JPH0369066B2 - - Google Patents
Info
- Publication number
- JPH0369066B2 JPH0369066B2 JP1021584A JP1021584A JPH0369066B2 JP H0369066 B2 JPH0369066 B2 JP H0369066B2 JP 1021584 A JP1021584 A JP 1021584A JP 1021584 A JP1021584 A JP 1021584A JP H0369066 B2 JPH0369066 B2 JP H0369066B2
- Authority
- JP
- Japan
- Prior art keywords
- concentration
- slurry
- caso
- caco
- air
- 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.)
- Expired
Links
- 239000002002 slurry Substances 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 8
- 230000000717 retained effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【発明の詳細な説明】
〔本発明の技術分野〕
本発明は、湿式石灰法排煙脱硫装置における吸
収液スラリーなどのCaCO3並びにCaSO3もしく
はそのいずれかを含有するスラリー中のCaCO3
並びにCaSO3濃度を連続的に測定する方法に関す
る。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for reducing CaCO 3 in a slurry containing CaCO 3 and/or CaSO 3 , such as an absorbent slurry in a wet lime method flue gas desulfurization equipment .
The present invention also relates to a method for continuously measuring CaSO 3 concentration.
〔従来のCaCO3濃度・CaSO3濃度連続測定手段〕
従来のCaCO3並びにCaSO3濃度を連続的に測
定する手段としては、CaCO3及びCaSO3もしく
はいずれかを含有するスラリーを外気と遮断した
撹拌式連続反応器内で塩酸もしくは硫酸と反応さ
せ、下記反応によつてCaCO3並びにCCaSO3を
各々CO2及びSO2となし、
（HCl）CaCO3＋2HCl
→CaCl2＋H2O＋CO2↑ ……(1)
CaSO3＋2HCl→CaCl2＋H2O＋SO2↑ ……(2)
（H2SO4）CaCO3＋H2SO4
→CaSO4＋H2O＋CO2↑ ……(3)
CaSO3＋H2SO4→CaSO4＋H2O＋SO2↑
……(4)
これを反応液中に空気を吹き込み抜気し、抜気
ガス中のCO2並びにSO2量を測定してスラリー中
に含まれるCaCO3並びにCaSO3着度を演算によ
つて算出するしくみとなつている。[Conventional means for continuously measuring CaCO 3 concentration and CaSO 3 concentration] Conventional means for continuously measuring CaCO 3 and CaSO 3 concentrations include stirring a slurry containing CaCO 3 and/or CaSO 3 while shielding it from the outside air. React with hydrochloric acid or sulfuric acid in a continuous reactor to convert CaCO 3 and CCaSO 3 into CO 2 and SO 2 respectively, (HCl) CaCO 3 + 2HCl → CaCl 2 + H 2 O + CO 2 ↑ ……( 1) CaSO 3 +2HCl→CaCl 2 +H 2 O+SO 2 ↑ ……(2) (H 2 SO 4 ) CaCO 3 +H 2 SO 4 →CaSO 4 +H 2 O+CO 2 ↑ ……(3) CaSO 3 +H 2 SO 4 → CaSO4 ＋ H2O ＋ SO2 ↑
...(4) Air is blown into the reaction solution to evacuate it, the amount of CO 2 and SO 2 in the evacuated gas is measured, and the degree of CaCO 3 and CaSO 3 contained in the slurry is calculated. There is a system for calculating this.
この従来の測定手段を第１図に基づいて説明す
ると、第１図において、CaCO3及びCaSO3を含
有する試料スラリーＡは定量ポンプ１で採取さ
れ、反応容器５内の滞留液６の温度が所定温度と
なるように同滞留液６の温度を温度検出器４で検
出し、温度調節計３からの信号で熱源制御されて
いる加熱器２を経由して昇温後70℃以上にして反
応容器５へ供給される。同反応容器５の滞留液６
はPH検出器１４でPHを検出しPH調節計１５からの
信号で微量ポンプ１２を制御し、硫酸（もしくは
塩酸）Ｃを反応容器５へ注入して３以下の所要PH
となるようにPH制御されており、さらにその際前
述した反応式(3)〜(4)（もしくは(1)〜(2)）に従つて
発生するCO2及びSO2を円滑に抜気するために、
流量調節計１１で所要流量に制御されている空気
Ｂの一部もしくは全部は分配弁２２を操作して流
量指示計１７並びに空気吹込み管８を介して滞留
液６中に吹込むと同反応容器５内の滞留液６中の
固形分を沈降させないためにシール材９を介して
モータ１０で駆動する撹拌機７によつて撹拌され
ている。次に定量ポンプ１からの試料スラリーＡ
の供給による滞留液６の液量の増加分はオーバー
フロー管２３から液封器１３に排出され、同液封
器１３では反応容器５内のCO2及びSO2を含有す
る混合ガスＥがオーバーフロー液に同伴して洩れ
出さないように反応容器５の内圧に打ち勝つだけ
の液深となるようにオーバーフロー管２３の先端
を液封器１３内の液中に浸漬されており、同液封
器１３に流入するオーバーフロー液の余剰液量は
廃液Ｄとなつて排出される。反応式(3)〜(4)（もし
くは(1)〜(2)）に従つて発生したCO2もしくはSO2
並びに空気吹込管８からの空気と蒸発水分との混
合ガスＥは、反応容器５をバイパスしている空気
１６と合流したのち排気Ｆとして放出されるが、
その排気Ｆの一部は除湿器２４で含有している水
分をドレンＨとして除去されたのち空気ポンプ１
８で吸引されCO2分析計１９並びにSO2分析計２
５に送られ、同CO2分析計１９並びにSO2分析計
２５で各々CO2濃度並びにSO2濃度が測定されて
のち排気Ｇとして放出される。CO2分析計１９並
びにSO2分析計２５での各々の測定信号はスラリ
ー中のCaCO3濃度並びにCaSO3濃度を算出する
ためのCaCO3演算器２０並びにCaSO3演算器２
６に送られ、スラリー採取流量信号＊２及び空気
流量信号＊１の各値と共に演算処理されスラリー
中のCaCO3及びCaSO3の濃度を次式で算出し、
CaCO3濃度は濃度指示計２１でまたCaSO3濃度
は濃度指示計２７で各々指示させている。 This conventional measuring means will be explained based on FIG . 1. In FIG. The temperature of the retained liquid 6 is detected by a temperature detector 4 so as to reach a predetermined temperature, and the temperature is raised to 70°C or higher via a heater 2 whose heat source is controlled by a signal from a temperature controller 3, and then the reaction is carried out. It is supplied to the container 5. Remaining liquid 6 in the same reaction container 5
The pH is detected by the PH detector 14, and the trace pump 12 is controlled by the signal from the PH controller 15, and sulfuric acid (or hydrochloric acid) C is injected into the reaction vessel 5 to maintain the required pH of 3 or less.
The pH is controlled so that the CO 2 and SO 2 generated according to the reaction equations (3) to (4) (or (1) to (2)) described above are smoothly vented. for,
When a part or all of the air B whose flow rate is controlled to the required flow rate by the flow rate controller 11 is blown into the retained liquid 6 through the flow rate indicator 17 and the air blowing pipe 8 by operating the distribution valve 22, the same reaction occurs. In order to prevent the solid content in the retained liquid 6 in the container 5 from settling, the liquid is stirred by a stirrer 7 driven by a motor 10 via a sealing material 9. Next, sample slurry A from metering pump 1
The increase in the amount of the retained liquid 6 due to the supply of is discharged from the overflow pipe 23 to the liquid seal 13, where the mixed gas E containing CO 2 and SO 2 in the reaction vessel 5 flows into the overflow liquid. The tip of the overflow tube 23 is immersed in the liquid in the liquid seal 13 so that the liquid depth is deep enough to overcome the internal pressure of the reaction vessel 5 so that the liquid does not leak along with the liquid. The excess amount of overflow liquid flowing in becomes waste liquid D and is discharged. CO 2 or SO 2 generated according to reaction formulas (3) to (4) (or (1) to (2))
Also, the mixed gas E of air and evaporated water from the air blowing pipe 8 is released as exhaust gas F after combining with the air 16 bypassing the reaction vessel 5.
A part of the exhaust air F is removed by the dehumidifier 24 to remove moisture contained therein as a drain H, and then the air pump 1
CO 2 analyzer 19 and SO 2 analyzer 2
5, the CO 2 concentration and SO 2 concentration are measured by the CO 2 analyzer 19 and SO 2 analyzer 25, respectively, and then released as exhaust G. The measurement signals from the CO 2 analyzer 19 and the SO 2 analyzer 25 are transmitted to a CaCO 3 calculator 20 and a CaSO 3 calculator 2 for calculating the CaCO 3 concentration and CaSO 3 concentration in the slurry.
6 and is processed together with each value of the slurry sampling flow rate signal *2 and air flow rate signal *1 to calculate the concentration of CaCO 3 and CaSO 3 in the slurry using the following formula,
The CaCO 3 concentration is indicated by a concentration indicator 21, and the CaSO 3 concentration is indicated by a concentration indicator 27, respectively.
CaSO3濃度〔mol／〕＝
X1×Ｑ／（100−X1−X2）×22.4×Ｆ
CaCO3濃度〔mol／）＝
X2×Ｑ／（100−X1−X2）×22.4×Ｆ
X1：SO2濃度〔vol％〕
X2：CO2濃度〔vol％〕
Ｑ：抜き込み用と混合用各空気の合計流量
〔Nl／min〕
Ｆ：スラリー採取流量〔／min〕
〔上記従来の測定手段の欠点〕
ところで、上記従来の測定手段では、生成CO2
並びにSO2の反応液中からの抜気は、空気のみを
液中に浸漬した空気吹込み管から吹込んでいる。
このため、空気吹込み管の反応液浸漬部内壁に
CaCl2もしくはCaSO4の硬質スケールが生成し、
これが経時的に生長し、ついには吹込み管を閉塞
し抜気不能に陥いらせてしまう欠点を有してい
る。本発明者は、この従来手段でスラリー中の
CaCO3濃度及びCaSO3濃度を測定したところ、
第２図に示す結果を得た。この図から明らかなよ
うに、約12時間の連続測定経過後では急激に各濃
度が低下し、結局、従来手段では連続測定の可能
時間が約12時間であることが判明し、これ以上の
時間に於ける測定結果は、もはや信頼できるもの
ではないことが明らかとなつた。 CaSO 3 concentration [mol/] =
X 1 ×Q/(100−X 1 −X 2 )×22.4×F CaCO 3 concentration [mol/)=
X 2 × Q / (100−X 1 −X 2 ) × 22.4 × F X 1 : SO 2 concentration [vol%] Flow rate [Nl/min] F: Slurry collection flow rate [/min] [Disadvantages of the above conventional measuring means] By the way, with the above conventional measuring means, the generated CO 2
In addition, air is removed from the SO 2 reaction solution by blowing only air through an air blowing tube immersed in the solution.
For this reason, the inner wall of the reaction liquid immersion part of the air blowing tube
A hard scale of CaCl 2 or CaSO 4 is generated,
This has the disadvantage that it grows over time and eventually blocks the insufflation pipe, making it impossible to evacuate the air. The present inventor has discovered that using this conventional means,
When CaCO 3 concentration and CaSO 3 concentration were measured,
The results shown in FIG. 2 were obtained. As is clear from this figure, after approximately 12 hours of continuous measurement, each concentration rapidly decreases, and in the end, it was found that the possible time for continuous measurement with conventional means was approximately 12 hours, and that It became clear that the results of the measurements were no longer reliable.
そこで、本発明は、上記従来手段の欠点を解消
し、長時間にわたつてスラリー中のCaCO3濃度
及びCaSO3濃度あるいはそのいずれかの濃度を連
続的に測定することができる測定方法を提供する
ことを目的とする。
Therefore, the present invention solves the drawbacks of the conventional means described above and provides a measuring method that can continuously measure the CaCO 3 concentration and/or CaSO 3 concentration in a slurry over a long period of time. The purpose is to
そして、本発明は、上記目的を達成する手段と
して、従来手段の反応生成ガスであるCO2・SO2
の抜き出し用として使用する空気に、予め水を混
合し、この水と空気との混合物を撹拌式連続反応
容器内のスラリー中に吹き込む点にある。すなわ
ち、本発明は、CaCO3及びCaSO3あるいはその
いずれかを含有するスラリーを連続的に定量採取
し、これを外気と遮断された撹拌式連続反応容器
へ供給し、該容器内滞留液の増加分をオーバーフ
ロー管から液封器を介して系外に排出し、さら
に、該容器へ硫酸もしくは塩酸を加えてスラリー
中のCaCO3・CaSO3と反応させ、生成するCO2・
SO2を、該容器内のスラリー中に吹き込む空気に
同伴させて同容器外へ抜き出し、この抜き出しガ
スをさらに空気と混合し、混合ガス中のCO2濃
度・SO2濃度と上記スラリー採取量と上記吹き込
み空気並びに上記混合用空気の合計空気流量との
各値を用いて演算し、スラリー中のCaCO3濃
度・CaSO3濃度を算出するCaCO3及びCaSO3あ
るいはそのいずれかを含有するスラリー中の
CaCO3濃度・CaSO3濃度を連続的に測定する方
法に於いて、上記撹拌式連続反応容器内のスラリ
ー中に吹き込む空気に予め水を混合し、この水と
空気との混合物を同容器内のスラリー中に吹き込
むことを特徴とするスラリー中のCaCO3濃度・
CaSO3濃度の連続測定法である。
The present invention, as a means to achieve the above object, uses CO 2 / SO 2 which is a reaction product gas of conventional means.
Water is mixed in advance with the air used for extraction, and this mixture of water and air is blown into the slurry in the stirred continuous reaction vessel. That is, the present invention continuously collects a fixed amount of slurry containing CaCO 3 and/or CaSO 3 , supplies it to a stirred continuous reaction container that is isolated from the outside air, and increases the amount of liquid residing in the container. is discharged from the overflow tube to the outside of the system via a liquid seal, and then sulfuric acid or hydrochloric acid is added to the container to react with CaCO 3 and CaSO 3 in the slurry, resulting in CO 2 and
SO 2 is extracted from the container by being accompanied by air blown into the slurry in the container, and this extracted gas is further mixed with air, and the CO 2 concentration and SO 2 concentration in the mixed gas and the above slurry collection amount are calculated. Calculate the CaCO 3 concentration and CaSO 3 concentration in the slurry by calculating the total air flow rate of the above-mentioned blown air and the above-mentioned mixing air.
In the method of continuously measuring CaCO 3 concentration and CaSO 3 concentration, water is mixed in advance with the air blown into the slurry in the stirring type continuous reaction vessel, and this mixture of water and air is poured into the slurry in the same vessel. CaCO 3 concentration in the slurry, which is characterized by blowing into the slurry.
This is a continuous measurement method for CaSO 3 concentration.
以下、本発明を第３図に基づいて詳細に説明す
る。第３図に於いて、前記した従来の測定手段を
示す第１図と同一部分に同一付号が付与されてい
る。そこで、第１図と同一部分の説明を省略し、
異なるところについて説明すると、第３図におい
て、反応式(3)〜(4)（もしくは(1)〜(2)に従つて発生
するCO2及びSO2を円滑に抜気するために流量調
節計１１で所要流量に制御されている空気Ｂの一
部もしくは全部は分配弁２２を操作して流量指示
計１７を介してのち微量ポンプ２８によつて供給
される水（もしくは温水）Ｊと混合されてのち空
気吹込管８を介して滞留液６中に吹込まれてい
る。 Hereinafter, the present invention will be explained in detail based on FIG. In FIG. 3, the same parts as in FIG. 1 showing the conventional measuring means described above are given the same numbers. Therefore, the explanation of the same parts as in Fig. 1 is omitted,
To explain the difference, in Fig. 3, a flow controller is used to smoothly vent CO 2 and SO 2 generated according to reaction equations (3) to (4) (or (1) to (2)). A part or all of the air B whose flow rate is controlled at the required flow rate in step 11 is mixed with water (or hot water) J supplied by a micro-volume pump 28 through a flow rate indicator 17 by operating a distribution valve 22. It is then blown into the retained liquid 6 via the air blowing pipe 8.
このように本発明による空気と水（もしくは温
水）を混合して吹き込む方法としたことで空気吹
込み管８の滞留液浸漬部内壁は常に水（もしくは
温水）によつて保護されることとなり従来法にお
いてみられるスケール生成による不具合を理解す
ることができた。 By adopting the method of blowing a mixture of air and water (or hot water) according to the present invention, the inner wall of the immersed liquid part of the air blowing pipe 8 is always protected by water (or hot water), which is different from the conventional method. I was able to understand the problems caused by scale generation that occur in the method.
以下本発明の実施例をあげて、本発明をより詳
細に説明する。 EXAMPLES The present invention will be described in more detail below with reference to Examples.
〔実施例〕
第３図の態様をなす試験装置を下記条件にて操
作した結果、第４図に示す測定結果を得た。[Example] As a result of operating the test apparatus having the embodiment shown in FIG. 3 under the following conditions, the measurement results shown in FIG. 4 were obtained.
＜条件＞
スラリー中のCaSO3濃度：0.051mol／
スラリー中のCaCO3濃度：0.056mol／
スラリー採取流量 ：0.12／min
吹込空気流量 ：7Nl／min
反応温度設定 ：75℃
反応PH設定 ：２
全空気流量 ：20Nl／min
反応容器容量 ：１
混合水（温水）流量 ：0.01／min
第４図においてａ点では水を温水に切替え、ｂ
点では塩酸を硫酸に切替え、さらにｃ点では温水
を水に切替えた事を示す。この第４図から明らか
なように、120時間継続して測定してもスラリー
中のCaCO3濃度並びにCaSO3濃度に変化がみら
れなかつた。<Conditions> CaSO 3 concentration in slurry: 0.051 mol / CaCO 3 concentration in slurry: 0.056 mol / Slurry sampling flow rate: 0.12/min Blowing air flow rate: 7 Nl/min Reaction temperature setting: 75°C Reaction PH setting: 2 Total air Flow rate: 20Nl/min Reaction vessel capacity: 1 Mixed water (hot water) flow rate: 0.01/min In Figure 4, water is switched to hot water at point a, and b
Point c indicates that hydrochloric acid was switched to sulfuric acid, and point c indicates that hot water was switched to water. As is clear from FIG. 4, no change was observed in the CaCO 3 concentration and CaSO 3 concentration in the slurry even after continuous measurement for 120 hours.
本発明は、以上詳記したように、水と空気との
混合物を撹拌式連続反応容器内のスラリー中に吹
き込むようにしたものであるから、スケール生成
によるCaCO3濃度及びCaSO3濃度の測定精度低
下が防止でき、長時間にわたつて連続的に該濃度
を正確に測定することができる効果が生ずるもの
である。
As detailed above, in the present invention, a mixture of water and air is blown into the slurry in a stirring type continuous reaction vessel, so that the measurement accuracy of CaCO 3 concentration and CaSO 3 concentration due to scale formation is improved. This has the effect of preventing the concentration from decreasing and making it possible to accurately measure the concentration continuously over a long period of time.
第１図は従来の測定手段を説明するための図で
あり、第２図は従来の測定手段により測定した実
験結果を示す。第３図は本発明を説明するための
図であり、第４図は本発明の実施例である測定手
段で測定した実験結果を示す。
Ａ……試料スラリー、Ｂ……空気、Ｃ……硫酸
（もしくは塩酸）、Ｄ……廃液、Ｅ……混合ガス、
Ｆ……排気、Ｇ……排気、Ｈ……ドレン、Ｊ……
水（もしくは温水）、１……定量ポンプ、２……
加熱器、３……温度調節計、４……温度検出器、
５……反応容器、６……滞留液、７……撹拌機、
８……空気吹込み管、９……シール材、１０……
モータ、１１……流量調節計、１２……微量ポン
プ、１３……液封器、１４……PH検出器、１５…
…PH調節計、１６……空気、１７……流量指示
計、１８……空気ポンプ、１９……CO2分析計、
２０……CaCO3演算器、２１……濃度指示計、
２２……分配弁、２３……オーバーフロー管、２
４……除湿器、２５……SO2分析計、２６……
CaSO3演算器、２７……濃度指示計、２８……微
量ポンプ、＊１……空気流量信号、＊２……スラ
リー採取流量信号。
FIG. 1 is a diagram for explaining a conventional measuring means, and FIG. 2 shows experimental results measured by the conventional measuring means. FIG. 3 is a diagram for explaining the present invention, and FIG. 4 shows experimental results measured by a measuring means that is an embodiment of the present invention. A... Sample slurry, B... Air, C... Sulfuric acid (or hydrochloric acid), D... Waste liquid, E... Mixed gas,
F...Exhaust, G...Exhaust, H...Drain, J...
Water (or hot water), 1...metering pump, 2...
Heater, 3... Temperature controller, 4... Temperature detector,
5... Reaction container, 6... Remaining liquid, 7... Stirrer,
8...Air blowing pipe, 9...Sealing material, 10...
Motor, 11...Flow rate controller, 12...Minor pump, 13...Liquid seal, 14...PH detector, 15...
...PH controller, 16...Air, 17...Flow rate indicator, 18...Air pump, 19... CO2 analyzer,
20... CaCO 3 calculator, 21... Concentration indicator,
22... Distribution valve, 23... Overflow pipe, 2
4... Dehumidifier, 25... SO 2 analyzer, 26...
CaSO 3 computing unit, 27...concentration indicator, 28...trace pump, *1...air flow rate signal, *2...slurry sampling flow rate signal.
Claims (1)
含有するスラリーを連続的に定量採取し、これを
外気と遮断された撹拌式連続反応容器へ供給し、
該容器内滞留液の増加分をオーバーフロー管から
液封器を介して系外に排出し、さらに、該容器へ
硫酸もしくは塩酸を加えてスラリー中の
CaCO3・CaSO3と反応させ、生成するCO2・SO2
を、該容器内のスラリー中に吹き込む空気に同伴
させて同容器外へ抜き出し、この抜き出しガスを
さらに空気と混合し、混合ガス中のCO2濃度・
SO2濃度と上記スラリー採取量と上記吹き込み空
気並びに上記混合用空気の合計空気流量との各値
を用いて演算し、スラリー中のCaCO3濃度・
CaSO3濃度を算出するCaCO3及びCaSO3あるい
はそのいずれかを含有するスラリー中のCaCO3
濃度・CaSO3濃度を連続的に測定する方法に於い
て、上記撹拌式連続反応容器内のスラリー中に吹
き込む空気に予め水を混合し、この水と空気との
混合物を同容器内のスラリー中に吹き込むことを
特徴とするスラリー中のCaCO3濃度・CaSO3濃
度の連続測定法。1. Continuously and quantitatively sampling a slurry containing CaCO 3 and/or CaSO 3 and supplying it to a stirred continuous reaction vessel isolated from the outside air,
The increased amount of liquid remaining in the container is discharged from the overflow pipe to the outside of the system via a liquid seal, and sulfuric acid or hydrochloric acid is added to the container to remove the remaining liquid in the slurry.
CO 2 / SO 2 generated by reacting with CaCO 3 / CaSO 3
The CO 2 concentration in the mixed gas is
The CaCO 3 concentration in the slurry is calculated using the SO 2 concentration, the amount of slurry collected, and the total air flow rate of the blown air and mixing air.
CaCO 3 in slurry containing CaCO 3 and/or CaSO 3 to calculate CaSO 3 concentration
In the method of continuously measuring concentration/CaSO 3 concentration, water is mixed in advance with the air blown into the slurry in the stirring type continuous reaction vessel, and this mixture of water and air is injected into the slurry in the same vessel. A method for continuous measurement of CaCO 3 concentration and CaSO 3 concentration in slurry, which is characterized by blowing into slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021584A JPS60154157A (en) | 1984-01-25 | 1984-01-25 | Method for measuring continuously concentration of caco3 and concentration of caso3 in slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021584A JPS60154157A (en) | 1984-01-25 | 1984-01-25 | Method for measuring continuously concentration of caco3 and concentration of caso3 in slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60154157A JPS60154157A (en) | 1985-08-13 |
| JPH0369066B2 true JPH0369066B2 (en) | 1991-10-30 |
Family
ID=11744041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1021584A Granted JPS60154157A (en) | 1984-01-25 | 1984-01-25 | Method for measuring continuously concentration of caco3 and concentration of caso3 in slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60154157A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2549050B2 (en) * | 1993-01-27 | 1996-10-30 | 川崎重工業株式会社 | Flue gas desulfurization method and device |
| JP5020348B2 (en) * | 2010-03-31 | 2012-09-05 | 中国電力株式会社 | Calcium carbonate concentration measuring device |
| CN111781081A (en) * | 2020-06-18 | 2020-10-16 | 邯郸钢铁集团有限责任公司 | Pickling line waste hydrochloric acid concentration detection device and method |
-
1984
- 1984-01-25 JP JP1021584A patent/JPS60154157A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60154157A (en) | 1985-08-13 |
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