New technology for alcoholysis of urea to dimethyl carbonate
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Has the new technology of producing dimethyl carbonate through alcoholysis of urea been successful in pilot testing? Is there industrialization?
Chinese style has been successful, but it probably hasn’t been industrialized yet.
In my impression, China has just passed the pilot test, while foreign countries have successfully industrialized.
Shanxi Coal Institute has already started pilot testing, but industrialization is not an easy task.
There are pilot tests for the urea alcoholysis method, but there are still some problems, mainly caused by local overheating of the reactor. Part of the urea decomposes and produces CO2, which makes the product impure. In addition, CO2 and the generated ammonia generate (NH3) 2CO3, which causes pipeline obstruction and has a great impact on the equipment. I think the urea alcoholysis method cannot be considered a success so far, at least in China, and there is still a long way to go. The situation abroad is not clear, so experts are willing to give you advice. in 2009.
5# china1223 The information you provided is very new. Do you do work in this area? Can I ask you again?
Does anyone have information on pilot testing, installation, and working conditions? Thanks! ~~
The alcoholysis of urea to synthesize dimethyl carbonate conforms to the principle of atomic economics NH2CONH2+2CH3OH=CH3OCOOCH3+2NH3 2NH3+CO2=NH2CONH2+H2O. From the above equation, we can see how tempting it is. If successful, DMC will have obvious cost advantages. Yang Sheng’s phone number is 15135617409, QQ562175246, win-win situation
The decomposition of urea requires water for the reverse reaction to decompose, so why would it cause kerosene? Where is the water?
The decomposition of urea requires water for the reverse reaction to decompose, so why would it cause kerosene? Where is the water?
Generally, industrial urea products contain about 0.2~0.5% moisture and nearly 1% biuret. System side reactions cannot be ignored when the temperature is relatively high.
Side reactions will also produce CO2, which reacts with urea. If the temperature is lower than 60 degrees, the equipment pipelines will be seriously blocked, but these problems have been solved.