For biomass smokeless boilers, although theoretically there is little ash, because the collected raw materials contain more sand and soil, the discharge of ash and slag is still increased, and the effect of direct use as potash fertilizer is not ideal. Therefore, before the boiler renovation, all the ash and slag were entrusted to be transported out of the country, which was costly and wasted resources. After the transformation, a set of brick-making equipment was introduced, and hollow bricks were made from ash, waste water, lime, and cement in a certain proportion. This not only solved the problem of ash and waste water treatment, but also increased the benefits and realized “turning waste into treasure.” “Waste recycling.”

Biomass smokeless boiler wastewater is mainly composed of three parts. Part of the sewage comes from the softening process of the feed water of the biomass smokeless boiler, the second part comes from the waste water of the biomass smokeless boiler, and the third part comes from the high-temperature condensate in the carton production workshop, which has not been considered for recycling before. Among them, except for the third part of high-temperature condensate water that is very clean, the sewage generated in the first two parts is weakly alkaline water, mainly calcium and magnesium ion salts, which are only recycled to the neutralization tank for treatment before being discharged. After the transformation, the introduced brick-making process recycled the first two parts of sewage, and achieved the ideal effect of having both economic and environmental benefits.

In order to solve the problem of alkali metal deposition, a steel ball cleaning system was added at the heat exchange tube bundle at the furnace outlet of the biomass smokeless boiler. The system uses the vacuum formed by the throat of the venturi tube to draw the steel ball from the lower part of the tail flue to the upper part and then from the upper part to the purpose of cleaning the heating surface of the tail. It is set to automatically remove ash three times a day, which greatly improves Thermal efficiency of biomass smokeless boiler.