压煮溶出热平衡计算Word文档格式.docx
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压煮溶出热平衡计算Word文档格式.docx
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80℃时r=1310.3kg/M3
V=1M3
4、矿浆浓度95℃矿浆经套管及预热压煮器预热到210℃
5、溶出浓度:
260℃溶出时间2小时
6、新蒸汽浓度
300℃压力:
6.0MPa
7、洗出配料ak=1.45(Rp=1.134)
8、洗出机组进料400M3/组
或450M3/组
二、溶出物料平衡
1、生产1TAI2O3产品进入溶出的物料
矿石(湿矿石):
2493.4kg石灰154kg
循环母液:
8.7643M3
合计重量为:
G=2493.4+154+87643×
1310.3=14131.26kg
料浆体积V=2493.4×
1/(1+0.13)÷
3000+154/2800+8.7643+2493.4×
0.13/(1+0.13)/1000=9.8214M3、
γ=1438.82g/l
2、一组溶出进料组成:
矿石进水:
89775.14×
13%=11670.77kg
(1)400M3/组H:
进干矿石:
89865kg×
99.9%=89775.14kg
进石灰:
6290.01×
99.9%=6283.22kg
进循环母液:
467705.67×
0.999=467237.97kg
合计:
G=89775.14+6283.72+467237.97=574967.6kg
(2)450M3/组H:
H2O=100999.24×
13%=13129.9kg
2493.4×
450/9.8214÷
1/1.13×
99.9%=100999.24kg
154×
450/918214×
0.999=2048.96kg
8.7643×
1310.3×
450/9.8214×
0.999=525645.05kg
G=100999.24+7048.96+525645.05=646823.15kg
三、溶出加热蒸汽计算
1、深出物料的热蒸汽取值为:
铝土矿:
0.23kk/kg℃
石灰:
0.19kk/kg℃
赤泥:
0.25kk/kg℃
循环母液(铝酸钠溶液)不沸浓度取为0.85kk/kg℃
2、溶出系统热损失均取为1%
3、三水铝石和一小颗铝石的混合矿的AI2O3溶出热取130kk/kg
4、将矿浆预热温度210℃加热到260℃时需用的蒸汽量:
6.0MPa,热蒸汽热焓i,,=688.2,300℃时冷凝水热焓i,,=312.6+1/8.3×
6.4=313.35
(1)400M3/组H进料时a1=(Q1+Q2)÷
0.99/i,,-i,,
=[(89775.14×
0.23+6283.72×
0.19+428908.74×
0.85)×
(260-210)+89775.14×
54.43%×
85.9%×
130]÷
0.99/688.2-313.35=[21445730.9+5456710.85]÷
0.99÷
374.85=72493kg=72.493T
(2)450M3/组H进料时a1=(Q1+Q2)÷
=[(100999.24×
0.23+7048.96×
0.19+525645.05×
(260-210)+100999.24×
0.99/688.2-313.35=
[24126391.76+6138933.89]÷
374.85=81555=81.555T
四、闪蒸器蒸水计算
1、末级保温罐压煮器出料温度为255℃,各级闪蒸器温度控制为:
一闪:
245℃
二闪:
235℃
三闪:
224℃
四闪:
213℃
五闪:
201℃
六闪:
188℃
七闪:
175℃
八闪:
161℃
九闪:
146℃
十闪:
126℃
2、末级保温压煮器中
(1)400M3/H进料溶出液为:
536205.53kg溶出赤泥为:
38760.15kg
(2)450M3/H进料溶出液为:
603231.22kg溶出赤泥为:
43605.17kg
3、各级闪蒸蒸水情况(热损失均取1%)
(1)一闪:
a400M3/H)Q=(536205.53×
0.85+38760.15×
0.25)×
(255-245)=4654647.38KK
Gm1c=Q×
i=4654647.38×
[418.8-(418.8-409.3)/(249.2-241.2)×
(250-241.4)]=4608100.91÷
414.42=11120kg=11.120T
b450M3/H)Q=(603231.22×
0.85+43605.17×
(255-245)=5236478.30kk
i=5236478.30×
414.42=12509kg=12.509T
(2)二闪:
a400M3/H)Q=[(536205.53-11120)×
0.25]×
(245-235)=(525085.53×
0.85+9690.04)×
10=4560127.38
gm2c=4560127.38×
[428.9-(428.9-418.8)/(241.4-232.8)(235-232.8)]=4560127.38×
426.3163=10590kg=10.590T
b450M3/H)Q=[(605231.22-125097×
(245-235)=(592722.22×
0.85+10901.29)×
10=5147151.80
gm2c=5147151.795×
426.3163=11953kg=11.953T
(3)三闪
a400M3/H)Q=[(525085.53-10590)×
(235-224)=(514495.53×
11=4917123.65
gm3c=4917123.65×
[439.8-(439.8-437.5)/(225-222.9)×
(224-222.9)]=4917123.65×
438.595=11099kg=11.099T
b450M3/H)Q=[(592722.22-11953)×
(235-224)=(580769.22×
11=5358452.55
gm3c=5358452.55×
438.595=12095kg=12.095T
(4)四闪
a400M3/H)
Q=[(514495.53-11099)×
(224-213)=(503396.53×
11=4813348.00
gm4c=4813348.00×
[451.9-(451.9-449.3)/(213.9-211.4)×
(213-211.4)]=4813348.00×
450.236=10584kg=10.584T
b450M3/H)
Q=[(580769.22-12095)×
(224-213)=(568674.22×
11=5437018.15
gm4c=5437018.147×
450.236=11955kg=11.955T
(5)五闪
a:
(400M3/H)
Q=[(503396.53-10584)×
(213-201)=(492812.53+9690.04)×
12=5142968.27
gm5c=5142968.27×
[462.7-(462.7-459.8)/(203.4-200.4)=5142968.27×
462.12=11018kg=11.018T
b:
(450M3/H)
Q=[(568674.22-11955)×
(213-201)=(556719.22×
12=5809351.524
gm4c=5809351.524×
462.12=12445kg=12.445T
(6)六闪
Q=[(492812.53-11018)×
(201-188)=(481794.53×
13=5449800.08
gm4c=5449800.08×
[475-(475-471.8)/(190.7-187.1)×
(188-187.1)]=5449800×
474.20=11378kg=1.378T
Q=[(556719.22-12445)×
(201-188)=(544274.22×
13=6155946.901
gm4c=6155946×
474.20=12852kg=12.852T
(7)七闪
Q=[(481794.53-11378)×
(188-175)=(470416.53×
13=5324073.18
gm7c=5324073.18×
[486-(486-484)/(176.4-174.5)×
(175-174.5)]=5324073.18×
485.565=10855kg=10.855T
Q=[(544274.22-12852)×
(188-175)=(531422.22×
13=6013932.301
gm7c=6013932.301×
485.565=12262kg=12.262T
(8)八闪
Q=[(470416.53-10855)×
(175-161)=(459561.53×
14=5604442.77
gm8c=5604442.77×
[499.2-(499.2-496.8)/(161.2-158.1)
=5604442.77×
496.955=11165kg=11.165T
Q=[(531422.22-12262)×
(175-161)=(519160.22×
11=6330624.678
gm4c=6330624.678×
496.955=12611kg=12.611T
(9)九闪
Q=[(459561.53-11165)×
(161-146)=(448396.53×
15=5862406.36
gm9c=5862406.36×
[510.5-(510.5-507.4)/(147.2-142.9)×
(146-142.9)]=5862406.36×
508.265=11419kg=11.419T
Q=[(519160.22-12611)×
(161-146)=(506549.22×
15=6622021.905
gm4c=6622021.905×
508.265=12898kg=12.898T
(10)十闪
Q=[(1448396.53-11419)×
(146-126)=(436977.53×
20=7622418.81
gm4c=7622418.81×
[522.7-(522.7-520.9)/(128.1-125.5)×
(126-125.5)]=7622418.81×
522.3535=14446kg=14.446T
Q=[(506549.22-12898)×
(146-126)=(493651.22×
20=8610096.54
gm4c=8610096.54×
522.3535=16318kg=16.318T
4、稀释槽蒸水计算
(1)稀释后槽出料温度为105℃,设稀释槽出料温度为110℃
(2)赤泥洗涤温度为90℃,量为:
a:
400M3/H进料308534kg
b:
450M3/H进料
347100.75
(3)稀释时蒸水计算:
400M3/H进料
设稀释时蒸水量为X
热收入1=(436977.53×
126=48021238.50
Q2=308534×
0.85×
90=23602851
热支出1,=[(436977.53+308534-X)×
0.85+9690.04]×
110=(643374.8405-0.85X)×
110=70771232.46-93.5X
蒸汽带走Q2,=[648.5+(649.4-648.5)/(128.1-125.5)×
(126-125.5)]×
X=648.67X
因为(Q1+Q2)×
0.99=Q1,+Q2
(48021238.50+23602851)×
0.99=70771232.46-93.5X+648.67X
所以X=246kg=0.246T
450m3/h进料
热收入:
Q1=(493651.22×
126=54243608.20
Q2=347100.75×
90=26629707.38
热支出1,=[(493651.22+347100.75-X)×
0.85+10901.29]×
110=79809450=93.5X
Q2,=648.67X
所以(54243608.20+2662970.38)×
0.99=79809452-93.5X+648.67
X=460kg=0.46T
五、各级预热器预热温度变化情况
1、Ra101进料温度为95℃,预热压煮器退出Ra108、Ra111闪蒸器退出NT108、NT111
2、预热器内热损失为1%
3、冷凝水罐产生二次蒸汽量:
(1)NP112二次蒸汽量:
a、400m3/h:
进Ra112压煮器闪蒸蒸汽温度245℃,是为11120kg,冷凝水温度为245℃,常进NP112的热量为Q:
Q=11120×
[249.3+(258.3-249.3)/(249.2-241.4)×
(245-241.4)]=11120×
253.45=2818364
NP112排出的冷凝水及产生的二次蒸汽带走的热量为Q,
Q,=[668.2-(668.2-668.1)/(241.4-232.8)(235-232.8)]×
X+[239.5+(249.3-239.5)/(241.4-232.8)(235-232.8)]×
(11120-X)=668.17X+242.06×
(11120-X)=2691707.2+426.11X
因为Q×
0.99=Q1:
所以2818364×
0.99=2691707.2+426.11X
X=231kg
450m3/h
Q=12509×
253.45=3170406.05
Q,=668.17x+242.06×
(12509-x)=3027928.54+426.11x
3170406.05×
0.99=3627928.54+426.11X
X=260kg
(2)NP110二次蒸汽量:
Q=(10590+231)×
[239.5+(249.3-239.5)/(241.4-232.8)(235-232.8)]+(11120-231)×
242.06=10821×
242.4+10889×
242.6=5266846
Q,=[(10821+10889)-x]×
[228.6+(230.9-228.6)/(225-222.9)×
(224-222.9)]+668.4X=(21710-X)×
229.8+668.4X=4988958+438.6X
所以5266846×
0.99=4988958+438.6X
X=513kg
Q=(11953+260)×
242。
6+(12509-260)×
242.6=12213×
242.6+12249×
242.6=5934481.2
Q,=[(12213+12249)-X]×
229.8+668.4X=(24462-X)×
229.8+668.4X=5621367.60+438.6X
0.99=Q,
所以534481.2=5621367.60+438.6X
X=731
(3)NP109二次蒸汽量:
Q=(11099+513)×
[229.8]+(21710-573)×
229.8=[11612+21197]×
229.8=7539508.2
Q,=[(11612+21119)-X]×
[215.9+(218.6-215.9)/(213.9-211.4)×
(213-211.4)]+[667.8+(667.9-667.8)/(213.9-211.4)×
(213-211.4)]×
X=(32809-X)×
217.63+667.86X=7140222.67+450.23X
所以7539508.2×
0.99=7140222.67+450.23X
X=719kg
Q=(12095+731)+(24462-731)×
229.8=(12826+23731)×
229.8=8400798.6
Q,=(12826+23731-X)×
217.63+667.86X=(36557-X)×
217.63+667.86X=7955899.91+450.23X
所以8400798.6×
0.99=7955899.91+450.23X
X=802kg
(4)NP107二次蒸汽量:
Q=(10584+719)×
217.63+(32809-719)×
217.63=(11303+32090)×
217.63=9443618.59,
Q,=(11303+32090-X)×
[204+(207.2-204)/(203.4-200.4)×
(201-200.4)]+[666.7+(667-666.7)/(263.4-200.4)×
(201-200.4)]×
X=(43393-X)×
204.6+666.76X=8878207.8+462.16X
所以9443618.59×
0.99=8878207.8+426.16X
X=1019kg
Q=(11955+802)×
217.63+(36557-802)×
217.63=(12757+35755)×
217.63=10557666.56
Q,=(12757+35755-X)×
204.6+666.76X=(48512-X)×
204.6+666.76X=9925555.2+462.16X
所以10557666.56×
0.99=9925555+426.16X
X=1139kg
(5)NP106二次蒸汽量:
Q=(11018+1019)×
204.6+(43393-1019)×
204.6=(12037+42374)×
204.6=11132490.6
Q,=(12037+42374-X)×
[189.7+(193.6-189.7)/(190.7-187.1)×
(188-187.1)]+[664.7+(665.4-664.7)/(190.7-187.1)×
(188-187.1)]X=(54411-X)×
190.68+664.88X=10375089.48+474.2X
所以11132490.6×
0.99=10375089.48+474.2X
X=1362kg
Q=(12445+1139)×
204.6+(48512-1139)×
204.6=(13584+45373)×
204.6=12062602.2
Q,=(13584+45373-X)×
190.68+664.88X=(58957-X)×
190.68+664.88X=11241920.26+474.2X
所以12062602.2×
0.99=11241920.76+474.2X
X=1476kg
(6)NP105二次蒸汽量:
Q=(11378+1362)×
190.68+(54411-1362)×
190.68=(12740+53049)×
190.68=12544646.52
Q,=(12240+53049-X)×
[176.4+(178.8-176.4)/(176.8-174.5)×
(175-174.5)]+[662.4+(662.8-662.4)/(176.8-174.5)×
(175-174.5)]X=(65789-X)×
176.88+662.49X=11636758.32+485.61X
所以12544646.52×
0.99=11636758.32+485.61X
X=1611kg
Q=(12852+1476)×
190.88+(58957-1476)×
190.88=(14328+57481)×
190.88=13706901.92
Q,=(14328+57481-X)×
76.88+662.49X=(71809-X)×
176.88+662.49X=12701575.92+485.61X
所以13706901.92×
0.99=12701575.92+485.61X
X=1788kg
(7)NP106二次蒸汽量:
Q=(10855+1611)×
176.88+(65789-1611)×
176.88=(12466+64178)×
176.88=13556790.72
Q,=(12466+64178-X)×
[159.3+(162.5-159.3)/(161.2-158.1)×
(161-158.1)]+[658.5+(659.3-658.5)/(161.2-158
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