Gas Fired Non IBR Steam Boilers

Description of Gas Fired steam boiler

A Gas Fired steam boiler is an industrial heating system designed to generate steam by burning natural gas or propane as fuel. The boiler is a closed vessel that contains water, which is heated by the gas burner to produce steam. The steam is then collected in the steam space above the water level and can be distributed to the various points of use through pipes.

The gas-fired steam boiler operates in a similar way to other steam boilers, such as oil-fired or coal-fired boilers. However, it uses natural gas or propane as a fuel source, which makes it a cleaner and more efficient option than some other types of boilers.

One of the advantages of gas-fired steam boilers is that they are relatively easy to install and operate. They are also more environmentally friendly than other types of boilers, as natural gas is a cleaner burning fuel than coal or oil.

Gas Fired Boiler Working Principle

A gas fired boiler operation is carried out by burning natural gas or propane in a burner to heat up the water contained within the boiler. The heated water turns into steam, which is then collected in the steam space above the water level and is distributed to the points of use through pipes.

Here is a step-by-step breakdown of how a gas-fired steam boiler works:

1. Fuel Supply: A gas-fired steam boiler is fuelled by natural gas or propane. The gas supply is fed into the burner, which mixes it with air in the combustion chamber.
2. Ignition: The burner is ignited, either manually or automatically, to start the combustion process.
3. Combustion: The mixture of gas and air burns in the combustion chamber, producing a hot flame that heats up the heat exchanger.
4. Heat Transfer: The heat from the flame is transferred to the water in the heat exchanger, raising the temperature of the water.
5. Steam Generation: As the water temperature rises, it turns into steam, which rises to the top of the boiler and is collected in the steam space.
6. Steam Distribution: The steam is distributed to the various points of use through pipes, where it is used for various processes or heating applications.
7. Condensation: The steam that is not used is condensed back into water and returned to the boiler for further heating.
8. Safety Features: Gas-fired steam boilers are equipped with various safety features, such as pressure and temperature sensors, to prevent accidents and ensure safe operation.

In summary, a Gas Fired steam boiler works by burning natural gas or propane to heat up water and generate steam, which is then distributed to the points of use through pipes.

Advantages of Gas Fired Steam Boiler

1. Pressure Part Assembly: The offered gas-fired steam boiler includes one pressure part assembly, which comprises a fully fused welded shell with a wetback furnace and two sets of convection smoke tubes. The front doors of the assembly are hinged, and they are lined with ceramic or high alumina firebrat for added protection. The smoke chamber features a soot cleaning door, while the boiler shell has one manhole and two mud holes for internal inspection. Additionally, there is an access opening at the back of the IRC to inspect the furnace’s interior. The assembly also features two fusible plugs for mechanical safety in case of very low water levels.
2. LPG Fired Burner Assembly: The gas-fired steam boiler also includes one LPG fired burner assembly with an AR gear ratio for full modulation.
3. Combustion Air Fans: To create positive draught inside the boiler, the gas-fired steam boiler has one backward curved design forced draft combustion air fan with a motor.
4. Feed Water Pumps: Two highly efficient centrifugal multi-stage, vertical feed water pumps with a motor are also included in the boiler. The pump’s impellers and shaft are made of stainless steel for added durability.
5. Control Panel Box Assembly: 
   1. Panel box specification: – The control panel box assembly for the gas-fired steam boiler includes a power cum control panel, free-standing type, confirming to IP 42 with necessary starters required. The panel is made out of 14 / 16 SWG CRCA sheets and painted with polyurethane paints, synthetic enamel, or powder-coated. The power section is provided with a main incomer isolating switch, and the required switch gears for all the feeders are housed in the power section. The control panel also features one temp indicator and switch to indicate the boiler stack temp. This switch gives a high stack temp alarm, lamp indication, and burner trip interlock. Additionally, there is one sequence controller for the burner management system. 
   2. Set of instruments: – The set of instruments includes one pressure indicator to indicate steam pressure, one pressure switch/temp relay for stepless modulation, one pressure switch for burner ON/OFF control, one pressure switch to sense low combustion air pressure, and one pressure switch to sense low fuel pressure. 

1. Accessories: 

1. Piping: – The gas-fired steam boiler also includes piping and a set of valves, mountings, and fittings. The piping comprises one set of feed piping to connect feed water pumps to the boiler, along with a set of valves and fittings to be fitted with the feed piping. There are two stop valves on the feed water line and two non-return valves on the same line. 

Set of valves mountings & fittings for the boiler: – The set of valves, mountings, and fittings for the boiler includes one main steam stop valve, two spring-loaded single port safety valves, one air vent valve, one blowdown valve, one main steam pressure gauge, two plain tubular gauge glasses along with inbuilt isolation and drain valves, two float-operated magnetic water level controllers, and three isolation valves for the main steam pressure gauge, inspector pressure gauge isolation valve, and drain valve for two float-operated level controllers.

Application of Gas Fired Non IBR Steam Boilers

Gas Fired Non IBR Steam Boilers are used in a wide range of industrial applications for various processes that require steam as a source of heat or energy. Some common applications of Gas Fired Non IBR Steam Boilers include:

1. Food Processing: These boilers are used in food processing industries for sterilization, cooking, and other processes that require steam.
2. Chemical Industry: Gas Fired Non IBR Steam Boilers are used in the chemical industry for processes such as distillation, evaporation, and reaction.
3. Pharmaceutical Industry: These boilers are used in the pharmaceutical industry for various processes such as sterilization, drying, and packaging.
4. Textile Industry: Gas Fired Non IBR Steam Boilers are used in the textile industry for processes such as dyeing, printing, and finishing.
5. Paper Industry: These boilers are used in the paper industry for processes such as pulping, drying, and finishing.
6. Rubber Industry: Gas Fired Non IBR Steam Boilers are used in the rubber industry for vulcanization and other processes that require steam.
7. Refineries: These boilers are used in refineries for processes such as distillation, cracking, and other thermal processes.
8. Hospitals: Gas Fired Non IBR Steam Boilers are used in hospitals for various applications such as sterilization, laundry, and kitchen operations.
9. Power Generation: These boilers are used in power generation facilities to produce steam for turbines that generate electricity.