CN111266386A - Powdery waste recovery system of industry - Google Patents
Powdery waste recovery system of industry Download PDFInfo
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- CN111266386A CN111266386A CN202010024729.8A CN202010024729A CN111266386A CN 111266386 A CN111266386 A CN 111266386A CN 202010024729 A CN202010024729 A CN 202010024729A CN 111266386 A CN111266386 A CN 111266386A
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
Abstract
The invention belongs to the technical field of waste recovery, and discloses an industrial powdery waste recovery system and method, wherein the industrial powdery waste recovery system comprises: the device comprises a video monitoring module, a heavy metal detection module, a dust concentration detection module, a main control module, a weighing module, a spraying module, a digestion module, a precipitation module, a filtering module, an oxidation module and a display module. According to the dust weighing device, the dust weighing accuracy can be improved through the weighing module; meanwhile, the ultrasonic digestion is used for the treatment of the casting dust through the digestion module, so that the sample is digested more thoroughly.
Description
Technical Field
The invention belongs to the technical field of waste recovery, and particularly relates to an industrial powdery waste recovery system.
Background
Industrial dust is mainly derived from mechanical crushing and grinding of solid materials, mixing, screening, packaging and transportation of powdery materials, smoke generated by combustion of materials, oxidation and condensation of steam generated when materials are heated in air. Industrial dust seriously harms human health, and toxic metal dust and non-metal dust (chromium, manganese, cadmium, lead, mercury, arsenic and the like) can cause poisoning to death after entering human bodies. Industrial dust has significant negative effects on the surrounding atmospheric environment and is more harmful. The form of its discharge is two: one is organized emission, namely, atmospheric pollutants are regularly emitted through an exhaust funnel, and the industrial dust is easy to treat and reach the standard generally only by correctly and reasonably selecting a treatment method; the other is an unorganized discharge, which means discharge without an exhaust funnel, and generally includes a surface source, a point source and the like. Such as openly-stacked mineral aggregate, coal, clay, limestone, samarium lost material and the like, and belongs to a non-organized emission source of surface source; the dust generated by the mechanical fall of bulk materials at a belt transfer point, loading of a truck, unloading and the like belongs to a point-shaped unorganized emission source. However, the existing industrial powdery waste recovery system cannot completely digest dust; meanwhile, the dust weighing is not accurate, and the weighing error is large.
In summary, the problems of the prior art are as follows: the existing industrial powdery waste recovery system cannot thoroughly digest dust; meanwhile, the dust weighing is not accurate, and the weighing error is large.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an industrial powdery waste recovery system.
The present invention is achieved as described above, and provides a method for recovering industrial powdery waste, including: :
firstly, conveying dust gas to be measured into a measurement place, sampling a dust number value in a unit volume as sample data, and classifying the dust number value according to three types of particle sizes of 0.3-2.5 mu m, 2.5-10 mu m and more than 10 mu m, wherein the three types of particle sizes are respectively marked as NPM0.3-2.5, NPM2.5-10 and NPM 10;
step two, based on the sample obtained in the step oneThe data, calculate all dust weights with particle size less than or equal to 2.5 μm per unit volume, and record as GPM2.5, the calculation formula is as follows: GPM2.5 ═ NPM0.3-2.5 Xk1Wherein k is1To convert the coefficients, k1＝1.5×10-7；
Step three, calculating the weight of all dust with the particle size of less than or equal to 10 μm in unit volume based on the sample data obtained in the step one, marking the weight as GPM10, sampling PM2.5-10 dust, and obtaining the total weight of 8 μ g per 1000 samples on average, wherein the calculation formula is as follows: GPM10 ═ NPM2.5-10 xk2+ GPM2.5, where k2To convert the coefficients, k2＝0.8×10-4；
Step four, sampling the dust with PM0.3-2.5, obtaining the total weight of 15 mu g in every 10 ten thousand on average, and calculating to obtain k in unit volume1＝1.5×10-7；
Step five, weighting and converting all dust numerical values with different particle diameters in the same type of dust particles into dust numerical values with the same particle diameter;
and step six, respectively carrying out weighted calculation on the dust with the particle size of 2.5 microns and the dust with the particle size of 10 microns in the same type of dust particles, wherein the weighted calculation is respectively represented by the number of the dust with the particle size of 0.3 microns, and the conversion coefficients are respectively 100 and 1000, namely, in the same type of dust particles, the volume of the dust with the particle size of 2.5 microns is equivalent to the volume of 100 dust with the particle size of 0.3 microns, and the volume of the dust with the particle size of 10 microns is equivalent to the volume of 1000 dust with the particle size of 0.3 microns.
Step seven, the industrial dust processed in the step six is transmitted to a digestion furnace through a transmission pipeline; firstly, digesting casting dust with dilute acid for 50 min;
step eight, digesting with concentrated acid and simultaneously carrying out ultrasonic treatment for 80 min;
step nine, digesting the mixture with an oxidant until no foam exists after the concentrated acid digestion is finished;
and step ten, finally digesting for 20min by concentrated acid.
Further, before the step one, the following steps are required: monitoring the recovery process of industrial powdery waste by a camera through a video monitoring module; detecting the heavy metal content of the industrial powdery waste by using a heavy metal detector through a heavy metal detection module; passing through a dust concentration detection module; detecting industrial dust concentration data by using a dust detector;
the main control module measures the weight of the industrial dust through the weighing module; and spraying the industrial dust by using a spray tower through a spray module.
Further, the diluted acid in the seventh step is a diluted nitric acid solution of 6mol/L or a diluted hydrochloric acid solution of 0.5mol/L, and the weight ratio of the dust to the diluted acid solution is 1: 6.
Further, the concentrated acid in the eighth step and the ninth step is one of concentrated nitric acid of 15mol/L, aqua regia or hydrofluoric acid of 16mol/L, and the weight ratio of the dust sample to the concentrated acid solution is 1: 6.
Further, the oxidant in the ninth step is H with the mass fraction of 30%2O2The weight ratio of the dust to the oxidant is 10: 1.
Further, after the ninth step, carrying out precipitation reaction on the dust by using a chemical agent through a precipitation module; and filtering the precipitated substances by using a filter screen through a filter module.
Further, after the sediment is filtered by the filter screen through the filter module, the sediment is oxidized by the oxidant through the oxidation module;
and the display is used for displaying the monitoring video, the detected heavy metal data and the dust concentration data through the display module.
Another object of the present invention is to provide an industrial powdery waste recovery system, comprising:
the video monitoring module is connected with the main control module and is used for monitoring the recovery process of industrial powdery waste through a camera;
the heavy metal detection module is connected with the main control module and is used for detecting the content of heavy metal in the industrial powdery waste through a heavy metal detector;
the dust concentration detection module is connected with the main control module and used for detecting industrial dust concentration data through a dust detector;
the main control module is connected with the video monitoring module, the heavy metal detection module, the dust concentration detection module, the weighing module, the spraying module, the digestion module, the precipitation module, the filtering module, the oxidation module and the display module and is used for controlling each module to normally work through the main control computer;
the weighing module is connected with the main control module and used for measuring the weight of the industrial dust;
the spraying module is connected with the main control module and is used for spraying the industrial dust through the spraying tower;
the digestion module is connected with the main control module and is used for carrying out digestion operation on the industrial dust;
the precipitation module is connected with the main control module and is used for carrying out precipitation reaction with dust through a chemical agent;
the filtering module is connected with the main control module and is used for filtering the precipitated substances through a filter screen;
the oxidation module is connected with the main control module and is used for carrying out oxidation treatment on the precipitated substances through an oxidant;
and the display module is connected with the main control module and used for displaying the monitoring video, the detected heavy metal data and the dust concentration data through a display.
It is another object of the present invention to provide a computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface to implement an industrial powdered waste recycling method when executed on an electronic device.
Another object of the present invention is to provide a computer-readable storage medium storing instructions which, when executed on a computer, cause the computer to perform any one of the industrial powdery waste recovery methods.
The invention has the advantages and positive effects that: according to the dust weighing device, the dust weighing accuracy can be improved through the weighing module; meanwhile, ultrasonic digestion is used in the treatment of casting dust by a digestion module, and the principle is that when a sample is ultrasonically treated, polar molecules are rapidly changed in orientation along with the frequency of microwaves, such as 2450MHz microwaves, and the molecules are changed every secondDirection change 2.45 is multiplied by 109Then, the molecules rotate back and forth and collide and rub with surrounding molecules, the total energy of the molecules is increased, the temperature of the sample is increased rapidly, and charged particles (ions, hydrated ions and the like) in the test solution are subjected to the action of an electric field force in an alternating electromagnetic field to move back and forth and collide with adjacent molecules, so that the temperature of the sample is increased, and the sample is digested more thoroughly.
Drawings
Fig. 1 is a block diagram of a system for recycling industrial powdery waste according to an embodiment of the present invention.
In the figure: 1. a video monitoring module; 2. a heavy metal detection module; 3. a dust concentration detection module; 4. a main control module; 5. a weighing module; 6. a spraying module; 7. a digestion module; 8. a precipitation module; 9. a filtration module; 10. an oxidation module; 11. and a display module.
Fig. 2 is a flow chart of a method for recovering industrial powdery waste according to an embodiment of the present invention.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an industrial powdery waste recycling system according to an embodiment of the present invention includes: the device comprises a video monitoring module 1, a heavy metal detection module 2, a dust concentration detection module 3, a main control module 4, a weighing module 5, a spraying module 6, a digestion module 7, a precipitation module 8, a filtering module 9, an oxidation module 10 and a display module 11.
And the video monitoring module 1 is connected with the main control module 4 and is used for monitoring the recovery process of industrial powdery wastes through a camera.
And the heavy metal detection module 2 is connected with the main control module 4 and is used for detecting the heavy metal content of the industrial powdery waste through a heavy metal detector.
And the dust concentration detection module 3 is connected with the main control module 4 and used for detecting industrial dust concentration data through a dust detector.
The main control module 4 is connected with the video monitoring module 1, the heavy metal detection module 2, the dust concentration detection module 3, the weighing module 5, the spraying module 6, the digestion module 7, the precipitation module 8, the filtering module 9, the oxidation module 10 and the display module 11, and is used for controlling each module to normally work through the main control computer.
And the weighing module 5 is connected with the main control module 4 and is used for measuring the weight of the industrial dust.
And the spraying module 6 is connected with the main control module 4 and is used for spraying the industrial dust through a spraying tower.
And the digestion module 7 is connected with the main control module 4 and is used for digesting the industrial dust.
And the precipitation module 8 is connected with the main control module 4 and is used for carrying out precipitation reaction on the dust through a chemical agent.
And the filtering module 9 is connected with the main control module 4 and is used for filtering the precipitated substances through a filter screen.
And the oxidation module 10 is connected with the main control module 4 and is used for carrying out oxidation treatment on the precipitated substances through an oxidant.
And the display module 11 is connected with the main control module 4 and used for displaying the monitoring video, the detected heavy metal data and the dust concentration data through a display.
The invention is further described with reference to specific examples.
Example 1
The weighing method of the weighing module 5 provided by the invention comprises the following steps:
(1) conveying the dust gas to be measured into a measurement place, taking the number value of dust in a unit volume as sample data, and classifying the number values of the dust according to three types of particle sizes of 0.3-2.5 mu m, 2.5-10 mu m and more than 10 mu m, wherein the three types of particle sizes are respectively marked as NPM0.3-2.5, NPM2.5-10 and NPM 10.
(2) Calculating the weight of all dust with the particle size of less than or equal to 2.5 mu m in unit volume based on the sample data obtained in the step (1), and marking the weight as GPM2.5, wherein the calculation formula is as follows: GPM2.5 ═ NPM0.3-2.5 Xk1Wherein k is1To convert the coefficients, k1＝1.5×10-7。
(3) Calculating the weight of all dust with the particle size of less than or equal to 10 μm in unit volume based on the sample data obtained in the step (1), and marking the weight as GPM10, wherein the calculation formula is as follows: GPM10 ═ NPM2.5-10 xk2+ GPM2.5, where k2To convert the coefficients, k2＝0.8×10-4。
(4) And (4) converting the numerical values of all the dust with different particle diameters in the same type of dust particles into the numerical value of the dust with the same particle diameter by weighting.
Example 2
The calculation method of the conversion coefficient provided by the invention comprises the following steps:
sampling dust with PM0.3-2.5, obtaining total weight of 15 mug in every 10 ten thousand on average, and calculating to obtain k in unit volume1＝1.5×10-7。
The dust of PM2.5-10 was sampled, the total weight was 8. mu.g per 1000 obtained on average, and k was calculated per unit volume2＝0.8×10-4。
The invention provides a dust of the same kind, wherein the weight calculation of the dust with the particle size of 2.5 μm and the weight calculation of the dust with the particle size of 10 μm are respectively carried out, the weight calculation is respectively represented by the number of the dust with the particle size of 0.3 μm, and the conversion coefficients are respectively 100 and 1000, namely, in the dust particles of the same kind, the volume of the dust with the particle size of 2.5 μm is equivalent to the volume of 100 dust with the particle size of 0.3 μm, and the volume of the dust with the particle size of 10 μm is equivalent to the volume of 1000 dust with the particle size of 0.3 μm.
Example 3
The digestion module 7 provided by the invention has the following digestion method:
1) and conveying the industrial dust to the digestion furnace through a conveying pipeline. The casting dust is digested with dilute acid for 50 min.
2) Then digesting with concentrated acid and simultaneously carrying out ultrasonic treatment for 80 min.
3) After the concentrated acid digestion is finished, the concentrated acid is digested by an oxidant until no foam exists.
4) Finally digesting with concentrated acid for 20 min.
The diluted acid in the step 1) is a diluted nitric acid solution of 6mol/L or a diluted hydrochloric acid solution of 0.5mol/L, and the weight ratio of dust to the diluted acid solution is 1: 6.
The concentrated acid in the step 2) and the step 4) is one of concentrated nitric acid of 15mol/L, aqua regia or hydrofluoric acid of 16mol/L, and the weight ratio of the dust sample to the concentrated acid solution is 1: 6.
The oxidant in the step 3) provided by the invention is H with the mass fraction of 30%2O2The weight ratio of the dust to the oxidant is 10: 1.
Example 5
As shown in fig. 2, the method for recovering industrial powdered waste according to the embodiment of the present invention includes:
and S101, monitoring the recovery process of the industrial powdery waste by using a camera through the video monitoring module 1. And the heavy metal content of the industrial powdery waste is detected by the heavy metal detector through the heavy metal detection module 2. Industrial dust concentration data is detected by the dust concentration detection module 3 using a dust detector.
S102, the main control module 4 measures the weight of the industrial dust through the weighing module 5; spraying the industrial dust by using a spray tower through a spray module 6; digesting the industrial dust through a digestion module 7; carrying out precipitation reaction with dust by using a chemical agent through a precipitation module 8; the precipitated substances are filtered by the filter module 9 with a filter screen.
S103, the oxidation module 10 oxidizes the precipitation substance with an oxidizing agent.
And S104, displaying the monitoring video, the detected heavy metal data and the dust concentration data by using a display through the display module 11.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When used in whole or in part, can be implemented in a computer program product that includes one or more computer instructions. When loaded or executed on a computer, cause the flow or functions according to embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.)). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A method for recovering industrial powdery waste, comprising: :
firstly, conveying dust gas to be measured into a measurement place, sampling a dust number value in a unit volume as sample data, and classifying the dust number value according to three types of particle sizes of 0.3-2.5 mu m, 2.5-10 mu m and more than 10 mu m, wherein the three types of particle sizes are respectively marked as NPM0.3-2.5, NPM2.5-10 and NPM 10;
secondly, calculating the weight of all dust with the particle size less than or equal to 2.5 μm in unit volume based on the sample data obtained in the first step, and marking as GPM2.5, wherein the calculation formula is as follows: GPM2.5 ═ NPM0.3-2.5 Xk1Wherein k is1To convert the coefficients, k1＝1.5×10-7；
Thirdly, calculating all the dust with the grain diameter less than or equal to 10 μm in unit volume based on the sample data obtained in the first stepWeight, reported as GPM10, PM2.5-10 sampled dust, average total weight per 1000 acquisitions 8 μ g, calculated as follows: GPM10 ═ NPM2.5-10 xk2+ GPM2.5, where k2To convert the coefficients, k2＝0.8×10-4；
Step four, sampling the dust with PM0.3-2.5, obtaining the total weight of 15 mu g in every 10 ten thousand on average, and calculating to obtain k in unit volume1＝1.5×10-7；
Step five, weighting and converting all dust numerical values with different particle diameters in the same type of dust particles into dust numerical values with the same particle diameter;
step six, respectively carrying out weighted calculation on the dust with the particle size of 2.5 microns and the dust with the particle size of 10 microns in the same type of dust particles, wherein the dust with the particle size of 0.3 microns is represented by the number of the dust with the particle size of 0.3 microns, and the conversion coefficients are respectively 100 and 1000, namely, in the same type of dust particles, the volume of each dust with the particle size of 2.5 microns is equivalent to the volume of 100 dust with the particle size of 0.3 microns, and the volume of each dust with the particle size of 10 microns is equivalent to the volume of 1000 dust with the particle size of 0.3 microns;
step seven, the industrial dust processed in the step six is transmitted to a digestion furnace through a transmission pipeline; firstly, digesting casting dust with dilute acid for 50 min;
step eight, digesting with concentrated acid and simultaneously carrying out ultrasonic treatment for 80 min;
step nine, digesting the mixture with an oxidant until no foam exists after the concentrated acid digestion is finished;
and step ten, finally digesting for 20min by concentrated acid.
2. The method for recycling industrial powdery waste as set forth in claim 1, wherein the step one is preceded by the steps of: monitoring the recovery process of industrial powdery waste by a camera through a video monitoring module; detecting the heavy metal content of the industrial powdery waste by using a heavy metal detector through a heavy metal detection module; passing through a dust concentration detection module; detecting industrial dust concentration data by using a dust detector;
the main control module measures the weight of the industrial dust through the weighing module; and spraying the industrial dust by using a spray tower through a spray module.
3. The method for recycling industrial powdery waste as claimed in claim 1, wherein the diluted acid in the seventh step is a dilute nitric acid solution of 6mol/L or a dilute hydrochloric acid solution of 0.5mol/L, and the weight ratio of the dust to the dilute acid solution is 1: 6.
4. The method for recycling industrial powdery waste as claimed in claim 1, wherein the concentrated acid in the eighth and ninth steps is one of concentrated nitric acid of 15mol/L, aqua regia and hydrofluoric acid of 16mol/L, and the weight ratio of the dust sample to the concentrated acid solution is 1: 6.
5. The method for recycling industrial powdery waste as set forth in claim 1, wherein the oxidizing agent in the ninth step is H with a mass fraction of 30%2O2The weight ratio of the dust to the oxidant is 10: 1.
6. The method for recycling industrial powdery waste as set forth in claim 1, wherein after the ninth step, the precipitation reaction is carried out with the dust by a precipitation module using a chemical agent; and filtering the precipitated substances by using a filter screen through a filter module.
7. The method for recycling industrial powdery waste as set forth in claim 6, wherein the precipitated material is filtered by the filter net through the filter module, and then oxidized by the oxidizing agent through the oxidation module;
and the display is used for displaying the monitoring video, the detected heavy metal data and the dust concentration data through the display module.
8. An industrial powdery waste recovery system, comprising:
the video monitoring module is connected with the main control module and is used for monitoring the recovery process of industrial powdery waste through a camera;
the heavy metal detection module is connected with the main control module and is used for detecting the content of heavy metal in the industrial powdery waste through a heavy metal detector;
the dust concentration detection module is connected with the main control module and used for detecting industrial dust concentration data through a dust detector;
the main control module is connected with the video monitoring module, the heavy metal detection module, the dust concentration detection module, the weighing module, the spraying module, the digestion module, the precipitation module, the filtering module, the oxidation module and the display module and is used for controlling each module to normally work through the main control computer;
the weighing module is connected with the main control module and used for measuring the weight of the industrial dust;
the spraying module is connected with the main control module and is used for spraying the industrial dust through the spraying tower;
the digestion module is connected with the main control module and is used for carrying out digestion operation on the industrial dust;
the precipitation module is connected with the main control module and is used for carrying out precipitation reaction with dust through a chemical agent;
the filtering module is connected with the main control module and is used for filtering the precipitated substances through a filter screen;
the oxidation module is connected with the main control module and is used for carrying out oxidation treatment on the precipitated substances through an oxidant;
and the display module is connected with the main control module and used for displaying the monitoring video, the detected heavy metal data and the dust concentration data through a display.
9. A computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface for implementing the method of any one of claims 1 to 7 when executed on an electronic device.
10. A computer-readable storage medium storing instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 7.
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| CN111842425A (en) * | 2020-07-17 | 2020-10-30 | 唐山聚人环保科技有限公司 | Environment-friendly device for mixed treatment and recycling of industrial wastes and control method thereof |
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