We take coal-fired electricity production boilers as an example. The start-up sequence is:
(1) Before starting the furnace, close the fire door and the lower ash cleaning door, and open the carbon injection. door.
(2) Place the firewood on the second layer of the upper rack, light the firewood, then turn on the induced draft fan and fan in sequence, and once the firewood burnt, put a layer of coal. (particle size 40---60mm).
(3) After the coal is burned, you can hang the fire from the oven door on the first floor and drop the burning coal from the upper grate to the lower grate to ensure that the upper grates and lower are burned.
It is better to start the oven under the guidance of professionals, because when starting the oven, malfunctions and emergencies are likely to arise.rode. The presence of professionals can better manage emergencies
. Thermal power generation in a certain city consumes a large amount of coal. The technical research team of the thermal power company improved the structure of the furnace, appropriately increased the air inlet volume, and exploded the pulverized coal in the furnace, so that
< p>there has been a cumulative operating time ---- accumulated per hour since it was put into operation, not including the operation shutdown time, it is 100,000 hoursThe other is the schedule operating life, - ----this is 11 years
This is the guaranteed operating life of the design and manufacture of the boiler, this is- i.e. the allowable usage life under normal conditions of installation, operation and maintenance, design material selection, and various calculations are all considered based on this temps,
We will not be responsible for the safety of the boiler beyond this time. Depending on the requirements, once this operating time has been reached, the relevant services will carry out an analysis. comprehensive inspection of the equipment of the furnace body, such as the ball grinding degree of the steel, the relationship between the fire-facing surface of the water-cooled wall and whether the mechanical properties of the unfired surface meet requirements, etc. , determine whether it can continue to be used.
But there are only regulations but no implementation. The main reason is that the deadline has not reached this deadline due to accidents and maintenance (such as improper water treatment). . Surface descaling) Wait until the boiler is damaged and repair it yourself, otherwise the manufacturer will lose responsibility.
Typically, power generation boilers burn pulverized coal. Pulverized coalt be thinner and easier to burn completely. When starting the oven, you must use diesel to maintain combustion. Once the oven temperature increases, spray it. coal for heating. The air volume and the amount of air entering the oven must be adjusted. The amount of coal is directly proportional if the inlet air is used to explode the pulverized coal in the furnace. the oven temperature is not high enough. The pulverized coal has not been completely burned when it is pulverized into the boiler furnace and falls. The lower side wind should be increased to form a spiral wind. Increase the landing time of the pulverized coal to allow it to do this. burn completely. Of course, there are other reasons, such as boiler structure, wind temperature, nozzle structure, ash removal device, etc.