With so many gasification furnaces available on the market these days, which one is more advanced?

Shell’s costs are too high; the investment in Jinhua furnaces is more reasonable

Shell has excessively high cost investments, while Jinhua’s furnaces require less investment; they generate steam as a by-product, enabling heat recovery

What is suitable for oneself is the best. The operating temperature depends on the structure of the vaporization furnace; if the FT temperature of your coal isn’t high, there’s no need to use such a high operating temperature

Not sure, let’s take a look: lol

There is no latest technology available; only the technology that best suits one’s own circumstances matters. It’s not possible to generalize whether a certain technology is advanced or not. Take constant-pressure fixed-bed gasification, which is considered the most outdated technology for example. It is a technique that originated in the Ruhr region of Germany in the 1930s, and it is still being used in China to this day – that’s quite outdated, isn’t it? However, in terms of coal consumption, oxygen consumption, investment in the gasification plant, and construction time under normal pressure, which gasification technology can perform better than it? Yet its disadvantages are just as prominent as its advantages; for example, its electricity consumption per ton of ammonia is several times higher than that of the fluidized bed system. There’s nothing to do about it – after all, it operates under normal pressure. Therefore, each type of technology has its own advantages; it depends mainly on the needs and objectives of the user. Choosing a technology that suits one’s own requirements is a more rational approach than simply pursuing advanced features blindly.

The space furnace is a domestically produced version of Shell’s product; the high cost associated with Shell lies in the substantial investments made in safety measures. foreigners place great emphasis on safety, and the complexity of its systems is truly astonishing. Although the investment is high and the operation is difficult, its safety level is the highest among dry coal powder gasification technologies. The space furnace simplifies Shell’s safety features by removing many elements that they considered unnecessary, and thanks to the use of domestic components, the investment required is naturally lower than that for Shell’s version. The localization of space furnaces has been fairly successful. The predecessor of the Jinhua furnace was the Tsinghua furnace. After Linde Gas had a dispute with Tsinghua, Tsinghua partnered with Jincheng Coal to rename it the Jinhua furnace. The Jinhua furnace is a coal slurry gasification furnace equipped with water-cooled walls; although the refractory bricks were removed, this led to increased oxygen and coal consumption. The purpose of the upper gasification unit is to produce a large amount of useful gas. Producing this useful gas requires energy; the Tsinghua furnace uses part of this energy to generate steam, which inevitably reduces the energy available for gas production. Therefore, to produce the same amount of gas as that produced by the water-coal slurry in refractory bricks, more energy is needed to compensate for the energy absorbed by the water-cooled walls. As for the Ruhr furnace, there’s even more to its story. The original Ruhr furnace was developed by the German company Ruhr; later, a new version of this furnace was created through a collaboration between the British company BG and Ruhr – and that is the BGL furnace, which represents pressurized fixed-bed gasification technology. Ever since a state-owned design institute designed a BGL once, they have used those same drawings to sell Luchi furnaces. I heard there were even lawsuits over this, and now they still sell them secretly; as a result, the furnaces sold by this institute are always of only one size, following that same process which may not be reasonable at all. So many people in the industry joke that it’s like a Peking duck restaurant – once you’re there, you can only eat Peking duck of that flavor; if you want a different flavor, sorry, we don’t have it, haha, just joking.

Currently, there is a great variety of developments in gasification furnaces; just the ones I serve, there are already dozens of them

Correction: It’s a collaboration with Yangmei Chemical Machinery, not Jinmei!

The space furnace should be fine, and the operator is doing a good job as well; after all, its performance has been the best among these companies involved in pulverized coal gasification over the past few years.