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Gas Boiler

What is Gas Boilerl

 

 

Gas boilerl is a type of boiler specifically designed for industrial applications. It is typically constructed with durable materials such as cast iron and titanium to withstand the demands of industrial use.These gas boilerl are powered by natural gas or propane, which is piped into the boiler from an external source. This fuel is connected directly to the boiler, providing a continuous supply for efficient combustion.Compared to standard boilers, industrial gas boilerl offer higher efficiency in converting fuel into usable heat.

 

Advantages of Gas Boilerl

High Efficiency
Steam has better thermal transfer properties when compared with hot water or thermal oil systems. In comparison, the mass flow rate to transfer the same quantity of heat in a gas boiler is smaller by a factor of ~ 10-50 when compared with hot water systems and ~ 20-80 when compared with thermal oil systems.

 

Low Construction Cost
The smaller pipe cross-sections require less material that brings down the construction cost. Unlike hot water or thermal oil systems, gas boilers don’t require circulating pumps or heat exchangers.

 

Modular Design
It is possible to extend the system capacity in a modular fashion. The portable design allows for easy maintenance and flexibility to install or remove extra components per the gas boiler applications.

 

High Performance
Due to the high heat transfer coefficient, gas boilers require lesser exchanger surface area during condensation, which results in a reduced system cost. It is possible to achieve uniform & fast heating as steam releases large amounts of energy at constant pressure. Similarly, it is possible to control temperature precisely and quickly by adjusting the steam pressure.

 

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Our Factory

Founded in February 1994, China Hebei Hongze Boiler Manufacturing Co., Ltd. is a high-tech enterprise focusing on the design, manufacture and installation of boilers and environmental protection equipment. Is the state administration of quality and technology supervision, inspection and quarantine designated production of boilers and auxiliary machinery accessories professional manufacturers, has obtained a number of product patents.

Our Products

The boiler products produced by our company mainly include: WNS series 0.5-20 tons gas-fired boiler, SZS series 20-100 tons gas-fired boiler; DZL series 1 t - 200 t lan-burning carbon boilers, DZL series 1 t - 200 t coal-fired boilers, DZL series 1 t - 200 t biomass fired boilers. Among them, large coal-burning phase change pressure heating boiler and twin-body steam boiler series products have been China's national patents, since the launch of the market, by the majority of users love and praise!

Certifications

Our company has obtained a number of patent certificates in China, including the patent certificate of "pressurized phase-change hot water boiler" in 2011; Obtained the patent certificate of "dual-fuel CNC boiler burning biomass or coal" and the patent certificate of "biomass pellet boiler" in 2014; Obtained the patent certificate of "a micro coal atomization boiler" and "a micro coal atomization burner" in 2015; In 2016, I obtained the patent certificate of "a new type of low-carbon boiler with low nitrogen combustion" and the patent certificate of "a low-carbon boiler with low nitrogen combustion". The patent certificate of "one denitrification device" obtained in 2018; Obtained the patent certificate of "a dual-grate dual-body boiler" in 2019.

Our Service

Pre-sales service: Technical consultation at any time, patient guidance and communication;
Sales services: Help customers to design the plane layout, reasonable layout and guide the construction.
After-sales service: Always pay attention to and help every customer to solve all problems in the process of using our products.

 

Components of Gas Boilerl

Pressure Vessel: A pressure vessel contains gases or liquids at high temperatures, usually under high pressure. In a boiler, the pressure vessel is constructed from a high-strength material, often steel.


Burner: The burner provides heat to the boiler by combusting fuel and oxygen. Fuel sources include natural gas, low-pressure propane, No. 2 oil, coal and other fuels.


Tubes: In watertube boilers, the metal tubes situated inside the boiler contain water and are externally heated. In firetube boilers, heated gas passes through one or more tubes, heating water surrounding the tubes.


Economizer: An economizer is a heat exchange mechanism that transfers heat energy otherwise lost in exhaust gasses and uses that energy to heat the water entering the boiler. Consequently, less additional energy is required to heat the incoming water, making the boiler more efficient.


Deaerator Tank: Deaerators are pressurized feedwater tanks that use pressure and heat to remove oxygen and other dissolved gases (notably, carbon dioxide) from the water fed into the boiler. Dissolved oxygen and carbon dioxide could otherwise cause serious corrosion to the boiler.


Heat Exchanger: A heat exchanger transfers heat from one substance to another without those substances directly interacting. In a boiler, the hot gas' heat is transferred to the water via a heat exchanger.


Control Panel: The control panel enables operators to control boiler settings such as temperature and pressure. Commercial and industrial boiler control panels include detailed analytics.


Feedwater Tank: The feedwater tank is a collection tank that supplies the water used by the boiler to create steam. The feedwater tank is where the treated water is collected and then pumped into the boiler. Boiler chemicals that remove oxygen and protect the metals within the boiler are injected and mixed within the feedwater tank. Facilities with condensate return lines can collect condensate water from steam that drops below the boiler point and fed back into the system to recapture the treated water.


Combustion System: The combustion system works by combining air and fuel then igniting the mixture to produce heat. Ensuring the correct balance of air to fuel is an important component of the boiler combustion system.


Reverse Osmosis System: Reverse Osmosis works by using a high-pressure pump to increase the pressure on the raw water side of the RO and force the water across the semi-permeable RO membrane, leaving almost all (around 95% to 99%) of dissolved impurities behind in the reject stream.


Chemical Monitoring Systems: The carefully controlled addition of chemicals can enhance a boiler's operations. Chemical monitoring systems precisely monitor chemical levels and provide ongoing analysis.


Water Treatment: Water used by the boilers needs to be treated before entering the boiler to prolong the life of the boiler. Water softeners and Reverse Osmosis systems help to prepare the water by removing dissolved solids like calcium and magnesium to reduce the potential for scale build-up within the boiler. Feedwater tanks are also a part of the water treatment as they use heat to reduce the number of dissolved gases within the water that can contribute to oxidation and corrosion within the boiler.

 

How to Choose Gas Boiler
全自动燃气蒸汽锅炉
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Gas Steam Flow Rate And Maximum Available Pressure
Starting with these values, and adding a safety margin (20-30% is recommended), we can obtain the necessary flow rate and pressure values. Each industrial gas boiler model taken into consideration must comply with these parameters. The calculation of the pressure values and flow rates required of the gas boiler becomes increasingly crucial as the system's complexity increases.
In fact, while the gas flow rate and pressure value calculation are rather simple for a small dairy that only uses gas for pasteurization, it becomes more complex when other needs have to be met, like heating ovens, humidification, and system sterilization.

 

Gas Boiler Emissions
A third aspect that's becoming increasingly important is atmospheric gas emission limits. Much like cars, industrial gas boilers are also subject to increasingly strict regulations in terms of emissions. And in this case, as well, the problematic gas types are nitrogen oxides (NOx).

 

Daily Management and Maintenance
Once the boiler has been chosen and installed, the “problem” of its daily management arises. As you certainly already know, gas boilers are pressurized machines that require constant supervision.This supervision must be provided by an operator who has received specialized training on the boiler's management.
One way to decrease the operator's workload is to have the boiler certified for continuous unsupervised operation for 72h.
Another way to simplify the daily management of a heating plant room is through the use of connectivity.
In fact, many industrial boilers are equipped with numerous sensors to monitor their performance parameters, and these can be sent to a remote server via an Internet connection, where they can be independently viewed by the system's manager.
If this aspect is combined with the possibility of controlling these parameters remotely, the time required for daily management decreases even further.
But in addition to the boiler's daily management, maintenance must also be taken into consideration.
And while it's difficult to come up with a precise estimate of the maintenance costs, you can, however, get a general idea.
It is also recommended to check the origins of any pumps, sensors, and valves, and to only choose those from reliable and well-known manufacturers.
In terms of both ordinary management and maintenance, having an electronic control system connected to the Internet certainly facilitates work activities.
Once again, be sure to check that the new boiler is connected to the Internet and that the manufacturer can even provide support remotely by directly accessing the boiler's controls.
This facilitates the interactions between the 2 parties' technicians and limits the intervention time necessary to resolve any problems.

 

Water Treatment
The last important aspect is the treatment of industrial gas boiler water.
In fact, it's important to continuously monitor the water's parameters and to ensure that they are consistent with those required by the manufacturer. The water must be devoid of salinity to avoid scale build-ups, dissolved gases to eliminate the risk of corrosion, and organic substances to prevent the formation of foam and deposits.
The less salinity and dissolved gases present in the water, the longer the industrial gas boiler will remain in function and the less maintenance will be required. Every gas boiler manufacturer installs different water filtering and blowdown systems.
Specific information must be requested in this regard during the purchasing phase in order to ensure that these systems constantly monitor the water, prevent needless waste, and, if possible, are connected to the Internet.
Waste is most likely to occur via the blowdown systems. In fact, these systems eliminate the water from the industrial gas boiler body in order to allow any salt deposits on the surfaces and the bottom to be removed. In doing so, the blowdown systems discharge numerous liters of water that have already been treated and, above all, has already been heated.
This naturally has an impact on the industrial gas boiler system's overall efficiency.
It is therefore recommended to check the types of blowdown systems that are utilized and the amount of water that is eliminated every day in order to determine which industrial gas boiler system wastes the least.

 

How Does Gas Boiler Work
 

Fuel Combustion And Heat Release: Various fuels, including coal, natural gas, and oil, are employed in industrial gas boilers. Ignition of the fuel within the furnace chamber initiates high-temperature combustion. Throughout this combustion process, the chemical energy contained in the fuel is liberated, transforming into heat energy. Consequently, flue gases and exhaust gases are generated and expelled through the flue system.

 

Heating Of Water And Conversion To Steam: The heat energy liberated during combustion moves through the furnace chamber's wall casing, transferring to the adjacent tube bundles or directly to the pot barrel. This barrel, filled with water, undergoes a transfer of heat energy, resulting in its gradual heating. With increasing temperature, the water undergoes a phase change, transitioning into steam.

 

Collection And Distribution Of Steam: As the water undergoes heating, the generated steam accumulates within the pot's barrel. Once the steam attains the desired pressure and temperature, it is gathered in the steam vessel, typically positioned atop the boiler. Through a network of pipes, the steam can then be directed to its intended destination, whether it be for powering mechanical equipment, heating systems, or industrial processes.

 

Venting Of Flue Gases: As fuel combusts, releasing heat energy, flue gases and exhaust gases are produced and expelled through a designated flue system. The flue, comprising passages, channels these gases into the atmosphere. Within the flue system, additional components like flue gas cleaners are frequently incorporated to mitigate the emission of pollutants from the exhaust gases.

 

 
Types of Gas Boiler
 
01/

Fire Tube Boilers
These are classic boilers with tubes containing hot gas from combustion. Water surrounds these tubes, and heat transfers to the water, generating steam. They are versatile and commonly used in industrial settings.

02/

Water Tube Boilers
Unlike fire tube boilers, water tube boilers have water-filled tubes through which hot gases pass, heating the water and producing steam. They excel in high-pressure applications and are prevalent in power generation plants.

03/

Package Boilers
Pre-assembled on a steel base, package boilers are compact and easy to install. They're ideal for smaller industrial setups or where space is limited, offering efficiency and convenience.

04/

Modular Boilers
Consisting of multiple small water-tube boilers, modular boilers can be interconnected to meet varying steam demands. This design provides flexibility and redundancy, allowing for maintenance without system shutdown.

05/

Condensing Boilers
Engineered to recover heat from exhaust gases, condensing boilers maximize efficiency by condensing water vapor in the exhaust, releasing additional heat energy. They are highly efficient and popular in commercial and residential heating systems.

06/

Low NOx Boilers
These boilers aim to minimize nitrogen oxide emissions by employing combustion modifications and technologies. They are crucial for meeting environmental regulations and are used in various industries to reduce air pollution.

07/

Steam Generators
While not technically boilers, steam generators produce steam by heating water using electric elements or gas burners. They're favored for applications requiring clean steam, such as laboratories or pharmaceutical facilities.

08/

Industrial Watertube Boilers
Designed for high-capacity industrial operations like power generation or large-scale steam production, industrial watertube boilers are efficient and capable of operating at high pressures and temperatures.

 

Application of Gas Boiler

 

 

Electrical Generation
Gas boilers can efficiently convert thermal energy into electrical energy. First, the boiler uses the thermal energy from the combustion chamber to evaporate water into steam. Next, it builds pressure and turns turbine blades, causing the shaft to rotate, generating mechanical energy. Finally, the rotating shaft connects to an electric generator which converts the mechanical energy into electricity. This can be done at an individual scale to offset the energy costs of an industrial or manufacturing facility or at a large scale.

 

Food And Beverage
Food and beverage facilities are a prevalent industry that requires gas boilers. Because of the potential for cross-contamination and food-borne illness, a boiler must be able to generate high-temperature water and steam for sanitation in restaurants and food production facilities. Tools, surfaces, and even produce are either steam cleaned or wiped down with hot water to sanitize and eliminate bacteria and food-borne pathogens.

Boilers are also used for sanitizing in breweries but can require more individualized control. The gas boilers heats water to specific temperatures during the brewing process to create delicious beverages. The boilers used in brewery applications require precise temperature controls to achieve the perfect taste.

 

Agriculture
One of the unique applications for gas boilers is in the agricultural industry. Like the food and beverage industry, steam and hot water can sanitize the tools that harvest produce and tend to crops. Additionally, an application unique to agriculture is soil steaming.

 

Pharmaceuticals
Steam is used for drying, disinfecting, rough cleaning, tableting, and other manufacturing steps. With pharmaceutical manufacturing, boilers must be capable of precise temperature control to purify medicines. Additionally, clean or pure steam is required to ensure that the disinfection process is free of any potential contaminants that can affect the final product. Clean steam comes from uncontaminated water that is free of any additives.

 

Chemical Processing
Steam heats and cools reactors for chemical processing to specific temperatures for catalyzing reactions. Depending on the type of reaction, volumes of steam output may fluctuate widely day to day or even hour to hour. Therefore, boilers used in this industry must operate in this cyclical manner efficiently without wasting steam or fuel.

 

Textile Manufacturing
Steam is essential throughout the textile manufacturing process. The first is pre-treatment, where hot steam is used on raw materials or fabrics to remove dirt and other impurities that would otherwise impact the quality of the textile. During the dyeing stage, precisely controlled steam provides the correct amount of heat and moisture necessary for each unique fabric to accept the dye optimally. Steam removes wrinkles in the fabric during the finishing step to prepare it for presentation. Large-scale steaming is a much more efficient method of wrinkle removal than the use of a traditional iron or heat alone.

 

 
FAQ
 

Q: What is industrial gas boiler?

A: Industrial gas boilers (oil) Gas boilers are powered by natural gas, which is pumped through an underground gas line. Often, rural ones use propane gas from a large tank placed outside the house, since in most rural areas there is no main line for natural gas.

Q: How efficient is an industrial gas boiler?

A: Generally speaking, gas steam boilers should have a minimum AFUE rating of 80 percent, meaning 80 percent of the energy consumed is converted to steam. (hot water boilers generally have higher AFUE ratings than steam boilers, and condensing boilers typically have high-efficiency ratings, as well.

Q: How does an industrial gas boiler work?

A: A commercial heating system with a boiler operates by using a fuel source, such as natural gas or oil, to generate heat. The boiler heats water or produces steam, which is then circulated through a network of pipes to deliver heat to various areas within the building.

Q: What is the process of a gas boiler?

A: The thermal energy transfer process of a gas boiler is the process of converting the thermal energy of the fuel into the thermal energy of water, and finally providing steam or hot water. This process involves key steps such as combustion, heat energy transfer and water circulation.

Q: What are the stages of gas boiler?

A: The combustion process in gas boiler includes three stages, i.e., pre-heating, actual ignition, and post-combustion. A steam boiler burner system consists of air shutters to control the amount of air mixed with natural gas for proper burning.

Q: What controls a gas boilerr?

A: Most gas boilers have three main controls that maintain the correct steam pressure inside the boiler and cause the boiler to shut down if an unsafe pressure is reached. These three main controls are the operator, modulation, and high limit pressure controls.

Q: Can a gas boiler overheat?

A: They do so as the boilers get hotter, thus if the pressure release valves stop working it can cause a boiler to overheat. Some pressure-release valves (depending on the design and brand) are known for suffering leaks.

Q: What happens when there is too much water in a gas boiler?

A: However bad the other consequences of too much water can be, the worst possible outcome from adding too much water is getting water in the steam header. When water is forced out of the header instead of steam, condensate ends up where it's not supposed to go in your steam system.

Q: How often should I flush my gas boiler?

A: Flush your boiler at least once a year, or more often if necessary. Use a hose to flush the boiler, as this will create a more powerful flow of water. If your boiler has a built-in flush valve, follow the manufacturer's instructions to use it. Be careful not to overfill the boiler, as this can damage the system.

Q: Can I install a gas boiler myself?

A: Boiler installation should be left to professionals because the skill set required to install them is one that must be honed over years and supported by experience and technical training.

As one of the leading gas boiler manufacturers and suppliers in China for over 25 years, we warmly welcome you to buy cost-efficient gas boiler made in China here from our factory. Good service and competitive price are available. Contact us for quotation.

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