Main steam qualified brown coal hot water szl boiler temperature abnormal phenomenon of how to do 1, main steam temperature anomalies alarm. 2, the rapid variation of the main steam temperature, a secondary damper frequently significantly reducing water operation. 3, starting superheat outlet steam separator above or below normal. 4, if the steam with water, the unit will water shock occurs. 1 reason, the fuel and water supply imbalance, the separator outlet temperature abnormality. 2, coal combustion conditions change or affect, such as excessive load lift; and pulverizing mill administration system abnormality stop; means automatically increase or decrease the failure rate is too large amount of wind and the like. 3, the central flame furnace changes, such as the bottom seal damage, W and inadequate flame downstroke. 4, the control failure by warm water, warm water flow rate reduction is abnormally reduced or increased. 5, feedwater temperature mutation. 6, does not match the wind coal. 7, the secondary combustion heating surface. 8, furnace coking or fouling seriously. 9, heating surface leakage squib. 10, flue gas damper opening degree is not normal. 11, coal sudden change occurred. 12, the uniformity of the powder feeding substantial change occurs. 1 process, failure caused by unit coordinated coal - water ratio should be immediately released coordinate offset, in accordance with the current load demand, with reference to the start of the steam superheat separator, and adjusting the amount of fuel corresponding to the amount of water, with one, two main desuperheating water rapidly steam temperature control in a normal range; when the coal - water ratio should avoid imbalance after coal and water while adjusting; when coal - water ratio is adjusted to further adjust the load after a relatively stable; contact maintenance processing timely. 2, when the water supply system fault condition occurs a significant disturbance furnace should pay attention and automatically coordinated working conditions, so as not to manual intervention, when not working properly coordinated and automated, should be manually adjusted, stable water flow, referring to separation according to the water flow steam superheat, the adjusted amount of fuel, with a secondary spray water rapidly controlling the main steam temperature within the normal range; contact maintenance processing timely. 3, due to rapid changes in load caused by the load change rate should be adjusted; load change caused due to protective operation or the like caused by heat load to be quickly adjusted to maintain the boiler pressure of the main steam stability. 4, by warm water automatic dysregulation, should be appropriate Save warm tone is switched to the manual may be an intermediate point of the feedwater control system be corrected for temperature if necessary, or the feedwater to switch control to manual control, due to lower lifting and lowering the load speed to prevent steam temperature, promptly contact a service process. 5, the boiler furnace cause severe fouling and coking of the main steam temperature anomalies can be corrected by an appropriate degree of superheat outlet steam separator start, adjust, and in a timely manner and the furnace heating surface sootblowing. When the platen superheater sootblowing or superheater outlet temperature is still above normal and a secondary reducing water damper fully open, to check the furnace and the combustion air distribution system is normal, the checking process to reduce still overtemperature unit load. 6, flue gas damper adjusted to an appropriate opening degree. 7, if the bottom seal after losing back to normal immediately. 8, to strengthen the turbine expansion, differential expansion, axial displacement of the shaft vibration and bearing temperature monitoring, if abnormal, the process according to the corresponding regulations. 9, after the above measures, if invalid, should immediately drop the load process. 10, in front of the main steam temperature main steam 50 ℃ drastically reduced within 10 minutes, should an emergency stop.
Horizontal steam qualified brown coal hot water szl boiler with a boiler boiler you know take you through a horizontal steam boiler Generally speaking, we use boilers have very many models, according to their different fuels of different works, there are different, the boiler itself institutions, divided into many, the Take the steam boiler, there are still sub-ordinary boilers and steam boilers of it, for this horizontal steam boiler, his characteristics is not the same. Boiler fire resistant concrete arch from ramming. After the arch low and long, and therefore good combustion, flue wings and side wall refractory material sintered brick. Boiler front wall, back wall using a common bricks. Grate air distribution reasonable, the combustion chamber is large, strong coal applicability. Adapt to all types of bituminous coal or anthracite, mixed coal. Full combustion. Since the high temperature flue gas enters the first settling chamber, and then into the wings on both sides of the stack, before the smoke box, smoke and dust so good effect. Water circulation simple, reasonable structure and components under pressure, in the case to ensure water quality, completely safe operation. Combustion equipment for the quick grate, combustion apparatus installed in the manufacturing plant, transported to the site can be directly mounted on a foundation. With a reasonable structure, compact, low consumption of steel, the boiler performance, weight, frame size and capacity of the domestic product has obvious advantages compared. It is a horizontal type boiler quick fire tube boiler, refrigerant natural circulation. The boiler drum from the heat exchange system, the left and right header, composed of the water wall, the main furnace wall with a heating surface, convection tube inner drum portion and the drum.
Internal gas-fired, gas-fired fuel management is equally important for wear to how to do? Detailed examination is the key, fuel management is equally important. We can according to operating conditions, gas-fired, time, planning and reasonable arrangements for wear of the check, when using fuels strict control of particle size into the furnace of coal and limestone particle size of bed material similar to strict customs, qualified brown coal hot water szl boiler waste to be treated before discharge. Want to reduce the impact on the water wall tube may be appropriate to adjust air pressure, air volume, can effectively reduce the wear and tear of the water wall. Maintenance shutdown time is generally in a standby or shutdown, check items include wear the furnace wall, the furnace seals are tight, leak or absence of smoke and the like. In the case of wear was found to be timely repair and welding, to ensure the normal operation of the steam boiler. Generally gas prior to combustion boiler needs to be filled in the combustion chamber fossil fuel, fossil fuel and bed material, the full integration of recycled materials in an air convection wind speed, wind strength and rigidity of the bottom of the apparatus, the inner core region of upwardly movement, the outer annular area of the reflow furnace wall along a downward extension of the coal particles in the furnace residence time, mineral particles, fly ash and flue gas contains a large number of large amounts of fly ash particles causes the waterwall tubes kept fast erosion wear, wear thin wall thickness, resulting in wear and tear.
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