دات نت نیوک
پیشرو در بومی سازی نیازمندی های صنعت برق و انرژی 

electricity production by flare gas recovery

In the global competition to produce more with less expensive, whose industries will be able to compete that with more Research, find solutions to reduce energy consumption and prevent pollution of the environment.

Oil refining, gas and petrochemical industry, which is one of the major energy consumers cannot be excepted.  In most chemical processes, such as oil and gas refineries, one of the safety devices is pressure relief via gas relief network like flares. In these processes additional gas will be sent to flare system to be burned.

A large amount of these gases are valuable fuel, and in some cases can be used in different units.

Burning these gases can make environmental effects like greenhouse gas emissions, noises, unpleasant smell and totally is waste of economic resources.

The way the energy loss in the refinery flared system, are "the greatest amount of environmental pollutants can be released from the system, so optimizing performance and improve this sector is still very important.

According to the World Bank, 150 million cubic meters of gas annually flared and Iran is third country in this area.

Considering importance of gas in terms of energy and environmental issues, finding ways to retrieve these gases is essential. One of the most economical solutions in this field is flare gas recovery system for small-scale fuel power plants (FGRS). in this solution, electrical and thermal energy will be generated from the sources that is currently being wasted.

FASBA company based on technical knowledge and valuable experiences in the field, ready to offer consulting services, feasibility and implementation studies.

 

Proposed system overview

The proposed plan includes four parts as below

  • Flare Gases Analysis

Most important in the production of electricity from gas flare system design is that the DG inside existing flare system, don’t have any effect the performance of the emergency system causing flared. So, this system should be designed considering this assumption.

 

  • Flared Gas Compression

In second phase,  a particular system for the first stage gas compression and gas recovery is required to transfer gas to DG (Distribution Generation) units. It sometimes necessary to make some changes to existing flare system and installing compressors to compress flared gas.

 

  • Recovered gas transfer to DG

In this stage selecting proper pipelines regarding its material and size is so important. Because of existence of Sulphur in flared gas, all pipelines and connection should be anti-corrosion and suitable for designed pressure and flow. 

  • Designing suitable DG

DG can be a gas turbine or gas engine, but if we want to use flare gas as a fuel, gas engines must be used because they are more efficient than gas turbines and have better functionality with flare gas. So proper motor capacity considering amount of recovered gas should be selected.