Document OLYjVrQ6ZBkqdjgx7EdK2b4e

MANUFACTURING CO .1 EQUIPMENT FOR THE FOOD AND CHEMICAL PROCESS INDUSTRIES WEST CHESTER, PENNSYLVANIA SANTA ROSA, CALIFORNIA RKIM.V Tt> 1 eoar. q. f j d x WEST CHESTER, PA, Cl Wc h C-G.3'13 August 8, 1963 % I. Du Pont Be Honours & Co*, Inc* Hewport Plant Hewport, Delaware '; Attentions Hr* A* M. Auster Pigments Department Dear Mr. Auster* Ve have taken a look at the pigment presscake drying problem you have outlined to us last week* Provided this material does not stick to heat transfer surfaces too severely and does not form little caseharden lumps which are extremely slow to dry, ve vould estimate that 150 lbs. per hour could he easily dried with approximately bOO sq. ft. of heat transfer surface. J This, in Type 30b stainless steel, vould cost approximately $b0,000*00 to $50,000.00. You would have to add qsproximately $5,000.00 for drive and rotary joint to this, so the total value of the equipment would be in the neighborhood of $b5,000.00 to $55,000.00 f.o.b. the West Coast. The size of this equipment could perhaps he adjusted to suit your particular needs but a single unit 15 ft. long with 28" diameter screws, mounted side-by-side and so arranged as to give a recirculating bed of pigment, would be one approach. The total floorspace requirement in this case would be approximately 18 ft. long x 6 ft. wide and the equipment would require approximately b ft. from top inlet to bottom. There would be a side overflow discharge. A typical small unit of the same type is available here at West Chester for test purposes. It is shown in the attached photographs E-lOb and &-106. A couple of other views sure shown in our photographic Sheet T-5b05 and T-5b06, attached. This test unit has 8" diameter screws and is four feet long. It contains approximately 3 cu, ft. of material, when filled, flush with the top of the screws. We are not in a good position to fun drying tests now as ve are in the throws of a small building program and installation of a new steam boiler, which Will considerably improve our capabilities in this direction. We would suggest that should you be interested in a test that it be scheduled for approximately six weeks from now; certainly not less than four from now. Our charges for such a test are $200.00 per day and ve vould think that we could probably accomplish two runs in a day*s testing, though occasionally only one test run is carried out in a day*s time.. Let us hear from you if this seems to have any promise of interest. We, of course, are anxious to serve as best ve may. ^ Yours very truly. RBDsWb Encs 10b, 106 5b05/6 USERS REPORT* ) RIETZ TJ Series Thermascrews provide uniform, fully effective Heat Exchange for difficult materials TJ's ARE HIGHLY CONTROLLABLE Quantity, temperature and rate of flow of heating or cooling medium are easily regulated. Quantify and retention time of product are fully controllable. TJ's ARE COMPACT, HIGH CAPACITY UNITS FOR CONTINUOUS HEAT EXCHANGE TJ's ARE EXCEPTIONALLY EFFICIENT HEAT EXCHANGERS Hollow screw and jacketed trough present a very high ratio of heat transfer surface to product volume. Gentle, slow-speed action minimizes particle-size degradation. Dust-tight, vapor-tight construction is available. Easily accessible contact parts permit quick, thorough cleaning. Rugged Rietz construction reduces maintenance requirements. Standard or ASME Code. *SOME USERS: Allied Chemical Co. American Cyanamld Co. Armour & Co. Beech-Nut Pocking Co. California Packing Carp. Campbell Soup Co. e Canadian Chemical Ca. e Chat. Pfixer Dow Chemical Co. E. I. du Pent do Nemours Co. Eastman Kodak Co. Herskey Chocolate Co. Horn & Hardart e Kraft Poods Libby, McNeill & Libby Monsanto Chemical Co. New England Lime Co. e Ocean Spray Cranberries, Inc. Vidor Chemical Co. Wyandotte Chemicals Coin)!. fmmm /. Tmmzwsmr: ? m ifvvf::?.' \ i:' ;7:" : B:\ht % '^SJ ,,> , /A t A * & fe' nk 1'' v`. >. viu&L*`j- , Mm 'v / vV-' ; Above shows basic operating principle of Rietz TJ Series Thermascrews. Various modifications of this basic design adapt TJ*s for use with a va riety of heating fluids or coolants to meet special product requirements. Left shows an installed 24" x 30' Rietz Thermascrew. Note complete accessibility of heat exchange surfaces. MAIN OFFICES; Santa Rosa, California; West Chester, Pennsylvania FIELD OFFICES: Chicago, Illinois; Seattle, Washington; Houston, Texas :A M 1 N39952.01 DUP050054403 r - - <* P O TJ SERIES THERfiSASCREWS HOLLOW SCREW WITH JACKETED TROUGH tMtafli.isfe ftiuf COOLING CRYSTALuZiNG aamoaaasHffi <& m mM EFFICIENT CONTINUOUS HEAT EXCHANGE FOR POWDERS GRANULAR SOLIDS , PASTES VISCOUS MATERIALS and many classes of materials that are not adaptable to other heat exchange methods . EVAPORATION OF VOLATILE ELEMENTS FROM PASTES AND SOLIDS DUST-FREE COOLING OF PRODUCTS DIRECT FROM KILN DUP050054404