Technical Specifications for Natural Gas Purification Unit Used For Wellhead Gas Treatment
The entire process of gathering oil, associated natural gas, and other products produced by dispersed oil wells, and exporting qualified oil and natural gas to refineries and natural gas users through necessary processing and initial processing is called oil and gas gathering and transportation. It mainly includes processes such as oil and gas separation, oil and gas metering, crude oil dehydration, natural gas purification, crude oil stabilization, and light hydrocarbon recovery.
Process Overview
Functioning as the critical nexus between upstream gas production and downstream applications, the Natural Gas Purification Unit employs integrated physico-chemical processes to remove acid gases (CO₂/H₂S), water vapor, mercury, and heavy hydrocarbons. Compliance with GB17820-2018 pipeline specifications requires:
- Acid gas removal efficiency ≥99.5%
- Water dew point ≤-20℃ (@6.3MPa)
- Total sulfur content ≤30mg/Nm³
Core Processing Modules
- Desulfurization & Decarbonization Unit
- Amine Absorption: MDEA (Methyldiethanolamine) solution reduces H₂S from 3,000ppm to <5ppm in absorber columns
- Physical Adsorption: Selexol™ technology for high-CO₂ gas (>15%), achieving 40% lower energy consumption vs. amine processes
- Sulfur Recovery: Three-stage Claus process + SCOT tail gas treatment, total sulfur recovery ≥99.9%
- Molecular Sieve Adsorption: 4Å sieves maintain H₂O content <1ppm at 4-6MPa
- TEG Absorption: Triethylene glycol units for high-pressure gas (>8MPa), achieving dew point depression up to 50℃
- Sulfurized activated carbon beds reduce Hg to <0.001μg/Nm³
- Multi-stage filtration (5μm→1μm) for solid contaminants
Contact:
Sichuan Hengzhong Clean Energy Equipment Co., Ltd.
Phone/WhatsApp/Wechat : +86 177 8117 4421
Website: www.rtgastreat.com Email: info@rtgastreat.com
Address:No. 8, Section 2 of Tengfei Road, Shigao Subdistrict,Tianfu New Area, Meishan city, Sichuan China 620564