1、废气管道上在线废气浓度检测仪与废气切断阀的距离

1. The distance between the online exhaust gas concentration detector on the exhaust gas pipeline and the exhaust gas cut-off valve

目前，RTO装置在线度气浓度检测仪一般都设置2个，如并且在在线废气浓度检测仪后一定距离处设置度气切断阀。当高浓度气体经过在线废气浓度检测仪后，废气切断阀应在高浓度气体到达前完全关闭。即在线废气浓度检测仪到切断阀的距离应大于在线度气浓度检测响应时间和废气切断阀关闭时间总和内气体流经的管道长度。

At present, RTO devices are generally equipped with two online gas concentration detectors, and a gas cut-off valve is installed at a certain distance behind the online exhaust gas concentration detector. After the high concentration gas passes through the online exhaust gas concentration detector, the exhaust gas cut-off valve should be completely closed before the high concentration gas arrives. The distance from the online exhaust gas concentration detector to the cut-off valve should be greater than the length of the pipeline through which the gas flows within the sum of the online gas concentration detection response time and the exhaust gas cut-off valve closing time.

2、新风稀释及风机控制

2. Fresh air dilution and fan control

为降低爆炸风险，RTO装置应增加相应的逻辑控制，即当检测到高浓度气体时，RTO装置触发联锁停车，即废气紧急排放阀打开，废气切断阀关闭，新鲜空气阀门打开，主风机降低风量运行，确保炉内一直进入较低浓度的气体。

To reduce the risk of explosion, the RTO device should be equipped with corresponding logic control, that is, when high concentration gas is detected, the RTO device triggers interlocking shutdown, that is, the emergency exhaust gas discharge valve opens, the exhaust gas cut-off valve closes, the fresh air valve opens, and the main fan reduces the air volume to ensure that lower concentration gas always enters the furnace.

3、阻火器与爆破片问题

3. Issues with flame arresters and explosive discs

阻火器是非常重要的安全附件，阻火器必须经过安全鉴定，确定其是否符合要求，不合格的阻火器将不能有效隔离能量的传播，而导致闪爆事件。若爆破片爆破压力和爆破面积不当，不能有效释放能量，从而造成设备爆炸损坏等事故后果。较低的爆破压力以及废气管道上多个爆破片的泄能部位，能有效防止设备和管道损坏，减少事故的发生。

Flame arresters are very important safety accessories, and they must undergo safety appraisal to determine whether they meet the requirements. Unqualified flame arresters will not be able to effectively isolate the spread of energy, leading to flash explosions. If the blasting pressure and blasting area of the explosive disc are not appropriate, it cannot effectively release energy, resulting in accident consequences such as equipment explosion and damage. The lower blasting pressure and multiple explosive discs on the exhaust gas pipeline can effectively prevent equipment and pipeline damage and reduce the occurrence of accidents.

4、风机材质选择

4. Fan material selection

由于防腐蚀需要，有的风机叶轮材质选为非金属，容易产生静电，导致事故发生，建议选为金属材质，但考虑防腐措施。

Due to the need for anti-corrosion, some fan impellers are made of non-metallic materials, which can easily generate static electricity and cause accidents. It is recommended to choose metallic materials, but anti-corrosion measures should be considered.

5、操作压力选择

5. Selection of operating pressure

考虑到某些废气为有毒气体，为防止正压状态下气体泄漏对现场人员的人身伤害，RTO的操作压力建议采用微负压操作。同时，应根据泄漏露点的位置设置相应的有毒气体检测仪，泄漏点也应安装爆破片。

Considering that some exhaust gases are toxic, in order to prevent gas leakage under positive pressure from causing personal injury to on-site personnel, it is recommended to use micro negative pressure operation for the operating pressure of RTO. At the same time, corresponding toxic gas detectors should be installed according to the location of the leakage dew point, and explosive discs should also be installed at the leakage point.