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Process for gasification-liquefaction disposal of domestic garbage and organic waste

A technology for organic waste and domestic waste, which is applied in the field of harmless disposal of solid waste, and can solve problems such as dioxin pollution and environmental pollution

Inactive Publication Date: 2013-02-27
周开根
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of dioxin pollution caused by the incineration method, overcome the shortcomings of the incineration method to dispose of domestic garbage polluting the environment, and propose a method for disposing of domestic garbage and organic waste with gasification-liquefaction, which is effective Inhibit the formation of pollutants including dioxin, do not discharge pollutants during the entire disposal process, protect the ecological environment, and at the same time convert domestic garbage and organic waste into a clean energy

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  • Process for gasification-liquefaction disposal of domestic garbage and organic waste

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Embodiment 1

[0050] Embodiment 1: In this embodiment, before the domestic garbage enters the gasifier, the content of the inorganic matter is within 5%, and the water content is within Below 15%, the calorific value reaches more than 9000kj / kg, in order to reduce the energy consumption in the gasifier and facilitate the subsequent purification. The domestic waste pretreatment adopts conventional technology or applies the Chinese patent ZL 2008201391055 "Pretreatment system for domestic waste as fuel utilization and equipment” technology; the plasma gasifier applies the gasifier of the tenth embodiment in the Chinese patent ZL 2008202082326 “Garbage and organic waste gasification system and equipment”, and the structure of the gasifier can achieve the present invention process requirements. The pretreated domestic garbage or organic waste is fed into the furnace from the feed port on the top of the gasifier, and at the same time, 0.5-1Mpa water vapor is fed into the plasma spray gun and hea...

Embodiment 2

[0051] Embodiment 2: In this embodiment, the same plasma gasification furnace as in Embodiment 1 is used, and the waste materials after dehydration, large-scale crushing, and removal of metal and inorganic substances are sent into the plasma gasification furnace. Under the condition of providing oxygen or air, the complete gasification of waste materials is realized, and hydrogen-rich synthesis gas without oxygen components is generated. into the methanol synthesis reactor to catalyze the synthesis of methanol products, and then mix the methanol products with lime water for terminal purification operations to remove possible pollutants such as dioxins, and then purify the methanol products through temperature-variable operations. The difference between this embodiment and the first embodiment is: the calcium oxide powder of 20-50 microns is sprayed into the furnace from the air distributor arranged on the side wall of the first gasification area, and is used as a degasification...

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Abstract

The invention discloses a process for gasification-liquefaction disposal of domestic garbage and organic waste, which relates to disposal technology of the domestic garbage and the organic waste. The process comprises the steps of: performing oxygen-free gasification on the domestic garbage or the organic waste in a plasma gasification furnace to produce hydrogen-rich syngas which does not contain oxygen and takes CO and H2 as main components, wherein the conditions of the formation of dioxin are avoided; then sending the hydrogen-rich syngas taken as feed gas into a methanol synthesis reactor to catalytically synthesize a methanol product after temperature reduction and dust removal / purification; then drawing the methanol product out of the reactor to mix with lime water for terminal purification operation; and using calcium hydroxide as an absorbent to ensure that pollutants and purities which are not eliminated in a dust removal / purification working procedure and comprise the dioxin are removed. The process almost has no the discharge of the pollutants during the whole disposal process, and is suitable for harmless disposal of municipal domestic waste, rural domestic refuse, medical waste, industrial polymer waste, agricultural and forestry waste, composting leftovers and refuse sorting field waste.

Description

technical field [0001] The invention relates to the disposal technology of domestic garbage and organic waste, in particular to a method for harmless disposal of solid waste. Background technique [0002] With the development of my country's national economy and the continuous expansion of urban scale, domestic garbage and organic waste have increased rapidly, resulting in flooding of garbage. At present, many cities in my country have been surrounded by garbage, which has affected the sustainable development of my country's national economy. Develop and restrict the development of the city. Household garbage and organic waste contain many harmful components. If they are not handled properly, they will pollute the environment and threaten people's health. At present, the treatment of domestic waste mainly includes waste classification and comprehensive utilization, sanitary landfill technology, composting (biochemical) technology and incineration technology. Among them, wast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/04C07C29/151C07C29/76C07C29/88C01C1/04F25J3/00C10J3/60
CPCY02E50/32Y02E50/10Y02E50/30
Inventor 周开根
Owner 周开根
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