低氮燃燒器改造后之爐渣含碳量升高的治理方案

1低氮燃燒器改造之更換木塊分離器篩網、清理粗粉分離器保證分離器分離效果、磨煤機篩球提高煤粉細度

1. The modification of low nitrogen burner can replace the screen mesh of the wood block separator, clean the coarse powder separator to ensure the separation effect of the separator, and improve the fineness of coal powder by grinding machine sieve ball

針對磨煤機出粉偏粗的情況，進行了以下工作：利用機組停運及制粉系統檢修機會逐臺更換甲乙丙制粉系統木塊分離器出口篩網，防止雜物進入粗粉分離器。清理甲乙丙粗粉分離器時，發現內部雜物較多，雜物主要有雜草、編織袋、樹枝、鐵絲等。粗粉分離器內部雜物較多原因是木塊分離器出口篩網嚴重磨損，雜物隨風進入分離器內部。

In view of the coal mill out of coarse powder, for the following work: using immobilized and pulverizing system maintenance opportunity by changing sieve armour ethylene-propylene block separator exports in the coal pulverizing system, to prevent debris into the coarse powder separator. When cleaning the thick powder separator of a, b and c, it was found that there were more internal sundries, such as weeds, woven bags, branches and iron wires. There are many sundries in the coarse powder separator, which is caused by the serious wear of the screen net at the outlet of the wood block separator.

將甲乙丙制粉系統粗粉分離器折向擋板角度統一調整至45°，固定折向擋板調整背帽，防止運行中擋板角度隨意變化，保持粗粉分離器最佳分離效果。利用機組停運機會，聯系檢修甩球，發現碎鋼球、不規則鋼球較多，個別磨煤機襯瓦缺角、斷裂。修復襯瓦后重新按1：1：1填充直徑為30mm、40mm、50mm的鋼球。經過上述處理和治理，煤粉細度恢復正常，

Will armour ethylene-propylene coarse powder separator to baffle Angle in the coal pulverizing system unified adjust to 45 °, fixed bends to the baffles are adjusted the cap, prevent in the operation of the baffle angles vary, keeping the best separation effect of the coarse powder separator. It is found that there are many broken steel balls and irregular steel balls in contact with the inspection and throwing ball when the unit is out of service. After repairing the liner, refill the steel ball with diameter of 30mm, 40mm and 50mm at 1:1:1. After the above treatment and treatment, the fineness of coal powder returned to normal.

制粉系統治理后，煤粉細度達到正常范圍，爐渣含碳量有好轉的趨勢，但仍然偏高，說明煤粉細度偏高是爐渣含碳量偏高的原因之一，但不是主要原因。

After the coal pulverizing system of governance, pulverized coal fineness to the normal range, slag carbon content has a tendency to turn for the better, but it is still on the high side, shows that pulverized coal fineness on the high side is one of the reasons for the slag carbon content on the high side, but not the main reason.

2低氮燃燒器改造之切換制粉系統，改變制粉系統運行方式，觀察制粉系統對爐渣含碳量的影響

2. The switching powder making system of the low nitrogen burner was reformed, the operation mode of the powder making system was changed, and the influence of the powder making system on the carbon content of slag was observed

在運行參數正常、煤粉細度情況下，爐渣含碳量仍然偏高，變換制粉系統運行方式，如甲乙丙、甲乙丁、甲丙丁、乙丙?。ㄖ品巯到y自下至上為甲乙丙?。?，每種方式運行一天，觀察各層低氮燃燒器對爐渣含碳量的影響，改變制粉系統運行方式后，爐渣含碳量沒有明顯的變化，可以排除制粉系統運行方式對爐渣含碳量的影響。

In running parameters under normal operation, the fineness of pulverized coal slag carbon content is still on the high side, transform the coal pulverizing system operation mode, such as armour ethylene-propylene, party a and party b, d, a BingDing, YiBingDing (pulverizing system from the bottom of a YiBingDing), running a day each way, observing the layers of low nitrogen burner for slag carbon content, the influence of change of the coal pulverizing system operation mode, slag carbon content had no obvious change, can eliminate the coal pulverizing system operation mode for the effects of slag content.

3低氮燃燒器改造之修復或更換低氮燃燒器

Repair or replace the low-nitrogen burner with a modified low-nitrogen burner

對低氮燃燒器修復、更換進行的具體工作如下：（1）重新進行切圓校核符合要求。（2）進行噴燃器執行機構調試，保證內外擺動角度一致、同步擺動靈活無卡澀；對燃盡風擋板也進行了檢查調試，保證靈活無卡澀。（3）對所有低氮燃燒器進行修復或更換，所有低氮燃燒器做耐磨處理。

The specific work of repair and replacement of low nitrogen burner is as follows: (2) conduct the actuator debugging of the burner to ensure the internal and external swing angles are consistent and the synchronous swing is flexible without sticking; The exhaust air baffle is also checked and debugged to ensure flexibility and smooth. (3) repair or replace all low-nitrogen burners, and wear resistant all low-nitrogen burners.