推荐回答（1个）
1.
热载体炉的正常运行指标
热载体炉正常运行是要保证给用热设备提供足够的热量。因此
,
热
载体炉应在规定的压力、
温度和流量下运行。
有机载体炉供热量与输
出介质的流量和温度有关
,
当流量一定时
,
介质的出口温度高
,
则输出
热量大；
介质出口温度低则输出热量少。
但实际上从用热设备散热后
回流入锅内的介质还有一定温度。
因此热载体炉的供热量是以进出口
温差和流量来衡量的。运行指标为流量
(m3/h)
和
进出口温差
At(?C)
。
液相导热油炉的流量一般是不进行调节的。为了保证液相炉的安
全运行
,
必须保证热载体在受热面管内的流速
,
也就是必须保证热载体
的一定流量。
为此不能用开关阀门的方式调节流量。
液相炉的出口温
度又受介质最高使用温度的限制。
一般限制出口温度应低于热载体制
导热油炉
2013
造厂提供的最高使用温度
20~40?C,
否则会加速热载体的分解、氧化
,
缩短使用寿命
,
且会使受热面和用热设备的散热器壁上沉积焦垢
,
降低
传热效率。
由此可见
,
液相炉运行调节指标主要是进出口温差。当进出口温差
减小时
(
回油温度提高
),
说明用热量减少
,
应当相应减弱燃烧；
当回油温
度降低时则应强化燃烧。
有机热载体导热油炉的供热量与用热机的散热量有着密切关系。
有时回油温度高而用热机温度却上不去
,
不能满足生产需要。有的单
位采取提高出口温度的办法来保证供热量
,
结果使出口温度接近甚至
超过热载体的最高允许使用温度
,
从而又加重了结焦、结垢程度
,
使用
热机的散热器传热效率更低
,
形成恶性循环
,
直至炉管爆破被迫停炉。
因此
,
当回油温度高而用热机不能满足生产时
,
首先应从用热机方面查
原因
,
如散热器并联运行时、油路设计不合理、流量分配不均；用热
机管道结垢
,
流量不足；散热器积垢传热效率低或烘干织物时水蒸气
未及时排除
,(
通风管堵塞
)
等
,
不能盲目采用提高出口温度的方法来增
加供热量。
当出口温度超温
,
超温报警器报警时
,
应及时停炉清洗。
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