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【单选题】
酸性气反应炉与尾气焚烧炉停炉的顺序正确的是___。
A. 酸性气反应炉先停
B. 尾气焚烧炉先停
C. 需要同时停
D. 没有先后顺序
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答案
A
解析
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相关试题
【单选题】
尾气焚烧炉温度高时,应采取的措施是___。
A. 开大烟囱蝶阀
B. 关小炉用瓦斯量
C. 调小风量
D. 提高蒸汽发生器压力
【单选题】
硫磺捕集器出口安装的在线分析仪是___。
A. H2在线分析仪
B. PH值在线分析仪
C. H2S/SO2比值在线分析仪
D. 尾气SO2
【单选题】
过程气中COS含量高是因为___。
A. 原料气带水多
B. 原料气带烃多
C. 反应器床层温度低
D. 原料气带氨多
【单选题】
酸性气进炉带液较多,以下___操作不正确是。
A. 提高配风比
B. 加强分液罐压液
C. 降低配风比
D. 联系上游装置调整操作
【单选题】
酸性气燃烧炉炉膛温度高的原因___。
A. 酸性气中烃含量降低
B. 风机供风量下降
C. 酸性气中硫化氢浓度上升
D. 酸性气中氨含量上升
【单选题】
酸性气中含水量上升,酸性气燃烧炉炉膛温度___。
A. 上升
B. 下降
C. 变化
D. 无法确定
【单选题】
风机供风量上升,则尾气焚烧炉膛温度___。
A. 下降
B. 升高
C. 没有变化
D. 无法确定
【单选题】
汽包水满的现象是___。
A. 带水严重,蒸汽管网发生水击
B. 给水量不正常,小于正常上水量
C. 蒸汽温度上升
D. 蒸汽发汽量增大
【单选题】
溶剂再生塔压力高,溶剂再生效果___。
A. 好
B. 差
C. 一样
D. 无法确定
【单选题】
溶剂再生塔压力高,贫液中___。
A. 烃含量高
B. 硫化氢含量低
C. 烃含量低
D. 硫化氢含量高
【单选题】
以下___不是酸性气燃烧炉蒸汽发生器液位低的原因。
A. 给水量小于正常量
B. 蒸汽产量变大
C. 酸性气量突然上升
D. 蒸汽管网压力上升
【单选题】
溶剂再生塔液位低,如何调节___。
A. 提高酸性气抽出量
B. 提高蒸汽用量
C. 降低贫液抽出量
D. 回流量降低
【单选题】
溶剂再生塔顶温高的主要危害是___。
A. 利于解吸过程
B. 贫液泵容易抽空
C. 贫液中硫化氢含量上升
D. 腐蚀增加
【单选题】
贫液中H2S含量高的原因___。
A. 再生塔顶部温度高
B. 再生塔压力低
C. 富液中CO2含量偏高
D. 上游吸收塔温度高
【单选题】
联锁投用时机正确的是___。
A. 装置检修之后马上投用
B. 装置进酸气之前
C. 装置烘炉之前
D. 装置运行正常之后
【单选题】
装置发生联锁自保以后再次开车,必须对联锁进行___,否则无法进行操作。
A. 报警确认
B. 复位
C. 工作站重启
D. 投用确认
【单选题】
为防止操作人员对联锁的误操作,联锁命令必须进行___操作才能有效。
A. 工程师权限确认
B. 信号切除
C. 硬手操
D. 双重确认
【单选题】
在生产异常情况下,需要暂时切除联锁系统,是将联锁置于___状态。
A. 手动
B. 自动
C. 程序
D. 旁路
【单选题】
以下___不是溶剂再生塔压力高的原因。
A. 塔底蒸汽大
B. 酸性气后路不畅
C. 回流量小
D. 富液含H2S量低
【单选题】
以下___不是溶剂再生塔液位低的原因。
A. 塔底贫液排出量大
B. 气相夹带液相量大
C. 蒸汽量大
D. 回流量大
【单选题】
溶剂再生塔液位低的原因是___。
A. 进料量大
B. 塔底贫液排出量大
C. 蒸汽量小
D. 回流量大
【单选题】
克劳斯反应器进口H2S、SO2浓度上升,克劳斯反应器床层温度则___。
A. 上升
B. 下降
C. 无变化
D. 无法确定
【单选题】
克劳斯反应器床层温度下降,主要原因是___。
A. 反应器进口H2S、SO2浓度上升
B. 原料中硫化氢含量高被带入反应器
C. 催化剂自燃后缺氧影响反应
D. COS、CS2含量降低
【单选题】
若溶剂变得浑浊,则说明___。
A. 消泡剂加过量
B. 原料气含有氨
C. 带有硫化铁
D. 无法确定
【单选题】
停工时,克劳斯催化剂先进行___。
A. 钝化
B. 硫酸盐还原
C. 热浸泡
D. 烟气吹硫
【单选题】
停工时,克劳斯催化剂热浸泡操作时,应___。
A. 提高H2S与SO2比值
B. 提高反应器进口温度
C. 降低H2S与SO2比值
D. 降低反应器进口温度
【单选题】
克劳斯催化剂还原操作中保持过程气中硫化氢与二氧化硫比值在___,并运行24小时。
A. 1~2
B. 2~3
C. 3~4
D. 4~5
【单选题】
克劳斯催化剂还原操作反应方程式系数正确的是Al2(SO4)3+H2S→Al2O3+___SO2+H2O。
A. 1
B. 2
C. 3
D. 4
【单选题】
停工时候,装置降温的要求是___。
A. 慢
B. 快
C. 先慢后快
D. 无要求
【单选题】
对设备长期停用进行氮封的作用是___。
A. 防止生产物料窜入
B. 防止设备受潮
C. 隔绝空气
D. 没有目的,一直都是这么做的
【单选题】
停酸性气原料时,操作人员应采取最合适的措施是___。
A. 开大风机吹扫
B. 改瓦斯完全燃烧
C. 立即停工
D. 用氮气吹扫
【单选题】
硫磺回收装置烟道温度高的原因是___。
A. 反应炉配风过大
B. 焚烧炉用风量过小
C. 烟道进口蝶阀开度大
D. 焚烧炉废热锅炉自发蒸汽压力控制过低
【单选题】
在“四停”事故中外操最最容易判断的是___。
A. 停电
B. 停水
C. 停汽
D. 停风
【单选题】
克劳斯催化剂失活的判断方法是___。
A. 反应器出口温度高
B. 床层温度低
C. 反应器出口COS与CS2含量上升
D. 捕集器出口温度上升
【单选题】
___不是瓦斯带水的工艺现象。
A. 炉膛内压力下降
B. 炉膛内会产生回火
C. 炉膛内温度下降
D. 炉膛内压力上升
【单选题】
烟囱冒黑烟的原因,以下不正确的是___。
A. 焚烧炉配风过小
B. 风机放空阀开度过大
C. 烟气量过大
D. 瓦斯量太大
【单选题】
仪表风中断后,风开阀现场如何进行操作___。
A. 改由上游阀控制
B. 由下游阀控制
C. 由副线阀控制
D. 按经验进行操作
【单选题】
硫磺回收装置四停事故中,___对装置威胁最大。
A. 停电
B. 停汽
C. 停循环水
D. 停风
【单选题】
配合仪表UPS切换时,可能会对装置造成___影响。
A. 现场仪表断电
B. DCS黑屏
C. DCS死机
D. DCS点无数据显示
【单选题】
配合仪表UPS切换时,将关键控制回路___操作,避免发生重大事故。
A. 投自动
B. 改手动
C. 改副线
D. 维持原来状态
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