JP2021080882A - 加水分解システム、脱硝設備及び加水分解システムの制御方法 - Google Patents
加水分解システム、脱硝設備及び加水分解システムの制御方法 Download PDFInfo
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- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
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- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2251/00—Reactants
- B01D2251/20—Reductants
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- B01D2251/2067—Urea
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2259/00—Type of treatment
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- B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
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- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater
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- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner
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- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/40—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a hydrolysis catalyst
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- F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N2610/00—Adding substances to exhaust gases
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- F01N2610/00—Adding substances to exhaust gases
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
- F01N2610/085—Controlling the air supply
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- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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Abstract
Description
以下、本発明の一実施形態について、図面を参照しつつ以下に説明する。本願における各図面に記載した構成の形状および寸法(長さ、幅、高さ等)は、実際の形状および寸法が必ずしも反映されたものではなく、図面の明瞭化および簡略化のために適宜変更されている。
図1は、実施形態1に係る加水分解システム10を備えた、脱硝設備1を示す概略構成図である。脱硝設備1は、ディーゼルエンジン等のエンジンからの排ガスを脱硝触媒30で脱硝処理して排出する。脱硝触媒30には、エンジンからの排ガスを導入する排ガスライン21が接続されている。また、脱硝触媒30には、脱硝処理したガスを排出するための排出ライン24が接続されている。
実施形態1に係る加水分解システム10は、アンモニアを含んだ処理ガスを脱硝触媒に対して供給するための装置である。加水分解システム10は、第1ファン100、バーナユニット200、第2ファン300、加水分解容器400、ポンプ500と、制御装置600と、を備えている。
次に、図1及び図2を参照しつつ、加水分解システム10の動作について説明する。
実施形態1に係る加水分解システム10は、加水分解容器400への尿素水の供給量に基づいて、加水分解容器400に供給される抽気の量が制御される。従って、加水分解容器400において、ガスの供給に対して尿素水の供給(噴霧)が過剰となってガス流の温度が低下し、アンモニアの供給が不十分となることが抑制される。
本発明の他の実施形態について、以下に説明する。なお、説明の便宜上、上記実施形態にて説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を繰り返さない。
実施形態2に係る加水分解システム10は、実施形態1と同様である。実施形態2においては、加水分解システム10の第1ファン100が取り込む抽気の位置が、図1に示す実施形態1とは異なる。
制御装置600の各制御ブロック(特に、尿素水供給量検出部610、ガス流量演算部620、ファン制御部630、外気流量検出部640)は、集積回路(ICチップ)等に形成された論理回路(ハードウェア)によって実現してもよいし、ソフトウェアによって実現してもよい。
本発明の態様1に係る加水分解システムは、ガス流に尿素水を噴霧しアンモニアを生成させる加水分解容器と、前記加水分解容器に対して前記ガス流を供給する第1ファンと、制御装置と、を備え、前記制御装置は、前記加水分解容器への前記尿素水の供給量に基づいて前記ガス流の供給量を変化させるように、前記第1ファンを制御する構成を備える。
本発明は上述した実施形態、変形例に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。例えば、図2または図3に示される制御装置600のいずれもが、実施形態2の加水分解システム10に適用され得る。
10 加水分解システム
100 第1ファン
200 バーナユニット
201 燃焼室
202 バーナ
300 第2ファン
400 加水分解容器
401 ノズル
500 ポンプ
600 制御装置
610 尿素水供給量検出部
620 ガス流量演算部
630 ファン制御部
640 外気流量検出部
30 脱硝触媒
11 燃料ライン
12 外気ライン
13 供給ライン
21 排ガスライン
22 抽気ライン
23 処理ガスライン
24 排出ライン
Claims (8)
- ガス流に尿素水を噴霧しアンモニアを生成させる加水分解容器と、
前記加水分解容器に対して前記ガス流を供給する第1ファンと、
制御装置と、を備え、
前記制御装置は、前記加水分解容器への前記尿素水の供給量に基づいて前記ガス流の供給量を変化させるように、前記第1ファンを制御することを特徴とする、加水分解システム。 - 前記第1ファンと前記加水分解容器との間に、前記ガス流を加熱するバーナユニットを更に備える、請求項1に記載の加水分解システム。
- 前記バーナユニットにおいて燃料を燃焼させるための、空気を取り入れる第2ファンを更に備えることを特徴とする、請求項2に記載の加水分解システム。
- 前記制御装置は、前記尿素水の供給量に比例するように、前記ガス流の供給量を変化させることを特徴とする、請求項1から3のいずれか1項に記載の加水分解システム。
- 前記制御装置は、前記ガス流の供給量と前記空気の取り入れ量の合計が、前記尿素水の供給量に比例するように、前記ガス流の供給量を変化させることを特徴とする、請求項3に記載の加水分解システム。
- 請求項1から5のいずれか1項に記載の加水分解システムと、
エンジンからの排ガスの脱硝処理を行う脱硝触媒と、を備えた脱硝設備であって、
前記第1ファンは、前記脱硝設備が排出したガスを抽気し、
前記加水分解容器からの処理ガスは、前記排ガスに混合されて前記脱硝触媒に導入されることを特徴とする、脱硝設備。 - 請求項1から5のいずれか1項に記載の加水分解システムと、
エンジンからの排ガスの脱硝処理を行う脱硝触媒と、を備えた脱硝設備であって、
前記第1ファンは、前記エンジンからの前記排ガスを抽気し、
前記加水分解容器からの処理ガスは、前記排ガスに混合されて前記脱硝触媒に導入されることを特徴とする、脱硝設備。 - ガス流に尿素水を噴霧しアンモニアを生成させる加水分解容器と、
前記加水分解容器に対して前記ガス流を供給する第1ファンと、を備えた加水分解システムの制御方法であって、
前記加水分解容器への前記尿素水の供給量に基づいて前記ガス流の供給量を変化させるように、前記第1ファンを制御することを特徴とする、加水分解システムの制御方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019208834A JP7254010B2 (ja) | 2019-11-19 | 2019-11-19 | 加水分解システム、脱硝設備及び加水分解システムの制御方法 |
EP20891287.3A EP4063623A4 (en) | 2019-11-19 | 2020-07-29 | HYDROLYSIS SYSTEM, DENITRATION DEVICE AND CONTROL METHOD FOR HYDROLYSIS SYSTEM |
CN202080080368.7A CN114761675B (zh) | 2019-11-19 | 2020-07-29 | 水解系统、脱硝设备以及水解系统的控制方法 |
KR1020227019360A KR20220099996A (ko) | 2019-11-19 | 2020-07-29 | 가수분해 시스템, 탈질설비 및 가수분해 시스템의 제어방법 |
PCT/JP2020/028999 WO2021100250A1 (ja) | 2019-11-19 | 2020-07-29 | 加水分解システム、脱硝設備及び加水分解システムの制御方法 |
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