LOW-CALORIFIC LIQUID FUELS.

Liquid industrial by-products often contain very little energy. They have a high water content and must be disposed of at great expense. Examples include soy molasses from food production and vinasse ("spent wash") from bioethanol production. With a water content of around 50% in the already concentrated solution and only 40% organic content, molasses and vinasse are usually a serious environmental problem. They are disposed of on agricultural land like manure – with fatal consequences for groundwater and air.

In the chemical industry, ACN polymer solutions or wastewater concentrates with a high phenolic resin content also belong to the group of low-calorific liquids that cannot be utilized with conventional combustion technology. For example, ACN polymer solution from plastics production contains an additional 10% organically bound nitrogen, while wastewater with phenolic resin content consists of around 90% water.

The bottom line is that the calorific values of these liquids are very low, at 7-10 MJ/kg for concentrated vinasse, for example, while the viscosity, which is sometimes 45 cSt at 100 °C, is often problematic. In addition, the combustion of vinasse and molasses produces a lot of ash with a low melting point, requiring a special boiler design. Nevertheless, the aforementioned substances can be thermally recycled, creating a win-win situation that benefits both the budget and the environment.

In the case of vinasse and molasses, this not only saves considerable amounts of primary energy, but also produces large quantities of valuable fertilizer from the ash, which improves the ecological balance twice over.

The SAACKE SSB-LCL is based on the proven SSB swirl burner and has an adapted burner muffle that makes it possible to utilize even problematic materials. This burner can be adapted to a wide variety of liquids, operated with various additional fuels, and guarantees maximum availability with minimum emissions