CN108105794A - A kind of SCR denitration system inlet flue gas temperature adaptive regulation method - Google Patents
A kind of SCR denitration system inlet flue gas temperature adaptive regulation method Download PDFInfo
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- CN108105794A CN108105794A CN201711238282.9A CN201711238282A CN108105794A CN 108105794 A CN108105794 A CN 108105794A CN 201711238282 A CN201711238282 A CN 201711238282A CN 108105794 A CN108105794 A CN 108105794A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chimneys And Flues (AREA)
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Abstract
The invention discloses a kind of SCR denitration system inlet flue gas temperature adaptive regulation methods, include the following steps：Temperature-measuring heat couple is set in the smoke inlet pipe of SCR flue gas denitrification systems first, the smoke temperature measured is analyzed and processed by temperature integrated control system；Secondly gas burning system is installed in the arrival end of SCR flue gas denitrification systems, and cooperation adjusting is carried out to gas flow and air mass flow according to the fuel gases calorific value of gas burning system so that combustion gas and air proportionally enter gas burning system；Then the flue gas mixer mating with it is installed in the port of export of gas burning system, high-temperature flue gas is sprayed by the burning of combustion gas auxiliary combustion chamber to mix with the low-temperature flue gas in flue, and the temperature into the gas approach of SCR flue gas denitrification systems is made to maintain more than set temperature value；This method has the function of automatic adjusument, when making large-scale thermal power machine group flexibility peak regulation, meets minimum discharge environmental protection standard, avoids the reliability under super row's period, harsh conditions, system complex, invests the defects of big.
Description
Technical field
The present invention relates to industrial tail gas processing technology fields, are specially that a kind of SCR denitration system inlet flue gas temperature is adaptively adjusted
Section method.
Background technology
Rich coal resources in China, and petroleum resources is deficient, determines that coal is the main primary energy in China.Coal utilization
More than 80% is directly used in burning, and a large amount of CO can be generated in coal combustion process2, dust and SO2With the nuisances such as NOx, formed
Atmosphere pollution；Simultaneously because coal is difficult to the after-flame that catches fire, operation is consumed with great amount of fuel oil (gas).
SCR flue gas denitrification systems, the extensive use on coal-fired power station boiler due to its denitration rate height, SCR denitrating flue gas are urged
Agent is divided to two kinds of high temperature and low temperature, and in China, low temperature catalyst is still immature, substantially based on high temperature catalyst.By macroeconomic
Situation influences, and network load is low and state compulsion requirement is as far as possible with the policy guidance of generation of electricity by new energy, thermal power generation unit quilt
Compel more performance peak regulating functions, so coal-fired thermal power generation unit usually needs underrun, and boiler controller system load is less than
After 50% rated load, SCR equipment for denitrifying flue gas inlet flue gas temperature can be less than the minimum temperature of its requirement, make its denitration efficiency significantly
It reduces, and the NOx emission concentration of minimum discharge standard restriction can not be met；In boiler cold-state igniting start-up course, SCR flue gases
Denitrification apparatus inlet flue gas temperature can also be significantly less than the minimum temperature of its requirement, and it is set grid-connection that standard, which tackles the operating mode method, at present
It is preceding not examine.Flexibility peak regulation, minimum discharge are the new problems that fire coal thermal power generation corporations of China face.
Start, under underrun operating mode in igniting, how to improve SCR inlet smoke temperature, be to ensure that minimum discharge must solve
Certainly the problem of, improving smoke temperature, there are many methods：
1) steam heat-exchanging technology heats flue gas by heat exchanger using attached vapour System steam, has the drawback that：Unit is high
Heat exchanger spare wear problem during load operation；Unit is all stopped transport, wherein during a certain unit starting operation, attached vapour system does not have
There is steam, there are super row's periods；
2) bypass flue heating technique draws in the bypass of high-temperature flue gas section and takes high-temperature flue gas heating technique.Igniting initial start stage,
Overall smoke temperature is all low, so there is super row's period；During normal operation, shutoff door need to close isolation flue gas, and there are during standby function
High temperature reliability problem and wear problem when putting into operation；
3) the high-temperature flue gas Hybrid Heating technology that burning generates, fuel use explosive fuel such as light diesel fuel, natural gas or coke
Producer gas etc..Fuel oil has that incomplete combustion pollutes catalyst, so fuel gas are preferable heating fuel.
According to above possible Technology Ways, first two has engineer application, and there are some limitations.The third technology
There has been no other units successful application reports at present in path.The present invention program is exactly in the place for having source of the gas, using gas heating
Technology Ways, be that a kind of achievable full load section meets minimum discharge standard, independent peripheral system, original do not gone to and change
The advantages that making, not had an impact to original system design performance.
Fuel gas combustion equipment technology is ripe, and resident, commercial Application are extensive, these occasions be substantially combustion gas quality,
It is applied under supply parameter stability state, that is, has certain applicable elements.China's primary energy is based on coal, petroleum gas money
Source is deficient, though there is country's transfering natural gas from the west to the east pipe network building or be completed, total covering surface is limited, a large amount of using also by shadows such as prices
It rings.
The domestic main big province of producing coal, has an a considerable amount of coal chemical industry enterprises, in coal chemical enterprise production process, exportable coke
Producer gas, hydrogen and the various periodic off-gases with technique change, component calorific value very different, the burning of generally use diffusing tower are put
It dissipates, investment is big and forms thermal pollution；Some mating combustion gas private stations of construction are used, since combustion gas quality is unstable, gas
Measure it is unstable, under current environmental protection policy standard, must mating desulphurization and denitration facility, have the sensation to lose more than gain.
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of SCR denitration system inlet flue gas temperature and adaptively adjusts
Section method, has the function of automatic adjusument, when making large-scale thermal power machine group flexibility peak regulation, meets minimum discharge environmental protection mark
Standard, and extremely economic technical solution, avoid surpass existing for other heating techniques row's period, the reliability under harsh conditions,
The defects of system complex, big investment, it can effectively solve the problem that the problem of background technology proposes.
The technical solution adopted by the present invention to solve the technical problems is：A kind of SCR denitration system inlet flue gas temperature is adaptive
Adjusting method includes the following steps：
S100, temperature-measuring heat couple is set in the smoke inlet pipe of SCR flue gas denitrification systems, the smoke temperature that temperature-measuring heat couple is measured is led to
Excess temperature integrated control system analyzes and processes, and smoke temperature Adaptable System is controlled to run；
S200, gas burning system is installed in the arrival ends of SCR flue gas denitrification systems, and according to the fuel gases calorific value of gas burning system
Cooperation adjusting is carried out to gas flow and air mass flow so that combustion gas and air proportionally enter gas burning system；
S300, the flue gas mixer mating with it is installed in the port of export of gas burning system, proportionally into the combustion
The mixed gas of gas system sprays high-temperature flue gas by the burning of combustion gas auxiliary combustion chamber and enters flue gas mixer, this is by mixer
It is mixed in the low-temperature flue gas that the high-temperature flue gas that system generates uniformly is sprayed into flue, makes the entrance cigarette into SCR flue gas denitrification systems
The flue-gas temperature in road maintains more than set temperature value.
As a kind of preferred technical solution of the present invention, SCR denitration system equipment flue mounted externally or from
In body low temperature flue, in the step S300, external equipment flue or itself low temperature flue are boiler flue.
As a kind of preferred technical solution of the present invention, the step S100 is further included：
When the smoke temperature of temperature-measuring heat couple measurement is less than 320 DEG C, SCR flue gas denitrification systems enter the preparation that puts into operation；
When the smoke temperature of temperature-measuring heat couple measurement is less than 280 DEG C, SCR flue gas denitrification systems start to put into operation.
As a kind of preferred technical solution of the present invention, the set temperature value in the step S300 is 280 DEG C.
As a kind of preferred technical solution of the present invention, the gas burning system includes combustion chamber and is carried respectively to combustion chamber
For combustion gas and the gas supply system and air supply system of air, the arrival end and the port of export of the combustion chamber be mounted on be in
The voltage regulation of voltage regulation service of helical annular distribution, is connected with flue gas mixer, the flue gas is mixed in the port of export of gas burning system
The port of export of clutch is connected with SCR smoke inlet pipes, and installation has several groups along flue cross section screen cloth in SCR smoke inlet pipes
The smoke temperature information of measurement is transmitted to temperature integrated control system, the temperature integrated control by temperature-measuring heat couple, the temperature-measuring heat couple
The signal output part of system is electrically connected respectively with gas supply system and air supply system.
As a kind of preferred technical solution of the present invention, the gas supply system includes fuel gas supply pipeline, and in institute
Gas supply pipeline is stated equipped with flow control valve, the flow control valve inside is equipped with real-time flow meter.
As a kind of preferred technical solution of the present invention, the air supply system includes air feed conduit, in air
The arrival end of service is installed with air quantity damper, and the inside of the air quantity damper is also installed in real time
Flowmeter.
It is supplied as a kind of preferred technical solution of the present invention, and in two voltage regulation of voltage regulation that are equipped with positioned at combustor exit end
To pipeline, wherein a voltage regulation of voltage regulation service is connected with boiler flue, in addition a voltage regulation of voltage regulation service then connects
There is high-temperature flue gas pipe, the inner wall for the high-temperature flue gas pipe being connected with voltage regulation of voltage regulation service is installed with refractory ceramics
Piece, the voltage regulation of voltage regulation service is connected to fuel gas supply pipeline and air feed conduit, and is supplied in voltage regulation of voltage regulation
Deflector is installed with inside pipeline.
As a kind of preferred technical solution of the present invention, the junction of the voltage regulation of voltage regulation service and high-temperature flue gas pipe
Combustion gas auxiliary burner is installed with, the combustion gas auxiliary combustion chamber connects by mixing the arrival end of gas-guide tube and combustion chamber
It connects.
As a kind of preferred technical solution of the present invention, the temperature integrated control system is also associated with fuel gas supply pipeline
With the real-time flow meter inside air feed conduit, the temperature integrated control system is also electrically connected with flow control valve and air quantity
Damper, the temperature integrated control system receive smoke temperature information and flow information, and through excess temperature and flow analysis,
The burning thermal power of combustion chamber is adjusted changing the flow of flow control valve and air quantity damper by driving circuit.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention, can be certainly by setting detection and feedback device
The temperature of main regulation tail gas can adjust the flow of gas flow and air according to actual situation, make different calorific value fuel gas
The combustion needs when thermal power that burning generates meets SCR inlet smoke temperature more than setting value, keep the activity of catalyst, carry significantly
The treatment effeciency of high exhaust gas reduces the concentration of pernicious gas, but also can overcome and keep flame holding under high negative pressure environment
Problem, it is difficult to solve that coalification different kinds of process flow periodic off-gases calorific value difference is big, a variety of quality gas burning systems adjust Adaptive Technologies
Topic, under the conditions of solving wide flue, heating unit generates high-temperature flue gas and boiler flue low-temperature flue gas mixing uniformity technical barrier,
Greatly save investment cost.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the system structure diagram of the present invention；
Fig. 3 is the flow diagram of the present invention；
In figure：1- gas burning systems；2- temperature integrated control systems；3- gas supply systems；4- air supply systems；5- cigarettes
Gas mixer；6-SCR smoke inlet pipes；
101- combustion chambers；102- voltage regulation of voltage regulation services；103- deflectors；
301- fuel gas supply pipelines；302- flow control valves；303- real-time flow meters；304- boiler flues；305- high temperature
Fume pipe；306- refractory ceramics pieces；307- combustion gas auxiliary combustion chambers；308- mixing gas-guide tubes；
401- air feed conduits；402- air quantity dampers；
601- temperature-measuring heat couples.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
As shown in figure 3, the present invention provides a kind of SCR denitration system inlet flue gas temperature adaptive regulation method, including as follows
Step：
Step S100, temperature-measuring heat couple, the cigarette that temperature-measuring heat couple is measured are set in the smoke inlet pipe of SCR flue gas denitrification systems
Temperature is analyzed and processed by temperature integrated control system, and smoke temperature Adaptable System is controlled to run；
When the smoke temperature of temperature-measuring heat couple measurement is less than 320 DEG C, SCR flue gas denitrification systems enter the preparation that puts into operation；
When the smoke temperature of temperature-measuring heat couple measurement is less than 300 DEG C, SCR flue gas denitrification systems start to put into operation；
Step S200, gas burning system is installed in the arrival end of SCR flue gas denitrification systems, and according to the combustion gas of gas burning system
Calorific value carries out cooperation adjusting to gas flow and air mass flow so that combustion gas and air proportionally enter gas burning system；
Step S300, the flue gas mixer mating with it is installed in the port of export of gas burning system, proportionally into combustion
The flue gas generated after the mixed gas burning of gas system enters flue gas mixer, and passes through the burning of combustion gas auxiliary combustion chamber and spray height
Warm flue gas is mixed with the low-temperature flue gas in flue, and the temperature into the gas approach of SCR flue gas denitrification systems is made to maintain setting
More than temperature value, set temperature value is 280 DEG C.
In present embodiment, smoke temperature Adaptable System is to be arranged in the smoke inlet pipe of SCR flue gas denitrification systems, comprising
Temperature-measuring heat couple, the component for fixing temperature-measuring heat couple and the electronic device that temperature-measuring heat couple connects with temperature integrated control system.
On SCR denitration system equipment flue mounted externally or itself low temperature flue, in step S300, external equipment
Flue or itself low temperature flue are boiler flue.
In the present invention, can be drawn according to the information such as flue-gas temperature, oxygen content, load in temperature integrated control system
Temperature rise value is needed, provides gas flow instruction further according to temperature rise value, system instructs adjustment of combustion gas flow according to gas flow, can
It is instructed according to control system and adjusts air mass flow, meet the needs of combustion gas after-flame.
Temperature-measuring heat couple is arranged in SCR inlet flue, and the smoke temperature signal measured simultaneously is sent to control system, when smoke temperature is less than
At 320 DEG C, system is into putting into operation preparation, according to gas supply system fuel gases calorific value, adjustment of combustion gas flow, combustion air flow,
Ensure the needs of fuel gas high efficiency after-flame.Wherein proportionally into burner combustion gas burn in the combustion chamber generate high-temperature flue gas
Into flue gas mixer, the high-temperature flue gas sprayed from flue gas mixer is mixed with the low-temperature flue gas in boiler flue, ensures flue gas
More than 280 DEG C of design temperatures are being maintained always into smoke temperature before SCR reactor inlets, the temperature for keeping the activity of catalyst required
Spend scope.
Based on the above method, the present invention provides a kind of SCR denitration system inlet flue gas temperature adaptive regulation methods of realizing
Related device, concrete structure are as follows：
As depicted in figs. 1 and 2, including gas burning system 1 and temperature integrated control system 2, the arrival end point of gas burning system 1
Gas supply system 3 and air supply system 4 are not connected with, and flue gas mixer 5, cigarette are connected in the port of export of gas burning system 1
The port of export of gas mixer 5 is connected with SCR smoke inlets pipe 6, and if inner section screen cloth is equipped in SCR smoke inlets pipe 6
The smoke temperature information of measurement is transmitted to temperature integrated control system 2 by dry group temperature-measuring heat couple 601, temperature-measuring heat couple 601, and temperature integrates
The signal output part of control system 2 is electrically connected respectively with gas supply system 3 and air supply system 4.
Gas burning system 1 includes combustion chamber 101 and provides the gas supply system of combustion gas and air to combustion chamber 101 respectively
3 and air supply system 4, the voltage regulation of voltage regulation that the arrival end and the port of export of combustion chamber 101 are mounted on helically annular spread supplies
To pipeline 102, the effect of installation voltage regulation of voltage regulation service 102 the negative pressure in flue is solved effect, normal
Under burning condition, due to the effect of discharge flue gas and Fluid pressure in flue so that internal negative pressure is left for -1500Pa
The right side, in this environment, since the swabbing action of strong negative pressure is easy to influence the normal combustion inside combustion chamber 101 so that combustion
It burns and is unable to maintain that stable state of catching fire inside room 101, and by the adjusting pressure stabilization function of voltage regulation of voltage regulation service 102, subtract
The influence of few flue negative pressure.
Gas supply system 3 includes fuel gas supply pipeline 301, and flow control valve is equipped on gas supply pipeline 301
302, the throughput of combustion gas is adjusted by flow control valve 302,302 inside of flow control valve is equipped with real-time flow meter 303, uses
In the real-time traffic of monitoring combustion gas.
Air supply system 4 includes air feed conduit 401, is installed in the arrival end of air feed conduit 401
Air quantity damper 402, the air capacity being adjusted by air quantity damper 402, the inside of air quantity damper 402
Real-time flow meter 303 is installed with, for detecting the real-time traffic of air entrance.
Two voltage regulation of voltage regulation services 102 are being equipped with positioned at 301 port of export of combustion chamber, wherein a voltage regulation of voltage regulation supplies
Boiler flue 304 is connected with to pipeline 102, boiler flue 304 is room temperature exhaust emissions, in addition a voltage regulation of voltage regulation service
102 are connected with high-temperature flue gas pipe 305, and the inner wall for the high-temperature flue gas pipe 305 being connected with voltage regulation of voltage regulation service 102 is solid
Dingan County is equipped with refractory ceramics piece 306, prevents high-temperature tail gas from generating injury to pipeline, and voltage regulation of voltage regulation service 102 connects respectively
Fuel gas supply pipeline 301 and air feed conduit 401 are connected to, and is installed with inside voltage regulation of voltage regulation service 102
Deflector 103, gas burning system 1 uses the steady flame technology of high-drag stable burning cavity under high negative pressure environment, solves the point under high negative pressure environment
Fire and stability problems, the low-NO_x combustion technology combined using multichannel combustion gas classification, air classification, it is ensured that fuel gas buring
Low nitrogen performance, and using spiral flow-guiding structure, problem of adaptive regulation during combustion gas quality wide variation can be solved.
The junction of voltage regulation of voltage regulation service 102 and high-temperature flue gas pipe 305 is installed with combustion gas auxiliary burner
307, by the auxiliary combustion of combustion gas auxiliary burner 307, further improve actual ignition temperature, combustion gas auxiliary combustion chamber
307 are connected by mixing gas-guide tube 308 with the arrival end of combustion chamber 101.
Temperature integrated control system 2 is also associated with the real-time streams inside fuel gas supply pipeline 301 and air feed conduit 401
Gauge 303, temperature integrated control system 2 are also electrically connected with flow control valve 302 and air quantity damper 402, and temperature integrates control
System 2 processed receives smoke temperature information and flow information, and through excess temperature and flow analysis, is changing flow by driving circuit
The flow of regulating valve 302 and air quantity damper 402 adjusts the burning inside combustion chamber 101.
In the present invention, by the way that the flue gas of different temperatures is mixed, set so that all flue gases can reach
More than constant temperature degree, and in this process, only need to ensure that the pipeline of high-temperature flue gas carries out high temperature protection, without
All pipelines must all be protected, can so save the maintenance to pipeline, but also can be according to different situations, difference
Temperature requirements adjust the temperature of different flue gases, and this process is highly important for the processing of flue gas.In order to reduce
The generation of unqualified tail gas in the present invention, not only handles the low temperature exhaust gas of peripheral hardware, but also the tail gas for processing unit in itself
Also can be monitored and vent gas treatment so that all tail gas can be mixed the setting temperature for reaching vent gas treatment
Degree, reduces the generation of tail gas not up to standard as far as possible.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Claims (10)
1. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method, it is characterised in that：Include the following steps：
S100, temperature-measuring heat couple is set in the smoke inlet pipe of SCR flue gas denitrification systems, the smoke temperature that temperature-measuring heat couple is measured passes through temperature
Integrated control system analyzing and processing is spent, and smoke temperature Adaptable System is controlled to run；
S200, gas burning system is installed in the arrival ends of SCR flue gas denitrification systems, and according to the fuel gases calorific value of gas burning system to combustion
Throughput and air mass flow carry out cooperation adjusting so that combustion gas and air proportionally enter gas burning system；
S300, the flue gas mixer mating with it is installed in the port of export of gas burning system, proportionally into the combustion gas system
The flue gas generated after the mixed gas burning of system enters flue gas mixer, and passes through the burning of combustion gas auxiliary combustion chamber and spray high temperature cigarette
Gas is mixed with the low-temperature flue gas in flue, and the temperature into the gas approach of SCR flue gas denitrification systems is made to maintain design temperature
It is more than value.
2. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 1, it is characterised in that：Institute
It states in SCR denitration system equipment flue mounted externally or itself low temperature flue, in the step S300, external equipment cigarette
Road or itself low temperature flue are boiler flue.
3. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 1, it is characterised in that：Institute
Step S100 is stated to further include：
When the smoke temperature of temperature-measuring heat couple measurement is less than 320 DEG C, SCR flue gas denitrification systems enter the preparation that puts into operation；
When the smoke temperature of temperature-measuring heat couple measurement is less than 300 DEG C, SCR flue gas denitrification systems start to put into operation.
4. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 1, it is characterised in that：Institute
It is 300 DEG C to state the set temperature value described in step S300.
5. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 1, it is characterised in that：Institute
State the gas supply system that gas burning system (1) includes combustion chamber (101) and provides combustion gas and air to combustion chamber (101) respectively
(3) and air supply system (4), the arrival end and the port of export of the combustion chamber (101) are mounted on helically annular spread
Voltage regulation of voltage regulation service (102) is connected with flue gas mixer (5), the flue gas mixer in the port of export of gas burning system (1)
(5) the port of export is connected with SCR smoke inlets pipe (6), and is installed with several groups on SCR smoke inlets pipe (6) inner wall
Temperature-measuring heat couple (601), the smoke temperature information of measurement is transmitted to temperature integrated control system (2) by the temperature-measuring heat couple (601), described
The signal output part of temperature integrated control system (2) is electrically connected respectively with gas supply system (3) and air supply system (4).
6. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 5, it is characterised in that：Institute
Stating gas supply system (3) includes fuel gas supply pipeline (301), and flow tune is equipped on the gas supply pipeline (301)
Valve (302) is saved, real-time flow meter (303) is equipped on the inside of the flow control valve (302).
7. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 5, it is characterised in that：Institute
Stating air supply system (4) includes air feed conduit (401), is installed in the arrival end of air feed conduit (401)
Air quantity damper (402), the inside of the air quantity damper (402) are also installed with real-time flow meter (303).
8. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 5, it is characterised in that：And
Two voltage regulation of voltage regulation services (102) are being equipped with positioned at combustion chamber (301) port of export, wherein a voltage regulation of voltage regulation supply pipe
Road (102) is connected with boiler flue (304), and in addition a voltage regulation of voltage regulation service (102) is then connected with high-temperature flue gas pipe
(305), the inner wall for the high-temperature flue gas pipe (305) being connected with voltage regulation of voltage regulation service (102) is installed with high temperature resistant pottery
Tile (306), the voltage regulation of voltage regulation service (102) are connected to fuel gas supply pipeline (301) and air feed conduit
(401), and inside voltage regulation of voltage regulation service (102) it is installed with deflector (103).
9. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 8, it is characterised in that：Institute
The junction for stating voltage regulation of voltage regulation service (102) and high-temperature flue gas pipe (305) is installed with combustion gas auxiliary burner
(307), the combustion gas auxiliary combustion chamber (307) is connected by mixing gas-guide tube (308) with the arrival end of combustion chamber (101).
10. a kind of SCR denitration system inlet flue gas temperature adaptive regulation method according to claim 5, it is characterised in that：Institute
It states temperature integrated control system (2) and is also associated with fuel gas supply pipeline (301) and the real-time streams of air feed conduit (401) inside
Gauge (303), the temperature integrated control system (2) are also electrically connected with flow control valve (302) and air quantity damper
(402), the temperature integrated control system (2) receives smoke temperature information and flow information, and through excess temperature and flow analysis,
It is adjusted changing the flow of flow control valve (302) and air quantity damper (402) by driving circuit in combustion chamber (101)
The burning in portion.
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| CN201711238282.9A CN108105794B (en) | 2017-11-30 | 2017-11-30 | SCR denitration system inlet smoke temperature self-adaptive adjusting method |
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| CN201711238282.9A CN108105794B (en) | 2017-11-30 | 2017-11-30 | SCR denitration system inlet smoke temperature self-adaptive adjusting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731027A (en) * | 2018-06-15 | 2018-11-02 | 国电科学技术研究院有限公司 | A kind of control system and method for Rear of Utility Boiler smoke temperature |
| CN109876660A (en) * | 2019-04-12 | 2019-06-14 | 西安西热锅炉环保工程有限公司 | A kind of Direct-type low-temperature smoke air SCR denitrating system and its working method |
| CN109876659A (en) * | 2019-04-12 | 2019-06-14 | 西安西热锅炉环保工程有限公司 | A kind of low-temperature smoke air SCR denitrating system and its working method |
| CN115121101A (en) * | 2022-04-25 | 2022-09-30 | 江苏国信靖江发电有限公司 | Method for adjusting temperature of smoke inlet end of SCR (selective catalytic reduction) system in thermal power generating unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204962817U (en) * | 2015-09-08 | 2016-01-13 | 东方电气集团东方锅炉股份有限公司 | SCR flue gas denitration system that full load mode put into operation |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204962817U (en) * | 2015-09-08 | 2016-01-13 | 东方电气集团东方锅炉股份有限公司 | SCR flue gas denitration system that full load mode put into operation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731027A (en) * | 2018-06-15 | 2018-11-02 | 国电科学技术研究院有限公司 | A kind of control system and method for Rear of Utility Boiler smoke temperature |
| CN109876660A (en) * | 2019-04-12 | 2019-06-14 | 西安西热锅炉环保工程有限公司 | A kind of Direct-type low-temperature smoke air SCR denitrating system and its working method |
| CN109876659A (en) * | 2019-04-12 | 2019-06-14 | 西安西热锅炉环保工程有限公司 | A kind of low-temperature smoke air SCR denitrating system and its working method |
| CN115121101A (en) * | 2022-04-25 | 2022-09-30 | 江苏国信靖江发电有限公司 | Method for adjusting temperature of smoke inlet end of SCR (selective catalytic reduction) system in thermal power generating unit |
| CN115121101B (en) * | 2022-04-25 | 2023-10-10 | 江苏国信靖江发电有限公司 | Method for adjusting temperature of smoke inlet end of SCR (selective catalytic reduction) system in thermal power unit |
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