JPH0842801A - Method for controlling quantity of exhaust gas from boiler - Google Patents

Method for controlling quantity of exhaust gas from boiler

Info

Publication number
JPH0842801A
JPH0842801A JP17833994A JP17833994A JPH0842801A JP H0842801 A JPH0842801 A JP H0842801A JP 17833994 A JP17833994 A JP 17833994A JP 17833994 A JP17833994 A JP 17833994A JP H0842801 A JPH0842801 A JP H0842801A
Authority
JP
Japan
Prior art keywords
gas
boiler
amount
value
air
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.)
Withdrawn
Application number
JP17833994A
Other languages
Japanese (ja)
Inventor
Arihiko Sorada
有彦 空田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP17833994A priority Critical patent/JPH0842801A/en
Publication of JPH0842801A publication Critical patent/JPH0842801A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE:To control the quantity of exhaust gas by a method wherein the quantity of flow of combustion improving gas or heavy oil is controlled based on the net heat load of the flow entering a boiler and is corrected by the measured value of temp. inside the furnace. CONSTITUTION:The net heat load of a boiler 1 and the quantity of air required for the fuel combustion are calculated by a calculating machine 21 based on the specific heat, heating value, temp. and flow quantity of CO gas for use as fuel and the heating value and flow quantity of combustion improving gas or heavy oil. The deviation value of the required quantity of steam and the measured value of the flow quantity of the combustion improving gas or heavy oil corrected by the pressure and temp. are sent to a flow quantity adjuster 15a to measure the deviation value of the temp. inside the furnace and the calculated value of the net heat load, after correction by this measured deviation value, is sent to an adjusting valve 11 to control the flow quantity of the combustion improving gas or heavy oil. On the other hand, after the calculated value of the air quantity is sent to an air corrector 20 to be corrected by the temp., the air quantity is further corrected by the value deviating from the actual air quantity and is sent to an inlet vane 21 of a forced draft fan, so that the air is controlled to an adequate quantity. The flow quantity of the combustion improving gas or heavy oil is always held to the necessary minimum and, as a result, the exhaust gas can be held to a small quantity.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、R−FCC排ガス中の
COガスを燃料とするCOガスボイラーの排ガス量の制
御方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the exhaust gas amount of a CO gas boiler which uses CO gas in R-FCC exhaust gas as a fuel.

【0002】[0002]

【従来の技術】近年、ガソリンの需要増加に伴って、重
質油からガソリンを精製するR−FCC( Re-Fluid C
atalytic Cracking,残査油接触流動分解)装置が多く
設置されるようになった。このR−FCC装置から排出
される高温(約600℃)の排ガス中には、一部可燃ガ
ス(H2 ,CH4 ,CO)が混合しているので、これを
燃料として利用するいわゆるCOガスボイラーも現われ
ている。
2. Description of the Related Art In recent years, along with the increasing demand for gasoline, R-FCC (Re-Fluid C
Atalytic cracking, residual oil contact flow cracking) equipment is now installed. A part of combustible gas (H 2 , CH 4 , CO) is mixed in the high temperature (about 600 ° C.) exhaust gas discharged from this R-FCC device, and so-called CO gas is used as fuel. The boiler is also appearing.

【0003】図4は従来のCOガスボイラーの一例を示
す概略図である。ボイラー(1)にCOガス(Gc )と
助燃ガス(炭化水素系ガス)または助燃重油(G)を送
り込むとともに、送風機(2)より適量の空気(a)を
供給し、バーナ(4)で燃焼させて蒸気(Gs )を発生
させる。その燃焼排ガス(G3 )はダクト(3)に導か
れ、節炭器(10)において熱回収されたのち、外部に
排出される。
FIG. 4 is a schematic view showing an example of a conventional CO gas boiler. While feeding CO gas (G c ) and auxiliary combustion gas (hydrocarbon gas) or auxiliary combustion heavy oil (G) into the boiler (1), an appropriate amount of air (a) is supplied from the blower (2) and the burner (4) is used. Combustion produces steam (G s ). The combustion exhaust gas (G 3 ) is guided to the duct (3), and the heat is recovered in the economizer (10) and then discharged to the outside.

【0004】上記従来のCOガスボイラーは次のように
して制御されていた。すなわち、ボイラー(1)から発
生する蒸気の量を規定し、この規定蒸気量に見合った燃
料を「COガス量+助燃ガスまたは助燃重油量」として
把握し、需要の多少に関係なく規定蒸気量が発生するよ
うに調節弁(6)を調節して助燃ガス量または助燃重油
量を制御するようになっていた。
The above-mentioned conventional CO gas boiler has been controlled as follows. That is, the amount of steam generated from the boiler (1) is regulated, and the fuel commensurate with this regulated amount of steam is grasped as "CO gas amount + auxiliary combustion gas or auxiliary combustion heavy oil amount", and the specified amount of steam is irrespective of the demand. Therefore, the control valve (6) is adjusted so that the amount of auxiliary combustion gas or the amount of auxiliary fuel oil is controlled.

【0005】[0005]

【発明が解決しようとする課題】前記従来のCOガスボ
イラーにおいては、ボイラーから発生する蒸気の量を規
定し、この規定蒸気量に見合った燃料を「COガス量+
助燃ガスまたは助燃重油量」として把握し、需要の多少
に関係なく規定蒸気量が発生するように調節弁(6)を
調節して助燃ガス量または助燃重油量を制御していたの
で、次のような問題があった。
In the above-mentioned conventional CO gas boiler, the amount of steam generated from the boiler is regulated, and the fuel corresponding to this regulated steam amount is "CO gas amount +
"Auxiliary gas or auxiliary fuel oil amount", and the amount of auxiliary fuel gas or auxiliary fuel oil was controlled by adjusting the control valve (6) so that the specified steam amount is generated regardless of the demand. There was such a problem.

【0006】1) ボイラー火炉から排出される排ガス
量が常時多くなり、厳しくなった公害規制に照して不利
である。 2) 蒸気の需要が少ない場合は、余った蒸気は大気放
出することとなりムダとなる。
1) The amount of exhaust gas discharged from a boiler furnace is constantly increased, which is disadvantageous in view of strict pollution regulations. 2) If the demand for steam is low, the excess steam will be released to the atmosphere, resulting in waste.

【0007】[0007]

【課題を解決するための手段】本発明者は、前記従来の
課題を解決することを目的とし、排ガス中のCOガスに
助燃ガスまたは助燃重油を加えた燃料で稼動されるCO
ガスボイラーにおいて、供給されるCOガスの比熱
(P),発熱量(H),温度(T0 ),流量(Q0)お
よび供給される助燃ガスまたは助燃重油の発熱量
(Y),流量(G0 )からボイラーに入る正味熱負荷量
(A)を計算し、またこの計算値(A)を用いて燃焼に
必要な空気量(B0 )を計算し、上記計算値(A)に基
づいてボイラーに供給する助燃ガスまたは助燃重油の流
量(G)を制御すると共に、ボイラーの炉内温度
(T1 )および押込通風機から供給される空気量に温度
補正した空気量(B 2 )を計測してそれぞれ炉内用設定
の規定温度(Ta )および排ガスO2 で補正した必要空
気量(B1 )と比較し、その偏差値に基づいて、ボイラ
ーに供給する助燃ガスまたは助燃重油の流量(G0 )お
よび空気量(B3 )を補正するようにしたことを特徴と
するボイラーの排ガス量設定方法を提案するものであ
る。
SUMMARY OF THE INVENTION The inventor
In order to solve the problem, CO gas in the exhaust gas
CO operated with fuel containing auxiliary combustion gas or heavy fuel oil
Specific heat of supplied CO gas in a gas boiler
(P), calorific value (H), temperature (T0), Flow rate (Q0)
And calorific value of supplied auxiliary gas or auxiliary fuel oil
(Y), flow rate (G0) From the net heat load entering the boiler
Calculate (A) and use this calculated value (A) for combustion
Required air volume (B0) Is calculated based on the calculated value (A) above.
Auxiliary gas or auxiliary fuel oil flow supplied to the boiler
Control the amount (G) and the temperature inside the furnace of the boiler
(T1) And the amount of air supplied from the forced draft fan to the temperature
Corrected air volume (B 2) Is measured and set for each furnace
Specified temperature (Ta) And exhaust gas O2Required sky corrected by
Volume (B1), And based on the deviation value, the boiler
Flow rate of auxiliary combustion gas or auxiliary combustion heavy oil (G0)
And air volume (B3) Is to be corrected
It proposes a method for setting the exhaust gas amount of a boiler
It

【0008】[0008]

【作用】前記のとおり本発明の方法においては、ボイラ
ーに供給される助燃ガスまたは助燃重油の流量は、供給
中のCOガスの比熱,発熱量,温度,流量および供給中
の助燃ガスまたは助燃重油の発熱量,流量などから算出
されたボイラーに入る正味熱負荷量(A)に基づいて制
御され、またその制御量はボイラーの炉内温度計測値
(T1 )によって補正される。一方供給される空気量も
同様に上記計算値(A)を用いて算出された計算空気量
(O2 補正)と風道中の実測空気量(補正済)とを比較
して制御される。したがって、需要蒸気量が変動しても
助燃ガスまたは助燃重油の流量を常に必要最少限に抑え
ることができ、その結果排出されるガス量を少なく抑え
ることができる。
As described above, in the method of the present invention, the flow rates of the auxiliary combustion gas or auxiliary combustion heavy oil supplied to the boiler are the specific heat of the CO gas being supplied, the calorific value, the temperature, the flow rate and the auxiliary combustion gas or auxiliary combustion heavy oil being supplied. Is controlled based on the net heat load (A) entering the boiler, which is calculated from the calorific value, flow rate, etc. of the boiler, and the controlled quantity is corrected by the furnace temperature measurement value (T 1 ) of the boiler. On the other hand, the supplied air amount is similarly controlled by comparing the calculated air amount (O 2 correction) calculated using the calculated value (A) with the actually measured air amount in the air duct (corrected). Therefore, even if the demanded steam amount fluctuates, the flow rate of the auxiliary combustion gas or the auxiliary combustion heavy oil can always be suppressed to the necessary minimum, and as a result, the amount of discharged gas can be suppressed to a small amount.

【0009】[0009]

【実施例】図1は本発明方法を実施する制御回路の一例
を示す図、図2は図1のうち通風量制御の部分を詳細に
示す図、図3は同じく本発明方法の制御フローの一例を
示す図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing an example of a control circuit for carrying out the method of the present invention, FIG. 2 is a diagram showing in detail the part for controlling the air flow in FIG. 1, and FIG. 3 is a control flow of the method of the present invention. It is a figure which shows an example.

【0010】図示するように、ボイラー(1)には燃料
としてCOガス(Gc )と調節弁(11)によって調整
された適量の助燃ガス(炭化水素系ガス)または助燃重
油(G)とが送り込まれ、これに押込通風機の入口べー
ン開度駆動器(21)によって適量の空気(B3 )が送
られ、これらをバーナ(4)を介して燃焼させて蒸気
(Gs )を発生させる。また排ガス(G3 )はダクト
(3)に導かれ、節炭器(図示せず)で熱回収された
後、外部に排出されるようになっている。
As shown in the figure, the boiler (1) contains CO gas (G c ) as a fuel and an appropriate amount of auxiliary combustion gas (hydrocarbon gas) or auxiliary combustion heavy oil (G) adjusted by a control valve (11). A proper amount of air (B 3 ) is fed to the inlet vane opening degree driver (21) of the forced draft fan, and these are burned through the burner (4) to generate steam (G s ). generate. Further, the exhaust gas (G 3 ) is guided to the duct (3), and is subjected to heat recovery by a economizer (not shown) and then discharged to the outside.

【0011】本実施例においては、上記のようなCOガ
スボイラーにおいて、ボイラー(1)から排出される排
ガス量(G3 )を最小値とするため、燃料「COガス+
助燃ガスまたは助燃重油」のうちの助燃ガスまたは助燃
重油(G)の流量を、需要蒸気量に見合った燃焼に必要
な最小量となるように制御する。また空気量(B3 )に
ついても上記最小助燃ガス流量または助燃重油流量(G
0 )に応じて制御する。
In the present embodiment, in the above CO gas boiler, the amount of exhaust gas (G 3 ) discharged from the boiler (1) is set to the minimum value, so that the fuel "CO gas +
The flow rate of the auxiliary combustion gas or auxiliary combustion heavy oil (G) in the "auxiliary combustion gas or auxiliary combustion heavy oil" is controlled so as to be the minimum amount required for combustion commensurate with the demand steam amount. Regarding the air amount (B 3 ), the minimum auxiliary combustion gas flow rate or the auxiliary combustion heavy oil flow rate (G
0 ) to control.

【0012】以下、この制御方法を図1ないし図3によ
り説明する。供給されるCOガス(Gc )の比熱
(P),発熱量(H),温度(T0 ),流量(Q0 )お
よび供給される助燃ガスまたは助燃重油(G)の発熱量
(Y),流量(G0 )を基に、計算機(21)において
次式によりボイラー(1)の正味熱負荷量(A)を計算
し、また発熱量(H),(Y)から求められる理論空気
量(A1 ),(A2 )を用いて燃焼に必要な空気量(B
0 )を計算する。
The control method will be described below with reference to FIGS. Specific heat (P), calorific value (H), temperature (T 0 ), flow rate (Q 0 ) of supplied CO gas (G c ) and calorific value (Y) of supplied auxiliary gas or auxiliary fuel oil (G) , The theoretical air amount calculated from the calorific values (H) and (Y) by calculating the net heat load (A) of the boiler (1) in the calculator (21) based on the flow rate (G 0 ) according to the following equation. Using (A 1 ) and (A 2 ) the amount of air (B
0 ) is calculated.

【0013】[0013]

【数1】 [Equation 1]

【0014】上記計算値(A)は需要蒸気量などを基に
別途設定されている規準値(Aa )と比較され、その偏
差値(α0 )は流量調節器(15a)に送られる。ま
た、供給中の助燃ガスまたは助燃重油(G)の流量(G
0 )は、流量計(9b)で計測され、その計測値が圧力
・温度補正器(17)に送られて、圧力計(8a),温
度計(7c)による各計測値を用い圧力・温度補正され
る。そして流量調節器(15a)に送られ、前記計算値
(A)と規準値(Aa )との偏差値(α0 )と比較され
たのち、助燃ガスまたは助燃重油流量制御量(β0 )と
して最低流量保持器(19)へ送られる。また温度計
(7b)によって計測されたボイラー(1)の炉内温度
計測値(T1 )は、温度比較器(14a)に送られて別途
規定された規準値(Ta )と比較され、その偏差値は前
記最低流量保持器(19)へ送られる。そして前記助燃
ガスまたは助燃重油流量制御量(β0 )は、この偏差値
によって補正されたのち、調節弁(11)に送られ、助
燃ガスまたは助燃重油の流量(G 0 )を最低流量に制御
するようになっている。
The above calculated value (A) is based on the demanded steam amount and the like.
Standard value set separately (Aa) And its bias
Difference value (α0) Is sent to the flow controller (15a). Well
Also, the flow rate (G) of the auxiliary combustion gas or auxiliary fuel oil (G) being supplied
0) Is measured by the flow meter (9b), and the measured value is the pressure.
・ Sending to the temperature compensator (17), pressure gauge (8a), temperature
Pressure and temperature are corrected using each measurement value by the gyro (7c)
It Then, it is sent to the flow controller (15a) and the calculated value
(A) and standard value (Aa) Deviation value (α0) Is compared with
After that, the auxiliary gas or auxiliary fuel oil flow rate control amount (β0)When
And sent to the minimum flow rate holder (19). Also thermometer
Furnace temperature of boiler (1) measured by (7b)
Measured value (T1) Is sent to the temperature comparator (14a) separately
Specified standard value (Ta) And the deviation value is
It is sent to the minimum flow rate retainer (19). And the auxiliary combustion
Gas or auxiliary fuel oil flow rate control amount (β0) Is the deviation value
After being corrected by, it is sent to the control valve (11) and
Flow rate of fuel gas or auxiliary fuel oil (G 0) To the minimum flow rate
It is supposed to.

【0015】一方、前記計算空気量(B0 )は空気補正
器(20)へ送られる。また、ボイラー(1)からダク
ト(3)へ排出される排ガス(G3 )中に含まれるO2
量が別途計測され、O2 ガス発信器(18)を経て計算
空気量(B0 )のO2 補正を行なう。その結果として
(B1 )が得られる。押込通風機(2)を介してボイラ
ー(1)に送られている空気量は流量計(9a)で計測
され、その計測値(b1)は流量補正器(14b)に送ら
れ、温度計(7a)の計測値によって温度補正されたの
ち、空気量制御量(B2 )として流量調節器(15b)へ
送られる。そして、この流量調節器 (15b)において、
前記O2 補正された計算空気量(B1 )と実際空気量
(B2 )との偏差値(α2 )により、空気の制御量が補
正されて押込通風機入口ベーン(20)に送られ、適正
な空気量(B3 )として制御するようになっている。
On the other hand, the calculated air amount (B 0 ) is sent to the air compensator (20). Further, O 2 contained in the exhaust gas (G 3 ) discharged from the boiler (1) to the duct (3)
The amount is separately measured, and the calculated air amount (B 0 ) is corrected by O 2 through the O 2 gas transmitter (18). As a result, (B 1 ) is obtained. The amount of air sent to the boiler (1) through the forced draft fan (2) is measured by the flow meter (9a), and the measured value (b 1 ) is sent to the flow rate compensator (14b) and the thermometer. After the temperature is corrected by the measured value of (7a), it is sent to the flow rate controller (15b) as an air amount control amount (B 2 ). And in this flow controller (15b),
The control amount of air is corrected by the deviation value (α 2 ) between the O 2 corrected calculated air amount (B 1 ) and the actual air amount (B 2 ) and is sent to the forced draft fan inlet vane (20). , And is controlled as an appropriate air amount (B 3 ).

【0016】上記のように、ボイラー(1)の目標蒸気
量に応じて正味熱負荷量の規準値(Aa )を変えるよう
にし、また、COガスのボイラーへの供給条件(流量,
温度,比熱,発熱量等)および助燃ガスまたは助燃重油
の条件(発熱量,流量)に基づいて正味熱負荷量(A)
を算出し、この計算値(A)と規準値(Aa )との偏差
値を用いて、供給する助燃ガスまたは助燃重油の流量を
制御することにより、目標蒸気量が変った場合でも助燃
ガスまたは助燃重油流量を常に必要最小値に抑えること
ができ、その結果、排出されるガス量を最低量に減らす
ことができる。また、ボイラー(1)の炉内温度および
排出ガス量(O2 ガス量)を計測し、この計測値によっ
て制御量を補正することにより、計算機(21)の制御
エラーがバックアップされ、これによって常に安定した
運転が保証される。
As described above, the reference value (A a ) of the net heat load is changed according to the target steam amount of the boiler (1), and the supply condition (flow rate, flow rate,
Temperature, specific heat, calorific value, etc.) and net heat load (A) based on the conditions (heat value, flow rate) of auxiliary gas or auxiliary fuel oil
Is calculated and the deviation value between the calculated value (A) and the reference value (A a ) is used to control the flow rate of the auxiliary combustion gas or the auxiliary combustion heavy oil to be supplied, so that the auxiliary combustion gas is changed even if the target steam amount changes. Alternatively, the auxiliary combustion heavy oil flow rate can always be suppressed to the required minimum value, and as a result, the amount of discharged gas can be reduced to the minimum amount. Further, by measuring the furnace temperature of the boiler (1) and the exhaust gas amount (O 2 gas amount), and correcting the control amount by this measured value, the control error of the computer (21) is backed up, and by this, it is always possible. Stable operation is guaranteed.

【0017】[0017]

【発明の効果】本発明の排ガス量制御方法においては、
ボイラーに供給される燃料「COガス+助燃ガスまたは
助燃重油」のうち助燃ガスまたは助燃重油の流量が、C
Oガスの比熱,発熱量,温度,流量や助燃ガスまたは助
燃重油の発熱量,流量などから算出された計算値と比較
されて制御され、またその制御量はボイラーの炉内温度
計測値によって補正される。一方必要空気量も同じく上
記計算値を基に算出された計算空気量と実際の空気量を
比較して制御されるようになる。したがって、需要蒸気
量が変動しても助燃ガスまたは助燃重油流量を常に必要
最少限に抑えることができ、その結果排出されるガス量
を少なく抑えることができる。また、炉内温度,排ガス
中のO2 量それぞれの実測値によって、上記助燃ガスま
たは助燃重油流量,空気量それぞれの制御量を補正する
ので、計算機の制御エラーがバックアップされ、常に安
定した運転ができるなどの効果がある。
According to the exhaust gas amount control method of the present invention,
Of the fuel "CO gas + auxiliary fuel gas or auxiliary fuel oil" supplied to the boiler, the flow rate of the auxiliary gas or auxiliary fuel oil is C
It is controlled by comparing it with the calculated values calculated from the specific heat, calorific value, temperature and flow rate of O gas and calorific value and flow rate of auxiliary gas or auxiliary fuel oil, and the controlled value is corrected by the measured temperature inside the boiler furnace. To be done. On the other hand, the required air amount is also controlled by comparing the calculated air amount calculated based on the above calculated value with the actual air amount. Therefore, even if the demanded steam amount fluctuates, the flow rate of the auxiliary combustion gas or the auxiliary combustion heavy oil can be always suppressed to the necessary minimum, and as a result, the amount of discharged gas can be suppressed to be small. Further, since the control amounts of the auxiliary combustion gas or auxiliary combustion heavy oil flow rate and the air amount are corrected by the measured values of the furnace temperature and the O 2 amount in the exhaust gas, the control error of the computer is backed up, and stable operation is always performed. There is an effect such as being able to.

【図面の簡単な説明】[Brief description of drawings]

【図1】図1は本発明方法を実施する制御回路の一例を
示す図である。
FIG. 1 is a diagram showing an example of a control circuit for carrying out the method of the present invention.

【図2】図2は図1の部分的補足説明図である。FIG. 2 is a partial supplementary explanatory diagram of FIG.

【図3】図3は同じく本発明方法の制御フローの一例を
示す図である。
FIG. 3 is a diagram similarly showing an example of a control flow of the method of the present invention.

【図4】図4は従来のCOガスボイラーの一例を示す概
略図である。
FIG. 4 is a schematic diagram showing an example of a conventional CO gas boiler.

【符号の説明】[Explanation of symbols]

(1) ボイラー (2) 押込通風機 (3) ダクト (4) バーナ (6) 調節弁 (7a),(7b),(7c) 温度計 (8a) ,(8b) 圧力計 (9a),(9b) 流量計 (10) 節炭器 (11) 調節弁 (13) 正味熱量比較器 (14a),(14b) 温度比較器 (15a),(15b) 流量調節器 (16) 圧力調節器 (17) 圧力・温度補正器 (18) O2 ガス発信器 (19) 最低流量保持器 (20) 空気量補正器 (21) 計算機(1) Boiler (2) Push fan (3) Duct (4) Burner (6) Control valve (7a), (7b), (7c) Thermometer (8a), (8b) Pressure gauge (9a), ( 9b) Flowmeter (10) Charcoal saver (11) Control valve (13) Net calorie comparator (14a), (14b) Temperature comparator (15a), (15b) Flow controller (16) Pressure controller (17) ) Pressure / temperature compensator (18) O 2 gas transmitter (19) Minimum flow rate retainer (20) Air amount compensator (21) Calculator

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 排ガス中のCOガスに助燃ガスまたは助
燃重油を加えた燃料で稼動されるCOガスボイラーにお
いて、供給されるCOガスの比熱(P)、発熱量
(H),温度(T0 ),流量(Q0 )および供給される
助燃ガスまたは助燃重油の発熱量(Y),流量(G0
からボイラーに入る正味熱負荷量(A)を計算し、また
この計算値(A)を用いて燃焼に必要な空気量(B0
を計算し、上記計算値(A)に基づいてボイラーに供給
する助燃ガスまたは助燃重油の流量(G)を制御すると
共に、ボイラーの炉内温度(T1 )および押込通風機か
ら供給される空気量に温度補正した空気量(B2 )を計
測してそれぞれ炉内用設定の規定温度(Ta )および排
ガスO2 で補正した必要空気量(B1 )と比較し、その
偏差値に基づいて、ボイラーに供給する助燃ガスまたは
助燃重油の流量(G0 )および空気量(B3 )を補正す
るようにしたことを特徴とするボイラーの排ガス量制御
方法。
1. In a CO gas boiler operated by a fuel obtained by adding an auxiliary combustion gas or an auxiliary combustion heavy oil to CO gas in exhaust gas, the specific heat (P), heat generation amount (H), and temperature (T 0 of the supplied CO gas). ), The flow rate (Q 0 ), the calorific value (Y) and the flow rate (G 0 ) of the supplied auxiliary combustion gas or auxiliary combustion heavy oil.
From this, calculate the net heat load (A) entering the boiler, and use this calculated value (A) to calculate the amount of air required for combustion (B 0 ).
And controlling the flow rate (G) of the auxiliary combustion gas or auxiliary combustion heavy oil to be supplied to the boiler based on the calculated value (A), and the temperature in the furnace of the boiler (T 1 ) and the air supplied from the forced draft fan. The amount of air (B 2 ) whose temperature is corrected to the amount is measured and compared with the specified temperature (T a ) set in the furnace and the required amount of air (B 1 ) corrected with the exhaust gas O 2 , respectively, and based on the deviation value The exhaust gas amount control method for a boiler, wherein the flow rate (G 0 ) and the air amount (B 3 ) of the auxiliary combustion gas or the auxiliary combustion heavy oil supplied to the boiler are corrected.
JP17833994A 1994-07-29 1994-07-29 Method for controlling quantity of exhaust gas from boiler Withdrawn JPH0842801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17833994A JPH0842801A (en) 1994-07-29 1994-07-29 Method for controlling quantity of exhaust gas from boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17833994A JPH0842801A (en) 1994-07-29 1994-07-29 Method for controlling quantity of exhaust gas from boiler

Publications (1)

Publication Number Publication Date
JPH0842801A true JPH0842801A (en) 1996-02-16

Family

ID=16046767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17833994A Withdrawn JPH0842801A (en) 1994-07-29 1994-07-29 Method for controlling quantity of exhaust gas from boiler

Country Status (1)

Country Link
JP (1) JPH0842801A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110319463A (en) * 2019-08-09 2019-10-11 中山市铧禧电子科技有限公司 A kind of system and method calculating reduced heat input using air
CN114046528A (en) * 2021-11-02 2022-02-15 中国船舶重工集团公司第七0三研究所 Boiler fuel temperature control method
KR20220020133A (en) * 2020-08-11 2022-02-18 주식회사 포스코 Apparatus for treating waste gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110319463A (en) * 2019-08-09 2019-10-11 中山市铧禧电子科技有限公司 A kind of system and method calculating reduced heat input using air
CN110319463B (en) * 2019-08-09 2024-03-19 中山市铧禧电子科技有限公司 System and method for calculating heat load by using air
KR20220020133A (en) * 2020-08-11 2022-02-18 주식회사 포스코 Apparatus for treating waste gas
CN114046528A (en) * 2021-11-02 2022-02-15 中国船舶重工集团公司第七0三研究所 Boiler fuel temperature control method

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