Document Yr21wG1LK2Kvep6zw4bpe1J9E

$0 11: il .1 > iilili PRINCIPAL NEW POWER-PLANT EQUIPMENT . ms fu, twt Mansfield Tire & Rubber Co, Mansfield, Ohio '[rfrffrPTT^ L\ 1'$sL3f` i ^TM '* frlJ TM y'!i| NEW STEAM GENERATOR designed for 475 ps| needed ' PROCESS NEEOS vary widely In o heovy industrial plant, n- extro process copocity; will permit future ponerotlon oi power qulring thoi power plont furnish ample steam, olr ond water 7^ MANSFIELD TIRE OSNERATORS AND AUXILIARIES: tO,000-lb p hr............................. .Hcnrr Voft M*ehln Co p*r^,*,n- ktf-Bi#d. cindtr rtturo `V*, ................. .............................. .......................... Brr Co Wtlb Urrp. **P*^lT..........................................................B*umoni-Blreb Co . tO*. *>" **7t..n....................................................................................................................U....aBii**dutnCoosn<*B,oitrchCoCrpo [ CMilBUBUi-bl^Oown irittm ........................Henry V|t Hochlao Co .................................. Vcmatl-Warlng Co >*,galttg_*_>**>*... ....Mooning, Mia*|l A Moor*. Inc Crana Co yr'wHitT.itut liUin*i. *nd wator calumna......................Rallonco Qaogo Colama Co 'coBbuaitan canttol and flowmotora................Republic Flow Mr Co Ihttiuira gagaa....................................... Manning, M*w*ll A Moora, Inc ^Jrtkm!I."tfoveUng grata. 8tow ___ ....W H NUholion Co, (ne ..........Johnston A jcnnlnga Co }: Clodar-talojanioa agatam................. ...............United Coavapor Corp to*crfha-alr lao. I............................... ...................... .Ctaraga Pan Co lapplita o*r#ra-air ciotalaa & fertmi arch, *u*psadd.. 4v prit4-Ar*ll-fn, dost drlvo.. ft`P-4 fan totklao........... ......... it' P^ laa toepllajl, t................ A-P^ motor, I. 11 bp........... & Cklmnsr, ................................... p. M || hl(h. S-it lop 41a .Lacledo Chrlctp Clep Prodocti Co .............................Clarago Pan Co .............. .....................Elliott Co ............................................. Ralston Co ...................... Oaneral Blscnic Co ................. Ruat BnglMorlag Corp ) WATER-TREATMENT SYSTEM AND AUXILIARIES: ;D*r*t#f, n, 111,000 lb par hr.'................................. Coct s latiapar. I, lima sod*........ ....................... ............................Cock t` Hoi proetsa, tM.OOO lb par hr &'Cksmk*l la4 pump........ ................... .'Ckttskal consultants................................... `;'Htun AND COMPRESSORS: I Mkr Irod. I........ Datlv'ar 140 fpm 1 tn|roU-R*ad Co BolUf/wd turblnt, til hp, 1600 rpm.................................... SUIott Co Water regulator, I.......................................... Northern equipment Co Condenaata-raturn pumpa............................................C A Dunham Co ..................................................................................................... Crano Co Plpo eooeriag............................................................Jobne-MeorllU Co Comproaaora. two. 100 pal.....................................Burp Comptaaaor Co I at 1660 elm, l at |CM elm. moter-dtlvta Compreaaert, three. 100 pal.......................................Ingaraoll-Raad Co I ot 460 elm, | at 000 dm, iDotct-drloca Cocnpreior,,onel 100 pal............................. Sulllraa DU, Jog Mlg Co TSS elm, reatordriven Compretaora, two, XSO pal....... ................................lugeraoll-Raad Co I at era efta. I at 2U dm Comprataor motor*. 0 ( 1 t............................... Iddeal BUttrlc Mlg *..................................O1 aneral BltttrU Co Co C I................................. WWaaaatlnghouao Elec Corp Compressor controls...................................... f Cutler-Hammer Inc I Clark Controller Co 1 CIRCULATINQ-WATBR SYSTEM: Pomps. two, 1S5*(i haa4............................... t al 1ZM tpat, 1 at ISOS fpm ...Maoists* Co Pump, eoa, llJ-ft bead, motor-drive, 1T00 gpra...........tntaraoll-Rsnd Co Pump, aa. ISMt baa4. tnolor-4rivo. 600 fpm........................ Manlatoo Co Pump. 00a. IS 1 -fa head, turblno-drivo. SS00 |po................ Pradarlcba Co Tufblna^tlva, I................................................................. Murray Iroa Worki ft............................................................Caoarat Elaclrle Co Pump motor* 4 1.......................... .......................... Idal Electric Mt| Co Ll.................................................. Witlo|houa* Bite Corp Hpdraulle pump, oao. ISO p*l.................................... Daan Brea Pump Co Duplea, ouuldo packini, H1I1II Hydraulic pomp, 000, ISO pal..........................................Warrto Pump Co DupUs, eutaida packla|, I4iiy|ili ( oao, ICxtHatl............ Wortblattea Pump Hydraulic pumpo, IIH pal V ooa, IdaSail.......... Doaa Brea Pump) Jac ^iwo ItilKtall................ Worrta Pump Co Haat aachancar, l....................................................Hanry Vogt Macbloo Co Pillar, circulatlag waur......................................................... Bagrg Corp Clreulatlog-watar maiart............................................Brown luatruiaont Co Even though the vital rubber industry had its plant-production angle! sloping from front to back. CotK-^ slant travel of the grate gives con-'-fr?' capacity increased wherever possible throughout the past war, tinuous ash discharge. Air for coa-^; .tired fuel-bed thickness. As the coal valve (3) a 246-bp turbine-driven cir Process Water. Water needs for it still falls short of demand. Here's a prominent Ohio tire concern that is revamping power facilities for higher output POWER-VLAXT Si ItVICKS ul a liremanufacturing concern like the Mans field Tire end Rubber Co, Mansfield, Ohio, include steam, water, air and electricity. Mansfield does not, how ever, generate its own electrical energy. But plant pruceas needs keep growing and as one step in keeping ahead of ibis growth n new 90,000-lb-per-hr steam generator hot'been installed.- It is de signed for 475-psi operation although at present it develops steam at process pressure, 185 psi. Pressure Selection. The selection nl a higher pressure design was prompted by the feet thot a turbine-generator unit to opereie from design pressure, 47S psi, ond exhaust to one of the process pressure levels, 185, 125 or 6 psi, could be pul in at some later dale without uffecting boiler-room operation. This move plus the addition o( 0 pressurereducing station could increase the serv ices from the power plant and yet in- sure adequate quantities of process steam no matter how the electrical cn- ergy demands would vary. This 90,000-lb-per-hr unit is of 5-drum, hent-tube design employing wuterwalls and convection surfaces in its circulating system. A series of wstcrwoll tubes run along the furnace sides at the grate level to provide the necessary cooling in this area for re ducing eftnkering. There is 00 super* heater si present but space h&s been provided for loter installation. Incoming feedwater for the new boiler enters the upper rear drum (see above cross section) from which it passes to the boiler circulating system. This same drum contoins various en trainment baffles for removing moisture in steam before it enters the plant dis tribution system. Stoker. A compensating-feed stoker fires (he new boiler. The entire stoker assembly sets in the furnace at on bustion passes through openings in ike piogresses it spills over on the station- grate area and meets with a stream of^- jD,' try elements which tends to alow up secondary overfire air introduced below ^\g I foel-bed movement and build up e the ignition arch by a blower noale., This meeting of air streams lxsulnifc'3 compression force. When cracks and bsuree develop this compression re- from different directions helps produee-lrv litres itself by dumping cool Into the an overfire rolling and turbulent ... n. a > open areas from the slower moving fuel piled up on the stationary grate. of the furnace end farther back on tlwy grate travel, is the cinder-relfljecllon It Fumoce setting for this type of stoker ^differs somewhat from the usual long nozzle. It admits into the furnace srtfjvvr ^'b*htnglng rear arch and narrow all collected siftings from the itoker.'A; throat (see boiler cross section). The and cinders from the bottom.of ipuilon arch, however, is retained. It first pass. t&VK Compensating' Feed. The stoker bed f^-J itself is of the compensating-feed * , Prvide the necessary hest-storoge area w promoting early ignition. *- . .,,,w Cytl#. The steam output from sign. Grate surface is made op d '* , ^p.W-lb-per-hr unit joins that pro- lemately moving and stationary I** iced by three older boilers, one with tions thot run the full length of >: ^fldple-retort underfeed stoker and stoker. The moving pen occupies ^4^. - AU *?.***' ,lker-fired units in battery. greeter area. Over the grote surface st^,-^ the rear of the furnace are cover pl,,ei These plates (1) retard a*h fl*w ty;?' r>t enters a 185-psl satu- * header. A new turbine75^1 ^*lcr fecd pump designed for give a good clean grate surface lot :L moving elements passing under th* ers (2) effect a light rear-end dra 'v seal. .'f^. Coal entering the furnices corner ^ mon the moving grate sections #0^ JJ levelled off by a feed gate to the 1%a throttle is now operating ' tsk ,le*ni. The only other . ron' this header is a 6 in. re- 15*Wl*. 125 psi. that delivers steam at header supplies steam L` 0)J process (2) a 4 In. reducing culating-water pump (4) three eteam. driven boosier air compressor! (S) three low-pressure hydraulic pumps (6) three bigh-pressure hydraulic pumps. AU steam except that going to process goes to 6-psi header. This last-named header ties into the pldnt spaceheoting system. A small amount of il is used for two 50-gpm heaters supplying water for showerroom' purposes. In addition, steim for the hot-process water softener and the deaerator comes from this 6-psi supply. Woter Cycle. All water for process and steam makeup comes from city water maias. It entera a hot lime-soda water softener of 100,000-lb-pcr-hr ca pacity. From here it continues to a 125,000-lb-pcr-hr deaerating feedwater heater. At this point it joins with all condensate returns to enter the boilerwater cycle. Boiler-feed pumps, both lurbine-driven and motor-driven, deliver water to the boilers. A proportioning chemical-feed pump supplies treatment chemicals to the drums. The new unit has o continuous blowdown system lor keeping boiler water concentration within allowable limits. The older units era given periodic blowdowns. process are considerable. Control and delivery of this water impose a heavy burden on power-plant operation. One such process-water service ehows on the flow diagram, p 110. Water leaving the hot lime-soda water softener goes through a makeup pump into a closed process-water cycle. This water, at 280 psi, entera two 65-gpm circuloting-waler pumps, it then posses through a filler, at 310 psi, Into 0 pair of heat 1 exchangers, parallel-connected. Pres sure drop through these heaters amounts 10 about 10 pal. ^Pater at 500 psi enters a process-water header for service. Discharge water collects in 0 storage -tank. A liquid makeup pump holds atnrege al a fixed level by return ing excess woter to the cycle at 280 psi for recirculation. In much the same way plant demands for considerable quantities of com pressed air are made 0 part of power.plont operation. A battery of compres sors detailed in the equipment table above shows the extent of this air serv ice. There ore two main pressure levels --250 and 100 pel--ot which com pressed air is delivered throughout the plant for various uses. 110 (622) POWER Oclobe* K*Lvv e * * October 1948 (623) III ` :