CN106323020A - Wind pickup flow measuring method for double-pickup single-channel sintering circular cooler waste heat boiler - Google Patents

Abstract

The invention discloses a wind pickup flow measuring method for a double-pickup single-channel sintering circular cooler waste heat boiler. The method is mainly designed for the purpose that when waste heat recovery of the sintering circular cooler is conducted, pickup flows of the sintering circular cooler waste heat boiler are indirectly obtained while the condition of direct measuring of the pickup flows does not exist. The method comprises the steps that one of two pickup pipelines of the circular cooler is selected as a first pickup pipeline, the other pipeline is selected as a second pickup pipeline, the pickup flow of the first pickup pipeline is obtained through measuring, and the pickup flow of the second pickup pipeline is obtained through calculating and data are obtained, the effectively utilized heat of the waste heat boiler, and the pickup flow of the first pickup pipeline of the sintering circular cooler waste heat boiler under the standard state are calculated, the inlet flue gas enthalpy value of the sintering circular cooler waste heat boiler and pickup enthalpy values of the first and second pickup pipelines of the sintering circular cooler are solved, and the pickup flow of the second pickup pipeline of the sintering circular cooler waste heat boiler is finally obtained.

Description

Double wind single channel sintering circular-cooler waste heat boilers that take take wind flow measuring method

Technical field

The present invention relates to the sintering art of steel and iron industry, particularly relate to a kind of pair and take wind single channel sintering circular-cooler waste heat pot Stove takes wind flow measuring method.

Background technology

In steel manufacture process, sintering circuit energy consumption is only second to Iron-smelting, account for iron and steel produce total energy consumption 10%～ 12%, and in sintering circuit, the heat entering air with the form of sintering device flue gas and cooling machine waste gas sensible heat accounts for agglomerant About the 50% of sequence total energy consumption.Owing to the temperature of sintering circular-cooler waste gas is the highest, substantially 150～450 DEG C, add waste heat before this The limitation of recovery technology, sintering circular-cooler waste gas residual heat reclaims long-term only the acquisition in the large-scale steel mill of minority of project and applies.

In recent years, along with the development of low temperature exhaust heat recovery technology, the cost of the waste heat recovery project of steel industry and investment Being greatly lowered, the efficiency of waste-heat recovery device significantly improves simultaneously, and large quantities of middle-size and small-size iron and steel enterprises waste heat that starts the most one after another returns Receipts project, sintering circular-cooler waste heat boiler is widely applied, and especially gets at Current resource growing tension and environmental requirement Come under the highest situation, more can highlight its economic benefit and social benefit.

For sintering circular-cooler residual neat recovering system, it is most basic that central cooler waste heat recovery section takes air quantity (exhaust gas volumn) Initial conditions, be also one of the main monitoring parameter run of residual neat recovering system, but, due to sintering circular-cooler waste heat recovery System requirements floor space is relatively big, and actual site condition the most all ratios relatively limited (especially transformation project), take wind for double For single channel (central cooler high temperature section and central cooler low-temperature zone two sections take wind) system, it is difficult to ensure that two sections take wind pipeline and can have Longer straight length, often occurring in which one in Practical Project, to take wind pipeline longer, and another root to take wind pipeline shorter Situation.And still further aspect, owing to exhaust gas volumn (air quantity) is relatively big, cause central cooler to take very big (the large-scale central cooler of wind pipeline caliber The wind pipeline caliber that takes be even as high as 3～4m), and flow measurement has strict the wanting of comparison for the length of front and back's straight length Asking, engineering site is difficult to meet the flow measurement requirement taking wind pipeline (that root the shortest takes wind pipeline) thus, this Inevitably result in and take wind flow measurement result and greatly deviate from actual value, thus lose effectiveness.

Therefore, double wind single channel sintering circular-cooler residual neat recovering system, structure are taken at present wide variety of in engineering Build a sintering circular-cooler and take wind flow measuring method, the most do not possess measured directly under the conditions of by other parameters indirect Obtain double take wind single channel sintering circular-cooler waste heat boiler take wind flow, operation monitoring and operation adjustment for waste heat boiler carry For infallible data, there is important Practical significance.

Summary of the invention

For the problems referred to above, the present invention provides one to obtain and double take wind single channel sintering circular-cooler waste heat boiler and take wind Flow double take wind single channel sintering circular-cooler waste heat boiler and take wind flow measuring method.

For reaching above-mentioned purpose, the present invention couple takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, Including, choose that central cooler two takes in wind pipeline wherein one take wind pipeline and take wind pipeline as first, another root pipeline is made It is second to take wind pipeline；

Measure first take wind pipeline take wind flow；

Calculate second take wind pipeline take wind flow, specifically include following steps:

According to waste heat boiler soda pop side operational factor obtain waste heat boiler effectively utilize heat；

Take wind pipeline according to the sintering circular-cooler waste heat boiler first under the virtual condition measured and take wind flow acquisition standard Sintering circular-cooler waste heat boiler first under state takes wind pipeline and takes wind flow；

Effectively utilize the sintering circular-cooler waste heat boiler first under heat, standard state to take wind pipeline according to waste heat boiler and take wind Flow, waste heat boiler errors, waste heat boiler input gas temperature, smoke temperature at outlet of waste heat boiler, sintering circular-cooler One take wind pipeline wind temperature, sintering circular-cooler second takes the wind pipeline wind temperature calculation with loop iteration, solves mark Sintering circular-cooler waste heat boiler second under quasi-state takes wind pipeline and takes wind flow；

Take wind pipeline according to the sintering circular-cooler waste heat boiler second under standard state to take under wind flow calculating virtual condition Sintering circular-cooler waste heat boiler second take wind pipeline and take wind flow.

It is also preferred that the left double wind single channel sintering circular-cooler waste heat boilers that take take wind flow measuring method, waste heat boiler is single pressure Waste heat boiler, described according to waste heat boiler soda pop side operational factor obtain waste heat boiler effectively utilize heat, the calculating formula of utilization For:

Q_l=D_gr(h_gr-h_gs), wherein,

Q_lHeat, kJ/h is effectively utilized for waste heat boiler；

D_grFor waste heat boiler superheat steam flow, kg/h

h_grFor waste heat boiler superheated steam enthalpy, kJ/kg；

h_gsFor waste heat boiler Enthalpy of Feed Water, kJ/kg；

Or waste heat boiler is double pressure waste heat boilers, described obtain waste heat boiler according to waste heat boiler soda pop side operational factor Effectively utilizing heat, the calculating formula of utilization is:

Q_l=D_gr1(h_gr1-h_gs)+D_gr2(h_gr2-h_gs), wherein,

Q_lHeat, kJ/h is effectively utilized for waste heat boiler；

D_gr1For waste heat boiler high pressure section superheat steam flow, kg/h；

h_gr1For high pressure section superheated steam enthalpy, kJ/kg；

D_gr2For waste heat boiler low pressure stage superheat steam flow, kg/h；

h_gr2For waste heat boiler low pressure stage superheated steam enthalpy, kJ/kg；

h_gsFor waste heat boiler Enthalpy of Feed Water, kJ/kg.

It is also preferred that the left double wind single channel sintering circular-cooler waste heat boilers that take take wind flow measuring method, described according to measuring Sintering circular-cooler waste heat boiler first under virtual condition takes wind pipeline and takes the sintering circular-cooler under wind flow acquisition standard state Waste heat boiler first takes wind pipeline and takes wind flow, and calculating formula is:

Wherein,

V₁ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler first under standard state and take wind flow, Nm³/h；

V₁Take wind pipeline for the sintering circular-cooler waste heat boiler first under virtual condition and take wind flow, Nm³/h；

p_aFor local atmospheric pressure, Pa；

p_f,1Take wind pipeline for sintering circular-cooler first and take wind pressure, Pa；

t_f,1Wind pipeline wind temperature is taken for sintering circular-cooler first, DEG C.

It is also preferred that the left double wind single channel sintering circular-cooler waste heat boilers that take take wind flow measuring method, described according to waste heat pot Stove effectively utilizes the sintering circular-cooler waste heat boiler first under heat, standard state to take wind pipeline and takes wind flow, waste heat boiler thermal protection Coefficient, waste heat boiler input gas temperature, smoke temperature at outlet of waste heat boiler, sintering circular-cooler first take wind pipeline and take pathogenic wind-warm Degree, sintering circular-cooler second take the wind pipeline wind temperature calculation with loop iteration, solve the sintered ring under standard state Cold waste heat boiler second takes wind pipeline and takes wind flow, concretely comprises the following steps:

1) set the sintering circular-cooler waste heat boiler second under a standard state to take wind pipeline and take wind flow V₂ ⁰；

2) take wind pipeline according to the sintering circular-cooler second under the standard state set and take wind flow V₂ ⁰Obtain standard state Under sintering circular-cooler waste heat boiler import flue gas total flowThe calculating formula utilized is:

Wherein,

For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；

V₁ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler first under standard state and take wind flow, Nm³/h；

V₂ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler second under standard state and take wind flow, Nm³/h

3) calculating takes volume accounting k of steam in the flue gas in wind pipeline, and the calculating formula of utilization is:

Wherein,

K is the volume accounting taking steam in the flue gas in wind pipeline,；

Q_lHeat, kJ/h is effectively utilized for boiler；

For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；

For waste heat boiler errors；

h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

h_gk,outFor the dry air enthalpy under smoke temperature at outlet of waste heat boiler, kJ/Nm³；

For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

For the steam enthalpy under smoke temperature at outlet of waste heat boiler, kJ/Nm³；

4) calculate sintering circular-cooler waste heat boiler import flue gas enthalpy, sintering circular-cooler first take wind pipeline take wind enthalpy with And sintering circular-cooler second takes wind pipeline and takes wind enthalpy, the calculating formula of utilization is:

$H_{in}=(1-k)h_{gk,in}+{\mathrm{kh}}_{H_{2}O,in}$

$H_1=(1-k)h_{gk,1}+{\mathrm{kh}}_{H_{2}O,1}$

Wherein,

H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；

H₁Take wind pipeline for sintering circular-cooler first and take wind enthalpy, kJ/Nm³；

H₂Take wind pipeline for sintering circular-cooler second and take wind enthalpy, kJ/Nm³；

K is the volume accounting taking steam in the flue gas in wind pipeline,；

h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

h_gk,1The dry air enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler first³；

The steam enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler first³；

h_gk,2The dry air enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler second³；

The steam enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler second³；

5) the sintering circular-cooler waste heat boiler second under calculating standard state takes wind pipeline and takes wind flowThe meter utilized Formula is

Wherein,

Take wind pipeline for the sintering circular-cooler waste heat boiler second under calculated standard state and take wind flow, Nm³/h；

For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；

V₁ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler first under standard state and take wind flow, Nm³/h；

H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；

H₁Take wind pipeline for sintering circular-cooler first and take wind enthalpy, kJ/Nm³；

H₂Take wind pipeline for sintering circular-cooler second and take wind enthalpy, kJ/Nm³；

6) preset a threshold epsilon, the sintering circular-cooler waste heat boiler second calculated under the standard state obtained is taken wind pipeline Take wind flowTake wind pipeline with the sintering circular-cooler waste heat boiler second under the standard state set and take wind flow V₂ ⁰Carry out Relatively:

IfThen the sintering circular-cooler waste heat boiler second under acquisition standard state takes wind pipeline and takes wind Flow；

IfThen willAnd V₂ ⁰Meansigma methods as the sintered ring under the standard state of new setting Cold waste heat boiler second takes wind pipeline and takes wind flow, returns step 1)；

It is also preferred that the left double wind single channel sintering circular-cooler waste heat boilers that take take wind flow measuring method, described according to standard shape Sintering circular-cooler waste heat boiler second under state takes wind pipeline and takes the sintering circular-cooler waste heat pot under wind flow calculating virtual condition Stove second takes wind pipeline and takes wind flow, and calculating formula is:

Wherein,

V₂Take wind pipeline for the sintering circular-cooler waste heat boiler second under virtual condition and take wind flow, Nm³/h；

V₂ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler second under standard state and take wind flow, Nm³/h；

p_aFor local atmospheric pressure, Pa；

p_f,2Take wind pipeline for sintering circular-cooler second and take wind pressure, Pa；

t_f,2Wind pipeline wind temperature is taken for sintering circular-cooler second, DEG C.

It is also preferred that the left double wind single channel sintering circular-cooler waste heat boilers that take take wind flow measuring method, described first takes airduct Road takes wind flow correspondence high temperature section and takes wind flow, and second takes wind pipeline takes wind flow correspondence low-temperature zone and take wind flow；Or, described One takes wind pipeline takes wind flow correspondence low-temperature zone and takes wind flow, and second takes wind pipeline takes wind flow correspondence high temperature section and take wind flow.

The present invention couple takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, takes wind single channel for double Sintering circular-cooler waste heat boiler takes the measurement of wind flow, indirectly obtains double wind single channel that takes by waste heat boiler service data and sinters Central cooler waste heat boiler take wind flow, the most do not possess the straight length condition required by flow measurement, and then cause taking wind Flow cannot directly be measured or certainty of measurement cannot ensure in the case of especially effective, result can be waste heat boiler operation prison Depending on providing infallible data with operation adjustment, there is important Practical significance.

Accompanying drawing explanation

Fig. 1 is sintering circular-cooler waste heat boiler waste heat reclaiming process flow chart；A chassis traffic direction, B feeds, 1 waste heat pot Stove, 2 central cooler high temperature section, 3 central cooler low-temperature zone, 4 central cooler high temperature section take wind pipeline, and 5 central cooler low-temperature zone take wind pipeline, and 6 Waste heat boiler smoke discharging pipe.

Fig. 2 is sintering circular-cooler waste heat boiler waste heat reclaiming process flow chart；A chassis traffic direction, B feeds, 1 waste heat pot Stove, 2 central cooler high temperature section, 3 central cooler low-temperature zone, 4 central cooler high temperature section take wind pipeline, and 5 central cooler low-temperature zone take wind pipeline, and 6 Waste heat boiler smoke discharging pipe.

Detailed description of the invention

Below in conjunction with Figure of description, the present invention will be further described.

Embodiment one

Described first takes wind pipeline takes wind flow correspondence high temperature section and takes wind flow, and second takes wind pipeline, and to take wind flow correspondence low Temperature section takes wind flow, and measuring method is:

1, the service data of sintering circular-cooler waste heat boiler is gathered, including: central cooler high temperature section takes wind flow, central cooler height Temperature section wind temperature, central cooler high temperature section take wind pressure, central cooler low-temperature zone wind temperature, central cooler low-temperature zone take wind pressure, Waste heat boiler input gas temperature, smoke temperature at outlet of waste heat boiler, atmospheric pressure；

Waste heat boiler soda pop side operational factor: single-pressure HGSR includes, superheat steam temperature, superheated steam pressure, mistake Vapours flow, feed temperature, feed pressure, feedwater flow；Double pressure waste heat boilers include, waste heat boiler high pressure section superheated steam Temperature, waste heat boiler high pressure section superheated steam pressure, waste heat boiler high pressure section superheat steam flow, waste heat boiler low pressure stage are overheated Vapor (steam) temperature, waste heat boiler low pressure stage superheated steam pressure, waste heat boiler low pressure stage superheat steam flow, waste heat boiler import are given Coolant-temperature gage, waste heat boiler import feed pressure, waste heat boiler import feedwater flow.

2, to step 1 obtain input data carry out pretreatment, including bad point process and data smoothing processing, obtain for Solve sintering circular-cooler waste heat boiler and take the valid data of wind flow.

3, the valid data obtained according to step 2, obtain sintering circular-cooler waste heat boiler and take wind flow, specifically include following Step:

3.1 calculate waste heat boiler effectively utilizes hot Q_l；

3.1.1 for single-pressure HGSR:

Q_l=D_gr(h_gr-h_gs)

Wherein, Q_lHeat, kJ/h is effectively utilized for boiler；D_grFor superheat steam flow, kg/h；h_grFor superheated steam enthalpy, kJ/ Kg, is calculated by superheated steam pressure and superheat steam temperature or is tabled look-up and obtain；h_gsFor feedwater enthalpy, kJ/kg, by waste heat boiler import Feed pressure and feed temperature calculate or table look-up and obtain；

3.1.2 for double pressure waste heat boilers:

Q_l=D_gr1(h_gr1-h_gs)+D_gr2(h_gr2-h_gs)

Wherein, Q_lHeat, kJ/h is effectively utilized for boiler；D_gr1For high pressure section superheat steam flow, kg/h；h_gr1For high pressure section Superheated steam enthalpy, kJ/kg, calculated by high pressure section superheated steam pressure and high pressure section superheat steam temperature or tabled look-up and obtain；D_gr2For Low pressure stage superheat steam flow, kg/h；h_gr2For low pressure stage superheated steam enthalpy, kJ/kg, by low pressure stage superheated steam pressure and low Pressure section superheat steam temperature calculates or tables look-up and obtains；h_gsFor feedwater enthalpy, kJ/kg, by waste heat boiler import feed pressure and feedwater Temperature computation or table look-up obtains；

The 3.2 sintering circular-cooler waste heat boiler high temperature section calculated under standard state take wind flow V_h ⁰:

$V_h^0=\frac{p_a+p_{f,h}}{101325}\frac{273}{t_{f,h}+273}{V}_h$

Wherein, V_h ⁰Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler high temperature section under standard state³/h；V_hFor reality Sintering circular-cooler waste heat boiler high temperature section under state takes wind flow, Nm³/h；p_sFor local atmospheric pressure, Pa；p_f,hCold for sintered ring Machine high temperature section takes wind pressure, Pa；t_f,hFor sintering circular-cooler high temperature section wind temperature, DEG C；

The 3.3 sintering circular-cooler waste heat boiler low-temperature zone obtained under standard state by iterative computation take wind flow:

3.3.1 the sintering circular-cooler waste heat boiler low-temperature zone set under initial standard state takes wind flow V_l ⁰；

3.3.2 the sintering circular-cooler waste heat boiler import flue gas total flow being calculated under standard state

Wherein,For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；V_h ⁰For standard Sintering circular-cooler waste heat boiler high temperature section under state takes wind flow, Nm³/h；V_l ⁰For the sintering circular-cooler waste heat under standard state Boiler low-temperature section takes wind flow, Nm³/h；

3.3.3 calculate and take volume accounting k of steam in the flue gas in wind pipeline:

Wherein, k is the volume accounting taking steam in the flue gas in wind pipeline,；Q_lHeat, kJ/ is effectively utilized for boiler h；For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；For waste heat boiler thermal protection system Number, can be taken as setting value；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, waste heat boiler enter Mouth flue-gas temperature calculates or tables look-up and obtains；h_gk,outFor the dry air enthalpy under smoke temperature at outlet of waste heat boiler, kJ/Nm³, by Smoke temperature at outlet of waste heat boiler calculates or tables look-up and obtains；For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³, calculated by waste heat boiler input gas temperature or tabled look-up and obtain；For under smoke temperature at outlet of waste heat boiler Steam enthalpy, kJ/Nm³, smoke temperature at outlet of waste heat boiler calculate or table look-up and obtain；

Calculate sintering circular-cooler waste heat boiler import flue gas enthalpy the most respectively, sintering circular-cooler high temperature section takes wind enthalpy And sintering circular-cooler low-temperature zone takes wind enthalpy:

$H_{in}=(1-k)h_{gk,in}+{\mathrm{kh}}_{H_{2}O,in}$

$H_h=(1-k)h_{gk,h}+{\mathrm{kh}}_{H_{2}O,h}$

$H_1=(1-k)h_{gk,1}+{\mathrm{kh}}_{H_{2}O,1}$

Wherein, H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；H_hWind enthalpy, kJ/ is taken for sintering circular-cooler high temperature section Nm³；H_lWind enthalpy, kJ/Nm is taken for sintering circular-cooler low-temperature zone³；K is to take the volume of steam in the flue gas in wind pipeline to account for Ratio,；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat boiler input gas temperature Calculate or table look-up and obtain；For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³, waste heat boiler enter Mouth flue-gas temperature calculates or tables look-up and obtains；h_gk,hFor the dry air enthalpy under sintering circular-cooler high temperature section wind temperature, kJ/Nm³, Calculated by sintering circular-cooler high temperature section wind temperature or tabled look-up and obtain；For under sintering circular-cooler high temperature section wind temperature Steam enthalpy, kJ/Nm³, sintering circular-cooler high temperature section wind temperature calculate or table look-up and obtain；h_gk,lLow for sintering circular-cooler Dry air enthalpy under temperature section wind temperature, kJ/Nm³, sintering circular-cooler low-temperature zone wind temperature calculate or table look-up and obtain；For the steam enthalpy under sintering circular-cooler low-temperature zone wind temperature, kJ/Nm³, sintering circular-cooler low-temperature zone take pathogenic wind-warm Degree calculates or tables look-up and obtains；

3.3.5 the sintering circular-cooler waste heat boiler low-temperature zone calculated under standard state takes wind flow

Wherein,Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler low-temperature zone under calculated standard state³/ h；For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；V_h ⁰For the sintering under standard state Central cooler waste heat boiler high temperature section takes wind flow, Nm³/h；H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；H_hFor sintered ring Cold high temperature section takes wind enthalpy, kJ/Nm³；H_lWind enthalpy, kJ/Nm is taken for sintering circular-cooler low-temperature zone³；

3.3.6 the sintering circular-cooler waste heat boiler low-temperature zone under standard state step 3.3.5 obtained takes wind flowThe V set with step 3.3.1_l ⁰Contrast:

If, the difference of the two set in the range of, then the sintering circular-cooler waste heat boiler low temperature under outputting standard state Section takes wind flow V_l ⁰；

If the difference of the two not in the range of setting, then willWith V_l ⁰Meansigma methods take wind as new low-temperature zone Flow setting value, then re-executes step 3.3.1～step 3.3.6；

The sintering circular-cooler waste heat boiler low-temperature zone that 3.4 are calculated under virtual condition takes wind flow V_l:

$V_1=\frac{101325}{p_a+p_{f,1}}\frac{(t_{f,1}+273)}{273}{V}_1^0$

Wherein, V_lWind flow, Nm is taken for the sintering circular-cooler waste heat boiler low-temperature zone under virtual condition³/h；V_l ⁰For standard Sintering circular-cooler waste heat boiler low-temperature zone under state takes wind flow, Nm³/h；p_aFor local atmospheric pressure, Pa；p_f,lCold for sintered ring Machine low-temperature zone takes wind pressure, Pa；t_f,lFor sintering circular-cooler low-temperature zone wind temperature, DEG C.

Embodiment two

Described first takes wind pipeline takes wind flow correspondence low-temperature zone and takes wind flow, and second takes wind pipeline, and to take wind flow correspondence high Temperature section takes wind flow, and measuring method is:

1, the service data of sintering circular-cooler waste heat boiler is gathered, including: central cooler high temperature section wind temperature, central cooler are high Section takes wind pressure to temperature, central cooler low-temperature zone takes wind flow, central cooler low-temperature zone wind temperature, central cooler low-temperature zone take wind pressure, Waste heat boiler input gas temperature, smoke temperature at outlet of waste heat boiler, atmospheric pressure；

Waste heat boiler soda pop side operational factor: single-pressure HGSR includes, superheat steam temperature, superheated steam pressure, mistake Vapours flow, feed temperature, feed pressure, feedwater flow；Double pressure waste heat boilers include, waste heat boiler high pressure section superheated steam Temperature, waste heat boiler high pressure section superheated steam pressure, waste heat boiler high pressure section superheat steam flow, waste heat boiler low pressure stage are overheated Vapor (steam) temperature, waste heat boiler low pressure stage superheated steam pressure, waste heat boiler low pressure stage superheat steam flow, waste heat boiler import are given Coolant-temperature gage, waste heat boiler import feed pressure, waste heat boiler import feedwater flow.

2, to step 1 obtain input data carry out pretreatment, including bad point process and data smoothing processing, obtain for Solve sintering circular-cooler waste heat boiler and take the valid data of wind flow.

3, the valid data obtained according to step 2, obtain sintering circular-cooler waste heat boiler and take wind flow, specifically include following Step:

3.1 calculate waste heat boiler effectively utilizes hot Q_l；

3.1.1 for single-pressure HGSR:

Q_l=D_gr(h_gr-h_gs)

Wherein, Q_lHeat, kJ/h is effectively utilized for boiler；D_grFor superheat steam flow, kg/h；h_grFor superheated steam enthalpy, kJ/ Kg, is calculated by superheated steam pressure and superheat steam temperature or is tabled look-up and obtain；h_gsFor feedwater enthalpy, kJ/kg, by waste heat boiler import Feed pressure and feed temperature calculate or table look-up and obtain；

3.1.2 for double pressure waste heat boilers:

Q_l=D_gr1(h_gr1-h_gs)+D_gr2(h_gr2-h_gs)

Wherein, Q_lHeat, kJ/h is effectively utilized for boiler；D_gr1For high pressure section superheat steam flow, kg/h；h_gr1For high pressure section Superheated steam enthalpy, kJ/kg, calculated by high pressure section superheated steam pressure and high pressure section superheat steam temperature or tabled look-up and obtain；D_gr2For Low pressure stage superheat steam flow, kg/h；h_gr2For low pressure stage superheated steam enthalpy, kJ/kg, by low pressure stage superheated steam pressure and low Pressure section superheat steam temperature calculates or tables look-up and obtains；h_gsFor feedwater enthalpy, kJ/kg, by waste heat boiler import feed pressure and feedwater Temperature computation or table look-up obtains.

The 3.2 sintering circular-cooler waste heat boiler low-temperature zone calculated under standard state take wind flow V_l ⁰:

$V_1^0=\frac{p_a+p_{f,1}}{101325}\frac{273}{t_{f,1}+273}{V}_1$

Wherein, V_l ⁰Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler low-temperature zone under standard state³/h；V_lFor reality Sintering circular-cooler waste heat boiler low-temperature zone under state takes wind flow, Nm³/h；p_sFor local atmospheric pressure, Pa；p_f,lCold for sintered ring Machine low-temperature zone takes wind pressure, Pa；t_f,lFor sintering circular-cooler low-temperature zone wind temperature, DEG C.

The 3.3 sintering circular-cooler waste heat boiler high temperature section obtained under standard state by iterative computation take wind flow:

3.3.1 the sintering circular-cooler waste heat boiler high temperature section set under initial standard state takes wind flow V_h ⁰；

3.3.2 the sintering circular-cooler waste heat boiler import flue gas total flow being calculated under standard state

Wherein,For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；For standard Sintering circular-cooler waste heat boiler high temperature section under state takes wind flow, Nm³/h；V_l ⁰For the sintering circular-cooler waste heat under standard state Boiler low-temperature section takes wind flow, Nm³/h；

3.3.3 calculate and take volume accounting k of steam in the flue gas in wind pipeline:

Wherein, k is the volume accounting taking steam in the flue gas in wind pipeline,；Q_lHeat, kJ/ is effectively utilized for boiler h；For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；For waste heat boiler thermal protection system Number, can be taken as setting value；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, waste heat boiler enter Mouth flue-gas temperature calculates or tables look-up and obtains；h_gk,outFor the dry air enthalpy under smoke temperature at outlet of waste heat boiler, kJ/Nm³, by Smoke temperature at outlet of waste heat boiler calculates or tables look-up and obtains；For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³, calculated by waste heat boiler input gas temperature or tabled look-up and obtain；For under smoke temperature at outlet of waste heat boiler Steam enthalpy, kJ/Nm³, smoke temperature at outlet of waste heat boiler calculate or table look-up and obtain；

Calculate sintering circular-cooler waste heat boiler import flue gas enthalpy the most respectively, sintering circular-cooler high temperature section takes wind enthalpy And sintering circular-cooler low-temperature zone takes wind enthalpy:

$H_{in}=(1-k)h_{gk,in}+{\mathrm{kh}}_{H_{2}O,in}$

$H_h=(1-k)h_{gk,h}+{\mathrm{kh}}_{H_{2}O,h}$

$H_1=(1-k)h_{gk,1}+{\mathrm{kh}}_{H_{2}O,1}$

Wherein, H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；H_hWind enthalpy, kJ/ is taken for sintering circular-cooler high temperature section Nm³；H_lWind enthalpy, kJ/Nm is taken for sintering circular-cooler low-temperature zone³；K is to take the volume of steam in the flue gas in wind pipeline to account for Ratio,；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat boiler input gas temperature Calculate or table look-up and obtain；For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³, waste heat boiler enter Mouth flue-gas temperature calculates or tables look-up and obtains；h_gk,hFor the dry air enthalpy under sintering circular-cooler high temperature section wind temperature, kJ/Nm³, Calculated by sintering circular-cooler high temperature section wind temperature or tabled look-up and obtain；For under sintering circular-cooler high temperature section wind temperature Steam enthalpy, kJ/Nm³, sintering circular-cooler high temperature section wind temperature calculate or table look-up and obtain；h_gk,lLow for sintering circular-cooler Dry air enthalpy under temperature section wind temperature, kJ/Nm³, sintering circular-cooler low-temperature zone wind temperature calculate or table look-up and obtain；For the steam enthalpy under sintering circular-cooler low-temperature zone wind temperature, kJ/Nm³, sintering circular-cooler low-temperature zone take pathogenic wind-warm Degree calculates or tables look-up and obtains；

3.3.5 the sintering circular-cooler waste heat boiler high temperature section calculated under standard state takes wind flow

Wherein,Wind flow is taken for the sintering circular-cooler waste heat boiler high temperature section under calculated standard state, Nm³/h；For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；V_l ⁰For under standard state Sintering circular-cooler waste heat boiler low-temperature zone takes wind flow, Nm³/h；H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；H_hFor burning Knot central cooler high temperature section takes wind enthalpy, kJ/Nm³；H_lWind enthalpy, kJ/Nm is taken for sintering circular-cooler low-temperature zone³；

3.3.6 the sintering circular-cooler waste heat boiler high temperature section under standard state step 3.3.5 obtained takes wind flowThe V set with step 3.3.1_h ⁰Contrast:

If, the difference of the two set in the range of, then the sintering circular-cooler waste heat boiler high temperature under outputting standard state Section takes wind flow V_h ⁰；

If the difference of the two not in the range of setting, then willWith V_h ⁰Meansigma methods take wind as new high temperature section Flow setting value, then re-executes step 3.3.1～step 3.3.6.

The 3.4 sintering circular-cooler waste heat boiler high temperature section calculated under virtual condition take wind flow V_h:

$V_h=\frac{101325}{p_a+p_{f,h}}\frac{(t_{f,h}+273)}{273}{V}_h^0$

Wherein, V_hWind flow, Nm is taken for the sintering circular-cooler waste heat boiler high temperature section under virtual condition³/h；V_h ⁰For standard Sintering circular-cooler waste heat boiler high temperature section under state takes wind flow, Nm³/h；p_aFor local atmospheric pressure, Pa；p_f,hCold for sintered ring Machine high temperature section takes wind pressure, Pa；t_f,hFor sintering circular-cooler high temperature section wind temperature, DEG C.

Above, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any it is familiar with basis Those skilled in the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, all should contain Within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim is defined.

Claims (6)

1. one kind double take wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, it is characterised in that described method Including, choose that central cooler two takes in wind pipeline wherein one take wind pipeline and take wind pipeline as first, another root pipeline is made It is second to take wind pipeline；

Measure first take wind pipeline take wind flow；

Calculate second take wind pipeline take wind flow, specifically include following steps:

According to waste heat boiler soda pop side operational factor obtain waste heat boiler effectively utilize heat；

Take wind pipeline according to the sintering circular-cooler waste heat boiler first under the virtual condition measured and take wind flow acquisition standard state Under sintering circular-cooler waste heat boiler first take wind pipeline and take wind flow；

Effectively utilize the sintering circular-cooler waste heat boiler first under heat, standard state to take wind pipeline according to waste heat boiler and take distinguished and admirable Amount, waste heat boiler errors, waste heat boiler input gas temperature, smoke temperature at outlet of waste heat boiler, sintering circular-cooler first Take wind pipeline wind temperature, sintering circular-cooler second takes wind pipeline wind temperature and solves standard shape with the calculation of loop iteration Sintering circular-cooler waste heat boiler second under state takes wind pipeline and takes wind flow.

Take wind pipeline according to the sintering circular-cooler waste heat boiler second under standard state and take the burning under wind flow calculating virtual condition Knot central cooler waste heat boiler second takes wind pipeline and takes wind flow.

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, and it is special Levying and be, waste heat boiler is single-pressure HGSR, described having according to waste heat boiler soda pop side operational factor acquisition waste heat boiler Effect utilizes heat, and the calculating formula of utilization is:

Q_l=D_gr(h_gr-h_gs), wherein,

Q_lHeat, kJ/h is effectively utilized for waste heat boiler；

D_grFor waste heat boiler superheat steam flow, kg/h

h_grFor waste heat boiler superheated steam enthalpy, kJ/kg；

h_gsFor waste heat boiler Enthalpy of Feed Water, kJ/kg；

Or waste heat boiler is double pressure waste heat boilers, described obtain the effective of waste heat boiler according to waste heat boiler soda pop side operational factor Utilizing heat, the calculating formula of utilization is:

Q_l=D_gr1(h_gr1-h_gs)+D_gr2(h_gr2-h_gs), wherein,

Q_lHeat, kJ/h is effectively utilized for waste heat boiler；

D_gr1For waste heat boiler high pressure section superheat steam flow, kg/h；

h_gr1For high pressure section superheated steam enthalpy, kJ/kg；

D_gr2For waste heat boiler low pressure stage superheat steam flow, kg/h；

h_gr2For waste heat boiler low pressure stage superheated steam enthalpy, kJ/kg；

h_gsFor waste heat boiler Enthalpy of Feed Water, kJ/kg.；

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, and it is special Levy and be, described according to measure virtual condition under sintering circular-cooler waste heat boiler first take wind pipeline take wind flow obtain mark Sintering circular-cooler waste heat boiler first under quasi-state takes wind pipeline and takes wind flow, and calculating formula is:

Wherein,

V₁ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler first under standard state and take wind flow, Nm³/h；

V₁Take wind pipeline for the sintering circular-cooler waste heat boiler first under virtual condition and take wind flow, Nm³/h；

p_aFor local atmospheric pressure, Pa；

p_f,1Take wind pipeline for sintering circular-cooler first and take wind pressure, Pa；

t_f,1Wind pipeline wind temperature is taken for sintering circular-cooler first, DEG C.

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, and it is special Levy and be, described effectively utilize the sintering circular-cooler waste heat boiler first under heat, standard state to take wind pipeline according to waste heat boiler Take wind flow, waste heat boiler errors, waste heat boiler input gas temperature, smoke temperature at outlet of waste heat boiler, sintered ring cold Machine first takes wind pipeline wind temperature, sintering circular-cooler second takes wind pipeline wind temperature and solves with the calculation of loop iteration Sintering circular-cooler waste heat boiler second under standard state takes wind pipeline and takes wind flow, concretely comprises the following steps:

1) set the sintering circular-cooler waste heat boiler second under a standard state to take wind pipeline and take wind flow

2) take wind pipeline according to the sintering circular-cooler second under the standard state set and take wind flowObtain under standard state Sintering circular-cooler waste heat boiler import flue gas total flowThe calculating formula utilized is:

Wherein,

For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；

V₁ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler first under standard state and take wind flow, Nm³/h；

Take wind pipeline for the sintering circular-cooler waste heat boiler second under the standard state of setting and take wind flow, Nm³/h；

3) calculating takes volume accounting k of steam in the flue gas in wind pipeline, and the calculating formula of utilization is:

Wherein,

K is the volume accounting taking steam in the flue gas in wind pipeline,；

Q_lHeat, kJ/h is effectively utilized for boiler；

For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；

For waste heat boiler errors,；

h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

h_gk,outFor the dry air enthalpy under smoke temperature at outlet of waste heat boiler, kJ/Nm³；

For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

For the steam enthalpy under smoke temperature at outlet of waste heat boiler, kJ/Nm³；

4) calculate sintering circular-cooler waste heat boiler import flue gas enthalpy, sintering circular-cooler first takes wind pipeline and takes wind enthalpy and burning Knot central cooler second takes wind pipeline and takes wind enthalpy, and the calculating formula of utilization is:

$H_{in}=(1-k)h_{gk,in}+{\mathrm{kh}}_{H_{2}O,in}$

$H_1=(1-k)h_{gk,1}+{\mathrm{kh}}_{H_{2}O,1}$

Wherein,

H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；

H₁Take wind pipeline for sintering circular-cooler first and take wind enthalpy, kJ/Nm³；

H₂Take wind pipeline for sintering circular-cooler second and take wind enthalpy, kJ/Nm³；

K is the volume accounting taking steam in the flue gas in wind pipeline,；

h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³；

h_gk,1The dry air enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler first³；

The steam enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler first³；

h_gk,2The dry air enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler second³；

The steam enthalpy under wind pipeline wind temperature, kJ/Nm is taken for sintering circular-cooler second³；

5) the sintering circular-cooler waste heat boiler second under calculating standard state takes wind pipeline and takes wind flowThe calculating formula utilized For

Wherein,

Take wind pipeline for the sintering circular-cooler waste heat boiler second under calculated standard state and take wind flow, Nm³/h；

For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；

V₁ ⁰Take wind pipeline for the sintering circular-cooler waste heat boiler first under standard state and take wind flow, Nm³/h；

H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；

H₁Take wind pipeline for sintering circular-cooler first and take wind enthalpy, kJ/Nm³；

H₂Take wind pipeline for sintering circular-cooler second and take wind enthalpy, kJ/Nm³；

6) preset a threshold epsilon, the sintering circular-cooler waste heat boiler second calculated under the standard state obtained is taken wind pipeline and takes wind FlowTake wind pipeline with the sintering circular-cooler waste heat boiler second under the standard state set and take wind flowCompare:

IfThen the sintering circular-cooler waste heat boiler second under acquisition standard state takes wind pipeline and takes wind flow；

IfThen willWithMeansigma methods as the sintering circular-cooler under the standard state of new setting Waste heat boiler second takes wind pipeline and takes wind flow, returns step 1).

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, and it is special Levy and be, described according to the sintering circular-cooler waste heat boiler second under standard state take wind pipeline take wind flow calculate virtual condition Under sintering circular-cooler waste heat boiler second take wind pipeline and take wind flow, calculating formula is:

Wherein,

V₂Take wind pipeline for the sintering circular-cooler waste heat boiler second under virtual condition and take wind flow, Nm³/h；

Take wind pipeline for the sintering circular-cooler waste heat boiler second under standard state and take wind flow, Nm³/h；

p_aFor local atmospheric pressure, Pa；

p_f,2Take wind pipeline for sintering circular-cooler second and take wind pressure, Pa；

t_f,2Wind pipeline wind temperature is taken for sintering circular-cooler second, DEG C.

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow measuring method, and it is special Levying and be, described first takes wind pipeline takes wind flow correspondence high temperature section and takes wind flow, and second takes wind pipeline, and to take wind flow correspondence low Temperature section takes wind flow；Or, described first takes wind pipeline takes wind flow correspondence low-temperature zone and takes wind flow, and second takes wind pipeline takes distinguished and admirable The corresponding high temperature section of amount takes wind flow.