JPH05149506A - Feeding method for aqueous ammonia - Google Patents
Feeding method for aqueous ammoniaInfo
- Publication number
- JPH05149506A JPH05149506A JP31653691A JP31653691A JPH05149506A JP H05149506 A JPH05149506 A JP H05149506A JP 31653691 A JP31653691 A JP 31653691A JP 31653691 A JP31653691 A JP 31653691A JP H05149506 A JPH05149506 A JP H05149506A
- Authority
- JP
- Japan
- Prior art keywords
- ammonia
- flow rate
- pure water
- gas flow
- aqueous ammonia
- 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
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えばボイラプラント
の水質調整のために添加されるアンモニア注入方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for injecting ammonia, which is added for water quality control in a boiler plant, for example.
【０００２】[0002]
【従来の技術】一般に、アンモニア注入に際しては、そ
の注入量を正確に規定する必要があるため、通常は、所
定濃度のアンモニア水を所定量注入する方法が採用され
ている。図２は、このような方法を実施する装置を示す
説明図である。以下これについて簡単に説明する。2. Description of the Related Art In general, when injecting ammonia, it is necessary to accurately specify the injection amount. Therefore, a method of injecting a predetermined amount of ammonia water with a predetermined concentration is usually employed. FIG. 2 is an explanatory view showing an apparatus for carrying out such a method. This will be briefly described below.
【０００３】この種の装置は、基本的に、アンモニアガ
スの密閉溶解タンク１０と、アンモニアガス自動溶解装
置１２と、アンモニア水送液ポンプ１４と、その送液ポ
ンプモータ１４ａを制御する送液量自動制御装置１６と
から構成されている。そして、前記アンモニアガス自動
溶解装置１２は、純水供給配管１８に設けられている制
御弁１８ａと、アンモニアガス供給配管２０に設けられ
ている制御弁２０ａと、アンモニア水濃度計（通常は導
電率計）２２と、レベルスイッチ２４と、攪拌器２６用
のモータ２６ａと、およびこれらを制御する自動制御装
置２８とから構成されている。そこで、例えばタンク１
０内のアンモニア水のレベルが一定水準以下になると、
レベルスイッチ２４を介して自動制御装置２８が作動
し、これによりタンク１０内へ先ず制御弁１８ａを介し
て所定量の純水が流入し、次いで制御弁２０ａおよびア
ンモニア水濃度計２２を介して攪拌器２６の作動下にア
ンモニアガスが導入され、前記アンモニアガス自動溶解
装置１２には所定濃度のアンモニア水が生成、貯蔵され
る。従って、このような装置によれば、送液量自動制御
装置１６を介してアンモニア水送液ポンプ１４を所定時
間運転することにより、タンク１０から所定濃度のアン
モニア水が所定量だけプロセス系３０へ注入される。This type of apparatus basically has a closed dissolution tank 10 for ammonia gas, an automatic ammonia gas dissolution apparatus 12, an ammonia water feed pump 14, and a feed amount for controlling the feed pump motor 14a. It is composed of an automatic control device 16. The ammonia gas automatic dissolution apparatus 12 includes a control valve 18a provided in the pure water supply pipe 18, a control valve 20a provided in the ammonia gas supply pipe 20, an ammonia water concentration meter (usually conductivity). 22), a level switch 24, a motor 26a for the agitator 26, and an automatic control device 28 for controlling these. So, for example, tank 1
When the level of ammonia water in 0 falls below a certain level,
The automatic control device 28 is operated via the level switch 24, whereby a predetermined amount of pure water first flows into the tank 10 via the control valve 18a, and then is agitated via the control valve 20a and the ammonia water concentration meter 22. Ammonia gas is introduced under the operation of the vessel 26, and ammonia water having a predetermined concentration is produced and stored in the ammonia gas automatic dissolution apparatus 12. Therefore, according to such a device, by operating the ammonia water liquid feed pump 14 for a predetermined time via the liquid feed amount automatic control device 16, a predetermined amount of a predetermined amount of ammonia water from the tank 10 is transferred to the process system 30. Injected.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記従
来技術は、以下に述べるように構造が大型かつ複雑とな
るため、その改善が要望されていた。However, in the above-mentioned prior art, since the structure becomes large and complicated as described below, improvement thereof has been demanded.
【０００５】すなわち、先ず第１に、アンモニアガス溶
解タンク１０は、比較的多量のアンモニア水を常時貯蔵
するものであるので、通常３，０００リットル程度の容
量を必要とし、このため装置の大型化が避けられなかっ
た。次に、装置は２つの自動装置１２，１６を必要とす
るが、殊に前者すなわちアンモニアガス自動溶解装置
は、特に複雑な構成を有し、このため複雑化が避けられ
なかった。このように、前記従来技術は、構造が大型か
つ複雑となり、このためコストが上昇すると同時に信頼
性並びにメンテナンスの面において難点を有するもので
あった。That is, first of all, since the ammonia gas dissolving tank 10 always stores a relatively large amount of ammonia water, it usually requires a capacity of about 3,000 liters, which makes the apparatus large. Was unavoidable. The device then requires two automatic devices 12, 16, especially the former or ammonia gas automelter, which has a particularly complicated construction, so that complications are unavoidable. As described above, the conventional technique has a large structure and a complicated structure, which increases cost, and at the same time, has problems in reliability and maintenance.
【０００６】そこで、本発明の目的は、小型かつ簡単に
構成することができるアンモニア注入方法を提供するこ
とにある。Therefore, an object of the present invention is to provide a method of injecting ammonia which is small in size and simple in construction.
【０００７】[0007]
【課題を解決するための手段】先の目的を達成するため
に、本発明に係るアンモニア注入方法は、貯水タンクか
ら送液ポンプを介してプロセス系へ送水を行う純水送水
系に対し、質量流量調節形のガス流量調節器を介して所
定絶対量のアンモニアガスを流入させることにより、プ
ロセス系に所定量のアンモニアを注入することを特徴と
する。In order to achieve the above object, the ammonia injection method according to the present invention uses a mass ratio to a pure water supply system for supplying water from a water storage tank to a process system via a liquid supply pump. It is characterized in that a predetermined absolute amount of ammonia gas is introduced through a gas flow controller of a flow rate adjusting type to inject a predetermined amount of ammonia into the process system.
【０００８】この場合、ガス流量調節器は手動操作とす
るか、あるいは自動制御とすることができる。In this case, the gas flow rate controller can be manually operated or automatically controlled.
【０００９】[0009]
【作用】本発明のアンモニア注入方法においては、従来
技術の前述した方法と比較して、アンモニアガス溶解タ
ンク、アンモニアガス自動制御装置および送液量自動制
御装置が不要となる。なお、その代わりとして、貯水タ
ンクと質量流量調節形のガス流量調節器とを新たに必要
とするが、貯水タンクは純水供給配管との連絡を遮断す
る僅かに２００リットル程度の小型開放タンクであり、
またガス流量調節器は単体からなり、容易に手動操作す
ることができる。The ammonia injection method of the present invention does not require the ammonia gas dissolution tank, the ammonia gas automatic control device, and the liquid feed amount automatic control device, as compared with the above-described method of the prior art. As an alternative, a water storage tank and a mass flow rate control type gas flow rate controller are newly required. However, the water storage tank is a small open tank of only about 200 liters that blocks communication with the pure water supply pipe. Yes,
Further, the gas flow rate controller is a single unit and can be easily operated manually.
【００１０】従って、本発明によれば、装置が極めて小
型かつ簡単となり、価格が低減されると同時に信頼性を
向上し、しかもメンテナンスも容易化される。Therefore, according to the present invention, the apparatus is extremely small and simple, the cost is reduced, the reliability is improved, and the maintenance is facilitated.
【００１１】[0011]
【実施例】次に、本発明に係るアンモニア注入方法を、
これを実施する装置（図１）との関連において、以下図
面を参照しながら詳細に説明する。なお、説明の便宜
上、図２に示す従来の装置と同一の構成部分については
同一の参照符号を付し、その詳細な説明は省略する。EXAMPLES Next, the ammonia injection method according to the present invention will be described.
In connection with the apparatus for carrying out this (FIG. 1), a detailed description will be given below with reference to the drawings. For convenience of explanation, the same components as those of the conventional apparatus shown in FIG. 2 are designated by the same reference numerals, and detailed description thereof will be omitted.
【００１２】図１において、本発明方法を実施する装置
は、基本的に、純水供給配管１８からの純水を貯蔵する
ボールタップ４０ａ付き貯水タンク４０と、この貯水タ
ンク４０から送液ポンプ４２を介してプロセス系３０へ
送水される純水送水系４４に対してアンモニアガス供給
配管２０からのアンモニアガスを所定絶対量流入させる
質量流量調節形のガス流量調節器４６とから構成され
る。なお、ガス流量調節器４６からのアンモニアガス
は、実線で示す配管４８を介して送液ポンプ４２の入口
側に流入させるか、あるいは一点鎖線で示す配管５０を
介して出口側へ流入させることができる。また、本実施
例においては、ガス流量調節器４６および送液ポンプ４
２用のモータ４２ａに対して、自動制御装置５２が設け
られているが、これは必ずしも必要とするものではな
い。In FIG. 1, an apparatus for carrying out the method of the present invention basically comprises a water storage tank 40 with a ball tap 40a for storing pure water from a pure water supply pipe 18, and a liquid feed pump 42 from the water storage tank 40. A mass flow rate control type gas flow rate controller 46 that allows a predetermined absolute amount of ammonia gas from the ammonia gas supply pipe 20 to flow into a pure water supply system 44 that supplies water to the process system 30 via the gas flow rate controller 46. It should be noted that the ammonia gas from the gas flow rate controller 46 can be made to flow into the inlet side of the liquid feed pump 42 via the pipe 48 shown by the solid line, or to the outlet side via the pipe 50 shown by the alternate long and short dash line. it can. Further, in the present embodiment, the gas flow rate controller 46 and the liquid feed pump 4
Although the automatic control device 52 is provided for the second motor 42a, this is not always necessary.
【００１３】このような構成において、アンモニア注入
に際しては、自動制御装置５２を介して先ず送液ポンプ
４２を駆動し、次いでガス流量調節器４６を介して所定
絶対量のアンモニアガスを純水送水系４４に流入、溶解
してアンモニア水を生成する。このアンモニア水は、ア
ンモニア送液系４４´を介してプロセス系３０に注入
し、最後に送液ポンプ４２を停止する。なお、ガス流量
調節器４６および送液ポンプ４２は、容易に手動操作す
ることができるので、前述したように、自動制御装置５
２は必要としない。In such a structure, when injecting ammonia, first, the liquid feed pump 42 is driven through the automatic controller 52, and then a predetermined absolute amount of ammonia gas is fed through the gas flow rate controller 46 into the pure water feed system. It flows into 44 and dissolves to produce ammonia water. This ammonia water is injected into the process system 30 via the ammonia liquid feeding system 44 ', and finally the liquid feeding pump 42 is stopped. Since the gas flow rate controller 46 and the liquid feed pump 42 can be easily manually operated, as described above, the automatic controller 5 is used.
2 is not needed.
【００１４】このように、本発明によれば、ガス流量調
節器を介して所定絶対量のアンモニアを正確にプロセス
系へ注入することができる。しかも、本発明において
は、従来のこの種の技術における大型のアンモニアガス
溶解タンクや複雑なアンモニアガス自動溶解装置を必要
としないので、装置が極めて小型かつ簡単となり、価格
が低減されると同時に、信頼性の向上と共にメンテナン
スの大幅な容易化を達成することができる。As described above, according to the present invention, a predetermined absolute amount of ammonia can be accurately injected into the process system via the gas flow rate controller. Moreover, in the present invention, since the large-sized ammonia gas dissolving tank and the complicated ammonia gas automatic dissolving device in the conventional technique of this kind are not required, the device becomes extremely small and simple, and at the same time the cost is reduced, The reliability can be improved and the maintenance can be greatly facilitated.
【００１５】以上、本発明を好適な実施例について説明
したが、本発明は前記実施例に限定されることなく、そ
の精神を逸脱しない範囲内において多くの設計変更が可
能である。また、本発明は、水質調整に限定されること
なく、この種の装置に対して広く応用することが可能で
ある。Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the above embodiments, and many design changes can be made without departing from the spirit thereof. Further, the present invention is not limited to water quality adjustment, and can be widely applied to this type of device.
【００１６】[0016]
【発明の効果】以上説明したように、本発明に係るアン
モニア注入方法は、貯水タンクから送液ポンプを介して
プロセス系へ送水を行う純水送水系に対し、質量流量調
整形のガス流量調節器を介して所定絶対量のアンモニア
ガスを流入させるよう構成したので、所定量のアンモニ
アを正確にプロセス系へ注入することができる。As described above, according to the ammonia injection method of the present invention, the mass flow rate adjusting type gas flow rate adjustment is performed with respect to the pure water supply system for supplying water from the water storage tank to the process system via the liquid supply pump. Since a predetermined absolute amount of ammonia gas is made to flow in through the reactor, a predetermined amount of ammonia can be accurately injected into the process system.
【００１７】しかも、本発明においては、従来のこの種
技術において必要とされていた大型のアンモニアガス溶
解タンクや複雑なアンモニアガス自動溶解装置を必要と
しないので、装置が極めて小型かつ簡単となり、従って
価格が低減されると同時に信頼性の向上と共にメンテナ
ンスの容易化を実現することがてきる。Moreover, in the present invention, since the large-sized ammonia gas dissolving tank and the complicated automatic ammonia gas dissolving device, which are required in the conventional technique of this kind, are not required, the device is extremely small and simple. At the same time as the price is reduced, reliability can be improved and maintenance can be facilitated.
【図１】本発明に係るアンモニア注入方法を実施する装
置の一実施例を示す系統図である。FIG. 1 is a system diagram showing an embodiment of an apparatus for carrying out an ammonia injection method according to the present invention.
【図２】従来のアンモニア注入方法を実施する装置を示
す系統図である。FIG. 2 is a system diagram showing an apparatus for carrying out a conventional ammonia injection method.
１８ 純水供給配管 ２０ アンモニアガス 供給配管 ３０ プロセス系 ４０ 貯水タンク ４０ａ モータ ４２ 送液ポンプ ４２ａ モータ ４４ 純水送水系 ４４´ アンモニア水送水系 ４６ 質量流量調整形 のガス流量調節器 ４８，５０ 配管 18 Pure Water Supply Pipe 20 Ammonia Gas Supply Pipe 30 Process System 40 Water Storage Tank 40a Motor 42 Liquid Delivery Pump 42a Motor 44 Pure Water Delivery System 44 'Ammonia Water Delivery System 46 Mass Flow Control Type Gas Flow Controller 48, 50 Pipe
Claims (3)
セス系へ送水を行う純水送水系に対し、質量流量調節形
のガス流量調節器を介して所定絶対量のアンモニアガス
を流入させることにより、プロセス系に所定量のアンモ
ニアを注入することを特徴とするアンモニア注入方法。1. A predetermined absolute amount of ammonia gas is caused to flow into a pure water supply system for supplying water from a water storage tank to a process system via a liquid supply pump via a mass flow rate control type gas flow rate controller. A method for injecting ammonia, comprising injecting a predetermined amount of ammonia into a process system.
項１記載のアンモニア注入方法。2. The ammonia injection method according to claim 1, wherein the gas flow rate controller is manually operated.
項１記載のアンモニア注入方法。3. The ammonia injection method according to claim 1, wherein the gas flow rate controller is automatically controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03316536A JP3118291B2 (en) | 1991-11-29 | 1991-11-29 | Ammonia gas injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03316536A JP3118291B2 (en) | 1991-11-29 | 1991-11-29 | Ammonia gas injection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05149506A true JPH05149506A (en) | 1993-06-15 |
| JP3118291B2 JP3118291B2 (en) | 2000-12-18 |
Family
ID=18078200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03316536A Expired - Fee Related JP3118291B2 (en) | 1991-11-29 | 1991-11-29 | Ammonia gas injection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3118291B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876704A (en) * | 2019-04-08 | 2019-06-14 | 华润电力（沧州运东）有限公司 | With ammonia device and with its generating set |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006340223C1 (en) | 2006-03-14 | 2011-05-12 | Yanmar Power Technology Co., Ltd | Submersible cleaning robot |
-
1991
- 1991-11-29 JP JP03316536A patent/JP3118291B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876704A (en) * | 2019-04-08 | 2019-06-14 | 华润电力（沧州运东）有限公司 | With ammonia device and with its generating set |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3118291B2 (en) | 2000-12-18 |
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