湿电自动计算

湿电除尘设计计算,,,,,,,,

序号,项目名称,单位,符号,计算式,提供数值,计算结果,取值,备注

1,烟气量（标况）,Nm3/h,Q,,8000,,,

2,烟气入口温度,ºC,,,200,,,

3,粉尘平均半径,m,,,8.00E-06,,,

4,粉尘入口含量（标况）,g/m3,C1,,10,,,

5,粉尘出口含量（标况）,g/m3,C0,,0.1,,,

6,除尘效率,%,η,η=（1-C0/C1）*100%,,0.99,,

7,工况压力,Pa,P0,,300000,,,

8,当地大气压,,P1,,99300,,,745mmHg

9,漏气率,%,,,5,,,

,电晕线半径,cm,Ra,,0.1,,,一般取电晕线直径为0.15-0.25cm

,电晕极与集尘极之间的距离,cm,b,,16,0.16,,

,相邻电晕极端点距离,cm,,,32.5,,,

10,临界电场强度,V/cm,E0,E0=（31.02*ρ+9.54（sqrtρ/Ra））*103,,43.1,,

11,气体密度因子,,ρ,T0P/TP0,,0.622,,

12,临界电压,,u0,u0=Ra*E0*Ln(d/Ra),,22.82,,d为换算常数，

13,i,mA/m,i,i=K/【f0b2Ln(d/Ra)】*u*(u-u0),,0.12,,"K为当温度为toC,压力为101325Pa时的离子迁移率cm2/(v.s),取空气的离子迁移率为2.1cm2/(v.s).f0换算常数，取9x106,u为实际操作电压，单位Kv一般为40-70Kv，取其为40Kv"

14,电晕场强度,Kv/cm,ER,ER=u/b,,2.5,,b为电晕极与集尘极之间的距离，cm

15,集尘极附近的电场强度,Kv/m,EP,EP=sqrt（4ibf0/KC）,,1.41,,"c为电晕极线间距的一半,cm.f0换算常数，取9x106,"

16,,,μ,μ=μ0*(273+C)/(T+C)*(T/273)3/2,,0.0002699,,

17,驱进速度,cm/s,ω,ω=D*ER*EP*r/(6*3.14*μ),,0.005555807,,r为尘粒半径8x10-6

,,,D,D=1+2*(ε-1)/(ε+2),,1,,气体ε=1

18,集尘极比表面积,s/m,f',f'=(1/(1-η))/ω,,828.8931257,,

19,集尘极板总面积,m2,A0,A0=f*Q,,1841.984724,,

20,,m2,A,A=(1.5~2.0)*A0,,2762.977086,3223.473267,3683.969448

21,实际集尘极比表面积,s/m,f,f=f'*A/A0,,1243.339689,,

22,除尘效率验算,,η',η'=1-e-fω,,,,

23,有效截面积,m2,F,F=Q/V,,3.17,,管式除尘器，V为气体速度，V=0.6~1m/s，取0.7m/s

24,集尘极数量,根,n,n=F/S1,,47.73,43,考虑到壁厚，取43

25,单根截面积,m2,S1,S1=3*b2*sqrt（3）/2,,0.067,,集尘极设定为六边形

26,集尘极有效高度,m,h,h=A/(2*n*3.14*b),,74.61,,

27,气体在除尘器内实际速度,m/s,V’