Document x5LLbBG99JVm4QYBDqev5wBaG

' >it/p( pi: Iffst#jt& (ft t'". V ^MiMmethods . .... bust 'collection FgaoVtili'/holdlta ltrong .app9o) over Iks ontlro ronji' Oust. .collectori,^,or.. provision. ;far Jciter V Installation If ' S^Vki;r..' bft.n^iir.vtd. for ..N ..* .h, fools ' availabilitiesl'change,;form' port of .monjr.modomfsortbn p BflarSw^kalti' Industry Modernizes Steam Plant! -TABLE I-PRESSURE DIVISIONS- d Cnl Oil Wstfs STOKER Oil PULVtRinO COAL 6AS 0*s and Oil and Css fl* IIndustrial plants are entering a period characterized by (I) a shift from de fense to civilian production (?) em phasis on modernization of existing plants rather than on expansion. These trends showed up clearly in the sixth annual survey of industry's plan* for capital spending by McGraw-Hill Dept of Economics. And the effects of these trends are reflected in the steam-plant installation data reported here and on the following pages. With most controls off and avail ability of materials and equipment no great problem, industry it making its modernization plans in on orderly /oshion. There isn't much evidence of placing orders in a rush just to get them on the books and there teems to be more of a tendency to shop around than at any time since World War II. Fuel* and Firing. The Atlantic Sea board from the southeast to New Eng land has been a major battleground where comparative fuel advantages are fought over at virtually every price change. The ready avoilabllity of oil for the past year or more has unques- ITibhi I and II n (acini Ml*, and prruurc, capacity iad ll/Pn|.mrtbod thifli above aia bawd on known order* lor ihe ivrvey petted. Doit-oolltcto* chart h derived from Information from *eportin plant*, lahalatcd an tha (ollovtn paea. tionably ployed a strong part in the decisions on firing methods revealed in the Arlng-methods chart above. Once natural get becomes available in an area, it makes its pretence felt and gains its share of the fuels market. Continued extension of pipelines jumped natural gas use 19.5% in 1953. Coal remains the dominant steamplant fuel, however, fn larger installa tions, original design frequently calls for pulverlzed-coal facilities even if the immediate fuel choice is oil or nat ural gas. Such o move gives the plant' operators (1) insurance ogainti shut down caused by shortage of one type of fuel (7) full freedom to take advan tage of any price shifts. Spreader stokers continue to exert strong oppeal not only for economic reasons but for their proved ability to burn a wide range of fuels. This makes them particularly attractive for han dling byproduct fuels and waste mate rials. Studies now underwoy promise to extend the spreader's fuel versatility even further. Pollution Problems, m last year's sur- vey (Power, March 1953) the twin problems of stream and air pollution were singled out as elements in the se lection of power-plant equipment. This year. Industry reports show smoke 'tmun. 1050 1931 1933 1950 1951 1933)930 1931 1933 1950 195) 1932 1950 1951 1952 1930 1851 1152 1951 1852 prevention, dust collection and and*, disposal as deAnite factors in modti&jj [CtW.W below 196 306 261 138 340 263 ization. Por example, the oncc-balY ineincerator is rapidly becoming*^ IaJCOJN 9 8 6 37 64 13 17 20 23 14 10 8 M _ - 18 26 -212 4 4 23 12 1 6 U 21 member of the steam-producing trim/ ;.gw 7 19 18 2 A8 1 10 13 3 even if its output goes only to best , KO end above 3 3 3-1* service water. In large plants, incintrsj^ tom supply a respectable part of pLuttvj steam needs in addition to handling tft; necessary waste-disposal fork. -TABLE II-CAPACITY DIVISIONS- Efforts to solve stream pollution sin. other waste-disposal problems reijw, bring some new fuels into the picture^* STOKER Cosi. oil 0U. PULVERI2E0 COAL GAS 1931 1952 Gas and 'Oil 1930 1951 1952 tnd'Cst foils 1950 1951 1952 1931 1932 sulphite liquor, for example. Tboijj would take their place alongside eittVp'j lished byproduct and waste furl* *^4 j as blast-furnace gas in the steel milhjj black liquor in kraft-pulp milti, bstjg gasse in sugar mills. Rising use of wdj$ 144 103 114 119 316 238 0 1 - 23 42 70 35 37 46 43 0 - - 16 43 34 63 26 17 24 0 7 2 10 4 17 43 1 10 7 3 7 9 0 43 33 3 12 10 10 38 23 2 77 20 15 5 29 43 19 13 7 31 55 5 5 4 7 86 25 25 17 32 93 46 40 7 40 0 0 0 0 4 0 2 7 17 0-- 4 14 1-- 0 3 1 3 6 10 3 14 34 22 fuels shows In firing chart /S Dust Collectors. Disposing of wafhtyl and byproducts by burning oltea lawj volves use of dust collectors. But bi|*yj gest factor affecting their instslUti*1.'^ is the continuing strong pressure to f*-' Industrial boilers, as in past Power duce atmospheric pollution. Some locsj^i ; . wrvtyj, foils In the lower pressure ordinances make it absolutely ^J^W-299 pt{ and below. The reason to install dust collectors with erring: { Routes essentially the same: majority solid-fuel firing equipment Obviouilft ji J boilers going into industrial and such a requirement may also w4^ hc *n*tihitional Plants serve heating or choice of liquid or gaseous fuel witho^L .V.TToceu loads. o dust-collector installation. Prasswrs Divisions. Oreatest nuasbd^ industrial pressure levels are ris"ig. In this survey. Ihe 299-psi-and-be- tow class outnumbers higher pressure units by two-to-one. In previous sur- veys.thls ratio was nearer three-to-one. The trend among industrials for elec tric-power demand to increase at o faster rate than heat load still contin ues. In larger plants, this prompts modernization by installing high-press ure high-tcmperoture steam generators supplying topping turbine-generators. Capacity Range. ]n last year's survey, industry's new high-capacity steamgenerating units (100.000 1b per hr and more) outproduced the numerically larger groups in the 30,000-lb-per-hrand-bclow class.This is again true, and as the modernization swing becomes more pronounced the trend will grow. MOOERN RIANT JUZVIY rovii ^''A4lt7EMeE 1933 MODtRN RIANT SURVEY