JPH07305824A - Operating method for heat storage type catalytic burner and controller - Google Patents
Operating method for heat storage type catalytic burner and controllerInfo
- Publication number
- JPH07305824A JPH07305824A JP6097709A JP9770994A JPH07305824A JP H07305824 A JPH07305824 A JP H07305824A JP 6097709 A JP6097709 A JP 6097709A JP 9770994 A JP9770994 A JP 9770994A JP H07305824 A JPH07305824 A JP H07305824A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- heat storage
- housing
- valve
- treated
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、有機溶剤を含む排ガス
である被処理ガスを燃焼する蓄熱式触媒燃焼装置の運転
方法およびその制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a heat storage type catalytic combustion apparatus which burns a gas to be treated, which is an exhaust gas containing an organic solvent, and a control system therefor.
【０００２】[0002]
【従来の技術】塗装工場およびその他の各種の工場から
排出される悪臭物質である有機溶剤を含む被処理ガスの
前記有機溶剤を除去するために、従来から、被処理ガス
を蓄熱材の周方向に部分的を軸線方向に通過して蓄熱材
により予熱され、触媒によって燃焼させ、さらに追加的
にバーナによってその有機溶剤を燃焼させ、その後、触
媒を経てさらに周方向の残余の部分を軸線方向に通過し
て蓄熱材を加熱した後、排出する方法が知られているそ
の触媒によって被処理ガスの有機溶剤が燃焼された後の
温度が、たとえば約５５０℃以上になると触媒が劣化す
る。このことを防ぐために、或る先行技術では、その高
温度の浄化されたガスを、再び蓄熱材に導くことなく部
分的に大気放散している。このような先行技術では、高
温度の浄化されたガスが大気放散されるので、直火防止
対策や高価な高温用自動弁が必要となる。2. Description of the Related Art In order to remove the organic solvent of a gas to be treated containing an organic solvent which is an offensive odor substance discharged from a painting factory and other various factories, the gas to be treated has been conventionally used in the circumferential direction of a heat storage material. Partly in the axial direction to be preheated by the heat storage material, burned by the catalyst, and additionally burnt the organic solvent by the burner, and then the remaining portion in the circumferential direction is further axially passed through the catalyst. It is known to discharge the heat storage material after passing through it to heat the heat storage material. When the temperature after the organic solvent of the gas to be treated is burned by the catalyst becomes, for example, about 550 ° C. or higher, the catalyst deteriorates. In order to prevent this, in one prior art, the high-temperature purified gas is partially released to the atmosphere without being guided to the heat storage material again. In such a prior art, since purified gas of high temperature is emitted to the atmosphere, direct fire prevention measures and expensive automatic valve for high temperature are required.
【０００３】他の先行技術では、被処理ガスの触媒によ
って燃焼されたガスの温度が高温度になったとき、散水
して冷却する構成を有しており、その先行技術はたとえ
ば特開平１−１２７８１１に開示されている。この先行
技術では、散水される水に含まれる無機溶解分がスケー
ルとなって触媒および蓄熱材に付着し、長期間の連続運
転が困難になる。In another prior art, when the temperature of the gas combusted by the catalyst of the gas to be treated reaches a high temperature, it is sprinkled with water to cool it. No. 127811. In this prior art, the inorganic dissolved components contained in the sprinkled water become scales and adhere to the catalyst and the heat storage material, which makes continuous operation for a long period of time difficult.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、簡
易、安価な方法で触媒および蓄熱材を汚損することな
く、長期間にわたって連続運転が可能である蓄熱式触媒
燃焼装置の運転方法および制御装置を提供することであ
る。SUMMARY OF THE INVENTION An object of the present invention is to operate and control a heat storage type catalytic combustion apparatus capable of continuous operation for a long period of time without polluting the catalyst and heat storage material by a simple and inexpensive method. It is to provide a device.
【０００５】[0005]
【課題を解決するための手段】本発明は、（ａ）ハウジ
ングと、（ｂ）ハウジング内に収納される蓄熱材と、
（ｃ）ハウジング内で蓄熱材の上部に設けられ、被処理
ガスを燃焼する触媒と、（ｄ）ハウジング内で、上下に
延び、蓄熱材と触媒とを周方向に間隔をあけて仕切って
通路を形成し、ハウジングの上部で共通の空間に連通す
る仕切板と、（ｅ）ハウジングの下部に設けられ、仕切
板によって仕切られた前記各通路に蓄熱材の周方向に順
次的に被処理ガスを供給するとともに、その被処理ガス
を供給する通路から周方向にずれた他の通路からの浄化
されたガスを導く、通路の周方向の切換え速度が可変で
ある切換え弁とを備える蓄熱式触媒燃焼装置の運転方法
において、（ｆ）前記共通の空間の温度に応じて切換え
弁の切換え速度を制御することを特徴とする蓄熱式触媒
燃焼装置の運転方法である。The present invention comprises (a) a housing, (b) a heat storage material housed in the housing,
(C) a catalyst that is provided above the heat storage material in the housing and burns the gas to be treated; and (d) vertically extends in the housing, and divides the heat storage material and the catalyst with a circumferential interval to divide the passage. And a partition plate communicating with a common space at the upper part of the housing, and (e) gas to be treated sequentially in the circumferential direction of the heat storage material in each of the passages provided at the lower part of the housing and partitioned by the partition plate. And a switching valve having a variable switching speed in the circumferential direction of the passage for guiding purified gas from another passage that is displaced in the circumferential direction from the passage for supplying the gas to be treated. In the method of operating the combustion apparatus, (f) the method of operating the heat storage type catalytic combustion apparatus characterized in that the switching speed of the switching valve is controlled according to the temperature of the common space.
【０００６】また本発明は、（ａ）ハウジングと、
（ｂ）ハウジング内に収納される蓄熱材と、（ｃ）ハウ
ジング内で蓄熱材の上部に設けられ、被処理ガスを燃焼
する触媒と、（ｄ）ハウジング内で、上下に延び、蓄熱
材と触媒とを周方向に間隔をあけて仕切って通路を形成
し、ハウジングの上部で共通の空間に連通する仕切板
と、（ｅ）ハウジングの下部に設けられ、仕切板によっ
て仕切られた前記各通路に蓄熱材の周方向に順次的に被
処理ガスを供給するとともに、その被処理ガスを供給す
る通路から周方向にずれた他の通路からの浄化されたガ
スを導く、通路の周方向の切換え速度が可変である切換
え弁とを備える蓄熱式触媒燃焼装置の制御装置であっ
て、（ｆ）前記共通の空間の温度を検出する手段と、
（ｇ）温度検出手段の出力に応答し、切換え弁の切換え
速度を制御する手段とを含むことを特徴とする蓄熱式触
媒燃焼装置の制御装置である。The present invention also includes (a) a housing,
(B) a heat storage material housed in the housing, (c) a catalyst that is provided above the heat storage material in the housing and burns the gas to be treated, and (d) a heat storage material that extends vertically in the housing. A partition plate that divides the catalyst in the circumferential direction at intervals to form a passage, and communicates with a common space at the upper part of the housing, and (e) each of the passages provided at the lower part of the housing and partitioned by the partition plate. To be supplied with the gas to be treated sequentially in the circumferential direction of the heat storage material, and to introduce purified gas from another passage that is displaced from the passage for supplying the gas to be treated in the circumferential direction of the passage. A control device for a heat storage type catalytic combustion device, comprising: a switching valve having a variable speed; (f) means for detecting the temperature of the common space;
(G) Means for controlling the switching speed of the switching valve in response to the output of the temperature detecting means.
【０００７】また本発明は、蓄熱材の水当量Ｗｒと被処
理ガスの水当量Ｗｃとの水当量比Ｗｒ／Ｗｃを約５未満
に選ぶことを特徴とする。Further, the present invention is characterized in that the water equivalent ratio Wr / Wc between the water equivalent Wr of the heat storage material and the water equivalent Wc of the gas to be treated is selected to be less than about 5.
【０００８】また本発明は、（ａ）切換え弁は、（ａ
１）上下の軸線方向に一対の部屋を有し、各部屋に接続
口がそれぞれ設けられる弁箱と、（ａ２）弁箱に収納さ
れる弁体であって、前記軸線まわりに回転される回転軸
と、軸線方向に一方の前記部屋から遠去った他方の前記
部屋に臨む位置で回転軸に固定され、前記軸線まわりに
周方向に間隔をあけて形成される第１および第２移動弁
孔を有する移動弁部材と、回転軸に固定され、前記他方
の部屋内に設けられ、前記一方の部屋を第１移動弁孔に
連通する案内空間を形成して、その案内空間を前記他方
の部屋と仕切り、前記他方の部屋を第２移動弁孔に連通
する隔壁とを有する弁体と、（ａ３）ハウジングの下部
に、移動弁部材に対向して固定され、前記軸線まわりに
周方向に間隔をあけて第１および第２移動弁孔に重なっ
て連通することができる複数の固定弁孔が形成される固
定弁部材とを有し、（ｂ）切換え弁の下部は、固定弁部
材に固定され、（ｃ）被処理ガスが、前記一方または前
記他方のいずれかの部屋に供給され、いずれか残余の部
屋から浄化されたガスを導き、（ｄ）回転軸を回転駆動
する駆動手段とを含み、（ｅ）制御手段は、駆動手段に
よる回転軸の回転速度を制御することを特徴とする。According to the present invention, (a) the switching valve is (a)
1) A valve box having a pair of chambers in the upper and lower axial directions, each of which is provided with a connection port, and (a2) a valve body housed in the valve box, which is rotated about the axis. A first movable valve hole and a second movable valve hole fixed to the rotating shaft at a position facing the shaft and the other chamber away from one of the chambers in the axial direction, and being circumferentially spaced around the axis. And a moving valve member having a rotary shaft, and is provided in the other chamber, and forms a guide space that communicates the one chamber with the first moving valve hole, and the guide space is formed in the other chamber. And a valve body having a partition wall that connects the other chamber to the second moving valve hole, and (a3) is fixed to the lower part of the housing so as to face the moving valve member, and is circumferentially spaced about the axis. And the first and second moving valve holes can be overlapped to communicate with each other. A fixed valve member having a plurality of fixed valve holes formed therein, (b) the lower portion of the switching valve is fixed to the fixed valve member, and (c) the gas to be treated is one of the one or the other. And (d) drive means for driving the rotary shaft to rotate, and (e) the control means controls the rotational speed of the rotary shaft by the drive means. It is characterized by controlling.
【０００９】[0009]
【作用】本発明に従えば、蓄熱材を収納したハウジング
の下部に、切換え弁を設け、ハウジング内では、蓄熱材
の上部に、被処理ガスの悪臭物質である有機溶剤を触媒
燃焼して酸化分解する触媒を配置し、そのハウジング内
を、仕切板によって、蓄熱材と触媒とを含む通路を形成
し、この通路を、切換え弁によって周方向に順次的に切
換えてゆくことによって、有機溶剤を含む被処理ガス
は、蓄熱された蓄熱材に通過させてその蓄熱されている
熱を被処理ガスに吸熱させ、触媒によって有機溶剤を酸
化分解し、さらに必要に応じて加熱手段、たとえばバー
ナまたは電気ヒータによって加熱して酸化分解を確実に
し、その高温度に浄化されたガスは、蓄熱材に導かれて
蓄熱材を加熱して蓄熱を行い、浄化されたガスは冷却さ
れ、こうして被処理ガスの連続的な運転が可能になる。
特にこのような構成では、蓄熱材が回転する構成ではな
いので、シールなどの構成を容易に行うことができる。According to the present invention, the switching valve is provided in the lower part of the housing containing the heat storage material, and in the housing, the organic solvent, which is a malodorous substance of the gas to be treated, is catalytically burned and oxidized in the upper part of the heat storage material. A catalyst to be decomposed is arranged, a partition plate forms a passage containing the heat storage material and the catalyst in the housing, and the passage is sequentially switched in the circumferential direction by a switching valve to remove the organic solvent. The gas to be treated is passed through a heat storage material in which heat is stored, and the stored heat is absorbed by the gas to be treated, the organic solvent is oxidatively decomposed by a catalyst, and if necessary, heating means such as a burner or an electric machine. The gas that has been heated by a heater to ensure oxidative decomposition and purified to a high temperature is guided to the heat storage material to heat the heat storage material to store heat, and the purified gas is cooled and thus treated. Continuous operation of the scan is possible.
In particular, in such a configuration, since the heat storage material is not a rotating configuration, a configuration such as a seal can be easily performed.
【００１０】特に本発明に従えば、仕切板によって形成
された複数の通路の上部の共通の空間の温度が高いとき
には、切換え弁の切換え速度を低下し、これによって蓄
熱材の水当量Ｗｒと被処理ガスの水当量Ｗｃとの比Ｗｒ
／Ｗｃを小さくし、熱交換効率を低下させる。したがっ
て前記共通の空間における温度を低下させることがで
き、その空間における温度を、触媒の耐熱温度未満に保
ち、連続運転が可能になる。In particular, according to the present invention, when the temperature of the common space above the plurality of passages formed by the partition plate is high, the switching speed of the switching valve is reduced, whereby the water equivalent Wr of the heat storage material and Ratio Wr of treated gas to water equivalent Wc
/ Wc is reduced to reduce heat exchange efficiency. Therefore, the temperature in the common space can be lowered, the temperature in the space can be kept below the heat resistant temperature of the catalyst, and continuous operation becomes possible.
【００１１】したがって本発明に従えば、被処理ガスに
高濃度の有機溶剤が含まれていても、そのような被処理
ガスの浄化が、触媒を熱によって劣化させることなく、
達成することができる。Therefore, according to the present invention, even if the gas to be treated contains a high concentration of an organic solvent, purification of such a gas to be treated does not deteriorate the catalyst due to heat,
Can be achieved.
【００１２】さらに本発明に従えば、水当量比Ｗｒ／Ｗ
ｃが約５未満とすることによって、後述の図１３から明
らかなように、蓄熱材の熱交換効率を、切換え弁の切換
え速度に応じて大きく変化させることが可能となり、し
たがって被処理ガスに含まれる有機溶剤の濃度が広範囲
に変化しても、そのような被処理ガスの浄化を容易に行
うことができる。Further in accordance with the present invention, the water equivalent ratio Wr / W
By setting c to be less than about 5, it becomes possible to greatly change the heat exchange efficiency of the heat storage material in accordance with the switching speed of the switching valve, as will be apparent from FIG. Even if the concentration of the organic solvent to be treated changes over a wide range, such a gas to be treated can be easily purified.
【００１３】さらに本発明に従えば、前記共通の空間に
は、加熱手段が設けられ、予め定める第１温度、たとえ
ば３００℃未満では、その加熱温度を動作して、被処理
ガスを加熱し、有機溶剤の酸化燃焼を確実にし、その第
１温度以上では、加熱手段を停止し、被処理ガスに含ま
れる有機溶剤を自燃させて浄化し、触媒の耐熱温度、た
とえば５５０℃以下である予め定める第２の温度、たと
えば４５０℃未満では、切換え弁の切換え速度を予め定
める一定の値に保ち、その第２温度以上では、前記共通
の空間の検出温度が高くなるにつれて切換え速度を前記
予め定める一定の値未満の低い値に低下させ、その耐熱
温度未満に保ち、たとえば一定の温度になるように保
つ。Further, according to the invention, a heating means is provided in the common space, and at a first predetermined temperature, for example, less than 300 ° C., the heating temperature is operated to heat the gas to be treated, The oxidative combustion of the organic solvent is ensured, and at the first temperature or higher, the heating means is stopped, the organic solvent contained in the gas to be treated is self-combusted to be purified, and the heat-resistant temperature of the catalyst is, for example, 550 ° C. or lower. At a second temperature, for example, less than 450 ° C., the switching speed of the switching valve is maintained at a predetermined constant value, and at a second temperature or higher, the switching speed is maintained at the predetermined constant as the temperature detected in the common space increases. Is lowered to a value lower than the value of, and is kept below the heat resistant temperature, for example, is kept at a constant temperature.
【００１４】加熱手段は、予め定める第１温度未満では
動作して有機溶剤を加熱して酸化分解を確実にするけれ
ども、その第１温度以上では、加熱手段を停止して、燃
料または電力の無駄な消費を防ぐとともに、その空間の
温度の上昇を抑制し、この第１温度を超える触媒の耐熱
温度以下である温度未満では、切換え弁の切換え速度を
一定の値に保ち、第２温度以上では検出温度が高くなる
につれて切換え速度を前記予め定める一定の値未満の値
に低下して、こうして空間の温度が触媒の耐熱温度に達
することを防ぎ、触媒の劣化を防ぐ。The heating means operates below a predetermined first temperature to heat the organic solvent to ensure oxidative decomposition, but above the first temperature, the heating means is stopped to waste fuel or electric power. The temperature rise in the space is suppressed, and the switching speed of the switching valve is maintained at a constant value at a temperature lower than the heat resistant temperature of the catalyst above the first temperature, and above the second temperature. As the detected temperature becomes higher, the switching speed is reduced to a value less than the predetermined constant value, thus preventing the temperature of the space from reaching the heat resistant temperature of the catalyst and preventing the deterioration of the catalyst.
【００１５】本発明に従う切換え弁では弁箱は軸線方向
に一対の部屋が形成されており、一方の部屋の接続口か
ら、たとえば被処理ガスなどの流体が供給されるとき、
弁体の隔壁によって仕切られた案内空間から、たとえば
板状の移動弁部材の第１移動弁孔を経て、さらに弁箱に
固定されている固定弁部材の固定弁孔を経て通路形成手
段によって形成された各固定弁孔毎の通路を経て導かれ
る。また他の固定弁孔に連通して設けられた通路からの
たとえば清浄なガスなどの流体は、前記他の固定弁孔か
ら移動弁部材の第２移動弁孔を経て、弁箱の他方の部屋
から、その他方の部屋の接続口を経て導かれる。こうし
て弁体の回転軸をその軸線まわりに回転することによっ
て、固定弁部材に形成されている複数の固定弁孔を順次
的に切換えて、流体の通路を順次的に切換えてゆくこと
ができる。In the switching valve according to the present invention, the valve box has a pair of chambers formed in the axial direction, and when a fluid such as a gas to be treated is supplied from the connection port of one chamber,
Formed by the passage forming means from the guide space partitioned by the partition wall of the valve body, through the first moving valve hole of the plate-like moving valve member, and further through the fixed valve hole of the fixed valve member fixed to the valve box. The fixed valve holes are guided through the corresponding passages. A fluid such as a clean gas from a passage provided in communication with the other fixed valve hole passes through the second fixed valve hole of the fixed valve hole and the second movable valve hole of the movable valve member to the other chamber of the valve box. From the other room through the connection port. By rotating the rotary shaft of the valve element around its axis in this manner, the plurality of fixed valve holes formed in the fixed valve member can be sequentially switched, and the fluid passages can be sequentially switched.
【００１６】[0016]
【実施例】図１は本発明の一実施例の蓄熱式触媒燃焼装
置５０の全体の構成を簡略化して示す断面図であり、併
せてその制御装置の系統図であり、図２はその蓄熱式触
媒燃焼装置５０の下部付近の切換え弁５１を示す断面図
であり、図３はその蓄熱式触媒燃焼装置５０の内部の構
成を簡略化して示す斜視図である。これらの図面を参照
して、上下に延びる大略的に直円筒状のハウジング５２
内には、セラミック粒またはラシヒリングなどの蓄熱材
５３が収納され、その蓄熱材５３の上部には被処理ガス
の悪臭成分を熱分解する触媒５４が配置される。触媒５
４は、たとえばペレット状またはハニカム状の基材の表
面に白金またはパラジウムを被覆した構成を有していて
もよい。このハウジング５２内には上下に伸びて蓄熱材
５３と触媒５４とを、周方向に等間隔をあけて仕切って
通路を形成する複数（この実施例では合計８枚）の仕切
板５５が設けられる。この仕切板５５の上部は、ハウジ
ング５２の上部に取付けられたたとえば中空逆円錐台状
の隔壁５６によって形成された燃焼室５７に、各連通孔
５８を介して連通するように固定される。ハウジング５
２の頂部には、加熱手段としてのたとえば電熱器または
バーナ５９が設けられ、バーナ５９を用いるときには管
路１２８から流量制御弁１２９を介して、ガスまたは液
体の燃料が燃焼される。隔壁５６の下部には中空の筒体
６０が固定される。悪臭物質を含む被処理ガスはハウジ
ング５２の下部に設けられる切換え弁５１の接続口６１
から供給され、浄化されたガスは接続口６２から導き出
される。切換え弁５１において、上下に延びる鉛直回転
軸線６３に同軸の大略的に直円筒状の弁箱６４が設けら
れる。この弁箱６４内には接続口６１，６２にそれぞれ
連通した一対の部屋６５，６６が形成される。弁箱６４
内には、軸線６３まわりに回転駆動される弁体６７が収
納される。この弁体６７は、基本的には、回転軸６８
と、円板状の移動弁部材６９と、隔壁７０とを有し、さ
らに切換え弁５１の構成要素である固定弁部材７１がハ
ウジング５２の下部の鏡板７２に固定される。回転軸６
８は、弁箱６４の端板７３にスラスト力を受けることが
できる軸受７４によって支持され、また鏡板７２と一体
的に固定されるハウジング５２内の支持体７５に軸受７
６によって回転自在に支持される。回転軸６８はスプロ
ケットホイル７７に固定され、チェーン７８が巻掛けら
れ、スプロケットホイル７９は駆動源８０によって回転
駆動される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic sectional view showing the overall construction of a heat storage type catalytic combustion apparatus 50 according to an embodiment of the present invention, together with a system diagram of its control apparatus, and FIG. FIG. 4 is a cross-sectional view showing a switching valve 51 near a lower portion of the catalytic storage device 50, and FIG. 3 is a perspective view showing a simplified internal configuration of the heat storage catalytic combustion device 50. With reference to these drawings, a substantially straight cylindrical housing 52 extending vertically is provided.
A heat storage material 53 such as ceramic particles or Raschig rings is housed therein, and a catalyst 54 for thermally decomposing the malodorous component of the gas to be treated is disposed above the heat storage material 53. Catalyst 5
4 may have a configuration in which the surface of a pellet-shaped or honeycomb-shaped base material is coated with platinum or palladium. Inside the housing 52, a plurality of (in this embodiment, eight in total) partition plates 55 are provided which vertically extend to partition the heat storage material 53 and the catalyst 54 at equal intervals in the circumferential direction to form passages. . The upper portion of the partition plate 55 is fixed so as to communicate with the combustion chamber 57 formed by, for example, a partition 56 having a hollow inverted truncated cone shape attached to the upper portion of the housing 52, through the respective communication holes 58. Housing 5
An electric heater or a burner 59 as a heating means is provided at the top of 2, and when the burner 59 is used, gas or liquid fuel is combusted from the conduit 128 via the flow control valve 129. A hollow cylinder body 60 is fixed to the lower portion of the partition wall 56. The gas to be treated containing the malodorous substance is connected to the connection port 61 of the switching valve 51 provided at the bottom of the housing 52.
The gas supplied and purified from the connection port 62 is led out from the connection port 62. In the switching valve 51, a valve cylinder 64 having a substantially right cylindrical shape coaxial with a vertically extending vertical rotation axis 63 is provided. In the valve box 64, a pair of chambers 65 and 66 that communicate with the connection ports 61 and 62, respectively, are formed. Valve box 64
A valve body 67 that is driven to rotate around the axis 63 is housed therein. This valve body 67 basically has a rotating shaft 68.
A fixed valve member 71, which is a component of the switching valve 51, is fixed to the end plate 72 below the housing 52. Rotating shaft 6
8 is supported by a bearing 74 capable of receiving a thrust force on the end plate 73 of the valve box 64, and the bearing 7 is supported by a support body 75 in a housing 52 fixed integrally with the end plate 72.
It is rotatably supported by 6. The rotating shaft 68 is fixed to a sprocket wheel 77, a chain 78 is wound around the sprocket wheel 77, and a sprocket wheel 79 is rotationally driven by a drive source 80.
【００１７】図４は、図１の切断面線ＩＶ−ＩＶから見
た断面図である。固定弁部材７１は、周方向に複数（実
施例では８）等分されて角度θ２だけあけて合計８つの
固定弁孔８２が形成される。隣接する相互の固定弁孔８
２の間隔は、周方向に第３角度θ３だけあけて形成され
る。この実施例ではθ２＝θ３＝２２．５°である。仕
切板５５は、固定弁孔８２相互間で、固定弁部材７１の
上面に、周方向に４５°の間隔をあけて固定され、こう
してハウジング５２内に８等分された上下に延びる通路
８４を形成し、各通路８４は、固定弁孔８２に個別的に
連通している。FIG. 4 is a sectional view taken along section line IV-IV in FIG. The fixed valve member 71 is equally divided into a plurality (8 in the embodiment) in the circumferential direction and opened at an angle θ2 to form a total of eight fixed valve holes 82. Adjacent mutual fixed valve holes 8
The interval of 2 is formed with a third angle θ3 in the circumferential direction. In this embodiment, θ2 = θ3 = 22.5 °. The partition plate 55 is fixed to the upper surface of the fixed valve member 71 between the fixed valve holes 82 at intervals of 45 ° in the circumferential direction, and thus has a vertically extending passage 84 divided into eight parts in the housing 52. Formed, each passage 84 communicates individually with a fixed valve hole 82.
【００１８】図５は弁体６７の簡略化した斜視図であ
り、図６はその弁体６７の平面図であり、図７はその弁
体６７の底面図である。これらの図面を参照して、移動
弁部材６９は円板状であって、部屋６６に臨む位置で回
転軸６８に固定される。この移動弁部材６９には、軸線
６３まわりに周方向に第１移動弁孔８６，８７と第２移
動弁孔８８，８９が形成され、さらにこれらの第１およ
び第２移動弁孔８６，８７；８８，８９から周方向に間
隔をあけて第３移動弁孔９０が形成される。FIG. 5 is a simplified perspective view of the valve body 67, FIG. 6 is a plan view of the valve body 67, and FIG. 7 is a bottom view of the valve body 67. Referring to these drawings, the moving valve member 69 has a disc shape and is fixed to the rotating shaft 68 at a position facing the chamber 66. The moving valve member 69 is formed with first moving valve holes 86, 87 and second moving valve holes 88, 89 in the circumferential direction around the axis 63, and further, these first and second moving valve holes 86, 87. 88th and 89th, the third movement valve hole 90 is formed at a circumferential interval.
【００１９】隔壁７０は、個別的には円弧状の隔壁７０
ａと平板状の隔壁７０ｂ，７０ｃとを含み、総括的には
参照符７０で示すことがある。隔壁７０ａは、大略的に
中空円錐台状の一部を構成する形状を有し、その上部
は、移動弁部材６９の下面に固定され、同様に平板状の
隔壁７０ｂ，７０ｃもまた移動弁部材６９の下面に固定
され、さらに隔壁７０ｂ，７０ｃは、回転軸６８の外周
面に軸線方向に沿って固着され、こうして部屋６５を第
１移動弁孔８６，８７に連通する案内空間９１を形成す
る。この案内空間９１は、前記隔壁７０によってもう１
つの部屋６６と気密に仕切る。隔壁７０ａの下部には、
もう１つの隔壁９２が固定されており、この隔壁９２に
は、案内空間９１を部屋６５に連通する連通孔９３が形
成される。隔壁９２はまた、案内空間９１の外方で各部
屋６５，６６を仕切る。隔壁９２の外周部には短筒部９
４が固定され、その短筒部９４の外周部と弁箱６４に形
成された隔壁９５との間にはシール材９６が設けられ、
気密性が達成される。The partition walls 70 are individually arcuate partition walls 70.
It includes a and the plate-shaped partition walls 70b and 70c, and may be generally denoted by reference numeral 70. The partition wall 70a has a shape that substantially forms a part of a hollow truncated cone shape, and its upper portion is fixed to the lower surface of the moving valve member 69. Similarly, the partition walls 70b and 70c having a flat plate shape also move valve member. The partition walls 70b and 70c are fixed to the lower surface of 69, and further fixed to the outer peripheral surface of the rotary shaft 68 along the axial direction, thus forming a guide space 91 that communicates the chamber 65 with the first moving valve holes 86 and 87. . This guide space 91 is further divided by the partition wall 70.
Airtightly separate from one room 66. At the bottom of the partition 70a,
Another partition wall 92 is fixed, and a communication hole 93 that connects the guide space 91 to the room 65 is formed in the partition wall 92. The partition wall 92 also partitions the rooms 65 and 66 outside the guide space 91. The short tubular portion 9 is provided on the outer peripheral portion of the partition wall 92.
4 is fixed, and a sealing material 96 is provided between the outer peripheral portion of the short tubular portion 94 and the partition wall 95 formed in the valve box 64,
Airtightness is achieved.
【００２０】移動弁部材６９の上部には、軸線６３まわ
りに同心に環状の内シール材１０４ａと環状の外シール
材１０４ｂが設けられ、さらに半径方向に延びるシール
材９７，９８、さらには補助シール材９９，１００が設
けられ、またシール材１０１，１０２が設けられる。シ
ール材９７は、図８にその断面が示されるように移動弁
部材６９に収納孔１０３が形成され、その内部にシール
材９７が埋込まれて固定される。シール材９７の上部
は、固定弁部材７１の下面に弾発的に摺接して気密性を
達成することができる。このシール材９７は、たとえば
Ｏリングであってもよく、その他の構成であってもよ
い。An annular inner seal material 104a and an annular outer seal material 104b are provided concentrically around the axis 63 on the upper portion of the moving valve member 69, and further extend in the radial direction with seal materials 97 and 98, and further an auxiliary seal. Materials 99 and 100 are provided, and sealing materials 101 and 102 are provided. The sealing material 97 has a storage hole 103 formed in the moving valve member 69 as shown in the cross section of FIG. 8, and the sealing material 97 is embedded and fixed in the storage hole 103. The upper portion of the sealing material 97 can elastically slide against the lower surface of the fixed valve member 71 to achieve airtightness. The sealing material 97 may be, for example, an O-ring, or may have another configuration.
【００２１】第３移動弁孔９０の周方向両側にあるシー
ル材９７，９８の周方向の角度θ１とし、この実施例で
はθ１＝２２．５°である。また各シール材９７，９８
の周方向に前記角度θ１をそれぞれあけて前述の補助シ
ール材９９，１００が設けられる。さらにシール材９
７，９８に関して軸線６３の線対称にシール材１０１，
１０２が設けられる。シール材１０１，１０２の周方向
の角度θ４は、この実施例では２２．５°である。こう
してシール材１０４ａ，１４０ｂ；９７，９８；９９，
１００；１０１，１０２は、対称面１０５に関して面対
称に配置される。The angle θ1 in the circumferential direction of the sealing materials 97 and 98 on both sides of the third moving valve hole 90 in the circumferential direction is θ1 = 22.5 ° in this embodiment. In addition, each sealing material 97, 98
The auxiliary sealing materials 99 and 100 described above are provided with the angle θ1 opened in the circumferential direction. Further sealing material 9
7,98 and the sealing material 101 in line symmetry with the axis 63,
102 is provided. The angle θ4 in the circumferential direction of the sealing materials 101 and 102 is 22.5 ° in this embodiment. In this way, the sealing materials 104a, 140b; 97, 98; 99,
100; 101 and 102 are arranged in plane symmetry with respect to the plane of symmetry 105.
【００２２】再び図１を参照して、回転軸６８には、軸
線６３に沿う軸孔１０６が形成され、その下部には回転
管継手１０７が接続される。回転管継手１０７には管路
１０８を介してパージ用空気が圧送される。回転軸６８
の上部の接続孔１０９は、補助隔壁１１０によって形成
された連通路１１１によって、第３移動弁孔９０に連通
する。Referring again to FIG. 1, the rotary shaft 68 is formed with a shaft hole 106 extending along the axis 63, and a rotary pipe joint 107 is connected to the lower portion thereof. Purging air is pressure-fed to the rotary pipe joint 107 via a pipe 108. Rotating shaft 68
The upper connection hole 109 is communicated with the third movement valve hole 90 by the communication passage 111 formed by the auxiliary partition 110.
【００２３】図９は、図１の切断面線ＩＸ−ＩＸから見
た弁体６７の一部を示す断面図である。補助隔壁１１０
は、隔壁７０ｂと移動弁部材６９の下面とにわたって固
定され、連通路１１１は、第３移動弁孔９０と軸孔１０
６とを接続孔１０９を介して連通する。FIG. 9 is a sectional view showing a part of the valve body 67 as seen from the section line IX-IX in FIG. Auxiliary partition 110
Is fixed across the partition wall 70b and the lower surface of the moving valve member 69, and the communication passage 111 includes the third moving valve hole 90 and the shaft hole 10.
6 and 6 through the connection hole 109.
【００２４】図１０は、図２の切断面線Ｘ−Ｘから見た
断面図である。ハウジング５２内の仕切板５５によって
仕切られた合計８つの通路８４には、前述のように蓄熱
材５３およびその上部に触媒５４が収納されており、切
換え弁５１の働きによって、被処理ガスが蓄熱材５３に
蓄熱された熱を吸熱して上昇する領域１１３〜１１５
と、パージ領域１１６と、悪臭成分が酸化分解されて浄
化されたガスが下降し、蓄熱材５３に放熱して蓄熱させ
る領域１１７〜１１９と、気密性を達成するために働く
いわゆるデッドゾーン１２０とが、形成される。FIG. 10 is a sectional view taken along the line XX of FIG. As described above, the heat storage material 53 and the catalyst 54 are stored in the eight passages 84 that are partitioned by the partition plate 55 in the housing 52, and the gas to be processed accumulates heat by the operation of the switching valve 51. Areas 113 to 115 in which the heat stored in the material 53 is absorbed and rises
A purge region 116, regions 117 to 119 in which a gas purified by oxidative decomposition of a malodorous component descends and radiates heat to the heat storage material 53 to store heat, and a so-called dead zone 120 that functions to achieve airtightness. Are formed.
【００２５】切換え弁５１の弁体６７は、矢符１２１の
方向に回転駆動される。すなわちこの弁体６７は、図６
に示される第３移動弁孔９０、したがってパージ領域１
１６に関して、被処理ガスが供給される部屋６５および
案内空間９１、したがって上昇領域１１３〜１１５が回
転方向下流側（前方、すなわち図１０の時計方向）にな
るように、回転駆動される。これによって悪臭物質を含
む被処理ガスが上昇して供給されていた領域１１５内に
残留している被処理ガスが、パージ領域１１６でパージ
用空気が上昇されて浄化された後、下降領域１１７に、
悪臭物質の酸化分解後の浄化されたガスが導かれること
になり、したがって部屋６６に悪臭物質を含む被処理ガ
スが混入することが防がれる。The valve body 67 of the switching valve 51 is rotationally driven in the direction of arrow 121. That is, this valve body 67 is shown in FIG.
The third transfer valve hole 90 shown in FIG.
With respect to 16, the chamber 65 and the guide space 91 to which the gas to be processed is supplied, and hence the rising regions 113 to 115, are rotationally driven so as to be on the downstream side in the rotational direction (forward, that is, clockwise in FIG. 10). As a result, the target gas remaining in the region 115 to which the target gas containing the malodorous substance has risen and has been supplied is purified in the purge region 116 by raising the purging air and purifying it into the lowering region 117. ,
The purified gas after the oxidative decomposition of the malodorous substance is introduced, and therefore, the gas to be treated containing the malodorous substance is prevented from being mixed into the chamber 66.
【００２６】図１１は、切換え弁５１における移動弁部
材６９と固定弁部材７１との周方向展開図である。この
図１１（１）では、パージ領域１１６には、第３移動弁
孔９０および固定弁孔８２を経てパージ用空気が上昇さ
れている。参照符８２ａで示される固定弁孔８２ａは、
シール材１０１，１０２で気密とされ、デッドゾーン１
２０には、被処理ガスおよび浄化されたガスが混入して
流れることはない。FIG. 11 is a circumferential development view of the movable valve member 69 and the fixed valve member 71 in the switching valve 51. In FIG. 11 (1), the purge air is raised in the purge region 116 through the third moving valve hole 90 and the fixed valve hole 82. The fixed valve hole 82a indicated by reference numeral 82a is
It is made airtight by the sealing materials 101 and 102, and the dead zone 1
The gas to be treated and the purified gas do not flow into the 20 by mixing.
【００２７】次に図１１（２）に示されるように移動弁
部材６９が連続的に移動している途中において、パージ
領域１１６には、パージ用空気が引続き供給されてい
る。こうしてパージ領域１１６に残留している被処理ガ
スがハウジング５２の上部にパージ用空気で移動されて
悪臭物質の酸化分解が終了した後には、図１１（３）に
示されるようにシール材９７，９８はパージ用空気が流
過していた固定弁孔８２に隣接する固定弁部材７１の部
分１２３に接触し、パージ領域１１６には、浄化された
ガスが下降して流れることができる状態となる。Next, as shown in FIG. 11 (2), purging air is continuously supplied to the purge region 116 while the moving valve member 69 is continuously moving. After the gas to be treated remaining in the purge region 116 is moved to the upper part of the housing 52 by the purge air to complete the oxidative decomposition of the malodorous substance, the sealing material 97, as shown in FIG. 98 contacts the portion 123 of the fixed valve member 71 adjacent to the fixed valve hole 82 through which the purging air has flown, and the purified gas is allowed to flow down and flow into the purge region 116. .
【００２８】移動弁部材６９がさらに回転することによ
って図１１（４）に示されるように、パージ領域は、被
処理ガスが上昇していた領域１１５に移る。こうして被
処理ガスが上昇領域１１５から下降領域１１７に直接に
漏れることがなくなる。このことはシール材１０１，１
０２の働きによるデッドゾーン１２０においても同様で
ある。As the moving valve member 69 further rotates, the purge region moves to the region 115 where the gas to be treated has risen, as shown in FIG. 11 (4). In this way, the gas to be processed does not leak directly from the ascending region 115 to the descending region 117. This means that the sealing material 101,1
The same applies to the dead zone 120 by the function of 02.
【００２９】上述の実施例では部屋６５には被処理ガス
が供給され、浄化されたガスは部屋６６に導かれて排出
されるように構成されたけれども、本発明の他の実施例
として、上述の実施例とは逆に部屋６６に被処理ガスが
供給され、浄化されたガスが部屋６５から導かれて排出
されるように構成されてもよい。In the above-described embodiment, the gas to be treated is supplied to the room 65, and the purified gas is guided to the room 66 and discharged. However, as another embodiment of the present invention, On the contrary to the above embodiment, the gas to be treated may be supplied to the chamber 66, and the purified gas may be guided from the chamber 65 and discharged.
【００３０】上述の実施例では、θ１＝θ２＝θ３に選
ばれたけれども、本発明に従えば、 θ１ ≧ θ２、かつ θ３ ≧ θ２ に選ぶことによって、ガスの相互の漏洩を防ぐことがで
きる。さらに本発明に従えば、 θ３ ＞ θ２ として、固定弁部材７１の開孔率を５０％未満とし、ガ
スの漏洩をさらに一層確実に防ぐようにしてもよい。In the above embodiment, θ1 = θ2 = θ3 was selected, but according to the present invention, mutual leakage of gas can be prevented by selecting θ1 ≧ θ2 and θ3 ≧ θ2. Further, according to the present invention, θ3> θ2 may be set, and the aperture ratio of the fixed valve member 71 may be set to less than 50% to prevent the gas leakage more reliably.
【００３１】有機溶剤を含む被処理ガスを、触媒５４を
用いて、さらにはバーナ５９を用いて燃焼すると、その
被処理ガスに含まれている有機溶剤の燃焼熱によって被
処理ガスの温度が図１２に示されるように上昇する。上
述の実施例における蓄熱式触媒燃焼装置５０において、
定常状態における反応温度は、一般的に約３００〜３５
０℃であり、触媒５４の耐熱温度は約５５０℃である。When the gas to be treated containing the organic solvent is burned by using the catalyst 54 and further by the burner 59, the temperature of the gas to be treated is controlled by the heat of combustion of the organic solvent contained in the gas to be treated. It rises as shown at 12. In the heat storage type catalytic combustion apparatus 50 in the above embodiment,
The reaction temperature at steady state is generally about 300-35.
It is 0 ° C., and the heat resistant temperature of the catalyst 54 is about 550 ° C.
【００３２】蓄熱式触媒燃焼装置の性能は、式１で定義
される熱交換効率φによって表される。The performance of the heat storage type catalytic combustion apparatus is represented by the heat exchange efficiency φ defined by the equation (1).
【００３３】 φ ＝ （ｔｃ２* −ｔｃ１）／（ｔｈ１−ｔｃ１） …（１） ここにｔはガスの温度〔℃〕で、添字のｃとｈはそれぞ
れ低温側および高温側を表し、１と２は入口および出口
を表す。ｔｃ２* は低温側ガスの出口平均温度である。Φ = (tc2 * −tc1) / (th1-tc1) (1) where t is the temperature of the gas [° C.], and the subscripts c and h represent the low temperature side and the high temperature side, respectively. 2 represents an inlet and an outlet. tc2 * is the outlet average temperature of the low temperature side gas.
【００３４】図１３は、蓄熱式触媒燃焼装置５０の熱交
換効率を示すグラフである。この熱交換効率φの値は、
ガスの比熱や熱伝達率が時間と位置にかかわらず一定
で、漏れやcarry overによる損失がないとして算出した
ものである。図中のＮＴＵ0 は修正、ＮＴＵまたは Ovr
e-all Number of Transfer Unit と呼ばれる無次元数
で、式２で定義されるものである。FIG. 13 is a graph showing the heat exchange efficiency of the heat storage type catalytic combustion apparatus 50. The value of this heat exchange efficiency φ is
It is calculated assuming that the specific heat and heat transfer coefficient of gas are constant regardless of time and position, and there is no loss due to leakage or carry over. NTU 0 in the figure is modified, NTU or Ovr
It is a dimensionless number called e-all Number of Transfer Unit and is defined by Equation 2.
【００３５】[0035]
【数１】 [Equation 1]
【００３６】ここにｈは熱伝達率〔ｋｃａｌ／ｍ2・ｈ
・℃〕、Ａは伝熱面積〔ｍ2〕である。またＷｃは一方
のガス、すなわち被処理ガスまたはその浄化された後の
ガスの水当量、Ｗｒは蓄熱材５３の水当量で、それぞれ
式３および式４で与えられる。Where h is the heat transfer coefficient [kcal / m 2 · h
· ° C.], A is the heat transfer area [m 2]. Wc is the water equivalent of one gas, that is, the gas to be treated or its purified gas, and Wr is the water equivalent of the heat storage material 53, which are given by Equations 3 and 4, respectively.
【００３７】 Ｗｃ ＝ Ｇ・ｃｐ …（３） Ｗｒ ＝ ｎ・Ｍｒ・ｃｒ …（４） ただしｎは切換え弁５１の弁体６７の回転速度、したが
って切換え速度〔ｒｐｈ〕であり、Ｇとｃｐは一方のガ
スの重量流量〔ｋｇｆ／ｈ〕と定圧比熱〔ｋｃａｌ／ｋ
ｇｆ・℃〕であり、Ｍｒとｃｒは蓄熱材５３の全重量
〔ｋｇｆ〕と比熱である。Wc = G · cp (3) Wr = n · Mr · cr (4) where n is the rotation speed of the valve body 67 of the switching valve 51, and thus the switching speed [rph], and G and cp are One gas's weight flow rate [kgf / h] and constant pressure specific heat [kcal / k]
gf · ° C.], and Mr and cr are the total weight [kgf] of the heat storage material 53 and the specific heat.
【００３８】表１は、蓄熱式触媒燃焼装置５０の運転状
況１〜４を示す。Table 1 shows operating conditions 1 to 4 of the heat storage type catalytic combustion apparatus 50.
【００３９】[0039]
【表１】 [Table 1]
【００４０】蓄熱式触媒燃焼装置５０を、切換え弁５１
の切換え速度６０ｒｐｈおよび水当量比Ｗｒ／Ｗｃ＝
５．０で熱交換効率φ＝９０％になるように設計した場
合において、接続口６１における被処理ガスの入口温度
ｔｃ１＝２０℃であって、バーナ５９によって燃焼室５
７を３００℃に温度制御しているとき、接続口６２から
の浄化されたガスの出口温度ｔｈ２は、式５で示される
ように４８℃である。The heat storage type catalytic combustion apparatus 50 is provided with a switching valve 51.
Switching speed of 60 rph and water equivalent ratio Wr / Wc =
When the heat exchange efficiency is designed to be φ = 90% at 5.0, the inlet temperature tc1 of the gas to be treated at the connection port 61 is 20 ° C., and the burner 59 allows the combustion chamber 5
When the temperature of 7 is controlled to 300 ° C., the outlet temperature th2 of the purified gas from the connection port 62 is 48 ° C. as shown in the equation 5.
【００４１】 ｔｈ２ ＝ ２０＋（３００−２０）×０．１ ＝ ４８ …（５） したがって接続口６１，６２の温度差ΔＴ（＝ｔｈ２−
ｔｃ１）は２８℃であり、この温度差ΔＴ＝２８℃に相
当する発熱量の有機溶剤の濃度であるとき、バーナ５９
を動作させる必要はなく、被処理ガスは自燃する。たと
えば有機溶剤がトルエンであるとき、図１２から、被処
理ガス温度上昇２８℃に相当する濃度は２３０ｐｐｍで
あることが判る。したがってトルエンが２３０ｐｐｍ含
まれている被処理ガスでは、温度差ΔＴ＝２８℃とな
る。このような動作は、表１において運転状況１として
示されている。Th2 = 20 + (300−20) × 0.1 = 48 (5) Therefore, the temperature difference ΔT (= th2-
tc1) is 28 ° C., and when the temperature difference ΔT = concentration of the organic solvent having the calorific value corresponding to 28 ° C., the burner 59
Need not be operated, and the gas to be treated self-combusts. For example, when the organic solvent is toluene, it can be seen from FIG. 12 that the concentration corresponding to the temperature rise of the gas to be treated of 28 ° C. is 230 ppm. Therefore, in the gas to be treated containing 230 ppm of toluene, the temperature difference ΔT = 28 ° C. Such an operation is shown as driving situation 1 in Table 1.
【００４２】次に運転状況２に関して説明する。被処理
ガス中の有機溶剤であるトルエンの濃度が高くなり、温
度ｔｃ２，ｔｈ１で示される反応温度が５５０℃である
とき、接続口６２における浄化されたガスの温度は、式
６で示されるように７３℃となり、温度差ΔＴ＝５３℃
となる。Next, the operating condition 2 will be described. When the concentration of toluene, which is the organic solvent, in the gas to be treated becomes high and the reaction temperature represented by the temperatures tc2 and th1 is 550 ° C., the temperature of the purified gas at the connection port 62 is as shown in Equation 6. 73 ° C and the temperature difference ΔT = 53 ° C
Becomes
【００４３】 ｔｈ２ ＝ ２０＋（５５０−２０）×０．１ ＝ ７３ …（６） この温度差ΔＴに対応するトルエン濃度は、図１２から
４３０ｐｐｍである。したがってトルエン濃度が４３０
ｐｐｍ以上の濃度になれば、触媒５４は耐熱温度以上と
なり、運転状況２を継続することはできない。Th2 = 20 + (550-20) × 0.1 = 73 (6) The toluene concentration corresponding to this temperature difference ΔT is 430 ppm from FIG. Therefore, the toluene concentration is 430
When the concentration becomes higher than ppm, the temperature of the catalyst 54 becomes higher than the heat resistant temperature, and the operating condition 2 cannot be continued.
【００４４】そこで本件発明者は、水当量比Ｗｒ／Ｗｃ
を変化することによって、熱交換効率φが変化すること
に着目し、切換え弁５１の切換え速度ｎを変化して水当
量比Ｗｒ／Ｗｃを変えることによって、有機溶剤の濃度
が上昇したときには熱交換効率φを低下させ、触媒５４
の異常昇温を防止することに成功した。こうしてトルエ
ン濃度が表１の運転状況２に比べて上昇した運転状況
３，４では、そのトルエン濃度が上昇するにつれて、切
換え弁５１の切換え速度ｎを低下させ、触媒５４の温度
を、約５５０℃に抑制している。Therefore, the inventor of the present invention has found that the water equivalent ratio Wr / Wc
Paying attention to the fact that the heat exchange efficiency φ is changed by changing the heat exchange efficiency, by changing the switching speed n of the switching valve 51 to change the water equivalent ratio Wr / Wc, the heat exchange is performed when the concentration of the organic solvent increases. The efficiency φ is reduced and the catalyst 54
We succeeded in preventing the abnormal temperature rise. In the operating conditions 3 and 4 in which the toluene concentration thus increased as compared with the operating condition 2 in Table 1, as the toluene concentration increases, the switching speed n of the switching valve 51 is decreased and the temperature of the catalyst 54 is set to about 550 ° C. Is suppressed.
【００４５】上述の運転状況１〜４を自動的に可能にす
るために、本発明に従えば、次のように構成される。図
１を再び参照して、燃焼室５７には、浄化されたガスの
温度を検出する温度検出手段１３１，１３２が設けられ
る。一方の温度検出手段１３１の出力は、制御手段１３
３の一方の制御回路１３４に与えられ、その制御回路１
３４の出力によって流量制御弁１２９の開閉動作または
流量を制御する。In order to automatically enable the above operating conditions 1 to 4, according to the present invention, the configuration is as follows. Referring again to FIG. 1, the combustion chamber 57 is provided with temperature detecting means 131, 132 for detecting the temperature of the purified gas. The output of one of the temperature detection means 131 is the control means 13
3 to one of the control circuits 134, and the control circuit 1
The output of 34 controls the opening / closing operation or flow rate of the flow rate control valve 129.
【００４６】もう１つの温度検出手段１３２の出力は、
制御手段１３３に備えられる制御回路１３５に与えら
れ、この制御回路１３５は、モータ８０の回転速度を制
御し、これに応じて弁体６７の回転速度、したがって切
換え弁５１の切換え速度を、その検出温度に対応した速
度とする。The output of the other temperature detecting means 132 is
The control circuit 135 provided in the control means 133 controls the rotation speed of the motor 80, and detects the rotation speed of the valve body 67 and thus the switching valve 51 accordingly. The speed corresponds to the temperature.
【００４７】本発明は、上述の構成を有する切換え弁５
１だけでなく、その他の構成を有する切換え弁が用いら
れてもよく、たとえば開閉弁によって、仕切り板５５に
よって仕切られた複数の各通路を切換えるように構成さ
れた切換え弁であってもよく、その他の構成であっても
よい。According to the present invention, the switching valve 5 having the above-mentioned structure
Not only one but also a switching valve having another configuration may be used, and for example, a switching valve configured to switch each of the plurality of passages partitioned by the partition plate 55 by an opening / closing valve may be used. Other configurations may be used.
【００４８】[0048]
【発明の効果】以上のように本発明によれば、切換え弁
を用いて、その仕切板によって形成された通路を周方向
に順次的に切換えてガスを導いて蓄熱式触媒燃焼装置を
実現することによって蓄熱材を移動することなく、切換
え弁の切換え動作を行わせることによって、悪臭物質で
ある有機溶剤を含む被処理ガスの浄化の連続運転が可能
となり、特に本発明では、この複数の各通路の上部の空
間の温度が高いとき、切換え速度を低下し、これとは逆
に空間の温度が低いときには切換え速度を上昇しこうし
て水当量比Ｗｒ／Ｗｃをたとえば５未満として、熱効率
を切換え速度に応じて大きく変化させることを可能と
し、こうして熱損失を生じることなく、長期間にわたる
連続運転が可能になる。As described above, according to the present invention, a heat storage type catalytic combustion apparatus is realized by using a switching valve to sequentially switch the passage formed by the partition plate in the circumferential direction to guide the gas. By performing the switching operation of the switching valve without moving the heat storage material, it is possible to continuously operate the purification of the gas to be treated containing the organic solvent that is a malodorous substance. When the temperature of the space above the passage is high, the switching speed is reduced, and conversely, when the space temperature is low, the switching speed is increased. Thus, the water equivalent ratio Wr / Wc is set to less than 5, for example, and the thermal efficiency is changed to the switching speed. It is possible to make a large change in accordance with the above, and thus continuous operation for a long period of time is possible without causing heat loss.
【００４９】しかも本発明によれば、被処理ガスに含ま
れている有機溶剤の濃度が広範囲に変化しても、また高
濃度の有機溶剤が含まれていても、そのような被処理ガ
スを確実に浄化することがきわめて容易である。Moreover, according to the present invention, even if the concentration of the organic solvent contained in the gas to be treated changes over a wide range or even if the organic solvent has a high concentration, such a gas to be treated is treated. It is extremely easy to clean surely.
【００５０】また本発明によれば、このような共通の空
間の温度を温度検出手段によって検出し、制御手段によ
って切換え弁の切換え速度を変化して制御するように
し、自動的な連続運転が可能となる。Further, according to the present invention, the temperature of such a common space is detected by the temperature detecting means, and the control means changes the switching speed of the switching valve to control the automatic continuous operation. Becomes
【００５１】さらに本発明によれば、弁箱に形成された
一対の各部屋に流れる流体を、固定弁部材側の仕切板な
どを含む通路形成手段によって形成される固定弁孔毎の
通路に連続的に回転して切換えて流過することができ
る。Further, according to the present invention, the fluid flowing through the pair of chambers formed in the valve box is continuously connected to the passage for each fixed valve hole formed by the passage forming means including the partition plate on the fixed valve member side. It can be rotated and switched to flow.
【００５２】さらに本発明によれば、切換え弁の構成が
簡単であり、また高温度のガスが流れることはなく、熱
歪みの悪影響をなくすことができる。Further, according to the present invention, the structure of the switching valve is simple, the high temperature gas does not flow, and the adverse effect of thermal strain can be eliminated.
【００５３】また本発明によれば、大重量の蓄熱材を回
転駆動する必要はなく、軽量の弁体を回転駆動すればよ
く、その構成を簡略化し、構成を小形化することがで
き、設備費を低減することができる。Further, according to the present invention, it is not necessary to rotationally drive a large-weight heat storage material, but it is sufficient to rotationally drive a lightweight valve body, the configuration can be simplified, and the configuration can be downsized. The cost can be reduced.
【００５４】さらに本発明によれば、移動弁部材と固定
弁部材との間のシールの構成を簡単にすることができる
という優れた効果もまた、達成される。Further, according to the present invention, the excellent effect that the structure of the seal between the movable valve member and the fixed valve member can be simplified is also achieved.
【図１】本発明の一実施例の蓄熱式触媒燃焼装置５０の
全体の構成を簡略化して示す縦断面図であるとともに、
制御装置の電気的構成を示すブロック図である。FIG. 1 is a vertical cross-sectional view showing a simplified overall configuration of a heat storage type catalytic combustion apparatus 50 according to an embodiment of the present invention, and
It is a block diagram which shows the electric constitution of a control apparatus.
【図２】蓄熱式触媒燃焼装置５０における切換え弁５１
付近の縦断面図である。FIG. 2 is a switching valve 51 in the heat storage type catalytic combustion device 50.
It is a longitudinal cross-sectional view of the vicinity.
【図３】蓄熱式触媒燃焼装置５０の内部構造を簡略化し
て示す斜視図である。3 is a perspective view showing a simplified internal structure of a heat storage type catalytic combustion device 50. FIG.
【図４】図１の切断面線ＩＶ−ＩＶから見た水平断面図
である。FIG. 4 is a horizontal sectional view taken along the section line IV-IV in FIG.
【図５】弁体６７の一部の構成を示す簡略化した斜視図
である。FIG. 5 is a simplified perspective view showing a partial configuration of a valve body 67.
【図６】弁体６７の平面図である。FIG. 6 is a plan view of a valve body 67.
【図７】弁体６７の底面図である。7 is a bottom view of the valve body 67. FIG.
【図８】シール材９７の断面図である。FIG. 8 is a sectional view of a sealing material 97.
【図９】弁体６７の一部を示す図１におけるＩＸ−ＩＸ
から見た断面図である。FIG. 9 is a view showing a part of a valve body 67, IX-IX in FIG.
It is sectional drawing seen from.
【図１０】図２におけるハウジング５２の切断面線Ｘ−
Ｘから見た簡略化した断面図である。FIG. 10 is a sectional view taken along line X- of the housing 52 in FIG.
It is the simplified sectional view seen from X.
【図１１】切換え弁５１の動作を説明するための移動弁
部材６９および固定弁部材７１の周方向に展開した動作
を説明するための断面図である。FIG. 11 is a cross-sectional view for explaining the operation of the movable valve member 69 and the fixed valve member 71 deployed in the circumferential direction for explaining the operation of the switching valve 51.
【図１２】被処理ガスに含まれている有機溶剤の濃度
と、それに対応する温度上昇分ΔＴを示すグラフであ
る。FIG. 12 is a graph showing the concentration of the organic solvent contained in the gas to be treated and the corresponding temperature increase ΔT.
【図１３】蓄熱式触媒燃焼装置の熱交換効率φを示すグ
ラフである。FIG. 13 is a graph showing the heat exchange efficiency φ of the heat storage type catalytic combustion apparatus.
５０ 蓄熱式触媒燃焼装置 ５１ 切換え弁 ５２ ハウジング ５３ 蓄熱材 ５４ 触媒 ５５ 仕切板 ５６ 隔壁 ５７ 燃焼室 ５８ 連通孔 ６１，６２ 接続口 ６３ 軸線 ６４ 弁箱 ６５，６６ 部屋 ６７，１３３ 弁体 ６８ 回転軸 ６９ 移動弁部材 ７１ 固定弁部材 ７４，７６ 軸受 ７５ 支持体 ７７，７９ スプロケットホイル ７８ チェーン ８０ 駆動源 ８２，８２ａ 固定弁孔 ８４ 通路 ８６，８７ 第１移動弁孔 ８８，８９ 第２移動弁孔 ９０ 第３移動弁孔 ９１ 案内空間 ９７〜１０２，１０４ａ，１０４ｂ，１２４ シール材 １０７ 回転管継手 １１０ 補助隔壁 １１１ 連通路 １２９ 流量制御弁 １３１，１３２ 温度検出手段 １３３ 制御手段 １３４，１３５ 制御回路 50 heat storage type catalytic combustion device 51 switching valve 52 housing 53 heat storage material 54 catalyst 55 partition plate 56 partition wall 57 combustion chamber 58 communication hole 61, 62 connection port 63 axis 64 valve box 65, 66 room 67, 133 valve disc 68 rotary shaft 69 Moving valve member 71 Fixed valve member 74,76 Bearing 75 Support 77,79 Sprocket wheel 78 Chain 80 Drive source 82,82a Fixed valve hole 84 Passage 86,87 First moving valve hole 88,89 Second moving valve hole 90th 3 movement valve hole 91 guide space 97-102, 104a, 104b, 124 sealing material 107 rotary pipe joint 110 auxiliary partition wall 111 communication passage 129 flow control valve 131, 132 temperature detection means 133 control means 134, 135 control circuit
Claims (4)
ガスを燃焼する触媒と、 （ｄ）ハウジング内で、上下に延び、蓄熱材と触媒とを
周方向に間隔をあけて仕切って通路を形成し、ハウジン
グの上部で共通の空間に連通する仕切板と、 （ｅ）ハウジングの下部に設けられ、仕切板によって仕
切られた前記各通路に蓄熱材の周方向に順次的に被処理
ガスを供給するとともに、その被処理ガスを供給する通
路から周方向にずれた他の通路からの浄化されたガスを
導く、通路の周方向の切換え速度が可変である切換え弁
とを備える蓄熱式触媒燃焼装置の運転方法において、 （ｆ）前記共通の空間の温度に応じて切換え弁の切換え
速度を制御することを特徴とする蓄熱式触媒燃焼装置の
運転方法。1. (a) a housing; (b) a heat storage material housed in the housing; (c) a catalyst that is provided above the heat storage material in the housing and burns a gas to be treated; A partition plate that extends vertically in the housing to partition the heat storage material and the catalyst at intervals in the circumferential direction to form a passage, and that communicates with a common space at the top of the housing; and (e) is provided at the bottom of the housing. The gas to be treated is sequentially supplied to each of the passages partitioned by the partition plate in the circumferential direction of the heat storage material, and purified from other passages circumferentially displaced from the passage to which the gas to be treated is supplied. In a method of operating a heat storage type catalytic combustion apparatus, which comprises a switching valve for guiding a gas, the switching speed of which is variable in the circumferential direction of the passage, (f) controlling the switching speed of the switching valve according to the temperature of the common space. Characterized by How the operation of the thermal catalytic combustion apparatus.
ガスを燃焼する触媒と、 （ｄ）ハウジング内で、上下に延び、蓄熱材と触媒とを
周方向に間隔をあけて仕切って通路を形成し、ハウジン
グの上部で共通の空間に連通する仕切板と、 （ｅ）ハウジングの下部に設けられ、仕切板によって仕
切られた前記各通路に蓄熱材の周方向に順次的に被処理
ガスを供給するとともに、その被処理ガスを供給する通
路から周方向にずれた他の通路からの浄化されたガスを
導く、通路の周方向の切換え速度が可変である切換え弁
とを備える蓄熱式触媒燃焼装置の制御装置であって、 （ｆ）前記共通の空間の温度を検出する手段と、 （ｇ）温度検出手段の出力に応答し、切換え弁の切換え
速度を制御する手段とを含むことを特徴とする蓄熱式触
媒燃焼装置の制御装置。2. (a) a housing; (b) a heat storage material housed in the housing; (c) a catalyst that is provided above the heat storage material in the housing and burns the gas to be treated; A partition plate that extends vertically in the housing to partition the heat storage material and the catalyst at intervals in the circumferential direction to form a passage, and that communicates with a common space at the top of the housing; and (e) is provided at the bottom of the housing. The gas to be treated is sequentially supplied to each of the passages partitioned by the partition plate in the circumferential direction of the heat storage material, and purified from other passages circumferentially displaced from the passage to which the gas to be treated is supplied. A control device for a heat storage type catalytic combustion apparatus, comprising: a switching valve that guides the gas, the switching speed of which is variable in the circumferential direction of the passage, and (f) means for detecting the temperature of the common space; ) In response to the output of the temperature detection means, A control device for a heat storage type catalytic combustion apparatus, comprising: a means for controlling a switching speed of a change valve.
量Ｗｃとの水当量比Ｗｒ／Ｗｃを約５未満に選ぶことを
特徴とする請求項２記載の蓄熱式触媒燃焼装置の制御装
置。3. The control of the heat storage catalytic combustion apparatus according to claim 2, wherein the water equivalent ratio Wr / Wc between the water equivalent Wr of the heat storage material and the water equivalent Wc of the gas to be treated is selected to be less than about 5. apparatus.
方向に一対の部屋を有し、各部屋に接続口がそれぞれ設
けられる弁箱と、（ａ２）弁箱に収納される弁体であっ
て、前記軸線まわりに回転される回転軸と、軸線方向に
一方の前記部屋から遠去った他方の前記部屋に臨む位置
で回転軸に固定され、前記軸線まわりに周方向に間隔を
あけて形成される第１および第２移動弁孔を有する移動
弁部材と、回転軸に固定され、前記他方の部屋内に設け
られ、前記一方の部屋を第１移動弁孔に連通する案内空
間を形成して、その案内空間を前記他方の部屋と仕切
り、前記他方の部屋を第２移動弁孔に連通する隔壁とを
有する弁体と、（ａ３）ハウジングの下部に、移動弁部
材に対向して固定され、前記軸線まわりに周方向に間隔
をあけて第１および第２移動弁孔に重なって連通するこ
とができる複数の固定弁孔が形成される固定弁部材とを
有し、 （ｂ）切換え弁の下部は、固定弁部材に固定され、 （ｃ）被処理ガスが、前記一方または前記他方のいずれ
かの部屋に供給され、いずれか残余の部屋から浄化され
たガスを導き、 （ｄ）回転軸を回転駆動する駆動手段とを含み、 （ｅ）制御手段は、駆動手段による回転軸の回転速度を
制御することを特徴とする請求項２記載の蓄熱式触媒燃
焼装置の制御装置。4. The (a) switching valve includes (a1) a valve box having a pair of chambers in the upper and lower axial directions, each room being provided with a connection port, and (a2) a valve housed in the valve box. The body is a rotary shaft that is rotated around the axis, and is fixed to the rotary shaft at a position facing the other room that is distant from one of the chambers in the axial direction, and is circumferentially spaced around the axis. A movable valve member having first and second movable valve holes formed by being opened, and a guide space fixed to the rotation shaft, provided in the other chamber, and communicating the one chamber with the first movable valve hole. And a partition wall that separates the guide space from the other chamber and connects the other chamber to the second movable valve hole; and (a3) a lower portion of the housing, which faces the movable valve member. Are fixed and are circumferentially spaced around the axis, and A fixed valve member formed with a plurality of fixed valve holes capable of overlapping and communicating with two moving valve holes; (b) a lower portion of the switching valve is fixed to the fixed valve member; The gas is supplied to either one of the one chamber or the other chamber, and the purified gas is introduced from any one of the remaining chambers, and (d) includes a driving unit that rotationally drives the rotating shaft, and (e) a control unit. The control device for the heat storage type catalytic combustion apparatus according to claim 2, wherein the control means controls the rotation speed of the rotating shaft by the driving means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6097709A JPH07305824A (en) | 1994-05-11 | 1994-05-11 | Operating method for heat storage type catalytic burner and controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6097709A JPH07305824A (en) | 1994-05-11 | 1994-05-11 | Operating method for heat storage type catalytic burner and controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07305824A true JPH07305824A (en) | 1995-11-21 |
Family
ID=14199443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6097709A Pending JPH07305824A (en) | 1994-05-11 | 1994-05-11 | Operating method for heat storage type catalytic burner and controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07305824A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000274644A (en) * | 1999-03-29 | 2000-10-03 | Trinity Ind Corp | Regenerative exhaust gas treating device and method for operating it for burnout |
| US6298877B1 (en) | 1997-05-12 | 2001-10-09 | Chugai Ro Co. Ltd. | Distributing valve device for heat accumulation type combustion system |
| JP2005140417A (en) * | 2003-11-06 | 2005-06-02 | Taikisha Ltd | Heat resisting airtight wall structure, heat storage type gas treatment device, and adsorptive/desorptive gas treatment device |
| JP2010112704A (en) * | 2002-08-28 | 2010-05-20 | Megtec Systems Inc | Regenerative thermal oxidizer with double lift system |
| US7740026B2 (en) | 2004-06-28 | 2010-06-22 | Taikisha Ltd. | Thermal storage type gas treating apparatus |
| KR100986594B1 (en) * | 2010-05-04 | 2010-10-08 | 금호환경 주식회사 | Combustion system with multi-disk heat storage type |
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-
1994
- 1994-05-11 JP JP6097709A patent/JPH07305824A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6298877B1 (en) | 1997-05-12 | 2001-10-09 | Chugai Ro Co. Ltd. | Distributing valve device for heat accumulation type combustion system |
| JP2000274644A (en) * | 1999-03-29 | 2000-10-03 | Trinity Ind Corp | Regenerative exhaust gas treating device and method for operating it for burnout |
| JP2010112704A (en) * | 2002-08-28 | 2010-05-20 | Megtec Systems Inc | Regenerative thermal oxidizer with double lift system |
| JP2005140417A (en) * | 2003-11-06 | 2005-06-02 | Taikisha Ltd | Heat resisting airtight wall structure, heat storage type gas treatment device, and adsorptive/desorptive gas treatment device |
| US7740026B2 (en) | 2004-06-28 | 2010-06-22 | Taikisha Ltd. | Thermal storage type gas treating apparatus |
| JP2011099592A (en) * | 2009-11-04 | 2011-05-19 | Scivax Kk | Flow channel switch valve, and heat exchanger and gas treatment device using the same |
| KR100986594B1 (en) * | 2010-05-04 | 2010-10-08 | 금호환경 주식회사 | Combustion system with multi-disk heat storage type |
| JP2014178065A (en) * | 2013-03-14 | 2014-09-25 | Ricoh Co Ltd | Regenerative combustion device and pyrolysis processing method |
| WO2015041037A1 (en) * | 2013-09-19 | 2015-03-26 | 新東工業株式会社 | Catalytic regenerative combustion apparatus |
| CN105452770A (en) * | 2013-09-19 | 2016-03-30 | 新东工业株式会社 | Catalytic regenerative combustion apparatus |
| JPWO2015041037A1 (en) * | 2013-09-19 | 2017-03-02 | 新東工業株式会社 | Catalytic heat storage combustion equipment |
| TWI626404B (en) * | 2013-09-19 | 2018-06-11 | 新東工業股份有限公司 | Catalytic thermal-accumulating burning apparatus |
| KR101862210B1 (en) * | 2018-02-13 | 2018-05-29 | 이영철 | Deodorization furnace with air pocket |
| KR102238253B1 (en) * | 2021-02-04 | 2021-04-09 | 케이씨코트렐 주식회사 | High Efficiency Energy Saving NOx and VOC Removal System |
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