CN209348415U - Smoke and waste steam boiler, denitrification integrated device - Google Patents
Smoke and waste steam boiler, denitrification integrated device Download PDFInfo
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- CN209348415U CN209348415U CN201821997901.2U CN201821997901U CN209348415U CN 209348415 U CN209348415 U CN 209348415U CN 201821997901 U CN201821997901 U CN 201821997901U CN 209348415 U CN209348415 U CN 209348415U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
A kind of smoke and waste steam boiler, denitrification integrated device, the integrated apparatus include the high-temperature residual heat boiler section set gradually by flow of flue gas direction, SCR conversion zone, evaporator section, and mixing section, temperature adjustment section are equipped between high-temperature residual heat boiler section and SCR conversion zone；Afterheat boiler system is equipped in the high-temperature residual heat boiler section, SCR reactor is equipped in SCR conversion zone, the SCR reactor includes the middle low temperature catalyst of SCR reaction chamber bed and loading, catalysis reaction is carried out to the nitrogen oxides in flue gas by the effect of middle low temperature catalyst, the flue-gas temperature of the temperature adjustment section outlet is controlled and is adjusted by the middle low temperature catalyst active temperature loaded on SCR reaction chamber bed, and heat exchanger is equipped in the evaporator section.The UTILIZATION OF VESIDUAL HEAT IN of flue gas, denitration, noise reduction are assembled unified entirety by the utility model, while being optimized, being innovated in structure and component, are facilitated operation and management, are reduced investment and use cost.
Description
Technical field
The utility model relates to flue gas utilization device, belong to boiler technology field more particularly to a kind of smoke and waste steam boiler,
Denitrification integrated device.
Background technique
Because there is heat energy loss in the requirement of working condition, boiler or electricity generation system.The fuel such as coal or combustion gas institute
The chemical energy contained, wherein about 35% is converted into electric energy, 30% with exhaust gas discharge, 25% by engine cooling water by generating set
Take away, fuselage distributes etc., and other losses account for about 10%, the heat loss aggregate power of exhaust gas and heat exchanger is more than useful work, at me
State generally counts the calorific value of each class A fuel A nearly 55%, is discharged and wasted by exhaust gas and cooling water heat resource.
In addition, a large amount of sulfide contained in flue gas, nitride gas, if the direct emission without removing, Yi Zao
At the pollution of atmospheric environment.Existing exhaust gas denitration, when delivery temperature is 400-600 DEG C, it is necessary to use high temperature catalyst.High temperature
Catalyst is expensive, and activity temperature window is narrow, and the higher and discarded catalyst of active window temperature easily causes secondary pollution；In addition,
Flue gas emission noise is larger, reaches 80~90 decibels, generates noise pollution.
Existing boiler and electricity generation system need to use waste heat recycling, denitration, noise reduction to solve the problems, such as the above three classes respectively
Three sets of equipment of system, and be independent operating, independently installed arrangement between three sets of systems, management is many and diverse, operation harmony is poor, greatly
Investment, use and management cost are improved greatly.
As Chinese patent (application publication number CN106215695A) discloses, " a kind of sintering flue gas and desulfurizing and denitrifying is
System and its implementation ", the method are the two-way sintering flue gas that is come out by sintering machine after deduster, sintering flue gas all the way
It carries out heat exchange heating with the high temperature sinter that sintering machine comes out to be mixed with the sintering flue gas of another way again, temperature is promoted laggard
Enter SCR reactor, catalytic reduction reaction is carried out in SCR reactor, completes the nitrogen oxides removal in sintering flue gas, go to denitrogenate
Sintering flue gas after oxide enters back into waste heat boiler and carries out flue gas heat recovery, while cooling down by residual heat boiler for exchanging heat
Sintering flue gas afterwards enters the removing that desulfurizer carries out sulfur dioxide, the neat stress qualified discharge after desulphurization denitration.
For another example Chinese patent (Authorization Notice No. CN202328143U) discloses a kind of " denitrating flue gas and waste heat boiler one
Makeup is set ", including the front furnace body and rear furnace body being connected by flue；It is equipped with gas inlet in the lower part of front furnace body, in rear furnace body
Lower part be equipped with exhanst gas outlet.In the front furnace body above gas inlet, it is sequentially provided with superheater, evaporator A, spray
Ammonia grid and mixer；It is sequentially provided in the rear furnace body above exhanst gas outlet except oxygen evaporator, economizer, evaporation
Device B, catalyst and soot blower.The bypass with butterfly valve B that can penetrate through the two is equipped between evaporator A, B, and in evaporator
It is equipped with butterfly valve A between A and ammonia-spraying grid, butterfly valve C is equipped between evaporator B and catalyst.
Above-mentioned and existing heat recovery, denitrating system are still focused on only in technical concept from one party
Reformed AHP is carried out on the thermal efficiency in face or denitration, but whole utilization rate of waste heat and denitration effect is still poor.
Utility model content
The utility model provides a kind of smoke and waste steam boiler, denitrification integrated device, for solving in the prior art ask
Topic.
In order to realize the purpose of this utility model, using following technical scheme:
Smoke and waste steam boiler, denitrification integrated device, the integrated apparatus include setting gradually by flow of flue gas direction
High-temperature residual heat boiler section, SCR conversion zone, evaporator section, between high-temperature residual heat boiler section and SCR conversion zone be equipped with mixing section, adjust
Temperature section；It is equipped with afterheat boiler system in the high-temperature residual heat boiler section, is equipped with SCR reactor in SCR conversion zone, the SCR is anti-
Answering device includes the middle low temperature catalyst of SCR reaction chamber bed and loading, is acted on by middle low temperature catalyst to the nitrogen in flue gas
Oxide carries out catalysis reaction, and the flue-gas temperature of the temperature adjustment section outlet is by low-temperature catalyzed in loading on SCR reaction chamber bed
The control of agent active temperature and adjusting, the evaporator section is interior to be equipped with heat exchanger.
In order to further realize the purpose of this utility model, following technical scheme can also be used:
Smoke and waste steam boiler, denitrification integrated device as described above, the evaporator section is to be vertically arranged, before evaporator section
Integrated apparatus structure is horizontal arrangement.
Smoke and waste steam boiler, denitrification integrated device as described above, are equipped with drop between the evaporator section and SCR conversion zone
It makes an uproar noise reduction section, noise-reduction section is located at below evaporator section, is equipped in the noise-reduction section and is adjusted the water conservancy diversion of flue gas flow rate and disturb
Flow device.
As described above smoke and waste steam boiler, denitrification integrated device, before the mixing section is located at temperature adjustment section, mixing section with
Flue gas injection device is equipped between high-temperature residual heat boiler.
Smoke and waste steam boiler, denitrification integrated device as described above, the mixing section is interior to be equipped with flue gas nozzle, flue gas spray
Inlet communication on the upside of mouth and mixing section, flue gas nozzle rear side install mixer, and it is different to have multiple directions on the mixer
Flow backwards piece.
Smoke and waste steam boiler, denitrification integrated device as described above, the mixing section is interior to be equipped with deflector and grid.
Smoke and waste steam boiler, denitrification integrated device as described above, the temperature adjustment section is interior to be led equipped with thermosistor and flue gas
Flowing plate, thermosistor gas inlet are connected to mixing section side exit, and the exhanst gas outlet of thermosistor is connected to temperature adjustment section exhanst gas outlet,
Smoke deflector is located between the exhanst gas outlet of thermosistor and temperature adjustment section exhanst gas outlet.
Smoke and waste steam boiler, denitrification integrated device as described above, the front end of the SCR conversion zone, rear end dress difference
Temperature sensor and NO are installedXMultiple SCR reaction chamber beds, SCR reaction chamber bed are installed in sensor, SCR conversion zone middle part
For detachable structure, the middle low temperature catalyst of different number and model is loaded with cooperation.
Smoke and waste steam boiler, denitrification integrated device as described above, SCR reaction chamber bed centre setting adjust ammonia
The intermediate mixer of nitrogen molar ratio.
As described above smoke and waste steam boiler, denitrification integrated device, the heat exchanger be economizer and or superheater,
Heat exchanger have extended surface heat exchange element, the extended surface heat exchange element be H-type and or needle type fin pipe.
Compared with prior art, the utility model has the beneficial effects that
1, the integrated apparatus of the utility model, 400~600 DEG C of high-temperature flue gas is after high-temperature residual heat boiler section, cigarette
Temperature degree can be down to middle low temperature catalyst optimum activity temperature, guarantee that flue gas has with middle low temperature catalyst in SCR conversion zone
Optimal reaction condition makes denitrating flue gas realize optimum efficiency, while middle low temperature catalyst is relative to high temperature catalyst, due in
The active temperature windows of low temperature catalyst are wide, can preferably increase the efficiency of denitrating flue gas, meanwhile, catalyst can be greatly reduced
Use cost.
2, temperature is adjusted by waste heat depth recovery system, it can be achieved that the denitration of machine full working scope operation requires.It is unique
Interior design can be effectively reduced exhaust noise, reach national requirements for environmental protection.
3, the utility model will UTILIZATION OF VESIDUAL HEAT IN, denitration, noise reduction be in the prior art three independent systems, form one
Unified entirety, centralized control, facilitate operational administrative and use, can be realized the optimal synthetic operation of system；Integrated design, one
Body mounting arrangements solve the problems, such as former three system wastes spaces, materials；System resistance can be effectively reduced simultaneously, improve acting
Efficiency reduces investment, use and management cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of noise-reduction section described in Fig. 1 and evaporator section；
Fig. 3 is the structural schematic diagram of SCR conversion zone in Fig. 1；
Appended drawing reference: 1- high-temperature residual heat boiler section, 2- mixing section, 3- temperature adjustment section, 4-SCR conversion zone, 41- carrier section, 5-
Evaporator section, 51- heat exchanger, 52- evaporator section exhanst gas outlet, 6- noise-reduction section.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.
As shown in Figs. 1-2, a kind of smoke and waste steam boiler, denitrification integrated device disclosed in the present embodiment, this is integrally disguised
Set high-temperature residual heat boiler section 1, mixing section 2, temperature adjustment section 3, SCR conversion zone 4, evaporator section 5 five including being sequentially communicated by flue
Part is constituted.
As shown in Figure 1, being equipped with horizontal type waste heat boiler in the high-temperature residual heat boiler section 1 of the present embodiment, exist to outlet temperature
400~600 DEG C of fume afterheat is recycled, and after the fume afterheat for extracting high temperature section, the mesolow for producing high-quality steams
Vapour, for generating electricity, heating or produce.Mixing section 2 is located at the downside of high-temperature residual heat boiler, is tubular structure, thereon side-entrance
It is connect with the exhanst gas outlet of high-temperature residual heat boiler, side exit is connect with 3 import of temperature adjustment section.
Flue gas nozzle, inlet communication on the upside of flue gas nozzle and mixing section, flue gas nozzle rear side installation are provided in mixing section 2
Mixer, with the refluence piece that multiple directions are different on mixer.Mixed gas can generate mixed flow when passing through it, so that mixing
Gas is sufficiently mixed.
Thermosistor is equipped in temperature adjustment section 3, thermosistor gas inlet is connected to mixing section side exit, and the flue gas of thermosistor goes out
Mouth is connected to temperature adjustment section exhanst gas outlet.Delivery temperature is controlled in the ideal response temperature range of middle low temperature catalyst, is mentioned significantly
The transformation efficiency of high catalyst.
As shown in figure 3, SCR reaction chamber bed is arranged in the SCR conversion zone 4 of the present embodiment, SCR reaction chamber bed is equipped with
Middle low temperature catalyst, the flue gas that temperature adjustment section 3 comes out is perpendicular through SCR reaction chamber bed.The front end of SCR conversion zone 3, rear end dress
It is respectively arranged with temperature sensor and NOXSensor, in the middle part of SCR conversion zone 4 in installation low temperature catalyst carrier section 41, the carrier
Section 41 is detachable structure, for carrying and installing the middle low temperature catalyst of multiple and different quantity and model.
Relative to expensive existing for high temperature catalyst, active temperature window is narrow；Active window temperature is higher and discarded to urge
Agent easily causes the shortcomings that secondary pollution etc., and the low temperature catalyst in SCR reaction chamber bed use can be reduced into greatly
This, and after mixing section, temperature adjustment section adjust the mixing of flue gas and temperature, can preferably improve in low temperature catalyst work
Property, realize NOXPurifying rate is high, backpressure requirements are low, meet the denitration requirement of 0~100% load operation of machine.
Smoke deflector is set in temperature adjustment section, and smoke deflector is located at the exhanst gas outlet and temperature adjustment section exhanst gas outlet of thermosistor
Between.For enabling flue gas vertical through SCR reaction chamber bed, usually there is cigarette before with SCR reaction chamber after the mixer
Conductance flowing plate, flue gas are uniformly distributed and flow through catalyst bed, under the effect of the catalyst, NH after passing through deflector3With NOXHair
Raw reduction reaction, generates nitrogen and water without secondary pollution.
Further, the intermediate mixer for adjusting ammonia nitrogen molar ratio is arranged in the present embodiment among SCR reaction chamber bed.
As shown in Figure 1 and Figure 2, the present embodiment is equipped with noise-reduction section 6 between SCR conversion zone 4 and evaporator section 5, and noise reduction disappears
The water conservancy diversion and disturbing flow device for adjusting flue gas flow rate are installed in segment 6.Relative to existing method of denitration and device, the present embodiment
In SCR conversion zone 4 in cancel independent muffler, and reasonable to adjust and optimize flue gas stream by water conservancy diversion and disturbing flow device
Fast, all kinds of inner cavities can reduce flue gas kinetic energy, to greatly reduce flue gas noise to 45~60 decibels, avoid noise pollution.
Evaporator section 5 is vertical, the low temperature exhaust heat boiler including horizontal, vertical mixed-arrangement, in low temperature exhaust heat boiler
It is provided with heat exchanger 51, which can have for the combination arrangement of economizer or superheater or both, heat exchanger 51
Extended surface heat exchange element, extended surface heat exchange element be H-type and or needle type fin pipe.By evaporator section to low temperature cigarette
The UTILIZATION OF VESIDUAL HEAT IN of gas, flue gas enter smoke stack emission from evaporator section exhanst gas outlet 52.
The integrated apparatus of the utility model forms unified entirety, a centralized control, facilitates operational administrative and makes
With can be realized the optimal synthetic operation of system；Integrated design, integrated mounting arrangements, solve former three system wastes spaces, materials
The problem of material；System resistance can be effectively reduced simultaneously, improve mechanical efficiency, reduce investment, use and management cost.So as to reality
Existing thermal energy depth recycling, improves heat utilization rate, improves the thermal efficiency, accomplish energy-saving and emission-reduction, reach 120 DEG C of left sides of exhaust gas temperature
The right side makes the thermal efficiency of boiler or generating set can achieve 88% or more.
While gradient utilizes more than the flue gas, integrated setting SCR denitration and cooperating are, it can be achieved that NOx purifying rate
Height, backpressure requirements are low, meet the denitration requirement of 0~100% load operation of machine.
The technology contents of the not detailed description of the utility model are well-known technique.
Claims (10)
1. smoke and waste steam boiler, denitrification integrated device, which is characterized in that the integrated apparatus includes pressing flow of flue gas direction
The high-temperature residual heat boiler section that sets gradually, SCR conversion zone, evaporator section are equipped with mixed between high-temperature residual heat boiler section and SCR conversion zone
Close section, temperature adjustment section；It is equipped with afterheat boiler system in the high-temperature residual heat boiler section, is equipped with SCR reactor, institute in SCR conversion zone
The middle low temperature catalyst that SCR reactor includes SCR reaction chamber bed and loading is stated, is acted on by middle low temperature catalyst to flue gas
In nitrogen oxides carry out catalysis reaction, the flue-gas temperature of the temperature adjustment section outlet is by low in loading on SCR reaction chamber bed
Warm catalyst activity temperature control and adjusting, the evaporator section is interior to be equipped with heat exchanger.
2. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that the evaporator section is
It is vertically arranged, the integrated apparatus structure before evaporator section is horizontal arrangement.
3. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that the evaporator section with
Noise-reduction section is equipped between SCR conversion zone, noise-reduction section is located at below evaporator section, is equipped with and is adjusted in the noise-reduction section
The water conservancy diversion and disturbing flow device of flue gas flow rate.
4. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that the mixing section is set
Before temperature adjustment section, flue gas injection device is equipped between mixing section and high-temperature residual heat boiler.
5. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that in the mixing section
Equipped with flue gas nozzle, inlet communication on the upside of flue gas nozzle and mixing section installs mixer on rear side of flue gas nozzle, on the mixer
With the different refluence piece of multiple directions.
6. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that in the mixing section
Equipped with deflector and grid.
7. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that in the temperature adjustment section
Equipped with thermosistor and smoke deflector, thermosistor gas inlet is connected to mixing section side exit, the exhanst gas outlet of thermosistor with
The connection of temperature adjustment section exhanst gas outlet, smoke deflector are located between the exhanst gas outlet of thermosistor and temperature adjustment section exhanst gas outlet.
8. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that the SCR conversion zone
Front end, rear end dress be separately installed with temperature sensor and NOXMultiple SCR reaction chamber beds are installed at sensor, SCR conversion zone middle part
Layer, SCR reaction chamber bed are detachable structure, to cooperate the middle low temperature catalyst for loading different number and model.
9. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that the SCR reaction chamber
Setting adjusts the intermediate mixer of ammonia nitrogen molar ratio among bed.
10. smoke and waste steam boiler according to claim 1, denitrification integrated device, which is characterized in that the heat exchanger is
Economizer and or superheater, heat exchanger have extended surface heat exchange element, the extended surface heat exchange element be H-type and
Or needle type fin pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821997901.2U CN209348415U (en) | 2018-11-30 | 2018-11-30 | Smoke and waste steam boiler, denitrification integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821997901.2U CN209348415U (en) | 2018-11-30 | 2018-11-30 | Smoke and waste steam boiler, denitrification integrated device |
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| CN209348415U true CN209348415U (en) | 2019-09-06 |
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| CN201821997901.2U Active CN209348415U (en) | 2018-11-30 | 2018-11-30 | Smoke and waste steam boiler, denitrification integrated device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346510A (en) * | 2020-03-06 | 2020-06-30 | 海湾环境科技（北京）股份有限公司 | Gas purification system and gas purification method |
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2018
- 2018-11-30 CN CN201821997901.2U patent/CN209348415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346510A (en) * | 2020-03-06 | 2020-06-30 | 海湾环境科技（北京）股份有限公司 | Gas purification system and gas purification method |
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