JP2002181304A - Measuring method of reduced amount of emission of carbon dioxide - Google Patents
Measuring method of reduced amount of emission of carbon dioxideInfo
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- JP2002181304A JP2002181304A JP2000377595A JP2000377595A JP2002181304A JP 2002181304 A JP2002181304 A JP 2002181304A JP 2000377595 A JP2000377595 A JP 2000377595A JP 2000377595 A JP2000377595 A JP 2000377595A JP 2002181304 A JP2002181304 A JP 2002181304A
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、二酸化炭素排出削
減量の計測方法に関する。特に、二酸化炭素排出削減量
を二酸化炭素クレジットとして認証するのに好適な発明
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring a carbon dioxide emission reduction amount. In particular, the present invention is suitable for authenticating a carbon dioxide emission reduction amount as carbon dioxide credit.
【０００２】[0002]
【背景技術】昨今の地球環境フレンドリー化の流れか
ら、地球の温暖化の主たる原因となっている二酸化炭素
（ＣＯ2 ）の削減が緊急課題となっている。2. Description of the Related Art With the recent trend toward global environmental friendliness, reduction of carbon dioxide (CO 2 ), which is a main cause of global warming, has become an urgent issue.
【０００３】このため、「地球温暖化防止京都会議」
（１９９７年）において、各国の二酸化炭素（ＣＯ2 ：
温暖化ガス）の排出削減量の数値目標が決まった。[0003] Therefore, "Kyoto Conference on Global Warming Prevention"
(1997), carbon dioxide (CO 2 :
Numerical targets for reducing greenhouse gas emissions have been set.
【０００４】二酸化炭素が温暖化ガスとされる理由は下
記のとおりである（「林業基金 No.51 」（1998年３
月）ｐ62から引用）。The reason why carbon dioxide is regarded as a greenhouse gas is as follows (“Forestry Fund No. 51” (March 1998)
Mon) quoted from p62).
【０００５】「二酸化炭素は、空気中に０．０３％強含
まれているだけであるが、気候変動に及ぼす影響は大き
いと考えられている。二酸化炭素は太陽から地球に届い
た光の成分はよく通すが、逆に地表面からの輻射光に多
く含まれる波長の長い成分（赤外線）は通しにくい。こ
のため、二酸化炭素の量が多いと、同じ太陽エネルギー
でも地球表面の温度が高くなる。この働きは、ちょうど
温室のガラスと同じ働きがあるので、温室効果と呼ばれ
る。」 上記温暖化ガスの削減目標に対応するために、「温暖化
ガス排出権取引き」市場の創設が予定されている。「温
暖化ガス排出権取引き」に関する新聞記事（平成１２年
８月３日付け「日本経済新聞」）を以下に部分引用す
る。[0005] Although carbon dioxide is contained in the air only in an amount of more than 0.03%, it is considered that it has a great effect on climate change. Carbon dioxide is a component of light reaching the earth from the sun. , But it is difficult to pass long-wavelength components (infrared rays) that are often included in radiation from the earth's surface, so if the amount of carbon dioxide is large, the temperature of the earth's surface will increase even with the same solar energy This work is called the greenhouse effect because it has exactly the same function as glass in a greenhouse. "In order to meet the above-mentioned greenhouse gas reduction targets, a" greenhouse gas emission trading "market will be created. ing. A newspaper article on "Greenhouse Gas Emissions Trading"("Nihon Keizai Shimbun" dated August 3, 2000) is partially quoted below.
【０００６】「１９９７年の地球温暖化防止京都会議で
は、各国別に温暖化ガスの排出削減目標を定めた。これ
を受け、各国政府は大型工場を持つ国内企業に対し削減
目標を設定する見通しだ。例えば、目標が６％減ならば
百万トンの排出量を９４万トンに削減する必要がある
が、設備増強などで排出量が増える企業や、生産効率化
等で排出量が半分に減る企業などがでてくる。"The Kyoto Conference on Global Warming Prevention in 1997 established targets for reducing greenhouse gas emissions in each country. In response, governments are expected to set reduction targets for domestic companies with large factories. For example, if the target is to be reduced by 6%, it is necessary to reduce one million tons of emissions to 940,000 tons, but emissions will be reduced by half due to companies that increase emissions due to the expansion of facilities and production efficiency. Companies come out.
【０００７】目標を上回る削減を達成した企業と削減目
標を達成できなかった企業が過不足分を売買するのが排
出権取り引きだ。……参加企業が増えれば買い手と売り
手が温暖化ガスの１トン当たりの希望価格と売買量を商
社に提示し、条件ごとに取り引きが成立する市場が誕生
する。…は世界的な排出権取引き年間売買高が２００８
年に２０兆円超になると試算している。」 そして、上記排出権取り引きには、いわゆる「ＣＯ2 ク
レジット（炭素権：炭酸ガスの削減量を担保する有価証
券）」が必要となる。[0007] Emissions trading involves companies that have achieved reductions in excess of the target and those that have failed to achieve the reduction target buying and selling excess or deficiency. ...... If the number of participating companies increases, buyers and sellers will provide the trading company with the desired price and trading volume per ton of greenhouse gas, and a market will be created in which transactions can be established for each condition. … Is 2008 annual trading volume of emissions trading
It is estimated that it will exceed 20 trillion yen a year. The above emission trading requires so-called “CO 2 credits (carbon rights: securities that guarantee the reduction of carbon dioxide)”.
【０００８】しかし、ＣＯ2 排出量を具体的に削減し、
その効果（削減量）を明確に計量・評価する技術は、本
発明者らが知る限りにおいては存在しない。However, specifically reducing CO 2 emissions,
There is no technique for clearly measuring and evaluating the effect (reduction amount) as far as the present inventors know.
【０００９】本発明は、上記にかんがみて、ＣＯ2 排出
量を具体的に削減し、その効果（削減量）を明確に計量
・評価するＣＯ2 排出削減量の計測方法を提供すること
を目的とする。[0009] The present invention aims to In view of the above, specifically reducing CO 2 emissions, provides a method of measuring the effect (reduction) clearly weighed and evaluated CO 2 emission reductions And
【００１０】[0010]
【課題を解決するための手段】本発明に係るＣＯ2 排出
削減量の計測方法は、上記課題を、下記構成により解決
するものである。SUMMARY OF THE INVENTION A method for measuring a CO 2 emission reduction amount according to the present invention solves the above-mentioned problem by the following constitution.
【００１１】化石燃料をバイオマス燃料とともに発電用
ボイラーの燃焼炉に投入して所定期間の累積発電量を計
測して、該累積発電量に対応する消費化石燃料の減少量
を、該減少量の化石燃料による二酸化炭素（ＣＯ2 ）の
発生量に換算して二酸化炭素排出削減量とすることを特
徴とする。The fossil fuel and the biomass fuel are charged into a combustion furnace of a power generation boiler, and the accumulated power generation amount is measured for a predetermined period, and the decrease in the amount of fossil fuel consumed corresponding to the accumulated power amount is determined by the fossil fuel of the decrease amount. It is characterized in that the amount of carbon dioxide (CO 2 ) generated by the fuel is converted into the amount of carbon dioxide emission reduction.
【００１２】上記において、化石燃料としては石炭が望
ましい。固形バイオマス燃料と混合させ易いためであ
る。In the above, coal is desirable as the fossil fuel. This is because it is easy to mix with the solid biomass fuel.
【００１３】また、化石燃料１００質量部に対するバイ
オマス燃料の混合比率が１０質量部以下、望ましくは５
質量部以下とすることが、化石燃料の燃焼度にバイオマ
ス燃料が影響を与えず望ましい。The mixing ratio of the biomass fuel to 100 parts by mass of the fossil fuel is 10 parts by mass or less, preferably 5 parts by mass.
It is desirable that the amount be not more than parts by mass because the biomass fuel does not affect the burnup of the fossil fuel.
【００１４】バイオマス燃料としては、枯れ草類、間伐
材及びバークの群から１種又は２種以上を選択すること
が、近過去における植物の炭酸同化作用で吸収した結果
としての炭酸ガスの削減となるので望ましい。As the biomass fuel, the selection of one or more from the group of hay, thinned wood and bark results in the reduction of carbon dioxide gas as a result of absorption by the carbon assimilation of plants in recent years. So desirable.
【００１５】本発明に係る二酸化炭素クレジットの認証
に必要な二酸化炭素排出削減量の計測は、大規模発電所
において行うことが望ましい。大規模化石燃料発電所に
おいては、品質管理面で化石燃料の燃焼特性や運転につ
いて蓄積データが豊富であり、ばらつきの少ない正確な
評価が可能となる。The measurement of the amount of carbon dioxide emission reduction required for the certification of carbon dioxide credit according to the present invention is desirably performed in a large-scale power plant. In a large-scale fossil fuel power plant, accumulated data on the combustion characteristics and operation of fossil fuels are abundant in terms of quality control, and accurate evaluation with little variation is possible.
【００１６】また、大規模発電所では、一基で多量のバ
イオマス燃料の使用が可能となり、安定した信頼性のあ
るＣＯ2 排出削減量の計測が可能となる。Further, in a large power plant, it allows the use of large quantities of biomass fuel in one group, it is possible to measure a stable reliable CO 2 emission reduction.
【００１７】[0017]
【発明の実施形態】図１に本発明のＣＯ2 排出削減量の
計測方法に使用する石炭発電のプラントモデル図を示す
とともに、図２に本発明のＣＯ2 排出削減量の計測方法
を使用してのＣＯ2 クレジット発行までの流れ図を示
す。The plant model diagram of coal power to be used for CO 2 emission reduction amount measuring method of the present invention together with 1 [Embodiment of the Invention, using the measurement method of the CO 2 emission reduction amount of the present invention in FIG. 2 1 shows a flow chart until all CO 2 credits are issued.
【００１８】ここでは、発電用ボイラーとして固形燃料
（石炭）直焚式を例に採るが、石炭やバイオマス等の固
形燃料をガス化して発電に使用する場合にも本発明は勿
論適用できる。上記バイオマス等の固形燃料をガス化す
る公知技術としては、特開昭６３−１２０８２４、同６
３−１４０８０５、特開平６−１１１０１、同６−３０
２６６５号公報等に記載されている。Here, a solid fuel (coal) direct-fired type is taken as an example of a boiler for power generation. However, the present invention can of course be applied to a case where a solid fuel such as coal or biomass is gasified and used for power generation. Known techniques for gasifying solid fuels such as biomass are disclosed in JP-A-63-120824 and JP-A-63-120824.
3-140805, JP-A-6-11101, 6-30
No. 2665, and the like.
【００１９】石炭（化石燃料）１２をバイオマス燃料１
４とともに発電用ボイラー１６の燃焼炉（火炉）１６ａ
に投入して所定期間の累積発電量を計測する。ここで、
図例中、１６ｂは熱交換器（過熱器、再熱器）、１６ｃ
は節炭器である。Coal (fossil fuel) 12 is converted to biomass fuel 1
4 and the combustion furnace (furnace) 16a of the power generation boiler 16
To measure the accumulated power generation amount for a predetermined period. here,
In the figure, 16b is a heat exchanger (superheater, reheater), 16c
Is a economizer.
【００２０】具体的には、石炭１２は、貯炭場１８から
第一ベルトコンベア２０により混炭室２２へ、さらに、
該混炭室２２から第二ベルトコンベア２４によりホッパ
ー（バンカー）２６に供給される。ここで、混炭室２２
は、種類の異なる石炭を混合するために設けてある。Specifically, the coal 12 is transferred from the coal storage 18 to the coal mixing room 22 by the first belt conveyor 20,
The coal is supplied to the hopper (bunker) 26 from the coal mixing chamber 22 by the second belt conveyor 24. Here, the coal blending room 22
Is provided to mix different types of coal.
【００２１】そして、ホッパー２６内に供給された石炭
は、給炭機（定量スクリュコンベア）２８を経て微粉炭
機（ミル）３０に供給される。微粉炭機３０に供給され
た石炭はそこで粉砕されてボイラー１６の燃焼炉１６ａ
に投入される。ここで、微粉炭機（粉砕機）３０として
は、例えば、バウルミルを使用し、石炭を１mm以下の微
粉に粉砕する。そして、該バウルミルのモータ定格出力
は、例えば、７８０kw、８４．４t/h とする。The coal supplied into the hopper 26 is supplied to a pulverized coal machine (mill) 30 via a coal feeder (quantitative screw conveyor) 28. The coal supplied to the pulverized coal machine 30 is pulverized there and burned in the combustion furnace 16 a of the boiler 16.
It is thrown into. Here, as the pulverized coal machine (pulverizer) 30, for example, a bowl mill is used, and the coal is pulverized into fine powder of 1 mm or less. The rated output of the motor of the bowl mill is, for example, 780 kw and 84.4 t / h.
【００２２】ここで、使用石炭（括弧内はＣ％）は、亜
炭（〜７０％）、褐炭（７０〜７８％）、歴青炭（７８
〜９０％）、無煙炭（９０％〜）のいずれでもよい（日
本化学会編「第５版化学便覧 応用化学編Ｉ」（平７−
３−１５）丸善、P489参照）。通常、歴青炭を、着火
性、燃焼性の見地から使用する。Here, the coal used (C% in parentheses) is lignite (-70%), lignite (70-78%), bituminous coal (78%).
(90%) or anthracite (90% or more) (Chemical Handbook, 5th Edition Handbook of Applied Chemistry I, edited by The Chemical Society of Japan) (Heisei 7-
3-15) Maruzen, p. 489). Usually, bituminous coal is used from the viewpoint of ignitability and combustibility.
【００２３】他方、バイオマス燃料１４は、バイオマス
燃料集積場３２から第三ベルトコンベア３４でバイオマ
ス微粉砕機（ミル）３６に供給される。バイオマス微粉
砕機３６に供給されたバイオマス燃料はそこで微粉砕さ
れてボイラー１６の燃焼炉１６ａに投入される。ここ
で、当該微粉砕機３６としては、前記微粉炭機に使用し
たものと同様のバウルミルを使用でき、該バウルミルに
よりバイオマス燃料を石炭と類似粒径の微粉に、即ち１
mm以下に粉砕する。そして、バイオマス微粉砕機（バウ
ルミル）３６のモータ定格出力も、微粉炭機の場合と同
様、例えば、７８０kw、８４．４t/h とする。On the other hand, the biomass fuel 14 is supplied from a biomass fuel accumulation site 32 to a biomass pulverizer (mill) 36 by a third belt conveyor 34. The biomass fuel supplied to the biomass pulverizer 36 is pulverized there and fed into the combustion furnace 16 a of the boiler 16. Here, as the pulverizer 36, the same bowl mill as that used in the above-mentioned pulverized coal machine can be used, and the biomass fuel is converted into fine powder having a particle size similar to that of coal,
Mill to less than mm. The motor rated output of the biomass pulverizer (baul mill) 36 is, for example, 780 kw and 84.4 t / h, as in the case of the pulverized coal mill.
【００２４】発電用ボイラー１６の構造は、前述の如
く、特に限定されないが、直焚式のものが既存の設備を
利用できて望ましい。そして、発電用ボイラーは、大規
模のものを使用することが望ましい。一基で多量のバイ
オマス燃料の使用が可能となり、安定した信頼性のある
ＣＯ2 排出削減量の計測が可能となるためである。As described above, the structure of the power generation boiler 16 is not particularly limited, but a direct-fired type is preferable because existing equipment can be used. It is desirable to use a large-scale boiler for power generation. This is because a large amount of biomass fuel can be used by one unit, and a stable and reliable measurement of CO 2 emission reduction can be performed.
【００２５】なお、バイオマス燃料１４が濡れていたり
湿気を帯びているとき、乾燥機（図示せず）を通してバ
イオマス燃料粉砕機３６に供給することが望ましい。乾
燥機としては、箱形の連続乾燥機を用いることが望まし
い。When the biomass fuel 14 is wet or moist, it is desirable to supply the biomass fuel 14 to the biomass fuel crusher 36 through a dryer (not shown). It is desirable to use a box-shaped continuous dryer as the dryer.
【００２６】ここで、バイオマス（biomass)燃料とは、
石炭等の化石燃料に対する用語で、炭酸同化（炭酸固
定，炭素固定）作用で形成された成分（セルロース、炭
水化物等）を主体とするものであれば、特に限定されな
い。Here, the biomass fuel is
The term for fossil fuels such as coal is not particularly limited as long as it is mainly composed of components (cellulose, carbohydrate, etc.) formed by the action of carbonic acid assimilation (carbonic acid fixation, carbon fixation).
【００２７】例えば、従来積極的にバイオマス燃料とし
て使用されている、バガス（bagas-se: さとうきび等の
搾り殻）、バーク（樹皮）等とともに、間伐材、建設廃
材、製材廃材、オガクズ及び枯れ草、その他、廃棄野菜
等を使用可能である。特に、バガス、枯れ草類、バー
ク、間伐材が、近過去（１年以内）における炭酸同化作
用で吸収した結果としての炭酸ガスの削減となるので望
ましい。For example, together with bagasse (squeezed hulls such as sugar cane) and bark (bark), which have been actively used as biomass fuels, thinning materials, construction waste materials, sawmill waste materials, sawdust and dead grass, In addition, waste vegetables can be used. In particular, it is desirable because carbon dioxide is reduced as a result of absorption of bagasse, hay, bark, and thinned wood by carbon assimilation in the past (within one year).
【００２８】さらに、荒れ地、はげ山等において、雑草
・牧草等さらにはユーカリ、等の樹木を積極的（計画
的）に育成（植生）して、刈り取って天日で干した枯れ
草として使用したり、伐採（間伐）して間伐材として使
用すれば、荒れ地の有効利用及び炭酸ガスの削減につな
がり易くて望ましい。Furthermore, trees such as weeds and pastures, and even eucalyptus trees are actively (planned) cultivated (vegetated) in wasteland, bald mountains, and the like, and cut and used as sun-dried dead grass. It is desirable to use thinned wood after cutting (thinning), because it easily leads to effective use of wasteland and reduction of carbon dioxide gas.
【００２９】ここで、上記枯れ草類間伐材、とともに建
設廃材、製材廃材等は、産業廃棄物としてエネルギー源
（熱源）として有効利用（熱交換による）されない状態
で焼却されることが多かった。この場合は、本発明にお
けるＣＯ2 削減につながらず、当然ＣＯ2 クレジットと
はなり得ない。Here, in addition to the above thinned forest thinning materials, construction waste materials, sawmill waste materials, and the like are often incinerated without being effectively used (by heat exchange) as an energy source (heat source) as industrial waste. In this case, it does not lead to the reduction of CO 2 in the present invention, and cannot naturally be a CO 2 credit.
【００３０】また、公営の焼却場等で、温水プールや浴
場に有効利用したとしても、種々雑多のバイオマスを主
体とする燃焼だけでは、発熱量や燃焼効率のバラツキが
大きく、ＣＯ2 排出削減量の計測は不可能である。Further, even if the fuel is effectively used for a heated pool or a bath in a public incineration plant, etc., the combustion generated mainly from various biomass alone causes large fluctuations in the calorific value and combustion efficiency, and the CO 2 emission reduction. Measurement is impossible.
【００３１】本発明のＣＯ2 排出削減量の計測法は、大
規模発電所において、化石燃料の補助燃料としてバイオ
マス燃料を使用する。バイオマス燃料の宿命（水分や他
の炭素以外の可燃成分のばらつき）に基づく見かけ単位
質量当たりの熱効率のばらつきがあっても、所定の電力
を得るために必要な石炭等の化石燃料の量の減少量とし
て計測するため、極めて信頼性高く、ＣＯ2 排出削減量
を計測できる。The method for measuring CO 2 emission reduction according to the present invention uses biomass fuel as an auxiliary fuel for fossil fuel in a large-scale power plant. Decrease in the amount of fossil fuels such as coal required to obtain a given amount of power, even if there is variation in apparent thermal efficiency per unit mass based on the fate of biomass fuel (variation in combustible components other than moisture and other carbon) Since it is measured as an amount, the amount of CO 2 emission reduction can be measured with extremely high reliability.
【００３２】ここで、化石燃料１００質量部に対するバ
イオマス燃料の混合比率は、バイオマス燃料の種類、状
態（含水率（水分）、微粉砕度等）さらには、化石燃料
の種類にもよる。例えば、石炭火力発電所で乾燥バイオ
マス燃料の場合、通常、１５質量部以下、望ましくは１
０質量部以下、さらに望ましくは５質量部以下とする。
バイオマス燃料の混合比率が大きすぎると、発電効率が
低下するおそれがある。Here, the mixing ratio of the biomass fuel to 100 parts by mass of the fossil fuel depends on the type and state of the biomass fuel (moisture content (moisture), degree of fine pulverization, etc.) and also on the type of fossil fuel. For example, in the case of dry biomass fuel in a coal-fired power plant, usually 15 parts by mass or less, preferably 1 part by mass or less.
0 parts by mass or less, more preferably 5 parts by mass or less.
If the mixing ratio of the biomass fuel is too large, the power generation efficiency may be reduced.
【００３３】そして、バイオマス燃料を補助燃料として
化石燃料とともにボイラーで燃焼させた場合、熱交換器
（過熱器）１６ｂ内の水は過熱蒸気となってタービン室
３８に送られ、発電機４０の入力軸に直結したタービン
４２を回して発電を行なう。図例のタービンは、排気を
復水器３９により凝結させる復水タービンである。When the biomass fuel is burned in the boiler together with the fossil fuel as an auxiliary fuel, the water in the heat exchanger (superheater) 16b is sent to the turbine chamber 38 as superheated steam, and is input to the generator 40. The turbine 42 directly connected to the shaft is turned to generate power. The turbine in the illustrated example is a condensing turbine in which exhaust gas is condensed by a condenser 39.
【００３４】上記化石燃料として、石炭を例にとった
が、重油ないし天然ガス発電所でも同様に可能である。Although coal is taken as an example of the fossil fuel, it is equally possible in a heavy oil or natural gas power plant.
【００３５】また、バイオマス燃料の種類によっては、
石炭とバイオマス燃料との混合体を同じ微粉砕機（ミ
ル）に投入して粉砕してもよい。Further, depending on the type of biomass fuel,
The mixture of coal and biomass fuel may be charged into the same pulverizer (mill) and pulverized.
【００３６】そして、上記バイオマス燃料を使用するこ
とにより、減少した化石燃料の減少量を計測する。Then, by using the above-mentioned biomass fuel, the amount of decrease in fossil fuel which has decreased is measured.
【００３７】すなわち、原則的に所定期間毎における全
体発電量（Ｐ）＝石炭による発電量（ＰＭ）＋バイオマ
ス燃料による発電量（Ｐｍ） すると、Ｐｍ＝Ｐ−ＰＭとなる。したがって、バイオマ
ス燃料による発電量は、累積発電量に対応する消費化石
燃料（消費石炭）の減少量に対応するものとして簡単に
求められる。That is, if, in principle, the total power generation amount (P) = the power generation amount by coal (PM) + the power generation amount by biomass fuel (Pm) every predetermined period, then Pm = P−PM. Therefore, the amount of power generated by the biomass fuel can be easily obtained as a value corresponding to the amount of consumption of fossil fuel (consumed coal) corresponding to the accumulated amount of power generation.
【００３８】したがって、バイオマス燃料による発電量
（Ｐｍ）は、消費石炭減少量に換算でき、それをＣＯ2
排出の抑制効果（減少量）として求めることができる。
すなわち、ＣＯ2 排出の抑制効果の定量化が可能とな
る。Therefore, the amount of power generation (Pm) by biomass fuel can be converted to the amount of reduction in consumed coal, which is converted into CO 2
It can be obtained as the emission suppression effect (reduction amount).
That is, it is possible to quantify the effect of suppressing CO 2 emission.
【００３９】上記、所定期間は、最低、１週間単位、望
ましくは、電気代と同じく、１ケ月単位とすることが望
ましい。The above-mentioned predetermined period is at least one week unit, preferably one month unit like the electricity bill.
【００４０】ちなみに、炭素含有率５０％のバイオマス
燃料（乾燥）の発熱量は約４０００kcal/kg であり、炭
素含有率８０％の石炭の発熱量は約６８００kcal/kg で
あり、炭素含有率換算としても前者：８０００kcal/kg
、後者：８５００kcal/kg となり、質量当たり発熱効
率が高い。Incidentally, the calorific value of a biomass fuel (dry) having a carbon content of 50% is about 4000 kcal / kg, and the calorific value of coal having a carbon content of 80% is about 6800 kcal / kg. Also the former: 8000kcal / kg
And the latter: 8500 kcal / kg, and the heat generation efficiency per mass is high.
【００４１】特に、大型（タービン）発電機が設置され
ている大規模発電所に上記ＣＯ2 排出削減量の計測方法
を所定期間にわたって行なえば、過去の膨大な累積デー
タが存在しているとともに、公共性が高い事業であるた
め、その信頼性が高い。一基で多量のバイオマス燃料の
使用が可能となり、安定した信頼性のあるＣＯ2 排出削
減量の計測が可能となる。なお、一基当たり出力が小さ
過ぎては、バイオマス燃料を補助燃料として使用したと
き、バイオマス燃料の熱効率（熱収量）のばらつきが大
きい。また、バイオマス燃料を複数の発電機用ボイラー
に分けて燃やす結果となる。いずれの場合も、ＣＯ2 排
出削減量の計測の信頼性が低下し易い。In particular, if the method for measuring the amount of CO 2 emission reduction is performed for a predetermined period in a large-scale power plant in which a large (turbine) generator is installed, enormous accumulated data in the past exists, Since the project is highly public, its reliability is high. A large amount of biomass fuel can be used by one unit, and stable and reliable measurement of CO 2 emission reduction can be performed. If the output per unit is too small, the variation in the thermal efficiency (heat yield) of the biomass fuel is large when the biomass fuel is used as an auxiliary fuel. In addition, the result is that biomass fuel is divided into a plurality of generator boilers and burned. In any case, the reliability of the measurement of the CO 2 emission reduction amount is likely to decrease.
【００４２】大型タービン発電機が設置されている大規
模発電所において本発明により計測したものは、信頼性
が高く、その計測値は公的機関が認証することにより
「ＣＯ 2 クレジット」として、市場で有価証券として取
り引きが可能となるものと期待される。The rule where the large turbine generator is installed
What was measured by the present invention at the model power plant
And the measured values are certified by a public agency.
"CO Two Credits '' and marketable securities
It is expected that this will be possible.
【００４３】[0043]
【発明の効果】本発明の二酸化炭素排出削減量の計測方
法は、化石燃料をバイオマス燃料とともに発電用ボイラ
ーの燃焼炉に投入して所定期間の累積発電量を計測し
て、該累積発電量に対応する消費化石燃料の減少量を、
該減少量の化石燃料による二酸化炭素（ＣＯ2 ）の発生
量に換算して二酸化炭素排出削減量とする構成により、
下記のような作用・効果を奏するものである。According to the method for measuring the amount of carbon dioxide emission reduction of the present invention, a fossil fuel and a biomass fuel are charged into a combustion furnace of a boiler for power generation, and the cumulative power generation for a predetermined period is measured. The corresponding decrease in fossil fuel consumption
By converting the reduced amount of carbon dioxide (CO 2 ) generated by fossil fuel into carbon dioxide emission reduction,
The following operations and effects are achieved.
【００４４】建築廃材や間伐材などをバイオマス燃料と
して利用できるため、燃料コストの低減やゴミ処理問題
の改善策となる。更に、副次的な効果として、木材や間
伐材が価値ある燃料となるため、国内の森林管理が再開
され、長く放置されてきた森林の保護につながる。Since construction waste and thinned wood can be used as biomass fuel, it is a measure to reduce fuel costs and improve waste disposal problems. In addition, as a secondary effect, wood and thinned timber are valuable fuels, and domestic forest management is resumed, leading to the protection of long abandoned forests.
【００４５】本発明の効果を、まとめると、下記のよう
になる。The effects of the present invention are summarized as follows.
【００４６】(1) 従来、余り有効利用されなかったバイ
オマス燃料を、火力発電における補助燃料として使用す
る結果、国内における容易で安価なＣＯ2 排出量削減対
策技術を確立できる。火力発電所のような大型発電機を
備えたところでは、バイオマス燃料を熱効率が良好な状
態で燃焼させることができ、より効果的である。(1) As a result of using biomass fuel which has not been used so effectively as an auxiliary fuel in thermal power generation, an easy and inexpensive technology for reducing CO 2 emission in Japan can be established. Where a large power generator such as a thermal power plant is provided, the biomass fuel can be burned with good thermal efficiency, which is more effective.
【００４７】(2) 大規模火力発電所のような大型発電機
を備えたところでは、バイオマス燃料の種類・態様さら
には化石燃料に対する混合比に関係なく、化石燃料の節
約量によってバイオマス燃料の寄与度を間接的に計算で
きる。すなわち、ＣＯ2 排出削減量を計算するため、信
頼性の高いＣＯ2 クレジットの認証が可能となる。(2) Where a large-scale power generator such as a large-scale thermal power plant is provided, regardless of the type and mode of the biomass fuel and the mixing ratio with respect to the fossil fuel, the contribution of the biomass fuel by the saved amount of the fossil fuel is The degree can be calculated indirectly. That is, since the CO 2 emission reduction amount is calculated, highly reliable CO 2 credit authentication can be performed.
【００４８】(3) 荒れ地やはげ山等に計画的に牧草・雑
草等の草やユーカリ等の樹木（特に成育の早い）を植生
することにより一年毎に刈り採って（又は間伐して）、
上記バイオマス燃料として使用することにより、毎年毎
年、ＣＯ2 クレジットとして貯えることができるととも
に環境保全（荒れ地・森林等の保全）に対する寄与が多
大となる。(3) The grasses such as pastures and weeds and the trees (especially fast growing) such as eucalyptus are vegetatively vegetated on a wasteland or a bald mountain, etc., and are harvested (or thinned) every year.
By using as the biomass fuels, year after year, the contribution to environmental conservation (preservation of such wasteland and forestry) becomes significant it is possible to store as a CO 2 credits.
【図１】本発明のＣＯ2 排出削減量の計測方法に使用す
るプラントモデル図FIG. 1 is a diagram of a plant model used in the method for measuring a CO 2 emission reduction amount according to the present invention.
【図２】本発明のＣＯ2 排出削減量の計測方法を使用し
てのＣＯ2 クレジット発行までの流れ図FIG. 2 is a flowchart for issuing a CO 2 credit using the method for measuring a CO 2 emission reduction amount of the present invention.
【符号の説明】 １２ 石炭（化石燃料） １４ バイオマス燃料 １６ 発電用ボイラー １６ａ 燃焼炉（火炉） １６ｂ 熱交換器（過熱器） １８ 貯炭場 ３０ 微粉反機（ミル） ３２ バイオマス燃料集積場 ３６ バイオマス微粉砕機（ミル） ３８ タービン室 ４０ 発電機[Description of Signs] 12 Coal (fossil fuel) 14 Biomass fuel 16 Boiler for power generation 16a Combustion furnace (fired furnace) 16b Heat exchanger (superheater) 18 Coal storage yard 30 Fine powder counter (mill) 32 Biomass fuel accumulation facility 36 Biomass fine Crusher (mill) 38 Turbine chamber 40 Generator
Claims (5)
用ボイラーの燃焼炉に投入して所定期間の累積発電量を
計測して、該累積発電量に対応する消費化石燃料の減少
量を、該減少量の化石燃料による二酸化炭素（ＣＯ2 ）
の発生量に換算して二酸化炭素排出削減量とすることを
特徴とする二酸化炭素排出削減量の計測方法。1. A fossil fuel is charged into a combustion furnace of a power generation boiler together with a biomass fuel to measure a cumulative power generation amount for a predetermined period, and a decrease amount of the consumed fossil fuel corresponding to the cumulative power generation amount is calculated as the decrease amount. Carbon dioxide (CO 2 ) from fossil fuels
A method for measuring the amount of reduced carbon dioxide emissions, wherein the amount of reduced carbon dioxide is converted into the amount of generated carbon dioxide.
する請求項１記載の二酸化炭素排出削減量の計測方法。2. The method according to claim 1, wherein the fossil fuel is coal.
オマス燃料の混合比率が１０質量部以下であることを特
徴とする請求項１記載の二酸化炭素排出削減量の計測方
法。3. The method for measuring a carbon dioxide emission reduction amount according to claim 1, wherein a mixing ratio of the biomass fuel to 100 parts by mass of the fossil fuel is 10 parts by mass or less.
オマス燃料の混合比率が５質量部以下であることを特徴
とする請求項３記載の二酸化炭素排出削減量の計測方
法。4. The method for measuring a carbon dioxide emission reduction amount according to claim 3, wherein a mixing ratio of the biomass fuel to 100 parts by mass of the fossil fuel is 5 parts by mass or less.
材及びバークの群から１種又は２種以上を選択すること
を特徴とする請求項１、２、３又は４記載の二酸化炭素
排出削減量の計測方法。5. The amount of carbon dioxide emission reduction according to claim 1, wherein one or more kinds of biomass fuels are selected from the group consisting of hay, thinned wood and bark. Measurement method.
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Cited By (6)
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| JP2005291531A (en) * | 2004-03-31 | 2005-10-20 | Babcock Hitachi Kk | Combustion method and equipment of biomass fuel |
| US7343341B2 (en) * | 2002-07-20 | 2008-03-11 | Chicago Climate Exchange, Inc. | Systems and methods for trading emission reductions |
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|---|---|---|---|---|
| US7343341B2 (en) * | 2002-07-20 | 2008-03-11 | Chicago Climate Exchange, Inc. | Systems and methods for trading emission reductions |
| JP2005291531A (en) * | 2004-03-31 | 2005-10-20 | Babcock Hitachi Kk | Combustion method and equipment of biomass fuel |
| DE102008037935A1 (en) | 2007-09-28 | 2009-04-02 | Hitachi, Ltd. | Fuel Environmental Impact Assessment System |
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| CN114631112A (en) * | 2020-01-18 | 2022-06-14 | 株式会社Tbm | CO2 emission reduction credit calculation system using waste water grease |
| WO2023286599A1 (en) * | 2021-07-15 | 2023-01-19 | 三菱重工業株式会社 | Control device for co2 recovery device, control method for co2 recovery device, and program |
| KR102388098B1 (en) * | 2021-10-27 | 2022-04-19 | 에이티알 주식회사 | A monitoring platform for the triple-cogeneration plant using biomass and energy demanders linked to the plant |
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