Issue 36/2015 - Coal-to-olefin re-added technology pathway

On September 14, the 10,000-ton industrialization test project of methanol to butylene co-production propylene technology (CMTX) passed the appraisal
of scientific and technological achievements organized by the China Petroleum and Chemical Industry Federation.
The expert group determined that the industrialization technology has independent intellectual property rights, reasonable technology, advanced technical indicators, and has reached the international advanced level
as a whole.
At this point, China's methanol-to-olefin family has added a new member, which can explore a new path
for enriching the industrial chain and enhancing industrial added value.

Methanol to butylene co-production propylene technology, innovative development of methanol to butene co-production propylene fluidized bed process and special catalyst, and catalyst low-temperature regeneration process; The developed methanol to butene co-production propylene fluidized bed process has the characteristics of high airspeed, low water-alcohol ratio, strong device processing capacity, low investment and low energy consumption.
The self-developed special catalyst has high selectivity, low coking rate, good hydrothermal stability, reasonable particle size distribution, good fluidization performance, high wear resistance and strong
adaptability.
The whole process and catalyst have good application prospects, and it is recommended to further deepen engineering research and development and accelerate the promotion of industrial application
.

It is understood that the existing coal-to-olefin technology will produce a small amount of C4 by-products
while obtaining propylene and ethylene.
If it is not recycled, it will cause waste of resources; However, if it is recycled, hundreds of millions of yuan will have to be invested in the construction of C4 reuse units, and in the case of low oil prices, the new investment expenditure will significantly weaken the profitability
of the project.

In order to solve the above problems and obtain butylene and butadiene products with broad application prospects, Shaanxi Coal Chemical Group, together with Shanghai Beike and Shanghai Hetu, jointly developed CMTX technology with butylene and propylene as the main products, and after several years of research and small-scale, pilot and conditional tests, the 10,000-ton industrial test
began in July 2015.
On July 24~27, the 10,000-ton test plant passed the 72-hour on-site assessment and calibration organized by the China Petrochemical Federation
.

(Medium)