CN106563347B - Gypsum rotational flow supernatant buffer tank for wet desulfurization system and application - Google Patents
Gypsum rotational flow supernatant buffer tank for wet desulfurization system and application Download PDFInfo
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- CN106563347B CN106563347B CN201610986200.8A CN201610986200A CN106563347B CN 106563347 B CN106563347 B CN 106563347B CN 201610986200 A CN201610986200 A CN 201610986200A CN 106563347 B CN106563347 B CN 106563347B
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- buffer tank
- cyclone
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- buffer
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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
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- 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 a supernatant buffer tank for gypsum cyclone for a wet desulfurization system, which comprises a gypsum cyclone liquid inlet, a buffer tank body, a waste water cyclone feed pump suction port, a buffer tank overflow port, a buffer tank bottom flow port, an overflow pipe, a control valve, a liquid level measuring device interface, an overflow pipeline return desulfurization system interface and a connecting pipeline. The buffer tank body of the supernatant buffer tank for the gypsum rotational flow adopts a tubular vertical structure, is simple to manufacture, small in anti-corrosion area, material-saving, compact in structure, small in occupied space, convenient to operate and maintain and low in device cost, and can be widely applied to a flue gas desulfurization system.
Description
Technical Field
The invention belongs to the technical field of environmental protection, relates to a wastewater treatment system in a flue gas wet desulfurization technology, and particularly relates to a gypsum cyclone supernatant buffer tank for a wet desulfurization system and application thereof.
Background
Flue gas desulfurization is an environmental protection measure which must be implemented in the industries of coal-fired power plants, petrochemical industry, steel industry and the like at present, and wet desulfurization has become a mainstream technology due to wide applicability. In the whole desulfurization process, since chloride ions are continuously accumulated and corrosion is generated to the pipes and equipment of the whole system, it is necessary to discharge wastewater periodically.
A gypsum cyclone in a gypsum primary dehydration system in wet desulphurization technology generates wastewater. And discharging overflow slurry of the gypsum cyclone to a supernatant buffer tank, then boosting the pressure by a feeding pump of the wastewater cyclone, and then entering the wastewater cyclone, wherein overflow of the wastewater cyclone enters a wastewater treatment process. The wastewater treatment system generally comprises a gypsum cyclone supernatant buffer tank, a wastewater cyclone feed pump, a wastewater cyclone, a wastewater tank and the like.
Some gypsum cyclone overflow collection devices used in desulfurization engineering are pit. The disadvantage of the pit is that the pit occupies limited ground space below ground, and because the pit must be located below ground, the potential energy of the slurry itself at high level cannot be utilized, and an expensive high-lift pit pump is required to pump the liquid back to the wastewater cyclone at high level. In addition, the pit is required to be provided with a stirring device for preventing slurry deposition.
In the past, the buffer memory case is cylindrical or conical structure, and stirring device is also required to be arranged if necessary, and the box is great, and anticorrosive area is big, causes the material extravagant, and occupation space is big moreover. The box body is generally manufactured by welding on site, then is preserved, and has complex procedures. Especially, the cylindrical structure also needs to manufacture a larger civil foundation, which brings inconvenience to construction. Both forms of the case are not easy to maintain.
By searching, no patent publication related to the present patent application has been found.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a gypsum cyclone supernatant buffer tank for a wet desulfurization system and application thereof, wherein the buffer tank has a compact structure and a small size; the structure is simple, and the pipeline is convenient to assemble and disassemble; the slurry is always in a flowing state, and a stirring device is not needed; the investment cost is low, the operation and maintenance are convenient, and the method can be applied to a wastewater treatment system in the wet desulfurization technology.
The invention aims at realizing the following technical scheme:
the utility model provides a wet flue gas desulfurization system is with supernatant liquid buffer tank of gypsum whirl, the buffer tank includes gypsum swirler liquid interface, buffer tank body, waste water swirler feed pump suction inlet, buffer tank overflow mouth, buffer tank underflow mouth, overflow pipe, control valve, liquid level measuring device interface, overflow pipeline returns desulfurization system interface and connecting tube, the buffer tank body is cavity, bottom confined tubular vertical structure and along vertical direction setting, and the top of this buffer tank body or top lateral wall upper portion are connected with buffer tank body inside and are set up gypsum swirler liquid interface, and this gypsum swirler liquid interface can connect the discharge tube of gypsum swirler overflow thick liquid in the desulfurization technique gypsum one-level dehydration system; the upper outer side wall of the buffer storage box body is communicated with the inside of the buffer storage box body, the overflow pipe is arranged outside the buffer storage box body, the overflow port of the buffer storage box is connected with the upper part of the overflow pipe through a connecting pipeline, one side of the bottom of the overflow pipe is connected with an overflow pipeline return desulfurization system interface, and the overflow pipe is connected with a desulfurization system through the overflow pipeline return desulfurization system interface;
the waste water cyclone feeding pump is arranged outside the cache box body and can be connected with the bottom of the cache box body through the waste water cyclone feeding pump suction port, and slurry in the cache box can be discharged to a waste water treatment system through the waste water cyclone feeding pump suction port;
the other side of the bottom of the buffer tank body is communicated with the buffer tank body, a buffer tank bottom flow port is also connected with the other side of the bottom of the overflow pipe through a connecting pipeline, a control valve is arranged on the connecting pipeline between the buffer tank bottom flow port and the overflow pipe, the control valve is not completely closed when the buffer tank operates, and the sum of the underflow flow of the buffer tank bottom flow port and the flow of a feeding pump of the wastewater cyclone is smaller than the incoming liquid flow of the gypsum cyclone, so that slurry in the buffer tank body is in a flowing state;
the waste water swirler feed pump suction port top's the inside liquid level measurement device interface that is provided with of buffer memory case body on the lateral wall of buffer memory case body, the setting can be through this liquid level measurement device interface and the internal phase setting of buffer memory case in buffer memory case body to can test the thick liquid level in the buffer memory case body.
Moreover, the buffer memory case still includes buffer memory case strutting arrangement and overflow pipe strutting arrangement, buffer memory case strutting arrangement sets up in the bottom of buffer memory case body, and this buffer memory case strutting arrangement can support buffer memory case body on the basis, overflow pipe strutting arrangement sets up in the bottom of overflow pipe, and this overflow pipe strutting arrangement can support the overflow pipe on the basis.
The caliber of the bottom flow port of the cache box is smaller than the diameter of the cache box body; and the bottom of the buffer storage box body is plugged by a blind plate.
The application of the gypsum cyclone supernatant buffer tank for the wet desulfurization system in the wastewater treatment system in the wet desulfurization technology is disclosed.
The invention has the advantages and positive effects that:
1. the buffer tank comprises a gypsum cyclone liquid inlet, a buffer tank body, a waste water cyclone feed pump suction port, a buffer tank overflow port, a buffer tank bottom flow port, an overflow pipe, a control valve, a liquid level measuring device interface, an overflow pipeline return desulfurization system interface and a connecting pipeline; the buffer box body of the buffer box is changed into a hollow and bottom-sealed tubular structure, and has the advantages of simple structure, convenient manufacture, on-site pipe fitting assembly, convenient installation, small anti-corrosion area, material saving, compact structure, small occupied space, low device investment, convenient adjustment, and convenient operation and maintenance; when the liquid level in the buffer tank body reaches a certain height, if waste water needs to be treated, a waste water cyclone feeding pump can be started, and the slurry in the buffer tank body is discharged to a waste water treatment system through a suction port of the waste water cyclone feeding pump; if the waste water does not need to be treated, the slurry in the buffer tank body is recycled to the desulfurization system through the overflow port and the underflow; a control valve is arranged on a connecting pipeline between the bottom flow port of the buffer tank and the overflow pipe, the control valve is not completely closed when the buffer tank operates, and the sum of the bottom flow rate of the bottom flow port of the buffer tank and the flow rate of the feeding pump of the wastewater cyclone is smaller than the incoming liquid flow rate of the gypsum cyclone, so that the slurry in the buffer tank is in a flowing state and is not precipitated, a stirring device in the prior tank body can be omitted, and the sedimentation blockage is not generated; the buffer box has a compact structure, and the buffer box body has a small size; the structure is simple, and the pipeline is convenient to assemble and disassemble; the buffer tank can be applied to a wastewater treatment system in wet desulphurization technology.
2. The utility model provides a be provided with the liquid level measurement device interface with being linked together in the buffer memory case body on the lateral wall of the buffer memory case body of this buffer memory case above the waste water swirler feed pump suction inlet, the liquid level measurement device who sets up outside the buffer memory case body can be through this liquid level measurement device interface and the internal setting of buffer memory case to can test the thick liquid level in the buffer memory case body, can clearly know the volume of the internal thick liquid of buffer memory case through this liquid level measurement device's reading, thereby control the start-stop of waste water swirler feed pump, in order to ensure the steady operation of waste water swirler feed pump under various circumstances, be favorable to waste water treatment system frequency conversion continuous adjustment.
3. This cache case still includes cache case strutting arrangement and overflow pipe strutting arrangement, cache case strutting arrangement sets up in the bottom of cache case body, and this cache case strutting arrangement can support cache case body on the basis, overflow pipe strutting arrangement sets up in the bottom of overflow pipe, and this overflow pipe strutting arrangement can support the overflow pipe on the basis for the structure of this cache case is more firm, supports fixedly easily, has prolonged the life of this cache case.
Drawings
Fig. l is a schematic diagram of the structural connection of the present invention.
Detailed Description
The invention will now be further described by way of the following examples, which are given by way of illustration only and not by way of limitation, and are not intended to limit the scope of the invention.
As shown in figure 1, the supernatant buffer tank for gypsum cyclone for a wet desulfurization system comprises a gypsum cyclone liquid inlet 1, a buffer tank body 2, a waste water cyclone feed pump suction port 3, a buffer tank overflow port 5, a buffer tank bottom flow port 6, an overflow pipe 7, a control valve 8, a liquid level measuring device interface 10, an overflow pipeline back desulfurization system interface 11 and a connecting pipeline 12, wherein the buffer tank body is of a hollow and bottom-sealed tubular vertical structure and is arranged along the vertical direction, the top or the upper part of the outer side wall of the top of the buffer tank body is connected with the inside of the buffer tank body, and a gypsum cyclone liquid inlet is arranged and can be connected with a discharge pipeline of gypsum cyclone overflow slurry in a gypsum primary dehydration system in a desulfurization technology; the upper outer side wall of the buffer tank body is communicated with the inside of the buffer tank body, a buffer tank overflow port is formed in the buffer tank body, the buffer tank overflow port is connected with the upper part of the overflow pipe through a connecting pipeline, one side of the bottom of the overflow pipe is connected with an overflow pipeline return desulfurization system interface, and the overflow pipe is connected with a desulfurization system through the overflow pipeline return desulfurization system interface, so that slurry is circulated and refluxed into the desulfurization system;
the waste water cyclone feeding pump is arranged outside the cache box body and can be connected with the bottom of the cache box body through the waste water cyclone feeding pump suction port, and slurry in the cache box can be discharged to a waste water treatment system through the waste water cyclone feeding pump suction port;
the other side of the bottom of the buffer tank body is communicated with the buffer tank body, a buffer tank bottom flow port is also connected with the other side of the bottom of the overflow pipe through a connecting pipeline, a control valve is arranged on the connecting pipeline between the buffer tank bottom flow port and the overflow pipe, the control valve is not completely closed when the buffer tank operates, and the sum of the underflow flow of the buffer tank bottom flow port and the flow of a feeding pump of the wastewater cyclone is smaller than the incoming liquid flow of the gypsum cyclone, so that the slurry in the buffer tank is in a flowing state, and a stirring device in the previous tank can be omitted;
the utility model discloses a waste water cyclone feed pump, including waste water cyclone feed pump, buffer tank body, liquid level measuring device interface 10 is provided with to be linked together with the inside buffer tank body on the lateral wall of buffer tank body above the waste water cyclone feed pump suction port, the liquid level measuring device who sets up outside the buffer tank body can be through this liquid level measuring device interface and the internal phase setting of buffer tank to can test the thick liquid level in the buffer tank body, can clearly know the volume of the internal thick liquid of buffer tank through this liquid level measuring device's reading, thereby control waste water cyclone feed pump's start-stop, in order to ensure the steady operation of waste water cyclone feed pump under various circumstances, be favorable to waste water treatment system frequency conversion continuous adjustment.
The buffer tank comprises a gypsum cyclone liquid inlet, a buffer tank body, a waste water cyclone feed pump suction port, a buffer tank overflow port, a buffer tank bottom flow port, an overflow pipe, a control valve, a liquid level measuring device interface, an overflow pipeline return desulfurization system interface and a connecting pipeline; the buffer box body of the buffer box is changed into a tubular vertical structure with a hollow and closed bottom, and has the advantages of simple structure, convenient manufacture, small anti-corrosion area, material saving, small occupied space, low device investment, convenient adjustment, and convenient operation and maintenance; when the liquid level in the buffer tank body reaches a certain height, if waste water needs to be treated, a waste water cyclone feeding pump can be started, and the slurry in the buffer tank body is discharged to a waste water treatment system through a suction port of the waste water cyclone feeding pump; if the waste water does not need to be treated, the slurry in the buffer tank body is recycled to the desulfurization system through the overflow port and the underflow; a control valve is arranged on a connecting pipeline between the bottom flow port of the buffer tank and the overflow pipe, the control valve is not completely closed when the buffer tank operates, and the sum of the bottom flow rate of the bottom flow port of the buffer tank and the flow rate of the feeding pump of the wastewater cyclone is smaller than the incoming liquid flow rate of the gypsum cyclone, so that the slurry in the buffer tank is in a flowing state and is not precipitated, a stirring device in the prior tank body can be omitted, and the sedimentation blockage is not generated; the buffer box has a compact structure, and the buffer box body has a small size; the structure is simple, and the pipeline is convenient to assemble and disassemble; the buffer tank can be applied to a wastewater treatment system in wet desulphurization technology.
In this embodiment, the buffer memory case still includes buffer memory case strutting arrangement 4 and overflow pipe strutting arrangement 9, buffer memory case strutting arrangement sets up in the bottom of buffer memory case body, and this buffer memory case strutting arrangement can support buffer memory case body on the basis, overflow pipe strutting arrangement sets up in the bottom of overflow pipe, and this overflow pipe strutting arrangement can support the overflow pipe on the basis for this buffer memory case's structure is more firm, supports fixedly easily, has prolonged this buffer memory case's life.
In this embodiment, the caliber of the bottom flow port of the cache box is smaller than the diameter of the cache box body; and the bottom of the buffer storage box body is plugged by a blind plate.
The using method of the supernatant buffer tank for gypsum cyclone for the wet desulfurization system comprises the following steps:
when the device is used, the liquid inlet of the gypsum cyclone is connected with the overflow port of the gypsum cyclone in an upstream system of the wastewater treatment system, slurry overflowed by the gypsum cyclone enters the buffer tank body from top to bottom through the interface, the slurry is accumulated in the buffer tank body, and the liquid level measuring device is connected with a liquid level measuring device for measuring the liquid level in the tank body through the interface; when the liquid level in the buffer tank body reaches a certain height, if waste water needs to be treated, a waste water cyclone feeding pump can be started, and the slurry in the buffer tank body is discharged to a waste water treatment system through a waste water cyclone feeding pump suction port; if the waste water is not required to be treated, the slurry in the buffer tank body is recycled to the desulfurization system through the overflow port, the overflow pipe, the underflow port and the connecting pipeline of the buffer tank.
Claims (1)
1. The application method of the supernatant buffer tank for the gypsum cyclone for the wet desulfurization system is characterized by comprising the following steps of: the method comprises the following steps:
when the device is used, the liquid inlet of the gypsum cyclone is connected with the overflow port of the gypsum cyclone in an upstream system of the wastewater treatment system, slurry overflowed by the gypsum cyclone enters the buffer tank body from top to bottom through the interface, the slurry is accumulated in the buffer tank body, and the liquid level measuring device is connected with a liquid level measuring device for measuring the liquid level in the tank body through the interface; when the liquid level in the buffer tank body reaches a certain height, if waste water needs to be treated, starting a waste water cyclone feeding pump, and discharging slurry in the buffer tank body to a waste water treatment system through a suction port of the waste water cyclone feeding pump; if the waste water does not need to be treated, the slurry in the buffer tank body is circularly recycled to the desulfurization system through the overflow port, the overflow pipe, the bottom flow port and the connecting pipeline of the buffer tank;
the buffer tank comprises a gypsum cyclone liquid inlet, a buffer tank body, a waste water cyclone feed pump suction port, a buffer tank overflow port, a buffer tank bottom flow port, an overflow pipe, a control valve, a liquid level measuring device interface, an overflow pipeline return desulfurization system interface and a connecting pipeline, wherein the buffer tank body is of a hollow tubular vertical structure with a closed bottom and is arranged along the vertical direction, the top or the upper part of the outer side wall of the top of the buffer tank body is connected with the inside of the buffer tank body, and the gypsum cyclone liquid inlet is arranged and can be connected with a discharge pipeline of gypsum cyclone overflow slurry in a gypsum primary dehydration system in a desulfurization technology; the upper outer side wall of the buffer storage box body is communicated with the inside of the buffer storage box body, the overflow pipe is arranged outside the buffer storage box body, the overflow port of the buffer storage box is connected with the upper part of the overflow pipe through a connecting pipeline, one side of the bottom of the overflow pipe is connected with an overflow pipeline return desulfurization system interface, and the overflow pipe is connected with a desulfurization system through the overflow pipeline return desulfurization system interface;
the waste water cyclone feeding pump is arranged outside the cache box body and can be connected with the bottom of the cache box body through the waste water cyclone feeding pump suction port, and slurry in the cache box can be discharged to a waste water treatment system through the waste water cyclone feeding pump suction port;
the other side of the bottom of the buffer tank body is communicated with the buffer tank body, a buffer tank bottom flow port is also connected with the other side of the bottom of the overflow pipe through a connecting pipeline, a control valve is arranged on the connecting pipeline between the buffer tank bottom flow port and the overflow pipe, the control valve is not completely closed when the buffer tank operates, and the sum of the underflow flow of the buffer tank bottom flow port and the flow of a feeding pump of the wastewater cyclone is smaller than the incoming liquid flow of the gypsum cyclone, so that slurry in the buffer tank body is in a flowing state;
the inner wall of the buffer tank body above the feeding pump suction port of the wastewater cyclone is provided with a liquid level measuring device interface, and a liquid level measuring device arranged outside the buffer tank body can be connected with the inside of the buffer tank body through the liquid level measuring device interface and can test the liquid level of slurry in the buffer tank body;
the buffer storage box further comprises a buffer storage box supporting device and an overflow pipe supporting device, the buffer storage box supporting device is arranged at the bottom of the buffer storage box body, the buffer storage box supporting device can support the buffer storage box body on a foundation, the overflow pipe supporting device is arranged at the bottom of the overflow pipe, and the overflow pipe supporting device can support the overflow pipe on the foundation;
the caliber of the bottom flow port of the cache box is smaller than the diameter of the cache box body; and the bottom of the buffer storage box body is plugged by a blind plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986200.8A CN106563347B (en) | 2016-11-09 | 2016-11-09 | Gypsum rotational flow supernatant buffer tank for wet desulfurization system and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986200.8A CN106563347B (en) | 2016-11-09 | 2016-11-09 | Gypsum rotational flow supernatant buffer tank for wet desulfurization system and application |
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| CN106563347A CN106563347A (en) | 2017-04-19 |
| CN106563347B true CN106563347B (en) | 2023-07-07 |
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| CN111905536B (en) * | 2020-06-17 | 2022-05-24 | 天津国能津能滨海热电有限公司 | Automatic control system for pH value of slurry passing through desulfurization absorption tower |
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| CN1745881A (en) * | 2005-08-16 | 2006-03-15 | 孙克勤 | Gypsum pulp dewatering device and method for wetting smoke desulfurizing system |
| CN202207633U (en) * | 2011-07-27 | 2012-05-02 | 山东电力工程咨询院有限公司 | Novel gypsum slurry overflowing box |
| CN203610039U (en) * | 2013-12-25 | 2014-05-28 | 蓝天环保设备工程股份有限公司 | Desulfurization waste water drainage device |
| CN206168215U (en) * | 2016-11-09 | 2017-05-17 | 航天环境工程有限公司 | Supernatant caching tank of wet flue gas desulfurization gypsum whirl for system |
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2016
- 2016-11-09 CN CN201610986200.8A patent/CN106563347B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745881A (en) * | 2005-08-16 | 2006-03-15 | 孙克勤 | Gypsum pulp dewatering device and method for wetting smoke desulfurizing system |
| CN202207633U (en) * | 2011-07-27 | 2012-05-02 | 山东电力工程咨询院有限公司 | Novel gypsum slurry overflowing box |
| CN203610039U (en) * | 2013-12-25 | 2014-05-28 | 蓝天环保设备工程股份有限公司 | Desulfurization waste water drainage device |
| CN206168215U (en) * | 2016-11-09 | 2017-05-17 | 航天环境工程有限公司 | Supernatant caching tank of wet flue gas desulfurization gypsum whirl for system |
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