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Jilin Petrochemical prolongs the life of alcohol ether catalyst
Recently, the calcium carbide plant of Jilin Petrochemical Company has effectively extended the use cycle of silica gel and catalyst by improving the air freezing effect, and the product quality rate has increased from 98.
8% in the past to more than 99.
1%, which can create more than 1.
3 million yuan per year, so that the old and difficult problems that have plagued the alcohol ether device of the plant for many years have been completely solved
.
In 2002, after the alcohol ether plant introduced from the United States was put into operation, the freezing effect has been unsatisfactory, and the silica gel desiccant is very easy to break, which reduces the activity of the catalyst and affects the product quality
.
To this end, the plant proposed to install insulation at the outlet of the air cryocooler to reduce the loss of cold capacity and avoid the crushing of silica gel, while strictly controlling the regeneration and cooling time of silica gel, installing a filter at the inlet of the fan to ensure that the inside of the silica gel is clean, and controlling the temperature of the chilled water at 0 °C ~ 2 °C to ensure the air freezing effect
.
At the same time, the inlet temperature of the conversion tower is reduced from 430 °C to 425 °C, and the acid gas in the tower is blown to reduce its corrosion
of the catalyst.
(Li Meng)
