Hydrogen peroxide pipeline installation
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I’m seeking help from everyone**. Our factory plans to install a hydrogen peroxide pipeline, running from the storage tank to the workshop; the hydrogen peroxide concentration in this pipeline will be 30%. What valves, level gauges, and safety devices are needed, and how should they be installed?
1. Are level gauges installed in the storage tanks of the tank farm?
Your title is not described clearly. 1. Are level gauges installed in the storage tanks in the tank farm? 2. Are buffer storage tanks available as a backup in the workshop? If a storage tank is to be installed, a level gauge and level gauge alarms must be added; necessary alarms and interlocks should be established in accordance with the safety classification requirements for process instruments. 3. Is the hydrogen peroxide coming from the tank area utilized by means of pressure difference? 4. Is the hydrogen peroxide coming from the tank area pumped into the workshop? 5. Has a stabilizer been added to the hydrogen peroxide tank area? 6. Without a stabilizer, when hydrogen peroxide is pumped in, the pressure in the storage tank rises; therefore, safety valves, flares, or vent systems must be installed. 7. The material should be grade 304 or better; SCH80 is preferred, but SCH40 can also be used depending on the circumstances. 8. For level control, a differential pressure level sensor is added to the storage tank; high and low limit values are then set. If differential pressure transmission is used, the additional LV-valve is connected to the incoming FV-valve. If pumping is used, then a valve with LV designation should be employed, with the pump’s start signal connected in series; alternatively, LG/LT can be used to control the transmission process, whether in the form of FV or by shutting off the pump. Add designs based on the level of detail provided in your question; this part is not difficult.
If the risk level of your process is high, it is recommended to add cut-off valves on the transfer pipelines as well； Depending on the process ； I’ve encountered this; please correct me if I’m wrong.
If it is a tank, two types of level gauges are required by regulations: one local and one with remote control; the remote one is connected to the DCS for interlocking with the pump, and a root valve is installed on the level gauge. The volume and pressure of the storage tank are key factors in the selection process. A recovery tank is connected to the outlet of the safety valve at the top; details can be found in relevant documentation