food processing natural gas hot water vacuum boiler

Related problems of food processing hot water vacuum boiler corrosion deactivated 1, deactivate the boiler corrosion damage to the concept of corrosion occurring at the boiler cold standby, hot standby, or during servicing referred to deactivate corrosion. Disable boiler corrosion, primarily because the metal surface is not completely dried during the shutdown and oxygen in the atmosphere continues to leak into the cause. Although the internal and external boiler heating surface corrosion during shutdown occur simultaneously, but internal corrosion is more serious than external corrosion, so corrosion is mainly refers to disable the internal heating surface corrosion. 2, after the cause of corrosion disable shutdown, with decreasing pressure, temperature, boiler water vapor condenses into water, there will be a vacuum inside the boiler, outside air leakage into the furnace, oxygen and moisture vapor case, it is prone to corrosion of metals. Due to the structure of the boiler, if certain measures are not adopted, disabled corrosion is inevitable. Vertical e.g. superheater is not within the water in the superheater drained. When the internal heating surface metal junction with a water-soluble salt scale, will form a high concentration salt solution when it absorbs moisture, so that increased corrosion disabled, and the formation of ulcers corrosion. In this case the inlet of the superheater is often present. Because of the separated saturated steam is always when entering the superheater with a small amount of boiler water, saturated steam into the superheater absorb heat, water is evaporated into steam oven, and the boiler water containing salt is deposited on the inlet tube wall superheater. 3, disable corrosion prevention, mitigation method (1) In order to prevent or mitigate disabled corrosion protection measures should be adopted shutdown. Many shutdown protection methods, mainly divided into two categories: wet and dry protection protection. Wet disable protection commonly used in the short time, for example within one month. Wet common method is to protect the other peroxygen filled in boiler water, or an aqueous solution of alkali, maintaining a pressure of 0.3 ~ 0.5Mpa, to prevent air from leaking into the. (2) If a longer shutdown, or cold weather, in order to prevent freezing equipment, should be protected by a dry method. The method is: After shutdown, the temperature dropped to 70 ~ 80 ℃, the furnace let go all the water, using the water in the boiler will heat the entire heating surface evaporated to dryness, and dried with compressed air furnace without blowing vapor all off-contained anhydrous calcium chloride and then placed in the drum of the container. Per cubic meter of water volume ratio 0.5 ~ 1.0L of calcium chloride was placed (e.g., with lime according to 2kg / m3 basis), then the manhole is closed, periodically checked and found to be replaced when the desiccant into powder. (3) may be filled with nitrogen or ammonia gas charge protection, their preparation and use as a desiccant. Since ammonia is lighter than air, so protection during charging and ammonia, the ammonia gas should enter the upper exhaust air from the lower portion. Nitrogen is slightly lighter than air, can enter the upper portion of nitrogen from the exhaust air from the lower portion. To prevent air from leaking into, the pressure should be maintained 0.3-0.5Mpa, the pressure reduction should replenish ammonia or nitrogen.

Many users in the purchase of the food processing hot water vacuum boiler, the boiler type for "vacuum boiler" always have doubts, do not know what the concept of the boiler, can you use in your enterprise. Fast boiler manufacturers come to tell you about, what the vacuum hot water boiler Yes.

What matters will be selected in Zigong pressure hot water food processing hot water vacuum boiler note of what some consumers in the choice of pressure hot water boiler, due to the skill of experience does not exist, often do not know how to start. Since particularly large series of atmospheric pressure hot water boiler, apart from differences in structure, differences in source manufacturers, should understand how many people are chosen, back to teach the public has little knowledge of some options. First, choose a good pressure hot water boiler, we must know how to construct pressure hot water boiler must be carried out on the equipment in use, installation and commissioning, inspection and maintenance must therefore be reasonable construction must be carried out normally. Second, each will have a certain pressure hot water boiler steam pressure, and for that we will have some wear and tear during use, this unit must be in the selection pressure hot water boiler series pay more attention to summary good intentions come to choose. The first three points are important in a place some pressure hot water boiler using the device, some have excellent secondary effect, can use up a good cost reduction, energy saving. So, in the days of selection pressure hot water boiler, we mentioned above must pay more attention to these matters, so that it can be like to choose a good product, good operation with good use of them. Details of the use of steam boilers should be required to guard against the use of steam boilers are becoming more common, although goods stable, safe operation. But it is not free to say manipulation. Now we come to tell you specifically tell us about some of the considerations when using steam boilers need to be wary of. First, before the boiler boot properly examine previous inspection of steam boilers boot sequence the most important thing, we should need to check where there are many, like the gas load is appropriate, whether to block the smoke pipe is already open, vacuum pumping is normal and so on .. ..... Only ensure normal boot before boiler, gas steam boilers ensure the safety of the entire security operation. Also, stop using the time to stop using the application period is the most prudent use of the sequence, the first fire to turn a small fire, then slowly extinguished, closed burner. Matters gas steam boiler safe use of which we should have so much, and if we can pay special attention to matters so much in use, it should be quite able to be safe to use gas steam boiler, to avoid generating the details of improper use.

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