I would like to ask everyone: can a vertical natural gas buffer tank have air intake at the top and air outlet at the bottom, or vice versa?
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The natural gas inlet buffer tank is designed for a pressure of 2.5 Mpa. Is it feasible to use a design with gas entering from the top and exiting from the bottom, or vice versa? I’ve noticed that many manufacturers’ tanks are equipped with drain valves at the bottom, and in most cases the gas enters from the bottom and exits from the top. I would appreciate everyone’s advice!
Why not consider having air intake at the lower part of the cylinder (with a portion extending inward), air outlet at the top, and a drain port at the bottom? Unless it is for purifying natural gas to make it anhydrous and clean, it doesn’t matter whether the flow is from top to bottom or from bottom to top; the waste outlet can be placed at the lowest point of the bottom pipeline.
It’s so scary. A complete beginner, working behind closed doors on the design of natural gas production facilities. Is it reasonable and reliable enough in terms of design? Who would dare to purchase and use it?
I’m sorry; I’m really a beginner – my job isn’t related to my field of study, and I haven’t even studied principles of chemical engineering. I’m just asking whether it’s possible to do this; I’m currently learning about it.
Hello, thank you for your reply. I would like to ask an experienced colleague: besides the safety valve opening, can an exhaust port also be installed on the top of a vertical buffer tank? I’ve seen that some manufacturers provide an exhaust port on the upper part of the tank. Since I need two exhaust ports – one on the upper part and another on the top – I was wondering if that’s possible. When I asked the manufacturers, they said they only handle the production of the tanks themselves. . . .
Does the natural gas in your natural gas buffer tank contain water? This is a very important issue; if it contains water, it is recommended to introduce air tangentially along the wall of the tank in the middle, as this can help create a swirl effect that separates the water. There’s no issue with air outlet at the top; in the natural gas separators or water separators I build, the air outlet is located right in the middle of the top cover, while the safety valve can be placed on the side of the top cover. A drain is provided at the bottom of the container.
In fact, it’s not necessary to install a safety valve on the device; two outlets are certainly possible. If steam is introduced using the 7th floor method, shims need to be installed at the corresponding locations.
It contains no water; this is a buffer tank for gas supply. It is planned to have air intake at the bottom, with one outlet each at the top and on the sides, while temperature and pressure gauge connections will be provided on the side walls. There will also be a drain valve at the bottom. However, I am not an expert in tank design and cannot carry out calculations. I’m not sure whether the manufacturer can meet these requirements regarding pressure, volume, etc., or whether I need to provide them with drawings first so that they can proceed with the design.
Generally, a vent is provided at the very top of the upper head, while the safety valve outlet, pressure gauge outlet, and exhaust outlet can be located on a circle with a diameter of 70% (up to 80%) of that of the head. The air inlet is located at the lower part of the cylinder; it’s not known what the pressure is there. Generally, a manhole (access hole) should also be provided. Right below the lower head, a drain opening is provided.
To add more details on this issue: this is a natural gas buffer tank used on ships. During the first startup, nitrogen is used for purging, after which natural gas is used to displace the nitrogen; during maintenance, nitrogen is used to displace natural gas in order to inert the system. Since natural gas is lighter than nitrogen, natural gas should enter from above and nitrogen should exit from above, while nitrogen should enter from below and natural gas should exit from below. An arrangement with natural gas entering and exiting from exactly the same positions would be ideal, which is why I asked this question. I hope experts can provide some guidance