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Heat and power cogeneration process for charcoal fertilizer and activated charcoal by taking municipal refuse derived fuel RDF-5 as raw material

A technology of RDF-5 and derived fuels, which is applied in the direction of organic fertilizers, fertilization devices, fertilizer mixtures, etc., can solve the problems of non-degradation by microorganisms, large potential hazards, and low comprehensive utilization efficiency, and achieve high calorific value utilization and low emission The effects of less pollution, improved resource utilization and comprehensive economic benefits

Inactive Publication Date: 2018-05-15
四川雷鸣生物环保工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Derivative fuel RDF-5 is made of organic combustibles in urban waste as the main raw material, such as mixed plastics, fabric fibers, rubber, branches, kitchen and bathroom waste, etc.; it contains high organic matter and certain heavy metals, mainly Including elements with significant biological toxicity such as mercury (Hg), cadmium (Cd), lead (Pb), chromium (Cr) and metalloid arsenic (As), as well as certain toxic elements such as zinc (Zn), copper (Cu), nickel (Ni) and other elements; at present, the derivative fuel RDE-5 mostly uses direct combustion for heat utilization, but it is prone to generate dioxins during direct incineration, low comprehensive utilization efficiency, and simultaneously emits toxic and harmful pollutants such as nitrogen oxides and heavy metal pollutants. At the same time, toxic heavy metals cannot be effectively solidified. Heavy metal pollutants have little mobility in the soil, are not easy to leach with water, and are not degraded by microorganisms. After entering the human body through the food chain, the potential harm is extremely great. The effect of environmental protection

Method used

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  • Heat and power cogeneration process for charcoal fertilizer and activated charcoal by taking municipal refuse derived fuel RDF-5 as raw material
  • Heat and power cogeneration process for charcoal fertilizer and activated charcoal by taking municipal refuse derived fuel RDF-5 as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Such as figure 1 As shown, in this embodiment, the thermoelectric charcoal fertilizer activated carbon co-production process using municipal waste-derived fuel RDF-5 as raw material includes the following steps: 1) Pyrolysis and gasification: RDF-5 fuel is sent into the gasifier, and at 600 ℃, air equivalence ratio of 0.18 under micro-oxygen conditions, pyrolysis and gasification, to obtain biomass mixed gas and biochar raw materials containing some impurities, and discharge the biochar raw materials in the furnace; 2) Gas separation: from the gasification furnace The exhausted biomass mixed gas is purified and removed from wood tar and wood vinegar to obtain a mixture of the two and purified gas; 3) Combustion: send the purified gas to the gas boiler for combustion to generate steam, and part of the steam is passed into the steam turbine to generate electricity ;4) Biochar raw material treatment: Send a part of the discharged biochar raw material into a charcoal activa...

Embodiment 2

[0017] In this example, the thermoelectric charcoal fertilizer activated carbon co-production process using municipal waste-derived fuel RDF-5 as raw material includes the following steps: 1) Pyrolysis and gasification: RDF-5 fuel is sent into the gasifier, at 700 ° C, Pyrolysis and gasification under micro-oxygen conditions with an air equivalent ratio of 0.21 to obtain biomass mixed gas and biochar raw materials containing some impurities, and discharge the biochar raw materials in the furnace; 2) Gas separation: the gas discharged from the gasifier Biomass mixed gas is purified and removed from wood tar and wood vinegar to obtain a mixture of the two and purified gas; 3) Combustion: send the purified gas to the gas boiler for combustion to generate steam, and part of the steam is passed into the steam turbine to generate electricity; 4 ) Biochar raw material treatment: send a part of the discharged biochar raw material into a charcoal activation furnace and heat it to 930°C,...

Embodiment 3

[0019] In this example, the thermoelectric carbon fertilizer activated carbon co-production process using municipal waste-derived fuel RDF-5 as raw material includes the following steps: 1) Pyrolysis and gasification: the RDF-5 fuel is sent into the gasifier and heated at 800°C, Pyrolysis and gasification under micro-oxygen conditions with an air equivalent ratio of 0.25 to obtain biomass mixed gas and biochar raw materials containing some impurities, and discharge the biochar raw materials in the furnace; 2) Gas separation: the gas discharged from the gasifier Biomass mixed gas is purified and removed from wood tar and wood vinegar to obtain a mixture of the two and purified gas; 3) Combustion: send the purified gas to the gas boiler for combustion to generate steam, and part of the steam is passed into the steam turbine to generate electricity; 4 ) Biochar raw material treatment: send a part of the discharged biochar raw material into a charcoal activation furnace and heat it...

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Abstract

The invention discloses a heat and power cogeneration process for a charcoal fertilizer and activated charcoal by taking municipal refuse derived fuel RDF-5 as a raw material. The heat and power cogeneration process comprises the steps: 1) pyrolysis and gasification, namely delivering the fuel RDF-5 into a gasification furnace, carrying out pyrolysis and gasification under micro-aerobic conditionsthat the temperature is 600-800 DEG C and the equivalent ratio of air is 0.18-0.25 to obtain biomass mixed fuel gas and a biochar raw material, and discharging the biomass mixed fuel gas and the biochar raw material; 2) separation, namely purifying the biomass mixed fuel gas, and removing wood tar oil and a wood vinegar liquid to obtain a mixed liquid of the wood tar oil and the wood vinegar liquid and purified fuel gas; 3) combustion, namely delivering the purified fuel gas into a gas-fired boiler for combusting to generate steam; and 4) charcoal raw material treatment, namely delivering a part of the biochar raw material into a charcoal activation furnace to be heated to 900-960 DEG C, meanwhile, introducing the steam to the charcoal activation furnace to obtain activated charcoal; andmixing the other part of the biochar raw material with the mixed liquid of the wood tar oil and the wood vinegar liquid and an organic nitrogen, phosphorus and potassium fertilizer. The heat and powercogeneration process has the advantages of high calorific value utilization ratio and low emission pollution level and is not only capable of effectively solidifying poisonous heavy metals in the derived fuel, but also capable of obtaining a high-quality charcoal-based compound fertilizer or activated charcoal and increasing the resource utilization rate and the comprehensive economic benefit.

Description

technical field [0001] The invention relates to a co-production process of thermoelectric charcoal fertilizer and activated carbon using urban garbage derived fuel RDF-5 as raw material. Background technique [0002] Derivative fuel RDF-5 is made of organic combustibles in urban waste as the main raw material, such as mixed plastics, fabric fibers, rubber, branches, kitchen and bathroom waste, etc.; it contains high organic matter and certain heavy metals, mainly Including elements with significant biological toxicity such as mercury (Hg), cadmium (Cd), lead (Pb), chromium (Cr) and metalloid arsenic (As), as well as certain toxic elements such as zinc (Zn), copper (Cu), nickel (Ni) and other elements; at present, the derivative fuel RDE-5 mostly uses direct combustion for heat utilization, but it is prone to generate dioxins during direct incineration, low comprehensive utilization efficiency, and simultaneously emits toxic and harmful pollutants such as nitrogen oxides and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/336C05G3/00C05G3/02C05G3/04C05G3/60C05G3/80
CPCC05D9/00C05G3/00C05G3/60C05G3/80C05F11/00
Inventor 雷建国雷丰源
Owner 四川雷鸣生物环保工程有限公司
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