水煤氣制甲醇脫硫運行小結

   

BENCHANGSHUIMEIQIZHIJIACHUNXITONGZI2006NIANXIABANNIANKAISHIYUNXING,ANZHAOSHEJIYAOQIUSHIYONGKAOJIAO,DANJINGGUOWOMENKAOCHA,ZUIZHONGKAICHEDESHIHOUSHIYONGDONGSHIGONGSIDE888TUOLIUCUIHUAJI。WOGONGSIYUANLAIYIKAOTIANRANQISHENGCHANJIACHUN,HOUJINGGUOJIGAIKUONENGZENGTIANLEYITAOSHUIMEIQIZHUANGZHI。YINDUISHUIMEIQIZHUANGZHIDERENSHIBUZU,DUIQIYEDESHENGCHANYINGXIANGJIAODA,CUTUOLIUXITONGCUNZAIHENDUOWENTI,JINGGUOQIANQIANHOUHOUDEGAIZAO,XIANJIBENNENGMANZUSHENGCHANXUQIU,JIANGWOGONGSIDEGAIZAOCHENGGUOZUOYIZONGJIE,HEDAJIAXIANGHUJIAOLIUHEXUEXI。

1?技術改造

1.1加強預凈化

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1.2?增加精脫再生槽

WOGONGSIYUANLAICU、JINGTUOLIUXITONGGONGYONGYIGEZAISHENGCAO。CU、JINGTUOLIUXITONGYALIBUYIYANG,CUTUOHEJINGTUOQITICHENGFENBUYIYANG,PENSHEQIYALIDIAOZHENGYEBUWENDING。ZHEJIUZAOCHENGLEYEMIANBUPINGWEN,BODONGJIAODA,LIUPAOMOFANDEYEBUHAO,PAOZIYERONGYIDALAN,XUANFULIUJIAOGAO。SUOYIWOMENJIUCANKAODONGSHIGONGSIFANGAN,ZHONGXINSHEJIYITAOZAISHENGXITONG,CUTUOHEJINGTUOFENKAIZAISHENG,BINGYOUDONGSHIGONGSISHEJIBUJINXINGSHEJI,2007NIAN5YUEKAICHEHOU,DAOXIANZAIYIZHIZAIWENDINGYUNXING,JINGTUOTADEYUNXINGSHIJIANMINGXIANDEYANCHANG。

1.3?粗脫硫系統再生槽增加分布板

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1.4?殘液的處理

WOMENZAITUOLIUBANGONGLOUDEHOUMIANKONGDISHANGWALESANGE10m

3

左右的沉降池進行多級過濾,這樣既能冷卻熔硫后的殘液,又能結晶過濾出一部分副鹽,冷卻后的殘液回系統實現了良性的循環。

1.5?再生液溫度的控制

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2?運行總結

2.1?無機硫脫除率高

ANZHAOSHEJISHANGDEYAOQIU,CUTUOLIUCHUKOULIUHUAQINGXIAOYU50mg/m

3

就可以,生產幾年來,粗脫硫的出口一直在15mg/m

3

以下,其脫除率達到了99%。

2.2?有機硫脫除效果好

YOUYUWOMENCHANGDETESHUYUANYIN,SHUIMEIQISHENGCHANJINGHUAZHONGMEIYOUBIANHUAN、TUOTANGONGYI,SHIFATUOLIUHOUZHIJIECHUANZHONGWENSHUIJIE,CHANGWENSHUIJIE,HUOXINGTAN。ERCOSDENGYOUJILIUDEZHUANHUAZHUYAOSHIZAIBIANHUANZHONGJINXINGDE,YINCIWOMENCHANGYOUJILIUDETUOCHUXIANDETEBIEDEZHONGYAO。ZHONGWENSHUIJIESHEJISHANGJINKOUYAOQIUCOS<200mg/m

3

,但是實際水煤氣中的COS含量在300~600mg/m

3

,這就造成設計上與生產上的不符。好在我們采用了東獅公司的888脫硫催化劑,該催化劑具有較高的COS脫除率,經過粗脫后,水煤氣中的COS<150mg/m

3

,達到了設計的要求。當初我們以為剛開車催化劑濃度和總堿度都較高,溶液質量又特別好,脫除效果肯定好,但經過這幾年來的跟蹤分析看COS的脫除效果一直比較穩定,這樣就保證了生產的連續性,延長了中溫水解劑的使用壽命,給我們廠帶來了很大的經濟效益。

正常狀態下的硫分析數據(ppm)

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