JPH03221830A - Instrument for measuring unburned component in ash - Google Patents
Instrument for measuring unburned component in ashInfo
- Publication number
- JPH03221830A JPH03221830A JP1487090A JP1487090A JPH03221830A JP H03221830 A JPH03221830 A JP H03221830A JP 1487090 A JP1487090 A JP 1487090A JP 1487090 A JP1487090 A JP 1487090A JP H03221830 A JPH03221830 A JP H03221830A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- dust
- return line
- duct
- hopper
- 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
- 239000000428 dust Substances 0.000 claims abstract description 49
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000003189 isokinetic effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は排ガスダクト内を流れる排ガス中のダストを採
取しそのダスト量を測定する装置に係り、特に煙道（排
ガスダクト）中の排ガスに含まれているダストを採取し
、そのダスト量を測定するに好適な灰中未燃分測定装置
に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for collecting dust in exhaust gas flowing in an exhaust gas duct and measuring the amount of dust, and particularly for collecting dust in exhaust gas flowing in an exhaust gas duct and measuring the amount of dust. The present invention relates to an apparatus for measuring unburned content in ash suitable for collecting dust contained therein and measuring the amount of dust.
［従来の技術］
ボイラなどの燃焼装置において、煙道排ガス中の未燃分
を計測することは、ボイラの燃焼効率、ひいてはボイラ
効率を把握するために重要なことであり、通常、排ガス
ダクト内を通過する排ガスに含まれるダスト中の未燃カ
ーボン量を計測して未燃分量を把握している。このダス
トを採取する方法としては、日本工業規格ＪＩＳ−８８
０８（排ガス中のダスト濃度の測定方法）の規定がある
。[Prior art] In combustion equipment such as boilers, it is important to measure the unburned content in the flue gas in order to understand the combustion efficiency of the boiler and ultimately the boiler efficiency. The amount of unburned carbon is determined by measuring the amount of unburned carbon in the dust contained in the exhaust gas that passes through. The method for collecting this dust is based on Japanese Industrial Standard JIS-88.
08 (method for measuring dust concentration in exhaust gas).
従来技術の排ガス中の灰中未燃分測定装置の概略系統図
を第２図に示す。FIG. 2 shows a schematic system diagram of a conventional device for measuring unburned content in ash in exhaust gas.
第２図において、１はダストを含んだ排ガスが流れる排
ガスダクト、２は排ガスダクト１内に配置され、試料を
採取するサンプリングノズル、３は遮断弁、４はサンプ
リングライン、５は採取した試料から排ガスとダストに
分離する捕集サイクロン、６はダスト中の未燃分を測定
する未燃分測定器、７は定量フィーダ、８はダスト戻り
ライン、９はダスト戻りライン８の搬送用空気管、１０
は排ガス戻りライン、１１は吸引ブロワ、１２はダスト
と排ガスの戻りライン、工３はオーバーフローラインで
ある
このような構造において、排ガスダクト１のサンプリン
グノズル２で採取された試料は、サンプリングノズル２
、遮断弁３、サンプリングライン４へ吸引ブロワ１１で
吸引し、捕集サイクロン５でダス１−と排ガスに分離さ
れる。In Fig. 2, 1 is an exhaust gas duct through which exhaust gas containing dust flows, 2 is a sampling nozzle arranged in the exhaust gas duct 1 to collect a sample, 3 is a shutoff valve, 4 is a sampling line, and 5 is a sampling nozzle from which a sample is collected. A collection cyclone that separates exhaust gas and dust, 6 an unburned content measuring device for measuring unburned content in dust, 7 a quantitative feeder, 8 a dust return line, 9 a conveying air pipe for the dust return line 8, 10
is an exhaust gas return line, 11 is a suction blower, 12 is a return line for dust and exhaust gas, and No. 3 is an overflow line. In this structure, the sample collected by the sampling nozzle 2 of the exhaust gas duct 1 is
, a shutoff valve 3, and a sampling line 4 using a suction blower 11, and a collection cyclone 5 separates it into dust 1- and exhaust gas.
捕集サイクロン５で分離されたダストは未燃分測定装置
６で未燃カーボン量が測定され、定量フィーダ７、ダス
ト戻りライン８を経て、搬送用空気管９からの搬送用空
気によって戻りライン１２から排ガスダクト１へ戻す。The amount of unburned carbon in the dust separated by the collection cyclone 5 is measured by an unburned content measuring device 6, and the dust passes through a quantitative feeder 7 and a dust return line 8, and then is transferred to a return line 12 by transport air from a transport air pipe 9. and return to exhaust gas duct 1.
一方、捕集サイクロン５で分離された排ガスは排ガス戻
りライン１０、吸引ブロワ１１、戻りラインエ２を経て
排ガスダクト↓へ戻す。On the other hand, the exhaust gas separated by the collection cyclone 5 is returned to the exhaust gas duct↓ via an exhaust gas return line 10, a suction blower 11, and a return line 2.
［発明ｐ＜解決しようとする課題］
従来技術の灰中未燃分測定装置では未燃カーボン測定機
の′ダスト輸送は搬送用空気管９からの搬送用空気を必
要とするために、別系統の搬送用空気管９を配置する必
要がある。[Invention P<Problem to be Solved] In the conventional unburned carbon content measuring device in ash, since the dust transport of the unburned carbon measuring device requires transporting air from the transporting air pipe 9, a separate system is used. It is necessary to arrange a conveying air pipe 9.
また、排ガス戻りライン１０には風量調整機構がなくボ
イラ負荷等の変化によって排ガスダク１−１内の流速が
変化した場合、等速吸引が困細な状態になり、排ガス発
生源の燃焼条件や排ガス性状が変化するとサンプリング
の代表点が変ることがあり、正確な測定ができない欠点
があった。In addition, the exhaust gas return line 10 does not have an air volume adjustment mechanism, so if the flow velocity in the exhaust gas duct 1-1 changes due to changes in the boiler load, etc., uniform suction becomes difficult, and the combustion conditions of the exhaust gas source If the exhaust gas properties change, the representative sampling point may change, which has the disadvantage that accurate measurements cannot be made.
本発明はかかる従来の欠点を解消しようとするもので、
その目的とするところは、排ガスダク１〜内の流速が変
化しても等速吸引をすることができ、しかもダスト搬送
用に排ガス戻りラインの排ガスを用いることができる灰
中未燃分測定装置を得ようとするものである。The present invention aims to eliminate such conventional drawbacks,
The purpose of this is a device for measuring unburned content in ash that can perform constant suction even if the flow velocity in the exhaust gas duct 1 changes, and that can also use the exhaust gas from the exhaust gas return line for dust transport. It is an attempt to obtain.
［課題を解決するための手段］
本発明は前述の目的を達成するために、ダスト戻りライ
ンの途中にダストでシールするシール機構を設け、かつ
、吸引ブロワの上流に風ｉ調整機構を配置することによ
って解決される。[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a sealing mechanism for sealing with dust in the middle of the dust return line, and arranges an air adjustment mechanism upstream of the suction blower. This is solved by
［作用コ
ダスト戻りラインと戻りラインはシール機構によって圧
力的に遮断され圧力差のある戻りラインへダストは排ガ
スによって搬送される。[Working The dust return line and the return line are pressure-blocked by a sealing mechanism, and the dust is transported by the exhaust gas to the return line where there is a pressure difference.
また、排ガスのサンプリングは風量調整機構によって調
整されるので排ガスダクトの風量が変化しても等速吸引
されるので、測定誤差がなくなる。Furthermore, since sampling of the exhaust gas is adjusted by the air volume adjustment mechanism, even if the air volume of the exhaust gas duct changes, it is sucked in at a constant velocity, eliminating measurement errors.
［実施例］ 以下、本発明の実施例を図面を用いて説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例に係る灰中未燃分測定装置の概
略系統図である。FIG. 1 is a schematic system diagram of an apparatus for measuring unburned content in ash according to an embodiment of the present invention.
第１図において符号１から符号１３は従来のものと同一
のものを示す。In FIG. 1, numerals 1 to 13 indicate the same parts as the conventional one.
１４は灰ホッパ、１５はホッパ、１６はダスト戻りライ
ン８の途中に設けたシールフィーダ（シール機構）、１
７は吸引ブロワ１１の入口に設けた風量調整弁（風量調
整機構）である。14 is an ash hopper, 15 is a hopper, 16 is a seal feeder (seal mechanism) provided in the middle of the dust return line 8, 1
7 is an air volume adjustment valve (air volume adjustment mechanism) provided at the inlet of the suction blower 11.
このような構造において、石炭燃焼による排ガスは、図
示していないボイラ本体から排ガスダクト上内を通り、
排ガス中のダストは、排ガスダクト１に配置されたサン
プリングノズル２より排ガスと共にサンプリングライン
４に吸引され捕集サイクロン５へ至る。捕集サイクロン
５ではダストと排ガスに分離され、捕集されたダストは
灰ホッパ１４、未燃分測定器６、定量フィーダ７を経て
ホッパ１５に搬送される。ホッパ１５内のダストはシー
ルフィーダ１６でダスト戻りライン８をシールし、戻り
ライン１２へ送られた後、吸引ブロワ１１の吐出流によ
り捕集サイクロン５で分離された排ガス戻りライン１０
の排ガスによって気流搬送され排ガスダクト↓へ戻され
る。In such a structure, exhaust gas from coal combustion passes from the boiler body (not shown) through the exhaust gas duct,
Dust in the exhaust gas is sucked together with the exhaust gas into a sampling line 4 through a sampling nozzle 2 arranged in an exhaust gas duct 1 and reaches a collection cyclone 5 . In the collection cyclone 5, the dust and exhaust gas are separated, and the collected dust is conveyed to the hopper 15 via the ash hopper 14, the unburned content meter 6, and the quantitative feeder 7. The dust in the hopper 15 is sealed with the dust return line 8 by the seal feeder 16, and after being sent to the return line 12, it is separated by the collection cyclone 5 by the discharge flow of the suction blower 11 into the exhaust gas return line 10.
The exhaust gas is transported by airflow and returned to the exhaust gas duct↓.
排ガスの吸引は、捕集サイクロン５に接続された吸引ブ
ロワ１１によって行ない、風量調整のために、この排ガ
ス戻りライン１０に風量調整弁１７を設置する。The exhaust gas is sucked by a suction blower 11 connected to the collection cyclone 5, and an air volume adjustment valve 17 is installed in the exhaust gas return line 10 to adjust the air volume.
サンプリングノズル２より吸引された排ガスは捕集サイ
クロン５でダストとガスに分離され、ダストは灰ホッパ
１４へ捕集される。灰ホッパ１４から未燃分測定器６へ
の搬送は、定量フィーダ７でコントロールされ定格量搬
送された後、後流のホッパ１５へ貯蔵される。尚、灰ホ
ッパ１４の詰りを防止するために、灰ホッパ１４の上部
に、オーバーフローライン１３が取り付けである。The exhaust gas sucked through the sampling nozzle 2 is separated into dust and gas by the collection cyclone 5, and the dust is collected into the ash hopper 14. Conveyance from the ash hopper 14 to the unburned content measuring device 6 is controlled by the quantitative feeder 7, and after a rated amount is conveyed, the ash is stored in the downstream hopper 15. Incidentally, in order to prevent the ash hopper 14 from clogging, an overflow line 13 is attached to the upper part of the ash hopper 14.
ホッパ１５からダスＩ〜戻りライン８、戻りライン１２
への搬送は、シールフィーダ１６にて圧力シールをさせ
ながら行なう。このことにより、排ガス吸引用に設置し
た吸引ブロワ１１の吐出気流である排ガスがホッパ１５
へ逆流することを防ぐことができ、吐出気流である排ガ
スをダストの搬送用として使用することができる。From hopper 15 to Das I to return line 8, return line 12
The conveyance to is performed while pressure sealing is performed in the seal feeder 16. As a result, the exhaust gas, which is the discharge airflow of the suction blower 11 installed for exhaust gas suction, is transferred to the hopper 15.
It is possible to prevent the exhaust gas from flowing back into the air, and the exhaust gas, which is the discharged airflow, can be used for transporting the dust.
なお、排ガスダクト１内の流速が変化した場合には、吸
引ブロワ１１の入口側に設置した風量調整弁（風量調整
機構）１７を開、閉することによってサンプリングライ
ン４、排ガス戻りライン１０の流速を調整でき、等速吸
引によってサンプリングすることができる。Note that when the flow velocity in the exhaust gas duct 1 changes, the flow velocity in the sampling line 4 and the exhaust gas return line 10 can be adjusted by opening and closing the air volume adjustment valve (air volume adjustment mechanism) 17 installed on the inlet side of the suction blower 11. can be adjusted and sampled by isokinetic aspiration.
［発明の効果］
本発明によれば、排ガスダクト内の流速が変化しても等
速で吸引することができ、しかもダスト搬送用に排ガス
を用いることができる。[Effects of the Invention] According to the present invention, suction can be performed at a constant velocity even if the flow velocity in the exhaust gas duct changes, and moreover, the exhaust gas can be used for transporting dust.
第１図は本発明の実施例に係る灰中未燃分測定装置の概
略系統図、第２図は従来の灰中未燃分測定装置の概略系
統図である。
１・・・・・・排ガスダクト、２・・・・・・サンプリ
ングノズル、４・ ・サンプリングライン、５・・・・
捕集サイクロン、６・・・・・未燃分測定器、８・・・
・・ダスト戻りライン、９・・・・・・搬送用空気管、
１０・・・・排ガス戻りライン、１１・・・・・吸引ブ
ロワ、１２・・・・戻りライン、１６・・・・・・シー
ル機構、１７・・・・・風量調整機構。FIG. 1 is a schematic diagram of an apparatus for measuring unburned content in ash according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a conventional apparatus for measuring unburned content in ash. 1... Exhaust gas duct, 2... Sampling nozzle, 4... Sampling line, 5...
Collection cyclone, 6... Unburned content measuring device, 8...
...Dust return line, 9...Transportation air pipe,
10...Exhaust gas return line, 11...Suction blower, 12...Return line, 16...Seal mechanism, 17...Air volume adjustment mechanism.
Claims (1)
プリングノズルから採取したサンプリンググラインから
捕集サイクロンへ供給して排ガスとダストに分離し、排
ガスを排ガス戻りライン、吸引ブロワから戻りラインを
経て排ガスダクトへ戻し、分離されたダストを未燃分測
定装置を経て搬送用空気管からの搬送用空気によつてダ
スト戻りラインより戻りラインを経て排ガスダクトへ戻
す灰中未燃分測定装置において、 前記ダスト戻りラインの途中にダストでシールするシー
ル機構を設け、 かつ、吸引ブロワの上流に風量調整機構を配置したこと
を特徴とする灰中未燃分測定装置。[Claims] A sampling nozzle is arranged in the exhaust gas duct, and the sampling line taken from the sampling nozzle is supplied to a collection cyclone to separate the exhaust gas and dust, and the exhaust gas is connected to the exhaust gas return line and the return line from the suction blower. In the unburned content measuring device, the separated dust is returned to the exhaust gas duct via the dust return line via the dust return line via the unburned content measuring device, and then returned to the exhaust gas duct via the return line by the conveying air from the conveying air pipe. An apparatus for measuring unburned content in ash, characterized in that a sealing mechanism for sealing with dust is provided in the middle of the dust return line, and an air volume adjustment mechanism is disposed upstream of the suction blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1487090A JP2912970B2 (en) | 1990-01-26 | 1990-01-26 | Unburned ash measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1487090A JP2912970B2 (en) | 1990-01-26 | 1990-01-26 | Unburned ash measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03221830A true JPH03221830A (en) | 1991-09-30 |
| JP2912970B2 JP2912970B2 (en) | 1999-06-28 |
Family
ID=11873056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1487090A Expired - Fee Related JP2912970B2 (en) | 1990-01-26 | 1990-01-26 | Unburned ash measurement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2912970B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322718A (en) * | 1992-05-20 | 1993-12-07 | Tohoku Electric Power Co Inc | Measuring device for ash uncombusted portion in boiler exhaust gas and operating method for measuring device |
| US20110083594A1 (en) * | 2008-03-06 | 2011-04-14 | Ihi Corporation | Method and apparatus of controlling oxygen supply in oxyfuel combustion boiler |
| CN103674625A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Sampling device for gas-solid two-phase flow |
-
1990
- 1990-01-26 JP JP1487090A patent/JP2912970B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322718A (en) * | 1992-05-20 | 1993-12-07 | Tohoku Electric Power Co Inc | Measuring device for ash uncombusted portion in boiler exhaust gas and operating method for measuring device |
| US20110083594A1 (en) * | 2008-03-06 | 2011-04-14 | Ihi Corporation | Method and apparatus of controlling oxygen supply in oxyfuel combustion boiler |
| US9429315B2 (en) * | 2008-03-06 | 2016-08-30 | Ihi Corporation | Method and apparatus of controlling oxygen supply in oxyfuel combustion boiler |
| CN103674625A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Sampling device for gas-solid two-phase flow |
| CN103674625B (en) * | 2013-12-12 | 2016-06-22 | 中国神华能源股份有限公司 | Dual-Phrase Distribution of Gas olid sampler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2912970B2 (en) | 1999-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |