject invention permits such rapid testing...

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Length to Diameter Ratio of Extrudates in Catalyst

monplace in the catalyst industry and that a large heuristic database exists The interpretation of the results is often ad hoc and few common rules of thumb apply Wu4 and Li5 give valuable insight into the intricacies of catalyst strength mea-surement Herein especially the single pellet crush strength test and the bulk crush strength test...

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Reforming Catalyst for Energy Saving Features Case Studies

A very high crush strength catalyst used in Oxygen fed AutothermalReformers Useful in secondary reformers in excess air/ oxygen rich environments where the combustion zone temperatures are expected to be much higher A Clariant Group Company Case Study 1 Outstanding performance...

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Crush Strength Apparatus with a Photocell Detection Unit

Dec 29 2004 0183 32 An apparatus utilizing a photocell detection system was designed and built to measure the force required to crush a spherical particle 005 to 05 mm in diameter The force applied to the particle causes a variation in light area on two matched photocells...

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Standard Test Method for Determination of Bulk Crush

11 This test method covers the determination of bulk crush strength of a bed of formed catalyst particles 1 / 32 to 3 / 16 in 08 to 48 mm in diameter and is intended to provide information concerning the ability of the catalyst material to maintain physical integrity...

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Crush Strength Apparatus with a Photocell Detection Unit

An apparatus utilizing a photocell detection system was designed and built to measure the force required to crush a spherical particle 005 to 05 mm in diameter The force applied to the particle causes a variation in light area on two matched photocells The signal from the unbalance in the photocells is recorded without amplification on a millivolt recorder as the particle is crushed...

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ASTM D6175

Standard Test Method for Radial Crush Strength of Extruded Catalyst Particles 1 Scope 11 This test method is suitable for determining the resistance of extruded catalysts to compressive force from the side 12 This test method was developed using extruded catalyst from 1/16...

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Single pellet crush strength testing of catalysts

Properties characterized include surface area crush strength microactivity of fluid cracking catalysts particle size unit cell dimensions and metal content Most often commercially available instruments were used in the testing In some cases however an apparatus of a specified design was required...

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Sorbent Structural Testing on Carbon Dioxide Removal

Strength of Formed Catalysts and Catalyst Carriers10 and in modified form D6175-03 Standard Test Method for Apparatus for Pellet Crush Strength Testing Figure 2 Schematic of MTF test stand to maintain sorbent material conditioning for humid single pellet crush testing...

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US3906782A

An isostatic test system useful for the isostatic testing of frangible structures such as honeycomb ceramic monolith structures useful as catalyst supports is provided by a combination of elements including means for providing a pressurized fluid a rigid container a pressure-expansible fluid impermeable means for receiving the pressurized fluid and adapted for insertion within said...

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Mechanical strength and reliability of solid catalysts

Apr 01 2004 0183 32 19 of three spherical catalyst samples Single-pellet crushing strength Bulk crushing strength No m β M B 1302 383 10 -6 302 00266 2356 181 10 -6 318 00918 3287 140 10 -5 280 01190 For other catalyst shapes the measure of percentage of broken catalysts is impractical but percentage of fines pass- ing a definitive sieve is a...

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Solid Catalyzed Gas Phase Reactor Selection

Oct 17 2013 0183 32 Imposed stresses on the catalyst can be quite high in certain conditions Janssen ref Janssen H A Versuche über Getreidedruck in Silozellen Z Verein deutscher Ingenieure 39 No 35 pp 1045-1049 1895 analysis can be used to predict initial stresses quite accurately to compare with catalyst crush strength results...

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Examiner Soliman Haytham of Art Unit 1736

Crush Strength And Porosity Of An Alumina Carrier For Enhanced Vam Catalysts Rejection information available with a Premium Stats subscription See our pricing Patented View 14959981 Method For Preparing Ferrite Catalyst Abandoned View 16140653 Exhaust Gas Purification Catalyst Patented View 15311932 Mineral Recovery Using...

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Mechanical strength of porous catalyst carriers SpringerLink

Jun 01 1988 0183 32 Experimental data from Side Crushing Strength SCS tests on porous catalyst carriers show a wide variance in elasticity and breaking strength We should like to find the physical parameters that determine these properti The computer model is based on a two-dimensional network of Hooke-type springs with an eigenlength and a load limit...

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Standard Test Method for Single Pellet Crush Strength of

12 This test method determines the average crush strength in the range from 0 to 50 lbf 0 to 220 N Some materials may have crush strengths above 50 lbf 220N the test method is applicable to these materials but the precision of the test is not known...

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Effect of the mechanical failure of catalyst pellets on

Sep 01 2003 0183 32 1 Introduction The mechanical strength of solid catalyst is one of the key parameters for the reliable and efficient performance of a fixed bed converter and has been an important research field Andrew 1981 Denny Twigg 1980 Fulton 1986 Gallei Schwab 1999 An extensive discussion on the mechanical strength measurement of solid catalysts was done in an AIChE...

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Catalysts Adsorbents

The apparatus is delivered with 2 sets of hammer / anvil one for spherical catalyst grains and one for extrudates and tablets The method is carried out on a sufficient number of grains in order to be able to calculate realistically an average value for the results A sample of 50 to 100 g of catalyst is taken and...

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Standard Test Method for Radial Crush Strength of Extruded

Radial Crush Strength of Extruded Catalyst and Catalyst Carrier Particles1 This standard is issued under the fixed designation D 6175 the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision A number in parentheses indicates the year of last reapproval A...

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Bulk crush testing of catalysts Conference OSTIGOV

article osti_5042090 title = Bulk crush testing of catalysts author = Bradley S A and Koves W J and Pitzer E abstractNote = Catalysts have to be sufficiently strong to endure the rigors of handling and use For examples the catalyst must be strong enough to withstand the loading into a reactor The catalyst also cannot attrite or breakup due to the weight of the bed gas flow...

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Length to diameter ratio of extrudates in catalyst

Sep 15 2015 0183 32 For a comprehensive overview of typical catalyst strength measurements and their importance in applications we refer to Le Page 1 Woodcock and Mason 2 Bertolacini 3 Wu et al 4 and Li et al 5 Herein especially the single pellet crush strength test and the bulk crush strength test are described The latter is also established as the...

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MECHANICAL TESTERS OF CATALYSTS AND ADSORBENTS

CATALYST CRUSHING STRENGTH TESTERS ASTM D4179 ASTM D6175 ASTM D7084 SMS-1471 characteristics are measured to determine this mechanical strength the crush resistance and the attrition/abrasion resistance The high versatility new generation catalyst crushing strength tester the apparatus allows...

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Apparatus for measuring the crush strength of solid

I claim 1 In an apparatus for measuring the crush strength of a solid particle the combination of a counter-weighted beam hinged to a stationary base said beam being wider than it is deep two anvils for clamping said particle between them one of said anvils attached to said beam for applying force to said particle and other of said anvils for supporting said particle in place and a rigid...

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Method for controlling the change in the crush strength of

The crush strength of a catalyst precursor particle can generally be readily controlled by simply programming or adjusting the settings of the apparatus eg a tabletting machine used to shape the particle However one particular problem in achieving the desired manufacture mentioned above is that the crush strength of the catalyst particle...

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Standard Test Method for Determination of Bulk Crush

how the catalyst will crush in a reactor or bed For some catalysts such as granules this technique may be the only viable method for obtaining crushing strength The production of 222 nes in a reactor is not desired because of the potential of bed compaction and the pressure buildup in the reactor 6 Apparatus...

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Equipment For Measuring The Crushing Strength Of Catalyst

catalyst crush strength apparatus wildehafcoza catalyst crush strength apparatus As a leading global manufacturer of crushing grinding and mining equipments we offer advanced reasonable solutions for any size crushing strength equipment for tablets...

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