Heat Applications India Private Limited

A large variety of tanks, LPG bullets, pressure vessels, spheres and welded fabrications structures can be subjected to post weld heat treatment by utilizing the" HAL High Velocity Burners. Temporary furnace can be built around the items to be treated or insulation can be applied directly to the outer surface and the item turned into its own furnace. The temperature uniformity that can be achieved by this method ensures that even the tightest standards and specifications are comfortably satisfied. The method used to heat treatment would be by means of a high velocity burner inserted into the vessels by means of suitable man way throughout the heating and cooling cycle the expansion and contraction of the vessels must be closely monitored and controlled to avoid any distortion of the structure.

Post Weld Heat Treatment shall be carried out as per the approved specified cycle of the various vessels, Job executed by HAL - Thickness: 450mm, Diameter: 16 Mtrs, Length: 45 Mtrs and soaking period more than 36 Hrs

HAL can provide specialized services to the power industries. When systems are not ready and time is running out, HAL can supply enough heat to go online. Several units have produced a stable and constant 3 MW on the grid with nothing but HAL heat & supply heat to speed chemical cleaning on natural gas, light oil, fuel gas or propane.
We offer refractory dry out & preheating services to

• CFBC boiler
• Waste Heat Boiler
• RG Boiler/Boiler Cyclones
• Ash Coolers/Combustion beds/other connecting Ducts/Cold Collector

Hal can provide refractory dry out & preheating service to entire cement plants

• Rotary Kiln
• Pre heater
• Kiln Hoods
• Coolers
• Cement Mills
• Raw Mills

HAL is deploying burners in such a way as to ensure uniformity of temperature through out the system, obviating flame impingement or localized overheating. HAL High Velocity Burner System, which is based on the deployment of mass flows of hot gases, can be injected in to the object plant at precisely controlled temperatures.

In cement Industries in particular the refractories that line the thermal area of cement production units, much like fire bricks in a fireplace and castable refractory are designed for efficiency, durability and easy installation. To set and preserve the refractories internal bonding and removing moisture requires very careful controlled dry out & preheating.

Using the hal high velocity system of heating, new or repaired coke ovens can now be brought back into service with far greater control than ever before in 5 to 7 days instead of the usual 2 to 8 weeks. Hal have specially developed equipment for the sole purpose of coke oven heat ups. The specially designed burner outlet nozzle fits into the easily modified coke oven doors. The hal high velocity burner is small enough to fit in to the doorframe work. In most instances the combustion air hoses, gas pipes and electrical cables are fed down the side of the door and through the flash plates to the combustion air blower and flame failure unit situated in the gas alley. Hal can heat up after end wall or through wall repair. The excellent temperature control achieve by the hal system ensures that the ovens go on stream in optimum condition and without wall misalignment or damage. Hal burners are installed in a such way that the pusher and coke wagon can pass easily to service the operating ovens.

HAL have carried out numerous projects in the iron and steel industry in areas such as blast furnaces, hot blast stoves, vacuum degasser heat up, ladles pre-heating, sintering hood dry out, tundish dry outs, torpedoes, sinter plants, soaking pits, billet and slab re-heat furnaces, cowper stoves and slag runners.
Blast Furnace Services

HAL can provide the following services at blast furnace complex ­

• Refractory Dry out & Preheating of stoves.
• Holding the stoves at hot conditions
• Hot Blast main, Bustle pipe Dry out
• Slag runner Dry out

Blast Furnace Dry out

Blast Furnace Heat Up

The initial preheating of blast furnaces is to ensure good heat penetration into the thick refractories of the hearth area, Using the HAL system refractories embedded some 2 ft. below the hearth have reached temperature of in excess of 100°C, with a furnace temperature of 550°C evidencing a thorough initial dry-out. Required quantity of HAL High Velocity Burners depending on the size of the furnace are located at the tuyer level (with an appropriate number of tuyer stocks being temporarily removed). Generally 50% of these burners will be angled upwards, and the remainder fired downwards the hearth.

On occasions HAL have performed a coordinated dry out of the stoves, the blast furnace and the hot blast main and bustle pipe. The startup of individual heating cycles is staggered so that all the units are at the appropriate temperature when the plant operations resume.

Hot Blast Stoves

HAL can provide a careful and gradual heat up of Hot Blast Stoves particularly where Silica materials are involved it is essential if the plant is to achieve a satisfactorily lengthy campaign life. The industry in general recognizes this fact, and often the initial heating process can take some 2 to 3 weeks. The HAL high velocity burners system provides excellent temperature control, and a heat up safely and competently carried out. Normally a restriction is place on the gases being exhausted below the checkers, usually in the range of 300°C. The natural heat absorbing properties of the checkers is sufficient to enable this restriction to be meet, even with temperatures of 1000°C to 1200°C at the dome. To hold 1000°C at Dome till BF Gas connected.

The HAL high velocity burner system has been used for many years for the purpose of applying

 

Controlled heat to new refractories in all types of furnaces and vessels in order to provide an accurately controlled initial heat up to enable the object plant to go on stream with the refractories in optimum condition.

HAL can provide refractory dry out and preheating Services for

• Aluminum Holding Furnaces
• Aluminum Melting Furnaces
• Induction Furnaces
• Tilting Furnaces
• Calciners I Kilns
• Alumina flash Calciners
• Smelters
• Slag Furnaces
• Zinc Pot Furnaces
• Copper Melting Anode Furnaces

The complexity of the typical refinery or by products plant presents many problems in terms of access to the refractory lined sections, and to the special dry out requirements of the highly specialized materials involved.

 

HAL equipment is small enough to make use of the most restricted entry points and powerful enough to ensure systems are thoroughly and uniformly cured.

HAL can provide refractory dry out and preheating services for:

 

• FCCU / SRU
• Reactor / Regenerator
• Orifice Chambers
• Sulphur Condenser
• Main Combustion Chambers / Fired Heaters / Stacks
• Primary Reformer /
• Secondary Reformer
• Spend Catalyst Deflector
• Crude / Vacuum Heaters
• Hydrogen Reformer
• Incinerator