CN112146089A - Operation method of waste tire pyrolysis gas combustor - Google Patents
Operation method of waste tire pyrolysis gas combustor Download PDFInfo
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- CN112146089A CN112146089A CN202011068240.7A CN202011068240A CN112146089A CN 112146089 A CN112146089 A CN 112146089A CN 202011068240 A CN202011068240 A CN 202011068240A CN 112146089 A CN112146089 A CN 112146089A
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- pyrolysis
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 126
- 239000010920 waste tyre Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 205
- 239000002912 waste gas Substances 0.000 claims abstract description 48
- 230000006835 compression Effects 0.000 claims abstract description 32
- 238000007906 compression Methods 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims description 35
- 239000012530 fluid Substances 0.000 claims description 29
- 230000008859 change Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000003546 flue gas Substances 0.000 description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000003921 oil Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000013022 venting Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000002296 pyrolytic carbon Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
- F01D25/305—Exhaust heads, chambers, or the like with fluid, e.g. liquid injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/028—Units comprising pumps and their driving means the driving means being a planetary gear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- 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
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention relates to the technical field of environmental protection, in particular to an operation method of a waste tire pyrolysis gas combustor. The method is characterized in that: the waste gas turbocharging system comprises a waste gas turbocharging system, a pyrolysis gas combustor, the waste gas turbocharging system comprises a waste gas turbine, a planetary speed increaser, a gas compression turbine, a steam jet pump and an expansion tank, the pyrolysis gas combustor comprises an air release valve, a secondary air volute body, a servo motor, an air delivery pipe, an air bag component and a cyclone disk, wherein the air release valve comprises an auxiliary air chamber, a main air chamber, a valve rod component and an arc valve plate, air quantity required by premixing of the air delivery pipe is obtained through adjustment of the air release valve, the air bag component is coaxial with the air delivery pipe, pyrolysis gas is sprayed out through the air bag component and mixed with air, and then uniform mixing is realized through strong rotary disturbance of the cyclone disk, and inert tail gas output by the expansion tank is diffused through the secondary air volute.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to an operation method of a waste tire pyrolysis gas combustor.
Background
Waste tires are common solid waste pollutants, people recycle the waste tires through a plurality of ways to realize harmless treatment, wherein the preparation of fuel oil and carbon black through pyrolysis of the waste tires is one of the solutions, and pyrolysis gas of one of byproducts of the preparation of the fuel oil and the carbon black through pyrolysis of the waste tires is good gas fuel and can provide heat energy required by pyrolysis reaction of the waste tires. The Chinese invention patent (patent application number 200610114090.2, with the name of a method for continuously pyrolyzing waste tires by using a gas furnace) discloses a method for continuously pyrolyzing waste tires by using a gas furnace, which is characterized by comprising the following steps: (1) cleaning and airing the waste tire, and then simply cutting the waste tire in the radial direction; the common trolley tire does not need to be cut; (2) putting the waste tire treated in the step (1) into a pyrolysis container (303), and adding a catalyst into the pyrolysis container (303) at the same time; the pyrolysis container (303) is placed on a push plate (103) and pushed into a furnace body (105) through a feeding sealed cabin (102) by a hydraulic pushing device (101); (3) the hearth (302) is sealed by sealed cabins (102, 106) at two ends and is kept in a micro-negative pressure state, a pyrolysis container (303) moves on a roller rod (104) under the pushing of a subsequent push plate along with the placed push plate, and is pushed out of the discharging sealed cabin (106) by a hydraulic pushing device (101) after being preheated by a preheating section (201), pyrolyzed by a pyrolyzing section (202) and cooled by a cooling section (203), wherein the preheating temperature of the preheating section (201) is 80-250 ℃, the pyrolyzing temperature of the pyrolyzing section (202) is 250-550 ℃, and the cooling temperature of the cooling section (203) is 550-100 ℃; the pyrolysis time, namely the retention time, is 1-4 hours; (4) an air inducing device at the top of the kiln at the pyrolysis section pumps out gaseous products generated by pyrolysis, liquid and gaseous products are obtained through a condenser, the liquid is mixed fuel oil, oil products such as fractionated gasoline and diesel oil can be continuously processed, and non-condensable gaseous products are returned to the kiln to be combusted to serve as heat sources; (5) the residual pyrolytic carbon residue in the pyrolysis container after pyrolysis is discharged after the temperature is reduced to below 100 ℃ through a cooling section, and the pyrolytic carbon residue can be used for preparing carbon black filler or activated to prepare activated carbon. The Chinese invention patent (patent application number 201911055658.1, patent name is a flue gas recirculation type burner) discloses a flue gas recirculation type burner, which is characterized in that: the combustion furnace comprises a furnace body and a combustion cylinder, wherein one end of the combustion cylinder penetrates into the furnace body, a combustion port is arranged at the end part of the combustion cylinder, the other end of the combustion cylinder is positioned outside the furnace body, and an air inlet device is arranged at the end part of the combustion cylinder; a smoke exhaust pipe is arranged on the furnace body; the air inlet device comprises a fan connected to the combustion cylinder and an air inlet cover arranged at the air inlet of the fan, and the bottom of the air inlet cover is provided with an air inlet; the smoke exhaust pipe is provided with a return pipe, the return pipe is connected to the side wall of the air inlet cover, air and smoke are sucked into the fan by using the suction force of the fan, the air and the smoke are fully mixed by using the rotation of the blades, and the mixed gas is exhausted into the combustion cylinder, so that the effects of diluting oxygen in the air and reducing the emission of nitrogen oxides are achieved; and the working efficiency of the fan cannot be influenced, and any mixing device is not required to be additionally arranged in the combustion cylinder, so that the jet combustion effect of flame is ensured.
In the prior art, a technical scheme that a non-condensable gaseous product (pyrolysis gas) obtained by pyrolyzing waste tires is returned to a kiln to be combusted to serve as a heat source is provided, but details of a pyrolysis gas combustion device are not disclosed; in the technical scheme of the flue gas reflux type combustor provided by the second prior art, high-temperature flue gas is directly mixed with combustion air and fuel gas, so that the possibility of sealing failure and leakage of a fuel gas conveying pipeline can be caused, and the combustion engine knocks, and meanwhile, a fan impeller expands at high temperature to cause mechanical faults such as dynamic balance unbalance, locking and the like.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for operating a pyrolysis gas burner for junked tires, which comprises: step one, high-temperature flue gas output by a pyrolysis gas combustion kiln is subjected to heat exchange through a vertical pyrolysis tower body and a rotary rake roller to discharge waste gas, the oxygen content is reduced to be below 3%, the temperature is 410-420 ℃, the absolute pressure is 105kPa, the waste gas enters a stationary blade grid through a waste gas inlet shell and an air inlet cone, the waste gas expands in a nozzle in a stationary blade flow channel of the stationary blade grid to convert heat energy and pressure energy into kinetic energy, the flow velocity of the waste gas is correspondingly increased, the waste gas is sprayed to movable blades from the stationary blade at a high speed and in a 16-18-degree direction of inclination angle of a central line of the nozzle flow channel, in a movable blade flow channel of a movable blade wheel, the waste gas flows along the blade root in a-18-20-degree attack angle, the flow direction of the waste gas continues to be changed along the shape of the flow channel, and the movable blade inevitably generates circumferential component force due to the turning of the gas flow, so as, the component force of the movable blade in the axial direction is borne by an axial thrust bearing of the bearing box, so that overlarge axial displacement is avoided, in order to improve the efficiency of converting the thermal potential energy of the waste gas into mechanical work on the rotor assembly, the section of a waste gas through flow channel formed by the waste gas inlet shell, the gas inlet cone, the transition shell and the movable blade shroud is in a Venturi tube form which is gradually reduced and then gradually enlarged, and in order to prevent the waste gas turbine from stalling and surging, the back pressure of the outlet shell is kept at 50-55 kPa absolute pressure.
And secondly, designing a performance curve of the compression turbine according to an intake flow value of 1.3-1.5 times, accelerating the rotating speed output by a rotor assembly of the exhaust gas turbine through a planetary speed increaser, so that the rotating speed of a compression turbine of the compression turbine is increased to 3000-7500 r/min, the compression turbine always works in a large-flow stable working condition area, an output shaft of the planetary speed increaser drives the compression turbine to suck air from an air inlet channel, the air radially enters a diffuser channel at a high speed through centrifugal force, airflow is decelerated in the diffuser, kinetic energy is converted into pressure energy, the air is pressurized and enters a pyrolysis gas combustor through an outlet of a compression volute, and a blower required by premixed air conveyed by the pyrolysis gas combustor is replaced.
Thirdly, the steam with the working pressure of 0.35-0.4 MPa is accelerated in the Laval nozzle to form supersonic jet flow, the steam passes through a mixing chamber between an outlet of the nozzle and an inlet of a diffuser pipe, a negative pressure area appears due to the high speed of the steam flow, so that the exhaust gas discharged by a waste gas turbine is ejected, the outlet pressure of the exhaust gas is reduced to 50-55 kPa, the pressure difference between an inlet and an outlet of the waste gas turbine reaches 52-57 kPa, a movable impeller can reliably work, the ejected exhaust gas is sucked into the mixing chamber to be mixed with the working steam, then a single uniform mixed fluid is gradually formed, the mixed fluid is decelerated and compressed to a certain back pressure through the diffuser pipe and then discharged, and the compression stage of the mixed fluid is that two fluids in the diffuser pipe continue to exchange energy while being gradually compressed, the kinetic energy is converted into pressure energy, and the mixed fluid is discharged out of a steam jet pump, so that the steam jet pump can regulate the mixed gas and the source gas of the pyrolysis gas combustion kiln according to the requirements of Different pressure mixed fluids are saved, the mixed fluids are collected and sent into an expansion tank, one path of inert tail gas conveyed out by the expansion tank can be directly used as mixed gas for a heat supply and gas decomposition burner, and the other path of inert tail gas is condensed and then used as cold source gas for a heat supply and gas decomposition combustion kiln.
Fourthly, a flow sensor is connected at the outlet of the compression volute to monitor the output air flow, the air flow is ensured to fall in a stable working area of a compression turbine performance curve, the air flow output by the compression turbine is 1.3-1.5 times of the design air flow limit value of the pyrolysis gas combustor, and the lower calorific value of the mixed pyrolysis gas is 17-54 MJ/Nm3The change range is large, the change of the input low-level heat value is matched, the air flow of a shunting part of the emptying valve is needed, the feedback values of the input air flow sensor and the exhaust tail gas oxygen content sensor are used for calculating a control value and transmitting the control value to the servo motor, the servo motor drives the emptying valve, the emptying valve comprises a valve rod assembly and an arc valve plate, the servo motor drives the arc valve plate to rotate through the valve rod assembly, and the circle is formed by rotating the arc valve plateThe arc valve plate enlarges the flow area of the auxiliary air chamber and simultaneously reduces the flow area of the main air chamber, part of air conveyed by the air compressor turbine is discharged through the auxiliary air chamber, so that the air quantity required by premixing of an air delivery pipe is obtained through the adjustment of a discharge valve, the working pressure of compressed air input by the air compressor turbine is 112-118 kPa, an air bag component is coaxial with the air delivery pipe, pyrolysis gas is sprayed out through the air bag component and mixed with air, then uniform mixing is realized through strong rotational disturbance of a rotational flow disc, the working pressure of inert tail gas output by an expansion tank is 112-118 kPa, the temperature is 200-250 ℃, according to the oxygen content sensor feed value of the discharged tail gas, the inert tail gas is diffused through a secondary air volute body to realize full mixing with the pyrolysis gas and the air, the excess air coefficient is adjusted while part of heat energy is recoveredXAnd (4) pollutant discharge.
The inventor finds that the tire consists of an outer tire, an inner tire and a cushion belt, the outer tire consists of three main parts, namely a tire body, a tire tread and a tire bead, the tire body is formed by attaching a plurality of layers of rubberized cord fabrics according to a certain angle, and the cord fabrics are usually made of high-strength steel wires and synthetic fiber rubberized fabrics; the tread contacts with the ground and is made of heat-resistant and shear-resistant rubber materials; the tyre bead is used for tightly fixing the tyre on a wheel rim, and mainly comprises a steel wire ring, triangular filling rubber and steel wire ring wrapping cloth. The pneumatic tire can be classified into a car tire, a truck tire, an agricultural tire, an engineering tire, a special vehicle tire, an aircraft tire, a motorcycle tire and a bicycle tire according to the application of the pneumatic tire, and the recycled waste tire is generally a car tire, a truck tire, an agricultural tire, a motorcycle tire and a bicycle tire, and the structure of the waste tire is generally an oblique tire and a radial tire. The recovered waste tires are used for building fillers, highway fillers, regenerated rubber preparation, fuel oil and carbon black preparation by pyrolysis and the like.
The inventor finds that pyrolysis of waste tires mainly aims at recycling pyrolysis oil and pyrolysis carbon to further prepare products such as fuel oil, carbon black and the like, and the pyrolysis gas is uneconomical if the pyrolysis gas is used as a main product, because the yield of the pyrolysis gas is improved and a higher pyrolysis temperature (550-600 ℃) is required to break pyrolysis oil chain hydrocarbon with a larger molecular weight to generate the pyrolysis gas mainly comprising components such as methane, ethane, ethylene, propylene and the like with a smaller molecular weight,the higher pyrolysis temperature causes a part of energy resources to be wasted on damaging molecular chains, and pyrolysis gas generated by degrading pyrolysis oil is flammable and explosive and is not easy to store and transport; in order to reduce the manufacturing cost of the pyrolysis reaction furnace and meet the requirements of mechanical processing, Q345R steel is selected as a furnace body material, the allowable stress requirement of the Q345R steel at high temperature is considered, namely the steel is used at the temperature of not more than 475 ℃, the comprehensive consideration of the factors is taken, the pyrolysis process temperature of the waste tires is designed to be 350-400 ℃, the heat source for pyrolyzing the waste tires is high-temperature flue gas generated by recycling pyrolysis gas, the pyrolysis gas is non-condensable combustible gas after pyrolysis oil is condensed at normal temperature, and the low-grade heat value is 17-54 MJ/Nm3. Due to the requirements of heat transfer efficiency and heat transfer temperature difference, the temperature of flue gas from the outlet of the waste tire pyrolysis gas combustion kiln to the jacket of the vertical pyrolysis tower body and the inlet of the rotary rake roller is controlled to be 550-560 ℃, the temperature of flue gas after heat exchange of the vertical pyrolysis tower body and the rotary rake roller is 410-420 ℃, and the average temperature difference of heat transfer is 140 ℃, so that the pyrolysis gas combustion kiln can regulate and control the temperature of high-temperature flue gas generated by pyrolysis gas combustion, a cold source is required to be introduced to be mixed with the high-temperature flue gas, and the temperature required by a pyrolysis process is achieved by regulating the component ratio of.
The inventor finds that high-temperature flue gas generated by pyrolysis gas combustion of a pyrolysis gas combustion kiln provides a heat source for pyrolysis of waste tires, a burner is a key device of the pyrolysis gas combustion kiln, the glue content of the waste tires is greatly different, the heat value of the pyrolysis gas of the waste tires is greatly different, and the range of the low-level heat value of the pyrolysis gas is 17-54 MJ/Nm3The range of adjusting the thermal load output by the burner is also large, and in order to ensure the necessary thermal strength of the hearth, the burner needs to realize continuous and stable combustion, have flame with certain shape and length and stable without extinguishing, avoid backfire and fire dropping, have small excess air coefficient, and reduce NOXThe design requirements of pollutant emission and the like are met, so that the advantages of premixing type and diffusion type are absorbed, the primary air intake adopts air and fuel gas premixing type, the secondary air intake increases the oxygen content of the inert tail gas adjusting combustion air, and in a word, the premixing type and the diffusion type are serially connected to adjust the mixing ratio of the pyrolysis gas, the air and the inert tail gas through the secondary air intake to meet the design requirements.
The inventor finds that in the waste tire pyrolysis process, the requirements of material balance, water (steam) balance and energy balance and the total targets of saving energy, reducing emission and recycling, the oxygen content of the exhaust gas after the high-temperature flue gas output by the pyrolysis gas combustion kiln is subjected to heat exchange through the vertical pyrolysis tower body and the rotary rake roller is reduced to be less than 3%, the temperature is 410-420 ℃, the pressure bearing of the rotary rake roller under the dynamic seal high-temperature working condition is limited, and the designed absolute pressure is not more than 105kPa, so that the pressure index of the exhaust gas is lower than the pressure requirements of a secondary air inlet of a combustor and a cold source at an inlet of the pyrolysis gas combustion kiln of 112-118 kPa, and the exhaust gas cannot be directly recycled. According to the operating principle of turbocharging, considering that the pressure of the discharged waste gas is low, selecting an axial air inlet and vertical upward exhaust mode with small pressure loss at the air inlet end, and using a cantilever type rotor structure, the discharged waste gas is expanded through a static blade grid and a movable blade wheel to do work, the heat energy is converted into mechanical energy for rotating the movable blade wheel, the movable blade wheel drives a planetary speed increaser to drive the air turbine, the air turbine pumps the air to pressurize and enter a combustor, a blower required by premixed air conveyed by the combustor is replaced, but the absolute pressure of an inlet of the discharged waste gas is 105kPa, an outlet of the discharged waste gas is directly communicated with a chimney, namely, the backpressure of a waste gas turbine is 101 kPa, the pressure difference of the inlet and the outlet is not enough to overcome the pressure loss of a flow passage of the static blade grid and the movable blade wheel to cause the rotation, the outlet pressure of the discharged waste gas is reduced to 50-55 kPa, the pressure difference between the inlet and the outlet of the waste gas turbine reaches 52-57 kPa, and the movable impeller can work reliably. The steam source of the steam jet pump is saturated steam generated by condensation of pyrolysis oil, the pressure is 0.35-0.4 MPa, the exhaust gas and steam mixed gas at the outlet of the steam jet pump are sent to an expansion tank, non-condensable gas in the expansion tank is inert tail gas, the inert tail gas has three purposes, one of the inert tail gas serves as a cold source for adjusting the temperature of the pyrolysis gas combustion kiln, the other inert tail gas serves as an air source for adjusting the coefficient of excess air of a pyrolysis gas combustor, and the third inert tail gas serves as inert protective gas required by purging of a middle-section bell jar storage bin.
The inventor finds that the temperature of pyrolysis oil produced by a waste tire pyrolysis reaction furnace is 350-400 ℃, the pyrolysis oil needs to be condensed and fractionated and then is utilized, the condensation is generally realized through a dividing wall type heat exchanger, a cold source generally selects cooling water, the cooling water absorbs heat energy and converts the heat energy into steam, the steam with different qualities generated by multistage condensation is utilized, the steam can be used as a working fluid source with different pressure levels in a multistage steam ejector (pump) and can also be used as cooling steam of an exhaust turbine, and the total targets of material balance, water (steam) balance and energy balance in the waste tire pyrolysis process are achieved, and the total targets of energy conservation, emission reduction and cyclic utilization are achieved.
The inventor finds that the left side of a stable working condition area of the gas turbine is a surge working condition area, when the air flow introduced from an air inlet channel is lower than a surge boundary, the air flow in the area is strongly pulsed and periodically vibrated, the gas turbine is severely vibrated, the dynamic stress of the gas turbine is greatly increased, the noise is increased, the right side of the stable working condition area of the gas turbine is a blocking working condition area, the air flow speed on the narrowest section of the gas turbine and a diffuser blade channel reaches the sound speed, and the flow cannot be increased. The exhaust gas turbine has a large variation range of the inlet flow of the exhaust gas due to the influence of the enthalpy value of the pyrolysis gas, the variation range of the rotating speed output by the rotor assembly is large, the gas turbine is difficult to keep working in a stable working condition area, the structure of the rotatable inlet guide vane adjustment, the rotatable diffuser blade adjustment and the like is complex and limited in effect, the gas turbine can design a performance curve according to the 1.3-1.5 times of the inlet flow value, namely the exhaust gas turbine is driven by a planetary speed increaser, the rotating speed of the gas turbine is improved, so that the gas turbine always works in a large-flow stable working condition area, if a combustor needs small-flow air, a venting method can be adopted, namely a flow sensor and an anti-surge venting valve are connected at the outlet of a gas compression volute, the venting valve is driven by a servo motor, a signal is transmitted to the servo.
The inventor finds that steam with the working pressure of 0.35-0.4 MPa is accelerated in a Laval nozzle to form supersonic jet flow, the steam passes through a mixing chamber between an outlet of the nozzle and an inlet of a diffuser pipe, a negative pressure area appears due to the fact that the steam flow is at high speed, exhaust gas of an exhaust gas turbine is ejected, the outlet pressure of the exhaust gas is reduced to 50-55 kPa, the pressure difference between an inlet and an outlet of the exhaust gas turbine reaches 52-57 kPa, and a movable impeller can work reliably. The ejected exhaust gas is sucked into the mixing chamber to be mixed with the working steam, then a single uniform mixed fluid is gradually formed, the mixed fluid is compressed to a certain back pressure through the diffuser pipe in a speed reducing mode and then is discharged, and the compression stage of the mixed fluid is that two streams of fluid in the diffuser pipe continue to exchange energy and gradually compress at the same time, the kinetic energy is converted into pressure energy, and the mixed fluid is discharged out of the steam jet pump. Therefore, the steam jet pump can adjust different pressure mixed fluids according to the requirements of the mixed gas of the pyrolysis gas burner and the cold source gas of the pyrolysis gas combustion kiln, the mixed fluids are collected and sent into the expansion tank, one path of inert tail gas conveyed by the expansion tank can be directly used as the mixed gas for the pyrolysis burner, and the other path of inert tail gas is condensed and then used as the cold source gas for the pyrolysis gas combustion kiln.
The inventor finds that the outlet of the compression volute is connected with a flow sensor for monitoring the output air flow, the air flow is ensured to fall in a stable working area of a compression turbine performance curve, the air flow output by the compression turbine is 1.3-1.5 times of the design air flow limit value of a pyrolysis gas combustor, and the lower calorific value of the mixed pyrolysis gas is 17-54 MJ/Nm3The variation range is large, the variation range is matched with the variation of low-level heat value of input pyrolysis gas, partial air flow of an emptying valve is required to be shunted, a control value calculated by the feedback value of an input air flow sensor and a discharged tail gas oxygen content sensor is transmitted to a servo motor, the servo motor drives the emptying valve, the emptying valve comprises a valve rod assembly and an arc valve plate, the servo motor drives the arc valve plate to rotate through the valve rod assembly, the arc valve plate enlarges the flow area of an auxiliary air chamber and simultaneously reduces the flow area of a main air chamber, partial air conveyed by a compression turbine is emptied through the auxiliary air chamber, so that the air quantity required by premixing of an air delivery pipe is obtained through the adjustment of the emptying valve, the working pressure of compressed air input by the compression turbine is 112-118 kPa, an air bag assembly is coaxial with the air delivery pipe, the pyrolysis gas is sprayed out through the air bag assembly and mixed with the air and, the working pressure of the inert tail gas output by the expansion tank is 112 to118 kPa and 200-250 ℃, according to the oxygen content sensor feed value of the exhaust tail gas, the inert tail gas is diffused through a secondary air volute body to be fully mixed with the pyrolysis gas and the air, the excess air coefficient is adjusted while part of heat energy is recovered, and NO is reducedXAnd (4) pollutant discharge.
Compared with the prior art, the invention at least has the following advantages: firstly, the change range of the inlet flow of the waste gas is large due to the influence of the enthalpy value of the pyrolysis gas, the change range of the rotating speed output by a rotor assembly is also large, the gas turbine is difficult to keep working in a stable working condition area, the structure is complex and the effect is limited due to the adoption of rotatable inlet guide vane adjustment, rotatable diffuser blade adjustment and the like, the gas turbine can design a performance curve according to the inlet flow value of 1.3-1.5 times, namely the waste gas turbine is driven by a planetary speed increaser, the rotating speed of the gas turbine is improved, so that the gas turbine always works in a large-flow stable working condition area, if a combustor needs small-flow air, a venting method can be adopted, namely a flow sensor and an anti-surge venting valve are connected to the outlet of a gas compression volute, the venting valve is driven by a servo motor, a signal is transmitted to the servo motor by; secondly, the exhaust gas turbine selects an axial air inlet mode with small pressure loss at an air inlet end and a vertical upward air exhaust mode, and adopts a cantilever type rotor structure, the exhausted exhaust gas is expanded through a static blade grid and a movable impeller to do work, the heat energy is converted into mechanical energy for rotating the movable impeller, the movable impeller drives a planetary speed increaser to drive the air turbine, and the air turbine pressurizes and pressurizes air to enter a combustor, so that a blower required by premixed air conveyed by the combustor is replaced.
Drawings
Fig. 1 is a schematic front view of the operation method of the waste tire pyrolysis gas burner of the present invention.
Fig. 2 is a partially enlarged structural view a of the operation method of the waste tire pyrolysis gas burner of the present invention.
Fig. 3 is a partial enlarged structural view B of the operation method of the waste tire pyrolysis gas burner of the present invention.
Fig. 4 is a schematic view of the structure of the direction C of the operation method of the waste tire pyrolysis gas burner of the present invention.
Fig. 5 is a schematic diagram of a general structure D of the operating method of the waste tire pyrolysis gas burner of the present invention.
Fig. 6 is a schematic structural diagram of a large sample E of the operation method of the waste tire pyrolysis gas burner of the present invention.
Fig. 7 is a schematic view of a structure of a large sample F of the operation method of the waste tire pyrolysis gas burner of the present invention.
Fig. 8 is a partial enlarged structural view of G in the operation method of the waste tire pyrolysis gas burner of the present invention.
Fig. 9 is a schematic view of the H-H section arrangement of the operating method of the waste tire pyrolysis gas burner of the present invention.
Fig. 10 is a schematic structural diagram of a large sample of the operation method of the waste tire pyrolysis gas burner of the invention.
I-waste gas turbocharging system II-pyrolysis gas burner
1-compressor turbine 2-planet speed increaser 3-exhaust gas turbine 4-steam jet pump
5-expansion tank 6-waste gas inlet shell 7-air inlet cone 8-movable impeller cooling steam assembly
9-stationary blade cascade 10-movable impeller 11-rotor component 12-transition shell
13-moving blade shroud 14-outlet shell 15-bearing box 16-air inlet channel
17-compressor turbine 18-diffuser 19-compressor volute outlet 20-nozzle
21-mixing chamber 22-diffuser pipe 23-auxiliary air chamber 24-emptying valve 25-main air chamber
26-secondary air volute 27-servo motor 28-air transmission pipe 29-air bag assembly
30-cyclone disk 31-circular arc valve plate 32-valve rod assembly.
Detailed Description
The invention is further described with reference to the following detailed description of embodiments and drawings.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, the method for operating a waste tire pyrolysis gas burner is characterized in that: firstly, high-temperature flue gas output by a pyrolysis gas combustion kiln is subjected to heat exchange through a vertical pyrolysis tower body and a rotary rake roller to discharge waste gas, the oxygen content is reduced to be below 3%, the temperature is 410-420 ℃, the absolute pressure is 105kPa, the waste gas enters a stationary blade grid 9 through a waste gas inlet shell 6 and an air inlet cone 7, the waste gas expands in a nozzle in a stationary blade flow passage of the stationary blade grid 9 to convert heat energy and pressure energy into kinetic energy, the flow velocity of the waste gas is correspondingly increased, the waste gas is sprayed to movable blades from the stationary blades at a high speed and in a direction of 16-18 degrees of inclination angle of a central line of the nozzle flow passage, in a movable blade flow passage of a movable blade wheel 10, the waste gas flow is bent at an angle of-18-20 degrees along a movable blade root, the flow direction of the movable blade flow passage is continuously changed along the shape of the flow passage, and the movable blade inevitably generates circumferential component force due to the, mechanical work is output through the rotor assembly 11, axial component force generated by the movable blades is borne by an axial thrust bearing of the bearing box 15, so that overlarge axial displacement is avoided, in order to improve the efficiency of converting thermal potential energy of waste gas into mechanical work on the rotor assembly 11, the section of a waste gas through flow passage formed by the waste gas inlet shell 6, the gas inlet cone 7, the transition shell 12 and the movable blade shroud 13 is in a Venturi tube form which is gradually reduced and then gradually enlarged, and in order to prevent the waste gas turbine 3 from stalling and surging, the back pressure of the outlet shell 14 is kept at 50-55 kPa.
And secondly, designing a performance curve according to an intake flow value of 1.3-1.5 times of the compressor turbine 1, accelerating the rotating speed output by a rotor assembly 11 of the exhaust gas turbine 3 through a planetary speed increaser 2, so that the rotating speed of a compressor turbine 17 of the compressor turbine 1 is increased to 3000-7500 r/min, the compressor turbine 1 always works in a large-flow stable working condition area, an output shaft of the planetary speed increaser 2 drives the compressor turbine 17 to suck air from an air inlet channel 16, the air enters a diffuser 18 channel from the radial direction at high speed by centrifugal force, airflow is decelerated in the diffuser 18, kinetic energy is converted into pressure energy, the air is pressurized and fed into a pyrolysis gas combustor II through a compressor volute outlet 19, and an air blower required by premixed air conveyed by the pyrolysis gas combustor II is replaced.
Thirdly, the steam with the working pressure of 0.35-0.4 MPa is accelerated in the Laval nozzle 20 to form supersonic jet flow, the steam passes through a mixing chamber 21 between an outlet of the nozzle 20 and an inlet of a diffuser 22, a negative pressure area appears due to the high speed of the steam flow, so that the exhaust gas discharged by the exhaust gas turbine 3 is ejected, the outlet pressure of the exhaust gas is reduced to 50-55 kPa, the pressure difference between an inlet and an outlet of the exhaust gas turbine 3 reaches 52-57 kPa, the movable impeller 10 can reliably work, the ejected exhaust gas is sucked into the mixing chamber 21 to be mixed with the working steam, then a single uniform mixed fluid is gradually formed, the mixed fluid is decelerated and compressed to a certain back pressure through the diffuser 22 and then is discharged, and the compression stage of the mixed fluid is that two fluid in the diffuser 22 continuously carry out energy exchange and gradually compress at the same time, the kinetic energy is converted into pressure energy, and the mixed fluid is discharged out of the steam jet pump 4, therefore, the steam jet pump 4 can adjust different pressure mixed fluids according to the requirements of the pyrolysis gas burner II mixed gas and the pyrolysis gas combustion kiln furnace cold source gas, the mixed fluids are collected and sent into the expansion tank 5, one path of inert tail gas sent out by the expansion tank 5 can be directly used as the mixed gas for the pyrolysis gas burner II, and the other path of inert tail gas is condensed and used as the cold source gas for the pyrolysis gas combustion kiln furnace.
Fourthly, a flow sensor is connected to the outlet 19 of the compression volute to monitor the output air flow, the air flow is ensured to fall in a stable working area of a performance curve of the compression turbine 1, the air flow output by the compression turbine 1 is 1.3-1.5 times of the limit value of the designed air flow of the pyrolysis gas combustor, and the low-grade heat value of the mixed pyrolysis gas is 17-54 MJ/Nm3The variation range is large, the variation of the low-level heat value of input pyrolysis gas is matched, the air flow of the part of the flow of the air vent valve is required to be shunted, a control value calculated by the feed value of an input air flow sensor and a discharged tail gas oxygen content sensor is transmitted to a servo motor 27, the servo motor 27 drives the air vent valve 24, the air vent valve 24 comprises a valve rod assembly 32 and an arc valve plate 31, the servo motor 27 drives the arc valve plate 31 to rotate through the valve rod assembly 32, the arc valve plate 31 enlarges the through-flow area of an auxiliary air chamber 23 and simultaneously reduces the through-flow area of a main air chamber 25, part of air conveyed by the compression turbine 1 is emptied through the auxiliary air chamber 23, therefore, the air quantity required by an air conveying pipe 28 is obtained through the adjustment of the air vent valve 24, the working pressure of118 kPa, the air bag component 29 and the air delivery pipe 28 are coaxial, the pyrolysis gas is ejected out through the air bag component 29 and mixed with air, then uniform mixing is realized through strong rotational disturbance of the rotational flow disk 30, the working pressure of the inert tail gas output by the expansion tank 5 is 112-118 kPa, the temperature is 200-250 ℃, according to the feed value of the exhaust tail gas oxygen content sensor, the inert tail gas is diffused through the secondary air volute body 26 to realize full mixing with the pyrolysis gas and the air, the excess air coefficient is adjusted while part of heat energy is recovered, and NO is reducedXAnd (4) pollutant discharge.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (8)
1. The operation method of the waste tire pyrolysis gas burner is characterized by comprising the following steps: comprises a waste gas turbocharging system and a pyrolysis gas combustor; the exhaust gas turbocharging system comprises an exhaust gas turbine, a planetary speed increaser, a gas compression turbine, a steam jet pump and an expansion tank, wherein the exhaust gas turbine drives the gas compression turbine through the planetary speed increaser; the waste gas turbine comprises a waste gas inlet shell, an air inlet cone, a movable vane wheel cooling steam component, a stationary blade bar, a movable vane wheel, a rotor component, a transition shell, a movable vane shroud band, an outlet shell and a bearing box, wherein the air inlet cone is made into a secondary parabola shape and mainly used for guiding waste gas to uniformly distribute and flow to the stationary blade bar and the movable vane wheel; the air compression turbine comprises an air inlet channel, an air compression turbine, a diffuser and an air compression volute outlet, and if a combustor needs small-flow air, a release method can be adopted, namely the air compression volute outlet is connected with a flow sensor and an anti-surge release valve, the release valve is driven by a servo motor, the flow sensor transmits a signal to the servo motor, and part of flowing air is divided by the release valve; the steam jet pump comprises a nozzle, a mixing chamber and a diffuser pipe, different pressure mixed fluids can be regulated by the steam jet pump according to the requirements of the mixed gas of the pyrolysis gas burner and the cold source gas of the pyrolysis gas combustion kiln, the mixed fluids are collected and sent into an expansion tank, one path of inert tail gas conveyed by the expansion tank can be directly used as the mixed gas for the pyrolysis burner, and the other path of inert tail gas is condensed and used as cold source gas for the pyrolysis combustion kiln; the pyrolysis gas combustor comprises an air release valve, a secondary air volute body, a servo motor, an air delivery pipe, an air bag assembly and a spiral-flow disk, wherein the air release valve comprises an auxiliary air chamber, a main air chamber, a valve rod assembly and an arc valve plate, air quantity required by premixing of the air delivery pipe is obtained through adjustment of the air release valve, the air bag assembly is coaxial with the air delivery pipe, pyrolysis gas is sprayed out through the air bag assembly and mixed with air, then uniform mixing is achieved through strong rotary disturbance of the spiral-flow disk, and inert tail gas output by an expansion tank is diffused through the secondary air volute body and fully mixed with the pyrolysis gas and the air.
2. The method for operating a waste tire pyrolysis gas burner as claimed in claim 1, wherein: the fixed blade grid is fastened at the end part of the air inlet cone through an embedding sleeve, the inclination angle of the central line of a nozzle flow channel of the fixed blade grid is 16-18 degrees, a movable impeller cantilever is installed at the shaft end of a rotor assembly, the rotor assembly is in a double-fulcrum cantilever type installation form in a bearing box, bamboo leaf-shaped movable blades are arranged on the rim of each movable blade along the circumference, and the attack angle of the root airflow of each movable blade is-18 to-20 degrees.
3. The method for operating a waste tire pyrolysis gas burner as claimed in claim 1, wherein: the waste gas flow enters into the movable blades of the movable blades from the static blade grid nozzle at high speed to change the direction of the gas flow, the provided circumferential component force continuously pushes the movable blades to rotate continuously, and mechanical work is output to the compressor turbine through the rotor component via the planetary speed increaser.
4. The method for operating a waste tire pyrolysis gas burner as claimed in claim 1, wherein: the left side of the stable working condition area of the gas turbine is a surge working condition area, when the air flow introduced from an air inlet channel is lower than a surge boundary, the air flow in the area is strongly pulsed and periodically vibrated, the gas turbine vibrates violently, the dynamic stress of the gas turbine is greatly increased, the noise is aggravated, the right side of the stable working condition area of the gas turbine is a blocking working condition area, the air flow speed on the narrowest section of the gas turbine and a diffuser blade channel reaches the sonic speed, and the flow cannot be increased.
5. The waste gas turbine is relatively large in change range of inlet flow of waste gas due to the influence of the enthalpy value of pyrolysis gas, the change range of the rotating speed output by the rotor assembly is relatively large, the gas turbine is difficult to keep working in a stable working condition area, the performance curve of the gas turbine can be designed according to the inlet flow value of 1.3-1.5 times, namely the waste gas turbine is driven by the planetary speed increaser, the rotating speed of the gas turbine is improved, and the gas turbine always works in a large-flow stable working condition area.
6. The method for operating a waste tire pyrolysis gas burner as claimed in claim 1, wherein: the exhaust gas turbine selects an axial air inlet mode with small pressure loss at an air inlet end and a vertical upward air exhaust mode, and adopts a cantilever type rotor structure, the exhausted exhaust gas is expanded through a fixed blade grid and a movable impeller to do work, the heat energy is converted into mechanical energy for rotating the movable impeller, the movable impeller drives a planetary speed increaser to drive the air turbine, and the air turbine pumps air to be pressurized and enter a combustor, so that a blower required by premixed air conveyed by the combustor is replaced.
7. The method for operating a waste tire pyrolysis gas burner as claimed in claim 1, wherein: the steam passes through a mixing chamber between an outlet of the nozzle and an inlet of the diffuser pipe, a negative pressure area appears due to high-speed steam flow, so that exhaust gas of the exhaust gas turbine is ejected, the ejected exhaust gas is sucked into the mixing chamber to be mixed with working steam, then a single uniform mixed fluid is gradually formed, the mixed fluid is compressed to a certain back pressure through the diffuser pipe in a speed reduction manner and then is discharged, and the compression stage of the mixed fluid, namely, two streams of fluid in the diffuser pipe continue to exchange energy while being gradually compressed, the kinetic energy is converted into pressure energy, and the mixed fluid is discharged out of the steam jet pump.
8. The method for operating a waste tire pyrolysis gas burner as claimed in claim 1, wherein: the auxiliary air chamber is a bypass branch of the main air chamber, the circular arc valve plate covers a through flow passage of the auxiliary air chamber when the auxiliary air chamber is closed, the servo motor drives the circular arc valve plate to rotate through the valve rod assembly when the auxiliary air chamber is started, the circular arc valve plate enlarges the through flow area of the auxiliary air chamber and simultaneously reduces the through flow area of the main air chamber, and partial air conveyed by the air compression turbine is discharged through the auxiliary air chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011068240.7A CN112146089B (en) | 2020-10-08 | 2020-10-08 | Operation method of waste tire pyrolysis gas burner |
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| CN202011068240.7A CN112146089B (en) | 2020-10-08 | 2020-10-08 | Operation method of waste tire pyrolysis gas burner |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298479A (en) * | 1998-08-11 | 2001-06-06 | 塞穆克斯有限公司 | Method and system for the recovery of heat from products of combustion |
| US20020121089A1 (en) * | 2000-09-07 | 2002-09-05 | Claudio Filippone | Miniaturized waste heat engine |
| CN202811052U (en) * | 2012-09-26 | 2013-03-20 | 北京汽车动力总成有限公司 | Exhaust gas turbocharger and motor and vehicle |
| CN103352755A (en) * | 2013-07-29 | 2013-10-16 | 于魁江 | Novel internal combustion engine |
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2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298479A (en) * | 1998-08-11 | 2001-06-06 | 塞穆克斯有限公司 | Method and system for the recovery of heat from products of combustion |
| US20020121089A1 (en) * | 2000-09-07 | 2002-09-05 | Claudio Filippone | Miniaturized waste heat engine |
| CN202811052U (en) * | 2012-09-26 | 2013-03-20 | 北京汽车动力总成有限公司 | Exhaust gas turbocharger and motor and vehicle |
| CN103352755A (en) * | 2013-07-29 | 2013-10-16 | 于魁江 | Novel internal combustion engine |
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