Document qdMzLoaQj5a6nOk12YK5RvBgk

More PLANT PROBLEMS. Seturia* ^ ,-/VcWa> Wf FIND Injection ol phosphates help* ful in reducing the effect* of corrosion and high iron content in well water. Sketch shows how we hook up the treat ment system. Phosphate is injected directly into the well casing, after the solution is pre pared in the tanks. One tank is for standby service. For treatment of our water we use 9.6 lb of phosphate per day. Water flow is 200 gpm. One batch of phosphate solution lasts about 50 days. Johh Constance divide Park, fi/. J. PHOSPHATE COMPOUNDS effectively stabilise well water, eliminating scale deposlta and corrosive attack. Aa these crystals dissolve, a thin glass-like pro tective film deposits lu protect the metal.. Use an earthenware crock and stain less-steel bosket to hold the phosphate while it is dissolving. Dosage, best fed with a pump, will vary with water de mand but will average 2 to 3 ppm. Start treatment at 10 ppm, leaving system drains open until phosphite tests in all parto of the system. Use a high-test hypochlorite because phosphate is food for bacterial growth. Use a water filter to eliminate rust, or ganic matter, discoloration and bad odors. Phosphate reacts with compact'hard scales to soften them so they crumble, loosening them from metal surfaces. Scale-removal rate increases with tem perature and water velocity- Periodie oeid cleaning more then repoys its cost. A typical heat exchanger cleaned with acid, by landblaating and plugs and brushes, will have a far higher efficiency after acid cleaning than when any other method is used. E W Fitzpatrick /efferson City, Mo. INSTAll a continuous-treatment system, if possible. It will keep water in the right condition st all times during the year at low cost ami with Utile troub1& I've found this method extellont for \ similar job in my plant. ,V; M B Siv.mt3Aw Neu> York, N.Y < 'l WE FIND that continuous treatment better than Intermittent acid cleanlai: because we can keep our heat enhang/ era in aervice at all times. This nTtJ- muoh production lime and eliminates week-end labor crews we might hsvi use with intermittent cleaning. The big factor to be considered in ujii cleaning job is how long the units will be out of service and whot this meaat. in dollars and cents. Of course, ihtre, are some units that are better cleaned / with acid than by continuoua feeding off- chemicals- Much depends on the icaltlV encountered. IR I'd hove a chemist onalyr.e the waterf? supply and go olong with his tecoro-^" mendations for treatment. The results obtained should be apparent widils V month or so because heat-exchenger-1 efficiency con readily be checked aa the job. Be sure you have thermometers ea exchanger Inlet and outlet bo you see exactly how the unit is performing William Stskn New York, N. Y. TOUR TWO NEW PROBUMS TOR NOVEMBER Question No. 1 Our large induairlal plant pro duce* typewriter*. T# bay oar electricity, but i week ago there wai o power failure that eaused u* plenty of trouble. Hioagh this I* the only one we've bad so far, we'd like to be ready for the next* if It eomei. What's Best Unit for Emergency Power? We figure that a 100-kw gaso line, diesel or steam-turbine anil would solve our problem. Areas and aolts needing juice ares light* (exit*, aide*, eta), prinkfer supply air, elevator, hoapllal, stokers, floodlights, fire alarm, auto-call system and af- cterio refrigeration units, fans. Which drive would be best? How should we conneet emer gency unit into the system? Are there aoy other uses for emer gency acts? What fa the bast type of control to Insure good emergency power always?--FT . Question No. 2: What Causes Stack Carbon in Our Plant? We burn No. 6 oil under our two hrl boiler* (erring a vorniih and insulator factory. Boiler* are in excellent condition and are reg ularly inspected. However, we get many com plaint! from neighbor* in the area about eatbon flake* from our stack settling on their buildlags and equipment. Oar local smoke Inspector hu been . tn several times, will take action. We'v checked the boilers completely, ineluding draft, CO, and stack temperature. All read ings are OK, pointing to good combustion. Whot canoes this carbon to form? Uow can we reduee It? Is it possible to eliminate ll en tirely?--IfIF Don't miss next month's two problems. Another chance to use your ingenuity Will you help readers who sent us problems? Extra pay for photos or sketches. 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For all pressure/temperature ranges from vacuum to 10,000 lbs., from extreme sub-zero to 2000* F. For all standard joint assemblies. In four thicknesses for special requirements: .125', .175', .250', .285'. With Teflon filler for corrosive chemical conditions. Write us your requirements . .. Flexitallic Gasket Company, fith ft Bailey Streets, Camden 2, New Jersey. Representotive^Jji'prinelpal cities. Consult classified telephone directory. pjUUVERSARt / SPIRAL-WOUND CASKETS "flanobs, pressure vessels and process equipment N*t ll |iAvi r* PlicUillu. Utli Ur tk bmi PL&XtTALLlC let* lit anil tplrtl el mry <*miat Ft*>lilli C*kl b#*k 1*r FittUtllU B'm* -- li't or t(tUti*t 1*r^y*4 CaasdU* ih**t<* SlH*. ns