The Chemical Age 1956 Vol.76 No.1956
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7- A VOL. LXXVI No. 1946 'Hazards of 27 October I956 Radioactive Materials (See page 172) The plate heat exchanger C has the answer. FoR INNUME~A~LEdutiesthe APV Paraflow plate heat exchanger is proving to have outstanding advantages and " is in rapidly increasing use. Here are the reasons:- I I 1 High rate of heat transfer-at least 50% better than con- ventional types for the same order of pressure drop. I 2 Compactness-very small floor area. 3 Full accessibility of all liquid-bearing surfacesit can be I opened in minutes. I 4 Flexibility-it can readily be sectioned to include a number of heating and cooling duties as well as regeneration up to 85 % in one frame. 5 Ease of modification-its capacity can easily be increased or decreased or its duty changed. 6 Small temperature " Split "-ability to work to small end temperature differences, resulting in more accurate tem- perature control. 7 Small liquid hold-upfar smaller than a tubular heat exchanger. 8 Interchangeable components-plates can easily and quickly ~~.p~~$~; be replaced. are avaikzbk A 9 Alternative materials of construction-while plates are normally in stainless steel other metals can be supplied. 10 Wide range of capacities. *: .I I. PARAF$~JW~I".. .. .. The A.P.V. Company Ltd., Manor Royal, Crawley, Sussex Telephone: Crawley 1360 Telemms & Cahler Anarlaatir1 rmsul- ii THE CHEMICAL AGE 27 October 1956 27 October 1956 THE CHEMICAL AGE 157 d biirriry o/ Scr iii:. Type 1.711, Whatever your nlix~ngrequirements may Class B.B. Utiiversnl ,bfixers. be Baker Perkins can ofler you author- itative and objective guidance, deriving from 75 years experience in the vast field in which mixing forms part of industrial processes. They advise on familiar pro- blems and experiment to solve new ones equally without fee or obligation. $ T11k booollc~ ~llurrraresond describes L'niversnl Mixing Machines br rypes, sizes and cnpacirie~ ch~rrocrrrirric Bzs 12 ti,~n.ersoi He.ny Duty Fully jackefed for rnnperarure Mixer for Rubber and Plos~~cs. conrrol and wirh pressure ram Copaciry per njrx 9 Imp. gollo~e. acrsared hydraubcaily or pneu- H.P 40. rnnricaNy as preferrd 158 THE CHEMICAL AGE 27 October 1956 INDEX TO ADVERTISERS TheJirstfigures refer to advertisement in The Chemical Age Year Book, the second to the crirrent issue - -- - -- Page Page Page Page Pace Page 283 A.P.V. Co., Ltd., The front cover Spine British Resin Products Ltd. - 250 Dowlow Lime & Stone Co., 21 6 Acalor (1948) Ltd. - 372 British Railway Traffic & Ltd., The - 277 Amrington Brick & Tile Co., Electric Co., Ltd. - Dring & Fage Ltd. - Ltd., The - 256 British Rototherm Co. Ltd. The - 258 Dmnmond Patents Ltd. - 229 Adequate Weighers Ltd. - 166 British Steam Specialties Ltd. - 257 Dryden, T., Ltd. cov. iii 270 Aimer Products Ltd. - 236 British Tar Products Ltd. - 280 E.C.D., Ltd. - 158 Albany Engineering Co. Ltd. The - British Thomson-Houston Co. Ltd. - Edison Swan Electric Co., Ltd. - 294 Alcock (Peroxide) Ltd. - Electronic Switchgear 159 Alexander, Herbert, & Co., Ltd, - 292 British Titan Products Co., Ltd. - 259 Electrothermal Engineering Ltd. - Thomas, & Sons, Ltd. - Alginate Industries Ltd. - - B/Mk. Elliott, H. J., Ltd. - 191 Brooks & Walker Ltd. 211 Elliott Brothers (London) Ltd. - 178 Allen, Edgar, & Co., Ltd. - 209 Brotherhood, Peter, Ltd. - 370 Alumina Co., Ltd., The - 230 English Glass Co., Ltd., The 184 232 Brotherton & Co., Ltd. 161 G/Cd. Erinoid Ltd. 366 Amalgamated Oxides (1939) Ltd. - Brough, E. A,, & Co., Ltd. - - 186 Angel, H. Reeve, & Co., Ltd. - 296 Evered & Co., Ltd. - 214 Browns Foundry Co., Ltd. - Ewart, M. D., & Co., Ltd. 183 Armour & Co., Ltd. - - G/Cd. Ashmore, Benson, Pease & Co. - 260 Brush Design Group, The 288 Farnell Carbons Ltd. - 274 Bryan Donkin Co., Ltd., The - 289 Ashworth, Arthur, Ltd. - - Faw.e:t Finney Ltd. - 386 Audley Engineering Co., Ltd. - 290 Buell (1952) Ltd. - 228 Feltham, Walter H.,& Son Ltd. - 146 Autometric Pumps Ltd. - 273 Burnett & Rolfe Ltd. 230 Ferris, J. & E., Ltd. - 190 B. A. Holland Engineering Bush, W. J., & Co., Ltd. - 264 Film Cooling Towers (1925) Ltd. - Butterworths Scientific Publica- 21 1 Fisher Governor & Co.. Ltd. - Co., Ltd., The - - B.X. P;astcs Ltd. - tions 159 Foster Instrument Co., Ltd. - 295 Baird & T?tlock (London) Ltd. - 213 Buttefield, W. P.9 Ltd. - 227 Foxboro-Yoxall Ltd. - 171 Baker Perk~nsLtd. Calder Vale Glassworks Ltd. - Fraser, W. J., & Co., Ltd. - 350 Baker Platinum Division, Callow, F. E. (Engineers) Ltd. - 314 Fuller's Earth Union Ltd., The - Engelhard Industries Ltd. - Callow RockLimeCo. Ltd.The - 182 Gallenkamp, A., & Co., Ltd. - 225 Balfour, Henry, & Co. - 364 Candy Filter Co., Ltd., The - Geigy Co., Ltd., The - 222 Barclay Kellett & Co., Ltd. - 264 Carbon Dioxide Co., The - 276 Geigy Pharmaceutical Co., Ltd. - 215 Bennett, Sons & Shears Ltd. - Cekop Trading Corporation - General Electric Co., Ltd. - G/Cd. Berk, F. W., & Co., Ltd. - Chapman & Hall Ltd. - 243 Grazebrook, M. & W., Ltd. - 282 Beryllium & Copper Alloys 207 Chemical Workers' Union, The - 226 Greeff. R. W., & Co., Ltd. - (Safety Tools) Ltd. - Chemicals & Feeds Ltd. - 222 Grindley & Co., Ltd. - 263 Blundell & Crompton Ltd. - 354 Chemitrade Ltd. - 226 Hackbridge & Hewittic Electric 148 Borax Consolidated Ltd. - 275 Chesterfield Tube Co, Ltd., The - Co., Ltd. - Borax & Chemicals Ltd. - 297 Ciech Ltd. - 240 Haller & Phillips Ltd. - 237 Boulton, William, Ltd. - 248 Cinema Television Ltd. - 266 Hanovia Lamps - 236 Bowmans Chemicals Ltd. '58 244 Clark, T. C., & Co., Ltd. - 218 Harris (Lostock Gralam) Ltd. - 290 Braby, Fredk., & Co., Ltd. - 173 Clayton DyestuffsCo. Ltd.The - 258 Hawofih, F. (A.R.C.) Ltd. - 231 Bramigk & Co., Ltd. - 176 Clayton, Son & Co., Ltd. - 161 Hearson, Charles, & Co., Ltd. - 252 Brannan, S., & Sons, Ltd. - Clydesdale Chemical Co. Ltd.The 164 220 Herbert, Alfred, Ltd. - 21 1 Bristol's Instrument Co., Ltd. - 183 Cole, R. H., & Co., Ltd. - Holmes, W. C., & Co., Ltd. - British Acheson Electrodes Ltd. - 238 Cole & Wilson Ltd. - 194 Honeywill & Stein Ltd. - 232 British Arca Regulators Ltd. - 196 Collins Improved Firebars Ltd. - 279 Hopkin & Williams Ltd. - 268 British Assoc. of Chemists The - 356 Comet Pump&Eng.Co. Ltd.The - 4 Huntington, Heberlein&Co. Ltd. - British Carbo Norit Union Ltd. - CostainJohn Brown Ltd. - I.C.I. Limited, Billingham - British Ceca Co., Ltd., The - 256 Crockatt, W., & Sons, Ltd. - I.C.I. Plastics-Fluon. - 292 British Chrome & Chemicals Cromil & Piercy Ltd. - Imperial Chemical Industries Ltd. - Ltd. (London) - 157 Imperial Smelting Corporation 169 Cruickshank, R., Ltd. - 254 British Chrome & Chemicals (Sales) Ltd. - 328 Cyanam~dProducts Ltd. -. Ltd. (Lancs) - International Combustion British Drug Houses Ltd., The 250 Cyclops EngineeringCo. Ltd. The - - 254 Cygnet Joinery Ltd. Group - British Electrical Development - Isopad Ltd. - Association - 298 Danks of Netherton Ltd. - 278 Jackson, Henry (Liverpool) Ltd. - British Geon Limited - 238 Davey, Paxman & Co., Ltd. - 382 Jackson, J. G., & Crockatt Ltd. - 8 British Industrial Solvents - Dawson, McDonald&Dawson Ltd. - I 85 Jenkins, ~obert,& CO., ~td. - 330 Derby Luminescents Ltd. - & , 187 Jenkinson, W. G., Ltd. - 234 235 British Laboratory Ware - Association Ltd. - Dia Chemieausruestingen 3 Jobling. James A., & Co., Ltd. - 233 British LaBour Pump Co., Ltd. - 177 Dorr-Oliver Co., Ltd. - 210 Johnson, G. T., & Co., Ltd. - 239 British Lead Mills Ltd. - 248 Douglas, William, & Sons Ltd. - [continued on page 160 LACTIC ACID 1 for TANNING . TEXTILES . CHEMICALS PRINTING INKS . BREWING . SOFT DRINKS PICKLES . SWEETS . CONSERVES CHEMICALS CARBOYS . PACKED CARBOYS CARBOY TILTERS AND BARROWS BOWMANS LIMITED SAFETY CRATES TOP PROTECTORS WIDNES LANCASHIRE 27 October 1956 THE CHEMICAI; AGE FLUID LEVEL CONTROLS CONTROL A.C SUPPLY STARTER FIG I FIG 2 FIG. 6 HOLDERS DIPSTICKS An extensive range of single- and double-circuit level controls with simple dipstick - HIGH LEVEL electrode fittings cover practically every known application involving the automatic level control of electrically conductive fluids. The controls are notable for their high adjustable sensitivity, reliability and economy. PUMPING RANGE Other items in our standard range include controls for- Powder Level Furnace and Machine Electrolytic Conductivity LOW LEVEL Counting Safety Conveyor Blockage Inspecting Packaging Detection TANK '- Botching Temperature Paper Break and Sorting Automatic Timing loin Detection etc. FIG 7 and a host of other functions Fully descriptive tllustrated literature immediately available upon request. ELECTRONIC SWITCHGEAR I'PCP,",Nd 47 VICTORIA STREET . LONDON S.W.1 Telephone : ABBEY 2771 Works : Works Rd., Letchworth, Herts. Tel : Letchworth 1853 Each job has its problems. Chemical Plant construction-Specia- lised Lead Fabrications, each receives the same meticulous attention to detail and careful planning - that is the hall-mark of any Mills Packard undertaking. however big or small. Let us examine your problem - our long experience is at your service. Chemical Engineers & Contractors Construction Company 1s PACKA1 RD Limited DUKE STREET, IPSWICH, SUFFOLK. Tel. 2177 @ 160 THE CHEMICAL AGE 27 October 1956 INDEX TO ADVERTISERS Thefirstfigrrres refer to advertisement in The Chemical Age Year Book, the second to rhc current issue Page Page Page Page 206 Johnsons of Hendon Ltd. 253 Mitchell, Cotts & Co., Ltd. - Simon, Richard, & Sons, Ltd. 'O' 201 Jones, Tate & Co., Ltd. Mond Nickel Co., Ltd., The - 320 Southern Instruments Computer 21 6 K.D.G. lnstruments Ltd. Monsanto Chemicals Ltd. - Division 266 K.W. Chem cals Ltd. Moore,