Anti fouling energy-saving emission reduction technology as a new technology in recent years research, through basic research to industry, has been successfully used in industrial production and has achieved remarkable results in the removal of heat exchanger.
The anti fouling technology of heat transfer in fluidized bed is a widely used and effective method, especially in solving the problem of scaling and heat transfer in the heat exchanger. It can effectively solve the preheater, evaporator, condenser, cooler, reboiler, crystallization, online industrial boiler and gravity heat pipe exchangers enhance heat transfer and prevent and remove the problem. The technology can be used in petroleum, chemical industry, light industry, salt, aluminum, pharmaceutical, food, papermaking, lithium industry, thermal power plant, wastewater treatment and desalination and other industries.
The innovation of anti fouling energy saving technology of fluidized bed heat exchange is that the heat exchange process and the fluidized bed technology are combined to form a fluidized bed heat exchange system. The fluidized bed of solid particles of random movement, the boundary layer flow and heat transfer boundary layer heat transfer wall damage, thereby reducing the thermal resistance to heat transfer enhancement effect. The destruction of the boundary layer and the stirring of the fluid in the tube can prevent the solute from forming the degree of saturation in the boundary layer solution, prolong the induction period of the scale, and then achieve the purpose of online anti fouling. In addition, due to the increase of heat transfer coefficient, the wall temperature is decreased, which is beneficial to prevent fouling.
Anti fouling fluidized bed heat energy saving technology for stable operation, strong applicability, simple and easy modification, mainly has the following characteristics: (1) inert solid particles will not pollute the liquid, to ensure product quality; (2) both online and anti scaling, can also be online descaling; (3) can be used for forced circulation, can also be used for natural circulation; (4) enhancing heat transfer and prevention and removal mechanism and material properties; (5) pilot and industrial production scale and the effect of heat transfer enhancement is basically the same; (6) the pipe inside the convection heat transfer coefficient can be increased to 1.5-2.0 times; (7) can reduce the heat pipe wall temperature, reduce corrosion; (8) both can be transformed to a heat exchange device with the original technology, can also be constructed for heat exchange device of the technology.
This technology can improve the heat transfer efficiency of heat exchanger, reducing coal consumption and environmental pollution, prolong the cleaning period, increase the actual production time, reduce labor, mild reducing noise and improving operation environment, for the company's energy saving, energy saving and production increasing, considerable social benefits, environmental benefits and economic benefits.
The anti fouling fluidized bed heat energy saving technology has entered the industrialization stage, and has been achieved in the field of industrialization, such as: the magnesium chloride solution evaporation, herbal extract evaporation and concentration of calcium chloride solution, caustic soda evaporation, wastewater treatment, water evaporation and evaporation of solution salt, lithium hydroxide, lithium sulfate solution evaporation evaporation phosphate, evaporator and the transformation of the industrial boiler energy saving etc..
According to statistics, more than 90% of the heat exchange equipment there is a scaling problem in different degree, which not only seriously affect the normal operation of heat exchangers, to the users of the equipment caused a huge waste of energy and economic losses. Global economic losses caused by dirt accounted for about 0.25% of global GDP, while China's loss in this area is far higher than the world average, even by 0.25%, then the annual economic losses are very large. Such as China's GDP68.42 trillion yuan in 2015 to calculate, the result of the economic losses caused by scaling up to about 171 billion 100 million yuan. Therefore, it is of great value and far-reaching significance to take effective measures to solve the scaling problem of heat exchange equipment and to reduce the energy waste and economic losses.
Source: China Chemical Equipment Association