JPH02214522A - Desulfurization apparatus for gas - Google Patents
Desulfurization apparatus for gasInfo
- Publication number
- JPH02214522A JPH02214522A JP1032601A JP3260189A JPH02214522A JP H02214522 A JPH02214522 A JP H02214522A JP 1032601 A JP1032601 A JP 1032601A JP 3260189 A JP3260189 A JP 3260189A JP H02214522 A JPH02214522 A JP H02214522A
- Authority
- JP
- Japan
- Prior art keywords
- absorbent
- absorption tower
- tower
- valve
- storage tank
- 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
- 238000006477 desulfuration reaction Methods 0.000 title claims description 8
- 230000023556 desulfurization Effects 0.000 title claims description 8
- 230000002745 absorbent Effects 0.000 claims abstract description 75
- 239000002250 absorbent Substances 0.000 claims abstract description 75
- 238000010521 absorption reaction Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000008235 industrial water Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は吸収剤貯留設備及び吸収剤供給方式を改良した
ガスの脱硫装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a gas desulfurization device with improved absorbent storage equipment and absorbent supply system.
（従来の技術）
従来の排煙脱硫装置の例を第２図に示す、ボイラなどの
排ガスは、入口煙道１を通って冷却塔２に入る。冷却塔
２では、吸収液循環ポンプ８で循環されている吸収塔３
の下部に収容されている吸収液７の一部を冷却塔スプレ
ィ１０で噴霧しており、排ガスはここで増湿冷却されて
吸収塔３に至る。(Prior Art) An example of a conventional flue gas desulfurization apparatus is shown in FIG. 2. Exhaust gas from a boiler or the like enters a cooling tower 2 through an inlet flue 1. In the cooling tower 2, the absorption tower 3 is circulated by an absorption liquid circulation pump 8.
A part of the absorbing liquid 7 stored in the lower part of the absorbing liquid 7 is sprayed by a cooling tower spray 10, and the exhaust gas is humidified and cooled here before reaching the absorption tower 3.
吸収塔３内では、吸収液循環ポンプ８で循環されている
吸収液７が吸収塔スプレィ１１で充填物５に噴霧されて
いる。排ガスは充填物５を通過し吸収液７と接触して脱
硫され、デミスタ６で同伴ミストを除去し、出口煙道４
を経由して煙突へ排出される。吸収液７は塩濃度を一定
範囲の値にするため、吸収液循環ライン９から状況に応
じて所定量を抜出し、排水ライン１２で系外に排出され
る。吸収塔３内の吸収液７の液位は常に一定範囲のレベ
ルとなるように、工業用水１４が補給水スプレィ１５を
介して吸収塔３内に補給されている。また、吸収液７は
ｐＨ計１３で常にそのｐｉ値が検知され、一定範囲内の
値を保つように吸収剤供給ライン２１の自動弁２２がｐ
ｏ計の信号を受けて開閉し、吸収剤貯留槽１６からの吸
収剤１７の供給がコントロールされている。In the absorption tower 3, the absorption liquid 7 being circulated by the absorption liquid circulation pump 8 is sprayed onto the packing 5 by an absorption tower spray 11. The exhaust gas passes through the filling 5 and comes into contact with the absorbing liquid 7 to be desulfurized, and the entrained mist is removed by the demister 6, and the exhaust gas is sent to the outlet flue 4.
is discharged through the chimney. In order to maintain the salt concentration within a certain range, a predetermined amount of the absorbent liquid 7 is extracted from the absorbent circulation line 9 depending on the situation, and is discharged to the outside of the system through a drainage line 12. Industrial water 14 is replenished into the absorption tower 3 via a make-up water spray 15 so that the liquid level of the absorption liquid 7 in the absorption tower 3 is always within a certain range. In addition, the pH value of the absorption liquid 7 is constantly detected by a pH meter 13, and an automatic valve 22 of the absorbent supply line 21 is activated to maintain the value within a certain range.
It opens and closes in response to a signal from the o meter, and the supply of absorbent 17 from absorbent storage tank 16 is controlled.
吸収剤貯留槽１６は、通常、吸収塔３の近傍に独立して
設置され、吸収塔３への吸収剤１７の供給は吸収剤供給
ポンプ２０により吸収剤供給ライン２１を通して行なわ
れる。吸収剤供給ポンプ２０は連続運転されるため、自
動弁２２が閉時には吸収剤１７はリターンライン２３を
経て吸収剤貯留槽１６へ戻る。吸収剤１７は通常製造元
からタンクローリ−車２４で運搬され、吸収剤受入れラ
イン２９のコネクタ２６へタンクローリ−車２４のフレ
キシブルホース２５を接続し、タンクローリ−車２４が
もつ加圧装置でタンクローリ−車２４から吸収剤貯留槽
１６へ供給される。The absorbent storage tank 16 is normally installed independently near the absorption tower 3, and the absorption agent 17 is supplied to the absorption tower 3 through an absorbent supply line 21 by an absorbent supply pump 20. Since the absorbent supply pump 20 is continuously operated, the absorbent 17 returns to the absorbent storage tank 16 via the return line 23 when the automatic valve 22 is closed. The absorbent 17 is usually transported by a tank truck 24 from the manufacturer, and the flexible hose 25 of the tank truck 24 is connected to the connector 26 of the absorbent receiving line 29, and the tank truck 24 is transported by the pressurizing device of the tank truck 24. from there to the absorbent storage tank 16.
吸収剤貯留槽１６には貯留量を把握するためにレベル計
１９が具備されており、また水酸化マグネシウムなどの
沈降性の高い吸収剤を用いる場合には攪拌機１８を装備
する。吸収剤受入れライン２９には、閉止弁２７、逆止
弁２８が具備されている。また、沈降性の高い吸収剤の
場合には工業用水が供給されるパージライン３０を吸収
剤受入れライン２９へ接続し、吸収剤受入れ終了後、パ
ージ弁３１を開は工業用水１４によって吸収剤受入れラ
イン２９に残った吸収剤を吸収剤貯留槽１６に押込むよ
うになっている。The absorbent storage tank 16 is equipped with a level meter 19 to check the storage amount, and is also equipped with a stirrer 18 when using an absorbent with high sedimentation properties such as magnesium hydroxide. The absorbent receiving line 29 is equipped with a shutoff valve 27 and a check valve 28 . In addition, in the case of an absorbent with a high sedimentation property, the purge line 30 to which industrial water is supplied is connected to the absorbent receiving line 29, and after receiving the absorbent, the purge valve 31 is opened and the absorbent is received by the industrial water 14. The absorbent remaining in the line 29 is pushed into the absorbent storage tank 16.
上記従来の排煙脱硫装置では、吸収剤貯留槽ならびに吸
収剤供給設備は吸収塔と分離独立して設置しなければな
らず、そのためのスペースを必要とする。また敷地のせ
まい場合には、吸収塔に遠く離れて設宣せざるを得ない
ケースも多く、ポンプ容量、配管設備の増大など、経済
的なロスが大きい。In the conventional flue gas desulfurization equipment described above, the absorbent storage tank and the absorbent supply equipment must be installed separately and independently from the absorption tower, which requires space. In addition, if the site is small, there are many cases where the absorption tower has to be built far away, resulting in large economic losses such as increased pump capacity and piping equipment.
本発明は、上記の従来の装置に欠点を解消しようとする
ものである。The present invention seeks to overcome the drawbacks of the above-mentioned conventional devices.
本発明のガスの脱硫装置は、吸収剤貯留槽を吸収塔の上
側に配置して両者を一体化し、両者間を連絡する弁を備
えた吸収剤供給ラインを設け、更に、吸収塔内の吸収剤
のｐＨを検出しこれに基づいて上記吸収剤供給ラインの
弁を制御するｐｉ計を設けた。In the gas desulfurization equipment of the present invention, an absorbent storage tank is placed above the absorption tower to integrate the two, an absorbent supply line equipped with a valve communicating between the two is provided, and an absorbent storage tank is provided above the absorption tower. A pi meter was provided to detect the pH of the agent and control the valve in the absorbent supply line based on this.
吸収塔内の吸収剤のｐＨ値が一定範囲より変動すると、
ｐＨ計の信号によって吸収剤供給ラインの弁が開かれる
。開弁が開かれると、吸収剤貯留槽内の吸収剤は動によ
って吸収剤供給ライン内を流下して吸収塔へ供給される
。このために、本発明では吸収剤供給のためのポンプ設
備を必要とせず、またその配管設備も簡略化される。When the pH value of the absorbent in the absorption tower fluctuates from a certain range,
The pH meter signal opens the valve in the absorbent supply line. When the valve is opened, the absorbent in the absorbent storage tank flows down the absorbent supply line due to the movement and is supplied to the absorption tower. For this reason, the present invention does not require pump equipment for supplying the absorbent, and its piping equipment is also simplified.
本発明の一実施例を第１図によって説明する。 An embodiment of the present invention will be described with reference to FIG.
第“１図において、第２図に示される従来の装置と同一
の部分は同一の符号で示されており、その説明を省略す
る。In FIG. 1, the same parts as those of the conventional device shown in FIG. 2 are designated by the same reference numerals, and their explanation will be omitted.
本実施例では、吸収塔３の上部に、排気筒４を内壁に吸
収塔３の上壁を底壁とした密閉され吸収塔３と一体をな
す吸収剤貯留槽１１７が設けられ、同吸収剤貯留槽１１
７は下方に延びる吸収剤供給ライン１２１によって吸収
塔３の充填物５の下方に接続されている。同吸収剤供給
ライン１２１には、吸収塔内の吸収液のｐＨを検出する
ｐｉ計１３によって制御される自動側２２が設けられて
いる。また、１０５は排気筒４に接続された出口煙道、
１１８は吸収剤貯留槽内の吸収液、１１９は吸収剤貯留
槽１１７内の吸収剤の攪拌機、１２０は吸収剤貯留槽１
１７のレベル計である。In this embodiment, an absorbent storage tank 117 is provided in the upper part of the absorption tower 3 and is sealed and integrated with the absorption tower 3, with the exhaust pipe 4 as the inner wall and the upper wall of the absorption tower 3 as the bottom wall. Storage tank 11
7 is connected below the packing 5 of the absorption tower 3 by an absorbent supply line 121 extending downward. The absorbent supply line 121 is provided with an automatic side 22 that is controlled by a pi meter 13 that detects the pH of the absorption liquid in the absorption tower. Further, 105 is an outlet flue connected to the exhaust pipe 4;
118 is the absorbent liquid in the absorbent storage tank, 119 is the absorbent agitator in the absorbent storage tank 117, and 120 is the absorbent storage tank 1.
17 level meters.
以上のように構成された本実施例において、排ガスが入
口煙道１から冷却塔２．吸収塔３を通って排気筒４へ排
出れ、その間に吸収液によって脱硫されること、タンク
ローリ２４によって吸収液が吸収剤貯留槽に供給される
こと等は上記第２図に示す装置と全く同様である。In this embodiment configured as described above, exhaust gas flows from the inlet flue 1 to the cooling tower 2. The apparatus is exactly the same as the apparatus shown in FIG. 2 above, in that the absorbent is discharged through the absorption tower 3 to the exhaust pipe 4 and is desulfurized by the absorbent liquid during that time, and that the absorbent liquid is supplied to the absorbent storage tank by the tank truck 24. It is.
本実施例における吸収剤貯留槽１１７は、吸収塔３の上
部に設けられており、両者間は上下方向へ延びる吸収剤
供給ライン１２１によって連絡されているために、ｐＨ
計１３の信号を受けて自動弁１２２が開くと、吸収剤貯
留槽１１７内の吸収剤は動によって自然落下して吸収塔
３内へ供給される。The absorbent storage tank 117 in this embodiment is provided at the upper part of the absorption tower 3, and the two are connected by an absorbent supply line 121 extending in the vertical direction.
When the automatic valve 122 opens in response to a total of 13 signals, the absorbent in the absorbent storage tank 117 naturally falls due to movement and is supplied into the absorption tower 3.
従って、本実施例では、吸収剤供給のためのポンプ設備
が不要となり、またその配管設備も簡略化される。Therefore, in this embodiment, pump equipment for supplying the absorbent is not required, and the piping equipment thereof is also simplified.
また、吸収剤貯留槽１１７を吸収塔３の上側に設置する
ことによって、所要のスペースを減少させることができ
る。Further, by installing the absorbent storage tank 117 above the absorption tower 3, the required space can be reduced.
本発明は次の効果を奏することができる。 The present invention can have the following effects.
（１）吸収剤貯留槽を設置するための専有スペースが不
要となり、このための用地の有効利用又は狭い敷地での
ガス脱硫装置の設置が可能となる、など経済的効果が高
い。(1) There is no need for a dedicated space for installing an absorbent storage tank, and there are high economic effects such as effective use of land for this purpose or the ability to install a gas desulfurization device on a narrow site.
（２）吸収剤供給ポンプ設備を省略することができ、ま
た吸収剤供給配管設備を簡略化することができるために
、設備費が低減するとともに、トラブル要因も減少し、
運転上の信転性を向上させることができる。(2) Since the absorbent supply pump equipment can be omitted and the absorbent supply piping equipment can be simplified, equipment costs are reduced and the causes of trouble are also reduced.
Operation reliability can be improved.
第１図は本発明の一実施例の系統図、第２図は従来の排
煙脱硫装置の系統図である。
ｌ・・・人口煙道、 ２・・・冷却塔３・・・
吸収塔、 ４・・・排気筒。
５・・・充填物、 ６・・・デミスタ。
７・・・吸収液、 ８・・・吸収液循環ポン
プ。
１０・・・冷却塔スプレィ、１１・・・吸収塔スプレィ
。
１３・・・ρ１１計、１１７・・・吸収剤貯留槽。
１１８・・・吸収剤、１２２・・・自動弁。
２４・・・タンクローリ−車
２９・・・吸収剤受入れライン。FIG. 1 is a system diagram of an embodiment of the present invention, and FIG. 2 is a system diagram of a conventional flue gas desulfurization apparatus. l...Artificial flue, 2...Cooling tower 3...
Absorption tower, 4...exhaust stack. 5...Filling material, 6...Demister. 7...Absorption liquid, 8...Absorption liquid circulation pump. 10... Cooling tower spray, 11... Absorption tower spray. 13...ρ11 total, 117...absorbent storage tank. 118...Absorbent, 122...Automatic valve. 24...tank truck 29...absorbent receiving line.
Claims (1)
、両者間を連絡する弁を備えた吸収剤供給ラインを設け
、更に、吸収塔内の吸収剤のｐＨを検出しこれに基づい
て上記吸収剤供給ラインの弁を制御するｐＨ計を設けた
ことを特徴とするガスの脱硫装置。An absorbent storage tank is placed above the absorption tower to integrate the two, an absorbent supply line with a valve is provided to communicate between the two, and the pH of the absorbent in the absorption tower is detected and based on this. A gas desulfurization apparatus characterized in that a pH meter is provided to control a valve of the absorbent supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1032601A JPH02214522A (en) | 1989-02-14 | 1989-02-14 | Desulfurization apparatus for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1032601A JPH02214522A (en) | 1989-02-14 | 1989-02-14 | Desulfurization apparatus for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02214522A true JPH02214522A (en) | 1990-08-27 |
Family
ID=12363384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1032601A Pending JPH02214522A (en) | 1989-02-14 | 1989-02-14 | Desulfurization apparatus for gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02214522A (en) |
-
1989
- 1989-02-14 JP JP1032601A patent/JPH02214522A/en active Pending
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