Texas agency ready to issue air permit for Golden Pass LNG project

Golden Pass Products LLC is nearing the issuance by the Texas Commission on Environmental Quality of a greenhouse gas air permit that would authorize construction of an LNG Export Terminal located at 3752 South Gulfway Drive, Sabine Pass, Jefferson County, Texas.

The TCEQ on April 7 posted to its website an April 3 notice of its intent to approve this air permit.

Golden Pass Products LLC and Golden Pass Pipeline LLC propose to construct and operate a natural gas liquefaction and export plant and termina. It will be located adjacent to the existing Golden Pass operation, which was designed and built to be an LNG import facility, near the Sabine Pass in Southeast Texas. The LNG terminal will have an export capacity of 15.6 million tonnes per annum (MTA) of LNG.

The LNG terminal will operate three new liquefaction trains continuously (8,760 hours per year) using six General Electric 7 EA (with dry low NOx emissions with SCR) gas-fired refrigeration compressor turbines, with two turbines on each train. Each liquefaction train can produce approximately 5.2 MTA.

The proposed project will utilize some of the existing receiving terminal infrastructure to be used in the operations of the export terminal, including the existing LNG storage and marine facilities. The proposed project will include the following new emission points:

  • Six GE Frame 7 gas-fired refrigeration compressor turbines with supplemental duct firing in the HRSGs
  • One LNG storage LP flare
  • One wet/dry flare
  • One auxiliary boiler
  • Four thermal oxidizers
  • Seven diesel-fired essential engine generators
  • One gas-fired essential engine generator
  • One gas-fired compressor (MP1) blowdown vent
  • Circuit breakers
  • Fugitive emissions

The proposed export terminal will consist of a natural gas pretreatment system, a liquefaction unit, utilities and other support facilities. Pipeline quality natural gas will be delivered from interconnecting intrastate pipeline systems. The natural gas will be treated in the pretreatment system to remove carbon dioxide (CO2), sulfur compounds, water, mercury, and heavy hydrocarbons. Mercury will be removed with an adsorber. CO2 will be removed in the acid gas removal unit (AGRU) that uses an amine-based solvent in an absorber column. The CO2 stream from the amine regenerator is further processed in the H2S scavenger and thermal oxidizer. Dehydration of the CO2 free stream exiting the acid gas removal unit is passed through a chiller and two dehydrator beds containing molecular sieve to remove water.

Heavy hydrocarbons are removed from treated gas with four molecular sieve adsorbers and a hydrocarbon condensate removal system. Heavy hydrocarbons are removed from the site by the truck loading operations. The treated natural gas is then sent to the liquefaction process, which is comprised of the following activities: liquefaction where the gas is cooled to become a liquid, compression, LNG storage and loading, LNG circulation system, and vapor handling.

Liquefaction and compression process is comprised of three new trains each with two GE Frame 7 gas-fired refrigeration compressor turbines equipped with heat recovery steam generating units (HRSGs). The LNG will then be stored in an existing LNG storage tank or loaded onto a ship at the existing docks. A new LNG circulation system and vapor handling system will be built with the new liquefaction facility.

New support facilities and utilities include the following activities: steam generation and condensate recovery, electric power generation, fuel gas generation and distribution, flare relief system to dispose of vapors released during operations, and essential generators for backup power in the event of emergencies.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.