【多选题】
下列选项中,适用于金属缠绕垫片的密封面形式是___
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【多选题】
溶剂富液泵全坏造成的影响是___
A. 焚烧炉炉温上升
B. 烟气排放二氧化硫含量明显上升
C. 溶剂再生系统停车
D. 硫磺回收装置紧急停工
【多选题】
活塞式压缩机的气阀,检修后进行试漏试验,不应选用___
【多选题】
以下选项属于管壳式换热器是___
A. 板式换热器
B. U型管式换热器
C. 浮头式换热器
D. 固定管板式换热器
【多选题】
减少装置电耗,正常的方法有___
A. 合理降低鼓风机出口压力
B. 关小泵出口阀,降低机泵电流
C. 合理降低鼓风机放空风量
D. 夏季延后开启装置照明用电
【多选题】
废热锅炉完全烧干时补水的不正确处理方法是___
A. 可以立即补水
B. 炉膛熄火以后就可补水
C. 等出口温度降至100℃以下再补水
D. 等出口温度降至常温才能补水
【多选题】
催化剂装填时催化剂上下面需要装填一定厚度的瓷球,是起___作用。
A. 均匀分布
B. 保护
C. 增加压降
D. 减慢气速
【多选题】
停工反应器内催化剂的保护操作,以下___是正确的。
A. 反应器进出口加盲板
B. 反应器充氮气
C. 催化剂装桶保护
D. 催化剂装袋保护
【多选题】
影响克劳斯催化剂活性的因素___。
A. 催化剂预硫化效果
B. 反应温度
C. 催化剂积硫
D. 催化剂积碳
【多选题】
废热锅炉投用后,锅炉水的控制指标有___。
A. 电导率
B. PH值
C. 磷酸根
D. 钠离子
【多选题】
废热锅炉排污的作用是___。
A. 降低锅炉含盐量
B. 排出锅炉内的废渣污垢
C. 当锅炉液位高时,可降低液位
D. 停炉检修时,排净锅炉内的水
【多选题】
设置燃烧炉废热锅炉的作用是___。
A. 降低过程气温度,冷凝液硫
B. 回收热量
C. 提高硫分压
D. 提高后部的转化率
【多选题】
酸性气燃烧炉炉膛温度低的原因是___。
A. 酸性气中烃含量下降
B. 风机供风量下降
C. 酸性气中硫化氢浓度下降
D. 酸性气中氨含量下降
【多选题】
溶剂再生塔压力波动的原因有___。
A. 进塔富液的组分
B. 富液进料量
C. 酸性气抽出量
D. 贫液浓度
【多选题】
溶剂再生塔顶温高的处理方法是___。
A. 适当降低塔底加热蒸汽量
B. 适当增加塔顶回流量
C. 适当增加塔底加热蒸汽量
D. 适当降低塔顶回流量
【多选题】
溶剂再生塔底温高对装置能耗的影响主要是___。
A. 塔底加热蒸汽消耗量大
B. 富液泵电耗大
C. 贫液冷却负荷大
D. 贫液泵电耗大
【多选题】
贫液中H2S含量高的原因是___。
A. 再生塔顶部温度高
B. 再生塔压力高
C. 富液中CO2含量偏高
D. 重沸器壳程液位过高
【多选题】
降低克劳斯尾气中硫化氢含量的方法是___。
A. 减少酸性气波动
B. 提高反应炉炉膛温度
C. 提高配风比
D. 提高克劳斯反应器进口温度
【多选题】
克劳斯反应器床层温度的影响因素是___。
A. 反应器进口H2SSO2浓度变化
B. 催化剂活性
C. 反应器进口温度的变化
D. 系统压力的变化
【多选题】
溶剂发泡时的处理方法是___。
A. 添加适量的消泡剂
B. 加强溶剂过滤
C. 检查储罐氮封是否完好,防止空气漏入
D. 加水置换
【多选题】
酸性气原料突然中断的处理方法是___。
A. 改烧瓦斯
B. 时间长装置按紧急停工处理
C. 燃烧炉闷炉待料
D. 焚烧炉闷炉待料
【多选题】
脱硫剂富液与贫液主要区别有___。
A. 硫化氢浓度
B. 二氧化碳浓度
C. 烃浓度
D. 氮气浓度
【多选题】
尾气焚烧炉鼓风机停机时焚烧炉的工艺现象是___。
A. 进炉风量为零
B. 发生联锁自保
C. 炉膛压力升高
D. 炉膛熄火
【多选题】
硫磺排污时发现黑硫磺,其生成原因不正确的是___。
A. 原料带水
B. 燃烧炉瓦斯进炉阀门内漏
C. 原料带烃
D. 原料带胺
【多选题】
瓦斯带水的工艺现象___。
A. 炉膛火焰发红
B. 炉膛压力上升
C. 炉膛出口温度急剧下降
D. 如带水过多火焰熄灭
【多选题】
烟囱冒黑烟的原因是___。
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. 废热锅炉腐蚀
【多选题】
停仪表风的现象___。
A. 调节阀失灵
B. 操作参数变化较大
C. 调节阀开度为100%
D. 控制阀可以控制
【多选题】
烟道气温度高时的处理方法是___。
A. 烟道增加衬里
B. 开好克劳斯系统
C. 全开烟道进口蝶阀
D. 降低焚烧炉废热锅炉自发中压蒸汽压力
【多选题】
克劳斯反应器超温经常发生在___。
A. 开工时
B. 停工时
C. 配风比高时
D. 配风比低时
【多选题】
瓦斯带油,将会导致___。
A. 瓦斯减量而炉温下降
B. 瓦斯减量而炉温上升
C. 焚烧炉炉膛熄火
D. 阻火器失效
【多选题】
溶剂再生塔压力高的处理方法是___。
A. 检查是否克劳斯系统压力上升
B. 降低塔底蒸汽流量
C. 检查回流罐液面是否高
D. 提高回流量
【多选题】
溶剂再生塔压力高的危害是___。
A. 酸性气放火炬
B. 溶剂解吸效果变差
C. 溶剂老化
D. 溶剂浓度变低
【多选题】
停燃料气的处理方法是___。
A. 检查阻火器是否堵
B. 检查控制阀是否处于全关状态
C. 检查是否瓦斯分液罐是否满
D. 检查联锁是否完好
【多选题】
停高压除氧水对硫磺回收装置的影响是___。
A. 造成锅炉水位低
B. 损坏蒸汽过热器
C. 加工量降低
D. 对装置没有影响
【多选题】
在PID控制中,有___控制参数。
A. 比例度
B. 积分时间
C. 微分时间
D. 时间
【多选题】
酸性水脱气罐压力过低的原因___。
A. 脱气罐液面过低
B. 进料烃含量过小
C. 进料量小
D. 仪表故障
【多选题】
汽提塔塔顶压力低的原因是___。
A. 污水浓度高
B. 进料量小
C. 酸性气排出量大
D. 加热蒸汽量大
【多选题】
汽提塔底液面偏高的原因是___。
A. 加热蒸汽量大
B. 热进料量大
C. 净化水排出量小
D. 仪表失灵
【多选题】
汽提塔塔顶压力偏高的原因是___。
A. 加热蒸汽量大
B. 污水浓度高
C. 克劳斯系统压力高
D. 仪表失灵
【多选题】
汽提塔顶酸性气线堵的现象___。
A. 塔顶压力升高
B. 顶温下降
C. 酸性气流量降低
D. 塔顶压力下降
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