JPS61114798A - Apparatus for controlling production of electric power corresponding to amount of digestion gas - Google Patents
Apparatus for controlling production of electric power corresponding to amount of digestion gasInfo
- Publication number
- JPS61114798A JPS61114798A JP59236618A JP23661884A JPS61114798A JP S61114798 A JPS61114798 A JP S61114798A JP 59236618 A JP59236618 A JP 59236618A JP 23661884 A JP23661884 A JP 23661884A JP S61114798 A JPS61114798 A JP S61114798A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- digestion
- sludge
- amount
- digestion gas
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は消化ガス発電装置に係シ、特に、消化ガス発電
装置の安定なる運転制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a digestion gas power generation device, and particularly to a stable operation control device for a digestion gas power generation device.
従来、特開昭５６−９７５９６号公報に記載のように、
ガスタンク内の消化ガス蓋のみを検出し、それにより消
化ガス発電装置の出力を選定する発電制御装置であった
。しかし、実際の下水処理場では発生させる消化ガスは
主として消化槽加温を行なうためのボイラ用燃料として
用いられ、通常消化ガス発電装置はそれ以外の余剰ガス
を利用しているのが現状である。本発明はこのことを考
慮し、常に、消化槽の加温を発生した消化ガスで賄い、
それ以外の余剰ガス量の範囲で消化ガス発電装置の出力
を制御する点に違いがある。Conventionally, as described in Japanese Patent Application Laid-Open No. 56-97596,
It was a power generation control device that detected only the digestion gas lid in the gas tank and selected the output of the digestion gas power generation device accordingly. However, in actual sewage treatment plants, the digestion gas generated is mainly used as boiler fuel to heat the digestion tank, and the current situation is that digestion gas power generation equipment usually uses surplus gas other than that. . Taking this into consideration, the present invention always uses the generated digestion gas to heat the digestion tank.
The difference is that the output of the digestion gas power generation device is controlled within a range of other surplus gas amounts.
本発明の目的は、常に、発生消化ガス量だけで消化槽の
加温を賄うことができ、それ以外の余剰ガス量の範囲で
安定に運転制御することができる消化ガス発電装置を提
供することにある。An object of the present invention is to provide a digestion gas power generation device that can always cover the heating of a digestion tank with only the amount of generated digestion gas, and can stably control operation within the range of the amount of surplus gas other than that. It is in.
本発明の要点は消化槽の加温に必要な消化ガス量を算出
し、余剰ガス量のみで運転可能となる発電機出力を選定
する発電制御装置にある。The gist of the present invention resides in a power generation control device that calculates the amount of digestion gas required to heat the digestion tank and selects a generator output that allows operation with only the amount of surplus gas.
以下、本発明の一実施例を図面により説明する。 An embodiment of the present invention will be described below with reference to the drawings.
２は濃縮槽で下水より分離され次汚泥はこの槽内で脱水
され濃縮される。１は消化槽で濃縮槽２よシ汚泥が投入
され槽内で消化処理される。その際、発生する消化ガス
１６はガスタンク３に貯留される。９はスチームボイラ
でガスタンク３より供給される消化ガスを燃料とし、ス
チームを発生させて消化槽１に吹き込むことにより、汚
泥消化に適する温度に消化槽ｌ、内２加熱する。１０は
消化ガス発電装置でガスエンジン１１．発電機１２、発
電機盤２３及び廃熱回収装置１３よシ成る。ガスタンク
３より供給される消化ガスを燃料とし、ガスエンジンｌ
ｉ１！ｃ駆動し、それに直結され九発電機１２ｅ運転す
ることによフ、電力１８を発生させる。また、ガスエン
ジン運転時にガスエンジンから発生される廃熱を給水タ
ンク１４から水を供水し廃熱回収装置１ｓｔ介して温水
１５として回収し、それをスチームボイラ９へ供給する
。本発明は消化槽ｌの加温に必要な熱量を算出し、それ
によるボイラ供給ガス量を算定して、それ以外の消化ガ
ス発電装置に供給出来るガス量から発電装置の出力を選
定する。その制御方法を以下に説明する。2 is separated from sewage in a thickening tank, and the sludge is then dehydrated and concentrated in this tank. 1 is a digestion tank, into which sludge from the thickening tank 2 is input and digested in the tank. At that time, the generated digestion gas 16 is stored in the gas tank 3. A steam boiler 9 uses the digestion gas supplied from the gas tank 3 as fuel to generate steam and blow it into the digestion tank 1, thereby heating the inside of the digestion tank 1 to a temperature suitable for sludge digestion. 10 is a digestion gas power generation device and a gas engine 11. It consists of a generator 12, a generator panel 23, and a waste heat recovery device 13. The gas engine l uses the digestion gas supplied from the gas tank 3 as fuel.
i1! Electric power 18 is generated by driving a generator 12e directly connected to the electric power generator 12e. Further, waste heat generated from the gas engine during operation of the gas engine is recovered as hot water 15 by supplying water from the water supply tank 14 via the waste heat recovery device 1st, and is supplied to the steam boiler 9. The present invention calculates the amount of heat required to heat the digestion tank 1, calculates the amount of gas to be supplied to the boiler based on the amount of heat, and selects the output of the power generation device based on the amount of gas that can be supplied to other digestion gas power generation devices. The control method will be explained below.
まず、消化槽１の加熱必要熱ＨＨは、消化槽ｌの放熱損
失熱量Ｈ１と汚泥加熱必要熱量Ｈｚとの和であシＨ１は
、
Ｈｓ＝α・Ａ ・（Ｔｏ Ｔｉ ） ＝−
−（ｔ）但し、α：消化槽の外気への熱伝達率
Ａ：消化槽表面積
Ｔｏ ：汚泥加熱温度
Ｔｌ ：外気温度
ここでα、Ａ、Ｔｏは定数であるのでＴｌを計測すれば
Ｈｌは求められる。First, the required heating heat HH of the digestion tank 1 is the sum of the heat dissipation loss amount H1 of the digestion tank 1 and the required amount of heat Hz for heating the sludge.
-(t) However, α: Heat transfer coefficient of the digestion tank to the outside air A: Digestion tank surface area To: Sludge heating temperature Tl: Outside air temperature Here, α, A, and To are constants, so if Tl is measured, Hl is Desired.
また、Ｈｌは、
Ｈｚ＝Ｑ・（Ｔｏ −Ｔｔ ） ・・・・・
・・・・（２）但し、Ｑ：消化投入汚泥量
Ｔｏ ＝汚泥加熱温度
Ｔｚ ；投入汚泥温度
ＨｚはＱ及びＴｚ ｔ’計測すれば求められる。従って
、加熱必要熱量ＨはＴＩ 、Ｔｚ 、Ｑを計測すれば求
められる。Also, Hl is Hz=Q・(To −Tt)...
(2) However, Q: Amount of sludge input into digestion To = Sludge heating temperature Tz; Input sludge temperature Hz can be obtained by measuring Q and Tz t'. Therefore, the required heat amount H for heating can be obtained by measuring TI, Tz, and Q.
発生される消化ガス量Ｑｌは、 但し、Ｑ２ ：ガス流量（ｍ３ ） Ｔ３ ：ガス温度（Ｃ） Ｐｌ ：ガス圧力（Ｋｇ／ａｄ ） Ｔｓ 、Ｐｌを計測すれば求められる。The amount of digestive gas generated Ql is However, Q2: Gas flow rate (m3) T3: Gas temperature (C) Pl: Gas pressure (Kg/ad) It can be obtained by measuring Ts and Pl.
また、消化ガス発熱量Ｈ３は消化槽に取シ付けられたメ
タン濃度計２１によフ、
但し、ＣＨ４：メタン濃度（チ）
以上よシ消化ガス発電装置に供給出来る消化がス量Ｑ３
は
但し、η８：ボイラ効率、例えば０．８とする。In addition, the calorific value H3 of the digested gas is determined by the methane concentration meter 21 attached to the digestion tank.
However, η8: Boiler efficiency, for example, 0.8.
Ｒ＝消化ガス発電装置からげ廃熱回 収熱量率（エンジンに供給され る消化ガスの熱量に対する割合） 例えば０．４とする。R = Digestion gas power generation equipment waste heat recovery Heat extraction rate (supplied to the engine) (ratio to the heat value of digestion gas) For example, let it be 0.4.
となる。従って、ガス量による発゛逍機出力は但し、η
Ｇ＝発電効率（エンジン熱効率×発電機効率）例えば０
．３とする。becomes. Therefore, the generator output depending on the gas amount is, however, η
G = power generation efficiency (engine thermal efficiency x generator efficiency) e.g. 0
．． Set it to 3.
で算定出来る。It can be calculated by
温度計６で外気温度Ｔｌを測定し、汚泥流量計２０で汚
泥流量Ｑと温度計７で汚泥温度Ｔ２を測定することによ
り消化槽の加温必要熱量Ｈは算出できる。温度計４でガ
ス温度Ｔ３と圧力計５でガス圧力Ｐｉ とガス流量計２
２でガス流量Ｑ２を測定することにより発生消化ガスｋ
Ｑｔを算出できる。メタン濃度計２１で消化ガス中のメ
タン濃度を計測し消化ガス発熱量［ｃａｌが算出できる
。以上の各パラメーターを計測することにより、制御装
置８で演算を行ない消化ガス発電装置に供給出来る消化
ガス量Ｑｔ求め、それに見合う発電出力を選定するよう
に制御を行なう。By measuring the outside air temperature Tl with the thermometer 6, the sludge flow rate Q with the sludge flow meter 20, and the sludge temperature T2 with the thermometer 7, the required amount of heat H for heating the digestion tank can be calculated. Thermometer 4 shows gas temperature T3, pressure gauge 5 shows gas pressure Pi, and gas flowmeter 2
By measuring the gas flow rate Q2 in step 2, the generated digestion gas k
Qt can be calculated. The methane concentration in the digestion gas is measured with the methane concentration meter 21, and the calorific value of the digestion gas [cal] can be calculated. By measuring each of the above parameters, the control device 8 performs calculations to determine the amount of digested gas Qt that can be supplied to the digested gas power generation device, and performs control to select a power generation output corresponding to the amount Qt.
本発明によれば、変動する発生ガス量、ガス成分に応じ
、消化槽の加熱を生じる消化ガスで賄える範囲で、消化
ガス発電装置を運転する場合に、自動的に発電可能な発
電出力ｆ！ｃ）８定出来、安定な消化ガス発電装置の運
転が可能となる。According to the present invention, when the digestion gas power generation device is operated within the range where the heating of the digestion tank can be covered by the digestion gas that generates the heating of the digestion tank, the power generation output f! c) It is possible to operate the digestion gas power generation device stably at 8 times.
図面は全体のシステム系統図である。
ｌ・・・消化槽、２・・・濃縮槽、３・・・ガスタンク
、４・・・ガス温度計、５・・・ガス圧力計、６・・・
外気温度計、７・・・汚泥温度計、８・・・発電制御装
置、９・・・スチームボイラ、１０・・・消化ガス発電
装置、１１・・・ガスエンジン、１２・・・発電機、１
３・・・廃熱回収装置、１４・・・給水タンク。The drawing is an overall system diagram. l...Digestion tank, 2...Concentration tank, 3...Gas tank, 4...Gas thermometer, 5...Gas pressure gauge, 6...
Outside air temperature meter, 7... Sludge thermometer, 8... Power generation control device, 9... Steam boiler, 10... Digestion gas power generation device, 11... Gas engine, 12... Generator, 1
3... Waste heat recovery device, 14... Water supply tank.
Claims (1)
ンジンと、このガスエンジンと直結される発電機と、前
記ガスエンジンの廃熱を回収する廃熱回収装置とより成
る消化ガス発電装置において、外気温、汚泥量及び汚泥
温度を計測し、消化槽加熱に必要な消化ガス量を演算さ
せることにより、消化ガス発電装置の出力の制御を行な
うことを特徴とする消化ガス発電制御装置。1. In a digester gas power generation device consisting of a gas engine that uses digester gas generated in a sewage treatment plant as fuel, a generator directly connected to the gas engine, and a waste heat recovery device that recovers the waste heat of the gas engine. A digestion gas power generation control device, characterized in that the output of the digestion gas power generation device is controlled by measuring outside temperature, sludge amount, and sludge temperature and calculating the amount of digestion gas necessary for heating the digestion tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59236618A JPS61114798A (en) | 1984-11-12 | 1984-11-12 | Apparatus for controlling production of electric power corresponding to amount of digestion gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59236618A JPS61114798A (en) | 1984-11-12 | 1984-11-12 | Apparatus for controlling production of electric power corresponding to amount of digestion gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61114798A true JPS61114798A (en) | 1986-06-02 |
Family
ID=17003304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59236618A Pending JPS61114798A (en) | 1984-11-12 | 1984-11-12 | Apparatus for controlling production of electric power corresponding to amount of digestion gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61114798A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015051417A (en) * | 2013-09-09 | 2015-03-19 | 水ｉｎｇ株式会社 | Sludge treatment system and method |
| JP2017209680A (en) * | 2017-09-11 | 2017-11-30 | 水ｉｎｇ株式会社 | Sludge treatment system and sludge treatment method |
-
1984
- 1984-11-12 JP JP59236618A patent/JPS61114798A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015051417A (en) * | 2013-09-09 | 2015-03-19 | 水ｉｎｇ株式会社 | Sludge treatment system and method |
| JP2017209680A (en) * | 2017-09-11 | 2017-11-30 | 水ｉｎｇ株式会社 | Sludge treatment system and sludge treatment method |
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