JP2523755Y2 - Fluidized bed / spouted bed temperature controller - Google Patents
Fluidized bed / spouted bed temperature controllerInfo
- Publication number
- JP2523755Y2 JP2523755Y2 JP1990041220U JP4122090U JP2523755Y2 JP 2523755 Y2 JP2523755 Y2 JP 2523755Y2 JP 1990041220 U JP1990041220 U JP 1990041220U JP 4122090 U JP4122090 U JP 4122090U JP 2523755 Y2 JP2523755 Y2 JP 2523755Y2
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- combustion air
- bed
- fluidized bed
- exhaust gas
- 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 - Fee Related
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Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、下水汚泥、都市ごみ、石炭等の可燃性物質
を焼却処理する流動床式焼却装置又は噴流床式焼却装置
における流動床又は噴流床の温度調節装置に関するもの
である。[Detailed description of the invention] [Industrial application field] The invention relates to a fluidized bed or spout in a fluidized bed incinerator or a spouted bed incinerator for incinerating combustible substances such as sewage sludge, municipal solid waste, and coal. The present invention relates to a floor temperature controller.
従来、可燃性物質を焼却処理する場合、流動床又は噴
流床の下方に燃焼用空気を供給するのが一般的である。Conventionally, when incinerating a combustible substance, it is common to supply combustion air below a fluidized bed or a spouted bed.
また、特開平１−239309号公報に示されるように、電
気集塵機出口の排ガスの一部を流動床下方の風節へ循環
・供給する汚泥の焼却処理方法も知られている。Further, as disclosed in Japanese Patent Application Laid-Open No. 1-239309, there is also known a method of incinerating sludge which circulates and supplies a part of exhaust gas at the outlet of an electric precipitator to a wind section below a fluidized bed.
これらの単体ガスを供給する方法では、燃焼用空気の
場合、流動床内温度が高くなりすぎて、灰のスラギング
が生じることが多く、その対応のために、可燃性物質の
燃焼に必要な量以上の空気を過剰供給することが行われ
ており、このため、ガス流速が過上昇するという不都合
がある。一方、循環排ガス供給においては、流動床内温
度が低くなりすぎて、良好な燃焼が得られないことがあ
る。In the method of supplying these simple gases, in the case of combustion air, the temperature in the fluidized bed becomes too high, and slagging of ash often occurs. The above-mentioned excessive supply of air is performed, and therefore, there is a disadvantage that the gas flow velocity is excessively increased. On the other hand, in the supply of circulating exhaust gas, the temperature in the fluidized bed may be too low, and good combustion may not be obtained.
流動床または噴流床内の燃焼を良好に維持するために
は、燃焼残渣である灰分が軟化・溶融（スラギング）す
る温度以下で運転する必要がある。In order to maintain good combustion in the fluidized bed or spouted bed, it is necessary to operate at a temperature lower than the temperature at which ash, which is a combustion residue, softens and melts (slags).
一方、可燃性物質を完全燃焼に近く焼却するために
は、可能な限り高温に維持するのが望ましい。なお、不
完全燃焼では残渣物である灰の中に未燃分が多く残り、
灰の有効利用ができなくなったり、埋立処分する上でも
制限が加わる。On the other hand, in order to incinerate combustible materials close to complete combustion, it is desirable to maintain the temperature as high as possible. In the case of incomplete combustion, a large amount of unburned matter remains in the ash, which is a residue,
The ash cannot be used effectively, and there are restrictions on landfill disposal.
このため、流動床又は噴流床内の温度は約700〜1000
℃、好ましくは800〜900℃に調節する必要がある。Therefore, the temperature in the fluidized bed or spouted bed is about 700-1000
C., preferably between 800 and 900.degree.
流動床又は噴流床を安定に形成するためには、下部か
ら供給するガス流量をある範囲内に維持する必要があ
る。流動床でガス流量が少なくなりすぎると、粒子が静
止・堆積してしまい、噴流床でガス流量が少なくなりす
ぎると、粒子が下部に落下・堆積してしまう。一方、ガ
ス流量が多くなりすぎると、可燃性物質が炉内に長時間
滞留することなく、上方へ飛散してしまい、不完全燃焼
を起こす。In order to form a fluidized bed or a spouted bed stably, it is necessary to maintain a gas flow rate supplied from below in a certain range. If the gas flow rate is too low in the fluidized bed, the particles will be stationary and accumulate, and if the gas flow rate is too low in the spouted bed, the particles will fall and accumulate at the bottom. On the other hand, if the gas flow rate is too large, the combustible material will scatter upward without staying in the furnace for a long time, causing incomplete combustion.
本考案は上記の諸点に鑑みなされたもので、各々の流
量調節弁でそれぞれの供給流量を個別に制御して、燃焼
用空気と循環排ガスとを適正流量供給できるように構成
することにより、流動床又は噴流床内を常に一定温度範
囲に維持することができ、かつ、流動化又は噴流化に必
要な量のガスを供給することができる装置を提供するこ
とを目的とするものである。The present invention has been made in view of the above points, and by controlling each supply flow rate individually with each flow rate control valve so as to supply an appropriate flow rate of combustion air and circulating exhaust gas, the flow rate is increased. It is an object of the present invention to provide a device which can always maintain a constant temperature range in a bed or a spouted bed, and can supply an amount of gas required for fluidization or spouting.
上記の目的を達成するために、本考案の流動床・噴流
床の温度調節装置は、図面に示すように、可燃性物質を
処理する流動床式焼却装置又は噴流床式焼却装置１にお
いて、流動床又は噴流床２の下方に、下部燃焼用空気供
給管３及び循環排ガス供給管４を接続し、これらの供給
管３、４に燃焼用空気流量と循環排ガス流量との総和が
一定になるようにそれぞれの供給流量を個別に制御し得
る流量調節弁５、６を設けたことを特徴としている。In order to achieve the above-mentioned object, the fluidized bed / spouted bed temperature controller of the present invention, as shown in the drawing, is used in a fluidized bed incinerator or a spouted bed incinerator 1 for treating combustible substances. A lower combustion air supply pipe 3 and a circulating exhaust gas supply pipe 4 are connected below the bed or the spouted bed 2 so that the sum of the combustion air flow rate and the circulating exhaust gas flow rate is constant in these supply pipes 3 and 4. Are provided with flow control valves 5 and 6 that can individually control the supply flow rates of the respective components.
上記の本考案の装置において、流動床又は噴流床２の
上方のフリーボード８に、下部燃焼用空気流量と上部燃
焼用空気流量との総和を一定に保つように制御する流量
調節弁７を備えた上部燃焼用空気供給管を接続した構成
とすることが望ましい。In the above-described apparatus of the present invention, the free board 8 above the fluidized bed or the spouted bed 2 is provided with a flow control valve 7 for controlling the sum of the lower combustion air flow rate and the upper combustion air flow rate to be kept constant. It is desirable that the upper combustion air supply pipe be connected.
さらに、上記の本考案の装置において、流動床又は噴
流床２内に温度検出器11を設け、循環排ガス流量、下部
燃焼用空気流量及び上部燃焼用空気流量を、燃焼用空気
流量と循環排ガス流量との総和及び下部燃焼用空気流量
と上部燃焼用空気流量との総和が一定になるように制御
して、温度検出器11の指示温度が一定となるように、温
度検出器11に調節器12を介して循環排ガス供給管４の流
量調節弁６、下部燃焼用空気供給管３の流量調節弁５及
び上部燃焼用空気供給管10の流量調節弁７を接続した構
成とすることが望ましい。Further, in the apparatus of the present invention, a temperature detector 11 is provided in the fluidized bed or the spouted bed 2, and the circulating exhaust gas flow rate, the lower combustion air flow rate and the upper combustion air flow rate are determined by the combustion air flow rate and the circulating exhaust gas flow rate. And the sum of the lower combustion air flow rate and the upper combustion air flow rate is controlled to be constant, and the temperature detector 11 has a controller 12 so that the indicated temperature of the temperature detector 11 is constant. It is desirable to connect the flow control valve 6 of the circulation exhaust gas supply pipe 4, the flow control valve 5 of the lower combustion air supply pipe 3, and the flow control valve 7 of the upper combustion air supply pipe 10 via the.
第２図は、供給ガス量一定の場合の供給ガス中のO2濃
度と流動床内温度との関係を示している。図中、Ｄは適
性範囲を示す。第２図に示すように、供給ガス中のO2濃
度が増加すると、ほぼO2濃度に比例して流動床内温度が
決まる。このため、供給ガス中のO2濃度を制御すること
によって、流動床内温度の制御が可能となる。FIG. 2 shows the relationship between the O 2 concentration in the supply gas and the temperature in the fluidized bed when the supply gas amount is constant. In the figure, D indicates an appropriate range. As shown in FIG. 2, when the O 2 concentration in the feed gas increases, the temperature in the fluidized bed is determined substantially in proportion to the O 2 concentration. For this reason, the temperature in the fluidized bed can be controlled by controlling the O 2 concentration in the supply gas.
流動床内の温度が高くなると、循環排ガスの流量調節
弁６を開とし、燃焼用空気の流量調節弁５、７を閉とす
る方向に操作する。When the temperature in the fluidized bed rises, the flow control valve 6 for circulating exhaust gas is opened and the flow control valves 5 and 7 for combustion air are closed.
その際、燃焼用空気流量と循環排ガス流量との総和を
一定に保つように制御するのが望ましい。また、下部燃
焼用空気流量と上部（２段）燃焼用空気流量との総和を
一定に保つように制御するのが望ましい。At this time, it is desirable to control the sum of the combustion air flow rate and the circulating exhaust gas flow rate to be kept constant. It is also desirable to control the sum of the lower combustion air flow rate and the upper (two-stage) combustion air flow rate to be constant.
このように、本考案は、下部燃焼用空気供給管３、循
環排ガス供給管４及び上部燃焼用空気供給管10に設けた
流量調節弁５、６、７により、それぞれの供給流量を個
別に制御するものである。As described above, in the present invention, the supply flow rates are individually controlled by the flow control valves 5, 6, and 7 provided in the lower combustion air supply pipe 3, the circulating exhaust gas supply pipe 4, and the upper combustion air supply pipe 10. Is what you do.
以下、図面を参照して本考案の好適な実施例を詳細に
説明する。ただしこの実施例に記載されている構成機器
の形状、その相対配置などは、とくに特定的な記載がな
い限りは、本考案の範囲をそれらのみに限定する趣旨の
ものではなく、単なる説明例にすぎない。Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the configuration of the components described in this embodiment, the relative arrangement thereof, and the like are not intended to limit the scope of the present invention only to them, unless otherwise specified, and are merely illustrative examples. Only.
実施例１ 第１図において、１は噴流床式焼却装置で、噴流床２
の下方に、下部燃焼用空気供給管３及び循環排ガス供給
管４が接続され、これらの供給管３、４にそれぞれ流量
調節弁５、６が設けられている。循環排ガスとしては、
例えば、集塵機（図示せず）出口の排ガスの一部を使用
する。Example 1 In FIG. 1, reference numeral 1 denotes a spouted bed incinerator,
A lower combustion air supply pipe 3 and a circulating exhaust gas supply pipe 4 are connected to the lower part of the pipe, and flow control valves 5 and 6 are provided in these supply pipes 3 and 4, respectively. As circulating exhaust gas,
For example, a part of the exhaust gas at the outlet of a dust collector (not shown) is used.
本例においては、流量調節弁５、６を個別に制御し
て、噴流床内の温度及びガス流量が一定になるようにす
る。この場合、流量調節弁５、６により、燃焼用空気流
量と循環排ガス流量との総和が一定になるように、それ
ぞれの供給流量を個別に制御することが望ましい。In this example, the flow rate control valves 5 and 6 are individually controlled so that the temperature and the gas flow rate in the spouted bed become constant. In this case, it is desirable that the supply flow rates are individually controlled by the flow rate control valves 5 and 6 such that the sum of the combustion air flow rate and the circulating exhaust gas flow rate becomes constant.
第１図では、供給管３、４を合流させて接続する場合
を示しているが、供給管３、４を別々に噴流床下部ガス
供給管14へ接続しても差し支えない。Although FIG. 1 shows the case where the supply pipes 3 and 4 are joined and connected, the supply pipes 3 and 4 may be separately connected to the gas supply pipe 14 at the lower part of the jet bed.
実施例２ 本例は、実施例１の装置に加えて、第１図に示すよう
に、噴流床２の上方のフリーボード８に、流量調節弁７
を備えた上部（２段）燃焼用空気供給管10を接続したも
のである。Embodiment 2 In this embodiment, in addition to the apparatus of Embodiment 1, as shown in FIG.
This is connected to an upper (two-stage) combustion air supply pipe 10 having
本例においては、流量調節弁５、６、７を個別に制御
して、噴流床内の温度及びガス流量が一定になるように
する。この場合、流量調節弁５、６、７により、燃焼用
空気流量と循環排ガス流量との総和、及び下部燃焼用空
気流量と上部燃焼用空気流量との総和が一定になるよう
に、それぞれの供給流量を個別に制御することが望まし
い。In this example, the flow rate control valves 5, 6, and 7 are individually controlled so that the temperature and the gas flow rate in the spouted bed become constant. In this case, the flow control valves 5, 6 and 7 supply the respective fuels so that the sum of the combustion air flow rate and the circulating exhaust gas flow rate and the sum of the lower combustion air flow rate and the upper combustion air flow rate become constant. It is desirable to control the flow rates individually.
実施例３ 本例は、実施例２の装置に加えて、第１図に示すよう
に、噴流床２内に温度検出器11を設け、この温度検出器
11に調節器12を介して循環排ガス供給管４の流量調節弁
６、下部燃焼用空気供給管３の流量調節弁５及び上部燃
焼用空気供給管10の流量調節弁７を接続したものであ
る。Embodiment 3 In this embodiment, in addition to the apparatus of Embodiment 2, a temperature detector 11 is provided in the spouted bed 2 as shown in FIG.
The flow control valve 6 of the circulating exhaust gas supply pipe 4, the flow control valve 5 of the lower combustion air supply pipe 3, and the flow control valve 7 of the upper combustion air supply pipe 10 are connected to 11 via a controller 12. .
本例では、温度検出器11の指示が一定で、かつ、噴流
床下方のガス流量が一定となるように、流量調節弁５、
６、７を制御する。この場合も、流量調節弁５、６、７
により、燃焼用空気流量と循環排ガス流量との総和、及
び下部燃焼用空気流量と上部燃焼用空気流量との総和が
一定になるように、それぞれの供給流量を個別に制御す
ることが望ましい。13は可燃性物質供給口、14は噴流床
下部ガス供給管、15は灰抜出し弁である。In this example, the flow rate control valve 5 is controlled so that the temperature detector 11 has a constant instruction and the gas flow rate below the spouted bed is constant.
6 and 7 are controlled. Also in this case, the flow control valves 5, 6, 7
Accordingly, it is desirable to individually control the supply flow rates so that the sum of the combustion air flow rate and the circulating exhaust gas flow rate and the sum of the lower combustion air flow rate and the upper combustion air flow rate become constant. 13 is a combustible substance supply port, 14 is a gas supply pipe below the spouted bed, and 15 is an ash extraction valve.
上記の実施例では、噴流床の場合について説明した
が、流動床の場合にも、同様に適用することができる。In the above embodiment, the case of the spouted bed has been described, but the present invention can be similarly applied to the case of the fluidized bed.
本考案は上記のように構成されているので、つぎのよ
うな効果を奏する。Since the present invention is configured as described above, the following effects can be obtained.
（１）各々の流量調節弁でそれぞれの供給流量を個別に
制御することにより、可燃性物質の燃焼に必要な量の空
気及び流動化又は噴流化に必要な量のガスを供給するこ
とができ、しかも流動床又は噴流床内の温度を一定に維
持することができる。(1) By individually controlling the respective supply flow rates by the respective flow control valves, it is possible to supply the air required for combustion of the combustible material and the gas required for fluidization or jet flow. In addition, the temperature in the fluidized bed or spouted bed can be kept constant.
（２）上記の効果により、流動化状態又は噴流化状態を
良好に保ち、可燃性物質の完全燃焼を図ることができ、
かつ、灰のスラギングを防止することができる。(2) Due to the above effects, the fluidized state or the spouted state can be favorably maintained, and complete combustion of the combustible substance can be achieved.
Moreover, slagging of the ash can be prevented.
第１図は本考案の流動床・噴流床の温度調節装置の一実
施例を示す説明図、第２図は流動床内温度に及ぼすO2濃
度の影響を示すグラフである。 １……噴流床式焼却装置、２……噴流床、３……下部燃
焼用空気供給管、４……循環排ガス供給管、５、６、７
……流量調節弁、８……フリーボード、10……上部燃焼
用空気供給管、11……温度検出器、12……調節器、13…
…可燃性物質供給口、14……噴流床下部ガス供給管、15
……灰抜出し弁Explanatory view showing an embodiment of FIG. 1 is a temperature adjustment device of spout-fluid bed of the present invention, FIG. 2 is a graph showing the effect of O 2 concentration on the fluidized bed in the temperature. DESCRIPTION OF SYMBOLS 1 ... Spouted bed type incinerator, 2 ... Spouted bed, 3 ... Lower combustion air supply pipe, 4 ... Circulating exhaust gas supply pipe, 5, 6, 7
…… Flow control valve, 8… Free board, 10… Top combustion air supply pipe, 11… Temperature detector, 12 …… Controller, 13…
… Combustible material supply port, 14 …… gas supply pipe below the spouted bed, 15
...... Ash extraction valve
───────────────────────────────────────────────────── フロントページの続き (72)考案者 平尾 元亮 東京都港区浜松町２丁目４番１号 川崎 重工業株式会社東京本社内 (56)参考文献 特開 昭53−34374（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Motoaki Hirao 2-4-1 Hamamatsucho, Minato-ku, Tokyo Kawasaki Heavy Industries, Ltd. Tokyo Head Office (56) References JP-A-53-34374 (JP, A)
Claims (3)
は噴流床式焼却装置（１）において、流動床又は噴流床
（２）の下方に、下部燃焼用空気供給管（３）及び循環
排ガス供給管（４）を接続し、これらの供給管（３、
４）に燃焼用空気流量と循環排ガス流量との総和が一定
になるようにそれぞれの供給流量を個別に制御し得る流
量調節弁（５、６）を設けたことを特徴とする流動床・
噴流床の温度調節装置。In a fluidized bed incinerator or spouted bed incinerator (1) for treating combustible substances, a lower combustion air supply pipe (3) and a circulation are provided below a fluidized bed or a spouted bed (2). The exhaust gas supply pipes (4) are connected and these supply pipes (3,
4) a fluidized bed comprising a flow control valve (5, 6) which can individually control each supply flow rate so that the sum of the combustion air flow rate and the circulating exhaust gas flow rate becomes constant.
Spout bed temperature controller.
ード（８）に、下部燃焼用空気流量と上部燃焼用空気流
量との総和を一定に保つように制御する流量調節弁
（７）を備えた上部燃焼用空気供給管（10）を接続した
請求項１記載の流動床・噴流床の温度調節装置。2. A flow control valve (7) for controlling the sum of the lower combustion air flow rate and the upper combustion air flow rate at a free board (8) above the fluidized or spouted bed (2). 3. The temperature control device for a fluidized bed / spouted bed according to claim 1, further comprising an upper combustion air supply pipe (10) provided with:
（11）を設け、循環排ガス流量、下部燃焼用空気流量及
び上部燃焼用空気流量を、燃焼用空気流量と循環排ガス
流量との総和及び下部燃焼用空気流量と上部燃焼用空気
流量との総和が一定になるように制御して、温度検出器
（11）の指示温度が一定となるように、温度検出器（1
1）に調節器（12）を介して循環排ガス供給管（４）の
流量調節弁（６）、下部燃焼用空気供給管（３）の流量
調節弁（５）及び上部燃焼用空気供給管（10）の流量調
節弁（７）を接続した請求項２記載の流動床・噴流床の
温度調節装置。3. A temperature detector (11) is provided in a fluidized bed or a spouted bed (2) to determine a circulating exhaust gas flow rate, a lower combustion air flow rate and an upper combustion air flow rate, and a combustion air flow rate and a circulating exhaust gas flow rate. And the sum of the lower combustion air flow rate and the upper combustion air flow rate is controlled to be constant, and the temperature detector (1) is controlled so that the temperature indicated by the temperature detector (11) becomes constant.
The flow control valve (6) of the circulating exhaust gas supply pipe (4), the flow control valve (5) of the lower combustion air supply pipe (3), and the upper combustion air supply pipe (1) via the controller (12) in (1). The fluidized bed / spouted bed temperature control device according to claim 2, wherein the flow control valve (7) of (10) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990041220U JP2523755Y2 (en) | 1990-04-18 | 1990-04-18 | Fluidized bed / spouted bed temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990041220U JP2523755Y2 (en) | 1990-04-18 | 1990-04-18 | Fluidized bed / spouted bed temperature controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH043229U JPH043229U (en) | 1992-01-13 |
| JP2523755Y2 true JP2523755Y2 (en) | 1997-01-29 |
Family
ID=31551703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990041220U Expired - Fee Related JP2523755Y2 (en) | 1990-04-18 | 1990-04-18 | Fluidized bed / spouted bed temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2523755Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5334374A (en) * | 1976-09-10 | 1978-03-30 | Babcock Hitachi Kk | Method and device for burning shells |
-
1990
- 1990-04-18 JP JP1990041220U patent/JP2523755Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH043229U (en) | 1992-01-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |