JP2789871B2 - Catalyst purification device - Google Patents
Catalyst purification deviceInfo
- Publication number
- JP2789871B2 JP2789871B2 JP3207850A JP20785091A JP2789871B2 JP 2789871 B2 JP2789871 B2 JP 2789871B2 JP 3207850 A JP3207850 A JP 3207850A JP 20785091 A JP20785091 A JP 20785091A JP 2789871 B2 JP2789871 B2 JP 2789871B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- gas
- heating device
- main body
- heating
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、触媒浄化装置に関し、
特に各種排ガス中に混入したＣＯ（一酸化炭素），ＨＣ
（炭化水素）などの悪臭成分や、だに，細菌，花粉など
の有害成分を適正温度に加熱し、触媒により酸化燃焼浄
化する触媒浄化装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalyst purification device,
In particular, CO (carbon monoxide), HC mixed in various exhaust gases
The present invention relates to a catalyst purification device that heats odorous components such as (hydrocarbons) and harmful components such as mud, bacteria and pollen to an appropriate temperature, and oxidizes, combusts, and purifies with a catalyst.
【０００２】[0002]
【従来の技術】近年、各種の燃焼機や乾燥，熱処理時に
発生するＣＯやＮＣ成分は、その有害性や臭気のため浄
化し排出することが必要不可欠なものになっている。ま
ただにや細菌，花粉なども人に対して悪影響を与えると
ともに半導体などの生産工場でも有害成分として、その
浄化に苦慮している。ＣＯやＨＣ成分、その他の有機物
質の浄化方法としては、それらが含まれているガス自身
を加熱し、ガス中の酸素と反応させ燃焼する方法が最も
浄化効率が高く信頼性も高い。ここでガスの温度を上げ
空気中の酸素がＣＯやＨＣと反応するには、８００〜９
００℃以上の温度が必要になる。しかし酸化触媒を用い
れば２００〜４００℃の温度範囲で反応を進めることが
でき、熱エネルギーの無駄を省くことができるため広く
用いられている。2. Description of the Related Art In recent years, it has become indispensable to purify and discharge CO and NC components generated during various types of combustors, drying and heat treatment due to their harmfulness and odor. In addition, bacteria, pollen, and the like have an adverse effect on humans, and production plants for semiconductors and the like have a problem in purifying them as harmful components. As a method of purifying CO and HC components and other organic substances, a method of heating a gas containing the same and reacting it with oxygen in the gas to burn the gas has the highest purification efficiency and high reliability. Here, in order for the oxygen in the air to react with CO and HC by raising the temperature of the gas, 800 to 9
A temperature of 00 ° C. or higher is required. However, if an oxidation catalyst is used, the reaction can proceed in a temperature range of 200 to 400 ° C., and waste of heat energy can be reduced, so that it is widely used.
【０００３】以下に従来の触媒浄化装置について説明す
る。図２は、従来の触媒浄化装置の一例で、（ａ）は触
媒浄化装置本体、（ｂ）は熱交換も含めたシステムを示
す。１０は触媒浄化装置本体、１６は熱交換機、１２は
加熱装置、１３は触媒を示す。（ａ）で排ガスはガス入
口１１から触媒加熱装置本体１０に導入され、加熱装置
１２により所定の温度に昇温し、触媒１３によりＣＯ，
ＨＣなどが酸化浄化され、ガス出口１４から排出され
る。このときガスの昇温に要したエネルギーはガスと一
緒に排出されることになる。このエネルギーの一部を回
収する目的で熱交換機を用いたシステムが（ｂ）であ
る。この場合ガス流入口１７から導入され熱交換機１６
で昇温されたガスは、矢印に沿って流れ触媒浄化装置本
体１０に進む。ここで浄化されたガスは、再び熱交換機
１６に入り冷却されガス流出口１８から排出される。す
なわちガスの昇温に要したエネルギーの一部を回収しエ
ネルギーロスを少なくしようとするものである。[0003] A conventional catalyst purifying apparatus will be described below. FIGS. 2A and 2B show an example of a conventional catalyst purifying apparatus. FIG. 2A shows a catalyst purifying apparatus main body, and FIG. 2B shows a system including heat exchange. Reference numeral 10 denotes a catalyst purification device main body, 16 denotes a heat exchanger, 12 denotes a heating device, and 13 denotes a catalyst. In (a), the exhaust gas is introduced from the gas inlet 11 into the catalyst heating device main body 10, the temperature is raised to a predetermined temperature by the heating device 12, and CO,
HC and the like are oxidized and purified, and are discharged from the gas outlet 14. At this time, the energy required to raise the temperature of the gas is discharged together with the gas. A system using a heat exchanger for the purpose of recovering a part of this energy is (b). In this case, the gas is introduced from the gas inlet 17 and the heat exchanger 16
The gas whose temperature has been raised in the above flows along the arrow and proceeds to the catalyst purification device main body 10. The purified gas enters the heat exchanger 16 again, is cooled, and is discharged from the gas outlet 18. That is, part of the energy required for raising the temperature of the gas is recovered to reduce energy loss.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上記の従
来の構成で用いられる熱交換機１６は、通常熱伝導率の
良い薄肉のアルミニウムが主体となって構成されており
熱交換効率は５０〜６０％が限界であり、またＳＯxや
ＮＯxなどの腐食性のガスを含んだ排ガスに対してはア
ルミニウムが腐食するため使用できないという問題点が
あった。However, the heat exchanger 16 used in the above-mentioned conventional structure is mainly composed of thin aluminum having good thermal conductivity, and the heat exchange efficiency is 50 to 60%. a limit, also aluminum has a problem that can not be used for corrosion for exhaust gas containing corrosive gases such as SO x and nO x.
【０００５】本発明は、上記従来の問題点を解決するも
ので、新しい熱交換方式を用いるとともに、よりエネル
ギー効率を向上させる温度制御構造を与えることにより
高い熱交換効率が可能となりエネルギーロスを大幅に減
少させた触媒浄化装置を提供することを目的とする。The present invention solves the above-mentioned conventional problems. In addition to using a new heat exchange system and providing a temperature control structure for further improving energy efficiency, high heat exchange efficiency is possible and energy loss is greatly reduced. It is an object of the present invention to provide a catalyst purifying apparatus with a reduced number.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するため
に本発明の触媒浄化装置は、触媒浄化装置本体の両端の
開口部がガスの入口または出口として交互に変換するガ
ス出入口を有し、触媒浄化装置本体中央に加熱装置を配
し、加熱装置の両側に触媒を有し、両端から触媒までの
間にそれぞれ蓄熱体を設置した構成を有している。加熱
装置による加熱温度を制御するセンサーは、それぞれの
触媒の中央部側（または外側）に設置され、ガスの流れ
方向に対して常に加熱装置の風下側のセンサーが温度制
御のため使用されるようにガスの流れ方向の逆転と同時
に、温度制御センサーも切り替えられるように設計され
ている。In order to achieve this object, a catalyst purifying apparatus according to the present invention has gas inlets and outlets in which openings at both ends of a catalyst purifier main body are alternately converted as gas inlets or outlets. A heating device is disposed in the center of the catalyst purification device main body, catalysts are provided on both sides of the heating device, and a heat storage body is provided between each end and the catalyst. A sensor that controls the heating temperature of the heating device is installed at the center (or outside) of each catalyst, and a sensor on the leeward side of the heating device is always used for temperature control in the gas flow direction. The temperature control sensor is designed to be switched at the same time as the gas flow direction is reversed.
【０００７】[0007]
【作用】この構成によって、本発明の触媒浄化装置は、
ガスは触媒浄化装置本体に導入されると、まず蓄熱体を
通過することにより蓄熱体から熱を奪う。さらに加熱装
置では触媒浄化が必要な温度になるまで加熱され触媒を
通過し有害物質は酸化燃焼浄化される。この時の加熱温
度の制御は加熱装置の風下側の温度センサーで検出す
る。加熱され有害成分が浄化されたガスはもう一方の蓄
熱体を通過するとき熱エネルギーを蓄熱体により奪われ
冷却され放出される。一定時間の後、触媒浄化装置での
ガスの流れ方向を逆にする。すなわちそれまでガスの出
口側に位置していた蓄熱体は触媒により浄化されたガス
から熱エネルギーを十分奪いとった状態にあり、このガ
スの流れの方向を逆にする操作によって、今度はガスの
入口側の蓄熱体としての役目を担い触媒浄化装置本体に
導入されたガスに熱を供給する。逆にそれまで入口側に
あった蓄熱体はガスにより熱を奪われた状態であり、ガ
スの流れの方向を逆にすることによって加熱され、触媒
により浄化されたガスから熱エネルギーを奪う側に変わ
る。このときそれまで加熱装置による加熱温度を制御し
ていたセンサーは加熱装置の風上側に変換したことにな
る。加熱装置の加熱温度制御を風上側のセンサーで制御
することはガスの過昇温を引き起こす。すなわちこのガ
スの流れ方向を逆転すると同時に温度制御センサーが加
熱装置の風下側になるように別に設けたセンサーに検出
動作を切り替える。このことは、ガスは触媒による浄化
に最も適し、かつ過剰に加熱されすぎないように制御さ
れるとともに、２つの蓄熱体の間で熱エネルギーの一部
または大部分が閉じこめることを意味し、排出される熱
ロスを削減できることとなる。With this configuration, the catalyst purifying apparatus of the present invention has
When the gas is introduced into the main body of the catalyst purification device, the gas first passes through the heat accumulator to remove heat from the heat accumulator. Further, in the heating device, the catalyst is heated until the temperature required for purifying the catalyst is reached, passes through the catalyst, and harmful substances are oxidized, combusted and purified. The control of the heating temperature at this time is detected by a temperature sensor on the lee side of the heating device. When the gas which has been heated and purified of harmful components passes through the other heat accumulator, it loses heat energy by the heat accumulator and is cooled and discharged. After a certain period of time, the gas flow direction in the catalyst purification device is reversed. In other words, the heat storage element that was located on the gas outlet side until then has sufficiently removed heat energy from the gas purified by the catalyst, and this operation of reversing the flow direction of the gas has It serves as a heat storage element on the inlet side and supplies heat to the gas introduced into the catalyst purification device body. Conversely, the heat storage body that was on the inlet side has been deprived of heat by the gas, and is heated by reversing the direction of the gas flow, so that the heat energy is removed from the gas purified by the catalyst. change. At this time, the sensor that previously controlled the heating temperature of the heating device has been converted to the windward side of the heating device. Controlling the heating temperature control of the heating device with a sensor on the windward side causes an excessive temperature rise of the gas. That is, at the same time as the gas flow direction is reversed, the detection operation is switched to a sensor separately provided such that the temperature control sensor is located on the leeward side of the heating device. This means that the gas is most suitable for catalytic purification and is controlled so that it is not overheated, and that some or most of the thermal energy is trapped between the two regenerators, Heat loss can be reduced.
【０００８】[0008]
【実施例】以下本発明の一実施例の触媒浄化装置につい
て、図面を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a catalyst purifying apparatus according to one embodiment of the present invention will be described with reference to the drawings.
【０００９】図１において、１９はこの触媒浄化装置へ
の排ガスの流入口、２０は浄化されたガスの流出口を示
す。５は触媒浄化装置本体、４はその中央に設けた加熱
装置、３は加熱装置４を挟んで設けた一対の触媒、２は
触媒３の外側のガス流路６にそれぞれ設けた一対の蓄熱
体を示す。９は触媒浄化装置本体５のガスの流れの方向
を切り替えるダンパーで、（ａ）では触媒浄化装置本体
５の下部のガス出入口１がガスの入口となり、上部のガ
ス出入口８が出口となっているが、（ｂ）では、ダンパ
ー９を切り替えることによって、触媒浄化装置本体５内
のガスの流れの方向が逆転し、上部のガス流入口８が入
口となり、下部のガス流入口１が出口となっている。
Ａ，Ａ1，Ｂ，Ｂ1は加熱装置４による加熱温度制御用の
センサーを示し、Ａ，ＢまたはＡ1，Ｂ1のどちらかの組
み合わせで設置する。（ａ）では加熱装置４の風下側の
ＡまたはＡ1のセンサー２１で制御する。（ｂ）でも加
熱装置の風下側のＢまたはＢ1のセンサー２１で制御す
る。In FIG. 1, reference numeral 19 denotes an inlet of exhaust gas to the catalyst purifier, and reference numeral 20 denotes an outlet of purified gas. 5 is a catalyst purifying device main body, 4 is a heating device provided in the center thereof, 3 is a pair of catalysts provided with the heating device 4 interposed therebetween, and 2 is a pair of regenerators provided in a gas flow path 6 outside the catalyst 3 respectively. Is shown. Reference numeral 9 denotes a damper for switching the direction of gas flow in the catalyst purification device main body 5. In FIG. 9A, the lower gas inlet / outlet 1 of the catalyst purification device main body 5 serves as a gas inlet, and the upper gas inlet / outlet 8 serves as an outlet. However, in (b), by switching the damper 9, the direction of the gas flow in the catalyst purification device main body 5 is reversed, so that the upper gas inlet 8 becomes the inlet and the lower gas inlet 1 becomes the outlet. ing.
A, A 1 , B, and B 1 indicate sensors for controlling the heating temperature by the heating device 4, and are installed in any combination of A, B or A 1 , B 1 . (A) the control at the leeward side of the A or A 1 of the sensor 21 of the heating device 4. (B) Any controlled by leeward B or B 1 of the sensor 21 of the heating device.
【００１０】本実施例における有害成分の浄化効果と熱
効率を測定した結果を（表１）に示す。The results of measuring the harmful component purifying effect and the thermal efficiency in this embodiment are shown in Table 1.
【００１１】[0011]
【表１】 [Table 1]
【００１２】触媒浄化装置は、蓄熱体２としてコージラ
イト質のセラミックからなるハニカム構造のものを用い
た。蓄熱体総量は８０００cc用いた。触媒３はハニカム
状の白金触媒をそれぞれ１０００cc、加熱装置４はｍａ
ｘ１kwのシーズヒーターを用い３００℃で温度調節を行
った。２０℃で１００ppmのスチレンを含むガスを用い
た。ガスの浄化率はスチレンガスの触媒による分解率で
示し、熱効率は簡易的にガスが３００℃まで昇温された
として、３００℃への昇温温度に対してヒーターにより
使用された電力との比較をして算出した。切り替え時間
は１分のインターバルで実施した。In the catalyst purifying apparatus, a heat storage body 2 having a honeycomb structure made of cordierite ceramic was used. The total amount of the heat storage material was 8000 cc. The catalyst 3 is 1000 cc of a honeycomb-shaped platinum catalyst, and the heating device 4 is ma.
The temperature was controlled at 300 ° C. using a sheath heater of x1 kw. A gas containing 100 ppm of styrene at 20 ° C. was used. The gas purification rate is indicated by the decomposition rate of styrene gas by the catalyst, and the thermal efficiency is simply compared with the electric power used by the heater for the temperature rise to 300 ° C, assuming that the gas was heated to 300 ° C. Was calculated. The switching time was performed at intervals of one minute.
【００１３】この（表１）から明らかなように、９０％
以上のスチレンガスの浄化を８０％以上の熱交換効率で
達成することができている。従来法によるアルミニウム
の熱交換機を用いたものでは、排ガスの浄化率を８０％
以上にすることは可能であるが、熱交換率は５０〜６０
％が限界であった。本実施例の最も優れた条件では、ス
チレンガスの浄化率及び熱効率ともに９０％以上を示し
た。As is clear from Table 1, 90%
The purification of styrene gas described above can be achieved with a heat exchange efficiency of 80% or more. In the case of using a conventional aluminum heat exchanger, the purification rate of exhaust gas is 80%.
Although it is possible to make the above, the heat exchange rate is 50-60.
% Was the limit. Under the most excellent conditions of this example, both the purification rate of styrene gas and the thermal efficiency were 90% or more.
【００１４】[0014]
【発明の効果】以上の実施例の説明により明らかなよう
に、本発明の触媒浄化装置によれば、触媒浄化装置本体
の両端がガスの入口，出口として交互に変換する構造を
有し、中央に加熱装置とその前後に触媒を設置し、両端
から触媒の途中にそれぞれ蓄熱体を有する構造で、一定
時間有害成分を含んだガスを一端から触媒浄化装置本体
内に導入し蓄熱体及び加熱装置により加熱後、触媒によ
り浄化して後、もう一方の蓄熱体で冷却され他端から排
出する。次にダンパーを切り替えることによりガスの流
れ方向を逆転し、一定時間触媒浄化装置内に導入し、同
様の加熱，浄化，冷却過程を経て排出する。この時加熱
装置による加熱温度の制御は常に加熱装置の風下側の制
御用温度センサーで制御できるようにセンサーを切り替
える。この操作を交互に繰り返すことにより加熱装置に
よる過昇温を防止し、熱エネルギーを２層の蓄熱体の間
で閉じこめることができ、ロスを最小限に抑え、かつガ
ス中の有害成分を効率よく燃焼浄化することができる触
媒浄化装置を実現するものである。As is apparent from the above description of the embodiment, according to the catalyst purifying apparatus of the present invention, both ends of the catalyst purifying apparatus main body have a structure in which gas inlets and outlets are alternately converted, and A heating device and a catalyst before and after it are installed, and a structure that has a heat storage body in the middle of the catalyst from both ends, and a gas containing a harmful component is introduced into the main body of the catalyst purification device from one end for a certain period of time and the heat storage body and the heating device After being heated by, the catalyst is purified by the catalyst, then cooled by the other heat storage body and discharged from the other end. Next, the gas flow direction is reversed by switching the damper, and the gas is introduced into the catalyst purification device for a certain period of time, and discharged through the same heating, purification and cooling processes. At this time, the control of the heating temperature by the heating device is switched so that the control can be always performed by the control temperature sensor on the lee side of the heating device. By repeating this operation alternately, it is possible to prevent overheating by the heating device, confine the heat energy between the two layers of heat storage material, minimize loss, and efficiently remove harmful components in the gas. An object of the present invention is to realize a catalyst purifying apparatus capable of purifying a combustion.
【図１】（ａ）本発明の一実施例における触媒浄化装置
の全体構成の概念を示す説明図 （ｂ）同ガスの流れ方向を逆転した状態を示す説明図FIG. 1A is an explanatory view showing the concept of the overall configuration of a catalyst purifying apparatus according to an embodiment of the present invention. FIG. 1B is an explanatory view showing a state in which the flow direction of the gas is reversed.
【図２】（ａ）従来の触媒浄化装置本体の構成の概念を
示す説明図 （ｂ）熱交換機も含めた従来の触媒浄化システム全体の
構成の概念を示す説明図FIG. 2A is an explanatory view showing the concept of the configuration of a conventional catalyst purifying apparatus main body. FIG. 2B is an explanatory view showing the concept of the overall configuration of a conventional catalyst purifying system including a heat exchanger.
１，８ ガスの出入口 ２ 蓄熱体 ３ 触媒 ４ 加熱装置 ５ 触媒浄化装置本体 ６ ガス流路 ７ ガスの流れ方向 ９ ダンパー ２１ 温度センサー 1,8 Gas inlet / outlet 2 Heat storage unit 3 Catalyst 4 Heating device 5 Catalyst purifying device main body 6 Gas flow path 7 Gas flow direction 9 Damper 21 Temperature sensor
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実公 昭53−45090（ＪＰ，Ｙ２) 実願 平２−106499号（実開 平４− 63918号）の願書に添付した明細書及び 図面の内容を撮影したマイクロフィルム （ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) B01D 53/36──────────────────────────────────────────────────続 き Continuation of the front page (56) References Jikken Sho 53-45090 (JP, Y2) Contents of the specification and drawings attached to the application form of Japanese Utility Model Application No. 2-106499 (Japanese Utility Model Application No. 4-63918). (JP, U) (58) Field surveyed (Int. Cl. 6 , DB name) B01D 53/36
Claims (1)
出口として交互に変換するガス出入口を有し、中央に加
熱装置を配し、その両端に触媒を設置するとともに、両
端から前記触媒までのガス流路にそれぞれ蓄熱体を有
し、一定時間悪臭成分を含んだ排ガスを一端から前記触
媒浄化装置本体内に導入し、前記蓄熱体及び加熱装置に
より加熱後、前記触媒により浄化し、もう一方の蓄熱体
で冷却し、他端から排出し、一定時間後ダンパーの切り
替えによりガスの流れ方向を逆転させ、前記排ガスを一
定時間前記触媒浄化装置本体内に導入し、加熱，浄化，
冷却過程を経て排出する操作を交互に繰り返すことによ
り、前記排ガス中の有害成分を浄化する構成を有した触
媒浄化装置において、前記加熱装置による加熱温度制御
を行うため、ガスの流れ方向の逆転に対応して、常に前
記加熱装置の風下側の前記触媒の前方または後方で、蓄
熱体の前方に温度センサーを設けた触媒浄化装置。An exhaust gas inlet is provided at both ends of a catalyst purifying device main body.
It has a gas inlet and outlet that alternately converts as an outlet, a heating device is arranged in the center, a catalyst is installed at both ends, and a heat storage body is provided in a gas flow path from both ends to the catalyst, and a malodor component for a certain time Is introduced into the catalyst purifying device main body from one end, heated by the heat accumulator and the heating device, purified by the catalyst, cooled by the other heat accumulator, and discharged from the other end for a predetermined time. The direction of gas flow is reversed by switching the rear damper, and the exhaust gas is introduced into the main body of the catalyst purification device for a certain period of time.
In a catalyst purifying device having a configuration for purifying harmful components in the exhaust gas by alternately repeating an operation of discharging through a cooling process, in order to perform heating temperature control by the heating device, the gas flow direction is reversed. correspondingly, always in front of or behind the catalyst leeward side of the heating device,蓄
A catalyst purification device with a temperature sensor in front of the heating element .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3207850A JP2789871B2 (en) | 1991-08-20 | 1991-08-20 | Catalyst purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3207850A JP2789871B2 (en) | 1991-08-20 | 1991-08-20 | Catalyst purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0549859A JPH0549859A (en) | 1993-03-02 |
| JP2789871B2 true JP2789871B2 (en) | 1998-08-27 |
Family
ID=16546566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3207850A Expired - Lifetime JP2789871B2 (en) | 1991-08-20 | 1991-08-20 | Catalyst purification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2789871B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4436001B2 (en) * | 2001-03-13 | 2010-03-24 | 大阪瓦斯株式会社 | Gas engine exhaust gas purification method and gas engine exhaust gas purification device |
| JP6341466B2 (en) * | 2013-09-19 | 2018-06-13 | 新東工業株式会社 | Catalytic heat storage combustion equipment |
| CN105143560A (en) | 2015-03-25 | 2015-12-09 | 株式会社小松制作所 | Wheel loader |
| JP2023040881A (en) * | 2021-09-10 | 2023-03-23 | 日本無線株式会社 | Chemical reaction device and chemical reaction method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5345090U (en) * | 1976-09-20 | 1978-04-17 |
-
1991
- 1991-08-20 JP JP3207850A patent/JP2789871B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0549859A (en) | 1993-03-02 |
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