The issue of treating the residue generated from coal-based dimethyl carbonate production.
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I have a question for everyone. My company currently uses coal to produce dimethyl carbonate, and as a result, waste residue is generated. The main components of this residue are sodium oxalate, dimethyl oxalate, dimethyl carbonate, etc. Given the large amount of this residue, we don’t know how to deal with it. Using pure water for dissolution requires too much water. Do anyone have any good suggestions? Perhaps we could utilize its calorific value, or find ways to sell it as a type of minor waste. Thank you
See if it’s possible to purify and separate it through crystallization to produce sodium oxalate and dimethyl oxalate products, which can be used as reducing agents, solvents, finishing agents, and so on; there should be quite a few applications for them.
At present, there is only an experimental unit; a new unit is under construction. The filter residue from the experimental unit is sent to boilers for co-firing, but the output of the new unit is too large to allow for such co-firing
The leader wants to get rid of it directly, without going through any further processing :(
At present, there is only an experimental unit; a new unit is under construction. The filter residue from the experimental unit is sent to boilers for co-firing, but the output of the new unit is too large to allow for such co-firing
The leader wants to get rid of it directly, without further processing: ‘( The filter residues from the experimental setup were mixed in with other materials for burning; the amount is small. There’s too much of this material to use up, and since the filter residues are solid, in order to burn them, they first need to be converted into a liquid state. Right now, we don’t know how to deal with them
Do all dimethyl carbonate companies have them? Are there any pictures? What is the daily output? Besides calorific value, what else can be utilized?
There are no pictures of the filter residue for now; it’s similar to ash and soil. The annual production volume is 300,000 tons, and this is a by-product of coal-based ethylene glycol production; it is now manufactured as the main product. The amount of filter residue produced per hour is around 5 tons
If calculated based on 7,000 hours, the annual output of filter residues will be 35,000 tons, and it is estimated that a mountain of hazardous waste residue will have accumulated there as well. It is essential to find ways to address the issues of reduction and harmless treatment; otherwise, disposing of it as hazardous waste is likely to consume a large portion of the profits generated from producing ethylene glycol.