The capacity of Acron’s four urea units in Veliky Novgorod is now 1800 tpd, following an overhaul of four production units. These units were originally put on stream in 1969-1970. Investments in the project exceed RUB 500 million.
The upgrade comprised commissioning two 90 m3 high-pressure liquid ammonia centrifugal pumps, and assembling and commissioning two ?tlas Copco 18 000 Nm3/h centrifugal eight-stage carbon dioxide compressors. After replacing rotating equipment, the company improved the synthesis and distillation shop by installing a set of internal equipment in the synthesis columns, replacing the gas bubbler heat exchangers in three synthesis units and assembling gas ammonia separators. The company also replaced the carbamate decomposition unit at the first distillation stage to dramatically increase the efficiency of the synthesis and distillation units.
Acron put on stream its fifth urea unit with capacity of over 1000 tpd in 2012. The aggregate capacity of the five units will now reach close to 3000 tpd, and annual output will exceed a million tonnes.
Read the article online at: https://www.worldfertilizer.com/nitrogen/21062017/acron-increases-urea-output/