论文部分内容阅读
一、化铁炉的节能新的铸造厂采用冲天炉比电炉多,新式冲天炉由于长期的发展而达到了目前较高的运行水平。分析冲天炉的能源消耗时可以看出,相当大一部分能量随着烟囱冒出的热气跑掉了。这部分余热的回收技术很复杂,中型或大中型冲天炉装上合适的余热回收装置(包括热交换器、汽轮机和交流发电机) 时,每生产1t铁,至少可回收电100kW·h。如果再安装第二套鼓风系统,则节能可达到400kW·h。大多数冲天炉,都可进行这样的技术改造。此外,改进各种炉子的保温措施,也可取得大量节能的效果。二、改变生产流程进行节能如果将铸造车间和组织加以改进,例如,可将浇包中的继续浇注铸件嫌温度太低而只能浇注锭块用的剩余铁水倒回熔炉,从而收到节能的效果。一般说来,回炉的铁水约占所熔化铸铁的5～10％。
First, the energy-saving iron furnace New foundry using the cupola furnace more than electric furnace, new cupola due to the long-term development reached the current high level of operation. Analysis of the cupola energy consumption can be seen, a considerable part of the energy with the chimney heat run away. Recycling technology for this part of the waste heat is very complicated. For mid-, medium- and large-sized cupola furnaces, a suitable waste heat recovery unit (including heat exchangers, steam turbines and alternators) can generate at least 100 kW / h of electricity for every 1 ton of iron produced. If you install the second set of blast system, the energy saving can reach 400kW · h. Most cupola, can make such a technological transformation. In addition, a variety of stoves to improve the insulation measures, but also can achieve a lot of energy-saving effect. Second, to change the production process to save energy If the casting shop and organization to be improved, for example, the casting can continue to pour too much temperature in the ladle can only be cast ingot with the remaining molten iron back to the furnace, which received energy effect. In general, the molten iron is about 5 ~ 10% melted cast iron.