How is the operation of a sintering waste heat boiler optimized?
Along with the continuous progress of society, the economy has been developed at a high speed, people's living standards have been greatly improved, the construction industry continues to rise, the rise of the construction industry for the development of the sinter plant provides a rare opportunity, in the daily operation and management of the sinter plant, the important thing is the boiler, and today's era, the sinter plant has been using the waste heat boiler, this kind of boiler can save the operation cost fundamentally and create more benefits for the plant. Create greater benefits, however, the use of sintering waste heat boiler has a lot of need for our attention, the following, for the sintering plant waste heat boiler in the daily operation of the problem, analysis of its causes, optimization of its methods, explore the optimization of the operation of the sintering waste heat boiler measures.Optimization measures of sintering waste heat boiler operation
(I) Optimization measures of starting furnace
Sintering plant waste heat boiler shutdown and startup process has always been an unstable process, due to the complexity of the sintering waste heat boiler's own working condition changes, there are a variety of contradictions in the change of conditions, such as: sintering waste heat boiler in the operation of the process of the temperature of each part of the boiler as well as the pressure is produced in the momentary changes in the pressure is also a big change in the heating surface of the sintering waste heat boiler itself, the internal mass flow reliability, sintering waste heat boiler heating surface has its own internal mass flow reliability, and the sintering waste heat boiler has its own internal mass flow reliability. Reliability of the flow, the length of time and the cost of starting and stopping the sintered waste heat boiler can be summarized as the two main issues of economy and safety.
Starting the sintering waste heat boiler requires us to start the sintering waste heat boiler fluid coupling own lubricating oil system front pump, so that we can well prevent in the initial stage of startup, sintering waste heat boiler fluid coupling input speed is low this kind of situation generated by the phenomenon of burning tile. Then we have to start the motor, the input speed of the fluid coupling is increasing, the first low-temperature flue gas, and then high-temperature flue gas. In the circulating fan outlet wind pressure is insufficient phenomenon, we are required to first from the bypass chimney will be flue gas exclusion, in the outlet wind pressure can be blown on the ring cooler this requirement is met, the flue gas will be sent to the ring cooler. In the sintering waste heat boiler pressure and temperature, we should adhere to the first slow, then fast, then slow this kind of principle to implement, that is to say, we start the sintering waste heat boiler when we start, to use a relatively slow rate of rise, and then reduce the initial thermal stress, and then will gradually strengthen the rate of rise, in the near end of the start-up time, we will rise the rate of a very good reduction. This kind of first slow, then fast, then slow measures, can be life loss rate is well met, and on this basis, fine sintering waste heat boiler startup time is effectively accelerated.
(ii) Optimization measures for furnace shutdown
Sintering waste heat boiler furnace shutdown process and sintering waste heat boiler furnace start-up process is the opposite of the process, want to stop the furnace, we are required to gradually sintering waste heat boiler inlet flue gas valves to reduce, circulating fan speed should also be slowly reduced, in the process of stopping the furnace, I have to pay attention to the following points: we have to wait until after the start of the replacement of the cooling fan and then reduce the circulating fan speed is very good, so that can effectively prevent the emergence of ring Cooling machine cooling the phenomenon of insufficient; we have to open the flue gas discharge valve in time, so that we can effectively prevent the ring cooler hood inside the positive pressure is too large phenomenon; in the sintering waste heat boiler circulating fan to reach the minimum speed before the request that we have to start the hydraulic coupling pump before a good start, so that we can effectively prevent the emergence of burning tile; in the circulating fan after the shutdown, we have to sintering waste heat After the circulating fan is out of service, we should close the flue gas valve at the entrance of the sintering waste heat boiler in order to ensure that the sintering waste heat boiler can realize the pressure preservation and heat preservation, and close the inlet valve of the circulating fan to effectively prevent the bending phenomenon of the circulating fan spindle caused by the hot flue gas of the sintering waste heat boiler due to uneven heating.
