Solid waste treatment device and method using cement kiln

Abstract

The invention relates to a solid waste treatment device and a solid waste treatment method using a cement kiln. The method comprises the following steps: screening household garbage to obtain usable substances; natural air-drying: placing the usable objects on an outdoor air-drying rack for natural air-drying; a collecting box is placed below the outdoor airing rack to collect liquid; and then separating the liquid by using an impurity filter and an oil-water separator to obtain microbial water, fermenting the microbial water to obtain biogas, crushing the air-dried household garbage to obtain comburent, and enabling the biogas and the comburent to be used for combustion in a cement kiln. Therefore, the technical effects that the energy supply capacity of the household garbage to the cement kiln is improved, and the energy utilization rate is increased are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to a solid waste treatment method utilizing a cement kiln. Background Art

[0002] At present, using cement kilns to treat solid waste is a common and highly recommended method. Solid waste is involved in the cement production process in various forms, among which high calorific value organic waste is used as an alternative fuel for cement production, and low calorific value inorganic mineral material waste is used as an alternative raw material for cement production;

[0003] When domestic waste is processed, solid waste accounts for the majority, of course, it is still in a state of large-scale landfill. When using cement kilns for treatment, most of the domestic waste will be pre-dried and then used as a fuel. During this period, the meat, water, etc. in the domestic waste lose the possibility of fermentation during the drying process, thereby reducing the production of biogas and further reducing the utilization rate of energy in the domestic waste. Summary of the invention

[0004] The purpose of the present invention is to provide a solid waste treatment device and method using a cement kiln in order to solve the above-mentioned problems. The device and method obtain combustion products by natural air drying and collect microbial water during the drying process to obtain biogas by fermentation, thereby achieving the technical effect of improving the energy supply capacity of cement kilns by domestic waste and improving energy utilization.

[0005] To achieve the above effects, the present invention is implemented through the following technical solutions:

[0006] A solid waste treatment device using a cement kiln, the treatment device comprising: an automated sorting line, an outdoor drying rack, a collecting box, an impurity filter and an oil-water separator, a fermentation tank and a crusher, the automated sorting line is used to sort domestic waste, and transfer the sorted waste to the outdoor drying rack for natural air drying, the collecting box is arranged below the outdoor drying rack and is used to collect liquid dripping from the domestic waste on the outdoor drying rack, the collecting box is connected to the fermentation tank via an impurity filter and an oil-water separator, the impurity filter and the oil-water separator separate the liquid in the collecting box from "oil, microbial water, and impurities", and then transfers the obtained microbial water to the fermentation tank for fermentation, the biogas generated after fermentation in the fermentation tank is used to be introduced into the cement kiln to improve the combustion capacity; the domestic waste naturally air-dried on the outdoor drying rack is crushed by the crusher and then put into the cement kiln for use as fuel.

[0007] A solid waste treatment method using a cement kiln, the method using the above-mentioned treatment device, comprises the following steps:

[0008] Step S1, screening: using an automated sorting line to screen the domestic waste to obtain usable materials;

[0009] Step S2, natural air drying and liquid collection: placing the usable items on an outdoor drying rack for drying, and installing a sunshade above the outdoor drying rack; placing a collection box under the outdoor drying rack to collect the liquid dripping from the outdoor drying rack;

[0010] Step S3, separation: using impurity filtration and an oil-water separator to separate the liquid collected in the collection box into "oil, microbial water, and impurities" to obtain microbial water;

[0011] Step S4, fermentation: putting microbial water into a fermentation tank, wherein the microbial water accounts for 60% of the internal volume of the fermentation tank, controlling the fermentation temperature to 51° C. and the fermentation time to 28 days, performing fermentation to obtain biogas, and introducing the biogas into a cement kiln for use as fuel gas;

[0012] Step S5, crushing: crushing the usable material that is naturally air-dried on the outdoor drying rack in step S2 using a crusher after air-drying to obtain a combustible material;

[0013] Step S6: putting the combustible material into the cement kiln for burning as fuel.

[0014] In step S2, within 1-4 days, the usable materials are stacked on the outdoor drying rack (2), which makes it easier to ferment and produce liquid. After 4 days, the usable materials on the outdoor drying rack (2) are spread out to accelerate the natural drying speed of the usable materials.

[0015] In step S2, an insect catching structure is installed on the outdoor drying rack; the insect catching structure includes an insect attracting lamp installed around the outdoor drying rack, an atomizer, and a net bag arranged around the outdoor drying rack, and the output end of the atomizer faces the insect attracting lamp;

[0016] Among them, the atomizer is loaded with insecticide liquid;

[0017] The atomizer sprays the insecticide in the form of water mist onto the insects attracted by the insect attracting lamp, and the dead insect bodies are collected on the net bag.

[0018] The insect catching structure also includes a turning assembly;

[0019] The turning assembly includes a turning machine and a timer, the turning end of the turning machine is equipped with a mounting frame, and the mounting frame is installed under the net bag;

[0020] The timer is used to control the turning machine to turn over at a fixed time, and then drive the net bag to turn over through the installation frame; after the net bag turns over, the insect body corpses are poured onto the outdoor drying rack.

[0021] The turning machine drives the net bag to turn over every 20 minutes.

[0022] The specific ingredients of the insecticide are: deltamethrin, carbaryl and thiamethoxam.

[0023] The mass ratio of the cypermethrin, such as carbaryl and thiamethoxam is 1:1:1.

[0024] A deodorizing structure is placed on the ground around the outdoor drying rack in step S2;

[0025] The deodorizing structure comprises an odor absorbing box placed around the outdoor drying rack, wherein activated carbon, bamboo charcoal and zeolite are placed in the odor absorbing box.

[0026] The mass ratio of the activated carbon, bamboo charcoal and zeolite is 1:0.5:0.5.

[0027] The beneficial effects of the present invention are:

[0028] By utilizing the natural air drying of domestic waste to enhance the combustion degree of domestic waste, and collecting, filtering and fermenting the microbial water containing organic matter generated by domestic waste during natural air drying, biogas is obtained, thereby achieving the effect of improving the energy supply capacity of domestic waste cement kilns and improving energy utilization rate;

[0029] By killing and collecting the fruit flies, flies, cockroaches and centipedes attracted during the natural air drying of domestic waste, the insect-catching structure can enhance the combustion capacity of subsequent domestic waste by using the bodies of fruit flies, flies, cockroaches and centipedes, and minimize the interference of fruit flies, flies, cockroaches and centipedes to the staff during the natural air drying of domestic waste;

[0030] By using activated carbon, bamboo charcoal and zeolite to absorb odors generated during the natural drying process of domestic waste, the spread of odors is avoided as much as possible, which helps to maintain the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the processing device of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of the structure of an outdoor drying rack and its related parts;

[0033] Figure 3 for Figure 1 Schematic diagram of the insect-catching structure and flipping structure.

[0034] in:

[0035] 1-Automated sorting line; 2-Outdoor drying rack; 3-Sunshade; 4-Collection box; 5-Impurity filter and oil-water separator; 6-Fermentation tank; 7-Crusher; 8-Cement kiln; 9-Insect attracting lamp; 10-Atomizer; 11-Net bag; 12-Turning machine; 13-Timer; 14-Installation frame; 15-Odor absorption box. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0037] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0038] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details to obscure the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0039] Reference Figure 1The present invention first provides a solid waste treatment mechanism using a cement kiln, the treatment mechanism comprising: an automated sorting line 1, an outdoor drying rack 2, a collecting box 4, an impurity filter and oil-water separator 5, a fermentation tank 6 and a crusher 7, the automated sorting line is used to sort domestic waste, and transfer the sorted waste to the outdoor drying rack 2 for natural air drying, the collecting box 4 is arranged below the outdoor drying rack 2 and is used to collect liquid dripping from the domestic waste on the outdoor drying rack, the collecting box 4 is connected to the fermentation tank 6 through the impurity filter and oil-water separator 5, the impurity filter and oil-water separator 5 separates "oil, microbial water, and impurities" from the liquid in the collecting box 4 to obtain microbial water and transfer it to the fermentation tank 6 for fermentation, and the biogas generated after fermentation in the fermentation tank 6 is used to be introduced into the cement kiln to improve the combustion capacity; the domestic waste that has been naturally air-dried on the outdoor drying rack 2 is crushed by the crusher 7 to obtain a combustible, and the combustible is sent to the cement kiln for use as fuel.

[0040] The present invention also provides a solid waste treatment method using a cement kiln, the method using the above device, comprising the following steps:

[0041] Step S1, screening: using the automated sorting line 1 to screen the domestic waste, wherein the automated sorting line 1 specifically includes: gravity sorting, magnetic sorting, photoelectric sorting and manual sorting. It should be noted that gravity sorting, magnetic sorting and photoelectric sorting are all existing technologies. Manual sorting is: picking out non-combustibles in the domestic waste by human hand-eye coordination, such as glass products, metal products, ceramic products, small electrical appliances, and finally obtaining usable objects;

[0042] According to step S1, it should be supplemented that glass products specifically include: glass bottles, glass cups, etc.; metal products specifically include: pots, pans, metal cans, etc.; small electrical appliances specifically include irons, hair dryers, rice cookers, etc.; among them, small electrical appliances contain combustible parts inside, which can be disassembled and burned;

[0043] Step S2, natural air drying and liquid collection;

[0044] Natural air drying: Place the usable items on the outdoor drying rack 2 for drying, and install a sunshade 3 above the outdoor drying rack 2. The sunshade 3 needs to be ventilated. The usable items on the outdoor drying rack 2 are stacked for 1-4 days. In this way, fruits, vegetables and meat wrapped in domestic garbage are more likely to ferment and produce fermentation liquid. After 4 days, the usable items on the outdoor drying rack 2 are flattened to accelerate the natural air drying speed of the usable items.

[0045] In step S2, an insect catching structure is installed on the outdoor drying rack 2, and the insect catching structure includes an insect attracting lamp 9 installed around the outdoor drying rack 2, an atomizer 10, and a net bag 11 arranged around the outdoor drying rack 2, and the output end of the atomizer 10 faces the insect attracting lamp 9, wherein the atomizer 10 is loaded with an insecticide, and the specific components of the insecticide loaded in the atomizer 10 are: cypermethrin, such as carbaryl, and thiamethoxam, and the mass ratio of cypermethrin, such as carbaryl, and thiamethoxam is 1:1:1, and the insect attracting lamp 9 is used to attract fruit flies, flies, cockroaches, and centipedes, and the insecticide in the atomizer 10 is sprayed in the form of water mist to kill the attracted fruit flies, flies, cockroaches, and centipedes, so that the bodies of the fruit flies, flies, cockroaches, and centipedes fall on the net bag 11 for collection;

[0046] The insect catching structure also includes a turning assembly, which includes a turning machine 12 and a timer 13. The turning end of the turning machine 12 is installed with a mounting frame 14, the net bag 11 is installed on the mounting frame 14, and the timer 13 is installed on the body of the turning machine 12. The turning end of the turning machine 12 is controlled by the timer 13 to drive the net bag 11 to turn over every 20 minutes, and the bodies of fruit flies, flies, cockroaches and centipedes collected on the net bag 11 are poured onto the outdoor drying rack 2. In the above manner, the collected bodies of fruit flies, flies, cockroaches and centipedes are intermittently separated from the net bag 11, and the accumulation of a large number of collected bodies of fruit flies, flies, cockroaches and centipedes is avoided as much as possible, and the water mist insecticide causes the bodies to remain wet continuously;

[0047] According to the above technical solution, it can be explained that the insect-catching structure can enhance the combustion capacity of subsequent domestic waste by catching the bodies of fruit flies, flies, cockroaches and centipedes, and minimize the interference of fruit flies, flies, cockroaches and centipedes to workers when the domestic waste is naturally dried;

[0048] In step S2, a deodorizing structure is placed on the ground around the outdoor drying rack 2, and the deodorizing structure includes an odor absorbing box 15 placed around the outdoor drying rack 2, wherein the odor absorbing box 15 is provided with a plurality of displacement holes for the circulation of air inside and outside the odor absorbing box 15, and activated carbon, bamboo charcoal, and zeolite are placed in the odor absorbing box 15, and the mass ratio of activated carbon, bamboo charcoal, and zeolite is 1:0.5:0.5;

[0049] Liquid collection: a collection box 4 is placed under the outdoor drying rack 2 to collect the liquid dripping from the outdoor drying rack 2;

[0050] Step S3, separation: using impurity filtration and oil-water separator 5 to separate “oil, microbial water, impurities” from the liquid to obtain microbial water, wherein the microbial water is the fermentation liquid produced by fermentation of animals and plants in domestic waste, and the fermentation liquid contains organic matter, which mainly comes from the decomposition process of biological macromolecules such as protein, fat, carbohydrates, etc. in animal carcasses and plants;

[0051] Step S4, fermentation: putting microbial water into the fermentation tank 6, the microbial water accounts for 60% of the internal volume of the fermentation tank 6, controlling the fermentation temperature to 51° C. and the fermentation time to 28 days, fermenting to obtain biogas, and passing the biogas into the cement kiln 8 to improve the combustion energy supply capacity of domestic waste;

[0052] Step S5, crushing: crushing the usable material naturally dried on the outdoor drying rack 2 in step S2 using a crusher 7 to obtain a combustible material;

[0053] Step S6: putting the combustible material into the cement kiln 8 and burning it as fuel.

[0054] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A solid waste treatment device using a cement kiln, characterized in that: The processing device comprises: an automatic sorting line (1), an outdoor drying rack (2), a collecting box (4), an impurity filter and oil-water separator (5), a fermentation tank (6) and a crusher (7). The automatic sorting line (1) is used to sort domestic waste and transfer the sorted waste to the outdoor drying rack (2) for natural air drying. The collecting box (4) is arranged below the outdoor drying rack and is used to collect liquid dripping from the domestic waste on the outdoor drying rack (2). The collecting box (4) is connected to the fermentation tank (6) through the impurity filter and oil-water separator (5). The impurity filter and oil-water separator (5) separates the liquid in the collecting box (4) into "oil, microbial water and impurities" and then transfers the obtained microbial water to the fermentation tank (6) for fermentation. The biogas generated after fermentation in the fermentation tank (6) is used to be introduced into a cement kiln to improve the combustion capacity. The domestic waste on the outdoor drying rack (2) that has been naturally air-dried is crushed by the crusher (7) and then put into the cement kiln (8) for use as fuel.

2. A method for treating solid waste using a cement kiln, the method using the treatment device according to claim 1, characterized in that: The following steps are involved: Step S1, screening: using the automated sorting line (1) to screen the domestic waste to obtain usable materials; Step S2, natural air drying and liquid collection: placing the usable items on an outdoor drying rack (2) for drying, and installing a sunshade (3) above the outdoor drying rack (2); placing a collection box (4) below the outdoor drying rack (2) to collect liquid dripping from the outdoor drying rack (2); Step S3, separation: using impurity filtration and an oil-water separator (5) to separate the "oil, microbial water, and impurities" in the liquid collected in the collection box (4) to obtain microbial water; Step S4, fermentation: putting microbial water into a fermentation tank (6), wherein the microbial water accounts for 60% of the internal volume of the fermentation tank (6), controlling the fermentation temperature to 51° C. and the fermentation time to 28 days, performing fermentation to obtain biogas, and introducing the biogas into a cement kiln (8) for use as fuel gas; Step S5, crushing: crushing the usable material that is naturally air-dried on the outdoor drying rack (2) in step S2 after air-drying using a crusher (7) to obtain a combustible material; Step S6: putting the combustion products into the cement kiln (8) for burning as fuel.

3. The solid waste treatment method using a cement kiln according to claim 2, characterized in that: In step S2, within 1-4 days, the usable materials are stacked on the outdoor drying rack (2), which makes it easier to ferment and produce liquid. After 4 days, the usable materials on the outdoor drying rack (2) are spread out to accelerate the natural drying speed of the usable materials.

4. The solid waste treatment method using a cement kiln according to claim 2, characterized in that: In step S2, an insect catching structure is installed on the outdoor drying rack (2); the insect catching structure comprises an insect attracting lamp (9) installed around the outdoor drying rack (2), an atomizer (10), and a net bag (11) arranged around the outdoor drying rack (2), and the output end of the atomizer (10) faces the insect attracting lamp (9); Wherein, the atomizer (10) is loaded with insecticide liquid; The atomizer (10) sprays the insecticide in the form of water mist onto the insects attracted by the insect attracting lamp (9), and the dead bodies of the insects are collected on the net bag (11).

5. The solid waste treatment method using a cement kiln according to claim 4, characterized in that: The insect catching structure also includes a turning assembly; The turning assembly comprises a turning machine (12) and a timer (13); a mounting frame (14) is mounted on the turning end of the turning machine (12); and the mounting frame (14) is mounted below the net bag (11); The timer (13) is used to control the turning machine (12) to turn over at a fixed time, thereby driving the net bag (11) to turn over through the mounting frame; after the net bag (11) turns over, the dead insect bodies are poured onto an outdoor drying rack.

6. The solid waste treatment method using a cement kiln according to claim 5, characterized in that: The turning machine (12) drives the net bag (11) to turn over every 20 minutes.

7. The solid waste treatment method using a cement kiln according to claim 5, characterized in that: The specific ingredients of the insecticide are: deltamethrin, carbaryl and thiamethoxam.

8. The solid waste treatment method using a cement kiln according to claim 7, characterized in that: The mass ratio of the cypermethrin, such as carbaryl and thiamethoxam is 1:1:

1.

9. The solid waste treatment method using a cement kiln according to claim 5, characterized in that: A deodorizing structure is placed on the ground around the outdoor drying rack (2) in step S2; The deodorizing structure comprises an odor absorbing box (15) placed around the outdoor drying rack (2), wherein activated carbon, bamboo charcoal and zeolite are placed in the odor absorbing box (15).

10. A solid waste treatment method using a cement kiln according to claim 9, characterized in that: The mass ratio of the activated carbon, bamboo charcoal and zeolite is 1:0.5:0.5.

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