Sun Qingxian: "The furnace king" is refined in this way

Sun Qingxian, a skilled expert of China Petroleum who has participated in the work for more than 30 years and a senior technician of the ethylene joint workshop of the petrochemical plant of Lanzhou Petrochemical Company, has successively won the titles of National Model Worker, "100 Outstanding Craftsmen" of central enterprises, National Technical Master, Longyuan Artisan, etc.
, and also enjoys special government allowances
from the State Council.
Because he is good at solving the difficult and complicated diseases of the cracking furnace, Sun Qingxian is called the "furnace king"
by his peers.

Master the core operating technology

In 1986, after graduating from technical school, Sun Qingxian entered the petrochemical plant of Lanzhou Petrochemical Company, the cradle of New China's ethylene industry, and formed an indissoluble bond
with ethylene production.
When he first started his studies, Sun Qing, a cracking furnace more than 40 meters high, climbed more than a dozen times a day, and he studied voraciously, writing hundreds of thousands of words of study notes
.

For a period of time, the ethylene and propylene product yield of the ethylene plant of the plant was low, and the operating cycle of the cracking furnace was far lower than the design value of 20 days, which affected the efficiency of the plant
.
This made Sun Qingxian worried
.

The faucet of the chemical plant is the ethylene plant, and the faucet of the ethylene plant is the cracking furnace, each cracking furnace has 16 burners and 72 furnace tubes
.
Uneven feeding of the furnace tube, poor adjustment of the burner leading to flame fluttering of the furnace tube and other factors will affect the temperature control
of the pyrolysis furnace.
Poor pyrolysis temperature control is the root cause
of low product yield and short operating cycle of the plant.
It is very difficult
to keep the outlet temperature of each furnace tube consistent.

"I don't believe this problem can't be
solved.
" Sun Qing struggled
to come up first.
Every day, he braved the high temperature of the furnace wall of 70 °C, measured the temperature of each furnace tube with a thermometer gun, and analyzed the data against the pyrolysis gas data
.
He also kept staring at the furnace tube, observing the color of the furnace tube, the hot furnace tube emitted a dazzling light, staring for a while, his eyes would burst into tears, and he would be swollen for a long time
.

After a month, he finally controlled the temperature difference between the tubes of several cracking furnaces to the lateral temperature of the
furnace tubes.
Not only that, he also repeatedly deliberated in the operation, and summarized and groped the three-step control method
of the reaction temperature of the pyrolysis furnace "one check the feed deviation, two adjust the burner flame, and three observe the color of the furnace tube".
Using this working method, the operating cycle of the cracking furnace reached the design value of 20 days, the yield of "diene" increased by 1 percentage point, and the annual economic benefit increased by 5.
4 million yuan
.

Overcome production technical problems

At the beginning of the commissioning of Lanzhou Petrochemical's 240,000 tons/year ethylene plant, due to the high viscosity of the cracking heavy oil of the primary distillation column and the difficulty of controlling the liquid level of the tower, the load of the oil washing tower has never reached the design capacity, which has become a bottleneck
restricting the production of the whole set of equipment.
This situation has not only not been encountered by Sun Qingxian's Lanzhou Petrochemical Company's petrochemical plant, but there is no successful experience in the whole country to learn from
.
How to solve this puzzle? Sun Qing began to study
first.

One day, while flipping through industry information at home and abroad, he was attracted by a message that reduced the concentration of the oil washing tower to ensure stable operation
.
Can we start to reduce the concentration of the oil washing tower? Inspired by this message, he was suddenly enlightened
.
After a series of analysis and comparison and exploration practice, he put forward suggestions
to inject quenched cold water into the pyrolysis oil to improve the operation of the oil washing tower.
After the adoption and implementation of the recommendation, the temperature at the top of the oil washing tower was reduced from 120 °C to 104 °C, the viscosity of heavy oil was also reduced, and various technical and economic indicators reached the design value in a short time, laying a foundation
for the device to fully meet the standards.

For more than 30 years, Sun Qing has solved more than 30 key technical problems of ethylene plants by participating in organizational technical research, obtained more than 20 technical achievements influenced by the industry, and 15 QC achievements have been commended by the state, Gansu Province and PetroChina, creating a cumulative benefit of more than
80 million yuan.

Gan is a ladder to teach by example

"As the saying goes, a person covered in iron cannot hit a few nails
.
No matter how capable a person is, it is not as good as teaching everyone to do it and leading everyone to do it
.
Sun Qing said this and did so
.

Relying on Sun Qingxian's National Skills Master Studio, Sun Qingxian organizes skills training and technical exchanges, and through teaching by word and deed, most of the studio team members have grown into production technology backbones
.
Among his apprentices, more than 20 have obtained professional qualifications as technicians and senior technicians, 1 has become an enterprise-level skill expert, 3 have won the title of technical pacesetter of Gansu Province, 1 has won the title of technical expert of Gansu Province twice, and 6 have won the title of technical expert of China National Petroleum Group
.

Sun Qing first combined what he had learned, worked and theorized, compiled nearly 400,000 words of technical materials such as the "Operation Method of Cracking Furnace for Ethylene Plant", and guided the start-up and operation
of Lanzhou Petrochemical's 240,000 tons of ethylene per year.
Because of its simplicity and ease, this operation method has played a great role in the actual driving operation, and has been affirmed by experts at all levels, and has been popularized and applied
in many sets of ethylene plants in China.