CN104677780A - Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant - Google Patents
Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant Download PDFInfo
- Publication number
- CN104677780A CN104677780A CN201510125054.5A CN201510125054A CN104677780A CN 104677780 A CN104677780 A CN 104677780A CN 201510125054 A CN201510125054 A CN 201510125054A CN 104677780 A CN104677780 A CN 104677780A
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- desulfurization absorption
- power plant
- flue gas
- gas desulfurization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a density measurement system for slurry in a wet flue gas desulfurization absorption tower of a thermal power plant. The density measurement system comprises a controller and at least one group of measurement mechanisms, wherein each measurement mechanism comprises two pressure transmitters and two sampling tubes; each two pressure transmitters are arranged outside the desulfurization absorption tower at intervals along the vertical direction, and an included angle between a tube connecting hole of each pressure transmitter and the desulfurization absorption tower is 30-35 degrees; one end of each sampling tube is connected into the desulfurization absorption tower, and the other end of each sampling tube is connected with the tube connecting hole of the corresponding pressure transmitter; a manual valve is arranged on each sampling tube. According to the density measurement system, by virtue of a differential pressure type measurement manner, the problem that a pipeline is worn during the measurement of a mass flow meter is solved, the maintenance cost is greatly saved, and the real-time density of slurry in the desulfurization absorption tower can be further accurately and stably displayed; furthermore, the included angle between the tube connecting hole of each pressure transmitter and the desulfurization absorption tower is 30-35 degrees, so that the problem of slurry deposition is solved, and the corrosive damage caused by slurry to the pressure transmitters is avoided.
Description
Technical field
The present invention relates to environment protection desulphurization technical field in fuel-burning power plant, be specifically related to provide serum density measuring system in the wet flue gas desulfurization absorption tower of a kind of fuel-burning power plant.
Background technology
In the wet method fume desulfurizing system of fuel-burning power plant, the lime stone slurry density relationship of desulfuration absorbing tower to desulfuration efficiency, so real―time precision measurment must be carried out to absorption tower sodalime stone serum density.But due to the technological process of wet desulfurization system comparatively complicated, the lime stone slurry density in desulfuration absorbing tower is not easily measured.Be measure lime stone slurry density with mass flowmeter in the middle of existing, after namely flowing through the mass rate of the fluid of flowtube by measurement, then obtained the density of slurries by density qualities cubature formula.But owing to containing sulfate radical and inferior sulfate radical in its slurries after sweetening process lime stone slurry and smoke contacts, in faintly acid, pH value is generally at 5.2-6.2; And containing the chlorion of 2% and fluorine ion in slurries, all can acid corrosion be accelerated; In lime stone slurry, solids content is higher simultaneously, reaches 20%-30%; Containing a large amount of gypsum crystallizations in slurries after desulfurization, abrasiveness is comparatively strong, desulphurization system serosity density measurement instrument will be produced to the harm such as deposition, fouling of burn into abrasion, suspended solids.Long-time running can produce measuring error, has a strong impact on desulphurization system and runs.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of measurement desulfuration absorbing tower slurries real-time density that can be accurate, stable, substantially reduce the number densitometer maintenance, serum density measuring system in the fuel-burning power plant wet flue gas desulfurization absorption tower preventing measuring error.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
Serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant, comprise controller and at least one group of measuring mechanism, described measuring mechanism comprises two and is vertically disposed on pressure unit outside desulfuration absorbing tower and two stopple coupons, and the adapter mouth of every platform pressure unit and the angle of desulfuration absorbing tower are 30 ~ 35 °; One end access desulfuration absorbing tower of every root stopple coupon is interior, the other end connects with the adapter mouth of corresponding pressure unit, and every root stopple coupon is equipped with hand valve; Often two pressure units organized in measuring mechanism are all connected with the input end of the same computing unit in controller.
Such scheme is preferred, and the height bottom described pressure unit distance desulfuration absorbing tower can be 1.0 ~ 2.0m.The installation site of pressure unit is extremely important, is too lowly easily affected by the gypsum slurries of natural sediment, can not Measurement accuracy, and too high then repair and maintenance is inconvenient.
In order to prevent the measuring error that exists because of the stirring flowing of stirrer, and make measurement more accurately, described measuring mechanism can be two groups, on the desulfuration absorbing tower that these two groups of measuring mechanisms are arranged in symmetrical mode.
Such scheme is preferred, and the length that described stopple coupon stretches into desulfuration absorbing tower can be 0.2 ~ 0.3m.Stopple coupon in the horizontal direction can not be too far away apart from stirrer, more can not between two stirrers Ta Bi central area, deposit slurries to avoid central angle.
In order to observe the density value of slurries by real-time live, such scheme is preferred, and can also comprise the display for showing serum density value, this display is connected with the output terminal of controller.
In order to realize remote monitoring, such scheme is preferred, can also comprise wireless communication module, and the output terminal of controller is connected with external control center by this wireless communication module.
Compared with prior art, the present invention adopts differential pressure type to measure, and solves mass flow meter measurement and the pipe wear problem produced, saves maintenance cost in a large number, also can accurately, stable display absorption tower slurries real-time density; And simple, easy to maintenance, the unpowered equipment of its layout, calculate gypsum slurries density by measuring differential pressure, algorithm is simple, and overall investment reduces; In addition, the adapter mouth of pressure unit and the angle of desulfuration absorbing tower are 30 ~ 35 °, and solve the problem of slurry deposition, measuring accuracy is higher, and relieve the corrosion harmfulness of slurries to pressure unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present invention.
Number in the figure is: 1, desulfuration absorbing tower; 2, pressure unit; 3, stopple coupon; 4, hand valve.
Embodiment
As shown in Figure 1, for the structural representation of serum density measuring system in the wet flue gas desulfurization absorption tower of a kind of fuel-burning power plant of the present invention, the present invention includes controller and two groups of measuring mechanisms, on the desulfuration absorbing tower 1 that these two groups of measuring mechanisms are arranged in symmetrical mode.Adopt differential pressure measurement method, directly measure desulfuration absorbing tower 1 serum density.
Described measuring mechanism comprises two and is vertically disposed on pressure unit 2 outside desulfuration absorbing tower 1 and two stopple coupons 3; One end access desulfuration absorbing tower 1 of every root stopple coupon 3 is interior, the other end connects with the adapter mouth of corresponding pressure unit 2, and every root stopple coupon 3 is equipped with hand valve 4; Often two pressure units 2 organized in measuring mechanism are all connected with the input end of the same computing unit in controller.As shown in Figure 1, tower wall perforate on the left of desulfuration absorbing tower 1, from 1 meter and the 2 meters of perforates respectively bottom it of desulfuration absorbing tower 1 distance from bottom, installs left upper portion pressure unit 2 and left lower pressure unit 2.In order to make measured value more accurate, ensure also can show absorption tower density when a certain transmitter maintenance, on corresponding right side, right upper portion pressure unit 2 and lower right side pressure unit 2 are installed, the force value measured by left pressure transmitter 2 (i.e. left upper portion pressure unit 2 and left lower pressure unit 2) sends into computing unit, calculates serum density value.The force value that right atrial pressure transmitter 2 (i.e. right upper portion pressure unit 2 and lower right side pressure unit 2) is measured is sent into another computing unit, calculate serum density value, the last serum density value measured as this of twice bulk density value being averaged again, achieves densitometric uninterrupted measurement.
The installation of pressure unit 2 from absorption tower slurries distance more near better be principle, adjusting setting angle α, equal 30 ° for best with downward angle α, is also that the angle of stopple coupon 3 and desulfuration absorbing tower 1 is 30 °; Pressure unit should be arranged on gypsum region bottom height 1.0 meters and the absorption tower of 2.0 meters, too lowly easily to be affected by the gypsum slurries of natural sediment, too high repair and maintenance inconvenience.Horizontal direction can not be too far away apart from stirrer, can not between two stirrers Ta Bi central area, avoid central angle to deposit slurries, so the length that stopple coupon 3 stretches into desulfuration absorbing tower 1 is 0.2 ~ 0.3m.Hand valve 4 is installed between stopple coupon 3 and pressure unit 2, is convenient to pressure unit 2 and overhauls xegregating unit use.
The present invention also comprises display for showing serum density value and wireless communication module, and this display is connected with the output terminal of controller; The output terminal of controller is connected with external control center by this wireless communication module, to meet field observation and remote monitoring.
The computation process of density measurement
Absolute altitude is the static pressure of pressure unit 2 actual measurement of 2 meters is P1, absolute altitude is the static pressure of pressure unit 2 actual measurement at 1 meter of is P2, △ P is the differential pressure of pressure unit 2, H is current actual liquid level, ρ is absorption tower serum density, g is acceleration of gravity, and h is the distance between two differential pressure transmitters, and formula is:
P1＝ρg(H-2)
P2＝ρg(H-1)
△P＝P2－P1＝ρg(H-1)－ρg(H-2)＝ρgh
ρ＝△P/gh。
Claims (6)
1. serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant, it is characterized in that: comprise controller and at least one group of measuring mechanism, described measuring mechanism comprises two and is vertically disposed on desulfuration absorbing tower (1) pressure unit outward (2) and two stopple coupons (3), and the adapter mouth of every platform pressure unit (2) and the angle of desulfuration absorbing tower (1) are 30 ~ 35 °; One end access desulfuration absorbing tower (1) of every root stopple coupon (3) is interior, the other end connects with the adapter mouth of corresponding pressure unit (2), and every root stopple coupon (3) is equipped with hand valve (4); Often two pressure units (2) organized in measuring mechanism are all connected with the input end of the same computing unit in controller.
2. serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant according to claim 1, is characterized in that: the height of described pressure unit (2) distance desulfuration absorbing tower (1) bottom is 1.0 ~ 2.0m.
3. serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant according to claim 1 and 2, it is characterized in that: described measuring mechanism is two groups, on the desulfuration absorbing tower (1) that these two groups of measuring mechanisms are arranged in symmetrical mode.
4. serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant according to claim 1 and 2, is characterized in that: the length that described stopple coupon (3) stretches into desulfuration absorbing tower (1) is 0.2 ~ 0.3m.
5. serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant according to claim 1 and 2, is characterized in that: also comprise the display for showing serum density value, this display is connected with the output terminal of controller.
6. serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant according to claim 1 and 2, is characterized in that: also comprise wireless communication module, and the output terminal of controller is connected with external control center by this wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510125054.5A CN104677780A (en) | 2015-03-20 | 2015-03-20 | Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510125054.5A CN104677780A (en) | 2015-03-20 | 2015-03-20 | Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104677780A true CN104677780A (en) | 2015-06-03 |
Family
ID=53313131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510125054.5A Pending CN104677780A (en) | 2015-03-20 | 2015-03-20 | Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104677780A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973750A (en) * | 2016-06-28 | 2016-09-28 | 大唐韩城第二发电有限责任公司 | Method and system for measuring density of desulfurization slurry in power plant desulfurization pre-washing tower |
| CN108593196A (en) * | 2018-06-04 | 2018-09-28 | 西安建筑科技大学 | A kind of anti-blocking device for pressure measurement suitable for wet flue gas pressure measurement |
| CN111175182A (en) * | 2020-01-08 | 2020-05-19 | 华电内蒙古能源有限公司包头发电分公司 | Method for measuring density of desulfurized limestone slurry of thermal power plant |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2355324Y (en) * | 1998-09-16 | 1999-12-22 | 贵州铝厂计控厂 | Liquid densimeter |
| CN101477020A (en) * | 2009-01-12 | 2009-07-08 | 北京博奇电力科技有限公司 | Method for measuring slurry density of desulfurizing absorption column |
| CN203037548U (en) * | 2012-11-30 | 2013-07-03 | 汪林林 | Side-mounted differential pressure density measuring device |
| CN203203900U (en) * | 2013-04-28 | 2013-09-18 | 河北大唐国际张家口热电有限责任公司 | Device for measuring density of slurry in desulfuration absorption tower |
| CN203981533U (en) * | 2014-07-24 | 2014-12-03 | 北京峰业电力环保工程有限公司 | A kind of for measuring the device of serum density |
| CN204203031U (en) * | 2014-11-10 | 2015-03-11 | 广东粤电云河发电有限公司 | A kind of absorption tower slurry density measurement device |
| CN204556441U (en) * | 2015-03-20 | 2015-08-12 | 国投钦州发电有限公司 | Serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant |
-
2015
- 2015-03-20 CN CN201510125054.5A patent/CN104677780A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2355324Y (en) * | 1998-09-16 | 1999-12-22 | 贵州铝厂计控厂 | Liquid densimeter |
| CN101477020A (en) * | 2009-01-12 | 2009-07-08 | 北京博奇电力科技有限公司 | Method for measuring slurry density of desulfurizing absorption column |
| CN203037548U (en) * | 2012-11-30 | 2013-07-03 | 汪林林 | Side-mounted differential pressure density measuring device |
| CN203203900U (en) * | 2013-04-28 | 2013-09-18 | 河北大唐国际张家口热电有限责任公司 | Device for measuring density of slurry in desulfuration absorption tower |
| CN203981533U (en) * | 2014-07-24 | 2014-12-03 | 北京峰业电力环保工程有限公司 | A kind of for measuring the device of serum density |
| CN204203031U (en) * | 2014-11-10 | 2015-03-11 | 广东粤电云河发电有限公司 | A kind of absorption tower slurry density measurement device |
| CN204556441U (en) * | 2015-03-20 | 2015-08-12 | 国投钦州发电有限公司 | Serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant |
Non-Patent Citations (2)
| Title |
|---|
| 梁磊: "石灰_石膏法烟气脱硫系统塔内浆液pH值及密度测量改进", 《中国电力》 * |
| 武建强: "脱硫系统浆液密度测量方式探讨", 《热力发电》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973750A (en) * | 2016-06-28 | 2016-09-28 | 大唐韩城第二发电有限责任公司 | Method and system for measuring density of desulfurization slurry in power plant desulfurization pre-washing tower |
| CN108593196A (en) * | 2018-06-04 | 2018-09-28 | 西安建筑科技大学 | A kind of anti-blocking device for pressure measurement suitable for wet flue gas pressure measurement |
| CN111175182A (en) * | 2020-01-08 | 2020-05-19 | 华电内蒙古能源有限公司包头发电分公司 | Method for measuring density of desulfurized limestone slurry of thermal power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201666807U (en) | Device for preventing pressure pipe of transmitter meter from being blocked | |
| CN203811492U (en) | Closed type pipeline cycle erosion test device | |
| CN102486391A (en) | Bubble type automatic proportion correction liquid level meter | |
| CN204228210U (en) | A kind of wear-resisting type self-cleaning flow measurement device | |
| CN104677780A (en) | Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant | |
| CN103868822A (en) | Density determination device for slurry in wet desulfurization absorption tower | |
| CN202836556U (en) | Subgrade settlement detection system | |
| CN105004380A (en) | Gas flow measuring device for large-diameter pipes | |
| CN207991987U (en) | Serosity density measurement system | |
| CN101699264B (en) | Testing device and testing method for emission reduction of maintenance liquid in pipeline | |
| CN207703683U (en) | A kind of wet desulphurization chimney simulation test apparatus | |
| CN204203031U (en) | A kind of absorption tower slurry density measurement device | |
| CN204556441U (en) | Serum density measuring system in the wet flue gas desulfurization absorption tower of fuel-burning power plant | |
| CN203376230U (en) | Measuring device for pH (Potential of Hydrogen) value and density value of slurry | |
| CN102261943A (en) | Liquid level measuring device and method for gas tank | |
| CN208254996U (en) | A kind of flue gas wet flue gas desulfurization gypsum slurries are in line density and pH value combined measurement device | |
| CN203981533U (en) | A kind of for measuring the device of serum density | |
| CN102749111A (en) | Wet gas flow measuring method and device | |
| CN209166524U (en) | A kind of wet desulphurization slurry pH value and density joint-detection device | |
| CN106768099A (en) | A kind of adjustable gas flowmeter of resolution ratio | |
| CN205120523U (en) | Flue gas desulfurization system absorbs slurry density value measuring device | |
| CN206756633U (en) | Desulfurizing tower density on-line measurement device | |
| CN214621386U (en) | Offshore platform measuring device for measuring liquid level based on blowing method | |
| CN203964986U (en) | Desulphurization system absorbing tower liquid-level measuring system | |
| CN102486445A (en) | Bubble type slurry densimeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |