大型电站煤粉炉燃用高钙煤的自身固硫效果

1025t h煤粉炉在满负荷下燃用高钙低硫的神木煤时,其自身固硫率高达27%～33%。在入炉的矿物灰和钙成分中,60%左右形成飞灰,只有不到10%形成炉底渣。在入炉硫分中,70%左右以气态SO2形式随烟气排放,只有不到10%以固态形式富集于飞灰中,不到1%固定于炉底渣中。XRD定性分析表明:飞灰中因高温熔融形成的玻璃状非晶相含量比底渣中高出许多,并含有自身固硫产物CaSO4和未反应的CaO晶相。在炉底渣中并未发现CaSO4或CaO晶相,但新生成了大量的钠长石晶相。图2表7参4     

新型静电离子导入器的研制

A novel electrostatic ion guide(EIG) was designed and manufactured according to the simion simulation. Favorable focusing effect with high transmission efficiency was achieved by optimizing different parameters. EIG was used to ensure the vacuum difference between electrospray ionization(ESI) and time of flight mass spectrometry(TOF MS), and achieve ion-neutral molecular separation as well.     

防火门安装常见问题及对策

论文针对防火门安装及设计中存在的问题进行了分析,提出了相应的处理对策,可以有效提高防火门安装的施工质量。