There are two main types of boiler used in the industrial engineering world, these are the fire tube boiler and water tube boiler. As the name implies, the difference between the two boilers is where the gases of combustion and water are relative to the boiler tubes.
The fire tube steam boiler adopts boiler shell type corrugated furnace structure, smoke three-pass with a wetback smoke-transfer chamber, spirally corrugated tube technology. So the fire tube steam boiler is named horizontal fire tube boiler, or 3 pass fire tube boiler. The complete set product of boiler consists of burners,boilers, control systems and accessories.This series fire tube steam boilers are designed to be safe, reliable, efficient, energy-saving and environmental protection. It also features convenient maintenance, long service life, automatic intelligent control, etc.
Fire Tube Steam Boiler System Composition
Fire tube steam boiler is operated reliably and efficiently to meet industrial processing enormous steam needs. But a good boiler system is not only to provide sufficient steam, but also to protect the environment and reduce operating costs. Different industries have different needs for steam and different requirements for control systems. Therefore, intelligent boiler control systems are particularly important. We can help different customers realize their requirements through boilers and control systems.
·Combustion System
·Steam Water System
·Control System
· Fire Tube Steam Boiler Combustion System
The combustion system supplies fuel to the fire tube steam boiler for heat generation.
The fire tube steam boilers' combustion system equips with burner and fuel device according to the fuel properties, steam capacity and pressure of the fire tube steam boiler.
Burner brand: Baltur, Riello, Weishaupt, Hofamat, Honeywell, Ecoflam, Cavallo and so on.
· Fire Tube Steam Boiler Steam Water System
The steam water system consists of feedwater part and steam part.
Feedwater part: Feedwater refers to the water that is provided to the boiler for steam conversion. The feedwater channels water into the boiler and automatically controls it to satisfy steam requirements.
Steam part: the steam is the part of the boiler responsible for collecting and regulating the steam generated by the boiler. Remote Valves and instrument controls are used to monitor and regulate steam pressure, temperature, and capacity.
The steam and water system should be composed of boiler main body, rear heating surface(such as economizer,condenser and so on which are equipped according to actual situation of user), water treatment device, feed water pump, steam header, deaerator and so on.
· Fire Tube Steam Boiler Control System
The fire tube steam boilers’ control system is a collection of boiler electrical control components, a center for collecting and processing boiler operating signals, and an operation platform for sending execution instructions to each execution unit of the boiler.
The control system circuit of the fire tube steam boiler is relatively complicated, and the core role is the PLC or DCS control. We can program the logic according to the specific requirements of the customer. The steam boiler control system circuit is mainly composed of logic editing PLC, terminals, modules, control panels, frequency converters, switches, isolation barrier, etc. The circuit drawings are mainly composed of primary circuit diagrams, secondary circuit diagrams, terminal wiring diagrams, PLC point diagrams, etc. Now one of the PLC point diagrams is shown as follows:
All of these control system circuits will be reflected in control cabinets, and the boiler control system is operated on the control cabinet. Types of control cabinets for wood pellet steam boiler: wall-mounted control cabinet, podium control cabinet, MCC vertical control cabinet, piano-style control cabinet, positive pressure explosion-proof control cabinets, and three-proof control cabinet. Each control cabinet we leave the factory has a unique number, and it has the function of mobile phone viewing. You can see the operating status of the boiler in real-time, such as temperature, water level, pressure, alarm record, etc. But the actual operation still needs to be completed by the staff in the boiler room. The control cabinets picture is shown as follows:
Fire Tube Boiler Technical Parameter
Model
WNS6-1.25-Q.Y
WNS6-1.6-Q.Y
WNS8-1.25-Q.Y
WNS8-1.6-Q.Y
WNS10-1.25-Q.Y
WNS10-1.6-Q.Y
WNS15-1.25-Q.Y
WNS15-1.6-Q.Y
WNS20-1.25-Q.Y
WNS20-1.6-Q.Y
Rated steam capacity(t/h)
6
8
10
15
20
Rated working pressure(Bar)
1.25/1.6
1.25/1.6
1.25/1.6
1.25/1.6
1.25/1.6
Rated steam temperature(℃)
194/204
Feed water temperature ℃
20
Boiler Main Body Heating Area(m²)
181.17
190.77
229.95
346.2
467.6
Condenser Heating area(m²)
78.25
108.5
165.3
216.2
360.3
Thermal Efficiency(%)
>98
Fuel available
natural gas、biogas、coke gas,light oil.methanol.biodiesel etc.
Combustion equipment
burner
Total power(kW)
19.5
29.5
33
90.5
Fuel--Natural gas(m³)
432
576
720
1080
1440
Fuel--light oil（L）
399
532
660
997
1204
Max Transportation Weight( t )
19.5
22.6
25.8
34.7
46
Max boiler shipping size:L×W×H(m)
5.93×2.60×3.02
5.85×2.80×3.10
7.65×2.81×3.10
6.95×3.10×3.60
8.30×3.40×4.02
Note: Parameter is for reference only, if any changes should follow the factory technical data.
Fire Tube Steam Boiler Parts
The fire tube steam boiler auxiliary equipment includes burner, water pump, control cabinet, energy saver, condenser, steam cylinder, boiler water treatment equipment, instrument valves and so on. The parts and functions of the steam boiler are as the attached pdf --Steam Boiler Parts and Function. The steam boiler parts diagram is as follow：
Do you know the difference between fire tube steam boiler and water tube boiler?
Fire Tube Boiler and Water Tube Boiler Introduction
There are two main types of boiler used in the industrial engineering world, these are the fire tube boiler and water tube boiler. As the name implies, the difference between the two boilers is where the gases of combustion and water are relative to the boiler tubes.
Water tube boilers have water in the tubes and gases of combustion outside of the tubes.
Fire tube boilers have gases of combustion within the tubes and water outside of the tubes.
Water tube boiler furnaces are surrounded by tubes（pipes）full of water, which allows a large amount of heat from combustion to be transferred to the tubes very quickly.
Fire tube boiler furnaces are usually inside the pressure vessel, but may also be external to the pressure vessel. Exhaust gases of combustion travel through tubes surrounded by water.
Almost all large industrial plants will have a boiler onsite. Most industrial plant boilers are of the fire tube design whilst water tube boilers are more favoured in the power generation industry. Large and very large steam capacity boilers are always water tube boilers.
Company Profile
CN BOILER ENGINEERING SOLUTION LLC is a comprehensive service provider of thermal energy systems in China, devoted to providing customers with one-step thermal energy system solutions by safe, save energy, environmentally, intelligent, and reliable. Main products include industrial boilers(hot water boilers, steam boilers, thermal oil boilers, waste heat boilers, and CFB boilers), steam generators(electric steam generators, electric hot water generators), intelligent control system by PLC control, PLC+PC control or DCS control, remote instrument and valves, and so on. The control system includes industrial boiler control system(oil fired boilers, gas fired boilers, biomass fired boilers, coal fired boilers, electric boilers, waster heat boilers, CFB boilers), PLC deaerator control system, condensate recovery system, reactor control system, heating exchanger control system, hot air boiler control system, etc. The remote instrument and valves include temperature sensors, pressure transmitters, pressure sensors, pressure controllers, liquid level meters, flowmeters, electric control valves, Zirconia, TDS sewage, and so on.
CN Boiler has always adhered to the concept of full electrical integration in the industrial energy industry, that is, integrating strong and weak current systems such as boiler control, boiler room auxiliary machine control, upper monitoring system, and boiler room power distribution system into a complete electrical package, forming a characteristic industrial energy control system (CN Boiler Multi-Boiler Control System, referred to as CN Boiler- MBCS). As the main power source of industrial enterprises, steam boilers are widely used in various fields of industrial processes, such as metallurgy, chemical industry, machinery, papermaking, medicine, the food light industry, and so on. In recent years, the number of applications of gas-fired steam boilers in industrial processes has increased significantly.
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