How to clean storage tanks and the layout of utility pipelines within the tank farm

1. When laying pipelines within the tank areas of petrochemical plants, in addition to process pipelines and fire protection pipelines, pipelines for nitrogen, steam, etc. should also be installed to meet the process requirements； 2. If the mass of medium to be heated is large, it is possible to recover the condensate water; however, it is important to consider whether a leak in the heating coil could contaminate the condensate water ； 3, 4: Whether compressed air and service stations are required should be determined based on the process requirements ； 5. Regarding tank cleaning, it depends crucially on what the medium is and whether water can be used ； Regarding the cleaning method, it depends on the size of the tank and whether there are any sedimented impurities; there cannot be a one-size-fits-all approach.

1. When laying pipelines within the tank areas of petrochemical plants, in addition to process pipelines and fire protection pipelines, pipelines for nitrogen, steam, etc. should also be installed to meet the process requirements； 2. If the mass of medium to be heated is large, it is possible to recover the condensate water; however, it is important to consider whether a leak in the heating coil could contaminate the condensate water ； 3, 4: Whether compressed air and service stations are required should be determined based on the process requirements ； 5. Regarding tank cleaning, it depends crucially on what the medium is and whether water can be used ； Regarding the cleaning method, it depends on the size of the tank and whether there are any sedimented impurities; there cannot be a one-size-fits-all approach. First of all, I would like to thank those who helped on the second floor. I still have the following questions that need answering: 1. Whether to install utility pipelines such as nitrogen and steam in a tank farm should indeed depend on the process requirements, which is beyond doubt. What I want to know is whether facilities needed for cleaning and purging the storage tanks must be considered in all tank farms “3, 4: Whether compressed air and service stations are required should be determined based on the process requirements ； ”----I’m just not clear about when and under what circumstances a service station needs to be established, and what the specific purpose of having such a station is Regarding tank cleaning, if I know that the material inside the tank can be cleaned using a certain medium, what is the specific procedure for using this cleaning medium in order to clean the tank? Is it necessary to determine the cleaning medium for tank cleaning at the initial design stage of the tank farm, and to install separate pipelines for this cleaning medium at the tank farm’s pipe supports?

Theoretically, line cleaning needs to be considered for all tanks used. Compressed air is mainly used for purging pipelines before starting up operations, while fire water is generally used for cleaning storage tanks; therefore, a separate cleaning pipeline may not be necessary.

1. When laying pipelines within the tank farm of petrochemical enterprises, in addition to process pipelines and fire-fighting pipelines, should nitrogen, compressed air, steam, or other pipelines also be installed? Apart from heating and nitrogen sealing (or purging), no other pipelines are generally installed. 2. If the materials in the tank area need to be heated, then there should be pipelines for heating media such as steam or hot water in that area. Is it also necessary to have pipelines for condensate water in such cases? Under what circumstances should condensate water be recovered, and under what circumstances should it be discharged on-site? Recycling can be considered when the volume is large; otherwise, it is discharged. 3. If the pipelines in the tank farm need to be purged, there should be purge pipelines such as nitrogen lines in the utility pipelines within the tank farm. But besides being used for purging, compressed air has other purposes as well – should it be installed on the pipe supports within the tank farm? Before putting it into use, it can be purged with compressed air; after operation, it can only be purged with nitrogen or inert gases. The pipe supports in common areas can be used for this purpose (based on the pipe diameter). 4. Is it necessary to set up a service station within the tank farm? What are the specific functions of such a service station? What pipelines or facilities are needed? I don’t quite understand; such service stations are generally not set up. 5. How is tank cleaning achieved? Should water or another medium be used? If water is to be used, where does it come from? Should the pipelines be installed on the pipe supports in the tank area during piping installation? Cleaning can be done manually or mechanically; if mechanical methods are used, temporary pipelines are employed, and fire water is usually applied, with this not generally taken into account during design. These are just my personal opinions for reference only! ! ! ! ! ! ! !

1. When laying pipelines within the tank farm of petrochemical enterprises, in addition to process pipelines and fire-fighting pipelines, should nitrogen, compressed air, steam, or other pipelines also be installed? Answer: Nitrogen, compressed air, and steam pipelines should be installed for use in cleaning and purging the tank area in the future. 2. If the materials in the tank area need to be heated, then there should be pipelines for heating media such as steam or hot water in that area. Is it also necessary to have pipelines for condensate water in such cases? Under what circumstances should condensate water be recovered, and under what circumstances should it be discharged on-site? Answer: The installation of the condensate pipeline depends on the properties of the material, as recycling condensate can help save energy and reduce consumption. Each case requires specific analysis. Moreover, the condensate water can be reused; it is advisable to recycle it, otherwise it should be discharged on-site. However, when discharged on-site, the \"white dragons\" phenomenon is likely to occur in winter, making it difficult to handle such situations. 3. If the pipelines in the tank farm need to be purged, there should be purge pipelines such as nitrogen lines in the utility pipelines within the tank farm. But besides being used for purging, compressed air has other purposes as well – should it be installed on the pipe supports within the tank farm? Answer: It can be purged with compressed air before being put into use, and only nitrogen should be used for purging after it is in operation. 4. Is it necessary to set up a service station within the tank farm? What are the specific functions of such a service station? What pipelines or facilities are needed? Answer: Our company does not have any service stations set up. There must be standards for establishing such stations, and not every tank area is suitable for one. 5. How is tank cleaning achieved? Should water or another medium be used? If water is to be used, where does it come from? Should the pipelines be installed on the pipe supports in the tank area during piping installation? Answer: We use fire water to clean our storage tanks; there are fire hydrants in the tank area, and by connecting a fire hose, it can be used. Some materials are difficult to clean; they can be cleaned with steam first, and then washed with water.

Use a tank cleaning machine; the specific material to be cleaned determines which type of cleaner to use – there are many combinations to consider. The goal is to prevent reactions and ensure mutual solubility. After that, ventilate the tank for a few days before allowing people to enter to clean it

1. If there are instruments in the tank area, instrument air may be required; if pipeline purging and heating are needed, steam will be necessary. Depending on the properties of the oil, nitrogen sealing might be required, meaning nitrogen is needed as well. According to the design, fire foam pipelines and fire sprinkler pipelines may be necessary. Some tank agitators require cooling with circulating water, so circulating water pipelines are also needed. 2. Condensate should preferably be recycled; discharging it on-site not only affects the aesthetic appearance but also represents a waste of water resources

With a tank cleaning machine, whatever material is used can be cleaned using appropriate methods; there are professional cleaning companies that provide thorough, fast, and safe cleaning.