Recycling carbon resources in natural-gas purification plants under the carbon-peak and carbon-neutrality goal:An example from PetroChina Southwest Oil&Gasfield Company
In this study,the carbon resource distribution,recycling challenges,and domestic carbon dioxide(CO2)recy-cling technologies were analyzed in order for recycling carbon resources in natural-gas purification plants.Moreover,the re-cycling range,methods and process were determined,and application prospects of this resource utilization were been pre-dicted.Results show that(ⅰ)these purification plants boast abundant carbon resources,including CO2 accompanied in raw gas and the other generated from natural-gas combustion during production runs;(ⅱ)most carbon in the plants are recover-able,for example CO2 in gas products,CO2 emitted in recycling and generated from the gas combustion in industrial fur-nace;and(ⅲ)the priority shall be given to the chemical absorption based on alcohol amine solution to this recycling.Com-bined with the status quo of process units in the purification plants,five prospects are put forward,namely reducing CO2 removal rate while improving commercial gas ratio,replacing nitrogen to be as purge or protective gas,CO2 products,tak-ing CO2 as raw materials to manufacture chemical products and carbon-emission trading and CO2 storage.
Carbon peak and carbon neutralityCarbon resourceCO2Recycling technologyApplication prospect
NETL
NSTL
万方数据
