Improvement of gas generator
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In the ammonia synthesis process, taking a gas generator with a diameter of 3.0 meters as an example, the area of its water jacket is nearly 30 square meters. The strong cold wall effect makes it difficult for the fuel temperature in the area near the jacket – which accounts for about 8% of the furnace’s total area – to reach the levels required for efficient gas production. This not only reduces the efficiency of fuel utilization but also affects the quality and quantity of the produced gas. Additionally, since the temperature in the area near the walls does not reach the necessary level for sintering, the relative air flow resistance is low, resulting in increased wall flow and affecting the maintenance of the temperature throughout the entire bed. Some have suggested using heat-resistant materials for insulation on the inner walls to reduce heat loss; I’m curious to hear everyone’s opinions :)
The use of a high-pressure jacket or a hot-wall jacket yields significant results. Additionally, installing anti-wall-flow devices – namely, adding some inclined slag-breaking strips in the upper part of the jacket – can effectively prevent wall flow from occurring.
Let me introduce the hot-wall jacket; I’ve never heard of it. There are also risks associated with using anti-flow devices – if their position isn’t controlled properly, it can lead to damage to the furnace, the formation of scale, waste, and reduced efficiency. It’s safer to start by controlling the process parameters.
The hot-wall jacket is different from other types of jackets; it consists of an outer sleeve with heat-absorbing fins attached to the furnace shell, and its effectiveness isn’t very good. It depends on what kind of coal you use for burning, so it’s best to design your own furnace system and control its operating parameters properly