Is it more cost-effective to desulfurize soda ash or liquid alkali?
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Which one is more economical: heating and dissolving the soda ash with steam in a dissolving tank and then putting it into a circulating tank for desulfurization, or using 30% liquid alkali for desulfurization? ? The premise is that soda ash is 500 yuan more expensive than liquid soda ash per ton, and the steam required for dissolution is 200 yuan per ton.
Soda ash desulfurization, is this effective? We use caustic soda!
Usually NaOH is used. .
Reply 1# The soda ash mentioned by the moderator of I Love Chemical Technology should be solid NaOH (solid alkali). Generally, factories directly use 30% NaOH solution for desulfurization. Economic calculation requires other data, and the tail suction tower is not always running, right?
It is best if you have some calculated theoretical data to analyze and compare.
The moderator did not explain the content of soda ash? Only the content of liquid alkali is mentioned. If only calculated theoretically, if the content of soda ash (Na2CO3) is 96% and the content of liquid alkali (NaOH) is 30%, 2,000 yuan/T, it is of course economical to use soda ash.
There should be solid caustic soda, but liquid caustic soda is probably more suitable. Solid caustic soda requires additional equipment and labor, and there are many unknown problems that will also increase costs.
The content of soda ash is 99%
You don't need steam to melt soda ash. Just stir it a little.
The prices of the two kinds of alkali vary greatly in different places. You should convert it to the price of the same weight of sodium. Liquid alkali needs a storage tank.； Soda ash requires a warehouse, manual preparation, and a dissolving device. Comparisons need to be made based on regional conditions.
Soda ash (Na2CO3) is 1,400 yuan/ton, 32% liquid alkali (NaOH) is 850 yuan/ton, and 99% flake soda ash is 3,450 yuan/ton. Of course, it is economical to use soda ash. Soda ash does not require steam to dissolve. Add water at room temperature to make a saturated solution.