CN214554468U - Impurity removal system device for carbide slag - Google Patents
Impurity removal system device for carbide slag Download PDFInfo
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- CN214554468U CN214554468U CN202120471113.5U CN202120471113U CN214554468U CN 214554468 U CN214554468 U CN 214554468U CN 202120471113 U CN202120471113 U CN 202120471113U CN 214554468 U CN214554468 U CN 214554468U
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Abstract
The utility model provides an impurity removal system device for carbide slag, which comprises an oxidation flotation device, wherein the oxidation flotation device comprises a shell, an inlet of the shell is connected with a micro-nano bubble generating device, and the micro-nano bubble generating device is externally connected with an air source; the top outlet of the shell is connected with a scum collecting device; the middle outlet of the shell is connected with a fine slag collecting device, and the middle outlet of the shell is also connected with the micro-nano bubble generating device; a coarse slag collecting device at the bottom outlet of the shell; outlets of the scum collecting device, the fine slag collecting device and the coarse slag collecting device are all connected into a storage tank, and an outlet end of the storage tank is connected to the top of the oxidation flotation device. The utility model discloses an oxidation and the separation coupling of impurity in the carbide slag are favorable to improving the quality of the compulsory oxidation speed and the desulfurization gypsum of carbide slag desulfurization in-process.
Description
Technical Field
The utility model belongs to the technical field of the impurity desorption, a impurity desorption system device for carbide slag is related to.
Background
The carbide slag is industrial solid waste formed in the acetylene production process, the discharge amount is large, and the annual production amount of the carbide slag in China is more than 3000 million tons in 2010-2019. The chemical components of the carbide slag are mainly calcium hydroxide, and the carbide slag contains impurities such as coke particles, ferrosilicon, aluminum silicon minerals and the like, and a small amount of reducing impurities such as sulfides, phosphide and the like. The calcium content in the carbide slag is high, and the carbide slag can replace limestone to carry out flue gas desulfurization. However, the coke remaining in the carbide slag can influence the quality of the carbide slag in the desulfurized gypsum, so that the subsequent utilization of the carbide slag-based desulfurized gypsum is influenced; the large-particle and high-hardness ferrosilicon particles formed in the calcium carbide production process have the risk of blocking and wearing a desulfurization system; in addition, the reductive impurities in the carbide slag can influence the forced oxidation process of the desulfurized gypsum, and influence the filtration of the desulfurized gypsum and the quality of the gypsum.
CN102091525A discloses a preparation device and a process for carbide slag desulfurization slurry recovered from ferrosilicon, and discloses a preparation device for carbide slag desulfurization slurry applicable to a carbide slag-gypsum method flue gas desulfurization system, which comprises a weighing feeder, a slurry water inlet pipe, a slag flushing tank, a slurry dissolving tank, a slurry intermediate pump, a linear vibrating screen, an intermediate tank, a finished slurry pump, a slurry deironing machine, a rotary vibrating screen and a finished slurry tank which are connected in sequence, wherein the slurry dissolving tank, the intermediate tank and the finished slurry tank are all provided with a stirrer. The utility model also discloses a technology of utilizing the device to prepare carbide slag desulfurization slurry, obtain carbide slag desulfurization slurry after weighing, crossing bars, chemical pulp, primary screening, meticulous screening.
CN103803627A discloses a separation edulcoration method of white mud/carbide slag-gypsum method desulfurization gypsum thick liquid, and the device includes first grade separator tank separator and second grade separator tank separator, first grade separator tank separator and second grade separator tank separator include: the bottom and the middle part of the stirring tank are communicated with each other; the stirring tank is internally provided with a stirring paddle, a slurry pipe and a circulating water pipe, and the bottom of the stirring tank is provided with a slurry outlet; the middle part of the settling tank is provided with a suspension liquid outlet; and a slurry outlet of the primary separation device of the primary settling tank is communicated with a slurry pipe of the secondary separation device of the secondary settling tank.
CN102266715A discloses a method for producing a desulfurizer by using carbide slag, which is divided into a dry process and a wet process according to the source of the carbide slag, wherein the raw material of the dry process is carbide slag generated by dry acetylene, and the raw material of the wet process is carbide slag slurry generated by wet acetylene; the dry process comprises the following steps: (1) cyclone separation is carried out to remove heavy impurities such as silicon, iron and the like and carbide slag particles with fineness larger than 4mm in the carbide slag; (2) filtering and separating the raised dust under negative pressure, intercepting particles with the diameter of more than 0.04mm in the carbide slag at one time in a solid state, and reducing the water content to be below 5%; (3) drying, and controlling the water content to be 1-3 percent to obtain dry desulfurizer powder; (4) pulping, adding water according to the final solid content of 15-30%, and uniformly stirring to obtain a liquid desulfurizer; the wet process comprises the following steps: (1) settling washed sand, and primarily removing large impurities and ferrosilicon particles in the carbide slag slurry; (2) selectively filtering, and removing solid particles larger than 0.04mm by controlling the thickness of a filter cake; (3) filtering and concentrating, wherein the solid content is controlled to be 15-30 percent, and the product is a liquid desulfurizer; (4) dehydrating and drying, and finally controlling the water content to be 1-3 percent, namely the desulfurizer dry powder.
However, the above processes separate impurities such as ferrosilicon or oxidize reducing impurities, and in order to separate impurities and oxidize reducing impurities, multiple processes need to be connected in series, which results in a long overall process flow and an increase in overall cost, and is not suitable for industrial application of carbide slag desulfurization.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an impurity desorption system device for carbide slag, the utility model discloses utilize coke, ferrosilicon impurity granule and other granule settlement rate difference and micro-nano bubble to this characteristic of the adhesive force difference of different fine particles, combine micro-nano bubble to the quick oxidation of reducing substance, realized the oxidation of impurity in the carbide slag and select separately the coupling, be favorable to improving the quality of the compulsory oxidation rate and the desulfurization gypsum of carbide slag desulfurization in-process.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides an impurity desorption system device for carbide slag, impurity desorption system device include the oxidation flotation device, the oxidation flotation device include the casing, the micro-nano bubble generating device of casing entry connection, the external air supply of micro-nano bubble generating device.
The top outlet of the shell is connected with a scum collecting device, upper layer slurry in the shell overflows into the scum collecting device, and the scum collecting device is used for filtering the upper layer slurry of the shell to obtain scum.
The middle outlet of the shell is connected with a fine slag collecting device, the middle layer slurry in the shell enters the fine slag collecting device, and the fine slag collecting device is used for filtering the middle layer slurry in the shell to obtain fine slag; the middle outlet of the shell is also connected with the micro-nano bubble generating device, and the middle layer slurry in the shell enters the micro-nano bubble generating device as a water source to be contacted with gas provided by a gas source to generate bubbles.
The thick sediment collection device of bottom export of casing, the thick sediment collection device of lower floor's thick liquid entering in the casing, thick sediment collection device be used for filtering the thick sediment of casing lower floor and obtain thick sediment.
Outlets of the scum collecting device, the fine slag collecting device and the coarse slag collecting device are all connected into a storage tank, an outlet end of the storage tank is connected to the top of the oxidation flotation device, and filtered filtrate flows into the storage tank and flows back to the oxidation flotation device from the storage tank.
The carbide slag contains a small amount of impurities such as coke particles, ferrosilicon and the like. The coke particles have small density and larger granularity and are easy to float on the water surface; the ferrosilicon particles are generally high in density, and the separation of the ferrosilicon can be realized by the gravity sedimentation of the large ferrosilicon particles. While the smaller particle size coke particles and ferrosilicon particles are not easily separated by simple settling or size sorting. The utility model discloses utilize coke, ferrosilicon foreign particles to subside the different and this characteristic of micro-nano bubble to the different adhesive force of different fine particles of speed with other granules, combine micro-nano bubble to the quick oxidation of reductive impurity, realized the oxidation of impurity in the carbide slag and select separately the coupling, be favorable to improving the forced oxidation speed and the quality of desulfurization gypsum of carbide slag desulfurization in-process.
As an optimal technical scheme, micro-nano bubble generating device's exit end pass through the access of bubble conveying pipeline the casing.
As a preferred technical proposal of the utility model, the air source comprises an air source, an oxygen source or an ozone source.
The utility model discloses a bubble that micro-nano bubble generating device produced be micro-nano bubble, is used for the oxidation flotation of impurity with micro-nano bubble, and its advantage lies in: (1) the micro-nano bubbles have small size and long retention time, and the surfaces of the micro-nano bubbles are negatively charged and can adsorb substances with positive charges in water, so that suspended matters and fine particles can have enough upward floating power, and the micro-nano bubbles have a good effect of removing the suspended matters in the solution; (2) when the micro-nano bubbles are crushed, ultrahigh-speed micro jet flow and local ultrahigh temperature can be formed by instant release of pressure, and the effect is favorable for crushing carbide slag particles with large particle size and exposing coated impurities; (3) a large amount of free radicals with strong oxidizing property can be formed at the moment of the breakage of the micro-nano bubbles, which is beneficial to the oxidation of reducing substances; the micro-nano bubbles have extremely small diameters, and are more favorable for gas-liquid mass transfer than the traditional bubbles, so that more oxidizing gases are dissolved in water more quickly, and the rapid oxidation of reducing substances is facilitated.
As an optimized technical scheme, the inside lateral wall of casing on be provided with the shower nozzle, bubble conveying pipeline's exit end insert the shower nozzle.
As an optimized technical proposal of the utility model, the bottom of the shell is of a conical structure.
As an optimized technical scheme of the utility model, the inside agitating unit that is provided with of casing.
In a preferred embodiment of the present invention, the vertical distance between the nozzle hole of the nozzle head and the bottom surface of the housing is 1/8 to 1/4 of the height of the housing, and may be, for example, 0.125, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24 or 0.25.
As an optimized technical proposal, the scum collecting device comprises a scum groove and a scum filter which are connected in sequence along the material flow direction.
And a stirring device is arranged in the shell of the scum trough.
As an optimized technical proposal of the utility model, the fine slag collecting device comprises a fine slag filter.
As an optimal technical scheme, the coarse slag collecting device comprises a coarse slag groove and a coarse slag filter which are connected in sequence along the material flow direction.
And a stirring device is arranged in the shell of the coarse slag groove.
Adopt the utility model provides an impurity desorption device carries out the desorption to the impurity in the carbide slag, the impurity desorption method include:
(1) introducing gas and liquid into the micro-nano bubble generating device to generate bubbles, introducing carbide slag slurry into the oxidation flotation device, blowing the bubbles into the carbide slag slurry through the micro-nano bubble generating device, carrying out oxidation flotation impurity removal on impurities in the carbide slag slurry (the impurities in the carbide slag slurry comprise coke particles, ferrosilicon particles, and reducing impurities such as sulfide and phosphide), standing after the oxidation flotation impurity removal, and settling and layering the impurities with different particle sizes in the carbide slag slurry to obtain upper layer slag slurry, middle layer slag slurry and lower layer slag slurry;
(2) discharging the upper layer slag slurry from the oxidation flotation device, then feeding the upper layer slag slurry into a scum tank, enabling the upper layer slag slurry to flow into a scum filtering device through the scum tank, filtering to obtain scum and filtrate, discharging the scum, and feeding the filtrate into a storage tank;
(3) discharging the middle-layer slag slurry from the oxidation flotation device, then feeding the middle-layer slag slurry into a fine slag filtering device, filtering to obtain fine slag and filtrate, discharging the fine slag, and feeding the filtrate into a storage tank; meanwhile, part of the slurry in the middle layer enters a micro-nano bubble generating device to be used as a water source;
(4) discharging the lower layer slag slurry from the oxidation flotation device, then feeding the lower layer slag slurry into a coarse slag tank, enabling the lower layer slag slurry to flow into a coarse slag filtering device through the coarse slag tank, filtering to obtain coarse slag and filtrate, discharging the coarse slag, and feeding the filtrate into a storage tank;
(5) and the filtrate collected in the storage tank flows back to the oxidation flotation device to be used for controlling the flotation liquid level.
Compared with the prior art, the beneficial effects of the utility model are that:
the carbide slag contains a small amount of impurities such as coke particles, ferrosilicon and the like. The coke particles have small density and larger granularity and are easy to float on the water surface; the ferrosilicon particles are generally high in density, and the separation of the ferrosilicon can be realized by the gravity sedimentation of the large ferrosilicon particles. While the smaller particle size coke particles and ferrosilicon particles are not easily separated by simple settling or size sorting. The utility model discloses utilize coke, ferrosilicon foreign particles to subside the different and this characteristic of micro-nano bubble to the different adhesive force of different fine particles of speed with other granules, the oxidation of impurity in the carbide slag and the coupling of selecting separately have been realized to the quick oxidation of reductive impurity to the little nano bubble of reunion, are favorable to improving the forced oxidation speed of carbide slag desulfurization in-process and the quality of desulfurization gypsum.
Drawings
Fig. 1 is a schematic structural diagram of a removal system device according to an embodiment of the present invention.
Wherein, 1-a micro-nano bubble generating device; 2-an oxidative flotation device; 3-coarse slag groove; 4-coarse residue filter; 5-fine slag filter; 6-slag floating groove; 7-a scum filter; and 8-a storage tank.
Detailed Description
It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly, and may for example be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; it will be apparent to those skilled in the art that the specific meanings of the above terms in the present invention can be understood by specific terms.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In a specific embodiment, the utility model provides an impurity desorption system device for carbide slag, impurity desorption system device as shown in figure 1, including oxidation flotation device 2, oxidation flotation device 2 includes the casing, and the casing bottom is the toper structure, is provided with agitating unit in the casing. The inlet of the shell is connected with the micro-nano bubble generating device 1, the outlet end of the micro-nano bubble generating device 1 is connected into the shell through a bubble conveying pipeline, the micro-nano bubble generating device 1 is externally connected with an air source, and the air source comprises an air source, an oxygen source or an ozone source. Be provided with the shower nozzle on the inside lateral wall of casing, bubble conveying pipeline's exit end inserts the shower nozzle, and the spout of shower nozzle is 1/8 ~ 1/4 of casing height with the perpendicular distance of casing bottom surface.
The top outlet of the shell is connected with a scum collecting device, upper layer slurry in the shell overflows into the scum collecting device, and the scum collecting device is used for filtering the upper layer slurry of the shell to obtain scum. The scum collecting device comprises a scum trough 6 and a scum filter 7 which are sequentially connected along the material flow direction, and a stirring device is arranged in the shell of the scum trough 6.
The middle part exit linkage fine sediment collection device of casing, the fine sediment collection device of middle level thick liquid entering in the casing, fine sediment collection device is used for filtering the casing middle level thick liquid and obtains fine sediment, and fine sediment collection device includes fine sediment filter 5. The middle outlet of the shell is also connected with the micro-nano bubble generating device 1, and the middle layer slurry in the shell enters the micro-nano bubble generating device 1 as a water source to be contacted with gas provided by a gas source to generate bubbles.
The thick sediment collection device of bottom export of casing, lower floor's thick liquid in the casing gets into thick sediment collection device, thick sediment collection device be used for filtering casing lower floor's thick liquid and obtain thick sediment, thick sediment collection device includes thick sediment groove 3 and the thick sediment filter 4 that connects gradually along the material flow direction, is provided with agitating unit in the casing of thick sediment groove 3.
Outlets of the scum filter 7, the fine slag filter 5 and the coarse slag filter 4 are all connected into a storage tank 8, an outlet end of the storage tank 8 is connected to the top of the oxidation flotation device 2, and filtered filtrate flows into the storage tank 8 and flows back to the oxidation flotation device 2 from the storage tank 8.
In another embodiment, adopt the utility model provides an impurity removal device carries out the desorption to the impurity in the carbide slag, the impurity desorption method include:
(1) introducing gas and liquid into the micro-nano bubble generating device 1 to generate bubbles, introducing carbide slag slurry into the oxidation flotation device 2, blowing the bubbles into the carbide slag slurry through the micro-nano bubble generating device 1, carrying out oxidation flotation impurity removal on impurities in the carbide slag slurry (the impurities in the carbide slag slurry comprise coke particles, ferrosilicon particles, and reductive impurities such as sulfide and phosphide), standing after the oxidation flotation impurity removal, and settling and layering the impurities with different particle sizes in the carbide slag slurry to obtain upper layer slag slurry, middle layer slag slurry and lower layer slag slurry;
(2) the upper layer slag slurry is discharged from the oxidation flotation device 2, enters a floating slag groove 6, flows into a floating slag filtering device through the floating slag groove 6, is filtered to obtain floating slag and filtrate, the floating slag is discharged outside, and the filtrate enters a storage tank 8;
(3) the middle layer slag slurry is discharged from the oxidation flotation device 2 and then enters a fine slag filtering device, fine slag and filtrate are obtained after filtering, the fine slag is discharged, and the filtrate enters a storage tank 8; meanwhile, part of the slurry in the middle layer enters the micro-nano bubble generating device 1 to be used as a water source;
(4) discharging the lower layer slag slurry from the oxidation flotation device 2, then feeding the lower layer slag slurry into a coarse slag tank 3, feeding the lower layer slag slurry into a coarse slag filtering device through the coarse slag tank 3, filtering to obtain coarse slag and filtrate, discharging the coarse slag, and feeding the filtrate into a storage tank 8;
(5) the filtrate collected in the storage tank 8 is returned to the oxidative flotation device 2 for controlling the flotation level.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. An impurity removal system device for carbide slag is characterized by comprising an oxidation flotation device, wherein the oxidation flotation device comprises a shell, an inlet of the shell is connected with a micro-nano bubble generating device, and the micro-nano bubble generating device is externally connected with an air source;
the top outlet of the shell is connected with a scum collecting device, the upper layer of slurry in the shell overflows into the scum collecting device, and the scum collecting device is used for filtering the upper layer of slurry in the shell to obtain scum;
the middle outlet of the shell is connected with a fine slag collecting device, the middle layer slurry in the shell enters the fine slag collecting device, and the fine slag collecting device is used for filtering the middle layer slurry in the shell to obtain fine slag; the middle outlet of the shell is also connected with the micro-nano bubble generating device, and the middle-layer slurry in the shell is used as a water source and enters the micro-nano bubble generating device to be contacted with gas provided by a gas source to generate bubbles;
the bottom of the shell is provided with a coarse slag collecting device, lower-layer slurry in the shell enters the coarse slag collecting device, and the coarse slag collecting device is used for filtering the lower-layer slurry of the shell to obtain coarse slag;
outlets of the scum collecting device, the fine slag collecting device and the coarse slag collecting device are all connected into a storage tank, an outlet end of the storage tank is connected to the top of the oxidation flotation device, and filtered filtrate flows into the storage tank and flows back to the oxidation flotation device from the storage tank.
2. The impurity removal system device of claim 1, wherein an outlet end of the micro-nano bubble generation device is connected to the housing through a bubble delivery pipeline.
3. The system for removing impurities device of claim 1, wherein the gas source comprises an air source, an oxygen source, or an ozone source.
4. The apparatus of claim 2, wherein a nozzle is disposed on the inner side wall of the housing, and the outlet end of the bubble delivery pipe is connected to the nozzle.
5. The contaminant removal system assembly of claim 1, wherein the housing has a conical bottom.
6. The system apparatus for removing impurities of claim 1, wherein the shell is internally provided with a stirring device.
7. The apparatus of claim 4, wherein the nozzle of the nozzle has a vertical distance from the bottom of the housing of 1/8-1/4 of the height of the housing.
8. The apparatus of claim 1, wherein the dross collecting device comprises a dross trough and a dross filter connected in series along the material flow direction;
and a stirring device is arranged in the shell of the scum trough.
9. The system for removing impurities of claim 1 wherein said fine slag collection device comprises a fine slag filter.
10. The impurity removal system device of claim 1, wherein the coarse slag collecting device comprises a coarse slag tank and a coarse slag filter which are connected in sequence along the material flow direction;
and a stirring device is arranged in the shell of the coarse slag groove.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114632459A (en) * | 2022-02-23 | 2022-06-17 | 国能龙源环保有限公司 | Preparation device and preparation method of carbide slag as desulfurization reducing agent |
| TWI790063B (en) * | 2021-12-27 | 2023-01-11 | 樊滿舟 | Quality transmission equipment and method for heterogenous interface |
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2021
- 2021-03-04 CN CN202120471113.5U patent/CN214554468U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI790063B (en) * | 2021-12-27 | 2023-01-11 | 樊滿舟 | Quality transmission equipment and method for heterogenous interface |
| CN114632459A (en) * | 2022-02-23 | 2022-06-17 | 国能龙源环保有限公司 | Preparation device and preparation method of carbide slag as desulfurization reducing agent |
| CN114632459B (en) * | 2022-02-23 | 2023-05-23 | 国能龙源环保有限公司 | Preparation device and preparation method for carbide slag as desulfurization reducing agent |
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