Passaro Exports based in Chennai is one of the leading suppliers of bulk industrial fuels like furnace oil and light diesel oil.
FURNACE OIL (IS : 1593 – 1982)
| S.No. | Characteristic | Requirement For | Method of Test | |||
| Grade LV | Grade MVI | Grade MV2 | Grade HV | Ref to [P : ] of IS:1448* | ||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| Acidity, inorganic | Nil | P : 2 | ||||
| Ash, percent by mass, Max | 0.1 | P : 4 (Method A) | ||||
| Gross, calorific value | Not limited, but to be reported (See Note 1) | P : 6 (for reference) and P : (for routine) | ||||
| Relative density at 15/15oC | Not limited, but to be reported (See Note 2) | |||||
| Flash point, [Pensky martens (closed)], Min | 66oC | P : 21 | ||||
| Kinematic viscosity in centistokes at 50oC, Max | 80 | 125 | 180 | 370 | P : 25 | |
| Sediment, percent by mass, Max | 0.25 | P : 30 | ||||
| Sulphur, total, percent by mass, Max (See Note 3) | 3.5 | 4 | 4 | 4.5 | P : 33 (for reference) and P : 35 (for routine) | |
| Water content, percent by volume, Max | 1 | P : 40 |
Note 1:Normally the gross calorific value is of the order of 10 000 cal/g.
Note 2: Fuel oil for marine uses in diesel engines shall not exceed a limit of 0.99.
Note 3: Recognizing the necessity for low-sulphur fuel oils in some specialized uses; a lower limit may be specified by mutual agreement between the purchaser and the supplier.
BUNKER FUEL
Furnace oil is a dark viscous residual fuel obtained by blending mainly heavier components from crude distillation unit, short residue, and clarified oil from fluidized catalytic cracker unit.
Bunker fuel, furnace oil, Fuel oil are other names for the same product. Though Fuel oil is a general term applied to any oil used for the generation of power or heat, Fuel oil can include distillates and blends of distillates and residue such as Light Diesel Oil.
Viscosity is the most important characteristic in the furnace oil specification. It influences the degree of pre-heat required for handling, storage, and satisfactory atomization. If the oil is too viscous it may become difficult to pump, burner may be hard to light and operation may be erratic.
Poor atomization may result in carbon deposits on the burner tips or on the walls. The upper viscosity limit for furnace oil is such that it can be handled without heating in the storage tank is excepting under server cold conditions. Pre-heating is necessary for proper atomization.
It is a very rough indication of the lowest temperature at which Furnace Oil is readily pumpable. In the specification, the pour point of Furnace oil is not stipulated. However, for Furnace oil manufactured indigenously and for imported parcels, the pour point is such that current supplies normally can be handled without heating the fuel oil handling installation.
Water may be present in free or emulsified form and can on combustion cause damage to the inside furnace surfaces especially if it contains dissolved salts. It can also cause sputtering of the flame at the burner tip. The water content of furnace oil when supplied is normally very low as the product at the refinery site is handled hot and a maximum limit of 1% is specified in the standard.
Furnace oil is a blend of residues that contains some quantity of sediments. These have an adverse effect on the burners and cause blockage of filters etc. However, the typical values are normally much lower than the stipulated value of a maximum of 0.25 percent, by mass.
Ash is an incombustible component of the furnace oil and is expressed as a percentage mass of the furnace oil sample. Ash consists of extraneous solids, residues of organometallic compounds in solution, and salts dissolved in water present in the fuel. These salts may be compounds of sodium, vanadium, calcium magnesium, silicon, iron, etc.
Ash has an erosive effect on the burner tips, causes damage to the refractories at high temperatures, and gives rise to high-temperature corrosion and fouling of equipment.
Sulphur determination includes burning of a known quantity of oil, treating the sulphur oxidation products formed during combustion, and weighing of sulphur in the form of sulphate. Heavy ends of crude distillation include Furnace oil, Low sulphur Heavy Stock (LSHS), Residual Fuel Oil (RFO), Lube oils, Bitumen, Petroleum coke, Paraffin wax, other waxes, etc.
Used as an industrial fuel, Furnace Oil (FO) is a dark viscous residual fuel obtained by blending mainly heavier components from crude distillation unit, short residue, and clarified oil from fluidized catalytic cracker unit.
Internationally Furnace Oil is known as Fuel Oil and is traded in many varieties based on its specifications of viscosity and sulfur percentage. The most common varieties are 180 CST & 380 CST with 2.0% and 3.5% sulphur.
The public sector refiners produce a major share of furnace oil consumption requirements in India. The imports of furnace oil account for about 5-10% of total consumption.
Having been used across a plethora of industries, it is a very important commodity and the pricing, unlike some other petroleum products, is not administered by the government and is a freely priced commodity.
Source: https://petrobazaar.com/furnace-oilfo-10127.html
Passaro Exports
87, Babu Nagar III Main Road,
Medavakkam,
Chennai 600100.
Tamilnadu, India
+91 98844 80980
sales@passarotrading.com
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