Desulfurized water purification device

Abstract

The utility model discloses a desulfurized water purification device which comprises a settling cylinder and a filter press, the settling cylinder is communicated with the bottom of a spray tower, an underflow port is arranged in the center of the bottom of the settling cylinder, one end of the filter press is communicated with the underflow port, the other end of the filter press is communicated with the spray tower, an overflow weir communicated with the spray tower is arranged on the upper portion of the settling cylinder, and an oil scraping piece is movably connected in the settling cylinder. The nozzle is prevented from being blocked, the cleaning is simple and convenient, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater purification, in particular to a desulfurized water purification device. Background Art

[0002] The flue gas from the kilns in the carbon industry contains a large amount of sulfur, which needs to be desulfurized to prevent air pollution. Desulfurization refers to fixing the sulfur in the flue gas with calcium-based methods to form calcium sulfate. Generally, a spray tower is used for spray desulfurization. The flue gas reacts fully with the spray water, so that sulfur dioxide reacts with the calcium hydroxide in the spray water to form calcium sulfate. At the same time, the dust in the flue gas is intercepted by the spray water and deposited in the spray water, eliminating the dust while purifying the flue gas.

[0003] In order to achieve the purpose of recycling, the spray water (desulfurized water) after desulfurization needs to be filtered. Otherwise, a large amount of calcium sulfate and dust generated by desulfurization will remain in the desulfurized water, causing the concentration of circulating water to increase. Calcium sulfate and dust will continue to accumulate into blocks, which will cause the spray tower nozzle to be blocked, affecting the flue gas treatment effect. However, after long-term use, the dust deposited in the desulfurized water will block the filter device, increase the cost of manual cleaning and reduce the treatment efficiency of the desulfurized water. In addition, the flue gas also contains some tar. The knocked-off tar floats on the upper layer of the desulfurized water and will stick to the filter device to cause blockage, making manual cleaning difficult. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a desulfurized water purification device which can avoid nozzle blockage, is simple and convenient to clean and reduces costs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A desulfurized water purification device comprises a sedimentation cylinder and a filter press. The sedimentation cylinder is connected to the bottom of a spray tower. An underflow port is arranged at the center of the bottom of the sedimentation cylinder. One end of the filter press is connected to the underflow port and the other end is connected to the spray tower. An overflow weir connected to the spray tower is arranged on the upper part of the sedimentation cylinder. An oil scraper is movably connected inside the sedimentation cylinder.

[0007] As a further improvement of the above technical solution:

[0008] The sedimentation cylinder is also provided with a dosing machine, and the dosing machine contains flocculant.

[0009] The bottom of the sedimentation cylinder is set in a cone shape, and a mud gathering and stirring component is arranged in the sedimentation cylinder in a vertical direction at the center.

[0010] The mud gathering and stirring assembly comprises a driving member, a rotating shaft and a rake. The upper end of the rotating shaft is movably connected to the sedimentation cylinder, and the lower end of the rotating shaft is fixedly connected to the rake.

[0011] The oil scraping member is configured as a scraper, and the scraper is fixedly connected to the rotating shaft.

[0012] An oil discharge port is provided on the sedimentation cylinder.

[0013] It also includes a buffer pool, which is connected to the overflow weir, the filter press and the spray tower respectively.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] The desulfurized water purification device of the utility model, when in use, the delivery pump delivers the desulfurized water in the spray tower to the settling cylinder, the settling cylinder precipitates the calcium sulfate, dust and the like in the desulfurized water, the tar on the top layer is collected by the oil scraper, and then the clear liquid is delivered to the spray tower through the overflow weir for spraying, the sediment of the lower layer is delivered from the bottom flow port to the filter press by the filter press pump for pressure filtration and dehydration, and the clear liquid obtained by the pressure filtration can also enter the spray tower for spraying, so as to realize the recycling of desulfurized water. Compared with the traditional desulfurized water filtering device, the utility model adopts the sedimentation method to purify the desulfurized water, so as to avoid the situation that the sediment blocks the filtering device. Furthermore, in order to avoid the loss of desulfurized water, the filter press is used to filter and dehydrate the settled sediment. When cleaning, it is only necessary to take out the filter plate to clean the filter residue, which is simple and convenient. In addition, the oil scraper is set to collect the floating tar on the upper layer of the desulfurized water, so as to avoid the tar blocking the filter cloth of the filter press, reduce the replacement of the filter cloth, and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] The symbols in the figure represent:

[0018] 1. Sedimentation cylinder; 11. Bottom flow outlet; 12. Overflow weir; 13. Oil discharge outlet; 2. Filter press; 3. Spray tower; 4. Oil scraper; 5. Mud agitation assembly; 51. Driving part; 52. Rotating shaft; 53. Rake; 6. Dosing machine; 7. Buffer tank; 8. Filter press pump; 9. Spray pump; 10. Delivery pump. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1As shown, the desulfurized water purification device of this embodiment includes a settling cylinder 1 and a filter press 2. The settling cylinder 1 is connected to the bottom of the spray tower 3. An underflow port 11 is provided at the center of the bottom of the settling cylinder 1. One end of the filter press 2 is connected to the underflow port 11, and the other end is connected to the spray tower 3. An overflow weir 12 connected to the spray tower 3 is provided on the upper part of the settling cylinder 1. An oil scraper 4 is movably connected in the settling cylinder 1. When in use, the delivery pump 10 delivers the desulfurized water in the spray tower 3 to the settling cylinder 1. The settling cylinder 1 precipitates calcium sulfate, dust, etc. in the desulfurized water. The tar on the top layer is collected by the oil scraper 4. Then, the clear liquid is delivered to the spray tower 3 through the overflow weir 12 for spraying. The sediment in the lower layer is delivered from the underflow port 11 to the filter press 2 through the filter press pump 8 for filter pressing and dehydration. The clear liquid obtained by filter pressing can also enter the spray tower 3 for spraying, so as to realize the recycling of desulfurized water. Compared with the traditional desulfurized water filtering device, the utility model adopts the sedimentation method to purify the desulfurized water to avoid the situation where the sediment blocks the filtering device. Furthermore, in order to avoid the loss of desulfurized water, the filter press 2 is used to filter and dehydrate the settled sediment. When cleaning, only the filter plate needs to be removed to clean the filter residue, and the cleaning is simple and convenient. In addition, the oil scraper 4 is set to collect the tar floating on the upper layer of the desulfurized water to avoid the tar blocking the filter cloth of the filter press 2, thereby reducing the replacement of the filter cloth and reducing the cost.

[0021] In this embodiment, a dosing machine 6 is further provided on the sedimentation cylinder 1, and flocculants are contained in the dosing machine 6. In this structure, the dosing machine 6 is provided to add flocculants to the desulfurized water, thereby further improving the sedimentation efficiency.

[0022] In this embodiment, the bottom of the settling cylinder 1 is set in a conical shape, and a mud agitation component 5 is provided in the center vertical direction of the settling cylinder 1. In this structure, the conical bottom is conducive to the sedimentation of calcium sulfate and dust at the bottom of the desulfurized water, accelerates the sedimentation speed, and improves the efficiency. The mud agitation component 5 is provided to fully mix the flocculant with the calcium sulfate and dust in the desulfurized water, further improving the sedimentation efficiency. In addition, the mud agitation component 5 collects the sediment to the bottom center of the settling cylinder 1, so as to facilitate discharge from the bottom flow port 11.

[0023] In this embodiment, the mud agitation assembly 5 includes a driving member 51, a rotating shaft 52 and a rake 53. The upper end of the rotating shaft 52 is movably connected to the sedimentation cylinder 1, and the lower end of the rotating shaft 52 is fixedly connected to the rake 53. The structure is simple, and the driving member 51 drives the rotating shaft 52 to rotate, driving the rake 53 to scrape the sediment into the bottom flow port 11.

[0024] In this embodiment, the scraper 4 is configured as a scraper, and the scraper is fixedly connected to the rotating shaft 52. The structure is simple, and the scraper is fixedly connected to the rotating shaft 52, and follows the rotating shaft 52 to rotate and scrape the oil.

[0025] In this embodiment, an oil discharge port 13 is provided on the sedimentation cylinder 1. The oil discharge port 13 is provided to facilitate the collection and discharge of tar.

[0026] In this embodiment, a buffer pool 7 is also included, and the buffer pool 7 is respectively connected to the overflow weir 12, the filter press 2 and the spray tower 3. In this structure, by setting a buffer pool 7, the clear liquid discharged from the overflow weir 12 and the clear liquid filtered by the filter press 2 are buffered to ensure the continuous and stable circulation of the desulfurized water.

[0027] Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A desulfurized water purification device, characterized in that: The invention comprises a settling cylinder (1) and a filter press (2), wherein the settling cylinder (1) is connected to the bottom of a spray tower (3), a bottom flow port (11) is provided at the center of the bottom of the settling cylinder (1), one end of the filter press (2) is connected to the bottom flow port (11), and the other end is connected to the spray tower (3), an overflow weir (12) connected to the spray tower (3) is provided at the top of the settling cylinder (1), and an oil scraper (4) is movably connected inside the settling cylinder (1).

2. The desulfurized water purification device according to claim 1, characterized in that: The sedimentation cylinder (1) is also provided with a dosing machine (6), and the dosing machine (6) contains a flocculant.

3. The desulfurized water purification device according to claim 1, characterized in that: The bottom of the sedimentation cylinder (1) is arranged in a conical shape, and a mud agitation assembly (5) is arranged in the sedimentation cylinder (1) in a vertical direction at the center.

4. The desulfurized water purification device according to claim 3, characterized in that: The mud agitation assembly (5) comprises a driving member (51), a rotating shaft (52) and a rake (53); the upper end of the rotating shaft (52) is movably connected to the sedimentation cylinder (1), and the lower end of the rotating shaft (52) is fixedly connected to the rake (53).

5. The desulfurized water purification device according to claim 4, characterized in that: The oil scraping member (4) is configured as a scraper, and the scraper is fixedly connected to the rotating shaft (52).

6. The desulfurized water purification device according to claim 5, characterized in that: The sedimentation cylinder (1) is provided with an oil discharge port (13).

7. The desulfurized water purification device according to any one of claims 1 to 6, characterized in that: It also includes a buffer pool (7), which is connected to the overflow weir (12), the filter press (2) and the spray tower (3) respectively.

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