CN107389150A - A kind of wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method - Google Patents
A kind of wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method Download PDFInfo
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- CN107389150A CN107389150A CN201710704485.6A CN201710704485A CN107389150A CN 107389150 A CN107389150 A CN 107389150A CN 201710704485 A CN201710704485 A CN 201710704485A CN 107389150 A CN107389150 A CN 107389150A
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- pressure
- pallet
- liquid holdup
- monitoring
- absorption tower
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
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Abstract
The present invention relates to a kind of measuring method of wet method fume desulfurizing system absorption tower pallet liquid holdup.A kind of wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method, pallet liquid holdup is monitored by the liquid level of diverse location on circulatory monitoring pallet：Pressure sensing port is evenly arranged in tray bottom, each pressure sensing port is connected by corresponding pressure measurement pipeline with pressure sensor, and installs magnetic valve on described each pressure measurement pipeline；By the UNICOM of each pressure measurement pipeline of solenoid valve control and pressure sensor whether, selectivity or according to certain rules test corresponding to pressure sensing port relative position pressure；The pressure sensor output signal is connected with display instrument or monitoring system, and display instrument or monitoring system realize absorption tower pallet liquid holdup monitoring by monitoring the change of pressure signal.By monitoring the change of pallet liquid holdup, on the basis of ensureing that sulfur dioxide is up to standard, pallet liquid holdup is reduced, reduces system pressure losses, plays the purpose of energy-conservation.
Description
Technical field
The present invention relates to a kind of wet method fume desulfurizing system, is held in the palm more particularly, to a kind of wet method fume desulfurizing system absorption tower
The measuring method of disk liquid holdup.
Background technology
In the absorption tower of wet desulfurization system, the spray flux and increase flue gas and absorbent drop of desulfurization absorbent are improved
Contact area be improve desulfuration efficiency Main Means.This aspect will be by the flow of regulation slurry circulating pump（Improve liquid gas
Than）And higher nozzle exit pressure drop（Increase spray coverage rate and droplet surface area）Reach required as major parameter to take off
Sulphur efficiency, it can in addition contain use some to strengthen contact arrangement to improve the contact area of gas and slurries to improve desulfurization effect
Rate, pallet are exactly the one kind being wherein most widely used.
Pallet provides more effective flue gas and slurry liquid contacts mode than spraying layer.First, resistance caused by pallet causes
Gas flow is evenly distributed in tower section.This resistance formed when gas and slurries rigid connection touch makes slurries uniform, always
To uptake zone.Therefore, contact of the slurries with flue gas is all optimised in whole absorption region.In the spray void tower of pallet-free, flue gas
By spraying layer rectification, although flue gas can also be redistributed by continuous sprayed slurry resistance in such cases, due to now cigarette
Gas has been subjected to most uptake zone, and this does not just make full use of provided liquid-gas ratio, and unbalanced gas distribution causes absorbing
High or low liquid-gas ratio on tower section, seriously limit overall sulfur dioxide removal efficiency.
Pallet except before can making spray smoke distribution uniformly in addition to, two effects can also be played：First, gas-liquid shape on pallet
Into bubbling, mass transfer area is expanded, resistance to mass tranfer is reduced, desulphurization reaction is carried out more abundant；Two are easy for overhauling orlop
Spraying layer.Pallet typically uses porous flat plate structure, and material is mostly acid-resistant stainless steel, and aperture is generally 25~40mm, perforate
Area is 25%~50%, and sieve plate thickness of slab is usually 3-6mm, divider height about 300mm.For the ease of the processing and maintenance of sieve plate,
Sieve plate uses modularized design in tower.By taking certain power plant 300MW units as an example, desulfurizing tower internal diameter is 12.6m, tower centre sieve plate
By 78 fritters（It is 1.525m × 0.8m per fritter）Composition, each fritter are provided with 450 a diameter of 35mm aperture, and percent opening is
35.5%, it is in equilateral triangle arrangement between adjacent holes.
Patent CN201610516382.2 discloses a kind of folding fan-shaped absorption tower pallet, its roll over sector structure with it is traditional more
Hole plate structure is compared, and has bigger perforated area in identical horizontal projected area, and air resistance is smaller.In addition, perforate
The drop that liquid barrier can prevent from converging in tray wall is fallen along perforate, improves the collection rate of reaction solution.Finally, reaction solution is in great Po
Quick outflow pallet in runner is spent, the problem of effectively alleviating solid deposition and fouling in reaction solution.
Patent CN205235749U provides a kind of novel desulphurization pallet apparatus, including gas cap, pallet, boatswain chair, cone cap.Gas
Cap is fixed on pallet top, and cone cap is fixed on pallet bottom by boatswain chair.Gas cap is hollow cylinder body, internal diameter and pallet hole one
Cause, open a certain size some circular holes on gas cap wall so that the gas through tower tray is dispersed.Pallet hole is provided with pallet,
Aperture is consistent with gas cap hole internal diameter, and gas cap is placed on pallet hole, and the quantity of gas cap is equal with pallet hole number.Boatswain chair is thin slice,
Thickness 2-3mm.Cone cap is conical plate, is placed at the 10-15cm of pallet bottom, and each cap of boring matches somebody with somebody 2-4 boatswain chair.The pallet is big
The big residence time for improving gas in tower, the reaction time of sulfur dioxide and slurries is substantially increased, improves gas-liquid mass transfer
Area, improve desulfuration efficiency.
Patent CN205109329U discloses a kind of pallet for reducing the adherent flow phenomenon of flue gas, and the middle local of pallet is opened
Hole, the closed not perforate of edge annular region, the percent opening of local is 0.3-0.5 among pallet, and the interior edge of its not opening area arrives
The distance of inner wall of tower is 1%D~5%D, and D is the internal diameter of desulfurizing tower, and the not opening area of pallet is upturned, with perforate local
Between be in 120-150 ° of angle；The desulfurizing tower of the pallet of the adherent flow phenomenon of flue gas can be reduced present invention also offers a kind of use,
Pallet is on desulfurizing tower entrance, and under the lowermost layer of spraying layer, demister is provided with the superiors of spraying layer；This hair
It is bright to make velocity of flue gas relative deviation raising more than 10% at spraying layer in tower, effectively reduce flue gas sticking wall flow in desulfurizing tower and show
As having good environmental protection and economy benefit.
Pallet can accumulate some slurries during operation on pallet, the number for accumulating slurries is referred to as the liquid holdup of pallet,
Liquid holdup is more big more is advantageous to desulfurization, but liquid holdup is bigger simultaneously, and SR is often also bigger, and system energy consumption is also higher, support
The liquid holdup of disk is also influenceed in addition to being influenceed by itself percent opening by factors such as the gentle liquor ratios of slurries property, namely exhaust gas volumn
Size, flue gas flow field distribution, slurries spray flux, slurries composition, the method for operation etc. of slurry circulating pump influence.And slurries quality and
Liquid-gas ratio be exactly influence desulfuration efficiency principal element, it can be seen that, pallet liquid holdup number directly affect desulfurized effect.Cause
This is monitored to pallet liquid holdup to keeping absorption tower desulfurized effect significant in operation.At present it is not yet found that
The monitoring method and device of wet flue gas desulfurization absorption tower pallet liquid holdup.
The content of the invention
The present invention is in view of the shortcomings of the prior art, propose a kind of wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring
Method, by monitoring the change of pallet liquid holdup, on the basis of ensureing that sulfur dioxide is up to standard, pallet liquid holdup is reduced, is reduced
System pressure losses, play the purpose of energy-conservation.
The technical solution adopted in the present invention：
A kind of wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method, pass through diverse location on circulatory monitoring pallet
Liquid level monitors pallet liquid holdup：
1）Pressure sensing port is evenly arranged in tray bottom, each pressure sensing port passes through corresponding pressure measurement pipeline and pressure sensor
It is connected, and magnetic valve is installed on described each pressure measurement pipeline；
2）By the UNICOM of each pressure measurement pipeline of solenoid valve control and pressure sensor whether, selectivity or test according to certain rules
The pressure of corresponding pressure sensing port relative position；
3）The pressure sensor output signal is connected with display instrument or monitoring system, and display instrument or monitoring system pass through prison
The change of pressure measurement force signal, realize absorption tower pallet liquid holdup monitoring.
Described wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method, each pressure measurement pipeline pass through multiway valve
It is connected with pressure sensor, the monitoring of whole pressure pallet is realized using a pressure sensor, saves the arrangement of sensor
Number, reduce system complexity and reduce investment outlay.
Described wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method, pressure-measuring-point blocking are set, and
It is corresponding with pallet；Then each pressure measurement pipeline is connected and pressed by multiway valve by magnetic valve cut-in pressure measuring point main pipeline
Force snesor connects, upper and lower two layers of the interlaced arrangement of pressure-measuring-point main pipeline, to play even gas distribution effect and partly take on
The function of pallet.
Beneficial effects of the present invention：
1st, pallet liquid holdup monitoring method in wet method fume desulfurizing system absorption tower of the present invention, simple in construction, design science is reasonable, holds
Easily realize.By monitoring the change of pallet liquid holdup, it can be further implemented on the basis of ensureing that sulfur dioxide is up to standard, reduce
Pallet liquid holdup, to reduce system pressure losses, play the purpose of energy-conservation.
2nd, pallet liquid holdup monitoring method in wet method fume desulfurizing system absorption tower of the present invention, pressure-measuring-point main pipeline is in staggeredly
Set, make the flue gas into pallet uniform, play the effect of gas distribution.In addition, the arrangement of pressure test pipeline can portion
Divide and play a part of pallet, contribute to the arrangement number of plies for reducing pallet, while improving desulfuration efficiency, reduce economic input.
It is pallet liquid holdup monitoring method system diagram in flue gas desulphurization system absorption tower of the present invention to illustrate Fig. 1；
Fig. 2 is absorption tower pallet liquid holdup monitoring method pressure pallet point layout schematic diagram of the present invention.
Embodiment
Below by embodiment, technical scheme is described in further detail.
Embodiment 1
Referring to Fig. 1, pallet liquid holdup monitoring method in wet method fume desulfurizing system absorption tower of the present invention, by circulatory monitoring pallet
The liquid level of diverse location monitors pallet liquid holdup：
1）Pressure sensing port is evenly arranged in tray bottom（Pressure-measuring-point）, each pressure sensing port by corresponding pressure measurement pipeline with
Pressure sensor 1 is connected, and magnetic valve 4 is installed on described each pressure measurement pipeline；
2）Whether the UNICOM of each pressure measurement pipeline and pressure sensor 1 is controlled by magnetic valve 4, is surveyed selectively or according to certain rules
The pressure of pressure sensing port relative position corresponding to examination；
3）The pressure sensor defeated 1 goes out signal and is connected with display instrument or monitoring system 2, and display instrument or monitoring system 2 are logical
The change of monitoring pressure signal is crossed, realizes absorption tower pallet liquid holdup monitoring.
In figure, demister, spraying layer and pallet are followed successively by absorption tower from top to bottom.Label 3 represents serum recycle in figure
Pump.
Embodiment 2
Referring to Fig. 1, the wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method of the present embodiment, with embodiment 1 not
It is with part：Each pressure measurement pipeline is connected by multiway valve 5 with pressure sensor, is realized using a pressure sensor whole
The monitoring of pressure pallet, to save the arrangement number of sensor, reduce system complexity and reduce investment outlay.
Embodiment 3
Referring to Fig. 1, Fig. 2, the wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method of the present embodiment, with embodiment 1
Difference be：Pressure-measuring-point blocking is set, and corresponding with pallet；Each pressure measurement pipeline passes through magnetic valve cut-in pressure
Measuring point main pipeline, then it is connected by multiway valve and is connected with pressure sensor, upper and lower two layers of the friendship of pressure-measuring-point main pipeline
Mistake arrangement, to play even gas distribution effect and partly take on the function of pallet.
Referring to Fig. 2, solid line and dotted line are respectively upper and lower two layers of pressure-measuring-point main pipeline, and two upper strata pressure-measuring-points are responsible for
Road（It is shown in solid）Midline position arranged just beneath has lower floor's pressure-measuring-point main pipeline（Shown in dotted line）.
Claims (3)
- A kind of 1. wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method, it is characterised in that：Pass through circulatory monitoring support The liquid level of diverse location monitors pallet liquid holdup on disk：1）Pressure sensing port is evenly arranged in tray bottom, each pressure sensing port passes through corresponding pressure measurement pipeline and pressure sensor It is connected, and magnetic valve is installed on described each pressure measurement pipeline；2）By the UNICOM of each pressure measurement pipeline of solenoid valve control and pressure sensor whether, selectivity or test according to certain rules The pressure of corresponding pressure sensing port relative position；3）The pressure sensor output signal is connected with display instrument or monitoring system, and display instrument or monitoring system pass through prison The change of pressure measurement force signal, realize absorption tower pallet liquid holdup monitoring.
- 2. pallet liquid holdup monitoring method in wet method fume desulfurizing system absorption tower according to claim 1, it is characterised in that： Each pressure measurement pipeline is connected by multiway valve with pressure sensor, and the prison of whole pressure pallet is realized using a pressure sensor Survey, to save the arrangement number of sensor, reduce system complexity and reduce investment outlay.
- 3. pallet liquid holdup monitoring method in wet method fume desulfurizing system absorption tower according to claim 1 or 2, its feature exist In：Pressure-measuring-point blocking is set, and corresponding with pallet；Each pressure measurement pipeline by magnetic valve cut-in pressure measuring point main pipeline, Then it is connected by multiway valve and is connected with pressure sensor, upper and lower two layers of the interlaced arrangement of pressure-measuring-point main pipeline, to rise Take on to even gas distribution effect and partly the function of pallet.
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| CN201710704485.6A CN107389150A (en) | 2017-08-17 | 2017-08-17 | A kind of wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method |
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| CN201710704485.6A CN107389150A (en) | 2017-08-17 | 2017-08-17 | A kind of wet method fume desulfurizing system absorption tower pallet liquid holdup monitoring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015941A (en) * | 2019-04-11 | 2019-07-16 | 大连华立金港药业有限公司 | A kind of monitoring method preparing liquid holdup during high nurity elemene |
| CN113408905A (en) * | 2021-06-21 | 2021-09-17 | 西安热工研究院有限公司 | Wet desulphurization system absorption tower energy efficiency evaluation method, system, equipment and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1475778A (en) * | 2002-07-31 | 2004-02-18 | �յÿ���ʽ���� | Liquid level detector |
| CN1963449A (en) * | 2006-11-20 | 2007-05-16 | 江苏苏源环保工程股份有限公司 | Testing method for serum density of serum pot or fume desulfurating absorption tower |
| CN102062654A (en) * | 2009-11-12 | 2011-05-18 | 无锡千里信步精密机电科技有限公司 | 2D design of multidimensional matrix sensors applying flexible liquid enclosed pressure sensors |
| CN102445251A (en) * | 2011-09-26 | 2012-05-09 | 华北电力大学（保定） | Method for measuring liquid level of slurry and thickness of foam layer in absorption tower |
| CN204154352U (en) * | 2013-12-10 | 2015-02-11 | 中国神华能源股份有限公司 | The liquid level emasuring device on absorption tower |
| CN105455557A (en) * | 2015-06-30 | 2016-04-06 | 深圳市臻络科技有限公司 | Hand-held utensil for containing water and method for monitoring volume of water in utensil |
| 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 |
| CN205981271U (en) * | 2016-01-30 | 2017-02-22 | 武汉大学 | Measurement of intelligence urine and detection device |
-
2017
- 2017-08-17 CN CN201710704485.6A patent/CN107389150A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1475778A (en) * | 2002-07-31 | 2004-02-18 | �յÿ���ʽ���� | Liquid level detector |
| CN1963449A (en) * | 2006-11-20 | 2007-05-16 | 江苏苏源环保工程股份有限公司 | Testing method for serum density of serum pot or fume desulfurating absorption tower |
| CN102062654A (en) * | 2009-11-12 | 2011-05-18 | 无锡千里信步精密机电科技有限公司 | 2D design of multidimensional matrix sensors applying flexible liquid enclosed pressure sensors |
| CN102445251A (en) * | 2011-09-26 | 2012-05-09 | 华北电力大学（保定） | Method for measuring liquid level of slurry and thickness of foam layer in absorption tower |
| CN204154352U (en) * | 2013-12-10 | 2015-02-11 | 中国神华能源股份有限公司 | The liquid level emasuring device on absorption tower |
| CN105455557A (en) * | 2015-06-30 | 2016-04-06 | 深圳市臻络科技有限公司 | Hand-held utensil for containing water and method for monitoring volume of water in utensil |
| CN205981271U (en) * | 2016-01-30 | 2017-02-22 | 武汉大学 | Measurement of intelligence urine and detection device |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 梁晏萱 等: "双托盘喷淋塔在石灰石-石膏湿法脱硫装置改造中的应用" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015941A (en) * | 2019-04-11 | 2019-07-16 | 大连华立金港药业有限公司 | A kind of monitoring method preparing liquid holdup during high nurity elemene |
| CN113408905A (en) * | 2021-06-21 | 2021-09-17 | 西安热工研究院有限公司 | Wet desulphurization system absorption tower energy efficiency evaluation method, system, equipment and storage medium |
| CN113408905B (en) * | 2021-06-21 | 2023-03-14 | 西安热工研究院有限公司 | Method, system, equipment and storage medium for evaluating energy efficiency of absorption tower of wet desulphurization system |
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