CN109569297A - One kind being used for gas internal-combustion engine fume high-temperature type denitrating system - Google Patents
One kind being used for gas internal-combustion engine fume high-temperature type denitrating system Download PDFInfo
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- CN109569297A CN109569297A CN201910040833.3A CN201910040833A CN109569297A CN 109569297 A CN109569297 A CN 109569297A CN 201910040833 A CN201910040833 A CN 201910040833A CN 109569297 A CN109569297 A CN 109569297A
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- combustion engine
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- ammonia generator
- flue
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- 239000007789 gas Substances 0.000 title claims abstract description 67
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 63
- 239000003517 fume Substances 0.000 title claims abstract description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 172
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 86
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000004202 carbamide Substances 0.000 claims abstract description 34
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 32
- 230000000694 effects Effects 0.000 claims abstract description 31
- 239000007921 spray Substances 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 46
- 239000003546 flue gas Substances 0.000 abstract description 44
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005457 optimization Methods 0.000 abstract description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 44
- 238000005516 engineering process Methods 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 4
- 238000010531 catalytic reduction reaction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000031709 bromination Effects 0.000 description 2
- 238000005893 bromination reaction Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses one kind to be used for gas internal-combustion engine fume high-temperature type denitrating system, including gas internal-combustion engine smoke outlet, ammonia generator, SCR reactor, catalyst, lithium bromide equipment, chimney, urea solution tank, compressed air cylinder, urea liquid pipe, compressed air hose, spray gun and flue.Arrange an ammonia generator, including ammonia generator inner wall, first mention effect ring, the first flow-disturbing cone, second mention effect ring, third mentions effect ring and the second flow-disturbing cone.The energy saving of system, efficiency is higher, ammonia is prepared by one ammonia generator of arrangement, and the ammonia conversion ratio of urea is improved by the optimization design to ammonia generator structure, take layout design ammonia generator accessed in the flue between gas internal-combustion engine exhanst gas outlet and SCR reactor inlet, the occupied space of equipment for preparing ammonia is saved, gas internal-combustion engine flue gas denitrification system occupied area space is saved to reach, reduces the construction cost of gas internal-combustion engine Flue Gas Denitrification Engineering.
Description
Technical field
The present invention relates to one kind to be used for gas internal-combustion engine fume high-temperature type denitrating system, and it is de- to belong to gas internal-combustion engine flue gas
Nitre field.
Background technique
Nitrogen oxides is one of main atmosphere pollution, and nitrogen oxides not only stimulates the respiratory system of people, damages dynamic plant
Object destroys ozone layer, and is also to cause one of greenhouse effects, acid rain and photochemically reactive main matter.Combustion gas internal combustion
Machine the features such as because of its flexible, efficient, low row, can realize the ladder of the energy by way of hot and cold, electric three kinds of energy joint supplies
Grade utilizes, and is widely used in energy intensive facility, such as municipal administration, industrial park, commercial real estate, building, hospital and school.
Special application is also that the qualified discharge of nitrogen oxides among gas internal-combustion engine flue gas proposes higher requirement.
Nitrogen oxides reduces draining technology scheme and mainly has at present: (1) low-NO_x combustion technology is controlled in combustion
The generation of nitrogen oxides processed is primarily adapted for use in large coal-fired boiler etc.；Low nitrogen oxide burning technology can only reduce nitrogen oxides
The 30~50% of discharge value；(2) SCR technology (SCR, Selective Catalytic Reduction), it is main
It is used for large coal-fired boiler, is the mainstream applications technology in current China's gas denitrifying technology；(3) selective non-catalytic is also
Former technology (SNCR, Selective Non-Catalytic Reduction), is mainly used for the medium and small pot such as garbage burning factory
Furnace, technology maturation, but its efficiency are lower than SCR method；(4) SCR technology (SCR)+selective non-catalytic reduction skill
Art (SNCR), is mainly used for large coal-fired boiler low-nitrogen oxide discharging and place limited situation, is also relatively more suitable for old boiler
Transformation project.
Among the gas internal-combustion engine flue gas in the Treatment process of nitrogen oxides, selective catalytic reduction technology (SCR
Denitration technology) be current mainstream processing technique, principle is using reducing agent (such as NH3With CO etc.) it is logical in catalyst surface
It crosses catalytic action and nitrogen oxides is switched to harmless nitrogen, achieve the purpose that nitrogen oxides decrement discharge.Internal combustion engine exhanst gas outlet
Locate flue-gas temperature with it is essentially identical at SCR reactor inlet, generally 430~550 DEG C, reach as high as 600 DEG C, such flue gas
Under the conditions of need using high temperature catalyst, this catalyst Applicable temperature is 330~550 DEG C, is resistant to 600 DEG C in short-term.
Existing to be related in gas internal-combustion engine gas denitrifying technology scheme, patent No. CN108744970A discloses a kind of combustion
The combined denitration system of gas boiler and biogas internal combustion engine, though the technology is related to the combined denitration of gas fired-boiler Yu biogas internal combustion engine
Problem, but the technology does not mention the utilization to internal combustion engine and gas fired-boiler fume afterheat, is not directed to the generation of reducing agent ammonia yet
Problem；Patent No. CN106762064A discloses a kind of gas internal-combustion engine distributed energy denitration and noise reduction integrated apparatus, though
It is related to the utilization of gas internal-combustion engine waste heat, but the technology is not directed to the generation problem of reducing agent ammonia.Two technical solutions are equal above
It is not directed to the generation problem of the reducing agent ammonia of gas internal-combustion engine denitration.
CN108744970A and CN106762064A is respectively used to the denitration of gas internal-combustion engine, in CN108744970A simultaneously
Not set waste heat boiler, lithium bromide equipment and heat exchanger, efficiency is low, can not achieve while cooling supply and heat supply, and cannot be real
Existing energy conservation.For CN106762064A using distributed frame, function is relatively simple, while being also not directed to ammonia and generating phase
Close equipment.
To solve the problems, such as required reducing agent ammonia in gas internal-combustion engine denitrating flue gas and gas internal-combustion engine flue gas denitrification system
The generation problem of gas, the invention proposes one kind to be used for gas internal-combustion engine fume high-temperature type denitrating system, which uses bromination
Lithium equipment and heat exchanger can not only realize while cooling supply and heat supply, but also more energy efficient, and efficiency is higher, by gas internal-combustion engine
An ammonia generator is arranged between exhanst gas outlet and the flue of SCR reactor inlet to prepare ammonia, and by generating to ammonia
The optimization design of device structure improves the ammonia conversion ratio of urea, takes and ammonia generator access gas internal-combustion engine flue gas
The layout design in flue between mouth and SCR reactor inlet, saves the occupied space of equipment for preparing ammonia, thus
Reach and save gas internal-combustion engine flue gas denitrification system occupied area space, reduces the construction of gas internal-combustion engine Flue Gas Denitrification Engineering
Cost.
Summary of the invention
It is a primary object of the present invention to solve the problems, such as gas internal-combustion engine denitrating flue gas and gas internal-combustion engine denitrating flue gas system
The generation problem of required reducing agent ammonia in system.
To achieve the above object, the technical solution adopted by the present invention is a kind of de- for gas internal-combustion engine fume high-temperature type
Nitre system, including gas internal-combustion engine smoke outlet 1, ammonia generator 2, SCR reactor 3, catalyst 4, lithium bromide equipment 5, chimney
6, urea solution tank 7, compressed air cylinder 8, urea liquid pipe 9, compressed air hose 10, spray gun 11 and flue 12.
Gas internal-combustion engine smoke outlet 1 is connect by flue 12 with ammonia generator 2；Ammonia generator 2 by flue 12 with
SCR reactor 3 connects；Catalyst 4 is installed in SCR reactor 3；SCR reactor 3 is connected by flue 12 and lithium bromide equipment 5
It connects；Lithium bromide equipment 5 is connect by flue 12 with chimney 6.
Urea solution tank 7 is connect by urea liquid pipe 9 with spray gun 11；Compressed air cylinder 8 by compressed air hose 10 with
Spray gun 11 connects；Spray gun 11 is along vertical axial insertion ammonia generator 2.
Further, it arranges an ammonia generator 2, including ammonia generator inner wall 2-1, first mentions effect ring 2-2, first disturbs
Flow cone 2-3, second mention and imitate ring 2-4, third mentions effect ring 2-5 and the second flow-disturbing cone 2-6；Ammonia generator inner wall 2-1 is cylinder
Shape；First section for mentioning effect ring 2-2 is oblique fan-shaped surface, is connect by support construction with ammonia generator inner wall 2-1；Second mentions
The section that effect ring 2-4 and third mention effect ring 2-5 is that oblique sector is individually fixed in ammonia generator inner wall 2-1, and the first flow-disturbing bores 2-
3 and second flow-disturbing cone 2-6 be conical inclined surface, connect by support construction with ammonia generator inner wall 2-1；First proposes effect
Ring 2-2, the first flow-disturbing cone 2-3, second mention and imitate ring 2-4, third mentions effect ring 2-5 and the second flow-disturbing cone 2-6 is along ammonia generator 2
Axis direction sequentially lay.
The catalyst 4 is high temperature catalyst, and the high temperature range is 330~550 DEG C, is resistant to 600 DEG C in short-term.
Compared with prior art, the present invention has the advantages that.
The invention proposes one kind to be used for gas internal-combustion engine fume high-temperature type denitrating system, which is set using lithium bromide
Standby and heat exchanger can not only realize while cooling supply and heat supply, but also more energy efficient, and efficiency is higher, by gas internal-combustion engine flue gas
An ammonia generator is arranged to prepare ammonia between outlet and the flue of SCR reactor inlet, and by ammonia generator knot
The optimization design of structure improves the ammonia conversion ratio of urea, take by ammonia generator access gas internal-combustion engine exhanst gas outlet with
The layout design in flue between SCR reactor inlet saves the occupied space of equipment for preparing ammonia, to reach
Gas internal-combustion engine flue gas denitrification system occupied area space is saved, the construction cost of gas internal-combustion engine Flue Gas Denitrification Engineering is reduced.
Detailed description of the invention
Fig. 1 one kind is used for gas internal-combustion engine fume high-temperature type denitrating system structural schematic diagram.
In figure: 1, gas fired-boiler smoke outlet, 2, ammonia generator, 3, SCR reactor, 4, catalyst, 5, lithium bromide sets
It is standby, 6, chimney, 7, urea solution tank, 8, compressed air cylinder, 9, urea liquid pipe, 10, compressed air hose, 11, spray gun, 12, cigarette
Road.
Fig. 2 ammonia generator structural schematic diagram.
In figure: 2-1, ammonia generator inner wall, 2-2, first mention effect ring, and 2-3, the first flow-disturbing cone, 2-4, second propose effect
Ring, 2-5, third mention effect ring, 2-6, the second flow-disturbing cone.
A kind of tail portion increase heat exchanger of Fig. 3 is used for gas internal-combustion engine fume high-temperature type denitrating system structural schematic diagram.
Specific embodiment one
Below in conjunction with figure, by taking certain distributed busbar protection 4.4MW gas internal-combustion engine unit flue gas denitrification system as an example, to this
Invention is described further.
Certain distributed busbar protection 4.4MW gas internal-combustion engine unit SCR flue gas denitrification system, such as Fig. 1 and Fig. 2, combustion gas internal combustion
Flue-gas temperature is 430~550 DEG C at machine smoke outlet 1, reaches as high as 600 DEG C, generated output is 4.4MW, in gas internal-combustion engine
Exhaust gas volumn is dry state 19888Nm when rate of load condensate is 100%3/ h, in standard state, butt 5%O2Under the conditions of NOxIt is 500mg/
Nm3；The flue gas exit temperature of lithium bromide equipment 5 is 145 DEG C；4 preference temperature scope of catalyst is 330~550 DEG C.
Flue gas is discharged from gas internal-combustion engine smoke outlet 1, and temperature is 430~550 DEG C, and it is raw to enter ammonia by flue 12
It grows up to be a useful person 2, is mixed with the ammonia of the decomposed generation of urea liquid, the flue gas for being mixed with ammonia enters SCR reactor 3 through flue 12, this
Locating smoke temperature is about 430~550 DEG C, the nitrogen oxides on the surface for the catalyst 4 being mounted in SCR reactor 3, in flue gas
It being reacted under the effect of the catalyst with ammonia and generates harmless nitrogen, gaseous mixture is from 3 exit of SCR reactor, through flue 12,
Smoke temperature is about 430~550 DEG C at this time, into lithium bromide equipment 16 after temperature be reduced to 145 DEG C, then emptied by chimney 6.
The urea liquid that concentration is 30~50% in urea solution tank 7 enters spray gun 11, compression by urea liquid pipe 9
The compressed air that pressure is 0.3~0.8 kilogram in air tank 8 enters spray gun 11,11 vertical axis of spray gun by compressed air hose 10
To insertion ammonia generator 2, urea liquid is atomized in ammonia generator 2 under the action of 11 nozzle of compressed air and spray gun,
Such as Fig. 2, three effects for mentioning effect ring can be such that the urea microlayer model after atomization is sufficiently mixed with flue gas, mixed velocity of flue gas
It improves to be accelerated and rushes at two flow-disturbings cones, the effect of two flow-disturbings cone can make mixed flue gas form reflux, and extension urea is micro-
Drop generates the time of ammonia in ammonia generator 2, the flue-gas temperature in ammonia generator 2 of the urea microlayer model after atomization
It is decomposed under the conditions of 430~550 DEG C and generates ammonia, urea is improved by the Optimal Structure Designing to such as Fig. 2 of ammonia generator 2
Ammonia conversion ratio.
Ammonia generated enters SCR reactor 3 with flue gas, and the nitrogen oxides in flue gas is being catalyzed with generated ammonia
The surface of agent 4 carries out catalysis reaction and generates nitrogen, 3 exit NO of SCR reactorxIn standard state, butt 5%O2It is under condition concentration
30mg/Nm3。
Specific embodiment two
Below in conjunction with figure, by taking certain distributed busbar protection 4.4MW gas internal-combustion engine unit flue gas denitrification system as an example, to this
Invention is described further.
Certain distributed busbar protection 4.4MW gas internal-combustion engine unit SCR flue gas denitrification system, such as Fig. 2 and Fig. 3, combustion gas internal combustion
Flue-gas temperature is 430~550 DEG C at machine smoke outlet 1, reaches as high as 600 DEG C, generated output is 4.4MW, in gas internal-combustion engine
Exhaust gas volumn is dry state 19888Nm when rate of load condensate is 100%3/ h, in standard state, butt 5%O2Under the conditions of NOxIt is 500mg/
Nm3；The flue gas exit temperature of lithium bromide equipment 5 is 145 DEG C；4 preference temperature scope of catalyst is 320~450 DEG C；In bromination
Heat exchanger 13 is added between lithium equipment 5 and chimney 6.
Flue gas is discharged from gas internal-combustion engine smoke outlet 1, and temperature is 430~550 DEG C, and it is raw to enter ammonia by flue 12
It grows up to be a useful person 2, is mixed with the ammonia of the decomposed generation of urea liquid, the flue gas for being mixed with ammonia enters SCR reactor 3 through flue 12, this
Locating smoke temperature is about 430~550 DEG C, the nitrogen oxides on the surface for the catalyst 4 being mounted in SCR reactor 3, in flue gas
It being reacted under the effect of the catalyst with ammonia and generates harmless nitrogen, gaseous mixture is from 3 exit of SCR reactor, through flue 12,
Smoke temperature is about 430~550 DEG C at this time, into lithium bromide equipment 16 after temperature be reduced to 145 DEG C, pass through heat exchanger 13 exchange heat after temperature
Degree is reduced to 72 DEG C, is then emptied by chimney 6.
It is de- for gas internal-combustion engine fume high-temperature type that 13 latter of heat exchanger is added between lithium bromide equipment 5 and chimney 6
The efficiency of nitre system is higher.
The urea liquid that concentration is 30~50% in urea solution tank 7 enters spray gun 11, compression by urea liquid pipe 9
The compressed air that pressure is 0.3~0.8 kilogram in air tank 8 enters spray gun 11,11 vertical axis of spray gun by compressed air hose 10
To insertion ammonia generator 2, urea liquid is atomized in ammonia generator 2 under the action of 11 nozzle of compressed air and spray gun,
Such as Fig. 2, three effects for mentioning effect ring can be such that the urea microlayer model after atomization is sufficiently mixed with flue gas, mixed velocity of flue gas
It improves to be accelerated and rushes at two flow-disturbings cones, the effect of two flow-disturbings cone can make mixed flue gas form reflux, and extension urea is micro-
Drop generates the time of ammonia in ammonia generator 2, the flue-gas temperature in ammonia generator 2 of the urea microlayer model after atomization
It is decomposed under the conditions of 400 DEG C and generates ammonia, the ammonia of urea is improved by the Optimal Structure Designing to such as Fig. 2 of ammonia generator 2
Conversion ratio.
Ammonia generated enters SCR reactor 3 with flue gas, and the nitrogen oxides in flue gas is being catalyzed with generated ammonia
The surface of agent 4 carries out catalysis reaction and generates nitrogen, 3 exit NO of SCR reactorxIn standard state, butt 5%O2It is under condition concentration
30mg/Nm3。
The invention proposes one kind to be used for gas internal-combustion engine fume high-temperature type denitrating system, which is set using lithium bromide
Standby and heat exchanger can not only realize while cooling supply and heat supply, but also more energy efficient, and efficiency is higher, by gas internal-combustion engine flue gas
An ammonia generator is arranged to prepare ammonia between outlet and the flue of SCR reactor inlet, and by ammonia generator knot
The optimization design of structure improves the ammonia conversion ratio of urea, take by ammonia generator access gas internal-combustion engine exhanst gas outlet with
The layout design in flue between SCR reactor inlet saves the occupied space of equipment for preparing ammonia, to reach
Save gas internal-combustion engine flue gas denitrification system occupied area and space, reduce the construction of gas internal-combustion engine Flue Gas Denitrification Engineering at
This.
Claims (2)
1. one kind is used for gas internal-combustion engine fume high-temperature type denitrating system, it is characterised in that: including gas internal-combustion engine smoke outlet
(1), ammonia generator (2), SCR reactor (3), catalyst (4), lithium bromide equipment (5), chimney (6), urea solution tank (7),
Compressed air cylinder (8), urea liquid pipe (9), compressed air hose (10), spray gun (11) and flue (12)；
Gas internal-combustion engine smoke outlet (1) is connect by flue (12) with ammonia generator (2)；Ammonia generator (2) passes through flue
(12) it is connect with SCR reactor (3)；Catalyst (4) is installed in SCR reactor (3)；SCR reactor (3) passes through flue (12)
It is connect with lithium bromide equipment (5)；Lithium bromide equipment (5) is connect by flue (12) with chimney (6)；
Urea solution tank (7) is connect by urea liquid pipe (9) with spray gun (11)；Compressed air cylinder (8) passes through compressed air hose
(10) it is connect with spray gun (11)；Spray gun (11) is along vertical axial insertion ammonia generator (2).
2. according to claim 1 a kind of for gas internal-combustion engine fume high-temperature type denitrating system, it is characterised in that: arrangement
One ammonia generator (2), including ammonia generator inner wall (2-1), first mention effect ring (2-2), the first flow-disturbing cone (2-3), second
Propose effect ring (2-4), third proposes effect ring (2-5) and the second flow-disturbing cone (2-6)；Ammonia generator inner wall (2-1) is cylindric；The
One section for proposing effect ring (2-2) is oblique fan-shaped surface, is connect by support construction with ammonia generator inner wall (2-1)；Second proposes effect
The section that ring (2-4) and third propose effect ring (2-5) is that oblique sector is individually fixed in ammonia generator inner wall (2-1), the first flow-disturbing
Boring (2-3) and the second flow-disturbing cone (2-6) is conical inclined surface, is connect by support construction with ammonia generator inner wall (2-1)；
First proposes effect ring (2-2), the first flow-disturbing cone (2-3), second mentions that effect ring (2-4), third propose effect ring (2-5) and the second flow-disturbing is bored
(2-6) is sequentially laid along the axis direction of ammonia generator (2).
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| CN201910040833.3A CN109569297B (en) | 2019-01-16 | 2019-01-16 | High-temperature type denitration system for flue gas of gas internal combustion engine |
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| CN209406067U (en) * | 2019-01-16 | 2019-09-20 | 北京工大环能科技有限公司 | One kind being used for gas internal-combustion engine fume high-temperature type denitrating system |
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|---|---|---|---|---|
| JP2002068735A (en) * | 2000-08-24 | 2002-03-08 | Mitsubishi Heavy Ind Ltd | Method for producing ammonia and method for treating exhaust gas |
| CN104190252A (en) * | 2014-08-20 | 2014-12-10 | 浙江大学 | Multistage pyrolysis coupled flue gas denitrification system with independent SCR (Selective Catalytic Reduction) ammonia-supplementing spray guns |
| CN204933221U (en) * | 2015-07-28 | 2016-01-06 | 中国华电工程(集团)有限公司 | A kind of denitrating flue gas treatment system in conjunction with distributed system |
| CN107261837A (en) * | 2017-07-27 | 2017-10-20 | 中节环立为（武汉）能源技术有限公司 | It is a kind of to quote denitrification apparatus and technique that high-temperature flue gas carries out urea pyrolysis ammonia |
| CN209406067U (en) * | 2019-01-16 | 2019-09-20 | 北京工大环能科技有限公司 | One kind being used for gas internal-combustion engine fume high-temperature type denitrating system |
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| CN109569297B (en) | 2024-04-30 |
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