Projects/ Petroleum chemical industry

Automated control system of main flaring system and flaring system of acid gas

Client:”Atyrau Oil refinery” Co.Ltd.

Proceduredescription:
Main flare system ensures safe extraction of hydrocarbonic vapor from processing units in cases of disturbances of process conditions, emergency cases, during start-up and shutdown periods.
Main flare system comprises existing and new technological units which will be placed at oil refinery site, except of sulfur production facilities.
Units comprised by the system:

Existing units:
- ЭЛОУ-АВТ-3(ELOU-ABT-3) unit;
- delayed coking unit;
- charred coal baking unit;
- (ЛГ(LG)-35-11/300) reforming unit.

New and modified units:
- ЭЛОУ-АТ-2(ELOU-AT-2) unit;
- combined unit (gasoline and diesel fuel purification/ deparaffination units);
- hydrogen unit.

Moreover, main flare system collects discharges from gas-reagent facility.
Two interchangeable flare stacks (operating and reserved) are designed to provide non-stop operation.
Flare unit comprises:
- main collector O= 1200 mm;
- С-1, С-2 flare gas separators;
- hydrocarbonic condensate pumps Н-1, Н-1а;
- separator – flare stack collectors;
- drainage tank for condensate from flare stack separators, for pipeline and pumps drainage;
- ФС-1, ФС-2 flare stacks.
Acid gas flare system ensures safe extraction of >8% hydrocarbonic gases, during disturbances of process conditions, emergency cases at sulfur production facility.
Automation system requirements:

Automatic Process Control System works out the following tasks:

• realizes centralized checking of technological parameter values, condition of the equipment;
• supports the technological parameters on preset level, fixes parameter declination from preset;
• realizes checking of parameters dangerous declination, determining explosion and fire risk of production process;
• issues controlling actions for executive means preventing occurrence or development of emergency situations with information displaying at operator’s workstation;
• conducts atmosphere gas condition monitoring in dangerous areas, gives danger alarms, management signals for blocking and displays the information to operator;
• conducts anti-fire control;
• conducts archiving of technological parameters;

Solution and characteristics of automation system:

Automation system is based on two SIMATIC S7-300 controllers with CPU 315-2DP central processor and ET200M input/output station for data collection from sensors and executive mechanisms.
Upper level appears as technologist-operator workstation based on WinCC v 6.0 installed PC.
Communication between controller and PC is organized via industrial MPI network

Project implementation period:
Start-up: 2006.

About “SINETIC” Co.Ltd engineering company

  Address:
Ust – Kamenogorskб 181/3, prospect Abaja, office 406

  Phones:
(7232) 55-02-04 Reception
(7232) 55-01-20 Director
(7232) 55-03-80 Technical Director
(7232) 55-08-32 Vice technical director
(7232) 23-00-05 Commercial department
(7232) 55-02-60 Technical department
(7232) 23-00-09, 23-00-12 Delivery group

  Fax: (7232) 55-02-04
  E-mail: ustkam@sinetic.kz