Transformation catalyst consumption index
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The consumption of conversion catalyst is an important parameter in the economic indicators of sulfuric acid production. In recent years, as environmental protection pressures have increased, the issue of catalyst consumption has gradually attracted the attention of industry professionals. In my opinion, the consumption of conversion catalysts depends mainly on the following two factors: 1. Purification criteria, especially those related to arsenic and fluorine ； 2. Environmental requirements: if the exhaust gas standards must be met, it is necessary to replace the catalyst in advance, which in turn requires an increase in the catalyst consumption quota. Our factory produces acid from smelting flue gas; previously, the purification process involved using concentrated acid for pickling, which resulted in poor purification quality, with catalyst consumption reaching as high as 0.5 kg per ton of acid. At present, the sulfuric acid purification process in our plant has been changed to a dilute acid sealing pickling method, and the purification parameters are gradually improving. The plant has set a catalyst consumption rate of 0.25 kg/t of acid. I don’t know what the consumption indicators are for acid production catalysts made from sulfur and pyrite This post was last edited by in the blink of an eye on 2007-11-12 21:32]
The sulfur-based acid production plant performs relatively well and is not affected by purification requirements; the main issues are gas entrainment and screening losses. Our company’s actual catalyst consumption is below 0.15 Kg/t. It refers to imported catalysts.
Our plant produces acid from copper smelting flue gas, using a dilute acid washing process along with two-stage electrostatic precipitators. The catalyst is replaced 25% per year; the actual amount of catalyst installed is 66 tons. The annual acid production capacity is 100,000 tons, and the catalyst consumption rate is 0.165 kg per ton of acid produced.
It seems that the catalyst consumption metrics of our plant still need further optimization, of course, this is on the basis of optimizing and upgrading the purification process as well as improving the purification performance indicators.
I don’t know how to calculate it; it doesn’t seem like there are that many
Our company’s figures are better; they are well below 90 grams per liter, actually at around 0.030 KG/T；
It was a typo; it should be around 0.015 Kg/t of acid.
It’s usually 0. 12~0. 15L/t acid
Catalyst consumption is mainly caused by unmet purification standards, such as excessive levels of arsenic and fluorine, with temperature control also being a contributing factor.
Yes, temperature control is also one of the factors
Will the activity of the sulfur dioxide oxidation catalyst decline, or is it merely the catalyst’s pulverization or entrainment that leads to a reduced reaction efficiency?