CN113958954B - Multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace - Google Patents
Multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace Download PDFInfo
- Publication number
- CN113958954B CN113958954B CN202111354449.4A CN202111354449A CN113958954B CN 113958954 B CN113958954 B CN 113958954B CN 202111354449 A CN202111354449 A CN 202111354449A CN 113958954 B CN113958954 B CN 113958954B
- Authority
- CN
- China
- Prior art keywords
- reaction zone
- quartz tube
- gasification
- tube
- solid waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 64
- 238000002309 gasification Methods 0.000 title claims abstract description 55
- 239000002910 solid waste Substances 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 110
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000010453 quartz Substances 0.000 claims abstract description 81
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000010517 secondary reaction Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 239000003245 coal Substances 0.000 claims description 16
- 239000000571 coke Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 239000007809 chemical reaction catalyst Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000629 steam reforming Methods 0.000 claims description 2
- 238000012795 verification Methods 0.000 abstract description 4
- 206010017472 Fumbling Diseases 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 29
- 239000011269 tar Substances 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000011109 contamination Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000003473 refuse derived fuel Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 241000219146 Gossypium Species 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000012494 Quartz wool Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- 229920006384 Airco Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/721—Multistage gasification, e.g. plural parallel or serial gasification stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/06—Catalysts as integral part of gasifiers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/33—Laboratory scale gasifiers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention relates to a multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace, wherein an outer quartz tube penetrating through a furnace shell is arranged in the furnace shell of the multifunctional experimental furnace, a three-way quartz tube, a secondary air tube and a honeycomb ceramic carrier are arranged in the outer quartz tube, the honeycomb ceramic carrier is arranged at one end of the outer quartz tube, the three-way quartz tube and the secondary air tube are inserted from the other end of the outer quartz tube, and a gap exists between the end of the three-way Lu Danying tube and the secondary air tube inserted into the outer quartz tube and the honeycomb ceramic carrier; the end part of the tee Lu Danying pipe inserted into the outer quartz pipe is provided with a primary reaction area and a secondary reaction area, and two ends of the primary reaction area are communicated to form a multi-branch structure; the first-stage reaction zone and the second-stage reaction zone are inner reaction zones, the honeycomb ceramic carrier is an outer reaction zone, and one end of the outer quartz Guan Lou, which is discharged from the furnace, is a cooling zone. The invention realizes the performance verification of staged combustion or staged gasification in a laboratory and the fumbling of process conditions.
Description
Technical Field
The invention relates to the technical field of energy chemical industry and equipment, in particular to a multi-source organic solid waste staged combustion or gasification multifunctional experimental furnace system.
Background
The multi-source organic solid waste staged combustion and staged gasification technology is one of key core technologies for clean and efficient utilization of refuse derived fuel, biomass and coal gangue, and is the basis for developing a domestic solid waste fuelled heat source system, an organic solid waste gasification combined cycle (IGCC) power generation system and a coal-based energy chemical system.The mode of mixed combustion of the refuse derived fuel and the coal gangue mainly comprises the steps of co-combustion of fuel gas obtained by combusting the refuse derived fuel and the coal gangue, and co-combustion of the refuse derived fuel and the coal after pyrolysis. In the traditional mixed combustion process, the combustion rate is uneven, the combustion temperature is uneven, the concentration of nitrogen oxides is high, and the burnout performance is poor, so that the traditional combustion reaction is optimized by adopting staged combustion, and the combustion performance of the multi-component fuel is optimized, so that the combustion efficiency of the system is improved. There are three main types of coal gasification technologies currently being industrialized, including fixed bed gasification, fluidized bed gasification, and entrained flow gasification. In the prior gasification process, when oxygen is used as a gasifying agent, the oxygen is firstly mixed with H in pyrolysis gas 2 CO and CH 4 The reaction generates H 2 O，CO 2 The gases are then reacted with the hot coke to form H 2 . This process subjects a portion of the hydrogen in the pyrolysis gas to unwanted cycles, resulting in energy losses.
In the chinese patent CN 208949207U, the staged combustion furnace adopts a separation unit and a return unit, which can effectively reduce the temperature of the outlet synthesis gas, reduce the investment and operation cost of the system, and improve the combustion efficiency, but the problems of corrosion of combustion products and tar blockage are not effectively solved.
The biomass classification oxygen supply gasification furnace disclosed in the Chinese patent document CN108251161B adopts a mode of supplying oxygen at a spray pipe. Although the method can reduce the residual carbon content of biomass and improve the gasification efficiency, the content of generated tar is relatively high, and the efficiency still does not meet the requirement of terminal power generation, and needs to be further improved.
The staged feeding gasifier disclosed in the Chinese patent document CN112694917A supplies coal dust to the coal dust burner of the first-stage reaction chamber and supplies coal water slurry to the coal water slurry burner of the second-stage reaction chamber, and the physical chilling and chemical chilling of the second-stage reaction chamber are utilized to greatly reduce the outlet temperature of the synthesis gas, but the problems of heating surface contamination, low slag capturing rate, insufficient carbon conversion rate of the second-stage reaction and the like are easily generated, and a dry coal dust conveying system and a coal water slurry pulping conveying system are adopted, so that the system is more complex, and the system efficiency is reduced.
The existing combustion or gasification furnace has a plurality of technical problems when multi-source organic solid waste is used as raw material, such as low carbon conversion rate, high tar yield, easy contamination of heating surface, low slag catching rate and the like. However, in actual production, the process of staged combustion or gasification is directly confirmed, which is likely to cause huge economic loss, so that confirmation of the process conditions of combustion or gasification is necessary in a laboratory stage, but the performance verification of staged combustion or gasification and experimental equipment for fumbling the process conditions are combined at present.
Disclosure of Invention
The invention aims to: the invention provides a multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace, and aims to provide experimental equipment capable of solving the technical problems (low carbon conversion rate, high tar yield, easy contamination of a heating surface, low slag catching rate and the like) when the conventional combustion/gasification furnace adopts multi-source organic solid waste as a raw material.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace comprises an outer quartz tube penetrating through a furnace shell, wherein a three-way quartz tube, a secondary air tube and a honeycomb ceramic carrier are arranged in the outer quartz tube, the honeycomb ceramic carrier is arranged at one end of the outer quartz tube, the three-way quartz tube and the secondary air tube are inserted from the other end of the outer quartz tube, and a gap exists between the end, in which the three-way Lu Danying tube and the secondary air tube are inserted into the outer quartz tube, and the honeycomb ceramic carrier; the end part of the tee Lu Danying pipe inserted into the outer quartz pipe is provided with a primary reaction area and a secondary reaction area, and two ends of the primary reaction area are communicated to form a multi-branch structure; the first-stage reaction zone and the second-stage reaction zone are inner reaction zones, the honeycomb ceramic carrier is an outer reaction zone, and one end of the outer quartz Guan Lou, which is discharged from the furnace, is a cooling zone.
Further, the air flow ratio of the main path to the multiple paths of the primary reaction zone is 81-100:32.
Further, the ratio of the length of the primary reaction zone to the length of the secondary reaction zone is 15 to 18:4.
further, the primary reaction zone is provided with multi-source organic solid waste, and the secondary reaction zone is provided with coal gangue coke.
Further, a plurality of cooling devices are arranged around the cooling zone, and the total length of the primary reaction zone and the secondary reaction zone is smaller than the length of the cooling zone.
Further, the end part of one side of the outer quartz tube, which is provided with the cooling zone, is an open end, and the other end of the outer quartz tube is provided with a tube orifice which is connected with an external purification device and experimental equipment; the opening end is provided with a flange which is in butt joint with the end cover, a sealing gasket is arranged between the flange and the end cover, and the flange and the end cover are buckled and sealed through a clamping sleeve; the end cover is circular, a macroporous fixed pipe penetrating through the three-way quartz pipe is arranged in the center of the end cover, and a small hole fixed pipe inserted into the secondary air pipe is arranged at a distance of 1-2 cm away from the three-way Lu Danying pipe.
Further, the honeycomb ceramic carrier is uniformly coated with a reaction catalyst.
Compared with the prior art, the invention has the following beneficial technical effects:
the multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace provided by the invention realizes performance verification and technological condition fumbling of staged combustion or staged gasification in a laboratory, optimizes the traditional combustion/gasification reaction by adopting a staged combustion/staged gasification mode, and verifies that the staged combustion or staged gasification mode is superior to the traditional combustion/gasification reaction; the air/gasifying agent in the device is firstly burnt or gasified with the first-stage mixed material, then unreacted volatile and the air/gasifying agent are reacted with the second-stage coke for the second time, and finally the second-stage synthetic gas and the air/gasifying agent of the other pipeline are reacted in the external reaction zone. This optimized staged combustion/gasification approach increases combustion or gasification efficiency, increases carbon conversion and reduces NOx emissions during the multi-source organic solid waste combustion process, or increases H 2 The yield reduces the generation of tar, thereby solving the technical problems (low carbon conversion rate, high tar yield, easy contamination of heating surface, low slag catching rate and the like) when the prior combustion/gasification furnace adopts multi-source organic solid waste as raw material.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a multifunctional experimental furnace according to the present invention;
FIG. 2 is a schematic diagram of a split structure of the multifunctional experimental furnace of the invention;
FIG. 3 is a side view of an end cap structure;
the drawing is marked:
1. furnace shell, 2, tee Lu Danying pipe, 3, secondary air pipe, 4, snap ring, 5, end cover, 6, outer quartz pipe, 7, cooling equipment, 8, pipe orifice, 9, macroporous fixed pipe, 10, orifice fixed pipe, 11, inner reaction zone, 12, outer reaction zone, 13, flange, 14, cutting ferrule, 15, honeycomb ceramic carrier, 16, support piece, 17, cooling zone, 18, primary reaction zone, 19, quartz wool, 20, secondary reaction zone.
Detailed Description
The invention will be further illustrated by way of example with reference to the accompanying drawings. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
As shown in figures 1-2, the multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace is an improvement on the existing resistance furnace, and the furnace shell 1 in the embodiment can purchase a resistance furnace produced by Sanxingjia instruments Inc. in Xiangtan city, and the model is. The furnace shell 1 is internally provided with a controller and heating equipment, and the furnace shell 1 is externally provided with a start key, a display lamp for displaying the start state, a shutdown key and a display disc for displaying the temperature. The controller is connected with the heating equipment, and the controller is connected with a power supply, a start key, a display lamp, a shutdown key and a display panel for displaying temperature are all connected with the controller, and the temperature in the furnace shell is regulated by the controller.
A big hole is formed in the middle of the furnace shell 1 of the device, an outer quartz tube 6 penetrates through the big hole of the furnace shell 1, and the ratio of the diameter of the outer quartz tube 6 to the height of the furnace shell is 1:1-2, so that heat exchange is facilitated. The outer quartz tube 6 is fixedly sealed with the furnace housing 1 by high temperature quartz wool. The left end (the left end shown in fig. 1) of the outer quartz tube 6 is of an open structure, the right end (the right end shown in fig. 1) is close to the closed structure, a tube orifice 8 for connecting an external purification device and experimental equipment is reserved, a three-way quartz tube 2, a secondary air tube 3 and a honeycomb ceramic carrier 15 are arranged in the outer quartz tube 6, the honeycomb ceramic carrier 15 is arranged at one end of the outer quartz tube 6 close to the closed structure, the three-way quartz tube 2 and the secondary air tube 3 are inserted from the open end of the outer quartz tube 6, a gap is reserved between the end of the three-way quartz tube 2 and the secondary air tube 3 inserted into the outer quartz tube 6 and the honeycomb ceramic carrier 15, and the gap is a distance of 1-3 cm, so that the synthesis gas of the three-way quartz tube 2 and the secondary air tube 3 are ventilated and fully reacted in the honeycomb ceramic carrier 15 during staged combustion/gasification. The end part of the three-way quartz tube 2 inserted into the outer quartz tube 6 is provided with two reaction areas formed by arranging 3 quartz cottons 19 at intervals, a first-stage reaction area 18 and a second-stage reaction area 20 are sequentially arranged from left to right, the quartz cottons 19 at two ends of the first-stage reaction area 18 are communicated to form a multi-way structure, the air flow ratio of a main way to a multi-way of the first-stage reaction area 18 is 81-100:32, the three-way quartz tube is designed in the embodiment, the middle part is the main way, the two sides are the branches, and the inner diameter ratio of the main way to the inner diameter of the branches is 9-10:4. The air flow rate of the main path and the air flow rate of the multiple paths are limited to control the flow rate of the secondary gas, so that the opportunity that the air or gasifying agent in the main path is contacted with the materials in the reaction area is increased, and the reaction efficiency is higher. The length ratio of the primary reaction zone 18 to the secondary reaction zone 20 is 15-18:4, preferably 17:4, in this embodiment, the length of the primary reaction zone 18 is 85mm, and the length of the secondary reaction zone 20 is 20mm; the total length of the first-stage reaction zone 18 and the second-stage reaction zone 20 is the area length of the resistance furnace, which is the area length with the highest middle temperature, uniform and accurate, the first-stage reaction zone 18 is the main reaction zone of the whole process, the larger the reaction area is, the more complete denitration and higher the gas yield of the materials contacted with air or gasifying agent are, the second-stage reaction zone 20 mainly carries out the combustion or gasification of the volatile matters which are not converted into gas in the first-stage reaction zone 18, and the smaller length of the second-stage reaction zone 20 is beneficial to providing the opportunity of more complete re-contact for the volatile matters and semicoke, so that the length ratio of the volatile matters and semicoke is limited, the space is saved, the requirements of the combustion or gasification of the first-stage reaction zone 18 and the second-stage reaction zone 20 can be met, and the combustion or gasification efficiency is improved.
The first-stage reaction zone 18 and the second-stage reaction zone 20 form an inner reaction zone 11, the honeycomb ceramic carrier 15 is provided with an outer reaction zone 12, the honeycomb ceramic carrier 15 is uniformly coated with a reaction catalyst to improve the reaction efficiency, and one section of the outer quartz tube 6 exposed out of the furnace shell 1 is provided with a cooling zone 17. The long end of the inner reaction zone 11, which is far from the end, is an air inlet of the three-way quartz tube 2, and the other short end is an air outlet of the three-way quartz tube 2, when gas enters the grading system, a middle main way and two branches can be moved, the gas of the middle main way reacts with substances in the primary reaction zone 18, and the gas of the two branches directly reacts with the substances in the secondary reaction zone 20, so that the atmosphere grading reaction is realized, the efficiency is improved, and the tar yield is reduced.
The synthesis gas generated in the inner reaction zone 11 is discharged into the honeycomb ceramic carrier 15 from the short end (gas outlet) of the tee Lu Danying pipe 2, meanwhile, the gas introduced by the secondary air pipe 3 is also discharged into the outer reaction zone 12, and the gas introduced by the secondary air pipe 3 only participates in the reaction of the outer reaction zone 12, so that the reaction efficiency of the outer reaction zone 12 is improved, and the denitration efficiency is improved or the tar yield is reduced. Staged combustion process: the secondary air pipe 3 is filled with air, and the secondary air pipe and CO generated by the three-way quartz pipe 2 are subjected to combustion reaction again in the outer reaction zone 12; and (3) a step gasification process: the secondary air pipe 3 needs to be filled with steam, and the steam and CO generated by the tee Lu Danying pipe 2 are subjected to water gas shift reaction and steam reforming reaction of methane in the outer reaction zone 12. Through the verification of the experimental furnace, the aim of denitration to a certain extent is achieved in the process, the emission of NOx is reduced, or H is improved 2 The yield reduces the generation of tar, thereby solving the problems of energy loss, relatively high content of generated tar, tar blockage, heating surface contamination, low slag capturing rate, insufficient carbon conversion rate of two-stage reaction and the like of the existing combustion/gasification furnace.
The pipe orifice 8 is externally connected with a purifying device and comprises a first-stage purifying device, a second-stage purifying device and a third-stage purifying device which are sequentially connected, wherein quartz cotton is arranged in the first-stage purifying device and used for preventing heavy tar; the second-stage purifying equipment is polypropylene wool for adsorbing light tar; the three-stage purifying equipment is internally provided with a mixture of allochroic silica gel and active carbon, wherein the allochroic silica gel is used for dehydration, and the active carbon is used for adsorbing CnHm of small molecules; the experimental equipment comprises a pump, a mass flowmeter and a smoke analyzer, wherein the pump is used for pumping air, the mass flowmeter is used for measuring the gas flow, and the smoke analyzer is used for detecting the gas generated by the reaction and displaying the gas yield. And the three-stage purification equipment is sequentially connected with a pump, a mass flowmeter, the pump and a smoke analyzer.
A support 16 is provided below the three-way quartz tube 2. The outer quartz tube 6 penetrates through the furnace body, the supporting piece 16 is placed in the center position inside the quartz tube, and the three-way quartz tube 2 stretches into and then is put on the supporting piece 16. The supporting piece 16 is mainly used for supporting the three-way quartz tube 2, and ensures that the three-way quartz tube 2 is in a stable and stable state when being put in or taken out. The support 16 may be a ceramic crucible, quartz, or the like, which is stable in high temperature reaction.
A plurality of cooling devices 7 are arranged around the cooling zone 17 on or outside the furnace shell 1. In the embodiment, 2 cooling devices 7 are arranged, and the specific cooling devices are air cooling devices, namely fans. The cooling device 7 may be integrally provided on the furnace casing 1, and the cooling device 7 may be independently provided outside the furnace casing 1. The purpose of the cooling device 7 is that the temperature is higher when the three-way quartz tube 2 after high-temperature reaction is taken out, and the temperature of the reaction area of the three-way quartz tube 2 is reduced by the cooling device 7, so that the subsequent operation is facilitated.
The primary reaction zone 18 is used for placing multi-source organic solid waste, which can be gangue and high volatile solid waste; in this example, the refuse derivative and coal gangue mixed fuel/needle biomass and coal gangue particles. air/CO of two materials introduced in the middle main passage of the tee Lu Danying pipe 2 2 Mixed combustion/gasification under atmosphere.
The secondary reaction zone 20 has disposed therein gangue coke.
In the combustion reaction, the primary reaction zone 18 mainly generates CO after combustion 2 And N 2 And small amounts of NO and H 2 O; the reduction reaction of the first-stage unreacted volatile matters and the coal gangue coke is carried out in the second-stage reaction zone 20 to generate N 2 And CO; in the outer reaction zone 12 (i.e. honeycomb ceramic carrier 15), the air introduced into the secondary air pipe 3 has the combustion-supporting function and is opposite to the secondary airCO generated in the reaction zone 20 reacts to form CO 2 . Thereby achieving the aim of denitration and reducing the emission of NOx and CO. In gasification reaction, the primary reaction zone mainly generates CO 2 And H 2 O and a small amount of H 2 The method comprises the steps of carrying out a first treatment on the surface of the The reaction between unreacted volatile matters in the first-stage reaction zone and coal gangue coke in the second-stage reaction zone is carried out to generate CO and CH 4 And H 2 . Thereby improving H 2 The yield is reduced, and tar is generated.
The coal gangue coke is placed in the secondary reaction zone 20, and the combustion/gasification reaction is carried out again with the gas produced in the primary reaction zone 18 and the air/gasifying agent introduced by the branch of the three-way quartz tube 2. Because the volatiles not converted to gas in the primary reaction zone 18 are released in the form of coke deposits or tars, the gangue coke is placed in the secondary reaction zone 20, allowing the remaining volatiles to interact with the gangue coke, increasing the combustion/gasification efficiency, to de-nitrate or reduce tar yield.
The open end of the outer quartz tube 6 is provided with a flange 13, the flange 13 is in butt joint with the end cover 5, a sealing gasket is arranged between the flange 13 and the end cover 5, and the flange 13 and the end cover 5 are buckled and sealed through a clamping sleeve 14. As shown in fig. 3, the end cover 5 is circular, and a macroporous fixing tube 9 with a threaded structure penetrating the three-way quartz tube 2 is arranged at the center of the end cover, and the inner diameter of the macroporous fixing tube 9 is matched with the outer diameter of the main way of the three-way quartz tube 2. And a small hole fixing pipe 10 for inserting the secondary air pipe 3 is arranged in a distance from the three-way quartz pipe 2 to more than 1 cm and less than 2 cm, and the inner diameter of the small hole fixing pipe 10 is matched with the outer diameter of the secondary air pipe 3. The horizontal distance between the end of the three-way quartz tube 2 and the end of the secondary air tube 3 far away from the end cover 5 (the axial distance between the three-way quartz tube 2 and the secondary air tube 3) is more than 1 cm and less than 2 cm, so that the gas introduced into the secondary air tube 3 is prevented from directly penetrating out of the honeycomb ceramic carrier 15 and is not reacted with the gas produced by the inner reaction zone 14. When the tee Lu Danying pipe 2 is led into the macroporous fixing pipe 9 to reach the reaction position, the tee Lu Danying pipe is fixed by the clamping ring 4. The clamping ring 4 is of an existing thread locking structure, and the three-way quartz tube 2 can be fixed or drawn out by screwing the clamping ring 4 down or screwing down. The small hole fixing pipe 10 is arranged at the position of the end cover 5, which is close to the bottom, so that the three-way quartz tube 2 and the secondary air tube 3 are separated by a vertical distance. When multi-source organic solid waste is gasified in a grading way, carbon dioxide and the like in the gas discharged by the three-way quartz tube 2 have the density larger than that of water vapor introduced by the secondary air tube 3, so that the small hole fixing tube 10 is arranged at the position of the end cover 5, which is close to the bottom, so that the gas discharged by the three-way quartz tube 2 is uniformly mixed with the gas introduced by the secondary air tube 3, and the gas is dispersed in the quartz tube more uniformly.
The total length of the first-stage reaction zone 18 and the second-stage reaction zone 20, namely the length of the fuel stack in the tee Lu Danying pipe 2, should not exceed the length of the cooling zone 17, so that the reaction zone of the tee quartz pipe 2 can be quickly moved to the position of the cooling zone 17 in the reaction process, photographing is facilitated, the reaction degree of the fuel is observed, and the fuel intermediate is extracted.
The multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace is used for staged combustion reaction or staged gasification reaction. The multi-original organic solid waste staged combustion efficiency of the experimental furnace can reach 98 percent, and the multi-source organic solid waste staged gasification efficiency can reach 82.67 percent. The experimental furnace verifies that the mode of staged combustion or staged gasification is superior to the traditional combustion/gasification reaction; solves the technical problem when the prior combustion/gasification furnace adopts multi-source organic solid waste as raw materials.
Claims (7)
1. A multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace is characterized in that: an outer quartz tube (6) penetrating through the furnace shell (1) is arranged in the furnace shell (1) of the multifunctional experimental furnace, a three-way quartz tube (2), a secondary air tube (3) and a honeycomb ceramic carrier (15) are arranged in the outer quartz tube (6), the honeycomb ceramic carrier (15) is arranged at one end of the outer quartz tube (6), the three-way quartz tube (2) and the secondary air tube (3) are inserted from the other end of the outer quartz tube (6), and a gap exists between the end part of the three-way quartz tube (2) and the secondary air tube (3) inserted into the outer quartz tube (6) and the honeycomb ceramic carrier (15); the end part of the three-way quartz tube (2) inserted into the outer quartz tube (6) is provided with a first-stage reaction zone (18) and a second-stage reaction zone (20), and two ends of the first-stage reaction zone (18) are communicated to form a multi-branch structure; the first-stage reaction zone (18) and the second-stage reaction zone (20) are inner reaction zones (11), the honeycomb ceramic carrier (15) is an outer reaction zone (12), and one end of the outer quartz tube (6) exposed out of the furnace shell (1) is a cooling zone (17);
staged combustion process: the secondary air pipe (3) is filled with air, and the secondary air pipe and CO generated by the three-way quartz pipe (2) are subjected to combustion reaction again in the external reaction zone (12);
and (3) a step gasification process: the secondary air pipe (3) needs to be filled with steam, and generates water gas shift reaction and steam reforming reaction of methane with CO generated by the tee Lu Danying pipe (2) in the external reaction zone (12).
2. The multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace according to claim 1, wherein: the air flow ratio of the main path to the multiple paths of the primary reaction zone (18) is 81-100:32.
3. The multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace according to claim 1, wherein: the length ratio of the primary reaction zone (18) to the secondary reaction zone (20) is 15-18:4.
4. the multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace according to claim 1, wherein: the primary reaction zone is provided with multi-source organic solid waste, and the secondary reaction zone (20) is provided with coal gangue coke.
5. The multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace according to claim 1, wherein: the periphery of the cooling zone (17) is provided with a plurality of cooling devices (7), and the total length of the primary reaction zone (18) and the secondary reaction zone (20) is smaller than the length of the cooling zone (17).
6. The multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace according to claim 1, wherein: the end part of the outer quartz tube (6) at one side of the cooling zone (17) is an open end, and the other end of the outer quartz tube (6) is provided with a tube orifice (8) which is connected with an external purification device and experimental equipment; the opening end is provided with a flange (13), the flange (13) is in butt joint with the end cover (5), a sealing gasket is arranged between the flange (13) and the end cover (5), and the flange (13) and the end cover (5) are buckled and sealed through a clamping sleeve (14); the end cover (5) is round, a large hole fixing pipe (9) penetrating the tee Lu Danying pipe (2) is arranged at the center of the end cover, and a small hole fixing pipe (10) inserted into the secondary air pipe (3) is arranged at a distance of 1-2 cm from the tee quartz pipe (2).
7. The multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace according to claim 1, wherein: the honeycomb ceramic carrier (15) is uniformly coated with a reaction catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354449.4A CN113958954B (en) | 2021-11-16 | 2021-11-16 | Multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354449.4A CN113958954B (en) | 2021-11-16 | 2021-11-16 | Multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113958954A CN113958954A (en) | 2022-01-21 |
| CN113958954B true CN113958954B (en) | 2024-04-16 |
Family
ID=79470712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111354449.4A Active CN113958954B (en) | 2021-11-16 | 2021-11-16 | Multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113958954B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004168814A (en) * | 2002-11-18 | 2004-06-17 | Japan Science & Technology Agency | Method for operating pebble-bed gasifying furnace |
| CN101893234A (en) * | 2010-07-29 | 2010-11-24 | 哈尔滨工业大学 | Biomass boiler capable of realizing combined combustion of synthesis gas and semicoke |
| CN103912896A (en) * | 2014-03-26 | 2014-07-09 | 沈阳航空航天大学 | Aero-engine catalysis-premix staged combustion chamber and operation method thereof |
| CN105784537A (en) * | 2016-03-18 | 2016-07-20 | 武汉理工大学 | Experimental method and experimental system for simulation of staged combustion of decomposing furnace |
| WO2018082738A1 (en) * | 2016-11-04 | 2018-05-11 | Hs Techtransfer Ug (Haft.-Beschr.) & Co. Kg | Duplex-tek multi-stage gasifier |
| CN109401796A (en) * | 2017-08-17 | 2019-03-01 | 中国石油化工股份有限公司 | High-effective classifying converts combined fluidized bed reaction unit and reaction method |
| CN109794158A (en) * | 2019-02-28 | 2019-05-24 | 重庆大学 | A kind of organic solid waste burning high-temperature flue gas pretreatment modifying device and method |
| CN110669553A (en) * | 2019-10-28 | 2020-01-10 | 中国华能集团清洁能源技术研究院有限公司 | Gasification furnace for multi-raw material grading feeding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897743B (en) * | 2014-03-28 | 2016-02-03 | 上海锅炉厂有限公司 | Solid fuel classification gasification-burning double bed polygenerations systeme and method |
-
2021
- 2021-11-16 CN CN202111354449.4A patent/CN113958954B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004168814A (en) * | 2002-11-18 | 2004-06-17 | Japan Science & Technology Agency | Method for operating pebble-bed gasifying furnace |
| CN101893234A (en) * | 2010-07-29 | 2010-11-24 | 哈尔滨工业大学 | Biomass boiler capable of realizing combined combustion of synthesis gas and semicoke |
| CN103912896A (en) * | 2014-03-26 | 2014-07-09 | 沈阳航空航天大学 | Aero-engine catalysis-premix staged combustion chamber and operation method thereof |
| CN105784537A (en) * | 2016-03-18 | 2016-07-20 | 武汉理工大学 | Experimental method and experimental system for simulation of staged combustion of decomposing furnace |
| WO2018082738A1 (en) * | 2016-11-04 | 2018-05-11 | Hs Techtransfer Ug (Haft.-Beschr.) & Co. Kg | Duplex-tek multi-stage gasifier |
| CN109401796A (en) * | 2017-08-17 | 2019-03-01 | 中国石油化工股份有限公司 | High-effective classifying converts combined fluidized bed reaction unit and reaction method |
| CN109794158A (en) * | 2019-02-28 | 2019-05-24 | 重庆大学 | A kind of organic solid waste burning high-temperature flue gas pretreatment modifying device and method |
| CN110669553A (en) * | 2019-10-28 | 2020-01-10 | 中国华能集团清洁能源技术研究院有限公司 | Gasification furnace for multi-raw material grading feeding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113958954A (en) | 2022-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104033889B (en) | The biomass gasification fired device of heat accumulating type and production technology thereof | |
| CN105588127B (en) | Using the boiler combustion system of biomass gasification device | |
| CN201010626Y (en) | Biomass high-energy high-cleanness cyclone bed combustion partitioned gasifying device | |
| CN105062528A (en) | Coal-pyrolysis polygeneration process and device applicable to pulverized coal furnace | |
| CN109705922A (en) | The method of biomass air-flue gas gasification coupling coal-burning boiler electricity generation system and raising biological fuel gas quality | |
| CN105485895A (en) | Built-in biomass gasification combustion hot water boiler | |
| WO2024012608A1 (en) | Biomass gasification and waste incineration integrated furnace | |
| CN205261533U (en) | Boiler combustion system | |
| CN113958954B (en) | Multi-source organic solid waste staged combustion/gasification multifunctional experimental furnace | |
| CN102517079B (en) | Biomass gasifying device with function of catalytically cracking inner circulation tar | |
| CN101538484B (en) | Internal combustion heating rotation conical biomass gasification furnace | |
| CN105066110A (en) | Chain grate furnace composite combustion system with coal briquette layer combustion and biomass gasification spraying combustion combined | |
| CN209508167U (en) | Biomass air-flue gas gasification couples coal-burning boiler electricity generation system | |
| CN209522824U (en) | Efficient biomass gasification coupling coal-burning boiler electricity generation system | |
| CN205035321U (en) | Pyrolysis of coal poly -generation device suitable for buggy stove | |
| CN204901743U (en) | Coal cinder gratefiring spouts with biomass gasification and fires compound combustion system of chain furnace that combines together | |
| CN101799178B (en) | Contamination-free biomass gasifier | |
| CN102816618A (en) | Biomass gas process | |
| CN105936836A (en) | Small biomass gasification combustion system | |
| CN201737908U (en) | Biomass energy balance process control system | |
| CN201264990Y (en) | Photovoltaic biomass gasification stoves | |
| CN205528621U (en) | Biomass gasification's device | |
| CN221319894U (en) | Garbage internal circulation integrated device | |
| CN218811523U (en) | Biomass gasification reaction kettle | |
| WO2024011742A1 (en) | Gasification boiler enabling pyrolysis surface of surface gas phase combustion of biomass briquette to move downward |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |