CN107629820A - A kind of gasification furnace and gasification process suitable for pluralities of fuel co-gasification - Google Patents
A kind of gasification furnace and gasification process suitable for pluralities of fuel co-gasification Download PDFInfo
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- CN107629820A CN107629820A CN201710868210.6A CN201710868210A CN107629820A CN 107629820 A CN107629820 A CN 107629820A CN 201710868210 A CN201710868210 A CN 201710868210A CN 107629820 A CN107629820 A CN 107629820A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
A kind of gasification furnace suitable for pluralities of fuel co-gasification,Gasification furnace body lower end is provided with dreg removing system,The main burner being connected with vaporizer is provided with gasification furnace body different level,Pilot jet and temperature gaging hole,Pyrometer couple is arranged in pairs or groups in temperature gaging hole to monitor gasification furnace internal temperature,Gasification process of the present invention,Two-stage is divided to start gasification furnace,Advance heating and gasifying room is to assigned temperature,Gasification reaction is carried out from main burner input material,Gas yield to be synthesized reaches maintenance level,Auxiliary fuel is put into from pilot jet,The present invention can gasify not same fuel simultaneously,Improve adaptability and flexibility of the gasification furnace for fuel,For high ash content high ash melting point coal seed and biomass,Municipal sludge and specific industry solid waste,It need not in advance mix and match somebody with somebody,Supply is also without continuous,This is for being difficult to biomass without interruption of guaranteeing both quality and quantity,The processing tool of municipal sludge has great advantage.
Description
Technical field
The invention belongs to gasification system technical field, more particularly to a kind of gasification furnace suitable for pluralities of fuel co-gasification
And gasification process.
Background technology
Gasification is by (including but is not limited to oxygen, hydrogen, sky with gasifying agent by a kind of solid or liquid fuel
Gas and water steam etc.) chemically reacted, producing synthesis gas, (key component includes CO, H2、CH4) process.Closed caused by gasification
Into gas through purification process such as dry method dust, wet scrubbing, desulfurization, the synthesis gas supply combustion and steam that can prepare cleaning is combined and followed
Ring electricity generation system uses.This gasifying electricity generation flow avoids traditional a large amount of dust directly caused by combustion power generation, while thermal effect
Rate is also higher, and the pollutant of discharge is also less.Industrialized gasification technology mainly has the side such as fixed bed, fluid bed and air flow bed
Formula, wherein air flow bed are the main flows of current Coal Gasification Technology development, have that gasification temperature is high, and vapor pressure is high, single stove processing energy
The features such as power is big.To ensure gasification efficiency, gasification furnace interior reaction temperature is generally greater than the fusing point of lime-ash in fuel, so air flow bed
Gasification furnace uses slag tap mode more.It is different according to the feeding manner of use, there are point of water-coal-slurry and dry pulverized coal, water-coal-slurry gas
Change and require that the pulpability of fuel will get well that (for example, for coal slurry, 60%) its concentration should be not less than, firebrick structure then requires
The ash fusion point of fuel is low (being generally no greater than 1400 DEG C), and dry powder gasification is then without the limitation of slurry performance, water wall structure
It is suitable for the fuel that ash fusion point is up to 1600~1700 DEG C.To improve gasification furnace fuel tolerance, then dry-coal feeding is suitably used,
The gasification furnace of water wall structure.Yet with the complicated component of coal, impurity content is also higher, and particularly Coal rank ash content contains
Amount, ash fusion point, Slag-formation characteristics etc. differ, general it is not recommended that changing coal, Huo Zhexu in order to ensure the smooth deslagging of gasification furnace
Will be according to the accurate coal blending of coal characteristic, this just counteracts dry pulverized coal charging, and the coal adaptability of the gasification furnace of water wall structure is strong
Advantage.On the other hand, because directly burning can cause the discharge of a large amount of fine particles, with the gradual increasing of current environmental protection pressure
Greatly, annual caused a large amount of biomass and the aqueous solid of municipal sludge and specific industry (including but not limited to coking) give up
Then there is an urgent need to the solution of indirect burning for the high-efficiency environment friendly processing of thing.And gasify due to high with the thermal efficiency, pollution is small
And a kind of method of suitable indirect burning as processing biomass, municipal sludge and specific industry solid waste, but
It is due to biomass, the volatile matter content such as municipal sludge and other specific industry solid waste is high, and independent gasification temperature is relatively low, leads
Cause tar content in gasification product more.
The content of the invention
For above-mentioned two aspects problem, that is, the adaptability of coal is improved, particularly uses high ash content high ash melting point coal seed, with
And the high-efficiency gasification of biomass, municipal sludge and specific industry solid waste, the present invention propose to utilize more ripe coal gas
Change scheme, widen it and for example high ash content high-ash-fusion coal of solid fuel, biomass, municipal sludge and other specific industry solids are given up
The gasification furnace configuration and the gasification process for these fuel of the adaptability of the fuel such as thing.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of gasification furnace suitable for pluralities of fuel co-gasification, gasification furnace body lower end is provided with dreg removing system, its
It is characterised by, is provided with what is be connected with vaporizer 93 at gasification furnace body different level：
Main burner 11, for putting into main fuel to vaporizer 93；
Pilot jet, for putting into auxiliary fuel to vaporizer 93；
And
Temperature gaging hole, collocation pyrometer couple to monitor main burner 11 in gasification furnace and the temperature at pilot jet, from
And speed is put into according to temperature adjustment.
The gasification furnace body is cylindrical shape, by the vaporizer inside the bearing shell 91 and bearing shell 91 concentrically justified
93 are formed, and vaporizer 93 is the Primary containers that gasification reaction occurs with gasifying agent for fuel.Bearing shell 91 and vaporizer 93 it
Between press close to the outer wall of vaporizer 93 and be provided with water-cooling wall 92, the side that vaporizer 93 is pressed close in water-cooling wall 92 is covered with refractory masses
94。
At same absolute altitude, multiple main burners 11 are circumferential to be arranged symmetrically, and at same absolute altitude, multiple pilot jets are circumferentially right
Claim arrangement.
The main burner 11 and pilot jet are horizontally disposed；Or the main burner 11 is horizontally disposed, the auxiliary spray
Mouth tilts down certain angle and arranged, preferably 15 °.
The main burner 11 and pilot jet use double-layer sleeve structure, and the port of export is pyramidal structure, is fuel in inner cylinder
Passage 101, it is gasifying agent passage 102 between inner cylinder and outer barrel, fuel swirl piece 103 is set in the nozzle of fuel channel 101,
The nozzle of gasifying agent passage 102 sets gasifying agent spinning disk 104, to increase the stop of fuel and gasifying agent inside gasification furnace
Time.
The main burner 11 arranges one layer, and the pilot jet is arranged two layers, is positioned at the upper of the top of main burner 11 respectively
Layer pilot jet 12 and lower floor's pilot jet 10 positioned at the lower section of main burner 11, the temperature gaging hole are arranged two layers, are position respectively
Lower temperature gaging hole 51 between main burner 11 and lower floor's pilot jet 10 and the upper temperature above upper strata pilot jet 12
Gaging hole 52.
The temperature gaging hole is through water-cooling wall 92 until the outer surface of refractory masses 94, described one end of temperature gaging hole liner
The high temperature resistant steel pipe 53 of portion's closing, the gap between high temperature resistant steel pipe 53 and temperature gaging hole is sealed with graphite.
Present invention also offers the gasification process based on the gasification furnace suitable for pluralities of fuel co-gasification, divide two-stage
Start the gasification furnace, comprise the following steps that：
Advance heating and gasifying room 93 puts into material from main burner 11 and gasified to assigned temperature, preferably 1300-1500 DEG C
Reaction, the yield of gas 39 to be synthesized reach maintenance level, i.e., fluctuation is less than 5%, while slag 40 can be smoothly from gasification furnace bottom
Discharge, then put into auxiliary fuel from pilot jet, and input speed is adjusted according to the temperature measured from temperature gaging hole.
The auxiliary fuel includes high ash content high-ash-fusion coal and solid waste, and the high ash content high-ash-fusion coal is from lower floor
Pilot jet 10 is gradually put into, and the solid waste is gradually put into from upper strata pilot jet 12, and input speed is according to from upper temperature
The temperature that gaging hole 51 and lower temperature gaging hole 52 measure is adjusted, and keeps the two measuring point temperature fluctuations to be not more than 5%.
The auxiliary fuel accounts for total quality of fuel and compares yauxFollowing functional relations should be met：
In formula, QpFor the unit mass caloric value of main bunker coal, QauxTo be conversion auxiliary fuel unit mass heating
Amount, for variety classes auxiliary fuel, need to be converted its caloric value using linear relationship, i.e. Qaux=xQ, x are for conversion
Number, Q is the true unit mass caloric value of auxiliary fuel.
Compared with prior art, the present invention improves gasification furnace for the suitable of fuel on the basis of existing gasification technology
Answering property and flexibility, in particular improve for some high ash content high ash melting point coal seeds, and biomass, municipal sludge and spy
Determine the adaptability of industry solid waste, it is not necessary to mix match somebody with somebody in advance.For high ash content high ash melting point coal seed, and biomass, city
The supply of sludge and specific industry solid waste has the supply of these fuel to put into fortune at any time also without continuous at any time
OK, even if these fuel shutofves, the safe operation of gasification furnace is nor affected on, this is for being difficult to biology without interruption of guaranteeing both quality and quantity
Matter, the processing tool of municipal sludge have great advantage.
Brief description of the drawings
Fig. 1 is gasification furnace structure schematic diagram of the present invention.
Fig. 2 is arrangement of nozzles floor map of the present invention.
Fig. 3 is pilot jet arrangement schematic diagram of the present invention.
Fig. 4 is temperature gaging hole schematic diagram of the present invention.
Fig. 5 is gasification furnace interior flow field schematic diagram of the present invention.
Fig. 6 is gasification furnace internal temperature field schematic diagram of the present invention.
Fig. 7 is gasification furnace Starting mode schematic diagram of the present invention.
Embodiment
Describe embodiments of the present invention in detail with reference to the accompanying drawings and examples.
A kind of gasification furnace suitable for pluralities of fuel co-gasification of the invention, gasification furnace body lower end is provided with deslagging system
System, the main burner 11 being connected with vaporizer 93, pilot jet and temperature gaging hole are provided with gasification furnace body different level,
Pyrometer couple is arranged in pairs or groups in temperature gaging hole to monitor gasification furnace internal temperature.
Specifically can be as shown in figure 1, gasification furnace body be cylindrical shape, by the bearing shell 91 and bearing shell 91 concentrically justified
Internal vaporizer 93 is formed, and vaporizer 93 is the Primary containers that gasification reaction occurs with gasifying agent for fuel.In bearing shell 91
And press close to the outer wall of vaporizer 93 between vaporizer 93 and be provided with water-cooling wall 92, the side that vaporizer 93 is pressed close in water-cooling wall 92 is covered with
Refractory masses 94.
In the present embodiment, main burner 11 arranges one layer, and pilot jet is arranged two layers, is positioned at the top of main burner 11 respectively
Upper strata pilot jet 12 and lower floor's pilot jet 10 positioned at the lower section of main burner 11, temperature gaging hole is arranged two layers, under being located at respectively
The upstream of layer pilot jet 10 and upper strata pilot jet 12, it is positioned at main burner 11 and lower floor's pilot jet 10 respectively specifically
Between lower temperature gaging hole 51 and the upper temperature gaging hole 52 above upper strata pilot jet 12.Each residing for lower temperature gaging hole 51
Position should be able to accurately reflect the temperature change of lower floor's pilot jet 10, and each the upper present position of temperature gaging hole 52 should be able to accurately reflect
The temperature change of upper strata pilot jet 12.
As shown in Fig. 2 main burner 11 and pilot jet are arranged symmetrically using circumferential, i.e. at same absolute altitude, four sprays
Mouth is respectively separated 90 ° of angles and is arranged on gasification furnace outer wall circumference (as shown in Figure 2 a), or two nozzle pitch, 180 ° of angle arrangements
On gasification furnace outer wall circumference (as shown in Figure 2 b).As an example, as shown in figure 1, upper strata pilot jet 12 and lower floor are auxiliary
Nozzle 10 is helped to be respectively arranged at a certain distance from main burner is about 11, can be horizontally disposed.In addition, pilot jet can also use
Arrangement as shown in Figure 3, that is, tilt down certain angle, such as 15 °.
The internal structure of main burner 11 and pilot jet of the present invention is as shown in figure 3, using double-layer sleeve structure, the port of export is
Pyramidal structure, it is fuel channel 101 that inner cylinder is interior, is gasifying agent passage 102 between inner cylinder and outer barrel, in the spout of fuel channel 101
Place sets fuel swirl piece 103, gasifying agent spinning disk 104 is set in the nozzle of gasifying agent passage 102, to increase fuel and gas
Residence time of the agent inside gasification furnace.
Reference picture 4, temperature gaging hole of the present invention is through water-cooling wall 92 until vaporizer (is pressed close in the outer surface of refractory masses 94
93), in the hope of accurate measurement gasification furnace internal temperature of trying one's best.Simultaneously in order to prevent lime-ash from condensing upon high temperature thermoelectric doll head, cause
Thermocouple break, the high temperature resistant steel pipe 53 of one end-enclosed of temperature gaging hole liner, between high temperature resistant steel pipe 53 and temperature gaging hole
Gap sealed with graphite.
The present invention first sprays main fuel coal from main burner 11 and gasifying agent enters gasification by the way of feeding respectively
Gasification reaction occurs for room 93, releases amount of heat, while in the plane of main burner 11 recirculation zone formed below, then respectively from lower floor
Pilot jet 10 sprays the high ash content high-ash-fusion coal of auxiliary fuel and corresponding gasifying agent, makes full use of main fuel gasification production
Gasification reaction occurs for raw high temperature, and due to the recirculation zone below the plane of main burner 11 and lower floor's pilot jet 10 to
Lower inclination and the influence of spinning disk, add residence time of the high ash content high-ash-fusion coal of auxiliary fuel in this region so that auxiliary
Volatile matter in the combustion-supporting high ash content high-ash-fusion coal of material removes completely as far as possible, and fixed carbon is also exhausted as far as possible, so raw
Into slag can largely control below the plane of main burner 11, so as to smoothly from gasification furnace discharge.Because biomass, city are dirty
Mud and other specific industry solid waste are more containing volatile matter, and fixed carbon content is less, and the more common kinds of coals for gasification of its caloric value is low,
Individually gasify easy coking, then vaporizer 93, while corresponding gasifying agent can be injected into by upper strata pilot jet 12
It can be injected into via upper strata pilot jet 12, can thus make full use of this region high as caused by gasifying main fuel
Temperature, simultaneously because upper strata pilot jet 12 tilt down and the influence of spinning disk, also increase these fuel in this region
Residence time, it devolatilization as complete as possible and can be gasified totally, avoid coking, while again will not be relatively low because of caloric value
And main fuel gasification is caused to have a strong impact on.
With reference to figure 7, the present invention use the method for operation of gasification furnace shown in Fig. 1 for：Gasification furnace main fuel is coal, preferably dry
Dry ash free basis volatile matter (Vdaf) content be 30%-40% bituminous coal, ash fusibility temperature (FT) be not higher than 1250 DEG C, preferably 1210
℃.Auxiliary fuel can select high ash content high ash melting point coal seed, i.e. content of ashes (Aar) it is more than 20wt%, ash fusibility temperature (FT)
More than 1300 DEG C, less than 1500 DEG C, or biomass, municipal sludge and other specific industry (including but not limited to coking) solids
Waste.Gasification furnace main fuel coal is dried, and grinds certain fineness, is stored in fine coal bunker.Gasification furnace main fuel fine coal is put down
Equal diameter must be less than 100 μm, and water content must be less than 2wt%.By the high ash content high-ash-fusion coal of gasification furnace auxiliary fuel, biomass,
Municipal sludge or other specific industry solid waste equally grind certain fineness and are stored in bunker, should be fitted for auxiliary fuel fineness
When the fineness less than main fuel coal.With inert gas (N2Or CO2) transport the main fuel fine coal warp for having ground certain fineness
Vaporizer 93, while gasifying agent O are entered by the fuel channel injection of gasification furnace main burner 112, H2O is equally via gasification furnace main jet
Gasifying agent channel injection enters vaporizer 93 in mouth 11, gasification operation pressure 2.5-3.5MPa, preferably 3MPa, coal dust and gasifying agent
Chemical reaction generation occurs inside gasification furnace with CO, H2For the synthesis gas of main component, while discharge a large amount of heat energy.Gasification furnace
Internal gas flow situation is as shown in figure 5, gasification furnace internal temperature is distributed such as Fig. 6 institutes along gasification furnace central axis relative altitude
Show, it is seen then that at a certain distance from main burner 11 (relative altitude about 0.13) upper and lower, gas has been respectively formed larger recirculating zone
Domain, this region gasification temperature are higher than 1400 DEG C.Auxiliary fuel is equally with inert gas (N2Or CO2) transport via gasification furnace
Lower floor's pilot jet 10, the fuel channel injection of upper strata pilot jet 12 enter vaporizer 93, while gasifying agent O2, H2O is via gas
Gasifying agent channel injection enters vaporizer 93 in Hua Lu lower floors pilot jet 10, upper strata pilot jet 12, and auxiliary fuel is main
Under high temperature action caused by fuel gasification, gasification reaction generation synthesis gas can occur.High ash content high-ash-fusion coal can pass through
Lower floor's pilot jet 10 as shown in Figure 1 is with inert gas (N2Or CO2) transport and be injected into gasification furnace, corresponding gasifying agent
O2And H2Also gasifying agent channel injection enters vaporizer 93 to O out of this nozzle, because lower floor's pilot jet 10 has spinning disk, and
The angle of lower floor's pilot jet 10 also slopes slightly downward, -15 ° of preferred nozzle center line level angle so that auxiliary fuel is gasifying
Stove bottom (relative altitude is less than 0.12) residence time increase, and because main fuel is through the downward of the injection formation of main burner 11
The backflow of side, the residence time of the high ash content high-ash-fusion coal of auxiliary fuel is added, made full use of caused by main fuel gasification
High temperature so that the volatile matter in the high ash content high-ash-fusion coal of auxiliary fuel removes completely as far as possible, and fixed carbon also consumes as far as possible
Finishing, the slag so generated can be largely controlled below the plane of main burner 11, because this regional temperature is higher than 1400 DEG C, ash
Fusion temperature (FT) will be in liquid form along gasification furnace interior wall less than slag caused by the high ash content high-ash-fusion coal of this temperature
Discharge, if ash fusibility temperature (FT) is higher than this temperature, can be added suitably in high ash content high-ash-fusion coal certain downwards
Fluxing agent, preferred lime stone, to reduce the fusion temperature of lime-ash.Due to biomass, municipal sludge and other specific industries are consolidated
Body waste is more containing volatile matter, and fixed carbon content is less, therefore the more common kinds of coals for gasification of caloric value is low, then can be from such as Fig. 1 institutes
The fuel passage of upper strata pilot jet 12 shown is with inert gas (N2Or CO2) transport and be injected into vaporizer 93, corresponding gas
Agent O2And H2Also gasifying agent channel injection enters vaporizer 93 to O out of this nozzle, makes full use of this region to be gasified by main fuel
Caused high temperature, simultaneously because upper strata pilot jet 12 tilts down (- 15 ° of preferred nozzle center line level angle) and eddy flow
The influence of piece, biomass, municipal sludge and other residence times of specific industry solid waste in this region also increase, can
Devolatilization as complete as possible is simultaneously gasified totally, and avoids coking, at the same again will not because caloric value is relatively low and to main fuel
Gasification causes to have a strong impact on.The particular location of upper strata pilot jet 12 is preferably arranged on main fuel efficiency of carbon con version close to 100%
Position, i.e., gasification furnace relative altitude 0.38 or so shown in Fig. 1.
The Starting mode of gasification furnace is divided into two-stage startup, i.e., advance heating and gasifying room 93 to assigned temperature, preferably 1300-
1500 DEG C, put into the material such as fine coal and oxygen, water vapour from main burner 10 and carry out gasification reaction, the yield of gas 39 to be synthesized reaches steady
Fixed level, i.e. fluctuation are less than 5%, while slag 40 can be discharged smoothly from gasification furnace bottom, then can be from lower floor's pilot jet
10 gradually put into high ash content high-ash-fusion coal, while can also gradually put into biomass, municipal sludge from upper strata pilot jet 12
And other specific industry solid waste.Auxiliary fuel should via the input speed of lower floor's pilot jet 10, upper strata pilot jet 12
Temperature according to being measured from lower temperature gaging hole 51, upper temperature gaging hole 52 is adjusted, and keeps the two measuring point temperature fluctuations little
In 5%.Monitoring slag discharge situation is additionally needed, especially for the input of high ash content high-ash-fusion coal, therefore, to assure that slag
Can smoothly it discharge.
In order to reach gasification efficiency highest, while level of the efficiency of carbon con version close to 100% is, it is necessary to limit auxiliary fuel and master
Want the ratio of fuel.Auxiliary fuel accounts for total fuel mass fraction yauxFollowing relationship need to be met
In formula, QpFor the unit mass caloric value of main bunker coal, QauxTo be conversion auxiliary fuel unit mass heating
Amount, for variety classes auxiliary fuel, it is necessary to which its caloric value is converted, can use simple linear relationship, i.e. Qaux=
XQ, x are conversion factor, and Q is the true unit mass caloric value of auxiliary fuel.
Claims (10)
1. a kind of gasification furnace suitable for pluralities of fuel co-gasification, gasification furnace body lower end is provided with dreg removing system, it is special
Sign is, is provided with what is be connected with vaporizer (93) at gasification furnace body different level：
Main burner (11), for putting into main fuel to vaporizer (93)；
Pilot jet, for putting into auxiliary fuel to vaporizer (93)；
And
Temperature gaging hole, pyrometer couple is arranged in pairs or groups to monitor the temperature at main burner in gasification furnace (11) and pilot jet.
2. it is applied to the gasification furnace of pluralities of fuel co-gasification according to claim 1, it is characterised in that the gasification furnace stove
Body is cylindrical shape, is made up of the internal vaporizer (93) of the bearing shell (91) and bearing shell (91) concentrically justified, in pressure-bearing
Press close to vaporizer (93) outer wall between shell (91) and vaporizer (93) and be provided with water-cooling wall (92), press close to gas in water-cooling wall (92)
The side for changing room (93) is covered with refractory masses (94).
3. it is applied to the gasification furnace of pluralities of fuel co-gasification according to claim 1, it is characterised in that in same absolute altitude
Place, multiple main burners (11) are circumferentially arranged symmetrically, and at same absolute altitude, multiple pilot jets are circumferentially arranged symmetrically.
4. it is applied to the gasification furnace of pluralities of fuel co-gasification according to claim 1 or 3, it is characterised in that the main jet
Mouth (11) and pilot jet are horizontally disposed；Or the main burner (11) is horizontally disposed, the pilot jet tilts down one
Determine angle arrangement.
5. it is applied to the gasification furnace of pluralities of fuel co-gasification according to claim 1 or 3, it is characterised in that the main jet
Mouth (11) and pilot jet use double-layer sleeve structure, and the port of export is pyramidal structure, are fuel channel (101) in inner cylinder, inner cylinder
It is gasifying agent passage (102) between outer barrel, fuel swirl piece (103) is set in fuel channel (101) nozzle, in gasifying agent
Passage (102) nozzle sets gasifying agent spinning disk (104), during increasing the stop of fuel and gasifying agent inside gasification furnace
Between.
6. it is applied to the gasification furnace of pluralities of fuel co-gasification according to claim 1 or 3, it is characterised in that the main jet
Mouth (11) arranges one layer, and the pilot jet is arranged two layers, is the upper strata pilot jet above main burner (11) respectively
(12) lower floor's pilot jet (10) and below main burner (11), the temperature gaging hole are arranged two layers, are positioned at master respectively
Lower temperature gaging hole (51) between nozzle (11) and lower floor's pilot jet (10) and upper above upper strata pilot jet (12)
Temperature gaging hole (52).
7. it is applied to the gasification furnace of pluralities of fuel co-gasification according to claim 1, it is characterised in that the temperature gaging hole
Through water-cooling wall (92) until refractory masses (94) outer surface, the high-temperature steel of one end-enclosed of the temperature gaging hole liner
Manage (53), the gap between high temperature resistant steel pipe (53) and temperature gaging hole is sealed with graphite.
8. the gasification process based on the gasification furnace for being applied to pluralities of fuel co-gasification described in claim 1, it is characterised in that point
Two-stage starts the gasification furnace, comprises the following steps that：
Advance heating and gasifying room (93) carries out gasification reaction, gas to be synthesized to assigned temperature from main burner (11) input material
(39) yield reaches maintenance level, i.e., fluctuation be less than 5%, while slag (40) can smoothly from gasification furnace bottom discharge, then from
Pilot jet puts into auxiliary fuel, and input speed is adjusted according to the temperature measured from temperature gaging hole.
9. gasification process according to claim 8, it is characterised in that the auxiliary fuel include high ash content high-ash-fusion coal and
Solid waste, the high ash content high-ash-fusion coal are gradually put into from lower floor's pilot jet (10), and the solid waste is auxiliary from upper strata
Nozzle (12) is helped gradually to put into, input speed is carried out according to the temperature measured from upper temperature gaging hole (51) and lower temperature gaging hole (52)
Regulation, the two measuring point temperature fluctuations are kept to be not more than 5%.
10. gasification process according to claim 8 or claim 9, it is characterised in that the auxiliary fuel accounts for total quality of fuel ratio
yauxFollowing functional relations should be met：
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<mo>&le;</mo>
<mn>0.5</mn>
<mo>&times;</mo>
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<mi>Q</mi>
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In formula, QpFor the unit mass caloric value of main bunker coal, QauxTo be conversion auxiliary fuel unit mass caloric value, for
Variety classes auxiliary fuel, its caloric value need to be converted using linear relationship, i.e. Qaux=xQ, x are conversion factor, supplemented by Q
The combustion-supporting true unit mass caloric value of material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237514A (en) * | 2018-08-08 | 2019-01-18 | 中国华能集团有限公司 | A kind of dual circuit gaseous fuel burners for gas turbines |
| CN110129098A (en) * | 2019-05-28 | 2019-08-16 | 西北化工研究院有限公司 | It is a kind of to use the one-jet gasification process containing feedstock hydrocarbon of overhead multiple flow passages |
| CN117928220A (en) * | 2024-03-19 | 2024-04-26 | 淄博煜鼎新材料科技有限公司 | Red mud-based ceramic product sintering roller kiln |
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