List of Boiler Manufacturer in Sri Lanka

List of Boiler Manufacturer in Sri Lanka

Sri Lankan customers were invited to visit ZOZEN Boiler Production Base

List of Boiler Manufacturer in Sri Lanka
Chinese manufacturing has been deeply rooted in Sri Lanka’s economic market. Based on the principle of merit-based selection, the Sri Lanka delegation conducted a comprehensive understanding of some large-scale industrial boiler manufacturers in China. Through the collection and analysis of the boiler market data in China, the delegation discovered ZOZEN Boiler, which is outstanding in industrial boilers, and got in touch with it. After preliminary communication, the delegation was attracted by the professionalism of ZOZEN Boiler and decided to be invited to visit the production base of ZOZEN Boiler in Wuxi, Jiangsu.

The biogas boiler innovatively developed by ZOZEN Boiler realizes the full-proportional combustion of biogas and natural gas. It can be widely used in large and medium-sized enterprises such as animal husbandry and wine industry. While reducing boiler fuel costs, it is more environmentally friendly and provides sustainable development for enterprises. A practical solution. High performance and good environmental protection. ZOZEN biogas boilers have been successfully used in the livestock industry, wine industry and other industries. The thermal efficiency of ZOZEN biogas boilers can reach more than 98%, and the nitrogen oxide emissions are better than the national first-class standards. It has the advantages of high energy efficiency and strong environmental protection performance. It is unanimously optimistic that it has been widely used in animal husbandry, wine industry and other industries to effectively reduce air pollution and promote sustainable development of enterprises.

The WNS series gas-fired hot water boiler of ZOZEN Boiler has been tested to achieve a thermal efficiency of over 98%. At the same time, WNS series gas-fired boilers are quick-installed boilers with short installation period and low cost.

How Much Coal Required for 1 Ton Steam Generation?

how much coal required for 1 ton steam generation

How much steam does a coal-fired steam boiler produce from 1 ton of coal? This needs to be calculated. First, different coal fuels have different calorific values; secondly, the boiler capacity and boiler pressure will also change the amount of steam produced by 1 ton of coal. It is difficult to calculate an accurate value under multiple variables.

 how much coal required for 1 ton steam generation

1. Large-scale coal-fired boilers, such as steam boilers with a rated evaporation capacity of 1000t/h and a coal consumption of 250t/h, so that the steam production per ton of coal is 4t steam/t coal. Generally, large boilers are about this order of magnitude. In actual operation, this ratio is calculated based on real-time data, not a fixed number.

2. Small and medium-sized coal-fired boilers, taking 15-ton coal-fired boilers as an example. We can refer to the standard coal consumption of a 1 ton coal-fired steam boiler to produce 1 ton of steam per hour, which is about 133 kg, and the coal consumption of a 15 ton coal-fired steam boiler to produce 15 tons of steam per hour is about 1995 kg. 1 ton of coal = 1000 kg, then 15: x = 1995: 2, it can be concluded that 1 ton of coal can produce approximately 8 tons of steam.

In fact, we don’t need to calculate how much steam is produced by 1 ton of coal, just remember that the standard coal consumed by a 1 ton of coal-fired steam boiler to produce 1 ton of steam per hour is about 133 kg. ZOZEN——A grade boiler manufacturer produces coal-fired, oil-fired gas, biomass and heat-conducting oil boilers with complete models, which can be used in a variety of industries. For more questions, please consult online customer service!

Analysis of performance characteristics of electric heating steam boiler

The safety of electric heating steam boilers is reflected in: Leakage protection: When a boiler leaks electricity, it cuts off the power in time through the leakage circuit breaker to ensure personal safety. Water shortage protection: When the boiler is short of water, the heating tube control circuit is cut off in time to prevent dry burning damage to the heating tube. At the same time, the controller issues a water shortage alarm indication. Grounding protection: When the boiler shell is charged, the leakage current is conducted to the ground through the ground wire to ensure personal safety. Generally, the protective ground wire should be well-connected to the ground. Angle irons and steel pipes that are deeply buried in the ground are usually used as grounding bodies. Steam overpressure protection: When the boiler steam pressure exceeds the set upper limit pressure, the safety valve is activated, releasing steam to reduce the pressure.

The convenience of the electric heating steam boiler is reflected in: after the power is introduced into the electric control box, one-click operation, the boiler will enter (or leave) the fully automatic operation state. The amount of water in the boiler is reduced, and the control system automatically replenishes water from the water tank into the boiler through the make-up pump.

The rationality of the electric heating steam boiler is: in order to use the electric energy reasonably and efficiently, the heating power is divided into several sections, and the controller automatically turns on (cuts off) the cycle. After the user determines the heating power according to the actual needs, just close the corresponding The earth leakage circuit breaker (or press the corresponding switch). The segmented cycle switching of the heating pipe reduces the impact of the boiler on the power grid during operation.

The reliability of the electric heating steam boiler is reflected in that the boiler body is argon arc welded as a base, the cover is welded by hand, and it is strictly inspected by X-ray inspection. The boiler uses steel and is selected strictly according to the manufacturing standards. Boiler accessories are selected from domestic and foreign products and tested by the furnace to ensure long-term normal operation of the boiler.

Analysis and comparison of four boilers

Analysis and comparison of four boilers

1. The first advantage of oil-fired boilers is less equipment investment. Fuel oil burns quickly, and there is no coking problem in the furnace. The furnace volume heat load is relatively high, which can be nearly double that of coal-fired boilers. In this way, the volume of the furnace is significantly reduced, and the boiler steel frame can be reduced accordingly. The ash content in the fuel is very small, and the ash content in the flue gas is very light to the tail heating surface. You can choose a higher flue gas velocity to strengthen the heat transfer on the tail heating surface, which can reduce the tail heating surface. There is no need for huge pulverizing equipment, and there is no need to build huge coal storage yards, ash storage yards, and powder storage bins. The fuel oil system is simple. The second advantage is that due to the low ash content in the oil, the wear of the equipment by fuel and flue gas is very light, and the workload of equipment maintenance and repair is small. The third advantage is that fuel oil does not require further processing, and it is convenient to transport as long as the temperature is increased, and it can be sent to the boiler by boosting the pump. As a result, fuel oil furnaces consume less electricity per ton of steam. The disadvantage of oil-fired boilers is that they consume a lot of valuable high-quality fuel. Fuel oil is an important chemical raw material. It is a pity to burn a large amount as fuel. In the current situation of energy shortage and high fuel oil prices, it is of great economic significance to not burn oil or burn less oil.

2. The chain furnace is a layer furnace with the most complete structure and the most reasonable combustion organization. Due to the high degree of mechanization, the labor intensity is not large, no complicated milling system is needed, the investment is relatively low, and the thermal efficiency of the boiler is high. Therefore, it is widely used in China for small and medium boilers below 65t / h. The disadvantage of a chain furnace is that it needs to burn coal of good quality, the boiler has lower thermal efficiency than a pulverized coal furnace, and the load adjustment is not as fast as a pulverized coal furnace. Therefore, a large boiler does not use a chain furnace. Most of the chain furnaces produced in our country are horizontal drum water tube boilers. The boiler barrels of the double boiler chain furnace are arranged vertically, and a convection tube bundle is connected between the upper and lower boiler barrels as an evaporation heating surface. The convection tube bundle is mostly arranged behind the superheater.

3. The pulverized coal obtained by pulverizing the coal of the pulverized coal boiler has very small particles. The pulverized coal per unit mass has a large surface area, can be well mixed with air, and burns completely. The mechanical incomplete combustion loss, the chemical incomplete combustion loss and the excess air coefficient of the furnace outlet are lower than the chain furnace, so the thermal efficiency of the pulverized coal furnace is higher than that of the chain furnace. The pulverized coal furnace is a chamber combustion furnace and adopts suspension combustion, so the load adjustment is faster than that of a chain furnace. Because the pulverized coal furnace has a complete pulverizing system, it can burn inferior coal, while the chain furnace not only has certain requirements for the particle size of the coal, but also requires low moisture content, ash content, high ash melting point, and does not have strong coking. Quality coal. However, the pulverized coal furnace requires huge and complicated pulverizing equipment, which occupies a large area, requires more investment, increases the power consumption of the plant, and makes the pulverizing system work more noisy. Serious, heavy maintenance workload. These are the disadvantages of pulverized coal furnaces. These advantages and disadvantages of pulverized coal furnaces determine that only large and medium-sized boilers can use pulverized coal furnaces to outweigh the disadvantages. Therefore, pulverized coal furnaces are only suitable for large and medium boilers, and small boilers are rarely used.

4. Due to the unique combustion method of the fluidized bed boiler, the lower part of the fluidized bed boiler always maintains a very thick material layer with a temperature of 850-950 ° C, which is equivalent to a large high-temperature heat storage pool. Fuel only accounts for about 5%, and the newly added fuel is immediately mixed with dozens of times of its own high-temperature materials, which can make any difficult-to-burn fuel quickly catch fire. Because the fuel circulates up and down in the fluidized bed boiler, its residence time is longer, and it provides sufficient combustion time for various fuels that are difficult to burn out. The fluidized bed boiler can burn extremely poor quality fuel, even if the ash content reaches 70%, the fuel with a calorific value of only 4200KJ / kg, and the volatile content is only 2% -3%, and the anthracite and carbon content are 15%. All the above slags can be well burned.

Because the materials in the fluidized bed have radiation, convection and heat conduction to the buried pipe at the same time, the heat transfer coefficient of the buried pipe is very high, which can reach 230-290W / (m2 / ℃), which is the water cooling of the pulverized coal furnace. 5-6 times the wall. Due to the ignition conditions of the newly added fuel in the fluidized bed, the combustion and exhaustion conditions are very good, and the combustion intensity is very high. It belongs to low-temperature intensified combustion. Its volumetric heat load can reach 1.7-2.1MW / m3, which is 10 Times. Therefore, the fluidized bed boiler furnace has a small volume, which is only about half that of other types of boilers of the same capacity, which can reduce metal consumption and equipment costs. The desulfurizing agent (limestone, dolomite) added at the same time as the fuel can desulfurize the fuel, which not only reduces the pollution of the flue gas to the atmosphere, but also helps to reduce the low temperature corrosion of the heated surface of the tail. The fluidized-bed boiler ash has the characteristics of low-temperature burning through, which is convenient for comprehensive utilization. The ash has been used to manufacture building materials, extract chemical products, and be used as farmland fertilizer. Due to the excellent fuel ignition and combustion conditions, there is no need to worry about extinguishing the fire due to the reduction of the furnace temperature at low load, so the load regulation performance is good, and the fluidized bed boiler can operate normally within the load range of 25% to 110%.

Although fluidized bed boilers have many advantages, they also have the following disadvantages: low boiler thermal efficiency. The thermal efficiency of fluidized bed boilers is usually 54% -68%. The main reason is that the mechanical incomplete combustion loss is large. Buried tubes in fluidized bed boilers are subject to rapid wear and tear due to the severe impact of the material. If no anti-wear measures are taken, the buried pipe with a wall thickness of 3.5mm will be worn through for 3-6 months. After the anti-wear measures are taken, the buried pipe can only run for 1-2 years, which significantly increases the maintenance cost. Large power consumption. In order to burn the fuel in a fluidized state, the raw coal is broken into particles below 8 mm and high-pressure air is used, so that the power consumption per unit evaporation of the fluidized bed boiler is about twice that of a pulverized coal furnace.

Advantages of WNS Series Tee Boiler

WNS boiler products adopt horizontal three-return wet back corrugated furnace tube structure. It is mainly composed of pot shell, furnace pot, flashback chamber, and smoke pipe.

The boiler adopts a wet-back, corrugated furnace tube structure, and the heating surface is symmetrically arranged. Effectively reduce the boiler thermal stress and improve the safe use and life of the boiler.

The boiler adopts highly efficient heat transfer threaded smoke pipe, which improves the heat transfer effect of the smoke pipe. At the same time, it has good thermal expansion and contraction properties, which can prevent deformation of the heated surface.

The steam boiler uses a low-positioned combustion chamber, which makes the boiler water level safer, the boiler steam space larger, and the steam quality is well guaranteed.

A steel tube fin type energy saver is arranged at the end of the boiler, which has high heat transfer efficiency and reduces fuel consumption.

The boiler adopts high-quality aluminum silicate encrypted insulation to reduce heat loss.

The heating surface of the boiler is adequately arranged, the boiler starts quickly, and the load rise time is short.

The boiler has access door holes for convenient maintenance.

The use of internationally renowned brand burners has achieved efficient combustion of the boiler, saving fuel, reducing pollution, noise and exhaust emissions.

The boiler adopts advanced mechatronics automatic control technology. Remote human-machine interaction and data sharing can be achieved through the mobile Internet.

10-ton biomass hot water boiler for school heating

With the improvement of infrastructure, many schools have established heating systems to create a comfortable office and learning environment for teachers and students. With the elimination of coal-fired boilers, many schools began to use gas-fired hot water boilers for heating. However, in some areas where natural gas is not very popular, at this time, biomass hot water boilers are an ideal choice.

Biomass hot water boiler, the fuel used is biomass pellets made from agricultural wastes such as straw, rice straw, bagasse, etc. Most of these wastes were previously burned or discarded. Now, after recycling and processing as fuel, it can be described as one-shot It not only avoids the damage they cause to the environment, but also realizes the use of waste and reduces the energy burden on the country.

There are two types of 10-ton biomass hot water boilers produced by zozen: DZL and SZL. Depending on the pressure, there are also 10-ton biomass normal-pressure hot water boilers and 10-ton biomass pressure hot-water boilers. Their heating The area can reach around 800-100000 square meters. As for which boiler to choose, you can choose reasonably based on your actual needs and capital situation.


For China, the development of domestic urbanization, the improvement of people’s living standards, winter heating is indispensable in the North. When the commuters came home from work and shivered by the cold north wind, it was so cozy that they came back home to warm their faces. It must have been the dream of many southern friends.


Did you not see that in winter, it was the dream of many friends in the south, and did you not see that when they came home from work, and when they were shivering by the cold north wind, they came back home to warm their faces? The friends of the south were playing with the heat and were bitterly suffering from the cold. Today, please join us in understanding what use of boiler in textile factorys are used for heating and why heating with hot water boilers is more energy-efficient and environmentally friendly. Hot water boilers are generally used for heating, except for less production The process requires the use of steam. Because it is more energy-saving and environmentally friendly than using steam boilers. First of all, in terms of fuel consumption, hot water boiler heating than steam boiler heating 20% less fuel, this amount is very considerable.


There are two reasons: one is the heat loss caused by the lack of condensation water and secondary evaporation, the other is the hot water heating pipe through the use of special heat preservation materials, the pipe is also as thin as possible to meet the needs of the situation, the heat loss is relatively small. The heat loss caused by steam leakage from steam heating pipe is relatively large. Hot water boilers require only a small amount of regular discharge. Hot water heating has another benefit. It is possible to adjust the quality and temperature of hot water flexibly, when the outdoor temperature is lower, the temperature of hot water needs to be increased to meet the needs of people, and when the temperature of the outdoor temperature is higher, the temperature of hot water can be lowered.


This can not only meet the needs of people, but also achieve the effect of energy saving and environmental protection. And its system maintenance cost is also lower. Hot water boilers can heating dozens of kilometers away in residential areas, such as boilers in this respect has a good performance. Although there are some shortcomings in other aspects of hot water heating the overall economic benefit is remarkable and the energy saving and environmental protection effect is better. Our hot water boiler has excellent performance and service life Long, operational aspect.

First, to ensure the perfection of natural gas use of boiler in textile factory and auxiliary equipment; water level gauge, pressure gauge, drain valve, pressure relief device …… must ensure that they can be used normally, and marking a clear, easy viewing.

Structure designed according to the use of boiler in textile factory pressure, provided through the top of the large pores, the boiler operates at atmospheric pressure, away from the danger of explosion; boiler furnace using computer simulation to optimize the design, the size of the boiler is fully optimized, so that coordination aesthetic aspect.


Most people don’t realize it, but steam plays a huge role in the manufacturing of textiles. It doesn’t matter the fabric or the purpose, large amounts of steam are required in the process of textile manufacturing. Of course, this requires an industrial steam boiler to produce the steam a manufacturing plant will need on any given day to keep up with production. Just ask our clients, Glen Raven, a textile company that saw an 80% increase in efficiency after switching to zozen boilers. For any textile manufacturing operation, here are a few things you should be looking for when choosing a steam boiler.


This is perhaps the most important quality textile manufacturers need in a boiler system. Steam needs during textile operations tend to be a little erratic, fluctuating over the course of the day. This requires boilers that can be shut off when they’re not needed so that water and fuel aren’t unnecessarily wasted. At the same time, the boilers need to be easy to turn on when the need for steam spikes during certain periods of the day.

Conventional fire tube boilers usually don’t have great flexibility. If they don’t run idle, which wastes fuel and money, it can take a while before they’re able to run at peak capacity. A better option for most textile manufacturers is the smaller, modular boilers like the ones made by zozen. These water tube boilers can start producing steam from a cold startup in less than five minutes, allowing them to respond quickly to the changing steam demand of textile manufacturing.

Obviously, most textile manufacturers would prefer to invest their money in quality fabric rather than fuel. Of course, this requires a boiler system that can be cost-effective when it comes to burning fuel. With fluctuating steam needs, it can be difficult to find boilers that can keep up with the changing needs of textile manufacturing and remain fuel-efficient at the same time.

With the ability of zozen boilers to turn on and off with ease as steam demand rises and falls, they are the most fuel-efficient industrial boilers available. It rarely makes sense to keep zozen boilers running idle, which means they only consume fuel when they’re producing steam. Many textile manufacturers that have switched to zozen boilers from conventional fire tube boilers report a 20% saving in fuel costs, which can lead to massive savings over the long run.

This is one aspect of boilers that too many textile manufacturers overlook but is actually vital to the operation. If a boiler breaks down or needs to undergo routine maintenance, it can force the entire manufacturing process to shut down. Obviously, this isn’t ideal for maintaining productivity, even if it’s a necessity.

This is another area where zozen boilers are superior to traditional fire tube boilers. With several smaller boilers, one can be shut down for maintenance purposes while the others continue to run, so manufacturing doesn’t have to stop. The same is true is one needs to be shut down for repairs. zozen boilers can also undergo routine inspections in less than a day whereas larger boilers may need to be shut down for several days while undergoing maintenance.

Types of Boiler Machine of Textile Mills

What is a boiler for Textile mills ?

List of  boiler machine for Textile Mills and Apparel Industry is  closed vessel in which water or other liquid is heated, steam or vapor is generated, steam is superheated, or any combination thereof, under pressure or vacuum, for use external to itself, by the direct application of energy from the combustion of fuels, from electricity or nuclear energy. These are fired units for heating or vaporizing liquids other than water where these units are separate from processing systems and are complete within themselves. The definition includes water heaters that exceed 200,000 Btu/hr heat input, 200 degrees Fahrenheit at the outlet, or 120 gallons nominal water containing heating capacity.


Whether you realize it or not, boilers are an indispensable part of the textile manufacturing industry. Almost the entire manufacturing process from start to finish requires either steam or hot water produced by industrial boilers, so choosing a boiler system for textile manufacturing should involve careful consideration .. Let’s take a closer look at all the ways steam boilers help make textile manufacturing possible.

The pre-treatment phase is arguably the most important of textile manufacturing. This is the part that prepares the fabric for dyeing and finishing by removing any dirt or other impurities that can have a negative effect on the quality of the fabric during the rest of the process. There are a number of steps in this process, and some of them require both steam and hot water that is clean and pure, which requires an efficient steam boiler.

Dyeing, as you may know, is the process of adding pigments or dyes to fabrics in order to give them their color. Obviously, this is an important part of giving textiles their preferred look, and it wouldn’t be possible without steam boilers. Transferring the dye to the fabric requires a precise amount of heat and moisture that is provided by steam. Depending on various colors, fabrics, and other factors, there are a wide array of variables when dyeing textiles However, steam boilers make it possible to heat water and steam to specific temperatures that are needed to dye fabrics the proper color.

Printing is similar to dyeing with regard to fabrics except printing adds designs or patterns to fabrics while dyeing procures one uniform color over an entire sheet or set of textiles. Much like dyeing, there are a number of different methods that can be used based on the type of fabric and the finished product. However, steam is one of the more common methods used in textile printing. Boilers help to provide the specific settings of heat and moisture required to perform printing on many types of fabric.

Naturally, the finishing process when manufacturing textiles can be complicated and involves a number of steps. One of these steps involving steaming the textiles in order to remove wrinkles. Using dry heat or a traditional iron are also common methods for removing the wrinkles from clothing and other types of textiles. However, for certain types of fabrics, steam is the ideal method, making a steam boiler an important part of the process.

Obviously, textile manufacturing can be a complicated process, but there’s no denying the importance of steam boilers during that process. Many textile manufacturers have found that zozen’s modular, water tube boilers are the best option. With their ability to start producing steam quickly from a cold startup and adjust to changing steam needs quickly, zozen boilers are ideal for producing hot water and steam at the precise settings that are necessary during the textile manufacturing process. On top of that, they are more fuel-efficient than traditional boilers, enabling textile producers to focus on creating quality products rather than becoming concerned with the cost of fuel.