Analysis of Operational Energy Intensity in LNG Vaporizers Design via Decomposition Method

In LNG process chain, a huge amount of operational energy was consumed especially by LNG regasification process. Therefore, the reduction of energy consumption by vaporizer systems is necessary to significantly reduce the costs, without reducing the energy performance. In this project, energy intensity are employed as the indicator of changes in energy efficiency of vaporizer system. .However, it is very crucial to analyze the energy intensity of a complex vaporizer system. Thus, this project used a decomposition method which is found to be an effective way to simplify the complex vaporizer system. This project proposed to reduce the amount of energy intensity of LNG vaporizer designs. Thus, a few analysis has been carried out on the system performance in order to evaluate the best LNG vaporizer technology to be optimized subsequently. Aspen Hysys software is used to simulate and analyze an optimized vaporizer design. The result show that Open Rack Vaporizer consume the lowest amount operational energy intensity compared to the other type of vaporizer. For an optimum condition of ORV, this project proposed the LNG injection pressure in ORV to be at 4 barg with E-100 discharge temperature is more than saturation temperature, -60.28 C.As a result, energy intensity of LNG vaporizer can be reduced up to 3.45 Wh/kg with maximum amount of 1st and 2nd Law Efficiency which is 99.10% and 94.99% respectivel

CARBON DIOXIDE ABSORPTION FROM NATURAL GAS USING POTASSIUM CARBONATE PROMOTED WITH GLYCINE INCONTINUOUS PACKED COLUMN

The data of continuous packed absorption system is important in order to understand on-site absorption process behavior. It is vital to ensure the process parameter specifically liquid flow rate, gas flow rate, operational pressure, CO2inlet concentration and liquid inlet temperature are operated at the most desirable condition for the maximum absorption performance. Besides, the fundamental properties such as liquid-film mass transfer coefficient

Effect of Carbon Dioxide (CO

This paper presented the effect of CO2 concentration in the gas feed to the CO2 absorption performance using a green solvent, potassium carbonate promoted with glycine (PCGLY). Recently, the performance of this solvent (with precipitates) was hindered by its poor mass transfer performance due to the blockage in packings and piping. Therefore, this study focused to study the CO2 absorption performance of non-precipitating potassium carbonate promoted with glycine. This green solvent contains aqueous blend of 15wt% potassium carbonate and 3 wt% glycine. The absorption performance of the solvent was obtained by demonstrated a few experimental works using a bench scale packed absorption column. The packing type was Sulzer metal gauze and the column consisted of six sampling point which located equidistance along the packing.The effect of CO2 concentration at the gas feed was assessed in term of its CO2 removal efficiency and concentration profile along the packing. The study shows the decreasing trend of CO2 removal as CO2 inlet concentration in the gas feed increases. The reason of this behavior is due to the limited reactant of liquid phase to absorb high CO2 concentration in gas phase. The main outcome of this study demonstrated the efficient absorption which can absorb up to 79.24 % of CO2 from natural gas using non-precipitated PCGLY