硫酸盐法制浆企业的碳排放及碳捕获与利用技术

Carbon Emission, Carbon Capture and Utilization Technologies of Kraft Pulping Enterprises

关键词:  碳中和  碳排放  硫酸盐浆厂  CO₂捕获及利用  生物精炼

Key Words:carbon neutrality  carbon emission  kraft pulping enterprises  CO₂ capture and utilization  biorefinery

摘要:本文首先介绍了硫酸盐浆厂生产纸浆过程中CO₂的排放来源，进一步分析了“林浆一体化”企业的整体碳足迹，然后综述了温室气体排放核算方法，并介绍了硫酸盐浆厂的CO₂捕获及利用技术研究进展，包括黑液中酸析木质素的生产、沉淀碳酸钙的生产、塔罗油的提取、木质素纳米颗粒的生产等。最后探讨了将硫酸盐浆厂与生物质精炼厂相结合以进一步降低碳排放的可能性。

Abstract:The emission sources of CO₂ during the pulp production process of kraft pulping enterprises were first introduced in this paper. The overall carbon footprint of “forest-pulp integration” enterprises was further analyzed， followed by reviewing the accounting methods of greenhouse gas emissions and introducing the research progress of CO₂ capture and utilization technologies in kraft pulping enterprises. The technologies mainly included the lignin production from black liquor via acid precipitation process， the production of precipitated calcium carbonate， the extraction of Tall oil， and the production of lignin nanoparticles， etc. Finally， the possibility of combining kraft pulping enterprises with biorefinery enterprises to further reduce the carbon emission was discussed.