CN106048131B - Explosion prevention controlling process and device based on converter electric precipitator system - Google Patents
Explosion prevention controlling process and device based on converter electric precipitator system Download PDFInfo
- Publication number
- CN106048131B CN106048131B CN201610638278.0A CN201610638278A CN106048131B CN 106048131 B CN106048131 B CN 106048131B CN 201610638278 A CN201610638278 A CN 201610638278A CN 106048131 B CN106048131 B CN 106048131B
- Authority
- CN
- China
- Prior art keywords
- explosion
- gas
- electric precipitator
- risk
- flue
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrostatic Separation (AREA)
Abstract
The present invention provides a kind of explosion prevention controlling process and device based on converter electric precipitator system, this method comprises: the Gas Parameters at acquisition electric precipitator flue entrance；Obtain the power parameter of the electric precipitator comprising: the secondary voltage of power supply and the flashover number of high voltage power supply；Calculated according to the Gas Parameters and judge risk of explosion there are situations；According to judged risk of explosion there are situation, the secondary voltage and flashover number that reduce the electric precipitator high voltage power supply are chosen whether.By acquiring the Gas Parameters at the electric precipitator flue entrance in real time, calculating the explosion limit of mixed gas at flue entrance and judging that flue gas with the presence or absence of risk of explosion, adjusts the electric precipitator high voltage power supply according to result；It avoids electric precipitator and fires phenomenon during coal gas dust removal, improve the safety of converter electric precipitator system.
Description
Technical field
The present invention relates to industrial gas electrostatic precipitation technology field, more particularly to a kind of based on converter electric precipitator system
Explosion prevention controlling process and device.
Background technique
Electric precipitator is differed on biggish metal anode and cathode in two radius of curvature, and high voltage direct current, dimension are passed through
Hold the electrostatic field for being enough to make gas ionization, generated electronics after gas ionization: anion and cation are adsorbed on and pass through
On the dust of electric field, dust is made to obtain charge.The different dust of charged polarity under the action of electric field force, respectively to opposed polarity
Electrode movement, deposition on the electrode, and achieve the purpose that dust and gas separation.Therefore, electric precipitator is widely used in
The fields such as metallurgy, building materials, chemical industry, papermaking are recycled with reaching protection environment and resource.
In gas purification field, especially for flue gas of high temperature, high humidity in converter steelmaking process, electrostatic precipitation
Technology has higher efficiency of dust collection and cost performance.Since coal gas belongs to flammable explosive gas, along in converter steelmaking process
Mixed air, explode three elements in two elements met, if not controlling spark in coal gas electric precipitation purification process,
Coal gas will likely explode in electric precipitator, even normally run to influence efficiency of dust collection.
However, converter current coal gas electric precipitator, no matter dry electric precipitation device or wet electrical dust precipitator, can not be thorough
Bottom solves the problems, such as explosion-proof.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide one kind to be based on converter electric precipitator system
The explosion prevention controlling process and device of system prevent explosion for solving in the coal gas of converter electric precipitator course of work in the prior art
Problem.
In order to achieve the above objects and other related objects, the present invention provides a kind of based on the explosion-proof of converter electric precipitator system
Control method, the electric precipitator is for smelting operation, comprising:
Acquire the Gas Parameters at electric precipitator flue entrance；
Obtain the power parameter of the electric precipitator comprising: the secondary voltage and flashover number of high voltage power supply；
Calculated according to the Gas Parameters and judge risk of explosion there are situations；
According to the judgement risk of explosion there are situation, choose whether to reduce the secondary of the electric precipitator high voltage power supply
Voltage and flashover number.
Another object of the present invention is to provide the explosion-proof control device based on converter electric precipitator system, the electric precipitations
Device is for smelting operation, comprising:
Acquisition module, for acquiring the Gas Parameters at electric precipitator flue entrance；
Power parameter obtain module, for obtaining the power parameter of the electric precipitator comprising: high voltage power supply it is secondary
The flashover number of voltage and high voltage power supply；
Explosion-proof control module, for calculated and judged according to the Gas Parameters risk of explosion there are situations；
Module is adjusted, for, there are situation, choosing whether to reduce the electric precipitator according to the judgement risk of explosion
The secondary voltage and flashover number of high voltage power supply.
As described above, the explosion prevention controlling process and device of the invention based on converter electric precipitator system, has with following
Beneficial effect:
By acquiring the Gas Parameters at the electric precipitator flue entrance in real time, mixed gas at flue entrance is calculated
Explosion limit, detecting flue gas compared with the concentration value of coal gas in flue gas whether there is risk of explosion, detect adjustment institute according to result
Electric precipitator high voltage power supply is stated, when there are the high voltage power supplies for when risk of explosion, judging the electric precipitator high voltage power supply for flue gas
Whether flashover number is greater than zero, if it is greater than zero, the secondary voltage by reducing high voltage power supply makes the flashover number of high voltage power supply
It is zero；Phenomenon is fired during coal gas dust removal so as to avoid electric precipitator, improves converter electric precipitator system
Safety.
Detailed description of the invention
Fig. 1 is shown as the explosion prevention controlling process flow chart provided by the invention based on converter electric precipitator system；
Fig. 2 is shown as first of step S3 in the explosion prevention controlling process provided by the invention based on converter electric precipitator system
Flow chart；
Fig. 3 is shown as second of step S3 in the explosion prevention controlling process provided by the invention based on converter electric precipitator system
Flow chart；
Fig. 4 is shown as the flow chart of the explosion prevention controlling process step S4 provided by the invention based on converter electric precipitator system；
Fig. 5 is shown as the explosion-proof control device structural block diagram provided by the invention based on converter electric precipitator system；
Fig. 6 is shown as explosion-proof control device the first complete structure block diagram provided by the invention based on converter electric precipitator system；
Fig. 7 is shown as explosion-proof control device the second complete structure block diagram provided by the invention based on converter electric precipitator system；
Fig. 8 is shown as the structure chart of the explosion-proof control device embodiment provided by the invention based on converter electric precipitator system.
Component label instructions:
1 fume component analysis instrument
2 electric precipitators
3 explosion-proof control modules
4 high voltage power supplies
5 steel making operation control systems
6 converters
7 waste heat boilers
8 first dust pelletizing systems
9 main air blowers
10 Coal gas switch valves
M1 acquisition module
M2 power parameter obtains module
The explosion-proof control module of M3
M4 adjusts module
M5 smelting parameter obtains module
M311 computing unit
M312 explosion judging unit
The first judging unit of M313
The second judging unit of M314
M321 gas concentration judging unit
M322 third judging unit
The 4th judging unit of M323
M41 holding unit
M42 flashover number judging unit
M43 the first adjustment unit
M44 second adjustment unit
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Fig. 1 is please referred to Fig. 8.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, being not intended to limit the invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed skill
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Embodiment 1
As shown in Figure 1, providing a kind of explosion prevention controlling process flow chart based on converter electric precipitator system for the present invention, wrap
It includes:
Step S1 acquires the Gas Parameters at electric precipitator flue entrance；
Wherein, the Gas Parameters include gas componant and concentration；By being preferably provided at electric precipitator flue entrance
Fume component analysis instrument acquires the corresponding concentration of gas componant and various gas componants in Gas Parameters；
Step S2 obtains the power parameter of the electric precipitator comprising: the secondary voltage and flashover number of high voltage power supply；
Wherein, electric precipitator power parameter is mainly high voltage power supply parameter, further includes secondary current；
Step S3, calculated according to the Gas Parameters and judge risk of explosion there are situations；
Wherein, explosion limit in the Gas Parameters of calculating is dense compared with gas concentration value or by the oxygen in flue gas
Degree, carbonomonoxide concentration are compared with limit oxygen concentration, limit carbonomonoxide concentration threshold value respectively, are judged quick-fried existing for flue gas
Fried risk situation；
Step S4 chooses whether to reduce the electric precipitator high-voltage electricity according to the judgement risk of explosion there are situation
The secondary voltage and flashover number in source.
In this example, it by the risk of explosion at real-time judge flue entrance there are situation, chooses whether to adjust institute
The mode of electric precipitator is stated to reduce the flashover number of high voltage power supply, has reached and has prevented converter electric precipitator system during the work time
Explosion issues, improve the safety of converter electric precipitator system.
As shown in Fig. 2, for step S3 in the explosion prevention controlling process provided by the invention based on converter electric precipitator system
First pass figure, comprising:
Step S311 calculates gas concentration and coal gas in flue gas according to the smoke components and concentration of flue entrance acquisition
Explosion limit；
Wherein, trie rule is looked into according to reason, when mixed gas anhydrous steam, calculation formula is as follows:
V in formula (1)1To VnThe volume fraction of various gases, L in difference mixed gas1To LnIt is each respectively in mixed gas
The explosion limit (explosion limit includes upper explosion limit and lower explosion limit) of kind gas, n are burning mixture type, LmFor
(it includes L for the explosion limit of mixed gasThe m upper limitAnd LM lower limit), calculating is the explosion limit of fuel gas in mixed gas.
When mixed gas includes vapor, calculation formula is as follows:
L in formula (2)tFor the explosion limit of fuel gas in mixed gas, can be calculated by formula (1), B is inertia
The content of gas, vapor are one kind of inert gas, in this application, the referred to coal gas of mixed gas.
Step S312 is compared with the explosion limit section calculated according to the gas concentration in flue gas, judges institute
The flue gas at flue entrance is stated with the presence or absence of risk of explosion；
Step S313 then determines that flue enters when gas concentration is located in the gas explosion limit range in the flue gas
There are risk of explosion for flue gas at mouthful；
Step S314 then determines flue when gas concentration is located at other than the gas explosion limit range in the flue gas
Risk of explosion is not present in the flue gas of inlet.
In the present embodiment, by calculating the explosion limit section (gas explosion limit range) of mixed gas, by coal gas
Concentration is compared with explosion limit section, can judge whether flue entrance flue gas has risk of explosion；To according to quick-fried
Fried risk takes the safety measure of response.
As shown in figure 3, for step S3 in the explosion prevention controlling process provided by the invention based on converter electric precipitator system
Second flow chart；Include:
Wherein, the concentration of the carbon monoxide and oxygen at electric precipitator flue entrance in flue gas is acquired, and judges the wind that explodes
Danger there are situation,
Step S321 judges the flue according to oxygen concentration in flue gas and carbonomonoxide concentration compared with preset threshold
The flue gas of inlet whether there is risk of explosion；
Wherein, oxygen concentration and carbonomonoxide concentration are respectively corresponding with preset threshold, and the preset threshold is quick-fried according to converter
It can be some critical value can also be some interval range set by fried risk.
Step S322, when the carbonomonoxide concentration is higher than 12% and oxygen concentration is located in 5%~19% range, then
There are risk of explosion for flue gas at judgement flue entrance；
Wherein, when carbonomonoxide concentration be higher than 12% when and oxygen concentration also is located at 5%~19% interval range at this time
Interior, then there are risk of explosion for the flue gas for determining at flue entrance.
Step S323, when the carbonomonoxide concentration is lower than 12% or oxygen concentration is lower than 5% or oxygen concentration is higher than
When 19%, then determine that risk of explosion is not present in the flue gas at flue entrance；
Wherein, when oxygen concentration is lower than lower than 5%, then determine that explosion wind is not present in the flue gas at flue entrance
Danger；When oxygen concentration is higher than in 19% when, then there is no risk of explosion for the flue gas for determining at flue entrance；Work as carbonomonoxide concentration
When lower than 12%, then determine that risk of explosion is not present in the flue gas at flue entrance.
In the present embodiment, aforesaid way is second of implementation process for judging gas explosion in converter, meanwhile, at two kinds
Judge on the basis of whether having risk of explosion mode in converter, is calculated according to technological parameter needed for different smelting processes corresponding quick-fried
Fried limiting threshold value, forms database；When flue gas analyzer breaks down can assistant analysis risk of explosion there are situation, realize
The Off-line control of smelting process.
As shown in figure 4, for step S4 in the explosion prevention controlling process provided by the invention based on converter electric precipitator system
Flow chart specifically includes:
Step S401, risk of explosion at the flue entrance be there are situation in the absence of, then keep the electricity
The supply voltage of deduster；
Specifically, when the concentration of coal gas is not in explosion limit section calculated, risk of explosion, which belongs to, to be not present；Then may be used
To ignore, need to only monitor in real time all right.
Step S402, risk of explosion at the flue entrance be there are situation in the presence of, judge the electric precipitation
Whether the flashover number of the high voltage power supply of device is greater than zero；
Step S403 reduces the secondary voltage of the electric precipitator if the flashover number of the high voltage power supply is greater than zero
It is worth until the flashover number of high voltage power supply is equal to zero；
Step S404 keeps the power supply of the electric precipitator if the flashover number of the high voltage power supply is not more than zero
Voltage.
In the present embodiment, by acquiring gas componant and various gas in Gas Parameters at electric precipitator flue entrance
The corresponding concentration of body ingredient calculates gas concentration and corresponding explosion limit in the flue entrance flue gas；Judged by comparison
Flue gas explosion risk.When there are risk of explosion, judge whether the flashover number of the high voltage power supply of the electric precipitator is greater than zero, such as
When the flashover number of fruit high voltage power supply is greater than zero, reduce flashover number etc. of the secondary voltage value until high voltage power supply of the electric precipitator
Until zero；If the flashover number of high voltage power supply is not more than zero, the supply voltage of the electric precipitator is kept, according to explosion
The state of risk adjusts the secondary voltage value of the electric precipitator in real time, has reached and has evaded electric precipitator drop before discharging or recycling
There is the phenomenon that detonation in temperature and dust removal process, improves the explosion-proof security performance of converter electric precipitator system.
Embodiment 2
As shown in figure 5, being the explosion-proof control device structural block diagram provided by the invention based on converter electric precipitator system, packet
It includes:
Acquisition module M1, for acquiring the Gas Parameters at electric precipitator flue entrance, the Gas Parameters include gas
Ingredient and concentration；
Power parameter obtains module M2, for obtaining the power parameter of the electric precipitator comprising: the two of high voltage power supply
Secondary voltage and flashover number；
Explosion-proof control module M3, for calculated and judged according to the Gas Parameters risk of explosion there are situations；
Module M4 is adjusted, for, there are situation, choosing whether to reduce the electric precipitation according to the judgement risk of explosion
The secondary voltage and flashover number of device high voltage power supply.
In the present embodiment, before explosion-proof control module M3, smelting parameter can also be set and obtain module M5, for obtaining
Take raw material and technological parameter in smelting process and store the explosion limit value of flue gas in smelting process, be risk of explosion there are feelings
Condition carries out data analysis；When flue gas analyzer breaks down, controlled using auxiliary of the similar historical data to high voltage power supply,
Avoid flammable gas explosion.
Obtain the real-time data acquisition of module M2 by acquisition module M1 and power parameter, explosion-proof control module M3 is according to sentencing
Whether the Gas Parameters of disconnected acquisition have risk of explosion；And module M4 is adjusted according to whether having risk of explosion to choose whether to reduce
The secondary voltage and flashover number of the electric precipitator high voltage power supply, so as to avoid converter electric precipitator system explode can
It can property.
Fig. 6 is shown as the explosion-proof control device complete structure block diagram provided by the invention based on converter electric precipitator system；
The explosion-proof control module M3, comprising:
Computing unit M311, gas componant and concentration for being acquired according to flue entrance are calculated and are mixed in flue entrance
The explosion limit of gas；
Explode judging unit M312, for being compared according to the gas composition of mixed gas with calculated explosion limit
Compared with judging flue gas at the flue entrance with the presence or absence of risk of explosion；
First judging unit M313 then sentences for the gas concentration when the mixed gas not within the scope of explosion limit
Determine the flue gas at flue entrance and risk of explosion is not present；
Second judging unit M314 then determines cigarette for working as the mixed gas gas concentration within the scope of explosion limit
There are risk of explosion for the flue gas of road inlet.
Wherein, the adjustment module M4 is specifically included:
Execution unit M41, what it is for the risk of explosion at the flue entrance is that there is no then keep institute there are situation
State the supply voltage of electric precipitator；
Flashover number judging unit M42 sentences in the presence of being there are situation for work as the risk of explosion at the flue entrance
Whether the flashover number of high voltage power supply of the electric precipitator of breaking is greater than zero；
The first adjustment unit M43 reduces the electric precipitator if the flashover number for the high voltage power supply is greater than zero
Secondary voltage value until high voltage power supply flashover number be equal to zero until；
Second adjustment unit M44 keeps the electricity to remove if the flashover number for the high voltage power supply is not more than zero
The supply voltage of dirt device.
In the present embodiment, by acquisition module acquire at electric precipitator flue entrance gas componant and various gases at
The corresponding concentration divided, computing unit M311 calculate the explosion limit of mixed gas in the flue entrance；Gas concentration judgement is single
First M312 is according to smoke components, concentration calculation and judges that the mixed gas whether within the scope of explosion limit, is exploded when existing
When risk；The flashover number judging unit M42 judges whether the flashover number of the high voltage power supply of the electric precipitator is greater than zero, if
When the flashover number of high voltage power supply is greater than zero, the first adjustment unit M43 reduce the secondary voltage value of the electric precipitator until
Until the flashover number of high voltage power supply is equal to zero；If the flashover number of secondary voltage high voltage power supply is not more than zero, second adjustment list
First M44 then keeps the supply voltage of the electric precipitator, adjusts the two of the electric precipitator in real time according to the state of risk of explosion
Secondary voltage value, reached evade electric precipitator discharge or recycle before cooling and dust removal process in there is the phenomenon that detonation, improve
The explosion-proof security performance of converter electric precipitator system.
As shown in fig. 7, completely being tied for the explosion-proof control device second provided by the invention based on converter electric precipitator system
Structure block diagram；
Wherein, explosion-proof control module is that the another of Fig. 6 realizes structure in Fig. 7；Gas Parameters include oxygen in flue gas
Concentration and carbonomonoxide concentration, the explosion-proof control module specifically include:
Gas concentration judging unit M321, for according to oxygen concentration in flue gas and carbonomonoxide concentration and preset threshold ratio
Compared with judging flue gas at the flue entrance with the presence or absence of risk of explosion；
Third judging unit M322, for when the carbonomonoxide concentration be higher than 12% and oxygen concentration be located at 5%~
When in 19% range, then there are risk of explosion for the flue gas for determining at flue entrance；
4th judging unit M323, for when the carbonomonoxide concentration is lower than 12% or oxygen concentration is lower than 5% or oxygen
When gas concentration is higher than 19%, then determine that risk of explosion is not present in the flue gas at flue entrance.
It in the present embodiment, include oxygen and carbon monoxide in flue gas, if further include other fuel gas in flue gas,
Similarly, and through the above way it is controlled, be will not repeat them here.
Embodiment 3
As shown in figure 8, being the knot of the explosion-proof control device embodiment provided by the invention based on converter electric precipitator system
Composition, comprising:
Flue gas of converter needs to carry out cooling and dedusting before discharge or recycling, when the flue gas that converter 6 generates passes through waste heat
After the cooling of boiler 7 and first dust pelletizing system 8, need to realize the refined dedusting of converter gas by electric precipitator 2；At this point, flue gas
Main component has CO, CO2, N2, O2, H2 etc., and two kinds of main combustible gas components of CO, H2 are contained in mixed flue gas, are existed
Certain risk of explosion.Trie rule is looked by reason, the explosion limit L of two kinds of burning mixtures can be calculated by formula (1)m
(it includes LThe m upper limitAnd LM lower limit), as shown by the following formula:
V in formula (3)1、V2For the volume fraction of each group mixed composition；L1、L2It is then the explosion pole of mixed gas each group component
Limit.The gas componant and concentration detected by fume component analysis instrument 1 is calculated using explosion-proof control module 3 (M3 in Fig. 5) and is adopted
The explosion limit range of mixed gas in the flue gas of collection；By calculating the Mixed Gases Explosion limit, existing flue gas mixing is compared
The volume fraction of object judges concrete condition of the flue gas there are risk of explosion, and when there are risk of explosion, explosion-proof control module 3 is sentenced
Whether the flashover number of broken height voltage source 4 is greater than zero, if the flashover number of high voltage power supply is greater than zero, explosion-proof control module 3 will be issued
Instruction, turns down 4 secondary voltage value of high voltage power supply until the flashover of secondary voltage high voltage power supply counts to zero；When there is no explosions
When risk, then high voltage power supply 4 operates normally.
Specifically, it when containing vapor in smoke components, needs vapor utilizing above-mentioned formula as inert gas
(2) the explosion limit L of combustible constituent in mixed gas is calculatedtAnd inert gas content is the explosion limit of B.
When calculating the explosion limit of the mixed gas containing vapor, other steps are same as above, and will not repeat them here.
The fume component analysis instrument 1 being mounted on flue gas main pipeline, when a failure occurs it, analyzer issue message to explosion-proof
Control module 3, explosion-proof control module 3 are fed back the fault type of fault point to steel making operation control system 5 by PORT COM,
Operator is reminded to safeguard；When fume component analysis instrument 1 breaks down, existing explosion-proof control module 3 will stop pre-
Fixed algorithm and compare work, the control model under identical smelting process of historical record exported by explosion-proof control module 3,
And it is used for the control of equipment at this time and system, until instrument fault is repaired.
In conclusion the present invention passes through the Gas Parameters acquired at the electric precipitator flue entrance in real time, flue is calculated
The concentration of coal gas and the gas explosion limit in the flue gas of inlet judge that flue gas with the presence or absence of risk of explosion, is selected according to judging result
It selects and whether needs to be adjusted control to the electric precipitator high voltage power supply, when flue gas is there are when risk of explosion, judge the electricity
Whether the flashover number of the high voltage power supply of deduster high voltage power supply is greater than zero, if it is greater than zero, by reduce high voltage power supply two
Secondary voltage makes the flashover number of power supply high voltage power supply be zero；It is fired during coal gas dust removal so as to avoid electric precipitator
Phenomenon improves the safety of converter electric precipitator system.So the present invention effectively overcomes various shortcoming in the prior art
And has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (8)
1. a kind of explosion prevention controlling process based on converter electric precipitator system, the electric precipitator is for smelting operation, feature
It is, comprising:
Acquire the Gas Parameters at electric precipitator flue entrance；
Obtain the power parameter of the electric precipitator comprising: the secondary voltage and flashover number of high voltage power supply；
Calculated according to the Gas Parameters and judge risk of explosion there are situations；
According to the judgement risk of explosion there are situation, the secondary voltage for reducing the electric precipitator high voltage power supply is chosen whether
With flashover number, wherein when risk of explosion is not present in flue gas at the flue entrance, then keep the power supply electricity of the electric precipitator
Pressure；
At the flue entrance flue gas there are when risk of explosion, judge the high voltage power supply of the electric precipitator flashover number whether
Greater than zero；If the flashover number of the high voltage power supply is greater than zero, reduce the secondary voltage value of the electric precipitator until high pressure
Until the flashover number of power supply is equal to zero；If the flashover number of the high voltage power supply is not more than zero, the electric precipitator is kept
Supply voltage.
2. the explosion prevention controlling process according to claim 1 based on converter electric precipitator system, which is characterized in that the cigarette
Gas parameter includes smoke components and concentration；Calculated according to the Gas Parameters and judge risk of explosion there are situations, comprising:
According to the smoke components and concentration of flue entrance acquisition, the explosion limit of gas concentration and coal gas in flue gas is calculated；
It is compared, is judged at the flue entrance with the explosion limit section calculated according to the gas concentration in flue gas
Flue gas whether there is risk of explosion；
When gas concentration is located in the gas explosion limit range in the flue gas, then determine that the flue gas at flue entrance exists
Risk of explosion；
When gas concentration is located at other than the gas explosion limit range in the flue gas, then determine flue gas at flue entrance not
There are risk of explosion.
3. the explosion prevention controlling process according to claim 1 based on converter electric precipitator system, which is characterized in that acquisition electricity
The concentration of carbon monoxide and oxygen at deduster flue entrance in flue gas, and judge risk of explosion there are situations, comprising:
According to oxygen concentration in flue gas and carbonomonoxide concentration compared with preset threshold, judge that the flue gas at the flue entrance is
It is no that there are risk of explosion；
When the carbonomonoxide concentration is higher than 12% and oxygen concentration is located in 5%~19% range, then determine that flue enters
There are risk of explosion for flue gas at mouthful；
When the carbonomonoxide concentration lower than 12% or oxygen concentration lower than 5% or oxygen concentration be higher than 19% when, then determine cigarette
Risk of explosion is not present in the flue gas of road inlet.
4. the explosion prevention controlling process according to claim 3 based on converter electric precipitator system, which is characterized in that described to sentence
The Gas Parameters broken at the flue entrance are with the presence or absence of before risk of explosion further include:
Obtaining raw material and technological parameter in smelting process, there are the calculating of the auxiliary of situation to be provided as risk of explosion.
5. a kind of explosion-proof control device based on converter electric precipitator system, the electric precipitator is for smelting operation, feature
It is, comprising:
Acquisition module, for acquiring the Gas Parameters at electric precipitator flue entrance；
Power parameter obtains module, for obtaining the power parameter of the electric precipitator comprising: the secondary voltage of high voltage power supply
With flashover number；
Explosion-proof control module, for calculated and judged according to the Gas Parameters risk of explosion there are situations；
Module is adjusted, for, there are situation, choosing whether to reduce the electric precipitator high pressure according to the judgement risk of explosion
The secondary voltage and flashover number of power supply；Wherein, the adjustment module includes:
Holding unit, what it is for the risk of explosion at the flue entrance is that there is no then keep the electricity to remove there are situation
The supply voltage of dirt device；
Flashover number judging unit judges the height of the electric precipitator in the presence of the risk of explosion at the flue entrance
Whether the flashover number of voltage source is greater than zero；
The first adjustment unit reduces the electric precipitation if the flashover number for the secondary voltage high voltage power supply is greater than zero
The secondary voltage value of device is until the flashover number of high voltage power supply is equal to zero；
Second adjustment unit keeps the electric precipitator if the flashover number for the high voltage power supply is not more than zero
Supply voltage.
6. the explosion-proof control device according to claim 5 based on converter electric precipitator system, which is characterized in that the cigarette
Gas parameter includes smoke components and concentration, and the explosion-proof control module includes:
Computing unit, smoke components and concentration for being acquired according to flue entrance, calculate flue entrance flue gas in coal gas it is dense
The explosion limit of degree and coal gas；
Explosion judging unit is sentenced for being compared according to the gas concentration in flue gas with the explosion limit section calculated
The flue gas to break at the flue entrance is with the presence or absence of risk of explosion；
First judging unit is then sentenced for working as the gas concentration in the flue gas not in the gas explosion limit section of calculating
Determine the flue gas at flue entrance and risk of explosion is not present；
Second judging unit, for being calculated in resulting gas explosion limit range when the gas concentration in the flue gas, then
There are risk of explosion for flue gas at judgement flue entrance.
7. the explosion-proof control device according to claim 5 based on converter electric precipitator system, which is characterized in that the cigarette
Gas parameter includes the concentration and carbonomonoxide concentration of oxygen in flue gas, and the explosion-proof control module includes:
Gas concentration judging unit, for compared with preset threshold, being judged according to oxygen concentration in flue gas and carbonomonoxide concentration
Flue gas at the flue entrance whether there is risk of explosion；
Third judging unit, for when the carbonomonoxide concentration is higher than 12% and oxygen concentration is located in 5%~19% range
When, then there are risk of explosion for the flue gas for determining at flue entrance；
4th judging unit, for when the carbonomonoxide concentration is lower than 12% or oxygen concentration is lower than 5% or oxygen concentration is high
When 19%, then determine that risk of explosion is not present in the flue gas at flue entrance.
8. the explosion-proof control device according to claim 5 based on converter electric precipitator system, which is characterized in that described
Before explosion-proof control module further include:
Smelting parameter obtains module, for obtaining raw material and technological parameter in smelting process be provided as risk of explosion there are feelings
The auxiliary of condition calculates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610638278.0A CN106048131B (en) | 2016-08-05 | 2016-08-05 | Explosion prevention controlling process and device based on converter electric precipitator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610638278.0A CN106048131B (en) | 2016-08-05 | 2016-08-05 | Explosion prevention controlling process and device based on converter electric precipitator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106048131A CN106048131A (en) | 2016-10-26 |
| CN106048131B true CN106048131B (en) | 2019-05-03 |
Family
ID=57481741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610638278.0A Active CN106048131B (en) | 2016-08-05 | 2016-08-05 | Explosion prevention controlling process and device based on converter electric precipitator system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106048131B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506942B (en) * | 2017-09-11 | 2020-09-25 | 中冶赛迪工程技术股份有限公司 | Method and system for evaluating explosion risk of mixed wet flue gas |
| CN108048619B (en) * | 2018-01-25 | 2024-02-09 | 阳春新钢铁有限责任公司 | Dry dedusting and waste heat recovery device and method for converter |
| CN108379968B (en) * | 2018-03-12 | 2021-03-19 | 四川德胜集团钒钛有限公司 | Control system and method of bag-type dust collector |
| CN108411061B (en) * | 2018-03-30 | 2023-01-10 | 南京恒瑞环保科技有限公司 | Explosion-proof control system and method applied to converter dust removal device |
| CN112195302B (en) * | 2020-10-16 | 2023-05-12 | 中冶赛迪技术研究中心有限公司 | Method and device for predicting primary flue gas electric dust removal explosion risk of converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201411467Y (en) * | 2009-05-31 | 2010-02-24 | 中冶京诚工程技术有限公司 | Converter gas dry dedusting system and explosion-proof device thereof |
| CN101886155A (en) * | 2010-06-03 | 2010-11-17 | 大连嘉禾工业控制技术有限公司 | Electric precipitation spark control method for coal gas of rotating furnace |
| CN103276139A (en) * | 2013-06-09 | 2013-09-04 | 中国重型机械研究院股份公司 | Nitrogen dilution anti-explosion system in dry-method cooling and purifying recovery system for converter gas |
-
2016
- 2016-08-05 CN CN201610638278.0A patent/CN106048131B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201411467Y (en) * | 2009-05-31 | 2010-02-24 | 中冶京诚工程技术有限公司 | Converter gas dry dedusting system and explosion-proof device thereof |
| CN101886155A (en) * | 2010-06-03 | 2010-11-17 | 大连嘉禾工业控制技术有限公司 | Electric precipitation spark control method for coal gas of rotating furnace |
| CN103276139A (en) * | 2013-06-09 | 2013-09-04 | 中国重型机械研究院股份公司 | Nitrogen dilution anti-explosion system in dry-method cooling and purifying recovery system for converter gas |
Non-Patent Citations (1)
| Title |
|---|
| 氢氧化铝焙烧炉电除尘器的抗爆设计;尹占海 等;《第16届中国电除尘学术会议论文集》;20151030;第314-315页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106048131A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106048131B (en) | Explosion prevention controlling process and device based on converter electric precipitator system | |
| Yang et al. | Comprehensive understanding of SO3 effects on synergies among air pollution control devices in ultra-low emission power plants burning high-sulfur coal | |
| Yao et al. | Effect of wet flue gas desulfurization (WFGD) on fine particle (PM2. 5) emission from coal-fired boilers | |
| Anheden et al. | Overview of operational experience and results from test activities in Vattenfall’s 30 MWth oxyfuel pilot plant in Schwarze Pumpe | |
| Parker | Electrical operation of electrostatic precipitators | |
| Liu et al. | Field measurements on the emission and removal of PM2. 5 from coal-fired power stations: 1. Case study for a 1000 MW ultrasupercritical utility boiler | |
| Chen et al. | Effects of heat treatment and SOC on fire behaviors of lithium-ion batteries pack | |
| Hosseinzadeh et al. | Minimum ignition energy of mixtures of combustible dusts | |
| US8734747B2 (en) | Method and apparatus for treating exhaust gas | |
| Molchanov et al. | Comparison of methods for evaluating particle charges in the electrostatic precipitation of fly-ash from small-scale solid fuel combustion | |
| CN103968415B (en) | Flue gas recirculation Combustion System of Boiler Burning Fine and operating mode changing method thereof | |
| Wu et al. | Evaluation of mercury sorbents in a lab-scale multiphase flow reactor, a pilot-scale slipstream reactor and full-scale power plant | |
| CN205480177U (en) | Continuous recovery unit of portable sulfur hexafluoride tail gas | |
| Gu et al. | A new approach for clustering in desulfurization system based on modified framework for gypsum slurry quality monitoring | |
| CN106111342A (en) | A kind of online fault detect of electric cleaner, correction system | |
| CN105057102A (en) | Comparison test platform of dust removal efficiency of polar plate | |
| Shi et al. | Numerical study of the effect of temperature and H2O concentration on the electrostatic precipitator characteristics at high temperatures | |
| CN205744126U (en) | A kind of continuous electricity generation system of gas | |
| CN204406113U (en) | Transforming plant gas bulk concentration check processing device | |
| Lou et al. | Inhibition performances of lithium-ion battery pack fires by fine water mist in an energy-storage cabin: A simulation study | |
| CN102151465B (en) | Nuclear-energy desulfurization denitration decarburization equipment | |
| CN203750195U (en) | Submerged combustion type evaporation and concentration device | |
| CN216573587U (en) | Oil smoke exhaust-gas treatment purifier | |
| CN206178498U (en) | An electrical control box | |
| Turner et al. | Sizing and costing of electrostatic precipitators: Part I. Sizing considerations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |