CN220961350U

CN220961350U - Slurry sulfite concentration measuring equipment and desulfurization system

Info

Publication number: CN220961350U
Application number: CN202322903724.4U
Authority: CN
Inventors: 占阜元; 邹炜; 黄文恩; 黄宗雷; 孙赵飞; 许诺; 柏源; 韦飞; 冯建春; 王春玲; 宣添星; 李二欣
Original assignee: Guoneng Fengcheng Power Generation Co ltd; Guodian Environmental Protection Research Institute Co Ltd
Current assignee: Guoneng Fengcheng Power Generation Co ltd; Guodian Environmental Protection Research Institute Co Ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-05-14
Anticipated expiration: 2033-10-27

Abstract

The utility model relates to the field of wet desulfurization, and discloses a slurry sulfite concentration measuring device and a desulfurization system, wherein the slurry sulfite concentration measuring device comprises a measuring barrel for accommodating slurry and a flushing device, and the device comprises: the grouting pipeline is provided with a slurry inlet and a slurry outlet at two ends, and the slurry outlet is communicated to the measuring barrel; the slurry pumping pipeline is communicated to the slurry inlet through a connecting flange, and a first valve is arranged on the slurry pumping pipeline; a water injection pipe connected to a portion of the grouting pipe between the slurry inlet and the slurry outlet to allow wash water to circulate through the water injection pipe and the grouting pipe in sequence to the measuring bucket. Can pour into the sparge water from the water injection pipeline, make the sparge water circulate to measuring in the bucket through the slip casting pipeline, not only can effectively wash the interior thick liquid of measuring the bucket, still can wash the interior remaining thick liquid of slip casting pipeline clean, avoid the slip casting pipeline to take place to block up, can set up first valve on the slip casting pipeline simultaneously, when rinsing, can close first valve, avoid the sparge water to flow backwards to the slip casting pipeline, cause the destruction.

Description

Slurry sulfite concentration measuring equipment and desulfurization system

Technical Field

The utility model relates to the technical field of wet desulfurization, in particular to slurry sulfite concentration measuring equipment and a desulfurization system.

Background

The limestone-gypsum desulfurization process is used as one of the most widely used desulfurization technologies, and its working principle is that limestone powder is added with water to prepare slurry, the slurry is pumped into an absorption tower as an absorbent to be fully contacted and mixed with flue gas, sulfur dioxide in the flue gas is oxidized with calcium carbonate in the slurry and air blown in from the lower part of the tower to generate calcium sulfate, and after the calcium sulfate reaches a certain saturation degree, the calcium sulfate is crystallized to form dihydrate gypsum. Concentrating and dehydrating gypsum slurry discharged from an absorption tower to make the water content less than 10%, then conveying the gypsum slurry to a gypsum storage bin for stacking by a conveyor, removing fog drops from desulfurized flue gas by a demister, heating by a heat exchanger, and discharging the flue gas into the atmosphere by a chimney.

In order to ensure desulfurization efficiency and quality of desulfurization byproduct gypsum, the sulfite content in the slurry needs to be monitored and measured, and at present, a slurry oxidation analyzer is used for sampling and analyzing the oxidation index of the slurry in an absorption tower, namely the concentration of sulfite in the residual product of slurry oxidation. However, when the sulfite concentration in the slurry is measured by some existing measuring devices, a sampling tube is usually stretched into a sampler, the oxidation index of the slurry is measured by using an analyzer, a flushing pipeline is also stretched into the sampler for flushing, however, the flushing pipeline can only flush the sampler and a detecting probe, but the sampling tube filled with the slurry cannot be flushed, and the residual slurry in the sampling tube is easy to be blocked after being precipitated, so that the subsequent normal use of the slurry oxidation analyzer is not facilitated.

Therefore, it is needed to solve the problem that the flushing pipeline in the prior art stretches into the sampler to flush the sampler and the probe, but cannot flush the sampling tube filled with the slurry, and the residual slurry in the sampling tube is easy to be blocked after being precipitated, which is not beneficial to the subsequent normal use of the slurry oxidation analyzer, and provide a corresponding solution.

Disclosure of utility model

The utility model aims to solve the problems that a flushing pipeline in the prior art stretches into a sampler to only flush the sampler and a detection probe, but a sampling tube filled with slurry cannot be flushed, and residual slurry in the sampling tube is easy to block after being precipitated, so that the subsequent normal use of a slurry oxidation analyzer is not facilitated.

In order to achieve the above object, an aspect of the present utility model provides a slurry sulfite concentration measuring apparatus comprising a measuring bucket containing a slurry and a flushing device for flushing the measuring bucket, wherein the flushing device comprises: the two ends of the grouting pipeline are provided with a slurry inlet and a slurry outlet, and the slurry outlet is communicated with the measuring barrel; the slurry outlet end of the slurry pumping pipeline is communicated with the slurry inlet through a connecting flange, and a first valve is arranged on the slurry pumping pipeline; a water injection pipe connected to a portion of the grouting pipe between the slurry inlet and the slurry outlet to allow wash water to circulate to the measuring bucket sequentially through the water injection pipe and the grouting pipe.

In some embodiments, a second valve is provided on the water injection line.

In some embodiments, the grouting pipe comprises a first pipe section extending between the water injection pipe and the slurry outlet, and a metering pump is arranged on the first pipe section.

In some embodiments, the flushing device further comprises a drain line connected to the bottom of the measuring tank, the drain line having a third valve disposed thereon.

In some embodiments, the device further comprises a slurry oxidation analyzer for detecting the concentration of sulfite in the slurry, wherein a probe is electrically connected to the bottom end of the slurry oxidation analyzer, and extends toward the measuring barrel and into the measuring barrel.

In some embodiments, a stirring assembly for stirring the slurry in the measuring barrel is connected to the bottom of the measuring barrel, the stirring assembly comprises a driving motor and a plurality of stirring blades arranged in the measuring barrel, and the stirring blades are connected with the driving motor through a stirring shaft.

In some embodiments, the slurry oxidation analyzer, the measuring tank, and the stirring assembly are all fixedly mounted within the cavity.

In some embodiments, the grouting pipeline penetrates through the side wall of the working cabinet and the water injection pipeline is arranged outside the cavity, and the flushing device further comprises a drainage pipeline communicated to the bottom of the measuring barrel and communicated to a drainage trench through the working cabinet.

In some embodiments, a control panel is mounted on the work bin and is electrically connected to the slurry oxidation analyzer to analyze the oxidation index of the slurry in the measurement tank.

The second aspect of the utility model provides a desulfurization system, which comprises an absorption tower and the slurry sulfite concentration measuring equipment, wherein the slurry inlet end of the slurry pumping pipeline is communicated with the absorption tower.

Through above-mentioned technical scheme, with water injection pipeline and slip casting pipeline intercommunication, when the thick liquid in the measurement bucket is washed to needs, can pour into the sparge water from the water injection pipeline, make the sparge water circulate to in the measurement bucket through the slip casting pipeline, not only can effectively wash the measurement bucket in the thick liquid, can also wash remaining thick liquid in the slip casting pipeline clean, avoid the slip casting pipeline to take place to block up, can set up first valve on the slip casting pipeline simultaneously, wherein, when washing, can close first valve, avoid the sparge water to flow backwards to the slip casting pipeline, cause the destruction.

Drawings

FIG. 1 is a schematic diagram of the structure of the disclosed slurry sulfite concentration measurement apparatus;

FIG. 2 is a schematic view of the flushing device of FIG. 1 (with the drain line omitted);

FIG. 3 is a schematic view showing the structure in which the cabinet door of the cabinet of the slurry sulfite concentration measuring apparatus of FIG. 1 is opened;

fig. 4 is a schematic view showing the structure of the cabinet door of the working cabinet of the slurry sulfite concentration measuring apparatus of fig. 1 closed.

Description of the reference numerals

1. Grouting pipeline of measuring barrel 2

3. First valve of liquid suction pipe 31

32. Connecting flange 4 water injection pipeline

41. Second valve 5 metering pump

6. Third valve of drain pipe 61

7. Slurry oxidation analyzer 8 probe

9. Stirring shaft of driving motor 10

11. Stirring vane 12 working cabinet

13. Control panel 14 display screen

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the embodiments described herein are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless otherwise indicated, the use of directional terms such as "upper, lower" and the like indicate a direction or a positional relationship based on that shown in the drawings, merely for convenience of description of the present design and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present design.

In the description of the present design, it should be noted that, unless explicitly specified and limited otherwise, the terms "provided with," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this design will be understood by those of ordinary skill in the art in a specific context.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In order to solve the problems that a flushing pipeline in the prior art stretches into a sampler and only can flush the sampler and a detection probe, but cannot flush a sampling tube filled with slurry, residual slurry in the sampling tube is easy to block after being precipitated, and the follow-up normal use of a slurry oxidation analyzer is not facilitated.

Referring to fig. 1, in one aspect, the present utility model provides a slurry sulfite concentration measurement apparatus.

Example 1

The slurry sulfite concentration measuring apparatus comprises a measuring bucket 1 containing slurry and a flushing device for flushing the measuring bucket 1, wherein the flushing device comprises: a grouting pipeline 2, wherein two ends of the grouting pipeline 2 are provided with a slurry inlet and a slurry outlet, and the slurry outlet is communicated with the measuring barrel 1; the slurry outlet end of the slurry pumping pipeline 3 is communicated with a slurry inlet through a connecting flange 32, and a first valve 31 is arranged on the slurry pumping pipeline 3; a water injection pipe 4, the water injection pipe 4 being connected to a portion of the grouting pipe 2 between the slurry inlet and the slurry outlet to allow flushing water to circulate to the measuring bucket 1 through the water injection pipe 4 and the grouting pipe 2 in sequence.

Specifically, when the slurry in the measuring barrel 1 needs to be washed, the water injection pipeline 4 is communicated with the grouting pipeline 2, and washing water can be injected from the water injection pipeline 4, so that the washing water can flow into the measuring barrel 1 through the grouting pipeline 2, not only can the slurry in the measuring barrel 1 be effectively washed, but also the residual slurry in the grouting pipeline 2 can be cleanly washed, the grouting pipeline 2 is prevented from being blocked, the slurry outlet section of the slurry pumping pipeline 3 is connected with the slurry inlet of the grouting pipeline 2 through the connecting flange 32, and a first valve 31 is arranged on the slurry pumping pipeline 3, and when the slurry is washed, the first valve 31 can be closed, so that the washing water can be prevented from flowing backwards to the slurry pumping pipeline 31 to cause damage. Meanwhile, the connecting flange 32 can be detached regularly, the slurry pumping pipeline 3 is detached and cleaned regularly, so that the smoothness of the whole pipeline of the slurry sulfite concentration measuring equipment is maintained, and the follow-up normal use of the equipment is facilitated.

Example two

This embodiment includes all of the contents of embodiment one. In this embodiment, as shown in fig. 1 and 2, the water injection pipe 4 may be provided with a second valve 41, and the second valve 41 may be used to control the on/off of the water injection pipe 4. When the slurry oxidation analyzer 7 (described later) is in operation to measure the sulfite concentration in the slurry, the second valve 41 can be closed to prevent the flushing water from flowing into the measuring barrel 1 to affect the analysis result; when flushing of slurry is required, the second valve 41 can be opened for flushing.

Example III

This embodiment includes all of the contents of embodiment one. And in this embodiment the grouting pipe 2 comprises a first pipe section extending between the water injection pipe 4 and the slurry outlet, on which first pipe section a metering pump 5 is arranged.

In particular, as shown with reference to fig. 1 to 3, a metering pump 5 may be provided on the first pipe section of the grouting pipe 2 between the water injection pipe 4 and the slurry outlet. When the slurry is required to be conveyed into the measuring barrel 1 for detection, the first valve 31 can be opened, the second valve 41 can be closed, the metering pump 4 can be started at the same time, the slurry in the absorption tower (described below) is quantitatively extracted, and the slurry is sequentially injected into the measuring barrel 1 through the liquid extracting pipeline 3 and the liquid injecting pipeline 2; after a certain amount of slurry has been drawn off, the metering pump 4 and the first valve 31 can be closed.

Example IV

This embodiment includes all of the contents of embodiment one. Also in this embodiment, as shown in fig. 1, the flushing device further includes a drain pipe 6 connected to the bottom of the measuring tank 1, and a third valve 61 is provided on the drain pipe 6.

Specifically, the drain pipe 6 may be provided to communicate with the bottom of the measuring tank 1, and a third valve 61 may be provided on the drain pipe 6. After measuring the concentration of sulfite in the slurry, the third valve 61 may be opened so that the slurry inside the measuring tank 1 may be discharged through the drain pipe 6.

Example five

This embodiment includes all of the contents of embodiment one. And in this embodiment, the device further comprises a slurry oxidation analyzer 7 for detecting the concentration of sulfite in slurry, wherein a probe 8 is electrically connected to the bottom end of the slurry oxidation analyzer 7, and the probe 8 extends towards the measuring barrel 1 and into the measuring barrel 1.

Specifically, as shown in fig. 1 and 3, the signal output end of the slurry oxidation analyzer 7 may be electrically connected with the probe 8, and the probe 8 may extend into the measuring barrel 1 to detect the concentration of sulfite in the slurry in the measuring barrel 1, so as to measure the oxidation index of the slurry.

Further, the bottom of measuring bucket 1 is connected with the stirring subassembly that is used for stirring the thick liquid in measuring bucket 1, and the stirring subassembly includes driving motor 9 and sets up a plurality of stirring vane 11 in measuring bucket 1, and stirring vane 11 passes through (mixing) shaft 10 and is connected with driving motor 9.

Specifically, as shown in fig. 1, the driving motor 9 can drive the stirring shaft 10 to rotate, so as to drive the stirring blade 11 connected with the stirring shaft 10 to rotate, and the stirring blade 11 can be arranged in the measuring barrel 1, so that slurry in the measuring barrel 1 can be stirred, slurry bubbles near the detecting probe 8 can be expelled or punctured, the effect of eliminating is achieved, excessive accumulation of slurry or bubbles near the detecting probe 8 is avoided, and the measuring accuracy of the detecting probe 8 is affected.

Further, the slurry oxidation analyzer comprises a working cabinet 12 with a cavity formed therein, and as shown in fig. 1 and 3, the slurry oxidation analyzer 7, the measuring tank 1 and the stirring assembly are fixedly installed in the cavity. It will be appreciated that the slurry oxidation analyzer 7, the measuring barrel 1 and the stirring assembly are fixedly arranged in the working cabinet 12, and the cabinet door of the working cabinet 12 can be closed, so that dust impurities and the like are prevented from entering the slurry, and the measuring result is prevented from being influenced.

Furthermore, as shown in fig. 1, the grouting pipe 2 penetrates through the side wall of the working cabinet 12, the water injection pipe 4 is arranged outside the cavity, and the flushing device further comprises a drainage pipe 6 communicated to the bottom of the measuring barrel 1 and communicated to the drainage ditch through the working cabinet 12.

Specifically, the grouting pipe 2 penetrates through the side wall of the working cabinet 12, so that the water injection pipe 4 communicated with the grouting pipe 2 can be arranged outside the cavity, and flushing water can be conveniently filled into the water injection pipe 4. And the outlet end of the drain pipe 6 communicating with the bottom of the measuring tank 1 may communicate to a drain trench, thereby discharging the slurry.

Example six

This embodiment includes all of the contents of the first and fifth embodiments. Also in this embodiment, a control panel 13 is mounted on the work cabinet 12, and the control panel 13 is electrically connected to the slurry oxidation analyzer 7 to analyze the oxidation index of the slurry in the measuring tank 1.

Specifically, as shown in fig. 4, the control panel 13 may be disposed outside the working cabinet 12, where a signal output end of the control panel 13 may be electrically connected with a signal input end of the slurry oxidation analyzer 7, so that the slurry oxidation analyzer 7 can be operated by operating the control panel 13, thereby detecting the concentration of sulfite in the slurry in the measuring barrel 1, and measuring the oxidation index of the slurry. And a display screen 14 may be connected to the control panel 13, and the slurry oxidation analyzer 7 may send the measured data to the display screen 14, and the display screen 14 displays the measured result.

Further, the first valve 31, the second valve 41 and the third valve 61 may be electromagnetic valves, and the signal output ends of the control panel 13 are electrically connected with the signal output ends, so that the on-off control of the first valve 31, the second valve 41 and the third valve 61 can be realized through operating the control panel 13, and the operation is convenient. Of course, the first valve 31, the second valve 41, and the third valve 61 are not limited to be provided as solenoid valves, and may be provided as ball valves, butterfly valves, or the like, as long as on-off control of the pipe is achieved.

The second aspect of the present utility model provides a desulfurization system comprising an absorption tower (not shown in the figure) to which the slurry inlet end of a slurry withdrawal pipe 3 is connected, and the above-described slurry sulfite concentration measurement apparatus, wherein the slurry in the absorption tower is conducted to a measurement tank 1 through the slurry withdrawal pipe 3, thereby measuring the sulfite concentration in the slurry.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. The technical solution of the utility model can be subjected to a plurality of simple variants within the scope of the technical idea of the utility model. Including the various specific features being combined in any suitable manner. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims

1. A slurry sulphite concentration measuring apparatus comprising a measuring vat (1) containing a slurry and a flushing device for flushing the measuring vat (1), wherein the flushing device comprises:

A grouting pipeline (2), wherein two ends of the grouting pipeline (2) are provided with a slurry inlet and a slurry outlet, and the slurry outlet is communicated with the measuring barrel (1);

The slurry outlet end of the slurry pumping pipeline (3) is communicated with the slurry inlet through a connecting flange (32), and a first valve (31) is arranged on the slurry pumping pipeline (3);

A water injection pipe (4), the water injection pipe (4) being connected to a portion of the grouting pipe (2) between the slurry inlet and the slurry outlet to allow flushing water to circulate through the water injection pipe (4) and the grouting pipe (2) to the measuring bucket (1) in sequence.

2. The slurry sulphite concentration measuring apparatus according to claim 1, wherein the water injection conduit (4) is provided with a second valve (41).

3. The slurry sulphite concentration measuring apparatus according to claim 1, wherein the grouting conduit (2) comprises a first pipe section extending between the water injection conduit (4) and the slurry outlet, the first pipe section being provided with a metering pump (5).

4. The slurry sulfite concentration measuring apparatus according to claim 1, characterized in that the flushing device further comprises a drain pipe (6) connected to the bottom of the measuring bucket (1), the drain pipe (6) being provided with a third valve (61).

5. The slurry sulfite concentration measurement apparatus according to claim 1, further comprising a slurry oxidation analyzer (7) for detecting a sulfite concentration in the slurry, wherein a probe (8) is electrically connected to a bottom end of the slurry oxidation analyzer (7), and the probe (8) extends toward the measuring barrel (1) and into the measuring barrel (1).

6. The slurry sulfite concentration measurement apparatus of claim 5, characterized in that a bottom of the measurement bucket (1) is connected with a stirring assembly for stirring the slurry in the measurement bucket (1), the stirring assembly comprising a driving motor (9) and a plurality of stirring blades (11) provided in the measurement bucket (1), the stirring blades (11) being connected with the driving motor (9) by a stirring shaft (10).

7. The slurry sulfite concentration measurement apparatus of claim 6, further comprising a work cabinet (12) having a cavity formed therein, wherein the slurry oxidation analyzer (7), the measurement tank (1) and the stirring assembly are fixedly installed in the cavity.

8. The slurry sulfite concentration measuring apparatus according to claim 7, wherein the grouting pipe (2) penetrates through a side wall of the working cabinet (12) and the water injection pipe (4) is disposed outside the cavity, and the flushing device further comprises a drainage pipe (6) communicated to a bottom of the measuring bucket (1) and communicated to a drainage trench through the working cabinet (12).

9. The slurry sulfite concentration measurement apparatus according to claim 7, characterized in that a control panel (13) is mounted on the work cabinet (12), the control panel (13) being electrically connected with the slurry oxidation analyzer (7) to analyze the oxidation index of the slurry in the measurement bucket (1).

10. A desulfurization system characterized by comprising an absorption tower and the slurry sulfite concentration measuring apparatus according to any one of claims 1 to 9, the slurry inlet end of the slurry extraction pipe (3) being communicated to the absorption tower.