White mud continuous desulfurization equipment
By using white mud as a desulfurizing agent, and designing parallel conveying branches and slurry supply branches, combined with a counter-current spray tower, the high energy consumption and discontinuous desulfurization problems of wet desulfurization devices were solved, achieving efficient and environmentally friendly continuous desulfurization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2026-03-17
AI Technical Summary
Existing wet desulfurization equipment suffers from high energy consumption, low desulfurization efficiency, and discontinuous desulfurization process, especially economic losses caused by insufficient limestone activity and pipeline failures.
Using white mud as a desulfurizing agent, continuous desulfurization and improved desulfurization efficiency are ensured by connecting parallel white mud conveying branches and slurry supply branches, combined with counter-current spray towers and multiple desulfurization towers. Highly active components such as CaCO3, Na2O, and MgO in white mud are utilized for efficient desulfurization.
It achieves a highly efficient and environmentally friendly continuous desulfurization process, reduces energy consumption, avoids downtime losses due to equipment failure, meets different desulfurization requirements, and improves desulfurization efficiency.
Smart Images
Figure CN223995783U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wet desulfurization equipment, specifically to a continuous desulfurization equipment for white mud. Background Technology
[0002] Currently, the existing wet desulfurization process is as follows: limestone is crushed and mixed with water through a wet grinding system to form a limestone slurry. Inside the absorption tower, SO2 in the flue gas reacts chemically with CaCO3 in the slurry and the injected oxidizing air to produce gypsum, thus removing SO2. The gypsum slurry discharged from the absorption tower is dehydrated by a vacuum dehydration system before being discharged. The clean flue gas after desulfurization is discharged through a demister to remove droplets before entering the chimney. The problems with this desulfurization device are: 1. It requires the operation of desulfurization wet grinding mills and other slurry-making equipment, increasing the power consumption of the desulfurization plant and raising costs; 2. The limestone has insufficient activity and excessive impurities, resulting in low desulfurization efficiency; 3. The single conveying pipeline, when encountering pump failures, leads to discontinuous desulfurization, causing economic losses. Therefore, there is an urgent need to propose a device that can achieve efficient, environmentally friendly, and continuous desulfurization. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model provides a continuous desulfurization device for white mud, aiming to solve the technical problems of efficient, environmentally friendly, and continuous desulfurization.
[0004] The technical solution of this utility model is: a continuous desulfurization equipment for white mud, comprising:
[0005] The white mud pool has a first white mud conveying branch and a second white mud conveying branch connected in parallel at its outlet. The first white mud conveying branch and the second white mud conveying branch merge into the white mud conveying main road. The white mud conveying main road is connected to the desulfurization slurry tank. The desulfurization slurry tank is connected to multiple corresponding desulfurization towers through multiple slurry supply main roads.
[0006] The first white mud conveying branch is equipped with a first white mud conveying pump and a first branch valve; the second white mud conveying branch is equipped with a second white mud conveying pump and a second branch valve; and the main white mud conveying line is equipped with a main white mud conveying valve.
[0007] On any main slurry conveying line, a main line stop valve A, a solenoid valve, and a main line stop valve B are connected in series.
[0008] Furthermore, a first slurry supply branch and a second slurry supply branch are connected in parallel on any slurry transport main line. A first slurry supply pump and a first slurry supply branch valve are installed in series on the first slurry supply branch, and a second slurry supply pump and a second slurry supply branch valve are installed in series on the second slurry supply branch.
[0009] Furthermore, a V-shaped feed inlet is provided at the entrance of the white mud pool, which can meet the continuous feeding of semi-solid white mud.
[0010] Furthermore, the first branch valve, the second branch valve, the main valve for conveying white mud, the first slurry supply branch valve, and the second slurry supply branch valve are all stop valves.
[0011] Furthermore, there are three desulfurization towers, namely Desulfurization Tower 1, Desulfurization Tower 3, and Desulfurization Tower 4. The desulfurization slurry is connected to Desulfurization Tower 1, Desulfurization Tower 3, and Desulfurization Tower 4 through the first slurry conveying main road, the second slurry conveying main road, and the third slurry conveying main road, respectively.
[0012] Furthermore, the capacities of desulfurization tower #1, desulfurization tower #3, and desulfurization tower #4 are 280t, 520t, and 520t, respectively.
[0013] Furthermore, an agitator is fixed to the inner wall of the white mud pool.
[0014] Furthermore, desulfurization towers #1, #3, and #4 are all counter-current spray towers.
[0015] Furthermore, three or four spray layers are installed on the upper part of desulfurization towers #1, #3, and #4, with demisters located above the spray layers.
[0016] The beneficial technical effects of this utility model are as follows: 1. The white mud contains approximately 85% CaCO3, exhibiting good desulfurization activity. It also contains desulfurization promoting components such as Na2O and MgO, enabling effective desulfurization and achieving positive and beneficial results. 2. The independently set first, second, and third slurry conveying main lines ensure continuous desulfurization capacity. Furthermore, the different capacities of the desulfurization towers meet the needs of varying desulfurization volumes, guaranteeing continuous desulfurization capacity while allowing for independent control of each line, resulting in energy efficiency and high performance. 3. The parallel white mud conveying branches prevent unexpected situations such as downtime. When one white mud conveying pump is damaged, unable to operate normally, or requires shutdown for maintenance, the other white mud conveying pump can be started, thus ensuring continuous and uninterrupted desulfurization throughout the entire production line. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the continuous desulfurization device for white mud according to this utility model;
[0018] Figure 2 yes Figure 1 Enlarged view of part A in the middle;
[0019] In the picture,
[0020] 1. White mud tank; 2. First white mud conveying branch; 3. Second white mud conveying branch; 4. Main white mud conveying route; 5. Desulfurization slurry tank; 6. Main white mud conveying valve; 8. V-shaped feed inlet; 9. Desulfurization tower #1; 10. Desulfurization tower #3; 11. Desulfurization tower #4; 12. Agitator;
[0021] 21. First white mud conveying pump; 22. First branch valve; 31. Second white mud conveying pump; 32. Second branch valve;
[0022] 71. Main line shut-off valve A; 72. Solenoid valve; 73. Main line shut-off valve B; 74. First slurry supply branch; 75. Second slurry supply branch; 741. First slurry supply pump; 742. First slurry supply branch valve; 751. Second slurry supply pump; 752. Second slurry supply branch valve. Detailed Implementation
[0023] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0024] See Figure 1-2 This specific embodiment discloses a continuous desulfurization device for white mud, comprising:
[0025] White mud tank 1, the outlet of white mud tank 1 is connected to a first white mud conveying branch 2 and a second white mud conveying branch 3 arranged in parallel. The first white mud conveying branch 2 and the second white mud conveying branch 3 merge into the white mud conveying main road 4. The white mud conveying main road 4 is connected to the desulfurization slurry tank 5. The desulfurization slurry tank 5 is connected to multiple corresponding desulfurization towers through multiple slurry supply main roads.
[0026] The first white mud conveying branch 2 is equipped with a first white mud conveying pump 21 and a first branch valve 22; the second white mud conveying branch 3 is equipped with a second white mud conveying pump 31 and a second branch valve 32; the white mud conveying main line 4 is equipped with a white mud conveying main valve 6.
[0027] Each main slurry conveying line is connected in series with a main line stop valve A71, a solenoid valve 72, and a main line stop valve B73.
[0028] In this specific embodiment, white mud, a waste product generated by the papermaking industry, replaces traditional limestone, solving pollution while serving as a desulfurization absorbent, thus saving energy and protecting the environment. The white mud contains approximately 85% CaCO3, exhibiting good desulfurization activity, and also contains desulfurization promoting components such as Na2O and MgO, which can effectively desulfurize and achieve positive and beneficial results.
[0029] In this specific embodiment, a main line stop valve A71, a solenoid valve 72, and a main line stop valve B73 are connected in series on any slurry conveying main line. The solenoid valve 72, together with the main line stop valves A71 and B73, controls the slurry flow rate on any slurry conveying main line, thereby precisely controlling the desulfurization speed in the desulfurization tower.
[0030] Furthermore, with the first white mud conveying branch 2 and the second white mud conveying branch 3 connected in parallel, workers can choose to work on either branch 2 or branch 3 individually, or simultaneously, to meet different production capacity requirements. More importantly, the parallel white mud conveying branches can prevent unexpected situations such as downtime. When one white mud conveying pump is damaged, cannot work normally, or needs to be shut down for maintenance, the other white mud conveying pump can be started, thus ensuring continuous and uninterrupted desulfurization of the entire production line.
[0031] More specifically, each main slurry conveying line is also equipped with a first slurry supply branch 74 and a second slurry supply branch 75 connected in parallel. The first slurry supply branch is equipped with a first slurry supply pump 741 and a first slurry supply branch valve 742 connected in series, and the second slurry supply branch 75 is equipped with a second slurry supply pump 751 and a second slurry supply branch valve 752 connected in series. The parallel connection of the first slurry supply branch 74 and the second slurry supply branch 75 operates on the same principle as the parallel connection of the first white mud conveying branch 2 and the second white mud conveying branch 3. The operators can choose to operate the white mud conveying branch individually or simultaneously according to the actual working conditions. The parallel connection of the first slurry supply branch and the second slurry supply branch ensures continuous desulfurization of the entire production line and avoids economic losses caused by unexpected shutdowns.
[0032] More specifically, a V-shaped feed inlet 8 is provided at the inlet of the white mud pool 1, which can meet the continuous feeding of semi-solid white mud.
[0033] More specifically, the first branch valve 22, the second branch valve 32, the main valve for conveying white mud 6, the first slurry supply branch valve 742, and the second slurry supply branch valve 752 are all stop valves.
[0034] More specifically, there are three desulfurization towers, namely Desulfurization Tower 9 (No. 1), Desulfurization Tower 10 (No. 3), and Desulfurization Tower 11 (No. 4). The desulfurization slurry is connected to Desulfurization Tower 9 (No. 1), Desulfurization Tower 10 (No. 3), and Desulfurization Tower 11 (No. 4) through the first slurry conveying main road 76, the second slurry conveying main road 77, and the third slurry conveying main road 78, respectively.
[0035] More specifically, the capacities of desulfurization tower 9 (No. 1), desulfurization tower 10 (No. 3), and desulfurization tower 11 (No. 4) are 280t, 520t, and 520t, respectively. The independently configured first slurry conveying main line 76, second slurry conveying main line 77, and third slurry conveying main line 78 ensure continuous desulfurization capacity. Furthermore, the different capacities of the desulfurization towers meet varying desulfurization requirements, guaranteeing continuous desulfurization capacity while allowing for independent control of each line, resulting in energy efficiency and high performance.
[0036] More specifically, an agitator 12 is fixedly connected to the inner wall of the white mud pool. By connecting the agitator 12 in the white mud pool, the white mud in the white mud pool can be fully agitated, avoiding the phenomenon of white mud solidification causing blockage.
[0037] More specifically, Desulfurization Tower 9 (No. 1), Desulfurization Tower 10 (No. 3), and Desulfurization Tower 11 (No. 4) are all counter-current spray towers. The counter-current spray towers allow for more thorough contact between the flue gas and the white mud slurry, resulting in better desulfurization.
[0038] More specifically, three or four spray layers (not shown in the figure) are installed on the upper part of desulfurization towers 1# (9), 3# (10), and 4# (1), with demisters located above the spray layers. When SO2 in the raw flue gas comes into contact with the sprayed white mud slurry in the desulfurization tower, it undergoes a chemical reaction to generate calcium sulfite, and other harmful substances in the flue gas, such as HCl and HF, are simultaneously removed, resulting in a significant desulfurization effect.
[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A white mud continuous desulphurization plant, characterized in that, The application relates to a white mud pool (1) which is connected with a first white mud conveying branch (2) and a second white mud conveying branch (3) in parallel at the outlet of the white mud pool (1), the first white mud conveying branch (2) and the second white mud conveying branch (3) are merged into a white mud conveying main line (4), the white mud conveying main line (4) is connected to a desulfurization slurry tank (5), the desulfurization slurry tank (5) is connected to a plurality of desulfurization towers through a plurality of slurry supply main lines. A first white mud conveying pump (21) and a first branch valve (22) are arranged on the first white mud conveying branch (2), a second white mud conveying pump (31) and a second branch valve (32) are arranged on the second white mud conveying branch (3), and a white mud conveying total valve (6) is arranged on the white mud conveying main line (4). A main line stop valve A (71), an electromagnetic valve (72) and a main line stop valve B (73) are sequentially and serially connected on any slurry conveying main line. A first slurry supply branch (74) and a second slurry supply branch (75) are arranged in parallel on any slurry conveying main line, a first slurry supply pump (741) and a first slurry supply branch valve (742) are serially arranged on the first slurry supply branch (74), and a second slurry supply pump (751) and a second slurry supply branch valve (752) are serially arranged on the second slurry supply branch (75).
2. A white mud continuous desulphurization plant according to claim 1, characterized in that, The first branch valve (22), the second branch valve (32), the white mud conveying total valve (6), the first slurry supply branch valve (742) and the second slurry supply branch valve (752) are all stop valves.
3. A white mud continuous desulphurization plant according to claim 2, characterized in that, The number of the desulfurization towers is three, and the desulfurization towers are respectively a 1# desulfurization tower (9), a 3# desulfurization tower (10) and a 4# desulfurization tower (11), and the desulfurization slurry is connected to the 1# desulfurization tower (9), the 3# desulfurization tower (10) and the 4# desulfurization tower (11) through a first slurry conveying main line (76), a second slurry conveying main line (77) and a third slurry conveying main line (78) respectively.
4. A white mud continuous desulphurization plant according to claim 1, characterized in that, The capacities of the 1# desulfurization tower (9), the 3# desulfurization tower (10) and the 4# desulfurization tower (11) are 280t, 520t and 520t respectively.
5. A white mud continuous desulphurization plant according to claim 4, characterized in that, A V-shaped feeding port (8) is arranged at the inlet of the white mud pool (1).
6. A white mud continuous desulphurization plant according to claim 1, characterized in that, A stirrer (12) is fixedly connected to the inner wall of the white mud pool.
7. A white mud continuous desulphurization plant according to claim 6, characterized in that, The 1# desulfurization tower (9), the 3# desulfurization tower (10) and the 4# desulfurization tower (11) are all countercurrent type spray towers.
8. A white mud continuous desulphurization plant according to claim 4, characterized in that, Three or four spray layers are arranged on the upper part of the 1# desulfurization tower (9), the 3# desulfurization tower (10) and the 4# desulfurization tower (11), and a demister is arranged above the spray layers.
9. A white mud continuous desulphurization plant according to claim 8, characterized in that,