Effectively harnessing solar energy for the conversion of CO₂ into valuable chemical energy presents a viable solution to address energy scarcity and climate change concerns.

When blast furnace gas turbine suddenly stops in large iron and steel enterprises, gas supply should be emergency cut off. Large amount of gas will accumulate and the pressure fluctuation will be large in the pipeline. The pipeline equipments and other gas equipments will be damaged, if not taking corresponding measures. This research study focuses on modeling and simulation of distribution network under the typical fault condition, and it has important reference value for the design and safe operation of pipeline network. Finite Difference Method is commonly used in pipeline simulation, but for the coefficients of discrete equations have characteristics of strong correlation with unknown, results are seldom accurate by Finite Difference Method. In this paper, the compressible Fluid High-order Finite Volume Method and its series improved algorithm is used to simulate and analyze the behavior of natural gas pipeline under the typical fault condition when emergency valve of the main gas using device suddenly cut off. Adopting SIMPLEC, density parameters fixed before the updating of pressure iteration, and once again updated by larger under relaxation operator after the pressure parameters update, the method gives accurate and fast convergence numerical solutions.