Document xd1nbwm6aY8RGDEdNRkDgB0Mm

BIDDLE *lndtnummt `Ttecvd. M--o-re- TECH-N-I-C-AL ccnu/mct, U is csiimsted thsi ^ pressed air coal for the project*, pulverized coal analyzing 200 1)5. Sieve Is approximate!* /r i (2000) Jt( 13.08) *{U)/1000 *\ centa/ion. This U comparihU cost of electricity in the operuleo' ball mill*, normally ranglag ^ 22 eenu/loa coil pulverized, ha*^ an electrical energy cow of 0.\ trilowaU-Kour. APC Paper, ne assures metallurgical soundness 'lib, 0UC1ER tow BtSlSIANCt OHMMEUR MGAW TaCmOSCO'E JAGAfii tACHQMtltRS A SPCCO INDICATORS ...helpful to Power and Plant Engineers We are constantly publishing new technical bulletins on Biddle Instruments. Ccncroualy illustrated with phologruphs and charts, they contain much helpful information for the practical man in power and plant engineering, and preven* tivc maintenance. A complete list of our newest bulletins will be moiled. Just fill out ond return the coupon below for BULLETIN 1900-P. JAMES G. BIDDLE CO. ` :: :V:.. etSCTRICAlJT.eSTIN.0 '.'INSTRUMENTS'^ ''-iI ,! ir* nu n. r~ James C. BldJla Co. 1316 Aroh Si., Phil*. Gentlemen; 7. Pa. mu 1 SPEGDMEA5URING i>isiRUMiNts,fev Pleiie tend mo lilt of newest Diddle literature: _ O 1900-P. . J (Laboratory asointific EQUIPMENT- ; . JO* fURCTTOU 1316 ARCH STREET, PHILADELPHIA 7, PA The Poper Mill Power Plant. /}, u C Austin. 01 *1 Tbc paper industry coiuUu | *oi paper mills and 2S5 pulp mills aemJf, throughout the United States ted Wfl combined capacity of about 24,000$ tons of paper per year. The ^ range from lightweight tissues lo hes^ container boards with each type, neb and grade having specific steam b, power requirements. A small mfl| have a steam consumption of 20,000 Q per hr and a power demand el ] kw, while steam usage In the In., mills may avenge 500,000 lbs per*E with power demands over 25,000 k Demands for low pressure irRiq j. heavy so the average paper aad polS mill hss the opportunity to economieaflf generate all or port of Its electrical n quiremenU. It is on this bull that a most every power plant in the iadoftr la designed. Paper mills built 25 to S years ago were able to obuia this bsl once wftb 150 or 200 pal utenie steam. But, ns drying pressures i raised ond electrical demands lucres higher initial steam preomres and U>* peraturei beeamo necessary. As to sh ternate to insielllng new higher pre* sure boiler* end turbines, many mill* turned to purchased power. Cost* quentty, the average paper m)U |Ur entea steam at two or sometimes thrt* pressures, produces part of its P***? on back pressure or attraction turbine* and purchases the balance of It* qulrements. Furthermore, as steam aw power loads ore always on the incre** the average power plant seldom h**l reserve capacity. J The successful operation of a po*^l plant In the paper Industry net oajf J involves good operating practices Wj requires a complete knowledge o( tk* -j processes In the paper mill luelf* ,3 find that it is usually up to the pews1 j engineer to check steam and pwjr i usage, Initinle changes In process recommend new equipment In the m J which will maintain a heat balance J alleviate e steam or power shortil6, J (Continued on page 232) POWER SCFTEMBl* ] ['One. of.monyfcomprehensive \jV cLoadduisrehs ffdobro.arassTuorriyn^gjMreiyli.apbrpleV ^''J 1 ' performance*,^ ` ,*-** -- M*. . -r-T.---1 .y\l . Ladish measures the spectrum to verify chemical composition timTO PROGRESS Metallurgical integrity--Is safeguarded at . ladish by unsurpassed laboratory controls. Typical is this advanced electronic directreading spectrograph. On this unit as many as 500 determinations have been made in one hour to verify compliance of each mill beat with exacting Ladlsli specifications ond, equally important, to assure the Absence of detrimental ``tramp" elements. Here is but one indication of the thorough, . scientific procedures that assure reliability h every Ladish Controlled Quality fitting.