CN213668692U - Device for reducing chloride ion concentration in slurry for wet desulphurization - Google Patents
Device for reducing chloride ion concentration in slurry for wet desulphurization Download PDFInfo
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- CN213668692U CN213668692U CN202022464807.4U CN202022464807U CN213668692U CN 213668692 U CN213668692 U CN 213668692U CN 202022464807 U CN202022464807 U CN 202022464807U CN 213668692 U CN213668692 U CN 213668692U
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Abstract
The utility model discloses a device for reducing the concentration of chloride ions in slurry for wet desulphurization, which comprises a waste liquid recovery unit and a limestone slurry pulping unit; the waste liquid recovery unit comprises a first filter water tank, a second filter water tank and a waste water tank corresponding to filter liquid in different functional areas of the vacuum belt dehydrator; the liquid inlet end of the first filtering water tank is connected with the waste liquid recovery tank A, and the first filtering water tank comprises two liquid outlet ends which are respectively connected with the limestone slurry pulping unit and the second filtering water tank; the liquid inlet end of the second filter tank is connected with the waste liquid recovery box B, and the liquid outlet end of the second filter tank is connected with the waste water tank. The device carries out the subarea treatment on the filtered water generated by different functional areas of the vacuum belt dehydrator, thereby solving the problem of high content of chloride ions in limestone slurry caused by the pulping of limestone by the filtered water.
Description
Technical Field
The utility model belongs to the field, concretely relates to reduce device of chloride ion concentration in slurry for wet flue gas desulfurization.
Background
In the prior art, when the content of chloride ions in slurry used in a wet desulfurization absorption tower is high, the desulfurization efficiency is reduced, the slurry is easy to generate foam in the desulfurization treatment process, and toxic gas is released into the air, so that a poisoning event of workshop workers is caused. The used absorption tower needs to remove mud and waste water, new limestone slurry needs to be continuously supplemented in the process, the existing limestone slurry is prepared into slurry by filtering water in order to save cost, and the content of chloride ions in the filtered water is higher, so that the content of chloride ions in the limestone slurry is higher, and the treatment effect of the absorption tower is reduced.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a reduce device of chloride ion concentration in thick liquid for wet flue gas desulfurization.
Realize above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
a device for reducing the concentration of chloride ions in slurry for wet desulphurization comprises a waste liquid recovery unit and a limestone slurry pulping unit which are connected with a vacuum belt dehydrator;
the vacuum belt dehydrator comprises a waste liquid recovery box A and a waste liquid recovery box B, wherein the waste liquid recovery box A is used for placing filter liquid corresponding to washing water and lubricating water, and the waste liquid recovery box B is used for placing filter liquid corresponding to gypsum slurry; the waste liquid recovery unit comprises a first filter water tank, a second filter water tank and a waste water tank; the liquid inlet end of the first filtering water tank is connected with the waste liquid recovery tank A, and the first filtering water tank comprises two liquid outlet ends which are respectively connected with the limestone slurry pulping unit and the second filtering water tank; the liquid inlet end of the second filter water tank is connected with the waste liquid recovery tank B, and the liquid outlet end of the second filter water tank is connected with the waste water tank;
the first filtering water tank controls the opening of one liquid outlet end according to the detected concentration of the chloride ions.
As a further improvement of the present invention, in the first filtering water tank, if the concentration of the detected chloride ions is lower than a set threshold, the first filtering water tank is communicated with the limestone slurry pulping unit; and if the concentration of the detected chloride ions is higher than a set threshold value, the first filtering water tank is communicated with the second filtering water tank.
As a further improvement of the utility model, the first filtering water tank with the limestone slurry slurrying unit between, and the second filtering water tank with the waste water tank between be equipped with the filtration pump.
As a further improvement of the utility model, the waste liquid recovery box B still with the end of intaking in first filtering ponds links to each other.
As a further improvement of the utility model, the separator is connected to the liquid end is gone out to waste liquid recovery case B, the play liquid end of separator includes two drainage pipe ways.
As a further improvement of the present invention, the limestone slurry slurrying unit includes a circulation box, a wet ball mill, a cyclone and a circulation pump which are connected in a circulating manner, and further includes a limestone slurry box, the circulation box and the wet ball mill are provided with an interface connected with the first filtering water tank, and an overflow end of the cyclone is connected with the limestone slurry box.
The utility model has the advantages that: the device carries out the subarea treatment on the filtered water generated by different functional areas of the vacuum belt dehydrator, thereby solving the problem of high content of chloride ions in limestone slurry caused by the pulping of limestone by the filtered water.
Drawings
FIG. 1 is a layout of the apparatus of the present invention;
wherein: the method comprises the following steps of 1-a vacuum belt dehydrator, 2-a waste liquid recovery box A, 3-a waste liquid recovery box B, 4-a first filter water tank, 5-a second filter water tank, 6-a waste water tank, 7-a filter pump, 8-a separator, 901-a circulating box, 902-a wet ball mill, 903-a circulating pump, 904-a swirler, 905-a limestone slurry box and a 10-chloride ion concentration sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following description is made in detail for the application of the principles of the present invention with reference to the accompanying drawings.
The device for reducing the concentration of chloride ions in the slurry for wet desulphurization mainly comprises a waste liquid recovery unit and a limestone slurry pulping unit which are connected with a vacuum belt dehydrator 1. The vacuum belt dehydrator 1 comprises a plurality of different functional areas, and the concentration of chloride ions in the wastewater filtered from each functional area is different, so the device can be used for distinguishing and treating the filtered liquid of different functional areas of the vacuum belt dehydrator, continuously using the wastewater with low chloride ion content as limestone slurry, and recycling the waste liquid with high chloride ion content into the wastewater tank 6.
Specifically, the vacuum belt dehydrator 1 includes a waste liquid recovery tank a2 for storing a filtrate corresponding to washing water and lubricating water and a waste liquid recovery tank B3 corresponding to a filtrate of gypsum slurry. Generally, the filtered water flowing into the waste liquid recovery tank a2 has a low chloride ion concentration, and the filtered water flowing into the waste liquid recovery tank B3 has a high chloride ion concentration.
The waste liquid recovery unit comprises a first filter water tank 4, a second filter water tank 5 and a waste water tank 6.
Wherein, first filtering water tank 4's inlet end with waste liquid recovery case A2 link to each other, first filtering water tank 4 include two play liquid ends, respectively with limestone slurry slurrying unit with second filtering water tank 5 link to each other. A chloride ion concentration sensor 10 (a commercially available common chemical sensor for detecting chloride ion concentration) for detecting chloride ion concentration is arranged in the first filtering water tank 4, and the first filtering water tank 4 is correspondingly communicated with one of the liquid outlet ends according to the detected chloride ion concentration. Specifically, if the concentration of the detected chloride ions is lower than a set threshold value, the first filter water tank 4 is communicated with the limestone slurry pulping unit to use the filtrate for pulping; if the concentration of the detected chloride ions is higher than the set threshold value, the first filtering water tank 4 is communicated with the second filtering water tank 5, and finally the chloride ions are collected in a waste water tank 6.
The liquid inlet end of the second filter water tank 5 is connected with the waste liquid recovery tank B3, and the liquid outlet end of the second filter water tank 5 is connected with the waste water tank 6. The filtrate of the gypsum slurry after being filtered again by the absorption tower contains chloride ions with high concentration generally, and is not suitable for being recycled, but the filtrate is recycled once. Therefore, in the utility model, the waste liquid recovery box B3 still with the end of intaking of first filtering ponds 4 links to each other. The liquid discharge end at the lower end of the separator 8 arranged at the liquid outlet end of the waste liquid recovery tank B3 comprises two liquid discharge pipelines which are respectively connected with the first filtering water tank 4 and the second filtering water tank 5, and the two liquid discharge pipelines are provided with control valves which can divide the filtering liquid in the waste liquid recovery tank B3. Since the flow direction of the liquid is determined by the concentration of the chlorine ions in the first filtered water tank 4, the filtrate in the waste liquid recovery tank B3 is again transferred to the second filtered water tank 5 and discharged even if the concentration of the chlorine ions is high.
And a filter pump 7 is arranged between the first filter water tank 4 and the limestone slurry pulping unit and between the second filter water tank 5 and the wastewater tank 6 and is used for controlling the flow of the filter liquid in a timing or quantitative manner.
In addition, the specific structure of the limestone slurry pulping unit of the present invention includes a circulation box 901, a wet ball mill 902, a cyclone 904 and a circulation pump 903, which are connected in a circulation manner, and further includes a limestone slurry box 905, the circulation box 901 and the wet ball mill 902 are provided with an interface connected to the first filtering water tank 4, and an overflow end of the cyclone 904 is connected to the limestone slurry box 905.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A device for reducing the concentration of chloride ions in slurry for wet desulphurization is characterized in that: comprises a waste liquid recovery unit and a limestone slurry pulping unit which are connected with a vacuum belt dehydrator;
the vacuum belt dehydrator comprises a waste liquid recovery box A and a waste liquid recovery box B, wherein the waste liquid recovery box A is used for placing filter liquid corresponding to washing water and lubricating water, and the waste liquid recovery box B is used for placing filter liquid corresponding to gypsum slurry; the waste liquid recovery unit comprises a first filter water tank, a second filter water tank and a waste water tank; the liquid inlet end of the first filtering water tank is connected with the waste liquid recovery tank A, and the first filtering water tank comprises two liquid outlet ends which are respectively connected with the limestone slurry pulping unit and the second filtering water tank; the liquid inlet end of the second filter water tank is connected with the waste liquid recovery tank B, and the liquid outlet end of the second filter water tank is connected with the waste water tank;
the first filtering water tank controls the opening of one liquid outlet end according to the detected concentration of the chloride ions.
2. The apparatus for reducing the concentration of chloride ions in a slurry for wet desulfurization according to claim 1, wherein: in the first filtering water tank, if the concentration of the detected chloride ions is lower than a set threshold value, the first filtering water tank is communicated with the limestone slurry pulping unit; and if the concentration of the detected chloride ions is higher than a set threshold value, the first filtering water tank is communicated with the second filtering water tank.
3. The apparatus for reducing the concentration of chloride ions in a slurry for wet desulfurization according to claim 1, wherein: and a filter pump is arranged between the first filter water tank and the limestone slurry pulping unit and between the second filter water tank and the waste water tank.
4. The apparatus for reducing the concentration of chloride ions in a slurry for wet desulfurization according to claim 1, wherein: and the waste liquid recovery box B is also connected with the water inlet end of the first filter water tank.
5. The apparatus for reducing the concentration of chloride ions in a slurry for wet desulfurization according to claim 4, wherein: the separator is connected to the liquid outlet end of the waste liquid recovery box B, and the liquid outlet end of the separator comprises two liquid drainage pipelines.
6. The apparatus for reducing the concentration of chloride ions in a slurry for wet desulfurization according to claim 1, wherein: the limestone slurry pulping unit comprises a circulation box, a wet ball mill, a cyclone and a circulation pump which are in circulation connection, and further comprises a limestone slurry box, the circulation box and the wet ball mill are provided with interfaces connected with the first filtering water tank, and the overflow end of the cyclone is connected with the limestone slurry box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022464807.4U CN213668692U (en) | 2020-10-30 | 2020-10-30 | Device for reducing chloride ion concentration in slurry for wet desulphurization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022464807.4U CN213668692U (en) | 2020-10-30 | 2020-10-30 | Device for reducing chloride ion concentration in slurry for wet desulphurization |
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| CN213668692U true CN213668692U (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877403A (en) * | 2021-11-02 | 2022-01-04 | 福建龙净环保股份有限公司 | Slurry regulating and controlling method for limestone-gypsum wet flue gas desulfurization process |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877403A (en) * | 2021-11-02 | 2022-01-04 | 福建龙净环保股份有限公司 | Slurry regulating and controlling method for limestone-gypsum wet flue gas desulfurization process |
| CN113877403B (en) * | 2021-11-02 | 2023-07-18 | 福建龙净环保股份有限公司 | Slurry regulation and control method for limestone-gypsum wet flue gas desulfurization process |
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