In actual production and Custom Evaporator Coils, evaporators that directly contact heat transfer are sometimes used. After mixing fuel and air, it burns in a combustion chamber immersed in the solution, and the high-temperature flame and smoke generated are directly sprayed into the evaporated solution through a nozzle in the lower part of the combustion chamber. The high-temperature gas is in direct contact with the solution, and heat transfer is carried out to evaporate and vaporize the water, and the generated water vapor and waste flue gas are discharged from the top of the evaporator together. The immersion depth of the combustion chamber in the solution is generally 0.2-0.6m, and the temperature of the gas exiting the combustion chamber can reach above 1000°C. Because of the direct contact heat transfer, its heat transfer effect is very good, and the heat utilization rate is high.

Because it does not require a fixed heat transfer wall, the structure is simple, and it is especially suitable for the evaporation of materials that are easy to crystallize, scale, and corrosive. It has been widely used in waste acid treatment and evaporation of ammonium sulfate solution. However, this type of evaporator is generally not applicable if the evaporated material liquid is not allowed to be contaminated by the flue gas. Moreover, due to the existence of a large amount of flue gas, the utilization of secondary steam is limited. In addition, the nozzle is easily damaged because it is immersed in a high-temperature liquid. It can be seen from the above introduction that there are many types of evaporators, each with its own advantages and disadvantages and applicable occasions.

The manufacturer will Evaporator Coils For Sale. When we select the model, we must first see whether it can adapt to the process characteristics of the evaporated material, including the viscosity, heat sensitivity, corrosiveness of the material, and whether it is easy to crystallize or scale, and then ask for its structure Simple, easy to manufacture, low metal consumption, convenient maintenance, good heat transfer effect and so on.