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Cansolv废酸水再生阳离子交换树脂实验研究
Experimental study on Cationic exchange resin regenerated from Cansolv waste acid water
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- DOI:
- 作者:
- 廖 薇1 ，田馨雅1 ，柏洪辉1 ，马 悦1 ，江 文2
Liao Wei 1 ，Tian Xinya 2 ，Bai Honghui 1 ，Ma Yue 1 ，Jiang Wen 1
- 作者单位:
- 1.中国石油西南油气田公司川西北气矿，四川 江油 621700；2.重庆科技学院化学化工学院，重庆 404100
1.Northwest Sichuan Gas District of Southwest Oil and Gasfield Company，Jiangyou 621700，China；2.College of Chemistry and Chemical Engineering，Chongqing University of Science&Technology，Chongqing 404100，China
- 关键词:
- Cansolv；废酸水；阳离子交换树脂；再生
Cansolv；waste acid water；cation exchange resin；regeneration
- 摘要:
- 摘要：Cansolv尾气氧化工艺运行过程中会产生较大量废酸水（含 SO3 2- 、SO4 2- ），一般采用 31%盐酸对生产废水装置阳离子交换树脂进行再生。为了研究Cansolv废酸水替代盐酸再生阳离子交换树脂效果，实验通过对 001-7阳离子交换树脂进行静态及动态吸附、废酸水对吸附后树脂进行再生脱附，测定树脂吸附率（η%）及脱附率（P%）。实验结果表明，阳离子交换树脂对 Ca2+ 和 Mg2+ 均具有良好的吸附效果，废酸水作为脱附液进行树脂再生可行；动态吸附时阳离子交换树脂对Mg2+ 和Ca2+ 最大吸附率可达70%和50%，动态吸附最佳上柱流速为3 mL/min；废酸水作为洗脱液对 2种离子均具有一定的洗脱能力，Mg2+ 和 Ca2+ 的脱附率分别为 81.9% 和48.6%，且质量浓度为4%为洗脱液的最佳浓度。Abstract: During the operation of Cansolv tail gas oxidation process, a large amount of waste acid water (including SO3 2- and SO4 2- )will be produced. Generally, 31% hydrochloric acid is used to regenerate the cation exchange resin in the wastewater unit. In orderto study the effect of Cansolv waste acid water instead of hydrochloric acid on the regeneration of cation exchange resin, theexperiment determined the adsorption rate (η%) and desorption rate (P%) of the resin by conducting static and dynamic adsorptionof 001-7 cation exchange resin, waste acid water regeneration and desorption of the adsorbed resin. The results showed that thecation exchange resin had a good adsorption effect on Ca2+ and Mg2+ , and the waste acid water as desorption liquid was feasible forresin regeneration. The maximum adsorption rates of Mg2+ and Ca2+ can reach 70% and 50%, and the optimal loading velocity ofdynamic adsorption was 3 mL / min. The desorption rates of Mg2+ and Ca2+ were 81.9% and 48.6% respectively, and the optimalconcentration was 4%.