Development of the ZR-LNG Process for Mid-scale liquefaction and monetization of stranded gas reserves

GasConsult Limited开发了一种新的天然气液化技术Zero RefrigerantLNG(ZR-LNG)并获得了专利。该技术高度差异化；与竞争工艺不同，它不使用外部制冷剂，而是依赖于在优化的膨胀机系统中使用天然气原料来实现制冷。这消除了某些工艺设备，从而降低了成本和占地面积。补充制冷剂是低成本的天然气体，而不是进口的氮气或液态碳氢化合物的混合物，这使得该工艺特别适合偏远地区和欠发达经济体。ZR-LNG系统是一种高效的双冷工质流程，与双氮膨胀机流程相比，效率几乎相当于相同的基本负荷，而且效率提高了30%。这些独特的特征提供了将原本搁浅的天然气货币化的潜力。Innovate UK授予GasConsult一笔赠款，允许在博茨瓦纳的一个煤层气勘探项目中进行ZR-LNG概念的工程开发。此后，可以考虑在未来几十年内在全球范围内开发许多新的液化天然气项目。

GASCONSULT LIMITED has developed and patented a new natural gas liquefaction technology, Zero RefrigerantLNG (ZR-LNG). The technology is highly differentiated; unlike competing processes it uses no externalrefrigerants, relying on use of the natural gas feed in an optimised system of expanders to effect refrigeration.This eliminates certain process equipment reducing cost and footprint. Make-up refrigerant is low cost naturalgas as opposed to imported nitrogen or a cocktail of liquid hydrocarbons making the process particularly suitedto remote locations and less developed economies. The ZR-LNG system is highly efficient, almost equal tosophisticated base load dual refrigerant processes and fully 30% better than the dual nitrogen expanderprocess. These unique features offer the potential to monetize otherwise stranded natural gas. Innovate UK hasawarded Gasconsult a grant to permit engineering development of the ZR-LNG concept for a coal bed methaneprospect in Botswana. Thereafter it can be considered for the many new LNG projects expected to bedeveloped world-wide in the coming decades.