民用低阶烟煤的半焦化洁净利用
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摘要
为了降低民用劣质煤散烧造成的大气污染,采用低阶烟煤热解半焦为原料,再黏结制成半焦质民用洁净型煤。型煤性质检测结果显示:型煤收到基热值达到26.8 MJ/kg,干基全硫含量≤0.22%。半焦质民用洁净型煤在普通炉具和节能炉具测试结果显示,SO_2、NO_x和烟尘排放分别达到和接近重点地区的新建燃气锅炉排放标准。与普通烟煤在节能炉具中对比测试结果表明,烟尘浓度降低了88.14%,排放量减少86.21%;SO_2浓度降低了70.91%,排放量减少70.83%;NO_x浓度降低了83.08%,排放量减少86.08%。与其他无烟煤型煤在相同条件下的测试对比结果表明:半焦质民用洁净型煤的烟尘排放浓度与其他无烟煤相当,排放烟气成分中SO_2和NO_x的浓度远低于其他无烟煤型煤的排放浓度。
Aim to reduce the air pollution caused by the bituminous coal burning,taking semi coke obtained by pyrolysing process of bituminous coal as raw material,the civil clean briquette was made with mixing biomass binder. Detection results of briquette properties showed that: The briquette received calorific value reached 26. 8 MJ/kg,the total sulfur content of dry briquette was less than or equal to 0. 3%. The test results of briquette in ordinary burner and energy-saving stoves showed that SO_2,NO_x and dust emission could meet or get closed to requirement of new built gas combustion boiler in key region. The comparison test results between briquette and bituminous coal in energy-saving stoves showed that the dust emission concentration was reduced by 88. 14%,emission amount was reduced by 86. 12%. The SO_2 emission concentration and amount was reduced by 70. 91% and 70. 83%,respectively. The NO_x emission concentration and amount was reduced by83. 08% and 86. 08%,respectively. Tests compared with other anthracite showed that the dust emission concentration was the similar level,the SO_2 and NO_x emission was far lower than other anthracite's emission.
Aim to reduce the air pollution caused by the bituminous coal burning,taking semi coke obtained by pyrolysing process of bituminous coal as raw material,the civil clean briquette was made with mixing biomass binder. Detection results of briquette properties showed that: The briquette received calorific value reached 26. 8 MJ/kg,the total sulfur content of dry briquette was less than or equal to 0. 3%. The test results of briquette in ordinary burner and energy-saving stoves showed that SO_2,NO_x and dust emission could meet or get closed to requirement of new built gas combustion boiler in key region. The comparison test results between briquette and bituminous coal in energy-saving stoves showed that the dust emission concentration was reduced by 88. 14%,emission amount was reduced by 86. 12%. The SO_2 emission concentration and amount was reduced by 70. 91% and 70. 83%,respectively. The NO_x emission concentration and amount was reduced by83. 08% and 86. 08%,respectively. Tests compared with other anthracite showed that the dust emission concentration was the similar level,the SO_2 and NO_x emission was far lower than other anthracite's emission.
引文
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[4]赵红涛,武建军,胡雪莲,等.粉煤成型及干燥工艺条件研究[J].广州化工,2011,39(13):96-98.
[5]张玉君,王继伟,刘定桦.用陕北半焦粉生产气化型焦的试验研究[J].煤炭工程,2015,47(10):119-121.
[6]叶钟林,陈雯,沈强华.铁合金用褐煤半焦成型研究[J].煤炭转化,2005,28(4):31-33.
[7]倪雅,武建军,邓建,等.成型压力对半焦制铸造型焦微观气孔结构影响[J].能源技术与管理,2008(3):99-101.
[8]任浩华.基于PVC热解生成HCl氯化回收LCD中的铟[D].北京:中国矿业大学(北京),2015.
[9]赵俊红.用于固体氧化物燃料电池的煤基碳燃料研究[D].太原:山西大学,2015.
[10]杨冲,侯影飞,李学佼,等.活化改性半焦用于烟气脱硫催化剂制备工艺优化[J].安全与环境学报,2015(3):186-190.
[11]窦金孝,李先春,余江龙,等.半焦负载铁基脱硫剂及其焦炉煤气脱硫特性[J].煤炭转化,2015(3):49-54.
[12]梅琳.高灰分低热值工业固体废弃物流化床燃烧特性的实验研究[D].重庆:重庆大学,2015.
[13]倪明江,李敏,方梦祥,等.富氢气氛对煤热解特性的影响[J].热力发电,2015(6):36-41.
[14]赵世永,周安宁.用半焦粉末制备型煤特性实验研究[J].煤炭转化,2012,35(1):61-64.
[15]刘明强.褐煤低温热解及半焦燃烧、成浆特性的试验研究[D].杭州:浙江大学,2013.