龙钢转炉煤气回收技术操作规程.doc

八万转炉煤气系统工艺技术操作规程目录0八万转炉煤气系统工艺技术操作规程目录llllllllllllllllllllllllll1-21 质量标准llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll32 工艺流程llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll32.1八万转炉煤气系统工艺流程示意图llllllllllllllllllllllllllllllllll32.2电除尘废水处理工艺流程图lllllllllllllllllllllllllllllllllllllllllllll3-42.3三通阀组处工艺流程图llllllllllllllllllllllllllllllllllllllllllllllllllll42.4工艺介绍lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll43 操作参数llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll6-73.1气柜操作参数llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll53.2电除尘水处理操作参数lllllllllllllllllllllllllllllllllllllllllllllllllllll53.3三阀组处主要工艺参数lllllllllllllllllllllllllllllllllllllllllllllllllllll63.4三阀组处报警联锁参数lllllllllllllllllllllllllllllllllllllllllllllllllllll64 主要设备技术性能lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll7-114.1煤气柜lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll74.2电除尘lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll84.3鼓风机 lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll94.4斜管沉淀池lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll94.5 多介质过滤器lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll104.6加药泵机械隔膜流量泵lllllllllllllllllllllllllllllllllllllllllllllllllllll104.7加药装置lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll104.8摆线针轮减速机llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll104.9 清水泵llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll114.10水封逆止阀llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll114.11三通阀lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll114.12旁通阀lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll115 运行操作llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll115.1 系统正常投运前操作llllllllllllllllllllllllllllllllllllllllllllllllllllllll115.1.1系统处理空气操作（见工艺流程示意图）lllllllllllllllllll115.1.2 系统送煤气操作（见工艺流程示意图）llllllllllllllllllllll125.2系统停煤气操作llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll135.3系统正常操作llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll155.3.1 气柜回收操作lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll155.3.2气柜停止回收操作lllllllllllllllllllllllllllllllllllllllllllllllllllllllllll155.3.3 气柜运行操作lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll155.3.4气柜运行中注意事项和严禁事项llllllllllllllllllllllllllllllllllll165.3.5紧急放散管操作注意事项lllllllllllllllllllllllllllllllllllllllllllllll175.3.6鼓风机的启停操作llllllllllllllllllllllllllllllllllllllllllllllllllllllllll175.3.7鼓风机的交换操作llllllllllllllllllllllllllllllllllllllllllllllllllllllllll185.3.8鼓风机处理煤气操作llllllllllllllllllllllllllllllllllllllllllllllllllllll185.3.9鼓风机送煤气操作llllllllllllllllllllllllllllllllllllllllllllllllllllllllll195.3.10 鼓风机运转中的注意事项llllllllllllllllllllllllllllllllllllllllllll195.3.11 电除尘送煤气操作llllllllllllllllllllllllllllllllllllllllllllllllllllllll205.3.12电除尘处理煤气操作lllllllllllllllllllllllllllllllllllllllllllllllllllll205.3.13 电除尘启动前的准备工作lllllllllllllllllllllllllllllllllllllllllllll215.3.14电除尘启动操作lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll215.3.15电除尘停机操作lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll225.3.16电除尘运行时注意事项llllllllllllllllllllllllllllllllllllllllllllllllll225.3.17 电除尘水处理操作llllllllllllllllllllllllllllllllllllllllllllllllllllllll235.3.18三通阀组处操作运行lllllllllllllllllllllllllllllllllllllllllllllllllllll245.4、特殊操作lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll255.4.1气柜异常状态的紧急处理规定llllllllllllllllllllllllllllllllllllllll25 5.4.2气柜紧急放散管的操作lllllllllllllllllllllllllllllllllllllllllllllllllll265.4.3鼓风机异常状态紧急处理规定llllllllllllllllllllllllllllllllllllllll27 5.4.4 电除尘异常状态的紧急处理规定lllllllllllllllllllllllllllllllllll28 5.4.5 主控室PLC故障时的操作lllllllllllllllllllllllllllllllllllllllllllllll28 5.4.6 站内停电故障操作llllllllllllllllllllllllllllllllllllllllllllllllllllllllll295.4.7柜前氧含量超标的操作llllllllllllllllllllllllllllllllllllllllllllllllllll295.4.8电除尘水处理异常情况操作lllllllllllllllllllllllllllllllllllllllllllll305.4.9三通阀组处故障操作llllllllllllllllllllllllllllllllllllllllllllllllllllllll305.4.10电动阀门操作lllllllllllllllllllllllllllllllllllllllllllllllllllllll l 31八万柜煤气系统报警联锁一览表lllllllllllllllllllllllllllllllllllllllllllllll32八万转炉煤气系统工艺技术操作规程1 、质量标准介质名称项目单位标准转炉煤气出站煤气含尘量mg / N m3<10出站煤气压力kPa<14出站煤气含氧量体积%<1电除尘废水处理设计处理水量m3/h30设计进水水质（ss）mg/L960实际出水水质（ss）mg/L202、工艺流程2.1八万转炉煤气系统工艺流程图（见附页）2.2电除尘废水处理工艺流程图如下 PAC加药装置废水汇集 调节池 污水提升泵 斜管沉淀池 中间水池 中间提升泵 污泥浓缩池多介质过滤器 清水池 污泥抽吸外运清水泵 电除尘器 2.3三通阀组处工艺流程框图如下：（合格煤气）转炉煤气 一次风机 三通切换阀门 水封逆止阀 气柜（不合格煤气） 放散烟囱点火三通阀组处工艺流程图（见附页）2.4工艺介绍2.4.1由炼钢厂一次烟气除尘风机房后的三通切换阀出口总管、水封逆止阀来的转炉煤气经2020×8管道送至八万立方米转炉煤气柜，经柜后电除尘净化，加压站升压，送入高炉煤气管网。2.4.2本站设有八万立方米威金斯转炉煤气柜一座，SDB25-18型湿法电除尘2台（一用一备），MZ300-1800型鼓风机3台（二用一备）。2.4.3本站采用两路电源供电。由3200高压配电室来的6kV高压电经本站1台800kVA电力变压器降至380V低压电供站内使用。本站另一路电源来自11#水源井，380伏，30-40KVA直接供低压配电柜,特殊情况下作为保安电源或站内检修使用。2.4.4本站用氮气(包括三通阀处)来自钢424-425支架上氮气主管，管径DN100，压力0.65MPa。2.4.5生产净化水来自公司一类水主管网，管径DN200，压力0.5MPa。2.4.6生产、生活蒸汽分别来自球团627支架处生产、生活蒸汽主管网，生产管径为DN80，生活管径为DN50，压力均为（0.2-0.5） MPa。2.4.7本站电除尘喷淋产生的污水，经站内污水处理进行循环使用。2.4.8三通阀处介质及动力来源2.4.8.1回收炼钢1#、2#、3#、4#转炉冶炼时产生的转炉煤气。2.4.8.2三通阀岗位380V电源来自炼钢动力作业区配电室。2.4.8.3蒸汽来自钢424-425支架DN250的生产蒸汽管道，压力（0.2-0.4 ）MPa。2.4.8.4水来自炼钢动力作业区水管道（该岗位向东约50米）。3、 操作参数3.1气柜操作参数序号名称正常值报警值紧急报警值（联锁）1进柜煤气氧含量（体积%）2222进柜煤气CO含量（体积%）353柜内压力（kPa）2.5-3.02.2,3.12.2,3.14气柜柜容（万m3）170.8、11.3、1.5 6.3、6.77、7.20.8、17、7.25气柜升降速度（m/min）0-46进柜煤气温度（）0-70707柜后煤气氧含量（体积%）0.80.8，118鼓风机入口煤气压力（kPa）1.52.9410.59生产净化水主管压力（MPa）0.350.3510主氮气管压力（MPa）0.50.511环境CO含量(ppm)050、10012鼓风机轴承温度（）6513加压站出口工作压力（kPa）8-148， 1014转炉煤气出站调节阀动作压力（kPa）8-13 7，1515转炉煤气循环管调节阀动作压力（kPa）8-133.2电除尘水处理操作参数序号名称数值1加药量10g/T污水2外供水量（26-30）T/h3加药泵流量50L/h4药液配比浓度1%5正洗进水压力（0.2-0.3 ）MPa6正洗出水压力（0.05-0.1） MPa7污水泵出口流量（27-30）T/h8多介质过滤器上水流量（27-30）T/h9清水泵出水压力（0.35-0.4）MPa10污水池，中间水池污水池水位与水泵的联锁自动状态：中间水位：开一台泵；低水位：全停；高水位：开两台泵水池水位联锁：清水池水位在高位中间水池泵全停；中间水池水在高位，污水泵全停11加药泵自动状态：随污水泵的运行而运行，停止而停止12倒换泵每隔4h自动倒换13正洗8h 14反洗5分钟15排污30秒3.3三阀组处主要工艺参数序号名称数值1CO浓度35%2O2含量1.5%3氮气压力0.45 MPa4水压力0.2 MPa5蒸汽压力（0.2-0.4 ）MPa3.4三阀组处报警联锁参数3.4.1 氮气压力大于0.45 MPa作为回收条件之一；3.4.2 CO浓度大于35%作为回收条件之一；3.4.3 O2含量小于1.5%作为回收条件之一；3.4.4站内允许回收/拒绝回收信号作为回收条件之一；3.4.5煤气回收时限信号（三通阀开到位开始计时，计时到，停止煤气回收）作为回收条件之一（60-720S）；3.4.6画面煤气分析仪显示红色，表示转入内控，分析仪不能自动工作，煤气回收终止；3.4.7氧气快速切断阀打开30S作为回收条件之一；3.4.8三通阀动作时间超过20S，旁通阀联锁打开；3.4.9三通阀回收侧到位，联锁打开转炉煤气点火系统清扫蒸汽阀门30S，进行灭火；3.4.10旁通阀关闭作为回收条件之一；3.4.11一次风机运行作为回收条件之一；3.4.12分析仪在外控时，氧气切断阀打开30S，分析仪转入分析;氧气切断阀关闭，分析仪转入反吹；3.4.13煤气由放散转入回收：水封逆止阀开到位后三通阀动作打开。煤气由回收转入放散：停收信号发出三通阀开始关闭；停收信号发出 10S后水封逆止阀开始关闭； 3.4.14水封逆止阀3.4.14.1高水位报警：H800mm3.4.14.2低水位报警：L400 mm 3.4.14.3极低水位报警：LL200 mm自动联锁打开补水球阀给水封逆止阀补水，至400 mm停止补水。3.4.14.4 380V断电的情况下，三通阀、水封逆止阀自动关闭，旁通阀自动打开。3.4.15阀门动作超时报警三通阀：20S 旁通阀：20S 水封逆止阀：20S 强制补水阀：20 S4 、主要设备技术性能4.1煤气柜八 万 立 方 米 威 金 斯 式 气 柜名称单位型号及参数型号1座威金斯干式橡胶密封型额定容量m380000工作压力kPa一级2.45二级2.94侧板内径m58侧板高度m39.07活塞有效行程m31.55活塞倾斜极限mm±30活塞、T挡板、柜壁同心度mm120橡胶膜厚度mm3橡胶膜规格m一级直径55.4高6.43二级直径57.6高10.35紧 急 放 散 管型号工作介质转炉煤气公称直径630mm放散量约27000m3/h工作压力kPa产品编号实验压力kPa数量4个工作温度 出厂日期生产厂家4.2 电除尘电 除 尘 器名称单位型号及参数湿法电除尘2台SDB25-18煤气处理量N m3/ h36000煤气温度40-70工作压力Pa3500泄爆阀泄爆压力Pa4600入口煤气含尘量mg/ N m3100-150出口煤气含尘量mg/ N m310有效截面积m225电场风速m/s0.40有效电场高度mm4500有效电场宽度mm5400喷洗水水量t/h连续:15t/h, 断续:10t/h喷洗水压力MPa0.3-0.5电场数个1压力损失Pa500同极间距mm300设备外型尺寸mm5400112905690生产厂家 武汉中欣环保科技工程有限公司多 功 能 高 压 硅 整 流名称微机控制多功能高压硅整流型号GGAJ02 04/66额定频率50±1Hz 额定交流电压380V出厂编号/240额定交流电流 99A重量900kg 额定输出电压60kv出厂日期2006-12额定输出电流 400mA数量2套生产厂家中国厦门绿洋电气有限公司4.3 鼓风机鼓 风 机型号MZ300-1800进口流量18000m3/h介质密度1.2kg/m3全压18000Pa升压能力15000Pa主轴转速2950r/min产品编号介质温度20制造日期2006-12生产厂家杭州余杭特种风机厂数量3台鼓 风 机 配 用 电 机电机型号YB2315L1-2接法/Y额定功率160kw防爆标志ExdBT4额定电流279.3A绝缘等级F额定电压380v工作制S1转速2975r/min数量3台额定频率50Hz制造日期2006-6重量1206Kg生产厂家江苏大中电机股份有限司4.4斜管沉淀池型号XGL-30流量30m3/h尺寸外形2.5x6.0x3.2出厂编号出厂日期2007.4材质Q235衬玻璃钢制造厂：宜兴市环球水处理设备厂数量1台设计表面负荷2.4m3/m2.h池体尺寸(m)2.5x6.0x3.2其中反应池(m)2.5x5.0x3.2沉 淀 区2.5x5.0x3.2（包含3个污泥斗）斜管技术参数型号六角蜂窝型斜管 50x1000mm材质PPC（聚丙烯）水平倾角60º壁厚=0.5mm附件填料支架/网格型（12.50 m2）填料体积12.50 m34.5 多介质过滤器型号GSDL-2000流量30m3/h直径(mm)2000设备高度3.2m出厂编号出厂日期2007.4制造厂宜兴市环球水处理设备厂数量1台4.6加药泵机械隔膜流量泵型号JWM-A1000/0.5冲程次数150spm额定压力0.5Mpa隔膜直径84mm泵流量100L/h电机380V/50HZ转速1350r/m功率60W绝缘等级E出厂编号61314出厂日期2006.8制造厂浙江爱利浦泵业有限公司数量2台4.7加药装置型号JY-I搅拌功率0.37KW外形尺寸1.35x1.35x2.5材质Q235A衬玻璃钢溶药箱容积0.5m3储药箱容积1.0m34.8摆线针轮减速机（包括电机）：型号BL009-11-0.3KW输入：1500r/min数量：1台制造厂家：常州法斯特机械厂三相异步电动机型号YS7124-4接法Y生产厂家常州市武进双平电机有限公司电压380V工作制SI数量1台功率0.37KW绝缘等级B级转速1400r/min电流1.12A防护等级2P44标准代号JB11009-19914.9清水泵：型号ISWR65250A转速2900 r/min流量23.5m3/h功率3KW扬程13m数量4台生产厂家：上海海洋水泵厂4.10水封逆止阀型号公称通径公称压力适用温度出厂编号SF645W-0.0601200*800mm0.006MPa1203#：13464#：1347出厂日期07.4生产厂家启东市宏达阀门有限公司4.11三通阀型号公称通径公称压力适用温度出厂编号SQ643X-11200 mm0.1MPa120数量2生产厂家启东市宏达阀门有限公司4.12旁通阀型号公称通径公称压力适用温度出厂编号Q647X-1DN1000 mm0.1MPa120数量2生产厂家启东市宏达阀门有限公司5 、运行操作5.1系统正常投运前操作5.1.1系统处理空气操作（见工艺流程示意图）5.1.1.1 检查系统管线封闭良好,用空气将气柜升到足够高，将柜内皮膜完全伸展开，停止空气进柜。5.1.1.2 封气柜进、出口U型水封，回流管电动蝶阀关，开气柜进、出口U型管、回流管电动蝶阀靠气柜侧放散管，开气柜紧急放散管将柜内气体排出，使柜位接近一米（注意：柜内压力不得低于一级压力，控制气柜下降速度防止T档板与T档板支架、活塞与柜底板冲撞），关上述所有放散管。5.1.1.3 开柜前管主通氮阀，向柜内通入氮气。5.1.1.4 用氮气使气柜升至1万立方米，依次开气柜本体紧急放散管（注意：柜内压力不得低于一级压力，控制气柜下降速度防止活塞与柜底板冲撞），使柜位接近一米,关所有放散管。5.1.1.5 重复5.1.1.4项操作，直至柜内和气柜进、出口U型水封、回流管蝶阀靠气柜侧放散管处取样分析氧含量小于2%为止。5.1.1.6 继续通氮气将气柜升到2万立方米。5.1.1.7 开气柜进、出口U型水封。5.1.1.8 开通柜前管，开转炉一次风机房2个接口处放散管，用柜内合格氮气对柜前管进行吹扫，取样分析，氧含量小于2%为止。关转炉一次风机房2个接口处放散管。5.1.1.9 开通柜后管到加压站低压管（开1#、2#电除尘出、入口盲板，开电除尘出、入口阀,开电除尘旁通阀），开加压站低压管末端放散管和1#、2#电除尘本体放散管，用柜内合格氮气对柜后管到加压站低压管进行吹扫，分别取样分析，氧含量小于2%为止，关加压站低压管末端放散管和1#、2#电除尘本体放散管。对1#、2#电除尘共8个绝缘子箱分别进行氮气吹扫氧含量小于2%。5.1.1.10 开通加压站内到加压站出口盲板处管道（依次开1#3#鼓风机进出口盲板、蝶阀，机前调节阀，加压站出口蝶阀、调节阀），用柜内合格氮气对加压站内、出口盲板处管道进行吹扫，分别在加压站高压管末端、出口管道盲板靠加压站侧末端放散管处取样分析，氧含量小于2%为止。关加压站高压管末端放散管。5.1.1.11 开通回流管（开回流管蝶阀、调节阀），用柜内合格氮气对回流管进行吹扫，在加压站出口盲板靠加压站侧末端放散管处取样分析氧含量小于2%为止，关该处放散管。关回流管调节阀。5.1.1.12 站内所有水槽、U型管的排气头、仪器仪表导管放气10分钟后关闭。5.1.1.13 关闭煤气柜通氮阀，停氮气，断开通氮气软管。至此煤气柜、加压站、电除尘、回流管、站内高压煤气管处理空气合格。5.1.1.14 开球602支架处转炉煤气管道的煤气放散管，开出站阀门，用氮气置换该段管道，在放散阀处检测氧含量小于2%为和格，关闭该放散管阀门。5.1.2系统送煤气操作（见工艺流程图）5.1.2.1 封气柜出口U型水封、回流管蝶阀关。开气柜进口U型水封,开柜进口蝶阀。关柜前放散管阀门。5.1.2.2 依次开气柜紧急放散管将柜位降到一米，（注意：柜内压力不得低于一级压力，控制气柜下降速度，防止T档板与T档板支架、活塞与柜底板冲撞），关上述所有放散管。5.1.2.3 联系三通阀岗位进行转炉煤气回收。5.1.2.4 当气柜升至2万立方米时，重复5.1.2.2和5.1.2.3操作，直到取柜内煤气样做爆发试验合格。5.1.2.5 开气柜出口阀、出口U型水封。5.1.2.6 开加压站低压管末端放散管和1#、2#电除尘本体放散管进行煤气赶氮气操作，分别在这三个点做爆发试验合格后关该放散管。5.1.2.7 开加压站高压管末端、出口管盲板靠加压站侧放散管，对加压站进行煤气赶氮气操作，分别在加压站高压管末端、出口管盲板靠加压站侧放散管处做爆发试验，合格后关高压管末端放散管。5.1.2.8 开回流蝶阀，在加压站高压管出口盲板靠加压站侧放散管处做爆发试验，合格后关该放散管。5.1.2.9 站内所有水槽、U型管的排气头、仪器仪表导管依次放气10分钟后关闭。5.1.2.10 至此煤气柜、加压站、电除尘、回流管、站内高压煤气管送煤气合格。5.1.2.11 用煤气置换球602支架至站内转炉煤气管道。5.1.2.12 所有设备恢复，处于备用状态。5.2系统停煤气操作5.2.1 确认所有转炉三通阀打放散位置，所有水封逆止阀关，水封逆止阀水位在高位。5.2.2 转炉煤气回收/拒收选择开关打拒收位置。5.2.3 关闭3#、4#盲板阀，并用氮气置换水封逆止阀至盲板阀间的煤气管道。5.2.4 封柜入口管U型水封并打开其西侧煤气放散管，稍开2个水封逆止阀处放散管，关闭2#阀，打开1#阀，从三通阀岗位处通入氮气对柜前管道进行置换，直到各放散管处理煤气合格、O2小于2%。之后开柜前U型水封，关闭柜前所有的煤气放散管，让氮气进柜。5.2.5 关12#、14#蝶阀，关闭球602支架处堵盲板阀。5.2.6 开柜本体放散管,使气柜降至5000立方米，封气柜出口U型水封、关回流管蝶阀。5.2.7 开气柜紧急放散管将气柜降至接近零位（注意控制气柜下降速度，防止T档板与T档板支架、活塞与柜底板冲撞，保持柜内压力不低于100Pa），关紧急放散管。5.2.8 开气柜通氮阀，使气柜升至5000立方米，依次开气柜本体紧急放散管及气柜进、出口U型水封、回流管蝶阀靠气柜侧放散管（保持柜内压力不低于100Pa），关各放散管5.2.9 重复5.2.8项操作，直至气柜进、出口U型水封、回流管蝶阀靠气柜侧放散管、柜内取样CO小于24ppm为止。5.2.10 继续向柜内通氮气，使气柜升至2万立方米以上。5.2.11 开气柜出口U型水封，开通柜后管到加压站低压管（确认柜出口阀开，开1#、2#电除尘出、入口盲板，开电除尘出、入口阀,开电除尘旁通阀），开加压站低压管末端放散管和1#、2#电除尘本体放散管，用柜内合格氮气对柜后管到加压站低压管进行吹扫，分别取样分析，CO小于24ppm为止。关加压站低压管末端放散管和1#、2#电除尘本体放散管。对1#、2#电除尘共8个绝缘子箱分别进行氮气吹扫确认CO小于24ppm为止。5.2.12 开通加压站内到加压站出口14#阀（依次开1#3#鼓风机进出口盲板、蝶阀，机前调节阀，加压站出口蝶阀、调节阀）前煤气放散管，用氮气进行吹扫直至合格。5.2.13 开通回流管（开回流管蝶阀、调节阀），用柜内合格氮气对回流管进行吹扫直至合格。关回流管调节阀。5.2.14用氮气置换球602支架至站内转炉煤气管道直至合格。5.2.15 待加压站处理完煤气后，启动鼓风机向柜内强制送风。5.2.16当气柜升至5000立方米后开气柜紧急放散管及气柜进、出口U型水封、回流管靠气柜侧放散管（保持柜内压力不低于100Pa），关各放散管，重复此操作直到柜内取样是空气。5.2.17停止鼓风机向柜内强制送风。开气柜人孔，处理煤气完毕。 5.3系统正常操作 5.3.1气柜回收操作5.3.1.1 检查气柜各辅助设施运行正常，气柜密封完好，仪器仪表完好，显示正常，报警联锁完好，气柜各运行参数值均在规定范围内。5.3.1.2检查气柜回收通道畅通,柜前U型水封已撤除，各有关安全联锁已投入运行。5.3.1.3 联系三通阀岗位,同意回收转炉煤气，选择“回收”信号，反馈三通阀岗位，并监视三通阀岗位发出的“正在回收”信号及气柜回收时的运行情况。5.3.1.4 柜容7万立方米时，在自动状态下联锁将动作，控制三通阀岗位水封逆止阀、三通阀关闭,若自动失灵，则采用联络信号或电话联系向三通阀岗位发出“拒绝回收”信号。柜容7.2万立方米时，在自动状态下柜入口阀联锁关闭，柜前放散管阀自动打开。5.3.1.5 当柜容降至1.3万m3 时，视具体情况，控制转炉煤气送量以减缓气柜下降速度，当柜容降至1万立方米时，转炉煤气加压机将联锁停机，电除尘联锁掉电。当联锁停机失灵时，应采用手动停机。5.3.2气柜停止回收操作5.3.2.1 当气柜柜容7万立方米或因故无法回收时，应联系三通阀岗位说明情况，发出“拒收”信号，并视具体情况要求三通阀岗位关水封逆止阀、关三通阀。5.3.2.2 当进柜煤气温度超过70时，应拒收煤气。5.3.2.3柜前管道内应处于正压状态。当气柜柜容降至1万立方米时，停止向外送气。5.3.2.4当柜前氧含量大于2%时，在自动状态下，联锁三通阀打到放散位置,关水封逆止阀。柜入口阀联锁关闭，柜前放散管阀自动打开。5.3.2.5当柜前煤气压力大于4200 Pa时，在自动状态下联锁三通阀打放散侧。5.3.2.6当柜入口阀离开开极限时，在自动状态下联锁三通阀、水封逆止阀关闭。5.3.3气柜运行操作5.3.3.1气柜在1.36.7万立方米之间运行。（第一次柜容高报警6.3万立方米，可解除报警。第二次柜容高报警6.7万立方米，不可解除报警。柜容达到7万立方米以上，联锁信号致使水封逆止阀、三通阀关闭。柜容达到7.2万立方米联锁信号致使柜入口阀关闭，柜前放散管阀打开。第一次柜容低报警1.5万立方米，可解除报警。第二次柜容低报警1.3万立方米，不可解除报警。当柜容低于1万立方米，自动联锁鼓风机停机。5.3.3.2气柜运行速度控制在不大于4m/min。5.3.3.3气柜进口煤气温度不高于70。5.3.3.4气柜内活塞上部CO含量大于50ppm声光报警。5.3.3.5气柜进口煤气氧含量大于1.5%报警，氧含量大于2%报警并自动联锁三通阀岗位水封逆止阀、三通阀关闭，柜入口阀关闭，柜前放散管阀打开、电除尘掉电。5.3.3.6气柜进口管煤气压力超过4200Pa，联锁信号至使三通阀打放散侧。5.3.3.7 柜内煤气压力超过3100Pa时，联锁信号至使柜入口阀关闭，柜前放散管阀打开。柜内煤气压力低于2200Pa时，联锁