Boiler Silica Aerogel Super Insulation Blanket Energy-saving Solution
The aerogel super insulation blanket produced by Tradematt is an excellent high thermal resistance inorganic thermal insulation profile, its thermal conductivity is significantly lower than traditional materials, and its heat preservation effect is extremely prominent. As a result, Tradematt has launched a thermal insulation and energy-saving scheme for boilers based on aerogel super-insulated blankets, which can achieve energy savings of 30-50%.
Pain points
Steam boilers are common heating equipment in factories and their heat losses are mainly in three aspects:
1. The heat loss from the exhaust fumes is mainly to reduce the temperature of the smoke and reduce the heat taken away by the flue gas.
2. The mechanical unburned heat loss is mainly due to the fact that there are many flammable materials with unburned ash and fly ash. It is necessary to maintain the thermal conditions in the furnace to reduce the ash residue char.
3. The heat loss on the surface of the furnace body is mainly due to the fact that the temperature of the outside surface of the boiler exceeds the design value, resulting in a reduction in the furnace efficiency. Therefore, high-quality insulation materials and construction quality are required.
When visiting various energy-consuming enterprises, it was found that the external surface temperature of boilers of many enterprises is generally around 60°C. When the thermal efficiency of boilers is reduced by 3-5%, the annual heat loss is as much as 300,000 yuan for a 35-ton steam boiler.
Cause Analysis
1. After 2 years of use, the insulation effect of traditional insulation materials will begin to decline year by year. The local temperature of the main combustion zone in the furnace will reach 80-120°C. The surface temperature of the convection heat exchanger will reach 40°C or more, and the energy loss will be exceeded. Increase and cause security risks.
2. The boiler space is limited, some parts are difficult to construct, the quality of traditional insulation materials is difficult to guarantee, the local temperature can reach more than 200°C, and energy is lost to traditional materials.
solution
Tradematt believes that to solve the heat loss problem on the surface of the furnace, it is necessary to start from reducing the surface temperature of the boiler, reduce the heat loss of the boiler and save energy. The use of aerogel super-insulated blanket to perform energy-saving technological changes on the boiler's external insulation can effectively improve the thermal efficiency of the boiler.
Aerogel Super Insulation Mats have an ultra-low thermal conductivity - one-half or more lower than conventional materials. In other words, the aerogel super insulation blanket has a much higher insulation performance than conventional materials when the same insulation thickness is used.
At the same time, the aerogel superinsulated blanket has a very high structural strength, and it has a huge advantage over traditional materials: traditional materials rely on low bulk density to achieve lower thermal conductivity, and the performance will drop a lot after stress deformation; The gel super-insulating blanket is based on a microscopic nano-scale pseudo-vacuum to achieve thermal insulation. Even when subjected to 80 MPA surface pressure, its thermal insulation performance will not be reduced but will be enhanced.
Because the traditional insulation material sacrifices structural strength to lower the thermal conductivity, its performance decays rapidly. Moreover, when the furnace body is maintained, traditional insulation materials cannot be reused after being dismantled, and a large amount of solid waste is also generated. The service life of aerogel super insulation blankets can be as long as more than 20 years, and repeated demolition and repeated use will not have any effect on their thermal insulation properties.
In addition, the construction of the aerogel super insulation mat is simple and convenient, and it can still exert its superior performance in some parts that are difficult to construct and guarantee quality.
Implementation process
1. Site survey, measurement and record of raw data: survey the surface of the boiler radiation section, transition section, furnace body rear plate surface temperature, determine the thickness of the insulation layer according to the detection temperature level.
2. The statistical data analysis working conditions give the best solution: Detailed analysis of the data, calculation of actual heat dissipation, insulation thickness, temperature drop, and submission of project proposal to Party A.
3. Sign the contract and construct it.
4. Completed acceptance.