The feasibility study for Yankuang Group’s coal-to-oil project is progressing smoothly
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This post was last edited by jordan569 on 2013-1-6 at 21:30. On November 21, 2011, a seminar on the preparation of the feasibility study report for Yankuang Group’s project involving 3.4 million tons per year of direct liquefaction, indirect liquefaction-based oil production, and the use of microalgae to absorb CO2 for the production of biological fertilizers was held in Shanghai. Representatives from the American company Accelergy, China Tianchen Engineering Co., Ltd., Shanghai Yankuang Energy Technology R&D Co., Ltd., and Ordos Energy Chemical Company attended the meeting. . Note # ) # # , . hcbbs
Direct liquefaction, indirect liquefaction combined with oil production, and the use of microalgae to absorb CO2 for producing biological fertilizers – this is a great idea that contributes to environmental protection and comprehensive utilization
Well, their technology for using microalgae to absorb CO2 is quite interesting; the Americans are very confident about it and talk about it with great enthusiasm
What is the market situation for the biofertilizer produced by these microalgae through CO2 absorption? How do its economic benefits compare to those of traditional CCS technologies? Is it possible that this approach is implemented merely to gain publicity at the expense of losses, and could it win some kind of innovation award?
The idea of microalgae absorbing CO2 is good, but cultivating microalgae is also a process that requires energy and generates CO2; it’s not clear whether the amount of CO2 absorbed can exceed the amount emitted
Reply to 5# bj*aobu: I’m not very familiar with this technology itself. From what they’ve explained, it involves microalgae absorbing CO2; the microalgae can be cultivated locally, used to absorb CO2, and then the cultivated microalgae can be spread in the soil for further use. That was truly “outstanding””
This post was last edited by *aojungnft on 2011-11-30 21:38. Microalgae – the concept is good; they certainly absorb CO2, and the amount absorbed is definitely greater than the amount emitted. After all, the structural component of microalgae’s framework is lignin, which consists of sugar-like molecules containing C, H, and O； However, to cultivate microalgae, fertilization is required, as their natural growth rate is relatively slow. Fertilizer has to come from ammonia synthesis plants again. Microalgae also die relatively easily, and they have certain requirements regarding their growth environment. Microalgae that thrive in one area are likely to be eliminated by the local microbial community when transferred to another area. The subsequent processing of microalgae is currently the bottleneck; removing large amounts of water and drying them require a significant amount of energy. To promote a concept, one will surely only talk about the good aspects, but when it comes to actual application or mass production, things are different. ------------------- I took another look; it’s about using microalgae to make fertilizer, which seems like a great idea as it avoids the major problems associated with processing microalgae. However, the process of producing biological fertilizer is essentially a biological fermentation process – has the gas generated during this fermentation been taken into consideration? The greenhouse effect caused by the methane produced is much greater than that of CO2; I remember it being said to be 11 times greater. In other words, if only 1/10 of the carbon that is sequestered is converted into hydrocarbons by microorganisms, then from the perspective of greenhouse gas emissions, this process is completely pointless. Returning to the issue of microalgae feeding, ignoring all other elements and focusing solely on N: microalgae need N to grow. Where does this N come from? It comes from synthetic ammonia; fertilizers are used to supply N to the algae, just as fertilizers are used to nourish crops. In other words, in order to provide N for crops, I use what sounds like an excellent biological algal fertilizer; and in order to provide N for algae, I use fertilizers produced from synthetic ammonia. So what is being done here? Why not just apply fertilizer to the crops? To take such a long detour – that’s crazy. Many things sound good, but often the factors that should be taken into account are not.
Bio-fertilizers do not enjoy high awareness in the Chinese market, and their prospects are uncertain
I would like to ask what technology this combined direct liquefaction and indirect liquefaction oil production method is? Since it is said that Yankuang has been working on indirect liquefaction technology all along and has never ventured into the field of direct liquefaction, the sudden introduction of the concept of direct liquefaction this time is hopefully not an attempt to repackage and hype up a concept