CN106677868A - Tail gas purification and heat recovery combined system for diesel engine - Google Patents
Tail gas purification and heat recovery combined system for diesel engine Download PDFInfo
- Publication number
- CN106677868A CN106677868A CN201611059385.4A CN201611059385A CN106677868A CN 106677868 A CN106677868 A CN 106677868A CN 201611059385 A CN201611059385 A CN 201611059385A CN 106677868 A CN106677868 A CN 106677868A
- Authority
- CN
- China
- Prior art keywords
- heat
- diesel engine
- weight portions
- exhaust outlet
- rare earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000746 purification Methods 0.000 title abstract description 12
- 238000011084 recovery Methods 0.000 title abstract 5
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 18
- 230000003197 catalytic effect Effects 0.000 claims abstract description 14
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 11
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 47
- 239000007789 gas Substances 0.000 claims description 35
- 239000006096 absorbing agent Substances 0.000 claims description 30
- 229910052723 transition metal Inorganic materials 0.000 claims description 29
- 239000002905 metal composite material Substances 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 229910003158 γ-Al2O3 Inorganic materials 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- 229910000510 noble metal Inorganic materials 0.000 claims description 13
- 239000002250 absorbent Substances 0.000 claims description 11
- 230000002745 absorbent Effects 0.000 claims description 11
- 239000004202 carbamide Substances 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 10
- 210000003850 cellular structure Anatomy 0.000 claims description 10
- 229910052763 palladium Inorganic materials 0.000 claims description 10
- 229910052703 rhodium Inorganic materials 0.000 claims description 10
- 229910002637 Pr6O11 Inorganic materials 0.000 claims description 9
- 206010022000 influenza Diseases 0.000 claims description 9
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium oxide Inorganic materials [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000011897 real-time detection Methods 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 230000001413 cellular effect Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000000638 solvent extraction Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- BYFGZMCJNACEKR-UHFFFAOYSA-N Al2O Inorganic materials [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N monoethanolamine hydrochloride Natural products NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- -1 ethanolamine compound Chemical class 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- ZJWFWQDZKCLJTO-UHFFFAOYSA-N benzene pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C34.C3=CC=C4C=CC2=CC=CC1=CC=C3C4=C21.C2=CC=CC=C2 ZJWFWQDZKCLJTO-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- RCFVMJKOEJFGTM-UHFFFAOYSA-N cerium zirconium Chemical compound [Zr].[Ce] RCFVMJKOEJFGTM-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2250/00—Combinations of different methods of purification
- F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/04—Sulfur or sulfur oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/10—Carbon or carbon oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/12—Hydrocarbons
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Toxicology (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a tail gas purification and heat recovery combined system for a diesel engine. The tail gas purification and heat recovery combined system comprises a catalytic oxidization device, a desulfurizer, a heat energy recovery device and a denitration device which are sequentially arranged in the tail gas flowing direction. The catalytic oxidization device comprises a first shell and a honeycomb-shaped ceramic carrier arranged in the first shell. The cellular ceramic carrier comprises a honeycomb-shaped body provided with a plurality of air channels distributed in parallel, and baffles which are arranged between the adjacent air channels in a staggered mode and fixed into the corresponding air channels. A cordierite filtering body is arranged on the portion, used for partitioning every two adjacent air channels, inside the honeycomb-shaped body, and provided with a catalytic coating. By adoption of the tail gas purification and heat recovery combined system for the diesel engine, the tail gas of the diesel engine can be effectively purified; and meanwhile, the heat energy can be recycled, and loss of the heat energy is saved.
Description
Technical field
The present invention relates to tail gas clean-up field, more particularly to a kind of diesel engine vent gas purification and recuperation of heat hybrid system.
Background technology
Diesel engine with its power it is big, the thermal efficiency is high the advantages of, and be widely used in communications and transportation, engineering and agriculture and forestry machinery
Deng field.But diesel engine discharges pollutants more due to it, and general diesel exhaust hazardous emission level is in following scope：
CO concentration 50-5000ppm；NOx concentration：Direct injection 100-3000ppm, cellular-type 100-1500ppm；HC concentration 10-
1500ppm, smoke intensity 0.2-2.0 Bosch unit, particle concentration 0.01-0.8g/m3, SO2Concentration 0-200ppm, concentration of aldehyde species 10-
200ppm, benzene pyrene 0.5-30 micrograms/m3.The harmful substances such as carbon dioxide, nitrogen oxides and flue dust, if directly discharged, these
Pollutant greatly pollutes the environment of our life, the health of our mankind is constituted and is greatly threatened, for this, pole
The earth governs the further development of diesel engine.Additionally, the row such as industrial high-power diesel engine, diesel-driven generator and power-equipment
The flue gas for going out contains substantial amounts of heat, and its value accounts for 18% or so of fuel oil total amount of heat, and the flue-gas temperature of discharge may be up to 700 and take the photograph
More than family name's degree, the economy that the waste of this portion of energy causes diesel engine overall decreases, if carried out to this portion of energy
Recycle, the economy of diesel engine will be greatly enhanced, while huge economic worth can also be produced.Flue gas is excluded in addition
In the harmful substance such as the carbon dioxide, nitrogen oxides and the flue dust that contain (such as：Soot particulate, hydro carbons, CO and NOx etc.), if
Directly discharge, it will significant damage is produced to individual human and environment.The further development and application of diesel engine are also govern simultaneously.
Dual fuel of diesel engine is always in recent years one of focus of concern, is also Environmental Engineering and internal combustion engine
In very challenging problem, the further genralrlization popularization and application of development and diesel engine to diesel engine has great
Meaning.
The content of the invention
In view of this, it is an object of the invention to provide a kind of diesel engine vent gas are purified and recuperation of heat hybrid system, can
The purification of diesel engine vent gas is effectively realized, while can be recycled heat energy, saving heat energy loss.
The diesel engine vent gas purification of the present invention and recuperation of heat hybrid system, including urging for setting gradually along exhaust gas flow direction
Change oxidation unit, desulfurizer, heat-energy recovering apparatus and denitrification apparatus；The catalytic oxidizing equipment includes housing I and is located at shell
Cellular structure ceramic carrier in body I, the cellular structure ceramic carrier includes the honeycomb of the multiple air flues with parallel side-by-side arrangement
The baffle plate that dislocation type is fixed in each air flue between body and correspondence two air flues of arbitrary neighborhood；Any phase is separated in honeycomb body
Part between adjacent two air flues is provided with cordierite bodies；The cordierite bodies are provided with catalyst coat.
Further, the catalyst coat includes γ-Al2O3, rare earth-transition metal composite oxides and noble metal active
Component；The noble metal active component includes Pt, Rh and Pd；The catalyst coat includes being attached to the cordierite bodies
On γ-Al2O3Coating, is attached to γ-Al2O3Pt coatings on coating surface, be attached to Pd, Rh, γ in Pt coatings-
Al2O3And rare earth-transition metal composite oxides mixed coating, it is attached to Pd, Rh, γ-Al2O3And rare earth-transition metal is compound
Rh, γ-Al on oxide mixed coating2O3, rare earth-transition metal composite oxides mixed coating.
Further, the composition and content of the noble metal active component be Pt15-25 weight portions, Rh4-6 weight portions and
Pd15-20 weight portions；
The rare earth-transition metal composite oxides include the ZrO of 30-70 weight portions2, the CeO of 30-80 weight portions2, 15-
The La of 25 weight portions2O3、Y2O3、Pr6O11、Nd2O3In one or more；
Pd, Rh, γ-Al2O3And the rare earth-transition metal in rare earth-transition metal composite oxides mixed coating is answered
Closing oxide includes the ZrO of 50-60 weight portions2, the CeO of 25-35 weight portions2, the La of 15-25 weight portions2O3、Y2O3、Pr6O11、
Nd2O3In one or more；
Rh, γ-Al2O3, rare earth-transition metal composite oxygen in rare earth-transition metal composite oxides mixed coating
Compound includes the ZrO of 25-75 weight portions2, the CeO of 25~35 weight portions2, the La of 20-30 weight portions2O3、Y2O3、Pr6O11、Nd2O3
In one or more.
Further, the housing I is provided with the air inlet I positioned at lower end and the exhaust outlet I positioned at upper end, the cellular pottery
Ceramic carrier is located between air inlet I and exhaust outlet I；The desulfurizer includes housing II and the solid-like that is located in housing II
Soda absorber layer；The housing II is provided with the air inlet II positioned at upper end and the exhaust outlet II positioned at lower end, the air inlet
II is connected with exhaust outlet I by breather pipe I, and the soda absorber layer is located between air inlet II and exhaust outlet II.
Further, be provided with multilayer soda absorber layer in the housing II from top to bottom, each soda absorber layer by
Upper wire netting and the lower wire netting below the soda absorber layer above the soda absorber layer is gripped, and
The mesh of the upper wire netting of the same soda absorber layer of correspondence is dislocatedly distributed with the mesh of lower wire netting；Arbitrary soda absorber layer
The upper wire netting of lower wire netting and adjacent soda absorber layer be in close contact.
Further, the absorbent in the soda absorber layer includes the raw material components of following weight portion：Lime stone 35-42
Part, sodium carbonate 15-18 parts, ethanolamine compound 6-10 parts, basic aluminum sulfate 4-8 parts, calcium oxide 0.5-2.5 parts, magnesia 6-8
Part.
Further, the heat-energy recovering apparatus include First Heat Exchanger, and the First Heat Exchanger includes shell and heat exchanger tube,
It is provided with heat exchanging chamber inside shell, heat exchanger tube is serpentine-like and is respectively arranged at two ends with water inlet and delivery port；The heat exchanger tube is applied in
In heat exchanging chamber, and through the top end face of the shell, the two ends for making heat exchanger tube communicate respectively with the outside of shell；The shell sets
There are the air inlet III positioned at left end and the exhaust outlet III positioned at right-hand member, the air inlet III passes through the phase of breather pipe II with exhaust outlet II
Connection.
Further, the heat-energy recovering apparatus also include the second heat exchanger；Second heat exchanger include dividing plate and every
Not connected epicoele and cavity of resorption that plate is divided into, the epicoele and cavity of resorption be arranged in parallel；It is fixed on the dividing plate that heat pipe is housed,
The heat pipe is the internal graphite-pipe filled with the sealing of working medium two ends, and its two ends is in respectively in epicoele and cavity of resorption, outside the heat pipe
Fin is installed on wall；The left and right of the epicoele is respectively arranged at two ends with inlet and liquid outlet, the left and right two ends point of the cavity of resorption
Air inlet IV and exhaust outlet IV are not provided with, the air inlet IV is connected with exhaust outlet III.
Further, the denitrification apparatus are the urea liquid reaction tank for being provided with reaction chamber, the reaction chamber and exhaust outlet IV
It is connected by breather pipe III；The breather pipe III stretches into reaction chamber lower end so that tail gas is anti-with the urea liquid in reaction chamber
Should.
Further, the water inlet is provided with the first control valve for controlling discharge, and the inlet is provided with for controlling
Second control valve of flow of refrigeration fluids, is provided with for the temperature sensor of real-time detection EGT in the exhaust outlet IV；
The signal output part of the temperature sensor is connected with the signal input part of the controller of automatic control system, first control
The signal input part of valve, second control valve signal input part it is defeated with the first signal output part of controller, secondary signal respectively
Go out end to be connected.
Beneficial effects of the present invention：The diesel engine vent gas purification of the present invention and recuperation of heat hybrid system, have quaternary structure,
Catalytic oxidizing equipment is used to remove carbon granule and hydrocarbon, and desulfurizer is used to remove sulfur dioxide, heat-energy recovering apparatus
Heat energy is reclaimed, denitrification apparatus are used to remove oxynitrides such that it is able to effectively realize the purification of diesel engine vent gas, together
When heat energy can be recycled, saving heat energy loss.
Description of the drawings
With reference to the accompanying drawings and examples the invention will be further described：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is B-B sectional views in Fig. 2；
Fig. 4 is enlarged drawing at C in Fig. 1；
Fig. 5 be the present invention automatic control system to theory diagram.
Specific embodiment
As shown in Figures 1 to 4：The diesel engine vent gas purification of the present embodiment and recuperation of heat hybrid system, including along tail gas stream
Catalytic oxidizing equipment, desulfurizer, heat-energy recovering apparatus and denitrification apparatus that dynamic direction sets gradually；The catalytic oxidizing equipment
Including housing I 11 and the cellular structure ceramic carrier being located in housing I 11 12, the cellular structure ceramic carrier 12 is included with parallel
Dislocation type is fixed on each gas between the honeycomb ceramics 12a and correspondence two air flues 13 of arbitrary neighborhood of multiple air flues 13 of laid out in parallel
Baffle plate 14 in road 13；The part being separated in honeycomb ceramics 12a between the air flue 13 of arbitrary neighborhood two is provided with cordierite bodies 15；
The cordierite bodies 15 are provided with catalyst coat；Housing I 11 can be in cylinder；Cellular structure ceramic carrier 12 has three-dimensional
Three-dimensional filtration, its filter area can be high into the growth of geometry multiple, filter efficiency relative to plane filter material；14, baffle plate
In one end of air flue 13, " dislocation type " i.e. in two adjacent air flues 13, baffle plate 14 is located at respectively the two ends of two air flues 13；
So, semi-enclosed air flue 13 can receive certain dust, therefore its dust containing capacity is significantly carried than traditional plane filter material
Height, can significantly extend cleaning cycle, reduce frequency of maintenance；Baffle plate 14 can also block the circulation of the interior air-flow of corresponding air flue 13, because
The air-flow that this is entered in honeycomb ceramics 12a is under the barrier effect of baffle plate 14 through the cordierite bodies adjacent two air flue 13
15 enter adjacent air flue 13, and realization is effectively filtered to whole air-flows, and purification efficiency is high, and in air flue 13 multiple gears can be arranged
Plate 14, is filtered wall of the air-flow repeatedly between adjacent air flue 13, using diffusion, is intercepted and inertial collision mechanism,
By particulate deposits within cellular structure ceramic carrier 12；Catalytic oxidizing equipment, desulfurizer, heat-energy recovering apparatus and denitrification apparatus
Can be linked together by flange arrangement, be easily installed and dismantle, per part autonomous working efficiency high, cooperation is capable of achieving phase
Mutually promote；Catalytic oxidizing equipment is used to remove carbon granule and hydrocarbon, and desulfurizer is used to remove sulfur dioxide, and heat energy is returned
Receiving apparatus are reclaimed heat energy, and denitrification apparatus are used to remove oxynitrides such that it is able to effectively realize diesel engine vent gas
Purification, while can be recycled heat energy, saving heat energy loss.
In the present embodiment, the catalyst coat includes γ-Al2O3, rare earth-transition metal composite oxides and noble metal
Active component；The noble metal active component includes Pt, Rh and Pd；The catalyst coat includes being attached to the cordierite mistake
γ-Al on filter body 152O3Coating, is attached to γ-Al2O3Pt coatings on coating surface, be attached to Pd in Pt coatings, Rh,
γ-Al2O3And rare earth-transition metal composite oxides mixed coating, it is attached to Pd, Rh, γ-Al2O3And rare earth-transition metal
Rh, γ-Al on composite oxides mixed coating2O3, rare earth-transition metal composite oxides mixed coating；γ-Al2O 3For
Noble metal active component provides tack of the high specific surface area and enhancing to carrier, it is therefore desirable to the γ-Al2O 3Ratio table
Area ＞ 280m2/ g, the γ-Al2O 3The thickness of coating is preferably between 20~40 μm；Rare earth-transition metal combined oxidation
Thing is used as hydrogen-storing material, the preferably composite oxides containing cerium zirconium；The composition and content of the noble metal active component is Pt15-
25 weight portions, Rh4-6 weight portions and Pd15-20 weight portions；The rare earth-transition metal composite oxides include 30-70 weight
The ZrO of part2, the CeO of 30-80 weight portions2, the La of 15-25 weight portions2O3、Y2O3、Pr6O11、Nd2O3In one or more；Institute
State Pd, Rh, γ-Al2O3And the rare earth-transition metal composite oxides bag in rare earth-transition metal composite oxides mixed coating
Include the ZrO of 50-60 weight portions2, the CeO of 25-35 weight portions2, the La of 15-25 weight portions2O3、Y2O3、Pr6O11、Nd2O3In one
Plant or several；Rh, γ-Al2O3, the rare earth-transition metal in rare earth-transition metal composite oxides mixed coating is combined
Oxide includes the ZrO of 25-75 weight portions2, the CeO of 25~35 weight portions2, the La of 20-30 weight portions2O3、Y2O3、Pr6O11、
Nd2O3In one or more；The catalyst is by cellular ceramic substrate, γ-Al2O 3Property selected, can make
Noble metal active component keeps high dispersion and keeps stable catalytic effect, further by noble metal active component
The Reasonable Regulation And Control of composition and ratio, coordinates rare earth-transition metal composite oxides to carry out the combination of different coating, can meet storage
Oxygen ability, also can guarantee that the high activity of catalytic reduction of nitrogen oxygen compound and the high-temperature aging resisting ability of noble metal active component, reach
To more preferable catalytic effect, so that high standard emission request can be met using the product of the catalyst.
In the present embodiment, the housing I 11 is provided with the 11a of air inlet I positioned at the lower end and 11b of exhaust outlet I positioned at upper end,
The cellular structure ceramic carrier 12 is located between the 11a of air inlet I and the 11b of exhaust outlet I；The desulfurizer include housing II 21 and
The soda absorber layer 22 of the solid-like being located in housing II 21；The housing II 21 is provided with the 21a of air inlet II positioned at upper end
And positioned at the 21b of exhaust outlet II of lower end, the 21a of the air inlet II is connected with the 11b of exhaust outlet I by breather pipe I 81, the sodium
Alkali absorption oxidant layer 22 is located between the 21a of air inlet II and the 21b of exhaust outlet II；The exhaust port 9 of the 11a of air inlet I and diesel engine
It is connected；Soda absorber layer 22 mainly adopts Na2CO3As the SO in initial absorption agent, with tail gas2And H2There is chemical reaction in O
Generate Na2SO3, then again with SO2Reaction generates NaHSO3；With sodium alkali, using solid absorbent, the source of alkali limits little,
It is readily transported, stores, and because cation is nonvolatile, there is no volatilization of the absorbent during washing gas,
Ammonium mist problem is produced, thus alkaline consumption is little；Simultaneously as liquid-absorbant can absorb the heat of tail gas, so as to reduce follow-up tail gas
The efficiency of recuperation of heat, and this problem is avoided using the soda absorbent of solid, compared with the method using potash, soda
Than potash abundance and cheap many of price；Soda absorbent absorbability is big, and absorbent consumption is few, can obtain preferably
Treatment effect.
In the present embodiment, multilayer soda absorber layer 22 is provided with the housing II 21 from top to bottom, each soda absorbs
Oxidant layer 22 is by the upper wire netting 23 positioned at the top of soda absorber layer 22 and under the lower section of soda absorber layer 22
Wire netting 24 is gripped, and corresponds to the mesh of the upper wire netting 23 of same soda absorber layer 22 and the mesh of lower wire netting 24
It is dislocatedly distributed；The lower wire netting 24 of arbitrary soda absorber layer 22 closely connects with the upper wire netting 23 of adjacent soda absorber layer 22
Touch；Soda absorber layer 22 for example can be 5-8 layers；Housing II 21 is cylindrical, and soda absorber layer 22 is perpendicular to housing II 21
Axis arrange；Soda absorber layer 22 is fixed between wire netting 23 and lower wire netting 24, realizes effectively fixing, and is prevented
The soda absorbent of solid-like comes off；In the present embodiment, the absorbent in the soda absorber layer 22 may include following weight
The raw material components of part：Lime stone 35-42 parts, sodium carbonate 15-18 parts, ethanolamine compound 6-10 parts, basic aluminum sulfate 4-8 parts,
Calcium oxide 0.5-2.5 parts, magnesia 6-8 parts.Preferably, the component can be 38 parts of lime stone, 16 parts of sodium carbonate, monoethanolamine chemical combination
8 parts of thing, 6 parts of basic aluminum sulfate, 1.5 parts of calcium oxide, 7 parts of magnesia.During manufacture, only each component need to be ground, granularity is less than
5mm, stirs；Lime stone, sodium carbonate are decomposed at high temperature calcium oxide and sodium oxide molybdena, both materials energy and sulphur
With reference to, become absorb sulfur main matter；Ethanolamine compound is reduced to corrosion of metal as corrosion inhibiter；Magnesia has
There is the property contained to sulphur-containing substance.The absorbent has surface-active, and catalytic oxidation desulfurization ability is strong, can contain sulphur thing
Matter.
In the present embodiment, the heat-energy recovering apparatus include First Heat Exchanger, the First Heat Exchanger include shell 31 and
Heat exchanger tube 32, is provided with heat exchanging chamber 33 inside shell 31, heat exchanger tube 32 is serpentine-like and is respectively arranged at two ends with water inlet 32a and delivery port
32b；The heat exchanger tube 32 is applied in heat exchanging chamber 33, and through the top end face of the shell 31, makes the two ends point of heat exchanger tube 32
Do not communicate with the outside of shell 31；The shell 31 is provided with the 31a of air inlet III positioned at left end and the exhaust outlet III positioned at right-hand member
31b, the 31a of the air inlet III are connected with the 21b of exhaust outlet II by breather pipe II 82；The snakelike heat exchange area of heat exchanger tube 32 compared with
Greatly, heat transfer effect is preferable；Some spoilers can be set in individual heat transfer coefficient, heat exchanging chamber 33 to improve, strengthen tail gas turbulent extent,
Tail gas is forced repeatedly to contact with heat exchanger tube 32.
In the present embodiment, the heat-energy recovering apparatus also include the second heat exchanger；Second heat exchanger includes dividing plate 41
And the not connected epicoele 42 that is divided into of dividing plate 41 and cavity of resorption 43, the epicoele 42 and cavity of resorption 43 be arranged in parallel；It is described every
Fixed on plate 41 that heat pipe 44 is housed, the heat pipe 44 is the internal graphite-pipe filled with the sealing of working medium two ends, and its two ends is in respectively
In epicoele 42 and cavity of resorption 43, wing 45 is installed on the outer wall of the heat pipe 44；The left and right of the epicoele 42 be respectively arranged at two ends with into
Liquid mouth 42a and liquid outlet 42b, the left and right of the cavity of resorption 43 is respectively arranged at two ends with the 43a of the air inlet IV and 43b of exhaust outlet IV, described
The 43a of air inlet IV is connected with the 31b of exhaust outlet III；Heat pipe 44 relies on phase-change heat transfer, therefore the internal thermal resistance very little of heat pipe 44, institute
So that the larger coefficient of overall heat transmission can be obtained with the less temperature difference；Graphite has a good thermal conductivity, and with good chemical stability,
Plasticity and thermal shock resistance, can acidproof, alkaline-resisting and organic solvent-resistant corrosion；Fin 45 can increase the area of heat exchange, be lifted
The effect of heat exchange.
In the present embodiment, the denitrification apparatus are the urea liquid reaction tank 51 for being provided with reaction chamber 52, the reaction chamber 52
It is connected by breather pipe III 83 with the 43b of exhaust outlet IV；The breather pipe III stretches into the lower end of reaction chamber 52 so that tail gas and reaction
Urea liquid reaction in chamber 52；The reaction temperature of urea liquid removes NO at 30 DEG C -40 DEG C from ureaxEfficiency can be high
Up to 99.95%, the temperature for carrying out waste gas after heat exchange has the temperature for adapting to therewith, so as to improve reaction efficiency；Urea is molten
Liquid is reducing agent, is fully reacted with waste gas in reaction tank, and the nitrogen oxides in waste gas forms nitrogen by redox reaction
And water；After the recycling through heat pipe 44 to heat energy from waste gas, tail gas is passed through in urea liquid both by breather pipe III
Generation redox reaction, generates nitrogen and water, and gas enters air.
In the present embodiment, the water inlet 32a is provided with the first control valve 61 for controlling discharge, and the inlet sets
There is the second control valve 62 for controlling cold fluid flow amount, be provided with for real-time detection EGT in the 43b of the exhaust outlet IV
Temperature sensor 63；The signal input of the signal output part of the temperature sensor 63 and the controller 64 of automatic control system
End be connected, it is described first control valve 61 signal input part, second control valve 62 signal input part respectively with controller 64
First signal output part, secondary signal output end are connected；Controller 64 is single-chip microcomputer；The first control control valve 62 of valve 61, second
It is automatically controlled valve arrangement；The temperature of waste gas at the 43b of 63 real-time detection exhaust outlet of temperature sensor IV, when temperature exceeds controller 64
During preset value, controller 64 sends the signal of increase flow to the first control control valve 62 of valve 61 and second, reduces useless with rapid
Temperature degree；When EGT is less than 64 preset value of controller, controller 64 is to the first control 62, valve of control of valve 61 and second
Go out to reduce the signal of flow, to improve EGT, make waste gas be suitable to be reacted in urea liquid reaction tank 51.
Finally illustrate, above example is only unrestricted to illustrate technical scheme, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of technical solution of the present invention, it all should cover at this
In the middle of the right of invention.
Claims (10)
1. a kind of diesel engine vent gas are purified and recuperation of heat hybrid system, it is characterised in that：Including setting successively along exhaust gas flow direction
Catalytic oxidizing equipment, desulfurizer, heat-energy recovering apparatus and the denitrification apparatus put；The catalytic oxidizing equipment include housing I and
The cellular structure ceramic carrier being located in housing I, the cellular structure ceramic carrier includes the multiple air flues with parallel side-by-side arrangement
Honeycomb ceramics and correspondence arbitrary neighborhood two air flues between the baffle plate that is fixed in each air flue of dislocation type；It is separated in honeycomb body
Part between the air flue of arbitrary neighborhood two is provided with cordierite bodies；The cordierite bodies are provided with catalyst coat.
2. diesel engine vent gas according to claim 1 are purified and recuperation of heat hybrid system, it is characterised in that：The catalyst
Coating includes γ-Al2O3, rare earth-transition metal composite oxides and noble metal active component；The noble metal active component bag
Include Pt, Rh and Pd；The catalyst coat includes the γ-Al being attached in the cordierite bodies2O3Coating, be attached to γ-
Al2O3Pt coatings on coating surface, Pd, the Rh, γ-Al being attached in Pt coatings2O3And rare earth-transition metal combined oxidation
Thing mixed coating, is attached to Pd, Rh, γ-Al2O3And Rh, the γ on rare earth-transition metal composite oxides mixed coating-
Al2O3, rare earth-transition metal composite oxides mixed coating.
3. diesel engine vent gas according to claim 2 are purified and recuperation of heat hybrid system, it is characterised in that：The noble metal
The composition and content of active component is Pt15-25 weight portions, Rh4-6 weight portions and Pd15-20 weight portions；
The rare earth-transition metal composite oxides include the ZrO of 30-70 weight portions2, the CeO of 30-80 weight portions2, 15-25 weights
The La of amount part2O3、Y2O3、Pr6O11、Nd2O3In one or more；
Pd, Rh, γ-Al2O3And the rare earth-transition metal composite oxygen in rare earth-transition metal composite oxides mixed coating
Compound includes the ZrO of 50-60 weight portions2, the CeO of 25-35 weight portions2, the La of 15-25 weight portions2O3、Y2O3、Pr6O11、Nd2O3
In one or more；
Rh, γ-Al2O3, rare earth-transition metal composite oxides in rare earth-transition metal composite oxides mixed coating
Including the ZrO of 25-75 weight portions2, the CeO of 25~35 weight portions2, the La of 20-30 weight portions2O3、Y2O3、Pr6O11、Nd2O3In
One or more.
4. diesel engine vent gas according to claim 1 are purified and recuperation of heat hybrid system, it is characterised in that：The housing I
The air inlet I positioned at lower end and the exhaust outlet I positioned at upper end are provided with, the cellular structure ceramic carrier is located at air inlet I with exhaust
Between mouth I；The desulfurizer includes the soda absorber layer of housing II and the solid-like being located in housing II；The housing II
The air inlet II positioned at upper end and the exhaust outlet II positioned at lower end are provided with, the air inlet II passes through the phase of breather pipe I with exhaust outlet I
Connection, the soda absorber layer is located between air inlet II and exhaust outlet II.
5. diesel engine vent gas according to claim 4 are purified and recuperation of heat hybrid system, it is characterised in that：The housing II
Multilayer soda absorber layer is inside provided with from top to bottom, and each soda absorber layer is by upper above the soda absorber layer
Wire netting and the lower wire netting below the soda absorber layer are gripped, and the upper gold of the same soda absorber layer of correspondence
The mesh of category net is dislocatedly distributed with the mesh of lower wire netting；The lower wire netting of arbitrary soda absorber layer and adjacent soda absorbent
The upper wire netting of layer is in close contact.
6. diesel engine vent gas according to claim 4 are purified and recuperation of heat hybrid system, it is characterised in that：The soda is inhaled
Receiving the absorbent in oxidant layer includes the raw material components of following weight portion：It is lime stone 35-42 parts, sodium carbonate 15-18 parts, ethanolaminated
Compound 6-10 parts, basic aluminum sulfate 4-8 parts, calcium oxide 0.5-2.5 parts, magnesia 6-8 parts.
7. diesel engine vent gas according to claim 5 are purified and recuperation of heat hybrid system, it is characterised in that：The heat energy is returned
Receiving apparatus include First Heat Exchanger, and the First Heat Exchanger includes shell and heat exchanger tube, heat exchanging chamber, heat exchanger tube are provided with inside shell
It is serpentine-like and be respectively arranged at two ends with water inlet and delivery port；The heat exchanger tube is applied in heat exchanging chamber, and through the shell
Top end face, the two ends for making heat exchanger tube communicate respectively with the outside of shell；The shell is provided with the air inlet III positioned at left end and position
In the exhaust outlet III of right-hand member, the air inlet III is connected with exhaust outlet II by breather pipe II.
8. diesel engine vent gas according to claim 7 are purified and recuperation of heat hybrid system, it is characterised in that：The heat energy is returned
Receiving apparatus also include the second heat exchanger；Second heat exchanger include the not connected epicoele that is divided into of dividing plate and dividing plate and
Cavity of resorption, the epicoele and cavity of resorption be arranged in parallel；Fixed on the dividing plate that heat pipe is housed, the heat pipe is inside filled with working medium two ends
The graphite-pipe of sealing, its two ends are in respectively in epicoele and cavity of resorption, and on the heat pipe outer wall fin is provided with；A left side for the epicoele
The right side is respectively arranged at two ends with inlet and liquid outlet, and the left and right of the cavity of resorption is respectively arranged at two ends with air inlet IV and exhaust outlet IV, institute
State air inlet IV to be connected with exhaust outlet III.
9. diesel engine vent gas according to claim 8 are purified and recuperation of heat hybrid system, it is characterised in that：The denitration dress
The urea liquid reaction tank for being provided with reaction chamber is set to, the reaction chamber is connected with exhaust outlet IV by breather pipe III；It is described logical
Tracheae III stretches into reaction chamber lower end so that tail gas reacts with the urea liquid in reaction chamber.
10. diesel engine vent gas according to claim 9 are purified and recuperation of heat hybrid system, it is characterised in that：The water inlet
Mouth is provided with the first control valve for controlling discharge, and the inlet is provided with the second control for controlling flow of refrigeration fluids
Valve, is provided with for the temperature sensor of real-time detection EGT in the exhaust outlet IV；The signal of the temperature sensor is defeated
Go out end to be connected with the signal input part of the controller of automatic control system, the signal input part of the first control valve, the second control
The signal input part of valve processed the first signal output part respectively with controller, secondary signal output end are connected.
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| CN201611059385.4A CN106677868B (en) | 2016-11-25 | 2016-11-25 | Diesel engine tail gas purification and heat recovery combined system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059385.4A CN106677868B (en) | 2016-11-25 | 2016-11-25 | Diesel engine tail gas purification and heat recovery combined system |
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| CN106677868B CN106677868B (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421409A (en) * | 2018-03-30 | 2018-08-21 | 广东南方碳捕集与封存产业中心 | A kind of collecting carbonic anhydride test experiments platform |
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| JPH0571331A (en) * | 1991-09-06 | 1993-03-23 | Hino Motors Ltd | Exhaust gas purification device |
| CN2131988Y (en) * | 1992-01-09 | 1993-05-05 | 杨庆福 | Fin warm-air machine for vehicle |
| US20040206069A1 (en) * | 2003-04-16 | 2004-10-21 | Prasad Tumati | Thermal management of exhaust systems |
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|---|---|
| CN106677868B (en) | 2020-02-07 |
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Effective date of registration: 20240602 Address after: 230000 B-1015, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI MINGLONG ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 400074 No. 66, Xuefu Avenue, Nan'an District, Chongqing Patentee before: CHONGQING JIAOTONG University Country or region before: China |