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如何应对聚羧酸减水剂霉变

来源: 石家庄市海森化工有限公司  日期:2020-04-08 10:10:14  属于:产品技术
文章摘要:

JUSUOSUANXIJIANSHUIJIZUOWEIDISANDAIGAOXINGNENGJIANSHUIJI,WEIMANZUBUTONGDEHUNNINGTUJISHUXINGNENGYAOQIU,CHANGYUSHAOLIANGDEHUANNINGZUFEN、YINQIZUFEN、XIAOPAOZUFEN、ZHANDUGAIXINGZUFENDENGFUPEIHOUSHIYONG。RANER,XIAJIWENDUGAO,JIARUHUANNINGZUFEN(RUPUTAOTANGSUANNA、ZHETANG)DEJIANSHUIJIRONGYIFASHENGBIANZHI,YANZHONGYINGXIANGSHIYONGXIAOGUO。RUHEJIEJUENI?

变质现象及原因

聚羧酸减水剂变质初期,液面有浅色绒毛状或棉絮状的菌斑,进而发展至呈离散岛块状的漂浮物,并不时有串状气泡冒出;变质严重时,菌斑会布满整个液面,溶液中呈现出浓绿色、褐色、黑色的悬浮物,并伴有腐败的酸臭味气体生成。这种变质主要是由霉变作用引起的。

JUSUOSUANXIJIANSHUIJIBIANZHIZHUYAOYOUSUOFUPEIDEPUTAOTANGSUANNAYINQI。GONGYEHUASHENGCHANSHANGPUBIANCAIYONGHEIQUMEIFAJIAOZHIQUPUNA。HEIQUMEIFAJIAOJIESHUHOUHUICHANSHENGDALIANGHEIQUMEIJUNTICANZHA,QISHIZHONGSHIPUNARONGYEZONGLIANGDE2%-3%。HEIQUMEIJUNZHAZHONGHANYOUYINGYANGWUZHIHEDUOZHONGCHENGFEN。ZAIPUNADESHENGCHANZHONG,RUOSHENGCHANKONGZHIBUYANGE,NANMIANHUIYOUPUTAOTANG、HEIQUMEIDECANLIU,ZHEIYEWEIWEISHENGWUDEFANZHITIGONGLEYINGYANG。ZAISHIYIDEZIRANTIAOJIANXIA(YINGYANGWU、WENDU、SHIDU、YANGQI、pHZHI),WEISHENGWUJUYOUJINGRENDEFANZHISUDU,DAYUE(20-30)minNEIJIUKEYIFANZHIYIDAI。DANGJIWEIXIANJIANDEFANZHITIAOJIANYIDANOUYUBINGXIANGHUDIEJIASHI,“MEIJUNBAOSHENG”XIANXIANGJICHUXIAN。BIANZHILEDEJIANSHUIJIFAHEI,JIUSHIYOUBUHEGEDEPUNACHANPINZHONGDEHEIQUMEIFAJIAOYINQIDE。

LINGYIFANGMIAN,JUSUOSUANXIJIANSHUIJIDEMEIBIANYEYUQICHUCUNHUANJINGYOUGUAN。JIAOGAOWENDUHUIJIAJUDAFENZILIANDEYUNDONG,YIDANCHAOGUOHUAXUEJIANDELIJIENENG,JIUFASHENGLIANSHIFENJIE、WUGUIZEDUANLIEHEREFENJIEDENG,DAOZHIJUHEWUDELIEHUASUDUJIAKUAI。TONGYANG,WENDUYUEGAO,WEISHENGWUDEHUOXINGYEYUEDA,JIANSHUIJIDEMEIBIANSUDUYEYUEKUAI。

YEYOUWENXIANXIANSHI,BUDANGDECUNCHUTIAOJIAN,BIRUCUNCHUKONGJIANWENDUSHANGSHENGYANZHONG,BUTONGFENG,YOUCHAOSHI,DAOZHIDADANTIRONGHUA,BINGQIEDANTIJUBUWENDUGUOGAO,SHIQIJIASUXIANGGUANDANTIDEZHONGPAIFANYING,DAOZHIDADANTISHUANGJIANLIANGXIAJIANGYANZHONG,XINGNENGLIEHUAYANZHONG。

(二)变质的预防及解决措施

JUSUOSUANXIJIANSHUIJIFASHENGMEIBIANHUIDUIQIZHILIANGCHANSHENGYINGXIANG,YANZHONGSHIHUIDAOZHIHUNNINGTUZHILIANGSHIGU。JIANYICAIQUYIXIACUOSHI。

(1) 选用优质的葡萄糖酸钠作为缓凝组分

MUQIANSHIMIANSHANGPUTAOTANGSUANNASHENGCHANQIYEJIAODUO。JUYOUYANGEDESHENGCHANKONGZHITIXIDECHANGJIANENGZAISHENGCHANGUOCHENGZHONGYOUXIAOKONGZHIPUTAOTANG、HEIQUMEIDECANLIULIANG,CONGERJIANGDIFUPEIYOUPUTAOTANGSUANNADEJUSUOSUANXIJIANSHUIJIFUBAIBIANZHIDEFENGXIAN。

(2) 复配一定量防腐剂

在聚羧酸系减水剂生产过程中复配一定量防腐剂,能有效防止聚羧酸减水剂的腐败变质。目前市面上的防腐剂主要有亚硝酸钠、苯甲酸钠和异噻唑啉酮。其中异噻唑啉酮是一种较为广泛、高效、低毒、非氧化性杀菌剂,适用的pH值较广,用于减水剂防霉杀菌是较为理想的。防腐剂的添加量为每吨聚羧酸系减水剂(0.5-1.5)千克。

(3)注意储存环境

尽量将聚羧酸减水剂存储在阴凉、通风、无阳光直射的地方。曾做过测试,将一份聚羧酸系减水剂分别放置在阴凉、无阳光直射的储存瓶中,另一份放置在阳光可以直射到的储存瓶中,发现放置在阳光直射的储存瓶中的减水剂很快就霉变发黑。

LINGWAI,JUSUOSUANXIJIANSHUIJICHUCUNRONGQIJINLIANGSHIYONGFEIJINSHUCAILIAO,FOUZEJINSHUCAILIAODEFUSHIYEHUIYINQIJIANSHUIJIBIANSESHENZHIBIANZHI。RUBUXIUGANGGUANHUISHICHUCUNDEJIANSHUIJIBIANCHENGHONGSE,TIEGUANHUISHICHUCUNDEJIANSHUIJIBIANCHENGLVSE,TONGGUANHUISHICHUCUNDEJIANSHUIJIBIANCHENGLANSEDENG。

(4)合理预估工程上聚羧酸系减水剂使用量

YIXIEGONGCHENGXIANGMUSHANG,YOUYUSHOUGONGCHENGJINDU、TIANQIHUANJINGDENGYINSUYINGXIANG,JUSUOSUANXIJIANSHUIJISHIYONGSUDUWANGWANGBUYIZHANGKONG。YOUXIEGONGCHENGSHANGDEJUSUOSUANXIJIANSHUIJIFANGZHIZAIGONGDIDESHIJIANYOUDECHAOGUO3GEYUESHENZHIGENGZHANG,FUBAIBIANZHISHIYOUFASHENG。SUOYIJIANYICHANGJIASONGHUOQIANYAOYUGONGCHENGXIANGMUCHUGOUTONGCHANPINSHIYONGJINDUYUZHOUQI,ZUODAOYOUJIHUADESHIYONG,BAOZHENGJUSUOSUANXIJIANSHUIJIDEXIAOHAOYUBUCHONGCHUYUDONGTAIPINGHENG。

(5)减少甲醛、亚硝酸盐等防腐剂的使用

MUQIANYOUYIBUFENJIANSHUIJICHANGJIASHIYONGJIAQUAN、BENJIASUANNAJIQIANGYANGHUAXINGDEYAXIAOSUANYANDENGJINXINGFANGFU。QISUIRANXIANGDUICHENGBENJIAODI,DANXIAOGUOBINGBUHAO,TONGSHIJIAQUANYEHUISUIZHESHIJIAN、WENDU、pHZHIDENGYINSUBIANHUAERTAOYI,RENGRANCHUXIANFUBAIBIANZHIXIANXIANG。JINLIANGXUANYONGYOUZHISHAJUNJIFUPEISHIYONG,DUIYUYIJINGFUBAIDEJIANSHUIJICHUCUNGUAN,YINGQINGXIGANJINGZAIBUCHONGXINDEJUSUOSUANXIJIANSHUIJI。

LINGWAI,DUIYUYIJINGMEIBIANDANMEIBIANCHENGDUJIAOQINGDEJUSUOSUANXIJIANSHUIJI,YEYOUXIANGGUANDEFANGFAJINXINGCHULIHUISHOU,RUJIARECHULIHUOCHANRUSHUANGYANGSHUIHUOYEJIANDEFANGFA。XIANGGUANWENXIANDEYANJIUJIELUNBIAOMING,JINGCHULIHOU,MEIBIANDEJUSUOSUANXIJIANSHUIJIKEYIHUIFUYUANYOUXINGNENG,YANSEYUYUANYOUCHANPINJIEJIN,QIEYIWEINENGBEIQINGCHU。(LAIYUAN:WANGLUO)


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