Dryer

The dryer is made of cast iron and has hollow cylinder at both ends. It is composed of cylinder body and cylinder head at both ends. The outer diameter is more than 1000 ~ 3000mm. During the operation, steam is sent to dry and heat the paper. The cast iron dryer for paper machines is a key component for paper drying - type I pressure vessels. The number of cast iron dryers accounts for about 2/3 of the total number of pressure vessels in the paper industry. Most of the materials for making dryers are HT200 and HT250. In the manufacture of quality requirements and no penetration and large blisters, in order to increase the smoothness of the paper, the outer surface of the dryer polished inner surface turning light, keep the cylinder wall thickness is consistent, in order to ensure safety, balance and heat evenly throughout the dryer. The dryer is used to dry the paper sheets in the water, surface finishing. Component The main part includes: heat pump dryer and steam system, condensate recovery system, flash tank, pressure control system, pressure control system, flash tank, non condensable gas removal system, hot water pump, manual control program, warm - off paper - boot system. Drying principle of dryer The saturated steam passing through the steam joint condenses in the dryer and releases heat to raise the temperature of the dryer, thus heating the sheets that are coated on the surface of the roll shell. Heat is transferred to the paper in contact with the surface of the dryer.