Process for treating domestic rubbish and wastes of agriculture and animal husbandry by low-pressure oxidation degradation method

A domestic waste and oxidative degradation technology, which is applied in the fields of solid waste removal, climate change adaptation, organic fertilizer, etc., can solve the problems of severe chemical reaction conditions, environmental pollution, etc., and achieve the effect of effective treatment and reduction of harm

Inactive Publication Date: 2010-10-13
云南天远生态环保科技有限责任公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

These methods all use sulfuric acid as a catalyst, and there are severe chemical reaction conditions in the hydrolysis process, causing environmental pollution; the upper limit of the process temperature is 200 ° C, and the fatty biomass and its waste, including the product produced during its processing Leftovers, leftovers and viscera and other discards, leftovers, fur, and leftovers from livestock, poultry and their processing, and animal waste in catering and kitchen waste. ℃, causing fatty biomass and its wastes to not be degraded

Method used

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  • Process for treating domestic rubbish and wastes of agriculture and animal husbandry by low-pressure oxidation degradation method

Examples

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Embodiment 1

[0021] Embodiment 1: The raw materials are 50wt% domestic garbage, 50wt% agricultural and animal husbandry waste and biomass waste. The ferromagnetic materials and the raw materials with a particle size of 8mm≤Φ≤68mm are sent to the oxidation kettle through the magnetic separation of the second-level automatic magnetic separation device. When the raw materials enter the oxidation kettle, they are preheated to 60 ℃ the volume percentage of oxygen is 30% oxygen-enriched air, and adding concentration is 10wt% and the weight ratio of raw material is 100:5 P 2 o 3 , so that it is fully mixed with the material; when the volume of the raw material reaches 75% of the volume of the oxidation kettle, stop feeding, stop feeding the oxygen-enriched air when the pressure reaches 0.1Mpa, start to heat up, and the temperature rises from room temperature to 145 within 5 minutes ℃, the pressure is controlled at 0.5Mpa, heat preservation and pressure holding for 12 minutes, and the starches ar...

Embodiment 2

[0023] Embodiment 2: The raw material is 100wt% domestic waste. Take the organic matter in the household garbage and put it into the oxidation kettle. When the raw material enters the oxidation kettle, the oxygen-enriched air preheated to 50°C is introduced into the oxygen-enriched air, and the concentration of 6wt% P 2 o 3 , so that it is fully mixed with the material; the P 2 o 3 The weight ratio with the raw material is 100:4; the volume percentage of oxygen in the oxygen-enriched air is 25%;

[0024] When the raw material volume reaches 80% of the oxidation kettle volume, stop feeding, stop feeding the oxygen-enriched air when the pressure reaches 0.2Mpa, start to heat up, the temperature rises to 145°C from room temperature in 5 minutes, and the pressure control is 0.6Mpa, After heat preservation and pressure for 12 minutes, the starches are degraded; then continue to heat up from 145°C to 205°C within 5 minutes, the pressure is controlled to 1.0Mpa, heat preservation ...

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Abstract

The invention relates to a process of treating domestic rubbish and wastes of agriculture and animal husbandry by a low-pressure oxidation degradation method. Domestic rubbish, wastes of agriculture and animal husbandry, and biomass wastes are used as raw materials; after separation and crushing, the raw materials are treated in an oxidation kettle with a near critical low-pressure oxidation degradation method; and according to the three components of the raw materials, the method is divided into three stages, i.e. a low temperature stage, an intermediate temperature stage and a high temperature stage, to carry out low-pressure oxidation degradation so as to ensure that the raw materials in each temperature stage are thoroughly degraded. The production efficiency and the product quality are enhanced, the wastes are changed into resources to the largest limit, and the residue-free treatment is realized by recycling.

Description

1. Technical field [0001] The invention relates to a process for treating domestic garbage and agricultural and animal husbandry waste by a low-pressure oxidation degradation method, and belongs to the technical field of near-critical low-pressure chemical treatment. 2. Background technology [0002] In the past, the treatment methods of domestic waste were mainly landfill, incineration, and composting. In recent years, industrial hydrolysis methods using acid, alkali and enzymes as catalysts have emerged to treat organic matter in domestic waste. [0003] The known method of producing organic compound fertilizer from domestic garbage is mainly to select the organic matter in the garbage and refine it into granules, add sulfuric acid and phosphide as additives, and then carry out aging treatment. Water vapor, pressure 0.7-1.1Mpa, heat preservation and pressure holding for 1-2 hours. Some also add dilute sulfuric acid to the organic matter and then carry out hydrolysis hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C05F15/00C05F9/00
CPCY02A40/20
Inventor 杨辉
Owner 云南天远生态环保科技有限责任公司
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