Balancing tank device for controlling backflow of fresh desulfurized slurry
By designing a device that includes a fresh slurry tank, a delivery pump, a top tank, and a balance tank, the wear and corrosion problems of the reflux valve and reflux pipeline under high pressure impact were solved, and the stable operation of the desulfurization system and precise slurry control were achieved.
Patent Information
- Application Number
- CN202423241737.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In existing technologies, reflux valves and reflux pipes are prone to wear and corrosion under high pressure impact, leading to slurry leakage and affecting production stability.
Design a device that includes a fresh slurry tank, a transfer pump, a top tank, a balance tank, and a return pipe. The balance tank allows the slurry to enter from the bottom and overflow into the return pipe, reducing the pressure impact on the return valve and the return pipe. Combined with the venting pipe, the device maintains the liquid surface pressure balance.
It effectively extends the service life of the reflux valve and reflux pipeline, ensuring the stable operation of the desulfurization system and precise control of the fresh slurry volume.
Smart Images
Figure CN223628409U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of steel industry flue gas purification, especially relates to sintering, coking flue gas desulfurization technology, and particularly to a kind of control desulfurization fresh slurry reflux balance tank device. BACKGROUND
[0002] In the field of sintering, coking flue gas purification technology, rotary spray semi-dry method is more widely used, and the process flow of rotary spray semi-dry method is to send desulfurization fresh slurry to the top of desulfurization tower by conveying pump, and after atomization, it is mixed with flue gas in the desulfurization tower for desulfurization. In this entire desulfurization process, the amount of fresh slurry into the top tank is an important component. Desulfurization fresh slurry is lime slurry with a solid content of 20%-25%. To more accurately control the amount of fresh slurry into the top tank, a fresh slurry reflux pipeline is designed in the desulfurization system, and the amount of fresh slurry into the top tank is controlled by adjusting the reflux valve on the reflux pipeline. However, in actual production process, the reflux pipeline is directly connected with the slurry inlet pipeline, which causes the reflux valve to bear a large pressure, and the reflux pipeline will be worn and corroded under high pressure impact, causing slurry leakage, which will seriously affect production. SUMMARY
[0003] The utility model aims at providing a kind of control desulfurization fresh slurry reflux balance tank device, and the control desulfurization fresh slurry reflux balance tank device of this kind solves the technical problem that reflux valve and reflux pipeline bear large pressure impact in prior art.
[0004] The control desulfurization fresh slurry reflux balance tank device of the utility model, including fresh slurry tank, conveying pump, top tank and balance tank, the fresh slurry tank is connected with conveying pump, conveying pump is connected with the one end of first slurry conveying pipeline, the other end of first slurry conveying pipeline is connected with the one end of second slurry conveying pipeline and third slurry conveying pipeline, the other end of second slurry conveying pipeline is connected with top tank, third slurry conveying pipeline is connected with the bottom of balance tank, the side lower part of balance tank is connected with the one end of reflux pipeline, the other end of reflux pipeline is connected with fresh slurry tank, the reflux pipeline is provided with reflux valve.
[0005] Further, the side upper part of the balance tank is connected with the one end of the exhaust pipeline, and the other end of the exhaust pipeline is connected with the top tank.
[0006] Further, the first slurry conveying pipeline is connected with the second slurry conveying pipeline and the third slurry conveying pipeline respectively through a tee joint.
[0007] Compared with the prior art, the effect of the utility model is positive and obvious. The utility model discloses a kind of balance tank devices for controlling desulfurization fresh slurry reflux, including fresh slurry tank 1, delivery pump 2, top tank 5 and balance tank 7, fresh slurry tank 1 is connected with delivery pump 2, delivery pump 2 is connected with the one end of first slurry delivery pipeline 3, the other end of first slurry delivery pipeline 3 is connected with the one end of second slurry delivery pipeline 4 and third slurry delivery pipeline 6, the other end of second slurry delivery pipeline 4 is connected with top tank 5, third slurry delivery pipeline 6 is connected with the bottom of balance tank 7, the side lower part of balance tank 7 is connected with the one end of reflux pipeline 8, the other end of reflux pipeline 8 is connected with fresh slurry tank 1, reflux pipeline 8 is provided with reflux valve 9. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is the structure schematic diagram of the utility model.
[0009] Among them, 1 is fresh slurry tank, 2 is delivery pump, 3 is first slurry delivery pipeline, 4 is second slurry delivery pipeline, 5 is top tank, 6 is third slurry delivery pipeline, 7 is balance tank, 8 is reflux pipeline, 9 is reflux valve, 10 is exhaust pipeline. DETAILED DESCRIPTION
[0010] The utility model is further described below in connection with the drawings and examples, but not therefore limit the utility model.
[0011] As Figure 1 Indicated, a kind of balance tank devices for controlling desulfurization fresh slurry reflux of the utility model, including fresh slurry tank 1, delivery pump 2, top tank 5 and balance tank 7, fresh slurry tank 1 is connected with delivery pump 2, delivery pump 2 is connected with the one end of first slurry delivery pipeline 3, the other end of first slurry delivery pipeline 3 is connected with the one end of second slurry delivery pipeline 4 and third slurry delivery pipeline 6, the other end of second slurry delivery pipeline 4 is connected with top tank 5, third slurry delivery pipeline 6 is connected with the bottom of balance tank 7, the side lower part of balance tank 7 is connected with the one end of reflux pipeline 8, the other end of reflux pipeline 8 is connected with fresh slurry tank 1, reflux pipeline 8 is provided with reflux valve 9.
[0012] Further, the side upper portion of balance tank 7 is connected with the one end of exhaust pipeline 10, and the other end of exhaust pipeline 10 is connected with top tank 5.
[0013] Further, the first slurry delivery pipeline 3 is connected with the second slurry delivery pipeline 4 and the third slurry delivery pipeline 6 through a tee joint (not shown in the figure), respectively.
[0014] When the utility model is used, the fresh slurry for desulfurization is delivered by the delivery pump 2 through the first slurry delivery pipeline 3, and then divided into two paths, one path is connected to the top tank 5 through the second slurry delivery pipeline 4, and the other path is connected to the bottom end of the balance tank 7 through the third slurry delivery pipeline 6. The slurry enters the balance tank 7 from bottom to top, and then overflows from the side of the balance tank 7 into the reflux pipeline 8 after pressure relief, which can effectively reduce the pressure and impact on the reflux pipeline 8 and the reflux valve 9.
[0015] The opening size of the backflow valve 9 can control the amount of backflow slurry, thus controlling the amount of fresh slurry into the top tank 5, ensuring the stable operation of the desulfurization system. The slurry entering the balance tank 7 from the bottom can play a stirring role, preventing blockage.
[0016] The exhaust pipe 10 is connected to the top end of the top tank 5 from the side upper part of the balance tank 7, and can exhaust air from the exhaust pipe 10 when the liquid level of the backflow slurry in the balance tank 7 exceeds the interface of the backflow pipe 8, maintaining the pressure balance at the top of the liquid level, preventing excessive pressure from impacting the backflow pipe 8 and the backflow valve 9.
Claims
1. A surge tank arrangement for controlling the reflux of desulphurised fresh slurry, characterised in that: It comprises a fresh slurry tank (1), a delivery pump (2), a top tank (5) and a balance tank (7), the fresh slurry tank (1) is connected with the delivery pump (2), the delivery pump (2) is connected with one end of a first slurry delivery pipeline (3), the other end of the first slurry delivery pipeline (3) is connected with one end of a second slurry delivery pipeline (4) and a third slurry delivery pipeline (6), the other end of the second slurry delivery pipeline (4) is connected with the top tank (5), the third slurry delivery pipeline (6) is connected with the bottom of the balance tank (7), the lower side of the balance tank (7) is connected with one end of a backflow pipeline (8), the other end of the backflow pipeline (8) is connected with the fresh slurry tank (1), and the backflow pipeline (8) is provided with a backflow valve (9).
2. The surge tank apparatus for controlling the backflow of desulfurization fresh slurry according to claim 1, characterized by: The upper side of the balance tank (7) is connected with one end of an exhaust pipeline (10), and the other end of the exhaust pipeline (10) is connected with the top tank (5).
3. The surge tank apparatus for controlling the backflow of desulfurization fresh slurry according to claim 1, wherein: The first slurry delivery pipeline (3) is connected with the second slurry delivery pipeline (4) and the third slurry delivery pipeline (6) through a three-way joint respectively.