The treatment process of ammonia-containing methanol has been patented

Recently, "a process for treating ammonia methanol in a low-temperature methanol washing system" declared by the technical team of the methanol center of Pujie Energy Chemical Company has been authorized
by the State Intellectual Property Office.

It is reported that the conversion gas entering the low-temperature methanol washing from the center of the conversion device contains a trace amount of ammonia, and with the recycling of methanol in the system, the ammonia in the methanol gradually accumulates and concentrates
.
When it reaches a certain level, under the existing temperature and pressure, the concentrated ammonia reacts with acid gas to generate carbon ammonia crystals, blocking pipelines and equipment, and affecting the safe and stable operation
of production.

Previously, the center used methods such as hot washing of acid gas pipelines, anti-carbon ammonia crystallization hand valves for acid gas pipelines, and local replacement of methanol, but all of them had different degrees of drawbacks
.
In order to solve this problem, the center has developed a process for treating ammonia methanol in low-temperature methanol washing system, when the acid gas pipeline has carbon ammonia crystallization phenomenon, from the place where the ammonia content in the low-temperature methanol washing system methanol is high, high concentration of hydrogen sulfide, ammonia methanol is brought into the reactor of the ammonia deamination device, after a series of reactions and treatment, the ammonia in the methanol is effectively removed
.

After the device is put into use, it not only solves the bottleneck of acid gas carbon ammonia crystallization in the low-temperature methanol washing process, but also ensures the long-term stable operation of the low-temperature methanol washing system.
Ammonia-rich methanol can also be deammonized and recycled again, by-product ammonium sulfate or ammonia
.
According to statistics, the low-temperature methanol washing system can save at least 100 tons of methanol per month, and can increase the annual income by about 4 million yuan
.