CN218371879U - Device for reducing salt content of desulfurization process water during seawater backflow - Google Patents
Device for reducing salt content of desulfurization process water during seawater backflow Download PDFInfo
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- CN218371879U CN218371879U CN202222453134.1U CN202222453134U CN218371879U CN 218371879 U CN218371879 U CN 218371879U CN 202222453134 U CN202222453134 U CN 202222453134U CN 218371879 U CN218371879 U CN 218371879U
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- water tank
- industrial water
- reverse osmosis
- desulfurization process
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model relates to a technical field's of flue gas desulfurization engineering a device that reduces desulfurization process water salinity when being used for sea water to flow backward, including reverse osmosis to the female pipe of industrial water tank, reverse osmosis to first phase industrial water tank and reverse osmosis to second phase industrial water tank branch pipe are connected respectively to the female pipe end of industrial water tank to reverse osmosis, reverse osmosis communicates to first phase industrial water tank and reverse osmosis to second phase industrial water tank branch pipe respectively to first phase industrial water tank and second phase industrial water tank, reverse osmosis is provided with booster pump, a contact valve, check valve and No. two contact valves according to this on the female pipe of industrial water tank, reverse osmosis is provided with the water tank contact valve to first phase industrial water tank on, can effectively reduce the conductivity of industrial water in the industrial water tank to desulfurization process water salinity has been reduced.
Description
Technical Field
The utility model relates to a device for reducing the salt content of desulfurization process water when seawater flows backward belongs to the technical field of flue gas desulfurization engineering.
Background
The flue gas desulfurization engineering of a coal-fired unit of a certain thermal power plant adopts a limestone-gypsum wet desulfurization process, and a desulfurization process system comprises: limestone storage and slurry preparation system, absorption tower system, gypsum dehydration system, process water system, accident slurry and drainage pit system, wastewater treatment system and the like. Wherein the limestone storage and slurry preparation system, the gypsum dehydration system, the process water system and the wastewater treatment system are public for the whole plant unit. The shared process water system provides desulfurization process water for the desulfurization process system, the water supplement of the system comes from an industrial water tank, and fire water is used as an emergency water source.
The raw water is treated by clarification and filtration to be used as industrial water, the industrial water is conveyed and pumped to an industrial water tank for storage, one part of the industrial water is used as industrial water of the whole plant, and the other part of the industrial water is used as water supplement of a desulfurization process. And the reverse osmosis water prepared by the reverse osmosis device is supplied to a desalination system by a booster pump to further remove salt.
In recent years, during the period of seawater backflow, the highest conductivity of seawater reaches 12000us/cm, raw water for preparing industrial water is taken into seawater, the salt content of the industrial water is increased, the highest chloride ion content of desulfurization process water is more than 5000mg/L, the content of slurry and gypsum chloride root in an absorption tower is high, the desulfurization efficiency is reduced, the absorption tower bubbles and overflows, metal components in the absorption tower are corroded, gypsum slurry is difficult to dewater, the quality of byproduct gypsum is poor, the discharge amount of desulfurization wastewater is increased, and the like, so that the safe and stable operation of a desulfurization system is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a device for reducing the salt content of the desulfurization process water when seawater flows backwards.
The technical scheme of the utility model as follows:
the device comprises a reverse osmosis to industrial water tank main pipe, wherein the tail end of the reverse osmosis to industrial water tank main pipe is respectively connected with a reverse osmosis to first-stage industrial water tank and a reverse osmosis to second-stage industrial water tank branch pipe, the reverse osmosis to first-stage industrial water tank and the reverse osmosis to second-stage industrial water tank branch pipe are respectively communicated with the first-stage industrial water tank and the second-stage industrial water tank, the reverse osmosis to industrial water tank main pipe is sequentially provided with a booster pump, a first connecting valve, a check valve and a second connecting valve, and the reverse osmosis to first-stage industrial water tank is provided with a water tank connecting valve.
And a salt removing system branch is connected to the downstream of the booster pump on the reverse osmosis-to-industrial water tank main pipe.
The first-stage industrial water tank is connected with a first-stage industrial water pipeline, and a first-stage industrial water pump is arranged on the first-stage industrial water pipeline.
The second-stage industrial water tank is connected with a desulfurization process water pipeline, and a desulfurization process water pump is arranged on the desulfurization process water pipeline.
The utility model discloses following beneficial effect has:
the utility model discloses the sea water flows backward seriously period, open a contact valve, no. two contact valves, close water tank contact valves, start the booster pump and supply reverse osmosis water to industrial water tank, dilute industrial water, can effectively reduce the salt content of industrial water in the second phase industrial water tank, thereby the desulfurization process water salt content has been reduced, the purpose that reduces desulfurization absorption tower thick liquid and gypsum cake chloride ion content has been reached, can improve desulfurization efficiency, effectively prevent absorption tower bubbling overflow, reduce the corruption of metal component in the absorption tower, prevent that gypsum dewatering performance from descending, reduce the emission of desulfurization waste water, energy saving and emission reduction effect is obvious.
Drawings
Fig. 1 is a schematic diagram of a pipeline structure of the device for reducing the salt content of the desulfurization process water when seawater flows backward.
The reference numbers in the figures denote:
the system comprises a 1-reverse osmosis to industrial water tank main pipe, a 2-reverse osmosis to first-stage industrial water tank, a 3-reverse osmosis to second-stage industrial water tank branch pipe, a 4-first-stage industrial water tank, a 5-second-stage industrial water tank, a 6-booster pump, a 7-first connecting valve, an 8-check valve, a 9-second connecting valve, a 10-water tank connecting valve, an 11-desalting system branch pipe, a 12-first-stage industrial water pipeline, a 13-first-stage industrial water pump, a 14-desulfurization process water pipeline and a 15-desulfurization process water pump.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, a device for reducing the salt content of desulfurization process water during seawater backflow comprises a reverse osmosis to industrial water tank main pipe 1, wherein the tail end of the reverse osmosis to industrial water tank main pipe 1 is respectively connected with a reverse osmosis to first-stage industrial water tank 2 and a reverse osmosis to second-stage industrial water tank branch pipe 3, the reverse osmosis to first-stage industrial water tank 2 and the reverse osmosis to second-stage industrial water tank branch pipe 3 are respectively communicated with a first-stage industrial water tank 4 and a second-stage industrial water tank 5, and a booster pump 6, a first connecting valve 7, a check valve 8 and a second connecting valve 9 are sequentially arranged on the reverse osmosis to industrial water tank main pipe 1, so that reverse osmosis water can be supplemented to the second-stage industrial water tank 5 by the booster pump 6, industrial water can be diluted, the salt content of the industrial water can be effectively reduced, the salt content of the desulfurization process water is reduced, and the aim of reducing the chloride ion content of a desulfurization absorption tower slurry and a gypsum cake is achieved; the reverse osmosis to the first-stage industrial water tank 2 is provided with a water tank communication valve 10, so that the complementary mutual delivery and mutual standby functions of industrial water can be achieved.
In addition, a salt removing system branch 11 is connected to the reverse osmosis industrial water tank main pipe 1 at the downstream of the booster pump 6, and is connected to a downstream device of reverse osmosis water through the salt removing system branch 11.
In addition, the first-stage industrial water tank 4 is connected with a first-stage industrial water pipe 12, a first-stage industrial water pump 13 is provided on the first-stage industrial water pipe 12, and industrial water can be supplied to each unit by providing the first-stage industrial water pipe 12 and the first-stage industrial water pump 13.
In addition, the second-stage industrial water tank 5 is connected with a desulfurization process water pipeline 14, a desulfurization process water pump 15 is arranged on the desulfurization process water pipeline 14, and process water can be supplied to a desulfurization system by arranging the desulfurization process water pipeline 14 and the desulfurization process water pump 15.
The utility model discloses a theory of operation:
in the severe seawater backflow period, the first connection valve 7 and the second connection valve 9 are opened, the water tank connection valve 10 is closed, the booster pump 6 is started, and reverse osmosis water is supplemented to the second-stage industrial water tank 5.
When the seawater is not poured backwards, the first connecting valve 7 and the second connecting valve 9 are closed, and the pressure of the outlet of the booster pump 6 is higher and the check valve 8 is arranged, so that water in the first-stage industrial water tank 4 and the second-stage industrial water tank 5 cannot flow backwards, and normal water replenishing of the first-stage industrial water tank 4 and the second-stage industrial water tank 5 is not influenced.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (4)
1. A device for reducing the salt content of desulfurization process water during seawater backflow is characterized in that: including reverse osmosis to female pipe of industrial water tank (1), reverse osmosis connects reverse osmosis to first phase industrial water tank (2) and reverse osmosis to second phase industrial water tank branch pipe (3) respectively to female pipe of industrial water tank (1) end, reverse osmosis communicates to first phase industrial water tank (4) and second phase industrial water tank (5) respectively to first phase industrial water tank (2) and reverse osmosis to second phase industrial water tank branch pipe (3), reverse osmosis is provided with booster pump (6), a tie valve (7), check valve (8) and No. two tie valves (9) according to this on female pipe of industrial water tank (1), reverse osmosis is provided with water tank tie valve (10) on to first phase industrial water tank (2).
2. The apparatus of claim 1, wherein the apparatus is used for reducing the salt content of the desulfurization process water during seawater reverse flow, and comprises: and a salt removing system branch (11) is connected to the reverse osmosis to industrial water tank main pipe (1) at the downstream of the booster pump (6).
3. The apparatus of claim 1, wherein the apparatus is used for reducing the salt content of the desulfurization process water during seawater reverse flow, and comprises: the first-stage industrial water tank (4) is connected with a first-stage industrial water pipeline (12), and a first-stage industrial water pump (13) is arranged on the first-stage industrial water pipeline (12).
4. The apparatus according to claim 1, wherein the apparatus for reducing the salt content of the desulfurization process water during the reverse flow of seawater comprises: the second-stage industrial water tank (5) is connected with a desulfurization process water pipeline (14), and a desulfurization process water pump (15) is arranged on the desulfurization process water pipeline (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222453134.1U CN218371879U (en) | 2022-09-16 | 2022-09-16 | Device for reducing salt content of desulfurization process water during seawater backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222453134.1U CN218371879U (en) | 2022-09-16 | 2022-09-16 | Device for reducing salt content of desulfurization process water during seawater backflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218371879U true CN218371879U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222453134.1U Active CN218371879U (en) | 2022-09-16 | 2022-09-16 | Device for reducing salt content of desulfurization process water during seawater backflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218371879U (en) |
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2022
- 2022-09-16 CN CN202222453134.1U patent/CN218371879U/en active Active
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