Approaches to the upgrading and transformation of sulfuric acid plants
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This post was last edited by in the blink of an eye on 2018-7-7 22:01. Most sulfuric acid plants in China use small to medium-sized acid production units with low technical standards; some factories even still employ wire mesh foam catchers in their absorption towers! Although the construction costs of these sulfuric acid plants are low, it is difficult to ensure their operational performance, and there are many common problems. 1. The purification standards are not met; some facilities use domestically produced power wave washing systems, and the gas cooling tower plates need to be replaced and cleaned frequently. In many factories, the levels of dust and arsenic at the purification output exceed the allowed limits. 2. There is a high acid content downstream of the dry absorption tower, which affects downstream equipment such as the conversion gas-gas heat exchanger and even the catalyst. Some factories have to replace their heat exchangers every 2 years, while in other factories, the high acidity at the outlet of the drying tower leads to corrosion of the guide vanes and impellers of the SO2 fans downstream. When a heat exchanger leaks, it can cause a significant increase in exhaust SO2 levels in certain heat exchange processes! 2. The screening cycle for conversion catalysts is short, and the maintenance costs are not low. For the aforementioned sulfuric acid plant, in reality, due to high maintenance costs, more money is spent in the long run, and it also causes great fatigue among the plant managers, engineering technicians, and equipment maintenance staff. Often, the equipment gets damaged, and people’s health is also ruined. Is there a way to break out of the above cycle? The answer is yes. Sulfuric acid plants must pay close attention to purification parameters and the mist eliminators in the dry absorption towers. It is recommended to adopt a gradual approach to address the issues of substandard purification parameters and the problem of acid presence in the dry absorption towers, while gradually increasing the overall conversion rate to reduce emissions.
This problem is indeed very common; I’ve encountered it many times as well. When equipment ages, it relies entirely on human effort to keep it functioning. I’ve seen fans that were corroded by acid, as well as heat exchangers that had suffered from corrosion... When it comes to technical upgrades, everyone says they don’t have the money, so they just keep operating the equipment as it is. This often leads to extreme fatigue among factory managers, engineering technicians, and equipment maintenance staff. Often, the equipment gets damaged, and people’s health is also ruined.
Discuss the planning approach for building the new sulfuric acid plant
A factory needs to have a technical expert who can oversee the technical aspects, so as to avoid taking detours and wasting money.
These past few years, the sulfur smell has been awful, like dog shit; continuous investment simply doesn’t guarantee any improvement
My opinion, just to provoke discussion: stop using the dry method for acid production and switch to the wet method! No matter what acidity or corrosion, it’s no problem for wet processing.
The wet process for acid production also faces corrosion issues: lol
Say the spear is good when selling it, and say the shield is good when selling it?