Paper Mill Industry
As it is known all that steam is the main energy consumption in paper industry, hence, steam boiler is mostly used for paper making plants.High temperature steam is produced by burning coal or other fuels through energy conversion, then steam will be transported to each workshop to achieve steaming,boiling, drying and shaping purpose.
The chemicals which is used in the paper mill is dissolved by heating such as sodium hydroxide, sodium sulfate, sodium carbonate, etc., and it is necessary to heat them with steam. In addition, processing and forming paper, black pulp also need steam.
Boilers are the heart of the paper mill production, it’s the main driving force of every paper mill ,which is indispensable. In the paper plant production process, there will be many waste such as bark, waste wood and black liquor and other waste, the use of biomass fired boiler and gas fired boiler are the most popular methods currently ,it can dispose the waste and make plenty of steam for production, improving the economic benefits of the paper mill.
At present, steam applied in paper-making enterprises is mostly produced by coal fired boiler as the steam source, so as to improve the energy efficiency of the enterprise.However, with the State Environmental Protection Department of the small tonnage coal-fired boiler limit policy, more and more enterprises have to carry on transformation of coal-fired boiler, or repurchase the new environmental protection boiler. In this way, condensate water recovering technology is adopted to change boiler feed water temperature,hence to improve boiler efficiency.In addition, low NOx technology can be utilized to reduce the emission of NOx.content.
Concerning the future development trend of power boiler in paper making industry, industrial boiler will tend to use clean fuel and clean combustion technology in efficient, energy saving, low pollution development direction. In the days to come, The proportion of industrial boiler in small capacity coal-fired boiler will continue to decline, while the gas and oil boiler with clean combustion technology will be rapidly developed to reach a greater progress,in addition, potential market of garbage and biomass fired boiler will be huger and huger.
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