Garbage gasification and combined heat and power system

Abstract

The invention discloses a garbage gasification and combined heat and power system comprising a raw garbage pretreatment system; a raw garbage bin of the raw garbage pretreatment system is divided intotwo paths, one path is connected with a garbage leachate treatment system, the other path is connected with a gasification furnace of a garbage gasification synthesis system, and both the garbage leachate treatment system and the garbage gasification synthesis system are connected with a garbage ash treatment system; and the garbage gasification synthesis system is also connected with a synthesisgas heat exchanger of a synthesis gas waste heat utilization system by virtue of a synthesis gas purification system, and a washing tower of the synthesis gas purification system is connected with aflue gas purification and waste heat utilization system by virtue of a synthesis gas power generation system, so that the aims of garbage gasification as well as combined heat and power of the systemare achieved. Garbage is effectively purified by using a gasification process and a subsequent synthesis gas purification process in combination with requirements of a combustion gas turbine for the high calorific value, low tar and low metal content of fuel gas, the treated synthesis gas is capable of meeting the combustion requirement of the combustion gas turbine, and finally, the requirementsfor garbage gasification, power generation and heat supply are met.

Description

technical field [0001] The invention belongs to the technical field of waste reduction and harmless treatment, and in particular relates to a waste gasification combined heat and power system. Background technique [0002] At present, the total amount of garbage cleared and transported in my country is about 179 million tons per year. Due to the low level of treatment technology, a large amount of garbage is only transported to the suburbs of cities or at the junction of urban and rural areas for random stacking or simple landfill. my country's modernization process and urbanization development. [0003] Sanitary landfill and stacking are the main treatment methods of garbage in my country at present, accounting for 88% of the total garbage treatment in my country, but these two methods have neither achieved "harmless" garbage, nor achieved "resource" and "Reduction". As far as the current research is concerned, the heat utilization method represented by waste incineration t...

AI Technical Summary

Problems solved by technology

[0006] 2) Disposal of domestic waste by incineration is easy to cause secondary pollution

Waste incineration fly ash is a hazardous waste, which contains a large amount of heavy metal elements such as Pb, Cr, and Cd, which is very harmful to the environment and must be properly disposed of. Currently, cement curing, chemical pickling and other methods are usually used. High cost and incomplete treatment

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