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酷游网址讲解锅炉运行注意的各项事宜

更新时间:2018-03-06 点击数:801

 

1. 燃烧不稳时投油,负压变正即退出油枪,能避免大正压冲击吗?为什么?
1 combustion instability when the oil, negative pressure variable is to exit the gun, can avoid the Taisho pressure impact? Why?
不能;因为炉膛负压变正即说明部分熄灭的煤粉被点燃,点燃部分熄灭煤粉产生的冲击力不会因停运油枪而降低,退油枪的后果是有可能再次发生灭火。
Not because of negative pressure of furnace hearth is changing; that part out of the coal powder is ignited, lit the impact is not part of the pulverized coal generated oil gun extinguished cause outage decreases, return oil gun consequences is likely to happen again fire.
2.投汽压自动压力高,给粉机低转速停留,氧量高应避免灭火发生?
2 cast steam pressure automatic pressure high, to low rotating speed of the powder residence, avoid fire occurrence of high oxygen should be?
应先投油稳燃,然后解除汽压自动,根据情况提高运行给粉机转速并停运1~2台给粉机,必要时减少送风量,使氧量和汽压迅速恢复正常。最下排给粉机转速≮800转/分。
Should first cast oil combustion stability, then lift the pressure automatically, according to the situation to improve the operation of rotating speed of pulverized coal feeder and outage of 1 ~ 2 units to the powder machine, air supply volume decreased when necessary, make oxygen and steam quickly returned to normal. The row to the rotating speed of the powder less than 800 rpm.
3. 运行中短时处理给煤机故障,制粉系统应采取哪些防止锅炉灭火的措施?
3 running in the short-time processing coal feeder fault, pulverizing system should be taken to prevent the boiler fire extinguishing measures?
关小排粉机入口档板,控制排粉机电流低于运行电流1~1.5A,全开在循环门,控制磨出口温度在80度左右运行,如燃烧难以稳定时可请示司炉停止该制粉系统运行。
Close the small row of powder machine entrance baffle, control the current row of powder machine below operating current 1~1.5A, open loop control in the door, the outlet temperature of the mill run at about 80 degrees, such as combustion stability can be difficult to stop the operation of coal pulverizing system request stoker.
4. 灭火后投投油点火前为何应减少送风,关闭小二次风?
4 fire extinguishing after adding oil before ignition, why should reduce air, close the secondary wind?
灭火后炉膛温度低,过大的下二次风和过大的送风将使油枪的根部风过大,难以点燃油嘴,或使油的着火点后移,吹灭着火的油嘴,影响重新点火恢复。
Low temperature of the furnace fire, too large for two times under the wind and excessive supply air will make the gun root wind is too large, difficult to ignite and nozzle, or the oil ignition after the shift, blow out the fire nozzle, the influence of re ignition of recovery.
5. 锅炉灭火后,何时通知减负荷?减负荷幅度和速度应如何控制?
5 the boiler after the fire, when to notify the load shedding? The reduction of load and speed should be how to control?
灭火后当汽压开始下降时应立即通知减负荷。减负荷的速度和幅度不应使锅炉超压开排汽,应根据汽压和汽温下降幅度和灭火后点火恢复时间决定减负荷值。根据经验,一般220T/H炉正常灭火减负荷至20MW,400T/H炉正常灭火减负荷至40MW;
After the fire when the pressure began to decline when shall immediately notify the load reduction. To reduce the speed and magnitude of load should not make the overpressure open exhaust steam boiler, steam pressure and steam temperature should be based on the decline and recovery time after the fire ignition decided to reduce the load value. According to experience, the general 220T/H furnace normal fire load reduction to 20MW, 400T/H furnace normal fire load reduction to 40MW;
6. 低负荷运行时为何应在不影响安全的前提下维持稍低的氧量运行?
6 low load operation why should maintain oxygen running slightly low without compromising security?
低负荷运行时炉膛温度相对较低,煤粉气流的着火困难,燃烧稳定性相对较差,维持高氧量运行会进一步降低炉膛温度,降低炉膛内煤粉燃烧浓度,燃烧的抗干扰能力降低,导致灭火的发生。
Low load operation of furnace temperature is relatively low, difficult ignition of pulverized coal, combustion stability is relatively poor, maintain high operation oxygen will further reduce the temperature of the furnace, reducing the concentration of pulverized coal combustion furnace combustion, reduce the anti-interference ability, leading to the occurrence of fire.
7. 锅炉为何要设置防爆门?
Why to set up the 7 boiler explosion door?
发生炉膛爆炸时自动开启泄压,减轻爆炸对锅炉的冲击破坏力,避免炉膛水冷壁,炉墙和烟道的损坏。
The occurrence of furnace explosion automatically open when the pressure relief, destructive impact explosion of boiler to reduce, avoid the damage of the furnace water wall, the furnace wall and flue.
8. 运行中为何要开启粉仓吸潮管?
In operation of 8 why to open the powder bin moisture absorption tube?
排除粉仓和输粉机内的潮气,防止粉仓内的煤粉受潮结块,影响其流动性,并因潮气的排出使粉仓内的温度维持在合适值,防止煤粉的自燃爆炸。
The exclusion of a powder bin and lose moisture powder inside the machine, to prevent the coal powder bin damp agglomerate, affect its liquidity, and because of tidal discharge makes the powder barn temperature maintained at the appropriate value, to prevent the spontaneous combustion and explosion of pulverized coal.
9. 停止进水时为何要开启省煤器再循环门?
The 9 stop when water is why open economizer recycle valve?
锅炉停止进水时省煤器如仍受热,水通过循环管在省煤器,汽鼓之间形成循环,以保护省煤器的安全;
The boiler to stop when the water economizer if still heated, water pipe in the economizer cycle by cycle, the formation of steam drum, in order to protect the safety of the coal economizer;
10. 过热器热水浸泡反冲洗的作用?
10 superheater water soaking the backwash effect?
可将过热器管内所沉淀的易溶于水的硅酸等盐类经浸泡溶解,泡软后脱离管壁,由过热器反向冲洗至汽鼓排出,以防止过热器严重结垢和汽轮机通流部分结垢.
The superheater tube can be precipitated water soluble silicic acid salts such as soaking dissolved, the pipe wall from soaked until soft, composed of superheater reverse flushing to discharge to prevent the steam drum, superheater severe scaling and turbine flow section scaling.