What is the purpose of snuffing steam in fired heater?

What is the purpose of snuffing steam in fired heater?

Snuffing Steam System: One of the methods is the elimination of required air for combustion process. In the emergency situation the steam is injected to the heater convection zone. There are lots of steam nozzles in different location which will start to spray the steam and flame out the heater burners.

What is Bridgewall temperature?

The temperature of the combustion product flue gases leaving the radiant section is typically between 700 and 1,000 °C, and is commonly termed the bridgewall temperature.

What are the main features of fired heater?

So, the main purpose of fired heaters is to raise the temperature of the process fluid that flows through the tubes. The heat energy is supplied by combusting fuels….A fired heater consists of:

• Casing.
• Tubes.
• Return bends.
• Tube supports.
• Burners.
• APH/SAPH.
• ID & FD fans.
• Pilot.

What is fired heater draft?

The difference between atmospheric pressure and the pressure existing in the furnace or flue gas passage of a boiler is termed as draft. Draft can also be referred to as the difference in pressure in the combustion chamber area which results in the motion of the flue gases and the air flow.

What is Arch in fired heater?

radiant section – portion of the heater in which heat is transferred to the tubes primarily by radiation. arch – flat or sloped portion of the heater radiant section opposite the floor. convection section – portion of the heater in which the heat is transferred to the tubes primarily by. convection.

What are the benefits of fire heaters?

The Advantages of an Indirect Fired Heater

• Fresh, Clean Air – you don’t have to worry about breathing in toxic elements such as carbon monoxide or gas.
• Maximum Recirculation – one of the best ways to save money on a heater is to keep the air recirculating inside.

What are the benefits of fired heaters?

Highly efficient: In a direct fired heater, 100% of the fuel burned is used to supply warmth. That efficiency lowers fuel costs. Most models have a built-in thermostat for precise heat output. More power in a smaller unit: A direct fired burner can create the same amount of heat than a larger indirect heater.

What is a burner tile?

The burner tile is a refractory piece that shapes and stabilizes the flame. One or more burner tips are used to inject the fuel into the air stream. They are connected to the fuel risers, which, in turn, are connected to the fuel manifold.

Who uses a furnace?

A furnace is a device that produces heat. Not only are furnaces used in the home for warmth, they are used in industry for a variety of purposes such as making steel and heat treating of materials to change their molecular structure. Central heating with a furnace is an idea that is centuries old.

What is refinery fire heater?

What is a fired heater in a refinery? Fired heaters, or process heaters, are important to refineries and petrochemical plants because they heat and vaporize the hydrocarbon fluids to create necessities like gasoline, diesel, and jet fuel.

What is a snuffing steam question?

Snuffing Steam Questions. They are frequently used with fired heaters where a combustible process fluid is being heater by radiant heat from a controlled heat release (fire). If the tube carrying the process fluid develops a leak, you have an uncontrolled (and destructive) release of combustible fluid into the flame.

What is a snuffing steam connection on a gas heater?

“Snuffing steam connections are supplied by the heater manufacturers, generally in the combustion chamber and header boxes. The control point or snuffing steam manifold is generally located at least 15 meters away from the heater, is supplied by a live steam header and is ready for instantaneous use.

Do I need steam to’snuff out’a fire?

As ‘hpe’ has rightly mentioned ‘snuffing, steam is required to ‘snuff’ out a fire in the heater convection zone.

What is the best gas for Purging and snuffing?

Any inert gas may be used other than steam for this very same purpose. However, specifically for heavy oil fired heaters where steam is already utilized as an atomizing medium, steam is the only logical choice for purging & snuffing. Hope this helps.