How much loss is there in converting coke oven gas into LNG?
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It’s dropped in price again; which factories are still in operation? What is the load level, and whether it results in losses or profits? It would be great if everyone could share their insights on this.
Excluding depreciation and including taxes, there is a slight loss
If it’s one’s own gas supply, as long as it’s turned on, there’s no loss to account for.
It’s a loss – just the cost of electricity and light alone amounts to 1,500 yuan per ton! 1.5 yuan per kilowatt-hour of electricity!
The cost of electricity alone amounts to 1,500 yuan per ton. How much is one unit of electricity?
The electricity cost alone amounts to 1,500 yuan per ton. How is that calculated?
Let’s take a look at our consumption figures for coke oven gas: the gas consumption is 2.27 Nm3 per Nm3 of LNG; electricity consumption is 1.06 kWh per Nm3 of LNG. The cost of refrigerant used is approximately 0.01 yuan per Nm3. The steam generated as a by-product is 0.62 KG per Nm3 of LNG, while the hydrogen-rich exhaust gas amounts to 0.432 Nm3 per Nm3 of LNG
As long as the centrifuge is powered by steam, the cost mainly depends on the pricing of gas
Do you use so little gas?
The actual measurement values will vary from one plant to another. Mainly, our coke oven gas is mixed with the hydrogen-rich gas produced by the tar hydrogenation process; as a result, the concentration of methane + CO + CO2 is relatively high. By subjecting this gas to deep cooling, the methane content can be increased to 73–75%, which means that the gas consumption is relatively low
The methane content in our extremely cold environment is 83+, and the gas consumption is still 2.4!