CN212525416U - Pretreatment system for semi-solid hazardous waste - Google Patents
Pretreatment system for semi-solid hazardous waste Download PDFInfo
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- CN212525416U CN212525416U CN202021852637.0U CN202021852637U CN212525416U CN 212525416 U CN212525416 U CN 212525416U CN 202021852637 U CN202021852637 U CN 202021852637U CN 212525416 U CN212525416 U CN 212525416U
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Abstract
The utility model provides a pretreatment system of semi-solid hazardous waste in the hazardous waste treatment field, which comprises a pre-sorting mechanism, a temporary storage mechanism and a mixing mechanism which are connected in sequence, and also comprises an impurity recovery mechanism which is connected with the pre-sorting mechanism and the mixing mechanism; the pre-sorting mechanism comprises a feeding trough, a chain type crusher, a sorting trough, a vibrating screen and a sorting finished product middle trough which are connected in sequence. The utility model discloses can solve the technique that has now and can not be abundant, effectual realization is selected separately, is added the processing such as control, breakage, screening and mobility improvement to semi-solid state danger waste material in the useless processing procedure of semi-solid state danger for the useless treatment effect of semi-solid state danger is relatively poor, the useless problem of processing reuse rate low of danger.
Description
Technical Field
The utility model relates to a useless field of handling of danger relates to the useless processing of danger and recycles, the semi-solid dangerous waste's of concretely relates to pretreatment systems.
Background
With the development of industry, the discharge of dangerous waste in industrial production process is increasing. It is estimated that the worldwide annual production of hazardous waste is 3.3 million tons. Hazardous waste is characterized by corrosivity, reactivity, flammability, toxicity, infectivity, etc., and the treatment of hazardous waste is increasingly important due to the serious pollution and potential serious influence brought by the hazardous waste. Dangerous wastes are generally divided into solid, semi-solid and liquid wastes for treatment, the semi-solid dangerous wastes mainly comprise sludge, but the sludge comprises various types, such as oily sludge, oil-based drilling cuttings, sulfur-containing sludge, heavy metal sludge and the like, temporary storage modes of hazardous wastes by waste production units are different, some enterprises directly load various wastes together to naturally precipitate the wastes, then drain water, and the left sludge has complicated components, even comprises impurities such as stones, beverage bottles, packaging bags and the like. At present, in the existing semi-solid hazardous waste treatment technology in China, due to the imperfect process and related equipment solutions, the processing such as sorting, compatibility control, crushing, screening, fluidity improvement and the like of semi-solid hazardous waste raw materials cannot be fully and effectively realized without fully considering the complexity and the harmfulness of the raw material form of the waste end. At present, the relatively efficient dangerous waste treatment is combined with a cement kiln to carry out cooperative treatment, dangerous waste is sent into the cement kiln to replace fuel or raw materials to a certain extent, the classified treatment of the dangerous waste in the prior art is insufficient, the treatment effect on semi-solid dangerous waste is poor, the content of harmful elements in the dangerous waste entering the kiln, the heat value, moisture, granularity, viscosity, the pH value, the flash point and other quality indexes cannot meet the requirement of cooperative treatment of the cement kiln, certain negative effects can be formed on cement production, the difficulty and the strength of operation of the cement kiln are increased, and the treatment reutilization rate of the dangerous waste is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the processing such as semi-solid state danger waste raw materials can not be selected separately, compatibility control, breakage, screening and mobility are improved to the effectual realization of current technique in the useless processing procedure of semi-solid state danger for it is relatively poor to semi-solid state danger useless treatment effect, the useless problem of processing reuse rate low of danger.
In order to solve the technical problem, the technical scheme provides a pretreatment system for semi-solid hazardous waste, which comprises a pre-sorting mechanism, a temporary storage mechanism and a mixing mechanism which are sequentially connected, and also comprises an impurity recovery mechanism connected with the pre-sorting mechanism and the mixing mechanism; the pre-sorting mechanism comprises a feeding trough, a chain type crusher, a sorting trough, a vibrating screen and a sorting finished product middle trough which are connected in sequence.
By adopting the technical scheme, the semi-solid hazardous waste is pre-sorted by the pre-sorting mechanism, the hardened sludge is crushed by the chain crusher to expose impurities, further sorting is carried out through a sorting groove, sludge blocks with larger size and impurities are sorted out, then further screening is carried out through a vibrating screen, impurities with different mass sizes are separated, thus separating various impurities through multilayer screening to obtain semi-solid dangerous waste products with uniform granularity, intensively packaging the semi-solid dangerous waste products through a separation finished product intermediate tank, sending the semi-solid dangerous waste products into a temporary storage mechanism for unified storage so as to be convenient for subsequent use, mix useless and other product hybrid processing through the useless of semi-solid state danger that the compounding mechanism will pass through the screening, separate impurity once more and carry out homogenization treatment, obtain the even product that can be applicable to reuse of texture, realize effectively sorting processing useless to semi-solid state danger, make the useless reuse rate improvement of semi-solid state danger to a certain extent.
Further, screw conveyors are arranged between the chain crusher and the sorting tank, between the sorting tank and the vibrating screen, and between the vibrating screen and the intermediate tank of the sorted finished product.
Adopt above-mentioned technical scheme, can effectively carry half solid-state danger through screw conveyer, can mix the useless raw materials of danger moreover.
Further, the mixing mechanism comprises a turnover machine, a mixing middle groove, a mixer, a mixing vibrating screen, a mixing iron remover and a vibratory feeder which are connected in sequence.
Adopt above-mentioned technical scheme, can accomplish and empty processes such as material loading, mixture, vibration screening, deironing once more and impurity to the useless raw materials of danger of preliminary sorting, carry out further homogenization treatment to the useless raw materials of danger through preliminary sorting for the useless raw materials texture of danger after handling is even, possesses better cyclic utilization effect.
Further, the turnover machine is connected with an empty box conveying and cleaning mechanism.
Adopt above-mentioned technical scheme, can carry out high-efficient convenient clean the retrieving with empty workbin after empting the useless raw materials of danger.
Further, the device also comprises a waste liquid input mechanism, wherein the waste liquid input mechanism is communicated with a waste liquid pipeline, and the pre-sorting mechanism, the material mixing mechanism and the waste liquid input mechanism are communicated with a waste gas pipeline.
Adopt above-mentioned technical scheme, can be used for the useless processing of semi-solid state danger with all kinds of waste liquids that liquid danger is useless handled, the useless treatment effeciency of make full use of liquid danger is useless, improves the useless treatment effeciency of danger, and exhaust gas pipeline is used for discharging the waste gas that produces in-process such as sorting in advance, compounding, waste liquid input, is convenient for carry out centralized processing to waste gas, also can improve the environment in danger useless processing place.
Further, the mixing intermediate tank and the mixer are connected with a waste liquid pipeline.
By adopting the technical scheme, the waste liquid product obtained by liquid-state hazardous waste treatment can be used for homogenizing semi-solid-state hazardous waste, so that the semi-solid-state hazardous waste and the liquid-state hazardous waste are fully mixed and reacted, and the treatment efficiency of the semi-solid-state hazardous waste is improved.
Further, screw conveyors are connected between the material mixing middle groove and the material mixer and between the material mixer and the material mixing vibrating screen.
By adopting the technical scheme, hazardous waste products after mixing can be effectively conveyed, and the problems of leakage, backflow and the like do not exist.
Furthermore, the front ends of the chain type crusher and the sorting tank are connected with a screen, and the screen, the vibrating screen, the mixing vibrating screen and the mixing iron remover are communicated with an impurity recovery mechanism.
By adopting the technical scheme, the impurities separated and screened in each link can be respectively recovered and stored, so that the impurities can be conveniently treated respectively again, and the impurities can be conveniently compatible and processed into recyclable resources.
Further, the temporary storage mechanism is a three-dimensional storehouse, and a metering scale is arranged between the sorting finished product intermediate tank and the three-dimensional storehouse.
By adopting the technical scheme, the three-dimensional storehouse adopts the intelligent three-dimensional storehouse, dangerous waste products can be conveniently and intensively stored through the three-dimensional storehouse, the warehoused products can be accurately metered and stored through the metering scale, and the management and compatibility use of various products are facilitated.
Furthermore, the inlet of the impurity recovery mechanism is also provided with a scale.
Adopt above-mentioned technical scheme, can carry out accurate measurement to the useless product of all kinds danger that the screening was retrieved and retrieve.
Drawings
Fig. 1 is a flow chart of embodiment 1 of the present invention;
FIG. 2 is a front view of a material mixing mechanism in embodiment 1 of the present invention;
fig. 3 is a front view of the pre-sorting mechanism in embodiment 1 of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a turnover machine 1, a screw conveyor 2, a mixer 3, a mixing vibrating screen 4, a vibrating feeder 5, a roller conveyor 6, a mixing middle tank 7, an iron remover 8, a screw pump 9, a feeding tank 10, a chain crusher 11, a separation tank 12, a vibrating screen 13, a separation finished product middle tank 14, a storage tank 15 and a waste liquid storage tank 16.
The embodiment is basically as shown in the attached figure 1: the utility model provides a pretreatment systems of semi-solid state hazardous waste, includes that the mechanism of sorting in advance, temporary storage mechanism, blendor 3 that connect gradually constructs and waste liquid input mechanism, still includes and constructs the impurity recovery mechanism of all being connected with the mechanism of sorting in advance, blendor 3. The temporary storage mechanism is an intelligent three-dimensional storehouse.
Referring to fig. 3, the pre-sorting mechanism includes a feeding chute 10, a chain crusher 11, a sorting chute 12, a vibrating screen 13 and a sorting finished product intermediate chute 14 connected in sequence. Spiral conveyors 2 are arranged between the chain crusher 11 and the sorting tank 12, between the sorting tank 12 and the vibrating screen 13, and between the vibrating screen 13 and the intermediate sorting tank 14. The inlet of the feeding groove 10 is provided with a screen with the aperture of 100mm, the outlet of the feeding groove 10 is communicated with the inlet of the chain crusher 11, the opening of the sorting groove 12 is provided with a screen with the aperture of 50mm, and the screen aperture of the vibrating screen 13 is also 50 mm. A metering scale is arranged between the intermediate tank 14 for sorting finished products and the three-dimensional storehouse, and a roller conveyor 6 and a hoisting hoist are arranged between the metering scale and the three-dimensional storehouse.
Referring to fig. 2, the mixer 3 comprises a tilter 1, a mixing middle tank 7, a mixer 3, a mixing vibrating screen 4, a mixing iron remover 8 and a vibrating feeder which are connected in sequence. A roller conveyor 6 is arranged between the three-dimensional storehouse and the turnover machine 1, and a conveying channel and a hoisting hoist which are used for conveying empty boxes to a cleaning station are connected to the outer side of the turnover machine 1. Waste liquid input mechanism is waste liquid holding vessel 16, and waste liquid holding vessel 16 has a plurality ofly, deposits different types of waste liquid in the different waste liquid holding vessel 16, and waste liquid holding vessel 16 intercommunication has the waste liquid pipeline, and groove 7 and blendor 3 all are connected with the waste liquid pipeline through the control valve in the middle of the compounding. The screw conveyors 2 are connected between the material mixing middle groove 7 and the material mixer 3 and between the material mixer 3 and the material mixing vibrating screen 4, and the screen mesh diameter of the material mixing vibrating screen 4 is 20 mm. The output of vibrating feeder 5 has storage tank 15 through screw pump 9 intercommunication, and the output of storage tank 15 also is connected with screw pump 9.
The pre-sorting mechanism, the mixer 3 mechanism and the waste liquid input mechanism are all communicated with a waste gas pipeline.
The screen, the vibrating screen 13, the mixing vibrating screen 4 and the mixing iron remover 8 are all communicated with an impurity recovery mechanism. And a metering scale is also arranged at the inlet of the impurity recovery mechanism.
In this embodiment, the mixer 3 has two sets, and the output end of each vibrating feeder 5 of each set of mixer 3 is communicated with two storage tanks 15.
The specific implementation process is as follows: the semi-solid dangerous waste comprises various industrial sludge, rectification residue, printing ink slag, paint slag, oil-based drilling cuttings, coating slag and the like, and the liquid dangerous waste is mainly waste organic solvent, oily wastewater, waste acid, waste alkali and the like. After various semi-solid dangerous wastes are collected from a waste production unit, the wastes are contained in a standard container and then are transported to a pretreatment center by a vehicle. Weighing the materials after unloading at a pretreatment center, then pouring dangerous wastes such as hardened sludge in a container into a feeding groove 10, screening out the mixed packaged materials and blocks with the volume exceeding 100mm at the screen at the inlet of the feeding groove 10, enabling the screened dangerous wastes such as the sludge to enter a chain crusher 11 through the feeding groove 10, crushing the dangerous wastes entering the chain crusher 11 by the chain crusher 11, discharging the crushed dangerous wastes into a spiral conveyer 2 from the chain crusher 11, conveying other dangerous wastes left after the hardened dangerous wastes are removed from the container to the spiral conveyer 2, conveying the dangerous wastes to a separation groove 12 by the spiral conveyer 2, screening out the blocks with the volume exceeding 50mm at the screen in front of the separation groove 12 through gravity, conveying the screened dangerous wastes to a vibrating screen 13 by the spiral conveyer 2, re-screening the dangerous wastes by the vibrating screen 13, and ensuring that the granularity of the screened dangerous wastes is less than 50mm, the screened hazardous wastes are transported to a finished product sorting middle tank 14 by a screw conveyor 2. Hazardous wastes in the intermediate tank 14 of the sorted finished products are discharged into a container with standard capacity through a control valve to be contained, the hazardous wastes contained in the container are measured by a metering scale and then packaged, and then the hazardous wastes are transported to an intelligent three-dimensional storehouse by a roller conveyor 6 and a hoisting hoist to be stored.
Dangerous waste temporarily existing in an intelligent three-dimensional storehouse is subjected to pre-sorting treatment, and is subjected to mixing and compatibility to be used for cement kiln cooperative treatment. In the mixing and compatibility process, the semi-solid dangerous waste and the liquid dangerous waste in the intelligent three-dimensional storehouse are fully mixed by using a mixer 3 according to a specific compatibility scheme, and hard and soft blocky impurities and metals in the materials are separated and removed again, so that various physical and chemical indexes of the materials entering the cement kiln are finally reached. In the mixing compatibility process, semi-solid hazardous waste with the particle size smaller than 50mm contained in a container is conveyed to the turnover machine 1 through the hoisting hoist and the roller conveyor 6, the turnover machine 1 turns the container, the semi-solid hazardous waste contained in the container is dumped to the mixing middle tank 7, and the dumped empty container is conveyed to an empty box and empty bucket cleaning operation area through the roller conveyor 6 and the hoisting hoist. According to the compatibility of medicines scheme, add the waste liquid in the waste liquid holding vessel 16 to the compounding in the middle of the groove 7 through waste liquid pipeline and control valve, stop the feeding after reaching the setting amount under control system's control, then add the other classification waste liquids of setting amount with same step, carry out preliminary mixing for the useless liquid rate that contains of danger, viscosity, pH value, form obtain preliminary adjustment, the useless through preliminary quenching and tempering of the useless danger in the groove 7 in the compounding carry in the blendor 3 through screw conveyer 2. In the blendor 3, send into the blendor 3 through waste liquid pipeline and control valve with the waste liquid in the different waste liquid holding vessel 16 according to the compatibility scheme, the semi-solid state danger waste and the useless mixture of liquid state danger that mix in blendor 3 for dangerous useless liquid content rate, viscosity, PH value, form, granularity after mixing obtain further improvement, reach and accord with the standard of entering the cement kiln and use. Hazardous waste after mixing compatibility is a homogeneous slurry-like semi-solid product with good fluidity and balanced heat value, the semi-solid product after mixing compatibility is transported to a mixing vibration sieve 4 by a screw conveyer 2, and impurities with the particle size of more than 20mm are sieved out by the screening of the mixing vibration sieve 4. The screened product is conveyed to a vibrating feeder 5, the product is treated by an iron remover 8 in the conveying process to remove metals contained in the product, the product from which impurities and metals are removed enters a screw pump 9 from the vibrating feeder 5, the product enters a storage tank 15 under the pumping of the screw pump 9 for storage, and the product is extracted from the storage tank 15 and conveyed to a cement kiln for use in subsequent use.
Impurities, blocks, metals and the like separated in the processes of the feeding groove 10, the sorting groove 12, the vibrating screen 13, the mixing vibrating screen 4 and the iron remover 8 are respectively filled with standard containers and then are transported to a storehouse for classification and storage through a forklift so as to be further classified.
And (3) discharging waste gases such as HCl, SO2, hydrogen sulfide, ammonia gas, VOC, acid-containing gas and the like generated in the pre-sorting, mixing and waste liquid input processes through a waste gas pipeline, and further performing harmless treatment through an alkaline tower, active carbon, a dust remover and the like and then discharging.
The quality indexes such as the content, the heat value, the moisture, the granularity, the viscosity, the PH value, the flash point and the like of the harmful elements of the semi-solid hazardous waste after the treatment all meet the requirement of the cement kiln for cooperative treatment and kiln feeding, and the semi-solid hazardous waste can be well applied to the cooperative treatment of the cement kiln, so that the resource recycling of the hazardous waste is realized.
Claims (10)
1. Semi-solid dangerous waste's preliminary treatment system, its characterized in that: the device comprises a pre-sorting mechanism, a temporary storage mechanism and a mixing mechanism which are connected in sequence, and also comprises an impurity recovery mechanism connected with the pre-sorting mechanism and the mixing mechanism; the pre-sorting mechanism comprises a feeding trough, a chain type crusher, a sorting trough, a vibrating screen and a sorting finished product middle trough which are connected in sequence.
2. The pretreatment system of semi-solid hazardous waste of claim 1, wherein: and spiral conveyors are arranged between the chain crusher and the sorting tank, between the sorting tank and the vibrating screen, and between the vibrating screen and the intermediate tank of the sorted finished product.
3. The pretreatment system of semi-solid hazardous waste of claim 2, wherein: the mixing mechanism comprises a turnover machine, a mixing middle groove, a mixer, a mixing vibrating screen, a mixing iron remover and a vibrating feeder which are connected in sequence.
4. The pretreatment system of semi-solid hazardous waste of claim 3, wherein: the turnover machine is connected with an empty box conveying and cleaning mechanism.
5. The pretreatment system of semi-solid hazardous waste of claim 4, wherein: still include waste liquid input mechanism, waste liquid input mechanism intercommunication has the waste liquid pipeline, pre-sorting mechanism, compounding mechanism, waste liquid input mechanism all communicate has the waste gas pipeline.
6. The pretreatment system of semi-solid hazardous waste of claim 5, wherein: the mixing intermediate tank and the mixer are both connected with a waste liquid pipeline.
7. The pretreatment system of semi-solid hazardous waste of claim 6, wherein: and screw conveyors are connected between the material mixing middle groove and the material mixer and between the material mixer and the material mixing vibrating screen.
8. The pretreatment system of semi-solid hazardous waste of claim 7, wherein: chain breaker and sorting tank front end all are connected with the screen cloth, and the screen cloth aperture is 100mm, screen cloth, shale shaker, compounding de-ironing separator all with impurity recovery mechanism intercommunication.
9. The pretreatment system of semi-solid hazardous waste of claim 8, wherein: the temporary storage mechanism is a three-dimensional storehouse, and a metering scale is arranged between the sorting finished product intermediate tank and the three-dimensional storehouse.
10. The pretreatment system of semi-solid hazardous waste of claim 9, wherein: and a metering scale is also arranged at the inlet of the impurity recovery mechanism.
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| CN202021852637.0U CN212525416U (en) | 2020-08-28 | 2020-08-28 | Pretreatment system for semi-solid hazardous waste |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111872074A (en) * | 2020-08-28 | 2020-11-03 | 重庆立洋环保科技发展有限公司 | Pretreatment system for semi-solid hazardous waste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872074A (en) * | 2020-08-28 | 2020-11-03 | 重庆立洋环保科技发展有限公司 | Pretreatment system for semi-solid hazardous waste |
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