草类原料制浆黑液的资源化利用

Utilization of Pulping Black Liquor for Pulp by Straw Raw Material

以草类为原料的碱法制浆，其黑液的达标排放一直是困扰企业的技术难题。新疆天宏纸业股份有限公司采用芦苇亚硫酸钠法蒸煮工艺成功解决了这一问题。该工艺在蒸煮的过程中就对黑液进行改性，直接对提取的黑液进行蒸发干燥，不仅省去了繁琐的黑液改性过程，节省了设备投资，而且直接用亚硫酸钠黑液制取了木质素磺酸钠产品。

Alkali cooking pulping with straw as raw material, Standard discharge of black liquor is always a difficult technical problem troubling Enterprises. This process technology change properties of black liquor in the process of cooking process, Direct evaporation and drying on the extraction of black liquor, Not only save the tedious process, save equipment investment, And direct preparing lignin sodium sulfonate product with sodium sulfite liquor.