CN110585830A - System for wet dust removal of tail gas of rotary kiln - Google Patents
System for wet dust removal of tail gas of rotary kiln Download PDFInfo
- Publication number
- CN110585830A CN110585830A CN201910958417.1A CN201910958417A CN110585830A CN 110585830 A CN110585830 A CN 110585830A CN 201910958417 A CN201910958417 A CN 201910958417A CN 110585830 A CN110585830 A CN 110585830A
- Authority
- CN
- China
- Prior art keywords
- water
- pipeline
- tank
- supplementing
- tail gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Abstract
The invention relates to the technical field of tail gas treatment of rotary kilns, in particular to a wet dust removal system for tail gas of a rotary kiln. It includes water bath dust removal case, the header tank, centrifuge dehydration processing subassembly, with the wind device, the header tank is linked together through first moisturizing pipeline and water bath dust removal case, the export of first moisturizing pipeline is located the water bath dust removal case, the well upper portion of water bath dust removal case is provided with the overflow mouth, the bottom of water bath dust removal case is provided with the drain, the overflow mouth is linked together through overflow pipeline and header tank, the drain is linked together through first sewage pipes and header tank, the header tank passes through the second sewage pipes, second moisturizing pipeline is connected with centrifuge dehydration processing subassembly with the wind device and is connected through leading the wind pipeline with the wind device.
Description
Technical Field
The invention relates to the technical field of tail gas treatment of rotary kilns, in particular to a wet dust removal system for tail gas of a rotary kiln.
Background
The high-temperature tail gas that the rotary kiln produced usually is handled through wet dedusting system, and wet dedusting system includes water-bath dust remover, and water-bath dust remover includes water-bath dust removal case, is provided with a large amount of water liquid in the water-bath dust removal case, and tail gas lets in water-bath dust removal case and contacts closely with water liquid, separates pollutant (solid particle) from tail gas, purifies tail gas, can also play the cooling effect to high-temperature tail gas simultaneously. After the pollutant melts in the water liquid, subsides to the bottom through gravity in water-bath dust removal case to the form of thick liquids is discharged from water-bath dust removal bottom of the case portion drain, and this kind of processing mode settling time is more of a specified duration, and is inefficient, also makes things convenient for operating personnel to operate, also can cause the loss of part water liquid, produces waste water, and the tail gas after the while purifies directly discharges to the sky, and a large amount of heats do not obtain the utilization, and resource utilization is lower.
Disclosure of Invention
The invention aims to solve the technical problem of providing a wet dust removal system for tail gas of a rotary kiln, which has high efficiency and high resource utilization rate.
The technical scheme adopted by the invention for solving the technical problems is as follows: the system for wet dedusting of tail gas of the rotary kiln comprises a water bath deduster, a water collecting tank, a centrifuge dehydration treatment component and an air utilization device, wherein the water bath deduster comprises a water bath dedusting tank, the water collecting tank is communicated with the water bath dedusting tank through a first water supplementing pipeline, an outlet of the first water supplementing pipeline is positioned in the water bath dedusting tank and at the bottom of the water bath dedusting tank, and a first water supplementing pump and a water supplementing valve are arranged on the first water supplementing pipeline;
the middle upper part of the water bath dust removal tank is provided with an overflow port, the bottom of the water bath dust removal tank is provided with a drain outlet, the overflow port is communicated with the water collection tank through an overflow pipeline, the drain outlet is communicated with the water collection tank through a first drain pipeline, and the first drain pipeline is provided with a drain valve;
the water collecting tank is connected with the centrifuge dehydration treatment component through a second sewage discharge pipeline and a second water supplementing pipeline, a sewage discharge pump is arranged on the second sewage discharge pipeline, and a second water supplementing pump is arranged on the second water supplementing pipeline;
the air utilization device is connected with the air utilization device through an air induction pipeline, and an induced draft fan is arranged on the air induction pipeline.
Further, the air-using device is a hot blast stove.
The centrifugal water-saving device is characterized by further comprising a controller, the water supplementing valve and the blow-down valve are all electromagnetic valves, and the first water supplementing pump, the water supplementing valve, the water bath dust remover, the centrifuge dehydration processing assembly, the blow-down valve, the blow-down pump, the second water supplementing pump and the draught fan are respectively connected with the controller through signal data lines.
Further, the controller is a programmable controller.
Further, the sewage treatment device further comprises a flushing pipeline, one end of the flushing pipeline is communicated with the first water replenishing pipeline, the other end of the flushing pipeline is communicated with the sewage discharge pipeline, and a flushing valve is arranged on the flushing pipeline.
The centrifuge dehydration processing assembly comprises a high-level tank, a centrifuge, a filtrate tank and a filter cake tank, wherein the high-level tank is communicated with the water collecting tank through a second sewage discharge pipeline, the high-level tank is connected with the centrifuge through a feeding pipeline, and the feeding pipeline is provided with a feeding valve;
the filter liquor tank is arranged below a filtrate outlet of the centrifuge, the filter cake tank is arranged below a filter cake outlet of the centrifuge, and the filtrate tank is communicated with the water collecting tank through a second water replenishing pipeline.
Further, the water-saving device also comprises a consumed water supplementing device which is communicated with the water collecting tank through a third water supplementing pipeline.
The invention has the beneficial effects that: by arranging the water collecting tank, the centrifuge dehydration treatment component and the air using device, water liquid in the water collecting tank is conveyed to the bottom of the water bath dust removal tank through the first water replenishing pump, solid particles in tail gas are dissolved into the water liquid after the tail gas of the rotary kiln enters the water bath dust removal tank, the purification of tail gas is realized, when the water liquid in the water collection tank is continuously conveyed to the bottom of the water bath dust removal tank, the solid particles are suspended in the water and are conveyed to the water collecting tank from the overflow port along the overflow pipeline after reaching a certain amount, or the solid particle slurry at the bottom of the water bath dust removal tank is conveyed into the water collecting tank by opening the drain valve, solid particle slurry in the water collecting tank is conveyed to a centrifuge dehydration treatment component through a sewage pump for dehydration and filtration treatment, and filtrate generated by the centrifuge dehydration treatment component through dehydration and filtration treatment is conveyed to the water collecting tank through a second water replenishing pump, so that the water liquid can be recycled; meanwhile, the purified tail gas is conveyed to an air using device through a draught fan for use, and the air using device can be a hot blast stove. Therefore, the wet dust removal system for tail gas of the rotary kiln has the advantages of simple structure, convenience in operation, strong continuous production capacity and convenience in automatic production, and compared with natural sedimentation, the efficiency of dust removal is obviously improved by adopting the centrifugal machine dehydration treatment component for dehydration and filtration, the whole system also reduces the amount of generated waste water, avoids the direct emission of purified tail gas and obviously improves the resource utilization rate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the labels in the figure are: the water bath dust removal tank comprises a water bath dust removal tank 1, a water collection tank 2, a feed valve 3, an air utilization device 4, a first water replenishing pipeline 5, a first water replenishing pump 6, a water replenishing valve 7, an overflow port 8, an overflow pipeline 9, a first sewage discharge pipeline 10, a sewage discharge valve 11, a second sewage discharge pipeline 12, a second water replenishing pipeline 13, a sewage discharge pump 14, a second water replenishing pump 15, an air induction pipeline 16, an induced draft fan 17, a flushing pipeline 18, a flushing valve 19, a high-level tank 20, a centrifugal machine 21, a filtrate tank 22, a filter cake tank 23 and a feed pipeline 24.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, the system for wet dedusting of tail gas of a rotary kiln comprises a water bath deduster, the water bath deduster comprises a water bath dedusting box 1, a water collecting tank 2, a centrifuge dehydration treatment component and an air using device 4, wherein the water collecting tank 2 is communicated with the water bath dedusting box 1 through a first water supplementing pipeline 5, an outlet of the first water supplementing pipeline 5 is positioned in the water bath dedusting box 1 and at the bottom of the water bath dedusting box 1, and a first water supplementing pump 6 and a water supplementing valve 7 are arranged on the first water supplementing pipeline 5;
an overflow port 8 is arranged at the middle upper part of the water bath dust removal tank 1, a sewage discharge port is arranged at the bottom of the water bath dust removal tank 1, the overflow port 8 is communicated with the water collection tank 2 through an overflow pipeline 9, the sewage discharge port is communicated with the water collection tank 2 through a first sewage discharge pipeline 10, and the first sewage discharge pipeline 10 is provided with a sewage discharge valve 11;
the water collecting tank 2 is connected with a centrifuge dehydration treatment component through a second sewage discharge pipeline 12 and a second water supplementing pipeline 13, a sewage pump 14 is arranged on the second sewage discharge pipeline 12, and a second water supplementing pump 15 is arranged on the second water supplementing pipeline 13;
the wind utilization device 4 is connected with the wind utilization device 4 through a wind induction pipeline 16, and a draught fan 17 is arranged on the wind induction pipeline 16.
When the wet dedusting system for the tail gas of the rotary kiln works, water liquid in the water collecting tank 2 is conveyed to the bottom of the water bath dedusting tank 1 through the first water replenishing pump 6 along the first water replenishing pipeline 5, after the tail gas of the rotary kiln enters the water bath dedusting tank 1, solid particles in the tail gas are melted into the water liquid to realize the purification of the tail gas, and the purified tail gas is conveyed to the air utilization device 4 for use through the induced draft fan 17 along the induced duct 16; when water liquid in the water collection tank 2 is continuously conveyed to the bottom of the water bath dust removal tank 1, solid particles are suspended in the water liquid to form slurry, the slurry is conveyed into the water collection tank 2 from an overflow port 8 along an overflow pipeline 9 after reaching a certain amount, after a certain time, the slurry of the solid particles at the bottom of the water bath dust removal tank 1 is conveyed into the water collection tank 2 along a first sewage discharge pipeline 10 by opening a sewage discharge valve 11, the slurry of the solid particles in the water collection tank 2 is conveyed into a centrifuge dehydration processing component along a second sewage discharge pipeline 12 through a sewage discharge pump 14 for dehydration and filtration processing, filtrate generated by the centrifuge dehydration processing component in dehydration and filtration processing is conveyed into the water collection tank 2 along a second water replenishing pipeline 13 through a second water replenishing pump 15, and the water liquid is recycled;
specifically, the air-using device 4 is preferably a hot-blast stove because the purified exhaust gas has a constant temperature.
In order to improve the automation level of the whole system and facilitate operation and use, the invention is also provided with a controller, the water supplementing valve 7 and the blow-down valve 11 are both electromagnetic valves, and the first water supplementing pump 6, the water supplementing valve 7, the water bath dust remover, the centrifuge dehydration processing assembly, the blow-down valve 11, the blow-down pump 14, the second water supplementing pump 15 and the induced draft fan 17 are respectively connected with the controller through signal data lines. The opening and closing of the first water replenishing pump 6, the water replenishing valve 7, the water bath dust collector, the centrifuge dehydration treatment component, the blow-down valve 11, the blow-down pump 14, the second water replenishing pump 15 and the induced draft fan 17 are all automatically controlled by a controller according to setting, and the controller is preferably a programmable controller.
When the water bath dust removal tank is used in time, the concentration of solid particles at the bottom of the water bath dust removal tank 1 is high, the first sewage discharge pipeline 10 can be blocked, the water bath dust removal tank is further provided with a flushing pipeline 18, one end of the flushing pipeline 18 is communicated with the first water replenishing pipeline 5, the other end of the flushing pipeline 18 is communicated with the overflow pipeline 9, a flushing valve 19 is arranged on the flushing pipeline 18, the first sewage discharge pipeline 10 is flushed through the flushing pipeline 18, and the probability of blockage of the first sewage discharge pipeline 10 is reduced.
The centrifuge dehydration processing component is used for dehydrating and filtering solid particle slurry, and the preferable structure of the centrifuge dehydration processing component is as follows: the centrifuge dehydration processing assembly comprises a high-level tank 20, a centrifuge 21, a filtrate tank 22 and a filter cake tank 23, wherein the high-level tank 20 is communicated with the water collecting tank 2 through a second sewage discharge pipeline 12, the high-level tank 20 is connected with the centrifuge 21 through a feeding pipeline 24, and the feeding pipeline 24 is provided with a feeding valve 3; the filtrate tank 22 is arranged below a filtrate outlet of the centrifuge 21, the filter cake tank 23 is arranged below a filter cake outlet of the centrifuge 21, and the filtrate tank 22 is communicated with the water collecting tank 2 through the second water replenishing pipeline 13. During operation, solid particle slurry in the water collection tank 2 is conveyed into the high-level tank 20 through the sewage pump 14 along the second sewage discharge pipeline 12, the feed valve 3 is opened, the solid particle slurry in the high-level tank 20 enters the centrifuge 21 along the feed pipeline 24, solid-liquid separation of the solid particle slurry is realized under the action of the centrifuge 21, the generated filtrate falls into the filtrate tank 22 from the filtrate outlet of the centrifuge 21 for storage, and the generated filter cake falls into the filter cake tank 23 from the filter cake outlet of the centrifuge 21 for storage; meanwhile, the filtrate in the filtrate tank 22 is re-conveyed to the water collecting tank 2 along the second water replenishing pipeline 13 through the second water replenishing pump 15.
In order to realize the supplement of the consumed water liquid, the invention is also provided with a consumed water supplement device which is communicated with the water collecting tank 2 through a third water supplement pipeline.
Claims (7)
1. A system for rotary kiln tail gas wet dedusting, including water bath dust remover, water bath dust remover includes water bath dust removal case (1), its characterized in that: the centrifugal machine dust removing device is characterized by further comprising a water collecting tank (2), a centrifugal machine dehydration treatment assembly and an air using device (4), wherein the water collecting tank (2) is communicated with the water bath dust removing tank (1) through a first water supplementing pipeline (5), an outlet of the first water supplementing pipeline (5) is positioned in the water bath dust removing tank (1) and is positioned at the bottom of the water bath dust removing tank (1), and a first water supplementing pump (6) and a water supplementing valve (7) are arranged on the first water supplementing pipeline (5);
an overflow port (8) is arranged at the middle upper part of the water bath dust removal tank (1), a sewage draining exit is arranged at the bottom of the water bath dust removal tank (1), the overflow port (8) is communicated with the water collecting tank (2) through an overflow pipeline (9), the sewage draining exit is communicated with the water collecting tank (2) through a first sewage draining pipeline (10), and the first sewage draining pipeline (10) is provided with a sewage draining valve (11);
the water collecting tank (2) is connected with a centrifuge dehydration treatment component through a second sewage discharge pipeline (12) and a second water supplementing pipeline (13), a sewage discharge pump (14) is arranged on the second sewage discharge pipeline (12), and a second water supplementing pump (15) is arranged on the second water supplementing pipeline (13);
the air utilization device (4) is connected with the air utilization device (4) through an air induction pipeline (16), and an induced draft fan (17) is arranged on the air induction pipeline (16).
2. The system for wet dedusting of tail gas of a rotary kiln as set forth in claim 1, characterized in that: the air utilization device (4) is a hot blast stove.
3. The system for wet dedusting of tail gas of a rotary kiln as set forth in claim 1, characterized in that: the centrifugal water-supplementing device is characterized by further comprising a controller, the water-supplementing valve (7) and the blow-down valve (11) are all electromagnetic valves, and the first water-supplementing pump (6), the water-supplementing valve (7), the water bath dust collector, the centrifugal machine dehydration processing assembly, the blow-down valve (11), the blow-down pump (14), the second water-supplementing pump (15) and the draught fan (17) are connected with the controller through signal data lines respectively.
4. The system for wet dedusting of tail gas of a rotary kiln as set forth in claim 3, characterized in that: the controller is a programmable controller.
5. The system for wet dedusting of tail gas of a rotary kiln as set forth in claim 1, characterized in that: the device also comprises a flushing pipeline (18), one end of the flushing pipeline (18) is communicated with the first water replenishing pipeline (5), the other end of the flushing pipeline (18) is communicated with the overflow pipeline (9), and a flushing valve (19) is arranged on the flushing pipeline (18).
6. The system for wet dedusting of tail gas of a rotary kiln as set forth in any one of claims 1 to 5, characterized in that: the centrifuge dehydration processing assembly comprises a high-level tank (20), a centrifuge (21), a filtrate tank (22) and a filter cake tank (23), wherein the high-level tank (20) is communicated with the water collecting tank (2) through a second sewage discharge pipeline (12), the high-level tank (20) is connected with the centrifuge (21) through a feeding pipeline (24), and the feeding pipeline (24) is provided with a feeding valve (3);
the filtrate tank (22) is arranged below a filtrate outlet of the centrifuge (21), the filter cake tank (23) is arranged below a filter cake outlet of the centrifuge (21), and the filtrate tank (22) is communicated with the water collecting tank (2) through a second water replenishing pipeline (13).
7. The system for wet dedusting of tail gas of a rotary kiln as set forth in claim 1, characterized in that: the water-saving device also comprises a consumed water supplementing device which is communicated with the water collecting tank (2) through a third water supplementing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958417.1A CN110585830A (en) | 2019-10-10 | 2019-10-10 | System for wet dust removal of tail gas of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958417.1A CN110585830A (en) | 2019-10-10 | 2019-10-10 | System for wet dust removal of tail gas of rotary kiln |
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| Publication Number | Publication Date |
|---|---|
| CN110585830A true CN110585830A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910958417.1A Pending CN110585830A (en) | 2019-10-10 | 2019-10-10 | System for wet dust removal of tail gas of rotary kiln |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333111A (en) * | 2020-04-23 | 2020-06-26 | 攀钢集团钒钛资源股份有限公司 | Vanadium trioxide preparation device |
| CN114247239A (en) * | 2020-09-10 | 2022-03-29 | 汤钰婷 | Oil mist filtering equipment |
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| CN106823641A (en) * | 2015-12-07 | 2017-06-13 | 宜昌金正米业有限公司 | A kind of high protein fuel boiler tail gas dust cleaning apparatus |
| CN106955524A (en) * | 2017-04-29 | 2017-07-18 | 贵州大学 | A kind of reverse cleaning device of sewage treatment pipeline Inner filter net |
| CN109653334A (en) * | 2018-12-07 | 2019-04-19 | 福建恒劲科博测控技术有限公司 | A kind of anti-clogging engineering sewage discharge pipeline configuration |
| US10280104B2 (en) * | 2015-04-15 | 2019-05-07 | Andritz Ag | Method for removing mercury from washer suspensions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02237618A (en) * | 1989-02-01 | 1990-09-20 | Lab Sa | Flue gas cleaning method |
| CN203807419U (en) * | 2014-03-31 | 2014-09-03 | 攀钢集团攀枝花钢钒有限公司 | Gas purification device |
| CN203904108U (en) * | 2014-05-28 | 2014-10-29 | 应城市新都化工有限责任公司 | System for purifying sewage generated during desulfuration of ammonia synthesis |
| CN204380455U (en) * | 2014-12-31 | 2015-06-10 | 辛集市海洋皮革有限公司 | A kind of buffing dust treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111333111A (en) * | 2020-04-23 | 2020-06-26 | 攀钢集团钒钛资源股份有限公司 | Vanadium trioxide preparation device |
| CN114247239A (en) * | 2020-09-10 | 2022-03-29 | 汤钰婷 | Oil mist filtering equipment |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
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| RJ01 | Rejection of invention patent application after publication |