Pressure response and phase transition in supercritical CO2 releases from a large-scale pipeline

Abstract

As part of the Carbon Capture and Storage (CCS) process, pipeline transportation of dense phase CO2 is the safest and most economic option for delivering captured CO2 to a storage site .However, in the event of pipeline rupture an enormous mass of CO2 may be released very rapidly, presenting several risks to the pipeline and surrounding population including the significantly increased risk of brittle fracture in the pipe wall. The study of pressure variation and phase change in CO 2 during pipeline blowdown can contribute to the understanding of brittle fracture initiation and propagation, as well as downstream CO 2 diffusion behaviour. As part of the CO2QUEST project, a reusable, industrial scale pipeline experimental apparatus with a total length of 258 m and the inner diameter of 233 mm was fabricated to study CO 2 pipeline blowdown. A dual-disc blasting device was used to remotely control the opening of the pipeline, three different orifice diameters were used in experiments (15 mm, 50 mm and Full Bore Rupture). Different initial conditions in the inventory were achieved by heating the charged * Corresponding author.

A nonlinear interval number programming algorithm for CO2 pipeline transportation design under uncertainties

“…where U ∈ = {U|U L ≤ U ≤ U R }, is a set. In terms of Eqns (8), (9), and (10), the design of pipelines with uncertainties is transformed into a two-objective and two-level optimization problem. The inner optimization is used to determine the objective function interval; the outer optimization is used to obtain the best value of the design variables.…”

“…Carbon capture, utilization, and storage (CCUS) is regarded as a powerful technological solution for reducing global CO 2 emissions, which includes the three sub‐systems of CO 2 capture: transportation, utilization, and storage. Pipeline is a preferred approach for large‐scale and long‐distance CO 2 transportation as a link to transport CO 2 from the source to the oil field for CCUS projects . However, uncertainties always exist in practice in pipeline design, which strongly affect the optimization results and may lead to unnecessary cost.…”

“…1,2 Carbon capture, utilization, and storage CO 2 transportation as a link to transport CO 2 from the source to the oil field for CCUS projects. [8][9][10] However, uncertainties always exist in practice in pipeline design, which strongly affect the optimization results and may lead to unnecessary cost. The levelized cost of the pipeline transportation system is variable under the multiple uncertain design conditions, and this affects the design of the other sub-systems.…”

An experimental investigation on pressure response and phase transition of supercritical carbon dioxide releases from a small‐scale pipeline

“…Numerous publications have examined the release behaviour of CO 2 based on both experimental studies and numerical research. We have given a detailed introduction in our recently published works and will therefore not repeat it in this article. Despite numerous studies nowadays, there is not yet a clear understanding of the pressure response and phase transition of the supercritical CO 2 depressurization process after accidental release from a pressurized pipeline.…”

Influence of Dense Phase CO2 Pipeline Transportation Parameters

“…For a large number of storage and medium distance transportation of CO2, (less than 1000 km), the use of pipelines are by far the safest and most economical way of transportation [6][7][8][9][10][11]. CO2 is widely used in the United States, Canada, Turkey etc.…”