CN103032360A - Method and device for controlling desulfuration system - Google Patents
Method and device for controlling desulfuration system Download PDFInfo
- Publication number
- CN103032360A CN103032360A CN2012105794535A CN201210579453A CN103032360A CN 103032360 A CN103032360 A CN 103032360A CN 2012105794535 A CN2012105794535 A CN 2012105794535A CN 201210579453 A CN201210579453 A CN 201210579453A CN 103032360 A CN103032360 A CN 103032360A
- Authority
- CN
- China
- Prior art keywords
- outlet port
- air quantity
- sulfur
- smoke gas
- containing smoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides a method and device for controlling a desulfuration system. The method is characterized by comprising the following steps of obtaining the air quantity and the pressure at an outlet position of a main draught fan, wherein the pressure at the outlet position is negative pressure; calculating the air quantity at an outlet position of a booster fan in the desulfuration system by utilizing the air quantity and the pressure at the outlet position of the main draught fan, and converting the air quantity at the outlet position of the booster fan into a rotating speed of the booster fan; and calculating the input frequency of a frequency converter by utilizing the rotating speed of the booster fan, transmitting the input frequency to the frequency converter, and thus enabling the frequency converter to control the rotating speed of the booster fan according to the input frequency. According to the method and device disclosed by the embodiment of the invention, the processing capacity of each device of the desulfuration system is controlled in real time through obtaining an actual production situation of a sintering process, and the purpose of saving the energy source and the materials is realized.
Description
Technical field
The present invention relates to the control technique field, particularly relate to a kind of controlling method and device of desulphurization system.
Background technique
Before blast furnace ironmaking is produced, need first the powdery iron-containing raw material to be carried out sintering.Referring to Fig. 1, show the schematic flow sheet of sintering process, at first, in proportioning room 11, the materials such as iron-bearing material, fuel, flux are prepared burden by certain proportioning; Secondly, in mixing machine 12, ferrous material mixed, adds water, pelletizing; Then, enter sintering machine 13 ignition and become the sintering deposit cake; At last, the sintering deposit cake is carried out entering central cooler 14 coolings after the breaking process, after the screening qualified sintering deposit is delivered to finished product ore storage bin or blast furnace.
Can produce a large amount of sulfur-containing smoke gas in the sintering process, account for greatly 58% of whole iron and steel unit operation ton product discharge amount, if directly this part sulfur-containing smoke gas is discharged in the air, to cause great pollution to environment, therefore, also comprise this link processed in the desulfurization of sulfur-containing smoke gas to only have the flue gas of processing through desulfurization just to be discharged in the air in the sintering process.
As shown in Figure 2, existing desulfurization processing mode is, the exhaust gas and smoke that sintering reaction produces is become owner of electric cleaner 21 by the large flue advanced person, by entering again main exhauster 22 after the main electric cleaner purified treatment, and then enter desulfurizing tower 24 (can realize that equally the desulfurization destination device also can be scrubber tower, washing machine etc.), the sulfur-containing oxide (SO in the flue gas via booster fan 23
2And SO
3) in desulfurizing tower, be absorbed agent and digest and assimilate, and after reaching environmental emission standard, be discharged in the atmosphere by chimney 26.Desulfurizing tower absorbs the desulfurization product that the sulfur-containing oxide in the flue gas generates, and can extract reprocessing out by recycle pump 25, can inject the new agent of digesting and assimilating in desulfurizing tower by recycle pump in addition.
In original flue gas desulphurization system, what booster fan adopted is the constant speed blower fan, and namely the booster fan capacity is selected according to the design treating capacity.So-called design treating capacity, refer to the most conservative designing and arranging high-volume, under the maximum sulfide content, maximum design parameters such as air mass flow, the workload of flue gas desulphurization system (can comprise the workload of booster fan, the workload of recycle pump, the workload of desulfurizing tower spray-absorption agent etc.).The design treating capacity is in order to guarantee that flue gas desulphurization system can reliable effectively operation under worst condition.But, need to prove, different sintering processes, the sulfur-containing smoke gas amount that produces also can be different, if flue gas desulphurization system is always according to the work of design treating capacity, and the sulfur-containing smoke gas amount of the actual generation of sintering process does not reach this design treating capacity far away, will make booster fan be in a kind of working state of low-load, and this will inevitably cause the waste of mass energy (for example electric energy, heat energy) and material (for example digestive pharmaceutical, water).
Summary of the invention
The embodiment of the invention provides a kind of controlling method and device of desulphurization system, by air quantity and the pressure of automatic acquisition main exhauster, and adjusts in real time accordingly the rotating speed of booster fan, realizes saving the purpose of the energy and material.
For this reason, the embodiment of the invention provides following technological scheme:
A kind of controlling method of desulphurization system, described method comprises:
Obtain air quantity and the pressure in main exhauster outlet port, the pressure in described outlet port is negative pressure;
Utilize the air quantity in described outlet port and the air quantity in the booster fan outlet port in the described desulphurization system of calculation of pressure, and the air quantity in described outlet port is converted to the rotating speed of described booster fan;
Utilize the incoming frequency of the rotating speed calculating frequency variator of described booster fan, and described incoming frequency is sent to described frequency variator, so that described frequency variator is controlled the rotating speed of described booster fan according to described incoming frequency.
Optimize, described air quantity and the pressure that obtains the main exhauster outlet port specifically comprises:
By being arranged on the air quantity detector in described main exhauster outlet port, obtain the air quantity in described outlet port;
By being arranged on the pressure transducer in described main exhauster outlet port, obtain the pressure in described outlet port.
Optimize, the mode of calculating the air quantity in described booster fan outlet port is:
Q
2＝(P
0+P)*Q
1/P
0
Wherein, Q
1The air quantity in expression main exhauster outlet port;
Q
2The air quantity in expression booster fan outlet port;
P represents the pressure in main exhauster outlet port;
P
0The expression standard atmospheric pressure.
To optimize, the pressure in described main exhauster outlet port is-200Pa～-500Pa.
Optimize, the controlling method of described desulphurization system also comprises:
Obtain current sintered material amount, and utilize the design sintered material amount of described current sintered material amount and described desulphurization system, design sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas amount;
Utilize air quantity and the described current sulfur-containing smoke gas amount in described main exhauster outlet port to calculate current sulfur-containing smoke gas percentage;
Calculate the ratio of the design sulfur-containing smoke gas percentage of described current sulfur-containing smoke gas percentage and described desulphurization system;
Adjust the frequency converter frequency of the recycle pump of described desulphurization system according to described ratio, perhaps adjust the pharmaceutical quantities of the desulfurizing tower spray of described desulphurization system according to described ratio.
Optimize, the mode of calculating described current sulfur-containing smoke gas amount is:
Q
Sulphur 1=Q
Sulphur 0* M
1/ M
0
Wherein, Q
Sulphur 1Represent current sulfur-containing smoke gas amount;
Q
Sulphur 0Expression design sulfur-containing smoke gas amount;
M
1Represent current sintered material amount;
M
0Expression design sintered material amount.
Optimize, calculate described current sulfur-containing smoke gas percentage η
Sulphur 1Mode be:
η
Sulphur 1=Q
Sulphur 1/ Q
1
A kind of control gear of desulphurization system, described device comprises:
The main exhauster parameter acquiring unit is used for obtaining air quantity and the pressure in main exhauster outlet port, and the pressure in described outlet port is negative pressure;
The Wind Coverage Calculation unit is used for utilizing the air quantity in the booster fan outlet port of the air quantity in described outlet port and the described desulphurization system of calculation of pressure, and the air quantity in described outlet port is converted to the rotating speed of described booster fan;
The frequency computation part unit is used for utilizing the rotating speed of described booster fan to calculate the incoming frequency of frequency variator, and described incoming frequency is sent to described frequency variator, so that described frequency variator is controlled the rotating speed of described booster fan according to described incoming frequency.
Optimize, described main exhauster parameter acquiring unit specifically comprises:
Be arranged on the air quantity detector in described main exhauster outlet port, be used for obtaining the air quantity in described outlet port;
Be arranged on the pressure transducer in described main exhauster outlet port, be used for obtaining the pressure in described outlet port.
Optimize, described Wind Coverage Calculation unit, the mode of calculating the air quantity in described booster fan outlet port is:
Q
2＝(P
0+P)*Q
1/P
0
Wherein, Q
1The air quantity in expression main exhauster outlet port;
Q
2The air quantity in expression booster fan outlet port;
P represents the pressure in main exhauster outlet port;
P
0The expression standard atmospheric pressure.
Optimize, the control gear of described desulphurization system also comprises:
Sintered material amount acquiring unit is used for obtaining current sintered material amount;
Sulfur-containing smoke gas amount computing unit is used for utilizing the design sintered material amount of described current sintered material amount and described desulphurization system, design sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas amount;
Sulfur-containing smoke gas percentage calculation unit is used for utilizing the air quantity in described main exhauster outlet port and described current sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas percentage;
The ratio calculation unit is for the ratio of the design sulfur-containing smoke gas percentage that calculates described current sulfur-containing smoke gas percentage and described desulphurization system;
Regulation unit for the frequency converter frequency of adjusting the recycle pump of described desulphurization system according to described ratio, is perhaps adjusted the pharmaceutical quantities of the desulfurizing tower spray of described desulphurization system according to described ratio.
Optimize, described sulfur-containing smoke gas amount computing unit, the mode of calculating described current sulfur-containing smoke gas amount is:
Q
Sulphur 1=Q
Sulphur 0* M
1/ M
0
Wherein, Q
Sulphur 1Represent current sulfur-containing smoke gas amount;
Q
Sulphur 0Expression design sulfur-containing smoke gas amount;
M
1Represent current sintered material amount;
M
0Expression design sintered material amount.
Optimize, described sulfur-containing smoke gas percentage calculation unit calculates described current sulfur-containing smoke gas percentage η
Sulphur 1Mode be: η
Sulphur 1=Q
Sulphur 1/ Q
1
The controlling method of embodiment of the invention desulphurization system and device by obtaining the practical condition of sintering process, are controlled the treating capacity of each equipment of desulphurization system in real time, to realize saving the purpose of the energy and material.On the one hand, by obtaining main exhauster actual air volume and pressure in process of production, adjust the rotating speed of booster fan; On the other hand, also can further obtain current sintered material amount, and by the sulfur-containing smoke gas amount that the sintering process that the sintered material quantitative response goes out produces, adjust the pharmaceutical quantities of power or the desulfurizing tower spray of recycle pump.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, the accompanying drawing that the following describes only is some embodiments that put down in writing among the application, for those of ordinary skills, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of sintering process;
Fig. 2 is the structural representation of desulphurization system;
Fig. 3 is the controlling method embodiment's 1 of embodiment of the invention desulphurization system flow chart;
Fig. 4 is the controlling method embodiment's 2 of embodiment of the invention desulphurization system flow chart;
Fig. 5 is the control gear embodiment's 1 of embodiment of the invention desulphurization system formation schematic representation;
Fig. 6 is the control gear embodiment's 2 of embodiment of the invention desulphurization system formation schematic representation.
Embodiment
In order to make those skilled in the art person understand better the present invention program, below in conjunction with drawings and embodiments the embodiment of the invention is described in further detail.
Embodiment one
As shown in Figure 3, show the controlling method embodiment's 1 of embodiment of the invention desulphurization system flow chart, comprising:
Step 101 is obtained air quantity and the pressure in main exhauster outlet port, and the pressure in described outlet port is negative pressure.
As shown in Figure 2, sinter fume is laggard to main exhauster 22 through the dust removal process of main electric cleaner 21, in order to guarantee the air suction efficiency of main exhauster 22, a booster fan 23 need to be set in the main exhauster outlet port, carry out supercharging by the flue gas of 23 pairs of desulphurization systems of booster fan.This mainly be because, in the flow process of flue gas, because the drag effect of equipment can make flue gas lose a part of pressure, increase along with equipment resistance, the outlet port of main exhauster just may form larger malleation, this will affect the exhausting effect of main exhauster, and then also may have influence on the normal operation of sintering system.For this reason, be provided with booster fan in the main exhauster outlet port, make the outlet port of main exhauster remain at micro-vacuum state (pressure of for example keeping the main exhauster outlet port for-200Pa).
As shown in the above, be not isolated the existence between booster fan and the main exhauster, conditioning each other between the two interacts, normally the carrying out of common guarantee sintering process.But, in the prior art but and underuse the two relation, but the booster fan that makes simply is operated under the design treating capacity, namely control booster fan and farthest the flue gas of desulphurization system is carried out pressurized treatment, this waste that must not cause the energy and material in conjunction with the design of actual sintered PRODUCTION STATUS.
The embodiment of the invention has just fully taken into account the relation between main exhauster and booster fan, the runnability of automatic monitoring main exhauster, and adjust in real time the working condition of booster fan according to the runnability of main exhauster, realize saving the purpose of the energy and material.
Particularly, this step namely is the step of automatic acquisition main exhauster runnability, comprises air quantity and two parameters of pressure of obtaining the main exhauster outlet port.Wherein, the air quantity in main exhauster outlet port can obtain by the air quantity detector that is arranged on described main exhauster outlet port; The pressure in main exhausting outlet port can obtain by the pressure transducer that is arranged on described main exhauster outlet port.
Need to prove that in the technological scheme that the embodiment of the invention provides, main exhauster can adopt the conversion system running.
Step 102 is utilized the air quantity in described outlet port and the air quantity in the booster fan outlet port in the described desulphurization system of calculation of pressure, and the air quantity in described outlet port is converted to the rotating speed of described booster fan.
Monitor two running parameters of main exhauster in step 101, after obtaining the current working state of main exhauster, this step then needs to determine the working state of the booster fan that is complementary with the current working state of main exhauster, comprises that mainly two are processed action: the one, determine the current air quantity that needs output of booster fan according to two running parameters of main exhauster; The 2nd, the current air quantity that need to export of foundation is determined the rotating speed of booster fan, and namely definite booster fan could be exported the air quantity of current needs under great rotating speed.
In fact, no matter be the air quantity of booster fan output or the rotating speed of booster fan, the two all is a kind of embodiments of booster fan work at present state, and the angle that only embodies is different.The air quantity in booster fan outlet port is to consider from result's angle, if be complementary with the current working state of main exhauster, it is micro-vacuum state that booster fan need to be exported great air quantity guarantee main exhauster outlet port; And the air quantity of booster fan is converted to rotating speed, and then be the angle from control and actual motion, realize the coupling of main exhauster and booster fan working state.
Method for the air quantity that calculates the booster fan outlet port can be summarized as follows:
By A Fojiade Luoding rule as can be known: pV=nRT; Wherein, p represents pressure, and V represents gas volume, and n represents amount of substance, and T represents kelvin temperature, and R represents gas constant, and 3/ mole in R=8.31 handkerchief rice is opened; Therefore, when n is constant, the pV/T=nR=constant.
Then, main exhauster outlet port and booster fan outlet port have following relation: p
1Q
1/ T
1=p
2Q
2/ T
2Wherein, p
1The gas pressure in expression main exhauster outlet port (needs to consider atmospheric pressure P
0With the outlet pressure P of main exhausting, i.e. p
1=P
0+ P, wherein the scope of P be-200Pa～-500Pa, P
0Be standard atmospheric pressure); Q
1The air quantity in expression main exhauster outlet port; T
1The temperature in expression main exhauster outlet port; p
2The gas pressure in expression booster fan outlet port is standard atmospheric pressure P
0Q
2The air quantity in expression booster fan outlet port.
Again because the temperature variation in main exhauster inlet and booster fan outlet port is less, can ignore to this.Therefore, p
1Q
1=p
2Q
2, i.e. (P
0+ P) * Q
1=p
0* Q
2, the Wind Coverage Calculation formula that has so far just obtained the booster fan outlet port is:
Q
2＝(P
0+P)*Q
1/P
0
Method for the rotating speed of convertor turbocharge blower fan can be summarized as follows:
In different time sections, square proportional variation, the i.e. Q of the air quantity of booster fan and rotating speed
a/ Q
b=(n
a/ n
b)
2, in knowing sometime section in the situation of the air quantity of booster fan and rotating speed, just can be with the outlet port air quantity Q of booster fan
2Be converted to rotation speed n
2
Step 103 is utilized the rotating speed of described booster fan to calculate the incoming frequency of frequency variator, and described incoming frequency is sent to described frequency variator, so that described frequency variator is controlled the rotating speed of described booster fan according to described incoming frequency.
By motor n
s=60f
1/ p (n
sSynchronous speed, f
1Ac power frequency, the p number of pole-pairs) and N
a/ N
b=(n
a/ n
b)
3As can be known, the running state of booster fan is directly controlled by the incoming frequency of frequency variator, therefore, if will make booster fan according to rotation speed n
2Running also needs further to calculate to know and rotation speed n
2The incoming frequency of the frequency variator that is complementary; And then the incoming frequency that calculates sent to frequency variator, frequency variator is worked under the control of this incoming frequency.Like this, frequency variator just can be controlled booster fan according to rotation speed n
2Running, thereby so that the air quantity Q that booster fan output and main exhauster work at present state are complementary
2, realize adjusting in real time according to the working condition of main exhauster the purpose of booster fan working condition, booster fan no longer adopts the constant speed mode to turn round, and just can stop the waste that the booster fan overpressurization causes energy, has realized the purpose of the saving energy.
Embodiment two
As shown in Figure 4, show the controlling method embodiment's 2 of embodiment of the invention desulphurization system flow chart, described method also comprises:
Step 201 is obtained current sintered material amount, and utilizes the design sintered material amount of described current sintered material amount and described desulphurization system, design sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas amount.
In order further to realize saving the purpose of the energy, the embodiment of the invention also can be adjusted according to the sulfur-containing smoke gas situation that sintering process produces the working state of recycle pump in the desulphurization system or desulfurizing tower in real time.
Sulfur-containing smoke gas amount and sintered material amount that sintering process produces have close relationship, can think that the two is directly proportional, the sintered material amount is larger, the sulfur-containing smoke gas amount that then produces is also just more, therefore, based on this relation between sulfur-containing smoke gas amount and the sintered material amount, can know the sulfur-containing smoke gas amount that this sintering process produces by the mode of obtaining the sintered material amount.
Particularly, the mode of calculating described current sulfur-containing smoke gas amount is:
Q
Sulphur 1=Q
Sulphur 0* M
1/ M
0
Wherein, Q
Sulphur 1Represent current sulfur-containing smoke gas amount; M
1Represent current sintered material amount; Q
Sulphur 0Expression design sulfur-containing smoke gas amount; M
0Expression design sintered material amount.
Need to prove that the sintered material amount in the embodiment of the invention refers to the inventory that the materials such as iron-bearing material, fuel, flux is mixed according to a certain ratio in proportioning room.
Step 202 utilizes the air quantity in described main exhauster outlet port and described current sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas percentage.
Because the dosage of desulfurizing tower spray-absorption agent is except relevant with the total amount of sulfur-containing smoke gas, also relevant with sulfur-containing smoke gas shared content in sinter fume, the sulfur-containing smoke gas that contains in the sinter fume is more, then the pharmaceutical quantities of spray is just larger, the desulfurization product that reaction generates in the desulfurizing tower is also just more, correspondingly needs the absorbing agent of desulfurization product that recycle pump extracts out from desulfurizing tower and injection just more.Therefore, in order to realize the reasonable adjustment of recycle pump or desulfurizing tower working state, except will knowing the sulfur-containing smoke gas amount that this sintering deposit produces, also to know sulfur-containing smoke gas shared percentage composition in the sinter fume of per unit volume.
Particularly, the mode of calculating described current sulfur-containing smoke gas percentage is:
η
Sulphur 1=Q
Sulphur 1/ Q
1
Wherein, η
Sulphur 1Represent current sulfur-containing smoke gas percentage; Q
Sulphur 1Represent current sulfur-containing smoke gas amount; Q
1The air quantity in expression main exhauster outlet port.
Step 203 is calculated the ratio of the design sulfur-containing smoke gas percentage of described current sulfur-containing smoke gas percentage and described desulphurization system.
Different from adjustment booster fan working state in the embodiment of the invention, the adjustment of recycle pump or desulfurizing tower working state is based on the two design treating capacity carries out, that is to say, each adjust that not to be the result that adjusted take last time raise or reduce as benchmark, but each adjustment to be reduced take the design treating capacity as benchmark all.
This step is calculated the ratio of current sulfur-containing smoke gas percentage and percent of sulfur-containing smoke gas of design, is exactly in order to determine adjusting range, thereby provides certain Data support for the working state of adjusting recycle pump or desulfurizing tower.
Step 204 is adjusted the power of the recycle pump of described desulphurization system according to described ratio, perhaps adjusts the pharmaceutical quantities of the desulfurizing tower spray of described desulphurization system according to described ratio.
This step namely is to utilize the definite amplitude of step 203 to adjust the process of recycle pump or desulfurizing tower working state.If the ratio of step 203 calculative determination is 50% (being that adjusting range is 50%), the power that this step is then adjusted recycle pump is 50% of design power, and the pharmaceutical quantities of perhaps adjusting the desulfurizing tower spray is 50% of designer drug dosage.If the ratio that step 203 is determined is 75%, then the power after the recycle pump adjustment is 75% of design power, and perhaps the pharmaceutical quantities of desulfurizing tower spray is 75% of designer drug dosage.Certainly, recycle pump and desulfurizing tower are the highest also can only work under the design treating capacity, the two can not be adjusted to surpass the design treating capacity.
Like this, enter main electric cleaner at sinter fume by large flue, through entering again main exhauster after the udst separation processing, and then enter via booster fan in the process of desulfurization in the desulfurizing tower, on the one hand, can automatically monitor the working state (comprising outlet port air quantity and pressure) of main exhauster, and (mainly be the rotating speed of adjusting booster fan with this working state of adjusting booster fan, change thus the discharge quantity of fan of booster fan), thereby reduce the energy of booster fan overpressurization waste, realize saving the purpose of the energy; On the other hand, the working state that can also adjust recycle pump or desulfurizing tower by air quantity and the sintered material amount in main exhauster outlet port (mainly referring to adjust the power of recycle pump, the pharmaceutical quantities of desulfurizing tower spray), make recycle pump or desulfurizing tower according to the treating capacity work that adapts with the sintering situation, can not only further save the energy, can also avoid the waste of the materials such as absorbing agent, improve desulphurization efficiency.
Embodiment three
As shown in Figure 5, show the control gear embodiment's 1 of embodiment of the invention desulphurization system schematic representation, described device comprises:
Main exhauster parameter acquiring unit 301 is used for obtaining air quantity and the pressure in main exhauster outlet port, and the pressure in described outlet port is negative pressure.
Further, described main exhauster parameter acquiring unit specifically comprises:
Be arranged on the air quantity detector in described main exhauster outlet port, be used for obtaining the air quantity in described outlet port;
Be arranged on the pressure transducer in described main exhauster outlet port, be used for obtaining the pressure in described outlet port.
Wind Coverage Calculation unit 302 is used for utilizing the air quantity in the booster fan outlet port of the air quantity in described outlet port and the described desulphurization system of calculation of pressure, and the air quantity in described outlet port is converted to the rotating speed of described booster fan;
Particularly, the mode of calculating the air quantity in described booster fan outlet port is:
Q
2＝(P
0-P)*Q
1/P
0
Wherein, Q
1The air quantity in expression main exhauster outlet port;
Q
2The air quantity in expression booster fan outlet port;
P represents the pressure in main exhauster outlet port;
P
0The expression standard atmospheric pressure.
In addition, in different time sections, square proportional variation, the i.e. Q of the air quantity of booster fan and rotating speed
a/ Q
b=(n
a/ n
b)
2, therefore, can be accordingly with the outlet port air quantity Q of booster fan
2Be converted to rotation speed n
2
Frequency computation part unit 303 is used for utilizing the rotating speed of described booster fan to calculate the incoming frequency of frequency variator, and described incoming frequency is sent to described frequency variator, so that described frequency variator is controlled the rotating speed of described booster fan according to described incoming frequency.
In different time sections, cube proportional variation, the i.e. N of the incoming frequency of frequency variator and booster fan rotating speed
a/ N
b=(n
a/ n
b)
3, therefore, can utilize the rotation speed n of booster fan
2The incoming frequency of the frequency variator that the calculating acquisition matches.
Like this, at frequency variator during according to the incoming frequency work that calculate to obtain, just can make booster fan according to according to rotation speed n
2Running, thus the air quantity Q that is complementary with main exhauster work at present state produced
2, realize adjusting in real time according to the working condition of main exhauster the purpose of booster fan working condition, booster fan no longer adopts the constant speed mode to turn round, and just can stop the waste that the booster fan overpressurization causes energy, has realized the purpose of the saving energy.
Embodiment four
As shown in Figure 6, show the control gear embodiment's 2 of embodiment of the invention desulphurization system flow chart, described device also comprises:
Sintered material amount acquiring unit 401 is used for obtaining current sintered material amount.
Sulfur-containing smoke gas amount computing unit 402 is used for utilizing the design sintered material amount of described current sintered material amount and described desulphurization system, design sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas amount;
Particularly, the mode of calculating described current sulfur-containing smoke gas amount is:
Q
Sulphur 1=Q
Sulphur 0* M
1/ M
0
Wherein, Q
Sulphur 1Represent current sulfur-containing smoke gas amount;
Q
Sulphur 0Expression design sulfur-containing smoke gas amount;
M
1Represent current sintered material amount;
M
0Expression design sintered material amount.
Sulfur-containing smoke gas percentage calculation unit 403 is used for utilizing the air quantity in described main exhauster outlet port and described current sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas percentage;
Particularly, calculate described current sulfur-containing smoke gas percentage η
Sulphur 1Mode be: η
Sulphur 1=Q
Sulphur 1/ Q
1
Adjust the power of recycle pump or the pharmaceutical quantities that desulfurizing tower sprays according to the ratio that the ratio calculation unit is determined, the two working state and sintering process are complementary, can not only further save the energy, can also avoid the waste of the materials such as absorbing agent, improve desulphurization efficiency.
The present invention program can describe in the general context of the computer executable instructions of being carried out by computer, for example program unit.Usually, program unit comprises the routine carrying out particular task or realize particular abstract data type, program, object, assembly, data structure etc.Also can in DCE, put into practice the present invention program, in these DCEs, be executed the task by the teleprocessing equipment that is connected by communication network.In DCE, program unit can be arranged in the local and remote computer-readable storage medium that comprises memory device.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses is difference with other embodiments.Especially, for device embodiment, because its basic simlarity is in embodiment of the method, so describe fairly simplely, relevant part gets final product referring to the part explanation of embodiment of the method.Device embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can select according to the actual needs wherein some or all of module to realize the purpose of present embodiment scheme.Those of ordinary skills namely can understand and implement in the situation of not paying creative work.
More than the embodiment of the invention is described in detail, used embodiment herein the present invention set forth, above embodiment's explanation just is used for helping to understand method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1. the controlling method of a desulphurization system is characterized in that, described method comprises:
Obtain air quantity and the pressure in main exhauster outlet port, the pressure in described outlet port is negative pressure;
Utilize the air quantity in described outlet port and the air quantity in the booster fan outlet port in the described desulphurization system of calculation of pressure, and the air quantity in described outlet port is converted to the rotating speed of described booster fan;
Utilize the incoming frequency of the rotating speed calculating frequency variator of described booster fan, and described incoming frequency is sent to described frequency variator, so that described frequency variator is controlled the rotating speed of described booster fan according to described incoming frequency.
2. method according to claim 1 is characterized in that, described air quantity and the pressure that obtains the main exhauster outlet port specifically comprises:
Obtain the air quantity in described outlet port by the air quantity detector that is arranged on described main exhauster outlet port;
Obtain the pressure in described outlet port by the pressure transducer that is arranged on described main exhauster outlet port.
3. method according to claim 2 is characterized in that, the mode of calculating the air quantity in described booster fan outlet port is:
Q
2＝(P
0+P)*Q
1/P
0
Wherein, Q
1The air quantity in expression main exhauster outlet port;
Q
2The air quantity in expression booster fan outlet port;
P represents the pressure in main exhauster outlet port;
P
0The expression standard atmospheric pressure.
4. each described method is characterized in that according to claim 1-3, the pressure in described main exhauster outlet port is-and 200Pa～-500Pa.
5. each described method is characterized in that according to claim 1-3, and described method also comprises:
Obtain current sintered material amount, and utilize the design sintered material amount of described current sintered material amount and described desulphurization system, design sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas amount;
Utilize air quantity and the described current sulfur-containing smoke gas amount in described main exhauster outlet port to calculate current sulfur-containing smoke gas percentage;
Calculate the ratio of the design sulfur-containing smoke gas percentage of described current sulfur-containing smoke gas percentage and described desulphurization system;
Adjust the frequency converter frequency of the recycle pump of described desulphurization system according to described ratio, perhaps adjust the pharmaceutical quantities of the desulfurizing tower spray of described desulphurization system according to described ratio.
6. method according to claim 5 is characterized in that, the mode of calculating described current sulfur-containing smoke gas amount is:
Q
Sulphur 1=Q
Sulphur 0* M
1/ M
0
Wherein, Q
Sulphur 1Represent current sulfur-containing smoke gas amount;
Q
Sulphur 0Expression design sulfur-containing smoke gas amount;
M
1Represent current sintered material amount;
M
0Expression design sintered material amount.
7. method according to claim 5 is characterized in that, calculates described current sulfur-containing smoke gas percentage η
Sulphur 1Mode be:
η
Sulphur 1=Q
Sulphur 1/ Q
1
8. the control gear of a desulphurization system is characterized in that, described device comprises:
The main exhauster parameter acquiring unit is used for obtaining air quantity and the pressure in main exhauster outlet port, and the pressure in described outlet port is negative pressure;
The Wind Coverage Calculation unit is used for utilizing the air quantity in the booster fan outlet port of the air quantity in described outlet port and the described desulphurization system of calculation of pressure, and the air quantity in described outlet port is converted to the rotating speed of described booster fan;
The frequency computation part unit is used for utilizing the rotating speed of described booster fan to calculate the incoming frequency of frequency variator, and described incoming frequency is sent to described frequency variator, so that described frequency variator is controlled the rotating speed of described booster fan according to described incoming frequency.
9. device according to claim 8 is characterized in that, described main exhauster parameter acquiring unit specifically comprises:
Be arranged on the air quantity detector in described main exhauster outlet port, be used for obtaining the air quantity in described outlet port;
Be arranged on the pressure transducer in described main exhauster outlet port, be used for obtaining the pressure in described outlet port.
10. device according to claim 9 is characterized in that, described Wind Coverage Calculation unit, and the mode of calculating the air quantity in described booster fan outlet port is:
Q
2＝(P
0+P)*Q
1/P
0
Wherein, Q
1The air quantity in expression main exhauster outlet port;
Q
2The air quantity in expression booster fan outlet port;
P represents the pressure in main exhauster outlet port;
P
0The expression standard atmospheric pressure.
11. each described device is characterized in that according to claim 8-10, described device also comprises:
Sintered material amount acquiring unit is used for obtaining current sintered material amount;
Sulfur-containing smoke gas amount computing unit is used for utilizing the design sintered material amount of described current sintered material amount and described desulphurization system, design sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas amount;
Sulfur-containing smoke gas percentage calculation unit is used for utilizing the air quantity in described main exhauster outlet port and described current sulfur-containing smoke gas amount to calculate current sulfur-containing smoke gas percentage;
The ratio calculation unit is for the ratio of the design sulfur-containing smoke gas percentage that calculates described current sulfur-containing smoke gas percentage and described desulphurization system;
Regulation unit for the frequency converter frequency of adjusting the recycle pump of described desulphurization system according to described ratio, is perhaps adjusted the pharmaceutical quantities of the desulfurizing tower spray of described desulphurization system according to described ratio.
12. device according to claim 11 is characterized in that, described sulfur-containing smoke gas amount computing unit, and the mode of calculating described current sulfur-containing smoke gas amount is:
Q
Sulphur 1=Q
Sulphur 0* M
1/ M
0
Wherein, Q
Sulphur 1Represent current sulfur-containing smoke gas amount;
Q
Sulphur 0Expression design sulfur-containing smoke gas amount;
M
1Represent current sintered material amount;
M
0Expression design sintered material amount.
13. device according to claim 11 is characterized in that, described sulfur-containing smoke gas percentage calculation unit calculates described current sulfur-containing smoke gas percentage η
Sulphur 1Mode be:
η
Sulphur 1=Q
Sulphur 1/ Q
1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579453.5A CN103032360B (en) | 2012-12-27 | 2012-12-27 | Method and device for controlling desulfuration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579453.5A CN103032360B (en) | 2012-12-27 | 2012-12-27 | Method and device for controlling desulfuration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103032360A true CN103032360A (en) | 2013-04-10 |
| CN103032360B CN103032360B (en) | 2015-04-08 |
Family
ID=48019618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210579453.5A Active CN103032360B (en) | 2012-12-27 | 2012-12-27 | Method and device for controlling desulfuration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103032360B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900101A (en) * | 2014-03-21 | 2014-07-02 | 广东电网公司电力科学研究院 | Pressure regulating method and system based on wind and smoke system |
| WO2018028243A1 (en) * | 2016-08-08 | 2018-02-15 | 中冶长天国际工程有限责任公司 | Ammonia injection amount control method and apparatus for activated carbon desulfurization and denitration system |
| CN110345098A (en) * | 2019-06-20 | 2019-10-18 | 华润水泥（龙岩曹溪）有限公司 | Kiln head exhaust fan air quantity Automatic adjustment method, device, system, equipment and medium |
| CN110500310A (en) * | 2019-08-30 | 2019-11-26 | 中冶北方（大连）工程技术有限公司 | Main exhauster matches automatic control device and method with booster fan |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572104A (en) * | 1992-05-20 | 1996-11-05 | Texas Instruments Incorporated | Furnace control apparatus |
| US20030010647A1 (en) * | 2001-07-10 | 2003-01-16 | Salisbury Bruce A. | System and method for removing a solution phase metal from process liquor |
| CN1785483A (en) * | 2005-11-11 | 2006-06-14 | 南京科远控制工程有限公司 | Control method wet method smoke desulfur for elecric power plant |
| CN201613099U (en) * | 2010-03-30 | 2010-10-27 | 北京卓环科技有限公司 | Wet-type smoke purification machine set |
| WO2011073988A2 (en) * | 2009-12-17 | 2011-06-23 | Clean Marine As | Means and methods for utilizing sodium hydroxide |
| CN202013212U (en) * | 2011-03-29 | 2011-10-19 | 东北电力科学研究院有限公司 | Air quantity calculating system of variable speed or constant speed fan |
-
2012
- 2012-12-27 CN CN201210579453.5A patent/CN103032360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572104A (en) * | 1992-05-20 | 1996-11-05 | Texas Instruments Incorporated | Furnace control apparatus |
| US20030010647A1 (en) * | 2001-07-10 | 2003-01-16 | Salisbury Bruce A. | System and method for removing a solution phase metal from process liquor |
| CN1785483A (en) * | 2005-11-11 | 2006-06-14 | 南京科远控制工程有限公司 | Control method wet method smoke desulfur for elecric power plant |
| WO2011073988A2 (en) * | 2009-12-17 | 2011-06-23 | Clean Marine As | Means and methods for utilizing sodium hydroxide |
| CN201613099U (en) * | 2010-03-30 | 2010-10-27 | 北京卓环科技有限公司 | Wet-type smoke purification machine set |
| CN202013212U (en) * | 2011-03-29 | 2011-10-19 | 东北电力科学研究院有限公司 | Air quantity calculating system of variable speed or constant speed fan |
Non-Patent Citations (2)
| Title |
|---|
| 张永军等: ""增压风机和引风机协调控制策略的应用"", 《自动化博览》 * |
| 谭永强等: ""增压风机电动机变频改造的应用"", 《广东电力》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900101A (en) * | 2014-03-21 | 2014-07-02 | 广东电网公司电力科学研究院 | Pressure regulating method and system based on wind and smoke system |
| CN103900101B (en) * | 2014-03-21 | 2016-02-24 | 广东电网公司电力科学研究院 | Based on pressure regulation method and the system of air and flue system |
| WO2018028243A1 (en) * | 2016-08-08 | 2018-02-15 | 中冶长天国际工程有限责任公司 | Ammonia injection amount control method and apparatus for activated carbon desulfurization and denitration system |
| CN107694300A (en) * | 2016-08-08 | 2018-02-16 | 中冶长天国际工程有限责任公司 | The ammonia spraying amount control method and device of active carbon desulfurization denitrating system |
| RU2678076C1 (en) * | 2016-08-08 | 2019-01-22 | Чжуне Чантянь Интернэшнл Инджиниринг Ко., Лтд. | Method and device for controlling amount of ammonia injected in system for desulfurization and denitrification with activated carbon |
| CN107694300B (en) * | 2016-08-08 | 2020-01-17 | 中冶长天国际工程有限责任公司 | Ammonia spraying amount control method and device of activated carbon desulfurization and denitrification system |
| CN110345098A (en) * | 2019-06-20 | 2019-10-18 | 华润水泥（龙岩曹溪）有限公司 | Kiln head exhaust fan air quantity Automatic adjustment method, device, system, equipment and medium |
| CN110500310A (en) * | 2019-08-30 | 2019-11-26 | 中冶北方（大连）工程技术有限公司 | Main exhauster matches automatic control device and method with booster fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103032360B (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104034175B (en) | A kind of energy-saving and emission-reducing sintering process | |
| CN104190243B (en) | The coal-burning boiler method of carbide slag desulfurization and equipment thereof | |
| CN102251100B (en) | Method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity | |
| CN103032360B (en) | Method and device for controlling desulfuration system | |
| CN104229855B (en) | Utilize electricity generation boiler or the technique of sintering device flue gas on-line heating oxidation sweetening ash | |
| CN104019672A (en) | Sintering flue gas treatment and cyclic utilization method | |
| CN204093300U (en) | Coal-burning boiler carbide slag desulphurization plant | |
| CN203017969U (en) | Intelligent flue gas desulphurization and purification control system | |
| CN102003886B (en) | Sintering machine flue gas separation conduction type desulfurizing device and method | |
| CN207741073U (en) | A kind of sintering flue gas circulatory system | |
| CN204718348U (en) | High-temperature hot-air and coal slime drying control system are produced in coal mine light concentration mash gas oxidation | |
| CN204522735U (en) | A kind of circulating fluid bed semi-drying method flue gas desulfurization device | |
| CN212269893U (en) | Low-nitrogen calcination ultralow-emission environment-friendly lime kiln | |
| CN201885585U (en) | Guiding type desulfurizer for smoke of sintering machine | |
| CN203147796U (en) | Biomass fuel conveying device | |
| CN103196150B (en) | Biomass fuel conveying device | |
| CN201711091U (en) | Horizontal drying tower flue gas desulfurizing device adopting dense-phase circulating fluidization | |
| CN203810917U (en) | Production-increasing modification system for sintering machine | |
| CN201666738U (en) | Pre-heated one section waste flue gas afterheat utilizing system of pellet grate machine | |
| CN204690031U (en) | A kind of converter steelmaking electrostatic precipitation system | |
| CN205435462U (en) | A solid sulphur structure of desulphurization of exhaust gas for cement industry | |
| CN203971682U (en) | The hot flue gas processing device of a kind of fine cleaned coal drying system | |
| CN207856670U (en) | A kind of dry-type calcium-spraying flue gas desulfurization system | |
| CN103301921A (en) | Energy-saving and emission-reducing device and method for industrial vertical mill | |
| CN203464764U (en) | Bypass wind relieving system of cement kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170801 Address after: 410205 No. 180, Lu Song Road, hi tech Zone, Hunan, Changsha Co-patentee after: Hunan Changtian Automatic Control Engineering Co., Ltd. Patentee after: China to long days International Engineering Co., Ltd. Address before: 410007 Changsha City, Hunan province labor Road No. 1 Patentee before: ZhongYe Changtian International Engineering Co., Ltd. |
|
| TR01 | Transfer of patent right |