GB/T 46870.2-2025 Carbon dioxide capture—Part 2:Evaluation procedure to assure and maintain stable performance of post-combustion CO2 capture plant integrated with a power plant

Scope

This document provides relevant definitions, guidelines, and supporting information for the evaluation and reporting of PCC units integrated with main power plants (for items currently undergoing basic design, and the operation results of reference units or modules used for feedback), to ensure they meet (design) performance requirements. The PCC units separate CO2 from power plant flue gas, preparing it for subsequent transportation and geological storage. The physical system involved is a single power plant, equipped with optional auxiliary units to provide thermal energy for the PCC, and a single PCC unit as described in ISO 27919-1. This document proposes calculation formulas and methods to ensure and maintain reliable performance, describes issues involved in the design and construction phases, and documents practices for reliability and availability during daily operation. These practices will also guide ongoing maintenance plans. This document does not provide guidelines for benchmarking, comparing, or evaluating the operation of PCC units employing different capture technologies (such as different absorbents), nor does it specify specific operating conditions such as temperature.

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