JPS60118220A - Tail gas treating method - Google Patents
Tail gas treating methodInfo
- Publication number
- JPS60118220A JPS60118220A JP58223255A JP22325583A JPS60118220A JP S60118220 A JPS60118220 A JP S60118220A JP 58223255 A JP58223255 A JP 58223255A JP 22325583 A JP22325583 A JP 22325583A JP S60118220 A JPS60118220 A JP S60118220A
- Authority
- JP
- Japan
- Prior art keywords
- sulfur
- tail gas
- gas
- adsorbent
- treating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、二酸化硫黄を含有するガスよシ単体硫黄を回
収する装置に於ける出口ガス（テイルガス）の処理方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating outlet gas (tail gas) in an apparatus for recovering elemental sulfur from gas containing sulfur dioxide.
従来よシ公知の方法であるところの、二酸化硫黄含有ガ
スより、炭素質還元剤による二酸化硫黄還元反応及び、
クラウス触媒によるクラウス反応等とを利用して、単体
硫黄を回収する方法に於けるテイルガス中には、イオウ
及び二酸化硫黄、硫化水素、硫化カルボニル等の硫黄化
合物（以下硫黄化合物等という）が、一般的に。A sulfur dioxide reduction reaction using a carbonaceous reducing agent from a sulfur dioxide-containing gas, which is a conventionally known method;
Sulfur compounds (hereinafter referred to as sulfur compounds, etc.) such as sulfur, sulfur dioxide, hydrogen sulfide, and carbonyl sulfide are generally contained in the tail gas in the method of recovering elemental sulfur using the Claus reaction using a Claus catalyst. To.
０．８〜１．２容量係、及び、若干の硫黄ミストが含ま
れている事が確認されている。この様なテイル・ガスを
、そのままの状態で、大気放出する事は、大気汚染防止
の観点よル判断して不可能であシ、何らかのテイルガス
処理が必要である０
これに対し、従来より行なわれてきた方法では、テイル
・ガスを焼却炉に導入し、燃料を供給する事によシ、含
有硫黄酸化物等を、全て、二酸化硫黄に変換してから、
排ガス脱硫装置で処理するか、さらに前記焼却炉の前に
別途高性能の硫黄回収装置を設ける等の処理を行ってい
る０
しかしながら、上記のような処理方法では、テイル・ガ
ス用焼却炉の設置、及び、焼却用燃料の消費等によシ、
該単体硫黄回収装置の運転費及び、建設費が高額のもの
となっている。この様な弊害があるにもかかわらず、従
来は上記の様な処理方法を採用せざるを得なかった。It has been confirmed that the volume ratio is 0.8 to 1.2 and that some sulfur mist is included. It is impossible to release such tail gas into the atmosphere as it is from the viewpoint of air pollution prevention, and some kind of tail gas treatment is required. The conventional method involves introducing tail gas into an incinerator and supplying fuel, converting all sulfur oxides, etc. contained in the incinerator into sulfur dioxide.
However, the above treatment method does not require the installation of a tail gas incinerator. , and consumption of incineration fuel, etc.
The operation cost and construction cost of the single sulfur recovery equipment are high. Despite these disadvantages, the above-mentioned treatment method has conventionally been unavoidable.
本発明者らは、本発明に先だって、すでに前記、乾式脱
硫・脱硝装置に於いて利用される炭素質吸着剤の二酸化
硫黄及び、窒素酸化や共存下に於ける、特に、硫化水素
に対する吸着能力の確認を行い、上記吸着能力を充分に
有する炭素質吸着剤を提案した。Prior to the present invention, the present inventors had already investigated the adsorption ability of the carbonaceous adsorbent used in the dry desulfurization and denitrification equipment for sulfur dioxide, nitrogen oxidation, and especially hydrogen sulfide in the presence of nitrogen oxidation. We confirmed this and proposed a carbonaceous adsorbent that has sufficient adsorption capacity.
本発明の目的は、従来のテイル・ガス処理方法を簡素化
することによフ、該単体硫黄回収装置の建設費及び、運
転費の大巾な削減を達成することにあり、この目的は、
上述した酸化硫黄及び、窒素酸化物共存下で、特に硫化
水素に対し充分な吸着能を有する炭素質吸着剤をテイル
ガス処理において使用するという手段によυ達成された
。The purpose of the present invention is to achieve a significant reduction in the construction cost and operating cost of the unit sulfur recovery equipment by simplifying the conventional tail gas treatment method.
This was accomplished by using a carbonaceous adsorbent that has sufficient adsorption capacity, especially for hydrogen sulfide, in the tail gas treatment in the coexistence of the above-mentioned sulfur oxides and nitrogen oxides.
すなわち本発明の要旨は、二酸化硫黄含有ガスより単体
硫黄を回収する装置からのテイルガス中の硫黄ミストを
除去した後、二酸化硫黄、硫化水素、硫化カルボニル等
の硫黄化合物を含有する該テイルガスを、炭素質材を吸
着材として用いる乾式脱硫・脱硝装置によ多処理すプき
排ガス中に混入して、該テイルガス中の硫黄化合物をも
該炭素質吸着材によシ吸着処理することを特徴とするテ
イルガス処理方法。That is, the gist of the present invention is to remove sulfur mist in the tail gas from an apparatus for recovering elemental sulfur from a sulfur dioxide-containing gas, and then convert the tail gas containing sulfur compounds such as sulfur dioxide, hydrogen sulfide, and carbonyl sulfide into carbon The method is characterized in that the carbonaceous material is mixed into the exhaust gas that is subjected to multiple treatment in a dry desulfurization/denitrification device using the carbonaceous adsorbent as an adsorbent, and the sulfur compounds in the tail gas are also adsorbed by the carbonaceous adsorbent. Tail gas treatment method.
二酸化硫黄含有ガスよ勺単体硫黄を回収する装置からの
テイルガス中の硫黄ミストを除去した後、二酸化硫黄、
硫化水素、硫化カルボニル等の硫黄化合物を含有する該
テイルガスを、炭素質吸着材を用いた専用の吸着装置に
よ）処理して該硫黄化合物を吸着除去し、次に該吸着材
を排ガスの乾式脱硫・脱硝装置において処理することを
特徴とするテイルガス処理方法を提供することにある０
以下本発明をさらに詳細に説明する。After removing the sulfur mist in the tail gas from the device for recovering elemental sulfur, sulfur dioxide,
The tail gas containing sulfur compounds such as hydrogen sulfide and carbonyl sulfide is treated with a special adsorption device using a carbonaceous adsorbent to adsorb and remove the sulfur compounds, and then the adsorbent is used to dry the exhaust gas. An object of the present invention is to provide a tail gas treatment method characterized in that the treatment is carried out in a desulfurization/denitrification device.The present invention will be explained in more detail below.
第１図鉱、本発明のテイルガス処理方法の一実施例にお
ける、乾式脱流・脱硝装置及び単体硫黄回収装置のフロ
ーを示す。第１図において１は吸着工程、２は再生工程
、３Ｖｉ、二酸化硫黄還元工程、４はクラウス反応工程
、５は硫黄ミスト・セパレーター、６はスタックを示す
。Figure 1 shows the flow of a dry deflow/denitrification device and an elemental sulfur recovery device in an embodiment of the tail gas treatment method of the present invention. In FIG. 1, 1 is an adsorption process, 2 is a regeneration process, 3Vi is a sulfur dioxide reduction process, 4 is a Claus reaction process, 5 is a sulfur mist separator, and 6 is a stack.
８０、を含有する排ガスは吸着工程１及び脱着工程２を
経て排出される二酸化硫黄含有ガスは、炭素質材を還元
剤とする二酸化硫黄還元工程５に導かれ、ここで二酸化
硫黄は硫黄、硫化水素、硫化カルボニル等に還元される
。次いでクラウス反応工程４にて、クラウス反応により
単体硫黄は回収され、反応後のガスは硫黄きストセパレ
ータ５にてさらに硫黄を回収され、排出されたテイルガ
スを直接再び原料排ガス（二酸化硫黄含有ガス）に混入
して、吸着工程１中の炭素質吸着剤によシ前記硫黄化合
物等をも吸着除去する。The exhaust gas containing 80 is passed through adsorption step 1 and desorption step 2, and the sulfur dioxide-containing gas discharged is led to sulfur dioxide reduction step 5 using carbonaceous material as a reducing agent, where sulfur dioxide is converted into sulfur, sulfide Reduced to hydrogen, carbonyl sulfide, etc. Next, in the Claus reaction step 4, elemental sulfur is recovered by Claus reaction, and the gas after the reaction further recovers sulfur in the sulfur waste separator 5, and the discharged tail gas is directly reused as raw material exhaust gas (sulfur dioxide-containing gas). The sulfur compounds and the like are also adsorbed and removed by the carbonaceous adsorbent in the adsorption step 1.
本発明に基づくテイル・ガス処理方法では、前記、単体
硫黄回収装置を乾式脱硫・脱硝装置の後処理工程として
設置した場合、′テイル・ガス中に含有されている硫黄
ミストをミスト・セパレーターによル除去した後、直接
、乾式脱硫・脱硝装置にて処理される排ガス中に混入し
て処理する。即ち、上記、乾式脱硫・脱硝装置に於ける
炭素質吸着剤によシ、二酸化硫黄のみならず、硫黄化合
物等をも、該排ガス中よシ吸着除去するものである。こ
の様な処理方法は、主に、上記の炭素質吸着剤の吸着能
力に依存しているのであるが、前記の如く、該テイル・
ガス中の硫黄化合物等の濃度は０．８〜１．２容量係と
。In the tail gas treatment method based on the present invention, when the above-mentioned elemental sulfur recovery device is installed as a post-treatment process of the dry desulfurization/denitrification device, the sulfur mist contained in the tail gas is removed by the mist separator. After removing the gas, it is mixed directly into the exhaust gas to be treated in the dry desulfurization/denitrification equipment. That is, not only sulfur dioxide but also sulfur compounds and the like are adsorbed and removed from the exhaust gas by the carbonaceous adsorbent in the dry desulfurization/denitrification equipment mentioned above. This treatment method mainly depends on the adsorption ability of the carbonaceous adsorbent, but as mentioned above, the tail
The concentration of sulfur compounds, etc. in the gas is 0.8 to 1.2 by volume.
かなシ近いので、該炭素質吸着剤によシ、混合排ガス中
の硫化水素等は、９０〜１００チ吸着除去される。Since the carbonaceous adsorbent absorbs and removes 90 to 100% of hydrogen sulfide and the like in the mixed exhaust gas, the carbonaceous adsorbent absorbs and removes the hydrogen sulfide and the like in the mixed exhaust gas.
第２図は、本発明のテイルガス処理方法の別の実施態様
例のフローを示す。図中の符号１〜６は第１図と同様を
意味し、７はテイルガス吸着装置である。FIG. 2 shows the flow of another embodiment of the tail gas treatment method of the present invention. Reference numerals 1 to 6 in the figure have the same meanings as in FIG. 1, and 7 is a tail gas adsorption device.
この方法の場合では、前記炭素質吸着剤を充填したテイ
ルガス吸着装置７を設け、前記テイルガスを該吸着装置
に導入し、硫黄化合物等を吸着除去するもので、テイル
ガス中の硫黄化合物等は、はぼ完全に除去される。In this method, a tail gas adsorption device 7 filled with the carbonaceous adsorbent is provided, and the tail gas is introduced into the adsorption device to adsorb and remove sulfur compounds, etc. Almost completely removed.
本発明の効果を、以下に挙げる実施例によシ示す。The effects of the present invention will be illustrated by the following examples.
（実施例１）
第１図に示したフローによシ、テイルガスを排ガスに混
合して処理を行った。(Example 1) According to the flow shown in FIG. 1, treatment was carried out by mixing tail gas with exhaust gas.
処理ガス組成Ｈａｓ ８０〜１００ ｐｐｍ、 Ｎｏ
１００〜１５０ ｐｐｍ、ＯＨ６〜１０ ’Ｉｒ ＨＩ
Ｏ１ｏ 〜２０％ 、 Ｎ２ Ｂａ１ａｎｃｅ 、ガス
温度１５０〜１５０℃の処理ガスをＳＶ 値６００〜６
５０ ｈｒ−” にて炭素質吸着剤を利用して処理した
ところ、出口ガス中のＨ，Ｓ ９度は、平均して、５
ｐｐｍ以下を示した。（Ｈａｓ除去率９４係以上）
（実施例２）
第２図に示したフローによシテイルガス処理を行った。Processing gas composition Has 80-100 ppm, No
100-150 ppm, OH6-10'Ir HI
Processing gas with O1o ~20%, N2 Balance, and gas temperature 150~150°C has an SV value of 600~6
When treated using a carbonaceous adsorbent at 50 hr-'', the H, S 9 degrees in the outlet gas were on average 5.
It showed less than ppm. (Has removal rate of 94 or higher) (Example 2) Tail gas treatment was performed according to the flow shown in FIG.
処理ガス組成（テイルガスにて）Ｈ，８０，５〜１．０
％、 ８０２０．２〜０．５俤、Ｃ０８０〜０．２憾。Processing gas composition (at tail gas) H, 80.5 to 1.0
%, 8020.2 ~ 0.5 俤, C080 ~ 0.2 迾.
ｓ２ ｏ〜０．１％、ｏ２ ｏ、ｓ〜０．５ ％、Ｈ２
Ｏ１８〜２５％、ＣＯ２５〜７ ％、Ｎ２ Ｂａ１ａｎ
ｃｅ、ガス温度１３０〜１５０℃、ＳＶ値 ２００〜６
００ｈｒ” にて炭素質吸着剤を利用して処理したとこ
ろ、出口ガス中には、硫黄化合物等は検出されなかった
。すなわち、実施例１の場合はティルガス中の硫化水素
は約９４チ以上除去され、専用のテイルガス吸着装置を
設けた実施例２では、硫黄化合物は完全に除去される。s2 o~0.1%, o2 o, s~0.5%, H2
O18-25%, CO25-7%, N2 Ba1an
ce, gas temperature 130-150℃, SV value 200-6
No sulfur compounds were detected in the outlet gas when the treatment was carried out using a carbonaceous adsorbent for 00 hours. In other words, in the case of Example 1, approximately 94 or more hydrogen sulfide in the till gas was removed. In Example 2, in which a dedicated tail gas adsorption device was provided, sulfur compounds were completely removed.
以上詳述の如く、本発明のテイルガス処理法は、乾式脱
流、脱硝装置に応用して、大いなる効果を奏するもので
あシ、さらに水沫に加え専用の脱着装置を付設する事に
より、例えば、石油化学工業における硫黄回収装置にも
使用する事が可能であって、産業上有用な発明である。As described in detail above, the tail gas treatment method of the present invention can be applied to dry deflow and denitrification equipment to achieve great effects.Furthermore, by adding a dedicated desorption device in addition to water droplets, for example, It is an industrially useful invention that can also be used in sulfur recovery equipment in the petrochemical industry.
第１図は、本発明による方法の一実施態様例であって、
テイルガスを原料排ガスに混入し処理する方法のフロー
を示す０
第２図は、本発明による方法の別の実施態様例であって
、テイルガスを専用吸着装置で処理する方法のフローを
示す。
代理人 内 １） 明
代理人 萩 原 亮 −
第１図
第１頁の続き
＠発明者伊藤 装部
東京都中央区日本橋室町２丁目１番地１ 三井三池化工
機味式会社内FIG. 1 shows an example of an embodiment of the method according to the invention, comprising:
FIG. 2 shows a flowchart of a method for mixing tail gas into raw material exhaust gas and treating it. FIG. 2 is another embodiment of the method according to the present invention, and shows a flowchart of a method for treating tail gas with a dedicated adsorption device. Agents 1) Akira Agent: Ryo Hagiwara - Figure 1, page 1 continued @ Inventor: Ito Sobu Inside Mitsui Miike Kako Kikishiki Co., Ltd., 2-1-1 Nihonbashi Muromachi, Chuo-ku, Tokyo
Claims (2)
からのテイルガス中の硫黄ミストを除去した後、二酸化
硫黄、硫化水素、硫化カルボニル等の硫黄化合物を含有
する該テイルガスを、炭素質材を吸着材として用いる乾
式脱硫・脱硝装置によジ処理すべき排ガス中に混入して
、該テイルガス中の硫黄化合物をも該炭素質吸着材によ
シ吸着処理することを特徴とするテイルガス処理方法。(1) After removing the sulfur mist in the tail gas from a device that recovers elemental sulfur from a gas containing sulfur dioxide, the tail gas containing sulfur compounds such as sulfur dioxide, hydrogen sulfide, and carbonyl sulfide is removed from the carbonaceous material. A method for treating tail gas which is characterized in that sulfur compounds in the tail gas are adsorbed by the carbonaceous adsorbent after being mixed into the exhaust gas to be treated by a dry desulfurization/denitrification device used as an adsorbent.
からのテイルガス中の硫黄ミストを除去した後、二酸化
硫黄、硫化水素、硫化カルボニル等の硫黄化合物を含有
する該ティルガスを、炭素吸着材を用いた専用の吸着装
置によシ処理して該硫黄化合物を吸着除去し、次に該吸
着材を排ガスの乾式脱硫・脱硝装置において処理すると
とを特徴とするティルガス処理方法。(2) After removing the sulfur mist in the tail gas from a device that recovers elemental sulfur from gas containing sulfur dioxide, the tail gas containing sulfur compounds such as sulfur dioxide, hydrogen sulfide, and carbonyl sulfide is treated with a carbon adsorbent. 1. A method for treating till gas, comprising: treating the sulfur compound by adsorption and removal using a dedicated adsorption device, and then treating the adsorbent in a dry desulfurization/denitrification device for exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58223255A JPS60118220A (en) | 1983-11-29 | 1983-11-29 | Tail gas treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58223255A JPS60118220A (en) | 1983-11-29 | 1983-11-29 | Tail gas treating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60118220A true JPS60118220A (en) | 1985-06-25 |
| JPH0370529B2 JPH0370529B2 (en) | 1991-11-08 |
Family
ID=16795228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58223255A Granted JPS60118220A (en) | 1983-11-29 | 1983-11-29 | Tail gas treating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60118220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100494135B1 (en) * | 2000-12-05 | 2005-06-10 | 주식회사 포스코 | Method for treating tail gas in sintering process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56163734A (en) * | 1980-05-23 | 1981-12-16 | Mitsubishi Heavy Ind Ltd | Treatment for waste gas of combustion |
-
1983
- 1983-11-29 JP JP58223255A patent/JPS60118220A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56163734A (en) * | 1980-05-23 | 1981-12-16 | Mitsubishi Heavy Ind Ltd | Treatment for waste gas of combustion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100494135B1 (en) * | 2000-12-05 | 2005-06-10 | 주식회사 포스코 | Method for treating tail gas in sintering process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0370529B2 (en) | 1991-11-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |