JPH08145978A - Measuring instrument of un-burned content in ash - Google Patents
Measuring instrument of un-burned content in ashInfo
- Publication number
- JPH08145978A JPH08145978A JP29278794A JP29278794A JPH08145978A JP H08145978 A JPH08145978 A JP H08145978A JP 29278794 A JP29278794 A JP 29278794A JP 29278794 A JP29278794 A JP 29278794A JP H08145978 A JPH08145978 A JP H08145978A
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- dust
- gas
- container
- combustion
- valve
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は石炭等固体燃料の燃焼炉
を有するボイラ等に適用される灰中未燃分計測装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for measuring unburned ash content, which is applied to a boiler having a combustion furnace for solid fuel such as coal.
【０００２】[0002]
【従来の技術】従来、石炭等燃料を燃焼させる燃焼炉を
有するボイラ等では系外へ排出されるダストや排ガス中
の未燃分が多いと燃焼効率が低下するため、ボイラ等の
運転時に系外へ排出される灰中の未燃分量を定期的に計
測し、運転指針の一手法としている。2. Description of the Related Art Conventionally, in a boiler or the like having a combustion furnace for burning a fuel such as coal, the combustion efficiency decreases if there is a large amount of unburned dust in the exhaust gas or exhaust gas. The amount of unburned matter in the ash discharged to the outside is regularly measured and used as a method of operation guidelines.
【０００３】図５は従来の灰中未燃分計測装置の一例を
示す系統図である。FIG. 5 is a system diagram showing an example of a conventional apparatus for measuring unburned matter in ash.
【０００４】図において、ダスト未燃分を有する燃焼排
ガス０１が流れる燃焼炉出口部０２に挿入されているマ
ルチサンプリングプローグ０３にてＪＩＳ法にそった等
速抽気法にて吸引サンプリングされた排ガス０１の一部
はダスト捕集器０４に導かれ、排ガス中の未燃分を含ん
だダストを除じん回収され、弁０５ａを介して捕集容器
０６ａに貯蔵され、一方抽気された排ガスは流量計２
１、流量制御弁２２及び減音器２３をへて大気放出され
る。In the figure, the exhaust gas 01 suction-sampled by the constant velocity extraction method according to the JIS method in the multi-sampling plug 03 inserted in the combustion furnace outlet 02 in which the combustion exhaust gas 01 having unburned dust flows. Part of the gas is guided to the dust collector 04, dusts containing unburned components in the exhaust gas are removed and collected, and stored in the collection container 06a via the valve 05a, while the extracted exhaust gas is measured by the flow meter. Two
1, is discharged to the atmosphere through the flow control valve 22 and the noise reducer 23.
【０００５】また、燃焼炉出口部０２内が加圧の際には
弁０５ａ及び０５ｂを閉とした状態で放出弁０５ｃを開
き、捕集容器０６ａ内を常圧とした後、弁０５ｂを介し
て捕集ダスト０８を試料皿０９に収容し、図示されてい
ない計量器にて試料皿０９の重量を含めた全重量を計測
後、電気炉１０内にて所定温度に加熱し、試料０９内の
捕集ダスト０８中の未燃分を完全燃焼させると下記式に
て減量する。冷却後、再度、試料皿０９を含めた全重量
を計測し、その重量差すなわちＪＩＳ法にもとずく灼熱
減量を求め、この測定値から未燃分として評価してい
る。When the inside of the combustion furnace outlet 02 is pressurized, the discharge valve 05c is opened with the valves 05a and 05b closed, and the inside of the collection container 06a is set to normal pressure, and then the valve 05b is used. The collected dust 08 is accommodated in the sample dish 09, the total weight including the weight of the sample dish 09 is measured by a measuring device (not shown), and the sample dust 09 is heated to a predetermined temperature in the sample oven 09. When the unburned matter in the collected dust 08 of No. 1 is completely burned, the amount is reduced by the following formula. After cooling, the total weight including the sample dish 09 is measured again, the ignition loss based on the weight difference, that is, the JIS method is determined, and the unburned content is evaluated from this measured value.
【０００６】Ｃ＋Ｏ2 →ＣＯ2 C + O 2 → CO 2
【０００７】[0007]
【発明が解決しようとする課題】上記従来の灰中未燃分
計測装置には解決すべき次の課題があった。The above-mentioned conventional apparatus for measuring unburned-content in ash has the following problems to be solved.
【０００８】即ち、近年、低公害燃焼法として炉内脱硫
が効果的になされる流動床燃焼法では脱硫材としてＣａ
ＣＯ3 等が利用されており、特にこの燃焼法ではダスト
中にＣａＣＯ3 ，ＣａＯあるいは反応済のＣａＳＯ4 等
が含まれており、従来の灼熱減量法では加熱時に下記反
応を呈し、 ＣａＣＯ3 →ＣａＯ＋ＣＯ2 ＣａＳＯ4 →ＣａＯ＋ＳＯ2 ガス体となったＣＯ2 あるいはＳＯ2 分相当の重量が減
少し、この減少分はダスト中の未燃分の減少分に加味さ
れ、誤計測値となる、という問題があった。That is, in recent years, in a fluidized bed combustion method in which in-furnace desulfurization is effectively performed as a low-pollution combustion method, Ca is used as a desulfurization material.
CO 3 and the like are used, and particularly in this combustion method, CaCO 3 , CaO or reacted CaSO 4 and the like are contained in the dust. In the conventional cauterization weight loss method, the following reaction occurs when heated, CaCO 3 → CaO + CO 2 CaSO 4 → CaO + SO 2 The weight of CO 2 or SO 2 corresponding to a gas body is reduced, and this reduction is added to the reduction of unburned matter in the dust, resulting in an erroneous measurement value. was there.
【０００９】一方、排ガスサンプル、減圧、試料皿への
捕集、初期計量、灼熱減量及び減量計測、と一つの未燃
分計測値を取得するのには数多くのプロセスを順次実施
してゆく必要があり、サンプリング開始後、未燃分結果
が出るまでに略３０分以上の時間を要し、また、パッチ
式計測法につき、未燃分の時間的な増減変化を評価する
ことが困難という問題があった。On the other hand, it is necessary to sequentially carry out a number of processes in order to obtain one unburned matter measurement value, such as exhaust gas sample, decompression, collection in a sample dish, initial measurement, ignition loss and weight loss measurement. However, it takes about 30 minutes or more after the start of sampling to obtain unburned content results, and it is difficult to evaluate changes in unburned content over time with the patch-type measurement method. was there.
【００１０】本発明は上記課題を解決した灰中未燃分計
測装置を提供することを目的とする。It is an object of the present invention to provide a device for measuring unburned ash content that solves the above problems.
【００１１】[0011]
【課題を解決するための手段】本発明は上記課題の解決
手段として、次の（１）〜（４）に記載の灰中未燃分計
測装置を提供しようとするものである。As a means for solving the above problems, the present invention is to provide an ash unburnt content measuring device as described in (1) to (4) below.
【００１２】（１）．固体燃料等の燃焼ガスの一部を連
続的に抽気し燃焼ガス中の含じんダストを捕集するダス
ト捕集手段と、流動床燃焼方式による還元雰囲気加熱場
及び酸化雰囲気場を有する燃焼室と、排ガス中のＣＯ及
びＣＯ2 測定手段とを具備してなることを特徴とする灰
中未燃分計測装置。(1). A dust collecting means for continuously extracting a part of combustion gas such as solid fuel and collecting dust-containing dust in the combustion gas, and a combustion chamber having a reducing atmosphere heating field and an oxidizing atmosphere field by a fluidized bed combustion method. An apparatus for measuring unburned content in ash, comprising: means for measuring CO and CO 2 in exhaust gas.
【００１３】（２）．固体燃料等の燃焼ガスの一部を連
続的に抽気しその一部又は全量を電気炉等一定温度に保
持した空間通路に導くガス誘導手段と、別途酸素を投入
して形成される酸化雰囲気場を有する燃焼室と、Ｏ2 ，
ＣＯ2 濃度検出手段と、燃焼ガス中に含まれるダストの
捕集手段と、ダスト環境を大気圧場とする減圧手段とを
具備してなることを特徴とする灰中未燃分計測装置。(2). A gas guiding means for continuously extracting a part of combustion gas such as solid fuel and guiding a part or all of the combustion gas to a space passage maintained at a constant temperature such as an electric furnace, and an oxidizing atmosphere field formed by introducing oxygen separately. A combustion chamber having O 2 ,
An apparatus for measuring unburned ash content comprising a CO 2 concentration detecting means, a means for collecting dust contained in combustion gas, and a pressure reducing means for making a dust environment an atmospheric pressure field.
【００１４】（３）．固体燃料等の燃焼ガスの一部を連
続的に抽気し、そのガス中のダストを捕集するダスト捕
集手段と、同ダスト捕集手段の捕集したダストの連続通
過手段と、同連続通過手段を通過するダストの静電容量
を計測する静電容量計測手段とを具備してなることを特
徴とする灰中未燃分計測装置。(3). Dust collecting means for continuously extracting a part of combustion gas such as solid fuel and collecting dust in the gas, continuous passing means for the dust collected by the dust collecting means, and continuous passing And a capacitance measuring unit that measures the capacitance of dust passing through the unit.
【００１５】（４）．上記（３）記載の灰中未燃分計測
装置において、静電容量計測手段に代えダストのＯ2 ，
ＣＯ2 ，ＣＯ等濃度検出手段を具備してなることを特徴
とする灰中未燃分計測装置。(4). In the ash unburnt content measuring device according to the above (3), instead of the capacitance measuring means, dust O 2 ,
An apparatus for measuring unburned content in ash, comprising a means for detecting concentration of CO 2 , CO, etc.
【００１６】[0016]
【作用】本発明は上記のように構成されるので次の作用
を有する。Since the present invention is constructed as described above, it has the following actions.
【００１７】（１）．上記（１）の構成にあっては、連
続的に抽気した燃焼ガス中のダストをダスト捕集手段で
捕集し、還元雰囲気加熱場及び酸化雰囲気場を有する燃
焼室で加熱、たとえばダスト中のＣａＣＯ3 等を分解、
そのＣＯ2 を予めガス体として除去した後、酸化雰囲気
場で燃焼することによって、ＣＯ2 発生量による減量分
を計量し未燃分減量への誤差を回避し、かつ連続サンプ
リングとダスト処理プロセスを自動化し、時間的な未燃
分増減を適確に評価することができる。(1). In the above configuration (1), the dust in the combustion gas continuously extracted is collected by the dust collecting means and heated in the combustion chamber having the reducing atmosphere heating field and the oxidizing atmosphere field, for example, in the dust. Decomposes CaCO 3, etc.,
After removing the CO 2 as a gaseous body in advance, by burning in an oxidizing atmosphere field, the amount of reduction due to the amount of CO 2 produced is measured to avoid errors in the reduction of unburned content, and continuous sampling and dust treatment processes are performed. It is possible to automate and accurately evaluate the increase and decrease in unburned content over time.
【００１８】（２）．上記（２）の構成にあっては酸化
雰囲気場を有する燃焼室とＯ2 ，ＣＯ2 濃度測定手段等
を備えるため、たとえば脱硫材としてＣａＣＯ3 等アル
カリ土類金属を使用した流動床ボイラ等での燃焼ガスの
ダスト中に含まれるＣａＣＯ 3 等の熱分解による減量誤
差の影響を全く回避し、未燃分量と比例関係にあるＯ 2
分圧をＯ2 ，ＣＯ2 濃度検出手段によって求め、かつ連
続的なサンプリングとダスト捕集、減圧処理プロセスを
自動化し、連続的に未燃分増減の経時変化を適確に精度
よく評価することができる。(2). Oxidation in the configuration of (2) above
Combustion chamber with atmosphere field and O2, CO2Concentration measuring means, etc.
Therefore, for example, CaCO is used as a desulfurizing material.3Equal al
Of combustion gas in fluidized bed boilers etc. using potash earth metal
CaCO contained in dust 3Weight loss due to thermal decomposition of
The effect of the difference is completely avoided, and there is a proportional relationship with the unburned amount. 2
Partial pressure is O2, CO2Obtained by the concentration detection means, and
Continuous sampling, dust collection and decompression process
Accurate and accurate with continuous change of unburned components
Can be well evaluated.
【００１９】（３）．上記（３）の構成にあっては燃焼
ガス中のダストをダスト捕集手段により捕集して連続通
過手段中を通過させ、その静電容量を静電容量計測手段
により計測し続けることにより、誘電率はダスト量の未
燃分に比例するところから、連続的に未燃分量を知るこ
とができる。(3). In the above configuration (3), the dust in the combustion gas is collected by the dust collecting means and passed through the continuous passing means, and the capacitance thereof is continuously measured by the capacitance measuring means. Since the dielectric constant is proportional to the unburned amount of dust, the unburned amount can be continuously known.
【００２０】（４）．上記（４）の構成にあっては上記
（３）の構成の静電容量計測手段に代え、Ｏ2 ，Ｃ
Ｏ2 ，ＣＯ等濃度検出手段を設けるので、たとえば連続
通過手段中にＣａＣＯ3 等の還元手段を置き、その前後
でＯ2 ，ＣＯ2 ，ＣＯ等濃度検出手段によりガス濃度を
検出すれば、連続的に未燃分量を知ることができる。(4). In the configuration of (4) above, instead of the capacitance measuring means of the configuration of (3) above, O 2 , C
Since a means for detecting the concentration of O 2 , CO, etc. is provided, for example, if a reducing means such as CaCO 3 is placed in the continuous passage means and the gas concentration is detected by the means for detecting the concentration of O 2 , CO 2 , CO, etc. before and after the means, continuous operation It is possible to know the unburned amount.
【００２１】[0021]
【実施例】本発明の第１〜第４実施例を図１〜図４によ
り説明する。なお、従来例ないしは先の実施例と同様の
部材には同符号を付し、必要ある場合を除き、説明を省
略する。また、従来例または先の実施例と相違する場合
も構成の特段の記載は主要部材のみに留め、それらに付
設される弁その他の部材については作用と共に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First to fourth embodiments of the present invention will be described with reference to FIGS. The same members as those in the conventional example or the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted unless necessary. Further, even when different from the conventional example or the previous embodiment, the special description of the configuration is limited to the main members, and the valves and other members attached thereto will be described together with the operation.
【００２２】（第１実施例）請求項１の発明に係る第１
実施例を図１により説明する。(First Embodiment) The first aspect of the invention according to claim 1
An embodiment will be described with reference to FIG.
【００２３】図１は本実施例の系統図で、０６ａ，０６
ｂはダストの捕集容器、２６はＣＯ 2 計、２７はＳＯ2
計、２８はＣＯ計、３２は還元雰囲気加熱場及び酸化雰
囲気場を有する流動床燃焼方式の燃焼室で、３０はそれ
を加熱する電気炉である。FIG. 1 is a system diagram of this embodiment.
b is a dust collecting container, 26 is CO 2Total 27 is SO2
Total, 28 is a CO meter, 32 is a reducing atmosphere heating field and an oxidizing atmosphere.
A fluidized bed combustion type combustion chamber having an atmosphere field, 30
Is an electric furnace for heating.
【００２４】次に付設部材等の説明と併わせ上記構成の
作用について説明する。Next, the operation of the above configuration will be described together with the description of the attached members and the like.
【００２５】従来例と同様の手順によりダスト捕集器０
４に導びかれた排ガス中の未燃分を含んだダストは加圧
流動床ボイラ等において加圧下の環境にするため、加圧
状態にて捕集容器０６ａに一旦、貯蔵される。The dust collector 0 is manufactured by the same procedure as in the conventional example.
The dust containing unburned matter in the exhaust gas guided to No. 4 is temporarily stored in the collection container 06a in a pressurized state in order to create an environment under pressure in a pressurized fluidized bed boiler or the like.
【００２６】図示されていないＮ2 ガス等不活性ガス供
給装置から弁０５ｅを介してＮ2 ガスを捕集容器０６ｂ
に投入し捕集容器０６ａとほぼ同一圧力に加圧後弁０５
ｅを閉め、均圧弁０５ｄを開き、捕集容器０６ａ及び０
６ｂを同一圧とした後、均圧弁０５ｄを閉め、さらに０
５ｂを開き、捕集容器０６ａ内のダストを捕集容器０６
ｂに移動させた後、弁０５ｂを閉め、さらに放出弁０５
ｃを開き、サイレンサ２４を介して捕集容器０６ｂ内の
加圧下の排ガスを大気へ放出し捕集容器０６ｂ内を減
圧、ダストを取扱い容易な常圧下とするいわゆるロック
ホッパシステムとなっている。[0026] collecting the N 2 gas through the valve 05e from illustration which do not result N 2 gas or the like inert gas supply device container 06b
And pressurize it to a pressure almost the same as that of the collection container 06a.
e is closed, the pressure equalizing valve 05d is opened, and the collection containers 06a and 0
After making 6b the same pressure, close the pressure equalizing valve 05d, and
5b is opened to collect dust in the collection container 06a.
After moving to b, the valve 05b is closed and the release valve 05
c is opened, and the exhaust gas under pressure in the collection container 06b is released to the atmosphere through the silencer 24 to decompress the inside of the collection container 06b, and the so-called lock hopper system in which the dust is under normal pressure for easy handling.
【００２７】一方捕集容器０６ｂ下部近傍には電気炉３
０で加熱される燃焼室（流動床燃焼室）３２には流動材
容器３３内の例えば硅砂が弁３３ａ、供給管３３ｂを介
して燃焼室３２内に投入され、図示されていないＮ2 ガ
ス等不活性ガス供給装置及び弁３４及び流量計３４ａを
介してＮ2 ガスが供給され、流動床を形成している。On the other hand, in the vicinity of the lower part of the collection container 06b, an electric furnace 3 is provided.
In a combustion chamber (fluidized bed combustion chamber) 32 heated at 0, for example, silica sand in a fluid material container 33 is introduced into the combustion chamber 32 through a valve 33a and a supply pipe 33b, and N 2 gas or the like not shown N 2 gas is supplied through the inert gas supply device, the valve 34, and the flow meter 34a to form a fluidized bed.
【００２８】上記のように一定温度例えば８００〜９０
０℃に加熱された流動床内に弁０５ｆ及び定量供給器２
０を介して捕集容器０６ｂ内のダストを天秤等の計量計
２０ａにて重量計測後一定量投入することによりダスト
は還元雰囲気内で加熱され、ダスト中のＣａＣＯ3 、あ
るいはＣａＳＯ4 は前記式による反応を呈し、安定した
ＣａＯとなるが、この際、燃焼室３２からの排ガスは弁
２２ａを開いて大気放出され、かつ一部の排ガスを抽気
し、ＣＯ2 計２６、ＳＯ2 計２７にてガス濃度を測定後
反応が停止した時点で、弁３４を閉め、図示されていな
い空気供給装置及び弁２５、流量計２５ａを介して空気
を投入し、酸化雰囲気にて未燃分を燃焼させ、ＣＯ2 計
２６及びＣＯ計２８にて排ガス中のＣＯ2 及びＣＯ濃度
を測定し、排ガス中のＣＯ2 ，ＣＯの炭素成分量から灰
中未燃分を求める。As described above, a constant temperature, for example, 800 to 90
In the fluidized bed heated to 0 ° C, a valve 05f and a constant quantity feeder 2
The dust in the collection container 06b is heated in a reducing atmosphere by measuring the weight of the dust in the collection container 06b with a weighing machine 20a such as a balance through 0, and CaCO 3 or CaSO 4 in the dust is expressed by the above formula. However, the exhaust gas from the combustion chamber 32 is released into the atmosphere by opening the valve 22a, and a part of the exhaust gas is extracted to the CO 2 meter 26 and the SO 2 meter 27. At the time when the reaction is stopped after measuring the gas concentration, the valve 34 is closed, air is introduced through the air supply device (not shown), the valve 25, and the flow meter 25a to burn unburned components in the oxidizing atmosphere. , CO 2 and CO concentration in the exhaust gas was measured by CO 2 meter 26 and CO meter 28 obtains the ash unburned carbon component amount of CO 2, CO in the exhaust gas.
【００２９】算出式、反応式は以下の通りである。The calculation formula and reaction formula are as follows.
【００３０】Ｃ＋Ｏ2 →ＣＯ2 Ｃ＋（１／２）Ｏ2 →ＣＯ なお２９は流動材抜き出し弁である。C + O 2 → CO 2 C + (1/2) O 2 → CO 29 is a fluid material discharge valve.
【００３１】（第２実施例）請求項２の発明に係る第２
実施例を図２により説明する。(Second Embodiment) Second embodiment according to the invention of claim 2
An embodiment will be described with reference to FIG.
【００３２】図２は本実施例の系統図で、１１は弁１１
ａより投入される酸素と共に酸化雰囲気場を形成する燃
焼室である。その他、従来例の図５と同様部材には同符
号が付してある。FIG. 2 is a system diagram of this embodiment, in which 11 is a valve 11.
It is a combustion chamber that forms an oxidizing atmosphere field together with oxygen introduced from a. Other than that, the same members as in FIG. 5 of the conventional example are denoted by the same reference numerals.
【００３３】次に付設部材等の説明と併わせ上記構成の
作用について説明する。Next, the operation of the above configuration will be described together with the description of the attached members and the like.
【００３４】従来例と同様の手順にて抽気された排ガス
０１はＪＩＳ法にもとずく灼熱温度に一定加熱されてい
る燃焼室１１へ導入される。一方燃焼室１１内へは図示
されていない酸素供給系から弁１１ａ及び流量計１１ｂ
を介して酸素の一定量が投入され、酸化雰囲気状態にあ
り、抽気排ガス０１のダスト中の未燃分は完全燃焼した
後、ガスクーラ１２、ダスト捕集器０４、流量計２１、
流量制御弁２２、減音器２３を介して排ガスのみ連続し
て大気放出される。The exhaust gas 01 extracted by the same procedure as in the conventional example is introduced into the combustion chamber 11 which is heated to a constant burning temperature according to the JIS method. On the other hand, a valve 11a and a flow meter 11b are supplied to the combustion chamber 11 from an oxygen supply system (not shown).
A certain amount of oxygen is introduced through the exhaust gas in an oxidizing atmosphere state, and the unburned matter in the dust of the extracted exhaust gas 01 is completely burned, and then the gas cooler 12, the dust collector 04, the flow meter 21,
Only the exhaust gas is continuously discharged to the atmosphere via the flow control valve 22 and the noise reducer 23.
【００３５】一方、燃焼室１１手前には導入される排ガ
ス中のＯ2 分圧計測装置１３ａ及びＣＯ分圧計測装置１
３ｂが介装され、燃焼室１１出口にもＯ2 分圧計測装置
１４ａ及びＣＯ分圧計測装置１４ｂが設置されている。On the other hand, before the combustion chamber 11, the O 2 partial pressure measuring device 13a and the CO partial pressure measuring device 1 in the exhaust gas introduced are introduced.
3b is interposed, and an O 2 partial pressure measuring device 14a and a CO partial pressure measuring device 14b are also installed at the outlet of the combustion chamber 11.
【００３６】従って燃焼室１１内にてダスト中の未燃分
はＣ＋Ｏ2 →ＣＯ2 反応にて燃焼を完結し、燃焼室１１
内に導入される排ガス量、Ｏ2 量、ＣＯ2 量、燃焼室１
１へ強制導入されるＯ2 分圧、Ｏ2 量及び燃焼室１１出
口のＯ2 量、ＣＯ2 量のマスバランスから未燃分の燃焼
に消費されたＯ2 量が特定され、その量から未燃分量が
自動的かつ連続的に算出される。Therefore, the unburned matter in the dust in the combustion chamber 11 completes the combustion by the reaction of C + O 2 → CO 2 and the combustion chamber 11
Exhaust gas amount, O 2 amount, CO 2 amount, combustion chamber 1
Force the introduced O 2 partial pressure to 1, the amount of O 2 and O 2 of the combustion chamber 11 outlet, the amount of O 2 consumed in the combustion of unburned from the mass balance of the CO 2 amount is identified from the amount The unburned amount is calculated automatically and continuously.
【００３７】なお、ダスト捕集器０４で捕集されたダス
トは弁０５ａを介して捕集容器０６ａに一旦捕集され、
図示されていない加圧ガス供給装置及び弁０５ｆを介し
て捕集容器０６ｂ内圧はほぼ同一圧の状態にて均圧弁０
５ｄを開き、捕集容器０６ａ及び０６ｂを同一圧とした
後、弁０５ｂを開き、捕集容器０６ａ内のダストを０６
ｂに移動させ、その後、減圧弁０５ｅ及び消音器３５を
介して捕集容器０６ｂ内を大気圧下まで減圧後、弁０５
ｇを開き系外へ排出される、いわゆるロックホッパシス
テム方式にてダストを加圧下から大気圧環境下に移行で
きるようになっている。The dust collected by the dust collector 04 is temporarily collected in the collection container 06a via the valve 05a.
The pressure inside the collection container 06b is kept at substantially the same pressure via a pressurized gas supply device and a valve 05f (not shown).
5d is opened and the pressures of the collection containers 06a and 06b are set to the same pressure, and then the valve 05b is opened to remove dust in the collection container 06a.
b, and after that, the pressure inside the collection container 06b is reduced to atmospheric pressure via the pressure reducing valve 05e and the silencer 35, and then the valve 05
The so-called lock hopper system, in which g is opened and discharged to the outside of the system, allows dust to be transferred from under pressure to under atmospheric pressure.
【００３８】以上のように未燃分は連続的に燃焼を完結
し、またＯ2 消費量は燃焼未燃分量に比例して連続的に
変化計測しうるので加圧下状態、即ち、サンプリング状
態にて未燃分を連続的に評価できる。As described above, the unburned component completes the combustion continuously, and the O 2 consumption amount can be continuously changed and measured in proportion to the unburned component amount. The unburned content can be evaluated continuously.
【００３９】（第３実施例）請求項３の発明に係る第３
実施例を図３により説明する。(Third Embodiment) The third embodiment according to the invention of claim 3
An embodiment will be described with reference to FIG.
【００４０】図３は本実施例の系統図で、３９は垂直容
器３６内を落下するダストの誘電率を測定するための誘
電率測定装置である。FIG. 3 is a system diagram of this embodiment, and 39 is a dielectric constant measuring device for measuring the dielectric constant of dust falling in the vertical container 36.
【００４１】次に付設部材等の説明と併わせ上記構成の
作用について説明する。Next, the operation of the above configuration will be described together with the description of the attached members and the like.
【００４２】ダスト捕集器０４で捕集された未燃分を含
むダストは弁２９ａを介して垂直容器３６に導入され、
垂直容器３６下部の弁２９ｂ、冷却器３７及び定量供給
装置３８を介して一定量を連続的に前記ロックホッパシ
ステムに移動、系外へ排出される。垂直容器３６内には
ダストの静電容量、換言すれば誘電率を計る誘電率測定
装置３９が配置されており、落下してゆくダストの未燃
分に比例して誘電率は変化するため、垂直容器３６を移
行するダスト量と誘電率とからダスト未燃分量を連続的
に評価できる。The dust containing unburned matter collected by the dust collector 04 is introduced into the vertical container 36 through the valve 29a,
A certain amount is continuously moved to the lock hopper system via the valve 29b at the bottom of the vertical container 36, the cooler 37, and the fixed amount supply device 38, and discharged out of the system. In the vertical container 36, a capacitance of dust, in other words, a dielectric constant measuring device 39 for measuring the dielectric constant is arranged, and the dielectric constant changes in proportion to the unburned dust falling, The amount of unburned dust can be continuously evaluated from the amount of dust transferred in the vertical container 36 and the dielectric constant.
【００４３】なおダスト捕集器０４からの時間当りのダ
スト量が一定量をオーバする際にはオーバ分抜き出し機
構、容器４０、弁２９ｃ，２９ｄ，２９ｅ及び消音器３
５を使って減圧後、系外へ連続的に排出し、垂直容器３
６内のダスト量レベル、及び下方への流下速度を常に一
定とする。即ち、ダスト嵩密度を一定に調節する。When the amount of dust per hour from the dust collector 04 exceeds a certain amount, a mechanism for extracting the excess amount, the container 40, the valves 29c, 29d, 29e and the silencer 3 are provided.
After depressurizing using 5, continuously discharge out of the system,
The dust amount level in 6 and the downward flow velocity are always constant. That is, the dust bulk density is adjusted to be constant.
【００４４】上記のように本実施例ではダストのサンプ
リングの加圧下にて連続的かつアルカリ土類金属の加熱
燃焼による分解を発生させることなく、未燃分を評価す
ることができる。As described above, in the present embodiment, the unburned content can be evaluated under the pressure of dust sampling continuously and without causing decomposition by heating and burning of the alkaline earth metal.
【００４５】（第４実施例）請求項４の発明に係る第４
実施例を図４により説明する。(Fourth Embodiment) The fourth invention according to claim 4
An embodiment will be described with reference to FIG.
【００４６】図４は本実施例の系統図で、１３ａ，１４
ａはそれぞれ燃焼室１１の入口と出口とに介装されたＯ
2 分圧計測装置、１３ｂ，１４ｂは同じくＣＯ分圧計測
装置である。FIG. 4 is a system diagram of this embodiment.
a is an O provided at the inlet and the outlet of the combustion chamber 11, respectively.
The two partial pressure measuring devices 13b and 14b are also CO partial pressure measuring devices.
【００４７】次に付設部材等の説明と併わせ上記構成の
作用について説明する。Next, the operation of the above configuration will be described together with the description of the attached members and the like.
【００４８】ダスト捕集器０４で捕集された未燃分を含
むダストは弁０５ａ，０５ｂ及び捕集容器０６ａを介し
てインゼクタ４１へ導入され、図示されていない酸素供
給系からの酸素を流量計１１ｂ及び弁１１ａを経由して
送気し、燃焼室１１内にて強制酸化雰囲気下にて未燃分
は燃焼完結し、Ｏ2 分圧、ＣＯ2 分圧測定器１５ａ及び
１５ｂにて燃焼室１１出口の排ガス中、Ｏ2 ，ＣＯ2 濃
度を測定後、ダスト捕集器４２にてダストが捕集され、
弁４２ａ，４２ｂ及び捕集容器４３を介して減圧、系外
へ排出する。一方、排ガスは弁４２ｂ及び消音器３５を
経て大気へ自動放出される。The dust containing unburned matter collected by the dust collector 04 is introduced into the injector 41 through the valves 05a, 05b and the collection container 06a, and the oxygen from the oxygen supply system (not shown) is flown. Air is fed through the total 11b and the valve 11a, the unburned components are completely combusted in the combustion chamber 11 under the forced oxidizing atmosphere, and the O 2 partial pressure and CO 2 partial pressure measuring instruments 15a and 15b are used for combustion. After measuring the O 2 and CO 2 concentrations in the exhaust gas at the outlet of the chamber 11, dust is collected by the dust collector 42,
The pressure is reduced through the valves 42a and 42b and the collection container 43, and then discharged outside the system. On the other hand, the exhaust gas is automatically discharged to the atmosphere through the valve 42b and the silencer 35.
【００４９】本実施例の特徴は、未燃分測定方法原理は
前記第２実施例と同じくＯ2 ，ＣＯ 2 量のマスバランス
から未燃分を評価するものであるが、マルチサンプリン
グプローグ０３から抽気される排ガス中のダスト量及び
未燃分量が少なく、未燃分燃焼に消費される酸素量が僅
少の場合には測定精度が低下する傾向にあり、ある一定
量のダスト量を確保する必要がある場合に有効なもので
あり、いささか間けつ手法の併用もやむなしの場合に好
適である。The feature of this embodiment is that the principle of the unburned matter measuring method is
O as in the second embodiment2, CO 2Mass balance
Is to evaluate unburned content from
The amount of dust in the exhaust gas extracted from Guplog 03 and
The amount of unburned fuel is small and the amount of oxygen consumed for burning unburned fuel is small.
If the amount is small, the measurement accuracy tends to decrease, and
It is effective when it is necessary to secure a large amount of dust.
Yes, it is preferable when it is necessary to use a combination of intermittent methods.
It is suitable.
【００５０】[0050]
【発明の効果】本発明は上記のように構成されるので次
の効果を有する。The present invention has the following effects because it is configured as described above.
【００５１】（１）．請求項１の発明にあってはダスト
捕集手段によって連続的に捕集したダストを燃焼室の還
元雰囲気加熱場で加熱、ダスト中のたとえばＣａＣＯ3
等からＯ2 を気体として抜き、ＣａＯ等の安定した未燃
分とし、次いで酸化雰囲気場で燃焼し、その排ガスのＣ
Ｏ及びＣＯ2 等をＣＯ及びＣＯ2 測定手段によって計測
することにより正確にかつ、連続的に燃焼ガス中の未燃
分を知ることができるため、このデータをもとにボイラ
等の燃焼効率を最高に維持できる。(1). In the invention of claim 1, the dust continuously collected by the dust collecting means is heated in the reducing atmosphere heating field of the combustion chamber, and for example, CaCO 3 in the dust is heated.
Etc. to remove O 2 as a gas to make a stable unburned content such as CaO, and then burn it in an oxidizing atmosphere field to remove C from the exhaust gas.
By measuring O and CO 2 etc. by CO and CO 2 measuring means, it is possible to know the unburned content in the combustion gas accurately and continuously. Therefore, based on this data, the combustion efficiency of the boiler etc. You can maintain the best.
【００５２】（２）．従って、また、ＣａＣＯ3 等の脱
硫材を使用することによる燃焼効率低下を完全に回避で
きるため、大気公害を全く発生しない。(2). Therefore, the deterioration of combustion efficiency due to the use of a desulfurizing material such as CaCO 3 can be completely avoided, so that no atmospheric pollution occurs.
【００５３】（３）．請求項（２）の発明にあっては電
気炉等、一定温度に保持した空間通路に燃焼ガスをガス
誘導手段によって連続的に導き、別途、酸素を供給して
燃焼室で燃焼する行程の前後でＯ2 ，ＣＯ2 濃度検出手
段によりＯ2 ＣＯ2 を計測することにより、その含有差
が検出され、その結果、未燃分を精確にかつ、連続的に
知ることができるため、上記（１），（２）と同様の効
果を得られる。(3). In the invention of claim (2), before and after the process of continuously introducing the combustion gas into the space passage maintained at a constant temperature, such as an electric furnace, by the gas guide means and separately supplying oxygen to perform combustion in the combustion chamber. in by measuring O 2 CO 2 by O 2, CO 2 concentration detector, the content difference is detected, the result, and the unburned accurately, it is possible to know in continuous, the (1 ) And (2) can be obtained.
【００５４】（４）．請求項（３）の発明にあっては燃
焼ガスの一部を連続的にダスト捕集手段により捕集、連
続通過手段を通過させながら静電容量計測手段により、
ダスト量の未燃分に比例する誘電率を計測することによ
り、未燃分を精確にかつ、連続的に知ることができるた
め、上記（１），（２）と同様の効果が得られる。(4). In the invention of claim (3), a part of the combustion gas is continuously collected by the dust collecting means and passed through the continuous passing means by the capacitance measuring means,
By measuring the permittivity proportional to the unburned content of the dust amount, the unburned content can be accurately and continuously known, and therefore the same effects as (1) and (2) above can be obtained.
【００５５】（５）．従って、また、特段の還元雰囲気
場、酸化雰囲気場を有する燃焼室等を必要とせず、か
つ、それらに基づく処理行程も不要となるため、設備費
が低減し、かつ、未燃分評価の応答性（迅速性）が高ま
る。(5). Therefore, no special reducing atmosphere field, a combustion chamber having an oxidizing atmosphere field, etc. are required, and a processing process based on them is not required, so that the equipment cost is reduced and the response of the unburned content evaluation is reduced. Sex (quickness) increases.
【００５６】（６）．請求項（４）の発明にあっては燃
焼ガス中より捕集したダストを、連続通過手段を通過さ
せながらＯ2 ，ＣＯ2 ，ＣＯ等濃度検出手段により検出
するので上記（３）とほぼ同様の効果が得られる。(6). In the invention of claim (4), the dust collected from the combustion gas is detected by the O 2 , CO 2 , CO etc. concentration detecting means while passing through the continuous passing means, so that it is almost the same as the above (3). The effect of is obtained.
【図１】本発明の第１実施例に係る灰中未燃分計測装置
の系統図、FIG. 1 is a system diagram of a device for measuring unburned matter in ash according to a first embodiment of the present invention,
【図２】本発明の第２実施例に係る灰中未燃分計測装置
の系統図、FIG. 2 is a system diagram of a device for measuring unburned matter in ash according to a second embodiment of the present invention,
【図３】本発明の第３実施例に係る灰中未燃分計測装置
の系統図、FIG. 3 is a system diagram of a device for measuring unburned matter in ash according to a third embodiment of the present invention,
【図４】本発明の第４実施例に係る灰中未燃分計測装置
の系統図、FIG. 4 is a system diagram of a device for measuring unburned ash content according to a fourth embodiment of the present invention;
【図５】従来の灰中未燃分計測装置の系統図である。FIG. 5 is a system diagram of a conventional device for measuring unburned content in ash.
０１ 燃焼排ガス ０４ ダスト捕集器 ０６ａ，０６ｂ 捕集容器 １１ 燃焼室 １１ｂ 流量計 １２ ガスクーラ １３ａ，１４ａ Ｏ2 分圧計測装置 １３ｂ，１４ｂ ＣＯ分圧計測装置 １５ａ Ｏ2 分圧測定器 １５ｂ ＣＯ2 分圧測定器 ２０ 定量供給器 ２０ａ 計量計 ２５ａ 流量計 ２６ ＣＯ2 計 ２７ ＳＯ2 計 ２８ ＣＯ計 ３０ 電気炉 ３２ 燃焼室 ３３ 流動材容器 ３３ｂ 供給管 ３４ａ 流量計 ３６ 垂直容器 ３７ 冷却器 ３８ 定量供給装置 ３９ 誘電率測定装置 ４０ 容器 ４１ インゼクタ ４２ ダスト捕集器 ４３ 捕集器01 Combustion exhaust gas 04 Dust collector 06a, 06b Collection container 11 Combustion chamber 11b Flow meter 12 Gas cooler 13a, 14a O 2 partial pressure measuring device 13b, 14b CO partial pressure measuring device 15a O 2 partial pressure measuring device 15b CO 2 min Pressure measuring device 20 Constant supply device 20a Metering device 25a Flow meter 26 CO 2 meter 27 SO 2 meter 28 CO meter 30 Electric furnace 32 Combustion chamber 33 Fluid material container 33b Supply pipe 34a Flow meter 36 Vertical container 37 Cooler 38 Quantitative supply device 39 Dielectric constant measuring device 40 Container 41 Injector 42 Dust collector 43 Collector
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成７年５月２日[Submission date] May 2, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項４[Name of item to be corrected] Claim 4
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００９】一方、排ガスサンプル、減圧、試料皿への
捕集、初期計量、灼熱減量及び減量計測、と一つの未燃
分計測値を取得するのには数多くのプロセスを順次実施
してゆく必要があり、サンプリング開始後、未燃分結果
が出るまでに略３０分以上の時間を要し、また、バッチ
式計測法につき、未燃分の時間的な増減変化を評価する
ことが困難という問題があった。On the other hand, it is necessary to sequentially carry out a number of processes in order to obtain one unburned matter measurement value, such as exhaust gas sample, decompression, collection in a sample dish, initial measurement, ignition loss and weight loss measurement. There is, after sampling started, it takes approximately 30 minutes or more until the unburnt result comes out, also, per batch type measuring method, it is difficult to evaluate the temporal change in increase and decrease of the unburned There was a problem.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１５[Name of item to be corrected] 0015
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１５】（４）．固体燃料等の燃焼ガスの一部を連
続的に抽気し、そのガス中のダストを捕集するダスト捕
集手段と、同ダスト捕集手段の捕集したダストの連続通
過手段と、同連続通過手段を通過するダストのＯ2 ，Ｃ
Ｏ2 濃度検出手段とを具備してなることを特徴とする灰
中未燃分計測装置。(4). Dust collecting means for continuously extracting a part of combustion gas such as solid fuel and collecting dust in the gas, continuous passing means for the dust collected by the dust collecting means, and continuous passing O 2 , C of dust passing through the means
An apparatus for measuring unburned content in ash, comprising an O 2 concentration detecting means.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２０[Correction target item name] 0020
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２０】（４）．上記（４）の構成にあっては
Ｏ2 ，ＣＯ2 濃度検出手段を設けるので、Ｏ2 ，ＣＯ2
濃度検出手段によりガス濃度を検出すれば、連続的に未
燃分量を知ることができる。(4). In the configuration of (4) above, since O 2 and CO 2 concentration detecting means are provided, O 2 and CO 2
If the gas concentration is detected by the concentration detecting means, the unburned amount can be continuously known.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００４６[Correction target item name] 0046
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００４６】図４は本実施例の系統図で、１５ａは燃焼
室１１の出口に介装されたＯ2 分圧計測装置、１５ｂは
ＣＯ 2 分圧計測装置である。FIG. 4 is a system diagram of this embodiment, in which 15a is an O 2 partial pressure measuring device provided at the outlet of the combustion chamber 11, and 15b is a CO 2 partial pressure measuring device.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００５２[Correction target item name] 0052
【補正方法】削除[Correction method] Delete
【手続補正７】[Procedure Amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００５６[Correction target item name] 0056
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００５６】（６）．請求項（４）の発明にあっては燃
焼ガス中より捕集したダストを、連続通過手段を通過さ
せながらＯ2 ，ＣＯ2 濃度検出手段により検出するので
上記（３）とほぼ同様の効果が得られる。(6). Dust In the invention, which was collected from the combustion gas according to claim (4), is substantially the same effect as the above (3) and detects the O 2, CO 2 concentration detector while passing a continuous passage means can get.
Claims (4)
抽気し燃焼ガス中の含じんダストを捕集するダスト捕集
手段と、流動床燃焼方式による還元雰囲気加熱場及び酸
化雰囲気場を有する燃焼室と、排ガス中のＣＯ及びＣＯ
2 測定手段とを具備してなることを特徴とする灰中未燃
分計測装置。1. A dust collecting means for continuously extracting a part of a combustion gas such as a solid fuel to collect dust-containing dust in the combustion gas, a reducing atmosphere heating field and an oxidizing atmosphere field by a fluidized bed combustion system. With a combustion chamber, and CO and CO in the exhaust gas
(2) An unburned carbon content measuring device in ash, comprising: a measuring means.
抽気しその一部又は全量を電気炉等一定温度に保持した
空間通路に導くガス誘導手段と、別途酸素を投入して形
成される酸化雰囲気場を有する燃焼室と、Ｏ2 ，ＣＯ2
濃度検出手段と、燃焼ガス中に含まれるダストの捕集手
段と、ダスト環境を大気圧場とする減圧手段とを具備し
てなることを特徴とする灰中未燃分計測装置。2. A gas guide means for continuously extracting a part of a combustion gas such as solid fuel and introducing a part or the whole amount of the combustion gas into a space passage maintained at a constant temperature such as an electric furnace, and oxygen separately charged to form the gas. A combustion chamber having an oxidizing atmosphere field, O 2 , CO 2
An ash unburnt content measuring device comprising: a concentration detecting means, a dust collecting means for collecting dust contained in combustion gas, and a decompressing means for making a dust environment an atmospheric pressure field.
抽気し、そのガス中のダストを捕集するダスト捕集手段
と、同ダスト捕集手段の捕集したダストの連続通過手段
と、同連続通過手段を通過するダストの静電容量を計測
する静電容量計測手段とを具備してなることを特徴とす
る灰中未燃分計測装置。3. A dust collecting means for continuously extracting a part of a combustion gas such as solid fuel and collecting dust in the gas, and a continuous passage means for the dust collected by the dust collecting means. And an electrostatic capacity measuring means for measuring the electrostatic capacity of dust passing through the continuous passing means.
いて、静電容量計測手段に代えダストのＯ2 ，ＣＯ2 ，
ＣＯ等濃度検出手段を具備してなることを特徴とする灰
中未燃分計測装置。4. The ash unburnt content measuring device according to claim 3, wherein the capacitance measuring means is replaced by dust O 2 , CO 2 ,
An apparatus for measuring unburned ash content, comprising CO concentration detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29278794A JPH08145978A (en) | 1994-11-28 | 1994-11-28 | Measuring instrument of un-burned content in ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29278794A JPH08145978A (en) | 1994-11-28 | 1994-11-28 | Measuring instrument of un-burned content in ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08145978A true JPH08145978A (en) | 1996-06-07 |
Family
ID=17786337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29278794A Withdrawn JPH08145978A (en) | 1994-11-28 | 1994-11-28 | Measuring instrument of un-burned content in ash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08145978A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988152A (en) * | 2010-08-31 | 2011-03-23 | 吕军 | Method for detecting cleaness of furnace gas in continuous annealing furnace |
| CN101993996A (en) * | 2010-08-31 | 2011-03-30 | 吕军 | System for realizing automatic and continuous cleanness detection of multiple sample points |
| CN106290701A (en) * | 2016-08-08 | 2017-01-04 | 西安电子科技大学 | A kind of metal fuel efficiency of combustion method of testing |
| WO2020041944A1 (en) * | 2018-08-27 | 2020-03-05 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle positioning system, handheld rtk positioning device, and sealing quick disassembling structure |
-
1994
- 1994-11-28 JP JP29278794A patent/JPH08145978A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988152A (en) * | 2010-08-31 | 2011-03-23 | 吕军 | Method for detecting cleaness of furnace gas in continuous annealing furnace |
| CN101993996A (en) * | 2010-08-31 | 2011-03-30 | 吕军 | System for realizing automatic and continuous cleanness detection of multiple sample points |
| CN106290701A (en) * | 2016-08-08 | 2017-01-04 | 西安电子科技大学 | A kind of metal fuel efficiency of combustion method of testing |
| WO2020041944A1 (en) * | 2018-08-27 | 2020-03-05 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle positioning system, handheld rtk positioning device, and sealing quick disassembling structure |
| CN110892234A (en) * | 2018-08-27 | 2020-03-17 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle positioning system, handheld RTK positioner, sealed rapid disassembly structure |
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