Cold energy air separation storage

Can cold energy be used in the air separation process?

One of the most promising ways to use the cold energy contained in LNG is to incorporate it into the air separation process (ASP) in order to increase the oper-ation’s effectiveness. This literature review aims to provide an overview of the recent research on the cold utilization of LNG integrated with the air separation process.

What are the advantages of LNG cold air separation process?

The energy consumption of the process is decreased by about 38.5% compared to a conventional cryogenic air separation process due to LNG cold energy utilizing and integrating with oxy-fuel power generation sub-cycle. 4.

How can a cryogenic air separation unit save energy?

Liu et al. proposed an external compression ASU with energy storage, saving 5.13 % of the power cost. Wang et al. introduced a cryogenic distillation method air separation unit with liquid air energy storage, storing waste nitrogen to store cold energy with a payback period of only 3.25–6.72 years.

What is the energy consumption of air separation process with LNG cold recovery?

It is shown that the energy consumption for the proposed air separation process with LNG cold recovery is about 38.5% lower compared for a convectional cryogenic air separation process. The energy and exergy efficiencies increase by 59.4% and 67.1%, respectively. 1. Introduction

What is a cryogenic air separation process based on internal recovery?

Conclusions A cryogenic air separation process based on internal recovery with LNG cold energy utilization and an oxy-fuel closed cycle for power generation is introduced and successfully analyzed. High purity liquid nitrogen and oxygen are the products of the process.

What is a novel cryogenic air separation process with LNG (liquefied natural gas)?

A novel cryogenic air separation process is introduced. Cold energy of LNG (liquefied natural gas) is used as refrigeration source. Heat integration maximizes the process heat recovery. A novel cryogenic air separation process with LNG (liquefied natural gas) cold energy utilization that produces liquid nitrogen and oxygen is proposed and analyzed.