CN112044345A - Novel SDA desulfurizing tower bed charge cyclic utilization system - Google Patents
Novel SDA desulfurizing tower bed charge cyclic utilization system Download PDFInfo
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- CN112044345A CN112044345A CN202011000744.5A CN202011000744A CN112044345A CN 112044345 A CN112044345 A CN 112044345A CN 202011000744 A CN202011000744 A CN 202011000744A CN 112044345 A CN112044345 A CN 112044345A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
- B01F33/831—Devices with consecutive working receptacles, e.g. with two intermeshing tools in one of the receptacles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
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Abstract
The application discloses a novel SDA (SDA) desulfurization tower bottom material recycling system, which comprises a stirring tank, and a material ash conveying device, a stirring liquid supplementing device, a stirrer and a particle grinding device which are arranged on the stirring tank; the material ash conveying device is used for conveying the accumulated ash of the tower bottom material to the stirring tank; the stirring liquid supplementing device is used for conveying stirring liquid into the stirring tank, and mixing and stirring the tower bottom material deposition and the stirring liquid in the stirring tank through the stirrer; the particle grinding device is used for grinding the insoluble particles in the mixed solution after stirring. The beneficial part of this application lies in providing a novel SDA desulfurizing tower bed charge cyclic utilization system who has improved the utilization ratio of calcium hydroxide and has reduced the discharging of desulfurizing tower bed charge.
Description
Technical Field
The application relates to a cyclic utilization system, concretely relates to novel SDA desulfurizing tower bed charge cyclic utilization system.
Background
The bottom ash discharge mode of the SDA desulfurization tower is that bottom palate type ash discharge valves are directly discharged to a dump truck in an open mode, taking a 3# sintering machine desulfurization system in the south area of a main horse steel iron-making plant as an example, 8830.04 tons of bottom ash are discharged in 2019 years, and the discharge amount is converted into 1.04 tons of hour discharge amount. The tower bottom ash test data is as follows: 15-17% of calcium sulfate, 45-54% of calcium sulfite and 20-30% of calcium hydroxide:
the problems exist at present: a large amount of tower bottom ash can not be recycled as a circulating material in a desulfurization system after being transported outside for a long time; a large amount of dust is generated during the operation of discharging the tower bottom ash, so that the performance of the site environment is influenced; the desulfurization system often influences the stable production of the system due to untimely discharge of the tower bottom ash, and the phenomenon that the tower bottom ash is directly discharged to the ground occurs in order to ensure the stable production of the desulfurization system; after the PO-SDA of the desulfurization system is transformed, the generation amount of tower bottom ash is increased, and the three problems are more prominent; after the SCR denitration system of the sintering machine operates, the cooling water production of equipment of the denitration system is about 2t/h, and no comprehensive utilization way is provided.
Disclosure of Invention
A novel SDA (SDA) desulfurization tower bottom material recycling system comprises a stirring tank, and a material ash conveying device, a stirring liquid supplementing device, a stirrer and a particle grinding device which are arranged on the stirring tank;
the material ash conveying device is used for conveying the accumulated ash of the tower bottom material to the stirring tank;
the stirring liquid supplementing device is used for conveying stirring liquid into the stirring tank, and mixing and stirring the tower bottom material deposition and the stirring liquid in the stirring tank through the stirrer;
the particle grinding device is used for grinding the insoluble particles in the mixed solution after stirring.
Further, the material ash conveying device comprises a conveyor and the bottom of the desulfurizing tower, the input end of the conveyor is communicated with the bottom of the desulfurizing tower, a gate valve is arranged on the bottom of the desulfurizing tower, and the output end of the conveyor is communicated with the stirring tank through an ash discharge valve.
Further, the stirring liquid supplementing device comprises a lifting check valve, an electric adjusting butterfly valve, a first flange type tee joint and a first electromagnetic flowmeter, wherein the lifting check valve is communicated with a first connector of the first flange type tee joint, one end of the first electromagnetic flowmeter is communicated with a second connector of the first flange type tee joint, the other end of the first electromagnetic flowmeter is communicated with the stirring tank through a pipeline, and the electric adjusting butterfly valve is communicated with a third connector of the first flange type tee joint.
Further, the particle grinding device comprises a manual ball valve and a grinding pump, wherein one end of the manual ball valve is communicated with the stirring tank, and the other end of the manual ball valve is communicated with the grinding pump through a pipeline.
Furthermore, the other end of the manual ball valve is communicated with a telescopic expansion joint through a pipeline, and one end, far away from the manual ball valve, of the telescopic expansion joint is communicated with the grinding pump.
Further, the grinding pump is communicated with a circulating slurry tank through a pipeline, the circulating slurry tank is communicated with an atomizing nozzle at the top of the desulfurizing tower through a pipeline, and a butterfly valve and a second electromagnetic flowmeter are arranged on a connecting pipeline of the grinding pump and the circulating slurry tank.
Furthermore, a backwashing device for cleaning the pipeline is arranged between the grinding pump and the stirring tank.
Furthermore, the backwashing device comprises a second flange type tee joint, a first interface of the second flange type tee joint is communicated with the manual ball valve through a first backwashing butterfly valve, the first interface of the second flange type tee joint is communicated with the telescopic expansion joint through a second backwashing butterfly valve, and a third interface of the second flange type tee joint is communicated with a backwashing water source pipeline through a third backwashing butterfly valve.
Further, a tuning fork densimeter is arranged on the side of the circulating slurry tank.
Further, the blender jar has a top manhole cover and a side manhole cover.
Further, the top of the stirring tank is provided with a non-contact radar liquid level meter extending into the stirring tank.
The application has the advantages that: the utility model provides a novel SDA desulfurizing tower bed charge cyclic utilization system who has improved the utilization ratio of calcium hydroxide and has reduced the discharging of desulfurizing tower bed charge.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
fig. 1 is a schematic structural diagram of a novel SDA desulfurization tower bottoms recycling system according to an embodiment of the present application;
FIG. 2 is a schematic view of the novel SDA tower bottoms recycling system shown in FIG. 1 from another perspective;
fig. 3 is a process flow diagram of a novel SDA desulfurization tower bottoms recycling system according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, fig. 2 and fig. 3, the novel SDA desulfurization tower bottoms recycling system includes an agitator tank 100, and a material ash conveying device 200, an agitation liquid replenishing device 300, an agitator 400 and a particle grinding device 500 which are arranged on the agitator tank 100; the material ash conveying device 200 is used for conveying the accumulated ash of the tower bottom material to the stirring tank 100; the stirring liquid supplementing device 300 is used for conveying the stirring liquid into the stirring tank 100, and mixing and stirring the bottom material deposition and the stirring liquid in the stirring tank 100 by the stirrer 400; the particle grinding device 500 is used for grinding the insoluble particles in the mixed solution after stirring.
The material ash conveying device 200 comprises a U-shaped bolt conveyor 201 and a desulfurizing tower bottom 202, the input end of the U-shaped bolt conveyor 201 is communicated with the desulfurizing tower bottom 202, a gate valve 203 is arranged on the desulfurizing tower bottom 202, and the output end of the U-shaped bolt conveyor 201 is communicated with the stirring tank 100 through a star-shaped ash discharge valve 204.
The stirring liquid supplementing device 300 comprises a lifting check valve 301, an electric adjusting butterfly valve 302, a first flange type tee 303 and a first electromagnetic flowmeter 304, wherein the lifting check valve 301 is communicated with a first connector of the first flange type tee 303, one end of the first electromagnetic flowmeter 304 is communicated with a second connector of the first flange type tee 303, the other end of the first electromagnetic flowmeter 304 is communicated with the stirring tank 100 through a pipeline, and the first electromagnetic flowmeter 304 is communicated with a third connector of the first flange type tee 303.
The particle grinding device 500 comprises a manual ball valve 501 and a grinding pump 502, one end of the manual ball valve 501 is communicated with the stirring tank 100, the other end of the manual ball valve 501 is communicated with a telescopic expansion joint 503 through a pipeline, and one end, far away from the manual ball valve 501, of the telescopic expansion joint 503 is communicated with the grinding pump 502.
The grinding pump 502 is communicated with a circulating slurry tank (not shown in the figure) through a pipeline, the circulating slurry tank is communicated with an atomizing nozzle (not shown in the figure) at the top of the desulfurizing tower through a pipeline, and a butterfly valve 600 and a second electromagnetic flowmeter 700 are arranged on a connecting pipeline between the grinding pump 502 and the circulating slurry tank.
Still be provided with the backwash device 800 who is used for wasing the pipeline between grinding pump 502 and agitator tank 100, backwash device 800 includes second flange formula tee bend 801, and the first interface of second flange formula tee bend 801 is linked together through first backwash butterfly valve 802 and manual ball valve 501, and the first interface of second flange formula tee bend 801 is linked together through second backwash butterfly valve 803 and flexible expansion joint 503, and the third interface of second flange formula tee bend 801 communicates the backwash water source pipeline through third backwash butterfly valve 804.
The stirring liquid source is pit water and pin removal cooling water which are mutually supplemented, and the pit water sequentially passes through a lifting check valve 301, an electric adjusting butterfly valve 302, a first flange type tee joint 303 and a first electromagnetic flowmeter 304 and enters the stirring tank 100; the denitration cooling water sequentially passes through the lifting check valve 301, the electric adjusting butterfly valve 302, the first flange type tee joint 303 and the first electromagnetic flowmeter 304 to enter the stirring tank 100, stirring liquid and tower bottom material deposition are mixed and then fully fused through the stirrer 400, the stirred slurry contains insoluble coarse particles, the slurry enters the grinding pump 502 through the manual ball valve 501 and the telescopic expansion joint 503 to be finely ground, the ground slurry enters the circulating slurry tank through the second electromagnetic flowmeter 700, the slurry is conveyed to the atomizing nozzle at the top of the desulfurization tower through the circulating slurry tank to be subjected to desulfurization reaction with sulfur-containing gas, the pipeline pressure is reduced, the first backwashing butterfly valve 802 is sequentially closed, the second backwashing butterfly valve 803 is opened, the butterfly valve 600 and the grinding pump 502 are opened, and the butterfly valve is washed.
When the pipeline backwash adopts a key formula to start, manual ball valve 501 is in the state of opening before the backwash, all the other electric valves all are in the closed condition, the backwash start during operation, third backwash butterfly valve 804 is opened, pipeline pressure risees this moment, open first backwash butterfly valve 802, wash first backwash butterfly valve 802 to agitator tank 100 pipeline, open second backwash butterfly valve 803, wash second backwash butterfly valve 803 to original circulation thick liquid jar pipeline, open second backwash butterfly valve 803 after finishing washing, close third backwash butterfly valve 804, the system keeps normal operating condition.
The liquid level signal of the circulating slurry tank, the tuning fork density count value signal of the circulating slurry tank, the denitration cooling water liquid level signal, the pit water level signal and the liquid level signal of the stirring tank 100 are intensively linked and controlled, when the liquid level of the circulating slurry tank is lowered to a lower limit, the grinding pump 502 starts to work to supplement slurry for the circulating slurry tank, when the liquid level of the stirring tank 100 is raised to an upper limit, the grinding pump 502 runs at a low speed to ensure that pipeline slurry is not condensed, the water source of the stirring tank 100 depends on the pit water supplement and the denitration cooling water supplement, when the liquid level of the stirring tank 100 is lowered, the denitration cooling water supplement is preferentially utilized, when the liquid level of the denitration cooling water is lowered to the lower limit, the pit water is used as a standby water source to be supplemented into the stirring tank 100, the side part of the circulating slurry tank body is provided with a tuning fork densimeter (not shown in the figure), and the motor rotating speed of the star-shaped ash discharge valve 204 and the opening degree of a butterfly valve of a water inlet ensure that the density of the slurry is stabilized at 1.1 g/ml.
The blender jar 100 has a top manhole cover 900 and a side manhole cover 1000.
A non-contact radar level gauge 1100 is provided at the top of the agitation tank 100 extending inside thereof. As an expansion scheme, a millimeter wave radar is arranged at the top of the stirring tank 100, and not only can the liquid level be detected, but also the stirring condition in the millimeter wave image reaction tank can be detected.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. A novel SDA (SDA) desulfurization tower bottom material recycling system is characterized by comprising a stirring tank, a material ash conveying device, a stirring liquid supplementing device, a stirrer and a particle grinding device, wherein the material ash conveying device, the stirring liquid supplementing device, the stirrer and the particle grinding device are arranged on the stirring tank;
the material ash conveying device is used for conveying the accumulated ash of the tower bottom material to the stirring tank;
the stirring liquid supplementing device is used for conveying stirring liquid into the stirring tank, and mixing and stirring the tower bottom material deposition and the stirring liquid in the stirring tank through the stirrer;
the particle grinding device is used for grinding the insoluble particles in the mixed solution after stirring.
2. The novel SDA desulfurization tower bottom material recycling system of claim 1, characterized in that: the material ash conveying device comprises a conveyor and a desulfurizing tower bottom, wherein the input end of the conveyor is communicated with the bottom of the desulfurizing tower, a gate valve is arranged on the bottom of the desulfurizing tower, and the output end of the conveyor is communicated with the stirring tank through an ash discharge valve.
3. The novel SDA desulfurization tower bottom material recycling system of claim 1, characterized in that: the stirring liquid supplementing device comprises a lifting check valve, an electric adjusting butterfly valve, a first flange type tee joint and a first electromagnetic flowmeter, wherein the lifting check valve is communicated with a first interface of the first flange type tee joint, one end of the first electromagnetic flowmeter is communicated with a second interface of the first flange type tee joint, the other end of the first electromagnetic flowmeter is communicated with the stirring tank through a pipeline, and the electric adjusting butterfly valve is communicated with a third interface of the first flange type tee joint.
4. The novel SDA desulfurization tower bottom material recycling system of claim 1, characterized in that: the particle grinding device comprises a manual ball valve and a grinding pump, wherein one end of the manual ball valve is communicated with the stirring tank, and the other end of the manual ball valve is communicated with the grinding pump through a pipeline.
5. The novel SDA desulfurization tower bottom material recycling system of claim 4, characterized in that: the other end of the manual ball valve is communicated with a telescopic expansion joint through a pipeline, and one end, far away from the manual ball valve, of the telescopic expansion joint is communicated with the grinding pump.
6. The novel SDA desulfurization tower bottom material recycling system of claim 5, characterized in that: the grinding pump is communicated with the circulating slurry tank through a pipeline, the circulating slurry tank is communicated with the atomizing nozzle at the top of the desulfurizing tower through a pipeline, and a butterfly valve and a second electromagnetic flowmeter are arranged on a connecting pipeline of the grinding pump and the circulating slurry tank.
7. The novel SDA desulfurization tower bottom material recycling system according to claim 5 or 6, characterized in that: and a backwashing device for cleaning the pipeline is also arranged between the grinding pump and the stirring tank.
8. The system for recycling the tower bottom material of the SDA desulfurization tower as recited in claim 7, wherein: the backwashing device comprises a second flange type tee joint, a first interface of the second flange type tee joint is communicated with the manual ball valve through a first backwashing butterfly valve, the first interface of the second flange type tee joint is communicated with the telescopic expansion joint through a second backwashing butterfly valve, and a third interface of the second flange type tee joint is communicated with a backwashing water source pipeline through a third backwashing butterfly valve.
9. The novel SDA desulfurization tower bottom material recycling system of claim 5, characterized in that: and a tuning fork densimeter is arranged on the side part of the circulating slurry tank.
10. The novel SDA desulfurization tower bottom material recycling system of claim 1, characterized in that: the agitator tank has a top manhole cover and a side manhole cover.
11. The novel SDA desulfurization tower bottom material recycling system of claim 1, characterized in that: and a non-contact radar liquid level meter extending into the stirring tank is arranged at the top of the stirring tank.
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| CN202011000744.5A CN112044345A (en) | 2020-09-22 | 2020-09-22 | Novel SDA desulfurizing tower bed charge cyclic utilization system |
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| CN202011000744.5A CN112044345A (en) | 2020-09-22 | 2020-09-22 | Novel SDA desulfurizing tower bed charge cyclic utilization system |
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Cited By (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588094A (en) * | 2020-12-23 | 2021-04-02 | 安徽欣创节能环保科技股份有限公司 | Byproduct recycling system applied to SDA (serial data architecture) desulfurization process |
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