International leader in the production of aromatic hydrocarbons by ebullated bed hydrogenation of coal tar

On June 13, Shaanxi Petroleum and Chemical Industry Federation organized a scientific and technological achievement appraisal meeting in Yulin on the "development and industrial application of complete sets of technology for producing aromatics from coal tar based on ebullated bed hydrogenation" in an online + offline manner
.
The appraisal committee headed by Academician Xu Chunming of China University of Petroleum (Beijing) unanimously believed that this technology broke the monopoly of ebullated bed hydrogenation technology abroad, and the medium and low temperature coal tar hydrogenation technology based on ebullated bed technology to produce aromatics is at the international leading level
.

The achievement was jointly developed by Shaanxi Jingyi Chemical Co.
, Ltd.
, Sinopec Dalian Petrochemical Research Institute, Sinopec Guangzhou Engineering Company, and Shaanxi Yulin Energy Group Co.
, Ltd.
It is a laboratory test, pilot test and 50,000 tons/year heavy oil fluidized bed On the basis of the hydrogenation industrialization test, an industrial demonstration has been completed, and a complete set of coal tar-to-aromatics technology with completely independent intellectual property rights has been successfully developed
.

Li Bin, deputy general manager of Jingyi Chemical Company, introduced that this technology fully utilizes the characteristics of high latent aromatics content of coal-based naphtha, and integrates fixed bed hydrocracking, continuous reforming, and aromatics extraction processes on the basis of fluidized bed hydrogenation.
The combined process is the world's first, forming a coal tar ebullated bed hydrogenation technology with high throughput, high liquid yield and high naphtha yield
.
The main key technologies include coal tar pretreatment and purification, full fraction coal tar ebullated bed hydrogenation, fixed bed coal tar hydrorefining and hydrocracking, coal-based naphtha ultra-low pressure continuous reforming and extraction technology
.
The innovatively developed low-energy-consumption and environment-friendly multi-effect pretreatment process for coal tar realizes low-energy-consumption purification pretreatment of medium and low temperature coal tar without adding chemicals.
Water content <0.
5%
.

In July 2020, the world's first 500,000-ton/year coal tar deep processing poly-generation comprehensive utilization project was completed and put into operation in Shaanxi Jingyi Chemical Company, a subsidiary of Shaanxi Yulin Energy Group, and opened up the whole process
.
The unit uses full-cut medium and low temperature coal tar as raw material to produce aromatics, light oil and other products, and realizes the first industrial application of domestic fluidized bed hydrogenation technology in the field of coal tar deep processing, making coal tar change from traditional fuel to high value-added aromatics.
Product transformation promotes the high-end and diversified development of the coal chemical industry
.

"After the device was put into operation, we carried out a number of scientific and technological breakthroughs, made bold innovations in anti-coking, anti-chlorine corrosion, pretreatment, etc.
, solved some 'neck stuck' problems, and realized the safe, stable and efficient operation of the device
.
" Director of Jingyi Chemical Company Chang Changyi said
.

The results of the 72-hour assessment and calibration by experts show that the liquid yield of coal tar hydrogenation of the device is 91.
65%, the yield of aromatic products is 71.
26%, the overall hydrogen consumption per ton of oil to aromatics from coal tar is 642.
65Nm³, and the energy conversion efficiency is 82.
29%
.

In 2021, Jingyi Chemical Company will process 340,000 tons of coal tar and 70,000 tons of wax oil.
The total output of its main products, light diesel, liquefied gas, benzene and xylene, will reach 280,000 tons, 8,000 tons, 36,000 tons and 239,000 tons respectively.
ton, the device realizes safe, stable, long, full and excellent operation
.

The relevant persons in charge of Yulin Science and Technology Bureau and Yulin Energy Group Company attended the appraisal meeting
.
In addition to the main venue in Yulin, there are branch venues in Beijing, Dalian, Guangzhou and other places
.