Have you heard of using dry adsorption to harness low-temperature thermal energy to drive a screw generator to produce electricity?
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I recently learned about a technology that uses dry-sorption low-temperature geothermal energy to drive screw generators for power generation. Are there any manufacturers that actually use this technology?
What is the efficiency of a screw generator? What are the advantages compared to turbines?
The utilization of low-temperature geothermal energy is currently very limited, and there are few products available; if any do exist, their prices are quite high. Plants with a sulfuric acid production capacity of less than 300,000 tons per year certainly do not use this technology. Those who have information or experience in this area are welcome to share it with us. This post was last edited by Peach blossoms are in bloom on 2009-4-2 20:44]
The dry absorption temperature is generally below 90°C, which makes it difficult to use this method. Moreover, the dry absorption section in sulfuric acid plants is prone to problems, with a high likelihood of leaks; therefore, there are still many issues that need to be addressed when using low temperatures.
At present, the Americans are still the most advanced in terms of technology for recovering low-temperature thermal energy through dry absorption using sulfuric acid.
A few days ago, my company inspected domestic low-temperature recovery units: one set designed for a capacity of 300,000 tons, along with a pilot-scale unit. On the surface and from what was described to me, they seemed quite good; of course, American products are still the best, but their prices are too high, and the time required to recover the investment is too long – small-scale operations cannot afford such things.