Surgil ESIA Report - Volume III - EKN
Surgil ESIA Report - Volume III - EKN
Surgil ESIA Report - Volume III - EKN
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“O’ZLITINEFTGAZ”<br />
open joint-stock company<br />
FS «Complex development of <strong>Surgil</strong> field<br />
with extracting of valuable components»<br />
condensate with gasoline vapors tension by Raide is obtained.<br />
In case excess gas appears in compressor it is discharged to flare system:<br />
Pressure valve up along 1st layer of compressor intake capacitance of outgoing gas for 1 st layer;<br />
Pressure valve of upper product of 2 nd layer of compressor intake capacitance of outgoing gas for<br />
2 nd layer.<br />
Bottom product from stabilizer is sent to reactor where mercury removal occurs and is further<br />
mixed with unstable gas condensate in LPG fractionation column.<br />
Refrigerant system (Zone 111)<br />
Refrigerant system should be installed for additional cooling in GSP. Propane or propylene<br />
refrigerant unit consists of the closed loop where refrigerants are instantly separated, vaporized,<br />
compressed and condensed. The requirements for dehydration freezing at low tempreratures, mercury<br />
filtering device and ethane clearance device should be provided by cycle of regfrigirating medium<br />
Refrigerant compressor consists of three centrifugal compressors with electric engine drive.<br />
Refrigerant compressor protection is provided by the special anti-surging control.<br />
unit.<br />
Purified gaseous ethane is undergoing drying in molecular sieve dryer before entering ethane<br />
Energy resources requirements are given in table below. Pre-design assessment of energy<br />
consumption will be produced and approved during detailed engineering stage.<br />
Table 4 – Combined data on energy resources consumption<br />
Energy resources<br />
Requirement<br />
HP steam, kg/h 2,046<br />
MP steam, kg/h 7,372<br />
LP steam, kg/h 32,362<br />
Cooling water, kg/h 1,304,018<br />
Nitrogen, m 3 /h 801.0<br />
Instrument air, m 3 /h 819.0<br />
HP fuel gas, m 3 /h 18,758<br />
BFW, kg/h 660.0<br />
Demineralized water, kg/h 19,800<br />
Warm, cold and acid flare headers will be assembled in accordance with specific requirements.<br />
Design of preliminary operating conditions for these headers is performed according to the table<br />
below:<br />
Table 5 – Combined data on flare load<br />
Flare<br />
Flow rate<br />
(kg/h)<br />
Preliminary size of header<br />
(inches)<br />
Warm 437,372 30<br />
Book 5. Declaration of environmental impact concerning UGCC construction<br />
16
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