Zhongke Refinery ranked first in the competition for continuous reforming unit compliance

Since the beginning of this year, the continuous reforming unit of Zhongke Refinery has established a research team of party members to improve the unit index to scientifically analyze the current status and bottlenecks of the unit’s operation under ultra-low load, and on the basis of ensuring the safe and stable operation of the unit, it has carried out in-depth optimization of its energy consumption.
Excavate space for efficiency gains
.
By formulating a series of reasonable energy-saving and efficiency-creating technical solutions, the consumption of water, electricity and steam has been effectively reduced.
As of the end of June, the comprehensive score of the device ranked first in the competition of similar devices in the headquarters
.

The research team has dug deep into its potential and insisted on making efforts to "reduce costs and increase efficiency"
.
They took advantage of the low-load operation of the unit to turn the disadvantage into an advantage.
On the basis of ensuring that the contents of various impurities in the reforming feed were qualified, they strengthened the management of large power-consuming units in the pre-hydrogenation reaction system, and stopped the operation of supplementary hydrogen compressors.
Hydrogen is converted to hydrogen production by reforming; the process professionals and team leaders found out in the actual operation that only 50 cubic meters per hour of non-purified air can meet the cooling needs of the regeneration air, which provides conditions for the shutdown of the regeneration air-cooling fan , the two initiatives can save 90 kWh per hour
.

In addition, they reduced the operating pressure of the low-pressure steam expansion vessel by adding a low-pressure condensate pump, which not only solved the "water hammer" problem of the on-site pipeline and the problem of the pipe network of the external delivery system, but also increased the production of low-pressure steam by 4 tons/hour, which can increase the production of low-pressure steam by 33840 per year.
ton, the effect is considerable
.

On the basis of ensuring safe and environmentally friendly operation, the operators in the reforming area put the theme of "fine operation, energy saving and consumption reduction" throughout their daily work, strictly control the process parameters and indicators, and optimize the operation of the plant
.
The heating furnace is a "large energy consumer".
In order to improve the thermal efficiency of the heating furnace, professional and technical personnel have increased the special protection of the heating furnace, strictly controlled the operating parameters of the heating furnace, and carefully controlled the "three doors and one board" to reduce the excess air coefficient.
The furnace operation was optimized, and the furnace thermal efficiency was increased from 92% of the design to 93.
3%
.
At the same time, in order to save power costs under low-load operation, professional technicians scientifically control key parameters such as the pressure, reflux ratio, and bottom temperature of each tower, finely optimize and adjust the operation of each tower, save 0.
6 tons/hour of fuel gas consumption, and reduce high-pressure steam.
The dosage is 10 tons/hour
.

In order to improve the economic benefits of the device, they made a fuss about improving the yield of reformed oil and octane number.
The research team worked overtime to collect device data, comprehensively combed various energy consumption, repeatedly compared, and formulated a series of technical measures to optimize operations
.
According to the non-aromatic hydrocarbon content of mixed xylene, they reduce the yield of hydrogen production and improve the yield of reforming liquid; according to the production balance, the vapor pressure of the reformed oil is operated according to the card edge, which reduces the sending of unstable liquid hydrocarbons and improves the reforming oil.
Yield; according to the mixed xylene product, the aromatics conversion rate is appropriately increased, the octane number of the reformed oil is increased, and the product competitiveness is enhanced
.