CN206424788U - Denitration automatic adjustment circuit device - Google Patents
Denitration automatic adjustment circuit device Download PDFInfo
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Abstract
A kind of denitration automatic adjustment circuit device.When, which there are the other reasonses such as analyzer purging or device systems exception, in denitrating system causes measured value abnormal, pass through lagging device and comparison means, it may determine that measurement variation situation, when measured value keeps constant or varied less, regulating loop is prohibited increasing taboo and subtract, prevent regulating system from over control occur, when system recovers normal, it can recover to continue to automatically adjust, regulating loop is without frequently carrying out hand automatic switchover, it is ensured that the efficiency and quality automatically adjusted.A kind of denitration automatic adjustment circuit device, its composition includes four parts.The utility model is applied to denitration automatic adjustment circuit.
Description
Technical field：
The present invention relates to a kind of denitration automatic adjustment circuit device, judge and prohibit that increasing taboo subtracts loop in measured value, adjust back
Road is without frequently carrying out hand automatic switchover, it is ensured that the efficiency and quality automatically adjusted.
Background technology：
Denitration automatic adjustment circuit is generally realized by DCS, is connected by FBD method.For SCR catalyst reduction
For method denitration technology, denitration automatically adjusts by controlling ammonia to spray adjustable valve to realize the regulation to exiting flue gas NOX,
Denitration efficiency is controlled in the range of design load.As China is to environmental protection pay attention to day by day, it is ensured that neat stress NOX qualified discharges into
For our necessary work.
Denitration automatic adjustment circuit be compared by exiting flue gas NOx measurement and setting value after difference, go control
The aperture of adjustable valve is sprayed in PID regulator, adjuster output by manual operator output control ammonia, surveys exiting flue gas NOX
Value is consistent substantially with setting value.
Be present shortcoming in original denitration automatic adjustment circuit, can not put into always.Shortcoming：Exiting flue gas NOX measured values lead to
Cross CEMS analyzers to measure, analyzer is infrared extraction heated type, and in measurement process, analyzer needs regular purge
（Otherwise the dust in flue gas easily blocks sampling line）, output valve keeps before purging that measured value is constant in purge, and this is right
It is a kind of very big interference for denitration is automatically adjusted, original regulating loop is not put into.
The content of the invention：
It is an object of the invention to provide a kind of denitration automatic adjustment circuit device.
Above-mentioned purpose is realized by following technical scheme：
A kind of denitration automatic adjustment circuit device, its composition includes four parts：Automatically manual logic function loop feature is cut；
Normal regulating functional loop part；Prohibit increasing taboo and subtract functional loop part；Override closes functional loop part.
Described denitration automatic adjustment circuit device, it is characterized in that：Described manual logical circuit part composition of cutting includes：
Comparison means one, two inputs of described comparison means one are filled with regulation door feedback signal and analog quantity switching selection respectively
The output end connection put, its output end is connected with the input of high lower bound device one, the input of described high lower bound device one
It is connected with the output end of comparison means one, its output end is connected with the input of timing closing device, its output end and or logic
One of input connection of device one, described high limit device one is connected with regulated variable signal, its output end and or logic
Device one another input connection, described or logic device one two inputs respectively with timing closing device and height
Limit device one is connected, and its output end is connected with one of input MAN ends of manual operator device, and manual operator device has multiple defeated
Enter end, one of input MAN ends with or the output end of logic device one be connected, the output end of described manual operator device and
The input connection of analog quantity switching selector, one of input N-terminal of described analog quantity switching selector with
The output end connection of manual operator device 14.
Described denitration automatic adjustment circuit device, it is characterized in that：Described normal regulating funtion part includes：Setting value
Device, what described setting value device received operations staff manually sets value signal, and wherein the one of its output end and PID regulator
Individual input S ends connection, lagging device one is connected with regulated variable signal, another input P of its output end and PID regulator
End connection, the two input S ends and P ends of described PID regulator are connected with setting value device and lagging device one respectively, its
Output end is connected with manual operator device, and described manual operator device has multiple inputs, and its Regulate signal input is adjusted with PID
The output end connection of device, the output end of described manual operator device is connected with the input of analog quantity switching selector, described
One of input N-terminal of analog quantity switching selector be connected with the output end of manual operator device.
Described denitration automatic adjustment circuit device, described normal regulating functional loop part includes：Lagging device two,
Described lagging device two is connected with regulated variable signal, and its output end is connected with one of input of comparison means two, institute
Output end of two inputs of the comparison means two stated respectively with regulated variable signal and lagging device two is connected, its output end with
The input connection of high lower bound device two, the input of described high lower bound device two is connected with the output end of comparison means two,
The input that its output end disconnects device with delay is connected, and described delay disconnects the input and high lower bound device two of device
Output end is connected, and its output end is connected with the input of the negated calculation device of logic, the negated calculation device of described logic it is defeated
Enter end and be connected with the output end that delay disconnects device, its output end is connected with one of input with logic device two, institute
The one of output terminals A end and the negated algorithm of logic with logic device two two inputs respectively with manual operator device that be stating
The output end connection of device, its output end is divided into two-way, wherein one of input LWI ends with manual operator device connect all the way
Connect, another road with or one of input of logic device two be connected, the input and regulated variable of described lower bound device one
Signal is connected, and its output end and be connected with one of input of logic device one, the described high input for limiting device two
It is connected, its output end and is connected with another input of logic device one, described and logic device with the escaping of ammonia rate signal
Output end of one two inputs respectively with lower bound device one and high limit device two is connected, its output end and or logic device two
Another input connection, described or logic device two two inputs respectively with logic device two and with logic fill
The output end for putting one is connected, and its output end is connected with one of input RAI ends of manual operator device, described manual operator dress
It is equipped with multiple inputs, one of input LWI ends and is connected with the output end of logic device two, another input RAI
The output end connection of end and/or logic device two, the output end of described manual operator device is defeated with analog quantity switching selector
Enter end connection, one of input N-terminal of described analog quantity switching selector is connected with the output end of manual operator device.
Described denitration automatic adjustment circuit device, described override, which closes functional loop part, to be included：Analog quantity switching choosing
Device is selected, described analog quantity switching selector there are multiple inputs, and one of input selection input reacts with SCR
Device trip signal is connected, another input Y ends and the connection of analog quantity maker.
Beneficial effects of the present invention：
1. regulating loop of the present invention mainly solves CEMS analyzers purging or device systems reason etc. in self-regulating process
Other exceptions cause measured value to keep or varied less in a period of time the interference problem to automatically adjusting, and enable regulating loop
Smoothly input is without frequently carrying out hand automatic switchover.
Control loop of the present invention, causes measured value when other reasons such as analyzer purging or device systems exception occurs in system
When being varied less in constant or a period of time, pass through lagging device and comparison means, it can be determined that go out measurement variation situation, when
When measured value keeps constant or varied less, regulating loop is prohibited increasing taboo and subtract, prevent regulating system from over control occur, work as system
When recovering normal, it can recover to continue to automatically adjust, regulating loop is without frequently carrying out hand automatic switchover, it is ensured that automatically adjust
Efficiency and quality, this regulating loop does not influence normal manually operated.
Brief description of the drawings：
Accompanying drawing 1 is the structural representation of the present invention.
Embodiment：
Embodiment 1：
A kind of denitration automatic adjustment circuit device, its composition includes four parts：Automatically manual logic function loop feature is cut；
Normal regulating functional loop part；Prohibit increasing taboo and subtract functional loop part；Override closes functional loop part.
Embodiment 2：
Denitration automatic adjustment circuit device according to embodiment 1, it is characterized in that：Described cuts manual logical circuit portion
Be grouped into including：Comparison means 1, two inputs of described comparison means 1 respectively with regulation door feedback signal 23 and
The output end connection of analog quantity switching selector 3, and receive to adjust door feedback signal 23 and analog quantity switching selector 3
Output order, comparison means 1 calculates the deviation of the two, and result of calculation is used as output order, its output end and high lower bound device
One 2 input connection；High lower bound device 1, the input of described high lower bound device 1 and the output of comparison means 1
End connection, receives the output order of comparison means 1, and is compared with high-low limits, is then exported more than limit value and puts 1, its output end
It is connected with the input of timing closing device 4；Timing closing device 4, the input of described timing closing device 4 receives height
Limit device 1 output order, when input be 1 when, be delayed 1 second, output put 1, its output end with or logic device 1 wherein
One input connection；, high to limit device 1, described high limit device 1 is connected with regulated variable signal 24, receives regulated variable letter
Number, and compared with ceiling value, then exported more than limit value and put 1, its output end with or another input of logic device 1 connect
Connect；Or logic device 1, described or logic device 1 two inputs respectively with timing closing device 4 and high limit device
One 6 connections, and receive the output order of the two, when it is 1 that two inputs, which have one, or the output of logic device 1 puts 1,
Its output end is connected with one of input MAN ends of manual operator device 14.Manual operator device 14 has multiple inputs, wherein
One input MAN end with or the output end of logic device 1 be connected, receive or logic device 1 output order, work as input
Hold for 1 when（Represent that the instruction of regulation door and feedback deviation be big or regulated variable signal is beyond automatically adjusting scope）, manual operator switching
To manual mode, now manual operator receives the manually operated instruction of operations staff, and is used as the instruction of manual operator itself output end
Output, and the tracking manual operator output order of PID regulator 13, output end and the analog quantity switching selector of manual operator device 14
3 input connection；One of input N-terminal of analog quantity switching selector 3 connects with the output end of manual operator device 14
Connect, receive manual operator output order under normal circumstances, and export regulation door command signal 26.
Embodiment 3：
Denitration automatic adjustment circuit device according to embodiment 1 or 2, described normal regulating funtion part includes：
Setting value device 19, what described setting value device 19 received operations staff manually sets value signal, and its output end is adjusted with PID
One of input S ends connection of device 13；Lagging device 1, described lagging device 1 is connected with regulated variable signal 24,
Receive regulated variable signal, and delayed processing is done to signal, its output end is connected with another input P ends of PID regulator 13；
PID regulator 13, the two input S ends and P ends of described PID regulator 13 respectively with setting value device 19 and lagging device
One 7 connections, and receive the output end instruction of setting value device 19 and lagging device 1, according to the deviation of the two by corresponding
Output control is instructed after PID arithmetic, and its output end is connected with manual operator device 14；Manual operator device 14, described manual operator dress
Putting 14 has multiple inputs, and its Regulate signal input is connected with the output end of PID regulator 13, under automatic mode, manual operator
Receive the output order of adjuster, and exported as the instruction of manual operator itself output end, the output end of manual operator device 14 with
The input connection of analog quantity switching selector 3；Analog quantity switching selector 3, described analog quantity switching selector 3
One of input N-terminal be connected with the output end of manual operator device 14, receive manual operator output order under normal circumstances, and
Output regulation door command signal 26.
Embodiment 4：
Denitration automatic adjustment circuit device according to embodiment 1 or 2 or 3, described normal regulating functional loop portion
Dividing includes：Lagging device 29, described lagging device 29 is connected with regulated variable signal 24, receives regulated variable signal, and to letter
The delayed processing of 5 seconds number is done, its output end is connected with one of input of comparison means 2 10；Comparison means 2 10, institute
Output end of two inputs of the comparison means 2 10 stated respectively with regulated variable signal 24 and lagging device 29 is connected, and is connect
By regulated variable signal 24 and the output order of lagging device 29, comparison means 2 10 calculates the deviation of the two, and result of calculation can be with
Reflect variable quantity of the regulated variable before and after 5 seconds, its output end is connected with the input of high lower bound device 2 11；High lower bound device two
11, the input of described high lower bound device 2 11 is connected with the output end of comparison means 2 10, receives comparison means 2 10
Output order, and compared with high-low limits ± 0.08, then exported more than limit value and put 1, be otherwise 0, its output end disconnects with delay
The input connection of device 12；Delay disconnects device 12, and described delay disconnects the input and high lower bound device two of device 12
11 output end connection, when input is 0, is delayed 5 seconds, output is set to 0, its output end and the input of the negated calculation device 17 of logic
End connection；The negated calculation device 17 of logic, input and the delay of the negated calculation device 17 of described logic disconnect device 12
Output end is connected, when input is 0（Regulated variable change is represented no more than ± 0.08 and continues 5 seconds）, export and put 1, its output end
It is connected with one of input with logic device 2 16；With logic device 2 16, it is described with logic device 2 16 two
The one of output terminals A end of individual input respectively with manual operator device 14（Its value represents manual operator for 1 and is in automatic mode）
Connect, when two inputs are 1, represent under automatic mode, regulated variable becomes with the output end of the negated calculation device of logic 17
Change no more than ± 0.08 and continuing 5 seconds, now device output switch amount instruction puts 1, and its output end is divided into two-way, wherein all the way with
One of input LWI ends of manual operator device 14（Taboo subtracts）Connection, another road with or logic device 2 15 one of them
Input is connected；Lower bound device 1, the input of described lower bound device 1 is connected with regulated variable signal 24, receives regulated variable
Signal, and being compared with lower limit value, then exports less than lower limit value and puts 1, its output end and defeated with one of them of logic device 1
Enter end connection；High limit device 2 22, the input of described high limit device 2 22 is connected with the escaping of ammonia rate signal 25, is received ammonia and is escaped
Ease rate signal, and compared with ceiling value, then exported more than ceiling value and put 1, its output end and another with logic device 1
Input is connected；With logic device 1, two inputs with logic device 1 respectively with lower bound device 1 and
The output end connection of high limit device 2 22, when two inputs are 1, output puts 1, its output end and or logic device 2 15
Another input connection；Or logic device 2 15, described or logic device 2 15 two inputs respectively with patrolling
Collect device 2 16 and be connected with the output end of logic device 1, when it is 1 that two inputs, which have one, represent automatic mode
Under, regulated variable change is no more than ± 0.08 and continues 5 seconds, or the escaping of ammonia rate transfinites, and now device output switch amount instruction puts 1,
Its output end and one of input RAI ends of manual operator device 14（Prohibit and increase）Connection.Manual operator device 14 has multiple inputs
End, one of input LWI ends and is connected, another input RAI ends and/or logic with the output end of logic device 2 16
The output end connection of device 2 15, when LWI ends are 1（Represent regulated variable signal intensity very little or be basically unchanged）, manual operator cuts
Taboo size reduction mode is changed to, manual operator output order, which can only increase, to be reduced；When RAI ends are 1（Represent regulated variable signal intensity very
Small or peace escapement ratio exceedes alarm limits）, manual operator, which is switched to, prohibits increasing pattern, and manual operator output order, which can only reduce, to be increased
Plus, if LWI ends and RAI ends are simultaneously 1, manual operator output is maintained at currency, the output end and mould of manual operator device 14
The input connection of analog quantity switching selector 3；The one of input N-terminal and manual operator of analog quantity switching selector 3
The output end connection of device 14, receives manual operator output order, and export regulation door command signal 26 under normal circumstances.
Embodiment 5：
Denitration automatic adjustment circuit device according to embodiment 1 or 2 or 3 or 4, described override closes functional loop portion
Dividing includes：Analog quantity switching selector 3, described analog quantity switching selector 3 has multiple inputs, one of input
End selection input is connected with SCR reactors trip signal 20, and another input Y ends and analog quantity maker 21 are connected, when
It is 1 to select input（Represent the tripping operation of SCR reactors）When, the simulation numerical quantity that analog quantity switching selector 3 receives Y ends is defeated
Enter, and export regulation door command signal 26.Numerical parameter in analog quantity maker can change, and initial parameter value is 0.Herein
In loop, when reactor trips, regulation door is closed, and otherwise receives manual operator instruction.
Embodiment 6：
Denitration automatic adjustment circuit device according to embodiment 1 or 2 or 3 or 4 or 5, whole loop receives on the spot
Analog input signal has three, respectively adjusts door feedback signal 23, regulated variable signal 24 and the escaping of ammonia rate signal 25, on the spot
On-off signal signal has one：SCR reactors trip signal 20, coincidence circuit can also receive the manually operated finger of operations staff
Order and automatic mode setting value setting signal, loop output regulation door command signal 26 to equipment on the spot.Described comparison means
One 1 receive regulation door feedback signals 23, described high limit device 1, described lagging device 1, described lower bound device 8,
Described comparison means 2 10 and described lagging device 29 receive regulated variable signal 24, described high limit module 2 22 respectively
The escaping of ammonia rate signal 25 is received, described analog quantity switching selector 3 sends regulation door command signal.
Embodiment 7：
Comparison means 1:Device has two inputs, receives analog input signal, and device calculates the deviation of the two, meter
Result is calculated to instruct as analog output；
High lower bound device 1：Device can receive analog input signal, and be compared with high-low limits, when input and limit value
Deviation is more than 5, and the instruction of output switch amount puts 1.
Analog quantity switching selector 3：There are three inputs, N-terminal, Y ends and selection input FLAG ends, N-terminal and Y terminations
By analog input signal, FLAG terminations are by On-off signal signal, device output analog signalses instruction, when FLAG ends are 1
When, switching selector selects Y ends as output order, otherwise selects N-terminal to be used as output order.
Timing closing device 4：Device can receive On-off signal signal, when input is 1, be delayed 1 second, output switch amount
Instruction puts 1.
Or logic device 1：Device has two inputs, receives On-off signal signal, and device calculates the deviation of the two,
Result of calculation is instructed as analog output, and when it is 1 that two inputs, which have one, the instruction of output switch amount puts 1.
High limit device 1：Device can receive analog input signal, and be compared with ceiling value, when input exceedes ceiling value
When, the instruction of output switch amount puts 1.
Lagging device 1：, device receives analog input signal, and delayed processing is done to signal, and lag time is 2 seconds.
Lower bound device 1：Device can receive analog input signal, and be compared with lower limit value, when input is less than lower limit value
When, the instruction of output switch amount puts 1.
Lagging device 29：Device receives analog input signal, and delayed processing, 5 seconds lag time are done to signal.
Comparison means 2 10：Device has two inputs, receives analog input signal, and device calculates the deviation of the two,
Result of calculation is instructed as analog output.Device 10 is used cooperatively with device 9, can compare change of the regulated variable before and after 5 seconds.
High lower bound device 2 11：Device can receive analog input signal, and compared with high-low limits ± 0.08, exceed
Limit value, which is then exported, puts 1, is otherwise 0.
Delay disconnects device 12：Device receives On-off signal signal, and output switch amount is instructed.When input is 0, prolong
When 5 seconds, output is set to 0.Device 9, device 10, device 11 are used cooperatively with device 12, can compare change of the regulated variable before and after 5 seconds
Change, ± 0.08 be no more than when regulated variable changes,.
Adjuster 13：Device has two analog input ends, respectively setting value input S ends and regulated variable input P
End, device exports Analog control instruction according to the deviation of the two after corresponding PID arithmetic.
Manual operator device 14：Device has multiple inputs, wherein three on-off model inputs：MAN ends, LWI ends,
RAI ends, an analog signalses input：Regulate signal input.Under automatic mode, manual operator receives to come from analog signalses
The adjuster output order of input, and exported as the instruction of manual operator itself output end；When MAN ends are 1（In this loop
It is middle to represent that the instruction of regulation door and feedback deviation be big or regulated variable signal is beyond automatically adjusting scope）, manual operator is switched to manually
Pattern, now manual operator receives the manually operated instruction of operations staff, and is exported as the instruction of manual operator itself output end, and
PID regulator 13 tracks manual operator output order；When LWI ends are 1（In this loop represent regulated variable signal intensity very little or
It is basically unchanged）, manual operator is switched to taboo size reduction mode, and manual operator output order, which can only increase, to be reduced；When RAI ends are 1（
Represent that regulated variable signal intensity very little or peace escapement ratio exceed alarm limits in this loop）, manual operator, which is switched to, prohibits increasing pattern, hand
Behaviour's device output order can only reduce and can not increase；If LWI ends and RAI ends are simultaneously 1, manual operator output is maintained at current
Value.
Or logic device 2 15：Device has two On-off signal ends, and when it is 1 that two inputs, which have one, output is put
1.In this loop, under automatic mode, regulated variable change is no more than ± 0.08 and continuing 5 seconds, or the escaping of ammonia rate is when transfiniting, output
Put 1.
With logic device 2 16：Device has two On-off signal ends, when two inputs are 1, output switch amount
Instruction puts 1.In this loop, under automatic mode, regulated variable change is no more than ± 0.08 and continues 5 seconds, then output puts 1.
The negated calculation device 17 of logic：Device has an On-off signal end, when input is 0, the instruction of output switch amount
Put 1.In this loop, when regulated variable change is no more than ± 0.08 and continues 5 seconds, output puts 1.
With logic device 1：Device has two On-off signal ends, when two inputs are 1, output switch amount
Instruction puts 1.In this loop, when regulated variable is normal and the escaping of ammonia rate transfinites, output puts 1.
Setting value device 19：Device can receive the analog quantity setting value setting signal of operations staff, and export analog quantity
Instruct adjuster.
Analog quantity maker 21：There is initial analog quantity parameter setting inside device, parameter value can change, device output
Analog quantity numerical signal.
High limit device 2 22：Device has an On-off signal end, and when input exceedes ceiling value, the instruction of output switch amount is put
1。
Claims (1)
1. a kind of denitration automatic adjustment circuit device, its composition includes four parts：Automatically manual logic function loop feature is cut；Just
Normal regulatory function loop feature；Prohibit increasing taboo and subtract functional loop part；Override closes functional loop part；
Described manual logical circuit part composition of cutting includes：Comparison means one, two inputs of described comparison means one
The output end with regulation door feedback signal and analog quantity switching selector is connected respectively, its output end and high lower bound device one
Input is connected, and the input of described high lower bound device one is connected with the output end of comparison means one, its output end and delay
The input connection of closing device, its output end with or one of input of logic device one be connected, it is high limit device one and
Regulated variable signal is connected, its output end with or another input of logic device one be connected, it is described or logic device one
Two inputs are connected with timing closing device and high limit device one respectively, and one of them of its output end and manual operator device are defeated
Enter to hold MAN ends to connect, manual operator device has multiple inputs, one of input MAN ends with or logic device one output
End connection, the output end of described manual operator device is connected with the input of analog quantity switching selector, described analog quantity
One of input N-terminal of switching selector is connected with the output end of manual operator device；
Described normal regulating funtion part includes：Setting value device, described setting value device receives the manual of operations staff
One of input S ends connection of duty setting signal, its output end and PID regulator, lagging device one and regulated variable signal
Connection, another input P ends of its output end and PID regulator are connected, two input S ends of described PID regulator
It is connected respectively with setting value device and lagging device one with P ends, its output end is connected with manual operator device, described manual operator dress
Multiple inputs are equipped with, the connection of the output end of its Regulate signal input and PID regulator, the output of described manual operator device
End is connected with the input of analog quantity switching selector, one of input N of described analog quantity switching selector
End is connected with the output end of manual operator device；
Described normal regulating functional loop part includes：Lagging device two, described lagging device two connects with regulated variable signal
Connect, its output end is connected with one of input of comparison means two, two inputs of described comparison means two are distinguished
It is connected with the output end of regulated variable signal and lagging device two, its output end is connected with the input of high lower bound device two, described
The input of high lower bound device two be connected with the output end of comparison means two, its output end disconnects the input of device with delay
Connection, the input that described delay disconnects device is connected with the output end of high lower bound device two, and its output end and logic are negated
The input connection of calculation device, input and the delay of the negated calculation device of described logic disconnect the output end company of device
Connect, its output end is connected with one of input with logic device two, two inputs with logic device two
It is connected respectively with one of output terminals A end of manual operator device and the output end of the negated calculation device of logic, its output end point
Into two-way, wherein be connected all the way with one of input LWI ends of manual operator device, another road with or logic device two its
In the connection of input, the input of described lower bound device one is connected with regulated variable signal, its output end and with logic dress
Put one the connection of one of input, the input of high limit device two is connected with the escaping of ammonia rate signal, its output end and with patrolling
Another input connection of volume device one, two inputs with logic device one respectively with lower bound device one and height
Limit the output end connection of device two, its output end with or another input of logic device two be connected, described or logic is filled
Two inputs for putting two are connected with logic device two and with the output end of logic device one respectively, its output end and manual operator
One of input RAI ends connection of device, described manual operator device has multiple inputs, one of input LWI
Hold and be connected with the output end of logic device two, the output end connection of another input RAI ends and/or logic device two is described
The output end of manual operator device be connected with the input of analog quantity switching selector, described analog quantity switching selector
One of input N-terminal be connected with the output end of manual operator device；
Described override, which closes functional loop part, to be included：Analog quantity switching selector, described analog quantity switching selector
There are multiple inputs, one of input selection input is connected with SCR reactor trip signals, another input Y ends
With the connection of analog quantity maker.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436984.9U CN206424788U (en) | 2016-12-26 | 2016-12-26 | Denitration automatic adjustment circuit device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621436984.9U CN206424788U (en) | 2016-12-26 | 2016-12-26 | Denitration automatic adjustment circuit device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512723A (en) * | 2016-12-26 | 2017-03-22 | 大唐黑龙江发电有限公司哈尔滨第热电厂 | Denitration automatic regulating loop device |
| CN109107360A (en) * | 2018-11-01 | 2019-01-01 | 国家能源投资集团有限责任公司 | Spray ammonia control method and device based on denitrating system |
-
2016
- 2016-12-26 CN CN201621436984.9U patent/CN206424788U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512723A (en) * | 2016-12-26 | 2017-03-22 | 大唐黑龙江发电有限公司哈尔滨第热电厂 | Denitration automatic regulating loop device |
| CN106512723B (en) * | 2016-12-26 | 2023-09-19 | 大唐黑龙江发电有限公司哈尔滨第一热电厂 | Denitration automatic regulating loop device |
| CN109107360A (en) * | 2018-11-01 | 2019-01-01 | 国家能源投资集团有限责任公司 | Spray ammonia control method and device based on denitrating system |
| CN109107360B (en) * | 2018-11-01 | 2021-09-21 | 国家能源投资集团有限责任公司 | Ammonia injection control method and device based on denitration system |
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