CN109647123A - Sintering flue gas temprature control method and device for sintering smoke purifying system - Google Patents

Sintering flue gas temprature control method and device for sintering smoke purifying system Download PDF

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Publication number
CN109647123A
CN109647123A CN201710940019.8A CN201710940019A CN109647123A CN 109647123 A CN109647123 A CN 109647123A CN 201710940019 A CN201710940019 A CN 201710940019A CN 109647123 A CN109647123 A CN 109647123A
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China
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temperature
flue gas
sintering flue
indicate
flow
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曾小信
邱立运
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Zhongye Changtian International Engineering Co Ltd
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Zhongye Changtian International Engineering Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0454—Controlling adsorption
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The invention discloses a kind of sintering flue gas temprature control methods and device for sintering smoke purifying system.The sintering flue gas temprature control method includes: the initial temperature for obtaining former sintering flue gas；According to the initial temperature and preset temperature adjustment rule, temperature adjustment is carried out to the former sintering flue gas, so that the temperature into the sintering flue gas in adsorption tower is greater than or equal to preset first temperature, and is less than preset second temperature.The sintering flue gas temprature control method, in the case of different for the temperature of each former sintering flue gas, and the situation that original sintering flue gas temperature is lower, rule can be adjusted according to preset temperature, the temperature of former sintering flue gas is adjusted, so that the temperature into the sintering flue gas in adsorption tower is in always within the scope of suitable temperature, it is no longer single to the temperature adjustment of former sintering flue gas, temperature adjustment result is more accurate, and applicability is more preferable.

Description

Sintering flue gas temprature control method and device for sintering smoke purifying system
Technical field
The present invention relates to sintering gas purifying technical field more particularly to a kind of sintering for sintering smoke purifying system Flue gas temperature control method and device.
Background technique
At present in iron and steel enterprise, the sintering flue gas SO of sintering process generation2And NOx(NO and NO2Deng) account for iron and steel enterprise's dirt The overwhelming majority of total emission volumn is contaminated, caused atmosphere pollution is discharged by sintering flue gas in order to mitigate, it is necessary to carry out to sintering flue gas The purified treatments such as desulfurization and denitration.Iron and steel enterprise generallys use sintering smoke purifying system, in the suction of sintering smoke purifying system Activated carbon adsorption sintering flue gas is held in attached tower, to realize to purified treatments such as the desulfurization and denitration of sintering flue gas.
Sintering smoke purifying system mainly includes that sintering flue gas conveyance conduit, adsorption tower, Analytic Tower and active carbon conveying are set It is standby etc..Wherein, one end of sintering flue gas conveyance conduit is used to be connected to the sintering flue gas discharge end of sintering process, the other end and absorption The sintering flue gas entrance of tower is connected.The original sintering flue gas (referred to as former sintering flue gas) that sintering process generates is defeated from sintering flue gas After sending pipeline to enter adsorption tower, it is adsorbed the activated carbon adsorption held in tower, reaches desulfurization and out of stock clean-up effect.It crosses herein Cheng Zhong, into adsorption tower in the temperature of sintering flue gas must be controlled in certain temperature range.If burnt in into adsorption tower The temperature for tying flue gas is excessively high, and when being based on activated carbon adsorption sintering flue gas, the chemical reaction that surface occurs is exothermic reaction, and is sintered Contain combustibles and oxidizer in the dust that flue gas carries, is easy to cause active carbon spontaneous combustion；If being sintered cigarette in into adsorption tower The temperature of gas is too low, into adsorption tower in the steam temperature that carries in sintering flue gas easily close to set point, be condensed into liquid Water, liquid water in conjunction with oxysulfide after become strong acid, easily corrode device, and make the active carbon and sintering in adsorption tower It is chemically reacted between flue gas, causes seriously to reduce the effect of sintering flue gas desulfurization and denitration.
In the prior art, water injector usually is set on sintering flue gas conveyance conduit, by water injector to sintering cigarette Letter shoot is sprayed water in road, so that the temperature of former sintering flue gas is reduced, so that the temperature into sintering flue gas in adsorption tower will not It is too high.But such temperature control methods are relatively simple, if the former sintering cigarette generated in the course of work by sintering process every time It, can not be by the temperature for the former sintering flue gas that each sintering process generates using such temperature control methods if the temperature of gas is different Degree is accurately adjusted to suitable temperature, and the accuracy of temperature adjustment is lower；In addition, such temperature control methods, right In the lower situation of former sintering flue gas temperature, can not also be regulated and controled.
Therefore, in the prior art, for the sintering flue gas temprature control method of sintering smoke purifying system, original is sintered The situation that flue-gas temperature is lower, each course of work Central Plains sintering flue gas temperature is different, the accuracy of control is lower, applicability It is poor.
Summary of the invention
The present invention provides a kind of sintering flue gas temprature control methods and device for sintering smoke purifying system, with solution Certainly in the prior art, for the sintering flue gas temprature control method of sintering smoke purifying system, for former sintering flue gas temperature compared with The different situation of the temperature of low, each course of work Central Plains sintering flue gas, the accuracy of control is lower, and applicability is poor to ask Topic.
In a first aspect, the present invention provides a kind of sintering flue gas temprature control method for sintering smoke purifying system, The sintering flue gas temprature control method includes: the initial temperature for obtaining former sintering flue gas；According to the initial temperature and preset Temperature adjustment rule carries out temperature adjustment to the former sintering flue gas, so that the temperature into the sintering flue gas in adsorption tower is big In or be equal to preset first temperature, and be less than preset second temperature.
Further, rule is adjusted according to the initial temperature and preset temperature, temperature is carried out to the former sintering flue gas The process of adjustment, specifically includes: defeated into sintering flue gas conveyance conduit if the initial temperature is less than preset first temperature Hot steam is sent, the temperature of the former sintering flue gas is improved；Or, if the initial temperature is greater than or equal to default first temperature Degree, and be less than preset second temperature, then keep the temperature-resistant of the former sintering flue gas；Or, if the initial temperature is big In or be equal to the preset second temperature, and be less than default third temperature, then conveyed into the sintering flue gas conveyance conduit Cold wind or spray cold water reduce the temperature of the former sintering flue gas；Or, if the initial temperature is greater than or equal to described default the Three temperature, then transporting cold wind and spray cold water into the sintering flue gas conveyance conduit, reduce the temperature of the former sintering flue gas.
Further, the process that hot steam is conveyed into sintering flue gas conveyance conduit, specifically includes: according to following default first Discharge relation formula calculates first flow, conveys hot steam into sintering flue gas conveyance conduit with the first flow；Wherein, F1Indicate the first flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default the One normal temperature, default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T1Indicate the initial temperature, Tg indicates the temperature of the hot steam, η1Indicate the heat exchange efficiency of the hot steam.
Further, transporting cold wind or the process of spray cold water in Xiang Suoshu sintering flue gas conveyance conduit, specifically include: under It states default second flow relational expression and calculates second flow, conveyed with the second flow into the sintering flue gas conveyance conduit cold Wind,Wherein, F2Indicate the second flow, F0Indicate the flow of the former sintering flue gas, T0Indicate pre- If the first normal temperature, default first normal temperature is greater than the preset first temperature, and is less than described default second Temperature, T4Indicate to be set to the temperature of sintering flue gas at the 4th temperature detecting point on sintering flue gas conveyance conduit, described in Ta expression The temperature of cold wind, η2Indicate the heat exchange efficiency of the cold wind；Or, calculating third stream according to following default third discharge relation formulas Amount, sprays cold water into the sintering flue gas conveyance conduit with the third flow,Wherein, F3Indicate institute State third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, default first standard Temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Expression is set to sintering flue gas delivery pipe On road at the 4th temperature detecting point sintering flue gas temperature, Tw indicates the temperature of the cold water, η3Indicate the heat exchange of the cold water Efficiency.
Further, transporting cold wind and the process for spraying cold water in Xiang Suoshu sintering flue gas conveyance conduit, specifically include: under It states default 4th discharge relation formula and calculates the 4th flow, conveyed with the 4th flow into the sintering flue gas conveyance conduit cold Wind,Wherein, F4Indicate the 4th flow, F0Indicate the flow of the former sintering flue gas, T0' indicate Default second normal temperature, default second normal temperature is greater than default 4th temperature, and is less than the default third temperature Degree, T1Indicate the initial temperature, Ta indicates the temperature of the cold wind, η2Indicate the heat exchange efficiency of the cold wind；Detect setting In the temperature of sintering flue gas is greater than default 4th temperature at third temperature detecting point on sintering flue gas conveyance conduit, and it is small When the default third temperature, calculate third flows according to following default third discharge relation formulas, with the third flow to Cold water is sprayed in the sintering flue gas conveyance conduit,Wherein, F3Indicate the third flow, F0Indicate institute State the flow of former sintering flue gas, T0Indicate default first normal temperature, default first normal temperature is greater than described default the One temperature, and it is less than the preset second temperature, T4Expression is set to the 4th temperature detecting point on sintering flue gas conveyance conduit Locate the temperature of sintering flue gas, Tw indicates the temperature of the cold water, η3Indicate the heat exchange efficiency of the cold water.
Second aspect, the present invention also provides a kind of sintering flue gas temperature for sintering smoke purifying system to control dress It sets, which includes: that initial temperature obtains module, for obtaining the initial temperature of former sintering flue gas； Temperature adjusts module, for adjusting rule according to the initial temperature and preset temperature, carries out temperature to the former sintering flue gas Degree adjustment so that the temperature into the sintering flue gas in adsorption tower is greater than or equal to preset first temperature, and is less than default the Two temperature.
Further, the temperature adjustment module includes: the first temperature adjustment unit, if be less than for the initial temperature Preset first temperature then conveys hot steam into sintering flue gas conveyance conduit, improves the temperature of the former sintering flue gas；Second temperature Adjustment unit is spent, if being greater than or equal to the preset first temperature for the initial temperature, and is less than default second temperature Degree then keeps the temperature-resistant of the former sintering flue gas；Third temperature adjustment unit, if be greater than for the initial temperature or Equal to the preset second temperature, and it is less than default third temperature, then the transporting cold wind into the sintering flue gas conveyance conduit Or spray cold water, reduce the temperature of the former sintering flue gas；4th temperature adjustment unit, if be greater than for the initial temperature or Equal to the default third temperature, then transporting cold wind and spray cold water into the sintering flue gas conveyance conduit, reduce the former burning Tie the temperature of flue gas.
Further, the first temperature adjustment unit is specific to wrap for conveying hot steam into sintering flue gas conveyance conduit Include: the first temperature adjustment unit is used to calculate first flow according to following default first flow relational expressions, with described first Flow conveys hot steam into sintering flue gas conveyance conduit；Wherein, F1Indicate the first flow, F0 Indicate the flow of the former sintering flue gas, T0Indicate that default first normal temperature, default first normal temperature are greater than described Preset first temperature, and it is less than the preset second temperature, T1Indicate the initial temperature, Tg indicates the temperature of the hot steam Degree, η1Indicate the heat exchange efficiency of the hot steam.
Further, it is cold to be used for transporting cold wind or spray into the sintering flue gas conveyance conduit for the third temperature adjustment unit Water specifically includes: the third temperature adjustment unit is used to calculate second flow according to following default second flow relational expressions, with Second flow transporting cold wind into the sintering flue gas conveyance conduit,Wherein, F2Indicate described Two flows, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, default first normal temperature Greater than the preset first temperature, and it is less than the preset second temperature, T4Expression is set on sintering flue gas conveyance conduit The temperature of sintering flue gas at 4th temperature detecting point, Ta indicate the temperature of the cold wind, η2Indicate the heat exchange efficiency of the cold wind； Or, calculate third flows according to following default third discharge relation formulas, with the third flow to the sintering flue gas delivery pipe Cold water is sprayed in road,Wherein, F3Indicate the third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, default first normal temperature is greater than the preset first temperature, and is less than described Preset second temperature, T4Indicate the temperature for being set to sintering flue gas at the 4th temperature detecting point on sintering flue gas conveyance conduit, Tw Indicate the temperature of the cold water, η3Indicate the heat exchange efficiency of the cold water.
Further, the 4th temperature adjustment unit is used for the transporting cold wind into the sintering flue gas conveyance conduit and sprays cold Water specifically includes: the 4th temperature adjustment unit is used to calculate the 4th flow according to following default 4th discharge relation formulas, with 4th flow transporting cold wind into the sintering flue gas conveyance conduit,Wherein, F4Described in expression 4th flow, F0Indicate the flow of the former sintering flue gas, T0' indicate default second normal temperature, the default second standard temperature Degree is greater than default 4th temperature, and is less than the default third temperature, T1Indicate the initial temperature, Ta indicates the cold wind Temperature, η2Indicate the heat exchange efficiency of the cold wind；It detects and is set to third temperature detecting point on sintering flue gas conveyance conduit When locating the temperature of sintering flue gas greater than default 4th temperature, and being less than the default third temperature, according to following default Third discharge relation formula calculates third flow, sprays cold water into the sintering flue gas conveyance conduit with the third flow,Wherein, F3Indicate the third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default First normal temperature, default first normal temperature are greater than the preset first temperature, and are less than default second temperature Degree, T4Indicate the temperature for being set to sintering flue gas at the 4th temperature detecting point on sintering flue gas conveyance conduit, Tw indicates described cold The temperature of water, η3Indicate the heat exchange efficiency of the cold water.
The technical solution that the embodiment of the present invention provides can include the following benefits: the present invention provides one kind to be used for The sintering flue gas temprature control method and device of sintering smoke purifying system.In the sintering flue gas temprature control method, by obtaining The initial temperature for taking former sintering flue gas adjusts rule according to preset temperature, divides situation to original according to the different values of initial temperature The temperature of sintering flue gas is adjusted, in this way, in the case of different for the temperature of each former sintering flue gas, and former sintering flue gas The lower situation of temperature can adjust rule according to preset temperature, be adjusted to the temperature of former sintering flue gas, so that into The temperature of sintering flue gas in adsorption tower is in always within the scope of suitable temperature.It follows that the sintering flue gas temperature controls Method, no longer single to the temperature adjustment of former sintering flue gas, temperature adjustment result is more accurate, and applicability is more preferable.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, letter will be made to attached drawing needed in the embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor, It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of sintering smoke purifying system provided in an embodiment of the present invention；
Fig. 2 is a kind of sintering flue gas temprature control method for sintering smoke purifying system provided in an embodiment of the present invention Flow diagram；
Fig. 3 is a kind of sintering flue gas temperature control equipment for sintering smoke purifying system provided in an embodiment of the present invention Structural block diagram.
Specific embodiment
In conjunction with background technique it is found that in the existing sintering flue gas temprature control method for sintering smoke purifying system, It would generally be cooled down to former sintering flue gas, by spraying into cooling water into sintering flue gas conveyance conduit so that into adsorption tower In the temperature of sintering flue gas will not be too high.If the temperature of the former sintering flue gas generated in each course of work by sintering process If difference, the temperature of former sintering flue gas can not be adjusted to suitable temperature using such temperature control methods, temperature The accuracy for spending adjustment is lower；In addition, such temperature adjusting method can not in the case of lower for former sintering flue gas temperature yet Regulated and controled.In order to solve this problem, the present invention provides a kind of sintering flue gas temperature for sintering smoke purifying system Control method and device.
With reference to the accompanying drawing, the sintering flue gas temperature control provided by the present invention for sintering smoke purifying system is discussed in detail Method and device processed.
Introduce provided by the present invention for sintering smoke purifying system sintering flue gas temprature control method and device it Before, a kind of sintering smoke purifying system provided by the invention is introduced first.This can be implemented using the sintering smoke purifying system The sintering flue gas temprature control method for sintering smoke purifying system provided is provided.
With reference to Fig. 1, shown in fig. 1 is a kind of structural representation of sintering smoke purifying system provided in an embodiment of the present invention Figure.In conjunction with Fig. 1 it is found that the sintering smoke purifying system includes: adsorption tower 100, sintering flue gas conveyance conduit 200 and control device (not shown)；One end of sintering flue gas conveyance conduit 200 is used to be connected to the sintering flue gas discharge end of sintering process (in figure not Show), the other end is connected with the sintering flue gas entrance of adsorption tower 100, the original sintering flue gas for generating sintering process It is delivered in adsorption tower 100 and carries out purified treatment；On sintering flue gas conveyance conduit 200, from sintering flue gas conveyance conduit 200 with The connected one end of the sintering flue gas discharge end of sintering process to one end being connected with the sintering flue gas entrance of adsorption tower 100, successively It is provided with former gas baffle 1, flow detection point 2, the first temperature detecting point 3, steam heater 4, second temperature test point 5 is cold Wind input port 6, third temperature detecting point 7, booster fan 8, cold water input unit 9, the 4th temperature detecting point 10 and ammonia Input port 11.
Wherein, control device can control former gas baffle 1 and open or close, after former gas baffle 1 is opened, from agglomerant The former sintering flue gas that sequence generates can be flowed from the sintering flue gas discharge end of sintering process into adsorption tower 100, former gas baffle 1 After closing, the former sintering flue gas generated from sintering process stops the sintering flue gas discharge end from sintering process into adsorption tower 100 Flowing.
First flowmeter 12 is installed on flow detection point 2, for the flow of sintering flue gas at measuring flow test point 2, The flow is also the flow of former sintering flue gas；First temperature sensor 13 is installed, for measuring the in first temperature detecting point 3 The temperature of sintering flue gas at one temperature detecting point 3, the temperature are also the temperature of former sintering flue gas.
Steam heater 4 is connected to sintering flue gas conveyance conduit 200, and former sintering flue gas is along sintering flue gas conveyance conduit During 200 flow to adsorption tower 100 from the sintering flue gas outlet side of sintering process, the steam heater 4 is flowed through.Steam heating Steam conveying pipe 14 is installed, which can convey hot steam, convection current into steam heater 4 on device 4 Sintering flue gas through steam heater 4 is heated, and second flowmeter 15 is equipped on steam conveying pipe 14, control device can To pass through the flow of hot steam in the control input steam heater 4 of second flowmeter 15.
Second temperature sensor 16 is installed on second temperature test point 5, is sintered at second temperature test point 5 for measuring The temperature of flue gas；Third temperature sensor 17 is installed, for measuring at third temperature detecting point 7 in third temperature detecting point 7 The temperature of sintering flue gas；The 4th temperature sensor 18 is installed in 4th temperature detecting point 10, for measuring the 4th temperature detection The temperature of sintering flue gas at point 10.
Cold wind conveyance conduit 19 is installed on cold wind input port 6, it is cold for being conveyed into sintering flue gas conveyance conduit 200 Wind cools down to the sintering flue gas in sintering flue gas conveyance conduit 200；Be equipped on cold wind conveyance conduit 19 cold blast sliding valve 20, Third flowmeter 21 and the 5th temperature sensor 22；Control device can control cold blast sliding valve 20 and open or close, and need to sintering In smoke conveying duct 200 when transporting cold wind, control device controls cold blast sliding valve 20 and opens, and stops to sintering flue gas conveyance conduit In 200 when transporting cold wind, control device controls cold blast sliding valve 20 and closes；Control device can also be controlled by third flowmeter 21 to The flow of transporting cold wind in sintering flue gas conveyance conduit 200；5th temperature sensor 22 is used to measure the temperature of cold wind.
Cold water input unit 9 is connected to sintering flue gas conveyance conduit 200, and former sintering flue gas is along sintering flue gas conveyance conduit During 200 flow to adsorption tower 100 from the sintering flue gas outlet side of sintering process, the cold water input unit 9 is flowed through.Cold water is defeated The cold water conveyance conduit 24 for entering to be provided with water jet 23 on device 9 and being connected to water jet 23 is installed on cold water conveyance conduit 24 There is the 4th flowmeter 25；Cold water conveyance conduit 24 and water jet 23 are for spraying into cold water into cold water input unit 9, thus convection current Sintering flue gas through the cold water input unit 9 cools down；Control device can be controlled defeated by cold water by the 4th flowmeter 25 The flow for sending pipeline 24 to spray into cold water into sintering flue gas conveyance conduit 200.
Booster fan 8 can reduce or eliminate the resistance encountered when sintering flue gas conveys in sintering flue gas conveyance conduit 200 Power.Ammonia conveyance conduit 26 is installed on ammonia input port 11, be equipped on ammonia conveyance conduit 26 gas mixer 27 with And the air pipeline 28 and ammonia pipeline 29 being connected with gas mixer 27；The air that is inputted from air pipeline 28 and from ammonia The ammonia that pipeline 29 inputs is mixed in gas mixer 27, and dilution ammonia is generated after mixing, and dilution ammonia is defeated from ammonia Send pipeline 26 to be transported in sintering flue gas conveyance conduit 200, to the sintering flue gas in sintering flue gas conveyance conduit 200 carry out into The cooling of one step is handled, so that the temperature into the sintering flue gas in adsorption tower 100 further decreases 1~5 DEG C.
In addition, control device can also obtain first flowmeter 12, the first temperature sensor 13, second temperature sensor 16, the respective measurement values in third temperature sensor 17, the 4th temperature sensor 18 and the 5th temperature sensor 22.
Referring to fig. 2, Fig. 2 shows be a kind of sintering cigarette for sintering smoke purifying system provided in an embodiment of the present invention The flow diagram of gas temprature control method.In conjunction with Fig. 2 it is found that the sintering flue gas temprature control method includes the following steps:
Step 101, the initial temperature for obtaining former sintering flue gas.
When needing to carry out purified treatment to the former sintering flue gas that sintering process generates, sintering shown in fig. 1 can be used Flue gas purification system, by the sintering flue gas discharge end of the sintering flue gas conveyance conduit of the sintering smoke purifying system and sintering process It is connected, opens former gas baffle (such as the original gas baffle shown in Fig. 1 being set on sintering flue gas conveyance conduit later 1) can start to carry out purified treatment to the former sintering flue gas that sintering process generates.
In conjunction with aforementioned background art it is found that during carrying out purified treatment to former sintering flue gas, need to be sintered original The temperature of flue gas is regulated and controled so that into sintering flue gas in adsorption tower temperature within the scope of a suitable temperature.So After carrying out purified treatment to former sintering flue gas and starting, the initial temperature of former sintering flue gas is obtained first (herein, by agglomerant The temperature of former sintering flue gas that the sintering flue gas discharge end of sequence is discharged and without excess temperature regulation is defined as initial temperature).
When it is implemented, the implementation for obtaining the initial temperature of former sintering flue gas may include following two realization side Formula:
The first implementation can refer to the set-up mode of Fig. 1, after the former gas baffle of sintering flue gas conveyance conduit The first temperature sensor is installed in first temperature detecting point on side, the first temperature detection is flowed through using the first temperature sensor measurement The transient temperature of sintering flue gas, reads the transient temperature value detected from the first temperature sensor later, can obtain at point The initial temperature of former sintering flue gas, the value of the initial temperature of former sintering flue gas are the transient temperature value.
Second of implementation can refer to the set-up mode of Fig. 1, after the former gas baffle of sintering flue gas conveyance conduit The first temperature sensor is installed in first temperature detecting point on side, using the first temperature sensor measurement in preset period of time It is interior, the transient temperature of had sintering flue gas at the first temperature detecting point is flowed through, multiple transient temperature values are generated, is passed from the first temperature This multiple transient temperature value is read in sensor, this multiple transient temperature value is ranked up from small to large, is removed before sequence is located at 1~3, side and it is located at the transient temperature value of back 1~3, the average temperature value of remaining transient temperature value is calculated, by the average temperature Initial temperature of the angle value as former sintering flue gas.Wherein, preset period of time can be set to 5~15s, be preferably set to 10s.It adopts The initial temperature that former sintering flue gas is obtained with such implementation, can be to avoid the transient temperature measured value due to former sintering flue gas Unusual fluctuations, cause system frequently adjust equipment in system operating status (such as adjustment cold blast sliding valve unlatching or relationship, with And unlatching or relationship for adjusting steam heater or cold water input unit etc.), cause the problem of adjusting disorder.
Step 102 adjusts rule according to the initial temperature and preset temperature, carries out temperature to the former sintering flue gas Adjustment so that the temperature into the sintering flue gas in adsorption tower is greater than or equal to preset first temperature, and is less than default second Temperature.
It, can be according to the different values of the initial temperature of former sintering flue gas after the initial temperature for getting former sintering flue gas Range adjusts rule according to preset temperature, is adjusted, specifically includes to the temperature of former sintering flue gas:
If the initial temperature is less than preset first temperature, hot steam is conveyed into sintering flue gas conveyance conduit, is mentioned The temperature of the high former sintering flue gas；Or,
If the initial temperature is greater than or equal to the preset first temperature, and is less than preset second temperature, then protect Hold the temperature-resistant of the former sintering flue gas；Or,
If the initial temperature is greater than or equal to the preset second temperature, and be less than default third temperature, then to Transporting cold wind or spray cold water in the sintering flue gas conveyance conduit, reduce the temperature of the former sintering flue gas；Or,
If the initial temperature is greater than or equal to the default third temperature, into the sintering flue gas conveyance conduit Transporting cold wind and spray cold water reduce the temperature of the former sintering flue gas.
Wherein, preset first temperature, preset second temperature and default third temperature can according to practical condition into Row setting.For example, preset first temperature can be set as to 110 DEG C, preset second temperature is set as 145 DEG C, it will default the Three temperature are set as 180 DEG C.
It, can be by sintering if the initial temperature got in step 101 is less than preset first temperature based on this The mode that hot steam is conveyed in smoke conveying duct improves the temperature of the former sintering flue gas.When it is implemented, to sintering flue gas The process that hot steam is conveyed in conveyance conduit, can realize: in the following manner with reference to the set-up mode of Fig. 1, in sintering flue gas Steam heater (such as steam heater 4 shown in fig. 1) is set on conveyance conduit, heat is conveyed into the steam heater and is steamed Vapour conveys hot steam into sintering flue gas conveyance conduit, and when conveying hot steam into steam heater, according to following Default first flow relational expression, i.e., following relational expressions (1) calculate first flow, by adjusting the steaming for being set to steam heater Second flowmeter (such as second flowmeter 15 shown in fig. 1) on vapour conveyance conduit steams the heat for inputting the steam heater The flow of vapour is adjusted to the first flow, conveys hot steam into the steam heater with the first flow:
In relational expression (1):
F1Indicate the first flow, unit is cube m/h (m3/h)；
F0Indicate the flow of the former sintering flue gas, unit is cube m/h (m3/h)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
Tg indicates that the temperature of the hot steam, unit are degree Celsius (DEG C)；
η1Indicate the heat exchange efficiency of the hot steam.
Wherein, F0Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, in sintering flue gas conveyance conduit Flow detection point at install first flowmeter (such as first flowmeter 12 shown in fig. 1), using the first flowmeter measure The flow of sintering flue gas at flow detection point reads the flow value detected in first flowmeter later, can be obtained former sintering The flow of flue gas, the value of the flow of former sintering flue gas are the flow value.
It in the embodiment of the present invention, is learnt according to practical production experience, the temperature of sintering flue gas is greater than or equal in adsorption tower Preset first temperature (110 DEG C), and when being less than preset second temperature (145 DEG C), the temperature of sintering flue gas is in adsorption tower , both will not be too high within the scope of suitable temperature, it will not be too low.Default first normal temperature T0For preset first temperature and preset A temperature in second temperature range, that is, default first normal temperature T0Greater than the preset first temperature, and it is less than institute State preset second temperature.For example, the first normal temperature T can will be preset0It is set as 130 DEG C.
The value of Tg can be detected by temperature sensor and be obtained, η1Can be according to practical condition, it will be in actual production The value of the heat exchange efficiency of the hot steam used be pre-stored within implement the sintering flue gas temprature control method control device (such as Above-mentioned control device) in, when the sintering flue gas temprature control method is embodied, directly reading is inside control device It can；It can also be obtained from system.
If the initial temperature got in step 101 is greater than or equal to the preset first temperature, and is less than default Second temperature then keeps the temperature-resistant of the former sintering flue gas.That is, if the initial temperature obtained in step 101 be greater than or Equal to preset first temperature, and less than if preset second temperature, it is defeated former sintering flue gas directly can be passed through into sintering flue gas It send pipeline to carry out purified treatment into adsorption tower, carries out any regulation processing without the temperature to former sintering flue gas.
If the initial temperature got in step 101 is greater than or equal to the preset second temperature, and is less than default Third temperature can reduce the temperature of the former sintering flue gas by following two ways:
First way, transporting cold wind in Xiang Suoshu sintering flue gas conveyance conduit.When it is implemented, to the sintering flue gas The process of transporting cold wind in conveyance conduit, can realize in the following manner:
With reference to the set-up mode of Fig. 1, cold wind conveyance conduit is installed on the cold wind input port of sintering flue gas conveyance conduit (such as cold wind conveyance conduit 19 shown in fig. 1), provides cold wind conveyance conduit to device with cold wind and is connected to, and opens cold wind delivery pipe Cold blast sliding valve on the road transporting cold wind into sintering flue gas conveyance conduit, and in the transporting cold wind into sintering flue gas conveyance conduit When, according to following default second flow relational expressions, i.e., following relational expressions (2) calculate second flow, by adjusting cold wind is set to Third flowmeter (such as third flowmeter 21 shown in fig. 1) on conveyance conduit, will be cold in input sintering flue gas conveyance conduit The flow of wind is adjusted to the second flow, with the second flow into the sintering flue gas conveyance conduit transporting cold wind:
In relational expression (2):
F2Indicate that the second flow, unit are cube m/h (m3/h)；
F0Indicate the flow of the former sintering flue gas, unit is cube m/h (m3/h)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
T4Indicate that the temperature for being set to sintering flue gas at the 4th temperature detecting point on sintering flue gas conveyance conduit, unit are to take the photograph Family name's degree (DEG C)；
Ta indicates that the temperature of the cold wind, unit are degree Celsius (DEG C)；
η2Indicate the heat exchange efficiency of the cold wind.
Wherein, F0Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, in sintering flue gas conveyance conduit Flow detection point at install first flowmeter (such as first flowmeter 12 shown in fig. 1), using the first flowmeter measure The flow of sintering flue gas at flow detection point reads the flow value detected in first flowmeter later, can be obtained former sintering The flow of flue gas, the value of the flow of former sintering flue gas are the flow value.
Default first normal temperature T0For a temperature in preset first temperature and preset second temperature range, that is, pre- If the first normal temperature T0Greater than the preset first temperature, and it is less than the preset second temperature.For example, can will preset First normal temperature T0It is set as 130 DEG C.
T4Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, the 4th of sintering flue gas conveyance conduit the The 4th temperature sensor (such as the 4th temperature sensor 18 shown in fig. 1) is installed in temperature detecting point, using the 4th temperature The temperature of sintering flue gas at the 4th temperature detecting point of sensor measurement reads the temperature detected in the 4th temperature sensor later Value, can be obtained the temperature of sintering flue gas at the 4th temperature detecting point, the value of the temperature of sintering flue gas at the 4th temperature detecting point For the temperature value.
The value of Ta can be obtained by following manner: with reference to the set-up mode of Fig. 1, the 5th is installed on cold wind conveyance conduit Temperature sensor (such as the 5th temperature sensor 22 shown in fig. 1), using the temperature of the 5th temperature sensor measurement cold wind, The temperature value detected in the 5th temperature sensor is read later, can be obtained the temperature of cold wind, the value of the temperature of cold wind is should Temperature value.
η2Value the value of the heat exchange efficiency of cold wind used in actual production can be deposited in advance according to practical condition It is stored in the control device (such as above-mentioned control device) for implementing the sintering flue gas temprature control method, the sintering is being embodied When flue gas temperature control method, directly read inside control device；It can also be obtained from system.
Further, under such mode, with the second flow into the sintering flue gas conveyance conduit transporting cold wind In the process, if detecting that the initial temperature is fallen to more than or equal to the preset first temperature, and it is less than described pre- If second temperature, then according to following default first time relational expressions, i.e., following relational expressions (3) calculate the first duration, are passing through institute The cold blast sliding valve is closed after stating the first duration, stops the transporting cold wind into the sintering flue gas conveyance conduit:
In relational expression (3):
m1Indicate that first duration, unit are hour (h)；
L indicates to be conveyed on sintering flue gas conveyance conduit by former gas baffle to the sintering flue gas between the 4th temperature detecting point The length of pipeline, unit are rice (m)；
D indicates the diameter of sintering flue gas conveyance conduit, and unit is rice (m)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
F2Indicate that the second flow, unit are cube m/h (m3/h)；
η2Indicate the heat exchange efficiency of the cold wind.
Wherein, L and D is constant, can be according to practical condition, by sintering flue gas delivery pipe used in actual production The analog value in road is pre-stored in the control device (such as above-mentioned control device) for implementing the sintering flue gas temprature control method, When the sintering flue gas temprature control method is embodied, directly read inside control device；It can also be by specific Measurement obtains.Parameter T1、T0、F2And η2Value acquisition modes can refer to previous embodiment content, and will not be described here in detail.
The second way sprays cold water in Xiang Suoshu sintering flue gas conveyance conduit, such as sprays into condensed water.When it is implemented, The process that cold water is sprayed into the sintering flue gas conveyance conduit, can realize in the following manner:
With reference to the set-up mode of Fig. 1, it is (such as shown in fig. 1 that cold water input unit is installed on sintering flue gas conveyance conduit Cold water input unit 9), the cold water conveyance conduit of cold water input unit connection cold water is provided to device, in Xiang Lengshui input unit Cold water is sprayed, i.e., cold water is sprayed into sintering flue gas conveyance conduit, and when spraying cold water into cold water input unit, according to following pre- If third discharge relation formula, i.e., following relational expressions (4) calculate third flow, by adjusting being set on cold water conveyance conduit The flow for spraying into cold water in cold water input unit is adjusted to institute by the 4th flowmeter (such as the 4th flowmeter 25 shown in fig. 1) Third flow is stated, cold water is sprayed into the cold water input unit with the third flow:
In relational expression (4):
F3Indicate the third flow, unit is cube m/h (m3/h)；
F0Indicate the flow of the former sintering flue gas, unit is cube m/h (m3/h)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
T4Indicate that the temperature for being set to sintering flue gas at the 4th temperature detecting point on sintering flue gas conveyance conduit, unit are to take the photograph Family name's degree (DEG C)；
Tw indicates that the temperature of the cold water, unit are degree Celsius (DEG C)；
η3Indicate the heat exchange efficiency of the cold water.
Wherein, F0Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, in sintering flue gas conveyance conduit Flow detection point at install first flowmeter (such as first flowmeter 12 shown in fig. 1), using the first flowmeter measure The flow of sintering flue gas at flow detection point reads the flow value detected in first flowmeter later, can be obtained former sintering The flow of flue gas, the value of the flow of former sintering flue gas are the flow value.
Default first normal temperature T0For a temperature in preset first temperature and preset second temperature range, that is, pre- If the first normal temperature T0Greater than the preset first temperature, and it is less than the preset second temperature.For example, can will preset First normal temperature T0It is set as 130 DEG C.
T4Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, the 4th of sintering flue gas conveyance conduit the The 4th temperature sensor (such as the 4th temperature sensor 18 shown in fig. 1) is installed in temperature detecting point, using the 4th temperature The temperature of sintering flue gas at the 4th temperature detecting point of sensor measurement reads the temperature detected in the 4th temperature sensor later Value, can be obtained the temperature of sintering flue gas at the 4th temperature detecting point, the value of the temperature of sintering flue gas at the 4th temperature detecting point For the temperature value.
The value of Tw can be detected by temperature sensor and be obtained, η3Value can be according to practical condition, by practical life The value of the heat exchange efficiency of cold water used in production is pre-stored within the control device (example for implementing the sintering flue gas temprature control method Such as above-mentioned control device) in, when the sintering flue gas temprature control method is embodied, directly reading is inside control device It can；It can also be obtained from system.
Further, under such mode, during spraying cold water into the cold water input unit with the third flow, If detecting that the initial temperature is fallen to more than or equal to the preset first temperature, and it is less than default second temperature Degree, then according to following default second time history forms, i.e., following relational expressions (5) calculate the second duration, when by described second Stop spraying cold water into the cold water input unit after length:
In relational expression (5):
m2Indicate that second duration, unit are hour (h)；
L indicates to be conveyed on sintering flue gas conveyance conduit by former gas baffle to the sintering flue gas between the 4th temperature detecting point The length of pipeline, unit are rice (m)；
D indicates the diameter of sintering flue gas conveyance conduit, and unit is rice (m)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
F3Indicate the third flow, unit is cube m/h (m3/h)；
η3Indicate the heat exchange efficiency of the cold water.
Wherein, L and D is constant, can be according to practical condition, by sintering flue gas delivery pipe used in actual production The analog value in road is pre-stored in the control device (such as above-mentioned control device) for implementing the sintering flue gas temprature control method, When the sintering flue gas temprature control method is embodied, directly read inside control device；It can also be by specific Measurement obtains.Parameter T1、T0、F3And η3Value acquisition modes can refer to previous embodiment content, and will not be described here in detail.
It, can be by institute if the initial temperature got in step 101 is greater than or equal to the default third temperature The mode of transporting cold wind and cold water in sintering flue gas conveyance conduit is stated, the temperature of the former sintering flue gas is reduced.And actually this Kind mode is only the first way of the temperature of the former sintering flue gas of reduction, in addition to this it is possible to have other two ways, three kinds Mode the specific implementation process is as follows:
First way, transporting cold wind and spray cold water, reduce former sintering flue gas in Xiang Suoshu sintering flue gas conveyance conduit Temperature.When it is implemented, transporting cold wind and the process for spraying cold water into the sintering flue gas conveyance conduit, it can be according to following sides Formula is realized:
With reference to the set-up mode of Fig. 1, cold wind conveyance conduit is installed on the cold wind input port of sintering flue gas conveyance conduit (such as cold wind conveyance conduit 19 shown in fig. 1), and cold water input unit is installed on sintering flue gas conveyance conduit and (such as is schemed Cold water input unit 9 shown in 1).
Cold wind conveyance conduit is provided to device with cold wind to be connected to, open the cold blast sliding valve on cold wind conveyance conduit to sintering flue gas Transporting cold wind in conveyance conduit, and in the transporting cold wind into sintering flue gas conveyance conduit, according to following default 4th flows Relational expression, i.e., following relational expressions (6) calculate the 4th flow, by adjusting the third flowmeter being set on cold wind conveyance conduit The flow for inputting cold wind in sintering flue gas conveyance conduit is adjusted to the described 4th by (such as third flowmeter 21 shown in fig. 1) Flow, with the 4th flow into the sintering flue gas conveyance conduit transporting cold wind:
In relational expression (6):
F4Indicate the 4th flow, unit is cube m/h (m3/h)；
F0Indicate the flow of the former sintering flue gas, unit is cube m/h (m3/h)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
T0' indicate that default second normal temperature, unit are degree Celsius (DEG C)；
Ta indicates that the temperature of the cold wind, unit are degree Celsius (DEG C)；
η2Indicate the heat exchange efficiency of the cold wind.
Wherein, F0Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, in sintering flue gas conveyance conduit Flow detection point at install first flowmeter (such as first flowmeter 12 shown in fig. 1), using the first flowmeter measure The flow of sintering flue gas at flow detection point reads the flow value detected in first flowmeter later, can be obtained former sintering The flow of flue gas, the value of the flow of former sintering flue gas are the flow value.
In the first way, mostly in reference to sintering flue gas at third temperature detecting point on sintering flue gas conveyance conduit Temperature, first by way of the transporting cold wind into sintering flue gas conveyance conduit, by sintering flue gas at third temperature detecting point Temperature is adjusted to suitable temperature, which is default 4th temperature~default third temperature temperature range. Default second normal temperature T0' for default 4th temperature~preset a temperature in the temperature range of third temperature, that is, default Second normal temperature T0' it is greater than default 4th temperature, and it is less than the default third temperature.Default 4th temperature is greater than Preset second temperature is less than default third temperature.The value of default 4th temperature and default second normal temperature also can basis Practical production experience is set, such as default 4th temperature can be set as 150 DEG C, by default second normal temperature T0′ It is set as 160 DEG C.
The value of Ta can be obtained by following manner: with reference to the set-up mode of Fig. 1, the 5th is installed on cold wind conveyance conduit Temperature sensor (such as the 5th temperature sensor 22 shown in fig. 1), using the temperature of the 5th temperature sensor measurement cold wind, The temperature value detected in the 5th temperature sensor is read later, can be obtained the temperature of cold wind, the value of the temperature of cold wind is should Temperature value.
η2Value the value of the heat exchange efficiency of cold wind used in actual production can be deposited in advance according to practical condition It is stored in the control device (such as above-mentioned control device) for implementing the sintering flue gas temprature control method, the sintering is being embodied When flue gas temperature control method, directly read inside control device；It can also be obtained from system.
Into sintering flue gas conveyance conduit after transporting cold wind, detects and be set to third temperature on sintering flue gas conveyance conduit The temperature of sintering flue gas is greater than default 4th temperature at test point, and when being less than the default third temperature, by cold water The cold water conveyance conduit connection cold water of input unit provides device, sprays cold water in Xiang Lengshui input unit, i.e., defeated to sintering flue gas Send and spray cold water in pipeline, and into cold water input unit spray cold water when, according to the default third discharge relation formula, i.e., on It states relational expression (4), calculates third flow, (such as Fig. 1 is shown by adjusting the 4th flowmeter being set on cold water conveyance conduit The 4th flowmeter 25), the flow of cold water in cold water input unit will be sprayed into and be adjusted to the third flow, with the third stream It measures and sprays cold water into the cold water input unit.Wherein, the acquisition modes for presetting the value of each parameter in third discharge relation formula can With the content with reference to above-described embodiment, and will not be described here in detail.
Further, under such mode, during the transporting cold wind into sintering flue gas conveyance conduit and spray cold water, if It detects that the initial temperature is fallen to more than or equal to the preset first temperature, and is less than the preset second temperature, Then close cold blast sliding valve, stop the transporting cold wind into sintering flue gas conveyance conduit, and according to default second time history form, i.e., on It states relational expression (5), calculates the second duration and stop spraying cold water into sintering flue gas conveyance conduit after the second duration.Wherein, The acquisition modes of the value of each parameter can refer to the content of above-described embodiment in default second time history form, herein no longer in detail It states.
The second way, only into the sintering flue gas conveyance conduit, transporting cold wind reduces the temperature of former sintering flue gas. When it is implemented, into the sintering flue gas conveyance conduit transporting cold wind process, can realize in the following manner:
With reference to the set-up mode of Fig. 1, cold wind conveyance conduit is installed on the cold wind input port of sintering flue gas conveyance conduit (such as cold wind conveyance conduit 19 shown in fig. 1), provides cold wind conveyance conduit to device with cold wind and is connected to, and opens cold wind delivery pipe Cold blast sliding valve on the road transporting cold wind into sintering flue gas conveyance conduit, and in the transporting cold wind into sintering flue gas conveyance conduit When, according to following default 5th discharge relation formulas, i.e., following relational expressions (7) calculate the 5th flow, by adjusting cold wind is set to Third flowmeter (such as third flowmeter 21 shown in fig. 1) on conveyance conduit, will be cold in input sintering flue gas conveyance conduit The flow of wind is adjusted to the 5th flow, with the 5th flow into the sintering flue gas conveyance conduit transporting cold wind:
In relational expression (7):
F5Indicate the 5th flow, unit is cube m/h (m3/h)；
F0Indicate the flow of the former sintering flue gas, unit is cube m/h (m3/h)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
Ta indicates that the temperature of the cold wind, unit are degree Celsius (DEG C)；
η2Indicate the heat exchange efficiency of the cold wind.
Wherein, F0Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, in sintering flue gas conveyance conduit Flow detection point at install first flowmeter (such as first flowmeter 12 shown in fig. 1), using the first flowmeter measure The flow of sintering flue gas at flow detection point reads the flow value detected in first flowmeter later, can be obtained former sintering The flow of flue gas, the value of the flow of former sintering flue gas are the flow value.
Default first normal temperature T0For a temperature in preset first temperature and preset second temperature range, that is, pre- If the first normal temperature T0Greater than the preset first temperature, and it is less than the preset second temperature.For example, can will preset First normal temperature T0It is set as 130 DEG C.
The value of Ta can be obtained by following manner: with reference to the set-up mode of Fig. 1, the 5th is installed on cold wind conveyance conduit Temperature sensor (such as the 5th temperature sensor 22 shown in fig. 1), using the temperature of the 5th temperature sensor measurement cold wind, The temperature value detected in the 5th temperature sensor is read later, can be obtained the temperature of cold wind, the value of the temperature of cold wind is should Temperature value.
η2Value the value of the heat exchange efficiency of cold wind used in actual production can be deposited in advance according to practical condition It is stored in the control device (such as above-mentioned control device) for implementing the sintering flue gas temprature control method, the sintering is being embodied When flue gas temperature control method, directly read inside control device；It can also be obtained from system.
Further, under such mode, with the 5th flow into the sintering flue gas conveyance conduit transporting cold wind In the process, if detecting that the initial temperature is fallen to more than or equal to the preset first temperature, and it is less than described pre- If second temperature, then according to following default third time history forms, i.e., following relational expressions (8) calculate third duration, by the The cold blast sliding valve is closed after three durations, stops the transporting cold wind into the sintering flue gas conveyance conduit:
In relational expression (8):
m3Indicate that the third duration, unit are hour (h)；
L indicates to be conveyed on sintering flue gas conveyance conduit by former gas baffle to the sintering flue gas between the 4th temperature detecting point The length of pipeline, unit are rice (m)；
D indicates the diameter of sintering flue gas conveyance conduit, and unit is rice (m)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
F5Indicate the 5th flow, unit is cube m/h (m3/h)；
η2Indicate the heat exchange efficiency of the cold wind.
Wherein, L and D is constant, can be according to practical condition, by sintering flue gas delivery pipe used in actual production The analog value in road is pre-stored in the control device (such as above-mentioned control device) for implementing the sintering flue gas temprature control method, When the sintering flue gas temprature control method is embodied, directly read inside control device；It can also be by specific Measurement obtains.Parameter T1、T0、F5And η2Value acquisition modes can refer to previous embodiment content, and will not be described here in detail.
The third mode sprays cold water into the sintering flue gas conveyance conduit only to reduce the temperature of former sintering flue gas.Tool When body is implemented, the process of cold water is sprayed in Xiang Suoshu sintering flue gas conveyance conduit, can be realized in the following manner:
With reference to the set-up mode of Fig. 1, it is (such as shown in fig. 1 that cold water input unit is installed on sintering flue gas conveyance conduit Cold water input unit 9), the cold water conveyance conduit of cold water input unit connection cold water is provided to device, in Xiang Lengshui input unit Cold water is sprayed, i.e., cold water is sprayed into sintering flue gas conveyance conduit, and when spraying cold water into cold water input unit, according to following pre- If the 6th discharge relation formula, i.e., following relational expressions (9) calculate the 6th flow, by adjusting being set on cold water conveyance conduit The flow for spraying into cold water in cold water input unit is adjusted to institute by the 4th flowmeter (such as the 4th flowmeter 25 shown in fig. 1) The 6th flow is stated, cold water is sprayed into the cold water input unit with the 6th flow:
In relational expression (9):
F6Indicate the 6th flow, unit is cube m/h (m3/h)；
F0Indicate the flow of the former sintering flue gas, unit is cube m/h (m3/h)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
Tw indicates that the temperature of the cold water, unit are degree Celsius (DEG C)；
η3Indicate the heat exchange efficiency of the cold water.
Wherein, F0Value can be obtained by following manner: with reference to the set-up mode of Fig. 1, in sintering flue gas conveyance conduit Flow detection point at install first flowmeter (such as first flowmeter 12 shown in fig. 1), using the first flowmeter measure The flow of sintering flue gas at flow detection point reads the flow value detected in first flowmeter later, can be obtained former sintering The flow of flue gas, the value of the flow of former sintering flue gas are the flow value.
Default first normal temperature T0For a temperature in preset first temperature and preset second temperature range, that is, pre- If the first normal temperature T0Greater than the preset first temperature, and it is less than the preset second temperature.For example, can will preset First normal temperature T0It is set as 130 DEG C.
The value of Tw can be detected by temperature sensor and be obtained, η3Value can be according to practical condition, by practical life The value of the heat exchange efficiency of cold water used in production is pre-stored within the control device (example for implementing the sintering flue gas temprature control method Such as above-mentioned control device) in, when the sintering flue gas temprature control method is embodied, directly reading is inside control device It can；It can also be obtained from system.
Further, under such mode, during spraying cold water into the cold water input unit with the 6th flow, If detecting that the initial temperature is fallen to more than or equal to the preset first temperature, and it is less than default second temperature Degree, then according to following default 4th time history forms, i.e., following relational expressions (10) calculate the 4th duration, are passing through the described 4th Stop spraying cold water into the cold water input unit after duration:
In relational expression (10):
m4Indicate that the 4th duration, unit are hour (h)；
L indicates to be conveyed on sintering flue gas conveyance conduit by former gas baffle to the sintering flue gas between the 4th temperature detecting point The length of pipeline, unit are rice (m)；
D indicates the diameter of sintering flue gas conveyance conduit, and unit is rice (m)；
T1Indicate that the initial temperature, unit are degree Celsius (DEG C)；
T0Indicate that default first normal temperature, unit are degree Celsius (DEG C)；
F6Indicate the 6th flow, unit is cube m/h (m3/h)；
η3Indicate the heat exchange efficiency of the cold water.
Wherein, L and D is constant, can be according to practical condition, by sintering flue gas delivery pipe used in actual production The analog value in road is pre-stored in the control device (such as above-mentioned control device) for implementing the sintering flue gas temprature control method, When the sintering flue gas temprature control method is embodied, directly read inside control device；It can also be by specific Measurement obtains.Parameter T1、T0、F6And η3Value acquisition modes can refer to previous embodiment content, and will not be described here in detail.
Further, when sintering smoke purifying system is because of disorderly closedown or when sintering smoke purifying system is shut down, in order not to increase Add the humidity in adsorption tower, the sintering flue gas temprature control method further include: closing is set on sintering flue gas conveyance conduit Former gas baffle, the cold water inlet pipe road and cold water for disconnecting cold water input unit provide the connection of device, open cold wind delivery pipe Cold blast sliding valve on road, the transporting cold wind into sintering flue gas conveyance conduit, until the 4th temperature detection on sintering flue gas conveyance conduit After the temperature of sintering flue gas reaches preset temperature threshold at point, cold blast sliding valve is closed.In this way, no matter sintering smoke purifying system occurs Failure is stopped transport or normal stoppage in transit, and the humidity in adsorption tower will not be too high, leads so as to avoid since humidity is too high in adsorption tower The problem of active tower adsorbs too many vapor, active carbon activity is caused to reduce and agglomerate in adsorption tower is caused, also avoids agglomerating Active carbon influence adsorption tower roll feeder normal work the problem of.Preset temperature threshold can be according to actual production feelings Condition is set.For example, preset temperature threshold can be set to some temperature value in 50 DEG C~60 DEG C temperature ranges.
It, should when the initial temperature is more than or equal to preset second temperature in some other optional embodiment Sintering flue gas temprature control method further include: conveying dilution ammonia in Xiang Suoshu sintering flue gas conveyance conduit.When it is implemented, to Conveying dilution ammonia can be realized in the following manner in the sintering flue gas conveyance conduit:
With reference to the set-up mode of Fig. 1, ammonia conveyance conduit is installed on the ammonia input port of sintering flue gas conveyance conduit (such as ammonia conveyance conduit 26 shown in fig. 1), the dilution ammonia generated after ammonia is mixed with air pass through ammonia delivery pipe Road is delivered in sintering flue gas conveyance conduit, further cooling processing is carried out to sintering flue gas by dilution ammonia, so that burning The temperature of knot flue gas further decreases 1~5 DEG C.
In sintering flue gas temprature control method provided in an embodiment of the present invention for sintering smoke purifying system, by obtaining The initial temperature for taking former sintering flue gas adjusts rule according to preset temperature, divides situation to original according to the different values of initial temperature The temperature of sintering flue gas is adjusted, in this way, in the case of different for the temperature of each former sintering flue gas, and former sintering flue gas The lower situation of temperature can adjust rule according to preset temperature, be adjusted to the temperature of former sintering flue gas, so that into The temperature of sintering flue gas in adsorption tower is in always within the scope of suitable temperature.It follows that the sintering flue gas temperature controls Method, no longer single to the temperature adjustment of former sintering flue gas, temperature adjustment result is more accurate, and applicability is more preferable.
Corresponding with the above-mentioned sintering flue gas temprature control method for sintering smoke purifying system, the embodiment of the present invention is also Disclose a kind of sintering flue gas temperature control equipment for sintering smoke purifying system.
The sintering flue gas temperature provided in an embodiment of the present invention for sintering smoke purifying system is shown referring to Fig. 3, Fig. 3 Spend the structural block diagram of control device.In conjunction with Fig. 3 it is found that the sintering flue gas temperature control equipment includes: that initial temperature obtains module 301, for obtaining the initial temperature of former sintering flue gas；Temperature adjusts module 302, is used for according to the initial temperature and presets Temperature adjustment rule carries out temperature adjustment to the former sintering flue gas, so that the temperature into the sintering flue gas in adsorption tower is big In or be equal to preset first temperature, and be less than preset second temperature.
Further, the temperature adjustment module 302 includes: the first temperature adjustment unit 3021, if for described initial Temperature is less than preset first temperature, then hot steam is conveyed into sintering flue gas conveyance conduit, improves the temperature of the former sintering flue gas Degree；Second temperature adjustment unit 3022, if being greater than or equal to the preset first temperature for the initial temperature, and small In preset second temperature, then the temperature-resistant of the former sintering flue gas is kept；Third temperature adjustment unit 3023, if being used for institute Initial temperature is stated more than or equal to the preset second temperature, and is less than default third temperature, then it is defeated to the sintering flue gas Transporting cold wind or spray cold water in pipeline are sent, the temperature of the former sintering flue gas is reduced；4th temperature adjustment unit 3024, for such as Initial temperature described in fruit be greater than or equal to the default third temperature, then into the sintering flue gas conveyance conduit transporting cold wind and Cold water is sprayed, the temperature of the former sintering flue gas is reduced.
Further, the first temperature adjustment unit 3021 has for conveying hot steam into sintering flue gas conveyance conduit Body includes: that the first temperature adjustment unit 3021 is used to calculate first flow according to following default first flow relational expressions, with The first flow conveys hot steam into sintering flue gas conveyance conduit；Wherein, F1Indicate described first Flow, F0Indicate the flow of the former sintering flue gas, T0Indicate that default first normal temperature, default first normal temperature are big In the preset first temperature, and it is less than the preset second temperature, T1Indicate the initial temperature, Tg indicates that the heat is steamed The temperature of vapour, η1Indicate the heat exchange efficiency of the hot steam.
Further, the third temperature adjustment unit 3023 be used for into the sintering flue gas conveyance conduit transporting cold wind or Spray cold water, specifically include: the third temperature adjustment unit 3023 is used to calculate the according to following default second flow relational expressions Two flows, with the second flow into the sintering flue gas conveyance conduit transporting cold wind,Wherein, F2 Indicate the second flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, described default the One normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Expression is set to sintering flue gas On conveyance conduit at the 4th temperature detecting point sintering flue gas temperature, Ta indicates the temperature of the cold wind, η2Indicate the cold wind Heat exchange efficiency；Or, calculate third flows according to following default third discharge relation formulas, with the third flow to the sintering Cold water is sprayed in smoke conveying duct,Wherein, F3Indicate the third flow, F0Indicate the former sintering The flow of flue gas, T0Indicate that default first normal temperature, default first normal temperature are greater than the preset first temperature, and And it is less than the preset second temperature, T4Expression is set on sintering flue gas conveyance conduit sintering flue gas at the 4th temperature detecting point Temperature, Tw indicates the temperature of the cold water, η3Indicate the heat exchange efficiency of the cold water.
Further, the 4th temperature adjustment unit 3024 be used for into the sintering flue gas conveyance conduit transporting cold wind and Spray cold water, specifically include: the 4th temperature adjustment unit 3024 is used to calculate the according to following default 4th discharge relation formulas Four flows, with the 4th flow into the sintering flue gas conveyance conduit transporting cold wind,Wherein, F4 Indicate the 4th flow, F0Indicate the flow of the former sintering flue gas, T0' indicate default second normal temperature, described default the Two normal temperatures are greater than default 4th temperature, and are less than the default third temperature, T1Indicate the initial temperature, Ta is indicated The temperature of the cold wind, η2Indicate the heat exchange efficiency of the cold wind；It detects and is set to third temperature on sintering flue gas conveyance conduit When spending the temperature of sintering flue gas at test point greater than default 4th temperature, and being less than the default third temperature, according to Following default third discharge relation formulas calculate third flow, are sprayed with the third flow into the sintering flue gas conveyance conduit cold Water,Wherein, F3Indicate the third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate pre- If the first normal temperature, default first normal temperature is greater than the preset first temperature, and is less than described default second Temperature, T4Indicate to be set to the temperature of sintering flue gas at the 4th temperature detecting point on sintering flue gas conveyance conduit, described in Tw expression The temperature of cold water, η3Indicate the heat exchange efficiency of the cold water.
Use the sintering flue gas temperature control equipment provided in an embodiment of the present invention for sintering smoke purifying system can be with Implement each step in the above-mentioned sintering flue gas temprature control method for sintering smoke purifying system, and obtains identical skill Art effect.In the case of different for the temperature of each former sintering flue gas, and the lower situation of temperature of former sintering flue gas, it uses The sintering flue gas temperature control equipment can be adjusted the temperature of former sintering flue gas, so that the former sintering cigarette of any temperature Gas can achieve a suitable temperature when entering in adsorption tower, more smart to the temperature adjustment result of former sintering flue gas Really, applicability is more preferable.
The embodiment of the invention also provides a kind of sintering smoke purifying systems.The sintering smoke purifying system includes above-mentioned use In the sintering flue gas temperature control equipment, sintering flue gas conveyance conduit and adsorption tower of sintering smoke purifying system；Sintering flue gas is defeated Send pipeline for being connected to the sintering flue gas discharge end of adsorption tower and sintering process；On sintering flue gas conveyance conduit, from sintering cigarette One end that letter shoot road is connected with the sintering flue gas discharge end of sintering process is disposed with to the one end being connected with adsorption tower Former gas baffle, flow detection point, the first temperature detecting point, steam heater, second temperature test point, cold wind input port, Third temperature detecting point, booster fan, cold water input unit, the 4th temperature detecting point and ammonia input port.The sintering cigarette The content that can refer to previous embodiment is connected each other between the function of each component and each component in gas purification system, herein No longer it is described in detail.
It can be implemented using sintering smoke purifying system provided in an embodiment of the present invention above-mentioned for sintering gas purifying system Each step in the sintering flue gas temprature control method of system, and obtain identical technical effect.
In the specific implementation, the present invention also provides a kind of computer storage mediums, wherein the computer storage medium can store There is program, which may include the sintering flue gas temperature controlling party provided by the present invention for sintering smoke purifying system when executing Step some or all of in each embodiment of method.The storage medium can be magnetic disk, CD, read-only memory (English Text: read-only memory, referred to as: ROM) or random access memory (English: random access memory, referred to as: RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present invention substantially or Say that the part that contributes to existing technology can be embodied in the form of software products, which can deposit Storage is in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that computer equipment (can be with It is personal computer, server or the network equipment etc.) execute certain part institutes of each embodiment of the present invention or embodiment The method stated.
Same and similar part may refer to each other between each embodiment in this specification.Especially for for being sintered For the sintering flue gas temperature control equipment and sintering smoke purifying system embodiment of flue gas purification system, since it is substantially similar In embodiment of the method, so being described relatively simple, related place is referring to the explanation in embodiment of the method.
Invention described above embodiment is not intended to limit the scope of the present invention..

Claims (10)

1. a kind of sintering flue gas temprature control method for sintering smoke purifying system characterized by comprising
Obtain the initial temperature of former sintering flue gas；
According to the initial temperature and preset temperature adjustment rule, temperature adjustment is carried out to the former sintering flue gas, so that into The temperature for entering the sintering flue gas in adsorption tower is greater than or equal to preset first temperature, and is less than preset second temperature.
2. sintering flue gas temprature control method as described in claim 1, which is characterized in that according to the initial temperature and in advance If temperature adjustment rule carries out the process of temperature adjustment to the former sintering flue gas, specifically includes:
If the initial temperature is less than preset first temperature, hot steam is conveyed into sintering flue gas conveyance conduit, improves institute State the temperature of former sintering flue gas；Or,
If the initial temperature is greater than or equal to the preset first temperature, and is less than preset second temperature, then institute is kept State the temperature-resistant of former sintering flue gas；Or,
If the initial temperature is greater than or equal to the preset second temperature, and is less than default third temperature, then Xiang Suoshu Transporting cold wind or spray cold water in sintering flue gas conveyance conduit, reduce the temperature of the former sintering flue gas；Or,
If the initial temperature is greater than or equal to the default third temperature, conveyed into the sintering flue gas conveyance conduit Cold wind and spray cold water reduce the temperature of the former sintering flue gas.
3. sintering flue gas temprature control method as claimed in claim 2, which is characterized in that defeated into sintering flue gas conveyance conduit The process for sending hot steam, specifically includes:
First flow is calculated according to following default first flow relational expressions, with the first flow into sintering flue gas conveyance conduit Convey hot steam；
Wherein, F1Indicate the first flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T1Described in expression Initial temperature, Tg indicate the temperature of the hot steam, η1Indicate the heat exchange efficiency of the hot steam.
4. sintering flue gas temprature control method as claimed in claim 2, which is characterized in that Xiang Suoshu sintering flue gas conveyance conduit Middle transporting cold wind or the process for spraying cold water, specifically include:
Second flows are calculated according to following default second flow relational expressions, with the second flow to the sintering flue gas delivery pipe Transporting cold wind in road,
Wherein, F2Indicate the second flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Indicate setting In on sintering flue gas conveyance conduit at the 4th temperature detecting point sintering flue gas temperature, Ta indicates the temperature of the cold wind, η2Table Show the heat exchange efficiency of the cold wind；Or,
Third flows are calculated according to following default third discharge relation formulas, with the third flow to the sintering flue gas delivery pipe Cold water is sprayed in road,
Wherein, F3Indicate the third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Indicate setting In on sintering flue gas conveyance conduit at the 4th temperature detecting point sintering flue gas temperature, Tw indicates the temperature of the cold water, η3Table Show the heat exchange efficiency of the cold water.
5. sintering flue gas temprature control method as claimed in claim 2, which is characterized in that Xiang Suoshu sintering flue gas conveyance conduit The process of middle transporting cold wind and spray cold water, specifically includes:
The 4th flow is calculated according to following default 4th discharge relation formulas, with the 4th flow to the sintering flue gas delivery pipe Transporting cold wind in road,
Wherein, F4Indicate the 4th flow, F0Indicate the flow of the former sintering flue gas, T0' indicate default second standard temperature Degree, default second normal temperature is greater than default 4th temperature, and is less than the default third temperature, T1Indicate described first Beginning temperature, Ta indicate the temperature of the cold wind, η2Indicate the heat exchange efficiency of the cold wind；
It is described default to detect that the temperature for being set to sintering flue gas at third temperature detecting point on sintering flue gas conveyance conduit is greater than 4th temperature, and when being less than the default third temperature, third flows are calculated according to following default third discharge relation formulas, with The third flow sprays cold water into the sintering flue gas conveyance conduit,
Wherein, F3Indicate the third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Indicate setting In on sintering flue gas conveyance conduit at the 4th temperature detecting point sintering flue gas temperature, Tw indicates the temperature of the cold water, η3Table Show the heat exchange efficiency of the cold water.
6. a kind of sintering flue gas temperature control equipment for sintering smoke purifying system characterized by comprising
Initial temperature obtains module, for obtaining the initial temperature of former sintering flue gas；
Temperature adjusts module, for adjusting rule according to the initial temperature and preset temperature, to the former sintering flue gas into Trip temperature adjustment so that the temperature into the sintering flue gas in adsorption tower is greater than or equal to preset first temperature, and is less than pre- If second temperature.
7. sintering flue gas temperature control equipment as claimed in claim 6, which is characterized in that the temperature adjusts module and includes:
First temperature adjustment unit, if being less than preset first temperature for the initial temperature, to sintering flue gas delivery pipe Hot steam is conveyed in road, improves the temperature of the former sintering flue gas；
Second temperature adjustment unit if being greater than or equal to the preset first temperature for the initial temperature, and is less than Preset second temperature then keeps the temperature-resistant of the former sintering flue gas；
Third temperature adjustment unit if being greater than or equal to the preset second temperature for the initial temperature, and is less than Default third temperature, then transporting cold wind or spray cold water into the sintering flue gas conveyance conduit, reduce the former sintering flue gas Temperature；
4th temperature adjustment unit, if being greater than or equal to the default third temperature, Xiang Suoshu for the initial temperature Transporting cold wind and spray cold water in sintering flue gas conveyance conduit, reduce the temperature of the former sintering flue gas.
8. sintering flue gas temperature control equipment as claimed in claim 7, which is characterized in that the first temperature adjustment unit is used In conveying hot steam into sintering flue gas conveyance conduit, specifically include:
The first temperature adjustment unit is used to calculate first flow according to following default first flow relational expressions, with described first Flow conveys hot steam into sintering flue gas conveyance conduit；
Wherein, F1Indicate the first flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T1Described in expression Initial temperature, Tg indicate the temperature of the hot steam, η1Indicate the heat exchange efficiency of the hot steam.
9. sintering flue gas temperature control equipment as claimed in claim 7, which is characterized in that the third temperature adjustment unit is used In the transporting cold wind into the sintering flue gas conveyance conduit or spray cold water, specifically include:
The third temperature adjustment unit is used to calculate second flow according to following default second flow relational expressions, with described second Flow transporting cold wind into the sintering flue gas conveyance conduit,
Wherein, F2Indicate the second flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Indicate setting In on sintering flue gas conveyance conduit at the 4th temperature detecting point sintering flue gas temperature, Ta indicates the temperature of the cold wind, η2Table Show the heat exchange efficiency of the cold wind；Or,
Third flows are calculated according to following default third discharge relation formulas, with the third flow to the sintering flue gas delivery pipe Cold water is sprayed in road,
Wherein, F3Indicate the third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Indicate setting In on sintering flue gas conveyance conduit at the 4th temperature detecting point sintering flue gas temperature, Tw indicates the temperature of the cold water, η3Table Show the heat exchange efficiency of the cold water.
10. sintering flue gas temperature control equipment as claimed in claim 7, which is characterized in that the 4th temperature adjustment unit For the transporting cold wind into the sintering flue gas conveyance conduit and spray cold water, specifically include:
The 4th temperature adjustment unit is used to calculate the 4th flow according to following default 4th discharge relation formulas, with the described 4th Flow transporting cold wind into the sintering flue gas conveyance conduit,
Wherein, F4Indicate the 4th flow, F0Indicate the flow of the former sintering flue gas, T0' indicate default second standard temperature Degree, default second normal temperature is greater than default 4th temperature, and is less than the default third temperature, T1Indicate described first Beginning temperature, Ta indicate the temperature of the cold wind, η2Indicate the heat exchange efficiency of the cold wind；
It is described default to detect that the temperature for being set to sintering flue gas at third temperature detecting point on sintering flue gas conveyance conduit is greater than 4th temperature, and when being less than the default third temperature, third flows are calculated according to following default third discharge relation formulas, with The third flow sprays cold water into the sintering flue gas conveyance conduit,
Wherein, F3Indicate the third flow, F0Indicate the flow of the former sintering flue gas, T0Indicate default first normal temperature, Default first normal temperature is greater than the preset first temperature, and is less than the preset second temperature, T4Indicate setting In on sintering flue gas conveyance conduit at the 4th temperature detecting point sintering flue gas temperature, Tw indicates the temperature of the cold water, η3Table Show the heat exchange efficiency of the cold water.
CN201710940019.8A 2017-10-11 2017-10-11 Sintering flue gas temprature control method and device for sintering smoke purifying system Pending CN109647123A (en)

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