循环冷却水系统的浓缩倍数与补充水量、排污水量的关系
…………………………………………………………最…新资料荐推…………………………………………………循环却水冷统的系浓倍数缩补充水量与排、污水的量系关太原铁(集钢团)公司陶其鸿1、浓倍缩的定数在敞义式开循环冷却系水中统,于由发蒸,统中的水会系来越越少而,中水各矿物质种和子离量含会就越越浓来为。使了中水含盐量持在维定一浓度的,须必补新鲜水,排充浓出水缩。通常操在时用作浓倍数缩来制水中含控盐的浓。度环循冷水的却缩倍数是该循浓冷却水环的含量与其盐充补水的含盐量之(用K比表)示即,:K=C/CMR式C中—R循环—水某物中质浓度;的M—C—补水中充某物质浓度的2。浓缩倍数、补充与量水排污、水的关系量提高循环冷水系却浓统倍数缩可以降补充低的水用量从而,节约资源;还可以水低排污水降,量从减少对环境而的染污废水的处理和。量假设循环却冷水统的循系水环R量10为00m30/,h冷塔进却出温口10差℃则不,的浓同缩数倍K与补水充M、排量水污量的关系如下表B:浓缩数与补充倍水量排污、量水关的系K循值环量水Rm3/h()10.直流()水1.51000010000.020001030.100004.0100005.000010010.100010/13/3/1………3…………………………………………………最…新资推荐…料………………………………………………蒸发量E(水m3h)/0/E(R)0排污%水量(Bm/h3)10000B/R(%)—补充量水(M3m/h)10000补充量水占循环水的量100分百比/R(M%)147.1473493.4953522.741.1417471.74438.351741.784078.7261261.471.754805.8232.327411.7444.4420812.2174.1417901.91931.9从上表可以看,出着循随冷环却水浓缩倍K数增加的,循冷环水系却统的充水补M量和污排量B水都断减少不。但,过是地多提高缩浓倍数,使会环循水中硬度的碱、和度度升浊太得高水的结,垢向增倾很大。还多会水使腐蚀的性离的含量子加增水的腐蚀,性增强。因,冷此却水浓缩的倍数不是并越高越,通好常一控制般在20~..40右。左国发改委组家编织的“写中节国水术技大纲提”出“:在开敞循环式却冷系统水推广,缩倍浓数大于40.的处理水运技术行20;60年淘浓汰缩数倍于小30.的水理运处技术行。3、”青钢岛有铁限司部公工序净分水环统现状耗系水量、新排污水、量发蒸量和水浓倍数缩K=4时净环系统现状耗水水量、排新污量水蒸发、量水(3mh/)序工状循现水环蒸发量水E量(E/R%R)污水排B补充量量水M(BR/)%(/MR%浓缩倍)数K4=.0理论时值节水循环水蒸发水量E排污量B水充补水量
M量/th量RE(/)R(BR)(//MR炼铁)5406011(.17948(0.8))5194(2.4)6564011(017.)28(9.05)12(2.92)920炼钢41027(4.810)48(204.)581(38.4)4102741(.8)210(0.15)95(2.31)63材线24885(1179.)6(1.06)6752(.53)842851(17.)94(0.49)1652(28)2.小型842151.78)(1(0119.)252(97)8.241(51.8)740(4.819(2).626)气氧20443(7.118)0(0.41)947(2.032044)371.81()10(0.4)49(7.302)04综、述敞对开循式环冷水却统系蒸发量水占约环水循的量.1-178%.;浓缩倍在数=K时,4排水量约污占循环量水的.5%,0新水补充量约占循环量的2水2-2..%3。2/32/32/3…………………………………………………………最…新资推料……荐……………………………………………环循冷却水系蒸统发量和空水的干气温球度()T进与出温口差(tΔ)关的系按经公式E验(=0.+01002T.·)Δt%·R算E为计发蒸水量m3(h),/R循为环水(量3m/)h%T-15-10-50501150225303540△t10070.0.0.89001.001.011.20.13014.0.51.1600.71.10820.41016.0.180.200.220.420.20.680.2300.32034..3603021.0.420.20.300.733.360.0309.40.4250.480.15.0544.02803.02.360.400.440.84052.05.60.6006.4.0860.0750.350.40.04505.005.5.60006.0.570.7050.0808.509.60.4020.48.500.6400.66.072.780.804.900.9610.01.280704.9.0560.360.070.77.048.019.098105..112.191.26180.650.6407.2.800.800.9618.04.121.2011.821.36.1490.634.020.8170.090.991.801.71126..1351.4145.31.6210070.0.080.091.001.01.121.0301.41050..611.0071.08110.77.80089.1910.1.211.31243.1.451651.7.6.17189.1820.804.96.081120.1.321.41.4516.681.801.229.42.061130.911.401.1713.0.134.165.169.181.952.0822.12.23144.980.1211.26.41015.4.1618.28.916.2102.22.432.58251.15102.01.51.35016.51.801.529.02.1252.402.552.07/333/33/3