不同型式蒸煮助剂混用对竹木混合制浆碱回收蒸发设备阻垢抑垢的应用实践  

Application of Mixed Cooking Additiveson Scale Inhibition of Evaporator in the Alkali Recovery System of a Bamboo and Wood Mixed Pulp Mill

作　　者：王在梅 秦昀昌 陆丽云 周其满 WANG Zaimei;QIN Yunchang;LU Liyun;ZHOU Qiman(Guangdong Dingfeng Paper Co.,Ltd.,Zhaoqing 526300,China)

机构地区：[1]广东鼎丰纸业有限公司,广东肇庆526300

出　　处：《造纸科学与技术》2024年第2期7-10,共4页Paper Science & Technology

摘　　要：在传统蒸煮工艺中,所用的蒸煮助剂主要是硫化物(如硫化钠)、蒽醌及其衍生物等。硫化物助剂对环境影响较大,越来越受到环保要求的限制,而蒽醌类助剂对黑液碱回收蒸发结垢影响较大。广东某纸业公司在蒸煮过程中添加AP8180(蒽醌类)蒸煮助剂,在长期使用之后,发现制浆白液管道以及碱回收蒸发板等结垢速度快且结垢严重的情况;尤其蒸发板呈现搭桥板结情况,清理周期短且清理难度也大;另外频繁水煮使用的稀白液或者轻污冷凝水也会进入黑液系统,造成蒸汽浪费等问题。为改善以上状况,广东某纸业公司把QX-37表面活性剂类蒸煮助剂搭配AP8180蒽醌类蒸煮助剂混合使用,结果表明:QX-37与AP8180联合使用,蒸煮各参数与得浆率稳定,亦可减缓蒸发板结垢速度以及结垢程度,提高出效浓度约1.8%TS,大大降低了能源成本。In traditional cooking,the cooking additives used are mainly sulfides(such as sodium sulfide),anthraquinone(AQ)and its derivatives.Sulfide additives have a great impact on the environment,and more and more restricted SO2 emission regulations were established for environmental protection purpose.Anthraquinone cooking additives are well accepted by pulp mills for quite a long time.However,it has a great scaling impact for the evaporation equipmenton the black liquor alkali recovery system.Guangdong Paper Industry Company adds the AP8180(AQ)cooking additive in the cooking process.After long-term use,it is found that the scaling speed of pulping white liquid pipeline and alkali recovery evaporator is fast and serious;especially the evaporator presents a bridge stiffness scale,the cleaning cycle became shorter and the cleaning difficulty is also great;in addition,the dilute white liquid or light polluted condensed water used in frequent re-boiling will enter the black liquid system,causing many problems such as steam waste.In order to improve the above situation,Guangdong Paper Industry Company began to use QX-37(surfactant)cooking additive together with AP8180.The results show that,The combination of QX-37 and AP8180 ensures stable cooking parameters and pulp yield.It can also slow down the scaling speed and degree of the evaporation plate,increase the effective concentration by about 1.8%TS,and greatly reduce energy costs.

关 键 词：蒸煮助剂 蒽醌类 表面活性剂类 

分 类 号：TS743[轻工技术与工程—制浆造纸工程]