CN115870303A - Solid waste pretreatment system and solid waste treatment process - Google Patents
Solid waste pretreatment system and solid waste treatment process Download PDFInfo
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- CN115870303A CN115870303A CN202211336585.5A CN202211336585A CN115870303A CN 115870303 A CN115870303 A CN 115870303A CN 202211336585 A CN202211336585 A CN 202211336585A CN 115870303 A CN115870303 A CN 115870303A
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Abstract
The invention discloses a solid waste pretreatment system and a solid waste treatment process, which comprise the following steps: the first material pits are arranged side by side and are used for containing different materials to be treated; the movable cover plate is arranged above the first material pit in a sliding mode and is provided with a material receiving channel; the movable distributing machine comprises a movable frame arranged on one side of the first material pit, a feed opening positioned on the upper surface of the movable frame, a conveying belt arranged in the movable frame and positioned below the feed opening, and two feeding hoppers arranged on the movable frame and respectively positioned right below two ends of the conveying belt; the discharge ports of the two feeding hoppers face two different first material pits respectively, and the movable cover plate can slide between the two different first material pits.
Description
Technical Field
The invention relates to the technical field of solid waste treatment, in particular to a solid waste pretreatment system and a solid waste treatment process.
Background
With the rapid development of economic and industrial construction in China, the quantity of solid wastes in mining industry, cities and the like greatly increases year by year, on one hand, the transportation of the solid wastes occupies a large amount of resources, on the other hand, the stacking of the solid wastes occupies a large area of land, seriously pollutes the environment, and the treatment of the solid wastes becomes more severe.
In the process of treating the solid waste, different solid wastes are poured into corresponding material pits through a transport vehicle at first, so that the labor cost is high; then solid useless processing producer sets up the conveyer belt in the processing region and carries the material, but because different materials need handle respectively, need set up many conveyer belts according to the material of difference, lead to whole area great.
Disclosure of Invention
In order to solve the technical problems, the invention provides a solid waste pretreatment system and a solid waste treatment process.
The invention adopts the following technical scheme:
a solid waste pretreatment system comprises:
the first material pits are arranged side by side and are used for containing different materials to be treated;
the movable cover plate is arranged above the first material pit in a sliding manner, and a material receiving channel is arranged on the movable cover plate;
the movable distributing machine comprises a movable frame arranged on one side of the first material pit, a feed opening positioned on the upper surface of the movable frame, a conveying belt arranged in the movable frame and positioned below the feed opening, and two feeding hoppers arranged on the movable frame and respectively positioned right below two ends of the conveying belt;
the discharge ports of the two feeding hoppers face two different first material pits respectively, and the movable cover plate can slide between the two different first material pits; when the movable cover plate slides to the position above one of the first material pits, a feeding funnel facing the first material pit is spliced with a receiving channel on the movable cover plate to form a discharging channel, the conveying belt rotates forwards, and materials entering through the discharging port are conveyed to the first material pit through the discharging channel; when the movable cover plate slides to the position above the other first material pit, the feeding hopper facing the other first material pit is spliced with the material receiving channel on the movable cover plate to form a discharging channel, the conveying belt rotates reversely, and materials entering through the discharging opening are conveyed to the other first material pit through the discharging channel.
So, utilize the slip of removing the apron to and remove the just reversal of conveyer belt among the cloth machine, the cooperation realizes carrying different materials to different first material pits in, for prior art through the transport mode of many conveyer belts, the structure is simpler, and all useless admittedly all through a removal cloth machine feeding distribution, whole area is littleer.
Preferably, the solid waste pretreatment system further comprises a second guide rail arranged in parallel to the arrangement direction of the first material pits, and the mobile distributor is mounted on the second guide rail and can slide between a first position and a second position relative to the second guide rail; the two first material pits towards which the discharge ports of the two feeding funnels face when the movable distributing machine is located at the first position and the two first material pits towards which the discharge ports of the two feeding funnels face when the movable distributing machine is located at the second position are alternately arranged. So, solid useless pretreatment system can utilize the slip of removing the apron, removes the just reversal of conveyer belt in the cloth machine to and remove the slip of cloth machine between primary importance and second place, the cooperation realizes carrying more kinds of different materials to different first material pits in.
Preferably, the solid waste pretreatment system further comprises two discharging hoppers arranged above the mobile distributing machine; when the movable distributing machine is respectively positioned at the first position and the second position, the discharging hoppers are respectively opposite to two different discharging openings. So, no matter remove the cloth machine and be located first position or second position, the material can both fall to the conveyer belt through unloading funnel and feed opening on, and then carries to first material hole in through the unloading passageway.
Preferably, all be provided with on each feed opening and can remove the picture peg in order to realize that the feed opening opens and close, all be provided with the push pedal on two picture pegs, the height of each push pedal all is higher than the distance of unloading funnel bottom surface to removing the frame upper surface. Therefore, when the movable distributing machine moves from the first position to the second position, the discharging hopper can be used for pushing the push plate, so that the inserting plate is driven to move, and one discharging port is opened; similarly, when the movable distributing machine moves from the second position to the first position, the push plate can be pushed by the discharging hopper, so that the inserting plate is driven to move, and the other discharging opening is opened; the structure design is ingenious, and other control structures do not need to be independently designed to control the opening of the feed opening.
Preferably, the lower surface of the inserting plate is provided with a mounting plate, and a reset elastic piece is arranged between the mounting plate and the moving frame. So, after the contact with the push pedal is broken away from to the unloading funnel, the picture peg can reset under the effect of the elastic component that resets, closes the feed opening.
Preferably, the movable cover plate further comprises a cover plate base with rollers at the bottom, a through hole is formed in the cover plate base, and one end of the material receiving channel is communicated with the through hole. So, utilize the apron base to cover the opening in first material hole, produced raise dust when can reduce the material as far as through the unloading passageway falls into in the first material hole.
Preferably, the solid waste pretreatment system further comprises:
the batching pit is positioned on one side of the first material pit and is used for containing the materials grabbed from the first material pit and uniformly mixing the materials;
and the second material pit is positioned on one side of the first material pit and is used for containing the mixed material which comes from the batching pit and meets the requirements after sampling and testing.
Therefore, solid wastes with different attributes are conveniently subjected to compatibility post-treatment, and the treatment efficiency is improved through synergistic effect. The chlorine content of the mixed material is less than or equal to 0.35 percent by weight, the heat value of the mixed material is less than or equal to 500kcal/kg, and the chromium content of the mixed material is less than or equal to 1000mg/kg, so that the mixed material is considered to meet the requirement.
A solid waste treatment process comprises the following steps:
s101, respectively putting high-chlorine materials, high-chromium materials, high-calorific-value materials and common materials into four first material pits by adopting the solid waste pretreatment system;
s103, respectively grabbing four different materials from the four first material pits to enter the batching pits, and uniformly mixing the materials to ensure that the weight percentage of the chlorine content of the mixed materials is less than or equal to 0.35 percent, the calorific value of the mixed materials is less than or equal to 500kcal/kg, and the chromium content of the mixed materials is less than or equal to 1000mg/kg;
s105, grabbing the mixed materials in the batching pit to a second material pit.
Therefore, the solid wastes with different attributes can be subjected to compatibility post-treatment, so that the solid waste materials are homogenized and stabilized, and the co-treatment efficiency is improved.
The high-chlorine material is a material with the chlorine content of more than or equal to 0.5 percent by weight, the high-heat value material is a material with the heat value of more than or equal to 1000kcal/kg, the high-chromium material is a material with the chromium content of more than or equal to 10000mg/kg, and the common material is a material which accords with the cooperative treatment of the cement kiln except the three materials.
Preferably, the treatment process further comprises: and respectively sampling and testing the four materials in the four first material pits.
Compared with the prior art, the invention has the following advantages:
1. the invention realizes the conveying of different materials into different first material pits by utilizing the sliding of the movable cover plate and the forward and reverse rotation of the conveying belts in the movable distributing machine in a matching way, has simpler structure compared with the conveying mode of a plurality of conveying belts in the prior art, and has smaller integral occupied area because all solid wastes are fed and distributed by one movable distributing machine.
2. The invention provides a solid waste treatment process, which is characterized in that different materials are concentrated by utilizing the solid waste pretreatment system, then the concentrated materials are subjected to compatibility treatment according to different attributes, and the solid waste treatment efficiency is improved through a synergistic effect.
Drawings
Fig. 1 is a schematic view of the overall structure of the moving distributor in the first position.
Fig. 2 is another schematic view of the overall structure of the mobile distributor in the first position.
Fig. 3 is a schematic view of the overall structure of the moving spreader in the second position.
Fig. 4 is another schematic view of the overall structure of the mobile distributor in the second position.
Fig. 5 is another view structure diagram of the solid waste pretreatment system.
Fig. 6 is a schematic structural view of the movable cover plate.
FIG. 7 is a schematic view of a partial structure of a solid waste pretreatment system.
Fig. 8 is a schematic structural view of the mobile distributing machine.
Fig. 9 is another view structure diagram of the mobile distributing machine.
In the figure, a first material pit 1, a first guide rail 1-1, a movable cover plate 2, a material receiving channel 2-1, a cover plate base 2-2, a movable distributing machine 3, a movable frame 3-1, a material discharging opening 3-2, a conveying belt 3-3, a material feeding funnel 3-4, an inserting plate 3-5, a pushing plate 3-5-1, an installation plate 3-5-2, a reset elastic part 3-5-3, a second guide rail 4, a material discharging funnel 5, a material mixing pit 6 and a second material pit 7.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 9, a solid waste pretreatment system includes:
the first material pits 1 are arranged side by side and used for containing different materials to be treated; a first guide rail 1-1 for moving the movable cover plate 2 is arranged on the movable cover plate;
the movable cover plate 2 is arranged above the first material pit 1 in a sliding mode and is provided with a material receiving channel 2-1;
the movable distributing machine 3 comprises a movable frame 3-1 arranged on one side of the first material pit 1, a feed opening 3-2 positioned on the upper surface of the movable frame 3-1, a conveying belt 3-3 arranged in the movable frame 3-1 and positioned below the feed opening 3-2, and two feeding hoppers 3-4 arranged on the movable frame 3-1 and respectively positioned right below two ends of the conveying belt 3-3;
the discharge ports of the two feeding hoppers 3-4 respectively face two different first material pits 1, and the movable cover plate 2 can slide between the two different first material pits 1; when the movable cover plate 2 slides to the upper part of one of the first material pits 1, a feeding funnel 3-4 facing the first material pit 1 is spliced with a receiving channel 2-1 on the movable cover plate 2 to form a discharging channel, the conveying belt 3-3 rotates forwards, and materials entering through the discharging port 3-2 are conveyed to the first material pit 1 through the discharging channel; when the movable cover plate 2 slides to the upper part of another first material pit 1, the feeding funnel 3-4 facing the another first material pit 1 is spliced with the receiving channel 2-1 on the movable cover plate 2 to form a discharging channel, the conveying belt 3-3 is reversed, and the material entering through the discharging port 3-2 is conveyed to the another first material pit 1 through the discharging channel.
As a preferred embodiment of this embodiment, the solid waste pretreatment system further includes a second guide rail 4 arranged parallel to the arrangement direction of the first material pit 1, and the mobile distributor 3 is mounted on the second guide rail 4 and can slide between a first position and a second position relative to the second guide rail 4; the two first material pits 1, towards which the discharge ports of the two feeding hoppers 3-4 face when the mobile distributing machine 3 is located at the first position, and the two first material pits 1, towards which the discharge ports of the two feeding hoppers 3-4 face when the mobile distributing machine 3 is located at the second position, are alternately arranged. Therefore, the solid waste pretreatment system can realize the conveying of various materials into four different first material pits 1 by utilizing the sliding of the movable cover plate 2, the forward and reverse rotation of the conveying belts 3-3 in the movable distributing machine 3 and the sliding of the movable distributing machine 3 between the first position and the second position.
As shown in fig. 1 to 5, in this embodiment, there are 4 first material pits 1 arranged in a straight line, which are respectively a first material pit a, a first material pit b, a first material pit c, and a first material pit d (arranged in sequence from left to right in fig. 1), the movable cover plate 2 can slide on the first material pit 1, can cover an opening of any one of the first material pits 1, and the movable distributor 3 can slide between a first position and a second position relative to the second guide rail 4. Each first material pit 1 is correspondingly provided with a material, wherein the first material pit a is provided with a common material, the first material pit b is provided with a high-chlorine material, the first material pit c is provided with a Gao Rezhi material, and the first material pit d is provided with a high-chromium material. The high-chlorine material is a material with the chlorine content of more than or equal to 0.5 percent by weight, the high-calorific-value material is a material with the calorific value of more than or equal to 1000kcal/kg, the high-chromium material is a material with the chromium content of more than or equal to 10000mg/kg, the common material is a material which accords with the cooperative treatment of the cement kiln except the three materials, and the material which accords with the cooperative treatment of the cement kiln is a) radioactive waste; b) Explosives and reactive wastes, wherein the reactive wastes refer to solid wastes which are easy to react violently when in contact with water and air; solid wastes that produce dangerous amounts of flammable or toxic and harmful gases when in contact with water, air; cyanide or sulfide containing waste which, when exposed to an environment at a pH of 2 to 12.5, produces toxic gases, vapors or fumes sufficient to be hazardous to human health or the environment, is a hazardous waste that is reactive; waste products that can decompose to produce oxygen and heat, or thermally unstable oxides or peroxides; c) Waste batteries, waste household appliances and electronic products which are not disassembled; d) A mercury-containing thermometer, a sphygmomanometer, a fluorescent lamp tube and a switch; e) Chromium slag; f) Materials other than unknown identity and unidentified waste (which has not been assayed, whose specific composition, identity, etc. are unknown). The common material may contain partial chlorine, chromium and other elements.
For ease of understanding, the following is exemplified.
As shown in fig. 1, when the incoming material is a common material, the mobile distributor 3 moves to a first position, the mobile cover plate 2 moves to a position above the first material pit a, at this time, the material receiving channel 2-1 on the mobile cover plate 2 is spliced with the material feeding funnel 3-4 (the material feeding funnel on the left side in fig. 1) facing the first material pit a to form a material discharging channel, the common material falls on the conveying belt 3-3 through the material discharging port 3-2, the conveying belt 3-3 rotates counterclockwise (the angle shown in fig. 1), the common material falls from the material feeding funnel 3-4 on the left side of the conveying belt 3-3, and enters the first material pit a through the material receiving channel 2-1. As shown in fig. 2, when the incoming material is a high-calorific-value material, the mobile distributor 3 is kept at the first position, the mobile cover plate 2 moves to the position above the first material pit c, at this time, the material receiving channel 2-1 on the mobile cover plate 2 is spliced with the material feeding funnel 3-4 (the material feeding funnel on the right side in fig. 2) facing the first material pit c to form a material discharging channel, the high-calorific-value material falls on the conveyor belt 3-3 through the material discharging port 3-2, the conveyor belt 3-3 rotates clockwise (the angle shown in fig. 2), and the high-calorific-value material falls from the material feeding funnel 3-4 on the right side of the conveyor belt 3-3 and enters the first material pit c through the material receiving channel 2-1. As shown in fig. 3, when the incoming material is a high-chlorine material, the mobile material distributor 3 moves to a second position, the mobile cover plate 2 moves to a position above the first material pit b, the material receiving channel 2-1 on the mobile cover plate 2 is spliced with the material feeding funnel 3-4 facing the first material pit b to form a material discharging channel, the high-chlorine material falls on the conveying belt 3-3 through the material discharging port 3-2, the conveying belt 3-3 rotates counterclockwise, and the high-chlorine material falls from the material feeding funnel 3-4 on the left side of the conveying belt 3-3 and enters the first material pit b through the material receiving channel 2-1. As shown in fig. 4, when the incoming material is a high-chromium material, the mobile material distributor 3 moves to a second position, the mobile cover plate 2 moves to a position above the first material pit d, at this time, the material receiving channel 2-1 on the mobile cover plate 2 is spliced with the material feeding funnel 3-4 facing the first material pit d to form a material discharging channel, the high-chromium material falls on the conveying belt 3-3 through the material discharging port 3-2, the conveying belt 3-3 rotates clockwise, and the high-chromium material falls from the material feeding funnel 3-4 on the right side of the conveying belt 3-3 and enters the first material pit d through the material receiving channel 2-1.
As shown in fig. 5, 8 and 9, the solid waste pretreatment system further includes two discharging hoppers 5 disposed above the movable distributing machine 3, the two discharging ports 3-2 are respectively disposed on the left and right sides of the upper surface of the movable frame 3-1, and the discharging hoppers 5 are always disposed between the two discharging ports 3-2. When the movable distributing machine 3 is respectively positioned at the first position and the second position, the discharging hoppers 5 are respectively opposite to two different discharging ports 3-2. Each blanking port 3-2 is provided with an inserting plate 3-5 which can move to open and close the blanking port 3-2, the two inserting plates 3-5 are provided with a push plate 3-5-1, and the height of each push plate 3-5-1 is higher than the distance from the bottom surface of the blanking funnel 5 to the upper surface of the movable frame 3-1. Thus, as shown in fig. 1-4, in the process that the movable distributing machine 3 moves from the first position to the second position, the discharging hopper 5 can be used for pushing the push plate 3-5-1, so as to drive the inserting plate 3-5 to move, and open one of the discharging ports 3-2; similarly, when the movable distributing machine 3 moves from the second position to the first position, the discharging hopper 5 can be used for pushing the push plate 3-5-1, so that the inserting plate 3-5 is driven to move, and the other discharging opening 3-2 is opened; the structure design is ingenious, and other control structures do not need to be independently designed to control the opening of the feed opening. Specifically, when the material distributing device is used, the movable material distributing machine 3 moves from the first position to the second position, the push plate 3-5-1 on the left insert plate 3-5 firstly abuts against the left side wall of the discharging hopper 5, then the movable material distributing machine 3 continues to move rightwards, the push plate 3-5-1 moves leftwards by the aid of acting force between the push plate 3-5-1 and the discharging hopper 5, the left insert plate 3-5 removes the sealing of the left discharging opening 3-2 until the lower end opening of the discharging hopper 5 is communicated with the left discharging opening 3-2, and at the moment, the movable material distributing machine 3 is located at the second position. The process of moving the material distributor 3 from the second position to the first position is not described in detail.
As shown in fig. 9, the lower surface of the insertion plate 3-5 is provided with a mounting plate 3-5-2, and a return elastic member 3-5-3 is arranged between the mounting plate 3-5-2 and the movable frame 3-1. Therefore, after the feeding funnel 5 is separated from the contact with the push plate 3-5-1, the inserting plate 3-5 can reset under the action of the reset elastic part 3-5-3, and the feeding opening 3-2 is closed. The return elastic member 3-5-3 may be a spring.
As shown in fig. 6 and 7, the movable cover plate 2 further includes a cover plate base 2-2 having a roller at the bottom, the cover plate base is provided with a through hole, and one end of the material receiving channel 2-1 is communicated with the through hole. The cover plate base 2-2 is of a sealing plate structure, can seal the corresponding first material pit 1, and can reduce raised dust generated when materials fall into the first material pit 1 through the blanking channel as much as possible. In this embodiment, the feeding funnel 3-4 includes a funnel part and a feeding channel connected to the lower end of the funnel part, and the feeding channel and the receiving channel 2-1 are both obliquely arranged and have the same inclination angle.
The solid waste pretreatment system further comprises:
the batching pit 6 is positioned on one side of the first material pit 1 and used for containing the materials grabbed from the first material pit 1 and uniformly mixing the materials;
and the second material pit 7 is positioned on one side of the first material pit 1 and is used for containing the mixed material which comes from the batching pit 6 and meets the requirements after sampling and testing.
After four materials are respectively distributed in the four first material pits 1, the corresponding materials in the four first material pits 1 are grabbed to the batching pit 6 through the grabbing mechanism, the materials are uniformly mixed, and after sampling test results meet requirements, the mixed materials in the batching pit 6 are grabbed to the second material pit 7. In this embodiment, the first material pit 1 is a small material pit, and the second material pit 7 is a large material pit, and is substantially equal to the size of the two first material pits 1.
A solid waste treatment process comprises the following steps:
s101, respectively putting high-chlorine materials, high-chromium materials, high-calorific-value materials and common materials into four first material pits 1 by adopting the solid waste pretreatment system.
Specifically, a first material pit a is used for placing common materials, a first material pit b is used for placing high-chlorine materials, a first material pit c is used for placing Gao Rezhi materials, and a first material pit d is used for placing high-chromium materials; the high-chlorine material is a material with the chlorine content of more than or equal to 0.5 percent by weight, the high-heat value material is a material with the heat value of more than or equal to 1000kcal/kg, the high-chromium material is a material with the chromium content of more than or equal to 10000mg/kg, and the common material is a material which accords with the cooperative treatment of the cement kiln except the three materials, as mentioned above, the description is omitted here.
S103, respectively grabbing four different materials from the four first material pits 1 into the batching pit 6, and uniformly mixing to ensure that the weight percentage of the chlorine content of the mixed materials is less than or equal to 0.35%, the calorific value of the mixed materials is less than or equal to 500kcal/kg, and the chromium content of the mixed materials is less than or equal to 1000mg/kg.
And S105, grabbing the mixed material in the batching pit 6 to a second material pit 7, and putting the mixed material into a cement kiln for incineration according to a conventional solid waste treatment process.
In addition, after the materials enter the first material pit 1, various materials need to be preliminarily tested, so that the small difference of the content of corresponding substances in the materials from different sources and in different batches is prevented.
Determining the adding amount m of the common materials according to the actual daily production disposal requirement 1 (the unit is kg, generally about 50% -70% of the weight of the mixed materials), if the high-chlorine materials in the warehouse in a certain time period are more, the high-chromium materials and the high-heat-value materials are less, the adding amount of the high-chlorine materials is calculated: using formulas
Calculating the maximum feeding amount M of the high-chlorine material cl (unit is kg) in the formula, S cl Is the weight percentage of the chlorine content in the high-chlorine material (obtained by testing and analyzing the high-chlorine material), N is the weight of the mixed material (the unit is kg, determined according to the size of the second material pit 7, generally about 150-200 tons), and S is 1 Is the weight percentage of the chlorine content in the common material (obtained by the analysis of the common material). m is cl The maximum dosage M of the high-chlorine material is selected as the actual dosage (unit is kg) of the high-chlorine material cl 0.5-0.8 times of the total weight of the powder.
Then, using the formula
Calculating the maximum feeding amount M of the high-chromium material cr (unit is kg) in the formula, S cr M is the chromium content (in mg/kg, obtained by assay analysis of the high-chromium material) per kg of high-chromium material 1 The dosage (unit is kg) of common materials, S 2 Is the chromium content (in mg/kg, obtained by assay analysis of the common material) per kg of common material, m cl The actual dosage (in kg) of the high-chlorine material, scl is the chromium content (in mg/kg, obtained by assay and analysis of the high-chlorine material) in each kilogram of the high-chlorine material, N is the weight (in kg) of the mixed material, m is the weight of the mixed material cr Selecting the maximum feeding amount M of the high-chromium material as the actual feeding amount (unit is kg) of the high-chromium material cr 0.5-0.8 times of the total weight of the powder.
Then, using the formula
Calculating the maximum adding amount M of the high heat value material r (unit is kg) in the formula, S r Is the calorific value (in kcal/kg, obtained by laboratory analysis of high calorific value material) per kg of high calorific value material, m 1 The dosage (unit is kg) of common materials, S 3 Is the calorific value (in kcal/kg, obtained by assay analysis of the common material) per kg of the common material, m cl The actual dosage (in kg) of the high-chlorine material is S 4 Is the calorific value (in kcal/kg, obtained by laboratory analysis of high-chlorine material) per kg of high-chlorine material, N is the weight (in kg) of the mixed material, S is the weight of the mixed material 5 The calorific value per kilogram of the high-chromium material (kcal/kg, obtained by laboratory analysis of the high-chromium material), mcr is the actual addition (kg) of the high-chromium material, and the maximum addition M of the high-chromium material is selected as the actual addition of the high-calorific material r 0.5-0.8 times of the total weight of the powder.
Operating personnel shifts four kinds of different materials from first material hole 1 to batching hole 6 in proper order according to the requirement of input volume through the grab bucket from taking weighing system, carries out abundant mixture with all materials in batching hole 6, carries out the sample chemical examination after the misce bene, and after the chemical examination accords with the processing index, the grab bucket grabs to second material hole 7 and stores, and unqualified material carries out the secondary and mixes the adjustment according to the chemical examination result, until qualified.
The materials after compatibility are conveyed to a cement plant raw material mill by a corresponding belt weigher and a corresponding belt conveyor to finish the whole feeding process. Sampling and detecting the mixed materials on the belt weigher according to the frequency of 1/4 hours, wherein the fluctuation range of chlorine, chromium and heat value detection data is controlled to be not more than 30 percent, otherwise, the mixture is required to be compounded again.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the scope defined by the claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be regarded as the scope of the present invention.
Claims (10)
1. A solid waste pretreatment system is characterized by comprising:
the first material pits (1) are arranged side by side and are used for containing different materials to be treated;
the movable cover plate (2) is arranged above the first material pit (1) in a sliding manner, and a material receiving channel (2-1) is arranged on the movable cover plate;
the movable distributing machine (3) comprises a movable frame (3-1) arranged on one side of the first material pit (1), a feed opening (3-2) positioned on the upper surface of the movable frame (3-1), a conveying belt (3-3) arranged in the movable frame (3-1) and positioned below the feed opening (3-2), and two feeding hoppers (3-4) arranged on the movable frame (3-1) and respectively positioned right below two ends of the conveying belt (3-3);
the discharge ports of the two feeding hoppers (3-4) respectively face two different first material pits (1), and the movable cover plate (2) can slide between the two different first material pits (1); when the movable cover plate (2) slides to the position above one of the first material pits (1), a feeding funnel (3-4) facing the first material pit (1) is spliced with a material receiving channel (2-1) on the movable cover plate (2) to form a discharging channel, the conveying belt (3-3) rotates forwards, and materials entering through the discharging port (3-2) are conveyed to the first material pit (1) through the discharging channel; when the movable cover plate (2) slides to the position above the other first material pit (1), the feeding hopper (3-4) facing the other first material pit (1) is spliced with the material receiving channel (2-1) on the movable cover plate (2) to form a discharging channel, the conveying belt (3-3) is reversed, and materials entering through the discharging port (3-2) are conveyed to the other first material pit (1) through the discharging channel.
2. The solid waste pretreatment system of claim 1, wherein: the solid waste pretreatment system also comprises a second guide rail (4) arranged in parallel to the arrangement direction of the first material pits (1), and the movable distributing machine (3) is mounted on the second guide rail (4) and can slide between a first position and a second position relative to the second guide rail (4); the two first material pits (1) towards which the discharge ports of the two feeding funnels (3-4) face when the movable distributing machine (3) is located at the first position and the two first material pits (1) towards which the discharge ports of the two feeding funnels (3-4) face when the movable distributing machine (3) is located at the second position are alternately arranged.
3. The solid waste pretreatment system of claim 2, wherein: the solid waste pretreatment system also comprises two discharging hoppers (5) arranged above the mobile distributing machine (3), and the number of the discharging ports (3-2) is two; when the movable distributing machine (3) is respectively located at the first position and the second position, the discharging hoppers (5) are respectively opposite to the two different discharging openings (3-2).
4. The solid waste pretreatment system of claim 3, wherein: each blanking port (3-2) is provided with an inserting plate (3-5) which can move to open and close the blanking port (3-2), the two inserting plates (3-5) are provided with push plates (3-5-1), and the height of each push plate (3-5-1) is higher than the distance from the bottom surface of the blanking funnel (5) to the upper surface of the movable frame (3-1).
5. The solid waste pretreatment system according to claim 4, wherein: the lower surface of the plug board (3-5) is provided with a mounting plate (3-5-2), and a reset elastic part (3-5-3) is arranged between the mounting plate (3-5-2) and the movable frame (3-1).
6. The solid waste pretreatment system of claim 1, wherein: the movable cover plate (2) further comprises a cover plate base (2-2) with rollers at the bottom, a through hole is formed in the cover plate base, and one end of the material receiving channel (2-1) is communicated with the through hole.
7. The solid waste pretreatment system of claim 1, wherein: the solid waste pretreatment system further comprises:
the batching pit (6) is positioned on one side of the first material pit (1) and is used for containing the materials grabbed from the first material pit (1) and uniformly mixing the materials;
and the second material pit (7) is positioned on one side of the first material pit (1) and is used for containing the mixed material which comes from the batching pit (6) and meets the requirements after sampling and testing.
8. The solid waste treatment process is characterized by comprising the following steps:
s101, respectively putting a high-chlorine material, a high-chromium material, a high-calorific-value material and a common material into four first material pits (1) by adopting the solid waste pretreatment system of any one of claims 1 to 7;
s103, respectively grabbing four different materials from the four first material pits (1) to enter the batching pits (6), and uniformly mixing to ensure that the weight percentage of the chlorine content of the mixed materials is less than or equal to 0.35%, the calorific value of the mixed materials is less than or equal to 500kcal/kg, and the chromium content of the mixed materials is less than or equal to 1000mg/kg;
s105, grabbing the mixed materials in the batching pit (6) to a second material pit (7).
9. The solid waste treatment process according to claim 8, wherein: the high-chlorine material is a material with the chlorine content of more than or equal to 0.5 percent by weight, the high-heat value material is a material with the heat value of more than or equal to 1000kcal/kg, the high-chromium material is a material with the chromium content of more than or equal to 10000mg/kg, and the common material is a material which accords with the cooperative treatment of the cement kiln except the three materials.
10. The solid waste treatment process of claim 8, further comprising: and respectively sampling and testing the four materials in the four first material pits (1).
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