Estimation of nitrogen cost using a nitrogen generator oneself

This post was last edited by *aojiaoya0546 on 2016-8-1 at 18:50. Investing in it yourself definitely saves a lot of money; for a nitrogen production unit with a capacity of 600 cubic meters, using a 160KW air compressor and electricity costing 0.81 yuan per kilowatt hour, the electricity cost would be around 0.20 yuan. The total investment in the installation is around 800,000 yuan. Assuming it is used for 10 years, with 8,000 hours of operation per year, 600 cubic meters per hour of gas consumption, and a cost of 0.7 yuan per cubic meter for nitrogen, the total cost of gas over 10 years will be 33.6 million yuan. For a self-built installation, the cost is only: 80W for the device + 160KW*8000 hours*10 years + the salary of 2 employees for 10 years, which is around 100W = 12 million. It’s a simple economic calculation, easy to see at a glance. If the original poster is interested, we can discuss it in detail.

It is best to consider the overall cost for the actual user

In fact, there are advantages and disadvantages. Using delivered nitrogen saves time for the user, though it is more expensive; however, there are no costs associated with personnel management, safety measures, or equipment maintenance. This reduces the need for investment in infrastructure, although it introduces an additional external factor that affects the operation of the facility； Building it yourself costs less overall, but it involves extra efforts in personnel management, security, equipment maintenance, and investment in construction – it’s quite troublesome! Based on my personal experience, 600 liters is not a large volume; if liquid nitrogen is available in the vicinity, installing a vaporization station is the most suitable option.

Under no circumstances should you go for it. When the design institute proposed using nitrogen generators for us, I was against it, but they convinced the management that it would help save costs. Running it on the lower lane now: the cost of nitrogen for either side is over 1 yuan, and it often malfunctions; moreover, the quality of the nitrogen is poor. If nitrogen is available, try to buy nitrogen

Thank you for your suggestion. What size are your nitrogen generators?

All of this assumes that you purchase a reliable nitrogen generator. If you buy a domestically produced one of poor quality, it will start giving you problems after just one year of use; if the equipment is stable and of good quality, then the cost can be recovered within 2 years. I used to work at a liquid handling company, after all:P Additionally, the cost for pipeline gas is 0. 7 yuan/m3 is a bit expensive

Don’t buy gas; instead, set up a station. It’s better to purchase the liquid form, at 500 per ton

Can we talk about nitrogen generators? What kind of problems do you encounter frequently?

500 yuan per ton, are it over a dozen units that come out? How many liters?