Domestic Waste High Temperature Gasification Incinerator System Performance and Energy Recovery

I. Introduction of Domestic Waste High Temperature Gasification Incinerator System

Domestic Waste High Temperature Gasification Incinerator System(HTG Domestic Waste Incinerator) is developed after years of research and development, experiments and data accumulation, based on the comparison of the current mainstream domestic waste treatment process and the current status of domestic waste treatment in towns, large supermarkets, communities, etc. The equipment is based on the principle of gasification and incineration, which converts solid domestic waste into 90% gaseous substances and 10% ash, thereby achieving the goal of on-site reduction and harmless treatment of domestic waste.

HTG Domestic Waste Incinerator is mainly composed of a pretreatment system, a gasification incineration system, a high-temperature flue gas system and a low-temperature flue gas purification system. The total processing capacity is 3~200t/d. Customized design and equipment can be carried out according to local emission requirements and customer needs. It can be used for a variety of material processing, such as rubber, paper, plastic particles, etc. It has strong tolerance and is characterized by low operating costs, excellent processing effects and high degree of automation.

Pretreatment System

Gasification Incineration System

Gasification Incineration System

Low-Temperature Flue Gas Purification System

II. HTG Domestic Waste Incinerator Performance

1. Operation mode

The 3~5t/d gasification incineration system can be started and stopped daily, and the daily operation time is generally 8~24 hours. The 5~200 t/d gasification incineration system needs to run continuously for 24 hours, feed once every 2-3 hours, and discharge at regular intervals depending on the incineration situation in the furnace. The operation mode can be selected from PLC, touch screen or button control, and most operations are completed in the control room. Equipped with a monitoring system, the temperature, air pressure, fan frequency and operation status of each device in the furnace can be viewed in real time; an optional continuous emission monitoring system can be used to monitor the content of various pollutants in the exhaust gas.

2. Feeding requirements

Ø(1) Requirements for incinerable waste

① Types of incinerable waste: household waste and other waste, including rubber, plastic, fabric, paper, etc.;

② Ash content requirement: ash content not more than 25%;

③ Moisture content requirement: moisture content not more than 50%. A large amount of kitchen waste and restaurant waste cannot be mixed, otherwise the moisture content of the waste will be high, the calorific value of the waste will be reduced, and the waste treatment effect will be affected;

(2) Non-incinerable waste

Explosive items (firecrackers, pressure vessels, etc.), electrical equipment such as televisions and refrigerators, iron blocks, construction waste, stones, quilts, hemp ropes and other large-volume, long-strip waste should be sorted out before entering the pretreatment system.

3. Service life

The designed service life of the gasification incinerator system is 10 years, and it can be used for 15 years under normal operation and maintenance. The equipment needs regular maintenance. Generally, it needs to be shut down for inspection and maintenance of the entire system after 3-6 months of continuous operation, such as replacement of wearing parts, replenishment of lubricating oil, detection of abnormal conditions, etc. The single maintenance time is about 7 days, and the planned downtime is about 14 to 28 days per year.

III. Output and energy recovery

1. Post-incineration products

Solid waste: about 10% of the original garbage slag and 1% of fly ash. If the ash content in the original garbage is high, this proportion may increase slightly.

Wastewater: no wastewater is discharged. The leachate generated by the garbage storage tank is small and can be sprayed back into the incinerator for treatment.

Waste gas: The configured flue gas purification system purifies the flue gas after incineration, and the pollutant content in the flue gas discharged from the flue gas will be lower than the local emission standard.

2. Energy recovery

3~50t/d generally uses heat exchange equipment to recover flue gas heat: the high-temperature flue gas generated in the incinerator passes through the tube side of the heat exchanger to heat the circulating cooling water in the shell side. The hot water can be used for heating in winter, and the circulating water is cooled and reused through the cooling water tower above the circulating water pool in summer. Incineration power generation is not recommended for this processing volume, as the cost investment is high, the power generation is small, and the economy is poor.

More than 50t/d can achieve energy recovery by generating electricity or recovering hot water.

Slag can be used to make bricks or converted into asphalt aggregate.