In the operation of oil and gas boilers, the drum (shell) contains and maintains a certain amount of water, which can make the steam pressure and boiler water level relatively stable, and is also conducive to the natural circulation of the boiler and the separation of steam and water, which is the basic condition to ensure the safe operation of the boiler .

If there is a serious water shortage in the oil and gas boiler, the tube on the heating surface of the boiler will be overheated and deformed or even burned; the tube bulge leaks and the expanded tube falls off; the steel on the heating surface is overheated or overburned, reducing or losing the bearing capacity Blasting; damage to the furnace wall, etc., if improperly handled, it will lead to more terrible consequences.

Zhengzhou Fangkuai Boiler Factory summarized the following more common causes of water shortage in oil-fired gas steam boilers for your reference:
       1. Operators are negligent and lax on water level monitoring;
       2. After the boiler is blown, the blowdown valve is not closed or closed, or the blowdown valve is leaking;
      　 3. The water supply equipment or water supply pipeline fails, which reduces or interrupts the water supply;
      　　 4. The steam and water connecting pipes of the water level gauge are blocked, the cock leaks or other reasons form a false water level; 5. Blasting of boiler water walls, convection tube bundles, economizer tubes or smoke tubes to release water vapor.

Oil and gas boilers are widely used in food, printing and dyeing, chemical, pharmaceutical and other industries, and are currently heat energy supply equipment that meets national environmental protection requirements. As a mechanical equipment, it needs good maintenance to extend its life. Before maintaining the boiler, it is necessary to know the names of various parts, the names and positions of various professional terms.

The heated surface, as the name suggests, is the place to receive and transfer heat. In the oil and gas boiler equipment, the heating surface refers to the interface that absorbs heat from the exothermic medium and transfers it to the heating medium, including convective heating surface and radiant heating surface.

1. Radiant heating surface
       The heating surface that absorbs heat from the heat-releasing medium mainly by means of radiation heat exchange, and the heating surface that absorbs heat from the heat-releasing medium mainly by means of radiation heat exchange. Such as water-cooled wall pipes, furnace bladder, etc.

2. Convection heating surface
       The heating surface that absorbs heat from the high-temperature flue gas by means of convective heat exchange usually refers to the heating surface through which the flue gas passes, such as flue, convection tube bundle, etc.

I believe that whether you are purchasing a hot water boiler or a steam boiler, the technicians will repeatedly emphasize that the water entering the boiler must be soft water after water treatment. Why do you say this? Let the technical engineers of Zhengzhou Fangkuai Boiler Factory answer for you.

If you put hard water, that is, ordinary water into the boiler, it is very easy to scale. Because the steam is constantly evaporating, it will cause the calcium, magnesium, and impurity concentration in the boiler water to be very high, which is 30-50 times that of natural water. The rate of scaling is very alarming. It may not take half a year to a year. There can be 1-2mm scaling. For boiler equipment, scale is extremely harmful, and in severe cases, it can also threaten the safe operation of the boiler.

After the appearance of scale, the thermal conductivity is only less than 0.5% of metal. After the appearance of boiler scaling, if the thermal efficiency is to be achieved without scale, the only way to increase the temperature of the heating surface inside the boiler, for example: when the furnace wall temperature is 250℃, When the scale is 1mm, if you want to achieve the same thermal efficiency, the wall temperature must be increased to 650°C. At this time, the heat absorption rate is extremely low, the energy consumption increases, and the fuel cost doubles.

It can be seen that, no matter from a safety or economic point of view, boiler water must be used in accordance with the use specifications and can only be used after water treatment.

For users and friends who need to use steam boilers, boiler thermal efficiency and steam quality directly affect production volume and production costs. Choosing a high-quality and efficient steam boiler can fundamentally reduce operating costs and improve benefits for enterprises. So how to effectively improve the quality of steam produced by the steam boiler? Let the technical engineers of Zhengzhou Fangkuai boiler manufacturer answer for you free of charge.

For steam boilers, steam quality refers to the degree of cleanliness of the steam, which is usually expressed by the total amount of impurities contained in the unit mass of steam; the steam contains various salts, alkalis and oxides and other impurities, and the main part is salt. In the same way, too much impurities in the steam will cause problems such as the surface of the superheater, the flow part of the steam turbine and the salt deposit in the steam pipe.

From the above analysis, we can see that in order to improve the steam quality, the salt content of the boiler water must be strictly controlled. At the same time, attention should be paid to the control of the dissolved salt in the steam and the saturated steam with water to obtain the clean steam required for the operation of the boiler. In order to reduce saturated steam with water, good steam-water separation conditions should be established and a perfect steam-water separation device should be adopted. In order to reduce the dissolved salt in the steam, the alkalinity of the boiler water can be appropriately controlled and a steam cleaning device can be used; in order to reduce the salt content of the boiler water, methods can be adopted to improve the quality of the feed water, perform boiler blowdown, and use segmented steam.

The hourly cost of the 6-ton steam boiler includes fuel costs, water, electricity, etc. The consumption of water and electricity is relatively small, which can be ignored here, and the focus is on the level of fuel costs. The main factor that affects fuel costs is the operating cost of the boiler.

The 6-ton steam boiler launched by Zhengzhou Fangkuai Boiler Factory adopts wing energy-saving technology, and its operating efficiency per hour can reach more than 98%. It ranks in the forefront of the entire boiler market, so the cost per hour is also very low, which is very popular among users. . At present, the hourly cost of this type of boiler is around US$70.

Zhengzhou Fangkuai Boiler Factory is here to remind everyone that sometimes steam boilers will produce uneven heat during operation. The specific reasons may be as follows:

Thermal unevenness is the phenomenon of uneven thermal load in the same heating surface tube group. Thermal unevenness can be caused not only by structural characteristics, but also by boiler operating conditions. Such as the uneven distribution of smoke temperature and smoke velocity along the width of the flue; the uneven plane or uneven spacing of the serpentine tubes on the heating surface causes the flue gas corridor; the accumulation of ash, slagging on the heating surface, and the deflection of the furnace flame center; Poor adjustment of the running operation will cause the flame to deflect, move down, and raise, etc., which will cause uneven heat.
       (L) Ensure that the steam parameters reach the rated and stable operation.
       (2) Ensure that the fire is stable, the combustion center is appropriate, the flame is evenly distributed, and the equipment is not burned out, so as to avoid ash accumulation and coking.
       (3) Make the boiler and unit operate safely under the most economical conditions.

Steam boilers are often used as power equipment, or output high-temperature steam directly involved in manufacturing, especially in industrial industries with a very high frequency of use. The 12-ton steam boiler is a medium-sized boiler. Before using this type of boiler, many users are very interested in the hourly operating cost of the boiler. Let the technical engineer of Zhengzhou Fangkuai Boiler Factory calculate it for you.

As the name suggests, the 12-ton steam boiler can output 12 tons of high-temperature steam per hour. At present, the hourly operating cost of this type of steam boiler on the market is around 3000-4000 yuan, while the operating efficiency of the steam boiler launched by Zhengzhou Fangkuai Boiler Factory can reach more than 98%, and the hourly operating cost can be controlled at 2600 yuan, which is very energy-efficient. save money.

In addition, when purchasing a steam boiler, everyone should pay attention to the heat storage capacity, because this data will have a significant impact on the operation and regulation of the boiler.

When the external load changes, the temperature and heat of the working fluid and metal in the boiler will change. If the load increases and the vapor pressure drops when the combustion ends in a timely manner, the corresponding saturation temperature will decrease, and the liquid heat of the pot water will decrease accordingly. At this time, the pot water and the heat storage in the metal will cause part of the pot water to vaporize and become steam. The production of these additional evaporation can play a role in slowing down the vapor pressure drop. Therefore, the greater the heat storage capacity, the slower the vapor pressure drops. On the contrary, when the combustion conditions remain unchanged and the load decreases and the vapor pressure rises, due to the increase in the saturation temperature, the working fluid and the metal will store part of the heat, which slows down the rise in the vapor pressure. Therefore, the heat storage capacity of the boiler is beneficial to the stability of operating parameters. However, when the boiler adjustment needs to actively change the working conditions to change the combustion rate, the load, pressure, and temperature of the boiler are slow to change due to the heat storage capacity, and cannot quickly adapt to the requirements of the changing working conditions.

The 20-ton gas-fired steam boiler is a medium-sized boiler equipment, commonly found in industrial industries, such as building materials factories, fertilizer factories, glass factories, etc. Considering that this type of boiler is not a small equipment, and the cost of consumption is relatively high, users and friends are more concerned about it. The technical engineers of Zhengzhou Fangkuai Boiler Factory will come to calculate for everyone.

The main factors that affect the cost of the 20-ton gas-fired steam boiler are water and electricity, sewage, and fuel costs. Fuel costs are the key expenditure and affect the consumption cost of the entire boiler. The hourly operating cost of the 20-ton gas-fired steam boiler launched by Zhengzhou Fangkuai Boiler Factory is around US$700. If everyone maintains the boiler properly, the operating cost will be reduced.

At the same time, everyone should also pay attention to prevent uneven heating of steam boilers.

The uneven thermal power of the boiler is the phenomenon of uneven thermal load in the same heating surface tube group. Thermal unevenness can be caused by structural characteristics as well as operating conditions. Such as the uneven distribution of smoke temperature and smoke velocity along the width of the flue; the uneven plane or uneven spacing of the serpentine tubes on the heating surface causes the flue gas corridor; the accumulation of ash, slagging on the heating surface, and the deflection of the furnace flame center; Poor adjustment of the running operation will cause the flame to deflect, move down, and raise, etc., which will cause uneven heat.
       (1) Ensure that the steam parameters reach the rated and stable operation.
       (2) Ensure that the fire is stable, the combustion center is appropriate, the flame is evenly distributed, and the equipment is not burned out, so as to avoid ash accumulation and coking.
       (3) Make the boiler and unit operate safely under the most economical conditions.

Oil-fired and gas-fired boilers refer to boiler equipment that can use oil fuels or gas fuels. Today, my country's environmental protection requirements are becoming more stringent, and it is deeply loved by users, and the frequency of use is also increasing year by year. So, what is the cost of this type of boiler? Zhengzhou Fangkuai Boiler Factory takes a 15-ton fuel and gas boiler as an example to explain to everyone.

The operating cost of a 15-ton oil-fired gas boiler includes water and electricity, fuel, sewage, and maintenance costs. Fuel costs are key expenditures and account for more than 80% of the operating costs. The operating efficiency of the oil and gas boilers launched by Zhengzhou Fangkuai Boiler Factory is generally above 98%. This data is among the best in the entire boiler market. It can be said to be very energy-saving, so the cost is also very low. Around 450 dollars.

Zhengzhou Fangkuai Boiler Factory would like to remind everyone here that during the operation of the boiler, the stability of the primary and secondary steam temperature must be controlled.

Controlling the stable primary and secondary steam temperature during boiler operation is extremely important for the safe and economic operation of the unit. When the steam temperature is too high, the strength of some metals such as superheaters, reheaters, steam pipes, steam turbine cylinders, and rotors will be reduced, which will shorten the service life of the equipment. When the temperature is severely overheated, the heating surface tube will burst. If the steam temperature is too low, the efficiency of the thermal cycle will be affected, and the steam humidity at the non-stage blades of the steam turbine will be too high. In severe cases, water hammer may occur, causing blade breakage and damage. If the steam temperature rises and drops by a large margin, in addition to generating greater thermal stress on the welding joints and connecting parts of the heating surface of the boiler, it will also cause the relative displacement between the cylinder and the rotor of the steam turbine to increase, that is, the expansion difference will increase. Even dynamic and static friction between the impeller and the baffle occurs, causing severe vibration. In addition, the excessive deviation of the steam temperature on both sides of the steam turbine will cause uneven heating and uneven thermal expansion on both sides of the steam turbine. Therefore, the steam temperature should be closely monitored, analyzed, and adjusted during the operation of the boiler, and the most reasonable method should be used to control the stability of the steam temperature.

Oil and gas dual-purpose boiler equipment refers to boiler equipment that can use both gas fuel and oil fuel. The boiler has a very wide adaptability to fuel. It can be used normally in most areas of my country, and there is basically no geographical restriction. Therefore, it has also been loved and recognized by many customers. The 8 ton oil and gas dual-purpose boiler is a medium-sized boiler, which can be used in many industries such as food processing, chemical production, construction and building materials. The operating cost of the boiler is a problem that many users care about. Today, Zhengzhou Fangkuai Boiler Factory is here for everyone. answer.

The 8-ton oil-gas dual-purpose boiler is divided into steam boiler and hot water boiler according to the difference of output medium. There are some slight differences in operating cost between the two. The most important part of the boiler operating cost lies in the fuel input, and the amount of fuel input mainly depends on the operating efficiency of the boiler. The higher the efficiency and the less fuel used, the more energy and money will be saved.

At present, the operating efficiency of the oil and gas dual-use boiler equipment launched by Zhengzhou Fangkuai Boiler Factory is generally above 98%, which is a lot higher than the ordinary boilers on the market. It can be said to be very energy-saving, so the operating cost is also very low. Control it at around $300.

Oil and gas dual-purpose steam boilers are used in many industries. The boiler has a wide range of adaptability to fuels and is very easy to retrieve across the country. Moreover, due to the environmental protection characteristics of the fuel, the control of pollutant emissions is very low, which is also in line with my country Current environmental requirements. The hourly fuel consumption data of a 2 ton oil-gas dual-purpose steam boiler is a question that many users are more concerned about. Zhengzhou Fangkuai Boiler Factory will answer for everyone.

Fuel consumption is the main factor that affects the operating cost of the boiler. The higher the fuel consumption, the less energy-saving the boiler, and the more expensive it is, which is harmful to the enterprise. The main factor that affects fuel consumption is the operating efficiency of the boiler. At present, the operating efficiency of most steam boilers on the market is around 60-70%, while the steam boiler equipment launched by Zhengzhou Fangkuai Boiler Factory uses condensation, FGR, etc. This energy-saving and environmentally-friendly technology increases the operating efficiency of the boiler to more than 98%, which is much higher than that of ordinary boilers, so the energy-saving effect is also very significant. The hourly fuel consumption of a 2 ton oil-gas dual-purpose steam boiler can be controlled at about 140 cubic meters per natural gas.

The 4-ton oil-gas dual-purpose boiler can use either oil fuel or gas fuel. The requirements for fuel adaptability are very low, and it can be used normally in any region of our country. Many users are very interested in the hourly operating cost of the boiler, which is related to the investment cost of the boiler. Zhengzhou Fangkuai Boiler Factory is here to answer everyone.

At present, the thermal efficiency of the 4-ton oil-gas dual-purpose boiler launched by Zhengzhou Fangkuai Boiler Factory can reach more than 98%, which is at least 10% higher than ordinary boilers on the market. It can be said to be very energy-saving, so it runs every hour. The cost is also very low and can be controlled at around 45meijin. Of course, the specific cost depends on the actual usage of the user.

Everyone knows the importance of thermal efficiency to boiler energy consumption. What are the reasons for the low efficiency of boiler operation? Zhengzhou Fangkuai Boiler Factory gave the answer.

The main causes of boiler thermal efficiency problems are: high exhaust gas temperature; low soot blower input rate; large ash and slag combustible materials; excessive or small boiler oxygen; large heat loss; large air preheater leakage rate; high quality of steam and water Poor; The equipment has defects and is forced to run with reduced parameters.

The main measures to solve the above problems are: reduce the exhaust gas temperature; eliminate soot blower defects in time and increase the soot blower input rate; reduce fly ash combustibles and slag combustibles; control boiler oxygen content; reduce heat loss; reduce air preheating Heater air leakage rate; control the fineness of coal to be qualified; improve the quality of steam and water; adjust the layout of the heating surface of the boiler according to the situation; modify the burner if necessary to make it suitable for gas fuel.

A 1 ton gas-fired steam boiler refers to a steam boiler equipment with an output of 1 ton of steam per hour. Due to the use of gas fuel as the main fuel, it not only guarantees high operating efficiency, but also has excellent environmental performance, which is sustainable with our country’s persistence. The development route coincides with each other, so it has also been vigorously promoted by the relevant departments. Many users are more concerned about the price of 1 ton gas-fired steam boiler in the current market, and Zhengzhou Fangkuai Boiler Factory will come to answer for everyone.

Taking into account the differences in the design structure, pollutant emissions and other parameters of the 1-ton gas-fired steam boiler equipment introduced by each boiler manufacturer, the price of the boiler also fluctuates to a certain extent, but generally speaking, the high-quality 1-ton gas The market price of steam boilers is around US$10,000.

Here, the technical engineer of Zhengzhou Fangkuai Boiler Factory would like to remind everyone of the relevant matters that need to be paid attention to when starting the boiler fan.
       (1) Before starting the fan, the fan inlet adjusting damper should be closed tightly to prevent misoperation and start with load.
       (2) Check whether the lubricating oil level of the bearing is normal, the water supply of the cooling water pipe, whether the coupling is intact, and whether the inspection hole is closed.
       (3) Pay attention to whether the starting time and no-load current are normal.
       (4) After the ammeter indicates to return to the no-load current, the opening of the air door can be adjusted at an appropriate position.
       (5) Check the operation of the fan, and there should be no abnormality.