JPS6349230A - Production of absorbent for wet flue gas desulfurization from shell - Google Patents
Production of absorbent for wet flue gas desulfurization from shellInfo
- Publication number
- JPS6349230A JPS6349230A JP61192281A JP19228186A JPS6349230A JP S6349230 A JPS6349230 A JP S6349230A JP 61192281 A JP61192281 A JP 61192281A JP 19228186 A JP19228186 A JP 19228186A JP S6349230 A JPS6349230 A JP S6349230A
- Authority
- JP
- Japan
- Prior art keywords
- shells
- dried
- absorbent
- desulfurization
- 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.)
- Pending
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 22
- 230000023556 desulfurization Effects 0.000 title claims abstract description 22
- 239000002250 absorbent Substances 0.000 title claims abstract description 20
- 230000002745 absorbent Effects 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title description 4
- 239000003546 flue gas Substances 0.000 title description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 4
- 235000015170 shellfish Nutrition 0.000 claims description 15
- 235000013372 meat Nutrition 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 8
- 235000010216 calcium carbonate Nutrition 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 2
- 239000005416 organic matter Substances 0.000 description 16
- 235000019738 Limestone Nutrition 0.000 description 10
- 239000006028 limestone Substances 0.000 description 10
- 239000000292 calcium oxide Substances 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 4
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 3
- 235000010261 calcium sulphite Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000238557 Decapoda Species 0.000 description 2
- 241000237536 Mytilus edulis Species 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000020638 mussel Nutrition 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000238424 Crustacea Species 0.000 description 1
- 241000237502 Ostreidae Species 0.000 description 1
- 101100009643 Papaver somniferum CODM gene Proteins 0.000 description 1
- 241000237503 Pectinidae Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004455 differential thermal analysis Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000004442 gravimetric analysis Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 235000020637 scallop Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、湿式排煙脱硫用吸収剤の製造方法に係り、さ
らに詳しくは乾燥処理した貝殻を焼却して脱硫吸収剤に
好適な高純度の炭酸カルシウムを得る方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing an absorbent for wet flue gas desulfurization, and more specifically, the present invention relates to a method for producing an absorbent for wet flue gas desulfurization, and more specifically, it involves incinerating dried seashells to obtain a high-purity product suitable for a desulfurization absorbent. The present invention relates to a method for obtaining calcium carbonate.
本発明において貝類とは、ムラサキイ貝、ホタテ貝、か
き殻、さらにはかにやえび等の甲殻類等を総称する用語
とする。In the present invention, shellfish is a term that collectively refers to crustaceans such as mussels, scallops, oyster shells, and even crabs and shrimps.
火力、原子力発電所では冷却水路系において、大量の貝
類が生育し取水可能量の低減など種々の障害を起こして
いる。このため年−同程度の割合で点検を行い貝類を除
去している。この貝類は、その肉として、また貝殻に付
着した残渣として相当量の有機物を含むため、廃棄、堆
積に際して徐々に腐敗し悪臭を放つことは衆知のことで
ある。At thermal and nuclear power plants, large amounts of shellfish grow in the cooling waterway systems, causing various problems such as a reduction in the amount of water available for intake. For this reason, shellfish are removed by inspection at a similar rate every year. It is well known that these shellfishes contain a considerable amount of organic matter both as their flesh and as residues attached to their shells, so that they gradually decompose and emit a foul odor when they are disposed of or piled up.
そのため、発電所ではこの除去貝を海中投棄あるいは埋
立て処分等を行ってきたが、運搬に際し放つ悪臭問題、
埋立地の確保等、次第にこうした投棄処分は難しくなっ
ている。そこで除去した貝類を乾燥処分した後、粗粉砕
し、貝類に付着した肉類を機械的に取り除き、貝殻の有
効利用化が望まれている関電、総合技術研究所資料:冷
却水路系からの除去貝の殻・肉分離法の試験研究)。こ
の殻と肉とを分離した後の貝殻は、水分が多く悪臭の強
い有機物が取り除かれ、資源化を図る上で、その取扱い
が容易となる。For this reason, power plants have dumped the removed shellfish into the sea or disposed of them in landfills, but this has caused problems with the odor emitted during transportation.
This type of dumping is becoming increasingly difficult due to issues such as securing landfill sites. After drying and disposing of the shellfish removed there, it is desired to make effective use of the shells by coarsely crushing them and mechanically removing the meat attached to the shellfish. KEPCO, Research Institute of Technology Materials: Shellfish removed from the cooling waterway system Experimental research on shell/meat separation method). After the shell and meat have been separated, the shell has a high moisture content and strong foul-smelling organic matter is removed, making it easier to handle for recycling.
本発明者は、このように処理した貝殻が、脱硫吸収剤と
しての炭酸カルシウム剤として採用できるか否かについ
て種々検討を行ったが、貝殻に残留する少量の有機物が
悪影響を及ぼし直ぐには採用され得ない。そこで、この
有機物を除去し脱硫吸収剤として利用すべく検討を行い
、本発明に至ったものである。The present inventor conducted various studies as to whether or not the shells treated in this way could be used as a calcium carbonate agent as a desulfurization absorbent, but the small amount of organic matter remaining in the shells had an adverse effect and it was not immediately adopted. I don't get it. Therefore, we conducted studies to remove this organic matter and use it as a desulfurization absorbent, which led to the present invention.
冷却水路系から採取した除去貝は、平均殻長10cMの
ムラサキイガイであり、これを0.5〜3cm程度まで
阻粉砕・乾燥処理した後、分級機で付着している貝肉が
取り除かれる(前記資料)。ここで得られた乾燥貝殻阻
砕物(0,6〜10.0印m)(以下乾燥貝殻と略す)
を粉砕処理して微粉末にした後、これに水を加えて10
wt%の濃度に調製したスラリの演色は茶色〜黄色に着
色し、さらにC0Dun (100’Cにおける過マン
ガン酸カリウム酸素消費量)を測定した結果、約1,0
00ppmと高い値を示した。The removed shellfish collected from the cooling channel system are mussels with an average shell length of 10 cm, and after being crushed and dried to about 0.5 to 3 cm, the attached shellfish meat is removed using a classifier (as described above). Document). Dry shell fragments obtained here (0.6 to 10.0 mark m) (hereinafter abbreviated as dry shell)
After pulverizing it into a fine powder, add water to it for 10 minutes.
The color rendering of the slurry prepared to a concentration of wt% was brown to yellow, and the C0Dun (potassium permanganate oxygen consumption at 100'C) was measured to be approximately 1.0
It showed a high value of 00 ppm.
また、これにH2SO,水を加えて亜硫酸カルシウム(
Ca S O) ’ 1/ 2 H−0)を調製した後
、空気を吹き込み酸化処理を行った結果、第1図(図中
0印)に示すように石灰石と比較して酸化速度が著しく
小さく、また得られた石膏は悪臭を発した。Also, add H2SO and water to this and add calcium sulfite (
After preparing CaSO)' 1/2H-0), we oxidized it by blowing air into it, and as a result, as shown in Figure 1 (marked 0 in the figure), the oxidation rate was significantly lower than that of limestone. , and the resulting plaster emitted a foul odor.
本発明の目的は、こうした乾燥貝殻中に含まれる有機物
を完全に除き、脱硫吸収剤として利用できる高純度の炭
酸カルシウムを得る方法を提供することにある。An object of the present invention is to provide a method for completely removing organic matter contained in such dried shells and obtaining highly pure calcium carbonate that can be used as a desulfurization absorbent.
除去貝を乾燥処理して、機械的に貝殻と肉を分離して得
られた乾燥貝殻は、これに残留した肉に起因する有機物
が悪影響を及ぼし、脱硫吸収剤として利用できない。従
って、脱硫吸収剤として適用するには、この有機物を完
全に除去することが必要である。そこで、乾燥貝殻を電
気炉を用いて、所定温度、所定時間以上加熱処理した焼
却貝殻を用いて前記した方法により亜硫酸カルシウムの
酸化処理を行ったが、酸化速度は大幅に改良され。The dried shells obtained by drying the removed shellfish and mechanically separating the shells from the meat cannot be used as a desulfurization absorbent because the organic matter originating from the remaining meat has an adverse effect on the dried shells. Therefore, in order to apply it as a desulfurization absorbent, it is necessary to completely remove this organic matter. Therefore, the oxidation treatment of calcium sulfite was performed by the method described above using incinerated shells that had been heated in an electric furnace at a predetermined temperature for a predetermined period of time or longer, but the oxidation rate was significantly improved.
通常排煙脱硫用吸収剤として使用されている石灰石とほ
ぼ同等とすることができると判明した。It was found that it can be made almost equivalent to limestone, which is normally used as an absorbent for flue gas desulfurization.
また、乾燥貝殻を石灰石−石膏性湿式脱硫装置用の脱硫
用吸収剤として利用できるようにするには、Ca CO
3を分解せず前記有機物を除去せねばならず所定温度、
所定時間以下の加熱処理としなければならない。In addition, in order to be able to utilize dried shells as desulfurization absorbent for limestone-gypsum wet desulfurization equipment, Ca CO
3, the organic matter must be removed without decomposing the organic matter at a predetermined temperature;
The heat treatment must be performed for a specified time or less.
これら2つの加熱温度、加熱時間の範囲は、後述するよ
うに第2図及び第3図に示される適用可能域を共に満す
範囲である。These two ranges of heating temperature and heating time are ranges that both satisfy the applicable range shown in FIGS. 2 and 3, as described later.
以下、これらの加熱温度、加熱時間の範囲を、説明する
。The ranges of these heating temperatures and heating times will be explained below.
乾燥貝殻を所定量(2og)秤量して電気炉を(内容積
:3Q)を用いて、加熱温度400〜600℃、加熱時
間0.5〜2hの範囲で焼却処理した。この焼却処理し
た貝殻をボールミルで粉砕処理したものに水を加えてス
ラリ(10wt%)を調製し、上澄液のC,0DHnを
測定して残留する有機物量を調べたのが第2図である。A predetermined amount (2 og) of dried shells was weighed and incinerated using an electric furnace (inner volume: 3Q) at a heating temperature of 400 to 600°C and a heating time of 0.5 to 2 hours. The incinerated shells were ground in a ball mill, water was added to prepare a slurry (10wt%), and the amount of residual organic matter was investigated by measuring C and 0DHn in the supernatant, as shown in Figure 2. be.
加熱温度450℃以上で加熱処理することにより、CO
DMnは10ppm以下の値となり乾燥貝殻に付着して
いる有機物(COD値: 1,000ppm)は99%
以上分解される。このようにして得られた貝殻では第1
図に示したように、亜硫酸カルシウムから石膏への酸化
が石灰石と同等の速度で進み、脱硫用吸収剤として使用
が可能となる。By heat treatment at a heating temperature of 450°C or higher, CO
DMn is less than 10 ppm, and organic matter (COD value: 1,000 ppm) attached to dried shells is 99%.
The above is decomposed. Among the shells obtained in this way, the first
As shown in the figure, oxidation of calcium sulfite to gypsum progresses at the same rate as limestone, making it possible to use it as an absorbent for desulfurization.
また第2図に示されるように付着有機物を完全に焼却除
去するには、加熱温度を高くすることにより達成される
。しかしながら、通常、試薬のCaCO2は、700℃
付近から次式に従いCaC○、が徐々に分解して酸化カ
ルシウム(C;ao)となることが知られている。Further, as shown in FIG. 2, complete incineration and removal of attached organic matter can be achieved by increasing the heating temperature. However, the reagent CaCO2 is usually heated to 700°C.
It is known that CaC○ gradually decomposes into calcium oxide (C; ao) from the vicinity according to the following formula.
CaC0,→ CaO+GO,↑=−・−(1)>7
00℃
脱硫吸収剤として使用する場合、CaOが多量に存在す
るとスラリのPHが上昇し、CaC0゜の溶解速度の低
下(脱硫性能の低下)、塔内でのスケーリング、副生石
膏の純度低下等の問題を生じることが懸念される。した
がって、CaC0゜の分解を起こさない温度を決定する
ことが必要である。そこで、乾燥貝殻を加熱温度、時間
を変えて焼却し、この焼却処理物をX線回折法を用いて
CaOの検出の有無を調べた。第3図にその結果を示す
が、650℃、1時間以上加熱するとCaOが検出(C
a01%以上含有)L、600℃以下では全く検出され
なかった。CaC0, → CaO+GO, ↑=-・-(1)>7
00℃ When used as a desulfurization absorbent, the presence of a large amount of CaO will increase the pH of the slurry, causing problems such as a decrease in the dissolution rate of CaC0℃ (decrease in desulfurization performance), scaling in the tower, and a decrease in the purity of by-product gypsum. There are concerns that this may cause problems. Therefore, it is necessary to determine a temperature that does not cause decomposition of CaC0°. Therefore, dried shells were incinerated at different heating temperatures and times, and the incinerated product was examined for the presence or absence of CaO detection using X-ray diffraction. The results are shown in Figure 3, and when heated at 650°C for over 1 hour, CaO was detected (C
(containing a01% or more) was not detected at all at temperatures below 600°C.
第4図は、乾燥貝殻と石灰石の示差熱・熱重量分析を行
った結果を比較して示すが、乾燥貝殻の重量減少開始温
度すなわちCaC0,が分解を起す温度は620℃付近
からであり石灰石(650℃)よりも30℃程低い、ま
た、貝殻の融点(740℃)も石灰石(770℃)に比
較して低い。Figure 4 shows a comparison of the results of differential thermal/thermogravimetric analysis of dried seashells and limestone. (650°C), and the melting point of shells (740°C) is also lower than that of limestone (770°C).
以上の結果から、 Ca CO,の形態でとどめるには
、加熱温度を600℃以下とすることが必要であること
が明らかとなった。From the above results, it has become clear that the heating temperature must be 600° C. or lower in order to maintain the Ca CO form.
尚、第1表に、乾燥貝殻、貝殻焼却物(550℃、lh
r処理)及び石灰石の組成分析結果の一例を示す。貝殻
を焼却すると、Ca CO3純度が97%となり未処理
の貝殻に比較して約り0%純度が向上し、石灰石に近い
性状のものが得られる。In addition, Table 1 shows dried shells, burned shells (550°C, lh
(r treatment) and limestone composition analysis results are shown below. When the shells are incinerated, the purity of CaCO3 becomes 97%, which is approximately 0% higher in purity than untreated shells, resulting in products with properties similar to limestone.
また、有機物に起因する燃焼性C,H,N等が低減し、
悪臭を全く発生しないものとなり、脱硫吸収剤として使
用可能な性状のものが得られた。In addition, combustible C, H, N, etc. caused by organic matter are reduced,
The product did not generate any bad odor and had properties that could be used as a desulfurization absorbent.
第5図は、本発明を実施するにあたり、最低必要な装置
を配したフロー図である。FIG. 5 is a flow diagram illustrating the minimum necessary equipment for implementing the present invention.
大部分の貝肉を機械的に除去した乾燥貝殻(阻砕物)は
、乾燥貝殻ホッパ1からスクリューフィーダ2を通じて
定量的に焼却炉3に入り、ここで450〜600℃の温
度範囲に保ちながら焼却処理して残留する有機物を完全
に分解除去して、CaCO3純度を高める。焼却処理し
た貝殻はうイン11を通じて炭カル(炭酸カルシウムの
こと。The dried shells (crushed material) from which most of the shellfish meat has been mechanically removed are quantitatively fed into the incinerator 3 from the dry shell hopper 1 through the screw feeder 2, where they are incinerated while being maintained at a temperature range of 450 to 600°C. The treatment completely decomposes and removes residual organic matter to improve CaCO3 purity. The incinerated shells are passed through the incineration process to produce charcoal (calcium carbonate).
以下同じ、)阻砕物ホッパ6に貯蔵し、次に粉砕機7で
微粉末にして脱硫用の吸収剤8として利用する。なお、
焼却炉から排出するガスはバグフィルタ4を用いて飛散
したガス中の炭カルを回収し、さらに排ガス中に有機物
の分解にともない発生する臭気性ガスを脱臭塔5により
取り除き、大気へ放出する。尚、図中の11,12.1
3は炭カル回収ライン、14はサイクロン回収ライン、
15゜16.17は排ガスラインである。The same applies hereinafter)) The crushed material is stored in a hopper 6, and then pulverized by a pulverizer 7 to be used as an absorbent 8 for desulfurization. In addition,
The gas discharged from the incinerator uses a bag filter 4 to collect scattered carbonaceous gas, and furthermore, a deodorizing tower 5 removes odorous gas generated from the decomposition of organic matter in the exhaust gas and releases it into the atmosphere. In addition, 11, 12.1 in the figure
3 is a coal cal recovery line, 14 is a cyclone recovery line,
15°16.17 is the exhaust gas line.
従来、貝類から肉を分離した貝殻は、減容化されるが、
これを資源として有効に利用することができなかった。Traditionally, shells are reduced in volume by separating the meat from shellfish, but
This could not be used effectively as a resource.
本発明によれば、この乾燥貝殻中に含まれる有機物を焼
却処理して取り除くことにより、脱硫用吸収剤とし十分
利用できる組成のものとなり、更に、副生ずる石膏も悪
臭を発せず、石灰石を使用した場合とほぼ同等の良質な
ものが得られ、貝殻の有効利用化が図れる。According to the present invention, by incinerating and removing the organic matter contained in the dried shells, the composition becomes suitable for use as an absorbent for desulfurization, and furthermore, the by-product gypsum does not emit a bad odor, and limestone can be used. It is possible to obtain products of almost the same quality as those obtained by using the method, and the effective use of shells can be achieved.
第1図は乾燥貝殻、貝殻焼却物及び石灰石に亜硫酸水を
加えて生成させた亜硫酸塩を酸化処理した場合の酸化速
度の比較を示す図、第2図は乾燥貝殻を焼却処理条件を
変えて得られた貝殻焼却物のスラリ上澄液中のCODM
n値を示す図、第3図は各種焼却条件で得られた焼却物
をX線回折によりCa○生成の有無を調べた結果を示す
図、第4図は乾燥貝殻と石灰石の示差熱、熱重量分析結
果を示す図、第5図は本発明を実施するにあたり最低必
要なフロー図である。Figure 1 shows a comparison of oxidation rates when sulfites produced by adding sulfite water to dried shells, shell incineration, and limestone are oxidized. CODM in the slurry supernatant of the obtained shellfish incineration
Figure 3 is a diagram showing the n value, Figure 3 is a diagram showing the results of examining the presence or absence of Ca○ formation by X-ray diffraction of the incinerated matter obtained under various incineration conditions, Figure 4 is the differential heat and heat of dried shells and limestone. FIG. 5, which is a diagram showing the results of gravimetric analysis, is a minimum necessary flow chart for carrying out the present invention.
Claims (2)
た乾燥貝殻を用いて、第2図及び第3図に示す加熱温度
、加熱時間の通用可能域を共に満す温度時間範囲で、加
熱焼却処理することを特徴とする脱硫吸収剤の製造方法
。(1) Using dried shells from which most of the attached meat has been removed by drying shellfish, the temperature and time ranges that satisfy both the applicable heating temperature and heating time ranges shown in Figures 2 and 3 are used. A method for producing a desulfurization absorbent, which comprises heating and incinerating it.
砕物スラリ(10wt%)上澄液のCOD_Mn値が3
0ppm以下となるまで加熱焼却処理することを特徴と
した脱硫吸収剤の製造方法。(2) In claim 1, the COD_Mn value of the supernatant liquid of the incinerated pulverized shell slurry (10 wt%) is 3.
A method for producing a desulfurization absorbent characterized by carrying out heating and incineration treatment until the concentration becomes 0 ppm or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61192281A JPS6349230A (en) | 1986-08-18 | 1986-08-18 | Production of absorbent for wet flue gas desulfurization from shell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61192281A JPS6349230A (en) | 1986-08-18 | 1986-08-18 | Production of absorbent for wet flue gas desulfurization from shell |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6349230A true JPS6349230A (en) | 1988-03-02 |
Family
ID=16288666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61192281A Pending JPS6349230A (en) | 1986-08-18 | 1986-08-18 | Production of absorbent for wet flue gas desulfurization from shell |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6349230A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003015898A2 (en) * | 2001-08-17 | 2003-02-27 | Carafiltration Limited | Gas and odour treatment |
CN114588770A (en) * | 2022-03-29 | 2022-06-07 | 宁波太极环保设备有限公司 | Egg shell powder modified steel slag waste modified desulphurization absorbent and preparation method thereof |
-
1986
- 1986-08-18 JP JP61192281A patent/JPS6349230A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003015898A2 (en) * | 2001-08-17 | 2003-02-27 | Carafiltration Limited | Gas and odour treatment |
WO2003015898A3 (en) * | 2001-08-17 | 2003-05-22 | Carafiltration Ltd | Gas and odour treatment |
US7250067B2 (en) | 2001-08-17 | 2007-07-31 | Carafiltration Limited | Gas and odour treatment |
CN114588770A (en) * | 2022-03-29 | 2022-06-07 | 宁波太极环保设备有限公司 | Egg shell powder modified steel slag waste modified desulphurization absorbent and preparation method thereof |
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