CN204439491U - In lime (stone)-gypsum wet desulfurizer, serum density and PH measure integrated apparatus - Google Patents
In lime (stone)-gypsum wet desulfurizer, serum density and PH measure integrated apparatus Download PDFInfo
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- CN204439491U CN204439491U CN201420834523.1U CN201420834523U CN204439491U CN 204439491 U CN204439491 U CN 204439491U CN 201420834523 U CN201420834523 U CN 201420834523U CN 204439491 U CN204439491 U CN 204439491U
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 13
- 239000010440 gypsum Substances 0.000 title claims abstract description 13
- 235000008733 Citrus aurantifolia Nutrition 0.000 title abstract description 8
- 235000011941 Tilia x europaea Nutrition 0.000 title abstract description 8
- 239000004571 lime Substances 0.000 title abstract description 8
- 239000004575 stone Substances 0.000 title abstract description 8
- 210000002966 serum Anatomy 0.000 title 1
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 38
- 230000023556 desulfurization Effects 0.000 claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 238000011010 flushing procedure Methods 0.000 claims abstract description 27
- 239000000523 sample Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000001739 density measurement Methods 0.000 abstract description 2
- 238000001139 pH measurement Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
石灰（石）-石膏湿法脱硫塔内浆液密度及PH测量一体化装置，包括脱硫塔浆液池、固液分离器以及地坑，脱硫塔浆液池底端与固液分离器通过进料管道连接，固液分离器包括壳体，壳体底端设置有锥斗，锥斗底部设有排放管道连通地坑，排放管道上设置有排泥电动阀，壳体上端一侧设置有溢流管道连通地坑，进料管道上设置有管道式密度计，并设有冲洗水管道，所述固液分离器壳体顶端设置有PH探头，探头正下方设冲洗螺旋喷嘴，冲洗螺旋喷嘴连接冲洗水管路。能够同时在线监测脱硫塔内浆液密度及PH，避免了传统密度计及PH计探头因结垢、冲刷磨损严重，引起测量数据偏差较大、甚至数据失真及测量元件更换频繁的现象，确保脱硫系统长期高效运行，节约了投资运行费用。
Lime (stone)-gypsum wet desulfurization slurry density and pH measurement integrated device, including desulfurization tower slurry tank, solid-liquid separator and pit, the bottom of the desulfurization tower slurry tank and solid-liquid separator are connected through the feed pipeline , the solid-liquid separator includes a shell, the bottom of the shell is provided with a cone bucket, the bottom of the cone bucket is provided with a discharge pipe connected to the pit, the discharge pipe is provided with a mud discharge electric valve, and an overflow pipe is provided on the upper side of the shell to communicate with the pit. In the pit, the feed pipeline is equipped with a pipeline density meter and a flushing water pipeline. The top of the solid-liquid separator shell is equipped with a PH probe, and a flushing spiral nozzle is installed directly below the probe, and the flushing spiral nozzle is connected to the flushing water pipeline. . It can monitor the density and pH of the slurry in the desulfurization tower online at the same time, avoiding the phenomenon of large deviation of measurement data, even data distortion and frequent replacement of measurement components caused by fouling and serious erosion of the traditional density meter and pH meter probe, ensuring the desulfurization system. Long-term efficient operation saves investment and operation costs.
Description
技术领域 technical field
本实用新型涉及一种用于燃煤锅炉烟气脱硫塔内浆液密度及PH测量一体化装置，特别适用于石灰（石）-石膏湿法脱硫工艺。 The utility model relates to an integrated device for measuring slurry density and pH in a flue gas desulfurization tower of a coal-fired boiler, and is particularly suitable for a lime (stone)-gypsum wet desulfurization process.
背景技术 Background technique
国内80%以上的火电厂燃煤锅炉烟气采用石灰（石）-石膏湿法脱硫工艺，脱硫系统中循环的含有脱硫剂的溶液称为脱硫浆液，PH和密度是判断脱硫系统是否需要供浆和排浆的重要依据，在系统运行中担负着至关重要的作用。鉴于脱硫浆液成分复杂，浆液浓度高（含固量约10%～30%），同时含有CaSO4 ·2H2O、CaSO3 ·1/2H2O晶体以及未溶解的石灰（石）颗粒等。传统工艺中脱硫塔浆液密度计及PH计，普遍安装在脱硫循环泵、石膏排出泵出口管道上或脱硫塔本体上，密度计和pH探头冲刷、磨损、结垢较为严重，导致测量数据偏差较大甚至数据失真，造成测量元件更换频繁、脱硫系统不能长期稳定运行、投运费用增大等问题。 More than 80% of coal-fired boiler flue gas in thermal power plants in China adopts lime (stone)-gypsum wet desulfurization process. The solution containing desulfurization agent circulating in the desulfurization system is called desulfurization slurry. PH and density are used to judge whether the desulfurization system needs slurry supply. It plays an important role in the operation of the system and is an important basis for pulp discharge. In view of the complex composition of the desulfurization slurry, the slurry has a high concentration (solid content is about 10% to 30%), and contains CaSO 4 2H 2 O, CaSO 3 1/2H 2 O crystals and undissolved lime (stone) particles. In the traditional process, the slurry density meter and pH meter of the desulfurization tower are generally installed on the outlet pipe of the desulfurization circulating pump and the gypsum discharge pump or on the main body of the desulfurization tower. The erosion, wear and fouling of the density meter and pH probe are relatively serious, resulting in large deviations in measurement data. Large or even data distortion, resulting in frequent replacement of measuring components, long-term stable operation of the desulfurization system, and increased commissioning costs.
传统工艺中，安装在脱硫循环泵或石膏排出泵出口管道上的密度计和PH探头，长期承受高含固量、高流速浆液的冲刷，磨损严重，更换频繁；安装在脱硫塔本体上的密度计和PH探头，由于冲洗条件受到限制，测量元件结垢、堵塞严重，造成测量数据偏差较大甚至数据失真，系统不能长期连续稳定运行。 In the traditional process, the density meter and pH probe installed on the outlet pipeline of the desulfurization circulating pump or the gypsum discharge pump have been subjected to the erosion of the high-solid content and high-flow rate slurry for a long time, with serious wear and tear and frequent replacement; the density meter installed on the desulfurization tower body Meters and pH probes, due to the limited flushing conditions, fouling and serious clogging of the measuring elements, resulting in large deviations in measurement data and even data distortion, the system cannot run continuously and stably for a long time.
发明内容 Contents of the invention
本实用新型针对现有技术的不足，提供了一种设备简单、操作维护方便、运行稳定可靠的石灰（石）-石膏湿法脱硫塔内浆液密度及PH测量一体化装置。 Aiming at the deficiencies of the prior art, the utility model provides an integrated device for measuring slurry density and pH in a lime (stone)-gypsum wet desulfurization tower with simple equipment, convenient operation and maintenance, and stable and reliable operation.
为实现本实用新型目的，提供了以下技术方案：石灰（石）-石膏湿法脱硫塔内浆液密度及PH测量一体化装置，包括脱硫塔浆液池、固液分离器以及地坑，脱硫塔浆液池底端与固液分离器通过进料管道连接，固液分离器包括壳体，壳体底端设置有锥斗，锥斗底部设有排放管道连通地坑，排放管道上设置有排泥电动阀，壳体上端一侧设置有溢流管道连通地坑，其特征在于进料管道上设置有管道式密度计，并设有冲洗水管道，所述固液分离器壳体顶端设置有PH探头，探头正下方设冲洗螺旋喷嘴，冲洗螺旋喷嘴连接冲洗水管路。 In order to achieve the purpose of this utility model, the following technical solutions are provided: an integrated device for measuring slurry density and pH in the lime (stone)-gypsum wet desulfurization tower, including a desulfurization tower slurry pool, a solid-liquid separator and a pit, and a desulfurization tower slurry The bottom of the tank is connected to the solid-liquid separator through the feed pipe. The solid-liquid separator includes a shell. The bottom of the shell is provided with a cone bucket. Valve, the upper side of the shell is provided with an overflow pipe to communicate with the pit, which is characterized in that the feed pipe is provided with a pipe-type density meter and a flushing water pipe, and the top of the solid-liquid separator shell is provided with a PH probe , There is a flushing spiral nozzle directly under the probe, and the flushing spiral nozzle is connected to the flushing water pipeline.
作为优选，进料管道上设置有脱硫浆液电动调节阀。 As a preference, an electric regulating valve for desulfurization slurry is provided on the feed pipeline.
作为优选，冲洗水管道设置电动隔膜阀。 Preferably, the flushing water pipeline is provided with an electric diaphragm valve.
作为优选，冲洗水管路设置控制电动阀。 Preferably, the flushing water pipeline is provided with a control electric valve.
本实用新型的有益效果：本实用新型解决了传统密度计及PH计探头因结垢、冲刷磨损严重，引起测量数据偏差较大、甚至数据失真及测量元件更换频繁的现象，确保脱硫系统长期高效运行，节约了投资运行费用。 Beneficial effects of the utility model: the utility model solves the phenomenon that the probes of the traditional density meter and the pH meter are seriously fouled due to fouling and scouring, which cause large deviations in measurement data, even data distortion and frequent replacement of measurement elements, ensuring long-term high efficiency of the desulfurization system operation, saving investment and operating costs.
附图说明 Description of drawings
图1为本实用新型的结构示意图。 Fig. 1 is the structural representation of the utility model.
具体实施方式 Detailed ways
石灰（石）-石膏湿法脱硫塔内浆液密度及PH测量一体化装置，包括脱硫塔浆液池001、固液分离器002以及地坑003，脱硫塔浆液池001底端与固液分离器002通过进料管道004连接，固液分离器002包括壳体021，壳体021底端设置有锥斗023，锥斗023底部设有排放管道024连通地坑003，排放管道024上设置有排泥电动阀025，壳体021上端一侧设置有溢流管道026连通地坑003，进料管道004上设置有管道式密度计005，并设有冲洗水管道006，所述固液分离器002壳体021顶端设置有PH探头027，探头027正下方设冲洗螺旋喷嘴028，冲洗螺旋喷嘴028连接冲洗水管路029。进料管道004上设置有脱硫浆液电动调节阀041。冲洗水管道006设置电动隔膜阀061。冲洗水管路029设置控制电动阀291。 Lime (stone)-gypsum wet desulfurization tower internal slurry density and pH measurement integrated device, including desulfurization tower slurry pool 001, solid-liquid separator 002 and pit 003, the bottom of desulfurization tower slurry pool 001 and solid-liquid separator 002 Connected through the feed pipe 004, the solid-liquid separator 002 includes a shell 021, the bottom of the shell 021 is provided with a cone 023, the bottom of the cone 023 is provided with a discharge pipe 024 connected to the pit 003, and the discharge pipe 024 is provided with a sludge discharge An electric valve 025, an overflow pipe 026 connected to the pit 003 is provided on the upper side of the housing 021, a pipe-type density meter 005 is provided on the feed pipe 004, and a flushing water pipe 006 is provided. The shell of the solid-liquid separator 002 A pH probe 027 is arranged on the top of the body 021, and a flushing spiral nozzle 028 is arranged directly below the probe 027, and the flushing spiral nozzle 028 is connected to a flushing water pipeline 029. The feed pipeline 004 is provided with an electric regulating valve 041 for desulfurization slurry. The flushing water pipeline 006 is provided with an electric diaphragm valve 061. The flushing water pipeline 029 is provided with a control electric valve 291 .
如图1所示，浆液从脱硫塔浆液池001底部重力自流，经电动调节阀041，由下至上进入管道式密度计005，测量浆液密度。关闭电动调节阀041，打开电动隔膜阀061，可冲洗管道式密度计005及进料管道004。管道式密度计005上部出水进入固液分离器002，从底部中心位置均匀布液，进行固液分离，泥渣通过排泥电动阀025至地坑003，上清液从固液分离器002上部经溢流管026至地坑003。固液分离器002上部安装PH探头027与清液接触，测量浆液的PH，探头底部设螺旋喷嘴028，打开电动阀291可对探头进行彻底冲洗。 As shown in Figure 1, the slurry flows by gravity from the bottom of the desulfurization tower slurry pool 001, passes through the electric control valve 041, and enters the pipeline density meter 005 from bottom to top to measure the slurry density. Close the electric regulating valve 041, open the electric diaphragm valve 061, and the pipeline type density meter 005 and the feed pipeline 004 can be flushed. The water from the upper part of the pipeline type density meter 005 enters the solid-liquid separator 002, and the liquid is evenly distributed from the center of the bottom for solid-liquid separation. Through the overflow pipe 026 to the pit 003. A pH probe 027 is installed on the upper part of the solid-liquid separator 002 to contact the clear liquid to measure the pH of the slurry. A spiral nozzle 028 is installed at the bottom of the probe, and the electric valve 291 is opened to thoroughly rinse the probe.
本实用新型工作过程中，打开固液分离器002底部排泥电动阀025可定期排泥。系统停运时，关闭脱硫浆液电动调节阀041，打开排泥电动阀025，将分离器排空，打开冲洗水电动隔膜阀061和控制电动阀291，对管道式密度计005、PH探头027、固液分离器002及附属管道进行冲洗，冲洗废水落入地坑003，通过地坑泵返回吸收塔浆液池或制浆系统循环利用。 During the working process of the utility model, the mud discharge electric valve 025 at the bottom of the solid-liquid separator 002 can be opened to regularly discharge mud. When the system is out of service, close the desulfurization slurry electric control valve 041, open the mud discharge electric valve 025, empty the separator, open the flushing water electric diaphragm valve 061 and control electric valve 291, and control the pipeline density meter 005, PH probe 027, The solid-liquid separator 002 and its affiliated pipelines are flushed, and the flushing wastewater falls into the pit 003, and is returned to the slurry tank of the absorption tower or the pulping system for recycling through the pit pump.
本实用新型采用管道式密度计，管内浆液流速通过电动调节阀调节，大大减轻了测量元件的磨损；密度计配备冲洗水装置，定时冲洗，较好地解决了结垢问题。采用固液分离器对浆液进行预处理，针对脱硫浆液特性，水力停留时间为4～6min，较好的实现固液分离。固液分离器下部锥斗与水平方向夹角为45°～60°，排泥效果好。PH探头接触的是固液分离器上部清液，液体流速缓慢， PH探头结垢、冲刷及磨损大大减缓，探头正下方配有冲洗螺旋喷嘴，可对探头彻底冲洗。 The utility model adopts a pipeline type density meter, and the flow rate of the slurry in the pipe is adjusted by an electric regulating valve, which greatly reduces the wear of the measuring element; the density meter is equipped with a flushing water device, which can be flushed regularly, which better solves the scaling problem. A solid-liquid separator is used to pretreat the slurry. According to the characteristics of the desulfurized slurry, the hydraulic retention time is 4 to 6 minutes, and the solid-liquid separation is better achieved. The angle between the cone bucket in the lower part of the solid-liquid separator and the horizontal direction is 45°~60°, and the mud discharge effect is good. The pH probe is in contact with the upper clear liquid of the solid-liquid separator. The liquid flow rate is slow, and the scaling, erosion and wear of the pH probe are greatly slowed down. There is a flushing spiral nozzle directly below the probe, which can thoroughly rinse the probe.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614281A (en) * | 2014-12-25 | 2015-05-13 | 江苏一环集团有限公司 | Integrated device for measuring slurry density and pH(potential of hydrogen) in lime(stone)-plaster wet desulphurization tower |
| CN106706739A (en) * | 2017-03-01 | 2017-05-24 | 武汉立为工程技术有限公司 | Absorption tower pH and density measuring device for preventing blocking with rinsing water |
| CN107024410A (en) * | 2017-06-16 | 2017-08-08 | 聊城信源集团有限公司 | A kind of measuring system of desulfurization carbide slag slurry parameter |
| CN109200763A (en) * | 2018-09-30 | 2019-01-15 | 北京国电龙源环保工程有限公司 | A kind of flue gas desulphurization system loop slurry detection system |
| CN114441376A (en) * | 2020-11-06 | 2022-05-06 | 杭州元朔环保科技有限公司 | Desulfurized gypsum slurry density and pH value combined measuring device |
-
2014
- 2014-12-25 CN CN201420834523.1U patent/CN204439491U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614281A (en) * | 2014-12-25 | 2015-05-13 | 江苏一环集团有限公司 | Integrated device for measuring slurry density and pH(potential of hydrogen) in lime(stone)-plaster wet desulphurization tower |
| CN106706739A (en) * | 2017-03-01 | 2017-05-24 | 武汉立为工程技术有限公司 | Absorption tower pH and density measuring device for preventing blocking with rinsing water |
| CN107024410A (en) * | 2017-06-16 | 2017-08-08 | 聊城信源集团有限公司 | A kind of measuring system of desulfurization carbide slag slurry parameter |
| CN109200763A (en) * | 2018-09-30 | 2019-01-15 | 北京国电龙源环保工程有限公司 | A kind of flue gas desulphurization system loop slurry detection system |
| CN109200763B (en) * | 2018-09-30 | 2024-06-21 | 国能龙源环保有限公司 | Circulating slurry detection system of flue gas desulfurization system |
| CN114441376A (en) * | 2020-11-06 | 2022-05-06 | 杭州元朔环保科技有限公司 | Desulfurized gypsum slurry density and pH value combined measuring device |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liang Lei Inventor after: Wang Jungang Inventor after: Jiang Xinqiang Inventor after: Gao Pan Inventor after: Zhang Yu Inventor after: Zou Fei Inventor before: Liang Lei Inventor before: Jiang Xinqiang Inventor before: Gao Pan Inventor before: Zhang Yu Inventor before: Zou Fei |
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| COR | Change of bibliographic data | ||
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Granted publication date: 20150701 |
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| CX01 | Expiry of patent term |