选煤厂课程设计

1、辽宁工程技术大学课程设计1设计条件及设计任务1.1选煤厂类型及工作制度矿井型动力煤选煤厂，年生产能力2.4Mt/a，每年工作330天，二班生产 班检修，每天选煤16h，主要供发电厂和民用。1.2煤层及煤质条件开采甲乙两层煤，按固定比例混合入选，粒度和密度组成见筛分和浮沉试验结果表,煤层系数=40/60表1-1甲煤层筛分试验结果表甲煤层筛分试验结果煤样总重：2927.5 kg总样灰分：35.61%粒级/mm产物名称产率重量/kg占本层/%Ad/%>100手选煤182.66.2435.30矸石99.43.3968.76小计281.99.6347.09100 50手选煤607.320.7532

2、.60矸石135.14.6168.76小计742.425.3639.18>50合计合计1024.434.9941.3650 25煤655.522.3936.6025 13煤347.111.8630.30136煤310.510.6130.5063煤170.95.8428.643 0.5煤262.28.9526.520.5 0煤156.95.3638.60500合计1903.165.0132.52毛煤总计2927.5100.0035.61原煤合计（除去大于 50mm级矸石和硫铁矿）2693.091.9932.72表1 - 2已煤层筛分试验结果表乙煤层筛分试验结果表m m z( 级 粒样 全

3、点%z( dA1>煤3338 o煤 夹28石8911计 小5981手选煤332831煤 夹3417石163计 小计 合O5>9925煤煤562O 沁3煤26233煤7785 a O3煤O a5 a煤9952计 总OO1534表1-3甲煤层破碎级筛分试验结果表甲煤层破碎级筛分试验结果表煤样质量：299.8kg占全样重：10.24% 煤样灰分：39.16%粒级/mm产率质量Qgr,d /MJ kg-1重量/kg占全样/%筛上 累计/%M ad/%Ad/%St,d/%50 2588.310.31一一43.69一一25 1386.610.11一一41.46一一13653.86.28一一36

4、.89一一6323.82.78一一32.13一一30.532.33.77一一29.90一一0.5 0151.75一一38.40一一总计299.834.99一一39.16一一表1- 4乙煤层破碎级筛分试验结果表乙层破碎级筛分试验结果表粒级/mm产率质量Qgr,d/MJ kg-1占全样/%Mad/%Ad/%St,d/%50 255.97一46.5一一25 135.2一43.75一一1365.18一41.1一一633.6一38.27一一3 0.55.9一37.46一一0.5 03.26一45.02一一总计29.12一42.83一一表1 - 5甲煤层自然级筛分浮沉试验报告表筛分特 性25 50mm13

5、 25mm6 13mm产率灰分产率灰分产率灰分22.3936.6011.8630.3010.6130.50密度本级本层灰分本级本层灰分本级本层灰分12345678910<1.315.913.498.3024.782.867.1414.681.438.801.3 1.430.506.6914.8931.443.6315.4337.563.6515.051.4 1.54.510.9922.126.020.7023.8012.531.2218.861.5 1.615.333.3631.5111.081.2829.045.860.5728.681.6 1.74.140.9145.074.550.

6、5341.554.490.4440.361.7 1.81.500.3346.201.400.1646.702.310.2245.60>1.828.126.1678.7320.742.4077.9922.582.1972.16小计100.0021.9236.38100.0011.5530.00100.009.7230.14煤泥2.100.4745.852.650.3145.858.350.8946.91总计100.0022.3936.58100.0011.8630.42100.0010.6131.53续表1-536mm0.5 3mm0.5 50mm产率灰分产率灰分产率灰分5.8428.64

7、8.9626.5259.6631.97本级本层灰分本级本层灰分本级本层灰分11121314151617181916.040.836.5123.711.685.8018.5510.297.4938.051.9712.0936.672.609.2933.4318.5413.9411.710.6118.5210.180.7219.227.634.2320.455.310.2730.363.580.2530.4310.355.7430.584.800.2540.804.060.2939.124.332.4042.301.570.0844.301.350.1048.271.610.8946.1922.5

8、11.1772.2120.451.4573.1124.1113.3776.34100.005.1828.34100.007.0925.02100.0055.4631.7511.220.6647.6020.841.8752.687.034.1949.39100.005.8430.47100.008.9630.78100.0059.6632.99表1 - 6乙煤层自然级筛分浮沉试验报告表筛分2550mm1325mm613mm特性产率灰分产率灰分产率灰分14.5347.1612.6543.4812.6242.33密度本级全样灰分本级全样灰分本级全样灰分12345678910-1.34.30.6115

9、.620.10.0116.563.080.3815.631.31.439.895.6639.1542.55.2332.9849.16.1133.781.41.521.663.0839.524.943.0739.6120.312.5336.781.51.66.570.9344.538.251.0244.566.550.8144.651.61.87.441.0649.637.380.9149.525.660.7046.121.820.142.8677.416.832.0772.9615.31.9072.27小计10014.2047.0410012.3143.5210012.4441.13煤泥2.2

10、50.3349.82.680.3447.861.420.1848.65总 计10014.5347.1010012.6543.6310012.6241.23续表1-636mm0.53mm0.550mm产率灰分产率灰分产率灰分8.7738.6814.3738.08本级全样灰分本级全样灰分本级全样灰分1112131415161718199.370.7813.8516.182.2113.626.553.9914.1749.294.1033.5245.476.2032.8544.8327.3134.4919.011.5835.2918.112.4743.5620.8912.7239.255.530.46

11、42.325.010.6845.776.413.9144.524.420.3746.784.240.5849.515.943.6248.6112.381.0370.3710.991.5072.9415.379.3673.891008.3237.6410013.6437.4510060.9141.695.10.4548.535.10.7348.653.222.0348.681008.7738.1910014.3738.0210062.9441.91表1 - 7甲煤层破碎级筛分浮沉试验报告表筛分特 性25 50mm13 25mm6 13mm产率灰分产率灰分产率灰分10.3143.6910.1141

12、.466.2836.89密度本级本层灰分本级本层灰分本级本层灰分12345678910<1.35.630.5811.179.570.9612.309.210.575.901.3 1.427.472.8218.0628.162.8418.6028.521.7810.581.4 1.55.010.5221.304.300.4325.5819.081.1930.641.5 1.619.602.0131.8616.581.6732.108.520.5334.901.6 1.75.500.5741.635.550.5640.566.200.3938.601.7 1.83.140.3246.203.

13、500.3545.304.000.2544.30>1.833.643.4673.8432.343.2668.7724.471.5376.00小计100.0010.2841.49100.0010.0738.92100.006.2435.14煤泥0.310.0350.200.420.0450.200.620.0451.20总计100.0010.3141.51100.0010.1138.97100.006.2835.24续表1-736mm0.5 3mm0.5 50mm产率灰分产率灰分产率灰分2.7832.133.7729.90本级本层灰分本级本层灰分本级本层灰分1112131415161718

14、1914.310.394.1020.160.755.709.873.268.4632.030.889.7033.961.2611.0028.999.5815.1312.730.3520.0610.050.3721.108.662.8625.658.240.2329.647.110.2632.8314.244.7132.245.850.1639.105.240.2038.605.651.8740.152.720.0744.901.950.0745.803.241.0745.3424.130.6674.7521.530.8072.2029.369.7172.41100.002.7530.19100

15、.003.7227.81100.0033.0637.030.950.0352.101.340.0549.600.570.1950.51100.002.7830.40100.003.7728.10100.0033.2537.10表1 - 8乙煤层破碎级筛分浮沉试验报告表筛分2550mm1325mm613mm特性产率灰分产率灰分产率灰分5.9757.825.2054.145.1852.99密度本级全样灰分本级全样灰分本级全样灰分12345678910-1.34.30.2526.280.10.0127.223.080.1626.291.31.439.892.3349.8142.52.1543.644

16、9.12.5144.441.41.521.661.2650.1624.941.2650.2720.311.0447.441.51.66.570.3855.198.250.4255.226.550.3355.311.61.87.440.4360.297.380.3760.185.660.2956.781.820.141.1888.0616.830.8583.6215.30.7882.93小计1005.8457.751005.0654.171005.1151.83煤泥2.250.1330.922.680.1458.521.420.0759.31总 计1005.9757.151005.254.291

17、005.1851.93续表1-836mm0.53mm0.550mm产率灰分产率灰分产率灰分3.6149.345.9048.7425.8652.86本级全样灰分本级全样灰分本级全样灰分1112131415161718199.370.3224.5116.180.9124.286.561.6420.8149.291.6944.1845.472.5543.5144.8511.2334.8119.010.6545.9518.111.0154.2220.905.2337.785.530.1952.985.010.2856.436.421.6141.994.420.1557.444.240.2460.175

18、.941.4941.6412.380.4281.0310.990.6283.615.383.8557.641003.4348.371005.6048.1110025.0338.915.10.1859.195.10.3059.313.220.8349.581003.6148.921005.948.6810025.8639.25112煤质资料综合与分析2.1筛分资料综合与分析2.1.1筛分试验资料审查、综合与灰分校正对于自然级来说，确定各层煤在入厂（选）原煤中所占的百分数表2-1中，。K150%, K250%, K K1 K2100%。将各层煤占本层煤的粒度级别分别换算成占入厂（选）原煤的百分数入

19、Ki入100入入选的各层煤中某一粒 级换算成占入选原煤的 百分数,%K入某层煤占入厂原煤的百 分数,入各层煤某一粒级占本煤 层的百分数，%如表2-1中第4栏和第7栏。将占全样各个数值按等粒级相加，即得原煤各粒级的含量。如表2-1中1047综合后各粒度级的灰分用加权平均法计算，例如，表2-1中,第11栏各行为4 A57 A8A1110对于破碎级来说，从表2-1中，可以确定破碎级各煤层在入厂原煤中所占的百分数如2-2中，K17.67%, K223.85%, K 心 &31.52%。然后将破碎级资料用同样的方法换算成占入选原煤的百分数进行综合，将自然级和破碎级的数量和灰分进行综合，其结果填

20、入表2-3中。表2-1两层原煤筛分试验综合表甲、乙层原煤筛分试验结果粒级（mm）产物名称甲层（Ka =40%）乙层（ KB=60% ）综合（K=100%）本层全样Ad本层全样Ad本级全样Ad/%/%/%/%/%/%/%/%/%>100手选煤6.242.5035.33.332.0015.084.494.4926.31夹矸煤0.000.000.005.823.4940.073.493.4940.07矸石3.391.3668.769.85.8876.117.247.2474.73小计9.633.8547.0918.9511.3754.3215.2215.2252.4910050手选煤20.75

21、8.3032.62.331.4013.809.709.7029.89夹矸煤0.000.000.004.232.5446.712.542.5446.71矸石4.611.8468.763.612.1778.044.014.0173.77小计25.3610.1439.1810.176.1050.2916.2516.2543.35>50合计34.9914.0041.3629.1217.4752.9131.4731.4747.775025煤22.398.9636.6014.538.7247.1617.6717.6741.812513煤11.864.7430.3012.657.5943.4812.3

22、312.3338.41136.0煤10.614.2430.5012.627.5742.3311.8111.8138.086.03.0煤5.842.3428.648.775.2638.687.607.6035.593.00.5煤8.953.5826.5214.378.6238.0812.2012.2034.690.50.0煤5.362.1438.607.944.7642.656.916.9141.39500合计65.0126.0032.5270.8842.5342.2568.5368.5338.56毛煤总计100.0040.0035.6110060.0045.35100.00100.0041.4

23、6表2-2入选原煤+ 50mn破碎级筛分试验结果综合表甲、乙两层原煤+50mm破碎级筛分试验结果综合表粒级/mm甲层(Ki=11.70%)乙层（K2=%）综合(K =100 %)占本层占全样Ad占本层占全样Ad占本级占全样Ad校正/%/%/%/%/%/%/%/%/%502510.314.1243.695.973.5857.8224.477.7050.2651.24251310.114.0541.465.23.1254.1422.787.1746.9847.96136.06.282.5136.895.183.1152.9917.865.6245.8046.786.03.02.781.1132.1

24、33.612.1749.3410.423.2843.5244.503.00.53.771.5029.905.93.5448.7416.025.0443.1344.110.50.01.750.7038.403.261.9653.318.452.6649.3950.37500 合计34.9914.0039.1629.1217.4752.9110031.4746.7947.77表2-3 入选原煤+ 50mn破碎级与自然级筛分试验结果综合表甲、乙层原煤破碎级与自然级筛分试验结果综合表粒级/mm自然级破碎级综合本级全样Ad本级全样Ad本级全样Ad灰分/%/%/%/%/%/%/%/%/%123456789

25、1011502525.7917.6741.8124.477.750.2625.3725.3744.37251318.0012.3338.4122.787.1746.9819.5019.5041.5650-05mm 的136.017.2411.8138.0817.865.6245.8017.4317.4340.57灰分为6.03.011.097.6035.5910.423.2843.5210.8810.8837.9841.15%3.00.517.8112.2034.6916.025.0443.1317.2417.2437.160.50.010.086.9141.398.452.6649.399.

26、579.5743.62500 合计100.0068.5338.56100.0031.4746.79100.00100.0041.15辽宁工程技术大学课程设计2.1.2筛分资料综合结果分析根据筛分资料综合结果绘制入选原煤粒度曲线，对粒度组成、物理和化学特性及对选 煤产品结构的影响程度做出详细分析。图2-入选煤粒度曲线232.2浮沉资料综合与灰分校正2.2.1浮沉资料综合浮沉试验资料综合的原则与方法和筛分资料相似，是按等密度级综合的原则进行。简单叙述如下：1）将自然级、破碎级中各密度级所占本级质量百分数换算成占全样的质量百分数，然后按等密度级相加得该煤层自然级和破碎级0.550mm的综合浮沉质量百

27、分数，如表 1-6、表1-7中第3栏、第6栏、第9栏、第12栏和第15栏。综合的密度级的灰分用加权平均法求出183691215A46A7A1012A1315AI62）将占本层全样第18栏换算成占入选全样第19栏，其比列分别从表2-1中得出3）将两层煤的自然级和破碎级分别综合得到浮沉资料见表2-4。表2-4甲层煤自然级与破碎级浮沉试验综合表甲层煤自然级与破碎级浮沉试验综合表密度级自然级破碎级综合/kg L-1占本 级占入选Ad占本级占入 选Ad占本 级占全 样Ad/%全样/%/%/%全样/%/%/%/%/%12345678910<1.318.554.127.499.871.308.4615

28、.315.427.731.31.433.437.4213.9429.003.8315.1331.7711.2514.351.41.57.631.6920.458.661.1525.658.012.8422.551.51.610.352.3030.5814.241.8832.2411.804.1831.321.61.74.340.9642.305.650.7540.154.821.7141.361.71.81.610.3646.193.240.4345.342.220.7945.73>1.824.115.3576.3429.373.8872.4126.079.2374.68小计（去泥）10

29、0.0022.1831.75100.0013.2237.03100.0035.4133.72煤泥7.031.6849.390.570.0850.514.721.7549.44总 计100.0023.8632.99100.0013.3037.10100.0037.1634.46表2-5甲层煤自然级与破碎级浮沉试验综合表乙层煤破碎与自然级综合浮沉试验表密度级自然级破碎级综合/kg L-1占本级占入选Ad占本级占入选Ad占本级占全样Ad/%全样/%/%/%全样/%/%/%/%/%12345678910<1.36.552.4014.1711.110.9825.436.553.3817.451.3

30、1.444.8316.3834.4944.856.7445.1544.8323.1237.601.41.520.897.6339.2520.903.1449.9120.8910.7742.361.51.66.412.3444.526.420.9655.186.413.3147.621.61.72.380.7246.512.380.3057.621.981.0249.781.71.83.561.4450.013.560.6060.373.962.0453.06>1.815.375.6273.8915.382.3184.5515.377.9376.99小计（去泥）100.0036.5441.

31、69100.0015.0353.57100.0051.5745.15煤泥3.221.1848.683.220.4859.343.121.6651.78总 计100.0037.7141.91100.0015.5253.76100.0053.2345.37222浮沉资料的灰分校正浮沉资料的校正通常用调出量法。校正的基准为筛分综合表中的相应粒级综合校 正灰分值为准。注意煤泥灰分不校正，则A筛A浮式中-灰分校正系数，此值可正、可负， %A筛-筛分表中参加浮沉各粒级的综合校正灰分减去综合浮沉表中浮沉煤泥的灰分，%A浮 -综合浮沉表中各密度级累计灰分(去泥)，%而 A 筛=40.78 %A浮 =41.15

32、% = A 筛A浮 =|38.87-36.34|=0.37% >0.2%校正前后的灰分仍为除去浮沉煤泥的灰分，但其方法假定各密度级灰分不变，调整各 密度级质量百分数。即，1) +1.8kg/L密度级质量百分数增加x%，同时相应减少-1.8kg/L密度级的质量百分数 x%，其总质量百分数仍为100%。增减x%后，建立新的平衡关系如下(1.8 X)A 1.8 ( 1.8 X)A 1.8 100 A筛化简后，得：100(A筛 A浮)x (A 1.8 A 1.8 )式中，x校正值，%A筛-筛分表中参加浮沉各粒级的综合校正灰分减去综合浮沉表中浮沉煤泥的灰分，%A浮 -综合浮沉表中各密度级累计灰分(

33、去泥)，%A 1.8- +1.8kg/L 密度级灰分，%A 1.8- -1.8kg/L 密度级灰分，%而 A8=74.69 A8=31.15100 (40.78 41.15)x=-0.84(75.7531.59)2)按校正值x将大于+1.8kg/L和-1.8kg/L密度级的质量百分数进行调整。考虑到 x 应按比例分配到+1.8kg/L和-1.8kg/L各密度级中去则有：1.8=1.8+ X =17.16-0.84=16.23nn1.8 =n1.81.8 X100 1.8式中 1.8、1.8-分别为+1.8kg/L密度级调整后和调整前的质量百分数， %;n1.8、n1.8-分别为-1.8kg/L

34、密度级调整后和调整前的质量百分数,%。如果+1.8kg/L密度级别中，不止一个密度级，也参照-1.8kg/L密度级的算法表2-表2-6浮沉试验综合结果表甲、乙层煤500.5mm浮沉试验综合表密度级甲层煤乙层煤综合校正/kg L-"1本级全样Ad本级全样Ad本级全样Ad本级全样Ad/%/%/%/%/%/%/%/%/%/%/%/%12345678910111213<1.315.315.427.736.553.3817.4510.128.8011.4610.018.7111.461.31.431.7711.2514.3544.8323.1237.6039.5134.3729.9939

35、.1034.0129.991.41.58.012.8422.5520.8910.7742.3615.6513.6138.2315.4813.4738.231.51.611.804.1831.326.413.3147.628.617.4938.538.527.4138.531.61.74.821.7141.361.981.0249.783.142.7344.503.102.7044.501.71.82.220.7945.733.962.0453.063.252.8351.023.212.8051.02>1.826.079.2374.6815.377.9376.9919.7317.1675.

36、7520.5716.2375.75小计（去泥）10035.4133.7210051.5745.1510086.9840.50100.0086.9841.12煤泥4.721.7549.443.121.6651.783.783.4150.583.783.4250.58总 计10037.1634.4610053.2345.3710090.3940.88100.0090.3941.483原煤可选性评定与工艺流程制定3.1可选性曲线评定与产品结构根据“浮沉试验综合结果表”完成“产率、灰分、浮沉物及邻近物密度组成计算,做出入选煤层500.5mm粒级浮沉试验综合表”并根据此表绘制出原煤可选性曲线。表3-1

37、入选煤层500.5mm粒级浮沉试验综合表0.550mm粒级原煤浮沉试验综合表密度级/g cm-3产率/%灰分/%累计分选密度±).1 /g cm-3浮物沉物产率/%灰分/%产率/%灰分/%密度级/g cm-3产率/%123456789<1.310.1211.4610.1211.46100.0040.301.3044.571.3 1.439.5129.9949.6326.2189.8843.551.4055.161.4 1.515.6538.2365.2829.0950.3754.191.5024.251.5 1.68.6138.5373.8830.1934.7261.391.6

38、011.741.6 1.73.1444.5077.0230.7726.1168.921.706.391.7 1.83.2551.0280.2731.5922.9872.251.803.22>1.819.7375.75100.0039.6519.7375.75一一合计100.0041.12一一一一一一煤泥3.7850.58一一一一一一总计100.0041.48一一一一一一图3-1入选煤层可选性曲线3.3.1选煤产品结构方案由于入选原煤为动力煤，对于电力企业及用户的要求，精煤灰分视用户要求而定。从图3-1可以看出原煤的可选性一般，属于难选煤； 同时也看出矸石产量过高的缺点，所以精 煤理论灰分

39、确定为27%, 28%, 29%三个级别，对应的理论分选密度为1.39 g/cm3、1.40 g/cmi3、31.41g/cm。取精煤灰分为27%,矸石灰分为75.16%,通过可选性曲线可得，精煤产率为44.13%, 矸石产率为19.23%，则中煤产率为100%-44.13%-19.23% =38.64%，理论分选密度为1.39 g/cm3,中煤灰分为41.95%,精煤和中煤分界灰分为35.02%，通过3± （曲线可知分选密度 邻近物的产率大于40%，说明原煤在这个分选密度下极难选。万案U取精煤灰分为28%,矸石灰分为76.60%，通过可选性曲线可得，精煤产率为47.66%， 矸石产

40、率为17.89%，则中煤 产率为100%-47.66%-17.89%=34.45%，理论分选 密度为 1.40g/cm3，中煤灰分为43.68%，精煤和中煤分界灰分为36.45%，通过3± 0曲线可知分选 密度邻近物的产率大于40%，说明原煤在这个分选密度下极难选。、J-it -万案川取精煤灰分为29%,矸石灰分为78.02%，通过可选性曲线可得，精煤产率为53.27%， 矸石产率为 17.11%，则中煤产率为 100%-53.27%-17.11% =29.62%，理论 分选密 度为 1.41g/cm3，中煤灰分为45.45%，精煤和中煤分界灰分为37.89%，通过3± 0

41、曲线可知分选 密度邻近物的产率大于40%，说明原煤在这个分选密度下极难选。根据可选性曲线，确定出如下方案：例如方案1取A精 =27.00%，根据可选性曲线，可查出浮物产率=44.13%，临界灰分 =35.02%，沉物产率 沉物=56.87%，理论分选密度=1.39g cm 3，取矸石灰分A矸石=75.16%，矸石产率 矸石=19.23%，所以中煤产率中煤100精煤矸石=38.64%，A中 = 100 A总 A精煤精煤 A矸石矸石=42 36中煤3.3.2产品利润计算方法根据动力煤粒级及灰分划分计算销售收入。销售收入=年处理量M精煤各粒级产品产率X对应精煤灰分基价（元）>对应煤种比价（%）

42、+中煤各粒级产品产率X寸应中煤灰分基价（元）X煤种比价（%）方案一：销售收入=2400000X（2.23% X90.40%X132%< 350+4.18%X90.40%X139%< 350+8.97%X90.40%X150%< 350+6.59% X90.40% X36%+6.39%X90.40% X32%x 350+14.77% X90.40% X107%X350+1.95% X54.40% X3 2%+3.64%X54.40% X139%X350+7.83% X54.40% X150%X350+5.75% X54.40% X36%+5.57%X54.40% X132%X3

43、50+12.89% >54.40% X07%X350) =64083.51 万元方案二：销售收入=2400000X(2.47% X90.40%X132%< 350+4.61%X90.40%Xl39%< 35O+9.91%X9O.4O%X15O%< 350+7.28%X90.40% X36%+7.06%X90.40% X32%X350+16.02% X90.40% X07%X350+1.78% X47.20% X32%+3.34%X47.20% X139%X350+7.17% X47.20% X150%X350+5.27% X47.20% X36%+5.10%X47.20% X132%X350+11.80% >47.20% X07%X350) =63617.06 万元方案三：销售收入=2400000X(2.76% X85.60%X132%< 350+5.16%X85.60%X139%< 350+11.08%X85.60%X150%< 350+8.14%X 85.60% X136%+7.89%X85.60% X32%X350+18.25% X35.60% X