CN106288831A - A kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method - Google Patents

Abstract

nullThe open one pair of the present invention takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method，During mainly for sintering circular-cooler waste heat recovery，Under conditions of not possessing and directly measuring and take wind flow，Indirectly obtain the method that sintering circular-cooler waste heat boiler takes wind flow，Carry out taking wind flow measurement including choosing the wind pipeline that takes of two different temperatures in central cooler，Wherein corresponding first pipeline of wind flow that takes taking wind pipeline takes wind flow，Another root takes the wind flow correspondence second pipe that takes of wind pipeline and takes wind flow，Concrete measuring method is，Obtain valid data，Calculate waste heat boiler effectively utilizes heat、Sintering circular-cooler waste heat boiler import flue gas total flow、Waste heat boiler import flue gas enthalpy、Sintering circular-cooler the first pipeline takes wind enthalpy and sintering circular-cooler second pipe takes wind enthalpy，Final acquisition sintering circular-cooler waste heat boiler first、Two pipelines take wind flow.

Description

A kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement 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 flexible measurement 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 The floor space of system requirements is relatively big, and actual site condition the most all ratios relatively limited (especially transformation project), the most just lead Cause to take wind to the pipeline of waste heat boiler it is difficult to ensure that longer straight length from central cooler chimney.And still further aspect, due to flue gas Amount (air quantity) is relatively big, cause central cooler take wind pipeline caliber very big (large-scale central cooler take wind pipeline caliber be even as high as 3～ 4m), and flow measurement has for the length of front and back's straight length and compares strict requirements, and engineering site is difficult to meet thus Take the measuring requirement of wind flow, inevitably result in and take wind flow measurement result and greatly deviate from actual value, thus lose effectiveness.

And still further aspect, take wind single channel sintering circular-cooler Transforming Engineering at the most wide variety of pair In, it sometimes appear that take that the straight length of wind pipeline is long and waste heat boiler intake header of after flue gas collects has certain straight length Situation (i.e. take wind pipeline flow is difficult to directly measure and waste heat boiler import flue gas total flow can be measured), for this kind of double Take wind single channel sintering circular-cooler residual neat recovering system, build a central cooler and take wind flow measuring method, do not possess Under the conditions of measured directly by other Acquire parameters indirectlies double take wind single channel sintering circular-cooler waste heat boiler take wind flow, Operation monitoring and operation adjustment for waste heat boiler provide infallible data, have important Practical significance.

Summary of the invention

For the problems referred to above, the present invention provides a kind of based on the metering of waste heat boiler import flue gas total flow pair to take wind single-pass Road sintering circular-cooler waste heat boiler takes wind flow flexible measurement method.

For reaching above-mentioned purpose, the present invention couple takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow hard measurement side Method, described method includes:

Choose that central cooler two takes in wind pipeline wherein one takes wind pipeline is the first pipeline, another root pipeline is second Pipeline；

Wherein corresponding first pipeline of wind flow that takes of the first pipeline takes wind flow, second pipe take wind flow correspondence second Pipeline takes wind flow, and concrete measuring method is:

Obtain superheat steam flow, superheated steam enthalpy, feedwater enthalpy, utilize the data obtained to calculate effective profit of waste heat boiler By heat；

Sintering circular-cooler waste heat boiler import flue gas total flow under acquisition virtual condition, local atmospheric pressure, sintered ring are cold Machine waste heat boiler import flue gas pressures, sintering circular-cooler waste heat boiler input gas temperature, utilize the data obtained to calculate standard Sintering circular-cooler waste heat boiler import flue gas total flow under state；

Take the dry air under the volume accounting of steam in the flue gas in wind pipeline, waste heat boiler input gas temperature Under steam enthalpy under enthalpy, waste heat boiler input gas temperature and sintering circular-cooler first and second pipeline wind temperature Steam enthalpy under dry air enthalpy and sintering circular-cooler first and second pipeline wind temperature, utilizes the described data meter obtained Calculate waste heat boiler import flue gas enthalpy, sintering circular-cooler the first pipeline takes wind enthalpy and sintering circular-cooler second pipe takes wind enthalpy Value；

Take according to waste heat boiler import flue gas total flow, waste heat boiler import flue gas enthalpy, sintering circular-cooler the first pipeline Wind enthalpy, sintering circular-cooler second pipe take wind enthalpy, calculate, with the calculation of loop iteration, the burning obtained under standard state Knot central cooler waste heat boiler the first pipeline takes sintering circular-cooler waste heat boiler second pipe under wind flow and standard state and takes distinguished and admirable Amount；

The sintered ring under wind flow, standard state is taken according to sintering circular-cooler waste heat boiler the first pipeline under standard state Cold waste heat boiler second pipe takes wind flow, local atmospheric pressure, central cooler the first pipeline take wind pressure, sintering circular-cooler first Pipeline wind temperature, sintering circular-cooler second pipe take wind pressure, sintering circular-cooler second pipe wind temperature calculates and obtains in fact Sintering circular-cooler waste heat boiler the first pipeline under the state of border takes the sintering circular-cooler waste heat boiler under wind flow and virtual condition Second pipe takes wind flow.

It is also preferred that the left a kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, waste heat boiler For single-pressure HGSR, it is thus achieved that waste heat boiler effectively utilize heat calculating formula be:

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；

h_gsFor feedwater enthalpy, kJ/kg；

Or waste heat boiler is double pressure waste heat boilers, it is thus achieved that waste heat boiler effectively utilizes the calculating formula of heat to be:

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；

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

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

h_gsFor feedwater enthalpy, kJ/kg；

It is also preferred that the left a kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, described calculating Sintering circular-cooler waste heat boiler import flue gas total flow under standard state, utilizes the calculating formula to be:

Wherein,

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

V_AlwaysFor the sintering circular-cooler waste heat boiler import flue gas total flow under virtual condition, Nm³/h；

p_aFor local atmospheric pressure, Pa；

p_inFor sintering circular-cooler waste heat boiler import flue gas pressures, Pa；

t_inFor sintering circular-cooler waste heat boiler input gas temperature, DEG C；

It is also preferred that the left a kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, described calculating Waste heat boiler import flue gas enthalpy and sintering circular-cooler the first pipeline take wind enthalpy and sintering circular-cooler second pipe takes wind enthalpy Concretely comprising the following steps of value:

1) 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 waste heat boiler；

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

For waste heat boiler errors, can be taken as setting value；

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；

2) calculating waste heat boiler import flue gas enthalpy, the calculating formula of utilization is:

Wherein,

H_inFor waste heat boiler import flue gas 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；

3) calculate sintering circular-cooler first and second pipeline and take wind enthalpy:

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

Wherein,

H₁Wind enthalpy, kJ/Nm is taken for sintering circular-cooler the first pipeline³；

H₂Wind enthalpy, kJ/Nm is taken for sintering circular-cooler second pipe³；

h_gk,1For the dry air enthalpy under sintering circular-cooler the first pipeline wind temperature, kJ/Nm³；

h_gk,2For the dry air enthalpy under sintering circular-cooler second pipe wind temperature, kJ/Nm³；

For the steam enthalpy under sintering circular-cooler the first pipeline wind temperature, kJ/Nm³；

For the steam enthalpy under sintering circular-cooler second pipe wind temperature, kJ/Nm³；

It is also preferred that the left a kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, described basis Waste heat boiler import flue gas total flow and waste heat boiler import flue gas enthalpy and sintering circular-cooler first and second pipeline take wind enthalpy Value, takes wind flow with sintering circular-cooler waste heat boiler first and second pipeline that the calculation of loop iteration calculates under standard state Concretely comprise the following steps:

1) sintering circular-cooler waste heat boiler the first pipeline set under a standard state takes wind flow V₁ ⁰；

2) wind flow V is taken according to sintering circular-cooler the first pipeline under the standard state set₁ ⁰Obtain under standard state Sintering circular-cooler waste heat boiler second pipe takes wind flowThe calculating formula utilized is:

Wherein,

Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under standard state³/h；

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

V₁ ⁰Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under the standard state of setting³/h；

3) take wind enthalpy according to described sintering circular-cooler the first pipeline, sintering circular-cooler second pipe takes wind enthalpy, waste heat Sintering circular-cooler waste heat boiler second pipe under boiler inlet flue gas enthalpy, standard state takes under wind flow and standard state Sintering circular-cooler waste heat boiler import flue gas total flow calculate sintering circular-cooler waste heat boiler the first pipeline under standard state Take wind flowThe calculating formula utilized is

Wherein,

Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under calculated standard state³/h；

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

Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under standard state³/h；

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

H₁Wind enthalpy, kJ/Nm is taken for sintering circular-cooler the first pipeline³；

H₂Wind enthalpy, kJ/Nm is taken for sintering circular-cooler second pipe³；

4) preset a threshold epsilon, sintering circular-cooler waste heat boiler the first pipeline calculated under the standard state obtained is taken wind FlowWind flow V is taken with sintering circular-cooler waste heat boiler the first pipeline under the standard state set₁ ⁰Compare:

IfSintering circular-cooler waste heat boiler the first pipeline then obtained under standard state takes wind flow And the sintering circular-cooler waste heat boiler second pipe under standard state takes wind flow；

IfThen willAnd V₁ ⁰Meansigma methods as the sintered ring under the standard state of new setting Cold waste heat boiler the first pipeline takes wind flow, returns step 1)；

It is also preferred that the left a kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, described basis Sintering circular-cooler waste heat boiler the first pipeline under standard state takes the sintering circular-cooler waste heat under wind flow and standard state Sintering circular-cooler waste heat boiler the first pipeline that boiler second pipe takes under wind flow acquisition virtual condition takes wind flow and reality Sintering circular-cooler waste heat boiler second pipe under state takes wind flow；The calculating formula utilized is:

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

Wherein,

V₁Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under virtual condition³/h；

V₁ ⁰Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under standard state³/h；

p_aFor local atmospheric pressure, Pa；

p_f,1Wind pressure, Pa is taken for sintering circular-cooler the first pipeline；

t_f,1For sintering circular-cooler the first pipeline wind temperature, DEG C；

V₂Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under virtual condition³/h；

Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under standard state³/h；

p_f,2Wind pressure, Pa is taken for sintering circular-cooler second pipe；

t_f,2For sintering circular-cooler second pipe wind temperature, DEG C；

It is also preferred that the left a kind of double wind single channel sintering circular-cooler waste heat boiler that takes takes wind flow flexible measurement method, described first Pipeline correspondence high temperature section takes wind pipeline, and second pipe correspondence low-temperature zone takes wind pipeline；Or, described first pipeline correspondence low-temperature zone takes Wind pipeline, second pipe correspondence high temperature section takes wind pipeline.

The present invention couple takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, takes wind single-pass for double Road 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 burns That ties central cooler waste heat boiler takes wind flow, does not the most possess the straight length condition required by flow measurement, and then causes taking Wind flow cannot directly be measured or certainty of measurement cannot ensure in the case of especially effective, result can be the operation of waste heat boiler Monitor and operation adjustment provides infallible data, 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, and 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 pipeline correspondence high temperature section takes wind pipeline, and second pipe correspondence low-temperature zone takes wind pipeline, then the first pipeline Taking wind flow is that high temperature section takes wind flow, and it is that low-temperature zone takes wind flow that second pipe takes wind flow, and measuring method is:

1. gather the service data of sintering circular-cooler waste heat boiler, including: waste heat boiler import flue gas total flow, waste heat pot Stove input gas temperature, waste heat boiler import flue gas pressures, central cooler high temperature section wind temperature, central cooler high temperature section take blast Power, central cooler low-temperature zone wind temperature, central cooler low-temperature zone take wind pressure, 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. the input data that pair step 1 obtains carry out pretreatment, process and data smoothing processing including bad point, 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, calculate 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 waste heat boiler；D_grFor superheat steam flow, kg/h；h_grFor waste heat boiler mistake Vapours enthalpy, kJ/kg, calculated by waste heat boiler superheated steam pressure and superheat steam temperature or tabled look-up and obtain；h_gsFor waste heat Boiler feedwater enthalpy, kJ/kg, calculated by waste heat boiler feed pressure and feed temperature or tabled 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 waste heat boiler；D_gr1For waste heat boiler high pressure section superheat steam flow, kg/ h；h_gr1For waste heat boiler high pressure section superheated steam enthalpy, kJ/kg, by waste heat boiler high pressure section superheated steam pressure and high pressure section Superheat steam temperature calculates or tables look-up and obtains；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, waste heat boiler low pressure stage superheated steam pressure and low pressure stage superheat steam temperature calculate Or table look-up and obtain；h_gsFor waste heat boiler Enthalpy of Feed Water, kJ/kg, calculated by waste heat boiler feed pressure and feed temperature or tabled look-up Obtain；

Sintering circular-cooler waste heat boiler import flue gas total flow under 3.2 calculating standard state:

Wherein,For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；V_AlwaysFor reality Sintering circular-cooler waste heat boiler import flue gas total flow under state, Nm³/h；p_aFor local atmospheric pressure, Pa；p_inCold for sintered ring Machine waste heat boiler import flue gas pressures, Pa；t_inFor sintering circular-cooler waste heat boiler input gas temperature, DEG C；

3.3 calculate volume accounting k taking 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 is effectively utilized for waste heat boiler, kJ/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 Coefficient, can be taken as setting value；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat boiler Input 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, Calculated by smoke temperature at outlet of waste heat boiler or table look-up and obtain；For the steam enthalpy under waste heat boiler input gas temperature Value, 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；

3.4 calculate cigarette wind enthalpy

3.4.1 calculating waste heat boiler import flue gas enthalpy:

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

Wherein, H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；K is to take the body of steam in the flue gas in wind pipeline Long-pending accounting,；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat boiler import flue gas Temperature computation or table look-up obtains；For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat pot Stove input gas temperature calculates or tables look-up and obtains；

3.4.2 calculate sintering circular-cooler high temperature section and take wind enthalpy and sintering circular-cooler low-temperature zone takes wind enthalpy:

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

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

Wherein, H_hWind enthalpy, kJ/Nm is taken for sintering circular-cooler high temperature section³；H_lWind enthalpy is taken for sintering circular-cooler low-temperature zone, kJ/Nm³；K is the volume accounting taking steam in the flue gas in wind pipeline,；h_gk,hFor sintering circular-cooler high temperature section wind temperature Under dry air enthalpy, kJ/Nm³, sintering circular-cooler high temperature section wind temperature calculate or table look-up and obtain；h_gk,lCold for sintered ring Dry air enthalpy under machine low-temperature zone wind temperature, kJ/Nm³, sintering circular-cooler low-temperature zone wind temperature calculate or table look-up Arrive；For the steam enthalpy under sintering circular-cooler high temperature section wind temperature, kJ/Nm³, sintering circular-cooler high temperature section take Air temperature calculates or tables look-up and obtains；For the steam enthalpy under sintering circular-cooler low-temperature zone wind temperature, kJ/Nm³, by burning Knot central cooler low-temperature zone wind temperature calculates or tables look-up and obtains；

3.5 take distinguished and admirable by the sintering circular-cooler waste heat boiler high temperature section under iterative computation acquisition standard state and low-temperature zone Amount:

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

3.5.2 the sintering circular-cooler waste heat boiler low-temperature zone being calculated under standard state takes wind flow V_l ⁰:

Wherein, V_l ⁰Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler low-temperature zone under standard state³/h；For standard Sintering circular-cooler waste heat boiler import flue gas total flow under state, Nm³/h；V_h ⁰For the sintering circular-cooler waste heat under standard state Boiler high temperature section takes wind flow, Nm³/h；

3.5.3 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；

3.5.4 the sintering circular-cooler waste heat boiler high temperature section under standard state step 3.5.3 obtained takes wind flowWith the supposition of step 3.5.1Contrast:

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 flowWind flow V is taken with the sintering circular-cooler waste heat boiler low-temperature zone under standard state_l ⁰；

If the difference of the two not in the range of setting, then willWithMeansigma methods take wind as new high temperature section Flow setting value, then re-executes step 3.5.1～step 3.5.4；

3.6 utilize the sintering circular-cooler waste heat boiler high temperature section under the standard state that iterative computation obtains to take wind flow and mark Sintering circular-cooler waste heat boiler low-temperature zone under quasi-state takes wind flow and calculates the sintering circular-cooler waste heat boiler under virtual condition High temperature section takes the sintering circular-cooler waste heat boiler low-temperature zone under wind flow and virtual condition and takes wind flow:

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

$V_l=\frac{101325}{p_a+p_{f,l}}\frac{(t_{f,l}+273)}{273}{V}_l^0$

Wherein, V_hWind flow, Nm is taken for the sintering circular-cooler waste heat boiler high temperature section under virtual condition³/h；For standard Sintering circular-cooler waste heat boiler high temperature section under state takes wind flow, Nm³/h；Pa is local atmospheric pressure, Pa；p_f,hFor sintered ring Cold high temperature section takes wind pressure, Pa；t_f,hFor sintering circular-cooler high temperature section wind temperature, DEG C；V_lFor the sintered ring under virtual condition Cold waste heat boiler low-temperature zone takes wind flow, Nm³/h；V_l ⁰Wind is taken for the sintering circular-cooler waste heat boiler low-temperature zone under standard state Flow, Nm³/h；p_f,lWind pressure, Pa is taken for sintering circular-cooler low-temperature zone；t_f,lFor sintering circular-cooler low-temperature zone wind temperature, DEG C；

Embodiment two

Described first pipeline correspondence low-temperature zone takes wind pipeline, and second pipe correspondence high temperature section takes wind pipeline, then the first pipeline Taking wind flow is that low-temperature zone takes wind flow, and it is that high temperature section takes wind flow that second pipe takes wind flow, and measuring method is:

1. gather the on-line operation data of sintering circular-cooler waste heat boiler, including: waste heat boiler import flue gas total flow, remaining Heat boiler input gas temperature, waste heat boiler import flue gas pressures, central cooler high 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, 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. the input data that pair step 1 obtains carry out pretreatment, process and data smoothing processing including bad point, 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, calculate 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 waste heat boiler；D_grFor superheat steam flow, kg/h；h_grFor waste heat boiler mistake Vapours enthalpy, kJ/kg, calculated by waste heat boiler superheated steam pressure and superheat steam temperature or tabled look-up and obtain；h_gsFor waste heat Boiler feedwater enthalpy, kJ/kg, calculated by waste heat boiler feed pressure and feed temperature or tabled 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 waste heat boiler；D_gr1For waste heat boiler high pressure section superheat steam flow, kg/ h；h_gr1For waste heat boiler high pressure section superheated steam enthalpy, kJ/kg, by waste heat boiler high pressure section superheated steam pressure and high pressure section Superheat steam temperature calculates or tables look-up and obtains；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, waste heat boiler low pressure stage superheated steam pressure and low pressure stage superheat steam temperature calculate Or table look-up and obtain；h_gsFor waste heat boiler Enthalpy of Feed Water, kJ/kg, calculated by waste heat boiler feed pressure and feed temperature or tabled look-up Obtain；

Sintering circular-cooler waste heat boiler import flue gas total flow under 3.2 calculating standard state:

Wherein,For the sintering circular-cooler waste heat boiler import flue gas total flow under standard state, Nm³/h；V_AlwaysFor reality Sintering circular-cooler waste heat boiler import flue gas total flow under state, Nm³/h；p_aFor local atmospheric pressure, Pa；p_inCold for sintered ring Machine waste heat boiler import flue gas pressures, Pa；t_inFor sintering circular-cooler waste heat boiler input gas temperature, DEG C；

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 is effectively utilized for waste heat boiler, kJ/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 Coefficient, can be taken as setting value；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat boiler Input 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, Calculated by smoke temperature at outlet of waste heat boiler or table look-up and obtain；For the steam enthalpy under waste heat boiler input gas temperature Value, 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；

3.4 calculate cigarette wind enthalpy

3.4.1 calculating waste heat boiler import flue gas enthalpy:

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

Wherein, H_inFor waste heat boiler import flue gas enthalpy, kJ/Nm³；K is to take the body of steam in the flue gas in wind pipeline Long-pending accounting,；h_gk,inFor the dry air enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat boiler import flue gas Temperature computation or table look-up obtains；For the steam enthalpy under waste heat boiler input gas temperature, kJ/Nm³, by waste heat pot Stove input gas temperature calculates or tables look-up and obtains；

3.4.2 calculate sintering circular-cooler high temperature section and take wind enthalpy and sintering circular-cooler low-temperature zone takes wind enthalpy:

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

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

Wherein, H_hWind enthalpy, kJ/Nm is taken for sintering circular-cooler high temperature section³；H_lWind enthalpy is taken for sintering circular-cooler low-temperature zone, kJ/Nm³；K is the volume accounting taking steam in the flue gas in wind pipeline,；h_gk,hFor sintering circular-cooler high temperature section wind temperature Under dry air enthalpy, kJ/Nm³, sintering circular-cooler high temperature section wind temperature calculate or table look-up and obtain；h_gk,lCold for sintered ring Dry air enthalpy under machine low-temperature zone wind temperature, kJ/Nm³, sintering circular-cooler low-temperature zone wind temperature calculate or table look-up Arrive；For the steam enthalpy under sintering circular-cooler high temperature section wind temperature, kJ/Nm³, sintering circular-cooler high temperature section take Air temperature calculates or tables look-up and obtains；For the steam enthalpy under sintering circular-cooler low-temperature zone wind temperature, kJ/Nm³, by burning Knot central cooler low-temperature zone wind temperature calculates or tables look-up and obtains；

3.5 take distinguished and admirable by the sintering circular-cooler waste heat boiler high temperature section under iterative computation acquisition standard state and low-temperature zone Amount:

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

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

Wherein,Wind flow, kJ/Nm is taken for the sintering circular-cooler waste heat boiler high temperature section under standard state³；For standard Sintering circular-cooler waste heat boiler import flue gas total flow under state, Nm³/h；V_l ⁰For the sintering circular-cooler waste heat under standard state Boiler low-temperature section takes wind flow, Nm³/h；

3.5.3 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；For the burning under standard state Knot 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 sintering Central cooler high temperature section takes wind enthalpy, kJ/Nm³；H_lWind enthalpy is taken for sintering circular-cooler low-temperature zone, wherein,For under standard state Sintering circular-cooler waste heat boiler high temperature section take wind flow, Nm³/h；Enter for the sintering circular-cooler waste heat boiler under standard state Mouth flue gas total flow, Nm³/h；V_l ⁰Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler low-temperature zone under standard state³/h；

3.5.4 the sintering circular-cooler waste heat boiler low-temperature zone under standard state step 3.5.3 obtained takes wind flowThe V supposed with step 3.5.1_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 ⁰Wind flow is taken with the sintering circular-cooler waste heat boiler high temperature section under standard state

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 3.5.1～step 3.5.4；

3.6 utilize the sintering circular-cooler waste heat boiler high temperature section under the standard state that iterative computation obtains to take wind flow and mark Sintering circular-cooler waste heat boiler low-temperature zone under quasi-state takes wind flow and calculates the sintering circular-cooler waste heat boiler under virtual condition High temperature section takes the sintering circular-cooler waste heat boiler low-temperature zone under wind flow and virtual condition and takes wind flow:

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

$V_l=\frac{101325}{p_a+p_{f,l}}\frac{(t_{f,l}+273)}{273}{V}_l^0$

Wherein, V_hWind flow, Nm is taken for the sintering circular-cooler waste heat boiler high temperature section under virtual condition³/h；For 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；V_lCold for the sintered ring under virtual condition Machine waste heat boiler low-temperature zone takes wind flow, Nm³/h；V_l ⁰Take distinguished and admirable for the sintering circular-cooler waste heat boiler low-temperature zone under standard state Amount, Nm³/h；p_f,lWind pressure, Pa is taken for sintering circular-cooler low-temperature zone；t_f,lFor sintering circular-cooler low-temperature zone 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 (7)

1. one kind double take wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, it is characterised in that described side Method includes, choose that central cooler two takes in wind pipeline wherein one takes wind pipeline is the first pipeline, another root pipeline is second Pipeline；

Wherein corresponding first pipeline of wind flow that takes of the first pipeline takes wind flow, second pipe take wind flow correspondence second pipe Taking wind flow, concrete measuring method is:

Obtain superheat steam flow, superheated steam enthalpy, feedwater enthalpy, utilize the data obtained to calculate effective utilization of waste heat boiler Heat；

Obtain more than the sintering circular-cooler waste heat boiler import flue gas total flow under virtual condition, local atmospheric pressure, sintering circular-cooler Heat boiler import flue gas pressures, sintering circular-cooler waste heat boiler input gas temperature, utilize the data obtained to calculate standard state Under sintering circular-cooler waste heat boiler import flue gas total flow；

Take the dry air enthalpy under the volume accounting of steam in the flue gas in wind pipeline, waste heat boiler input gas temperature Dry under value, steam enthalpy under waste heat boiler input gas temperature and sintering circular-cooler first and second pipeline wind temperature Steam enthalpy under air enthalpy and sintering circular-cooler first and second pipeline wind temperature, utilizes the described data obtained to calculate Waste heat boiler import flue gas enthalpy, sintering circular-cooler the first pipeline take wind enthalpy and sintering circular-cooler second pipe takes wind enthalpy；

Wind enthalpy is taken according to waste heat boiler import flue gas total flow, waste heat boiler import flue gas enthalpy, sintering circular-cooler the first pipeline Value, sintering circular-cooler second pipe take wind enthalpy, calculate, with the calculation of loop iteration, the sintered ring obtained under standard state Cold waste heat boiler the first pipeline takes sintering circular-cooler waste heat boiler second pipe under wind flow and standard state and takes wind flow；

The sintering circular-cooler under wind flow, standard state is taken according to sintering circular-cooler waste heat boiler the first pipeline under standard state Waste heat boiler second pipe takes wind flow, local atmospheric pressure, central cooler the first pipeline take wind pressure, sintering circular-cooler the first pipeline Wind temperature, sintering circular-cooler second pipe take wind pressure, sintering circular-cooler second pipe wind temperature calculates and obtains actual shape Under state, sintering circular-cooler waste heat boiler the first pipeline takes sintering circular-cooler waste heat boiler second pipe under wind flow and virtual condition Take wind flow.

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, its Be characterised by: waste heat boiler is single-pressure HGSR, it is thus achieved that waste heat boiler effectively utilize heat calculating formula be:

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；

h_gsFor feedwater enthalpy, kJ/kg；

Or described waste heat boiler is double pressure waste heat boilers, it is thus achieved that waste heat boiler effectively utilizes the calculating formula of heat to be:

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；

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

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

h_gsFor feedwater enthalpy, kJ/kg.

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, its It is characterised by, the sintering circular-cooler waste heat boiler import flue gas total flow under described calculating standard state, utilize the calculating formula to be:

Wherein,

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

V_AlwaysFor the sintering circular-cooler waste heat boiler import flue gas total flow under virtual condition, Nm³/h；

p_aFor local atmospheric pressure, Pa；

p_inFor sintering circular-cooler waste heat boiler import flue gas pressures, Pa；

t_inFor sintering circular-cooler waste heat boiler input gas temperature, DEG C.

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, its It is characterised by, described calculating waste heat boiler import flue gas enthalpy and sintering circular-cooler the first pipeline takes wind enthalpy and sintered ring is cold Machine second pipe takes concretely comprising the following steps of wind enthalpy:

1) 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 waste heat 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；

2) calculating waste heat boiler import flue gas enthalpy, the calculating formula of utilization is:

Wherein,

H_inFor waste heat boiler import flue gas 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；

3) calculate sintering circular-cooler first and second pipeline and take wind enthalpy:

Wherein,

H₁Wind enthalpy, kJ/Nm is taken for sintering circular-cooler the first pipeline³；

H₂Wind enthalpy, kJ/Nm is taken for sintering circular-cooler second pipe³；

h_gk,1For the dry air enthalpy under sintering circular-cooler the first pipeline wind temperature, kJ/Nm³；

h_gk,2For the dry air enthalpy under sintering circular-cooler second pipe wind temperature, kJ/Nm³；

For the steam enthalpy under sintering circular-cooler the first pipeline wind temperature, kJ/Nm³；

For the steam enthalpy under sintering circular-cooler second pipe wind temperature, kJ/Nm³。

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, its It is characterised by, described according to waste heat boiler import flue gas total flow and waste heat boiler import flue gas enthalpy with sintering circular-cooler One, two pipelines take wind enthalpy, with the calculation of loop iteration calculate the sintering circular-cooler waste heat boiler first under standard state, Two pipelines take concretely comprising the following steps of wind flow:

1) sintering circular-cooler waste heat boiler the first pipeline set under a standard state takes wind flow V₁ ⁰；

2) wind flow V is taken according to sintering circular-cooler the first pipeline under the standard state set₁ ⁰Obtain the sintering under standard state Central cooler waste heat boiler second pipe takes wind flowThe calculating formula utilized is:

Wherein,

Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under standard state³/h；

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

V₁ ⁰Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under the standard state of setting³/h；

3) take wind enthalpy according to described sintering circular-cooler the first pipeline, sintering circular-cooler second pipe takes wind enthalpy, waste heat boiler Sintering circular-cooler waste heat boiler second pipe under import flue gas enthalpy, standard state takes the burning under wind flow and standard state Sintering circular-cooler waste heat boiler the first pipeline that knot central cooler waste heat boiler import flue gas total flow calculates under standard state takes wind FlowThe calculating formula utilized is

Wherein,

Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under calculated standard state³/h；

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

Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under standard state³/h；

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

H₁Wind enthalpy, kJ/Nm is taken for sintering circular-cooler the first pipeline³；

H₂Wind enthalpy, kJ/Nm is taken for sintering circular-cooler second pipe³；

4) preset a threshold epsilon, sintering circular-cooler waste heat boiler the first pipeline calculated under the standard state obtained is taken wind flowWind flow V is taken with sintering circular-cooler waste heat boiler the first pipeline under the standard state set₁ ⁰Compare:

IfThen obtain sintering circular-cooler waste heat boiler the first pipeline under standard state take wind flow and Sintering circular-cooler waste heat boiler second pipe under standard state takes wind flow；

IfThen willAnd V₁ ⁰Meansigma methods as the sintering circular-cooler under the standard state of new setting Waste heat boiler the first pipeline 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 flexible measurement method, its It is characterised by, described takes under wind flow and standard state according to sintering circular-cooler waste heat boiler the first pipeline under standard state Sintering circular-cooler waste heat boiler second pipe take the sintering circular-cooler waste heat boiler first that wind flow obtains under virtual condition and manage The sintering circular-cooler waste heat boiler second pipe that road takes under wind flow and virtual condition takes wind flow；The calculating formula utilized is:

Wherein,

V₁Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under virtual condition³/h；

V₁ ⁰Wind flow, Nm is taken for sintering circular-cooler waste heat boiler the first pipeline under standard state³/h；

p_aFor local atmospheric pressure, Pa；

p_f,lWind pressure, Pa is taken for sintering circular-cooler the first pipeline；

t_f,lFor sintering circular-cooler the first pipeline wind temperature, DEG C；

V₂Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under virtual condition³/h；

Wind flow, Nm is taken for the sintering circular-cooler waste heat boiler second pipe under standard state³/h；

p_f,2Wind pressure, Pa is taken for sintering circular-cooler second pipe；

t_f,2For sintering circular-cooler second pipe wind temperature, DEG C.

The most according to claim 1 pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method, its Being characterised by, described first pipeline correspondence high temperature section takes wind pipeline, and second pipe correspondence low-temperature zone takes wind pipeline；Or, described One pipeline correspondence low-temperature zone takes wind pipeline, and second pipe correspondence high temperature section takes wind pipeline.