锅炉燃气改造方法是怎样的

2025-03-16 05:18:18
推荐回答(2个)
回答1:

锅炉燃气改造方法是怎样的:
1、机械化层状燃煤锅炉,要改成燃气锅炉,首先应取掉前后拱,同时考虑增加底部受热面,以取代炉排,防止炉排过热烧坏;
2、 燃煤炉改为燃气锅炉时,为防止炉膛爆炸,在锅炉的适当部位应装置防爆门,同时自动化控制上应增设 点火程序控制和熄火保护装置,以保证锅炉安全运行;
3、 燃气锅炉的对流受热面的烟速不会受飞灰磨损条件的限制,可适当提高烟气流速,使对流受热面的传热系数增大,在不增加锅炉受热面的情况下,可以提高锅炉的压力,此时应注意锅内汽水分离装置 的能力,以保证蒸汽品质,对有过热气的锅炉尤为重要。
4、小吨位燃煤锅炉改成燃气锅炉,即由原来的负压燃烧变为现在的微正压燃烧,必须注意炉墙结构及密封问题;
煤改气参考资料:http://www.zzzgrq.com/GLGZ/11.html

回答2:

锅炉燃气改造方法
1、对锅炉炉墙、烟道进行改造 燃煤锅炉的炉墙、烟道通常是由耐火层和保温层外加护板或红砖构成,这种结构的强度和密封性较差,锅炉改为燃气时其围护结构强度和密封性应进行必要的修理和改造,尤其是炉膛。
2、《锅炉安全技术监察规程》规定:燃气锅炉应在炉膛和烟道上加设防爆门,防止爆燃时炉墙受到破坏。
3、由于燃煤锅炉大部分为层燃炉,改为燃气(油)后为室燃,燃料和燃烧方式的改变将引起锅炉特性和传热特性的变化,有些变化影响到锅炉的安全运行。
锅炉改造我们常见得是锅炉煤改气,而且天然气作为一种优质、高效、清洁的化石燃料, 已经被广泛地应用于国民生活和生产的各个领域, 有专家认为21世纪将是天然气的时代。

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