Summary of operational experience in starting up dimethyl ether plants
Thread Content
Dear friends working with dimethyl ether, during the startup phase of the dimethyl ether vaporization tower, the feed rate and the amount of fuel supplied must be kept low in order to prevent the dimethyl ether synthesis system from experiencing overpressure. Only after a concentration gradient is established in the vaporization tower can the heating intensity and the feed rate be increased. Could some kind sir explain why the feed rate can only be increased after a concentration gradient is established? Please provide an explanation from a theoretical perspective. Thank you
Question, great, I want to know the answer too.
Guanghui also produces dimethyl ether, right? It was designed by the Second Research Institute; you can ask them about it
There are things that cannot be fully explained by theory. The initial load is certainly low, and it is only as the system stabilizes that the load is gradually increased; basically, it never operates at full load right from the start. Reaching full capacity takes some time.
The evaporation rate while driving is difficult to control; generally, operation is carried out at low load, with the load being increased gradually once stable operation is achieved.
The system pressure you mentioned should be controllable; does the self-regulating valve used to control the system pressure work properly?
The control valve will definitely function, but one cannot rely on releasing air to relieve pressure, as that results in high energy consumption
The dimethyl ether facility of our company is still under construction. . . . I would like to ask the original poster: feed rate — nail alcohol? Fuel supply amount, heating amount — is oil used as a heat source? Concentration gradient — isn’t it all methanol in the vaporization tower? Is it a temperature gradient?
Of course, for feeding the vaporization tower, we use heat transfer oil for heating. Are you still working on this project? Isn’t there a bit of an oversupply? We’ve been in operation for over 3 years now
Of course, for feeding the vaporization tower, we use heat transfer oil for heating. Are you still working on this project? Isn’t there a bit of an oversupply? We’ve been in operation for over 3 years now
Reply to 10# Bubble Gum: I’ve been driving for three years now, so I have a lot of experience. Please tell me about driving from scratch