CN112146089B - Operation method of waste tire pyrolysis gas burner - Google Patents

Operation method of waste tire pyrolysis gas burner Download PDF

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Publication number
CN112146089B
CN112146089B CN202011068240.7A CN202011068240A CN112146089B CN 112146089 B CN112146089 B CN 112146089B CN 202011068240 A CN202011068240 A CN 202011068240A CN 112146089 B CN112146089 B CN 112146089B
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air
gas
pyrolysis
pyrolysis gas
turbine
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CN112146089A (en
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杨松
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Shaanxi Tianbo Xinyu Environmental Protection Technology Co ltd
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Shaanxi Tianbo Xinyu Environmental Protection Technology Co ltd
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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
    • 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
    • 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 burner. The method is characterized in that: the device comprises an exhaust gas turbine supercharging system and a pyrolysis gas combustor, wherein the exhaust gas turbine supercharging system comprises an exhaust gas turbine, a planetary speed increaser, a gas compressing turbine, a steam jet pump and an expansion tank, the pyrolysis gas combustor comprises an emptying valve, a secondary air volute, a servo motor, an air delivery pipe, an air bag assembly and a cyclone disk, the emptying valve comprises an auxiliary air chamber, a main air chamber, a valve rod assembly and a circular arc valve plate, the air quantity required by premixing of the air delivery pipe is obtained through adjustment of the emptying 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 to realize uniform mixing through strong rotation disturbance of the cyclone disk, and inert tail gas output by the expansion tank is diffused through the secondary air volute to realize full mixing with pyrolysis gas and air.

Description

Operation method of waste tire pyrolysis gas burner
Technical Field
The invention relates to the technical field of environmental protection, in particular to an operation method of a waste tire pyrolysis gas burner.
Background
The 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 which is one of byproducts of the preparation of the fuel oil and the carbon black through pyrolysis of the waste tires is good gas fuel, so that heat energy required by pyrolysis reaction of the waste tires can be provided. The Chinese patent (patent application No. 200610114090.2, patent name is a method for continuously pyrolyzing waste tires by using a gas kiln) discloses a method for continuously pyrolyzing waste tires by using a gas kiln, which is characterized by comprising the following steps: (1) After cleaning and airing the waste tires, radially and simply cutting the waste tires; the common trolley tire does not need to be cut; (2) Putting the waste tires treated in the step (1) into a pyrolysis container (303), and simultaneously adding a catalyst into the pyrolysis container (303); the pyrolysis container (303) is placed on the push plate (103), and is pushed into the furnace body (105) through the feeding sealed cabin (102) by the hydraulic pushing device (101); (3) The hearth (302) is sealed by sealed cabins (102, 106) at two ends and kept in a micro negative pressure state, a pyrolysis container (303) moves on a roller rod (104) along with a placed pushing plate under the pushing of a subsequent pushing plate, after being preheated by a preheating section (201), pyrolyzed by a pyrolysis section (202) and cooled by a cooling section (203), the hearth is pushed out of a discharging sealed cabin (106) by a hydraulic pushing device (101), the preheating temperature of the preheating section (201) is 80-250 ℃, the pyrolysis temperature of the pyrolysis section (202) is 250-550 ℃, and the cooling temperature of the cooling section (203) is 550-100 ℃; the pyrolysis time, i.e. the residence time, is 1 to 4 hours; (4) The induced draft device at the top of the pyrolysis section kiln extracts gaseous products generated by pyrolysis, liquid and gaseous products are obtained through a condenser, the liquid is mixed fuel oil, petroleum products such as gasoline, diesel oil and the like can be continuously processed and fractionated, and noncondensable gaseous products return to the kiln to be burnt as a heat source; (5) The pyrolytic carbon residue left in the pyrolytic container after pyrolysis is discharged after being cooled to below 100 ℃ and can be used for preparing carbon black filler or activated carbon. Chinese patent (patent application No. 201911055658.1, patent name is a smoke backflow type burner) discloses a smoke backflow type burner, which is characterized in that: the 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 an air inlet of the fan, and an air inlet is formed in the bottom of the air inlet cover; 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 rotating the blades, and the mixed gas is discharged into the combustion cylinder, so that the effects of diluting oxygen in the air and reducing emission of nitrogen oxides are achieved; and the working efficiency of the fan cannot be influenced, and no mixing device is needed to be additionally arranged in the combustion cylinder, so that the jet combustion effect of flame is ensured.
In the prior art, firstly, a technical scheme is proposed that non-condensable gaseous products (pyrolysis gas) obtained by pyrolysis of waste tires are returned to a kiln for combustion as a heat source, but details of a pyrolysis gas combustion device are not disclosed; the technical scheme of the flue gas backflow type burner provided by the second prior art mixes high-temperature flue gas with combustion air and fuel gas directly, and the sealing failure leakage of a fuel gas conveying pipeline possibly causes the deflagration of the burner, and meanwhile, the high-temperature expansion of a fan impeller causes mechanical faults such as unbalance, locking and the like of dynamic balance.
Disclosure of Invention
The invention aims to provide an operation method of a waste tire pyrolysis gas burner, which is characterized by comprising the following steps of: step one, the high-temperature flue gas output by a pyrolysis gas combustion kiln is subjected to heat exchange by a vertical pyrolysis tower body and a rotary harrow roller, the oxygen content is reduced to below 3%, the temperature is 410-420 ℃, the absolute pressure is 105kPa, the flue gas enters a static blade grating through a flue gas inlet shell and an air inlet cone, the flue gas expands in a nozzle in a static blade runner of the static blade grating to convert heat energy and pressure energy into kinetic energy, at the moment, the flow speed of the flue gas is correspondingly improved, the flue gas is sprayed to a movable blade from the static blade at a very high speed and in the direction of the inclined angle of the central line of the nozzle by 16-18 degrees, the flue gas flows in the movable blade runner of the movable blade pulley are folded along the movable blade root by an attack angle of minus 18-minus 20 degrees, the flow direction of the flow channel is continuously changed along with the shape of the flow channel, and the movable vane inevitably generates circumferential component force due to the steering of the air flow, so that the movable vane is driven to continuously rotate, mechanical work is output through the rotor component, the axial component force generated by the movable vane is born by the axial thrust bearing of the bearing box, excessive axial displacement is avoided, the efficiency of converting the thermal potential energy of waste gas into the mechanical work on the rotor component is improved, the section of the waste gas flow channel formed by the waste gas inlet shell, the air inlet cone, the transition shell and the movable vane shroud is in a venturi tube form of gradually reducing and gradually expanding, and the back pressure of the outlet shell is kept to be 50-55 kPa for preventing the stall surge of the waste gas turbine.
And secondly, designing a performance curve according to an air inlet flow value which is 1.3-1.5 times of the air inlet flow value, and accelerating the rotation speed output by a rotor component of the exhaust gas turbine through a planetary speed increaser, so that the rotation speed of the air turbine is increased to 3000-7500 r/min, the air turbine always works in a large-flow stable working condition area, an output shaft of the planetary speed increaser drives the air turbine to suck air from an air inlet channel, centrifugal force enables the air to enter a diffuser channel from radial at high speed, in the diffuser, air flow is decelerated, kinetic energy is converted into pressure energy, and air is pressurized to enter a pyrolysis gas combustor through an air compressing volute outlet, so that a blower required by premixed air conveyed by the pyrolysis gas combustor is replaced.
Step three, the working pressure is 0.35-0.4 MPa steam is accelerated in a Laval nozzle to form supersonic jet, the steam passes through an outlet of the nozzle to a mixing chamber between inlets of a diffusion pipe, a negative pressure area appears due to the fact that the steam flow is in a high speed, so that exhaust gas discharged by an exhaust turbine is ejected, the outlet pressure of the exhaust gas is reduced to 50-55 kPa, the inlet-outlet pressure difference of the exhaust turbine reaches 52-57 kPa, the movable impeller can reliably work, the ejected exhaust gas is sucked into the mixing chamber to be mixed with the working steam, then single uniform mixed fluid is gradually formed, the mixed fluid is compressed to a certain back pressure through a diffusion pipe in a decelerating way and then discharged, the two fluids in the diffusion pipe are gradually compressed while energy exchange is continuously carried out, kinetic energy is converted into pressure energy, and the mixed fluid is discharged out of a steam jet pump, therefore, the steam jet pump can adjust different pressure mixed fluids according to requirements of mixed gas of a pyrolysis gas burner and pyrolysis tail gas combustion kiln cold source gas, the mixed fluid is collected and fed into an expansion tank, an inert pyrolysis gas fed from the expansion tank can be directly used as a mixed gas combustion gas for heating and cooling gas by another cooling channel, and the mixed gas can be used as a cold source for cooling gas.
Fourth, the outlet of the compressed air volute is connected with a flow sensor to monitor the output air flow, so that the air flow is ensured to fall in a stable working area of the compressed air turbine performance curve, and the air flow output by the compressed air turbine is 1.3-1.5 times of the designed air flow limit value of the pyrolysis gas burner, and the low-level heat value of the pyrolysis gas is 17-54 MJ/Nm after being mixed in proportion 3 The variable range is larger, the change of the low-level calorific value of the input pyrolysis gas is matched, partial air flow of the pyrolysis gas is required to be input, a control value is calculated by an input air flow sensor and an exhaust tail gas oxygen content sensor feed value and is transmitted to a servo motor, the servo motor drives the blow-down valve, the blow-down 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 a secondary air chamber and simultaneously reduces the flow area of a main air chamber, partial air conveyed by a gas turbine is blown out through the secondary air chamber, therefore, the air quantity required by premixing of an air conveying pipe is obtained through adjustment of the blow-down valve, the compressed air working pressure input by the gas turbine is 112-118 kPa, an air bag assembly is coaxial with the air conveying pipe, the pyrolysis gas is sprayed out through the air bag assembly and is subjected to strong rotation disturbance through a cyclone disk, the inert tail gas working pressure output by the expansion tank is 112-118 kPa, the temperature is 200-250 ℃, according to the exhaust tail gas oxygen content sensor feed value, the inert tail gas is diffused through a secondary air volute to be fully mixed with pyrolysis gas and air, the air coefficient is fully recovered, and NO is reduced at the same time X And (5) pollutant emission.
The inventor finds that the tire consists of an outer tire, an inner tire and a rim strip, wherein the outer tire consists of a tire body, a tire tread and a tire bead, the tire body is formed by attaching a plurality of layers of rubberized curtain cloth according to a certain angle, and the curtain cloth is usually made of high-strength steel wires and synthetic fiber rubberized; the tread is contacted with the ground, and is usually made of heat-resistant and shearing-resistant rubber materials; the tire bead is used for tightly fixing the tire on a rim, and mainly comprises a bead ring, an apex filler and a bead ring turnup. The pneumatic tires can be classified into car tires, truck tires, agricultural tires, engineering tires, special vehicle tires, aviation tires, motorcycle tires, and bicycle tires, while the recycled junked tires are usually car tires, truck tires, agricultural tires, motorcycle tires, and bicycle tires, and the structures thereof are usually bias tires and radial tires. The recovered waste tires are used for building filler, highway filler, regenerated rubber preparation, fuel oil preparation by pyrolysis, carbon black preparation and the like.
The inventor finds that the pyrolysis of junked tires is mainly aimed at recycling pyrolysis oil and pyrolytic carbon, and products such as fuel oil, carbon black and the like are further prepared, and the pyrolysis gas is uneconomical if used as a main product, because the yield of the pyrolysis gas is improved, and a higher pyrolysis temperature (550-600 ℃) is required to fracture pyrolysis oil chain hydrocarbons with larger molecular weight to generate pyrolysis gas with smaller molecular weight and components such as methane, ethane, ethylene, propylene and the like as main components, and the pyrolysis gas with higher pyrolysis temperature ensures that a part of energy is wasted on destroying molecular chains, and the pyrolysis gas generated by degrading the pyrolysis oil is inflammable and explosive and is not easy to store and transport; in order to reduce the manufacturing cost of the pyrolysis reaction furnace and facilitate the mechanical processing, the furnace body material is Q345R steel, the pyrolysis process temperature of the waste tires is designed to be 350-400 ℃ by considering the allowable stress requirement of the Q345R steel at the high temperature, namely, the use at the temperature of not more than 475 ℃, the heat source of the pyrolysis of the waste tires is recycled high-temperature flue gas generated by the combustion of pyrolysis gas, the pyrolysis gas is non-condensable combustible gas at normal temperature after the pyrolysis oil is condensed, and the low-level heat value is 17-54 MJ/Nm 3 . Due to the requirements of heat transfer efficiency and heat transfer temperature difference, the temperature of the 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 harrow roller is controlled between 550 ℃ and 560 ℃ and passes through the vertical pyrolysis tower bodyThe temperature of the discharged smoke after heat exchange of the rotary harrow 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 smoke generated by pyrolysis gas combustion, a cold source is required to be introduced to be mixed with the high-temperature smoke, and the temperature required by the pyrolysis process is achieved by regulating the proportion of the components of the cold source and the high-temperature smoke.
The inventor finds that the high-temperature flue gas generated by burning the pyrolysis gas in the pyrolysis gas burning kiln provides a heat source for pyrolysis of the waste tires, and the burner is a key device of the pyrolysis gas burning kiln, and the thermal value of the pyrolysis gas of the waste tires is very different due to the very different rubber content of the waste tires, and the low thermal value range of the pyrolysis gas is 17-54 MJ/Nm 3 The range of the heat load adjustment output by the burner is larger, the burner needs to realize continuous and stable combustion, has flame with a certain shape and length and stability without extinguishing, avoids tempering and fire release, has small excess air coefficient and reduces NO in order to ensure the necessary heat intensity of the hearth X The advantages of the premixed type and the diffusion type are absorbed, the primary air intake adopts the premixed type of air and fuel gas, the secondary air intake increases inert tail gas to adjust the oxygen content of combustion air, and the premixed type and the diffusion type are adopted in series to adjust the mixing ratio of pyrolysis gas, air and inert tail gas through the secondary air intake so as to meet the design requirements.
The inventor finds that, in order to meet the requirements of material balance, water (steam) balance and energy balance in the waste tire pyrolysis process and the overall targets of energy conservation, emission reduction and cyclic utilization, the oxygen content of the discharged waste gas of the pyrolysis gas combustion kiln after high-temperature flue gas is subjected to heat exchange by the vertical pyrolysis tower body and the rotary harrow roller is reduced to below 3%, the temperature is 410-420 ℃, and the absolute pressure of the discharged waste gas is designed to be not more than 105kPa due to limited pressure bearing under the dynamic sealing high-temperature working condition of the rotary harrow roller, so that the pressure of the discharged waste gas is lower although the discharged waste gas has a higher enthalpy value, and the pressure index is lower than the pressure requirements of a secondary air inlet of a burner and 112-118 kPa of a cold source inlet of the pyrolysis gas combustion kiln, so that the discharged waste gas cannot be directly recycled. According to the working principle of turbocharging, the axial air inlet and vertical air outlet modes with lower pressure loss at the air inlet end are selected according to the working principle of turbocharging, the cantilever type rotor structure utilizes the expansion work of the exhaust gas through the static blade grating and the movable impeller, heat energy is converted into mechanical energy for rotating the movable impeller, the movable impeller drives the planetary speed increaser to drive the air compressing turbine, the air compressing turbine compresses air to enable the air compressing turbine to enter the combustor, a blower required by premixed air conveyed by the combustor is replaced, but the absolute pressure of the inlet of the exhaust gas is 105kPa, the outlet of the exhaust gas is directly communicated with a chimney, namely the back pressure of the exhaust turbine is 101 kPa, the pressure difference between the inlet and the outlet is insufficient to overcome the runner pressure loss of the static blade grating and the movable impeller, so that the movable impeller is stopped rotating, a set of steam jet pump is required to jet the exhaust gas through higher pressure steam, the outlet pressure of the exhaust gas is reduced to 50-55 kPa, the pressure difference between the inlet and outlet of the exhaust gas turbine reaches 52-57 kPa, and the movable impeller can reliably work. The steam source of the steam jet pump is pyrolysis oil condensation to generate saturated steam, the pressure is 0.35-0.4 MPa, the exhaust gas and steam mixture gas at the outlet of the steam jet pump are sent to the expansion tank, noncondensable gas in the expansion tank is inert tail gas, the inert tail gas has three purposes, namely, one of the steam jet pump is used as a cold source for adjusting the temperature of the pyrolysis gas combustion kiln, the other steam jet pump is used as a gas source for adjusting the excess air coefficient of the pyrolysis gas burner, and the third steam jet pump is used as inert protective gas required by purging the middle bell jar storage bin.
The inventor finds that the temperature of pyrolysis oil produced by the waste tire pyrolysis reaction furnace is 350-400 ℃, the pyrolysis oil needs to be condensed and fractionated for use, the condensation is usually realized by a wall-to-wall heat exchanger, a cold source generally selects cooling water, the cooling water absorbs heat energy to be converted into steam, and different quality steam generated by multistage condensation is utilized, and the cooling water can be used as working fluid sources with different pressure levels in a multistage steam injector (pump) and also can be used as cooling steam of an exhaust turbine, thereby meeting the requirements of material balance, water (steam) balance and energy balance in the waste tire pyrolysis process, and achieving the overall aims of saving energy, reducing emission and recycling.
The inventor finds that 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 the air inlet channel is lower than a surge boundary, the air flow in the area is strongly pulsed and periodically oscillated, the gas turbine is strongly vibrated, 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 blade channels of the gas turbine and the diffuser reaches the sonic velocity, and then the flow is impossible to be increased. The waste gas turbine is large in change range of waste gas inlet flow caused by influence of the enthalpy value of pyrolysis gas, the change range of the rotating speed output by the rotor assembly is also large, the air turbine is difficult to keep working in a stable working condition area, the structure is complex and the effect is limited due to adoption of rotatable inlet guide vane adjustment, rotatable diffuser blade adjustment and the like, the air turbine can design a performance curve according to 1.3-1.5 times of inlet flow value, namely, the waste gas turbine is driven by the planetary speed increaser, the rotating speed of the air turbine is improved, the air turbine always works in a high-flow stable working condition area, if a combustor needs small-flow air, an air discharge method can be adopted, namely, an outlet of the air discharge volute is connected with a flow sensor and an anti-surge air discharge valve, the air discharge valve is driven by a servo motor, a flow sensor is used for transmitting signals to the servo motor, and partial flowing air is shunted by the air discharge valve.
The inventor finds that the steam with the working pressure of 0.35-0.4 MPa is accelerated in the Laval nozzle to form supersonic jet, the steam passes through the outlet of the nozzle to the mixing chamber between the inlets of the diffusion pipes, and a negative pressure area appears because the steam is in high speed, so that the exhaust gas discharged by the exhaust gas turbine is ejected, the outlet pressure of the exhaust gas discharged is reduced to 50-55 kPa, the pressure difference between the inlet and the outlet of the exhaust gas turbine reaches 52-57 kPa, and the movable vane can reliably work. The ejected exhaust gas is sucked into the mixing chamber to be mixed with the working steam, then single uniform mixed fluid is gradually formed, the mixed fluid is discharged after being subjected to decelerating compression to a certain back pressure through the diffuser pipe, and the mixed fluid is compressed in the compression stage, namely, two fluids in the diffuser pipe are gradually compressed while continuously carrying out energy exchange, 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 pyrolysis gas burner mixed gas and the pyrolysis gas combustion kiln cold source gas, 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 by heating the pyrolysis gas burner, and the other path of inert tail gas is used as the cold source gas by heating the pyrolysis gas combustion kiln after condensation.
The inventor finds that the outlet of the compressed air volute is connected with a flow sensor to monitor the output air flow, so that the air flow is ensured to fall in a stable working area of a compressed air turbine performance curve, and the air flow output by the compressed air turbine is 1.3-1.5 times of the designed air flow limit value of the pyrolysis gas burner, and the low-level heat value of the pyrolysis gas is 17-54 MJ/Nm after being mixed in proportion 3 The variable range is larger, the change of the low-level calorific value of the input pyrolysis gas is matched, partial air flow of the pyrolysis gas is required to be input, a control value is calculated by an input air flow sensor and an exhaust tail gas oxygen content sensor feed value and is transmitted to a servo motor, the servo motor drives the blow-down valve, the blow-down 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 a secondary air chamber and simultaneously reduces the flow area of a main air chamber, partial air conveyed by a gas turbine is blown out through the secondary air chamber, therefore, the air quantity required by premixing of an air conveying pipe is obtained through adjustment of the blow-down valve, the compressed air working pressure input by the gas turbine is 112-118 kPa, an air bag assembly is coaxial with the air conveying pipe, the pyrolysis gas is sprayed out through the air bag assembly and is subjected to strong rotation disturbance through a cyclone disk, the inert tail gas working pressure output by the expansion tank is 112-118 kPa, the temperature is 200-250 ℃, according to the exhaust tail gas oxygen content sensor feed value, the inert tail gas is diffused through a secondary air volute to be fully mixed with pyrolysis gas and air, the air coefficient is fully recovered, and NO is reduced at the same time X And (5) pollutant emission.
Compared with the prior art, the invention has at least the following advantages: firstly, the waste gas turbine has larger change range of waste gas inlet flow caused by the influence of the enthalpy value of pyrolysis gas, the change range of the rotating speed output by a rotor assembly is larger, the air turbine is difficult to keep working in a stable working condition area, the air turbine can design a performance curve according to 1.3-1.5 times of inlet flow value because of complex structure and limited effect of adopting rotatable inlet guide vane adjustment, rotatable diffuser blade adjustment and the like, namely, the air turbine is driven by a planetary speed increaser, the rotating speed of the air turbine is improved, the air turbine always works in a high-flow stable working condition area, if a combustor needs small-flow air, an air discharge method can be adopted, namely, a flow sensor and an anti-surge air discharge valve are connected to an outlet of an air discharge volute, the air discharge valve is driven by a servo motor, a signal is transmitted to the servo motor by the flow sensor, and partial flowing air quantity is shunted by the air discharge valve; secondly, the exhaust turbine selects an axial air inlet and vertical air exhaust mode with small pressure loss at the air inlet end, and a cantilever type rotor structure, and utilizes the expansion work of the discharged exhaust gas through a static blade grid and a movable impeller, the heat energy is converted into the mechanical energy of the rotation of the movable impeller, the movable impeller drives a planetary speed increaser to drive a gas turbine, and the gas turbine presses air to be boosted into a combustor, so that a blower required by premixed air conveyed by the combustor is replaced.
Drawings
FIG. 1 is a schematic diagram of the front view of the operation method of the pyrolysis gas burner for junked tires according to the present invention.
FIG. 2 is a schematic view of a partial enlarged structure of the method for operating a pyrolysis gas burner for junked tires according to the present invention.
FIG. 3 is a schematic view of a partial enlarged structure B of the method of operating a pyrolysis gas burner for junked tires according to the present invention.
FIG. 4 is a schematic view of the C-direction structure of the method of operating a pyrolysis gas burner for junked tires of the present invention.
FIG. 5 is a schematic diagram of the structure of a D-block of the method of operating a pyrolysis gas burner for scrap tires according to the invention.
FIG. 6 is a schematic diagram of the E-block structure of the method of operating a pyrolysis gas burner for junked tires according to the present invention.
FIG. 7 is a schematic diagram of the structure of a large F sample of the method of operating a pyrolysis gas burner for junked tires according to the present invention.
FIG. 8 is a schematic diagram of a partial enlarged G structure of the method of operating a pyrolysis gas burner for scrap tires according to the present invention.
FIG. 9 is a schematic view of the H-H section layout of the method of operation of the junked tire pyrolysis gas burner of the present invention.
FIG. 10 is a schematic diagram of the structure of a large sample I of the method of operating a pyrolysis gas burner for junked tires according to the present invention.
I-exhaust gas turbocharger system II-pyrolysis gas burner
1-gas turbine 2-planetary speed increaser 3-waste gas turbine 4-steam jet pump
5-expansion tank 6-exhaust gas inlet housing 7-air inlet cone 8-moving impeller cooling steam assembly
9-static blade grid 10-dynamic impeller 11-rotor assembly 12-transition shell
13-bucket shroud 14-outlet housing 15-bearing housing 16-air intake
17-gas turbine 18-diffuser 19-gas volute outlet 20-nozzle
21-mixing chamber 22-diffuser 23-secondary plenum 24-vent valve 25-primary plenum
26-secondary air worm shell 27-servo motor 28-air delivery pipe 29-air bag assembly
30-swirl disk 31-circular arc valve plate 32-valve rod assembly.
Detailed Description
The invention will be further described with reference to the drawings and the specific embodiments.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, the operation method of the pyrolysis gas burner for the junked tires is characterized in that: step one, the high-temperature flue gas output by a pyrolysis gas combustion kiln is subjected to heat exchange by a vertical pyrolysis tower body and a rotary harrow roller, the oxygen content of the discharged flue gas is reduced to below 3%, the temperature is 410-420 ℃, the absolute pressure is 105kPa, the flue gas enters a static blade grid 9 through a flue gas inlet shell 6 and an air inlet cone 7, the flue gas expands in a nozzle in a static blade runner of the static blade grid 9 to convert heat energy and pressure energy into kinetic energy, at the moment, the flow speed of the flue gas is correspondingly improved, the flue gas is sprayed to movable blades from the static blade at a very high speed and in the direction of the central line inclined angle of the nozzle by 16-18 degrees, in the movable blade runner of the movable blade wheel 10, the flue gas flows are folded along the movable blade root by an attack angle of minus 18-20 degrees, the flow direction is continuously changed along the shape of the flow channel, the movable vane inevitably generates a circumferential component force due to the turning of the air flow, so that the movable vane 10 is driven to continuously rotate, mechanical work is output through the rotor assembly 11, the axial component force generated by the movable vane is borne by the axial thrust bearing of the bearing box 15, excessive axial displacement is avoided, the efficiency of converting the thermal potential energy of the waste gas into mechanical work on the rotor assembly 11 is improved, the section of the waste gas flow channel formed by the waste gas inlet shell 6, the air inlet cone 7, the transition shell 12 and the movable vane shroud 13 is in a venturi tube form of gradually reducing and gradually expanding, and the back pressure of the outlet shell 14 is kept to be 50-55 kPa absolute pressure in order to prevent the stall surge of the waste gas turbine 3.
Step two, as the air compression turbine 1 designs a performance curve according to the air inlet flow value of 1.3-1.5 times, the rotation speed output by the rotor component 11 of the exhaust turbine 3 is accelerated by the planetary speed increaser 2, so that the rotation speed of the air compression turbine 17 of the air compression turbine 1 is increased to 3000-7500 r/min, the air compression turbine 1 always works in a large-flow stable working condition area, the output shaft of the planetary speed increaser 2 drives the air compression turbine 17 to suck air from the air inlet channel 16, centrifugal force enables the air to radially enter the diffuser 18 channel from high speed, in the diffuser 18, the air flow is decelerated, kinetic energy is converted into pressure energy, and the air is compressed and sent into the pyrolysis gas combustor II through the air compression volute outlet 19, so that a blower required by premixed air conveyed by the pyrolysis gas combustor II is replaced.
Step three, the working pressure is 0.35-0.4 MPa steam is accelerated in the Laval nozzle 20 to form supersonic jet, the steam passes through the outlet of the nozzle 20 to the mixing chamber 21 between the inlets of the diffuser pipe 22, a negative pressure area appears because the steam flow is in high speed, thereby ejecting exhaust gas discharged by the exhaust turbine 3, the outlet pressure of the exhaust gas is reduced to 50-55 kPa, the inlet-outlet pressure difference of the exhaust turbine 3 reaches 52-57 kPa, the movable vane wheel 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 discharged after being subjected to speed reduction and compression through the diffuser pipe 22 to a certain back pressure, and the mixed fluid is compressed gradually while two fluid in the diffuser pipe 22 continues to perform energy exchange, so that 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 fluid according to the requirements of the mixed gas of the pyrolysis gas and the pyrolysis gas combustor II, the ejected exhaust gas is sucked into the mixing tank 5, and the mixed fluid is discharged into the expansion tank 5 to serve as a heat supply gas for the other path of the combustion gas, and the mixed gas can be directly used as a heat supply gas of the inert gas.
Fourth, the outlet 19 of the compressed air volute is connected with a flow sensor to monitor the output air flow, so that the air flow is ensured to fall in a stable working area of the performance curve of the compressed air turbine 1, and the air flow output by the compressed air turbine 1 is 1.3-1.5 times of the designed air flow limit value of the pyrolysis gas burner, and the low-level heat value of the pyrolysis gas is 17-54 MJ/Nm after mixing 3 The change range is larger, the change of the low-level calorific value of the input pyrolysis gas is matched, partial air flow is needed to be shunted by the air release valve, a control value is calculated by an input air flow sensor and an exhaust tail gas oxygen content sensor feed value and is transmitted to a servo motor 27, the servo motor 27 drives the air release valve 24, the air release 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 flow area of a secondary air chamber 23 and simultaneously reduces the flow area of a main air chamber 25, partial air conveyed by the air compression turbine 1 is discharged through the secondary air chamber 23, therefore, the air quantity required by premixing of an air conveying pipe 28 is obtained through the adjustment of the air release valve 24, the compressed air working pressure input by the air compression turbine 1 is 112-118 kPa, an air package assembly 29 is coaxial with the air conveying pipe 28, the pyrolysis gas is sprayed out through the air package assembly 29 and is subjected to the air mixing flow and is subjected to the strong rotation disturbance through a cyclone disk 30, the inert tail gas working pressure output by the expansion tank 5 is 112-118 kPa, the temperature is 200-250 ℃, according to the exhaust tail gas oxygen content sensor feed value, the inert tail gas is diffused through the secondary air casing 26 and is subjected to the air diffusion and the air and is subjected to the full adjustment of NO, the excessive pyrolysis ratio is fully reduced, and the NO is fully recovered X And (5) pollutant emission.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.

Claims (4)

1. The operation method of the waste tire pyrolysis gas burner is characterized in that: the method comprises the steps that firstly, high-temperature flue gas output by a pyrolysis gas combustion kiln is subjected to heat exchange by a vertical pyrolysis tower body and a rotary harrow roll, the oxygen content is reduced to below 3%, the temperature is 410-420 ℃, the absolute pressure is 105kPa, the flue gas enters a static blade grid through a flue gas inlet shell and an air inlet cone, in a static blade runner of the static blade grid, the flue gas expands in a nozzle to convert heat energy and pressure energy into kinetic energy, at the moment, the flow speed of the flue gas is correspondingly improved, the flue gas is sprayed to a movable blade from the static blade at a very high speed and in the direction of an inclined angle of a central line of the nozzle runner by 16-18 degrees, in a movable blade runner of the movable blade, the flow direction of the flue gas is continuously changed along the shape of the runner, the movable blade root is changed, and as the flow turns, the movable blade inevitably generates a circumferential component, the movable blade is pushed to rotate continuously, and mechanical power is output through a rotor component, and the axial component generated by the movable blade is born by an axial thrust bearing of a bearing box, so that excessive axial displacement is avoided; step two, an output shaft of the planetary speed increaser drives the air compressing turbine to suck air from the air inlet channel, centrifugal force enables the air to enter a diffuser channel from radial direction at high speed, in the diffuser, airflow is decelerated, kinetic energy is converted into pressure energy, air is compressed and sent to enter the pyrolysis gas burner through an outlet of the air compressing volute, and a blower required by premixed air conveyed by the pyrolysis gas burner is replaced; step three, the working pressure of 0.35-0.4 MPa steam is accelerated in a Laval nozzle to form supersonic jet, the steam passes through an outlet of the nozzle to a mixing chamber between inlets of a diffusion pipe, a negative pressure area appears due to the fact that the steam flow is in high speed, so that exhaust gas turbine exhaust gas is ejected, the outlet pressure of the exhaust gas is reduced to 50-55 kPa, the inlet-outlet pressure difference of the exhaust gas turbine reaches 52-57 kPa, the movable vane can reliably work, the ejected exhaust gas is sucked into the mixing chamber to be mixed with the working steam, then single uniform mixed fluid is gradually formed, the exhaust gas turbine is decelerated and compressed to a certain back pressure through the diffusion pipe and then discharged,the compression stage of the mixed fluid, namely, the two fluids in the diffuser pipe are gradually compressed while continuously carrying out energy exchange, so that kinetic energy is converted into pressure energy, and the mixed fluid is discharged out of the steam jet pump; fourth, the outlet of the compressed air volute is connected with a flow sensor to monitor the output air flow, so that the air flow is ensured to fall in a stable working area of the compressed air turbine performance curve, and the air flow output by the compressed air turbine is 1.3-1.5 times of the designed air flow limit value of the pyrolysis gas burner, and the low-level heat value of the pyrolysis gas is 17-54 MJ/Nm after being mixed in proportion 3 The variable range is larger, the change of the low-level calorific value of the input pyrolysis gas is matched, partial air flow of the pyrolysis gas is required to be input, a control value is calculated by an input air flow sensor and an exhaust tail gas oxygen content sensor feed value and is transmitted to a servo motor, the servo motor drives the blow-down valve, the blow-down 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 a secondary air chamber and simultaneously reduces the flow area of a main air chamber, partial air conveyed by a gas turbine is blown out through the secondary air chamber, therefore, the air quantity required by premixing of an air conveying pipe is obtained through adjustment of the blow-down valve, the compressed air working pressure input by the gas turbine is 112-118 kPa, an air bag assembly is coaxial with the air conveying pipe, the pyrolysis gas is sprayed out through the air bag assembly and is subjected to strong rotation disturbance through a cyclone disk, the inert tail gas working pressure output by the expansion tank is 112-118 kPa, the temperature is 200-250 ℃, according to the exhaust tail gas oxygen content sensor feed value, the inert tail gas is diffused through a secondary air volute to be fully mixed with pyrolysis gas and air, the air coefficient is fully recovered, and NO is reduced at the same time X And (5) pollutant emission.
2. The method for operating a scrap tire pyrolysis gas burner according to claim 1, wherein: in order to improve the efficiency of converting the thermal potential energy of the waste gas into mechanical work on the rotor assembly, the cross section of a waste gas through flow channel formed by the waste gas inlet shell, the air inlet cone, the transition shell and the movable vane shroud is in a Venturi tube form which is gradually reduced and gradually enlarged, and in order to prevent the stall surge of the waste gas turbine, the back pressure of the outlet shell is kept to be 50-55 kPa.
3. The method for operating a scrap tire pyrolysis gas burner according to claim 1, wherein: because the gas turbine designs a performance curve according to the inlet air flow value which is 1.3-1.5 times, the rotation speed output by the rotor component of the exhaust turbine is accelerated by the planetary speed increaser, so that the rotation speed of the gas turbine is increased to 3000-7500 r/min, and the gas turbine always works in a large-flow stable working condition area.
4. The method for operating a scrap tire pyrolysis gas burner according to claim 1, wherein: the steam jet pump is used for adjusting different pressure mixed fluids according to the requirements of mixed gas of the pyrolysis gas burner and cold source gas of the pyrolysis gas combustion kiln, collecting the mixed fluids, sending the mixed fluids into the expansion tank, directly supplying heat to the pyrolysis gas burner as the mixed gas by one path of inert tail gas conveyed by the expansion tank, and using the heat to the pyrolysis gas combustion kiln as the cold source gas after condensing by the other path of inert tail gas.
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