The technical transformation of medium pressure steam pipe network has shown results

Recently, after the technical transformation project of medium pressure steam pipeline of Yanchang Petroleum Yulin Refinery was put into operation, it solved the problems of low medium pressure steam temperature and low pressure caused by low pressure steam turbine rotor scaling and high wheel chamber pressure in the medium pressure steam terminal steam turbine, which can save 35,000 tons
of steam per year.

The plant's continuous reformer is the end-of-life user of
medium-pressure steam in the entire plant.
Since the start of the plant, the steam inlet temperature and pressure of the continuous reforming turbine have not met the design requirements
.
During the operation of the steam turbine, the steam consumption is high, and the rear condensation system once runs at full load, which seriously restricts the increase of the processing load of the device
.
At the same time, the low temperature, low pressure and low quality of medium-pressure steam lead to a decrease
in the operating efficiency of the steam turbine.
The use of online injection agent cleaning to maintain the operation of the steam turbine is not only high cost, poor safety performance, but also difficult to treat the reagents after cleaning, which cannot fundamentally solve the problem
of turbine rotor scaling.

To this end, the plant decided to implement the technical transformation of the medium-pressure steam pipe network of the whole plant during the shutdown and overhaul of the plant, combined with the actual production of Yulian, and continuously optimized the pipeline design, and adopted different types of energy-saving, thermal insulation brackets and pipe supports inside and outside the device; All technical transformation pipelines use thermal insulation painting anti-corrosion treatment combined with special thermal insulation cotton to reduce steam energy loss and ensure the steam quality
of medium pressure steam terminal.