JPS62190289A - Method for burning solid fuel - Google Patents
Method for burning solid fuelInfo
- Publication number
- JPS62190289A JPS62190289A JP61031846A JP3184686A JPS62190289A JP S62190289 A JPS62190289 A JP S62190289A JP 61031846 A JP61031846 A JP 61031846A JP 3184686 A JP3184686 A JP 3184686A JP S62190289 A JPS62190289 A JP S62190289A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- combustion
- combustion improver
- solid fuel
- acid
- 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
- 239000004449 solid propellant Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 43
- 150000002505 iron Chemical class 0.000 claims abstract description 7
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 4
- 150000004698 iron complex Chemical class 0.000 claims abstract 3
- 239000012266 salt solution Substances 0.000 claims description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 9
- 239000007864 aqueous solution Substances 0.000 abstract description 9
- 239000000571 coke Substances 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 8
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 239000003245 coal Substances 0.000 abstract description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 abstract description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 abstract description 2
- 235000006408 oxalic acid Nutrition 0.000 abstract description 2
- 239000011975 tartaric acid Substances 0.000 abstract description 2
- 235000002906 tartaric acid Nutrition 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 abstract 1
- 235000015165 citric acid Nutrition 0.000 abstract 1
- 239000001632 sodium acetate Substances 0.000 abstract 1
- 235000017281 sodium acetate Nutrition 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- -1 iron complex ion Chemical class 0.000 description 9
- 239000000446 fuel Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 239000002006 petroleum coke Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000009841 combustion method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000014413 iron hydroxide Nutrition 0.000 description 3
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010344 co-firing Methods 0.000 description 2
- 239000011335 coal coke Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 150000001341 alkaline earth metal compounds Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- PVFSDGKDKFSOTB-UHFFFAOYSA-K iron(3+);triacetate Chemical compound [Fe+3].CC([O-])=O.CC([O-])=O.CC([O-])=O PVFSDGKDKFSOTB-UHFFFAOYSA-K 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid-Fuel Combustion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、固体燃料の燃焼方法に関し、更に詳しくは、
石戻焚きボイラ、石油コークス焚きボイラにおける固体
燃料の未燃分抑制及び電気集じん徐による集じん効率向
上上目的とした固形炉径の燃焼方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a solid fuel combustion method, and more specifically,
This invention relates to a combustion method for solid furnace diameters aimed at suppressing unburned solid fuel in stone-return-fired boilers and petroleum coke-fired boilers and improving dust collection efficiency through electrostatic precipitation.
近年、石油代替燃料として石炭、石油コークス等の固体
燃料が多く使用されるようになってきた。しかし、石炭
、石油コークスは重油などの液体燃料と比べて揮発分が
少ないため、燃焼性が悪くボイラ燃料としては微粉砕し
て使用されるが、それでも未燃分は数％〜士数％に達す
るため、石油コークスｔｅ料とするボイラでは助燃用に
１油またはガス燃焼を併用せざるを得なく、運転操作面
でのわずられしさに加えて経済性の面でも不満足の状況
にある。In recent years, solid fuels such as coal and petroleum coke have come into widespread use as alternative fuels to petroleum. However, coal and petroleum coke have less volatile content than liquid fuels such as heavy oil, so they have poor combustibility and are used as boiler fuel after being pulverized, but the unburned content still remains at a few percent to several percent. In order to achieve this, boilers using petroleum coke as feedstock must use oil or gas combustion for auxiliary combustion, which is not only cumbersome in terms of operation but also unsatisfactory in terms of economy.
助燃用の１油、ガスの使用ｆを減らず方法の一つに助燃
剤の過用があり、助燃剤として古くからＯｕ、Ｇｏ、Ｎ
ｉ、Ｍｎ、Ｆｅなどの１金桟、Ｋ、Ｎａなどのアルカリ
金属化合物、Ｃａ、Ｂａなどのアルカリ土類金属化合物
などが使用されているのは周知の通りであるが、最近で
は、特に安価で且つ脱硝触媒の活性に対し影響が少ない
ことから鉄系の助燃剤が注目され市販されている。One of the ways to reduce the use of oil and gas for combustion support is to overuse combustion improvers.
It is well known that metal bars such as i, Mn, and Fe, alkali metal compounds such as K and Na, and alkaline earth metal compounds such as Ca and Ba are used. Iron-based combustion improvers have attracted attention and are commercially available because they have little effect on the activity of the denitrification catalyst.
鉄系助燃剤に鉱油溶性及び水溶性の２＆類があジ、油溶
性の代表的なものにはナフテン酸鉄、オクチル酸鉄など
があり、重油などの液体燃料に混合して使用される。一
方、水溶性は石炭、コークスなどの固体燃料に含浸、混
合して使用される。There are two types of iron-based combustion improvers: mineral oil-soluble and water-soluble. Typical oil-soluble ones include iron naphthenate and iron octylate, which are used by mixing with liquid fuels such as heavy oil. On the other hand, water-soluble materials are used by being impregnated and mixed with solid fuels such as coal and coke.
石炭、コークスなどの燃焼助剤の使用に当って、ｌ油混
焼の場合は油溶性助燃剤を１油に添加する方法が採られ
るがガス混焼の場合はガスへのｌｊ加が困難であるため
、通常水溶性助燃剤を石炭、コークスに含浸、混合して
′使用する。When using combustion aids such as coal and coke, in the case of oil co-firing, the method is to add an oil-soluble combustion aid to the oil, but in the case of gas co-firing, it is difficult to add lj to the gas. Usually, a water-soluble combustion improver is impregnated and mixed with coal or coke.
しかし、鉄系水溶性助燃剤では次のような問題があシ、
実用化を阻害している。However, iron-based water-soluble combustion improvers have the following problems:
This is hindering practical application.
１ 助燃剤原料の鉄塩、即ち硫酸鉄、塩化鉄、硝酸鉄、
醋酸鉄などはいずれも水溶液にすると加水分解してｐ）
１５以下の酸性となり、装置材料を腐食する。1 Iron salts as raw materials for combustion improvers, i.e. iron sulfate, iron chloride, iron nitrate,
When iron acetate is made into an aqueous solution, it hydrolyzes p)
It becomes acidic below 15 and corrodes equipment materials.
２ アルカリヲ加えて中和すると水酸化鉄の沈殿を生じ
、ポンプによる定量供給が困難である。2. Neutralization by adding alkali causes iron hydroxide to precipitate, making it difficult to supply a fixed amount using a pump.
五 塩化鉄は燃焼によってＣ１２，Ｈ（ｉ／などの腐食
性ガスを発止し、また硝酸鉄はＮＯｘの生成原因となる
。Penta-iron chloride releases corrosive gases such as C12, H(i/) when burned, and iron nitrate causes the formation of NOx.
４、 溶解度の関係で大量の水が必要であり、助燃剤の
タンク容量が大きくなる。4. Due to solubility, a large amount of water is required, which increases the tank capacity of the combustion improver.
また、鉄系油溶性助燃剤では、そのもの自体が高価であ
る上に、重油に混合した際に鳳々スランジを生成し１油
ラインのストレーナまたは重油バーナの閉塞などボイラ
運転上致命的なトラブルを発止するケースがある。In addition, iron-based oil-soluble combustion improvers are not only expensive, but also generate sludge when mixed with heavy oil, which can cause fatal troubles in boiler operation such as blockages in the strainer or heavy oil burner of the first oil line. There are cases where it will be stopped.
本発明は上述した従来法におけるような欠点のない固体
燃料の燃焼法を提供しようとするものである。The present invention seeks to provide a solid fuel combustion method that does not have the drawbacks of the conventional methods mentioned above.
本発明は、固体燃料の助燃剤として鉄塩水溶液を適用す
るに当り、鉄を錯イオンとして安定化させることにより
、Ｆｉｌ ５以上でも鉄を可溶性とし、腐食に対しても
安全でしかも助燃効果を最大限に発揮可能とした新規な
助燃剤の使用法を提供するものである。In applying an iron salt aqueous solution as a combustion improver for solid fuel, the present invention stabilizes iron as a complex ion, making the iron soluble even at Fil 5 or higher, making it safe against corrosion and having a combustion support effect. This provides a new method of using a combustion improver that can be used to its maximum potential.
すなわち本発明は鉄塩水溶液に対し、鉄錯イオン形成物
１ＪＬｔ−添加したのち、中性付近まで中和して得られ
る助燃剤を固体燃料に含浸または混合したのち燃焼させ
ることを％徴とする固体燃料の燃焼方法である。That is, the present invention is characterized by adding 1 JLt of an iron complex ion former to an aqueous iron salt solution, and then neutralizing the mixture to near neutrality, impregnating or mixing the combustion improver into a solid fuel, and then burning the mixture. This is a method of burning solid fuel.
鉄塩水溶液に鉄錯イオン形成物質例えはクエン酸を加え
ることによっで鉄錯イオンとし、次いでＮａＯＨ，ＮＨ
４ＯＨなどの中和剤を加えて腐食に対して安定な領域Ｂ
１ちｐ１５以上とする。これに固形燃料への含浸効果を
高めるために必要に応じて少量の界面活性剤を添加する
ことによって目的とする助燃剤ヲ得ることができる。An iron complex ion forming substance, for example citric acid, is added to the iron salt aqueous solution to form iron complex ions, and then NaOH, NH
Area B that is stable against corrosion by adding a neutralizing agent such as 4OH
1 p15 or more. The desired combustion improver can be obtained by adding a small amount of surfactant as necessary to enhance the effect of impregnating the solid fuel.
上記助燃剤を石炭、コークスなどに含浸、混合すること
によル、助燃剤を使用しない場合と比べて、未燃分は牛
減し、助燃用の燃料の使用′Ｍｔ−低減させることがで
き、同時に電気業じん機による集じん効率を助燃剤無添
加に比し著しく向上させることができた。By impregnating and mixing the above combustion improver with coal, coke, etc., the amount of unburned matter can be reduced and the use of fuel for combustion support can be reduced compared to when no combustion improver is used. At the same time, the dust collection efficiency of the electric industrial dust machine was significantly improved compared to the case without the addition of combustion improver.
鉄の錯イオン形成剤としてクエン醸のほか酒石酸、醋酸
ンーダ、蓚酸、トリエタノールアミン、エチレンジアミ
ン四醋酸などがあるが、水酸化鉄沈殿の抑止効果はクエ
ン酸が最も優れている。In addition to citric acid, other iron complex ion forming agents include tartaric acid, acetic acid, oxalic acid, triethanolamine, and ethylenediaminetetraacetic acid, but citric acid is the most effective in inhibiting iron hydroxide precipitation.
界面活性剤は固体燃料への助燃剤の含浸効果を上けるた
めに使用するものであシ、アニオン系が好ましく、助燃
剤中にｌ ｗｊ％以下で十分な効果が得られるが、水に
対して湿潤性の良好な燃料では必らすしも必要としない
。The surfactant is used to improve the effect of impregnating the combustion improver into the solid fuel, and an anionic surfactant is preferable. This is not necessary for fuels with good wettability.
水酸化鉄の沈殿生成を防止し鉄錯イオンとするに必要な
りエン酸量は中和剤の種類によって異なｊ） ＮａＯＨ
では鉄イオンと等モルＮＨ４ＯＨで位鉄イオンの０．３
モル以上であれば十分であるが、その他の錯イオン形成
はいずれも等モル以上を必要とする。The amount of enoic acid required to prevent precipitation of iron hydroxide and convert it into iron complex ions varies depending on the type of neutralizing agentj) NaOH
Then, the iron ion and equimolar NH4OH are 0.3 of the iron ion.
A molar or more amount is sufficient, but formation of other complex ions requires an equimolar or more amount.
本発明の実皓例を図面を参即して説明する。゛実施例１ 第１囚は石油コークスボイラの概念図である。 A practical example of the present invention will be described with reference to the drawings.゛Example 1 The first picture is a conceptual diagram of a petroleum coke boiler.
原料ホッパｌに投入されたコークスは粉砕機２で２００
メンシュアンタ９５％に粉砕され、プロワ３で供給され
る空気で搬送されボイラ４内に注入される。また、助燃
用の１油またはカスはそれぞれ５及び６より供糺され、
炉内で二一カスと混合燃焼する。The coke put into raw material hopper L is crushed by crusher 2 to 200
It is pulverized to 95% menshuanta, transported by air supplied by blower 3, and injected into boiler 4. In addition, 1 oil or scum for auxiliary combustion is provided from 5 and 6, respectively.
Mixed with 21 dregs and burned in the furnace.
本実験では次の条件で試験した。This experiment was conducted under the following conditions.
Ｏ蒸発ｉ １５ ｔ／ｈ、エコノマイザ出口０２４％
０ 燃料 コークス５ ｔ／ｈ、助燃用ガス（Ｈ２゜Ｃ
ｏ、ＣＨ４よシなるカス）２，１００Ｎ加 ／ｈＯ助燃
剤は供給槽７に貯え、ポンプにてコークス粉に対して重
量比でＦｅ２Ｏ３として１１００ｐｐの割合で定爲°供
給した。O evaporation i 15 t/h, economizer outlet 0 24% 0 Fuel coke 5 t/h, auxiliary combustion gas (H2°C
The combustion improver was stored in the supply tank 7 and was supplied at a constant rate of 1100 pp as Fe2O3 by weight to the coke powder using a pump.
テスト結果は、表１に示したように助燃剤無添加の場合
、未燃分が１２．７１／Ｎｍ であるのに対し、助燃
剤を添加したものはいずれも未燃分５９／Ｎｒｎ 以下
と大巾に低減することができた。また、界面活性剤を１
％添加したものは、よｐ良好な未燃分減少効果がみられ
た。As shown in Table 1, the test results show that when no combustion improver is added, the unburned content is 12.71/Nm, while in all cases where a combustion improver is added, the unburned content is 59/Nrn or less. We were able to reduce it to a large extent. In addition, 1 surfactant
% added had a very good effect of reducing unburned matter.
さらに助燃剤を添加したものは、いずれも無添加のもの
と比べて、電気業じん機による集じん効率が向上する結
果を得た。Furthermore, the results showed that the dust collection efficiency of electric industrial dust machines with the addition of a combustion improver was improved compared to those without additives.
表１ テスト結果
督ポリオキシエチレンノニルフェノールエーテルスルホ
ネート
実施例２
予め（ｉｉＩｔ酸第２鉄１０％水溶液に対し同液中のＦ
θ 含有量の３等量のクエン酸ｔ−添加し、ＮＨ４ＯＨ
水でｐＨ６に中和した助燃剤水溶液を石油コークス微粉
に任意の割合で添加し、過剰０２４％で燃焼させた結果
を第２図に示した。これによるとＦｅ２Ｏ３として＋
００ ｐｐＨ添加することにより排ガス中の未燃カーボ
ン量は％に減少し、助燃剤添加により明らかに燃焼促進
効果を示したが添加量を増しても減少率は余り変らない
。Table 1 Test results: Polyoxyethylene nonylphenol ether sulfonate Example 2
θ content of 3 equivalents of citric acid t-added, NH4OH
A combustion improver aqueous solution neutralized to pH 6 with water was added to petroleum coke fine powder at an arbitrary ratio and burned at an excess of 0.24%. The results are shown in FIG. According to this, as Fe2O3 +
By adding 00 ppH, the amount of unburned carbon in the exhaust gas was reduced to %, and the addition of the combustion improver clearly showed a combustion promoting effect, but even if the amount added was increased, the reduction rate did not change much.
実施例３
実施例１と同様手法で調合した助燃剤水溶液を石炭微粉
に対しＦ６２０ ｓとして＋ ００ ［）ｍ添加して燃
焼した結果を第５図に示した。これによると無添加の場
合でも過ｆ！１Ｉ０２ 量の増加で燃焼灰中の未燃カー
ボン量は減少するが、助燃剤水溶液を添加したものは過
剰０２ｉｔの如伺に拘らず未燃カーボン量は無添加のも
のと比べてｈに減少した。Example 3 A combustion improver aqueous solution prepared in the same manner as in Example 1 was added to fine coal powder in an amount of +00 [)m as F620 s, and the result was shown in FIG. 5. According to this, even in the case of no additives! The amount of unburned carbon in the combustion ash decreases as the amount of 1I02 increases, but the amount of unburned carbon in the ash with the addition of a combustion improver aqueous solution was reduced to h compared to the one without addition, regardless of the excess 02it. .
本発明は以上詳記したように石炭、コークスなどの固体
燃料の助燃剤として鉄・塩水浴液を使用するに際し、実
用化の阻害要因となっていた材料腐食の問題を解決する
手段として、クエン酸などの鉄錯イオン形成剤を添加、
中和することによって助燃剤としての機能を損なうこと
なく、併せて集じん効率を向上させ得るもので、本発明
によって、鉄塩水溶液を助燃剤として実用化せしめたも
ので産業上極めて有効な新規な技術を提供するものであ
る。As described in detail above, the present invention is a method for solving the problem of material corrosion, which has been an impediment to practical application when iron and salt water bath liquid is used as a combustion improver for solid fuels such as coal and coke. Adding iron complex ion forming agents such as acids,
By neutralizing it, it is possible to improve the dust collection efficiency without impairing its function as a combustion improver, and the present invention has put iron salt aqueous solution into practical use as a combustion improver, making it a novel and extremely effective industrially. This technology provides advanced technology.
第１図は、本発明の効！Ｊ１！−確認するために使用し
た助燃剤テスト装置の概念図、第２図及び第３図は本発
明の実施例による効！Ｊを立証するグラフである。
復代理人 内 １） 明
復代理人 萩 原 亮 −
復代理人 安 西 篤 夫
旧トガス中未燃カーポジ置比
０）Ｏ”１
ミ曝Figure 1 shows the effects of the present invention! J1! -The conceptual diagram of the combustion improver test device used to confirm the effectiveness of the embodiment of the present invention is shown in FIGS. 2 and 3. This is a graph proving J. Sub-agents 1) Meifuku agent Ryo Hagiwara − Sub-agent Atsushi Anzai Former Togas unburnt carposi position ratio 0) O”1 Mia exposure
Claims (1)
のち、中性付近まで中和して得られる助燃剤を固体燃料
に含浸または混合したのち燃焼させることを特徴とする
固体燃料の燃焼方法。1. Combustion of solid fuel characterized by adding an iron complex ion-forming substance to an aqueous iron salt solution and then neutralizing it to near neutrality, impregnating or mixing the solid fuel with a combustion improver and then burning it. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61031846A JPH0699698B2 (en) | 1986-02-18 | 1986-02-18 | Solid fuel combustion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61031846A JPH0699698B2 (en) | 1986-02-18 | 1986-02-18 | Solid fuel combustion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62190289A true JPS62190289A (en) | 1987-08-20 |
| JPH0699698B2 JPH0699698B2 (en) | 1994-12-07 |
Family
ID=12342417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61031846A Expired - Lifetime JPH0699698B2 (en) | 1986-02-18 | 1986-02-18 | Solid fuel combustion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0699698B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010059297A (en) * | 2008-09-03 | 2010-03-18 | Taihokohzai:Kk | Particulate matter-coarsening agent to be added to coal, and coarsening method |
| US8845767B2 (en) | 2009-02-16 | 2014-09-30 | Innospec Limited | Methods of treating coal to improve combustion and reduce carbon content of fly ash |
| CN111518600A (en) * | 2019-12-23 | 2020-08-11 | 新疆中宇金盾碳基研究院(有限公司) | Saltpetering inhibitor, semi-coke type carbon containing saltpetering inhibitor and preparation method thereof |
| CN113845955A (en) * | 2021-09-26 | 2021-12-28 | 云南科兴环保科技有限公司 | Blast furnace coal powder combustion improver and preparation method and application thereof |
-
1986
- 1986-02-18 JP JP61031846A patent/JPH0699698B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010059297A (en) * | 2008-09-03 | 2010-03-18 | Taihokohzai:Kk | Particulate matter-coarsening agent to be added to coal, and coarsening method |
| US8845767B2 (en) | 2009-02-16 | 2014-09-30 | Innospec Limited | Methods of treating coal to improve combustion and reduce carbon content of fly ash |
| CN111518600A (en) * | 2019-12-23 | 2020-08-11 | 新疆中宇金盾碳基研究院(有限公司) | Saltpetering inhibitor, semi-coke type carbon containing saltpetering inhibitor and preparation method thereof |
| CN111518600B (en) * | 2019-12-23 | 2021-05-18 | 新疆中宇金盾碳基研究院(有限公司) | Saltpetering inhibitor, semi-coke type carbon containing saltpetering inhibitor and preparation method thereof |
| CN113845955A (en) * | 2021-09-26 | 2021-12-28 | 云南科兴环保科技有限公司 | Blast furnace coal powder combustion improver and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0699698B2 (en) | 1994-12-07 |
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