Unveiling the rankings and solving on-site problems-the long-term operation of Hubei Fertilizer and Shell Pulverized Coal Gasification Unit

As of August 31, Sinopec's Hubei Fertilizer Company Shell Pulverized Coal Gasification Plant long-term operation research list has been announced and completed the phased goal, eliminating the over-temperature of the gasifier annular space, the high-pressure plate heat exchanger of the air separation unit, and the purification device.
The "stuck neck" bottleneck blocked by the E2230 heat exchanger lays a solid foundation for the next step of production optimization
.

The company's coal gasification unit provides syngas as a raw material for downstream, and is the leader in increasing production load, making great contributions to tackling tough problems and creating benefits
.

Since 2020, the device has repeatedly encountered problems such as overtemperature in the annular space of the gasifier, affecting Changman's excellent production and becoming the focus of the company's attention

Shell pulverized coal gasification unit is technically difficult and challenging
.

After the annular space of the gasifier was over-temperature, the company invited experts from the headquarters to conduct consultations, conduct foreign exchanges and inspections, and learn about the production and operation of similar devices in the industry

During the minor repairs of the device in July, Li Yang learned from experience and lessons and formulated a thorough leak detection plan and targeted measures
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For the annular space of A3 and A5, heighten and lengthen to seal tightly, form a water seal with the water at the lower part, inflate the furnace chamber of the gasifier and control the pressure, and check the top cone of the annular space, the burner expansion joint and other parts

"After the implementation of the key problem, the effect is very good, and a large leak in the A5 annular space has also been pulled out
.

" Li Yang said happily

In view of the ice blockage of the high-pressure plate heat exchanger of the air separation unit and the blockage of the E2230 heat exchanger of the purification unit, the research team carried out brainstorming and traceability analysis, conducted desktop deductions, refined and improved the plan, and carried out reheat treatment and chemical cleaning respectively
.

After the device is started up, the temperature of the three annular spaces A3, A5, and A11 is basically stable, the temperature difference at the hot end of the air separation high-pressure plate heat exchanger is less than 5℃, and the pressure difference of the E2230 coiled tube heat exchanger is less than 0.
1 MPa, and the device is controllable
.

At present, the device is sprinting the goal of high-load production, and the average daily output of downstream liquid ammonia products continues to rise

　　Now, Li Yang has plunged into a new round of research
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He focused on optimizing the use of raw coal, blocking the slag of the gasifier, and released the "timetable" and "road map", striving to increase the gas production rate and stability rate of the unit, and achieve the 180-day operation of the coal gasification unit, breaking the record of Class A continuous transportation.