JPS61187229U - - Google Patents
Info
- Publication number
- JPS61187229U JPS61187229U JP7047585U JP7047585U JPS61187229U JP S61187229 U JPS61187229 U JP S61187229U JP 7047585 U JP7047585 U JP 7047585U JP 7047585 U JP7047585 U JP 7047585U JP S61187229 U JPS61187229 U JP S61187229U
- Authority
- JP
- Japan
- Prior art keywords
- absorbent
- flow rate
- output signal
- absorption tower
- detector
- 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.)
- Granted
Links
- 239000002250 absorbent Substances 0.000 claims description 9
- 230000002745 absorbent Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims 2
- 238000006477 desulfuration reaction Methods 0.000 claims 1
- 230000023556 desulfurization Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000003002 pH adjusting agent Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
Landscapes
- Treating Waste Gases (AREA)
Description
第１図は本考案の実施例における吸収塔ｐＨ制
御装置の系統図、第２図は本考案の実施例におけ
る吸収塔ｐＨ制御装置の関数演算器の出力特性図
、第３図は従来のｐＨ制御装置を用いた場合の高
速負荷上昇時の循環液ｐＨ及び出口ＳＯ２濃度の
変化を示す特性図、第４図は本考案の実施例にお
けるｐＨ制御装置を用いた場合の高速負荷上昇時
の循環液ｐＨ及び出口ＳＯ２濃度の変化を示す特
性図、第５図は従来の吸収塔ｐＨ制御装置の系統
図、第６図は負荷と循環液中の残留ＣａＣＯ３量
との関係を循環液のｐＨをパラメータとして示す
特性図である。
１……吸収塔、２……処理ガス導入ダクト、３
……処理ガス、４……タンク、５……循環液、６
……循環ポンプ、７……循環配管、８……排気ダ
クト、９……流量検出器、１０……流量調整弁、
１１……吸収剤供給配管、１２……移送配管、１
３……ｐＨ検出器、１４……ｐＨ調節器、１５…
…吸収剤流量調節器、２１……関数演算器、２２
……加算器。
Fig. 1 is a system diagram of the absorption tower pH control device in an embodiment of the present invention, Fig. 2 is an output characteristic diagram of the function calculator of the absorption tower pH control device in the embodiment of the present invention, and Fig. 3 is a diagram of the conventional pH control device. A characteristic diagram showing changes in circulating fluid pH and outlet SO 2 concentration during a high-speed load increase when using a control device. Figure 4 is a characteristic diagram showing changes in circulating fluid pH and outlet SO 2 concentration during a high-speed load increase when using a pH control device according to an embodiment of the present invention. Characteristic diagram showing changes in circulating fluid pH and outlet SO 2 concentration. Figure 5 is a system diagram of a conventional absorption tower pH control device. Figure 6 shows the relationship between load and residual CaCO 3 amount in circulating fluid. FIG. 3 is a characteristic diagram showing the pH of as a parameter. 1... Absorption tower, 2... Processing gas introduction duct, 3
... Processing gas, 4 ... Tank, 5 ... Circulating fluid, 6
... Circulation pump, 7 ... Circulation piping, 8 ... Exhaust duct, 9 ... Flow rate detector, 10 ... Flow rate adjustment valve,
11...Absorbent supply piping, 12...Transfer piping, 1
3...pH detector, 14...pH regulator, 15...
...Absorbent flow rate regulator, 21...Function calculator, 22
...Adder.
Claims (1)
入し、吸収剤を含有し、吸収塔内を循環する循環
液と接触させて脱硫する脱硫プラントにおいて、
前記循環液のｐＨを検出するｐＨ検出器と、前記
ｐＨ検出器の出力信号とボイラデマンド信号とを
入力し、吸収剤流量補正信号を出力するｐＨ調節
器と、前記ｐＨ検出器の出力信号に応じて２値信
号を出力する関数演算器と、前記ｐＨ調節器の出
力信号と前記関数演算器の出力信号とを入力し、
加算演算する加算器と、前記吸収塔に供給する吸
収剤流量を検出する吸収剤流量検出器と、前記加
算器の出力信号と前記吸収剤流量検出器の出力信
号とを入力して吸収剤調節弁の開度を調節する吸
収剤流量調節器とを具備したことを特徴とする吸
収塔ｐＨ制御装置。 In a desulfurization plant, a process gas containing sulfur dioxide gas is introduced into an absorption tower and is desulfurized by contacting with a circulating liquid containing an absorbent and circulating within the absorption tower.
a pH detector that detects the pH of the circulating fluid; a pH regulator that inputs the output signal of the pH detector and the boiler demand signal and outputs an absorbent flow rate correction signal; a function calculator that outputs a binary signal in response to the output signal of the pH adjuster and the output signal of the function calculator;
An adder that performs addition operations, an absorbent flow rate detector that detects the flow rate of absorbent supplied to the absorption tower, and absorbent adjustment by inputting the output signal of the adder and the output signal of the absorbent flow rate detector. An absorption tower pH control device comprising an absorbent flow rate regulator that adjusts the opening degree of a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7047585U JPH0243473Y2 (en) | 1985-05-13 | 1985-05-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7047585U JPH0243473Y2 (en) | 1985-05-13 | 1985-05-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61187229U true JPS61187229U (en) | 1986-11-21 |
| JPH0243473Y2 JPH0243473Y2 (en) | 1990-11-19 |
Family
ID=30607081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7047585U Expired JPH0243473Y2 (en) | 1985-05-13 | 1985-05-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243473Y2 (en) |
-
1985
- 1985-05-13 JP JP7047585U patent/JPH0243473Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0243473Y2 (en) | 1990-11-19 |
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