Yangtze's ethylene production continues to increase profitability with high quality

China Petrochemical News Network reported this year, Yangzi Petrochemical focused on fine management, strengthened the implementation of responsibilities, eliminated production "bottleneck", and maintained high-load and stable production of the ethylene complex, and achieved gratifying results
.

Overcome difficulties and eliminate production "bottleneck"

At 7:40 in the morning of July 28th, Zhang Yan, deputy director of the ethylene unit of the Yangzi Petrochemical Olefin Plant, and Sun Guangdao and Wang Wenchao, technicians of the compression area, came to the DCS console in the control room No.
1 compression position in advance to check the system operating process parameters, and then Go to the scene to compare and confirm the parameters
.

Previously, some heat exchangers in the compression system of the No.
1 ethylene plant were clogged, fouled, and insufficient in operating efficiency, which once became a "bottleneck" restricting the high-load production of ethylene
.

"Completing the task of eliminating shortages one day earlier can increase the ethylene production load one day sooner
.

"The compression system maintains high-load and stable operation, which helps to optimize the operation and optimization of the subsequent separation system
.

Make detailed ethylene performance indicators

　　Zhao Zhiyu, deputy director of the ethylene combined plant, has a good habit of going to the control room to check the data record report of the cracking furnace feed amount before participating in the production scheduling meeting, and record the input amount of various cracking materials the previous day in the portable small In the notebook, he recorded all the ingredients in the furnace, the distribution ratio of the ingredients, and the total amount of ingredients, and he knew everything in the notebook
.

　　As a raw material for ethylene cracking, liquefied gas has the characteristics of low cost and high ethylene yield.
For increasing ethylene production, liquefied gas is a high-quality cracking raw material
.

　　"Don't underestimate the daily production of nearly 10 tons of ethylene.
There are nearly 300 tons in a month, and close to 3,600 tons in a year.
This is a big benefit
.

　　According to statistics, from January to July, the input of liquefied gas (LPG) in the ethylene complex of Yangzi Petrochemical reached 225,700 tons, the average yield of ethylene reached 34.
88%, and the average yield of ethylene high value-added products reached 61.
55%.
Good
.

　　Anchor the target and continue to tackle tough problems and create benefits

　　"The thermal efficiency of the cracking furnace has been increased to over 94.
1%; the hourly volume of ultra-high pressure steam in the auxiliary boiler has been reduced by 2 tons year-on-year; the inlet acetylene volume of the No.
1 C2 hydrogenation reactor is controlled at 0.
65 tons per hour, and the reaction selectivity has increased by 60%.
, Increasing the production of ethylene by 0.
33 tons per hour;.
.
.
" Recently, the team of party members of the ethylene joint plant showed a "beautiful" report card
.
"Inventory" shows that since the beginning of this year, the ethylene complex has maintained a good momentum of "continuous efforts to create benefits"
.

　　Wang Binbin, secretary of the party branch of the ethylene joint plant, said that since this year, the party branch of the ethylene joint plant has continued to carry out efforts to attack and create benefits.
They have carried out special carrier activities such as party member responsibility area, party member demonstration post, party member "project leader" and other characteristic carrier activities to give full play to the party branch.
The role of party groups and party members in tackling tough problems and creating benefits
.

　　"Our team is undertaking 12 key tasks such as completing the annual output of 800,000 tons of ethylene and ensuring the stable operation of the No.
2 ethylene dilution steam system
.
Our goal is to complete the annual output of 800,000 tons of ethylene; to ensure the overhaul in 2022 Previously, the dilution steam system of the No.
2 ethylene plant was operating stably to reduce the amount of medium-pressure steam supplemented by the system.
.
.
" Xu Zidong, director of the ethylene unit Installed the party branch’s list of “Party Members’ Tackling Key Issues and Improving Efficiency Projects” and issued a military order to anchor this year’s new goals for tackling key problems and creating benefits
.

　　From January to July, the high value-added product yield of the ethylene combined plant was increased, and the energy consumption optimization party member team focused on improving the yield of high value-added products of the ethylene combined plant, reducing the energy consumption of the plant and reducing production costs, and continued to carry out technical research and development.
Tackling tough and creating effects, finding shortcomings, tackling difficulties, and solving problems
.

　　The smooth operation of ethylene, the party member team optimized and adjusted the operation of large units, reduced the amount of circulating water supplemented by the device
.
The yield of ethylene high value-added products increased.
Party members’ research team through technical research, optimized and adjusted the cold box and product tower of the ethylene separation system, lowered the tower top temperature, and reduced the loss of ethylene products in high-pressure methane by 1.
03 percentage points
.
Ethylene energy consumption optimization The party member team analyzed the energy consumption ratio of the ethylene unit to find out the problem of excessive energy consumption, "prescribe the right medicine", and took effective measures to increase the thermal efficiency of the cracking furnace to over 94.
1%, and the energy consumption of the ethylene unit was significantly reduced.
, Reducing 2 tons of ultra-high pressure steam input per hour year-on-year
.
(Tao Yan, Zhou Ningsheng)