Waste incineration power generation



Introduction to waste incineration power generation technology

     Municipal solid waste incineration power generation is a new energy technology developed in the past 30 years. Experts predict that with the standardization and industrialization of waste disposal in the 21st century, waste-to-energy will become the most economical way of generating electricity, keeping pace with pollution-free new energy such as solar power and wind power.

     Waste incineration requires three stages of drying, burning and burning, all of which are completed in the furnace. The garbage is fully burned at a high temperature of 850-1100 degrees Celsius. Through the DCS automatic control system and advanced combustion control system, it can instantly adjust and adjust the combustion conditions of the garbage in the furnace, adjust the running speed of the grate and the amount of combustion air in time, and incinerate the garbage. The high-temperature flue gas exchanges heat in the waste heat boiler to generate superheated steam, which promotes the clean energy generated by the steam turbine generator set. Electricity is delivered to the local area through the grid.


 


Waste incineration power generation process flow chart

1. Garbage receiving, storage and transportation system 2. Waste incineration system 3, waste heat utilization system 4, flue gas purification system 5, ash treatment system 6, power system 7, low-voltage power supply and distribution and electric drive 8, automatic instrument and computer system

    


Technical advantages

1. The mechanical grate tilts and reverses the movement, the maintenance cost is low, the grate air cooling is efficient, and the grate piece has a limited life.

2. It has SNCR\SCR flue gas denitration technology. Curing dry, semi-dry, wet flue gas deacidification technology, bag dust removal, electrostatic dust removal and other flue gas treatment technologies, all emission indicators fully meet the current EU standards, and can be customized for the "near zero emissions" program.

3, leachate treatment technology uses "pretreatment + IOC + A / O + UF + chemical softening + TIUF + RO / DTRO" new generation process combination technology, with low energy consumption, low operating costs, high efficiency, high yield, full reuse The characteristics of secondary pollution, etc., to achieve the "full amount of reuse" of leachate.





Domestic garbage production:

Basic factors affecting the output of domestic waste: population

According to the statistics of the Ministry of Construction:

The production of domestic garbage in small and medium-sized cities is 1.0kg/day
The output of domestic garbage in large cities is about 1.1~1.3kg/day




The nature of domestic garbage:


1, physical classification

General classification: three categories of nine small classes

Organics: kitchen waste, paper, wood bamboo, rubber, fiber

Inorganic: glass, metal, muck brick

other





2. Elemental analysis and industrial analysis

Elemental analysis needs to include: C, H, O, S, N, Cl

Industrial analysis generally includes: W, A, QL (low calorific value)




3, garbage calorific value


The requirements for the calorific value of the incoming

 refuse to achieve continuous and stable combustion of 

the garbage itself:


Comprehensive treatment plant operation experience: ≧3600kJ/kg;
The European Waste Incineration Engineering Company believes


 that: ≧ 5860kJ/kg, at which time the incineration thermal burn rate

 is ≦3%.a strict standard downline heating value with a CO content

 of 40 mg/Nm3;

According to the investment guidance of the waste incineration projec

t pointed out by the World Bank, the average low calorific value 

of waste is ≧7000kJ/kg, and 6000kJ/kg in any season.