Feasibility study on nitrogen-pressure transfer of liquid sulfur unloading
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In current sulfur-based acid production processes, liquid sulfur is generally unloaded into underground liquid sulfur tanks, and then submersible pumps are used to transfer it into the liquid sulfur storage tanks. If the quality of liquid sulfur purchased for sulfuric acid production is good, can it be unloaded into the liquid sulfur storage tank using nitrogen pressure? A 3000 m3 liquid sulfur storage tank is approximately 10 meters in height, and a pressure of 2.5 kilograms should be sufficient to achieve unloading by pressure. Are there any experts familiar with this application? Is it permissible according to the relevant standards? (The nitrogen pressure is applied to the liquid sulfur tank car; it is delivered using a pressure of 2.5–3 kg of nitrogen. We welcome discussions on safety and operability! Thank you.) ）
If a nitrogen pressure of 0.25~0.3 MPaG is to be used for pressurization, this 3000 m3 liquid sulfur storage tank will require anchor piles with a holding force of around 7500~9000 tons in order to be secured; otherwise, before the nitrogen pressure inside the tank reaches 0.1 MPaG, the tank will have already lifted off the ground.
It involves pushing a liquid tank truck into a liquid sulfur storage tank; how can a 3,000 cubic meter tank explode at atmospheric pressure?
It is possible to simply pump the liquid sulfur from the tank truck into a large tank with a capacity of 3,000 cubic meters. However, it is also important to avoid nitrogen escaping into the large tank when the liquid level in the tank is close to zero, as this could cause the large tank to become pressurized and topple over.
Yes, are there any relevant regulations restricting such operations? Additionally, the pressure relief issue of the liquid sulfur storage tank must indeed be taken into consideration
For a large tank with a capacity of 5000 m3, when the pressure rises to 20 Kpa, the tank lid blows off; it’s better to discharge it into the underground liquid sulfur tank.
It can’t fly; the outlet tube is very small, so the reaction force is not significant. As long as the tank can withstand the pressure, it’s fine
When using nitrogen with liquid sulfur, temperature must be taken into account; low temperatures can cause solidification and blockages
Okay, I’ll consider that. Ensure good insulation, as it will make unloading easier.