CN203857474U - Coal-fired boiler catalytic combustion-supporting and SNCR (Selective Non Catalytic Reduction) combined denitration device - Google Patents
Coal-fired boiler catalytic combustion-supporting and SNCR (Selective Non Catalytic Reduction) combined denitration device Download PDFInfo
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- CN203857474U CN203857474U CN201320881602.3U CN201320881602U CN203857474U CN 203857474 U CN203857474 U CN 203857474U CN 201320881602 U CN201320881602 U CN 201320881602U CN 203857474 U CN203857474 U CN 203857474U
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- coal
- reducing agent
- burning boiler
- ature
- catalytic combustion
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 32
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract 2
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 70
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000003245 coal Substances 0.000 claims abstract description 45
- 239000000446 fuel Substances 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 239000003814 drug Substances 0.000 claims description 15
- 239000012895 dilution Substances 0.000 claims description 12
- 238000010790 dilution Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000012806 monitoring device Methods 0.000 abstract description 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 abstract 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 23
- 238000006555 catalytic reaction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Abstract
The utility model discloses a coal-fired boiler catalytic combustion-supporting and SNCR (Selective Non Catalytic Reduction) combined denitration device, which comprises a coal-fired boiler, wherein a coal fuel conveying mechanism is connected onto the coal-fired boiler, and a catalyst storing and adding device for accurately adding a catalytic combustion-supporting reagent according to the flow of coal fuel in the coal fuel conveying mechanism is connected onto the coal fuel conveying mechanism; a reducing agent storing and adding mechanism is also arranged on the coal-fired boiler, and a tail gas treatment mechanism is arranged at the upper part of the coal-fired boiler; a nitrogen oxide online monitoring device is connected onto the tail gas treatment mechanism, and is connected with an exhaust pipe at the upper part of the coal-fired boiler. The denitration device also comprises a power control and industrial personal computer. The coal-fired boiler catalytic combustion-supporting and SNCR combined denitration device provided by the utility model has the advantages of reduction in emission of nitrogen oxide of coal-fired boiler flue gas, low operating cost and good effect.
Description
[technical field]
The utility model relates to a kind of energy-conservation environmentally friendly coal-burning boiler catalytic combustion-supporting and SNCR combined denitration device.
[background technology]
China Today, along with the industrialized development of China, China's boiler fired coal pollutes and is on the rise, the pollution range of acid rain, flue dust progressively expands, under the effort of country, local government, the at present discharge of sulfur dioxide, flue dust has obtained certain control, and nitrogen oxide in flue gas does not very obtain due control.Industrialization development has arrived certain degree, and living standards of the people are become better and better, and simultaneously the people are also more and more higher to environmental requirement, and denitrating flue gas is to can't but go ahead, imperative situation.At present application at most, the most effective denitration product has SNCR, SCR technique device, above-mentioned technique device is obtained the approval of government and society for large-sized boiler coal-fired flue-gas, yet but there is larger dispute in the coal-fired flue gas denitration that is applied to medium small boiler numerous, that extensively distribute, the investment of its costliness and operating cost are the biggest obstacles of promoting, and are badly in need of a kind of investment of exploitation and the low denitration technology device of operating cost.
[utility model content]
The utility model object is in order to overcome the deficiencies in the prior art, and a kind of discharged nitrous oxides that can reduce boiler fired coal flue gas is provided, the coal-burning boiler catalytic combustion-supporting that operating cost is low, effective and SNCR combined denitration device.
In order to solve the technical problem of above-mentioned existence, the utility model by the following technical solutions:
A kind of coal-burning boiler catalytic combustion-supporting and SNCR combined denitration device, it is characterized in that: include coal-burning boiler, on described coal-burning boiler, be connected with ature of coal fuel conveying mechanism, on described ature of coal fuel conveying mechanism, be connected with and can accurately add according to the flow of ature of coal fuel in ature of coal fuel conveying mechanism catalyst stores and the throwing device of catalytic combustion-supporting medicament, on described coal-burning boiler, be provided with reducing agent and store and add mechanism, on described coal-burning boiler top, be provided with tail gas processing mechanism, on described tail gas processing mechanism, be connected with nitrogen oxide on-Line Monitor Device, described nitrogen oxide on-Line Monitor Device is connected with coal-burning boiler top blast pipe, also including the data that can detect according to nitrogen oxide on-Line Monitor Device regulates the catalyst injected volume of catalyst stores and throwing device and regulates reducing agent to store and add dynamic Control and the industrial computer of the addition amount of reducing agent of mechanism.
A kind of coal-burning boiler catalytic combustion-supporting as above and SNCR combined denitration device, it is characterized in that described ature of coal fuel conveying mechanism includes can be by the ature of coal fuel delivery means in ature of coal fuel input coal-burning boiler, thus on described ature of coal fuel delivery means, be provided with can measure ature of coal fuel delivery means in ature of coal fuel flow rate realizing than precisely adding the ature of coal metering device of catalytic combustion-supporting medicament to catalyst stores and throwing device detecting data feedback.
A kind of coal-burning boiler catalytic combustion-supporting as above and SNCR combined denitration device, it is characterized in that described reducing agent stores and adds mechanism and includes reducing agent storage and throwing device, on the connecting line between described reducing agent storage and throwing device and coal-burning boiler, be provided with reducing agent distributor, on reducing agent distributor, be connected with injection of reducing agent injection device, the jet blower of described injection of reducing agent injection device is arranged in coal-burning boiler.
A kind of coal-burning boiler catalytic combustion-supporting as above and SNCR combined denitration device, is characterized in that being connected with the reducing agent dissolved dilution device for dissolved dilution SNCR denitrification reducing agent on described reducing agent storage and throwing device.
A kind of coal-burning boiler catalytic combustion-supporting as above and SNCR combined denitration device, it is characterized in that described tail gas processing mechanism includes the deduster being connected with described blast pipe, on the outlet side of described deduster, be connected with devulcanizer, described devulcanizer outlet side is connected with blowdown stack, and described nitrogen oxide on-Line Monitor Device is connected with described blowdown stack.
A kind of coal-burning boiler catalytic combustion-supporting as above and SNCR combined denitration device, is characterized in that being provided with flue gas sampling mouth on described blowdown stack.
A kind of coal-burning boiler catalytic combustion-supporting as above and SNCR combined denitration device, is characterized in that being provided with flue gas sampling mouth on described blast pipe.
The utility model denitration efficiency can reach more than 70%, higher 5～18 percentage points than the denitration efficiency of general SNCR device; This denitrification apparatus moves automatically, accurately controls the relevant electromechanical equipment of dosage and VFC, reduces medicine consumption energy consumption, reduces operating cost; This denitrification apparatus catalysis burning-rate accelerator can improve 5～15 percentage points of coal-burning boiler efficiency, greatly saves the energy, realizes economic benefit.When realizing reduction of discharging nitrogen oxide, realizing the saving of the energy, is a kind of environmentally friendly denitrification apparatus of environmental protection and energy saving.
The utility model compared with prior art has the following advantages:
The utility model is respectively equipped with catalyst stores and throwing device, ature of coal metering device, reducing agent dissolved dilution device, reducing agent storage and throwing device, reducing agent distributor, injection of reducing agent injection device, dynamic Control and industrial computer, nitrogen oxide on-Line Monitor Device.By the comprehensive utilization of these unit, make it to process well the nitrogen oxide in coal-fired flue-gas, realize and reduce discharging nitrogen oxide.
[accompanying drawing explanation]
Fig. 1 is principle schematic of the present utility model.
[specific embodiment]
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 1, a kind of coal-burning boiler catalytic combustion-supporting of the utility model and SNCR combined denitration device, include coal-burning boiler 1, on described coal-burning boiler 1, be connected with ature of coal fuel conveying mechanism 2, on described ature of coal fuel conveying mechanism 2, be connected with and can accurately add according to the flow of ature of coal fuel in ature of coal fuel conveying mechanism 2 catalyst stores and the throwing device 3 of catalytic combustion-supporting medicament, on described coal-burning boiler 1, be provided with reducing agent and store and add mechanism 4, on described coal-burning boiler 1 top, be provided with tail gas processing mechanism 5, on described tail gas processing mechanism 5, be connected with nitrogen oxide on-Line Monitor Device 6, described nitrogen oxide on-Line Monitor Device 6 is connected with coal-burning boiler 1 top blast pipe 7, also including the data that can detect according to nitrogen oxide on-Line Monitor Device 6 regulates the catalyst injected volume of catalyst stores and throwing device 3 and regulates reducing agent to store and add dynamic Control and the industrial computer 8 of the addition amount of reducing agent of mechanism 4.
The fuel of ature of coal described in the utility model conveying mechanism 2 includes can be by the ature of coal fuel delivery means 21 in ature of coal fuel 9 input coal-burning boilers 1, thus on described ature of coal fuel delivery means 21, be provided with can measure ature of coal fuel delivery means 21 in ature of coal fuel 9 flows realizing than precisely adding the ature of coal metering device 22 of catalytic combustion-supporting medicament to catalyst stores and throwing device 3 detecting data feedback.Realize and precisely add according to a certain ratio catalytic combustion-supporting medicament, keep the stable of follow-up denitration performance.
The utility model catalyst stores and throwing device 3 are used for the combustion-supporting medicament of storage catalytic and add catalytic combustion-supporting medicament, the delivery pump that catalyst stores and throwing device 3 pass through and pipeline are delivered to ature of coal fuel delivery means 21 medicament and are fully mixed with ature of coal fuel 9, keep the stable of follow-up denitration performance.Described catalyst stores and throwing device 3 and 21 interlocks of ature of coal fuel delivery means, catalysis burning-rate accelerator has denitration and energy-conserving action concurrently.
Reducing agent described in the utility model stores and adds mechanism 4 and includes reducing agent storage and throwing device 41, on the connecting line between described reducing agent storage and throwing device 41 and coal-burning boiler 1, be provided with reducing agent distributor 42, on reducing agent distributor 42, be connected with injection of reducing agent injection device 43, the jet blower of described injection of reducing agent injection device 43 is arranged in coal-burning boiler 1.Wherein on described reducing agent storage and throwing device 41, be connected with the reducing agent dissolved dilution device 44 for dissolved dilution SNCR denitrification reducing agent.
In the utility model, reducing agent dissolved dilution device 44 is used for dissolved dilution SNCR denitrification reducing agent, reducing agent dissolved dilution device 44 by delivery pump and pipeline, medicament is delivered to reducing agent storage and throwing device 41 to be used.Described reducing agent dissolved dilution device 44 is also supporting mixer, ultrasonic solution potential difference instrument, motor-driven valve, flowmeter and a temperature monitor;
In the utility model, reducing agent storage and throwing device 41 are used for storing and adding SNCR denitrification reducing agent, and delivery pump and pipeline that device is installed are delivered to reducing agent distributor 42 medicament.The storage of described reducing agent and throwing device 41 are also supporting mixer, ultrasonic solution potential difference instrument, motor-driven valve, flowmeter and a temperature monitor.
In the utility model, reducing agent distributor 42 is used for distributing SNCR denitrification reducing agent, and device is reasonably allocated to SNCR denitrification reducing agent on injection of reducing agent injection device 43 on demand.Described reducing agent distributor 42 is supporting hand-operated valve, flowmeter.
The utility model reducing agent distributor 42 is used for to the set burner hearth area spray of boiler body SNCR denitrification reducing agent, and the nitrogen oxide in reducing agent and coal-fired flue-gas reacts, and reaction of nitrogen oxides generates stable nitrogen, and nitrogen oxide is removed.Described injection of reducing agent injection device is supporting high-pressure air tube, helps to dispel reducing agent and fully mixes and contact with coal-fired flue-gas, prevents that injection of reducing agent injection device is by the flue dust plug nozzle in coal-fired flue-gas simultaneously;
Tail gas processing mechanism described in the utility model 5 includes the deduster 51 being connected with described blast pipe 7, on the outlet side of described deduster 51, be connected with devulcanizer 52, described devulcanizer 52 outlet sides are connected with blowdown stack 53, and described nitrogen oxide on-Line Monitor Device 6 is connected with described blowdown stack 53.
The utility model is provided with flue gas sampling mouth 10 on described blowdown stack 53.On described blast pipe 7, be provided with flue gas sampling mouth 10.
The utility model medium power is controlled and industrial computer 8 passes through to receive the signals such as boiler load, fire box temperature, on-line monitoring, ature of coal metering, ultrasonic solution potential difference, and process coherent signal, realize automatic frequency-conversion and control that catalysis co-catalyst stores and throwing device 3 adds medicament, automatic frequency-conversion controls reducing agent dissolved dilution device 44 quantitatively to reducing agent storage and throwing device 41 carries reducing agents, automatic frequency-conversion to control reducing agent storage and throwing device 41 is quantitatively carried reducing agents to reducing agent distributor 42; Dynamic Control and industrial computer 8 are provided with manual control simultaneously.
In the utility model, line oxide monitoring device 6 is used for monitoring analysis boiler body outlet and arrive the indexs such as nitrogen oxide, oxygen content of the coal-fired flue-gas at blowdown stack 53 places through deduster 51 and devulcanizer 52, and the indexs such as nitrogen oxide, oxygen content are fed back to dynamic Control and industrial computer 8.Nitrogen oxide on-Line Monitor Device is supporting flue gas sampling system 10.The on-line monitoring network docking of this nitrogen oxide on-Line Monitor Device Hai Keyu Environmental Protection Agency.
In the utility model, boiler fired coal flue gas nitrogen oxide is after " catalytic combustion-supporting+SNCR " denitrification apparatus is processed, and its nitrogen oxide index clearance can reach more than 70%, higher 5～18 percentage points than the denitration efficiency of general SNCR device; This denitrification apparatus is realized operation automatically, accurately controls the relevant electromechanical equipment of dosage and VFC, reduces medicine consumption energy consumption, reduces operating cost; This denitrification apparatus catalysis burning-rate accelerator can improve 5～15 percentage points of coal-burning boiler efficiency, greatly saves the energy, realizes economic benefit.When realizing reduction of discharging nitrogen oxide, realizing the saving of the energy, is a kind of environmentally friendly denitrification apparatus of environmental protection and energy saving.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a coal-burning boiler catalytic combustion-supporting and SNCR combined denitration device, it is characterized in that: include coal-burning boiler (1), on described coal-burning boiler (1), be connected with ature of coal fuel conveying mechanism (2), on described ature of coal fuel conveying mechanism (2), be connected with and can accurately add according to the flow of ature of coal fuel in ature of coal fuel conveying mechanism (2) catalyst stores and the throwing device (3) of catalytic combustion-supporting medicament, on described coal-burning boiler (1), be provided with reducing agent and store and add mechanism (4), on described coal-burning boiler (1) top, be provided with tail gas processing mechanism (5), on described tail gas processing mechanism (5), be connected with nitrogen oxide on-Line Monitor Device (6), described nitrogen oxide on-Line Monitor Device (6) is connected with coal-burning boiler (1) top blast pipe (7), also including the data that can detect according to nitrogen oxide on-Line Monitor Device (6) regulates the catalyst injected volume of catalyst stores and throwing device (3) and regulates reducing agent to store and add dynamic Control and the industrial computer (8) of the addition amount of reducing agent of mechanism (4).
2. a kind of coal-burning boiler catalytic combustion-supporting according to claim 1 and SNCR combined denitration device, it is characterized in that described ature of coal fuel conveying mechanism (2) includes can be by the ature of coal fuel delivery means (21) in ature of coal fuel (9) input coal-burning boiler (1), on described ature of coal fuel delivery means (21), be provided with can measure in ature of coal fuel delivery means (21) ature of coal fuel (9) flow and will detect data feedback to catalyst stores and throwing device (3) thus realization ratio precisely adds the ature of coal metering device (22) of catalytic combustion-supporting medicament.
3. a kind of coal-burning boiler catalytic combustion-supporting according to claim 1 and SNCR combined denitration device, it is characterized in that described reducing agent stores and adds mechanism (4) and includes reducing agent storage and throwing device (41), on the connecting line between described reducing agent storage and throwing device (41) and coal-burning boiler (1), be provided with reducing agent distributor (42), on reducing agent distributor (42), be connected with injection of reducing agent injection device (43), the jet blower of described injection of reducing agent injection device (43) is arranged in coal-burning boiler (1).
4. a kind of coal-burning boiler catalytic combustion-supporting according to claim 3 and SNCR combined denitration device, is characterized in that being connected with the reducing agent dissolved dilution device (44) for dissolved dilution SNCR denitrification reducing agent on described reducing agent storage and throwing device (41).
5. a kind of coal-burning boiler catalytic combustion-supporting according to claim 1 and SNCR combined denitration device, it is characterized in that described tail gas processing mechanism (5) includes the deduster (51) being connected with described blast pipe (7), on the outlet side of described deduster (51), be connected with devulcanizer (52), described devulcanizer (52) outlet side is connected with blowdown stack (53), and described nitrogen oxide on-Line Monitor Device (6) is connected with described blowdown stack (53).
6. a kind of coal-burning boiler catalytic combustion-supporting according to claim 5 and SNCR combined denitration device, is characterized in that being provided with flue gas sampling mouth (10) on described blowdown stack (53).
7. a kind of coal-burning boiler catalytic combustion-supporting according to claim 1 and SNCR combined denitration device, is characterized in that being provided with flue gas sampling mouth (10) on described blast pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881602.3U CN203857474U (en) | 2013-12-28 | 2013-12-28 | Coal-fired boiler catalytic combustion-supporting and SNCR (Selective Non Catalytic Reduction) combined denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881602.3U CN203857474U (en) | 2013-12-28 | 2013-12-28 | Coal-fired boiler catalytic combustion-supporting and SNCR (Selective Non Catalytic Reduction) combined denitration device |
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| Publication Number | Publication Date |
|---|---|
| CN203857474U true CN203857474U (en) | 2014-10-01 |
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| CN201320881602.3U Expired - Lifetime CN203857474U (en) | 2013-12-28 | 2013-12-28 | Coal-fired boiler catalytic combustion-supporting and SNCR (Selective Non Catalytic Reduction) combined denitration device |
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| CN (1) | CN203857474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013384A (en) * | 2020-09-02 | 2020-12-01 | 山东茵温特节能环保科技有限公司 | Method and system for cooperatively controlling ash deposition and NOx on heating surface of circulating fluidized bed boiler |
-
2013
- 2013-12-28 CN CN201320881602.3U patent/CN203857474U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013384A (en) * | 2020-09-02 | 2020-12-01 | 山东茵温特节能环保科技有限公司 | Method and system for cooperatively controlling ash deposition and NOx on heating surface of circulating fluidized bed boiler |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |
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| CX01 | Expiry of patent term |