LNG processes

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Competences in Gas

Optimized production

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Optimize productivity Enhance your productivity in natural gas processing, liquefaction and LNG facilities

Ultrasonic flow measurement in natural gas processing plants Reliable flow measurement is crucial for optimized natural gas processing and to minimize operational challenges. Inherent challenges exist due to wet gas conditions and varying compositions of feed gas. Accurate measurement of gas flow into dehydration and sweetening units is essential for better process efficiency and to minimize problems associated with re-boiler overload and chemical losses. • Process Ultrasonic gas flowmeter from Endress+Hauser precisely measures dry and wet gases in all gas processing steps including sweetening, dehydration, fractionation, and NGL recovery • Greater accuracy and process control thanks to real-time pressure and temperature compensation • Powerful process control from advanced gas analysis including volume flow, corrected volume flow, mass flow, energy flow, calorific value, Wobbe index etc. • Process reliability and high operational safety thanks to continuous self-diagnosis and device verification with Heartbeat Technology

Sweet natural gas exiting the amine treatment unit is saturated with water vapor. Some water can be removed by passing the wet gas through a knock-out drum, followed by compression and cooling. Molecular sieve dehydration is then used to obtain the very low H 2 O concentrations (< 0.1 ppm) required for cryogenic processes in NGL recovery units and for LNG production. Our TDLAS analyzers support you in this task as they help detect adsorbent bed saturation and breakthrough. • Patented Differential Spectroscopy technique measures H 2 O at sub-ppm levels for rapid detection of adsorbent bed moisture breakthrough • Laser-based measurement is highly selective and accurate for H 2 O in natural gas and is unaffected by methanol and other contaminants • Integrated permeation tube supports automated analyzer validation checks On-line monitoring of trace-level H 2 O

Reliable level measurement in gas sweetening units

Raw natural gas from reservoirs contains varying amounts of acid gases (H 2 S and CO 2 ). Gas sweetening units remove acid gases us ing a chemical absorption process. A typical process unit includes contactor (absorption) and stripper (distillation) columns. Effec tive level control in these columns is vital for stable operation to ensure uniform flow of amine out of the unit. Guided wave radar technology offers unique benefits ensuring smooth operation and high productivity of the unit. • Reliable measurement even with changing product and process conditions • No maintenance: no moving parts unlike mechanical level instruments • Easy commissioning and diagnostics from HistoROM data management • Seamless integration into control or asset management systems

+20% extended cycle time can be gained between molecular sieve bed regeneration using TDLAS