JPS6123442B2 - - Google Patents
Info
- Publication number
- JPS6123442B2 JPS6123442B2 JP11659678A JP11659678A JPS6123442B2 JP S6123442 B2 JPS6123442 B2 JP S6123442B2 JP 11659678 A JP11659678 A JP 11659678A JP 11659678 A JP11659678 A JP 11659678A JP S6123442 B2 JPS6123442 B2 JP S6123442B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- fluidized bed
- bed incinerator
- gas passage
- nozzle
- 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.)
- Expired
Links
- 230000007423 decrease Effects 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims 2
- 239000007789 gas Substances 0.000 description 21
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000112 cooling gas Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/002—Fluidised bed combustion apparatus for pulverulent solid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Description
【発明の詳細な説明】
この発明は流動層焼却炉の構造特に空塔部上部
の炉の形状に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a fluidized bed incinerator, particularly the shape of the furnace in the upper part of the column.
従来の流動層焼却炉１ａの構造は、第１図に示
すごとく、一次燃焼を行なう流動層部２ａと該流
動層部２ａで発生する未燃分を完全燃焼させる二
次燃焼域としての空塔部３ａとは共に筒状をな
し、直立し、この筒状体の軸心に直交して排ガス
出口の筒状の煙道４ａが接続している。 As shown in Fig. 1, the conventional fluidized bed incinerator 1a has a structure that includes a fluidized bed section 2a that performs primary combustion and an empty column that serves as a secondary combustion zone that completely burns unburned matter generated in the fluidized bed section 2a. The part 3a is both cylindrical and stands upright, and is connected to a cylindrical flue 4a at the exhaust gas outlet perpendicular to the axis of the cylindrical body.
また一般に被焼却物である産業廃棄物等の中に
はバナジウム、ナトリウム等の低融点化合物が含
まれている。そのために排ガス中には前記低融点
物が同伴され、焼却温度（例えば850℃）のまま
排ガスを前記煙道４ａに導いたのでは煙道４ａ内
壁に前記低融点物が付着成長し、煙道の圧力損失
の増大を招くことになる。 Furthermore, industrial waste, which is generally incinerated, contains low melting point compounds such as vanadium and sodium. Therefore, the low melting point substances are entrained in the exhaust gas, and if the exhaust gas is led to the flue 4a at the incineration temperature (for example, 850°C), the low melting point substances will adhere and grow on the inner wall of the flue 4a, causing the flue gas to grow. This will lead to an increase in pressure loss.
従つて前記空塔部３ａ上部に冷却用空気ノズル
を設け、煙道４ａに導かれる排ガスの温度を前記
低融点物の融点以下（例えば350℃）に冷却する
ようにし、低融点物の煙道内壁への付着を防止し
ている。 Therefore, a cooling air nozzle is provided in the upper part of the tower section 3a to cool the temperature of the exhaust gas guided to the flue 4a to below the melting point of the low melting point substance (for example, 350°C), and the flue gas of the low melting point substance is Prevents adhesion to inner walls.
このような構造にするときは流動層炉上部即ち
空塔部上部の隅角に渦流５ａを生じかつ下降ガス
流６ａが一部壁面に沿つて生ずる現象がある。こ
の戻りの下降ガスの一部は冷却用空気ノズル７ａ
から冷空気を伴うので排ガス温度が低下し、排ガ
ス中の未燃分の燃焼、分解に必要とする熱量、温
度を維持できず、結果としてこれらのガスのため
余分の補助燃料を必要とするという欠点を生じて
いる。 When such a structure is adopted, a phenomenon occurs in which a vortex 5a is generated at the corner of the upper part of the fluidized bed furnace, that is, the upper part of the cavity, and a descending gas flow 6a is partly generated along the wall surface. A part of this returning descending gas is sent to the cooling air nozzle 7a.
Since the exhaust gas is accompanied by cold air, the temperature of the exhaust gas decreases, making it impossible to maintain the amount of heat and temperature required for combustion and decomposition of unburned substances in the exhaust gas, and as a result, extra auxiliary fuel is required for these gases. It has caused drawbacks.
この発明はこのような欠点をなくし、戻り下降
ガス流を生ぜしめることなく、かつ高温排ガスと
冷却気体（例えば空気）との混合を充分ならしめ
る流動層焼却炉の構造を提案することを目的とす
る。 The purpose of this invention is to eliminate such drawbacks and to propose a structure for a fluidized bed incinerator that does not generate a return downward gas flow and allows sufficient mixing of high-temperature exhaust gas and cooling gas (for example, air). do.
要するにこの発明は、排ガスの通路に渦流を生
ぜしめることなくかつ冷却気体と高温排ガスを混
合させるため、排ガス通路をその横断面積を渦流
を生じない程度に漸減するものとし、かつ冷却気
体の噴出方向の壁面にほぼ沿いかつ排ガスの後流
方向に向けたものであることを特徴とする。 In short, in order to mix cooling gas and high-temperature exhaust gas without creating a vortex in the exhaust gas passage, the cross-sectional area of the exhaust gas passage is gradually reduced to such an extent that no vortex is generated, and the direction in which the cooling gas is ejected is It is characterized by being approximately along the wall surface and facing in the downstream direction of the exhaust gas.
この発明の一実施例を第２図により説明する。
空塔部上部はその横断面形状にほぼ円形としその
排ガス流れを90度変向しているものである。さら
に排ガス流と冷却空気の混合を良好ならしめるた
め冷却気供給ノズルの軸心を水平に対し角度α、
横断面周壁接線方向に対し角度β丈傾けて空気供
給ノズル７を複数個設けるものである。αは60〜
45、βは20〜45にすることが好ましい。 An embodiment of this invention will be explained with reference to FIG.
The upper part of the empty column has a nearly circular cross-sectional shape, and the exhaust gas flow is deflected by 90 degrees. Furthermore, in order to improve the mixing of the exhaust gas flow and cooling air, the axis of the cooling air supply nozzle is set at an angle α with respect to the horizontal.
A plurality of air supply nozzles 7 are provided inclined at an angle β with respect to the tangential direction of the peripheral wall of the cross section. α is 60~
45, β is preferably 20 to 45.
第３図は排ガス流に変向のない場合の例を示す
ものである。ただし製作の便宜上、縦断面におけ
る曲線部８を、えび胴状屈折線の集合としてもよ
い。 FIG. 3 shows an example where there is no change in direction of the exhaust gas flow. However, for convenience in manufacturing, the curved portion 8 in the longitudinal section may be a collection of shrimp-like bent lines.
この発明を実施することにより、戻り下降ガス
流を生ずることなく、燃料の消費量を節減するこ
とができ、空塔上部の排ガス温度と低下による付
着物の低減がされる等種々の効果を生ずるもので
ある。 By implementing this invention, it is possible to reduce fuel consumption without generating a return downward gas flow, and various effects such as reducing the exhaust gas temperature at the upper part of the tower and reducing deposits are produced. It is something.
第１図は従来の流動層焼却炉の縦断面図、第２
図はこの発明の実施例１の縦断面図、第３図は第
２の実施例の縦断面図、第４図は第２図のＡ−Ａ
断面図である。
１……流動層焼却炉、２……流動層部、３……
空塔部、４……出口の煙道、７……冷空気供給ノ
ズル。
Figure 1 is a vertical cross-sectional view of a conventional fluidized bed incinerator;
The figure is a longitudinal sectional view of the first embodiment of the present invention, FIG. 3 is a longitudinal sectional view of the second embodiment, and FIG. 4 is a line A-A in FIG. 2.
FIG. 1... Fluidized bed incinerator, 2... Fluidized bed section, 3...
Sky tower section, 4...exit flue, 7...cold air supply nozzle.
Claims (1)
け横断面積が漸減するものにし、かつ炉頂部で排
ガスに冷却媒体を噴出するノズルをこの排ガス通
路に設け、さらに前記ノズルは冷却媒体の噴出方
向が排ガス後流方向に向くように形成されている
ことを特徴とする流動層焼却炉。 ２ 流動層焼却炉上部の排ガス通路が炉軸心につ
きほぼ90度その流路を変向しかつその横断面積を
排出側に向けて滑らかに漸減するものであること
を特徴とする特許請求の範囲第１項記載の流動層
焼却炉。[Scope of Claims] 1. The exhaust gas passage in the upper part of the fluidized bed incinerator has a cross-sectional area that gradually decreases toward the discharge side, and a nozzle for spouting a cooling medium into the exhaust gas at the top of the furnace is provided in this exhaust gas passage, and further, the nozzle 1. A fluidized bed incinerator characterized in that the cooling medium is ejected in the direction of exhaust gas downstream. 2. Claims characterized in that the exhaust gas passage in the upper part of the fluidized bed incinerator changes its direction by approximately 90 degrees about the furnace axis, and its cross-sectional area gradually decreases toward the discharge side. The fluidized bed incinerator according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11659678A JPS5543347A (en) | 1978-09-25 | 1978-09-25 | Incinerator with fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11659678A JPS5543347A (en) | 1978-09-25 | 1978-09-25 | Incinerator with fluidized bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5543347A JPS5543347A (en) | 1980-03-27 |
| JPS6123442B2 true JPS6123442B2 (en) | 1986-06-05 |
Family
ID=14691051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11659678A Granted JPS5543347A (en) | 1978-09-25 | 1978-09-25 | Incinerator with fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5543347A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS602817A (en) * | 1983-06-20 | 1985-01-09 | Ebara Corp | Incinerating device |
| KR100413612B1 (en) * | 2000-08-30 | 2003-12-31 | 동양메이저 주식회사 | By-pass probe system with multi-directional cooling ducts |
-
1978
- 1978-09-25 JP JP11659678A patent/JPS5543347A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5543347A (en) | 1980-03-27 |
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