There are several precautions when recycling and utilizing waste heat from domestic waste incinerators. Holy Shield will explain to everyone and give corresponding solutions.

1.Avoid chloride corrosion

The domestic waste incinerator will produce a large amount of harmful substances in the working process. The chlorides in the harmful substances are extremely corrosive to the heating surface of the waste heat boiler. In addition, the high temperature catalysis in the process of domestic waste incineration, the corrosion of chlorides Sexuality will be further highlighted, causing irreversible damage to the heated surface. Therefore, in the recovery and application of waste heat from domestic waste incinerators, targeted measures must be taken based on the problem that chlorides will cause serious corrosion to the heating surface.

First of all, it is necessary to understand the influencing factors when chloride corrodes the heating surface. Based on relevant research data and practical experience, it can be seen that there are two main influencing factors:temperature, and heating surface material. Generally speaking, when the temperature is lower than 300℃, the corrosion of chloride on the heating surface is relatively light; when the temperature reaches 300℃, the corrosion of chloride on the heating surface is more serious; and when the temperature reaches 450℃, the chloride can corrode the heating surface more seriously.When the heating surface is a high-grade material, it is less susceptible to chloride corrosion, and when the heating surface is a low-grade material, it is more susceptible to chloride corrosion. Therefore, in order to avoid chloride corrosion and protect the heating surface, we can start from the two perspectives of controlling the temperature around the heating surface and optimizing the material of the heating surface to form an effective protection for the heating surface.

2.Avoid sulfide corrosion

Sulfide will be produced during the incineration of domestic waste.Sulfide will cause corrosion to the heating surface.Therefore, in order to avoid the corrosion of the heating surface by sulfide when recovering the waste heat of the domestic waste incinerator, it is necessary to effectively control the temperature to avoid the temperature being too low.
The specific control measures include: when designing the incinerator, ensure that the temperature of the incinerator can break through the sulfide dew point temperature when it treats domestic waste; in addition, a circuit breaker valve can also be designed between the heating surfaces, and the circuit breaker valve can be used to ensure that the temperature is always maintained at the sulfide temperature. above the dew point temperature.
3.Reduce ash formation on heated surfaces

There are countless fine particles in the flue gas formed by burning household garbage. These fine particles continue to accumulate on the heating surface and gradually form a structure similar to the thermal insulation layer, which is extremely unfavorable for the heating surface to absorb the waste heat of the incinerator. Therefore, when recovering and applying the waste heat of the domestic waste incinerator, certain protective measures must be taken for the heating surface to prevent the surface of the heating surface from forming ash.
In view of the above problems, the furnace can be expanded as much as possible when designing the furnace, and the radiant heating surface can be designed and arranged in a repeated arrangement to protect the heating surface, reduce the accumulation of smoke and dust on the surface of the heating surface, and make the cleaning of the surface of the heating surface easier. Holy Shield has 16 years of production and R&D experience and is a professional incinerator manufacturer. It has an independent technical research and development team, constantly innovating incineration technology, and has obtained 30 patent certifications. Our ability can better help you solve the problem of waste disposal and discharge standard, leave your confusion, we will answer you quickly.