Hazardous waste pretreatment system

Abstract

The utility model relates to the technical field of hazardous waste harmless treatment, in particular to a hazardous waste pretreatment system which comprises a pyrolysis module, feeding equipment, condensing equipment, an oil storage tank, conveying equipment and a compatibility aging module, the pyrolysis module is connected with the feeding equipment and is used for carrying out pyrolysis treatment on the hazardous waste raw materials to be processed; the condensing equipment is connected with the pyrolysis module; the oil storage tank is connected with condensing equipment; the conveying equipment is connected with the pyrolysis module; and the compatibility aging module is connected with the conveying equipment and is used for carrying out compatibility and aging treatment on the hazardous waste raw materials. By arranging the pyrolysis module and the condensing equipment, waste oil contained in the hazardous waste raw materials is recycled and used as fuel of the rotary kiln, and non-condensable gas generated in the pyrolysis process of the hazardous waste raw materials can be used as fuel gas of the pyrolysis equipment. The energy consumption cost in the hazardous waste harmless treatment process is greatly saved, and the defect that in the prior art, the hazardous waste harmless treatment cost is high is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of harmless treatment of hazardous wastes, in particular to a hazardous waste pretreatment system. Background Art

[0002] Hazardous waste refers to waste generated in production and life that is corrosive, toxic, flammable, reactive or infectious and may have harmful effects on the environment or human health. In the existing technology, hazardous waste is generally treated by high-temperature incineration in a rotary kiln. The fuel consumed by the rotary kiln in the process of incineration of hazardous waste is generally purchased liquefied natural gas, biomass and heavy oil as the main fuel source, which increases the cost of harmless treatment of hazardous waste. Utility Model Content

[0003] In order to solve the technical problem of high cost of harmless treatment of hazardous waste in the prior art, the embodiment of the present invention provides a hazardous waste pretreatment system, which includes: a pyrolysis module, a feeding device, a condensing device, an oil storage tank, a conveying device and a compatibility aging module;

[0004] The pyrolysis module is connected to the feeding equipment and is used for pyrolysis treatment of hazardous waste materials to be processed;

[0005] The condensation device is connected to the pyrolysis module;

[0006] The oil storage tank is connected to the condensing equipment;

[0007] The conveying device is connected to the pyrolysis module;

[0008] The compatibility and aging module is connected to the conveying equipment and is used for compatibility and aging of hazardous waste raw materials.

[0009] Furthermore, the pyrolysis module includes: a dehydration component and a pyrolysis device;

[0010] The dehydration component is connected to the feeding equipment and is used to dehydrate hazardous waste raw materials;

[0011] The pyrolysis equipment is connected to the dehydration component, the pyrolysis equipment is connected to the condensation equipment, and the pyrolysis equipment is connected to the conveying equipment, and is used to perform pyrolysis treatment on the dehydrated hazardous waste raw materials.

[0012] Furthermore, the input end of the condensing device is connected to the pyrolysis device, one of the output ends of the condensing device is connected to the oil storage tank, and the other output end of the condensing device is connected to the pyrolysis device.

[0013] Furthermore, the dehydration component includes: a dehydration device; one of the input ends of the dehydration device is connected to the feeding device, and one of the output ends of the dehydration device is connected to one of the input ends of the pyrolysis device, which is used to dehydrate the hazardous waste raw materials.

[0014] Furthermore, the dehydration assembly further comprises: a water tank and pumping equipment;

[0015] The water tank is connected to the other output end of the dehydration equipment and is used to store the aqueous solution output by the dehydration equipment;

[0016] The input end of the pumping device is connected to the water tank, and the output end of the pumping device is connected to another input end of the dehydration device, so as to input the aqueous solution stored in the water tank into the dehydration device.

[0017] Furthermore, the other input end of the pyrolysis equipment is connected to the feeding equipment for pyrolysis treatment of hazardous waste raw materials.

[0018] Furthermore, the compatibility and aging module includes: mixing equipment, several quantitative conveying devices and aging tanks;

[0019] The input end of the mixing equipment is connected to the conveying equipment and is used to stir and mix the hazardous waste raw materials;

[0020] The output ends of several quantitative conveying devices are connected to the input end of the mixing equipment, and are used to quantitatively transmit the compounding auxiliary materials to the mixing equipment;

[0021] The aging tank is connected to the output end of the mixing equipment and is used for aging hazardous waste raw materials.

[0022] Furthermore, the loading device is connected to the conveying device.

[0023] Furthermore, the system further comprises: a screening device, one of the input ends of the screening device is connected to the feeding device, and one of the output ends of the screening device is connected to the conveying device.

[0024] Furthermore, the system also includes: a crushing device, one of the input ends of the crushing device is connected to the feeding device, the other input end of the crushing device is connected to the other output end of the screening device, and the output end of the crushing device is connected to the other input end of the screening device.

[0025] According to the hazardous waste pretreatment system of the embodiment of the present invention, the following beneficial effects are achieved: the system recycles the waste oil contained in the sludge waste by setting up a pyrolysis module and a condensation device, and uses it as fuel for the rotary kiln. In addition, the non-condensable gas generated during the pyrolysis of the hazardous waste raw materials can be used as fuel gas for the pyrolysis equipment, which greatly saves the energy consumption cost in the harmless treatment of hazardous waste and solves the defect of high cost of harmless treatment of hazardous waste in the prior art.

[0026] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Flowchart according to an embodiment of the present invention.

[0028] Description of the accompanying drawings:

[0029] 111-dehydration equipment, 112-water tank, 113-pumping equipment, 12-pyrolysis equipment, 2-crushing equipment, 3-condensation equipment, 4-oil storage tank, 5-conveying equipment, 61-mixing equipment, 62-quantitative conveying device, 63-aging tank, 7-screening equipment. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to further illustrate the present invention.

[0031] The aforementioned and other technical aspects, features, and functions of the present invention will be more clearly understood in the following detailed description of the embodiments with reference to the accompanying drawings. Directional terms such as up, down, left, right, front, and back, used in the following embodiments, are merely references to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit the present invention. Furthermore, identical reference numerals throughout the embodiments denote identical components.

[0032] First, combine Figure 1 A hazardous waste pretreatment system according to an embodiment of the present invention is described, which is used to treat hazardous waste and has a wide range of application scenarios.

[0033] like Figure 1 As shown, the hazardous waste pretreatment system of the embodiment of the present invention includes: a pyrolysis module, a feeding device (not shown in the figure), a condensation device 3, an oil storage tank 4, a conveying device 5 and a compatibility aging module.

[0034] Specifically, if Figure 1 As shown, the pyrolysis module is connected to the feeding equipment, which is used for pyrolysis treatment of hazardous waste raw materials to be processed; the condensation equipment 3 is connected to the pyrolysis module, which is used to condense the gas generated during the pyrolysis treatment of hazardous waste raw materials by the pyrolysis module, and thus obtain waste oil and non-condensable gas; the oil storage tank 4 is connected to the condensation equipment 3, which is used to store waste oil; the conveying equipment 5 is connected to the pyrolysis module; the compatibility and aging module is connected to the conveying equipment 5, which is used to compatibly and age the hazardous waste raw materials.

[0035] Further, if Figure 1As shown, the pyrolysis module includes: a dehydration component and a pyrolysis device 12; the dehydration component is connected to the feeding equipment, which is used to dehydrate the hazardous waste raw materials; the pyrolysis equipment 12 is connected to the dehydration component, the pyrolysis equipment 12 is connected to the condensation equipment 3, and the pyrolysis equipment 12 is connected to the conveying equipment 5, which is used to pyrolyze the dehydrated hazardous waste raw materials.

[0036] Further, if Figure 1 As shown, the input end of the condensing device 3 is connected to the pyrolysis device 12 , one of the output ends of the condensing device 3 is connected to the oil storage tank 4 , and the other output end of the condensing device 3 is connected to the pyrolysis device 12 .

[0037] Further, if Figure 1 As shown, the dehydration component includes: a dehydration device 111; one of the input ends of the dehydration device 111 is connected to the feeding device, and one of the output ends of the dehydration device 111 is connected to one of the input ends of the pyrolysis device 12, which is used to dehydrate the hazardous waste raw materials.

[0038] Further, if Figure 1 As shown, the dehydration component also includes: a water tank 112 and a pumping device 113; the water tank 112 is connected to the other output end of the dehydration device 111, and is used to store the aqueous solution output by the dehydration device 111; the input end of the pumping device 113 is connected to the water tank 112, and the output end of the pumping device 113 is connected to the other input end of the dehydration device 111, and is used to input the aqueous solution stored in the water tank 112 into the dehydration device 111.

[0039] Further, if Figure 1 As shown, the other input end of the pyrolysis device 12 is connected to the feeding device for pyrolysis treatment of hazardous waste raw materials.

[0040] Example 1

[0041] In this embodiment, the feeding equipment puts the oily sludge waste with a water content ≥ 60% into the dehydration equipment 111 for dehydration treatment. The aqueous solution obtained during the dehydration process is output to the water tank 112 through one of the output ends of the dehydration equipment 111 for storage, so that before the subsequent dehydration equipment 111 dehydrates the oily sludge waste, the pumping equipment 113 extracts the aqueous solution stored in the water tank 112 and inputs it into the dehydration equipment 111. The dehydration equipment 111 is used to mix and stir the later added aqueous solution with the oily sludge waste; the oily sludge waste after dehydration treatment is output to the pyrolysis equipment 12 through the other output end of the dehydration equipment 111 for pyrolysis treatment.

[0042] The feeding equipment directly feeds the oily sludge waste with a water content of ≤60% and an oil content of ≥5% into the pyrolysis equipment 12 for pyrolysis treatment.

[0043] The gas generated during the pyrolysis process enters the condensing device 3 for cooling treatment. The waste oil and non-condensable gas obtained after the cooling treatment are output to the oil storage tank 4 through one of the output ends of the condensing device 3 for storage, so that the user can use it as fuel for the rotary kiln. The non-condensable gas is output to the pyrolysis device 12 through the other output end of the condensing device 3 for use as fuel gas. After the pyrolysis treatment of the oil sludge waste by the pyrolysis device 12 is completed, the waste gas and waste residue generated are output by the pyrolysis device 12 to the conveying device 5, and finally the conveying device 5 conveys the waste residue to the compatibility and aging module for compatibility treatment and aging treatment in sequence.

[0044] Further, if Figure 1 As shown, the compatibility and aging module includes: a mixing device 61, several quantitative conveying devices 62 and an aging tank 63; the input end of the mixing device 61 is connected to the conveying device 5, which is used to stir and mix the hazardous waste raw materials; the output ends of the several quantitative conveying devices 62 are all connected to the input end of the mixing device 61, which are used to quantitatively transmit the compatibility auxiliary materials to the mixing device 61, thereby compatibly treating the hazardous waste raw materials in the mixing device 61; the aging tank 63 is connected to the output end of the mixing device 61, which is used to store the hazardous waste raw materials mixed with the compatibility auxiliary materials so as to perform aging treatment on them; after the hazardous waste raw materials have been compatibly treated and aged, the user can first put them into the granulator for granulation, and then put them into the rotary kiln for sintering to ensure that the product particle size is uniform.

[0045] Further, if Figure 1 As shown, the loading device is connected to the conveying device 5.

[0046] Example 2

[0047] In this embodiment, the feeding equipment directly puts the oily sludge waste with a water content of ≤60% and an oil content of ≤5% into the conveying equipment 5, and the conveying equipment 5 conveys the oily sludge waste to the compatibility and aging module for compatibility treatment and aging treatment in sequence.

[0048] Further, if Figure 1 As shown, the system further comprises: a screening device 7 , one of the input ends of the screening device 7 is connected to the feeding device, and one of the output ends of the screening device 7 is connected to the conveying device 5 .

[0049] Further, if Figure 1 As shown, the system further includes: a crushing device 2, one of the input ends of the crushing device 2 is connected to the feeding device, the other input end of the crushing device 2 is connected to the other output end of the screening device 7, and the output end of the crushing device 2 is connected to the other input end of the screening device 7.

[0050] Example 3

[0051] In this embodiment, the feeding equipment puts the hazardous waste raw materials of solid waste and hazardous waste types into the screening equipment 7 for screening. For hazardous waste raw materials with a particle size ≥10mm, the screening equipment 7 outputs them to the crushing equipment 2 for crushing processing, and then the crushing equipment 2 outputs them to the screening equipment 7 for screening again. For hazardous waste raw materials with a particle size ≤10mm, the screening equipment 7 outputs them to the compatibility and aging module for compatibility processing and aging processing in sequence.

[0052] The feeding equipment puts the hazardous waste materials of the type of domestic waste incineration bottom ash into the crushing equipment 2 for crushing treatment. The crushing equipment 2 outputs the crushed hazardous waste materials to the screening equipment 7 for screening. For hazardous waste materials with a particle size ≥10mm, the screening equipment 7 outputs them to the crushing equipment 2 for crushing treatment, and then the crushing equipment 2 outputs them to the screening equipment 7 for screening again. For hazardous waste materials with a particle size ≤10mm, the screening equipment 7 outputs them to the compatibility and aging module for compatibility treatment and aging treatment in sequence.

[0053] Above, refer to Figure 1 The hazardous waste pretreatment system according to the embodiment of the utility model is described, which has the following beneficial effects: the system recycles the waste oil contained in the sludge waste by setting up a pyrolysis module and a condensation device, and uses it as fuel for the rotary kiln. In addition, the non-condensable gas generated during the pyrolysis of the hazardous waste raw materials can be used as fuel gas for the pyrolysis equipment, which greatly saves the energy consumption cost in the harmless treatment of hazardous waste and solves the defect of high cost of harmless treatment of hazardous waste in the prior art.

[0054] It should be noted that, in this specification, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the elements.

[0055] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A hazardous waste pretreatment system, characterized in that: Includes: pyrolysis module, feeding equipment, condensing equipment, oil storage tank, conveying equipment and compatibility aging module; The pyrolysis module is connected to the feeding equipment and is used for pyrolysis treatment of hazardous waste materials to be processed; The condensing device is connected to the pyrolysis module; The oil storage tank is connected to the condensing equipment; The conveying device is connected to the pyrolysis module; The compatibility and aging module is connected to the conveying equipment and is used to perform compatibility and aging treatment on the hazardous waste raw materials.

2. The hazardous waste pretreatment system according to claim 1, characterized in that: The pyrolysis module includes: a dehydration component and a pyrolysis device; The dehydration component is connected to the feeding equipment and is used to dehydrate the hazardous waste raw materials; The pyrolysis equipment is connected to the dehydration component, the pyrolysis equipment is connected to the condensation equipment, and the pyrolysis equipment is connected to the conveying equipment, and is used to perform pyrolysis treatment on the dehydrated hazardous waste raw materials.

3. The hazardous waste pretreatment system according to claim 2, characterized in that: The input end of the condensing device is connected to the pyrolysis device, one of the output ends of the condensing device is connected to the oil storage tank, and the other output end of the condensing device is connected to the pyrolysis device.

4. The hazardous waste pretreatment system according to claim 2, characterized in that: The dehydration component includes: a dehydration device, one of the input ends of the dehydration device is connected to the feeding device, and one of the output ends of the dehydration device is connected to one of the input ends of the pyrolysis device, which is used to dehydrate the hazardous waste raw materials.

5. The hazardous waste pretreatment system according to claim 4, characterized in that: The dehydration assembly further comprises: a water tank and a pumping device; The water tank is connected to the other output end of the dehydration device and is used to store the aqueous solution output by the dehydration device; The input end of the pumping device is connected to the water tank, and the output end of the pumping device is connected to another input end of the dehydration device, so as to input the aqueous solution stored in the water tank into the dehydration device.

6. The hazardous waste pretreatment system according to claim 2, characterized in that: The other input end of the pyrolysis equipment is connected to the feeding equipment for pyrolysis treatment of the hazardous waste raw materials.

7. The hazardous waste pretreatment system according to claim 1, characterized in that: The compatibility and aging module includes: mixing equipment, several quantitative conveying devices and an aging tank; The input end of the mixing device is connected to the conveying device for stirring and mixing the hazardous waste raw materials; The output ends of the plurality of quantitative conveying devices are all connected to the input end of the mixing equipment, and are used to quantitatively transmit the compounding auxiliary materials to the mixing equipment; The aging tank is connected to the output end of the mixing equipment and is used for aging the hazardous waste raw materials.

8. The hazardous waste pretreatment system according to claim 1, characterized in that: The feeding device is connected to the conveying device.

9. The hazardous waste pretreatment system according to claim 8, characterized in that: It also includes: a screening device, one of the input ends of the screening device is connected to the feeding device, and one of the output ends of the screening device is connected to the conveying device.

10. The hazardous waste pretreatment system according to claim 9, characterized in that: It also includes: a crushing device, one of the input ends of the crushing device is connected to the feeding device, the other input end of the crushing device is connected to the other output end of the screening device, and the output end of the crushing device is connected to the other input end of the screening device.

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