濕電自動計算

濕電除塵設(shè)計計算,,,,,,,,

序號,項目名稱,單位,符號,計算式,提供數(shù)值,計算結(jié)果,取值,備注

1,煙氣量（標況）,Nm3/h,Q,,8000,,,

2,煙氣入口溫度,oC,,,200,,,

3,粉塵平均半徑,m,,,8.00E-06,,,

4,粉塵入口含量（標況）,g/m3,C1,,10,,,

5,粉塵出口含量（標況）,g/m3,C0,,0.1,,,

6,除塵效率,%,η,η=（1-C0/C1）*100%,,0.99,,

7,工況壓力,Pa,P0,,300000,,,

8,當?shù)卮髿鈮?,P1,,99300,,,745mmHg

9,漏氣率,%,,,5,,,

,電暈線半徑,cm,Ra,,0.1,,,一般取電暈線直徑為0.15-0.25cm

,電暈極與集塵極之間的距離,cm,b,,16,0.16,,

,相鄰電暈極端點距離,cm,,,32.5,,,

10,臨界電場強度,V/cm,E0,E0=（31.02*ρ+9.54（sqrtρ/Ra））*103,,43.1,,

11,氣體密度因子,,ρ,T0P/TP0,,0.622,,

12,臨界電壓,,u0,u0=Ra*E0*Ln(d/Ra),,22.82,,d為換算常數(shù)，

13,i,mA/m,i,i=K/【f0b2Ln(d/Ra)】*u*(u-u0),,0.12,,"K為當溫度為toC,壓力為101325Pa時的離子遷移率cm2/(v.s),取空氣的離子遷移率為2.1cm2/(v.s).f0換算常數(shù)，取9x106,u為實際操作電壓，單位Kv一般為40-70Kv，取其為40Kv"

14,電暈場強度,Kv/cm,ER,ER=u/b,,2.5,,b為電暈極與集塵極之間的距離，cm

15,集塵極附近的電場強度,Kv/m,EP,EP=sqrt（4ibf0/KC）,,1.41,,"c為電暈極線間距的一半,cm.f0換算常數(shù)，取9x106,"

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

17,驅(qū)進速度,cm/s,ω,ω=D*ER*EP*r/(6*3.14*μ),,0.005555807,,r為塵粒半徑8x10-6

,,,D,D=1+2*(ε-1)/(ε+2),,1,,氣體ε=1

18,集塵極比表面積,s/m,f',f'=(1/(1-η))/ω,,828.8931257,,

19,集塵極板總面積,m2,A0,A0=f*Q,,1841.984724,,

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

21,實際集塵極比表面積,s/m,f,f=f'*A/A0,,1243.339689,,

22,除塵效率驗算,,η',η'=1-e-fω,,,,

23,有效截面積,m2,F,F=Q/V,,3.17,,管式除塵器，V為氣體速度，V=0.6~1m/s，取0.7m/s

24,集塵極數(shù)量,根,n,n=F/S1,,47.73,43,考慮到壁厚，取43

25,單根截面積,m2,S1,S1=3*b2*sqrt（3）/2,,0.067,,集塵極設(shè)定為六邊形

26,集塵極有效高度,m,h,h=A/(2*n*3.14*b),,74.61,,

27,氣體在除塵器內(nèi)實際速度,m/s,V’