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Method and system for staged utilization of pyrolysis products of carbon-containing organic matter in regenerative rotating bed

A technology of pyrolysis product and rotating bed, which is applied in the field of solid waste recycling and can solve the problems of low pyrolysis temperature, low resource utilization level, and high energy consumption of pyrolysis furnace.

Active Publication Date: 2018-08-21
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing carbon-containing organic matter pyrolysis technologies generally include pretreatment systems, pyrolysis systems, purification systems, etc. The main problems are: (1) The pyrolysis temperature is relatively low, generally around 600°C. The pyrolysis is incomplete, and the output of pyrolysis gas is low; (2) The existing carbon-containing organic matter pyrolysis technology collects the pyrolysis gas uniformly, and the pyrolysis gas has a low calorific value and can only be used for heating of the device. (3) Under the condition of not adding catalyst, the yield and calorific value of pyrolysis gas are low, and the economy is not good; (4) The energy consumption of pyrolysis furnace is large, and the heat utilization rate is low

Method used

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  • Method and system for staged utilization of pyrolysis products of carbon-containing organic matter in regenerative rotating bed
  • Method and system for staged utilization of pyrolysis products of carbon-containing organic matter in regenerative rotating bed
  • Method and system for staged utilization of pyrolysis products of carbon-containing organic matter in regenerative rotating bed

Examples

Experimental program
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Effect test

Embodiment 1

[0098] Using municipal solid waste from a certain city as raw material, the moisture content of the waste is 55%, and the percentage content of each component is as follows:

[0099] Table 1 Percentage of each component of domestic waste (wet basis)

[0100]

[0101] Household garbage with a moisture content of 55% is sorted to remove most of the inorganic substances such as metal, glass and bricks. The organic matter is transported to the crushing equipment, and the organic matter crushed to less than 50mm is evenly mixed with 10% (weight percent) of the catalyst and then enters the regenerative rotating bed, and is heated by the radiant tube of the regenerative rotating bed and the preheating gas, and can be steamed out. About 50% moisture, at this time, the water vapor temperature reaches 260°C, and enters the heat exchanger through the water vapor outlet for heat exchange. The organic matter with a moisture content reduced to about 5% enters the medium-temperature pyro...

Embodiment 2

[0103] Adopt the house refuse of certain community, moisture content is 40%, and its each component percentage content is as follows:

[0104] Table 2 Percentage of each component of domestic waste (wet basis)

[0105]

[0106]Domestic waste with a moisture content of 40% is sorted to remove most of the inorganic substances such as metal, glass and bricks. The organic matter is transported to the crushing equipment, and the organic matter crushed to less than 40mm is evenly mixed with 8% (weight percent) of the catalyst and then enters the regenerative rotating bed. After being heated by the radiant tube of the regenerative rotating bed and the preheating gas, it can be steamed out. About 37% moisture, at this time, the water vapor temperature reaches 240°C, and enters the heat exchanger through the water vapor outlet for heat exchange. The organic matter with moisture content reduced to about 3% enters the medium-temperature pyrolysis zone along with the annular furnace b...

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Abstract

The invention discloses a method and a system sectionally utilizing carbonaceous organic matter pyrolysate in a heat accumulation type rotating bed. The method comprises the following steps: mixing carbonaceous organic matters with a catalyst so as to obtain a raw material to be pyrolyzed; distributing the raw material to be pyrolyzed in a feeding zone in the heat accumulation type rotating bed, and sequentially conveying the raw material to be pyrolyzed in the feeding zone through a drying zone, a middle-temperature pyrolysis zone and a high-temperature pyrolysis zone; carrying out drying treatment in the drying zone and producing steam; carrying out early catalytic pyrolysis treatment in the middle-temperature pyrolysis zone and producing middle-temperature oil gas pyrolysate; carrying out high-temperature pyrolysis treatment in the high-temperature pyrolysis zone so as to produce high-temperature gas pyrolysate and carbon pyrolysate; and introducing one part of high-temperature gas pyrolysate into the drying zone from the high-temperature pyrolysis zone, and carrying out drying treatment on the raw material to be pyrolyzated. The method can sectionally carry out pyrolysis treatment on carbonaceous organic matters and separately carry out further treatment and reutilization on products in each period, so that the utilizing rate of carbonaceous organic matter pyrolysate can be obviously improved.

Description

technical field [0001] The invention belongs to the field of solid waste resource treatment, and in particular relates to a method and a system for segmentally utilizing carbon-containing organic matter pyrolysis products in a regenerative rotating bed. Background technique [0002] Carbon-containing organic matter includes domestic garbage, domestic sludge, biomass, etc. With the rapid development of the economy, the continuous growth of the population and the improvement of people's living standards, the generation of domestic waste in my country has increased sharply. cities are surrounded by garbage. Common disposal methods for domestic waste include landfill, incineration and composting. Among them, landfill and composting have fallen into the predicament of occupying a large amount of land, poor product sales, and low level of resource utilization. Although incineration can achieve volume reduction and resource utilization The purpose of using it, but its treatment ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G5/027F23G5/04F23G5/44
CPCF23G5/027F23G5/04F23G5/44
Inventor 刘璐张安强任浩华肖磊吴道洪
Owner SHENWU TECH GRP CO LTD