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Lavan Oil Refinery

The Lavan oil refinery has a nominal capacity of 50,000 barrels per day, currently with a capacity

of 55,000 barrels per day. The units in the refinery are:

1. Crude Oil Distillation Unit

2. Catalytic converter unit

3. Isomerization unit

4. Liquid gas recycling plant

5. Amine unit

6- Distillation unit of gasoline

7. Sulfur production unit

8- berth

9) Secondary Services Unit






- Distillation unit
This unit consists of two distillation units 1 and distillation 2 with a nominal capacity of 50,000
 barrels per day. Which is currently in service with a capacity of 55,000 barrels per day.
The units are supplied with Lavan Light Oil and South Pars Gas Condensate. Output products from
 this unit include LPG, kerosene, heavy naphtha, light naphtha, gas oil, petrol, some of which are
 sent to lower units for improvement in specifications.





2. Catalytic converter unit
This unit consists of two sets of catalytic converters of 300 and 1300 which produces
 heavy naphtha produced at the distillation unit to these units. The heavy naphtha
 produced in the distillation unit after refining in the NAFTA hydrogenation unit is shipped
 to the catalytic converter unit platform, and after catalytic reactions, the petrol platform
 is produced with a Euro 4 petrol specification. The capacities of these two units are 797
 and 857 cubic meters per day, respectively, in the gasoline platform.





3. Isomerization unit
The purpose of this unit is to improve the octane number to produce higher octane gasoline.
 The light naphtha produced in the distillation unit after filtration at the hydrogen
 purification unit of this unit is sent to the isomerization unit, and with linear linear
 paraffins being branched, the octane number is increased from an approximate value
 of 65 to 87. The unit is capable of producing 1093 cubic meters per day of isomorph gasoline.



4. Opened liquid gas unit
The LPG produced in the distillation unit after mixing with LPG produced in the catalytic converter 
units is sent to this unit to improve and reduce the pollution. The production capacity of this unit
 is 180 tons per day refined LPG.
5. Amine unit
This unit consists of two units of amine 400 and 1900 units to reduce H2S in the exhaust gases
 from operational units and make these gases suitable for use as gases in operational units.
 The capacity of these units is 1600 Nm3 / hr and 4137 Nm3 / hr, respectively.




6- Distillation unit of gasoline
The purpose of the desulphurisation unit is gasoline, which produces the following products 
using crocin (kerosene) and gasoline produced from atmospheric distillation as well
as diese
l oil produced from distillation under vacuum.- Refined jet fuel with a sulfur content of less than 40 ppm,
- Refined gasoline with a sulfur content of less than 50 ppm,
- Nafta heavy (Wild Naphtha)
The designed capacity for a hydrotreatment unit is 17,733 barrels per day (97,980 kg / h).
7. Sulfur production unit





This unit has been designed to convert all sulfur compounds produced to liquid sulfur. The input to
 the unit is from the amine sweetening unit (unit 1900) and the sour water purification unit (unit 1800).
Sulfur Recovery Unit includes the following sections:
- Claus section
- TAIL GAS filtration section (TGT)
- Distillation section of liquid sulfur
- Burning furnace
- The overall yield of sulfur recovery from the recycling segments of Sulfur and TGT is 99.5%.
The design capacity of the different sections is 25 T / D of liquid sulfur without gas and has
 the ability to produce in stable conditions in the range of 100-30% design.



8- berth
All products of production and supply of gas condensate are transmitted or received by two
 oil pipelines of the National Iranian
 Oil Company of the Offshore Area of
​​Lavan and the company's pier.
9. Service Utility
This unit is one of the most important refineries and is divided into the following sections:
9-1: Providing industrial water and wastewater:
For the supply of industrial water for use in operational units, steam generation in boilers,
 as well as refinery drinking water, there
 are 4 hydrocarbon aggregates with a total capacity of 350 cubic meters per hour.




9-2: Steam supply:
In order to supply different types of steam at different pressures for use in operational units
 and power generation and fresh water units, eight boilers with a nominal capacity of 470
 tons per hour are used.
9-3: Providing Air and Instrumentation Air:
For air supply of instrumentation, as well as air, Plant 4 air compressors with a total
 capacity of Nm3 / hr 4300 and 3 air-conditioners with a total capacity of 1110
 Nm3 / hr are in service.
9.4: Generation of electricity:
Four power generators with a total nominal capacity of 28 megawatts and four gas turbine generators
 with a total nominal capacity of 11.5 megawatts are used to generate electricity in the refinery.




9.5: Castile unit:
The purpose of this unit is to store cassettes for use in downstream units, including units
 of 1300, 1500, 1600 and 1700. A cosmetic solution with two concentrations of 10 wt%
 and 40 wt% is created in this unit. This unit is designed for storing Ton / hr 67.2, 40% by weight.

9.6: Waste Water Treatment Plant:
The sour waste water returns from refineries to refine and return to units or sea to this unit. 
This unit has a capacity of 317 M3 / hr.

9.7: Palischer Unit:
This unit is used to purify and remove contaminants in the return bands from the operating units
 and provide the specifications for using these bands as industrial water. This unit consists of
 two parts HOT and COLD, each of which has a capacity of 120 M3 / hr and 182 M3 / hr, respectively.





9-8: Ozone Unit:
In order to reduce the microbial load and complete purification of seawater, ozone oxidizing
 agent is used to prevent the introduction of biological and living organisms into refinerie
s and to prevent the growth of oysters and clogged heat exchangers. In this unit,
nitrogen is extracted from the inlet air, and after oxygen saturation, the gas collection
 is passed through a high voltage electric field, which converts a large percentage of the
oxygen gas into the ozone.