The Namhung Youth Chemical Complex increases fertilizer production by pushing ahead with the technical upgrading of overall production processes.
It remodelled the gas generating process, washing towers, heating process and other production processes to meet new technical indices and boosted the output of semiwater gas, a basic material for fertilizer production.
In particular, it introduced a technical innovation plan into the supply of castings needed for overhaul, thereby shortening the casting time from ten days to two hours while reducing the consumption of materials by a twentieth.
In the course of this, it built up the capacity for increasing fertilizer production by recycling the waste gas from the ammonia synthesizing process and applied the heated gas from generator to the steam production process so as to save hundreds of tons of fuel on a daily average.
It also added a new conveyor belt to the rod coal drying process to increase productivity 1.2 times while saving manpower and electricity.
According to Pak Song Hak, a staffer of the technical section, the steam production process established by the own effort of the complex is a recyclable energy-saving one.
In the past, it largely depended on imported fuel or nearby thermal power station to get steam for fertilizer production.
It is said that the new steam production process consisting of three large-capacity circulating fluidized bed boilers, a fuel depot and dust-collecting system ensures over 98 percent combustion efficiency by using industrial waste and waste gas from production process as fuel and turns out well over a hundred tons of steam per hour.
“By establishing this process our complex has been producing high-pressure steam for fertilizer production with our own efforts, and turned hundreds of thousands of tons of industrial waste into highly-efficient fuel,” said Hong Chol Nam, deputy chief engineer in charge of production.
Besides, it sends much more raw materials to the gas generating process by making the most and effective use of waste gas from the generator in the drying of rod coal, and other processes also register good results in production, especially gas purification and ammonia and urea fertilizer production processes.