煤矸石制砖余热循环利用系统及应用

为利用煤矸石制砖过程产生的大量余热,探讨了煤矸石制砖排烟、排潮废热回收利用的可行性,研究了排潮、排烟废热回收利用工艺,并以某煤矿矸石砖厂为例,对煤矿矸石砖厂制砖烟气余热利用工程运行效果和经济、社会效益进行分析。研究表明：采用热泵技术与热管技术相结合的回收工艺可实现矸石砖厂排潮、排烟余热的有效梯级利用,新型梯级烟冷器出水温度稳定在60℃以上,热泵机组出水温度在45～55℃,能满足不同供热形式的煤矿用热需求,可替代锅炉供热,节能减排效果显著。

Application on Residual Heat Circulated Utilization System of Coal Rejects Brick Making

According to the utilization issue of great residual heat occurred from the coal rejects brick making process,the paper discussed the feasibility of the waste heat recovery and utilization from the smoke discharging and moisture removing of the coal rejects brick making.The paper had a study on the waste heat recovery and utilization technology of moisture removing and smoke discharging.Taking a coal rejects brick plant of a mine as an example,an analysis was conducted on the operation effect and the economic and social benefits of the flue gas residual heat utilization project of the brick making in the mine coal rejects brick plant.The research showed that the recovery technology combined with the thermal pump technology and the thermal pipeline technology could have an effective chain utilization of the residual heat from the moisture removing and smoke discharging in the coal rejects brick plant.The outlet water temperature of the new chain smoke cooler could be stabilized over 60 ℃ and the outlet water temperature of thermal pump unit would be ranging from 45～55 ℃.Those two thermal water could meet the mine heat supply requirements with different way and could replace the boilers for the heat supply.Therefore,the energy conservation and emission reduction effects would be remarkable.