Gypsum discharging system
By using the inverter pump interlocking with the density meter in the gypsum discharge system, the outer displacement of gypsum is accurately controlled, combined with the self-operated regulating valve on the gypsum return pipeline to adjust the inlet pressure of the gypsum cyclone, the problem of inaccurate control of the traditional gypsum discharge pump is solved, and the gypsum separation effect and system stability are improved.
Patent Information
- Application Number
- CN202421408626.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The traditional wet desulfurization gypsum discharge pump adopts power frequency control, which leads to inaccurate control of the slurry density of the absorption tower and cannot guarantee the inlet pressure of the gypsum cyclone, which in turn affects the gypsum separation effect.
A frequency converter pump is used as a gypsum discharge pump and interlocked with the density meter on the absorption tower. The opening of the frequency converter pump is controlled according to the actual measured value of the density meter, and the outer displacement of the gypsum is accurately controlled to maintain the stability of the slurry density of the absorption tower. At the same time, the self-operated regulating valve is installed in the gypsum reflux pipeline to adjust the inlet pressure of the gypsum cyclone to ensure the separation effect of the gypsum cyclone.
The precise control of the outer displacement of gypsum is achieved, the stability of the slurry density of the absorption tower is maintained, the separation effect of the gypsum cyclone is improved, and the subsequent operating pressure of the vacuum belt conveyor is reduced.
Smart Images
Figure CN222788928U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of desulfurization, in particular to a gypsum discharge system. Background Art
[0002] The conventional wet flue gas desulfurization gypsum discharge pump adopts power frequency control, and discharges gypsum to the cyclone in large quantities according to the density of the absorber slurry. The density control of the absorber is not precise enough. When the liquid level of the absorber changes, the inlet pressure of the gypsum cyclone cannot be guaranteed, and the gypsum separation effect is poor. Utility Model Content
[0003] The utility model aims to provide a gypsum discharge system to solve the problems existing in the prior art.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A gypsum discharge system comprises a gypsum discharge pump, a gypsum discharge pipeline and a gypsum cyclone in a gypsum cyclone station, wherein the slurry in an absorption tower is connected to the gypsum cyclone in the gypsum cyclone station through the gypsum discharge pipeline, and the gypsum discharge pump is arranged on the gypsum discharge pipeline, characterized in that: the gypsum discharge pump is a variable frequency pump, and the variable frequency pump is interlocked with a density meter arranged on the absorption tower, and the opening of the variable frequency pump is controlled according to the actual measured value of the density meter, the gypsum discharge pipeline is connected to the absorption tower through a gypsum return pipeline, and a self-operated regulating valve is arranged on the gypsum return pipeline.
[0006] The gypsum cyclone station has multiple groups of gypsum cyclones.
[0007] The gypsum discharge pipeline is connected to the emptying pipeline, and the emptying pipeline is provided with an emptying valve.
[0008] The gypsum discharge pipeline is provided with a pressure gauge, which is used to measure the outlet pressure of the gypsum discharge pump.
[0009] The gypsum discharge pipeline is connected to a flushing water pipeline, and a flushing water valve is arranged on the flushing water pipeline.
[0010] The gypsum discharge pipeline is provided with a control valve.
[0011] The gypsum discharge pump, density meter, self-operated regulating valve, drain valve, flushing water valve and control valve are all connected with the controller.
[0012] The advantages of the utility model are:
[0013] The utility model adopts a variable frequency pump for discharging gypsum, which is interlocked with a density meter to accurately control the gypsum discharge volume and maintain the stability of the slurry density in the absorption tower; the gypsum slurry is discharged to the gypsum cyclone through the gypsum discharge pump and circulated back to the absorption tower; a self-operated regulating valve is provided in the gypsum return pipeline to adjust the inlet pressure of the gypsum cyclone, thereby ensuring the separation effect of the gypsum cyclone and reducing the operating pressure of the subsequent vacuum belt conveyor. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] Figure numerals: 1. gypsum discharge pump; 2. gypsum discharge pipe; 201. first gypsum discharge pipe; 202. second gypsum discharge pipe; 203. third gypsum discharge pipe; 204. fourth gypsum discharge pipe; 3. gypsum reflux pipe; 4. self-operated regulating valve; 5. drain pipe; 6. drain valve; 7. pressure gauge; 8. flushing water pipe; 9. flushing water valve; 10. control valve. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] like Figure 1 As shown, a gypsum discharge system includes a gypsum discharge pump 1, a gypsum discharge pipeline 2 and a gypsum cyclone in a gypsum cyclone station. The slurry in the absorption tower is connected to the gypsum cyclone in the gypsum cyclone station through the gypsum discharge pipeline 2. The gypsum discharge pump 1 is arranged on the gypsum discharge pipeline 2, and is characterized in that: the gypsum discharge pump 1 is a variable frequency pump, and the variable frequency pump is interlocked with a density meter arranged on the absorption tower. According to the measured value of the density meter, the opening of the variable frequency pump is controlled, thereby accurately controlling the gypsum discharge amount and maintaining the stability of the slurry density in the absorption tower. The gypsum discharge pipeline 2 is connected to the absorption tower through a gypsum reflux pipeline 3, and a self-operated regulating valve 4 is arranged on the gypsum reflux pipeline 3.
[0019] The gypsum cyclone station has multiple groups of gypsum cyclones.
[0020] The gypsum discharge pipe 2 is connected to an emptying pipe 5 , and an emptying valve 6 is provided on the emptying pipe 5 .
[0021] The gypsum discharge pipeline 2 is provided with a pressure gauge 7, and the pressure gauge 7 is used to measure the outlet pressure of the gypsum discharge pump 1.
[0022] The gypsum discharge pipe 2 is connected to a flushing water pipe 8 , and a flushing water valve 9 is provided on the flushing water pipe 8 .
[0023] The gypsum discharge pipeline 2 is provided with a control valve 10 .
[0024] The gypsum discharge pump 1, the density meter, the self-operated regulating valve 4, the drain valve 6, the flushing water valve 9 and the control valve 10 are all connected to the controller.
[0025] The gypsum discharge pipeline 2 includes a first gypsum discharge pipeline 201 and a second gypsum discharge pipeline 202. One end of the first gypsum discharge pipeline 201 and the second gypsum discharge pipeline 202 are respectively connected to the liquid outlet on the absorption tower, and the other ends of the first gypsum discharge pipeline 201 and the second gypsum discharge pipeline 202 are commonly connected to the third gypsum discharge pipeline 203. The third gypsum discharge pipeline 203 is connected to one end of the fourth gypsum discharge pipeline 204, and the other end of the fourth gypsum discharge pipeline 204 is connected to the gypsum cyclone in the gypsum cyclone station.
[0026] The first gypsum discharge pipeline 201 and the second gypsum discharge pipeline 202 are both provided with a gypsum discharge pump 1 and a pressure gauge 7 .
[0027] The first gypsum discharge pipe 201 and the second gypsum discharge pipe 202 are both connected to the exhaust pipe 5 .
[0028] The first gypsum discharge pipe 201 , the second gypsum discharge pipe 202 and the fourth gypsum discharge pipe 204 are all connected to the flushing water pipe 8 .
[0029] The third gypsum discharge pipeline 203 and the fourth gypsum discharge pipeline 204 are both provided with control valves 10 .
[0030] The gypsum return pipe 3 is connected to the fourth gypsum discharge pipe 204 .
[0031] Working principle: When the value measured by the density meter is greater than 1150kg / m 3 When the gypsum discharge pump is turned on, the signal is transmitted to the controller to control the operation of the gypsum discharge pump, thereby accurately controlling the gypsum discharge volume and maintaining the stability of the slurry density in the absorption tower; the self-operated regulating valve installed in the gypsum return pipeline can adjust the inlet pressure of the gypsum cyclone to ensure the separation effect of the gypsum cyclone and reduce the operating pressure of the subsequent vacuum belt conveyor.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A gypsum discharge system, comprising a gypsum discharge pump (1), a gypsum discharge pipeline (2) and a gypsum cyclone in a gypsum cyclone station, wherein the slurry in the absorption tower is connected to the gypsum cyclone in the gypsum cyclone station through the gypsum discharge pipeline (2), and the gypsum discharge pump (1) is arranged on the gypsum discharge pipeline (2), characterized in that: The gypsum discharge pump (1) is a variable frequency pump, and the variable frequency pump is interlocked with a density meter arranged on the absorption tower. The opening of the variable frequency pump is controlled according to the measured value of the density meter. The gypsum discharge pipeline (2) is connected to the absorption tower through a gypsum return pipeline (3), and a self-operated regulating valve (4) is arranged on the gypsum return pipeline (3).
2. The gypsum discharge system according to claim 1, characterized in that: The gypsum cyclone station has multiple groups of gypsum cyclones.
3. The gypsum discharge system according to claim 1, characterized in that: The gypsum discharge pipe (2) is connected to an emptying pipe (5), and an emptying valve (6) is provided on the emptying pipe (5).
4. The gypsum discharge system according to claim 1, characterized in that: The gypsum discharge pipeline (2) is provided with a pressure gauge (7), and the pressure gauge (7) is used to measure the outlet pressure of the gypsum discharge pump (1).
5. The gypsum discharge system according to claim 1, characterized in that: The gypsum discharge pipe (2) is connected to a flushing water pipe (8), and a flushing water valve (9) is provided on the flushing water pipe (8).
6. The gypsum discharge system according to claim 1, characterized in that: The gypsum discharge pipeline (2) is provided with a control valve (10).
7. The gypsum discharge system according to claim 1, characterized in that: The gypsum discharge pump (1), the density meter, the self-operated regulating valve (4), the drain valve (6), the flushing water valve (9) and the control valve (10) are all connected to the controller.