CN207958278U - Dual-heating type is without catalyzing and synthesizing methane gasification furnace - Google Patents
Dual-heating type is without catalyzing and synthesizing methane gasification furnace Download PDFInfo
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- CN207958278U CN207958278U CN201820073479.5U CN201820073479U CN207958278U CN 207958278 U CN207958278 U CN 207958278U CN 201820073479 U CN201820073479 U CN 201820073479U CN 207958278 U CN207958278 U CN 207958278U
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- rotary kiln
- gasification furnace
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Abstract
Dual-heating type belongs to natural gas producing equipment field without methane gasification furnace is catalyzed and synthesized.Kiln external heating device is conducted to the material in burner hearth by cylinder of rotary kiln, generates outer fuel factor.Gasification furnace dry distillation area is sent into after fuel drying is crushed, dry distillation area pyrolysis flow to zoneofoxidation to obtain the imflammable gas CmHn gases largely based on CmHn；It is sent into appropriate oxygen to zoneofoxidation, imflammable gas generates internal heat effect with oxygen mix burning, and outer fuel factor makes the accurate temperature that zoneofoxidation obtains 1020 DEG C ± 10 DEG C, and it is CH fully to crack CmHn2And H2And it flow to reducing zone；Reducing zone obtains constant temperature, CH2And H2A large amount of CH4 are synthesized under reducing atmosphere without catalyst, investment without expensive methanation facility and operating cost, natural gas from coal construction investment is set to save 70% than the prior art, operating cost reduces by 50%, and the biomass energies such as house refuse, stalk, organic sludge is made to be converted into natural gas.
Description
Technical field
The utility model is related to natural gas producing equipment field, in particular to dual-heating type without catalyzing and synthesizing methane gas
Change stove.
Background technology
Both at home and abroad so far without without the gasification furnace for catalyzing and synthesizing methane natural gas.Existing equipment can convert biomass
It for synthesis gas, can also accomplish not generate bioxin, but to extract methane natural gas from synthesis gas, but there is prodigious office
It is sex-limited.
Methane natural gas is extracted from synthesis gas using the methods of pressure-variable adsorption, needs CH in synthesis gas4Content (V) >=
20%, it just can be both economical.The synthesis gas CH of existing state-of-the-art gasification furnace output both at home and abroad4Content (V)≤6.5%, so
Methane natural gas cannot be extracted from synthesis gas.
Utility model content
The purpose of this utility model is to provide dual-heating types without methane gasification furnace is catalyzed and synthesized, and does not need catalyst, is not required to
Investment and the operating cost for wanting expensive methanation facility, make CH in synthesis gas4Content (V) >=20%, is extracted from synthesis gas
Methane natural gas makes natural gas from coal construction investment save 70% than the prior art, and operating cost reduces by 50%, makes life rubbish
The biomass energies such as rubbish, stalk, organic sludge are converted into natural gas.
The utility model is realized in this way：
Dual-heating type provided by the utility model is without catalyzing and synthesizing methane gasification furnace, including the additional hot charging of cylinder of rotary kiln, kiln
Set and send oxygen device；
The both ends of cylinder of rotary kiln are respectively feed end and discharge end, and the inside of cylinder of rotary kiln is burner hearth, burner hearth from into
Material end is disposed with dry distillation area, zoneofoxidation and reducing zone to discharge end；
The corresponding cylinder of rotary kiln of zoneofoxidation and reducing zone uses heat-resisting material, the corresponding rotary kiln of zoneofoxidation and reducing zone
A kiln external heating device is respectively set on the outside of cylinder, kiln external heating device can be by heat-resisting material to heat supply in burner hearth；
Oxygen device is sent to be supplied oxygen for oxidizing area.
What whole producing process was realized in：
The heat in kiln external heat storehouse is conducted to burner hearth by cylinder of rotary kiln and the lifting blade being welded in cylinder of rotary kiln
Interior material generates outer fuel factor, can be adjusted and be controlled with 0-100%, to meet each area's required temperature at ± 10 DEG C.Fuel is dried
It does and is sent into gasification furnace dry distillation area after being crushed, fuel is solid biomass or coal, is entering gasification furnace provided by the utility model
Before, fuel be dried to after crushing it is aqueous be less than 15%, dry distillation area obtains controllable temperature and is pyrolyzed to fuel, big to obtain
The imflammable gas based on CmHn is measured, CmHn gases flow to zoneofoxidation；Be sent into appropriate oxygen to zoneofoxidation, imflammable gas with
Oxygen mix burning generates CO2Heat release obtains internal heat effect.Outer fuel factor makes the temperature that zoneofoxidation obtains 900-1100 DEG C, excellent
It is selected as 1020 DEG C ± 10 DEG C of accurate temperature, CmHn is made fully to be cracked into CH2And H2And it flow to reducing zone；Outer fuel factor makes reduction
Area obtains constant temperature, CH2And H2A large amount of CH are synthesized under reducing atmosphere4Without catalyst.CH in synthesis gas4Percentage by volume
The calorific value of ＞ 40%, CH4 account for flow rate about 80% (in addition about 20% is H2And CO).Cylinder of rotary kiln is discharged in synthesis gas
It is purified, separate H2, CO and N2, obtain the higher CH of purity4That is calorific value 8000kcal/m3Natural gas.Isolated is low
Calorific value fuel gas can be used for drying biomass fuel, it can also be used to which burning can also send burner hearth to burn up to replace electrical heating, improve interior heat
Temperature does not waste.
Optionally, the corresponding cylinder of rotary kiln in dry distillation area also uses heat-resisting material, the corresponding cylinder of rotary kiln in dry distillation area
Outside is also provided with a kiln external heating device.
Optionally, it is provided with refractory insulating layer on the outside of cylinder of rotary kiln, is set between refractory insulating layer and cylinder of rotary kiln
It is equipped with cylinder expansion evacuation chamber, kiln external heating device is set to cylinder expansion evacuation chamber.
Optionally, kiln external heating device includes being set to the kiln external heat storehouse of cylinder of rotary kiln lateral wall and to be placed in kiln additional
Calandria in hot storehouse.
Optionally, it includes oxygen cathete to send oxygen device, and the oxygen supply end of oxygen cathete extends to oxidation from feed end across dry distillation area
Area, oxygen supply end are manufactured using corundum material.
Optionally, feed end is provided with screw conveyor, and the input terminal of screw conveyor extends to destructive distillation across feed end
Area.
Optionally, screw conveyor is provided with the first spiral reamer section and the second spiral reamer section, the first spiral reamer section
And second be provided with unloaded section between spiral reamer section, the feed inlet of unloaded section and feed end is correspondingly arranged.
Optionally, calandria is electrical bar or heating wire, and each kiln external heat storehouse is provided with multiple electrical bars or heating wire,
The middle part of each electrical bar or heating wire is heating part, and the both ends of each electrical bar or heating wire are electric connecting terminal, electric connecting terminal
It is connect with power supply across refractory insulating layer.
Optionally, it further includes delivery main to send oxygen device, and delivery main stretches into zoneofoxidation across feed end, in delivery main
It is provided with oxygen cathete, cooling water pipeline and continuous ignition pipeline.
Optionally, the inner wall of cylinder of rotary kiln is provided with raising material unit, and raising material unit includes a plurality of lifting blade；Lifting blade with
Avoiding space is provided between oxygen cathete.
The beneficial effects of the utility model：
Both at home and abroad so far that without the gasification furnace for catalyzing and synthesizing methane natural gas, it is bad not to be primarily due to each area's temperature of burner hearth
Caused by control, temperature are unstable, the technical program is capable of the temperature in each area of stability contorting, does not need catalyst, does not need costliness
Methanation facility investment and operating cost, make natural gas from coal construction investment than the prior art save 70%, operating cost
50% is reduced, the biomass energies such as house refuse, stalk, organic sludge is made to be converted into natural gas.
1 ton of house refuse of this gasification furnace produces 85 cubic metres of natural gases (by 1000kcal/kg), and 1 ton of stalk is (by aqueous
30%) 270 cubic metres of natural gases are produced, without methanation engineering, gas cost is cheap, and unit cost is less than 1 yuan/m3
(being varied from depending on raw material and scale).
CH in synthesis gas4Content (V) >=20% can use the methods of pressure-variable adsorption to extract methane from synthesis gas natural
Gas, it is both economical.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is that the dual-heating type that the utility model embodiment provides is illustrated without the overall structure for catalyzing and synthesizing methane gasification furnace
Figure；
Fig. 2 is the partial enlarged view of the A in Fig. 1；
Fig. 3 is the partial enlarged view of the B in Fig. 1；
Fig. 4 is the partial enlarged view of the C in Fig. 1；
Fig. 5 is the partial enlarged view of the D in Fig. 1.
Icon：100- cylinder of rotary kiln；110- burner hearths；The dry distillation areas 111-；112- zoneofoxidations；The reducing zones 113-；120- into
Expect end；121- discharge ends；122- kiln head covers；123- kiln hoods；124- syngas outlets；125- relief valves；126- kiln hoods are double soft
Sealing device；The double soft sealers of 127- kiln tails；200- driving devices；210- transmission devices；220- is with kiln flame retardant coating；230- takes turns
Band support roller support device；300- kiln external heating devices；310- kiln external heats storehouse；320- electrical bars；400- send oxygen device；410- is defeated
Oxygen pipe；420- supplies oxygen end；500- refractory insulating layers；510- cylinders expansion evacuation chamber；520- heating compartments；600- raising material units；
700- screw conveyors.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that term " first ", " second " etc. are only used for distinguishing description,
It is not understood to indicate or imply relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, can also be detachable for example, " connection " may be a fixed connection
Connection, or be integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, centre can also be passed through
Medium is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1, referring to figs. 1 to Fig. 5.
As shown in Figure 1, dual-heating type provided in this embodiment is without catalyzing and synthesizing methane gasification furnace, including cylinder of rotary kiln 100,
The both ends of cylinder of rotary kiln 100 are respectively feed end 120 and discharge end 121.
As shown in Fig. 2, dual-heating type is additionally provided with driving device 200 and transmission device 210 without methane gasification furnace is catalyzed and synthesized.
Rack gear is arranged on 100 outer wall of cylinder of rotary kiln, transmission device 210 is located at the bottom of cylinder of rotary kiln 100, and gear ring and transmission fill
210 engagements are set, driving device 200 drives transmission device 210 that cylinder of rotary kiln 100 is driven to turn round.It is returned together with transmission device 210
What is turned is fastened on kiln flame retardant coating 220 on cylinder of rotary kiln 100, and and then rotary kiln turns round together.It can be adopted with kiln flame retardant coating 220
Use siliceous material.
As shown in Fig. 2, cylinder of rotary kiln 100 is provided with wheel belt support roller support device 230.Wheel belt support roller support device 230
Including wheel belt and riding wheel apparatus.According to calculating, 1 grade of wheel belt of setting spaced apart, wheel belt is supported on riding wheel apparatus.The knot
Structure ensures the firm of gasification furnace.Every group of riding wheel apparatus is all provided with water cooling system.Wheel belt support roller support device 230 can have 2-10
Shelves, preferably 2-5 grade, to support cylinder of rotary kiln 100, prevent cylinder of rotary kiln 100 be heated sagging " dancings " turn round run.
It need to consider being radially expanded for cylinder of rotary kiln 100.It is radially expanded influence：1, to the influence of wheel belt, wheel belt outer diameter
Diameter is certain, and wheel belt internal diameter and the fixed local temperature of cylinder of rotary kiln 100 are very high, are radially expanded very greatly, and wheel belt construction must
It need can absorb radial expansion volume.In specific embodiment, wheel belt is constructed using retaining latch plate form, radial swollen to absorb
Bulk；2, it at wheel belt, is radially expanded to the influence with 220 gap of kiln flame retardant coating, with kiln flame retardant coating 220 and rotary kiln when cold conditions
It is unable to tight fit, it is necessary to reserve the gap that rotary kiln is radially expanded.According to rotary kiln diameter and each area's different temperatures, calculate not
With the radial expansion volume in region, determine at wheel belt with the gap that should be reserved between kiln flame retardant coating 220 and cylinder of rotary kiln 100,
It is zero to be allowed to the gap in hot operation.
As shown in figure 3, the feed end 120 of cylinder of rotary kiln 100 is provided with kiln head cover 122.As shown in figure 4, rotary kiln cylinder
The discharge end 121 of body 100 is additionally provided with kiln hood 123 and syngas outlet 124.It need to consider the axial expansion of rotary kiln.According to
Different distance, different temperatures of the fast knot to each grade of wheel belt are expanded, axial expansion amount is different.Calculate the axis between every grade of wheel belt
To after swell increment, axial expansion amount is reserved when wheel belt both sides are installed with kiln flame retardant coating 220, prevents hot operation wheel belt because of axial direction
Expansion is broken with kiln flame retardant coating 220.
Kiln head cover 122 maintains static, and cylinder of rotary kiln 100 stretches into kiln head cover 122.Transmission device 210 is provided with expansion
Fast knot is absorbed to the axial expansion of feed end 120 by kiln head cover 122 from expansion fast knot, i.e., the width of kiln head cover 122 will be more than dead
It ties to the swell value of kiln hood.Transmission device 210 be provided with expansion fast knot, from expansion axial expansion from fast knot to discharge end 121 by
Kiln hood 123 absorbs, i.e., the width of kiln hood 123 will be more than swell value of the fast knot to kiln tail.The synthesis that reducing zone 113 generates
Gas is expelled to from syngas outlet 124 outside kiln.
As shown in Figure 3 and Figure 4, cylinder of rotary kiln 100 is provided with relief valve 125.In specific embodiment, relief valve 125 has 2
It is a, it is separately mounted to above kiln head cover 122 and kiln hood 123.
As shown in figure 3, being provided with the double soft sealers of kiln hood on the outside of kiln head cover 122 and the junction of feed end 120
126, as shown in figure 4, being provided with the double soft sealers 127 of kiln tail, kiln on the outside of kiln hood 123 and the junction of discharge end 121
The double soft sealers 126 of head and kiln tail pair soft sealer 127 are that double-layer seal vacuumizes construction.This sealing device is both
Soft seal is double containment again, and soft seal keeps sealing material fitting cylinder air tight, and double containment is to be formed between two seals
Cavity vacuumizes, even if having ash content spilling in revolution gasification furnace, is pumped, does not pollute the environment.In view of feed end 120 and discharging
Hold 121 temperature high, temperature is up to 700 DEG C, the revolution of the double soft sealers 126 of kiln hood, kiln tail double soft sealers 127 and high temperature
Kiln cylinder body 100 is bonded easy to wear, and in order to reduce sealing wear, a circle is welded out on 121 rotary kiln of feed end 120 and discharge end
Wheel belt, the double soft sealers 126 of kiln hood, kiln tail pair soft sealer 127 is contacted rather than with the wheel belt welded out and rotary kiln
Cylinder 100 is in direct contact, and temperature is low, and the double soft sealers 126 of kiln hood, the double soft sealers 127 of kiln tail are wear-resisting at low temperature, such as
This can extend the double soft sealers 126 of kiln hood, kiln tail 127 service life of double soft sealers.
As shown in Figure 1 and Figure 5, dual-heating type further includes kiln external heating device 300 and send oxygen without methane gasification furnace is catalyzed and synthesized
Device 400；The inside of cylinder of rotary kiln 100 is burner hearth 110, and burner hearth 110 is disposed with from feed end 120 to discharge end 121
Dry distillation area 111, zoneofoxidation 112 and reducing zone 113；Zoneofoxidation 112 and 113 corresponding cylinder of rotary kiln 100 of reducing zone are using resistance to
A kiln external heating device is respectively set in the outside of hot material, 113 corresponding cylinder of rotary kiln 100 of zoneofoxidation 112 and reducing zone
300, kiln external heating device 300 can be by heat-resisting material to heat supply in burner hearth 110；Send oxygen device 400 for oxidizing area 112
Oxygen supply.
Existing equipment can convert biomass into synthesis gas, can also accomplish not generate bioxin, but will be from conjunction
At methane natural gas is extracted in gas, but there is significant limitation.Methane is extracted from synthesis gas using the methods of pressure-variable adsorption
Natural gas needs CH in synthesis gas4Content (V) >=20%, just can be both economical.Existing state-of-the-art gasification furnace output both at home and abroad
Synthesis gas CH4Content (V)≤6.5%, so methane natural gas cannot be extracted from synthesis gas.
Nothing catalyzes and synthesizes CH in gasification furnace4(V) >=20% two premises are needed：1, the destructive distillation of dry distillation area 111 is abundant, with
It obtains the higher imflammable gas of CmHn concentration and flow to zoneofoxidation 112；2,112 temperature of zoneofoxidation wants 1000 DEG C or more, so that
C5-C19 in CmHn is fully cracked into CH2And H2(C5-C19 starts to crack at 900 DEG C, 1000 DEG C of fully cracking)；Product
CH2(methylene) is unstable transition substance, the CH under reducing atmosphere and preference temperature2+H2=CH4, without catalyst.
Both at home and abroad so far without without the gasification furnace for catalyzing and synthesizing methane natural gas, being primarily due to 110 each area's temperature of burner hearth
Caused by bad control, temperature are unstable.
The first section started from kiln head cover 122 is not dry distillation area 111 to oxygen；Fuel is in this dry distillation area 111 to generate CmHn
Paraffin gas, and it flow to zoneofoxidation 112；It is sent into the oxygen that purity is 60%-99.6% to zoneofoxidation 112, open fire burning generates
800-950 DEG C of high temperature obtains internal heat type effect；113 length ＞ 10m of reducing zone, are preferably the reducing zone 113 of 20m-40m, do not give
Oxygen keeps the required constant temperature of synthesizing methane.
Zoneofoxidation 112 and 113 corresponding cylinder of rotary kiln 100 of reducing zone use heat-resisting material, such as heat resisting steel.Existing skill
In art, the material not instead of heat resisting steel of gasification furnace cylinder of rotary kiln 100, carbon steel, 100 inner wall of cylinder of rotary kiln has about
200mm castable refractories make that high temperature can be kept in cylinder of rotary kiln 100, and such construction can not carry out kiln external heat, because resistance to
Fiery castable can prevent high temperature in cylinder of rotary kiln 100 from passing to outside cylinder of rotary kiln 100, can equally prevent cylinder of rotary kiln 100
Outer high temperature passes in cylinder of rotary kiln 100.
A kiln external heating device is respectively set in the outside of 113 corresponding cylinder of rotary kiln 100 of zoneofoxidation 112 and reducing zone
300.Under the operating mode in no kiln external heat storehouse 310, in cylinder of rotary kiln 100 temperature completely by be sent into burner hearth 110 oxygen with
Produced by fuel is mixed and burned, and it is necessarily anoxycausis to gasify, and the gasifying agent being sent into cylinder of rotary kiln 100 accounts for theoretical air
Necessary≤38% (ordinarily being about 26%) is measured, oxygen is few, and burning is insufficient, thus temperature is not high；Even if by limited gasifying agent
It concentrates and is sent into zoneofoxidation 112, it is that the imflammable gas generated with dry distillation area 111 is mixed and burned to make gasifying agent, if fuel coal, warp
Cross destructive distillation in about 1 hour, CmHn about 50% in the imflammable gas of acquisition, this hydrocarbon dense imflammable gas burning temperature
Degree is up to 1000 DEG C, and still, since 112 high-temperature gas of zoneofoxidation is continuously taken away by kiln tail air-introduced machine, zoneofoxidation 112 is difficult to stablize
Reach 1000 DEG C；If fuel house refuse, stalk, organic sludge etc., CmHn concentration is relatively low in the imflammable gas of acquisition, this
The not high imflammable gas ignition temperature of the hydrocarbon concentration of kind is 800-900 DEG C, is not achieved 1000 DEG C；CmHn is in high temperature aerobic conditions
Under be cracked into CO2And H2O is cracked into CH under anoxic conditions2And H2, CmHn gases need 1000 DEG C of ability be fully cracked into CH2、
H2If zoneofoxidation 112 cannot be stablized at 1000 DEG C or more, even if CmHn can not fully be cracked into CH under anoxic conditions2With
H2, otherwise major part CmHn is still tar gas, and it is liquid tar to be cooled to room temperature.The reduction reaction of reducing zone 113 is
The endothermic reaction, temperature, which is reduced to, does not meet CH4When the temperature of synthesis, if additional heat does not maintain preference temperature, the amount of CH4 is synthesized
Just seldom, 20% (V) is not achieved, like that, even if also uneconomical on methane gas economic from being extracted in synthesis gas；Reducing zone
113 must be reducing atmosphere, cannot increase temperature to oxygen combustion, and it can only be electrical heating additional heat to increase temperature, but
It is that electrical heating requires cannot have flammable explosive gas, and the CH synthesized4It is exactly flammable explosive gas with CO, so rotary kiln cylinder
Electrical heating cannot be set in body 100.As it can be seen that being not provided with kiln external heat storehouse 310, not only zoneofoxidation 112 can not be such that CmHn stabilizations split
Solution is CH2And H2, and reducing zone 113 can not also obtain stable preference temperature makes CH2And H2Synthesize CH4.The additional hot charging of kiln is set
Set 300, it is ensured that each area's required temperature is provided 1100 DEG C or more of temperature (can be adjusted and be controlled with 0-100%), generates outer thermal effect
It answers, to meet each area's required temperature at ± 10 DEG C, to enable dry distillation area 111 to obtain a large amount of paraffin gas, 112 energy of zoneofoxidation
Paraffin gas is fully cracked into CH2And H2, reducing zone 113 can make CH2+H2Generate CH4。
The material of the zoneofoxidation 112 and reducing zone 113 in cylinder of rotary kiln 100 in the technical program is heat resisting steel,
Inner wall does not have castable refractory, therefore kiln external heat storehouse 310 can be arranged.Elema, the Si-Mo rod of kiln external heat can be sent out
1400 DEG C -1600 DEG C, and heat adjusting range and controlled for 0-100%, therefore 112 furnace wall temperature of zoneofoxidation can be made accurately to be controlled
For system ± 10 DEG C within 1020 DEG C, the heat of heating is conducted to 110 material of burner hearth and gas by barrel wall, so that it is stablized and adds
Heat is to required temperature, to make zoneofoxidation 112CmHn fully be cracked into CH2And H2It is flow to reducing zone 113, reducing zone 113 is made to maintain
Preference temperature makes CH2And H2Synthesize CH4。
Oxygen device 400 is sent to be supplied oxygen for oxidizing area 112.The technical program uses double fuel factors of interior external heat.Interior heat
Effect is to be sent into appropriate oxygen in zoneofoxidation 112 to be mixed and burned generation CO2 heat releases with imflammable gas, becomes internal heat effect；Outside
Fuel factor is the material that kiln external heating device 300 is conducted to burner hearth 110 by cylinder of rotary kiln 100, becomes outer fuel factor.Using
Double fuel factors of interior external heat not only make dry distillation area 111 can get required accurate temperature, generate enough CmHn gases and flow to
Zoneofoxidation 112；And make zoneofoxidation 112 that can stablize at 950-1050 DEG C, preferably 970-1020 DEG C (± 10 DEG C) enable CmHn to fill
Divide and is cracked into CH2And H2It flow to reducing zone 113；Also reducing zone 113 can be made to obtain required constant temperature, following reaction occurs：CH2+H2=
CH4, C+2H2O=CH4+O2, C+CO2=2CO.Make the CH in synthesis gas4Content reaches about 40% (V), and CH4 calorific values account for synthesis gas
Calorific value is more than 80%.Synthesis gas discharges out of the furnace purified and separates H2, low heat values component and the N such as CO2, obtain high-purity C H4I.e.
The methane natural gas of calorific value ＞ 8000kcal/m3, without methanation.
What whole producing process was realized in：
The heat in kiln external heat storehouse 310 passes through cylinder of rotary kiln 100 and the lifting blade being welded in cylinder of rotary kiln 100
The material being conducted in burner hearth 110 generates outer fuel factor, can adjust control with 0-100%, with meet each area's required temperature ±
10℃.Gasification furnace dry distillation area 111 is sent into after fuel drying is crushed, fuel is solid biomass or coal, is entering this practicality
Before the gasification furnace of novel offer, fuel be dried to after crushing it is aqueous be less than 15%, dry distillation area 111 obtains controllable temperature to fuel
It is pyrolyzed, to obtain, largely the imflammable gas based on CmHn, CmHn gases flow to zoneofoxidation 112；To zoneofoxidation 112
It is sent into appropriate oxygen, imflammable gas generates CO with oxygen mix burning2Heat release obtains internal heat effect.Outer fuel factor makes oxidation
Area 112 obtains 900-1100 DEG C of temperature, and preferably 1020 DEG C ± 10 DEG C of accurate temperature makes CmHn fully be cracked into CH2With
H2 simultaneously flow to reducing zone 113；Outer fuel factor makes reducing zone 113 obtain constant temperature, CH2And H2A large amount of CH are synthesized under reducing atmosphere4
Without catalyst.CH in synthesis gas4Percentage by volume ＞ 40%, CH4Calorific value account for about the 80% of flow rate (in addition about
20% is H2And CO).Synthesis gas discharge cylinder of rotary kiln 100 is purified, separates H2, CO and N2, obtain the higher CH of purity4
That is the natural gas of calorific value 8000kcal/m3.Isolated fuel gas with low heat value can be used for drying biomass fuel, it can also be used to fire
It burns to replace electrical heating, burner hearth 110 can also be sent to burn up, improve interior hot temperature, do not waste.
It should be noted that：1, fuel can be the solid wastes such as house refuse, stalk branch bavin, organic sludge, can also be
The dangerous wastes such as dregs of a decoction bacteria residue, clinical waste and coal etc..2, kiln external heat storehouse 310 can be electrical heating or gas heating, electricity
Elema or Si-Mo rod or heating wire may be used in heating, and natural gas or other combustion gas may be used in gas heating.3, specific
In embodiment, it is preferably 970-1020 DEG C that 112 temperature of zoneofoxidation, which is stablized in 900-1100 DEG C, other embodiment,.4, specific real
It applies in example, is sent into the oxygen that purity is 60%-99.6% to zoneofoxidation 112, open fire burning generates 800-950 DEG C of high temperature, obtains
Internal heat type effect.5, in specific embodiment, 113 length of reducing zone is more than 10m, is preferably 20m-40m.6, in specific embodiment,
Cylinder of rotary kiln 100 is horizontal installation, and the gradient of installation is 3%-6%, rotary speed 0.2-5r/min.7, correspond to oxidation
The kiln external heating device 300 of area 112 and reducing zone 113 along 100 axial direction of cylinder of rotary kiln setting length according to heating
It needs to set.
As shown in Figure 1,111 corresponding cylinder of rotary kiln 100 of dry distillation area also uses heat-resisting material, dry distillation area 111 corresponding
The outside of cylinder of rotary kiln 100 is also provided with a kiln external heating device 300.
It should be noted that：1, the material of 111 furnace wall of dry distillation area, can be heat resisting steel, can also be that carbon steel adds inner wall to pour
Material is built, kiln external heat storehouse 310 is then set if it is heat resisting steel, if it is carbon steel plus inner wall pouring material, then dry distillation area 111 is using steaming
Vapour heats.2, corresponding to the kiln external heating device 300 of dry distillation area 111 along the setting length root of 100 axial direction of cylinder of rotary kiln
It needs to set according to heating.
As shown in figure 5, the outside of cylinder of rotary kiln 100 is provided with refractory insulating layer 500, refractory insulating layer 500 and revolution
Cylinder expansion evacuation chamber 510 is provided between kiln cylinder body 100, kiln external heating device 300 is set to cylinder expansion evacuation chamber 510.
Refractory insulating layer 500, which is arranged, can keep kiln external heating device 300 to the heating temperature in burner hearth 110, make destructive distillation
Area 111, zoneofoxidation 112 and reducing zone 113 obtain a metastable temperature, conducive to methane is produced.It is swollen in specific embodiment
Swollen evacuation chamber is provided with electric heating control case, and the temperature of expansion evacuation chamber is adjusted by electric heating control case to be controlled, and motor heat can be
0-100% is controlled.Expansion evacuation chamber high temperature is by 100 wall of cylinder of rotary kiln and is fastened on the heat resisting steel lifting blade of cylinder inboard wall,
The material and gas of burner hearth 110 are passed to, external-heat effect is generated.
The radial spacing of expansion evacuation chamber is radially expanded value more than cylinder of rotary kiln 100.Siliceous resistance to material is away from rotary kiln cylinder
Body 100 has a certain distance, preferably 50-200mm, and it is big 30-100mm which than cylinder of rotary kiln 100 is radially expanded value, returns
Rotary kiln cylinder 100 refractory insulating layer 500 can continuous rotary without grazing refractory insulating layer 500.
In specific embodiment, 500 thickness 5-30mm of refractory insulating layer, preferred 150-250mm in other embodiment.
Refractory insulating layer 500 uses fire resistant heat preserving siliceous material.100 surrounding of cylinder of rotary kiln is thick refractory insulating layer
500, preferably siliceous resistance to material, thickness 150-300mm, preferably 250mm.
The outside of kiln external heating device 300 is further fixedly arranged on heating compartment 520, and refractory insulating layer 500 is set to heating
Babinet 520.It is gasification stove heat that kiln external heating device 300 one by one is arranged as required in heating compartment 520.
As shown in figure 5, kiln external heating device 300 includes the kiln external heat storehouse 310 for being set to 100 lateral wall of cylinder of rotary kiln
With the calandria being placed in kiln external heat storehouse 310.
Calandria can be electrical heating or gas heating, and Elema or Si-Mo rod or heating wire may be used in electrical heating, combustion
Natural gas or other combustion gas may be used in gas heating.
In specific embodiment, kiln external heat storehouse 310 is changed on the outside of brickkiln cylinder and radial section is square around being set to, and is returned
Rotary kiln cylinder 100 is set to centre.
As shown in figure 5, calandria is electrical bar 320, each kiln external heat storehouse 310 is provided with multiple electrical bars 320, each
The middle part of electrical bar 320 is heating part, and the both ends of each electrical bar 320 are electric connecting terminal, and electric connecting terminal passes through refractory insulating layer
500 connect with power supply.
Refractory insulating layer 500 is fastened on heating compartment 520.Electrical bar 320 is come respectively outside cylinder of rotary kiln 100 and kiln
Below between heating cabinet 310 and above.The middle part of electrical bar 320 can give off heat, and both ends will not generate heat, electrical bar 320
Both ends pass through refractory insulating layer 500, expose end and are connect with power cord.
As shown in figure 5, it includes oxygen cathete 410 to send oxygen device 400, the oxygen supply end 420 of oxygen cathete 410 is worn from feed end 120
It crosses dry distillation area 111 and extends to zoneofoxidation 112, oxygen supply end 420 is manufactured using corundum material.
It is manufactured using corundum material, and non-metallic material, metal material are easy to melt.The oxygen supply end 420 of oxygen cathete 410 must
It must be corundum class material.Because oxygen, which is mixed and burned after spraying with imflammable gas, oxidation reaction occurs with steel pipe, temperature can
Up to 2500 DEG C, heat resisting steel can be melted in or so half an hour.Steel pipe will not be made to melt quickly if being sent into air, but the work that gasifies
Skill requires cannot have too many nitrogen to be mixed into, so oxygen can only be sent into.
It further includes delivery main to send oxygen device 400, and delivery main stretches into zoneofoxidation 112, delivery main across feed end 120
Inside it is provided with oxygen cathete 410, cooling water pipeline and continuous ignition pipeline.
Oxygen is to be sent into zoneofoxidation 112 from the feed end 120 of gasification furnace rotary kiln.Open one in the center of kiln head cover 122
Hole, delivery main stretch into burner hearth 110, and dry distillation area 111 is passed through to arrive at zoneofoxidation 112.It is disposed with oxygen cathete in the delivery main
410, cooling water pipeline, continuous ignition pipeline and the pipeline for placing thermocouple.Continuous ignition pipeline can prevent open fire extinguishing from leading
Imflammable gas is caused to gather and detonation.
As shown in figure 4, the inner wall of cylinder of rotary kiln 100 is provided with raising material unit 600, raising material unit 600 includes a plurality of raises
Flitch；It is provided with avoiding space between lifting blade and oxygen cathete 410.
The heat of kiln external heat storehouse 310, electrical heating or gas heating, by cylinder of rotary kiln 100 and is welded in cylinder
Lifting blade be conducted to 110 material of burner hearth, that is, generate outer fuel factor.
In order to make oxygen cathete 410 be suspended in the center of zoneofoxidation 112 without encountering the lifting welded in cylinder of rotary kiln 100
Plate, 122 external oxygen catheter 410 of kiln head cover are provided with counterweight, and it is flat that counterweight makes oxygen cathete 410 be suspended from 100 center holding of cylinder of rotary kiln
Weighing apparatus, it is ensured that oxygen cathete 410 will not encounter lifting blade.122 external oxygen catheter of kiln head cover, 410 connecting valve and oxygen system.
In specific embodiment, the material of lifting blade is heat resisting steel, and lifting blade uses L-type, lifting blade and cylinder of rotary kiln 100
Isometric, the axial direction along cylinder of rotary kiln 100 is welded on cylinder of rotary kiln 100, and loudspeaker are formed with cylinder of rotary kiln 100
Mouthful, can turn round with cylinder of rotary kiln 100, the material Tapes of burner hearth 110 is lifted to raise again fall, make 110 material of burner hearth formation turbulent flow
Degree, Micro Fluid state.The total 6-20 items of lifting blade, preferably 6-12 items in other embodiment.Width is 40-600mm, other embodiment
In preferably 50-350mm.
As shown in figure 4, feed end 120 is provided with screw conveyor 700, the input terminal of screw conveyor 700 passes through charging
End 120 extends to dry distillation area 111.
It there also is provided screw conveyor 700 on kiln head cover 122, be arranged in the side of oxygen cathete 410, after drying is crushed
Fuel be sent into dry distillation area 111.
Screw conveyor 700 is provided with the first spiral reamer section and the second spiral reamer section, the first spiral reamer section and
Unloaded section is provided between two spiral reamer sections, unloaded section and the feed inlet of feed end 120 are correspondingly arranged.
After drying is broken to it is aqueous be less than 15% solid biomass and coal, by screw conveyor 700 from kiln head cover
122 are sent into gasification furnace dry distillation area 111.As soon as what screw conveyor 700 stretched into kiln head cover 122 section is not provided with spiral reamer,
It is unloaded section, the length of unloaded section can be 20cm-100cm, preferably 40-80cm.The fuel of unloaded section, which relies on, spiral hinge
The spiral thrust of knife section (the first spiral reamer) squeezes into burner hearth 110, and fuel plays external seal in furnace body because of compacting herein
Effect.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of dual-heating type is without catalyzing and synthesizing methane gasification furnace, which is characterized in that including cylinder of rotary kiln, kiln external heating device and
Send oxygen device；
The both ends of the cylinder of rotary kiln are respectively feed end and discharge end, and the inside of the cylinder of rotary kiln is burner hearth, described
Burner hearth is disposed with dry distillation area, zoneofoxidation and reducing zone from the feed end to the discharge end；
The corresponding cylinder of rotary kiln of the zoneofoxidation and the reducing zone use heat-resisting material, the zoneofoxidation and it is described also
A kiln external heating device, the kiln external heating device energy is respectively set on the outside of the corresponding cylinder of rotary kiln in former area
Enough by the heat-resisting material to heat supply in the burner hearth；It is described to send oxygen device for being supplied oxygen to the zoneofoxidation.
2. dual-heating type according to claim 1 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that the dry distillation area corresponds to
The cylinder of rotary kiln also use heat-resisting material, be also provided with one on the outside of the corresponding cylinder of rotary kiln in the dry distillation area
The kiln external heating device.
3. dual-heating type according to claim 2 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that the cylinder of rotary kiln
Outside be provided with refractory insulating layer, be provided between the refractory insulating layer and the cylinder of rotary kiln cylinder expansion evacuation
Chamber, the kiln external heating device are set to the cylinder expansion evacuation chamber.
4. dual-heating type according to claim 3 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that the additional hot charging of kiln
The calandria set the kiln external heat storehouse including being set to the cylinder of rotary kiln lateral wall and be placed in kiln external heat storehouse.
5. dual-heating type according to claim 1 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that described to send oxygen device packet
Oxygen cathete is included, the oxygen supply end of the oxygen cathete extends to the zoneofoxidation, the confession from the feed end across the dry distillation area
Oxygen end is manufactured using corundum material.
6. dual-heating type according to claim 1 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that the feed end setting
There are screw conveyor, the input terminal of the screw conveyor to extend to the dry distillation area across the feed end.
7. dual-heating type according to claim 6 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that the screw conveyor
Be provided with the first spiral reamer section and the second spiral reamer section, the first spiral reamer section and the second spiral reamer section it
Between be provided with unloaded section, the zero load section and the feed inlet of the feed end are correspondingly arranged.
8. dual-heating type according to claim 4 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that the calandria is electricity
Hot pin or heating wire, each kiln external heat storehouse are provided with multiple electrical bars or heating wire, each electrical bar or
The middle part of heating wire is heating part, and the both ends of each electrical bar or heating wire are electric connecting terminal, and the electric connecting terminal passes through
The refractory insulating layer is connect with power supply.
9. dual-heating type according to claim 5 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that described to send oxygen device also
Including delivery main, the delivery main stretches into the zoneofoxidation across the feed end, is arranged in the delivery main
State oxygen cathete, cooling water pipeline and continuous ignition pipeline.
10. dual-heating type according to claim 5 is without catalyzing and synthesizing methane gasification furnace, which is characterized in that the rotary kiln cylinder
The inner wall of body is provided with raising material unit, and the raising material unit includes a plurality of lifting blade；Between the lifting blade and the oxygen cathete
It is provided with avoiding space.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108048141A (en) * | 2018-01-16 | 2018-05-18 | 史金麟 | Dual-heating type is without catalyzing and synthesizing methane gasification furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048141A (en) * | 2018-01-16 | 2018-05-18 | 史金麟 | Dual-heating type is without catalyzing and synthesizing methane gasification furnace |
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Effective date of registration: 20220727 Address after: 518100 wanguocheng 7fa09, No. 9, Pingji Avenue, LiLang community, Nanwan street, Longgang District, Shenzhen, Guangdong Province Patentee after: Shenzhen Jiaxin Quantum Technology Group Co.,Ltd. Address before: 213000 unit three, 4 workers' new village, Liyang, Changzhou, Jiangsu Patentee before: Shi Jinlin |
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