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当前位置:网站皇冠篮球比分网 > 行业新闻 > 碳化稻壳品质下降?三大因素要着力解决

碳化稻壳品质下降?三大因素要着力解决

文章来源:dgkfp.cn发表时间: 2019-8-5 10:00:26

皇冠篮球比分网 RUOSHIXIANGYAOJIANGDAOQIAOJINGGUOTANHUAZHIHOUHUODETANHUADAOQIAO,NEIMEJIUXUYAOYANGEDEBAKONGRANSHAODEWENDU、TONGFENGDETIAOJIANYIJIJIAREDESULVZHEISANDATIAOJIAN,RUOSHIZAIJINXINGDAOQIAODETANHUAGUOCHENGZHONG,YOURENHEYIBUBUZHOUDOUMEIYOUKONGZHIHAODEHUA,NEIMEDOUJIANGHUIYINGXIANGDAOTANHUADAOQIAODEPINZHI,SUOYISHUOXIWANGDAJIANENGGOUCONGSHENGCHANDESHIHOU,JIUJIYUKONGZHIHUODEGAOPINZHIDETANHUADAOQIAO。

 

若燃烧温度低,碳化稻壳中的碳元素没有完全转变为二氧化碳而残留在RHA中


❥燃烧的温度

RANSHAOGUOCHENGSHIWEILECHUQUDAOQIAOZHONGGEZHONGKERANXINGYOUJIWUZHI,DANQUEBUNENGPOHUAISiO2DEWUDINGXINGTAI,GENJUFENSHAOCHENGDUDEBUTONG,TANHUADAOQIAODECHENGFENYEBUJINXIANGTONG,DAOQIAOJINGWANQUANRANSHAOHOU,SUOHANTANYUANSUYIERYANGHUATANDEXINGSHISHIFANGCHULAI,QIZHONGDEGUIZEZHUANBIANWEIFEIJINGTAIERYANGHUAGUI,YUEZHANHUIFENHANLIANGDE80%~95%,YIYUE50 nmDAXIAODEKELIWEIJIBENLIZI,SONGSANZHANJUBINGXINGCHENGDALIANGNAMICHIDUKONGXI。JIAZEBIANWEIK2O,YUEZHANHUIFENHANLIANGDE1%~2%,BIBIAOMIANJIGAODA50~60 m2/g,ZHENGTICHENGHUIBAISE,RUORANSHAOWENDUGUOGAO,RHAZHONGDEWUDINGXINGSiO2JIUHUIDALIANGZHUANBIANWEIJIEJINGSiO2,FANERJIANGDIRHADEHUOXING。RUORANSHAOWENDUDI,TANHUADAOQIAOZHONGDETANYUANSUMEIYOUWANQUANZHUANBIANWEIERYANGHUATANERCANLIUZAIRHAZHONG,CONGERYINGXIANGWUDINGXINGSiO2DEHANLIANG,CHENGHEISEKELIZHUANG,YANJIUBIAOMING,GAOHUOXINGRHAFENSHAOWENDUKONGZHIZAI500~600℃WEIJIA。

 

碳化稻壳焦燃烧的温度为670℃,时间为32 min


❥加热的速率

研究表明:当升温速率为20℃/min时,碳化稻壳焦燃烧的温度为670℃,时间为32 min;当升温速率为100℃/min时,燃烧时间由32 min缩短到7.5 min,碳化稻壳焦燃烧温度接近800℃,比升温速率为20℃/min时高出了110℃,大规模生产时,碳化稻壳燃烧升温速率在70~100℃/min是生产SiO2的较佳条件,且稻壳在高温时燃烧时间为10min较好。【具体可参考《碳化稻壳优越的应用表现为你精心化盘点》的相关内容】

 

碳化稻壳产生的热值大约4 000 MJ/m3,碳化稻壳产率大约25%


❥通风的条件

ZAIQILIUSUDU0.8~2 m/sXIA,0.3~0.8 mmZHIJINGDEGUISHAHEDAOQIAOCHONGFENHUNHE,KESHITANHUADAOQIAORANSHAOXIAOLVDADAO97%,FEIHUIZHONGCANTANDEHANLIANGJINWEI3%~8%,QILIUSUDU30~40 m3/h,TANHUADAOQIAOCHANSHENGDEREZHIDAYUE4 000 MJ/m3,TANHUADAOQIAOCHANLVDAYUE25%。

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TONGGUOYUEDUYISHANGNEIRONG,XIANGBIDAJIADUITANHUADAOQIAODETANHUAYAODIANYOULEYIXIEDELEJIE,RUGUODAJIAHAIYOUSHENMEYIWENXIANGZIXUN,KEYIGUANZHUWOMENDEWANGZHANHUOZHEBODAWANGZHANXIAFANGDEREXIAN。HUANYINGGUANGDAXINLAOKEHUYUWOMENLIANXIZIXUN,WOMENJIANGJIECHENGWEININFUWU。


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