
Refurbished multipoint sonic flare tip
Our multi point sonic pipe flare tips offer a number of additions giving a sophisticated but relatively simple flare. The tip is specifically designed in order to achieve relatively low noise, low radiation, reliable ignition, long life and elimination of problems caused by high winds.
They typically operate at pressures up to 6.0 barg, are relatively easy to manufacture and provide a good reliable method of high-pressure gas disposal whether by venting or flaring. Our multi point sonic pipe flare provides the operator with a robust and reliable flare tip that will typically exhibit long life time. Argo Flare Services can supply new bespoke flare tips or refurbishments of other OEM flares to suit the operator’s specific platform or site conditions.
Flare Tip
The basic flare tip is fabricated in heat resistant 316L SS, 310S stainless steel or 800H materials. Upgrades to higher heat resistant materials are also available when the operating conditions are more onerous than normal. The main body consists of a central pipe with a number of sonic discharge arms usually between 4, 6 or 8. Where there is a Low Pressure flare tip, this can also be incorporated into the multi point HP flare arrangement.
Sonic Discharge Nozzles & Flame Stability
Each arm has a sonic discharge nozzle fitted. We typically manufacture this from plate rather than using a casting to improve the tip life cycle. The nozzles provide reliable stabilisation of the flame at all flows and also ensure efficient operation, reliable flame ignition and elimination of flame lift at high gas discharge velocities and high winds. The nozzles have a series of lugs behind which are drilled a number of gas bleed holes. This allows some of the gas to escape the nozzle and effectively multiplies the pilot heating power considerably and greatly contributes to flame stability across all operating and atmospheric conditions.
Our sonic discharge nozzles are designed to withstand the rigours of low level continous flaring
In certain circumstances a central duct will be employed which is fed with HP gas and let down via a small diameter tube connected to the top of the main flare body. Pilots can be situated around the periphery of the central duct in order to take advantage of the low velocity gas stream for ignition.
Pilots and Igniters
The flare tip is normally fitted with pilots manufactured in heat resistant steel, incorporating a nozzle designed for maximum pilot flame stability, an inspirator assembly for regulating the air and gas mixture to the pilot and the igniter which fits into the nozzle directly. An interface flange is typically provided on the pilot inlet piping for connection to the fuel gas pipe manifold. The tip is equally capable of being ignited with a Flame Front, High Energy, High Tension or Pellet type ignition system.
Typical Multipoint Sonic Pipe Flare Information
Jet Nozzle Size |
6” NB |
8” NB |
10” NB |
6” NB |
8” NB |
10” NB |
Qty Nozzles |
6 |
6 |
6 |
8 |
8 |
8 |
Typical Weight (kg) |
1250 |
1600 |
2250 |
1750 |
1900 |
2500 |
Typical Fuel Gas Purge Rate (Nm³/h) |
11.40 |
20.20 |
31.60 |
15.20 |
27.00 |
42.10 |
Typical Nitrogen Purge Rate (Nm³/h) |
8.55 |
15.20 |
23.70 |
11.40 |
20.30 |
31.60 |
Typical Capacity (kg/h)* |
253,000 |
446,000 |
710,000 |
338,000 |
595,000 |
947,000 |
* Typical capacity at 5.0 barg tip back-pressure with a molecular weight of 25 kg/kgmol and an operating temperature of 30ºC.