JPS63160927U - - Google Patents
Info
- Publication number
- JPS63160927U JPS63160927U JP5345887U JP5345887U JPS63160927U JP S63160927 U JPS63160927 U JP S63160927U JP 5345887 U JP5345887 U JP 5345887U JP 5345887 U JP5345887 U JP 5345887U JP S63160927 U JPS63160927 U JP S63160927U
- Authority
- JP
- Japan
- Prior art keywords
- amount
- absorbent
- slurry
- signal
- absorption tower
- 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
- 230000002745 absorbent Effects 0.000 claims description 15
- 239000002250 absorbent Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 238000006477 desulfuration reaction Methods 0.000 claims description 7
- 230000023556 desulfurization Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 3
- 239000003546 flue gas Substances 0.000 claims 3
- 239000010440 gypsum Substances 0.000 claims 2
- 229910052602 gypsum Inorganic materials 0.000 claims 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 1
- 235000019738 Limestone Nutrition 0.000 claims 1
- 235000011941 Tilia x europaea Nutrition 0.000 claims 1
- 239000006227 byproduct Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 239000004571 lime Substances 0.000 claims 1
- 239000006028 limestone Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Treating Waste Gases (AREA)
Description
第１図は、本考案の一実施態様を示す系統図で
ある。また第２図は本考案の方法におけるＳＯ２
負荷と吸収塔循環スラリー中吸収剤濃度の関係を
示す図であり、第３図はＰＨ偏差と演算比率の関
係を示す図である。第４図は、従来技術による制
御方法を示す系統図である。
Ａ：ＳＯ２を含む排ガス、Ｂ：清浄排ガス、Ｃ
：吸収剤スラリー、１，２７：ＳＯ２濃度検出器
、２，２５：ガス量検出器、２２：吸収塔、２４
，２６：ガス温度検出器、１１，２０：流量計、
１６：スラリー濃度測定器、３４：吸収塔循環ス
ラリー中の吸収剤濃度設定器、３８：脱硫率設定
器、４０：ＰＨ検出器、４１：ＰＨ設定器、１０
，１９：調節弁、９，１８：流量調節器、３，１
７，２８〜３３，３５〜３７，３９，４２〜４４
：演算器。
FIG. 1 is a system diagram showing one embodiment of the present invention. In addition, Figure 2 shows the SO 2 in the method of the present invention.
FIG. 3 is a diagram showing the relationship between the load and the absorbent concentration in the absorption tower circulating slurry, and FIG. 3 is a diagram showing the relationship between the PH deviation and the calculation ratio. FIG. 4 is a system diagram showing a control method according to the prior art. A: Exhaust gas containing SO 2 , B: Clean exhaust gas, C
: Absorbent slurry, 1, 27: SO 2 concentration detector, 2, 25: Gas amount detector, 22: Absorption tower, 24
, 26: gas temperature detector, 11, 20: flow meter,
16: Slurry concentration measuring device, 34: Absorbent concentration setting device in absorption tower circulating slurry, 38: Desulfurization rate setting device, 40: PH detector, 41: PH setting device, 10
, 19: Control valve, 9, 18: Flow rate regulator, 3, 1
7, 28-33, 35-37, 39, 42-44
: Arithmetic unit.
Claims (1)
石灰を含むスラリーを用いて処理しＳＯ２を吸収
除去するとともに石膏を副生する湿式石灰石膏法
排煙脱硫装置において、吸収塔入口ＳＯ２量と脱
硫率を検出して脱硫ＳＯ２量を演算し、該脱硫Ｓ
Ｏ２量の演算信号により吸収塔抜出しスラリー流
量を制御するとともに、吸収塔循環スラリー中の
吸収剤濃度を制御する設定器からの信号と前記脱
硫ＳＯ２量からの信号により吸収塔循環スラリー
中の吸収剤濃度を一定に維持するために必要な吸
収剤量を演算して、所定の脱硫率が達成されてい
る場合には、吸収塔循環スラリーＰＨ設定器から
の信号と吸収塔循環スラリーＰＨ検出器からの信
号との差を演算して該演算信号と前記吸収剤量演
算信号とを乗じることにより吸収塔循環スラリー
ＰＨを設定値に維持するに必要な吸収剤量を演算
し、該吸収剤量の演算信号により吸収剤スラリー
供給量を制御し、一方、所定の脱硫率を下廻る場
合には、前記脱硫ＳＯ２量と吸収塔循環スラリー
中の吸収剤濃度を一定に維持するに必要な吸収剤
量を加算して該吸収剤量の演算信号により吸収剤
スラリー供給量を制御するようにしたことを特徴
とする湿式排煙脱硫装置の制御装置。 In a wet lime-gypsum method flue gas desulfurization equipment that processes flue gas containing SO 2 using limestone or lime-containing slurry as an absorbent to absorb and remove SO 2 and produce gypsum as a by-product, the amount of SO 2 at the absorption tower inlet and desulfurization are determined. The amount of desulfurized SO2 is calculated by detecting the desulfurized SO2 rate.
The flow rate of the slurry withdrawn from the absorption tower is controlled by the calculation signal of the O2 amount, and the flow rate of the slurry in the absorption tower circulation is controlled by the signal from the setting device that controls the absorbent concentration in the absorption tower circulating slurry and the signal from the desulfurization SO2 amount. Calculate the amount of absorbent required to maintain a constant absorbent concentration, and if the specified desulfurization rate is achieved, a signal from the absorber circulating slurry PH setting device and absorber circulating slurry PH detection The amount of absorbent required to maintain the absorber circulation slurry PH at the set value is calculated by calculating the difference between the signal from the absorber and the absorbent amount calculation signal and multiplying the calculated signal by the absorbent amount calculation signal. The amount of absorbent slurry supplied is controlled by the amount calculation signal, and when the desulfurization rate is below a predetermined value, the amount of desulfurized SO 2 and the absorbent concentration in the absorption tower circulation slurry are maintained constant. 1. A control device for a wet flue gas desulfurization equipment, characterized in that the amount of absorbent slurry is controlled by adding the amount of absorbent and using a calculated signal of the amount of absorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5345887U JPS63160927U (en) | 1987-04-10 | 1987-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5345887U JPS63160927U (en) | 1987-04-10 | 1987-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63160927U true JPS63160927U (en) | 1988-10-20 |
Family
ID=30879539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5345887U Pending JPS63160927U (en) | 1987-04-10 | 1987-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63160927U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61259732A (en) * | 1985-05-13 | 1986-11-18 | Mitsubishi Heavy Ind Ltd | Apparatus for controlling ph of absorbing tower |
-
1987
- 1987-04-10 JP JP5345887U patent/JPS63160927U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61259732A (en) * | 1985-05-13 | 1986-11-18 | Mitsubishi Heavy Ind Ltd | Apparatus for controlling ph of absorbing tower |
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