CN209243007U - A kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces - Google Patents
A kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces Download PDFInfo
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- CN209243007U CN209243007U CN201822097988.4U CN201822097988U CN209243007U CN 209243007 U CN209243007 U CN 209243007U CN 201822097988 U CN201822097988 U CN 201822097988U CN 209243007 U CN209243007 U CN 209243007U
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Abstract
The utility model discloses and a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces, several first segment burners have been evenly arranged on the wall surface of first segment reaction chamber, first segment burner is connected to first segment reaction chamber, first imaginary circle is corresponding at the center of first segment reaction chamber, the center line of each first segment burner and first imaginary circle are tangent, and are formed by the first imaginary circle from the air-flow that first segment burner ejects and rotate in the same direction；Several second segment burners have been evenly arranged on the wall surface of the second segment reaction chamber, the second segment burner is connected to second segment reaction chamber, second imaginary circle is corresponding at the center of second segment reaction chamber, the center line of each second segment burner and second imaginary circle are tangent, and opposite with the direction of rotation of the first imaginary circle from the direction of rotation that the air-flow that second segment burner ejects is formed by the second imaginary circle.The utility model can obtain fluid field in furnace, higher retention efficiency and efficiency of carbon con version more evenly.
Description
Technical field
The utility model belongs to Coal Gasification Technology field, and in particular to a kind of double circle of contact double-section dry coal powder pressure gasifyings
Furnace.
Background technique
Coal Gasification Technology is one of the core technology that Coal Clean efficiently utilizes, and industrialized Coal Gasification Technology is mainly wrapped
It is these three types of to include fixed bed gasification, fluidized gasification and entrained flow gasification.Air-flow bed coal-gasification technology has gasification parameter height, gasification
The features such as capacity is big, performance indicator is high, good environmental protection, wide coal adaptability, represents the development side of large-scale Coal Gasification Technology
To.Double-section dry coal powder pressure gasifying technology is one of representative art of entrained flow bed gasification technology, has been successfully applied to entirety
Gasification combined-cycle (IGCC) electricity generation system and Coal Chemical Engineering Project.
In the prior art, for the shock flow field in gasification furnace there are short circuit air flow, the carbon particle reaction in burner hearth is insufficient, holds
Certain carbon loss is easily caused, to reduce the efficiency of carbon con version of gasification furnace.In gasification furnace heavy-duty service, gasification furnace is caught
Slag rate about 40%, flying dust carbon residue are more than 10%, and when the activity of coal for gasification is lower, flying dust carbon residue can be further increased.
Utility model content
For the problems of the prior art, the utility model provides a kind of double circle of contact double-section dry coal powder pressure gasifyings
Furnace improves the retention efficiency and efficiency of carbon con version of gasification furnace the purpose is to make the even flow field in gasification furnace.
To solve above-mentioned technology, the utility model is resolved by following scheme:
A kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces, including the first segment reaction chamber surrounded by water-cooling wall and second
Section reaction chamber, the bottom of the first segment reaction chamber are provided with slag-drip opening, and second segment reaction chamber top is provided with coal gas and goes out
Mouthful, the top of the first segment reaction chamber is connected to the bottom of second segment reaction chamber；
Several first segment burners, the first segment burner and first have been evenly arranged on the wall surface of the first segment reaction chamber
Section reaction chamber connection, is corresponding with first imaginary circle, the center line of each first segment burner at the center of first segment reaction chamber
It is tangent with first imaginary circle, and being formed by the first imaginary circle from the air-flow that first segment burner ejects is in the same direction
Rotation；
Several second segment burners, the second segment burner and second have been evenly arranged on the wall surface of the second segment reaction chamber
Section reaction chamber connection, is corresponding with second imaginary circle, the center line of each second segment burner at the center of second segment reaction chamber
It is tangent with second imaginary circle, and from the air-flow that second segment burner ejects be formed by the direction of rotation of the second imaginary circle with
The direction of rotation of first imaginary circle is opposite.
Further, the exit end face center for the first segment burner that two center lines are parallel to each other is connected to be formed in first
Heart connecting line, the center of circle of first central junction line Jing Guo the first imaginary circle, the center line of first segment burner and the first center
Connecting line is formed by angle α1It is 4 °~8 °；The exit end face center for the second segment burner that two center lines are parallel to each other connects
It connects to form the second central junction line, the center of circle of second central junction line Jing Guo the second imaginary circle, the center of second segment burner
Line and the second central junction line are formed by angle α1It is 4 °~10 °.
Further, between the first segment reaction chamber and second segment reaction chamber by aditus laryngis be connected to, the aditus laryngis it is straight
Diameter is less than the diameter of reaction chamber.
Further, several first segment burners are on sustained height face, and the setting of first segment burner is anti-in first segment
Answer the middle and lower sections of room；Several second segment burners are on sustained height face, and the distance at the top of second segment burner to aditus laryngis
1000~1500mm；The diameter of the aditus laryngis is equal to the half of reaction chamber diameter.
Further, the water-cooling wall setting is formed between the water-cooling wall and gasification furnace shell in gasification furnace shell
Gasification furnace annular space.
Further, there are four the first segment burners, there are two the second segment burners.
Further, the gas exit is provided on the side wall of second segment reaction chamber, and gas exit is closely located to
The top of second-stage reaction room.
Further, first segment nozzle cover is provided with around the outlet of the first segment burner, the second segment burner
Second segment nozzle cover is provided with around outlet.
A kind of gasification process of double circle of contact double-section dry coal powder pressurized-gasification furnaces is, from each first segment burner to first segment
Investment coal dust and gasifying agent, coal dust and gasifying agent form counterclockwise or clockwise rotation in first segment reaction chamber in reaction chamber
Stream, the coal gas of high temperature eddy flow that coal dust reacts generation with gasifying agent rise through aditus laryngis and enter second segment reaction chamber；
Coal dust and gasifying agent are put into second segment reaction chamber from each second segment burner, coal dust and gasifying agent are in second segment
Form eddy flow in reaction chamber, and second segment react indoor eddy flow reacted with first segment indoor eddy flow direction of rotation on the contrary,
Second segment reacts indoor eddy flow and reacts with the coal gas of high temperature hybrid concurrency life entered through aditus laryngis, the coal gas of high temperature uplink after reaction
To gas exit.
Further, the gasifying agent is the gaseous mixture of oxygen or oxygen and steam.
Further, the coal dust amount put into second segment reaction chamber is that gasification furnace always puts into the 5%~15% of coal dust amount,
The oxygen coal ratio put into first segment reaction chamber is 0.8~0.95kg/kg, the oxygen coal ratio put into second segment reaction chamber is 0.2~
0.4kg/kg。
Compared with prior art, the utility model at least has the advantages that the first segment reaction of the utility model
Several first segment burners are evenly arranged on the wall surface of room, first segment burner is connected to first segment reaction chamber, is reacted in first segment
The center of room is corresponding with first imaginary circle, and the center line of each first segment burner and first imaginary circle are tangent, and from
The air-flow that first segment burner ejects is formed by the first imaginary circle and rotates in the same direction.Therefore, coal dust and gasifying agent
Enter in the first segment reaction chamber of gasification furnace through several first segment burners, if carried interest fluidic vectoring thrust circle of contact Swirling Flow, flow field
Burner hearth degree of filling it is good, gas-particle two-phase be uniformly mixed, can improve hit flow field short circuit air flow, meanwhile, coal dust and reaction life
At high-temperature molten-state lime-ash Swirling Flow centrifugal force effect under more moved to burner hearth wall surface, increase coal dust and high temperature
Residence time of molten state lime-ash, and then extend coal dust and react indoor reaction time in first segment, with the operation of gasification furnace,
It will form high-temperature liquid state slag blanket on gasification furnace furnace wall cooling wall surface, therefore can more trap coal dust and high-temperature ash, have
Conducive to raising retention efficiency.Several second segment burners, second segment burner and have been evenly arranged on the wall surface of second segment reaction chamber
The connection of second-stage reaction room, is corresponding with second imaginary circle, the center of each second segment burner at the center of second segment reaction chamber
Line and the second imaginary circle are tangent, and are formed by the direction of rotation of the second imaginary circle and the from the air-flow that second segment burner ejects
The direction of rotation of one imaginary circle is opposite.Likewise, coal dust and gasifying agent enter the second of gasification furnace through several second segment burners
In section reaction chamber, if the traditional method of indicating the pronunciation of a Chinese character circle Swirling Flow of carried interest fluidic vectoring thrust and the coal gas of high temperature of first segment reaction chamber discharge swirl are mixed
It closes, because to react indoor eddy flow with second segment contrary for first segment reaction chamber, can further enhance gas-solid two
It mixes, investment oxygen can be improved the indoor reaction temperature of second segment reaction and reaction rate in second segment reaction chamber, improve
Efficiency of carbon con version, and control ammonia nitrogen generation.To sum up, the utility model can obtain fluid field in furnace, higher retention efficiency more evenly
And efficiency of carbon con version.
Further, the exit end face center for the first segment burner that two center lines are parallel to each other is connected to be formed in first
Heart connecting line, the center of circle of first central junction line Jing Guo the first imaginary circle, the center line of first segment burner are connect with the first center
Line is formed by angle α1It is 4 °~8 °, in order to establish circle of contact flow field in first segment reaction chamber and avoid hitting the production of short circuit air flow
Raw, the drift angle of first segment burner at least should be at 3 ° or more.When the drift angle increases, the high-temperature region of reaction chamber can be leaned on to reaction chamber wall surface
Closely, the local heat load of water-cooling wall increases, when four strands of air-flows of reaction chamber are uneven, it may appear that the case where reaction chamber is burnt partially,
The safe operation for influencing water-cooling wall, is formed by angle α for the center line of first segment burner and the first central junction line1It is set as
4 °~8 °, the Swirling Flow of the circle of contact can either be formed, improves the uniformity and burner hearth degree of filling of Flow and heat flux, while can be with
It resists the reaction chamber being likely to occur and burns situation partially, it is ensured that water-cooling wall safe operation.
Further, the diameter of aditus laryngis is less than the diameter of reaction chamber, the retention efficiency of wall surface near aditus laryngis can be improved, together
When, because the diameter of aditus laryngis becomes smaller, the air-flow velocity of aditus laryngis outlet becomes faster, and it is mixed to be more conducive to gas-particle two-phase in second segment reaction chamber
It closes uniform.
Further, several first segment burners are arranged on sustained height face, and first segment burner is arranged in first segment
The middle and lower sections of reaction chamber are conducive to the degree of filling for improving entire burner hearth, extend coal dust and gasifying agent in the anti-of first segment reaction chamber
Between seasonable, while temperature needed for advantageously ensuring that the smooth deslagging of slag-drip opening；Several second segment burners are arranged in sustained height
1000~1500mm of distance on face, and at the top of second segment burner to aditus laryngis because second segment reaction chamber in put into coal dust with
Gasifying agent closer to the first reaction chamber high-temperature region, the sensible heat of the coal gas of high temperature that can be more generated using first segment reaction chamber into
Row reaction is conducive to improve sensible heat utilization efficiency and reaction rate in this way；When the diameter of aditus laryngis is equal to the half of reaction chamber diameter
When, the air-flow velocity of aditus laryngis outlet increases, and gas-particle two-phase is uniformly mixed, and reaches ideal state.
Further, water-cooling wall setting forms gasification ring in gasification furnace shell between water-cooling wall and gasification furnace shell
Shape space, gasification furnace annular space can play the role of insulating layer, also provide space for the repair and maintenance work of gasification furnace.
Further, gasifying agent is the gaseous mixture of oxygen or oxygen and steam, and oxygen can be improved in second segment reaction chamber
Reaction temperature and reaction rate, improve efficiency of carbon con version, and control ammonia nitrogen generation, when reaction temperature is higher, steam can be used
To reduce reaction chamber temperature, moreover it is possible to play the role of adjusting the carbon monoxide and hydrogen ratio in coal gas.
Further, the coal dust amount put into second segment reaction chamber is that gasification furnace always puts into the 5%~15% of coal dust amount,
Gasification furnace can be further increased to the adaptability of coal, even if when the activity of coal for gasification reduces, it is also ensured that gasification
Furnace has higher efficiency of carbon con version.
Further, the oxygen coal ratio put into first segment reaction chamber is 0.8~0.95kg/kg, is thrown in second segment reaction chamber
The oxygen coal ratio entered is 0.2~0.4kg/kg, can either keep the running temperature of first segment reaction chamber and the group of product coal gas in this way
At, while the running temperature and reaction rate of second segment reaction chamber can be properly increased, promote the conversion of carbon, avoids disappearing too much
Consumption coal gas and lead to the reduction of cold gas efficiency, while second segment can be effectively reduced and react indoor ammonia nitrogen production quantity.
Detailed description of the invention
It, below will be to specific embodiment party in order to illustrate more clearly of the technical solution in specific embodiment of the present invention
Attached drawing needed in formula description is briefly described, it should be apparent that, the accompanying drawings in the following description is the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the utility model gasification furnace structure schematic diagram；
Fig. 2 is the first segment burner arrangement schematic diagram of the utility model gasification furnace；
Fig. 3 is the second segment burner arrangement schematic diagram of the utility model gasification furnace.
In figure: 1- water-cooling wall；2- gasification furnace shell；3- gasification furnace annular space；4- slag-drip opening；5- aditus laryngis；6- first segment
Reaction chamber；7- second segment reaction chamber；8- gas exit；9- first segment burner；10- first segment nozzle cover；11- second segment burner；
12- second segment nozzle cover.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
As shown in Figure 1, the utility model mainly includes water-cooling wall 1, gasification furnace shell 2, first segment reaction chamber 6, second segment
Reaction chamber 7, first segment burner 9 and second segment burner 11, the burner hearth of the gasification furnace are the cylinder shaped reaction skies surrounded by water-cooling wall 1
Between.In the water-evaporating furnace side wall surface of first segment reaction chamber 6 and the middle and lower part water-evaporating furnace side wall surface of second segment reaction chamber 7
The refractory material of protection water-cooling wall safe operation is all built, there is the gasification furnace shell 2 of pressure-bearing in the outside of water-cooling wall 1, and gasify furnace shell
Cavity between body 2 and water-cooling wall 1 is gasification furnace annular space 3, and gasification furnace annular space 3 is that the work of subsequent repair and maintenance mentions
Space is supplied.Water-cooling wall 1 shrinks to form slag-drip opening 4 in burner hearth bottom, and water-cooling wall 1 is shunk in the middle part of burner hearth forms aditus laryngis 5, at this
In a certain preferred embodiment of utility model, the diameter of slag-drip opening 4 and aditus laryngis 5 is the half of gasification furnace furnace diameter, burner hearth bottom
Systolic slope in the middle part of portion and burner hearth is 45 °, i.e., the gradient of the intermediate incline between slag-drip opening 4 and reaction chamber is 45 °, aditus laryngis
The gradient of intermediate incline between 5 and reaction chamber is 45 °.Burner hearth is divided into first segment reaction chamber 6 and the top of lower part by aditus laryngis 5
Second segment reaction chamber 7, first segment reaction chamber 6 are connected to second segment reaction chamber 7, offer coal on the top of second segment reaction chamber 7
Gas outlet 8, gas exit 8 opens up the top for being located proximate to second segment reaction chamber 7.
In a certain preferred embodiment of the utility model, it is evenly arranged on the middle and lower part wall surface of first segment reaction chamber 6
There are four first segment burners 9, and are provided with first segment nozzle cover 10 around the outlet of each first segment burner 9, anti-in second segment
Second segment burner 11 there are two being evenly arranged on the lower part wall surface of room 7 is answered, and is arranged around the outlet of each second segment burner 11
There is second segment nozzle cover 12, cooling water is connected in nozzle cover to absorb the thermic load of burner near exit to guarantee that burner is transported safely
Row.Preferably, four first segment burners 9 are on sustained height face, and two second segment burners 11 are on sustained height face, and second
The distance at section burner 11 to 5 top of aditus laryngis is 1000~1500mm, and the distance at second segment burner 11 to 5 top of aditus laryngis is small, this has
Conducive to raising sensible heat utilization efficiency and reaction rate.First segment burner 9 and second segment burner 11 can use two channels or multi-pass
The structure in road.
The wall surface for the first segment reaction chamber 6 mentioned in the utility model and the wall surface of second segment reaction chamber 7, each mean water
The burner hearth sidewall face of cold wall 1.
It, certainly, can also be according to practical condition and equipment scale in the other embodiments of the utility model
It is evenly arranged six first segment burners 9 on the middle and lower part wall surface of one section of reaction chamber 6, or more even numbers first can be set
Section burner 9.Similarly, four second segment burners 11 can also be evenly arranged on the middle and lower part wall surface of second segment reaction chamber 7.
As a certain embodiment of the utility model, it is illustrated in figure 2 four first segment burners 9 of the utility model gasification furnace
Specific arrangement method, first imaginary circle is corresponding at the center of first segment reaction chamber 6, in each first segment burner 9
Heart line and the first imaginary circle are tangent counterclockwise, and it is inverse for being formed by the first imaginary circle from the air-flow that first segment burner 9 ejects
Hour hands rotation；The exit end face center for the first segment burner 9 that two center lines are parallel to each other is connected to form the first center company
Wiring, the center of circle of first central junction line Jing Guo the first imaginary circle, the center line of first segment burner 9 and the first central junction line institute
The angle α of formation1It is 4 °~8 °.I.e. by first segment burner 9 enter burner hearth four strands of coal dusts and gasifying agent (oxygen or oxygen and
The gaseous mixture of steam) fluidic vectoring thrust circle of contact flow field, gas-particle two-phase mixes strongly, can both increase the coal dust residence time, also have
The trapping of coal dust and lime-ash is faced conducive to hearth wall.It is illustrated in figure 3 two second segment burners 11 of the utility model gasification furnace
Specific arrangement method is corresponding with second imaginary circle, the center of each second segment burner 11 at the center of second segment reaction chamber 7
Line and the second imaginary circle are tangent clockwise, and being formed by the second imaginary circle from the air-flow that second segment burner 11 ejects is up time
Needle rotation；The exit end face center for the second segment burner 11 that two center lines are parallel to each other is connected to form the connection of the second center
Line, the center of circle of second central junction line Jing Guo the second imaginary circle, the center line of second segment burner and the second central junction line institute shape
At angle α1It is 4 °~10 °.I.e. by second segment burner 11 enter burner hearth two strands of coal dusts and gasifying agent (oxygen or oxygen and
The gaseous mixture of steam) fluidic vectoring thrust traditional method of indicating the pronunciation of a Chinese character circular jet field, and with the height generated in first segment reaction chamber 6 that enters through aditus laryngis 5
Warm coal gas is sufficiently mixed and reacts, because first segment reaction chamber 6 is contrary with the eddy flow in second segment reaction chamber 7, gas
Gu two-phase mixes strongly, flow field is more uniform.
As another embodiment of the utility model, it is corresponding with first imaginary circle at the center of first segment reaction chamber 6,
The center line of each first segment burner 9 and the first imaginary circle are tangent clockwise, and the air-flow institute shape ejected from first segment burner 9
At the first imaginary circle rotate clockwise；The exit end face center for the first segment burner 9 that two center lines are parallel to each other
Connection forms the first central junction line, the center of circle of first central junction line Jing Guo the first imaginary circle, in first segment burner 9 and first
The center line of heart connecting line is formed by angle α1It is 4 °~8 °.I.e. by first segment burner 9 enter burner hearth four strands of coal dusts and
The fluidic vectoring thrust circle of contact flow field of gasifying agent (gaseous mixture of oxygen or oxygen and steam), gas-particle two-phase mix strongly, can both increase
The coal powder residence time is also beneficial to trapping of the burner hearth to coal dust and lime-ash.One is corresponding at the center of second segment reaction chamber 7
Second imaginary circle, the center line of each second segment burner 11 and the second imaginary circle are tangent counterclockwise, and spray from second segment burner 11
The air-flow of injection is formed by the second imaginary circle and rotates counterclockwise；The second segment burner 11 that two center lines are parallel to each other
Exit end face center connect to form the second central junction line, the center of circle of second central junction line Jing Guo the second imaginary circle, second
The center line and the second central junction line of section burner are formed by angle α1It is 4 °~10 °.Enter by second segment burner 11
The fluidic vectoring thrust traditional method of indicating the pronunciation of a Chinese character circular jet field of the two strands of coal dusts and gasifying agent (gaseous mixture of oxygen or oxygen and steam) of burner hearth, and with through larynx
Mouthfuls 5 coal gas of high temperature generated in first segment reaction chamber 6 entered are sufficiently mixed and react, because of first segment reaction chamber 6 and the
Eddy flow in second-stage reaction room 7 is contrary, therefore gas-particle two-phase mixes strongly, and flow field is more uniform.
As a certain embodiment of the utility model, when gasifying furnace igniting starting, coal dust in first segment reaction chamber 6 and
The kindling of gasifying agent is to light a fire to realize by integrated startup burner, which uses the knot of non-premixed combustion
Structure uses diesel oil and oxygen for medium, can be improved the ignition success rate of gasification furnace and the security reliability of startup burner.
The double-section dry coal powder process for pressurized gasification of the utility model uses two sections of classification gasification principles, reacts to first segment
Room 6 puts into coal dust and gasifying agent (gaseous mixture of oxygen or oxygen and steam), using circle of contact mode tissue flow field and arranges four
First segment burner 9, from four bursts of fluidic vectoring thrust circle of contact flow fields that first segment burner 9 sprays, the high-temperature ash of coal dust and reaction generation
Rise with flow rotation, increase the residence time of coal dust and high-temperature molten-state lime-ash, coal dust and high-temperature molten-state lime-ash are revolving
It is more moved to water-cooling wall 1 under the action of stream flow field centrifugal force, with the operation of gasification furnace, 1 wall of gasification furnace furnace wall cooling
It will form high-temperature liquid state slag blanket on face, therefore can more trap coal dust and high-temperature ash.Coal is put into second segment reaction chamber 7
Powder and gasifying agent (gaseous mixture of oxygen or oxygen and steam) using traditional method of indicating the pronunciation of a Chinese character circle mode tissue flow field and arrange that two second segments are burnt
Mouth 11, traditional method of indicating the pronunciation of a Chinese character circle mode enhance the mixing of air-flow and the ascending air out of first segment reaction chamber 6 in second segment reaction chamber 7,
Gas-particle two-phase is uniformly mixed.In addition, reaction temperature and reaction rate can be improved in the oxygen put into second segment reaction chamber 7,
Be conducive to reaction to carry out, improve efficiency of carbon con version, and controls the ammonia nitrogen reacted in second segment reaction chamber 7 and generate.First segment reaction chamber 6
It is 9:1 with the ratio between the coal feeding amount of second segment reaction chamber 7, gasification furnace can be further increased to the adaptability of coal, even if in gas
When changing the activity reduction with coal, it is ensured that gasification furnace efficiency of carbon con version with higher.
Utilize a kind of gasification process of double-section dry coal powder pressurized-gasification furnace of the utility model are as follows: burn from each first segment
Mouth 9 puts into coal dust and gasifying agent into first segment reaction chamber 6, and coal dust and gasifying agent are formed counterclockwise in first segment reaction chamber 6
Or clockwise eddy flow, coal dust react the coal gas of high temperature eddy flow generated with gasifying agent and rise through aditus laryngis 5 into second segment reaction
Room 7；
Coal dust and gasifying agent are put into second segment reaction chamber 7 from each second segment burner 11, coal dust and gasifying agent are
Eddy flow, and the rotation side of the eddy flow in second segment reaction chamber 7 and the eddy flow in first segment reaction chamber 6 are formed in second-stage reaction room 7
To on the contrary, the eddy flow in second segment reaction chamber 7 is mixed and is reacted, the high-temperature coal after reaction with the coal gas of high temperature entered through aditus laryngis 5
Gas goes upward to gas exit 8.The coal dust amount put into second segment reaction chamber 7 be gasification furnace always put into coal dust amount 5%~
15%, the interior oxygen coal ratio put into of first segment reaction chamber 6 is 0.8~0.95kg/kg, the oxygen coal ratio put into second segment reaction chamber 7
For 0.2~0.4kg/kg.
A kind of a kind of preferred embodiment of the gasification process of double-section dry coal powder pressurized-gasification furnace as the utility model
Are as follows: when gasified boiler system starts work, coal dust and gas are put into first segment reaction chamber 6 from each first segment burner 9 first
Agent, coal dust react the coal gas of high temperature eddy flow generated with gasifying agent and rise through aditus laryngis 5 into second segment reaction chamber 7；When first
When the coal feeding amount of section reaction chamber 6 reaches the 50% of its rated load, start to put into coal dust and gasification into second segment reaction chamber 7
Agent allows coal dust to participate in reacting in second segment reaction chamber 7 with gasifying agent.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (8)
1. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces, it is characterised in that: including the first segment surrounded by water-cooling wall (1)
The bottom of reaction chamber (6) and second segment reaction chamber (7), the first segment reaction chamber (6) is provided with slag-drip opening (4), and described second
Section reaction chamber (7) top is provided with gas exit (8), top and second segment reaction chamber (7) of the first segment reaction chamber (6)
Bottom connection；
Several first segment burners (9), the first segment burner (9) have been evenly arranged on the wall surface of the first segment reaction chamber (6)
It is connected to first segment reaction chamber (6), is corresponding with first imaginary circle, each first segment at the center of first segment reaction chamber (6)
The center line of burner (9) and first imaginary circle are tangent, and are formed by first from the air-flow that first segment burner (9) ejects
Imaginary circle rotates in the same direction；
Several second segment burners (11), the second segment burner have been evenly arranged on the wall surface of the second segment reaction chamber (7)
(11) it is connected to second segment reaction chamber (7), is corresponding with second imaginary circle, Mei Ge at the center of second segment reaction chamber (7)
The center line of two sections of burners (11) and second imaginary circle are tangent, and are formed from the air-flow that second segment burner (11) ejects
The second imaginary circle direction of rotation it is opposite with the direction of rotation of the first imaginary circle.
2. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces according to claim 1, it is characterised in that: will be in two
The exit end face center for the first segment burner (9) that heart line is parallel to each other connects to form the first central junction line, first center
The center of circle of the connecting line Jing Guo the first imaginary circle, the center line and the first central junction line of first segment burner (9) are formed by angle
α1It is 4 °~8 °；It connects the exit end face center for the second segment burner (11) that two center lines are parallel to each other to form the second center
Connecting line, the center of circle of second central junction line Jing Guo the second imaginary circle, in the center line and second of second segment burner (11)
Heart connecting line is formed by angle α1It is 4 °~10 °.
3. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces according to claim 1, it is characterised in that: described first
It is connected between section reaction chamber (6) and second segment reaction chamber (7) by aditus laryngis (5), the diameter of the aditus laryngis (5) is less than reaction chamber
Diameter.
4. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces according to claim 3, it is characterised in that: described several
First segment burner (9) is on sustained height face, and first segment burner (9) setting is in the middle and lower sections of first segment reaction chamber (6)；It is described
Several second segment burners (11) on sustained height face, and second segment burner (11) to the distance at the top of aditus laryngis (5) be 1000~
1500mm；The diameter of the aditus laryngis (5) is equal to the half of reaction chamber diameter.
5. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces according to claim 1, it is characterised in that: the water cooling
Wall (1) setting forms gasification furnace annular space in gasification furnace shell (2) between the water-cooling wall (1) and gasification furnace shell (2)
(3)。
6. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces according to claim 1, it is characterised in that: described first
There are four section burners (9), and there are two the second segment burners (11).
7. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces according to claim 1, it is characterised in that: the coal gas
Outlet (8) is provided on the side wall of second segment reaction chamber (7), the top for being closely located to second segment reaction chamber (7) of gas exit (8)
Portion.
8. a kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces according to claim 1, it is characterised in that: described first
It is provided with first segment nozzle cover (10) around the outlet of section burner (9), is provided with around the outlet of the second segment burner (11)
Second segment nozzle cover (12).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109401798A (en) * | 2018-12-13 | 2019-03-01 | 中国华能集团清洁能源技术研究院有限公司 | A kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces and its gasification process |
| CN110790232A (en) * | 2019-12-04 | 2020-02-14 | 清华大学 | Liquid fuel catalytic reforming device |
| CN115305119A (en) * | 2021-05-06 | 2022-11-08 | 卢玉升 | Radial gasification furnace |
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2018
- 2018-12-13 CN CN201822097988.4U patent/CN209243007U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109401798A (en) * | 2018-12-13 | 2019-03-01 | 中国华能集团清洁能源技术研究院有限公司 | A kind of double circle of contact double-section dry coal powder pressurized-gasification furnaces and its gasification process |
| CN110790232A (en) * | 2019-12-04 | 2020-02-14 | 清华大学 | Liquid fuel catalytic reforming device |
| CN115305119A (en) * | 2021-05-06 | 2022-11-08 | 卢玉升 | Radial gasification furnace |
| CN115305119B (en) * | 2021-05-06 | 2024-05-14 | 卢玉升 | Radial gasification furnace |
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