Atmospheric pressure hot water boiler is a category of boiler equipment. The interior is of atmospheric pressure structure, basically there is no risk of use, and the safety factor is relatively high. So, if this type of hot water boiler is installed and used, do you need to report to the relevant departments and submit materials? Zhengzhou Fangkui Boiler Company will answer your questions.

For boilers such as atmospheric hot water boilers, whether they need to be reported for installation depends on the capacity of the boiler. If it is less than 300,000 kcal, it is not necessary to install the registration; if it is more than 300,000 kcal, it is necessary to report.

However, from the current form, this provision is not static, depending on the policy situation in each region.

The requirements for the height of the boiler during the installation of the boiler are mentioned in the "Boiler Air Pollutant Emission Standard", specifically speaking: the lower limit of the chimney height should be determined according to the total capacity of the boiler room, but the basic The requirement is to be higher than the height of the building. If the boiler capacity is above 28MW, it should be comprehensively considered based on environmental and other factors.

When it is found that the water level cannot be seen through the water level gauge in the boiler, it is possible to perform the flushing work to determine whether the water is lacking or full, and then take effective measures to solve the problem.

Oil-fired hot water boiler is a type of boiler that can output high-temperature hot water. In terms of pressure division, there are normal pressure, negative pressure and pressure. Generally speaking, if it is heating and heating, it is enough to use atmospheric pressure oil-fired hot water boiler, which can not only reach the required temperature, but also ensure safety.

Atmospheric pressure oil-fired hot water boiler adopts atmospheric design in the structural design, and the top of the boiler is provided with an atmospheric hole. The internal pressure is always balanced with the external pressure, so that the danger of explosion can be avoided.

In addition, the furnace body of the boiler adopts computer optimization simulation design in order to optimize its size, get a good appearance and shape, and also save a lot of floor space.

The use of glass wool in the oil-fired hot water boiler is used for the whole-body insulation, which has better insulation effect. The advantages of glass wool are light weight and small heat loss, so its thermal insulation effect is very good.

The main components of the atmospheric fuel oil hot water boiler are the fuel oil burner, the boiler controller and the hot water circulation pump, which are very important and indispensable.

The scope of application of the fuel gas vacuum hot water boiler in the fuel oil hot water boiler is generally on the heat source of heating load, ventilation and air conditioning heat load. Especially, when it needs to be installed in a building, it is very suitable to use this kind of boiler, and it also has good use effect.

Recently, Zhengzhou Fangkuai Boiler Company has received many inquiries from users who want to purchase hot water boilers. For example, how does a hot water boiler achieve energy-saving operation? Why should the economizer and recirculation door be closed when the boiler is filled with water? In addition, what is the phosphate treatment of boiler feed water? Today, our technical engineers are here to answer questions for everyone.

The energy-saving operation of the hot water boiler is specifically reflected in: the heating temperature of the boiler can be very low, and the outlet temperature is in the range of 110-150 ℃. In the boiler heating process, all are sensible heat parts and no latent heat parts. In addition, the exhaust temperature of the boiler is low, so that the heat loss is small.

Why should the economizer and recirculation door be closed when the boiler is filled with water?

This is because when the boiler is started or shut down, it is sometimes for intermittent water supply, which plays a certain role in protecting the energy-saving device. At this time, the circulation door must be closed, otherwise the effect of protecting the economizer cannot be achieved. In addition, if the recirculation door is not closed during the process from the boiler to normal operation, it will affect the boiler steam quality, and there will be some other effects.

How to correctly understand the phosphate treatment in boiler feed water?

The phosphate treatment of boiler feed water is simply to add phosphate to the boiler feed water. In this way, scale will not form in the boiler, but water slag will be generated and can be discharged through the boiler blowdown, thus avoiding the boiler The problem of rust corrosion.

The gas-fired steam boiler is a star product of Zhengzhou Fangkui Boiler Factory. As for why it sells very well, it is mainly related to the performance advantages of the boiler itself. However, many users still have some doubts when operating this type of boiler. Today, Zhengzhou Fangkui Boiler Company will come to answer them one by one.

What is the role of circulating water in gas steam boilers?

In a boiler such as a gas-fired steam boiler, the purpose of circulating water inside is to allow the heating surface of the boiler to be evenly heated, so that the heat energy can be effectively transferred to the heat medium, and then the boiler can generate steam.

Are there any requirements for the feed water temperature of gas steam boilers?

Regarding the feed water temperature of gas-fired steam boilers, there are currently no regulations in this regard, which are generally determined based on actual conditions and deaeration conditions.

What is the difference between two-pass and three-pass in gas steam boilers?

In the gas-fired steam boiler, the second return stroke means that the boiler is not provided with a second return stroke smoke tube, etc., and the flue gas in the furnace is from front to back. The three-pass means that the flue gas is discharged from the boiler after the heat is transferred from the furnace, the two-pass smoke pipe and the three-pass. This is the difference between them.

Is there a difference between the theoretical and practical gas consumption of a 0.3-ton gas-fired steam boiler per hour?

A 0.3 ton gas steam boiler is a 0.3 ton gas steam boiler. The theoretical value of gas consumption per hour is about 21 cubic meters, but in actual operation, it will be lower than this value. As for the specific data, it depends on the actual Situation.

The flue gas temperature can directly reflect the operating status of a gas-fired hot water boiler. As for why this is so, Zhengzhou Fangkui Boiler Company gives a clear answer.

Many users will have such a doubt, whether there are upper and lower limits on the exhaust gas temperature of gas hot water boilers?

In this regard, from the current perspective, there are no regulations in this regard, but there are still some requirements in the entire boiler industry. Because the flue gas temperature will directly or indirectly affect the operating efficiency of the boiler, resulting in a situation of energy-saving operation or non-energy-saving operation. We need to pay attention to that there is an inverse relationship between the flue gas temperature and efficiency of the boiler. The higher the boiler exhaust temperature, the lower the efficiency, and the less energy-saving.

What methods can be used to combine gas hot water boiler with solar energy system?

If the gas-fired hot water boiler is combined with the solar energy system, the main ways to combine them are the following.

Method 1: The control cabinet in the solar system controls the start and stop of the circulating pump according to the water temperature and temperature, and there is a water flow switch on the boiler, which starts the boiler when the water flows and performs circulating heating.

Method 2: Install a temperature probe in the water tank. When the temperature is lower than the set value, turn on the circulating pump and the boiler for circulating heating.

Method 3: If the boiler is a direct-heating structure, the water in the water tank can be directly used by heating the boiler once.

Can gas condensers be used in gas-fired hot water boilers?

Flue gas condensers can be used in gas hot water boilers, but pay attention to the installation location, which should be directly connected to the return water pipeline. In fact, it can also be considered that an energy-saving device is added to the boiler, so as to improve the inlet temperature and thermal efficiency of the boiler.

Industrial boilers are very useful in all walks of life and can be said to be an indispensable device. So, are there any requirements for the internal temperature during the operation of industrial boilers? Let's take a look at what Zhengzhou Fangkuai boiler manufacturers say.

If it is an industrial hot water boiler with a boiler capacity of 2.8MW, it means that the heating capacity or heat supply of the boiler is 2.8MW, that is, the heat output per hour is 2.8MW. If converted into a steam boiler, it should be 4 tons in tonnage.

In order to use industrial boilers normally, what certificates are required?

For the use of industrial boilers, the certificates they must have are mainly product certification, boiler use registration certificate, and boiler annual inspection report certification, which are indispensable.

Are there any requirements for the internal temperature of industrial boilers?

As for the internal temperature of industrial boilers, generally speaking, it should be higher than the dew point temperature of sulfuric acid in the flue gas. In theory, it should be higher than 20-30 ℃.

What are the requirements for industrial boilers to be tested for hydrostatic pressure?

The ambient temperature of the hydrostatic test cannot be less than 50 ° C. If it is less than 50 ° C, anti-freezing measures are required. And the water used should be clean water. The water temperature should be higher than the surrounding dew point temperature, but it should not be too high to avoid excessive temperature difference stress or vaporization.

The safe operation of industrial boilers is very important, because once the industrial boiler fails, it is very easy to cause an explosion, which will cause loss of personnel and property. Mastering the correct operation method is an important way to ensure the safe use of industrial boilers, so mastering some emergency treatment methods in the face of sudden boiler conditions to prevent failures from becoming accidents is the guarantee of the safe operation of the boiler.

1. Industrial boiler overpressure accident
       Overpressure accidents are accidents caused by the actual pressure in the boiler exceeding the maximum working pressure during the use of the boiler, which is a relatively common boiler accident. The main reasons for the overpressure accident of the boiler are: the failure of the gas-using equipment to fail to use the gas normally; the failure of the safety valve and the failure of the alarm instrument; because of the defects involved in the boiler, the exhaust cross-sectional area of ​​the safety valve was not adjusted when the pressure was reduced The original safety valve is still used.
       In the face of overpressure accidents, we must first reduce the combustion; if the boiler safety valve repair works normally, we must first take manual exhaust, or open the vent valve on the boiler for exhaust to adjust the pressure of the boiler and maintain the boiler. The internal water level is normal.

2. Industrial boiler water shortage accident
       The water shortage accident is mainly due to the water level in the boiler being lower than the safe water level. The lack of water in the boiler will often lead to overheating of the heating surface of the boiler, resulting in deformation or even wave trains; the bulging or shedding or leakage; the boiler wall is damaged.
       Before dealing with boiler water shortage accidents, it is necessary to judge the severity of the accidents and then select a reasonable solution. In judging the severity of the accident, the method called "water" is used. The specific work flow is to open the discharge cock for the watch, rinse the water vapor connecting pipe and the water connecting pipe, close the standard steam connecting pipe cock, and close the water discharging cock at the same time. If the degree of boiler water shortage cannot be accurately grasped, the boiler cannot be watered, so as not to cause a boiler explosion accident.

3. Industrial boiler full water accident
       The boiler full water accident is mainly caused by the water level in the boiler being higher than the highest scale of the water level meter, which will cause a large amount of water in the steam, which will cause water hammer in the steam pipeline; Gas supply will also be affected.
       To deal with the boiler full water accident, the water level meter should be compared and flushed, and the water level meter should be checked for failures in time; when the boiler is full of water, the boiler feed water valve should be closed in time, the boiler water supply operation should be stopped, and the boiler combustion should be reduced in time. Boilers with economizers must also open the economizer's circulation valve, and open the drain valve, steam pipeline, and superheater trap.

Flue gas will be emitted during the operation of industrial boilers. At this stage, China has strict standards for the flue gas emissions of boilers, which is closely related to environmental protection. Industrial boilers with flue gas emissions that do not meet the standard cannot operate normally and need to be shut down. Only through boiler renovation or re-purchase.

The use of industrial boilers can be controlled at a very low price through transformation, and the trouble of repurchasing new boilers can also be eliminated. Zhengzhou Fangkui Boiler Factory helps everyone understand how industrial boilers have completed low-nitrogen environmental protection transformation through an example of the transformation of an enterprise's industrial boilers.

The boiler model is SHL35-2.45-AII boiler. During the operation process, the effect of the dust collector cannot reach the industrial boiler flue gas emission standard, and the emission cannot be achieved. Due to the continuous improvement of the environmental protection standards for desulfurization, denitrification and dedusting of industrial boilers, the technical reformation of desulfurization and dedusting of existing boiler dedusting equipment is required, so that the smoke and sulfur dioxide emissions in the boiler flue gas meet the relevant national environmental protection requirements.

This boiler reform follows the control requirements that meet the environmental emission standards of industrial boilers; choose mature and reliable dust removal and desulfurization processes; the operation of the dust removal and desulfurization system does not affect the operation and operation of the original production equipment, and ensure the safe and stable operation of the boiler system; management Convenient maintenance; combined with the existing plant and equipment, make full use of the original equipment and system, reasonable layout, small footprint, meet the overall system and site layout requirements; overall consideration of dust removal, desulfurization, and denitrification transformation, after the transformation must not be implemented in the future The principle of the impact of the denitrification renovation project.

After the transformation of the flue gas system and desulfurization tower system is completed, the current flue gas emissions of the boiler are: sulfur dioxide emission concentration ≤160mg / Nm³; smoke dust emission concentration ≤30mg / Nm³; flue gas Ringerman blackness is 0 -Level 1. When the dust concentration at the inlet of the dust collector is ≥4000mg / Nm³; when the concentration of sulfur dioxide is ≥3000mg / Nm³, the dust removal efficiency is ≥99.5% and the desulfurization efficiency is ≥95%.

After the transformation of the industrial boiler, the environmental protection department must also apply to the environmental protection department for acceptance monitoring and evaluation according to the acceptance level of the environmental protection project.

Induced draft fans have important applications in industrial boiler systems, which can increase gas pressure and discharge gas. Once the induced fan has abnormal noise and other failures, it is very likely to endanger the normal operation of the boiler. We need to analyze the abnormal vibration machine of the induced draft fan and take effective measures to cope with it to provide guarantee for the normal operation of industrial boilers.

First of all, it is necessary to analyze the cause of the induced fan vibration. The causes of induced fan vibration mainly include vibration of motor, induced fan bearing box, coupling, fan casing, impeller, etc.

When the induced draft fan vibrates, it will cause injury to people and equipment.

1. Harm to people. When working in a vibrating environment, human vision will be disturbed and it is difficult to concentrate, which may lead to quality accidents and even safety accidents. Vibration can interfere with the daily life of people around, such as sleep, rest, reading, and damage people's health.

 

2. Harm to the boiler room. Depending on the vibration intensity and frequency of the induced draft fan, it will destroy the building structure of the boiler room.

 

3. Harm to industrial boilers. The vibration of the induced draft fan will harm the normal operation of precision instruments, affect the accuracy and reading speed of the scale reading, or even fail to read at all.

 

4. Harm of noise to the environment. The vibration of the induced draft fan will directly radiate noise into the space, and it will propagate in the soil. During the propagation process, it will also agitate the vibration of the building foundation, walls, beams, ceilings, doors, windows and pipes. Radiate the noise again.

 

Therefore, we have to find out the main cause of the induced draft fan vibration of industrial boilers, and start to deal with the vibration fault immediately.

Gas-fired vacuum hot water units and gas-fired vacuum hot water boilers are all vacuum equipment, which have the characteristics of safety and no explosion risk, and can also output high-temperature hot water. However, there is still a clear difference in performance between the two.

The difference between these two types of equipment is generally reflected in the control and management of the equipment and the operational requirements of the operators. And, comparing these two, gas vacuum hot water boiler is better than gas vacuum hot water unit, the specific reason we also see below.

The gas-fired vacuum hot water boiler works by using the characteristics that the boiling temperature of water is different under different pressures. At an atmospheric pressure, the boiling temperature of the water is 100 ℃, and the vacuum hot water unit is operated within a pressure range of -0.02Mpa, and the corresponding heat medium water temperature is lower than 93 ℃. Under pressure, combustion raises the temperature of the heat medium water to saturation temperature and produces steam of the same temperature on the water surface.

The gas-fired vacuum hot water boiler adopts a unique condensation technology, so that the boiler's operating efficiency can reach 107%. Everyone has doubts here, can the operating efficiency exceed 100%? In fact, the gas vacuum hot water boiler can make full use of the boiler's own operating efficiency and the high temperature heat carried in the flue gas discharged, and then put it into the boiler for recycling, so that the boiler's operating efficiency can reach 107%. For enterprises using this type of equipment, the use of gas-fired vacuum hot water boilers can save at least tens of thousands of yuan to hundreds of thousands of yuan in fuel input costs.

Moreover, the gas vacuum hot water boiler uses gas fuel, plus the full premixed combustion technology, the gas fuel is pre-mixed with the combustion-supporting gas (that is, air) before being put into combustion, and then reaches the precise ratio before participating in the combustion. The fuel can be fully burned, the emission of nitrogen oxides is also reduced, and the environmental performance is more excellent.

Through various comparisons, it is enough to see that the overall efficiency of the gas vacuum hot water boiler is higher than that of the gas vacuum hot water unit.

There are more and more gas hot water boilers on the market. This is mainly because gas hot water boilers have the advantages of simple use, high operating efficiency, and low pollutant emissions. More and more customers like to use such equipment. Boiler types are even more abundant.

Gas hot water boilers are generally used for heating and heating. Of course, there are also some industries, such as automotive painting, aquaculture, buckling greenhouses and other industrial places, which have higher requirements for water temperature, and will also use this Boiler.

Today we are mainly talking about the common demand for gas hot water boilers-heating. When the heating area is 5000-6000 square meters, is it suitable to use gas hot water boiler?

Zhengzhou Fangkui Boiler Factory solemnly replies to everyone here that the heating area of ​​5000-6000 square meters is suitable for the use of gas hot water boilers. See below for specific reasons.

The operating efficiency of gas hot water boilers introduced by Zhengzhou Fangkui Boiler Factory can reach more than 95%, which is in a leading position in the entire boiler market. Calculated in this way, the heating area of ​​5000-6000 square meters only needs 0.35MW (that is, 0.5 tons, half tons) of gas hot water boiler is enough, compared with other heating equipment, I do not know how much higher the efficiency, the overall cost performance is also Very high.

Moreover, the overall volume of the 0.5-ton gas-fired hot water boiler is very small, generally within 2 cubic meters, and there is no high requirement for the boiler room. As long as the boiler is debugged, the water, electricity and gas pipelines can be connected and used.

In addition, the gas hot water boiler is also very convenient to operate. Each boiler is equipped with a control cabinet. You only need to adjust various coefficients by operating on the control cabinet to complete the boiler adjustment work. It is very simple and quick to get started.

When the boiler after-sales engineer of Zhengzhou Fangkui Boiler Factory visited customers regularly, he received many questions from users who used steam boilers: whether steam boilers must carry out blowdown operations. Many users look at the operation of the boiler is very good, they feel like it does not need to blow down, but is this the case? Zhengzhou Fangkuai Boiler Factory will tell you the answer.

The steam boiler must be discharged, and not only the steam boiler, but other types of boilers also need to be discharged, and they must be quantified regularly, using professional equipment and professional technicians.

No matter what kind of boiler, it is necessary to carry out blowdown work, otherwise it will affect the normal operation and use of the boiler, and thus shorten the boiler's service life.

For the discharge of steam boilers, the specific steps are as follows.

In a steam boiler, the boiler water with a lot of salt or alkali inside, as well as water slag, sludge, and sediment should be regularly removed, so that the boiler water meets the specified use requirements.

Steam boilers are used a lot in the brewing industry. Considering the particularity of the brewing industry, special attention should be paid to the use of boilers.

For steam boilers used in the brewing industry, it is necessary to pay attention to changes in the three aspects of boiler steam volume, steam outlet time and thermal efficiency. The relevant factors that affect the price of steam boilers are mainly manufacturers, materials, quality, and burners. Therefore, it is necessary to comprehensively consider the performance of the boiler, so as to have a reasonable range of choices, so as to choose the right boiler product.