JPH0989228A - Incineration method - Google Patents
Incineration methodInfo
- Publication number
- JPH0989228A JPH0989228A JP7242128A JP24212895A JPH0989228A JP H0989228 A JPH0989228 A JP H0989228A JP 7242128 A JP7242128 A JP 7242128A JP 24212895 A JP24212895 A JP 24212895A JP H0989228 A JPH0989228 A JP H0989228A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- total
- less
- amount
- iron oxide
- 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
- 238000000034 method Methods 0.000 title claims description 32
- 239000002245 particle Substances 0.000 claims abstract description 191
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 150
- 238000002485 combustion reaction Methods 0.000 claims abstract description 49
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 47
- 239000000057 synthetic resin Substances 0.000 claims abstract description 47
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 41
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000011734 sodium Substances 0.000 claims abstract description 41
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 41
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 41
- 239000011593 sulfur Substances 0.000 claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 37
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 38
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 14
- 229910052598 goethite Inorganic materials 0.000 claims description 10
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 239000002956 ash Substances 0.000 abstract description 17
- 239000001301 oxygen Substances 0.000 abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 16
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003818 cinder Substances 0.000 abstract 1
- 239000000383 hazardous chemical Substances 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 24
- 239000007789 gas Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 13
- 239000002699 waste material Substances 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 230000003197 catalytic effect Effects 0.000 description 8
- -1 polyethylene Polymers 0.000 description 8
- 229910052595 hematite Inorganic materials 0.000 description 7
- 239000011019 hematite Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 229920001684 low density polyethylene Polymers 0.000 description 6
- 239000004702 low-density polyethylene Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 229960004887 ferric hydroxide Drugs 0.000 description 5
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003776 cleavage reaction Methods 0.000 description 3
- 239000010849 combustible waste Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000006356 dehydrogenation reaction Methods 0.000 description 3
- 238000010828 elution Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- 229910015189 FeOx Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 241000854711 Shinkai Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- IUHFWCGCSVTMPG-UHFFFAOYSA-N [C].[C] Chemical group [C].[C] IUHFWCGCSVTMPG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- YQCIWBXEVYWRCW-UHFFFAOYSA-N methane;sulfane Chemical group C.S YQCIWBXEVYWRCW-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910006540 α-FeOOH Inorganic materials 0.000 description 1
- 229910006299 γ-FeOOH Inorganic materials 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合成樹脂を含む被焼却
物を完全燃焼させることができ、また、燃焼時に発生す
る一酸化炭素ガス濃度、窒素酸化物濃度と未燃焼炭素分
を減少させることが可能な焼却方法に関するものであ
る。INDUSTRIAL APPLICABILITY The present invention is capable of completely burning an incineration object containing a synthetic resin, and reduces carbon monoxide gas concentration, nitrogen oxide concentration and unburned carbon content generated during combustion. It relates to a possible incineration method.
【０００２】[0002]
【従来の技術】近年生活様式の変化や生活水準、所得水
準の向上等により、新しい商品があふれ、豊かな物質文
化が形成されたが、それにともない工場や家庭から排出
される産業廃棄物、ゴミの量が急増しており、これらの
処理にかんする問題は大きな社会問題ともなってきてい
る。2. Description of the Related Art In recent years, due to changes in lifestyles, improvements in living standards and income levels, new products have overflowed and a rich material culture has been formed. Along with this, industrial waste and garbage discharged from factories and households. The amount of wastewater is rapidly increasing, and the problems associated with these treatments are becoming major social problems.
【０００３】とりわけ、合成樹脂はその優れた機械的、
物理的性質及び成形性から現代社会においては欠くこと
のできない材料としてあらゆる分野で膨大な量が使用さ
れており、それに伴ってその廃棄物の総量も年間数百万
トン以上にものぼっている。したがって、合成樹脂廃棄
物の処理は産業廃棄物、ゴミ処理に関する問題の中でも
特に重要な課題となってきている。また、合成樹脂の多
くが石油を原材料として製造したものであることから合
成樹脂廃棄物を再利用することやエネルギー源として有
効利用することが強く求められている。Above all, synthetic resins are excellent in mechanical properties,
Due to its physical properties and moldability, a huge amount is used in all fields as a material indispensable in modern society, and the total amount of waste is also in excess of several million tons per year. Therefore, the treatment of synthetic resin waste has become a particularly important issue among the problems relating to industrial waste and waste treatment. Further, since most synthetic resins are produced from petroleum as a raw material, there is a strong demand for recycling synthetic resin wastes and effectively using them as energy sources.
【０００４】合成樹脂を含む可燃ゴミの焼却処分に関し
ては、従来から燃焼中に発生する一酸化炭素や窒素酸化
物による大気汚染や焼却後に多量に発生する残灰や燃え
残りを処分する埋め立て地等の不足、残灰中の有害成分
の埋め立て地での漏洩、あるいは有毒なダイオキシンの
生成等の問題に加えて、可燃ゴミ中に燃焼カロリーの高
い合成樹脂廃棄物が多量に含まれている場合には、焼却
炉の炉内温度の上昇の原因となって焼却炉を破損し易い
という問題があった。Regarding the incineration disposal of combustible waste containing synthetic resin, air pollution due to carbon monoxide and nitrogen oxides generated during combustion, landfills for disposal of large amounts of residual ash and unburned residue generated after incineration, etc. In addition to problems such as shortage of waste, leakage of harmful components in residual ash at landfill, generation of toxic dioxin, etc., when combustible waste contains a large amount of synthetic resin waste with high burning calories Has a problem that the incinerator is liable to be damaged due to an increase in the temperature inside the incinerator.
【０００５】このような問題を解決するための方法とし
て、例えば低酸素濃度下で燃焼させて窒素酸化物量を抑
制する方法、水を散布しながら燃焼するなどして炉内を
一定温度以下にコントロールし焼却炉の破損を防止する
方法、有害物質を含んでいる残灰を不溶化処理し、さら
にセメント固化してから埋め立て処分する方法等が提案
されている。更に、可燃ゴミと一緒に焼却処分されるプ
ラスチック製ゴミ袋についても、最近、従来のゴミ袋に
代えてポリエチレンに炭酸カルシウムを大量に含有させ
た半透明のゴミ袋を義務づけてゴミの減量化と燃焼カロ
リーの低下を図る自治体もでてきている。As a method for solving such a problem, for example, a method of controlling the amount of nitrogen oxides by burning under a low oxygen concentration, a method of burning while spraying water, or the like to control the temperature inside the furnace below a certain temperature There have been proposed methods for preventing damage to the slag incinerator, methods for insolubilizing residual ash containing harmful substances, further solidifying cement, and then landfilling. Furthermore, regarding plastic waste bags that are incinerated together with combustible waste, recently, instead of conventional waste bags, it has become obligatory to use semi-transparent waste bags that contain a large amount of calcium carbonate in polyethylene, thus reducing waste. Some local governments are trying to reduce the calories they burn.
【０００６】[0006]
【発明が解決しようとする課題】上述した理由によって
合成樹脂廃棄物は、従来、焼却処分されるよりもむしろ
埋め立て処分にまわされるのが通例であったが、合成樹
脂からなる各種物品が石油を原材料として製造されたも
のであることから、その使用後には焼却処分して焼却時
に発生する熱をエネルギー源として有効利用することが
現在各方面から強く要望されているところである。した
がって、合成樹脂廃棄物を含む被焼却物を焼却するに当
たっては、燃焼時に発生する一酸化炭素や窒素酸化物量
の抑制、焼却炉の破損の防止と燃え残りや残灰の量をで
きるだけ少なくする技術を提供することが当面最も必要
とされていることであるが、前出公知の方法ではこれら
の要求を十分満足するものとはいえないものであった。For the above-mentioned reasons, synthetic resin wastes have conventionally been normally disposed of in landfill rather than incinerated. However, various articles made of synthetic resin contain petroleum. Since it is manufactured as a raw material, there is a strong demand from various parties at present to incinerate it after use and effectively use the heat generated during incineration as an energy source. Therefore, when incinerating materials to be incinerated, including synthetic resin waste, technology to reduce the amount of carbon monoxide and nitrogen oxides generated during combustion, prevent damage to the incinerator, and reduce the amount of unburned residue and residual ash as much as possible However, the above-mentioned known methods have not been able to sufficiently satisfy these requirements.
【０００７】すなわち、低温、低酸素濃度条件下で焼却
すれば燃焼時に発生する窒素酸化物量の抑制と焼却炉の
破損防止には有効であるが燃焼速度の低下や不完全燃焼
による焼却後の残灰や燃え残りが更に増加するという問
題があった。また、炭酸カルシウムを大量にポリエチレ
ン樹脂に含有させた半透明のゴミ袋は、焼却時の焼却炉
内の温度上昇は少なくなるが、焼却後の残灰量が炭酸カ
ルシウム相当量増加するという問題があった。That is, if incinerated under low temperature and low oxygen concentration conditions, it is effective for suppressing the amount of nitrogen oxides generated during combustion and preventing damage to the incinerator, but the residue after incineration due to a decrease in the burning rate or incomplete combustion. There was a problem that ash and unburned residue would increase further. In addition, a semi-transparent garbage bag containing a large amount of calcium carbonate in a polyethylene resin reduces the temperature rise in the incinerator at the time of incineration, but the amount of residual ash after incineration increases by an amount equivalent to calcium carbonate. there were.
【０００８】そこで、本発明は、合成樹脂廃棄物を含む
被焼却物を焼却処分する際に、低温、低酸素濃度条件下
においても燃焼速度を維持することができ、また、燃焼
時に発生する一酸化炭素や窒素酸化物量を抑制し、焼却
後の残灰や有害物をできるだけ少なくすることができる
焼却方法を提供することを技術的課題とする。Therefore, according to the present invention, when incinerating an incineration object containing a synthetic resin waste, it is possible to maintain a burning rate even under low temperature and low oxygen concentration conditions, and also to generate at the time of burning. It is a technical object to provide an incineration method capable of suppressing the amount of carbon oxides and nitrogen oxides and minimizing the residual ash and harmful substances after incineration.
【０００９】[0009]
【課題を解決するための手段】前記技術的課題は、次の
通りの本発明によって解決できる。すなわち、本発明は
焼却炉で合成樹脂を含む被焼却物を燃焼させる方法に
おいて、焼却炉内で単位時間に燃焼される被焼却物１０
０重量部に対して、全硫黄量が０．８ｗｔ％以下及び全
ナトリウム量が０．５ｗｔ％以下であって全硫黄量と全
ナトリウム量の合計量が１．０ｗｔ％以下である含水酸
化第二鉄粒子又は酸化鉄粒子もしくは当該粒子の混合物
を単位時間当たり０．１〜２５重量部燃焼炉内に共存さ
せて燃焼させることを特徴とする焼却方法、 含水酸化第二鉄粒子又は酸化鉄粒子もしくは当該粒子
の混合物を合成樹脂組成物、粉体、スラリーの少なくと
も一つからなる態様で焼却炉内に投入して燃焼させるこ
とを特徴とするの焼却方法、 全硫黄量が０．２ｗｔ％以下及び全ナトリウム量が
０．５ｗｔ％以下である紡錘状ゲータイト粒子を使用す
ることを特徴とするの焼却方法、 全硫黄量が０．８ｗｔ％以下及び全ナトリウム量が
０．５ｗｔ％以下であって全硫黄量と全ナトリウム量の
合計量が１．０ｗｔ％以下である粒状マグネタイト粒子
を使用することを特徴とするの焼却方法である。The above technical problems can be solved by the present invention as follows. That is, the present invention is a method of burning an incineration object containing a synthetic resin in an incinerator, in which the incineration object 10 is burned in a unit time in the incinerator.
0% by weight, the total amount of sulfur is 0.8 wt% or less, the total amount of sodium is 0.5 wt% or less, and the total amount of total sulfur and total sodium is 1.0 wt% or less. An incineration method, wherein 0.1 to 25 parts by weight of ferric oxide particles or iron oxide particles or a mixture of the particles are coexisted in a combustion furnace and burned, ferric oxide hydroxide particles or iron oxide particles Alternatively, the incineration method is characterized in that the mixture of the particles is put into an incinerator and burned in a form of at least one of a synthetic resin composition, a powder, and a slurry, and the total amount of sulfur is 0.2 wt% or less. And an incineration method comprising using spindle-shaped goethite particles having a total sodium content of 0.5 wt% or less, a total sulfur content of 0.8 wt% or less and a total sodium content of 0.5 wt% or less. Total sulfur It is incineration method to characterized in that the total amount of the amount and the total amount of sodium to use granular magnetite particles is less than 1.0 wt%.
【００１０】すなわち、合成樹脂を含む被焼却物を燃焼
させる際に不純物としての全硫黄量及び／又は全ナトリ
ウム量が一定量以下の含水酸化第二鉄粒子又は酸化鉄粒
子もしくは当該粒子の混合物を焼却炉中に共存させるこ
とにより、含水酸化第二鉄粒子又は酸化鉄粒子の燃焼触
媒機能を効果的に発揮させることができることによっ
て、焼却炉内で可燃ゴミや合成樹脂を完全燃焼させるこ
とが可能となり、その結果、残灰や燃え残りの減少、排
ガス中の一酸化炭素や窒素酸化物量の抑制を図ることが
できることを見いだし本発明に到達した。That is, when burning an incineration product containing a synthetic resin, ferric hydroxide particles or iron oxide particles or a mixture of the particles having a total sulfur content and / or a total sodium content as impurities which are equal to or less than a certain amount are used. By coexisting in the incinerator, the combustion catalytic function of ferric oxide hydroxide particles or iron oxide particles can be effectively exerted, so that combustible dust and synthetic resin can be completely burned in the incinerator. As a result, they have found that it is possible to reduce the amount of residual ash and unburned residue and to suppress the amounts of carbon monoxide and nitrogen oxides in exhaust gas, and reached the present invention.
【００１１】次に本発明の実施にあたっての諸条件につ
いて述べる。本発明においては全硫黄量が０．８ｗｔ％
以下及び全ナトリウム量が０．５ｗｔ％以下であって、
全硫黄量と全ナトリウム量の合計量が１．０ｗｔ％以下
の含水酸化第二鉄粒子及び／又は酸化鉄粒子を使用する
必要がある。含水酸化第二鉄粒子又は酸化鉄粒子は、一
般に鉄原料である硫酸鉄に由来する硫黄分やアルカリ性
水溶液原料である水酸化ナトリウムに由来するナトリウ
ム分を不純物として多量に含有している。本発明の用途
に使用するためには、含水酸化第二鉄粒子の場合は水
洗、酸化鉄粒子の場合にはその製造段階における水洗及
び熱処理段階での不純物の可溶化と再水洗等により不純
物を減少させる必要があるが、経済的及び技術的な制約
により、全硫黄量、全ナトリウム量の下限値はそれぞれ
０．００５ｗｔ％である。この不純物の量が多いと含水
酸化第二鉄粒子及び／又は酸化鉄粒子の燃焼触媒活性が
小さくなって本発明の目的とする燃焼特性を付与する効
果が少ないので好ましくない。これは、含水酸化第二鉄
粒子及び／又は酸化鉄粒子粉末の不純物のうちの全硫黄
量と全ナトリウム量が粒子と合成樹脂との接触界面の面
積及び面積当たりの燃焼触媒活性の大小を左右する重要
な要因であることに起因するものと推測される。なお、
全硫黄量は、（株）堀場製作所製 炭素−硫黄分析計
ＥＭＩＡ−２２００型で測定した値であり、全ナトリウ
ム量は、セイコー電子工業（株）製 誘導結合プラズマ
原子発光分光光度計 ＳＰＳ−４０００型で測定した値
である。Next, various conditions for carrying out the present invention will be described. In the present invention, the total amount of sulfur is 0.8 wt%
And the total amount of sodium is 0.5 wt% or less,
It is necessary to use ferric oxide hydroxide particles and / or iron oxide particles in which the total amount of total sulfur and total sodium is 1.0 wt% or less. Ferric hydrated iron oxide particles or iron oxide particles generally contain a large amount of a sulfur component derived from iron sulfate, which is an iron raw material, and a sodium component derived from sodium hydroxide, which is an alkaline aqueous solution raw material, as impurities. For use in the application of the present invention, in the case of hydrous ferric oxide particles washed with water, in the case of iron oxide particles washed with water in the production stage and impurities by solubilization and rewashing of impurities in the heat treatment stage, etc. Although it is necessary to reduce the total amount, the lower limits of the total amount of sulfur and the total amount of sodium are 0.005 wt% respectively due to economic and technical restrictions. If the amount of the impurities is large, the combustion catalyst activity of the ferric oxide hydroxide particles and / or the iron oxide particles becomes small and the effect of imparting the combustion characteristics aimed at by the present invention is small, which is not preferable. This is because the total amount of sulfur and the total amount of sodium in the impurities of ferric oxide hydroxide particles and / or iron oxide particles determine the area of the contact interface between the particles and the synthetic resin and the magnitude of the combustion catalyst activity per area. It is speculated that this is due to an important factor that In addition,
The total amount of sulfur is a carbon-sulfur analyzer manufactured by HORIBA, Ltd.
The total amount of sodium is a value measured with an EMIA-2200 model, and is a value measured with an inductively coupled plasma atomic emission spectrophotometer SPS-4000 model manufactured by Seiko Denshi Kogyo Co., Ltd.
【００１２】更に、本発明においては含水酸化第二鉄粒
子及び／又は酸化鉄粒子の粒度分布が６０％以下である
ことが好ましい。この粒度分布は、上述の合成樹脂中に
練り込んだ場合に樹脂中に分散した粒子の充填構造を通
して、燃焼性に影響する。ここでいう粒度分布とは、透
過型電子顕微鏡により得られた１万倍の写真を４倍に拡
大した写真で、ランダムに２５０個の粒子を選んで紡錘
状と針状は長軸径、板状と粒状はフェレー径を実測し
て、その径と個数から個数分布を出し、分布の標準偏差
σを平均値Ｍで除した値に１００を乗じて％で表したも
のである。Further, in the present invention, the particle size distribution of the ferric oxide hydroxide particles and / or the iron oxide particles is preferably 60% or less. This particle size distribution affects the flammability through the packed structure of particles dispersed in the resin when kneaded in the above-mentioned synthetic resin. The particle size distribution referred to here is a photograph obtained by magnifying 10,000 times obtained with a transmission electron microscope, and magnified 4 times. 250 particles are randomly selected to have spindle-shaped and needle-shaped major axis diameters and plates. The shape and the granularity are obtained by actually measuring the Feret's diameter, obtaining the number distribution from the diameter and the number, dividing the standard deviation σ of the distribution by the average value M, and multiplying the value by 100 to express it.
【００１３】更に、含水酸化第二鉄粒子及び／又は酸化
鉄粒子の粒子形状、平均粒子径、軸比、ＢＥＴ比表面積
は、合成樹脂と含水酸化第二鉄粒子及び／又は酸化鉄粒
子の接触界面の面積の大小を通して燃焼触媒活性を規定
する要因として作用する。Further, the particle shape, average particle size, axial ratio and BET specific surface area of the ferric hydroxide-containing particles and / or iron oxide particles are determined by the contact between the synthetic resin and the ferric hydroxide-containing particles and / or iron oxide particles. It acts as a factor that regulates the combustion catalyst activity through the size of the interface area.
【００１４】本発明における含水酸化第二鉄粒子として
は、ゲータイト（α−ＦｅＯＯＨ）粒子、レピッドクロ
サイト（γ−ＦｅＯＯＨ）粒子、δ−ＦｅＯＯＨ粒子の
いずれをも使用することができ、粒子形状は紡錘状（笹
の葉状）、針状、板状等のいずれであってもよいが紡錘
状の含水酸化第二鉄粒子が燃焼効率の点で好ましく、特
に紡錘状のゲータイト粒子が最も好ましい。紡錘状含水
酸化第二鉄粒子は、電子顕微鏡観察によれば、超微細繊
維が多数束ねられた外観を呈した粒子であり、長軸径が
０．０５〜１．５μｍ、軸比（長軸径／短軸径 −以下
同じである。）が１〜１８であって、ＢＥＴ比表面積が
３０〜２５０m2/gである。これらの中で全硫黄量が０．
２ｗｔ％以下、全ナトリウム量が０．５ｗｔ％以下であ
り、粒度分布が５０％以下であることが好ましい。更
に、燃焼効率を考慮すれば、全硫黄量が０．０８ｗｔ％
以下、全ナトリウム量が０．３ｗｔ％以下であって、粒
度分布が４０％以下、長軸径が０．１〜０．５μｍ、軸
比が３〜１５、ＢＥＴ比表面積が５０m2/g以上であるこ
とが好ましい。As the ferric oxide hydroxide particles in the present invention, any of goethite (α-FeOOH) particles, rapid crosite (γ-FeOOH) particles and δ-FeOOH particles can be used, and the particle shape is May be spindle-shaped (bamboo leaf-shaped), needle-shaped, plate-shaped, etc., but spindle-shaped ferric oxide hydroxide particles are preferable in terms of combustion efficiency, and particularly spindle-shaped goethite particles are most preferable. According to electron microscope observation, the spindle-shaped ferric oxide hydroxide particles are particles that have the appearance of being bundled with a large number of ultrafine fibers, and have a major axis diameter of 0.05 to 1.5 μm and an axial ratio (long axis). Diameter / minor axis diameter-the same applies hereinafter) is 1 to 18 and the BET specific surface area is 30 to 250 m 2 / g. Of these, the total sulfur content was 0.
It is preferable that the content is 2 wt% or less, the total sodium content is 0.5 wt% or less, and the particle size distribution is 50% or less. Furthermore, considering the combustion efficiency, the total sulfur content is 0.08 wt%
The total sodium content is 0.3 wt% or less, the particle size distribution is 40% or less, the major axis diameter is 0.1 to 0.5 μm, the axial ratio is 3 to 15, and the BET specific surface area is 50 m 2 / g or more. Is preferred.
【００１５】針状含水酸化第二鉄粒子は針状形態の粒子
はもちろん針状粒子のところどころから樹枝が出ている
外観を呈した粒子も含んでおり、長軸径が０．０５〜
２．０μｍ、軸比が２〜２０であって、ＢＥＴ比表面積
が１０〜２００m2/gである。これらの中で全硫黄量が
０．１ｗｔ％以下、全ナトリウム量が０．５ｗｔ％以下
であり、粒度分布が６０％以下であることが好ましい。
燃焼効率を考慮すれば、全硫黄量が０．０５ｗｔ％以
下、全ナトリウム量が０．３ｗｔ％以下であって、粒度
分布が５０％以下、長軸径が０．１〜０．８μｍ、軸比
が５〜１５、ＢＥＴ比表面積が１５〜１００m2/gである
ことが好ましい。The acicular hydrous iron oxide particles include not only acicular particles but also particles having an appearance in which dendrites appear at some places of acicular particles, and the major axis diameter is 0.05 to.
The BET specific surface area is 10 to 200 m 2 / g. Of these, the total sulfur content is preferably 0.1 wt% or less, the total sodium content is 0.5 wt% or less, and the particle size distribution is preferably 60% or less.
Considering the combustion efficiency, the total sulfur amount is 0.05 wt% or less, the total sodium amount is 0.3 wt% or less, the particle size distribution is 50% or less, the major axis diameter is 0.1 to 0.8 μm, and the axis is It is preferable that the ratio is 5 to 15 and the BET specific surface area is 15 to 100 m 2 / g.
【００１６】板状含水酸化第二鉄粒子は、電子顕微鏡観
察によれば、六角板状ないし円板状の外観を呈した粒子
であり、板面径が０．０２〜１．５μｍ、板状比（板面
径／厚み −以下同じである。）が３〜１５程度であ
る。これらの中で全硫黄量が０．１ｗｔ％以下、全ナト
リウム量が０．１ｗｔ％以下であり、粒度分布が５０％
以下であることが好ましい。燃焼効率を考慮すれば、全
硫黄量が０．０５ｗｔ％以下、全ナトリウム量が０．０
５ｗｔ％以下であって、粒度分布が４０％以下、板面径
が０．０３〜０．５μｍ、板状比が５〜１０であること
が好ましい。The plate-shaped ferric oxide hydroxide particles are particles having a hexagonal plate-like or disk-like appearance as observed by an electron microscope, and have a plate surface diameter of 0.02 to 1.5 μm. The ratio (plate surface diameter / thickness-same below) is about 3 to 15. Of these, the total sulfur content is 0.1 wt% or less, the total sodium content is 0.1 wt% or less, and the particle size distribution is 50%.
The following is preferred. Considering combustion efficiency, the total sulfur content is 0.05 wt% or less, and the total sodium content is 0.0
It is preferably 5 wt% or less, the particle size distribution is 40% or less, the plate surface diameter is 0.03 to 0.5 μm, and the plate ratio is 5 to 10.
【００１７】これら各種形状の含水酸化第二鉄粒子は、
第一鉄塩水溶液と水酸化アルカリ水溶液、炭酸アルカリ
水溶液等のアルカリ水溶液との中和反応沈殿物を含む懸
濁液中に添加剤の存在下又は不存在下で空気等の酸素含
有ガスを通気することによって水溶液中から生成させる
ことができる。These various shapes of ferric oxide hydroxide particles are
Neutralization reaction of ferrous salt aqueous solution with alkaline aqueous solution such as alkaline hydroxide aqueous solution and alkaline carbonate aqueous solution In the presence or absence of additives, oxygen-containing gas such as air is aerated in the suspension containing the precipitate. By doing so, it can be produced from an aqueous solution.
【００１８】本発明における酸化鉄粒子としてはヘマタ
イト（α−Ｆｅ2Ｏ3）粒子、マグネタイト（ＦｅＯx・
Ｆｅ2Ｏ3、０＜ｘ≦１）粒子は、マグヘマイト（γ−Ｆ
ｅ2Ｏ3）粒子のいずれをも使用することができ、粒子形
状は紡錘状、針状、板状そして球形、八面体、多面体、
不定形等のほぼ等方形状を呈するいわゆる粒状のいずれ
であってもよいが、粒状のマグネタイト粒子、紡錘状の
ヘマタイト粒子、紡錘状のマグヘマイト粒子が燃焼効率
の点で好ましく、それらの中でも粒状のマグネタイト粒
子が最も好ましい。The iron oxide particles used in the present invention include hematite (α-Fe 2 O 3 ) particles and magnetite (FeOx.
Fe 2 O 3 , 0 <x ≦ 1) particles are maghemite (γ-F)
e 2 O 3 ) particles can be used, and the particle shapes are spindle-shaped, needle-shaped, plate-shaped and spherical, octahedral, polyhedral,
Although it may be any of so-called granular particles exhibiting an isotropic shape such as an amorphous shape, granular magnetite particles, spindle-shaped hematite particles, spindle-shaped maghemite particles are preferable in terms of combustion efficiency, and among them, granular particles are preferable. Most preferred are magnetite particles.
【００１９】紡錘状酸化鉄粒子や針状酸化鉄粒子は、長
軸径が０．０３〜１．０μｍ、軸比が２〜１２であっ
て、ＢＥＴ比表面積が５〜２００m2/gである。これらの
中で全硫黄量が０．２ｗｔ％以下、全ナトリウム量が
０．５ｗｔ％以下であり、粒度分布が５０％以下である
ことが好ましい。燃焼効率を考慮すれば、全硫黄量が
０．１ｗｔ％以下、全ナトリウム量が０．３５ｗｔ％以
下であって、粒度分布が４５％以下、長軸径が０．０５
〜０．３μｍ、軸比が３〜１０、ＢＥＴ比表面積が２０
〜１００m2/gであることが好ましい。The spindle-shaped iron oxide particles and needle-shaped iron oxide particles have a major axis diameter of 0.03 to 1.0 μm, an axial ratio of 2 to 12, and a BET specific surface area of 5 to 200 m 2 / g. . Of these, the total sulfur content is preferably 0.2 wt% or less, the total sodium content is 0.5 wt% or less, and the particle size distribution is preferably 50% or less. Considering the combustion efficiency, the total sulfur amount is 0.1 wt% or less, the total sodium amount is 0.35 wt% or less, the particle size distribution is 45% or less, and the major axis diameter is 0.05.
~ 0.3 μm, axial ratio 3-10, BET specific surface area 20
It is preferably -100 m 2 / g.
【００２０】粒状酸化鉄粒子は、平均粒子径が０．０３
〜１．０μｍ、ＢＥＴ比表面積２〜３０m2/gである。こ
れらの中で全硫黄量が０．８ｗｔ％以下、全ナトリウム
量が０．５ｗｔ％以下であり、粒度分布が５０％以下で
あることが好ましい。燃焼効率を考慮すれば全硫黄量が
０．６ｗｔ％以下、全ナトリウム量が０．２５ｗｔ％以
下であって、粒度分布が４０％以下、平均粒子径が０．
０５〜０．５μｍ、ＢＥＴ比表面積が４m2/g以上である
ことが好ましい。The granular iron oxide particles have an average particle size of 0.03.
˜1.0 μm, BET specific surface area 2˜30 m 2 / g. Of these, the total sulfur content is preferably 0.8 wt% or less, the total sodium content is 0.5 wt% or less, and the particle size distribution is preferably 50% or less. Considering the combustion efficiency, the total sulfur amount is 0.6 wt% or less, the total sodium amount is 0.25 wt% or less, the particle size distribution is 40% or less, and the average particle size is 0.
It is preferable that the BET specific surface area is 05 to 0.5 μm and the BET specific surface area is 4 m 2 / g or more.
【００２１】紡錘状酸化鉄粒子や針状酸化鉄粒子は、前
述した水溶液から得られた紡錘状含水酸化第二鉄粒子や
針状含水酸化第二鉄粒子を空気中２５０〜７００℃で粒
子形状を保持しながら加熱して紡錘状ヘマタイト粒子や
針状ヘマタイト粒子とすることにより、次いで、これら
ヘマタイト粒子を水蒸気気流下等の還元性雰囲気中３０
０〜５００℃で粒子形状を保持しながら加熱して紡錘状
マグネタイト粒子や針状マグネタイト粒子とすることに
より、更に、これらマグネタイト粒子を空気中２００〜
５００℃で粒子形状を維持しながら酸化して紡錘状マグ
ヘマイト粒子や針状マグヘマイト粒子とすることによ
り、得ることができる。The spindle-shaped iron oxide particles and acicular iron oxide particles are obtained by subjecting the spindle-shaped ferric hydroxide-containing ferric oxide particles and acicular ferric hydroxide-containing particles obtained from the above-mentioned aqueous solution to a particle shape at 250 to 700 ° C. in air. By heating to maintain spindle-shaped hematite particles or needle-shaped hematite particles, the hematite particles are then heated in a reducing atmosphere such as under a steam flow.
By heating at 0 to 500 ° C. while maintaining the particle shape to form spindle-shaped magnetite particles or needle-shaped magnetite particles, the magnetite particles are further heated in air to 200-
It can be obtained by oxidizing at 500 ° C. while maintaining the particle shape to form spindle-shaped maghemite particles or needle-shaped maghemite particles.
【００２２】板状酸化鉄粒子は、第一鉄塩水溶液とアル
カリ水溶液との中和反応沈殿物をオートクレーブ中で加
熱して板状ヘマタイト粒子を生成することにより、該板
状ヘマタイト粒子を水蒸気気流下等の還元性雰囲気中３
００〜５００℃で粒子形状を維持しながら加熱して板状
マグネタイト粒子とすることにより、更に、板状マグネ
タイト粒子を空気中２００〜５００℃で粒子形状を維持
しながら酸化して板状マグヘマイト粒子とすることによ
り、得ることができる。The plate-like iron oxide particles are produced by heating a precipitate of a neutralization reaction of an aqueous ferrous salt solution and an alkaline solution in an autoclave to produce plate-like hematite particles. In a reducing atmosphere such as 3
By heating at a temperature of 0 to 500 ° C while maintaining the particle shape to form plate-shaped magnetite particles, the plate-shaped magnetite particles are further oxidized in air at 200 to 500 ° C while maintaining the particle shape to obtain plate-shaped maghemite particles. It can be obtained by
【００２３】粒状酸化鉄粒子は第一鉄塩水溶液と水酸化
アルカリ水溶液、炭酸アルカリ水溶液等のアルカリ水溶
液との中和反応沈澱物を含む懸濁液中に空気等の酸素含
有ガスを通気して粒状マグネタイト粒子を生成すること
により、該マグネタイト粒子を空気中２００〜５００℃
で粒子形状を維持しながら加熱して粒状マグヘマイト粒
子とすることにより、更に、該マグヘマイト粒子を５０
０〜９００℃で粒子形状を維持しながら加熱して粒状ヘ
マタイト粒子とすることにより、得ることができる。The granular iron oxide particles are obtained by aeration of an oxygen-containing gas such as air into a suspension containing a neutralization reaction precipitate of a ferrous salt aqueous solution and an alkaline aqueous solution such as an alkaline hydroxide aqueous solution and an alkaline carbonate aqueous solution. By generating granular magnetite particles, the magnetite particles are heated in air at 200 to 500 ° C.
The particles are heated while maintaining the particle shape to form granular maghemite particles.
It can be obtained by heating at 0 to 900 ° C. while maintaining the particle shape to form granular hematite particles.
【００２４】本発明の焼却方法においては、上述した含
水酸化第二鉄粒子及び酸化鉄粒子から選ばれた１種又は
２種以上を燃焼特性、経済性を考慮して適宜選択するこ
とが可能であり、焼却炉内で単位時間に燃焼される被焼
却物１００重量部に対して、含水酸化第二鉄粒子又は酸
化鉄粒子もしくは当該粒子の混合物を単位時間当たり
０．１〜２５重量部、好ましくは０．３〜１１重量部、
特に好ましくは０．５〜８．５重量部を燃焼炉内に共存
させて燃焼させる必要がある。なお、後述するように含
水酸化第二鉄粒子や酸化鉄粒子は燃焼炉内では複雑な反
応を起こして別の物質や粒子形状になる場合もあるが、
このように変化したものも含めて燃焼炉内に存在するこ
とも本発明でいう共存に含まれる。含水酸化第二鉄粒子
及び酸化鉄粒子もしくは当該粒子の混合物が単位時間当
たりに共存する量が０．１重量部未満の場合には、燃焼
特性を向上させる効果が不十分であり、逆に２５．０重
量部を超える場合には、焼却後の残灰が多くなるばかり
かコストアップともなるので好ましくない。In the incineration method of the present invention, one or more selected from the above-mentioned ferric oxide hydroxide particles and iron oxide particles can be appropriately selected in consideration of combustion characteristics and economy. Yes, 0.1 to 25 parts by weight, per unit time, of ferric oxide hydroxide particles or iron oxide particles or a mixture of the particles, relative to 100 parts by weight of the incineration material burned in the incinerator in a unit time, preferably Is 0.3 to 11 parts by weight,
Particularly preferably, 0.5 to 8.5 parts by weight must coexist in the combustion furnace for combustion. As described below, ferric oxide hydroxide particles and iron oxide particles may cause a complicated reaction in the combustion furnace to form another substance or particle shape,
Existence in the combustion furnace, including those modified in this way, is included in the coexistence of the present invention. When the amount of the ferric oxide hydroxide particles and the iron oxide particles or the mixture of the particles coexisting per unit time is less than 0.1 part by weight, the effect of improving the combustion characteristics is insufficient, and conversely 25 If it exceeds 0.0 part by weight, not only the residual ash after incineration increases but also the cost increases, which is not preferable.
【００２５】また、これらの含水酸化第二鉄粒子又は酸
化鉄粒子もしくは当該粒子の混合物を焼却炉中に共存さ
せる方法については特に制限はなく、例えば、焼却炉内
の気相中に粉体又はスラリー状態で噴霧添加したり、あ
らかじめ合成樹脂に含水酸化第二鉄粒子又は酸化鉄粒子
もしくは当該粒子の混合物を練り込んだ合成樹脂組成物
を焼却炉に投入する方法などが挙げられる。特に、焼却
炉内の気相中に粉体又はスラリー状態で直接噴霧添加し
た場合は燃焼触媒活性が最も発揮できるので好ましい。The method of coexisting these ferric oxide hydroxide particles or iron oxide particles or a mixture of the particles in an incinerator is not particularly limited, and for example, powder or powder in the gas phase in the incinerator can be used. Examples thereof include a method of spray addition in a slurry state and a method of charging a synthetic resin composition in which ferric oxide hydroxide particles or iron oxide particles or a mixture of the particles are kneaded in a synthetic resin in advance into an incinerator. In particular, direct spray addition in the form of powder or slurry to the gas phase in the incinerator is preferable because the combustion catalyst activity can be most exerted.
【００２６】合成樹脂組成物として焼却炉中に投入する
場合は、ポリエチレン、ポリプロピレン、塩化ビニル樹
脂、ポリエステル系樹脂、ポリスチレン、ナイロン、ポ
リウレタン、アクリル樹脂等の熱可塑性樹脂やフェノー
ル樹脂、尿素樹脂、エポキシ樹脂、不飽和ポリエステル
樹脂等の熱硬化性樹脂等の合成樹脂、好ましくは熱可塑
性樹脂、特に好ましくは低密度ポリエチレン、直鎖状低
密度ポリエチレン、高密度ポリエチレン、エチレン−酢
酸ビニル共重合体等で代表されるポリエチレン系樹脂や
ポリプロピレン等のポリオレフィン系樹脂等にあらかじ
め含水酸化第二鉄粒子又は酸化鉄粒子をミキシングロー
ル、バンバリーミキサー、ニーダー、二軸混練押出機等
を用いて混練したものを使用することができる。その際
含水酸化第二鉄粒子や酸化鉄粒子は、合成樹脂への分散
性を向上させる目的で、粒子表面を各種表面処理剤で表
面処理して使用することも可能である。When the synthetic resin composition is put into an incinerator, thermoplastic resin such as polyethylene, polypropylene, vinyl chloride resin, polyester resin, polystyrene, nylon, polyurethane, acrylic resin, phenol resin, urea resin, epoxy resin, etc. Resin, synthetic resin such as thermosetting resin such as unsaturated polyester resin, preferably thermoplastic resin, particularly preferably low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene-vinyl acetate copolymer, etc. Polyethylene resin or polyolefin resin such as polypropylene, which is representatively kneaded with hydrated ferric oxide particles or iron oxide particles using a mixing roll, a Banbury mixer, a kneader, a twin-screw kneading extruder, etc., is used. be able to. At that time, the ferric oxide hydroxide particles and the iron oxide particles can be used after being surface-treated with various surface treating agents for the purpose of improving dispersibility in the synthetic resin.
【００２７】[0027]
【作用】本発明の焼却方法において上述した全硫黄量及
び全ナトリウム量が一定量以下の含水酸化第二鉄粒子や
酸化鉄粒子が優れた燃焼特性を発揮する事実について、
本発明者は次のように考えている。分子構造中に炭化水
素鎖を有する合成樹脂を含む固形状の被焼却物を燃焼さ
せる場合には、被焼却物が加熱によって分解し、その結
果発生した可燃性の低分子量の気体又は蒸気が燃焼する
＜分解燃焼＞が進行するが、分解燃焼が速やかに行われ
るためには、（１）加熱と酸素の作用により被焼却物が
早急に可燃性の低分子量の気体成分又は蒸気成分に分解
され、（２）発生した可燃性の低分子量の気体成分又は
蒸気成分が十分な酸素の供給下のもとで、より低分子量
の各種の中間体を経由する素反応を含む複雑な経路を通
りながら、ヒドロキシラジカル等の各種の活性酸素種に
より最終的に二酸化炭素と水にまで転換される、という
二つの過程がバランスよく進行する必要がある。In the incineration method of the present invention, the fact that the above-mentioned ferric oxide hydroxide particles or iron oxide particles having a total sulfur content and a total sodium content of not more than a certain amount exert excellent combustion characteristics,
The present inventor thinks as follows. When burning a solid incinerator containing a synthetic resin having a hydrocarbon chain in its molecular structure, the incinerator is decomposed by heating, and the resulting flammable low-molecular-weight gas or vapor burns. <Decomposition combustion> progresses, but in order for decomposition combustion to be carried out quickly, (1) the incineration object is promptly decomposed into a combustible low-molecular-weight gas component or vapor component by the action of heating and oxygen. , (2) The generated flammable low-molecular weight gas or vapor component is supplied with sufficient oxygen, while passing through a complicated route including elementary reactions via various intermediates of lower molecular weight. , The final conversion to carbon dioxide and water by various active oxygen species such as hydroxy radicals, etc., needs to proceed in a well-balanced manner.
【００２８】焼却炉中に存在する、含水酸化第二鉄粒子
や酸化鉄粒子は、表面の鉄原子に水が解離吸着してでき
る表面水酸基により安定化されているが、燃焼過程にお
ける加熱によって表面水酸基間で脱水が起こり、配位不
飽和な鉄イオン及び酸素イオンが生じる。そして、被焼
却物の分解表面に接するか、被焼却物の内部にある含水
酸化第二鉄粒子や酸化鉄粒子の表面に生成した配位不飽
和な酸素イオンは、酸素の供給が比較的に不十分なため
主として有機物からの脱水素反応と炭素−炭素鎖の切断
反応の触媒活性を示し、上記の（１）の過程を促進する
ものと考えられる。The ferric oxide hydroxide particles and iron oxide particles present in the incinerator are stabilized by surface hydroxyl groups formed by dissociative adsorption of water on iron atoms on the surface. Dehydration occurs between the hydroxyl groups to produce iron and oxygen ions that are coordinately unsaturated. Then, the coordinately unsaturated oxygen ions generated on the surface of the ferric oxide hydroxide particles or iron oxide particles that are in contact with the decomposition surface of the incineration object or inside the incineration object, supply oxygen relatively. Since it is insufficient, it exhibits catalytic activity mainly for the dehydrogenation reaction from organic matter and the carbon-carbon chain cleavage reaction, and is considered to accelerate the process (1).
【００２９】一般に、脱水素反応と炭素−炭素間の切断
反応の触媒活性の比率が適切でないと、残存する合成樹
脂の可燃成分中の水素／炭素比が減少して可燃性の低分
子量の気体成分又は蒸気成分に分解される比率が低下
し、燃焼しにくくなるが、本発明で使用する含水酸化第
二鉄粒子や酸化鉄粒子では、脱水素反応と炭素−炭素間
の切断反応の触媒活性の比率が適切であり、残存する被
焼却物の可燃成分が可燃性の低分子量の気体成分又は蒸
気成分に分解される比率が高い。In general, if the ratio of the catalytic activity of the dehydrogenation reaction and the carbon-carbon cleavage reaction is not appropriate, the hydrogen / carbon ratio in the combustible components of the remaining synthetic resin decreases and the combustible low molecular weight gas. The rate of decomposition into components or vapor components decreases, making combustion difficult, but in the ferric oxide hydroxide particles and iron oxide particles used in the present invention, the catalytic activity of dehydrogenation reaction and carbon-carbon cleavage reaction Is appropriate, and the remaining combustible components of the incineration material are highly decomposed into combustible low-molecular-weight gas components or vapor components.
【００３０】被焼却物の内部にある含水酸化第二鉄粒子
や酸化鉄粒子は、被焼却物の分解燃焼の進行とともに気
相に放出される。酸素の供給が十分に行われる気相中に
含水酸化第二鉄粒子や酸化鉄粒子が懸濁した状態では、
含水酸化第二鉄粒子や酸化鉄粒子の表面に生成した配位
不飽和な鉄イオンは、酸素を吸着して酸素を活性化し、
各種の活性酸素種を作りだして、上記の（２）の過程を
促進する。The ferric oxide hydroxide particles and iron oxide particles inside the incineration object are released into the gas phase as the decomposition and combustion of the incineration object progress. In a state in which ferric oxide hydroxide particles and iron oxide particles are suspended in the gas phase in which oxygen is sufficiently supplied,
Coordinatively unsaturated iron ions generated on the surfaces of ferric oxide hydroxide particles and iron oxide particles adsorb oxygen and activate oxygen,
By creating various active oxygen species, the process of (2) above is promoted.
【００３１】しかしながら、含水酸化第二鉄粒子や酸化
鉄粒子中に含まれる硫黄は、配位不飽和な鉄イオンに結
合して触媒活性を低下させるとともに燃焼時に硫酸イオ
ンとして挙動して粒子内の焼結を促進して触媒活性の有
効面積を小くし、同様にナトリウムは残灰中の成分と反
応して触媒活性を低下させる。However, the sulfur contained in the ferric oxide hydroxide particles and the iron oxide particles binds to the coordinatively unsaturated iron ions to reduce the catalytic activity, and at the same time acts as sulfate ions during combustion and becomes It promotes sintering to reduce the effective area of catalytic activity, and similarly sodium reacts with the components in the residual ash to reduce catalytic activity.
【００３２】したがって、以上の機構によれば、合成樹
脂を含む被焼却物と全硫黄量が０．８ｗｔ％以下及び全
ナトリウム量が０．５ｗｔ％以下であって、全硫黄量と
全ナトリウム量の合計量が１．０ｗｔ％以下の含水酸化
第二鉄粒子又は酸化鉄粒子もしくは当該粒子の混合物を
別々に供給して燃焼させるに際しては、含水酸化第二鉄
粒子や酸化鉄粒子もしくは当該粒子の混合物を焼却炉内
の気相中に直接噴霧添加すれば、気相中で（２）の過程
の触媒活性を発揮させるとともに、被焼却物表面に移行
した含水酸化第二鉄粒子や酸化鉄粒子もしくは当該粒子
の混合物が被焼却物表面で（１）の過程を促進すること
になる。Therefore, according to the above mechanism, the incineration product containing the synthetic resin, the total sulfur amount of 0.8 wt% or less and the total sodium amount of 0.5 wt% or less, and the total sulfur amount and the total sodium amount. When the ferric oxide hydroxide particles or iron oxide particles or a mixture of the iron oxide particles having a total amount of 1.0 wt% or less are separately supplied and burned, If the mixture is directly spray-added to the gas phase in the incinerator, the catalytic activity of the process (2) will be exhibited in the gas phase, and ferric oxide hydroxide particles and iron oxide particles transferred to the surface of the incineration object. Alternatively, the mixture of the particles accelerates the process (1) on the surface of the material to be incinerated.
【００３３】一方、あらかじめ全硫黄量が０．８ｗｔ％
以下及び全ナトリウム量が０．５ｗｔ％以下であって、
全硫黄量と全ナトリウム量の合計量が１．０ｗｔ％以下
の含水酸化第二鉄粒子や酸化鉄粒子もしくは当該粒子の
混合物を含有している合成樹脂を含む被焼却物を燃焼さ
せる場合には、あらかじめ含有している粒子により
（１）の過程は当然活性化されるので十分効果的である
が、焼却炉内の気相中に更に含水酸化第二鉄粒子や酸化
鉄粒子もしくは当該粒子の混合物を粉体又はスラリー状
態で直接噴霧添加すれば、（２）の過程も十分活性化さ
せることになるのでより好ましい。On the other hand, the total amount of sulfur is 0.8 wt% in advance.
And the total amount of sodium is 0.5 wt% or less,
When burning an incineration object containing a synthetic resin containing ferric oxide hydroxide particles or iron oxide particles or a mixture of the particles in which the total amount of total sulfur and total sodium is 1.0 wt% or less, Since the process (1) is naturally activated by the particles contained in advance, it is sufficiently effective, but the ferric oxide-containing particles or iron oxide particles or the particles concerned can be further added to the gas phase in the incinerator. It is more preferable to directly add the mixture in the form of powder or slurry by spraying since the step (2) is sufficiently activated.
【００３４】[0034]
【実施例】以下、本発明を実施例ならびに比較例によっ
て詳細に説明する。 実施例１、比較例１ 表１に示した組成の被焼却物０．１ｇを１．０リットル
／分の空気を流しながら所定温度で２０分間燃焼させ
て、燃焼発生ガスの組成分析及び焼却後の残灰からの金
属溶出試験を行った。燃焼発生ガスの組成を表２に、金
属溶出試験の結果を表３に示す。なお、この試験に使用
した紡錘状ゲータイト粒子は全硫黄量が０．０６１ｗｔ
％、全ナトリウム量が０．１８ｗｔ％であり、粒度分布
が３６％、平均粒子径が０．３０μｍ、軸比が１２、Ｂ
ＥＴ比表面積が８０m2/gであった。The present invention will be described in detail below with reference to Examples and Comparative Examples. Example 1, Comparative Example 1 0.1 g of the incineration material having the composition shown in Table 1 was burned for 20 minutes at a predetermined temperature while flowing 1.0 liter / min of air, and after composition analysis of combustion generated gas and incineration. The metal elution test from the residual ash of the above was performed. The composition of the combustion-generated gas is shown in Table 2, and the result of the metal elution test is shown in Table 3. The spindle-shaped goethite particles used in this test had a total sulfur content of 0.061 wt.
%, The total amount of sodium is 0.18 wt%, the particle size distribution is 36%, the average particle size is 0.30 μm, the axial ratio is 12, B
The ET specific surface area was 80 m 2 / g.
【００３５】[0035]
【表１】 [Table 1]
【００３６】[0036]
【表２】 [Table 2]
【００３７】[0037]
【表３】 [Table 3]
【００３８】表１〜３の結果からも明らかなように、全
硫黄量が０．０６１ｗｔ％、全ナトリウム量が０．１８
ｗｔ％の紡錘状ゲータイトを存在させた実施例１の被焼
却物を焼却した場合、比較例１の場合に比べて燃焼時に
発生するガス中の一酸化炭素濃度が少なく、また、８０
０℃のような低温での燃焼条件では窒素酸化物（ＮＯ
ｘ）の発生量も少なくなった。また、実施例１の場合は
ガスとして回収できた炭素量も各温度で被焼却物の可燃
物中の理論炭素量４５％とほぼ同じ値を示し、完全燃焼
していることを示しているのに対して、比較例１の場合
は９００℃を超える高温になると煤の発生が多くなっ
て、ガスとして回収できた炭素量が理論値よりも少なく
なっていて不完全燃焼していることを示している。As is clear from the results shown in Tables 1 to 3, the total sulfur content is 0.061 wt% and the total sodium content is 0.18.
When the material to be incinerated in Example 1 in which wt% spindle-shaped goethite was present was incinerated, the concentration of carbon monoxide in the gas generated during combustion was lower than that in Comparative Example 1, and 80
Under low temperature combustion conditions such as 0 ° C, nitrogen oxides (NO
The amount of x) generated also decreased. Further, in the case of Example 1, the amount of carbon recovered as a gas is almost the same as the theoretical amount of carbon 45% in the combustible material of the incineration object at each temperature, indicating that the combustion is complete. On the other hand, in the case of Comparative Example 1, the generation of soot increased when the temperature exceeded 900 ° C., and the amount of carbon that could be recovered as gas was less than the theoretical value, indicating that incomplete combustion occurred. ing.
【００３９】更に、金属溶出試験の結果からも比較例１
の場合は焼却後の残灰から鉛、亜鉛が検出されたのに対
して、実施例１の焼却後の残灰からはいずれも検出され
ず本発明の焼却方法を採用した場合には残灰中の重金属
を捕集して不溶化する効果があることを示している。Further, from the result of the metal elution test, Comparative Example 1
In the case of No. 1, lead and zinc were detected from the residual ash after incineration, whereas none was detected from the residual ash after incineration of Example 1, and when the incineration method of the present invention was adopted, It shows that it has the effect of collecting and insolubilizing the heavy metals inside.
【００４０】次に、含水酸化第二鉄粒子又は酸化鉄粒子
をあらかじめ合成樹脂中に含有させた場合の燃焼特性を
について説明する。なお、合成樹脂組成物の燃焼特性は
以下の方法によって評価した。燃焼速度は、合成樹脂組
成物を１０ｍｇを秤取り、３００ｍｌ／分の空気中又は
低酸素濃度下（空気／窒素＝１：１）において昇温速度
１０℃／分の割合で昇温させたときの重量変化を熱重量
分析装置（セイコー電子工業（株）製）で測定し、急激
な重量減少が開始した時間から急激な重量減少が終了し
た時間までに要した時間（この間で燃焼が起こっている
と推定される。）で示した。Next, the combustion characteristics when the ferric oxide hydroxide particles or iron oxide particles are contained in the synthetic resin in advance will be described. The combustion characteristics of the synthetic resin composition were evaluated by the following method. The burning rate is measured when 10 mg of the synthetic resin composition is weighed and heated at a heating rate of 10 ° C./min in air of 300 ml / min or under low oxygen concentration (air / nitrogen = 1: 1). Was measured with a thermogravimetric analyzer (manufactured by Seiko Denshi Kogyo Co., Ltd.), and the time required from the start of the sudden weight reduction to the end of the sudden weight reduction (burning during this period It is presumed that there is.)
【００４１】残存可燃成分量（この値が小さいほど焼却
後の燃え残りや残灰量が少ないと考えられる。）は、上
記測定において、急激な重量減少が終了した時点におけ
る可燃成分当たりに換算した残存重量率（％）で示し
た。The amount of residual combustible components (the smaller the value, the smaller the amount of unburned residue and residual ash after incineration) is converted into the amount of combustible components at the time when the rapid weight reduction is completed in the above measurement. The remaining weight ratio (%) is shown.
【００４２】低温燃焼性（有機物が完全に燃え尽きてし
まうのに必要な温度と考えられる。）は、上記測定にお
いて、重量減少がこれ以上起こらなくなった時の温度で
示した。The low temperature flammability (which is considered to be the temperature required for the organic substances to be completely burned out) is indicated by the temperature at which the weight loss does not occur in the above measurement.
【００４３】実施例２〜１１、比較例２〜８ 押出機を用いて溶融混練して表４に示した組成の合成樹
脂組成物を作成して燃焼特性を測定した。結果を表５に
示す。また、比較のために、含水酸化第二鉄粒子や酸化
鉄粒子を全く含有していない高密度ポリエチレン又は低
密度ポリエチレンのみからなる合成樹脂組成物（比較例
２、３）、低密度ポリエチレンにカーボンブラック又は
炭酸カルシウムを所定量添加した合成樹脂組成物（比較
例４、５）、低密度ポリエチレンに０．１ｗｔ％未満の
紡錘状ゲータイト粒子を添加した合成樹脂組成物（比較
例６）、更に、低密度ポリエチレンに全硫黄量及び全ナ
トリウム量が多い紡錘状ゲータイト粒子又は粒状マグネ
タイト粒子を含有させた合成樹脂組成物（比較例７、
８）を実施例と同様にして調製して燃焼特性を測定し
た。結果を同じく表５に示す。Examples 2 to 11 and Comparative Examples 2 to 8 Melt kneading was carried out using an extruder to prepare a synthetic resin composition having the composition shown in Table 4 and its combustion characteristics were measured. Table 5 shows the results. For comparison, a synthetic resin composition consisting of high-density polyethylene or low-density polyethylene containing no ferric oxide hydroxide particles or iron oxide particles (Comparative Examples 2 and 3), low-density polyethylene with carbon A synthetic resin composition in which black or calcium carbonate is added in a predetermined amount (Comparative Examples 4 and 5), a synthetic resin composition in which spindle-shaped goethite particles of less than 0.1 wt% are added to low-density polyethylene (Comparative Example 6), Synthetic resin composition containing low density polyethylene containing spindle-shaped goethite particles or granular magnetite particles having a large amount of total sulfur and total sodium (Comparative Example 7,
8) was prepared in the same manner as in the example and the combustion characteristics were measured. The results are also shown in Table 5.
【００４４】[0044]
【表４】 [Table 4]
【００４５】[0045]
【表５】 [Table 5]
【００４６】表４において、高密度ポリエチレン又は低
密度ポリエチレンのみからなる比較例２、３の合成樹脂
組成物に比べて、実施例にかかる本発明の合成樹脂組成
物は燃焼速度、残存可燃成分量、低温燃焼性のいずれに
ついても向上していることが分かる。一方、カーボンブ
ラックを含有する比較例４の合成樹脂組成物は残存可燃
成分量は少なくなって向上しているが、燃焼速度及び低
温燃焼性が比較例３に比べて低下し、炭酸カルシウムを
含有する比較例５の合成樹脂組成物は低温燃焼性は向上
するが、燃焼速度が低下し、また残存可燃成分量がさほ
ど向上しないことが分かる。また、比較例６の合成樹脂
組成物のように０．１ｗｔ％未満しか紡錘状ゲータイト
粒子を含有していないと燃焼特性の向上にあまり効果が
ないことが分かる。In Table 4, as compared with the synthetic resin compositions of Comparative Examples 2 and 3 consisting of high-density polyethylene or low-density polyethylene only, the synthetic resin compositions of the present invention according to the examples have a burning rate and a residual combustible component amount. It can be seen that the low temperature combustibility is improved. On the other hand, in the synthetic resin composition of Comparative Example 4 containing carbon black, the amount of residual combustible components was reduced and improved, but the burning rate and low temperature flammability were lower than in Comparative Example 3, and the composition contained calcium carbonate. It can be seen that the synthetic resin composition of Comparative Example 5 improved the low temperature combustibility but decreased the combustion rate and did not significantly improve the amount of the remaining combustible components. Further, it can be seen that if the spindle-shaped goethite particles are contained in an amount of less than 0.1 wt% as in the synthetic resin composition of Comparative Example 6, there is little effect in improving the combustion characteristics.
【００４７】更に、全ナトリウム量が０．５ｗｔ％を越
え、全硫黄量と全ナトリウム量の合計量が１．０ｗｔ％
を越える紡錘状ゲータイトや全硫黄量が０．８ｗｔ％を
越え、全硫黄量と全ナトリウム量の合計量が１．０ｗｔ
％を越える粒状マグネタイト粒子を含有させた合成樹脂
組成物（比較例７、８）は、これらの不純物が少ない実
施例３、４の合成樹脂組成物に比べて燃焼特性を向上さ
せる効果がほとんどなかった。Further, the total amount of sodium exceeds 0.5 wt%, and the total amount of total sulfur and total sodium is 1.0 wt%.
The spindle-shaped goethite and the total amount of sulfur exceed 0.8 wt%, and the total amount of total sulfur and total sodium is 1.0 wt.
% Of the granular magnetite particles (Comparative Examples 7 and 8) had almost no effect of improving the combustion characteristics as compared with the synthetic resin compositions of Examples 3 and 4 containing few impurities. It was
【００４８】[0048]
【効果】本発明の焼却方法は燃焼促進剤として作用する
特定の含水酸化第二鉄粒子又は酸化鉄粒子を焼却炉中に
共存させて燃焼させているので、合成樹脂を含む被焼却
物を焼却炉で焼却する際に燃焼促進作用を発揮して、従
来、ＮＯｘ量の抑制と焼却炉の破損防止に有効とされて
いる低温、低酸素濃度条件下で焼却炉を運転した場合で
も、燃焼効率を低下させることなく完全に燃焼させて燃
え残りや残灰の生成を少なくすることができるという効
果を有している。[Effect] In the incineration method of the present invention, the specific ferric oxide hydroxide particles or iron oxide particles that act as a combustion accelerator are made to coexist in the incinerator and burned, so that the incineration object containing the synthetic resin is incinerated. Even when the incinerator is operated under low temperature and low oxygen concentration conditions, which are effective in suppressing NOx amount and preventing damage to the incinerator in the past, the combustion efficiency is exhibited when incinerating in the furnace. It has the effect that it can be completely burned without lowering the amount of unburned gas and the generation of unburned residue and residual ash.
【００４９】また、含水酸化第二鉄粒子や酸化鉄粒子の
本来有している燃焼促進作用によって、ＮＯｘ量の低
減、ダイオキシンの生成抑制等の効果が期待できるとと
もに、含水酸化第二鉄粒子や酸化鉄粒子が焼却中に重金
属の酸化物と反応してフェライトを形成して残灰中の重
金属の水中へ溶解度を低下させて従来の不溶化処理が不
必要になるという効果も有している。Further, due to the inherent combustion promoting action of ferric oxide hydroxide particles and iron oxide particles, NOx amount can be reduced, dioxins can be suppressed from being produced, and the like. It also has an effect that iron oxide particles react with oxides of heavy metals during incineration to form ferrite and reduce the solubility of heavy metals in residual ash into water, making conventional insolubilization unnecessary.
【００５０】更に、このような効果を有する含水酸化第
二鉄粒子や酸化鉄粒子を合成樹脂中にあらかじめ含有さ
せた場合、合成樹脂廃棄物をエネルギー源として有効に
再利用できるという特徴を有している。Further, when ferric oxide hydroxide particles or iron oxide particles having such effects are previously contained in the synthetic resin, the synthetic resin waste can be effectively reused as an energy source. ing.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２３Ｇ 7/12 ＺＡＢ Ｂ０９Ｂ 3/00 ３０３Ｆ (72)発明者 西川 正明 香川県丸亀市中津町1515番地 大倉工業株 式会社内 (72)発明者 斉藤 智 広島県大竹市明治新開１−４ 戸田工業株 式会社大竹工場内 (72)発明者 大杉 稔 広島県大竹市明治新開１−４ 戸田工業株 式会社大竹工場内Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI Technical display location F23G 7/12 ZAB B09B 3/00 303F (72) Inventor Masaaki Nishikawa 1515 Nakatsu-cho, Marugame-shi, Kagawa Okura Industrial Co., Ltd. (72) Inventor Satoshi Saito Satoshi Meiji Shinkai 1-4, Otake City, Hiroshima Prefecture Toda Kogyo Co., Ltd. Inside the Otake Plant (72) Minor Osugi 1-4 Meiji Shinkai 1-4, Otake, Hiroshima Pref. Within
Claims (4)
せる方法において、焼却炉内で単位時間に燃焼される被
焼却物１００重量部に対して、全硫黄量が０．８ｗｔ％
以下及び全ナトリウム量が０．５ｗｔ％以下であって全
硫黄量と全ナトリウム量の合計量が１．０ｗｔ％以下で
ある含水酸化第二鉄粒子又は酸化鉄粒子もしくは当該粒
子の混合物を単位時間当たり０．１〜２５重量部の割合
で燃焼炉内に共存させて燃焼させることを特徴とする焼
却方法。1. A method of burning an incinerator containing a synthetic resin in an incinerator, wherein the total amount of sulfur is 0.8 wt% per 100 parts by weight of the incinerator burned in a unit time in the incinerator.
Or less and the total amount of sodium is 0.5 wt% or less, and the total amount of total sulfur amount and total sodium amount is 1.0 wt% or less, ferric oxide hydroxide particles or iron oxide particles or a mixture of the particles is used per unit time. The incineration method is characterized in that 0.1 to 25 parts by weight per unit is allowed to coexist and burn in a combustion furnace.
は当該粒子の混合物を合成樹脂組成物、粉体、スラリー
の少なくとも一つからなる態様で焼却炉内に投入して燃
焼させることを特徴とする請求項１記載の焼却方法。2. A ferric oxide hydroxide particle, an iron oxide particle, or a mixture of the particles is charged into an incinerator and burned in a form of at least one of a synthetic resin composition, a powder and a slurry. The incineration method according to claim 1.
ウム量が０．５ｗｔ％以下である紡錘状ゲータイト粒子
を使用することを特徴とする請求項１記載の焼却方法。3. The incineration method according to claim 1, wherein spindle-shaped goethite particles having a total sulfur content of 0.2 wt% or less and a total sodium content of 0.5 wt% or less are used.
ウム量が０．５ｗｔ％以下であって全硫黄量と全ナトリ
ウム量の合計量が１．０ｗｔ％以下である粒状マグネタ
イト粒子を使用することを特徴とする請求項１記載の焼
却方法。4. Use of granular magnetite particles having a total sulfur amount of 0.8 wt% or less, a total sodium amount of 0.5 wt% or less, and a total amount of total sulfur amount and total sodium amount of 1.0 wt% or less. The incineration method according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24212895A JP3340290B2 (en) | 1995-09-20 | 1995-09-20 | Incineration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24212895A JP3340290B2 (en) | 1995-09-20 | 1995-09-20 | Incineration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0989228A true JPH0989228A (en) | 1997-04-04 |
| JP3340290B2 JP3340290B2 (en) | 2002-11-05 |
Family
ID=17084727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24212895A Expired - Fee Related JP3340290B2 (en) | 1995-09-20 | 1995-09-20 | Incineration method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3340290B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001089677A (en) * | 1999-09-22 | 2001-04-03 | Okura Ind Co Ltd | Resin composition |
| JP2004322033A (en) * | 2003-04-28 | 2004-11-18 | San Frontier Technology:Kk | Device for feeding fine particles and combustion furnace equipped with the same |
| JP2019148406A (en) * | 2018-02-28 | 2019-09-05 | 戸田工業株式会社 | Method of burning biomass fuel |
| JP2019214014A (en) * | 2018-06-12 | 2019-12-19 | Ｊｆｅエンジニアリング株式会社 | Device for incinerating sewage and method for incinerating the same |
-
1995
- 1995-09-20 JP JP24212895A patent/JP3340290B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001089677A (en) * | 1999-09-22 | 2001-04-03 | Okura Ind Co Ltd | Resin composition |
| JP2004322033A (en) * | 2003-04-28 | 2004-11-18 | San Frontier Technology:Kk | Device for feeding fine particles and combustion furnace equipped with the same |
| JP2019148406A (en) * | 2018-02-28 | 2019-09-05 | 戸田工業株式会社 | Method of burning biomass fuel |
| JP2019214014A (en) * | 2018-06-12 | 2019-12-19 | Ｊｆｅエンジニアリング株式会社 | Device for incinerating sewage and method for incinerating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3340290B2 (en) | 2002-11-05 |
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