Does the fixed-bed technology still have a future?
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Does the fixed-bed technology still have a future?
Fixed-bed gasifiers come in pressurized and atmospheric-pressure types, and they have certain advantages for coals with high ash fusion points. Pressurized gasification, such as that in the Lu Odd gasifier, enables the gasification of lignite, bituminous coal, and subbituminous coal; there is no need to grind the coal, as particles with a size range of 6–40 can be used, giving it an advantage in the gasification of coals with high ash and water content.
Hehe, it doesn’t seem to have much future. With the developments over these past few years, the original poster should realize that the advantage mentioned in point 2 will soon cease to be an advantage at all:handshake
Investing less is a huge advantage. These days, many private entrepreneurs running nitrogen fertilizer plants find that the most cost-effective gas generation furnace is the fixed-bed type! But it can only be done under the pretext of technological upgrades.
There is no absolute advantage, but there is still a certain relative advantage. From a development perspective, since fixed-bed systems require anthracite with a high melting point and high fixed carbon content, and such anthracite resources are relatively scarce, the comparative advantage of fixed-bed vaporization technology is diminishing amid the current sharp rise in coal prices. Nevertheless, this technology remains viable in regions of Shanxi where anthracite is abundant. In other areas where there are no corresponding coal resources, fixed-bed systems lose their viability.
:lol :victory: :)
There is still an advantage in terms of gas composition control, thanks to the coal slurry pressurized gasification unit
If there is a reliable supply of white coal, I think it’s still possible to do it. After all, the investment is low, the requirements for staff qualifications are not high, and the construction period is short. Moreover, after so many years of development, the UGI furnace has seen many technological improvements, and it is feasible to use it.
Who can provide the Luchi process flow? Thank you!
In fixed-bed systems, in addition to the constraints posed by coal lumps, there are also increasingly strict environmental protection requirements; moreover, it is difficult to treat wastewater from Lurgi reactors
Fixed-bed gasifiers, which are atmospheric-pressure gasifiers, have certain advantages when dealing with coal with a high ash fusion point. Pressurized gasification methods such as the Ruhr process can be used to gasify lignite, bituminous coal, and subbituminous coal; no coal grinding is required, and coal particles with a size range of 6–40 can be used, giving these methods an advantage in gasifying coal with high ash and water content. Oxygen-enriched oxidation is also a viable path for development, but it still needs further improvement due to limitations in air separation.