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System and method for recycling urban household kitchen waste

A technology for kitchen waste and residents, applied in the field of kitchen waste recycling system for urban residents

Active Publication Date: 2019-11-26
程建中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few technological methods and enterprises for the unified collection, transportation and treatment of urban household kitchen waste.

Method used

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  • System and method for recycling urban household kitchen waste
  • System and method for recycling urban household kitchen waste
  • System and method for recycling urban household kitchen waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] like figure 1 The shown kitchen waste recycling system for urban residents includes a first sealed shaftless screw conveyor 15-1, a rotary drum dryer 1, a screw mixing conveyor 2, Drum composter 3, bucket elevator 4, compost tower 5, second sealed shaftless screw conveyor 15-2, primary screening machine 6, belt conveyor 7, mixing mixer 8, third sealed shaftless screw conveyor Shaft screw conveyor 15-3, granulator 9, secondary screening machine 10, fourth sealed shaftless screw conveyor 15-4, particle dryer 11, tertiary screening machine 12 and product packaging machine 13; The outlets of the screening machine 6, the secondary screening machine 10 and the third screening machine 12 all include an oversize outlet and an undersize outlet; the undersize outlet of the primary screening machine 6 passes through the pipeline and the belt conveyor 7 The undersize outlet of the secondary screening machine 10 is connected to the fourth sealed shaftless screw conveyor 15-4 throug...

Embodiment 2

[0129] combine figure 1 In this embodiment, the method for recycling urban household kitchen waste by using the system as described in Embodiment 1 includes the following steps:

[0130] Step 1. The biogas residue obtained after anaerobic fermentation of household kitchen waste of urban residents is transported to the drum dryer 1 by the first sealed shaftless screw conveyor 15-1, and then dried to the drum dryer. A high-temperature airflow with a temperature of 500°C is introduced into the machine 1, and the high-temperature airflow is in reverse contact with the biogas residue to obtain a slurry material; the moisture content of the biogas residue is 83%; the material temperature of the slurry material is 56°C , the moisture content is 67%;

[0131] The specific process of obtaining biogas residues after anaerobic fermentation of household kitchen waste of urban residents described in this embodiment is as follows: First, the kitchen waste of urban households is put into th...

Embodiment 3

[0142] combine figure 1 In this embodiment, the method for recycling urban household kitchen waste by using the system as described in Embodiment 1 includes the following steps:

[0143] Step 1. The biogas residue obtained after anaerobic fermentation of household kitchen waste of urban residents is transported to the drum dryer 1 by the first sealed shaftless screw conveyor 15-1, and then dried to the drum dryer. A high-temperature airflow with a temperature of 800°C is introduced into the machine 1, and the high-temperature airflow is in reverse contact with the biogas residue to obtain a slurry material; the moisture content of the biogas residue is 85%; the material temperature of the slurry material is 60°C , with a moisture content of 70%;

[0144] The specific process of obtaining biogas residues after anaerobic fermentation of household kitchen waste of urban residents described in this embodiment is as follows: First, the kitchen waste of urban households is put into...

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Abstract

The invention provides an urban resident household kitchen garbage cyclic utilization system which comprises a dryer, a spiral stirring conveyor, a composting machine, a bucket elevator, a composting tower, a primary screening machine, a belt conveyor , a mixing agitator, a pelletizer, a secondary screening machine, a particle dryer, a tertiary screening machine and a product packaging machine, wherein a siftage outlet of the primary screening machine is connected with the belt conveyor; a siftage outlet of the secondary screening machine is connected with a sealed shaftless screw conveyer; an oversize outlet of the third screening machine is connected with the product packaging machine; an oversize outlet of the primary screening machine is connected with the bucket elevator; and an oversize outlet of the secondary screening machine and a siftage outlet of the third screening machine are connected with the mixing agitator. The invention further provides an urban resident household kitchen garbage cyclic utilization method. The system is clean and environmentally friendly and high in resource utilization degree, can generate various resources including electricity, heat and organic fertilizer and has high comprehensive utilization benefit.

Description

technical field [0001] The invention belongs to the technical field of recycling of kitchen waste, and in particular relates to a system and method for recycling kitchen waste of urban residents. Background technique [0002] With the improvement of residents' living consumption level, changes in energy structure and eating habits, the proportion of kitchen waste in domestic waste has increased year by year. The proportion is 41% to 63.8%. Kitchen waste has the characteristics of high moisture content and low calorific value. If it is not properly treated and utilized for landfill, it will occupy a large amount of landfill capacity and produce secondary pollution such as leachate and stench. Since the wet basis calorific value of kitchen waste is low, only about 2100kJ / kg, insufficient incineration treatment will produce harmful gases such as dioxins. [0003] Sorting and treating kitchen waste at the source in the household unit can not only reduce the difficulty of colle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05F17/00C05F17/02F26B17/00F26B21/00F26B25/00
CPCC05C3/00C05C9/00C05F17/50C05F17/989F26B17/00F26B21/00F26B25/001F26B2200/04C05F9/04C05F11/00C05F11/08C05F5/002Y02E50/30Y02P20/129Y02W30/40
Inventor 程建中
Owner 程建中
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