JPH10195469A - Fuel additive for solid fuel and its production - Google Patents
Fuel additive for solid fuel and its productionInfo
- Publication number
- JPH10195469A JPH10195469A JP268297A JP268297A JPH10195469A JP H10195469 A JPH10195469 A JP H10195469A JP 268297 A JP268297 A JP 268297A JP 268297 A JP268297 A JP 268297A JP H10195469 A JPH10195469 A JP H10195469A
- Authority
- JP
- Japan
- Prior art keywords
- citric acid
- aqueous solution
- iron
- sodium carbonate
- solid fuel
- 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]
【発明の属する技術分野】本発明は、固形燃料用助燃剤
及びその製造方法に関し、さらにくわしくはクエン酸鉄
酸ソーダ鉄錯塩の水溶液からなる固形燃料用助燃剤及び
その製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary agent for solid fuel and a method for producing the same, and more particularly, to an auxiliary agent for solid fuel comprising an aqueous solution of sodium iron ferrate citrate complex and a method for producing the same.
【０００２】[0002]
【従来の技術】従来、固形燃料用助燃剤の水溶液は、酸
性域では鋼板への腐食性が大きいとの懸念から、ＮａＯ
Ｈまたはアミンを使用し、ｐＨを５．０以上の中性域に
調整を行ってきた。しかし、気温の高い夏などには、水
酸化鉄等の沈殿物が発生し、注入ラインのストレーナつ
まり等が発生し、固形燃料用助燃剤の注入不良を引き起
こすことがあり、安定した効果を長期間維持することが
困難であった。また、ｐＨを５．０以上の中性域に調整
し、注入ライン周辺設備への腐食性の抑制を行って来た
が前記ｐＨでは注入ライン周辺設備への腐食性を抑える
ことは出来ず、これらの問題を解決すべく改善を続けて
きた。2. Description of the Related Art Conventionally, an aqueous solution of a combustion aid for solid fuel has been used in NaO
The pH has been adjusted to a neutral range of 5.0 or more using H or an amine. However, in summer when the temperature is high, precipitates such as iron hydroxide are generated, and strainers in the injection line may be generated, which may cause poor injection of the solid fuel auxiliary agent, and the stable effect is prolonged. It was difficult to maintain for a period. In addition, the pH has been adjusted to a neutral range of 5.0 or more to suppress the corrosiveness to the injection line peripheral equipment. However, the aforementioned pH cannot suppress the corrosiveness to the injection line peripheral equipment, Improvements have been made to solve these problems.
【０００３】[0003]
【発明が解決しようとする課題】鉄錯塩水溶液を作成す
る場合に、クエン酸を使用すると鉄の溶解性が向上し、
鉄の含有量を高濃度化できる点で優れている。しかし、
ｐＨ５．０以上に調整し、鋼材(ＳＳ材料)への腐食の防
止を行った現在でも、次のような問題が残されている。 １．固形燃料用助燃剤のｐＨを５．０以上の中性域に調
整することにより、ＳＳ材料への腐食の対策を行ってい
るが、現在のｐＨ域では腐食性は抑えられず、固形燃料
用助燃剤注入点の周辺設備に腐食がみられる。 ２．気温の高い夏など、水酸化鉄等の沈殿物が発生し、
注入ラインのストレーナつまり等を発生し、固形燃料用
助燃剤の注入不良を引き起こし、安定した効果を発揮出
来ないことがある。 ３．ｐＨ６以上に調整したときは、温度が低い時でも水
酸化鉄の沈殿が発生し、固形燃料用助燃剤製造装置のポ
ンプのストレーナや配管を詰まらせることがある。 また、有効成分である鉄が析出してしまうため、安定し
た鉄含有量の維持が困難になる。When preparing an aqueous solution of an iron complex salt, the use of citric acid improves the solubility of iron,
It is excellent in that the iron content can be increased. But,
Even after adjusting the pH to 5.0 or more to prevent corrosion of steel (SS material), the following problems remain. 1. By adjusting the pH of the solid fuel auxiliary agent to a neutral range of 5.0 or more, countermeasures against corrosion to SS materials are taken. However, the corrosiveness cannot be suppressed in the current pH range. Corrosion is seen in the surrounding equipment at the injection point of the combustion aid. 2. Precipitation such as iron hydroxide occurs in summer when temperature is high,
In some cases, a strainer or the like in the injection line may be generated, causing poor injection of the solid fuel auxiliary agent, and a stable effect may not be exhibited. 3. When the pH is adjusted to 6 or more, precipitation of iron hydroxide occurs even when the temperature is low, which may clog the strainer and piping of the pump of the solid fuel combustion aid manufacturing apparatus. In addition, since iron, which is an active ingredient, precipitates, it becomes difficult to maintain a stable iron content.
【０００４】[0004]
【課題を解決するための手段】硫酸第一鉄及び／又は硫
酸第二鉄とクエン酸と炭酸ソーダ（以下ソーダ灰とい
う）との反応生成物であるクエン酸鉄酸ソーダ鉄錯塩の
水溶液であって、Ｆｅ2Ｏ3で換算して２〜１０重量％を
含有し、そのｐＨはクエン酸とソーダ灰で微調整した
３．５〜４．９を有する固形燃料用助燃剤を使用するこ
とにより、沈殿物の抑制、および助燃剤注入点等のボイ
ラ周辺設備への腐食の緩和を行うことが可能となる。こ
れらの効果によりボイラ周辺設備の腐食の抑制を行い、
従来より設備の寿命の延長が期待出来る。また、本発明
の鉄錯塩固形燃料助燃剤により、水酸化鉄の析出や沈殿
等による助撚剤の注入ラインの閉塞、ストレーナの詰ま
りなどの注入不良を起こすことがほとんど無くなるため
安定的な効果の維持が可能となる。SUMMARY OF THE INVENTION An aqueous solution of a sodium iron ferrate citrate complex which is a reaction product of ferrous sulfate and / or ferric sulfate, citric acid and sodium carbonate (hereinafter referred to as soda ash). By using an auxiliary agent for solid fuel containing 2 to 10% by weight in terms of Fe 2 O 3 and having a pH of 3.5 to 4.9 finely adjusted with citric acid and soda ash. In addition, it is possible to suppress the sediment and to alleviate the corrosion of the boiler peripheral equipment such as the auxiliary agent injection point. With these effects, corrosion of boiler peripheral equipment is suppressed,
It can be expected that the life of the equipment will be longer than before. In addition, the iron complex salt solid fuel auxiliary agent of the present invention has a stable effect because it hardly causes poor injection such as clogging of the injection line of the auxiliary twisting agent due to precipitation or precipitation of iron hydroxide and clogging of the strainer. Maintenance becomes possible.
【０００５】本発明の鉄錯塩固形燃料助燃剤は、クエン
酸とソーダ灰と水溶液に硫酸第一鉄及び／又は硫酸第二
鉄を添加して、それらの反応生成物であるクエン酸鉄酸
ソーダ鉄錯塩をＦｅ2Ｏ3で換算して２〜１０重量％含有
する水溶液を形成し、ここで炭酸ソーダ／クエン酸のモ
ル比は１．３９以上２．０未満で、クエン酸をＦｅ2Ｏ3
の１モルに対し０．１１６〜０．１６５モル使用する、
次いで得られた水溶液のｐＨをクエン酸又はソーダ灰で
３．５〜４．９に微調整することにより製造される。[0005] The iron complex salt solid fuel auxiliary agent of the present invention is obtained by adding ferrous sulfate and / or ferric sulfate to an aqueous solution of citric acid and soda ash, and adding sodium ferrate citrate as a reaction product thereof. An aqueous solution containing an iron complex salt in an amount of 2 to 10% by weight in terms of Fe 2 O 3 is formed, wherein the molar ratio of sodium carbonate / citric acid is 1.39 or more and less than 2.0, and citric acid is converted to Fe 2 O. Three
0.116 to 0.165 mol is used per 1 mol of
It is then produced by finely adjusting the pH of the resulting aqueous solution to 3.5-4.9 with citric acid or soda ash.
【０００６】本発明は、毒性のほとんど無いクエン酸と
ソーダ灰を使用し、錯体を作成するため、作業環境の改
善 にも寄与するものである。本発明は鉄錯塩水溶液の
ｐＨを３．５〜４．９に調整を行うことにより鉄錯塩の
安定化を実現し、鋼管材料に対する腐食性も現在と同
等、またはより良い結果が得られることを見出し、本発
明を達成するにいたった。また、本発明では錯体の形
成、およびｐＨの調整に無害であるソーダ灰を使用する
ことを特徴にしている。このことにより、ＮＨ4ＯＨ、
ＮａＯＨ等の毒劇物指定のアルカリ性薬品を使用する場
合に必要な、特別な資格や設備を必要としないため、製
造設備の簡略化をすることが可能となる。原料はソーダ
灰、クエン酸、硫酸鉄等のほとんど毒のない原料を使用
するため原料の取り扱い等が楽になり、作業環境の向上
をあわせて実現している。According to the present invention, a complex is prepared by using citric acid and soda ash, which have almost no toxicity. The present invention realizes the stabilization of the iron complex salt by adjusting the pH of the aqueous solution of the iron complex salt to 3.5 to 4.9, and achieves the same or better results in the corrosiveness to the steel pipe material as at present. It has been found that the present invention has been achieved. Further, the present invention is characterized by using soda ash which is harmless to complex formation and pH adjustment. This allows NH 4 OH,
Since special qualifications and equipment required when using an alkaline chemical designated as a poisonous substance such as NaOH are not required, the manufacturing equipment can be simplified. Since the raw materials use raw materials having almost no toxicity such as soda ash, citric acid, and iron sulfate, the handling of the raw materials becomes easy, and the working environment is also improved.
【０００７】鉄錯塩水溶液はｐＨ６．０以上となると、
錯体となっている鉄分の一部が水酸基と反応し、水酸化
鉄として析出してしてくることがある。各原料を混合し
て錯塩を作成した場合、ｐＨ６．５以上では硫酸鉄は水
酸化鉄と化してしまい安定した水溶液を作成することは
極めて困難である。そこで、本発明は鉄錯塩水溶液が安
定して錯塩を構成できるｐＨ域の試験を行った。ｐＨの
調整は、クエン酸添加量とソーダ灰添加量の差によって
行った。その１は、クエン酸添加量を固定し、ソーダ灰
添加量を変えてｐＨ調整を行う方法と、その２は、ソー
ダ灰量を固定し、クエン酸添加量を変えｐＨ調整を行う
２種の試験を行なった。それらの結果を、表１と表２に
示す。[0007] When the pH of the iron complex salt aqueous solution becomes 6.0 or more,
Some of the iron in the complex may react with the hydroxyl groups and precipitate as iron hydroxide in some cases. When a complex salt is prepared by mixing the raw materials, iron sulfate is converted to iron hydroxide at a pH of 6.5 or more, and it is extremely difficult to prepare a stable aqueous solution. Therefore, the present invention conducted a test in a pH range where an aqueous solution of an iron complex salt can stably form a complex salt. The pH was adjusted by the difference between the amount of citric acid added and the amount of soda ash added. The first is a method in which the amount of citric acid is fixed and the amount of soda ash is changed to adjust the pH, and the second is a method in which the amount of soda ash is fixed and the amount of citric acid is changed and the pH is adjusted. The test was performed. The results are shown in Tables 1 and 2.
【０００８】[0008]
【表１】 [Table 1]
【０００９】[0009]
【表２】 前記の表１と２の沈殿物量は、添加した鉄量（Ｆｅ2Ｏ3
の１モル）に対する沈殿物量を酸化物換算した値であ
る。[Table 2] The amounts of the precipitates in Tables 1 and 2 are based on the amount of iron added (Fe 2 O 3
(1 mol) in terms of oxide.
【００１０】これらの数値より、基本となる数値は、Ｆ
ｅ2Ｏ3の１モルに対してクエン酸量０．１１６〜０．１
６５モルで、ソーダ灰／クエン酸のモル比２．０以上に
なると沈殿物の発生が始まることが分かる。また、同モ
ル比が１．３９以下になるとｐＨが３．５より低くな
り、配管材料への腐食性が懸念される。よって、本発明
ではソーダ灰／クエン酸のモル比を１．３９以上２．０
未満とすることが、妥当と考えられる。数値には現れて
いないが、ｐＨ５．０以上では鉄錯塩水溶液の表面に結
晶のような膜が出来ることがあった。これらの結果より
本発明では錯塩水溶液のｐＨの上限を、より安定してい
るｐＨ４．９とすることとした。また、鉄錯塩水溶液の
ｐＨを３．５より低くすると鋼管材料への腐食性が懸念
されことからｐＨの下限を３．５とした。さらに、この
下限に関連して、中性域から酸性域にかけての、各ｐＨ
域での鋼管材料に対しての腐食性の確認を室温放置と４
０0Ｃの場合で行なった。それらの結果を、表３と表４
に示す。From these values, the basic value is F
Citric per mole of e 2 O 3 acid amount 0.116 to 0.1
It can be seen that when the molar ratio of soda ash / citric acid becomes 2.0 or more at 65 mol, generation of precipitate starts. Further, when the molar ratio is 1.39 or less, the pH becomes lower than 3.5, and there is a concern about corrosiveness to piping materials. Therefore, in the present invention, the molar ratio of soda ash / citric acid is 1.39 or more and 2.0 or more.
It is considered reasonable to make the value less than. Although not shown in the numerical values, a film like a crystal was sometimes formed on the surface of the aqueous solution of iron complex at a pH of 5.0 or more. Based on these results, in the present invention, the upper limit of the pH of the aqueous solution of the complex salt was set to pH 4.9, which is more stable. Further, if the pH of the aqueous solution of the iron complex salt is lower than 3.5, there is a concern about corrosiveness to the steel pipe material, so the lower limit of the pH was set to 3.5. Further, in relation to this lower limit, each pH from neutral to acidic range
The corrosion of steel pipe materials in the region was confirmed by leaving it at room temperature.
Performed in the case of 0 0 C. Tables 3 and 4 show the results.
Shown in
【００１１】[0011]
【表３】 [Table 3]
【００１２】[0012]
【表４】 試験は表面積２２．８ｃｍ2のＳＳ材質のテストビース
を使用して行なった。室温は１５℃〜２０℃である。ま
た、ｐＨ６．０以上では沈殿物が発生してｐＨが安定し
ないため試験は中止とした。[Table 4] The test was performed using a test bead of SS material having a surface area of 22.8 cm 2 . Room temperature is between 15 ° C and 20 ° C. Further, when the pH was 6.0 or more, a precipitate was generated and the pH was not stabilized, so the test was stopped.
【００１３】減量率はｌｃｍ2に対する１時間あたりの
減量値として計算しているため、上記結果以外の試験に
ついても、ほぼ同様の結果が得られている。これらのデ
ータを基にｐＨと鋼板の腐食性に関するグラフを添付図
面の図１（下記にも示す）に示す。 図１より鋼板への腐食性は、ｐＨ４．０を境に上下双方
で腐食が促進している。そこで、ｐＨの下限値を減量曲
線の大きく立上がる状況から判断してｐＨ域として３．
５〜ｐＨ４．９の妥当性が確認される。Since the weight loss rate is calculated as a weight loss value per hour with respect to 1 cm 2 , almost the same results are obtained in tests other than the above results. Based on these data, a graph relating to pH and the corrosiveness of the steel sheet is shown in FIG. 1 (also shown below) of the accompanying drawings. As shown in FIG. 1, the corrosion of the steel sheet is promoted both above and below the pH of 4.0. Therefore, the lower limit of the pH is determined from the situation where the weight loss curve rises significantly, and the lower limit of the pH is determined as 3.
The validity of 5 to pH 4.9 is confirmed.
【００１４】本発明は、またこれらのｐＨ域を調整範囲
とする鉄錯塩固形燃料剤の製造方法である。本発明の製
法工程において、水にソーダ灰およびクエン酸を溶解さ
せ、次に水溶性の鉄塩を加えて、鉄錯塩水溶液を作成す
る。この際、クエン酸とソーダ灰はどちらを先に水に溶
解させても問題はないが、ソーダ灰を水溶液にした後に
クエン酸を加えた方が鉄錯塩が安定しやすい。次い
で、。作成した鉄錯塩水溶液のｐＨを確認し、ソーダ灰
または、クエン酸によりｐＨの微調整を行い、３．５〜
４．９とする。The present invention is also a method for producing an iron complex salt solid fuel agent in which the pH range is adjusted. In the production process of the present invention, soda ash and citric acid are dissolved in water, and then a water-soluble iron salt is added to prepare an iron complex salt aqueous solution. At this time, it does not matter which of citric acid and soda ash is dissolved in water first, but iron complex salt is more easily stabilized by adding citric acid after converting soda ash into an aqueous solution. Then. The pH of the prepared iron complex salt aqueous solution was confirmed, and the pH was finely adjusted with soda ash or citric acid.
4.9.
【００１５】［実施例］ ＦｅＳ０ 4 を使用して，Ｆ
ｅ2０3として１0重量%の鉄錯塩水溶液を作成する場合、
ソーダ灰/クエン酸のモル比で1．６になる様に調整する
とｐＨ４．５前後となる。この製造方法の具体例を下記
に示す。撹拌タンクに水１５００Ｌを入れ、撹拌を開始
する。ソーダ灰２９Ｋｇ（Ｆｅ2０3に対して０．１９モ
ル）を加え、それが溶解したことを確認した後、クエン
酸３５Ｋｇ（Ｆｅ2０3に対して０．１２モル）を加え、
泡が消えてから３０分以上そのまま撹拌を継続し、得ら
れた溶液を安定させる。この溶液にＦｅＳ０ 4・７Ｈ2
０を８００Ｋｇを加え、溶解させる。形成された錯体を
安定させる為に３０分以上撹拌を行い、色調が黒っぽく
なり状態が安定してきたら撹拌を停止し、ｐＨを確認す
る。この時点でｐＨは４．５前後となるが、水や原料の
加減でｐＨが既定値の４．５とならなかった場合には、
ソーダ灰または、クエン酸によりｐＨの微調整を行う。
製品の安定の向上と不純物の除去の為に、１〜２日静置
した後、製品タンクに移送し、固形燃料用助燃剤として
出荷する。[0015] using the [Example] FeS0 4, F
If the e 2 0 3 to create a 10 wt% of iron complex salt aqueous solution,
When the molar ratio of soda ash / citric acid is adjusted to 1.6, the pH becomes about 4.5. A specific example of this manufacturing method is shown below. Pour 1500 L of water into the stirring tank and start stirring. Soda ash 29Kg of (0.19 mol relative to Fe 2 0 3) was added and after confirming the 35Kg citric acid (0.12 moles relative to Fe 2 0 3) was added that it has dissolved,
Stirring is continued for 30 minutes or more after the disappearance of the foam to stabilize the obtained solution. To this solution FeS0 4 · 7H 2
Add 800 kg of 0 and dissolve. Stirring is performed for 30 minutes or more to stabilize the formed complex. When the color tone becomes dark and the state becomes stable, the stirring is stopped and the pH is confirmed. At this point, the pH is around 4.5, but if the pH does not reach the predetermined value of 4.5 due to the adjustment of water and raw materials,
Fine-tune the pH with soda ash or citric acid.
In order to improve the stability of the product and remove impurities, it is allowed to stand for 1 to 2 days, then transferred to the product tank and shipped as an auxiliary agent for solid fuel.
【００１６】[0016]
【発明の効果】本発明では下記（１）〜（３）のような
優れた効果を有する。 （１）ｐＨ弱酸性にすることにより鉄錯塩水溶液の安定
性が極めて上昇し、沈殿物の発生をほぼ０にすることが
出来る。 （２）錯塩の形成とｐＨの調整に、ほとんど無害なソー
ダ灰を使用することにより製造設備の簡略化が可能とな
り、コストの削減が可能となる。また、作業の安全性も
増し、作業環境に対しても良い結果が得られる。 （３）鋼管材料に対する腐食性を向上させることが出来
る。The present invention has the following excellent effects (1) to (3). (1) By making the pH weakly acidic, the stability of the iron complex salt aqueous solution is extremely increased, and the generation of precipitates can be reduced to almost zero. (2) The use of almost harmless soda ash for the formation of the complex salt and the adjustment of the pH makes it possible to simplify the production equipment and reduce the cost. In addition, work safety is increased, and good results are obtained for the work environment. (3) Corrosion to steel pipe material can be improved.
【図面の簡単な説明】[Brief description of the drawings]
【図１】鉄錯塩水溶液のｐＨと鋼板の腐食性の関連性を
示すグラフである。FIG. 1 is a graph showing the relationship between the pH of an aqueous solution of an iron complex salt and the corrosiveness of a steel sheet.
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【手続補正書】[Procedure amendment]
【提出日】平成９年１月１７日[Submission date] January 17, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１３】減量率はｌｃｍ2に対する１時間あたりの
減量値として計算しているため、上記結果以外の試験に
ついても、ほぼ同様の結果が得られている。これらのデ
ータを基にｐＨと鋼板の腐食性に関するグラフを添付図
面の図１に示す。該図１において、鋼板への腐食性は、
ｐＨ４．０を境に上下双方で腐食が促進している。そこ
で、ｐＨの下限値を減量曲線の大きく立上がる状況から
判断してｐＨ域として３．５〜ｐＨ４．９の妥当性が確
認される。Since the weight loss rate is calculated as a weight loss value per hour with respect to 1 cm 2 , almost the same results are obtained in tests other than the above results. Based on these data, a graph relating to pH and the corrosiveness of the steel sheet is shown in FIG. 1 of the accompanying drawings. In FIG. 1, the corrosiveness of the steel sheet is as follows:
Corrosion is promoted both above and below the pH of 4.0. Then, judging the lower limit of pH from the situation where the weight loss curve rises significantly, the validity of 3.5 to 4.9 as the pH range is confirmed.
Claims (2)
ン酸と炭酸ソーダとの反応生成物であるクエン酸鉄酸ソ
ーダ鉄錯塩の水溶液であって、Ｆｅ2Ｏ3で換算して２〜
１０重量％を含有し、そのｐＨはクエン酸と炭酸ソーダ
で微調整した３．５〜４．９を有する固形燃料用助燃
剤。1. An aqueous solution of a complex of sodium iron ferrate citrate, which is a reaction product of ferrous sulfate and / or ferric sulfate with citric acid and sodium carbonate, in terms of Fe 2 O 3. Two
An auxiliary agent for solid fuel containing 10% by weight and having a pH of 3.5 to 4.9 finely adjusted with citric acid and sodium carbonate.
第一鉄及び／又は硫酸第二鉄を添加して、それらの反応
生成物であるクエン酸鉄酸ソーダ鉄錯塩をＦｅ2Ｏ3で換
算して２〜１０重量％含有する水溶液を形成し、ここで
炭酸ソーダ／クエン酸のモル比は１．３９以上２．０未
満で、クエン酸をＦｅ2Ｏ3の１モルに対し０．１１６〜
０．１６５モル使用する、次いで得られた水溶液のｐＨ
をクエン酸又は炭酸ソーダで３．５〜４．９に微調整す
ることを特徴とする固形燃料用助燃剤の製造方法。2. Ferrous sulfate and / or ferric sulfate are added to an aqueous solution of citric acid and sodium carbonate, and their reaction product, sodium iron ferrate citrate complex, is added with Fe 2 O 3 . An aqueous solution containing 2 to 10% by weight in terms of conversion was formed, wherein the molar ratio of sodium carbonate / citric acid was 1.39 or more and less than 2.0, and 0.3% of citric acid was added to 1 mol of Fe 2 O 3 . 116 ~
0.165 mol used, then the pH of the resulting aqueous solution
Is finely adjusted to 3.5 to 4.9 with citric acid or sodium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP268297A JPH10195469A (en) | 1997-01-10 | 1997-01-10 | Fuel additive for solid fuel and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP268297A JPH10195469A (en) | 1997-01-10 | 1997-01-10 | Fuel additive for solid fuel and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10195469A true JPH10195469A (en) | 1998-07-28 |
Family
ID=11536075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP268297A Pending JPH10195469A (en) | 1997-01-10 | 1997-01-10 | Fuel additive for solid fuel and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10195469A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061212A (en) * | 2009-11-16 | 2011-05-18 | 中冶建筑研究总院有限公司 | Fire coal efficient catalysis combustion-supporting agent and preparation method and use method thereof |
| CN105238492A (en) * | 2015-10-15 | 2016-01-13 | 阳开金 | Coal-saving combustion-supporting preparation and preparation method thereof |
| KR20200123577A (en) * | 2019-04-22 | 2020-10-30 | 정필진 | Method for manufacturing environment-friendly flammable substance combustion power improver |
-
1997
- 1997-01-10 JP JP268297A patent/JPH10195469A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061212A (en) * | 2009-11-16 | 2011-05-18 | 中冶建筑研究总院有限公司 | Fire coal efficient catalysis combustion-supporting agent and preparation method and use method thereof |
| CN105238492A (en) * | 2015-10-15 | 2016-01-13 | 阳开金 | Coal-saving combustion-supporting preparation and preparation method thereof |
| KR20200123577A (en) * | 2019-04-22 | 2020-10-30 | 정필진 | Method for manufacturing environment-friendly flammable substance combustion power improver |
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