History of waste incinerator development

Waste incinerator is the equipment for incineration and treatment of waste. The waste is burned in the furnace and becomes waste gas into the secondary combustion chamber. It is completely burned under the forced combustion of the burner and then enters the spray dust collector. waste incinerator by waste pre-treatment system, incineration system, smoke biochemical dust removal system and gas generator (auxiliary ignition incineration) four systems, set automatic feeding, screening, drying, incineration, dust removal, automatic control in one.

Waste incinerator is a kind of harmless treatment equipment often used in medical and life waste products and animal harmless treatment. Its principle is the use of coal, fuel oil, gas and other fuels burning, the object to be treated with high temperature incineration carbonization, in order to achieve the purpose of disinfection treatment.

Waste incineration is suitable for household waste, medical waste, general industrial waste (general industrial waste using high temperature combustion, secondary oxygen, automatic discharge of slag high-tech measures, to meet the monitoring requirements of pollution).

Compared with landfills and composting, waste incineration is more land efficient and does not cause surface and groundwater pollution. With the acceleration of urbanization and the construction land index approaching the limit, waste incineration has gradually become a practical choice for the large and medium-sized cities in the central and eastern parts of the country with dense population, land shortage and besieged by garbage.

The world's first solid waste incineration equipment was born in Europe during the second technological revolution. By the second half of the 19th century, Paddington, England, had developed into a densely populated industrial city. In 1870, a waste incinerator was put into operation in Paddington. At that time, the moisture and ash content of the waste were very high, so its calorific value was low and it was difficult to burn, so the operation of the incinerator was poor and soon ceased. In view of the poor quality of garbage, incineration difficulties, the first use of double grate (lower grate for strong burning coal seam), and then in 1884 to try to refuse and coal mixed combustion, in order to improve the combustion characteristics of garbage fuel. However, the two attempts have not obtained satisfactory results, and because of the low chimney, the nearby environment is polluted by irritant smoke.

In order to solve the problem of irritating smoke and black carbon pollution, the first measures taken were to raise the incineration temperature to 700℃, and later to 800 ~ 1100℃. At that time, people already know the impact of the amount of combustion air and input mode on the flue gas temperature, so it has been adopted to increase the chimney, the configuration of fan and induced draft fan and other measures, in order to increase the ventilation and meet the demand for combustion air in the incineration process. When the chimney is raised, it also solves the diffusion problem of irritating and harmful substances in the smoke.

Since the type and composition of waste can vary greatly from place to place and season to season, waste incineration equipment must have good fuel adaptability. In this regard, the technical measures taken at that time were the addition of waste drying zones in incinerators and the use of combustion air preheating.