Optimized operation plan for production facilities

Catalytic cracking unit: produces more 93# gasoline, improving economic efficiency.

Hydrocracking unit: Produces large amounts of intermediate distillates, such as diesel

Continuous reforming unit: There are two options – production of high-octane gasoline or aromatic compounds; more production is carried out in the area where the market demand is higher, with the production ratio adjusted accordingly.

At the current stage, due to the high price of propylene, which reaches 7,000 yuan – 2.67 times that of crude oil – gasoline prices are also high and sales are good, while diesel sales are difficult and its price is lower； Our company’s DCC unit is now operating under a gas-production scheme: it increases the depth of reaction, uses specialized DCC catalysts, and incorporates additives to boost propylene production, resulting in more propylene, liquefied gas, and gasoline while producing less diesel, thereby improving economic efficiency. Additionally, the prices of MTBE and ethylbenzene are currently very high, resulting in good profits; all production facilities are operating at full capacity ； Currently, the prices of styrene and nonene are rising gradually, so we are planning to set up facilities for producing styrene and nonene. This post was last edited by jinzi1973 on 2009-2-14 15:33.]

Device name: Diesel hydrogenation unit. Production optimization plan: Adjust parameters and optimize operations to increase diesel production, save energy and reduce emissions, as well as lower energy consumption!

At the atmospheric and vacuum distillation unit: asphalt is produced directly from residue, thereby reducing the amount of residue. In the catalytic cracking unit: more gasoline is produced, which reduces the yield of liquefied gas

Hydrocracking unit: produces more high-quality tail oil and reduces hydrogen consumption.

1. Carry out joint optimization of atmospheric and vacuum distillation, delayed coking, hydrocracking, and catalytic cracking units. In accordance with the principles of making the feedstock for delayed coking units heavier, the feedstock for catalytic cracking units lighter, and maximizing the load on hydrocracking units, the operation of each unit is optimized to maximize the yield of light oil and the overall product yield.

Optimize the hydrogen system balance. Reasonably arrange the processing load of units such as catalytic reforming, diesel hydrogenation, catalytic gasoline hydrodesulfurization, 40,000 standard cubic meters per hour hydrogen production, and catalytic dry gas hydrogen enrichment; optimize the ratio of natural gas to mixed dry gas in the feed gas of the 40,000 standard cubic meters per hour hydrogen production unit, to ensure a balance between hydrogen production and consumption.

To address the insufficient capacity for secondary diesel refining, catalytic cracking units were used to process heavy diesel as feedstock for hydrocracking units, thereby improving diesel quality, increasing diesel production, reducing the output of No. 3 solvent oil, and enhancing economic efficiency.

In line with the demand for Beijing IV gasoline and the requirements to reduce costs and improve efficiency, the startup and shutdown times of the benzene extraction unit and the catalytic hydrogenation desulfurization unit are arranged reasonably.

Improve the metering conditions of the device. Increase the number of meters in a planned and targeted manner to provide a solid foundation for device optimization.

Delayed coking units use fluidizers to reduce coke yield and increase the yield of liquid products.

Put the flare gas desulfurization facility into operation as soon as possible to reduce system corrosion, increase the recovery of flare gas, and lower processing losses.

Gas membrane separation technology is applied to recover propylene from polypropylene off-gases, as well as hydrogen from hydrogen-containing gases such as the light gases from hydrocracking units and the heavy gases from diesel hydrogenation units.

Put into use the comprehensive unit yard and the oil and gas recovery facilities at the Qianmi Bridge fuel depot to reduce loading losses.

Conduct research and technical exchanges on similar types of additives, strengthen comparison and selection, and improve the effectiveness of chemical additives.

Monitor the analysis data from the plant’s distillation outlet in a timely manner, develop strict oil blending plans to reduce excess quality, and lower the amount of additives used.

Currently, the prices of propylene and gasoline are high; catalytic units produce more gasoline, liquefied gas, and propylene, while producing less diesel.

Continuous reforming unit: 1. All external wastewater is recycled； ⒉Discontinue some air cooling and water cooling at the appropriate time ； ⒊Discontinue some ammonia compressors at the appropriate time ； ⒋Adjust the booster load in a timely manner ； ⒌Waste heat boiler ； ⒍Air preheater ； ⒎Shut down the isomerization unit ； Save energy and reduce emissions! This post was last edited by Zhongyuanren on 2009-2-15 11:57.]