CN216911504U

CN216911504U - Domestic waste degradation recycling equipment

Info

Publication number: CN216911504U
Application number: CN202220245106.8U
Authority: CN
Inventors: 程洪斌; 王蕾
Original assignee: Shaoxing Weisu Technology Co ltd
Current assignee: Shaoxing Weisu Technology Co ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-07-08
Anticipated expiration: 2032-01-29

Abstract

A household garbage degradation recycling device relates to the technical field of biomass resource application. The liquid outlet of the pretreatment reaction tank is connected with the fermentation reaction tank through a liquid conveying pipeline, a slag discharging port of the pretreatment reaction tank is connected with a first solid slag tank, the liquid outlet of the fermentation reaction tank is connected with the separation tower, the slag discharging port of the fermentation reaction tank is connected with a second solid slag tank, the first solid slag tank is connected with the second solid slag tank through a slag conveying device, the second solid slag tank is connected with the collection tank, the liquid outlet of the separation tower is connected with the collection tower, and a waste discharging port of the separation tower is connected with the pretreatment reaction tank. Through the biomass chemical technology, the biomass resources in the household garbage are recycled, degraded and reused to produce ethanol and degradable plastics, and meanwhile, acid and alkaline waste residues and liquid generated in industrial production are introduced into the technology for preparing ethanol from the household garbage to be used as a catalyst and a supplementary raw material, so that the effects of environmental protection treatment and circular economy are realized.

Description

Domestic waste degradation recycling equipment

Technical Field

The utility model relates to a household garbage degradation recycling device, and relates to the technical field of biomass resource application.

Background

The municipal solid waste treatment mainly adopts methods of landfill, composting, incineration and the like, wherein the landfill technology occupies large area; the composting technology has the defects of volume reduction, decrement and low harmless degree; the waste incineration technology is adopted, the reduction degree is high, but the investment is huge.

The traditional garbage disposal methods all have respective advantages and disadvantages, but meanwhile, because the garbage is not well classified, a garbage operation method of mixed collection is often used, so that secondary pollution is often generated to water and soil resources during garbage disposal, and the disposal cost of the garbage is high, most of the current urban domestic garbage disposal methods directly enter the final burning and landfill links without detailed classification and decrement treatment, so that the ecological environment is easily seriously polluted, and serious resource waste is caused. In order to improve the recycling effect of the domestic garbage and reduce the pollution caused in the garbage treatment process, the method for extracting and utilizing the biomass resources in the domestic garbage is adopted in the prior art, ethanol, xylose and lignin can be produced, but the biomass raw materials which can be treated by the method are single, the treatment difficulty is continuously increased when the urban domestic garbage is faced with more and more complex urban domestic garbage, the treatment efficiency is continuously reduced, and the value generated by the method is not in direct proportion to the investment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide domestic garbage degradation recycling equipment aiming at the defects or shortcomings in the prior art, and a waste-free recycling technology can be designed according to the environmental characteristics of different refuse landfills in a customized manner, so that the recycling rate of the domestic garbage can be greatly improved, products with higher added values can be produced, and the effect of turning waste into wealth is really realized.

In order to achieve the purpose, the utility model adopts the following technical scheme: the device comprises a pretreatment reaction tank 3, a fermentation reaction tank 4, a first solid residue tank 5, a second solid residue tank 6, a separation tower 7, a collection tower 8 and a collection tank 9, wherein a liquid outlet of the pretreatment reaction tank 3 is connected with the fermentation reaction tank 4 through a liquid conveying pipeline 11, a residue discharging port of the pretreatment reaction tank 3 is connected with the first solid residue tank 5, a liquid outlet of the fermentation reaction tank 4 is connected with the separation tower 7, a residue discharging port of the fermentation reaction tank 4 is connected with the second solid residue tank 6, the first solid residue tank 5 is connected with the second solid residue tank 6 through a residue conveying device 12, the second solid residue tank 6 is connected with the collection tank 9, a liquid outlet of the separation tower 7 is connected with the collection tower 8, and a waste discharging port of the separation tower 7 is connected with the pretreatment reaction tank 3.

The pretreatment reaction tank 3 comprises ultrasonic treatment equipment, a weak base or weak acid catalyst and microbial degradation equipment.

The fermentation reaction tank 4 is an enzyme hydrolysis fermentation reaction tank.

The first solid slag pool 5 is a plastic slag pool.

The second solid slag pool 6 is a byproduct slag settling pool.

The collecting tower 8 is an ethanol collecting tower.

The working principle of the utility model is as follows: domestic waste carries out simple categorised recovery in categorised recovery plant 1 to transport to raw materials storage yard 2, regard categorised domestic waste and the alkaline waste residue waste liquid that contains cellulose as the raw materials, transport to preliminary treatment reaction tank 3 through raw materials conveying equipment 10 in the raw materials storage yard 2, adopt corresponding preliminary treatment scheme to different types of rubbish: the method comprises the following steps of (1) degrading through ultrasonic waves, a weak base or weak acid catalyst and microorganisms, wherein near-critical water is adopted for composite pretreatment in the pretreatment process, so that the wood fiber raw materials in the household garbage are decomposed into liquefied or liquid biomass cellulose, hemicellulose and lignin, residues can be generated in the pretreatment process, the main components of the solid residues are plastics and a small amount of inorganic matters such as enriched salts and dust, the residues are conveyed to a first solid residue pool 5, the plastic residues are left for purification to generate plastic products, and the inorganic matter residues such as enriched salts and dust are conveyed to a second solid residue pool 6; conveying liquefied or liquid biomass cellulose, hemicellulose and lignin to a fermentation reaction tank 4, carrying out enzyme hydrolysis in the fermentation reaction tank 4, mainly aiming at hydrolyzing the cellulose into monosaccharide, synchronously saccharifying the fermentation sugar into alcohol, fermenting the alcohol to generate ethanol, adding lactobacillus and/or saccharomycetes in different batches at the middle, middle and later stages of the fermentation process so as to adjust the production ratio of the ethanol and the lactic acid and achieve the optimal recycling effect of simultaneously producing the ethanol and the lactic acid, finally generating ethanol mixed liquor and polylactic acid in the fermentation reaction tank 4, namely ethanol mixed liquor and degradable bioplastic, conveying the ethanol mixed liquor to a separation tower 7 for rectification to obtain ethanol and waste liquor, collecting the ethanol to a collection tower 8, recovering the waste liquor to a pretreatment reaction tank 3, separating the polylactic acid and the ethanol mixed liquor generated in the fermentation reaction tank 4 and then conveying the separated ethanol mixed liquor to a second solid residue tank 6, adding low-cost intermediate raw materials, generating high value-added biofuel and chemicals through liquid phase catalysis, and uniformly recovering the biofuel and the chemicals to the collecting tank 9.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic of the structural framework of the present invention;

FIG. 2 is a schematic process flow diagram of the present invention.

Description of reference numerals: the system comprises a class recovery device 1, a raw material storage yard 2, a pretreatment reaction tank 3, a fermentation reaction tank 4, a first solid residue tank 5, a second solid residue tank 6, a separation tower 7, a collection tower 8, a collection tank 9, a raw material conveying device 10, a liquid conveying pipeline 11 and a residue conveying device 12.

Detailed Description

Referring to fig. 1 to 2, the technical solution adopted by the present embodiment is: a domestic garbage degradation recycling device comprises a pretreatment reaction tank 3, a fermentation reaction tank 4, a first solid residue tank 5, a second solid residue tank 6, a separation tower 7, a collection tower 8 and a collection tank 9, wherein a liquid outlet of the pretreatment reaction tank 3 is connected with the fermentation reaction tank 4 through a liquid conveying pipeline 11, a residue discharging port of the pretreatment reaction tank 3 is connected with the first solid residue tank 5, a liquid outlet of the fermentation reaction tank 4 is connected with the separation tower 7, a residue discharging port of the fermentation reaction tank 4 is connected with the second solid residue tank 6, the first solid residue tank 5 is connected with the second solid residue tank 6 through a residue conveying device 12, the second solid residue tank 6 is connected with the collection tank 9, a liquid outlet of the separation tower 7 is connected with the collection tower 8, and a waste discharging port of the separation tower 7 is connected with the pretreatment reaction tank 3.

Further, the pretreatment reaction tank 3 comprises an ultrasonic treatment device, a weak base or weak acid catalyst and a microbial degradation device.

Further, the fermentation reaction tank 4 is an enzymatic hydrolysis fermentation reaction tank.

Further, the first solid slag pool 5 is a plastic slag material pool, and the second solid slag pool 6 is a byproduct slag settling pool.

Further, the collecting tower 8 is an ethanol collecting tower.

A household garbage degradation recycling process comprises the following steps:

step one, simply classifying and recycling the household garbage in a classification recycling device 1, and conveying the household garbage to a raw material storage yard 2;

step two, classified household garbage and alkaline waste residue and waste liquid containing cellulose are taken as raw materials and are conveyed to a pretreatment reaction tank 3 from a raw material storage yard 2 through a raw material conveying device 10, and corresponding pretreatment schemes are adopted for different types of garbage: ultrasonic wave, weak base or weak acid catalyst, microbial degradation, and near-critical water composite pretreatment is adopted in the pretreatment process, so that the wood fiber raw material in the household garbage is decomposed into cellulose, hemicellulose and lignin;

conveying liquid cellulose, hemicellulose and lignin to a fermentation reaction tank 4 through a liquid conveying pipeline 11, wherein the main components of the residual solid residues are plastics and inorganic substance sediments such as some enriched salts and dust, the plastic sediments are conveyed to a first solid residue tank 5, and the inorganic substance sediments such as the enriched salts and dust are conveyed to a second solid residue tank 6 through residue conveying equipment 12, wherein the enriched salts and the inorganic substance sediments such as the dust are used as raw materials for producing building materials;

performing enzyme hydrolysis in the fermentation reaction tank 4, and synchronously saccharifying and fermenting the sugar into alcohol;

step five, adding lactic acid bacteria and/or yeast in different batches at the early, middle and later stages of the fermentation process according to the requirement of the by-product, so as to adjust the production ratio of the ethanol and the lactic acid, and achieve the optimal recycling effect of simultaneously producing the ethanol and the lactic acid;

step six, finally generating ethanol mixed liquor and polylactic acid in the fermentation reaction tank 4, namely the ethanol mixed liquor and the degradable bioplastic, conveying the ethanol mixed liquor to a separation tower 7 for rectification to obtain ethanol and waste liquor, collecting the ethanol to a collection tower 8, and recovering the waste liquor to the pretreatment reaction tank 3;

step seven, separating the mixed solution of polylactic acid and ethanol generated in the fermentation reaction tank 4, conveying the separated mixed solution to a second solid residue tank 6, adding low-cost intermediate raw materials, generating high-added-value biological fuels and chemicals through liquid phase catalysis, and uniformly recovering the biological fuels and chemicals to a collection tank 9;

and step eight, simply purifying the plastic raw materials in the first solid slag pool 5 to generate the plastic products.

After the technical scheme is adopted, the utility model has the beneficial effects that: through the biomass chemical technology, the biomass resources in the household garbage are recycled, degraded and reused to produce ethanol and degradable plastics, and meanwhile, acid and alkaline waste residues and liquid generated in industrial production are introduced into the technology for preparing ethanol from the household garbage to be used as a catalyst and a supplementary raw material, so that the effects of environmental protection treatment and circular economy are realized.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a domestic waste degradation recycling equipment which characterized in that: it comprises a pretreatment reaction tank (3), a fermentation reaction tank (4), a first solid residue tank (5), a second solid residue tank (6), a separation tower (7), a collection tower (8) and a collection tank (9), the liquid outlet of the pretreatment reaction tank (3) is connected with the fermentation reaction tank (4) through a liquid conveying pipeline (11), the slag discharging port of the pretreatment reaction tank (3) is connected with a first solid slag tank (5), the liquid outlet of the fermentation reaction tank (4) is connected with a separation tower (7), the slag discharging port of the fermentation reaction tank (4) is connected with a second solid slag tank (6), the first solid slag tank (5) is connected with the second solid slag tank (6) through a residue conveying device (12), the second solid slag tank (6) is connected with a collection tank (9), the liquid outlet of the separation tower (7) is connected with a collection tower (8), and the waste discharging port of the separation tower (7) is connected with the pretreatment reaction tank (3).

2. The domestic waste degradation recycling apparatus of claim 1, wherein: the pretreatment reaction tank (3) comprises ultrasonic treatment equipment, a weak base or weak acid catalyst and microbial degradation equipment.

3. The domestic waste degradation recycling apparatus of claim 1, wherein: the fermentation reaction tank (4) is an enzyme hydrolysis fermentation reaction tank.

4. The domestic waste degradation recycling apparatus of claim 1, wherein: the first solid slag pool (5) is a plastic slag pool.

5. The domestic waste degradation recycling apparatus of claim 1, wherein: the second solid slag pool (6) is a byproduct slag settling pool.

6. The domestic waste degradation recycling apparatus of claim 1, wherein: the collecting tower (8) is an ethanol collecting tower.