Natural gas fired Industrial 2 Ton Steam Boiler
In early November, the annual "Technology Innovation Award" announced by the Chinese Ministry of Science and Technology Venture Association. Fast Boiler Co., Ltd. With strong R & D strength and strong R & D hardware infrastructure was awarded The "Technology Innovation Award (business)," the honorary title.
If you know a little about chemistry, you may know that the sulfur content of oil and coal is roughly equal, but ask what low-temperature corrosion of oil-fired boilers is much more serious than coal-fired boilers, for two main reasons:
1. 90% of ash in coal-fired boiler, especially coal powder furnace, is taken away by flue gas, sulphuric acid steam formed in flue gas is absorbed by fly ash in flue gas, so that sulfuric acid vapor in flue gas is reduced, and about half of sulfur remains in ash when coal is burned. When the oil is burning, the sulfur content in the fuel almost all changes to the ash in the SO2, fuel, the fly ash in the flue gas is very little, and the adsorption ability to the sulphuric acid vapor in the flue gas is very weak.
2. The hydrogen content of oil in the oil-fired boiler is about 11%-12%. The combustion of each ton of fuel oil can produce about 1 ton of water vapor, and the partial pressure of steam in the flue gas is higher than that in the case of coal-burning.
What kind of fuel and industrial applications in the bath kind of boiler: the boiler, which is related to learning, the following, which will start with some difficult problems, to initiate and conduct specific, that is, to carry out this important product Q & A site solution confusion, thus, to advance their learning process and accelerate learning, so you can let all of you to progress further and, at the same time, to increase the amount of their own knowledge in this area. 1. boiler, the steam can produce one ton of water how much? If the boiler is used in bathing areas, then, is what fuels to use, better? Boiler, steam can produce one ton of water volume, mainly related to boiler design, boiler parameters, power boilers and boiler emissions of these four, so light so ask, the answer is not good, can not give specific value. As for question two, the boiler in the box view, the use of clean energy, such as electricity, natural gas or fuel oil, etc., is more appropriate. And coal, may bring pollution problems, not green. 2. boiler, which is used in the industrial field, it is generally what kinds there?
In the national standard of water quality standard, the water quality index of hot water boiler stipulates that the total hardness of water supply for chemical treatment outside furnace is less than 0.6 mmol / L. In recent years, in order to reduce the operating cost of heating units, some hot water gas-fired fired industrial 2 ton steam boilers have been overloaded due to the use of class Ⅲ bituminous coal as fuel instead of class Ⅱ bituminous coal designed to replace the designed type Ⅱ bituminous coal. During the maintenance in summer, it is found that the overloading boiler water wall tube fouling problem is more prominent, some boilers even occur tube burst accident. Why is heating hot water boiler overloaded, scale and even burst tube? Because the calorific value of class Ⅲ bituminous coal is higher, the type Ⅲ bituminous coal of the same weight is burned instead of the designed class Ⅱ bituminous coal. Bituminous coal increases the circulation of boiler riser is not absolute equilibrium, the geometric difference of riser and the heat load are different, so there is inevitably the deviation of flow rate between the risers. Due to the overloading operation of the boiler, some riser tubes are easy to overheat boiling because the flow rate is small, and the wall temperature is higher than the designed wall temperature, so that the scale and even the tube burst are easy to occur. How to prevent the boiler from scaling when overloaded? The heating hot water boiler operates under overload because of the scaling after the superheated boiling. Steam is produced in the process of superheated boiling. The water quality requirement of gas steam boiler is less than 0.03 mmol / L, which is much lower than that of hot water boiler. Water quality requirements. Based on the above reasons, the feed water hardness of heating hot water boiler is reduced, and the scaling phenomenon is eliminated by reducing 0.6mmol/L to 0.03mmol/L.