Anticoagulant
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Our plant’s atmospheric and vacuum distillation unit uses antifreeze agents in the production of diesel, which have a certain effect on the cold filter point and freezing point of the diesel. Please discuss the requirements and effects of using antifreeze agents in your plants, as well as the manufacturers and models available. This post was last edited by zxh6267 on 2009-1-19 15:29.]
The amount of antifreeze used in our company is 600 ppm, which reduces the cold filter plugging point of diesel by 5–10 degrees. KeRun Fine Chemical Factory, a manufacturer of antifreeze agents – high-performance diesel antifreeze DKJ-11
I’ve learned a lot of knowledge; happy New Year.
Is it really that effective? Does it apply to straight-run diesel at 600 ppm, or to finished diesel? We’ve conducted experiments for a long time yet haven’t found a demulsifier with such good effects
Clariant’s antifreeze agents work well! Increasing the dosage to 500–800 ppm can yield good results, but it also depends on the actual circumstances, such as the blending ratios of diesel fuels like regular No. 2, regular No. 3, and hydrogenated diesel! This post was last edited by Lianyou Sanji on 2008-7-24 at 14:21.]
I have been involved in research on diesel pour point depressants. For diesel with a high wax content, no pour point depressant available domestically or internationally is capable of lowering the cold flow point; however, it is easy to reduce the pour point – generally, an addition of 200 ppm is sufficient to lower it by more than 10 degrees.
Agree with what was said on floor 6. High wax content affects the cold filter plugging point of diesel; therefore, pour point depressants are more sensitive to secondary processed products such as catalyzed diesel, but less sensitive to some conventional diesel fuels. Pay attention to the proper use to avoid wasting anticoagulants.
Lowering the pour point is easy; ordinary depressants can achieve this. The key issue is the cold filter point. Some depressants can lower the pour point by more than 10 degrees, but they have no effect on the cold filter point at all. Depressants also have certain requirements regarding the distillation range of diesel.
Agree with the views from the 6th and 8th floors. The sensitivity of antifreeze agents is highly sensitive to the composition of diesel; they do not have a broad spectrum of activity, so multiple tests should be conducted during screening. Many other antifreeze agents that claim to be able to lower the freezing point actually fail to achieve the desired effect; after the temperature drops by a few degrees for a short period of time, the freezing point rises again. So. Today, large refineries no longer rely on antifreeze agents to adjust the quality of diesel.