Baling Petrochemical breaks the bottleneck of oximation equipment expansion 　　

Recently, Baling Petrochemical’s caprolactam unit oximation unit shut down one imported unit, which still ensures that the production load reaches the operating level of the previous three units, and completes the technical calibration for high-load operation
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This move shows that a single domestic ammoximation process unit has achieved a technological breakthrough in production capacity

Baling Petrochemical’s caprolactam division oximation unit originally had three production lines, one of which used the imported hydroxamid oximation process, with an annual production capacity of 50,000 tons, and the other two production lines used self-developed ammoximation technology
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The imported device has been in operation for more than 20 years.

The shutdown of a set of equipment will face the "examination questions" of filling the gap in production capacity
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Moreover, the ammoximation process runs under high load conditions, and there are bottlenecks such as poor heat exchange efficiency of the reactor, high pressure difference in the membrane system, insufficient recovery system capacity, large discharge of wastewater, and high pollutant content

The Ministry decided to give full play to the role of technological innovation and set up a project research team to conduct technical research on the ammoximation process device without affecting normal safe production
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The research team started by optimizing the operation mode of the device, and implemented technical transformations on the internal components of the reactor of the device to achieve a qualitative breakthrough in the reaction capacity of the reactor; through optimized cleaning, the heat exchange capacity of the reactor during production in the summer high temperature season was improved; according to As the temperature changes, the reactors of the two units are subjected to staggered production to meet the high-yield requirements
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A series of process optimization measures have increased the unit's single-pot operating load by more than 13% year-on-year, with a maximum increase of 32.

After increasing the load capacity of the single tank of the device, the research team solved the problem of increased waste water caused by the increase in production capacity
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After repeated exploration and debugging, the amount of waste water produced per ton of raw material in the ammoximation process was reduced to the theoretical design value, which eliminated another "blocker" for the high-load operation of the device