CN115254879B - Slag soil improvement device with carbon fixing function, slag soil improvement method and filling material - Google Patents
Slag soil improvement device with carbon fixing function, slag soil improvement method and filling material Download PDFInfo
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- CN115254879B CN115254879B CN202210789267.8A CN202210789267A CN115254879B CN 115254879 B CN115254879 B CN 115254879B CN 202210789267 A CN202210789267 A CN 202210789267A CN 115254879 B CN115254879 B CN 115254879B
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- 239000002689 soil Substances 0.000 title claims abstract description 77
- 239000002893 slag Substances 0.000 title claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000011049 filling Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 title abstract description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 166
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 83
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000003756 stirring Methods 0.000 claims abstract description 49
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 16
- 239000002699 waste material Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 description 16
- 238000003763 carbonization Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- -1 dregs Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
- B09B3/27—Binding by sodium silicate, e.g. cement or water glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
- B09B3/38—Stirring or kneading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/70—Chemical treatment, e.g. pH adjustment or oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/90—Soil, e.g. excavated soil from construction sites
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The application relates to a slag soil improvement device with a carbon fixing function, a slag soil improvement method and a filling material, wherein the improvement device comprises a feeding device, a stirring device and a detection device; the stirring device comprises a shell, a feeding valve port, an air inlet, a water inlet and a detection port, wherein the feeding valve port, the air inlet, the water inlet and the detection port are formed in the upper cover of the shell; the feeding device comprises a feeding assembly, an air inlet assembly and a water inlet assembly, wherein the feeding assembly is positioned above a feeding valve port and is used for conveying raw soil and curing agent, and the raw soil is building slag soil; the air inlet assembly and the water inlet assembly are respectively communicated with the air inlet and the water inlet through pipelines and are used for transporting carbon dioxide and water; the upper cover of the shell is provided with a variable frequency motor, the output end of the variable frequency motor penetrates through the upper cover of the shell and is positioned in the shell, and the output end of the variable frequency motor is connected with a stirrer; the detection device is arranged at the detection port and comprises a carbon dioxide concentration sensor and a pressure sensor; the carbon dioxide concentration sensor and the pressure sensor are used for detecting the change of the pressure concentration of the carbon dioxide in real time, so that the recycling of the resources of the dregs is realized.
Description
Technical Field
The application relates to the technical field of solidification and improvement of building dregs, in particular to a device and a method for improving dregs with a carbon fixing function and a filler.
Background
At present, the CCUS, namely the capturing, utilizing and sealing technology of carbon dioxide, is a new development trend of global treatment, can effectively relieve adverse effects of global warming, and is an important technical path for realizing carbon peak and carbon neutralization in China.
In municipal engineering and city planning buildings, according to the speculation of the prior art, the amount of waste building dregs in China reaches 6.28 hundred million tons by 2022, wherein the waste building dregs comprise sludge, dregs, waste soil, engineering dregs and engineering mud, and a large amount of waste land resources and environmental pollution are caused by stacking. If the urban waste building residue soil can be used for preparation improvement, the method can be used for filling soil and can reduce the pollution of waste concrete to the environment.
Disclosure of Invention
According to the problems, the application provides a slag soil improvement device with a carbon fixing function, a slag soil improvement method and a filler, and the slag soil is recycled, so that the carbon fixing of building soil slag and a curing agent in the stirring process can be effectively realized. The following technical scheme is adopted:
a dregs improving device with carbon fixing function comprises a feeding device, a stirring device and a detecting device;
the stirring device comprises a shell, a feed inlet, an air inlet, a water inlet and a detection port which are arranged on the upper cover of the shell, and a discharge port is arranged at the bottom of the shell for discharging;
the feeding device comprises a feeding assembly, an air inlet assembly and a water inlet assembly, wherein the feeding assembly is positioned above the feeding port and is used for conveying raw soil and curing agent;
the raw soil is building slag soil and comprises engineering slag soil, engineering slurry and waste soil;
the air inlet assembly and the water inlet assembly are respectively communicated with the air inlet and the water inlet through pipelines and are used for transporting carbon dioxide and water;
the upper cover of the shell is provided with a variable frequency motor, the output end of the variable frequency motor penetrates through the upper cover of the shell and is positioned in the shell, and the output end of the variable frequency motor is connected with a stirrer;
the detection device is arranged at the detection port and comprises a carbon dioxide concentration sensor and a pressure sensor;
the carbon dioxide concentration sensor and the pressure sensor are used for detecting the change of the pressure concentration of the carbon dioxide in real time.
Optionally, the device further comprises an auxiliary device, the auxiliary device comprising a vacuum pump;
an air outlet is formed in the upper cover of the shell and is communicated with a vacuum pump pipeline.
Optionally, the air inlet component comprises a carbon dioxide high-pressure air storage tank, a one-way valve and a carbon dioxide flowmeter;
the one-way valve and the carbon dioxide flowmeter are sequentially arranged on a pipeline communicated with the carbon dioxide high-pressure air storage tank and the air inlet;
the carbon dioxide flowmeter is used for adjusting the concentration of carbon dioxide entering the shell and controlling the one-way valve to switch on and off the air inlet of the pipeline.
Optionally, the water inlet assembly comprises a water storage tank, an electromagnetic valve and a flowmeter;
the electromagnetic valve and the flowmeter are sequentially arranged on a pipeline communicated with the water storage tank and the water inlet;
the flowmeter adjusts the water quantity entering the shell and controls the electromagnetic valve to switch on and off the water inlet of the pipeline.
Optionally, the feeding component is a conveying belt, and the output end of the conveying belt is positioned above the feeding port;
the feeding valve port is provided with a feeding valve.
Optionally, the stirrer is a frame stirrer, and a stirring shaft of the frame stirrer is detachably connected with the output end of the motor.
Optionally, the detecting device further comprises a thermometer for detecting temperature changes in the housing.
Optionally, the shell is detachably connected with the upper cover of the shell.
A method for improving slag soil with carbon fixing function, which is applied to the slag soil improving device of any one of the above steps as follows:
first, a first step; the stirring device is electrified and rotated, raw soil and curing agent are conveyed through the feeding assembly and are put into the shell from the feeding port, and the raw soil and the curing agent collide with the stirrer for mixing;
second, the second; according to the quality of the proportioned feeding, the feeding component stops feeding and closes the feeding port;
third, the third; then the air inlet component is filled with carbon dioxide with corresponding pressure concentration, and then the air inlet is closed;
fourth, a fourth step; then the water inlet assembly is filled with corresponding water, and the stirring speed of the motor is adjusted while water is added;
fifth, a fifth step; after a period of reaction, the pressure and the concentration of the carbon dioxide in the shell are detected by a carbon dioxide pressure concentration sensor for a detection port, and then the discharge port is opened for discharging.
The filler is used for filling parks or roads, and is prepared by the slag soil improvement method with the carbon fixing function.
In summary, the application has the following beneficial effects:
1. according to the application, the building material is prepared in the process that raw soil is introduced into carbon dioxide in the stirring process to form improved soil, and the raw soil and the curing agent are fully contacted with the carbon dioxide in the stirring process in the water environment, so that the resource utilization rate of building slag soil is improved, the mechanical property of the building raw soil is improved, and the capture, utilization and sealing of the carbon dioxide are realized, thereby realizing the purpose of reducing carbon dioxide emission.
2. The stirring device adopts the frame type stirring device, so that raw soil and a curing agent are fully mixed, after carbon dioxide is introduced, the raw material and the carbon dioxide are added, the frame type stirring contact area is large, the carbonization reaction rate can be improved, the motor adopts the variable frequency motor, and different stirring rates can be adopted for different stirring stages so as to achieve the optimal absorption of the carbon dioxide, thereby improving the mechanical property of the improved soil.
3. The method is characterized in that the raw materials are subjected to pre-stirring treatment before carbon dioxide is introduced, so that the modified soil is guaranteed to be carbonized uniformly in the raw materials when reacting with the carbon dioxide, most of carbonization reaction occurs in early hydration reaction, and after the carbon dioxide is introduced, the cement curing agent and cement hydration products can be quickly carbonized with the carbon dioxide under the condition of water, so that after the raw materials are uniformly stirred and mixed with the soil and the curing agent, the carbon dioxide is introduced, water is added in batches to ensure that the carbon dioxide fully reacts with the raw materials and the hydration products.
4. The device can be used for improving soil and slag, is low in cost, can be applied to actual working conditions as long as certain strength is achieved, achieves the aim of recycling utilization by recycling slag soil and the like, is used for fixing carbon in improvement, can improve the strength of improved soil, is tested in a laboratory, is obviously improved in strength compared with the improved soil without fixing carbon after fixing carbon, can neutralize the ph value of partial soil, and can increase the utilization and the sealing of carbon dioxide in long term.
Drawings
Fig. 1 is a schematic overall structure of the present embodiment.
Reference numerals illustrate: 1. a housing; 11. a feed inlet; 12. a water inlet; 13. an exhaust port; 14. a detection port; 15. a discharge port; 16. a feed valve; 2. a feeding device; 21. a conveyor belt; 22. a carbon dioxide high-pressure gas storage tank; 23. a one-way valve; 24. a carbon dioxide flow meter; 25. a water storage tank; 26. an electromagnetic valve; 27. a flow meter; 3. a stirring device; 31. a motor; 32. a stirring shaft; 33. a frame stirrer; 4. A detection device; 41. a carbon dioxide concentration sensor and a pressure sensor; 5. an auxiliary device; 51. a vacuum pump; A. raw materials; B. carbon dioxide; C. and (3) water.
Detailed Description
The present application will be described in further detail with reference to fig. 1.
The embodiment of the application discloses a slag soil improvement device with a carbon fixing function, which can realize that slag soil can absorb carbon dioxide B in the stirring process, and comprises a feeding device 2, a stirring device 3, a detection device 4 and other auxiliary devices 5.
As shown in fig. 1, the stirring device 3 comprises a shell 1 and a stirrer, wherein a stirring reaction chamber is arranged in the shell 1, and the shell is wear-resistant and corrosion-resistant and meets the technological requirements of chemical reaction. The upper cover of the shell 1 is provided with a feed inlet 11, an air inlet, a water inlet 12, a detection port 14 and an air outlet 13, so as to ensure the entry of the raw material A, the sealing of the shell is mechanical sealing, the feed inlet 11 is provided with a feed valve 16, and the feed inlet 11 and the feed valve are closed after the entry of the raw material A, so that the reaction of the carbon dioxide B in a closed cavity is ensured.
The shell 1 body bottom is provided with discharge opening 15, the variable frequency motor 31 is installed to the shell 1 upper cover, its output runs through the shell 1 upper cover and is located the shell 1, its output is connected with frame agitator 33, the (mixing) shaft 32 of frame agitator 33 adopts can dismantle the output of connection at motor 31, the body of frame agitator 33 also adopts can dismantle the connection, shell 1 is for dismantling the connection rather than the upper cover, detachable structure is for installing through the screw nut, do not adopt modes such as welding, detachable structure is convenient to unload back and later stage washs, the maintenance work is conveniently carried out, convenient and fast just easily clear up.
The device adopts the frame stirrer 33 and the variable frequency motor 31, the frame stirrer 33 can ensure that the raw materials A are uniformly mixed so as to fully react, the variable frequency speed regulation of the motor 31 can be carried out by changing the frequency or the voltage, different stirring speeds can be adopted for different stirring stages so as to achieve the optimal absorption of the carbon dioxide B, the stirring time and the stirring speed can be manually controlled and can be uniformly controlled by a computer, the speed and the stirring time can be set, and the speed of the motor 31 is different according to the conditions of different soil mixing ratios and the like of different working conditions.
The feeding device 2 is divided into a feeding component, an air inlet component and a water inlet component, the feeding component is a conveying conveyor belt 21, the output end of the feeding component is positioned above the feeding port 11, the feeding port 11 is provided with a feeding valve 16, and the opening and closing of the feeding valve 16 can be controlled to control the input amount of the raw material A. The raw material A and the curing agent are mixed, the raw material A is generally construction muck, and comprises engineering muck and engineering slurry, such as waste soil generated in a stone digging direction in the construction process or waste mud generated in a shield, which is resource recovery, and also comprises silt, muck and waste soil, can be recovered after pretreatment, is recycled and improved, is maintained after a certain strength, and is then applied to roadbed fillers, park fillers and the like.
The air inlet device comprises a carbon dioxide high-pressure air storage tank 22, a one-way valve 23 and a carbon dioxide flowmeter 24, wherein the one-way valve 23 and the carbon dioxide flowmeter 24 are sequentially arranged on a pipeline which is communicated with the carbon dioxide air storage tank 22 and the air inlet, the carbon dioxide flowmeter 24 is used for adjusting the concentration of carbon dioxide B entering the shell 1 and controlling the electromagnetic valve 26 to switch on and switch off the air inlet of the pipeline, when the air is thrown, the carbon dioxide flowmeter 24 records the concentration of the carbon dioxide B thrown into the shell 1, and when the concentration reaches a preset value, the one-way valve 23 is controlled to close the pipeline, and the air inlet is stopped.
The water inlet device comprises a water storage tank 25, an electromagnetic valve 26 and a flowmeter 27, wherein the electromagnetic valve 26 and the flowmeter 27 are sequentially arranged on a pipeline communicated with the water inlet 12 of the water storage tank 25, the flowmeter 27 adjusts the water quantity entering the shell 1 and controls the electromagnetic valve 26 to switch on and switch off the water inlet of the pipeline, when water is fed, the flowmeter 27 records the water quantity entering the shell 1, and when the water quantity reaches a preset value, the electromagnetic valve 26 is controlled to close the pipeline, and water feeding is stopped.
In the water adding process, water is added in batches at intervals to ensure that the carbon dioxide B fully reacts with the raw material A and the water C-shaped product, the stirring speed and the stirring time are different before and after water addition, and the stirring speed and the stirring time are adjusted through the variable frequency motor 31 after water addition, so that the stirring speed is improved, the raw material A can quickly react with the carbon dioxide B in the early water C-shaped reaction, and the absorption of the carbon dioxide B can be improved by adopting different stirring speeds and different treatment times before and after water addition, so that the improved soil is ensured to be evenly carbonized in the modified soil when reacting with the carbon dioxide B.
The detecting device 4 comprises a carbon dioxide concentration sensor and a pressure sensor 41, the detecting device 4 is arranged at the detecting port 14, and one end of the carbon dioxide concentration sensor and the pressure sensor 41 penetrates through the detecting port 14 and is positioned at the upper end of the stirring reaction chamber in the shell 1 and is used for detecting the change of the pressure concentration of the carbon dioxide B in real time. After the raw soil is reacted with the carbon dioxide B when the carbon dioxide concentration sensor and the pressure sensor 41 detect that the pressure and the concentration in the stirring reaction chamber are kept stable, the reaction is stopped, at this time, the discharge opening 15 can be opened for discharging, and the improved soil fully reacted with the carbon dioxide B can be maintained. Preferably, the detecting means 4 may also be provided with a thermometer for detecting a temperature change in the housing 1.
Preferably, the device is further provided with an auxiliary device 5, the auxiliary device 5 comprises a vacuum pump 51, an air outlet is formed in the upper cover of the shell 1 and is communicated with the vacuum pump 51 in a pipeline mode, the vacuum pump 51 is used for maintaining a vacuum state in the stirring reaction chamber before introducing the carbon dioxide B, the pressure concentration of the carbon dioxide B entering the container is guaranteed, and carbonization reaction between the raw materials A in stirring is stably carried out.
The application relates to a method for improving slag soil with carbon fixing function, which comprises the following steps:
first, a first step; after the stirring device 3 is electrified, the motor 31 drives the frame stirrer to rotate in the stirring reaction cavity of the shell 1, meanwhile, raw soil and curing agent which are preliminarily and uniformly mixed are conveyed by the conveying belt 21 to be input into the stirring reaction cavity from the feed inlet 11, and the raw soil and the curing agent collide with the frame stirrer 33 in the input process, so that the raw soil and the curing agent are mixed again.
Second, the second; according to the quality of the proportioned feed, the feeding component stops feeding, the feeding valve 16 of the feed inlet 11 is closed, the vacuum pump 51 of the auxiliary element starts to work, and the gas in the stirring reaction chamber is pumped from the gas outlet 13.
Third, the third; then the check valve 23 is opened, carbon dioxide B with corresponding pressure concentration is introduced from the carbon dioxide high-pressure gas storage tank 22 according to the flowmeter 27, and then the valve is closed.
Fourth, a fourth step; the electromagnetic valve 26 is opened, water C added into the water storage tank is added into the shell 1 from the water inlet 12, when the water C passing through the flowmeter 27 reaches a specified flow rate, then the electromagnetic valve 26 is closed, and the stirring rate of the motor 31 is adjusted while water is added. The stirring rate is increased, and the frame stirrer 33 stirs the raw soil, the curing agent and the water C, so that the contact area with the carbon dioxide B is ensured, the carbonization reaction is fully generated under the condition of the water C, and uniform carbonization is ensured. In the water addition process, water C is added in batches at intervals to ensure that carbon dioxide B and raw material A and water C-formed products are fully carbonized.
Fifth, a fifth step; after a certain period of time has elapsed, the pressure and concentration of carbon dioxide B in the casing 1 are detected by the carbon dioxide concentration sensor and pressure sensor 41 from the detection port 14, and then the discharge port 15 is opened to discharge the material, thereby curing the modified soil fully reacted with carbon dioxide B.
The modified soil prepared by the method can be used as a filler for filling roads or parks, the recycling of waste residue soil and the sealing and utilizing technology of carbon dioxide are combined, carbon dioxide is introduced in the process of treating and modifying building residue soil and cement curing agent to form the modified soil, the residue soil is recycled, the physical property of the modified soil is enhanced to a certain extent by carbonization reaction of the carbon dioxide, and therefore energy conservation and emission reduction are realized, and low-carbon development is realized.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. The utility model provides a dregs improvement device with solid carbon function which characterized in that: comprises a feeding device, a stirring device and a detection device;
the stirring device comprises a shell, a feed inlet, an air inlet, a water inlet and a detection port which are arranged on the upper cover of the shell, and a discharge port is arranged at the bottom of the shell for discharging;
the feeding device comprises a feeding assembly, an air inlet assembly and a water inlet assembly, wherein the feeding assembly is positioned above the feeding port and is used for conveying raw soil and curing agent;
the raw soil is building slag soil and comprises engineering slag soil, engineering slurry and waste soil;
the air inlet assembly and the water inlet assembly are respectively communicated with the air inlet and the water inlet through pipelines and are used for transporting carbon dioxide and water; after the carbon dioxide with the specified concentration is introduced into the air inlet component, water is fed into the air inlet component at intervals of batches;
the upper cover of the shell is provided with a variable frequency motor, the output end of the variable frequency motor penetrates through the upper cover of the shell and is positioned in the shell, and the output end of the variable frequency motor is connected with a stirrer;
the detection device is arranged at the detection port and comprises a carbon dioxide concentration sensor and a pressure sensor;
the carbon dioxide concentration sensor and the pressure sensor are used for detecting the change of the pressure concentration of the carbon dioxide in real time.
2. The slag soil improvement device with carbon fixing function according to claim 1, wherein: the apparatus further comprises an auxiliary device comprising a vacuum pump;
an air outlet is formed in the upper cover of the shell and is communicated with a vacuum pump pipeline.
3. The slag soil improvement device with carbon fixing function according to claim 1, wherein: the air inlet component comprises a carbon dioxide high-pressure air storage tank, a one-way valve and a carbon dioxide flowmeter;
the one-way valve and the carbon dioxide flowmeter are sequentially arranged on a pipeline communicated with the carbon dioxide high-pressure air storage tank and the air inlet;
the carbon dioxide flowmeter is used for adjusting the concentration of carbon dioxide entering the shell and controlling the one-way valve to switch on and off the air inlet of the pipeline.
4. The slag soil improvement device with carbon fixing function according to claim 1, wherein: the water inlet assembly comprises a water storage tank, an electromagnetic valve and a flowmeter;
the electromagnetic valve and the flowmeter are sequentially arranged on a pipeline communicated with the water storage tank and the water inlet;
the flowmeter adjusts the water quantity entering the shell and controls the electromagnetic valve to switch on and off the water inlet of the pipeline.
5. The slag soil improvement device with carbon fixing function according to claim 1, wherein: the feeding assembly is a conveying conveyor belt, and the output end of the feeding assembly is positioned above the feeding port;
the feed inlet is provided with a feed valve.
6. The slag soil improvement device with carbon fixing function according to claim 1, wherein: the stirrer is a frame stirrer, and a stirring shaft of the stirrer is detachably connected with the output end of the motor.
7. The slag soil improvement device with carbon fixing function according to claim 1, wherein: the detection device further comprises a thermometer for detecting temperature changes in the housing.
8. The slag soil improvement device with carbon fixing function according to claim 1, wherein: the shell is detachably connected with the upper cover of the shell.
9. A method for improving slag soil with carbon fixing function is characterized in that: use of a slag modifying device according to any one of claims 1 to 8, comprising the steps of:
first, a first step; the stirring device is electrified and rotated, raw soil and curing agent are conveyed through the feeding assembly and are put into the shell from the feeding port, and the raw soil and the curing agent collide with the stirrer for mixing;
second, the second; according to the quality of the proportioned feeding, the feeding component stops feeding and closes the feeding port;
third, the third; then the air inlet component is filled with carbon dioxide with corresponding pressure concentration, and then the air inlet is closed;
fourth, a fourth step; then the water inlet assembly is filled with corresponding water, and the stirring speed of the motor is adjusted while water is added;
fifth, a fifth step; after a period of reaction, the pressure and the concentration of the carbon dioxide in the shell are detected by a carbon dioxide pressure concentration sensor for a detection port, and then the discharge port is opened for discharging.
10. A filler for filling a park or road, characterized by: the method for improving the slag soil with the carbon fixing function according to claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210789267.8A CN115254879B (en) | 2022-07-06 | 2022-07-06 | Slag soil improvement device with carbon fixing function, slag soil improvement method and filling material |
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| CN202210789267.8A CN115254879B (en) | 2022-07-06 | 2022-07-06 | Slag soil improvement device with carbon fixing function, slag soil improvement method and filling material |
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| CN115254879B true CN115254879B (en) | 2023-09-29 |
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| CN107825588A (en) * | 2017-11-14 | 2018-03-23 | 中国矿业大学 | A kind of fresh concrete absorbs CO2Agitating device |
| CN110203932A (en) * | 2019-06-05 | 2019-09-06 | 东南大学 | A kind of device and preparation method of foam concrete solidified carbon dioxide |
| CN210711305U (en) * | 2019-10-08 | 2020-06-09 | 成都大学 | Continuous carbonization device for reinforced recycled concrete aggregate |
| CN211964558U (en) * | 2020-01-16 | 2020-11-20 | 福建南方路面机械股份有限公司 | Building dregs recycling equipment |
| CN111498886A (en) * | 2020-04-20 | 2020-08-07 | 华电电力科学研究院有限公司 | By using pure CO2Device and method for treating calcium-based alkaline residues |
| CN113233866A (en) * | 2021-05-26 | 2021-08-10 | 深圳大学 | 3D printing magnesium oxysulfate cement concrete product and maintenance method thereof |
| CN113264752A (en) * | 2021-05-26 | 2021-08-17 | 天应(深圳)生态建材科技有限公司 | 3D printed green magnesium-based cement concrete product and maintenance method thereof |
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