JPS5932943A - Agent for desulfurization-denitration in combination - Google Patents
Agent for desulfurization-denitration in combinationInfo
- Publication number
- JPS5932943A JPS5932943A JP57142995A JP14299582A JPS5932943A JP S5932943 A JPS5932943 A JP S5932943A JP 57142995 A JP57142995 A JP 57142995A JP 14299582 A JP14299582 A JP 14299582A JP S5932943 A JPS5932943 A JP S5932943A
- Authority
- JP
- Japan
- Prior art keywords
- sox
- nox
- expanded graphite
- exhaust gas
- washing
- 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
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)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
今日、石油あるいは石炭などの燃焼に伴ない発生するＮ
ＯｘおよびＳＯｘは社会的な問題として大いにクローズ
アップされている。これまでこれらの有害ガスの回収方
法としてオゾン酸化吸収法、気相酸化吸収還元法、湿式
還元法、スラリー吸収法およびアンモニアによる選択性
接触還元法などが試みられているが回収効率は未だ低く
、操業費も高価である。[Detailed Description of the Invention] Nowadays, N generated when burning oil or coal, etc.
Ox and SOx are attracting much attention as social problems. To date, attempts have been made to recover these harmful gases, including the ozone oxidation and absorption method, the gas phase oxidation and absorption reduction method, the wet reduction method, the slurry absorption method, and the selective catalytic reduction method using ammonia, but the recovery efficiency is still low. Operating costs are also high.
本発明はか＼る事情に鑑みなされたもので、ある。The present invention has been made in view of the above circumstances.
即ち、ＮＯｘおよびＳＯｘの吸着剤として膨張黒耐を使
用することを特徴とする脱硫兼脱硝剤に関する：
ものである。That is, it relates to a desulfurization and denitrification agent characterized by using expanded black oxide as an adsorbent for NOx and SOx:
It is something.
膨張黒鉛はリン状黒鉛を高濃度の硫酸又は硝酸に浸漬し
、次に水洗乾燥、３００〜５００℃に急熱膨張せしめた
ものを云う。通常、膨張黒鉛は元の体積の１００〜３０
０倍膨張する。Expanded graphite is obtained by immersing phosphorous graphite in highly concentrated sulfuric acid or nitric acid, then washing with water, drying, and rapidly expanding it at 300 to 500°C. Usually, expanded graphite has 100 to 30% of its original volume.
Expands 0 times.
膨張黒鉛の膨張メカニズムは未だ解明されていないが、
硫酸根支は硝酸根が膨張メカニズムに関与していること
は明らかである。一度膨張した黒鉛は冷却しても殆んど
変化しない。Although the expansion mechanism of expanded graphite has not yet been elucidated,
It is clear that sulfate and nitrate roots are involved in the expansion mechanism. Once expanded, graphite hardly changes even when cooled.
本発明はこの膨張黒鉛で以ってＮＯｘおよびＳｏｘを連
続的に吸着せしめ、飽和後これを水洗乾燥して、再使用
することにある。The present invention is to use this expanded graphite to continuously adsorb NOx and Sox, and after saturation, wash it with water and dry it to reuse it.
次に実施例を以って説明する。Next, an explanation will be given with reference to examples.
実施例 ゛
２屯ボイラの煙突内に膨張黒鉛を軽く充填したエレメン
ト（ｔｏｏ ｙＩｘ ｓｏｏ ｍｍ）を装填気密化し、
煙突上端に吸引ファンを取りつけ・、操業を行なった。Example ゛An element (too yIx soo mm) lightly filled with expanded graphite was loaded into the chimney of a 2-ton boiler to make it airtight.
A suction fan was installed at the top of the chimney and operated.
伺、−思料はＡ重油（ＬＳＡ）を用いた。I used heavy oil A (LSA).
次表にＮＯｘおよびＳＯｘの測定値を示す。The following table shows the measured values of NOx and SOx.
※・・・・・１ケ月使用した膨張黒鉛を水洗乾燥したも
の。*・・・Expanded graphite used for one month, washed with water and dried.
以上の如く排気ガス中のＮＯｘか７８ｐｐｍ、 ＳＯｘ
か７ｐｐｍあったものが膨張黒鉛を通過させることによ
って何れもｉｐｐｍ以下になった。又、１ケ月使用後膨
張黒鉛はこれらガスの吸着性か悪化し、排気ガス中のＮ
Ｏｘが４ｐｐｍ 、 ＳＯｘがｌｐｐｍとなったので、
これを水洗乾燥し、書ひ使用すると以１）ＩＪと同様の
′ｌ’Ｌ能でＮＯｘおよびＳＯｘを吸着することも判明
した。As mentioned above, NOx in exhaust gas is 78ppm, SOx
By passing through expanded graphite, the amount was reduced to less than ippm. In addition, after one month of use, the adsorption of expanded graphite for these gases deteriorates, and the N in the exhaust gas deteriorates.
Since Ox is 4ppm and SOx is lppm,
It was also found that when this was washed with water and dried and used for writing, it adsorbed NOx and SOx with the same 'l'L ability as IJ.
従って、本発明の方法はアンモニアなどの第３物質を全
く使用せずＮＯｘおよびＳＯｘを効率よく除去できるの
で斯界に大いに貢献できるものと確信する。Therefore, we believe that the method of the present invention can make a great contribution to this field since it can efficiently remove NOx and SOx without using any third substances such as ammonia.
特許出願人 川 口 長兵衛／′粕゛′６）−ソPatent applicant Chobei Kawaguchi/'Kasu'6)-So
Claims (1)
ことを特徴とする脱硫兼脱硝剤。A desulfurization and denitration agent characterized by using expanded graphite as an adsorbent for NOx and SOx.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57142995A JPS5932943A (en) | 1982-08-17 | 1982-08-17 | Agent for desulfurization-denitration in combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57142995A JPS5932943A (en) | 1982-08-17 | 1982-08-17 | Agent for desulfurization-denitration in combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5932943A true JPS5932943A (en) | 1984-02-22 |
Family
ID=15328488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57142995A Pending JPS5932943A (en) | 1982-08-17 | 1982-08-17 | Agent for desulfurization-denitration in combination |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5932943A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702749A (en) * | 1986-06-24 | 1987-10-27 | Air Products And Chemicals, Inc. | Technique for surface oxidation of activated carbon |
| CN109576003A (en) * | 2018-12-18 | 2019-04-05 | 内蒙古大学 | A method of removing sulfide and Recovered sulphur from coal gas |
| CN110961138A (en) * | 2019-12-25 | 2020-04-07 | 福州大学 | Nitrogen-doped graphene grown in situ by self-assembled denitration sulfur-resistant catalyst and preparation method thereof |
-
1982
- 1982-08-17 JP JP57142995A patent/JPS5932943A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702749A (en) * | 1986-06-24 | 1987-10-27 | Air Products And Chemicals, Inc. | Technique for surface oxidation of activated carbon |
| CN109576003A (en) * | 2018-12-18 | 2019-04-05 | 内蒙古大学 | A method of removing sulfide and Recovered sulphur from coal gas |
| CN110961138A (en) * | 2019-12-25 | 2020-04-07 | 福州大学 | Nitrogen-doped graphene grown in situ by self-assembled denitration sulfur-resistant catalyst and preparation method thereof |
| CN110961138B (en) * | 2019-12-25 | 2021-09-28 | 福州大学 | Nitrogen-doped graphene grown in situ by self-assembled denitration sulfur-resistant catalyst and preparation method thereof |
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