Zhang Yong: Control the precision of hair strands with your hands

Zhang Yong, chief technician of Hubei Chemical Fertilizer Company, has been dealing with machine repair fitters for 36 years since he joined the company in 1986. The dry fitter is hard, dirty and tire.

Solve the difficult problems of large equipment

Refining and chemical enterprise equipment is the foundatio.

In March 2014, Hubei Fertilizer's 200,000-ton/year syngas-to-ethylene glycol industrial demonstration plant was put into operatio.

He also solved the problems of short belt cycle and unstable oil pressure of 19 vacuum pumps, re-selected the sewage lifting pump of the nitric acid unit, and participated in more than 20 technical transformation projects such as the transformation of the dry gas seal of the carbon monoxide compressor, so that the operation cycle and load of the device increased year by yea.

Hubei Chemical Fertilizer Coal Gasification Unit provides raw syngas for production, which is the key to restricting the increase of unit loa.

After that, the coal gasification unit has the problems of high vibration value of the circulating gas compressor and leakage of the dry gas sea.

In 2018 and 2019, the coal gasification unit was awarded the "Best Gasification Operation Award" by Air Chemicals (China) for two consecutive year.

Uncover the "mystery" of imported cryopumps

Zhang Yong and his team focus on production and operation, and create benefits for the enterprise through independent maintenance, tool improvement, and technological transformatio.

The imported cryogenic liquid nitrogen pump of the coal gasification air separation unit needs to be returned to the factory for overhaul, and the cost is about 300,000 yuan each tim.

The inspection and maintenance of the intake and exhaust valves of the ethylene glycol reciprocating compressor is a tricky job, with heavy workload, valve weight, high difficulty in disassembly and assembly, time-consuming, labor-intensive and labor-intensiv.

Zhang Yong also led everyone to repair the old and recycle the waste, remove the usable parts, carefully match, grind, install and debug, assemble them into perfect spare parts, and renovate the bearing section and sealing end face of the spiral coal feeder of the coal gasification department, so as to save the purchase cost of spare parts every yea.

The transfer belt promotes the professional integration of electromechanical instruments

In 2018, Hubei Fertilizer's electromechanical instrument majors merged to establish an inspection and maintenance cente.

There are many difficulties in the inspection and maintenance of large unit.

　　In order to promote professional integration, Zhang Yong carried out inter-professional cross-training and paired with Chen Bo, an electrical technician, to improve the motor installation and debugging, fault analysis and judgment capabilities of electrical professional technicians in a targeted manne.