Process Integration and Optimization of CO2 Removal from Natural Gas Using Cryogenic Distillation System

2019 ◽  
Author(s):  
Amiza Surmi
Keyword(s):  
Natural Gas ◽  
Process Integration ◽  
Co2 Removal ◽  
Distillation System ◽  
Cryogenic Distillation

Gas Turbine Combined Cycle With CO2-Capture Using Auto-Thermal Reforming of Natural Gas

2000 ◽  
Author(s):  
Thormod Andersen ◽  
Hanne M. Kvamsdal ◽  
Olav Bolland
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Process Integration ◽  
Combined Cycle ◽  
Co2 Removal ◽  
Gas Turbine Combustor ◽  
Chemical Absorption ◽  
Fuel Gas ◽  
The Impact ◽  
Water Gas

A concept for capturing and sequestering CO2 from a natural gas fired combined cycle power plant is presented. The present approach is to decarbonise the fuel prior to combustion by reforming natural gas, producing a hydrogen-rich fuel. The reforming process consists of an air-blown pressurised auto-thermal reformer that produces a gas containing H2, CO and a small fraction of CH4 as combustible components. The gas is then led through a water gas shift reactor, where the equilibrium of CO and H2O is shifted towards CO2 and H2. The CO2 is then captured from the resulting gas by chemical absorption. The gas turbine of this system is then fed with a fuel gas containing approximately 50% H2. In order to achieve acceptable level of fuel-to-electricity conversion efficiency, this kind of process is attractive because of the possibility of process integration between the combined cycle and the reforming process. A comparison is made between a “standard” combined cycle and the current process with CO2-removal. This study also comprise an investigation of using a lower pressure level in the reforming section than in the gas turbine combustor and the impact of reduced steam/carbon ratio in the main reformer. The impact on gas turbine operation because of massive air bleed and the use of a hydrogen rich fuel is discussed.

scholarly journals Process Simulation and Cost Evaluation of Carbon Membranes for CO2 Removal from High-Pressure Natural Gas

Membranes ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 118 ◽  
Author(s):  
Yunhan Chu ◽  
Xuezhong He
Keyword(s):  
Natural Gas ◽  
Cost Evaluation ◽  
Co2 Removal ◽  
Carbon Membrane ◽  
Carbon Membranes ◽  
Feed Pressure ◽  
Gas Sweetening ◽  
Processing Cost ◽  
Future Work ◽  
Natural Gas Sweetening

Natural gas sweetening is required to remove the acid gas CO2 to meet gas grid specifications. Membrane technology has a great potential in this application compared to the state-of-the-art amine absorption technology. Carbon membranes are of particular interest due to their high CO2/CH4 selectivity of over 100. In order to document the advantages of carbon membranes for natural gas (NG) sweetening, HYSYS simulation and cost evaluation were conducted in this work. A two-stage carbon membrane process with recycling in the second stage was found to be technically feasible to achieve >98% CH4 with <2% CH4 loss. The specific natural gas processing cost of 1.122 × 10−2 $/m3 sweet NG was estimated at a feed pressure of 90 bar, which was significantly dependent on the capital-related cost. Future work on improving carbon membrane performance is required to increase the competitiveness of carbon membranes for natural gas sweetening.

Enhanced cryogenic packed bed with optimal CO2 removal from natural gas; a joint computational and experimental approach

Cryogenics ◽  
2020 ◽  
Vol 105 ◽  
pp. 103010 ◽  
Author(s):  
Muhammad Babar ◽  
Mohamad Azmi Bustam ◽  
Abdulhalim Shah Maulud ◽  
Abulhassan Ali ◽  
Ahmad Mukhtar ◽  
...  
Keyword(s):  
Natural Gas ◽  
Experimental Approach ◽  
Packed Bed ◽  
Co2 Removal

Maximizing Ether Oxygen Content in Polymers for Membrane CO2 Removal from Natural Gas

2019 ◽  
Vol 11 (11) ◽  
pp. 10933-10940 ◽  
Author(s):  
Junyi Liu ◽  
Gengyi Zhang ◽  
Krysta Clark ◽  
Haiqing Lin
Keyword(s):  
Natural Gas ◽  
Oxygen Content ◽  
Co2 Removal ◽  
Ether Oxygen
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