CN104987888B - A kind of gasification process of radially fixed bed gasification furnace, its application and carbonaceous material - Google Patents
A kind of gasification process of radially fixed bed gasification furnace, its application and carbonaceous material Download PDFInfo
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Abstract
The present invention discloses the gasification process of a kind of radially fixed bed gasification furnace, its application and carbonaceous material, and the gasification furnace includes a body of heater and an at least breather line；The body of heater includes an inner layer sleeve, and one seals the outer layer sleeve for being arranged, being formed an interlayer cavity with the inner layer sleeve；The bottom of the inner layer sleeve is provided with least one air inlet；The side wall of the inner layer sleeve in the interlayer cavity is provided with least one through hole；The side wall of the outer layer sleeve is provided with a breather port；The breather line includes ventilation section and conveying gas section；The ventilation section and the conveying gas section are respectively provided with a head end and a tail end, and the tail end of the conveying gas section runs through the body of heater；The ventilation section is in inner layer sleeve and axially arranged, and the ventilation section side wall is provided with an at least through hole.Carbonaceous material particle used in the radially fixed bed gasification furnace is smaller and bed pressure drop is suitable with radially fixed bed gasification furnace, environmental clean, production capacity is high, gasification efficiency is high.
Description
Technical field
The present invention relates to the gasification process of a kind of radially fixed bed gasification furnace, its application and carbonaceous material.
Background technology
Fixed-bed gasification furnace exists in China and uses decades, is a kind of traditional gasification installation, as
The Preparation equipment of industrial fuel coal gas, it is widely used in the industries such as metallurgy, ceramics, glass, chemical industry, non-ferrous metal.The type
Gasification furnace structure is simple, small investment, reliable, and operation is easier.According to incompletely statistics, the whole nation is currently in use normal
Pressure fixed-bed gasification furnace has nearly 30,000 sets, annual to consume nearly 500,000,000 tons of coal resources, is made that and can not grind for China's industrial expansion
The contribution gone out.
In existing fixed-bed gasification furnace, fuel and axial movement of the gasifying agent along gasification furnace.So in order to keep solid
The flowing of fixed bed gasification furnace gas, it is desirable to which fuel is bulk, typically requires that granularity is more than 6 millimeters, most of particle diameter concentrates on
Scope is 10~50 millimeters of section.Usual coal is added from top of gasification furnace, moves down, and experience is dried, is pyrolyzed, gas successively
Change, burning and ash bed, reacted lime-ash are discharged by bottom.Because air-flow flows from bottom to top, coal seam can be carried under one's arms in low temperature
Complicated product during pyrolysis, thus it is more containing pollutants such as phenols, tar in product raw gas, purification process is lengthened, is increased
Investment and cost.With the rapid development of Modern New coal chemical industry gasification technology, the shortcomings that original fixed bed gasification technology
It is more notable.National Development and Reform Committee proposes because of the consideration in terms of environmental protection within 2006：Coal chemical industry enterprises forbid checking and approving or putting on record use
Fixed-bed intermittent gasifies and the Coal Gasification Project of direct cooling technology.
In summary, China there is an urgent need to be upgraded to fixed-bed gasification furnace and transformed, and researches and develops new and effective at present
The fixed bed gasification technology of environmental protection；But because axial restraint bed gasification furnace is with a long history, those skilled in the art generated " Gu
Fixed bed gasification furnace is axial, and its is simple in construction, easy to use, and air-flow axially flows, and makes reaction very abundant, extremely suitable
Close coal gasification reaction " inertial thinking, to its Optimal improvements always based on existing axial restraint bed gasification furnace.
The content of the invention
Problem to be solved by this invention is to overcome carbonaceous material particle used in existing axial restraint bed gasification furnace
Larger, the seriously polluted, defect such as production capacity is low, gasification efficiency is low and provide a kind of radially fixed bed gasification furnace, its application
And the gasification process of carbonaceous material, carbonaceous material particle used in the radially fixed bed gasification furnace is smaller and bed pressure drop and radial direction are solid
Fixed bed gasification furnace is suitable, environmental clean, production capacity is high, gasification efficiency is high, and the gasification process is environmental clean, production capacity
High, gasification efficiency height.
The invention provides a kind of radially fixed bed gasification furnace, including a body of heater and an at least breather line；
The body of heater includes an inner layer sleeve, and one is arranged with inner layer sleeve sealing, forms an interlayer cavity
Outer layer sleeve；The top of the inner layer sleeve is provided with an entrance, and the bottom of the inner layer sleeve is provided with an outlet, the internal layer set
The bottom of cylinder is provided with least one air inlet；The side wall of the inner layer sleeve in the interlayer cavity is provided with least one
Through hole；The side wall of the outer layer sleeve is provided with a breather port；
The breather line includes ventilation section and conveying gas section；The ventilation section and the conveying gas section are respectively provided with a head end
With a tail end, the head end closing of the ventilation section, the tail end of the ventilation section connects with the head end of the conveying gas section, the biography
The tail end of gas transmission section runs through the body of heater；The ventilation section is in inner layer sleeve and axially arranged, the side wall of the ventilation section
Provided with least one through hole.
In the radially fixed bed gasification furnace, when the diameter of the inner layer sleeve is less than or equal to 1 meter, the breather pipe
Road can only have one；When the diameter of the inner layer sleeve is more than 1 meter, the quantity of the breather line is preferably multiple,
Related (the N ∝ D of square proportional example of its quantity and the inner layer sleeve diameter2, N is the quantity of breather line, and D is internal layer set
The diameter of cylinder), those skilled in the art, which know to be adjusted according to actual conditions, to be set.
In the radially fixed bed gasification furnace, it is preferred that the head end of the ventilation section is in upper, the tail end of the ventilation section
Under.
In the radially fixed bed gasification furnace, it is preferred that the breather port is located at the side wall of the outer layer sleeve
Top.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace also includes lock hopper, the lock
Bucket is located at the entrance.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace also includes distributor, it is described
Distributor is below the entrance.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace also includes locked slag bucket, it is described
Locked slag bucket is located at the outlet.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace also includes chuck, the folder
It is sheathed on the breather line；The chuck is provided with chuck gateway.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace does not include fire grate.
In the radially fixed bed gasification furnace, at least one air inlet that the bottom of the inner layer sleeve is provided with is used to add
Enter oxidant and participate in exothermic heat of reaction, so as to improve temperature herein so that solid ash is changed into liquid, realizes slag tap；Institute
Oxidant is stated as the conventional oxidant in this area, the preferably volume content of oxygen is 21%~100% gas, further preferably
Pure oxygen, still more preferably oxygen-enriched or air, pure oxygen.
In the radially fixed bed gasification furnace, it is preferred that through hole and the ventilation in the side wall of the inner layer sleeve
Through hole in the side wall of section staggers；Such set to cause one section by graininess to be consolidated at the top of radially fixed bed gasification furnace bed
The Axial and radial two-dimensional flow of body carbonaceous material self-sealing, this particle is self-styled can to prevent gas short circuit, will not form reaction again
Dead angle；It is preferred that the distance that the through hole staggers is more than 1 meter.
In the radially fixed bed gasification furnace, it is preferred that the diameter of the through hole in the side wall of the inner layer sleeve is less than
Use the diameter of granular solids carbonaceous material during the radially fixed bed gasification furnace progress gasification reaction.
In the radially fixed bed gasification furnace, make it is preferred that the diameter of the through hole in the side wall of the ventilation section is less than
The diameter of granular solids carbonaceous material when carrying out gasification reaction with the radially fixed bed gasification furnace.
In the radially fixed bed gasification furnace, it is preferred that through hole in the side wall of the inner layer sleeve and/or described logical
The set-up mode of through hole in the side wall of gas section is becomes percent opening set-up mode, i.e., in different position of opening, opening diameter with
Quantity is different, preferably：
The side wall upper part of the inner layer sleeve is preferably (such to set using larger opening diameter and more the number of openings
Put can be rapidly added oxidant improve reaction rate), and/or the inner layer sleeve lower sidewall using less perforate it is straight
(such setting can reduce reaction rate, and so design can improve the temperature on gasification furnace top for footpath and less the number of openings
Degree, reduces the temperature of bottom, so that gasifier temperature is evenly distributed, avoids the generation of tar etc., and protect reactor), from
And avoid overtemperature from damaging reactor, it is also possible to which a large amount of little particles enter institute caused by being crushed during avoiding material reaction
State ventilation section.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace also includes the first occlusion part
Part；Through hole (to cause through hole downwards open) of first blocking parts in the side wall of the inner layer sleeve, it is such
Setting can prevent solid particle from entering the interlayer cavity.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace also includes the second occlusion part
Part, through hole (to cause through hole downwards open) of second blocking parts in the side wall of the ventilation section are such to set
Putting can prevent solid particle from entering the ventilation section.
In the radially fixed bed gasification furnace, it is preferred that the radially fixed bed gasification furnace also includes refractory brick or water
Cold wall, the refractory brick or the water-cooling wall are located at inner layer sleeve；Such setting can tackle the high temperature in gasification furnace.
In the radially fixed bed gasification furnace, it is preferred that the inner layer sleeve is the inner layer sleeve of variable diameters；The change
The inner layer sleeve of diameter is the inner layer sleeve of the conventional variable diameters in this area, i.e., due to some special coal types after gasification reaction body
The larger expansion of product meeting occurrence degree, so needing gasification furnace base diameter to be slightly larger than top, those skilled in the art know tool
Body size need to be calculated by Rational Parameters such as the expansion rates of reactant.
Present invention also offers a kind of gasification process of carbonaceous material, is carried out using above-mentioned radially fixed bed gasification furnace, its
Comprise the following steps：
(1) granular solids carbonaceous material is filled in gasification cavity, the gasification cavity is by the breather line, institute
State the cavity that outlet and the inner layer sleeve surround；
(2) the granular solids carbonaceous material and gasifying agent are subjected to gasification reaction, you can；The gasifying agent steams for water
Gas and oxidant.
In the gasification process, the granular solids carbonaceous material is the conventional carbon containing thing of granular solids in this area
One or more in matter, preferably coal, petroleum coke, residual oil, pitch, biomass and sludge, more preferably coal.
In the gasification process, the oxidant is the conventional oxidant in this area, and the volume content of preferably oxygen is
21%~100% gas, further preferred pure oxygen, still more preferably oxygen-enriched or air, pure oxygen.
In the gasification process, it is preferred that the partial oxidant (can be located at gasification furnace by the air inlet
Inner layer sleeve bottom) enter, more preferably, the oxidant of 10% (volume ratio) can be entered by the air inlet；So
Method be used for participate in reaction and heat release, so as to improve temperature herein so that solid ash is changed into liquid, realize liquid arrange
Slag.
In the gasification process, the mass ratio of the oxygen in the vapor, with the oxidant is conventional for this area
Mass ratio, preferably 3.0~6.5.
In the gasification process, superficial gas velocity is apparent gas in the conventional gasification cavity in this area in the gasification cavity
The meter per second of speed, preferably 0.05 meter per second~1.
In the gasification process, the reaction temperature in the gasification chamber body is the conventional reaction temperature in this area, preferably
For 900 DEG C~2000 DEG C, more preferably 1000 DEG C~1800 DEG C.
In the gasification process, the operating pressure in the gasification chamber body is the conventional operating pressure in this area, preferably
For 0.1Mpa~10Mpa.
In the gasification process, described gasifying agent can enter from the breather port, and the coal gas of generation is from described
The tail end of conveying gas section comes out；Described gasifying agent can also enter from the tail end of the conveying gas section, and the coal gas of generation is from institute
Breather port is stated to come out.
In the gasification process, when described gasifying agent enters fashionable, the radial fixed-bed gas from the breather port
Change in stove, the through hole in the side wall of preferably described inner layer sleeve is higher than the through hole in the side wall of the ventilation section.
In the gasification process, when described gasifying agent enters fashionable, the radial fixed-bed gas from the breather port
Changing stove preferably also includes second blocking parts；Through hole of second blocking parts in the side wall of the ventilation section
Place, such setting can prevent solid particle from entering the ventilation section, the through hole being preferably disposed in the side wall of the ventilation section
, the side of the gasification cavity.
In the gasification process, when described gasifying agent enters from the tail end of the conveying gas section fashionable, the radial direction is consolidated
In fixed bed gasification furnace, the through hole in the side wall of preferably described ventilation section is higher than the through hole in the side wall of the inner layer sleeve.
In the gasification process, when described gasifying agent enters from the tail end of the conveying gas section fashionable, the radial direction is consolidated
Fixed bed gasification furnace preferably also includes first blocking parts；First blocking parts is located at the side wall of the inner layer sleeve
On through hole, such setting can prevent solid particle from entering the interlayer cavity, be preferably disposed to the inner layer sleeve
Through hole in side wall, the side of the gasification cavity.
In the gasification process, when the gasifying agent enters from the tail end of the conveying gas section and the breather line
When number is two or more, the vapor and the oxidant can be entered respectively by the tail end of the different conveying gas sections
Enter.
In the gasification process, the gasifying agent preferably enters described gasification furnace after preheating.
Present invention also offers above-mentioned radially fixed bed gasification furnace answering in granular solids carbonaceous material gasification method
With.
Without prejudice to the field on the basis of common sense, above-mentioned each optimum condition, can be combined, and it is each preferably to produce the present invention
Example.
In the present invention, unless otherwise instructed, pressure is absolute pressure.
Agents useful for same and raw material of the present invention are commercially available.
The positive effect of the present invention is：
(1) in-furnace temperature distribution is more uniform, and high-temperature region scope is wider, advantageously reduces the pollutants such as tar and phenols
Generation, gasification technology is more environmental clean；
(2) due to gas Radial Flow, flow through that the path of bed is shorter than axial flow reactor, and ventilation sectional area is big, bed resistance
Power is small, is advantageous to gas-solid and fully contacts and improve reaction rate, and gasification furnace can pressurize and continuously run, and greatly increase equipment
Production capacity；
(3) granularity that can gasify is more than 1 millimeter of broken coal, has greatly expanded the raw material range of fixed bed, and reduce
Influence of the grain carry-over process to Global reaction Rate, improves gasification efficiency.
Brief description of the drawings
Fig. 1 is the radial fixed-bed gasification furnace structure figure of the slag tap of a preferred embodiment of the present invention.
Fig. 2 is the structure chart of the blocking parts of a preferred embodiment of the present invention.
Fig. 3 is the structure chart of axial restraint bed gasification furnace.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.The experimental method of unreceipted actual conditions in the following example, conventionally and condition, or according to business
Product specification selects.
A kind of radially fixed bed gasification furnace of 1 slag tap of embodiment
As shown in figure 1, the present invention provides a kind of radially fixed bed gasification furnace of slag tap, it includes body of heater 1 and ventilation
Pipeline 2；
Body of heater 1 includes inner layer sleeve 11, outer layer sleeve 12；The top of inner layer sleeve is provided with entrance, the bottom of inner layer sleeve
Provided with outlet；The side wall of inner layer sleeve 11 in interlayer cavity is provided with through hole 13；The side wall of outer layer sleeve 12 is provided with ventilation
Port 14；The porch of inner layer sleeve 11 is provided with lock hopper 31, is provided with distributor 32 below the entrance of inner layer sleeve 11, inner layer sleeve 11 goes out
Locked slag bucket 34 is provided with mouthful；The bottom of inner layer sleeve 11 is provided with air inlet 15.
Breather line 2 includes ventilation section 21 and conveying gas section 22；The ventilation section 21 and the conveying gas section 22 are respectively provided with
One head end and a tail end, the head end closing of the ventilation section, the tail end of the ventilation section connect with the head end of the conveying gas section,
The tail end 23 of the conveying gas section runs through the body of heater；The ventilation section is located in inner layer sleeve and axially arranged, the ventilation
Section side wall is provided with an at least through hole 24.Water-cooling jacket can be set in breather line 2, avoids overtemperature from damaging.
A kind of gasification process of 2 carbonaceous material of embodiment
The radially fixed bed gasification furnace of slag tap as described in example 1 above, coal particle add from lock hopper 31, through distribution
Enter the gasification cavity after device 32, as gasification reaction progressively moves downward, into locked slag bucket 34；Oxidant and steam are from biography
The tail end 23 of gas transmission section adds, and into ventilation section 21, then by through hole 24, is radially contacted simultaneously with the coal particle in gasification cavity
React, enter the interlayer cavity after producing coal gas, finally flowed out by breather port 14；Partial oxidation agent is from air inlet 15
Add, exothermic heat of reaction is participated in, so as to improve temperature herein so that solid ash is changed into liquid, realizes slag tap.
With above-mentioned gasification operation, a day handles the radially fixed bed gasification furnace of 100 tons of coals, and vapor pressure is normal pressure,
Oxidant is pure oxygen；The oxidant volume for being passed through air inlet 15 accounts for the 10% of operating oxidizer volume.Table 1 gives coal for gasification
Coal data, the calorific value of coal is 35MJ/kg.Symbol implication：Moisture (M), ash content (A), volatile matter (V) and fixed carbon (FC).
As-received (ar)：The state of sample is to receive this batch of sample state in which.
The coal analysis of table 1
The coal gas main component of table 2
In-furnace temperature gasify more than 1200 DEG C, outlet temperature is more than 1100 DEG C, and up to 99%, whole process does not have efficiency of carbon con version
The pollutant such as tar and phenols produces, and table 2 is the main component of the coal gas generated.
A kind of gasification process of 3 carbonaceous material of embodiment
The radially fixed bed gasification furnace of slag tap as described in example 1 above, coal particle add from lock hopper 31, through distribution
Enter the gasification cavity after device 32, as gasification reaction progressively moves downward, into locked slag bucket 34；Oxidant and steam are from logical
Gas port 14 adds, and by through hole 13, radially contacts and reacts with the coal particle in gasification cavity, passed through after producing coal gas
Cross through hole 24 and enter ventilation section 21, finally flowed out by the tail end 23 of conveying gas section；Partial oxidation agent adds from air inlet 15, participates in
Exothermic heat of reaction, so as to improve temperature herein so that solid ash is changed into liquid, realizes slag tap.
With above-mentioned gasification operation, coal for gasification is same as Example 2, and a day handles the radial fixed-bed of 100 tons of coals
Gasification furnace, vapor pressure are normal pressure, and oxidant is pure oxygen；The oxidant volume for being passed through air inlet 15 accounts for operating oxidizer volume
10%.
The coal gas main component of table 3
In-furnace temperature gasify more than 1200 DEG C, outlet temperature is more than 1100 DEG C, and up to 99%, whole process does not have efficiency of carbon con version
The pollutant such as tar and phenols produces, and table 3 is the main component of the coal gas generated.
The blocking parts of embodiment 4
Blocking parts as shown in Figure 2, the left side of figure is gasification cavity, and full of granular solids carbonaceous material, right side is
The through hole 24 of the side wall of the through hole 13 of the side wall of inner layer sleeve 11 or section 21 of ventilating, the gasification cavity side of through hole 13 or 24 is provided with
Baffle plate 5, baffle plate 5 are downwardly open.
A kind of axial restraint bed gasification furnace of comparative example 1
As shown in figure 3, a kind of axial restraint bed gasification furnace, it includes water leg 44, and the top of water leg 44 is provided with entrance,
The bottom of water leg 44 is provided with outlet；The porch of water leg 44 is provided with lock hopper 31 ', tar circulation 41 and jacket steam 42, water folder
Cover and distributor 32 ' is provided with below 44 entrances, the bottom of water leg 44 is provided with fire grate 33 ' and gasification agent inlet 45, and water leg 44 exports
Place is provided with lock ash bucket 34 '；The side wall upper part of water leg 44 is provided with gas washer 43.
A kind of gasification process of 2 carbonaceous material of comparative example
Axial restraint bed gasification furnace as described in comparative example 1, coal particle adds from lock hopper 31 ', through distributor 32 '
Enter the cavity of described axial restraint bed gasification furnace afterwards, as gasification reaction progressively moves downward, lock is entered after fire grate 33 '
Ash bucket 34 '；Gasifying agent adds from gasification agent inlet 45, vertically with the coal in the cavity of described axial restraint bed gasification furnace
Grain is contacted and reacted, and enters gas washer 43 after producing coal gas, scrubbed, is finally flowed out by gas washer 43.
With above-mentioned gasification operation, coal for gasification is same as Example 2, and vapor pressure is normal pressure, and oxidant is pure oxygen.
The axial restraint bed gasification furnace is identical with the radially fixed bed gasification furnace volume of embodiment 2, but in its unit interval
Coal throughput declines 58%, and tar reaches 0.004kg/kg coals, phenols 0.0006kg/kg coals in product raw gas.
Claims (9)
1. a kind of radially fixed bed gasification furnace, it is characterised in that including a body of heater and an at least breather line；
The body of heater includes an inner layer sleeve, and one seals the outer layer for being arranged, being formed an interlayer cavity with the inner layer sleeve
Sleeve；The top of the inner layer sleeve is provided with an entrance, and the bottom of the inner layer sleeve is provided with an outlet；Positioned at the interlayer cavity
The side wall of the inner layer sleeve in body is provided with least one through hole；The side wall of the outer layer sleeve is provided with a breather port, institute
Breather port is stated located at the top of the side wall of the outer layer sleeve；
The breather line includes ventilation section and conveying gas section；The ventilation section and the conveying gas section are respectively provided with a head end and one
Tail end, the head end closing of the ventilation section, the tail end of the ventilation section connect with the head end of the conveying gas section, the conveying gas
The tail end of section runs through the body of heater；The ventilation section is in inner layer sleeve and axially arranged, and the side wall of the ventilation section is provided with
At least one through hole, the through hole are used to radially input gasifying agent in the body of heater；
Through hole in the side wall of the inner layer sleeve staggers with the through hole in the side wall of the ventilation section；When the gasifying agent is from institute
State breather port and enter fashionable, the coal gas of generation comes out from the tail end of the conveying gas section, logical in the side wall of the inner layer sleeve
Hole is higher than the through hole in the side wall of the ventilation section；When described gasifying agent enters fashionable, generation from the tail end of the conveying gas section
Coal gas come out from the breather port, the through hole in the side wall of the ventilation section is higher than logical in the side wall of the inner layer sleeve
Hole.
2. radially fixed bed gasification furnace as claimed in claim 1, it is characterised in that in the radially fixed bed gasification furnace,
When the diameter of the inner layer sleeve is less than or equal to 1 meter, the breather line is one；When the diameter of the inner layer sleeve is more than
At 1 meter, the quantity of the breather line is multiple；
In the radially fixed bed gasification furnace, the radially fixed bed gasification furnace also includes lock hopper, and the lock hopper is located at described
Entrance；
In the radially fixed bed gasification furnace, the radially fixed bed gasification furnace also includes distributor, and the distributor is located at
Below the entrance；
In the radially fixed bed gasification furnace, the radially fixed bed gasification furnace is also located at comprising lock ash bucket, the lock ash bucket
The outlet；
In the radially fixed bed gasification furnace, the radially fixed bed gasification furnace also comprising fire grate or provided with it is at least one enter
Gas port；The fire grate is located at the inner layer sleeve bottom；The air inlet is located at the bottom of the inner layer sleeve；
And/or in the radially fixed bed gasification furnace, the radially fixed bed gasification furnace also includes chuck, the chuck set
Located at the breather line, the chuck is provided with chuck gateway.
3. radially fixed bed gasification furnace as claimed in claim 2, it is characterised in that when the radially fixed bed gasification furnace also wraps
When containing fire grate, the breather pipe run through the fire grate.
4. radially fixed bed gasification furnace as claimed in claim 1, it is characterised in that
In the radially fixed bed gasification furnace, the side wall of through hole and/or the ventilation section in the side wall of the inner layer sleeve
On through hole set-up mode for become percent opening set-up mode；
In the radially fixed bed gasification furnace, the radially fixed bed gasification furnace also includes the first blocking parts, and described first
Through hole of the blocking parts in the side wall of the inner layer sleeve；
In the radially fixed bed gasification furnace, the radially fixed bed gasification furnace also includes the second blocking parts, and described second
Through hole of the blocking parts in the side wall of the ventilation section；
In the radially fixed bed gasification furnace, the diameter of the through hole in the side wall of the inner layer sleeve, which is less than, uses the radial direction
The diameter of granular solids carbonaceous material during fixed-bed gasification furnace progress gasification reaction；
In the radially fixed bed gasification furnace, the diameter of the through hole in the side wall of the ventilation section is less than to be consolidated using the radial direction
The diameter of granular solids carbonaceous material during fixed bed gasification furnace progress gasification reaction；
In the radially fixed bed gasification furnace, the radially fixed bed gasification furnace also includes refractory brick or water-cooling wall, described resistance to
Firebrick or the water-cooling wall are located at inner layer sleeve；
And/or in the radially fixed bed gasification furnace, the inner layer sleeve is the inner layer sleeve of variable diameters.
5. a kind of gasification process of carbonaceous material, it is characterised in that using radially solid as any one of Claims 1 to 4
Fixed bed gasification furnace is carried out, and it comprises the following steps：
(1) granular solids carbonaceous material is filled in gasification cavity, the gasification cavity be by the breather line, it is described go out
The cavity that mouth and the inner layer sleeve surround；
(2) the granular solids carbonaceous material and gasifying agent are subjected to gasification reaction, you can；The gasifying agent be vapor and
Oxidant.
6. gasification process as claimed in claim 5, it is characterised in that in the gasification process, the granular solids contain
Carbonizable substance is coal；
In the gasification process, the oxidant is the gas that the volume content of oxygen is 21%~100%；
In the gasification process, when in the radially fixed bed gasification furnace, the bottom of the inner layer sleeve is provided with least one
During air inlet, the oxidant of part is entered by the air inlet；
In the gasification process, the mass ratio of the oxygen in the vapor, with the oxidant is 3.0~6.5；
In the gasification process, superficial gas velocity is the meter per second of 0.05 meter per second~1 in the gasification cavity；
In the gasification process, the reaction temperature in the gasification chamber body is 900 DEG C~2000 DEG C；
And/or in the gasification process, the operating pressure in the gasification chamber body is 0.1Mpa~10Mpa.
7. gasification process as claimed in claim 5, it is characterised in that in the gasification process, when described gasifying agent from
The breather port is entered fashionable, and the radially fixed bed gasification furnace also includes the second blocking parts, and second blocking parts is set
Through hole in the side wall of the ventilation section；In the gasification process, when described gasifying agent is from the conveying gas section
Tail end enters fashionable, and the radially fixed bed gasification furnace also includes the first blocking parts, and first blocking parts is in described
Through hole in the side wall of layer sleeve；
In the gasification process, when the gasifying agent enters and the number of the breather line from the tail end of the conveying gas section
For two or more when, the vapor and the oxidant are respectively enterd by the tail end of the different conveying gas sections；
And/or in the gasification process, the gasifying agent enters described gasification furnace after preheating.
8. gasification process as claimed in claim 7, it is characterised in that second blocking parts is located at the side of the ventilation section
Through hole on wall, the side of the gasification cavity；
And/or through hole of first blocking parts in the side wall of the inner layer sleeve, the one of the gasification cavity
Side.
9. as radially fixed bed gasification furnace according to any one of claims 1 to 4 gasifies in granular solids carbonaceous material
The application of method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510442373.9A CN104987888B (en) | 2015-07-24 | 2015-07-24 | A kind of gasification process of radially fixed bed gasification furnace, its application and carbonaceous material |
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| CN201510442373.9A CN104987888B (en) | 2015-07-24 | 2015-07-24 | A kind of gasification process of radially fixed bed gasification furnace, its application and carbonaceous material |
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| CN104987888B true CN104987888B (en) | 2017-12-08 |
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