CN112480970A - Internal circulating fluidized bed pulverized coal gasification furnace - Google Patents
Internal circulating fluidized bed pulverized coal gasification furnace Download PDFInfo
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- CN112480970A CN112480970A CN202011371563.3A CN202011371563A CN112480970A CN 112480970 A CN112480970 A CN 112480970A CN 202011371563 A CN202011371563 A CN 202011371563A CN 112480970 A CN112480970 A CN 112480970A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
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- Oil, Petroleum & Natural Gas (AREA)
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses an internal circulating fluidized bed pulverized coal gasification furnace, which comprises: the device comprises a furnace body, a coal bunker, a first discharge pipe and a cinder discharge mechanism; the bottom of the coal bunker is fixed at the top of the furnace body through a support column, the lower surface of the coal bunker is also provided with a spiral coal feeder communicated with the interior of the coal bunker, the spiral coal feeder is communicated with a feed inlet at the top of the furnace body through a discharge pipe, the top of the furnace body is also provided with a first discharge pipe communicated with an inner cavity of the furnace body, and a filter screen is arranged inside the first discharge pipe; and is communicated with a discharge hole at the bottom of the furnace body so as to discharge the coal cinder in the cavity of the furnace body; one side of the furnace body is respectively provided with a burner communicated with the inner cavity of the furnace body and an oxygen-enriched gasifying agent inlet. The structure of the gasifier that this gasifier overcome among the prior art is comparatively single, and coal gas all directly discharges the use, and impurity content is high, and the cinder of inner chamber also directly stacks in the inside of furnace body, not only influences going on of gasification reaction, still needs manual handling, the problem that wastes time and energy.
Description
Technical Field
The invention relates to the technical field of gasification furnaces, in particular to an internal circulating fluidized bed pulverized coal gasification furnace.
Background
Coal, petroleum and natural gas are main energy sources in the world, coal is an indispensable main energy source in China lacking oil and gas, an important mode for reasonably utilizing coal is to gasify the coal into gas and then widely utilize the gas to meet the requirement of green energy policy for clean coal utilization proposed by the state, a coal gasification technology is one of technologies for reasonably utilizing the coal and cleanly utilizing the coal, the research on coal gasification technology is widely carried out in various countries in the world, so that coal gasification methods and equipment developed so far are numerous, wherein key equipment of the coal gasification technology is a coal gas gasification furnace which is commonly called as a gasification furnace.
The gasifier among the prior art's structure is comparatively single, and coal gas all directly discharges the use moreover, and impurity content is high, and the cinder of inner chamber also directly stacks in the inside of furnace body, not only influences going on of gasification reaction, still needs manual handling, wastes time and energy.
Therefore, the invention provides an internal circulating fluidized bed pulverized coal gasification furnace which can overcome the technical problems in the using process, ensure the quality of coal gas emission and automatically collect and treat coal slag, and aims to solve the problems in urgent need.
Disclosure of Invention
Aiming at the technical problems, the invention aims to overcome the problems that the structure of the gasification furnace in the prior art is single, coal gas is directly discharged and used, the impurity content is high, and cinder in an inner cavity is directly stacked in the furnace body, so that the gasification reaction is influenced, manual treatment is needed, and time and labor are wasted, thereby providing the internal circulation fluidized bed pulverized coal gasification furnace which can overcome the technical problems in the use process, ensure the quality of coal gas discharge and automatically collect and treat the cinder.
In order to achieve the above object, the present invention provides an internally circulating fluidized bed fine coal gasification furnace, comprising: the device comprises a furnace body, a coal bunker, a first discharge pipe and a cinder discharge mechanism; the bottom of the coal bunker is fixed at the top of the furnace body through a support column, the lower surface of the coal bunker is also provided with a spiral coal feeder communicated with the interior of the coal bunker, the spiral coal feeder is communicated with a feed inlet at the top of the furnace body through a discharge pipe, the top of the furnace body is also provided with a first discharge pipe communicated with an inner cavity of the furnace body, and a filter screen is arranged inside the first discharge pipe; the cinder discharging mechanism is arranged at the bottom of the furnace body and communicated with a discharge port at the bottom of the furnace body so as to discharge cinder in the cavity of the furnace body; and one side of the furnace body is respectively provided with a burner communicated with the inner cavity of the furnace body and an oxygen-enriched gasifying agent inlet, wherein the oxygen-enriched gasifying agent inlet injects oxygen-enriched gas into the inner cavity of the furnace body so as to react with the pulverized coal in the inner cavity.
Preferably, the internal circulation fluidized bed pulverized coal gasification furnace further comprises a gas-solid separation device, the gas-solid separation device is communicated with the exhaust port on the side face of the furnace body through a plurality of second exhaust pipes, and a third exhaust pipe communicated with the inside of the gas-solid separation device is arranged at the top of the gas-solid separation device.
Preferably, the number of the second discharge pipes is at least two, wherein one of the second discharge pipes is arranged at the top of the side surface of the furnace body, and the other one of the second discharge pipes is arranged at the bottom of the side surface of the furnace body.
Preferably, the cinder discharge mechanism includes: the fourth discharge pipe, the cinder storage pipe, the motor, the driving screw and the fifth discharge pipe; wherein the content of the first and second substances,
the one end of fourth delivery pipe with the bin outlet is linked together, and the other end sets up the middle part of cinder holding tube, and with the inside of cinder holding tube is linked together, the inside of cinder holding tube is provided with drive screw along the length direction of self, drive screw's one end with the motor links to each other, keep away from on the cinder holding tube the vertical fifth delivery pipe that is linked together rather than inside that is provided with of one end lower surface of motor.
Preferably, the inside bottom of furnace body is provided with the guide cylinder, the guide cylinder is hopper-shaped, and the bottom with the upper end of bin outlet is linked together.
Preferably, the upper end of the first exhaust pipe is provided with a gas exhaust solenoid valve.
Preferably, the side surface of the discharge pipe is provided with an air pressure pipe.
Preferably, the inner side surface of the inner cavity of the furnace body is paved with a heat-insulating refractory lining layer.
According to the technical scheme, the internal circulating fluidized bed pulverized coal gasification furnace provided by the invention has the beneficial effects that: through the coal bunker cooperation spiral coal feeder to automatic coal feeding in the furnace body, then pour into rich oxygen and coal powder reaction through oxygen-enriched gasification agent entry, after the reaction is accomplished, ignite through the nozzle, make the furnace body in produce high temperature, volatile and tar take place the pyrolysis in the coal under high temperature, the redox reaction of coal tar, the coal gas that produces in the furnace body 1 is discharged after filtering through first discharge tube, and after the coal gas emission was accomplished, the cinder discharges and keeps in and discharges in the cinder discharge mechanism. The internal circulating fluidized bed pulverized coal gasification furnace provided by the invention overcomes the problems that the gasification furnace in the prior art is single in structure, coal gas is directly discharged and used, the impurity content is high, and coal slag in an inner cavity is directly stacked in the furnace body, so that the gasification reaction is influenced, manual treatment is needed, and time and labor are wasted.
Additional features and advantages of the invention will be set forth in the detailed description which follows; and the parts not involved in the invention are the same as or can be realized by the prior art.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of an internally circulating fluidized-bed pulverized coal gasification furnace provided in a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of a cinder discharge mechanism provided in a preferred embodiment of the present invention;
fig. 3 is a schematic view of the internal structure of a first exhaust pipe provided in a preferred embodiment of the present invention.
Description of the reference numerals
1 furnace body 2 dog-house
3 arrange 4 spiral stoker in material pipe
5 support column 6 coal bunker
7 first exhaust pipe 8 gas exhaust electromagnetic valve
9 Filter mesh 10 second discharge pipe
11 gas-solid separation device 12 third discharge pipe
13 burner 14 oxygen-enriched gasifying agent inlet
15 control switch 16 guide cylinder
17 fourth discharge pipe 18 cinder holding pipe
19 motor 20 driving screw
21 fifth discharge pipe 22 discharge opening
23 thermal insulation refractory lining layer
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the directional words "upper, lower, inner, outer" and the like included in the terms merely represent the orientation of the terms in a conventional use state or are colloquially understood by those skilled in the art, and should not be construed as limiting the terms.
As shown in fig. 1 to 3, the present invention provides an internally circulating fluidized-bed pulverized coal gasification furnace including: the device comprises a furnace body 1, a coal bunker 6, a first discharge pipe 7 and a cinder discharge mechanism; the bottom of the coal bunker 6 is fixed at the top of the furnace body 1 through a support pillar 5, a spiral coal feeder 4 communicated with the interior of the coal bunker 6 is further arranged on the lower surface of the coal bunker 6, the spiral coal feeder 4 is communicated with a feed port 2 at the top of the furnace body 1 through a discharge pipe 3, a first discharge pipe 7 communicated with the inner cavity of the furnace body 1 is further arranged at the top of the furnace body 1, and a filter screen 9 is arranged inside the first discharge pipe 7; the cinder discharging mechanism is arranged at the bottom of the furnace body 1 and is communicated with a discharge port 22 at the bottom of the furnace body 1 so as to discharge cinder in the cavity of the furnace body 1; and one side of the furnace body 1 is respectively provided with a burner 13 communicated with the inner cavity of the furnace body and an oxygen-enriched gasifying agent inlet 14, wherein the oxygen-enriched gasifying agent inlet 14 injects oxygen-enriched gas into the inner cavity of the furnace body 1 to react with the coal powder in the inner cavity.
In the above scheme, through the coal bunker 6 cooperation spiral coal feeder 4 to automatic coal feeding in the furnace body 1, then pour into rich oxygen through the oxygen-enriched gasification agent entry and react with the buggy, after the reaction is accomplished, ignite through the nozzle, make the internal high temperature that produces of furnace, volatile and tar take place the pyrolysis under high temperature, the redox reaction of coal tar, the coal gas that produces in the furnace body 1 discharges after filtering through first exhaust pipe 7, and after the coal gas discharges, the cinder discharges and keeps in the cinder discharge mechanism and discharges. The internal circulating fluidized bed pulverized coal gasification furnace provided by the invention overcomes the problems that the gasification furnace in the prior art is single in structure, coal gas is directly discharged and used, the impurity content is high, and coal slag in an inner cavity is directly stacked in the furnace body, so that the gasification reaction is influenced, manual treatment is needed, and time and labor are wasted.
In a preferred embodiment of the present invention, the internal circulating fluidized bed pulverized coal gasification furnace further comprises a gas-solid separation device 11, the gas-solid separation device 11 is communicated with the exhaust port on the side surface of the furnace body 1 through a plurality of second exhaust pipes 10, and a third exhaust pipe 12 communicated with the inside of the gas-solid separation device 11 is arranged on the top of the gas-solid separation device 11.
In the above scheme, in order to ensure the quality and purity of the gas discharged from the first discharge pipe 7, the gas-solid separation device 11 is further provided to discharge particles in the gas in the inner cavity of the furnace body 1, wherein the gas in the inner cavity is introduced into the gas-solid separation device 11 through the second discharge pipes 10, then the gas-solid separation device 11 separates the gas part from the particles part in the gas, and finally the particles part is discharged through the third discharge pipe 12, so that the purity of the gas in the inner cavity of the furnace body 1 is higher, the filtering pressure of the first discharge pipe 7 is not so high, and the purity of the discharged gas is also higher.
In a preferred embodiment of the present invention, the second discharge pipes 10 comprise at least two, wherein one of the second discharge pipes 10 is disposed at the top of the side of the furnace body 1, and the other second discharge pipe 10 is disposed at the bottom of the side of the furnace body 1.
In the scheme, the two second discharge pipes 10 are arranged at the upper position and the lower position, so that the coal gas in the cavity of the furnace body 1 can be fully filtered, and the filtering effect is prevented from being influenced due to the uneven quality of the coal gas in the cavity.
In a preferred embodiment of the present invention, the cinder discharge mechanism includes: a fourth discharge pipe 17, a cinder storage pipe 18, a motor 19, a drive screw 20, and a fifth discharge pipe 21; wherein, the one end of fourth delivery pipe 17 with bin outlet 22 is linked together, and the other end setting is in the middle part of cinder holding tube 18, and with the inside of cinder holding tube 18 is linked together, the inside of cinder holding tube 18 is provided with drive screw 20 along self length direction, drive screw 20's one end with motor 19 links to each other, keep away from on the cinder holding tube 18 the vertical fifth delivery pipe 21 that is linked together rather than inside that is provided with of one end lower surface of motor 19.
In the above scheme, the operation of discharging the coal cinder by the coal cinder discharging mechanism is also automatically performed, manual discharging is not needed, when the coal cinder discharging mechanism is in operation, the motor 19 drives the driving screw rod 20 to rotate, the thread on the driving screw rod 20 can push the coal cinder in the coal cinder storage pipe 18 to move towards one end far away from the motor 19, so that the coal cinder falls into the fifth discharge pipe 21, and the effect of automatic discharging is achieved, so that time and labor can be saved.
In a preferred embodiment of the present invention, a material guiding cylinder 16 is disposed at the bottom of the furnace body 1, and the material guiding cylinder 16 is funnel-shaped and the bottom thereof is communicated with the upper end of the material outlet 22.
In the above solution, the material guiding cylinder 16 can ensure that the generated cinder effectively falls into the material discharging opening 22, so as to enter the cinder discharging mechanism, and the cinder discharging problem inside the cinder discharging mechanism is not easy to occur due to the blockage problem.
In a preferred embodiment of the present invention, the upper end of the first exhaust pipe 7 is provided with a gas exhaust solenoid valve 8.
In the scheme, the gas discharge electromagnetic valve 8 is convenient for a worker to remotely control the on-off of the first discharge pipe 7.
In a preferred embodiment of the invention, the discharge conduit 3 is provided with a pneumatic tube on its side.
In the scheme, the arrangement of the gas pressure pipe can prevent gas in the furnace body from flowing back and coal from entering smoothly, and high-pressure CO2 or N2 can be introduced to the discharge pipe 3 through the gas pressure pipe to serve as conveying gas of coal powder.
In a preferred embodiment of the invention, the inner side of the inner cavity of the furnace body 1 is provided with a heat-insulating refractory lining layer 23.
In the above scheme, the temperature of the inner cavity of the furnace body 1 is ensured by the heat-insulating fireproof lining layer 23, so that the gasification can be facilitated, the output rate and the quality of coal gas are ensured, and the safety of the device is ensured to prevent fire and other problems.
According to the content, the working principle of the internal circulating fluidized bed pulverized coal gasification furnace provided by the invention is as follows: firstly, the ground coal powder is filled into a coal bunker 6, then a spiral coal feeder 4 is started through an operation switch 15, the coal powder in the coal bunker 6 is conveyed into a discharge pipe 3 through the spiral coal feeder 4, the left side and the right side of the discharge pipe 3 are provided with air pressure pipes, in order to prevent coal gas in the furnace body from flowing backwards and coal feeding smoothly, high-pressure CO2 or N2 is introduced onto the discharge pipe 3 of the spiral coal feeder 4 to be used as conveying gas of the coal powder, when the coal powder enters an inner cavity of the furnace body 1 through a discharge pipe 3 through a feeding port 2, then oxygen-enriched gas is filled through an oxygen-enriched gasifying agent inlet 14 to react with the coal powder, after the reaction is finished, the reaction is ignited through a burner 13, so that high temperature is generated in the furnace body 1, volatile components and tar in the coal are cracked under the high temperature, the oxidation-reduction reaction of the coal tar is carried out, the coal gas generated in the furnace body 1 is separated from the coal powder in the gas-solid state, then is discharged through a third discharge After the coal gas is discharged, the electromagnetic valve arranged at the top is opened through the fourth discharge pipe 17 to discharge the coal cinder, after the coal cinder is discharged into the coal cinder storage pipe 18, the motor 19 is started to operate through the control switch 15, the motor 19 drives the rotary screw 20 to rotate, the rotary screw 20 can rotate to drive the coal cinder to be discharged into the fifth discharge pipe 21, and the coal cinder is discharged through the fifth discharge pipe 21.
In conclusion, the internal circulation fluidized bed pulverized coal gasification furnace provided by the invention overcomes the problems that the gasification furnace in the prior art has a single structure, coal gas is directly discharged and used, the impurity content is high, and coal slag in an inner cavity is directly stacked in the furnace body, so that the gasification reaction is influenced, manual treatment is needed, and time and labor are wasted.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (8)
1. An internally circulating fluidized bed pulverized coal gasification furnace, characterized in that the internally circulating fluidized bed pulverized coal gasification furnace comprises: the device comprises a furnace body (1), a coal bunker (6), a first discharge pipe (7) and a cinder discharge mechanism; the bottom of the coal bunker (6) is fixed at the top of the furnace body (1) through a support column (5), a spiral coal feeder (4) communicated with the interior of the coal bunker (6) is further arranged on the lower surface of the coal bunker (6), the spiral coal feeder (4) is communicated with a feed opening (2) at the top of the furnace body (1) through a discharge pipe (3), a first discharge pipe (7) communicated with an inner cavity of the furnace body (1) is further arranged at the top of the furnace body (1), and a filter screen (9) is arranged inside the first discharge pipe (7); the cinder discharging mechanism is arranged at the bottom of the furnace body (1) and communicated with a discharge port (22) at the bottom of the furnace body (1) to discharge cinder in a cavity of the furnace body (1); the coal powder gasification furnace is characterized in that one side of the furnace body (1) is respectively provided with a burner (13) communicated with the inner cavity of the furnace body and an oxygen-enriched gasifying agent inlet (14), wherein the oxygen-enriched gasifying agent inlet (14) injects oxygen-enriched gas into the inner cavity of the furnace body (1) to react with coal powder in the inner cavity.
2. The internally circulating fluidized bed pulverized coal gasification furnace according to claim 1, further comprising a gas-solid separation device (11), wherein the gas-solid separation device (11) is communicated with the exhaust port on the side surface of the furnace body (1) through a plurality of second exhaust pipes (10), and a third exhaust pipe (12) communicated with the inside of the gas-solid separation device (11) is arranged at the top of the gas-solid separation device (11).
3. The internally circulating fluidized bed pulverized coal gasification furnace according to claim 2, wherein the number of the second discharge pipes (10) is at least two, one of the second discharge pipes (10) is arranged at the top of the side surface of the furnace body (1), and the other second discharge pipe (10) is arranged at the bottom of the side surface of the furnace body (1).
4. The internally circulating fluidized-bed pulverized coal gasification furnace according to claim 1, wherein the cinder discharge mechanism includes: a fourth discharge pipe (17), a cinder storage pipe (18), a motor (19), a drive screw (20) and a fifth discharge pipe (21); wherein the content of the first and second substances,
the one end of fourth delivery pipe (17) with bin outlet (22) are linked together, and the other end sets up the middle part of cinder holding tube (18), and with the inside of cinder holding tube (18) is linked together, the inside of cinder holding tube (18) is provided with drive screw (20) along the length direction of self, the one end of drive screw (20) with motor (19) link to each other, keep away from on cinder holding tube (18) the vertical fifth delivery pipe (21) that is linked together rather than inside that is provided with of one end lower surface of motor (19).
5. The pulverized coal gasification furnace of an internal circulation fluidized bed according to claim 1, wherein a material guide cylinder (16) is arranged at the bottom of the interior of the furnace body (1), the material guide cylinder (16) is funnel-shaped, and the bottom is communicated with the upper end of the discharge opening (22).
6. The internally circulating fluidized-bed pulverized coal gasification furnace according to claim 1, wherein a gas discharge solenoid valve (8) is provided at an upper end of the first discharge pipe (7).
7. The internally circulating fluidized-bed pulverized coal gasification furnace according to claim 1, wherein a pneumatic tube is provided to a side of the discharge pipe (3).
8. The pulverized coal gasification furnace of an internal circulating fluidized bed according to claim 1, wherein a heat-insulating refractory lining layer (23) is laid on the inner side surface of the inner cavity of the furnace body (1).
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| CN202011371563.3A CN112480970A (en) | 2020-11-30 | 2020-11-30 | Internal circulating fluidized bed pulverized coal gasification furnace |
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| CN202011371563.3A CN112480970A (en) | 2020-11-30 | 2020-11-30 | Internal circulating fluidized bed pulverized coal gasification furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114472790A (en) * | 2021-12-20 | 2022-05-13 | 芜湖万联新能源汽车零部件有限公司 | Robot clamp for high-temperature forge piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114472790A (en) * | 2021-12-20 | 2022-05-13 | 芜湖万联新能源汽车零部件有限公司 | Robot clamp for high-temperature forge piece |
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