JPS58187712A - Nox suppression three-step burning method - Google Patents
Nox suppression three-step burning methodInfo
- Publication number
- JPS58187712A JPS58187712A JP7214282A JP7214282A JPS58187712A JP S58187712 A JPS58187712 A JP S58187712A JP 7214282 A JP7214282 A JP 7214282A JP 7214282 A JP7214282 A JP 7214282A JP S58187712 A JPS58187712 A JP S58187712A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- emulsified
- nozzle
- soot
- combustion
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
- F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
- F23C6/047—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure with fuel supply in stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2201/00—Staged combustion
- F23C2201/10—Furnace staging
- F23C2201/101—Furnace staging in vertical direction, e.g. alternating lean and rich zones
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
【発明の詳細な説明】 本発明はＮＯｘ抑制三段燃焼法に関する。[Detailed description of the invention] The present invention relates to a NOx suppression three-stage combustion method.
従来の三段燃焼法においては、第１図及び第２図に示す
ように、−次燃料ノズル（１）と−次空気ノズル（２）
とを有する一次パーナ（３）、二次燃料ノズル（４）及
び二次空気ノズル（５）が順次燃焼後流１１に配置され
て、その二次燃焼域を還元雰囲気とすることにより、そ
れまで発生した１１０．を１意Ｋ１１１元する仁とによ
ってＮＯｘの低減化が図られている。なお、第１図は燃
焼室（６）が竪型の場合を示し、第２図は燃焼室（６）
が横型の場合を示し、また図中、（１）は燃料供給管、
（８）は燃焼室（６）内壁に配置され丸伝熱管、（４）
は−次燃焼域、（至）は二次燃焼域、（９は三次燃焼域
を示す。In the conventional three-stage combustion method, as shown in Figs. 1 and 2, a -order fuel nozzle (1) and a -order air nozzle (2) are
A primary burner (3), a secondary fuel nozzle (4), and a secondary air nozzle (5) having 110. The reduction of NOx is achieved by reducing the amount of fuel by 111 yen. Note that Fig. 1 shows the case where the combustion chamber (6) is vertical, and Fig. 2 shows the case where the combustion chamber (6) is vertical.
shows the case of horizontal type, and in the figure, (1) is the fuel supply pipe,
(8) is a round heat transfer tube placed on the inner wall of the combustion chamber (6), (4)
(9) indicates the secondary combustion area, (9) indicates the secondary combustion area, and (9) indicates the tertiary combustion area.
ところで、上記のような三段燃焼方法によると、負荷の
高い炉、若しくは小型の炉にあっては、燃焼ガスの炉内
ｗｉｉ時間が短かく煤塵量が増加する仲向かあり、％に
重質燃料を用いた場合、その傾向が著しいという欠点が
あった。By the way, according to the above-mentioned three-stage combustion method, in high-load furnaces or small-sized furnaces, the amount of soot and dust increases due to the short time the combustion gas is in the furnace. The disadvantage is that this tendency is more pronounced when using high quality fuel.
そこで、本発明は上記欠点を解消し得るＮＯｘ抑制三段
燃焼法を提供することを目的とする。Therefore, an object of the present invention is to provide a NOx suppression three-stage combustion method that can eliminate the above-mentioned drawbacks.
即ち、本発明は一次バーナ、二次燃料ノズル及び二次空
気ノズルが順次燃焼後流側に配置されて三段燃焼を行な
う際に１上記二次燃料ノズルに供給する燃料として乳化
燃料を使用することを特徴とするＮＯｘ抑制三段燃焼法
である。That is, the present invention uses emulsified fuel as the fuel to be supplied to the secondary fuel nozzle when the primary burner, the secondary fuel nozzle, and the secondary air nozzle are sequentially arranged on the downstream side of combustion to perform three-stage combustion. This is a NOx suppression three-stage combustion method characterized by the following.
かかる方法によると、二次燃料として乳化燃料を使用す
るので、例えば全部の燃料を乳化した場合に比べて、水
混入による熱損失の増加を抑えることができると共忙、
煤塵発生量を大幅に抑えることができる。According to this method, since emulsified fuel is used as the secondary fuel, it is possible to suppress an increase in heat loss due to water contamination compared to, for example, when all the fuel is emulsified.
The amount of soot and dust generated can be significantly reduced.
以下、本発明の一実施例を８３図に基づき説明する。な
お、第６図は竪型の燃焼室ｊｌｌｌの場合を示す、燃焼
室（田には、順次、−次バーナ（Ｉ４、二次燃料ノズル
Ｈ１及び二次空気ノズル圓が燃焼後流−に（即ち、下か
ら上に向って）配置され、また−次バーナａ力にはオイ
ルポンプ０＠とオイルヒーター傾を有する主燃料供給管
（１？）が接続され、二次燃料ノズル０３１には主燃料
供給管Ｇηのオイルヒーター偵下流側から分枝された副
燃料供給管端が接続さ九二次空気ノズル０４には空気が
供給されて、三段燃焼が成される。そして、この三段燃
焼時において、二次燃料ノズル（Ｉ３１Ｋ供給される燃
料中に１熱水を混入、攪拌させて、二次燃料を乳化即ち
エマルジョン燃料として燃焼室（１りに供給する。従っ
て、上記副燃料供給管端途中には、水ポンプ帽とヒータ
ー（至）を有する熱水供給管圓が接続され、また副燃料
供給管ａ場の熱水供給管■蔚接続部下Ｒ＠には、燃料と
熱水とを混合攪拌させるミキサー固が設けられている。Hereinafter, one embodiment of the present invention will be described based on FIG. In addition, FIG. 6 shows the case of a vertical combustion chamber, in which a secondary burner (I4, a secondary fuel nozzle H1, and a secondary air nozzle circle are placed in the afterstream of combustion). In other words, the main fuel supply pipe (1?) having an oil pump 0@ and an oil heater is connected to the secondary burner a, and the secondary fuel nozzle 031 is connected to the main fuel supply pipe (1?) from the bottom to the top. The auxiliary fuel supply pipe end branched from the oil heater recoil side of the fuel supply pipe Gη is connected to the secondary air nozzle 04, where air is supplied to perform three-stage combustion. During combustion, hot water is mixed into the fuel supplied to the secondary fuel nozzle (I31K) and stirred to emulsify the secondary fuel, which is then supplied to the combustion chamber (1) as an emulsion fuel. A hot water supply pipe with a water pump cap and a heater (toward) is connected to the middle of the pipe end, and fuel and hot water are connected to the hot water supply pipe R@ of the auxiliary fuel supply pipe A field. A mixer is provided to mix and stir the
このようＫ、二次燃料として乳化燃料を使用するので、
例えば全部の燃料を乳化した場合に比べて、水混入によ
る熱損失の増加を抑えることができると共Ｋ、煤塵発生
量を大＠に抑えることができる。In this way, since emulsified fuel is used as a secondary fuel,
For example, compared to the case where all the fuel is emulsified, it is possible to suppress the increase in heat loss due to water contamination, and the amount of soot and dust generated can be suppressed to a large extent.
なお、実際の燃焼運転時忙おける二次燃料のエマルジョ
ン率と発生煤塵量との関係を示すと第４図に示すグラフ
のよう［するーThe relationship between the emulsion rate of the secondary fuel and the amount of dust generated during actual combustion operation is shown in the graph shown in Figure 4.
第１図及び第２図は従来例を示す概略構成図、第６図は
本発明の一実施例の概略構成図、第４図は二次燃料とし
て乳化燃料を使用した場合における０２濃度と発生煤塵
量との関係を示すグラフである０
（１１）・・・燃焼室、四・・・−次バーナ、ＯＦ・・
二次燃料ノズル、Ｉ・・・二次空気ノズル、霞・・・オ
イルポンプ、鏝・・・オイルヒーター、Ｑη・・・主燃
料供給管、賎・・・副燃料供給管、ｌ・・・水ポンプ、
翰・・・ヒーター、圓・・・代理人 森 本
義 弘
第１図
第２図
！
第３図
第４図
連成）件
υＩ＆（％）
Ｈａ ｔ、Ｉ ｔ、２
１−３ μ中気比入（−）
手続補正書（自発）
昭和 ５７年特 許 願第 ７２１４２ １、発明の
名称
ｆ件との関係 特許出願人
名称 （５１１）日立造船株式会社
４代 理 人
住 所 〒効大阪市西区立売堀１丁目６番１７号アマノ
ビル５ の日付（発送日）昭和
年 月 日
６、補正により増加する発明の数
７、補正の対象
ｌＡ面の一部
８、補正の内容
第１図Figures 1 and 2 are schematic configuration diagrams showing a conventional example, Figure 6 is a schematic configuration diagram of an embodiment of the present invention, and Figure 4 is 02 concentration and generation when emulsified fuel is used as secondary fuel. This is a graph showing the relationship with the amount of soot and dust. (11) Combustion chamber, quaternary burner, OF...
Secondary fuel nozzle, I...Secondary air nozzle, Kasumi...Oil pump, Trowel...Oil heater, Qη...Main fuel supply pipe, Sha...Auxiliary fuel supply pipe, L... water pump,
Kan...Heater, En...Agent Morimoto
Yoshihiro Figure 1 Figure 2! Fig. 3 Fig. 4 coupled) matter υI & (%) Ha t, I t, 2
1-3 μ midair ratio (-) Procedural amendment (voluntary) 1982 Patent Application No. 72142 1. Name of invention Relationship with item f Name of patent applicant (511) Hitachi Zosen Corporation 4th Agent Address: Amano Building 5, 1-6-17 Tachiuribori, Nishi-ku, Osaka Date (shipment date) Showa
Year Month Day 6, Number of inventions increased by amendment 7, Part of IA surface subject to amendment 8, Contents of amendment Figure 1
Claims (1)
順次燃焼後流［Ｋ配置されて三段燃焼を行なう際Ｋ、上
記二次燃料ノズルに供給する燃料として乳化燃料を使用
することを特徴とするＮｏ！１ｑ１１１１１１三段燃焼
法。L - A secondary burner, a secondary fuel nozzle, and a secondary air nozzle are sequentially arranged in the combustion wake [K, and when performing three-stage combustion, emulsified fuel is used as the fuel supplied to the secondary fuel nozzle. No! 1q111111 Three-stage combustion method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7214282A JPS58187712A (en) | 1982-04-27 | 1982-04-27 | Nox suppression three-step burning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7214282A JPS58187712A (en) | 1982-04-27 | 1982-04-27 | Nox suppression three-step burning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58187712A true JPS58187712A (en) | 1983-11-02 |
| JPS6231249B2 JPS6231249B2 (en) | 1987-07-07 |
Family
ID=13480727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7214282A Granted JPS58187712A (en) | 1982-04-27 | 1982-04-27 | Nox suppression three-step burning method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58187712A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0182063A2 (en) * | 1984-11-15 | 1986-05-28 | L. & C. Steinmüller GmbH | Method for the reduction of the NOX content in combustion gases |
| JPS6287707A (en) * | 1985-10-14 | 1987-04-22 | Hitachi Zosen Corp | Nox control combustion method |
| US7168947B2 (en) * | 2004-07-06 | 2007-01-30 | General Electric Company | Methods and systems for operating combustion systems |
| US7249946B2 (en) * | 2001-05-30 | 2007-07-31 | Institut Francais Du Petrole | Thermal generator and combustion method for limiting nitrogen oxides emissions by re-combustion of fumes |
| JP2009276044A (en) * | 2008-04-14 | 2009-11-26 | Toshiharu Fukai | Combustion apparatus for emulsified fuel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4958218A (en) * | 1972-10-09 | 1974-06-06 | ||
| JPS5270434A (en) * | 1975-12-09 | 1977-06-11 | Hitachi Zosen Corp | Method of three-stage burning for suppressing generation of nitrogen |
| JPS553599A (en) * | 1978-06-19 | 1980-01-11 | Zink Co John | Fluid fuel burner |
-
1982
- 1982-04-27 JP JP7214282A patent/JPS58187712A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4958218A (en) * | 1972-10-09 | 1974-06-06 | ||
| JPS5270434A (en) * | 1975-12-09 | 1977-06-11 | Hitachi Zosen Corp | Method of three-stage burning for suppressing generation of nitrogen |
| JPS553599A (en) * | 1978-06-19 | 1980-01-11 | Zink Co John | Fluid fuel burner |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0182063A2 (en) * | 1984-11-15 | 1986-05-28 | L. & C. Steinmüller GmbH | Method for the reduction of the NOX content in combustion gases |
| JPS6287707A (en) * | 1985-10-14 | 1987-04-22 | Hitachi Zosen Corp | Nox control combustion method |
| JPH0518003B2 (en) * | 1985-10-14 | 1993-03-10 | Hitachi Shipbuilding Eng Co | |
| US7249946B2 (en) * | 2001-05-30 | 2007-07-31 | Institut Francais Du Petrole | Thermal generator and combustion method for limiting nitrogen oxides emissions by re-combustion of fumes |
| US7168947B2 (en) * | 2004-07-06 | 2007-01-30 | General Electric Company | Methods and systems for operating combustion systems |
| JP2009276044A (en) * | 2008-04-14 | 2009-11-26 | Toshiharu Fukai | Combustion apparatus for emulsified fuel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6231249B2 (en) | 1987-07-07 |
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