Haohua Aerospace: Strong and weak items, make up for shortcomings and improve the stable operation days of the synthetic furnace

In caustic soda production, synthetic furnace lamp head salt is a big problem
that plagues safe and stable operation.
Haohua Yuhang Chemical Co.
, Ltd.
actively carried out internal benchmarking, engineering and technical personnel strengthened technical exchanges, classified and sorted out the operation indicators, found differences, investigated the reasons, and jointly carried out the strength and weakness of the poor process indicators and made up for the shortcomings, thereby improving the stable operation days of the synthesis furnace and reducing the safety risk
.

Haohua Aerospace production equipment is divided into 200,000 tons of ion membrane caustic soda, 200,000 polyvinyl chloride (referred to as phase I), 240,000 tons of ion membrane caustic soda, and 200,000 tons of polyvinyl chloride (referred to as phase II).

After the first phase of the transformation in 2021, the salt contained in hydrogen and the salt formation of the lamp head of the synthetic furnace have been effectively solved, from a cycle of 25 days before the transformation to more than 50 days after the transformation, which greatly reduces the operation intensity of employees and reduces the probability of
problems.

In the face of achievements, Haohua aerospace technicians did not stop at progress, but continued to improve and strive for excellence
.
They did not let go of the details that the second phase of the synthesis furnace was 4 to 5 days shorter than the first phase of operation, continued to find the equipment and process reasons, compared with each other, and finally confirmed that the second phase hydrogen washing effect was worse
than the first phase.
Taking advantage of the maintenance opportunity in 2022, add a blister layer to the second phase hydrogen scrubber and continue to optimize the salt content index
in hydrogen.
After the transformation, the operation of the second phase of the synthesis furnace has reached 55 to 60 days, and the safety risk has been greatly reduced
.