CN103674162A - Liquid level measuring device and method for absorption tower - Google Patents
Liquid level measuring device and method for absorption tower Download PDFInfo
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- CN103674162A CN103674162A CN201310665143.XA CN201310665143A CN103674162A CN 103674162 A CN103674162 A CN 103674162A CN 201310665143 A CN201310665143 A CN 201310665143A CN 103674162 A CN103674162 A CN 103674162A
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Abstract
The invention discloses a liquid level measuring device and method for an absorption tower. The device comprises n pressure transmitters and a controller, wherein the n pressure transmitters are arranged on the absorption tower at intervals mutually in the height direction and are used for detecting the pressure value of seriflux in the absorption tower, and n is a natural number larger than or equal to two; the controller is respectively electrically connected with the n pressure transmitters and used for calculating the liquid level of the seriflux in the absorption tower according to electric signals which express the pressure valve of the seriflux in the absorption tower and are received by all the pressure transmitters. Through the technical scheme, the problem that a display value of the liquid level of the absorption tower does not conform to the actual liquid level in the absorption tower is solved, particularly, the n pressure transmitters are arranged on the absorption tower at intervals mutually in the height direction and are used for detecting the pressure value of the seriflux in the absorption tower, and when a desulfurization system operates normally, the controller calculates the average density in the absorption tower according to the pressure valve measured by the pressure transmitters and then calculates the liquid level of the absorption tower according to a formula.
Description
Technical field
The present invention relates to a kind of absorption tower of processing for desulfurization, more particularly, relate to a kind of liquid level emasuring device and method of absorption tower.
Background technology
In boiler smoke, conventionally contain a certain amount of sulphur, directly be discharged into atmosphere meeting contaminated air, therefore according to national standard < < emission standard of air pollutants for boilers > >, the discharge of boiler smoke just can be discharged in air after need meeting predetermined requirement.Conventionally, boiler smoke need to be processed and just can be discharged in atmosphere through desulfurization, and the desulphurization reaction of boiler smoke generally completes in absorption tower.
There is various structures perhaps on the absorption tower that desulfurization is used, according to different gas-liquid contact modes, desulfurizer can be divided into spray column, packed tower, bubble tower and fluid column absorption tower etc., at present, spray column is common equipment in gas liquid reaction engineering, and it comprises absorption tower body, spraying layer, mist eliminator, circulation stock pump, oxidation fan, stirrer, gypsum extraction pump etc.Loop slurry self-absorption tower bottom is upwards delivered to absorption tower spraying layer and is passed through nozzle ejection by slurry circulating pump.Flue gas enters from middle part, absorption tower, and entrance is between stock tank the highest liquid level top, absorption tower and minimum one deck spraying layer bottom.In absorption tower, the lime-gypsum slurries counter current contacting that flue gas and top spray get off, lime reaction in sulphuric dioxide in flue gas and sulfuric anhydride and slurries, form calcium sulfite and calcium sulphate, calcium sulfite is oxidised with air to calcium sulphate in the stock tank of absorption tower, the crystallization of calcium sulphate supersaturated solution generates gypsum, is deposited in the bottom on absorption tower.The gypsum that is deposited in bottom, absorption tower is discharged absorption tower by gypsum extraction pump, enters gypsum dehydration system.When said process carries out, because finally will changing into gypsum, slurries get rid of in absorption tower, therefore in spray, need constantly in absorption tower, to inject slurries, make the slurries in absorption tower there is certain liquid level.
In sweetening process, absorbing tower liquid-level is the important operational factor of desulphurization system, and the too high meeting of liquid level causes absorption tower slurries overflow, and liquid level is too low can reduce desulfuration efficiency, i.e. the control of absorbing tower liquid-level is directly connected to the safety and economic operation of desulphurization system.At present, as shown in Figure 1, first the general mode of indirectly measuring that adopts of the measurement of absorbing tower liquid-level, measure static pressure or the differential pressure of fixed position, then according to formula Δ Ρ=ρ g Δ Η, calculates the liquid level on absorption tower:
In formula, Δ Ρ is directly measured by pressure unit or differential pressure transmitter; ρ is the data that the densitometer 17 of bottom, absorption tower installation is measured, and it is revised, so that calculated value and actual value are suitable; Η
1the setting height(from bottom) of the first pressure unit 11, from (zero liquid level) bottom absorption tower to the height of the installation site of the first pressure unit.Special instruction: the Δ Η is here a dynamic variable quantity, and the height of the slurries that inject in absorption tower is Η
1time, Δ Η is 0, Δ Ρ is zero.
Yet, existence due to problems such as slurries foamings in absorption tower under slurries layering in absorption tower, different operating mode, the density that the densitometer that causes bottom, absorption tower to be installed records can not accurately reflect the actual density of slurries in absorption tower, and then the liquid level that causes absorption tower shows and actual liquid level is not inconsistent, absorbing tower liquid-level even occurs and show less than overflow liquid level, and the situation of overflow of absorption tower reality had both been wasted slurries, pollute again environment, but also likely had influence on desulfuration efficiency.
Therefore, need to provide a kind of technical scheme that can Measurement accuracy absorbing tower liquid-level.
Summary of the invention
The liquid level emasuring device and the method that the object of this invention is to provide a kind of absorption tower, show to overcome the liquid level on absorption tower in prior art the problem not being inconsistent with actual liquid level.
To achieve these goals, the invention provides a kind of liquid level emasuring device of absorption tower, this liquid level emasuring device comprises:
N pressure unit, this n pressure unit is arranged on described absorption tower at each interval along short transverse, and for detection of the force value of slurries in described absorption tower, n is more than or equal to 2 natural number; With
Controller, this controller is electrically connected to a described n pressure unit respectively, for calculate the liquid level of slurries in described absorption tower according to the electric signal of the force value of slurries in the described absorption tower of expression receiving from each pressure unit.
Preferably, this liquid level emasuring device also comprises display, and this display is electrically connected to described controller and for showing the data of the liquid level of slurries in the described absorption tower that described controller calculates.
Preferably, described pressure unit comprises the first pressure unit, the second pressure unit and the 3rd pressure unit upwards setting gradually along short transverse, and the position of described the 3rd pressure unit is not higher than the mxm. of the level allowance scope of slurries in described absorption tower.
Preferably, described absorption tower comprises the manhole that is positioned at bottom, and described the first pressure unit is arranged on the position of the manhole on contiguous described absorption tower.
Preferably, described the first pressure unit, the second pressure unit, the 3rd pressure unit arrange equally spacedly along short transverse.
Preferably, described absorption tower comprises run-down pipe, described run-down pipe comprises the first pipe and the second pipe, and described the first pipe is drawn and extended upward from the sidewall on described absorption tower, and the position that described the first pipe is connected in described absorption tower is not higher than the mxm. of the level allowance scope of slurries in described absorption tower; Described the second pipe is communicated with the sidewall of described the first pipe and to downward-extension.
Preferably, the liquid level emasuring device on described absorption tower also comprises the guide wave radar liquid level gauge being electrically connected to described controller, and this guide wave radar liquid level gauge is arranged on the top downward of described the first pipe.
The present invention also provides a kind of liquid level emasuring device that utilizes absorption tower to measure the method for liquid level of slurry in absorption tower, and described liquid level emasuring device comprises:
Two pressure units, these two pressure units are arranged on described absorption tower at each interval along short transverse, for detection of the force value of slurries in described absorption tower; With
Controller, this controller is electrically connected to described two pressure units respectively, for calculate the liquid level of slurries in described absorption tower according to the electric signal of the force value of slurries in the described absorption tower of expression receiving from each pressure unit;
Described measuring method comprises the following steps:
S1: described in each, pressure unit is measured respectively the pressure value P of the slurries of described absorption tower correspondence position
1, P
2;
S2: described controller is according to formula
calculate the average density ρ of two slurries between pressure unit
1,2, according to formula
calculate the liquid level H on absorption tower, wherein Η
1and Η
2be respectively the height of installation site of first pressure unit and the height of the installation site of second pressure unit, Δ Η is the distance between liquid level in the installation site of second pressure unit and described absorption tower.
The present invention also provides a kind of liquid level emasuring device that utilizes absorption tower to measure the method for liquid level of slurry in absorption tower, and described liquid level emasuring device comprises:
N pressure unit, this n pressure unit is arranged on described absorption tower at each interval along short transverse, and for detection of the force value of slurries in described absorption tower, n is greater than 2 natural number; With
Controller, this controller is electrically connected to a described n pressure unit respectively, for calculate the liquid level of slurries in described absorption tower according to the electric signal of the force value of slurries in the described absorption tower of expression receiving from each pressure unit;
Described measuring method comprises the following steps:
S1:n described pressure unit measured respectively the pressure value P of the slurries of correspondence position in described absorption tower
1, P
2p
n-1, P
n;
S2: described controller is according to formula
calculate the average density ρ of the slurries between any two adjacent pressure units
n-1, n, and according to the average density of described slurries, calculate the average density of the slurries of absorption tower inner height on n pressure unit setting height(from bottom)
according to formula
calculate the liquid level H on absorption tower, wherein, Η
nbe the height of the installation site of n pressure unit, the distance in the installation site that Δ Η is n pressure unit and described absorption tower between liquid level.
Preferably, described absorption tower comprises run-down pipe, described run-down pipe comprises the first pipe and the second pipe, and described the first pipe is drawn and extended upward from the sidewall on described absorption tower, and the position that described the first pipe is connected in described absorption tower is not higher than the mxm. of the level allowance scope of slurries in described absorption tower; Described the second pipe is communicated with the sidewall of described the first pipe and to downward-extension; The liquid level emasuring device on described absorption tower also comprises the guide wave radar liquid level gauge being electrically connected to described controller, and this guide wave radar liquid level gauge is arranged on the top downward of described the first pipe;
Described method also comprises, described guide wave radar liquid level gauge is measured the distance h of the liquid level of slurries in its installation site and absorption tower, and this measured value is sent to described controller, and described controller is according to formula H
1=H
guide wave radar liquid level gauge-h calculates the liquid level of slurries in absorption tower, wherein H
guide wave radar liquid level gaugesetting height(from bottom) for guide wave radar liquid level gauge.
Preferably, described method also comprises: described controller is by the level value H of slurries in the described absorption tower that utilizes described pressure unit to record and the level value H that utilizes slurries in the described absorption tower that described guide wave radar liquid level gauge records
1make comparisons,
As H and H
1difference in preset range time, in described absorption tower, the liquid level of slurries is got described H;
As H and H
1difference while surpassing preset range, in described absorption tower, the liquid level of slurries is got described H
1.
By technique scheme, the invention solves the problem that in absorbing tower liquid-level displayed value and absorption tower, actual liquid level is not inconsistent.Concrete, on absorption tower, along its short transverse, arrange at each interval n for detection of the pressure unit of the force value of slurries in described absorption tower, when desulphurization system is normally moved, described controller according to described pressure unit, record force value, calculate the average density in absorption tower, and then, according to formula, calculate the liquid level on absorption tower.
Other features and advantages of the present invention partly in detail are described the embodiment subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for instructions, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the liquid level emasuring device on the absorption tower in background technology.
Fig. 2 is a kind of structural representation of embodiment of the liquid level emasuring device on absorption tower provided by the invention.
Fig. 3 is a kind of process flow diagram of embodiment of the level measuring method on absorption tower provided by the invention.
Description of reference numerals
10: absorption tower; 11: the first pressure units;
12: the second pressure units; 13: the three pressure units;
14: guide wave radar liquid level gauge; 15: the second pipes;
16: the first pipes; 17: densitometer.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
In the present invention, in the situation that not doing contrary explanation, the noun of locality of use typically refers to reference to upper and lower, left and right shown in the drawings as " upper and lower, left and right "; " inside and outside " refers to inside and outside with respect to the profile of each parts itself.
It should be noted that, first, in the present invention, " first pressure unit, second pressure unit ... n pressure unit " refers to along absorption tower short transverse and upwards sorts successively first, second .... n.Secondly, in the present invention, " setting height(from bottom) " refers to the installation site from bottom, absorption tower (zero liquid level) to each parts, for example, n pressure unit setting height(from bottom) refers to, the height from bottom, absorption tower (zero liquid level) to the installation site of n pressure unit.Finally, in the present invention, " slurries between two adjacent pressure units ", here for convenience of explanation, such as these two adjacent pressure units are called the first pressure unit and the second pressure unit, on absorption tower, use a tangent plane to cut along the position of the first pressure unit, use another tangent plane to cut along the position of the second pressure unit, now, " slurries between the first pressure unit and the second pressure unit " refer to, the slurries in absorption tower between these two tangent planes.
Liquid level based on absorption tower in prior art shows the problem not being inconsistent with actual liquid level, the invention provides a kind of liquid level emasuring device of absorption tower, and as shown in Figure 2, this liquid level emasuring device comprises: a controller and n pressure unit 11,12,13.A described n pressure unit 11,12,13 is arranged on described absorption tower 10 at each interval along short transverse, and for detection of the force value of slurries in described absorption tower, wherein, n is more than or equal to 2 natural number.Described controller is electrically connected to a described n pressure unit 11,12,13 respectively, for calculate the liquid level of slurries in described absorption tower according to the electric signal of the force value of slurries in the described absorption tower of expression receiving from each pressure unit 11,12,13.
By technique scheme, the invention solves the problem that in absorbing tower liquid-level displayed value and absorption tower, actual liquid level is not inconsistent.Concrete, utilize the liquid level emasuring device on described absorption tower to measure the method step of the liquid level of slurries in absorption tower as follows, it should be noted that, the value of n is different, and measuring method is also different, here first describes in detail, when n is while being greater than 2 natural number, measure the method for liquid level of slurry in absorption tower:
S1:n described pressure unit 11,12,13 measured respectively the pressure value P of the slurries of described absorption tower 10 interior correspondence positions
1, P
2p
n-1, P
n;
S2: described controller is according to formula
calculate the average density ρ of the slurries between any two adjacent pressure units
n-1, n, and according to the average density of described slurries, calculate the average density of the slurries of absorption tower 10 inner heights on n pressure unit setting height(from bottom)
according to formula
calculate the liquid level H on absorption tower, wherein, Η
nbe the height of the installation site of n pressure unit, the distance in the installation site that Δ Η is n pressure unit and described absorption tower between liquid level.Described ρ
on naccording to the ρ having calculated
n-1, n, in conjunction with the scale-up factor of variable density
extrapolate
In addition, for the situation of n=2, that is, described liquid level emasuring device comprises: two pressure units, and now, in described absorption tower, the measuring method of the liquid level of slurries comprises the following steps:
S1: described in each, pressure unit is measured respectively the pressure value P of the slurries of described absorption tower 10 correspondence positions
1, P
2;
S2: described controller is according to formula
calculate the average density ρ of two slurries between pressure unit
1,2, according to formula
calculate the liquid level H on absorption tower, wherein Η
1and Η
2be respectively the height of installation site of first pressure unit and the height of the installation site of second pressure unit, Δ Η is the distance between liquid level in the installation site of second pressure unit and described absorption tower.
Why utilize the liquid level of the liquid level emasuring device on absorption tower provided by the invention slurries in measure absorbing, overcome the problem that in prior art, in absorbing tower liquid-level displayed value and absorption tower, actual liquid level is not inconsistent, be because, in prior art, be by bottom, absorption tower packing density meter 17, and then calculate the liquid level in absorption tower by formula, and in the present invention, the density of using while calculating the liquid level of slurries in absorption tower is not the density that is confined to absorption tower inner bottom part liquid, but utilized the average density of multistage liquid in absorption tower, therefore there is not limitation of the prior art, and then there will not be the problem that in absorbing tower liquid-level displayed value and absorption tower, actual liquid level is not inconsistent.
Preferably, in order to make staff obtain easily the liquid level of slurries in the absorption tower that described controller calculates, this liquid level emasuring device also comprises display, and this display is electrically connected to described controller and for showing the data of the liquid level of slurries in the described absorption tower that described controller calculates.
As one embodiment of the present invention, described pressure unit comprises the first pressure unit 11, the second pressure unit 12 and the 3rd pressure unit 13 upwards setting gradually along short transverse, and the position of described the 3rd pressure unit 13 is not higher than the mxm. of the level allowance scope of described absorption tower 10 interior slurries.In addition, in order to pass through as much as possible the measured value of described pressure unit, calculate the average density of slurries as much as possible in absorption tower, that is to say, for the average density calculating according to described pressure unit has more representativeness, described absorption tower comprises the manhole that is positioned at bottom, and described the first pressure unit 11 is arranged on the position of the manhole on contiguous described absorption tower 10.Described the first pressure unit 11, the second pressure unit 12, the 3rd pressure unit 13 arrange equally spacedly along short transverse.
In order to make staff conveniently learn that slurries in described absorption tower obtain the situation of liquid level, described absorption tower 10 comprises run-down pipe, described run-down pipe comprises the first pipe 16 and the second pipe 15, described the first pipe 16 is drawn and is extended upward from the sidewall on described absorption tower 10, and the position that described the first pipe 16 is connected in described absorption tower 10 is not higher than the mxm. of the level allowance scope of described absorption tower 10 interior slurries; Described the second pipe 15 and described first manages that 16 sidewall is communicated with and to downward-extension.
Because the slurries in absorption tower may be due to the easy bubble of the generation (sulphuric dioxide in flue gas or sulfuric anhydride react with slurries in absorption tower) of chemical reaction, and in absorption tower during slurries bubble, the measurement variation of described pressure unit is little (because pressure is relevant with gravity, and bubble can not affect the weight of liquid), quite large but the height of the foam in absorption tower can change.In view of this, the liquid level emasuring device on described absorption tower also comprises the guide wave radar liquid level gauge 14 being electrically connected to described controller, and this guide wave radar liquid level gauge 14 is arranged on described the first pipe top of 16 downward.In the case, the method for measuring slurries in described absorption tower also comprises, the distance h of the liquid level of slurries in described guide wave radar liquid level gauge 14 its installation sites of measurement and absorption tower, and this measured value is sent to described controller, described controller is according to formula H
1=H
guide wave radar liquid level gauge-h calculates the liquid level of slurries in absorption tower, wherein H
guide wave radar liquid level gaugesetting height(from bottom) for guide wave radar liquid level gauge 14.
Further, described method (process flow diagram of the method is as shown in Figure 3) also comprises:
Described controller is by the level value H of slurries in the described absorption tower that utilizes described pressure unit to record and the level value H that utilizes slurries in the described absorption tower that described guide wave radar liquid level gauge 14 records
1make comparisons,
As H and H
1difference in preset range time, in described absorption tower, the liquid level of slurries is got described H, that is to say, now, the slurries in described absorption tower are bubble not;
As H and H
1difference while surpassing preset range, in described absorption tower, the liquid level of slurries is got described H
1, that is to say, now, the slurries bubble in described absorption tower.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.
In addition, between various embodiment of the present invention, also can carry out combination in any, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1. the liquid level emasuring device on absorption tower, is characterized in that, this liquid level emasuring device comprises:
N pressure unit (11,12,13), it is upper that this n pressure unit (11,12,13) is arranged on described absorption tower (10) at each interval along short transverse, and for detection of the force value of slurries in described absorption tower, n is more than or equal to 2 natural number; With
Controller, this controller respectively with a described n pressure unit (11,12,13) be electrically connected to, for calculate the liquid level of slurries in described absorption tower according to the electric signal of the force value of slurries in the described absorption tower of expression receiving from each pressure unit (11,12,13).
2. the liquid level emasuring device on absorption tower according to claim 1, it is characterized in that, this liquid level emasuring device also comprises display, and this display is electrically connected to described controller and for showing the data of the liquid level of slurries in the described absorption tower that described controller calculates.
3. the liquid level emasuring device on absorption tower according to claim 1, it is characterized in that, described pressure unit comprises the first pressure unit (11), the second pressure unit (12) and the 3rd pressure unit (13) upwards setting gradually along short transverse, and the position of described the 3rd pressure unit (13) is not higher than the mxm. of the level allowance scope of the interior slurries in described absorption tower (10).
4. the liquid level emasuring device on absorption tower according to claim 3, is characterized in that, described absorption tower comprises the manhole that is positioned at bottom, and described the first pressure unit (11) is arranged on the position of the manhole on contiguous described absorption tower (10).
5. according to the liquid level emasuring device on the absorption tower described in claim 3 or 4, it is characterized in that, described the first pressure unit (11), the second pressure unit (12), the 3rd pressure unit (13) arrange equally spacedly along short transverse.
6. the liquid level emasuring device on absorption tower according to claim 1, it is characterized in that, described absorption tower (10) comprises run-down pipe, described run-down pipe comprises the first pipe (16) and the second pipe (15), described the first pipe (16) is drawn and is extended upward from the sidewall of described absorption tower (10), and the position that described the first pipe (16) is connected in described absorption tower (10) is not higher than the mxm. of the level allowance scope of the interior slurries in described absorption tower (10); Described the second pipe (15) is communicated with the described first sidewall of managing (16) and to downward-extension.
7. the liquid level emasuring device on absorption tower according to claim 6, it is characterized in that, the liquid level emasuring device on described absorption tower also comprises the guide wave radar liquid level gauge (14) being electrically connected to described controller, and this guide wave radar liquid level gauge (14) is arranged on the top downward of described the first pipe (16).
8. utilize the liquid level emasuring device on absorption tower to measure a method for liquid level of slurry in absorption tower, it is characterized in that: described liquid level emasuring device comprises:
Two pressure units (11,12,13), it is upper that these two pressure units (11,12,13) are arranged on described absorption tower (10) at each interval along short transverse, for detection of the force value of slurries in described absorption tower; With
Controller, this controller respectively with described two pressure units (11,12,13) be electrically connected to, for calculate the liquid level of slurries in described absorption tower according to the electric signal of the force value of slurries in the described absorption tower of expression receiving from each pressure unit (11,12,13);
Described measuring method comprises the following steps:
S1: described in each, pressure unit is measured respectively the pressure value P of the slurries of described absorption tower (10) correspondence position
1, P
2;
S2: described controller is according to formula
calculate the average density ρ of two slurries between pressure unit
1,2, according to formula
calculate the liquid level H on absorption tower, wherein Η
1and Η
2be respectively the height of installation site of first pressure unit and the height of the installation site of second pressure unit, Δ Η is the distance between liquid level in the installation site of second pressure unit and described absorption tower.
9. utilize the liquid level emasuring device on absorption tower to measure a method for liquid level of slurry in absorption tower, it is characterized in that: described liquid level emasuring device comprises:
N pressure unit (11,12,13), it is upper that this n pressure unit (11,12,13) is arranged on described absorption tower (10) at each interval along short transverse, and for detection of the force value of slurries in described absorption tower, n is greater than 2 natural number; With
Controller, this controller respectively with a described n pressure unit (11,12,13) be electrically connected to, for calculate the liquid level of slurries in described absorption tower according to the electric signal of the force value of slurries in the described absorption tower of expression receiving from each pressure unit (11,12,13);
Described measuring method comprises the following steps:
S1:n described pressure unit measured respectively the pressure value P of the slurries of the interior correspondence position in described absorption tower (10)
1, P
2p
n-1, P
n;
S2: described controller is according to formula
calculate the average density ρ of the slurries between any two adjacent pressure units
n-1, n, and according to the average density of described slurries, calculate the average density of the slurries of absorption tower (10) inner height on n pressure unit setting height(from bottom)
according to formula
calculate the liquid level H on absorption tower, wherein, Η
nbe the height of the installation site of n pressure unit, the distance in the installation site that Δ Η is n pressure unit and described absorption tower between liquid level.
10. method according to claim 8 or claim 9, it is characterized in that, described absorption tower (10) comprises run-down pipe, described run-down pipe comprises the first pipe (16) and the second pipe (15), described the first pipe (16) is drawn and is extended upward from the sidewall of described absorption tower (10), and the position that described the first pipe (16) is connected in described absorption tower (10) is not higher than the mxm. of the level allowance scope of the interior slurries in described absorption tower (10); Described the second pipe (15) is communicated with the described first sidewall of managing (16) and to downward-extension; The liquid level emasuring device on described absorption tower also comprises the guide wave radar liquid level gauge (14) being electrically connected to described controller, and this guide wave radar liquid level gauge (14) is arranged on the top downward of described the first pipe (16);
Described method also comprises, described guide wave radar liquid level gauge (14) is measured the distance h of the liquid level of slurries in its installation site and absorption tower, and this measured value is sent to described controller, and described controller is according to formula H
1=H
guide wave radar liquid level gauge-h calculates the liquid level of slurries in absorption tower, wherein H
guide wave radar liquid level gaugesetting height(from bottom) for guide wave radar liquid level gauge (14).
11. methods according to claim 10, it is characterized in that, described method also comprises: described controller is by the level value H of slurries in the described absorption tower that utilizes described pressure unit to record and the level value H that utilizes slurries in the described absorption tower that described guide wave radar liquid level gauge (14) records
1make comparisons,
As H and H
1difference in preset range time, in described absorption tower, the liquid level of slurries is got described H;
As H and H
1difference while surpassing preset range, in described absorption tower, the liquid level of slurries is got described H
1.
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| CN109499345A (en) * | 2018-12-29 | 2019-03-22 | 中国联合工程有限公司 | The overflow of Limestone-gypsum Wet Flue Gas Desulfurization Process absorption tower defoams structure and its application method |
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| 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 |
| CN111298632A (en) * | 2020-03-03 | 2020-06-19 | 福建龙净环保股份有限公司 | Absorption tower for wet desulphurization and static pressure testing device thereof |
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| CN111298632A (en) * | 2020-03-03 | 2020-06-19 | 福建龙净环保股份有限公司 | Absorption tower for wet desulphurization and static pressure testing device thereof |
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