CN211620426U - Entrained-flow bed pulverized coal gasification device - Google Patents
Entrained-flow bed pulverized coal gasification device Download PDFInfo
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- CN211620426U CN211620426U CN201922215933.3U CN201922215933U CN211620426U CN 211620426 U CN211620426 U CN 211620426U CN 201922215933 U CN201922215933 U CN 201922215933U CN 211620426 U CN211620426 U CN 211620426U
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Abstract
The utility model relates to an entrained flow bed fine coal gasification equipment. This entrained flow fine coal gasification equipment includes gasifier main part and air supply mechanism, the bottom of gasifier main part is provided with row cinder notch, air supply mechanism includes tuber pipe and variable wind mechanism, the tuber pipe set up in row cinder notch department, variable wind mechanism set up in being close to of tuber pipe the one end of row cinder notch, variable wind mechanism includes tube-shape base member, middle part water conservancy diversion spare and whirl blade, whirl blade set up in the outer peripheral face of tube-shape base member and form spiral wind channel, middle part water conservancy diversion spare set up in the cylindric space of tube-shape base member and form middle part vortex wind channel, work as during air supply mechanism air supply, the air current can follow simultaneously spiral wind channel with middle part vortex wind channel gets into row cinder notch. The utility model discloses an entrained flow bed fine coal gasification equipment can improve the temperature of row's cinder notch department, keeps the mobility of liquid sediment, prevents to arrange the cinder notch and blocks up.
Description
Technical Field
The utility model relates to a slag tapping technical field especially relates to an entrained flow fine coal gasification equipment.
Background
With the increasing rigor of energy situation and the increasingly prominent environmental problems, the clean and efficient utilization of coal resources rich in reserves in China becomes an important subject in the current energy field. Coal gasification is an important means for clean and efficient utilization of coal, and high-quality coal gas can be used as industrial clean fuel gas or used for coal chemical industry to generate downstream products with high added values.
It is well known that the melting point of ash in coal (commonly referred to as ash melting point) is not constant and is determined by the composition of the inorganic material itself contained in the original plant of the coal. At present, the more advanced entrained flow pulverized coal gasification device adopts the slag tapping technology according to the attribute of the ash melting point in coal, so whether the slag tapping can be smoothly discharged is the key for ensuring the stable operation of the device, and the liquidity of the slag tapping becomes an important index of coal for gasification. However, in the actual process of entrained flow coal gas production, the temperature at the slag discharging port of the equipment is often difficult to control, sometimes the temperature is lower than the ash melting point, and the liquid slag flows to the slag discharging port to become cold and solidify to block the slag discharging port.
SUMMERY OF THE UTILITY MODEL
Based on the above-mentioned defect among the prior art, the utility model aims to provide an entrained flow bed fine coal gasification equipment that can keep the mobility of liquid sediment, prevent to arrange the jam of cinder notch.
Therefore, the utility model provides the following technical scheme.
The utility model provides an entrained flow bed pulverized coal gasification device, which comprises a gasification furnace main body and an air supply mechanism,
the bottom of the gasification furnace main body is provided with a slag discharge port,
the air supply mechanism comprises an air pipe and an air change mechanism, the air pipe is arranged at the slag discharge port, the air change mechanism is arranged at one end of the air pipe close to the slag discharge port,
the wind changing mechanism comprises a cylindrical base body, a middle guide part and a rotational flow blade,
the swirl vanes are arranged on the outer peripheral surface of the cylindrical base body to form a spiral air duct, the middle guide part is arranged in the cylindrical space of the cylindrical base body to form a middle vortex air duct,
when the air supply mechanism supplies air, air flow can enter the slag discharge port from the spiral air duct and the middle vortex air duct simultaneously.
In at least one embodiment, the upper end surface of the air supply mechanism is positioned below the slag discharge port, and the distance between the upper end surface of the air supply mechanism and the slag discharge port is not more than 100 mm; or the upper end surface of the air supply mechanism is flush with the slag discharge port.
In at least one embodiment, a tapered portion is formed at a bottom of the gasification furnace main body,
the upper end surface of the air supply mechanism is positioned above the slag discharge port, and the upper end surface of the air supply mechanism is not higher than the top end of the conical part.
In at least one embodiment, the central baffle includes a dome portion and a post portion,
the diameter of the upper end surface of the circular table part is larger than that of the lower end surface of the circular table part,
the columnar part extends from the lower end face of the circular table part and deviates from the circular table part along the axial direction of the wind changing mechanism.
In at least one embodiment, the cross section of the columnar portion is circular, and the diameter of the columnar portion is smaller than the diameter of the lower end face of the circular truncated cone portion.
In at least one embodiment, the central axes of the central baffle, the cylindrical base and the air hose at the one end are collinear.
In at least one embodiment, one end of the blast pipe close to the slag discharge port is vertically arranged.
In at least one embodiment, the central axis of the end of the air duct near the slag discharge opening is collinear with the central axis of the slag discharge opening.
In at least one embodiment, the swirl vanes are provided in plurality, and the plurality of swirl vanes are uniformly spaced apart in the circumferential direction of the cylindrical base.
Through adopting foretell technical scheme, the utility model provides an entrained flow fine coal gasification equipment, through setting up air supply mechanism, the variable wind mechanism among the air supply mechanism forms spiral wind channel and middle part vortex wind channel, can supply air to gasification equipment's row cinder notch uniformly for the air current can hold the buggy that wafts to row cinder notch department, and mix the burning uniformly with it, and then can improve the temperature of row cinder notch department, keeps the mobility of liquid sediment, prevents to arrange the cinder notch and blocks up.
Drawings
Fig. 1 shows a schematic structural view of an entrained flow pulverized coal gasification device according to the invention.
Fig. 2 shows a schematic view of the blower mechanism and the air duct in fig. 1.
Fig. 3 shows a cross-sectional view of fig. 2.
Description of the reference numerals
1, a gasification furnace main body; 11, a slag discharge port; 12, a slag pool; 13 a tapered portion; 14 a cylindrical portion;
2, an air supply mechanism; 21 air pipes; 22 a variable wind mechanism; 221 a cylindrical base body; 222 swirl vanes; 2221 a spiral duct; 223 middle flow guide member; 2231 middle vortex air duct; 2232 a circular table part; 2233 a columnar portion; 224 a connecting plate; 23 blower.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the invention, and is not intended to exhaust all possible ways of practicing the invention, nor is it intended to limit the scope of protection of the invention.
An embodiment of an entrained-flow pulverized coal gasification apparatus according to the invention is explained in detail below with reference to fig. 1 to 3.
In the present embodiment, as shown in fig. 1, an entrained flow pulverized coal gasification apparatus according to the present invention includes a gasification furnace main body 1 and an air blowing mechanism 2.
The bottom of the gasification furnace main body 1 is provided with a slag discharge port 11, a slag bath 12, a conical part 13 and a cylindrical part 14, wherein the slag discharge port 11 is used for discharging liquid slag generated during gasification reaction of the gasification device, and the liquid slag is discharged into the slag bath 12 positioned below the slag discharge port 11. The lower end of the tapered portion 13 having a large top and a small bottom is connected to the upper end of the cylindrical portion 14, and the lower end of the cylindrical portion 14 is open to form the slag hole 11 (i.e., the lower end surface of the cylindrical portion 14 is a plane where the slag hole 11 is located). The conical part 13 and the cylindrical part 14 are arranged to facilitate the liquid slag to be gathered and discharged from the slag discharge port 11 to the slag bath 12.
In the present embodiment, as shown in fig. 1 and 2, the air blowing mechanism 2 includes an air duct 21, an air changing mechanism 22, and a fan 23. One end of the air pipe 21 is arranged at the slag discharge port 11, the other end of the air pipe is connected with the fan 23, and the air change mechanism 22 is arranged at one end of the air pipe 21 close to the slag discharge port 11. The blower 23 is used to deliver a combustible gas (e.g., air, oxygen, liquefied gas, etc.) into the duct 21.
In the present embodiment, one end of the blast pipe 21 near the slag discharge port 11 is vertically disposed. Thus, the effect of blowing air from the air pipe 21 to the slag discharge opening 11 is improved.
The central axis of the end of the blast pipe 21 close to the slag discharge opening 11 and the central axis of the slag discharge opening 11 can be collinear. Thus, the air duct 21 can uniformly supply air to the slag discharging port 11.
In the present embodiment, the cross section of the duct 21 may be circular. The diameter of the air duct 21 may be 90mm to 130mm, and the length may be 200mm to 2000 mm.
In the present embodiment, as shown in fig. 2 and 3, the wind changing mechanism 22 includes a cylindrical base 221, swirl blades 222, a middle baffle 223, and a connecting plate 224.
The cylindrical base 221 may have a circular cross-section. The diameter of the cylindrical base 221 may be 80mm to 120mm, and the axial length may be 60mm to 90 mm.
The swirl vanes 222 are provided on the outer circumferential surface of the cylindrical base 221 to form a spiral air passage 2221. The swirl blades 222 may be plural, and the plural swirl blades 222 are uniformly spaced apart in the circumferential direction of the cylindrical base 221. Thus, after the air flow passes through the spiral air duct 2221, the flow velocity can be reduced, and the spiral air flow can wrap the pulverized coal falling to the slag discharge port 11 and mix with the pulverized coal for combustion.
The middle guide member 223 is disposed in the cylindrical space of the cylindrical base 221, and a middle vortex duct 2231 is formed between the middle guide member 223 and the cylindrical base 221.
As shown in fig. 3, the middle guide 223 includes a circular truncated part 2232 and a cylindrical part 2233. The diameter of the upper end surface of the circular truncated cone 2232 is larger than the diameter of the lower end surface of the circular truncated cone 2232, and the columnar portion 2233 extends from the lower end surface of the circular truncated cone 2232 away from the circular truncated cone 2232 in the axial direction of the wind changing mechanism 22. Thus, after the airflow passes through the circular truncated cone 2232, the airflow forms a vortex backflow, the flow velocity is reduced, and the pulverized coal falling to the slag discharge port 11 can be effectively supported, so that sufficient time is provided for mixed combustion.
In the present embodiment, as shown in fig. 3, in a longitudinal cross section of the circular truncated cone 2232, the outer wall surface of the circular truncated cone 2232 is formed in a linear shape that is inclined. Of course, the present invention is not limited to this, and the outer wall surface of the circular truncated cone 2232 may be curved so as to be recessed radially toward the center axis of the circular truncated cone 2232. That is, the side wall of the circular truncated cone 2232 may be formed as a curved surface that is concave in the radial direction. Therefore, the airflow can be decelerated better, vortex backflow is formed, and the pulverized coal falling to the slag discharging port 11 can be supported more favorably.
In the present embodiment, the central axis of the columnar portion 2233 and the central axis of the circular truncated cone portion 2232 may be collinear. In this way, a uniform flow of the gas stream is facilitated.
In the present embodiment, the cross section of the columnar portion 2233 may be circular, and the diameter of the columnar portion 2233 is smaller than the diameter of the lower end surface of the circular truncated portion 2232. Thus, the air intake amount of the middle scroll duct 2231 can be increased, and the air supply effect can be improved.
In the present embodiment, the diameter of the columnar portion 2233 may be 20mm to 40mm, and the axial length may be 60mm to 100 mm.
In the present embodiment, as shown in fig. 2 and 3, the columnar portion 2233 and the cylindrical base 221 are connected by the connecting plate 224. One end of the connecting plate 224 is connected (e.g., welded) to the outer peripheral surface of the columnar portion 2233, and the other end is connected (e.g., welded) to the inner wall surface of the cylindrical base 221. Of course, the present invention is not limited thereto, and the column portions 2233 may be connected to the tubular base 221 by a connecting rod or other connecting member.
It should be noted that the number of the connection plates 224 is not limited in this embodiment, and may be one or more.
In the present embodiment, as shown in fig. 1 and 3, the central axes of the tubular base 221, the middle deflector 223, and the blast pipe 21 near the slag discharge port 11 may be collinear. Thus, the air supply can be performed uniformly.
In the present embodiment, as shown in fig. 3, the entire variable air mechanism 22 is basically provided inside the duct 21. Wherein, the air changing mechanism 22 can be connected with the air pipe 21 by welding.
In the embodiment, the upper end surface of the air supply mechanism 2 can be positioned below the slag discharge port 11, and the distance between the upper end surface and the slag discharge port 11 is not more than 100 mm; the upper end surface of the air supply mechanism 2 can also be positioned above the slag discharge port 11 and does not exceed the upper end of the conical part 13; of course, the upper end surface of the air blowing mechanism 2 may be flush with the slag discharge port 11 (i.e., flush with the lower end surface of the cylindrical portion 14).
In the present embodiment, when air is supplied to the slag discharge port 11 through the air duct 21, the air flow can simultaneously supply air to the slag discharge port 11 from the spiral air duct 2221 and the middle vortex air duct 2231, and the spiral air flow formed by the spiral air duct 2221 can wrap and mix with the pulverized coal falling to the slag discharge port 11; the middle vortex air duct 2231 can form vortex backflow, so that the flow velocity of the air flow is reduced, and the pulverized coal falling to the slag discharge port 11 can be effectively supported, so that the mixed combustion can be performed in sufficient time. The cooperation of spiral wind channel 2221 and middle part vortex wind channel 2231 is used for air supply mechanism 2 can be evenly to the row cinder notch 11 air supply, holds the buggy that wafts down effectively on row cinder notch 11's whole cross section, makes this buggy burning to the at utmost, and then improves the temperature of row cinder notch 11 department to the at utmost, has guaranteed the mobility of liquid sediment, prevents to arrange the cinder notch 11 jam.
Through adopting the technical scheme, according to the utility model discloses an entrained flow fine coal gasification equipment has following advantage at least:
(1) the utility model discloses an among the entrained flow powder gasification device, through setting up air supply mechanism, the variable-draft mechanism among the air supply mechanism forms spiral wind channel and middle part vortex wind channel, can supply air to gasification equipment's row cinder notch uniformly for the air current can hold the buggy that wafts to row cinder notch department, and mix the burning uniformly with it, and then can improve the temperature of row cinder notch department, keeps the mobility of liquid sediment, prevents to arrange the cinder notch and blocks up.
(2) The utility model discloses an among the entrained flow bed powder coal gasification equipment, middle part water conservancy diversion spare, tube-shape base member and the central axis collineation of the tuber pipe three that is close to slag notch one end are favorable to supplying air uniformly.
(3) The utility model discloses an among the entrained flow bed powder gasification device, the vertical setting of one end that is close to the cinder notch of tuber pipe, the central axis that is close to the one end of cinder notch of tuber pipe and the central axis collineation of cinder notch are favorable to making the tuber pipe to evenly supplying air to the cinder notch.
The above embodiments of the present invention have been described in detail, but it should be added that:
(1) although the vertical arrangement of the one end of the air pipe close to the deslagging port is described in the above embodiment, the present invention is not limited to this, and the one end of the air pipe close to the deslagging port can also be arranged at a certain angle with the vertical direction, and the specific angle can be selected according to the needs of actual conditions.
(2) Although it has been described in the above embodiment that the cross-section of the duct, the cylindrical base body, and the columnar portion is circular, the present invention is not limited thereto, and the cross-section of the duct, the cylindrical base body, and the columnar portion may be polygonal or other shapes.
(3) Although the lower end of the columnar portion and the lower end of the tubular base body are welded to each other in the above embodiment, the present invention is not limited thereto, and the columnar portion and the tubular base body may be integrally molded. Further, the swirl vanes may be formed integrally with the cylindrical base body.
(4) Although only one air duct is shown in fig. 1, the present invention is not limited thereto, and the number of the air ducts may be two, three or more, and the upper ends of the plurality of air ducts may be flush with each other, or may be staggered in the vertical direction.
(5) The air changing mechanism in the above embodiment may be completely disposed inside the air duct, or may be partially disposed outside the air duct.
(6) Although the air supply by the fan is described in the above embodiment, the present invention is not limited to this, and air may be supplied by an air compressor (the flow rate of air may be adjusted as needed) or other devices capable of supplying air.
(7) Although the embodiment described above has described that the lower end opening of the cylindrical portion 14 is formed as the slag discharge port 11, the present invention is not limited to this, and the cylindrical portion 14 may not be provided, and in this case, the lower end opening of the tapered portion 13 is formed as the slag discharge port.
Claims (9)
1. An entrained flow bed pulverized coal gasification device is characterized by comprising a gasification furnace main body (1) and an air supply mechanism (2),
a slag discharge port (11) is arranged at the bottom of the gasification furnace main body (1),
the air supply mechanism (2) comprises an air pipe (21) and an air change mechanism (22), the air pipe (21) is arranged at the slag discharge port (11), the air change mechanism (22) is arranged at one end of the air pipe (21) close to the slag discharge port (11),
the wind changing mechanism (22) comprises a cylindrical base body (221), a middle guide part (223) and swirl blades (222),
the swirl blades (222) are arranged on the outer peripheral surface of the cylindrical base body (221) to form a spiral air channel (2221), the middle guide part (223) is arranged in the cylindrical space of the cylindrical base body (221) to form a middle vortex air channel (2231),
when the air supply mechanism (2) supplies air, air flow can enter the slag discharging port (11) from the spiral air duct (2221) and the middle vortex air duct (2231) at the same time.
2. The entrained-flow pulverized coal gasification device according to claim 1, wherein an upper end surface of the air supply mechanism (2) is located below the slag discharge port (11), and a distance between the upper end surface of the air supply mechanism (2) and the slag discharge port (11) is not more than 100 mm; or the upper end surface of the air supply mechanism (2) is flush with the slag discharge port (11).
3. The entrained-flow pulverized coal gasification apparatus according to claim 1, wherein a bottom of the gasifier body (1) is formed with a tapered portion (13),
the upper end surface of the air supply mechanism (2) is positioned above the slag discharge port (11), and the upper end surface of the air supply mechanism (2) is not higher than the top end of the conical part (13).
4. The entrained-flow pulverized coal gasification device according to claim 1, characterized in that the middle baffle (223) comprises a circular table portion (2232) and a columnar portion (2233),
the diameter of the upper end surface of the circular truncated cone part (2232) is larger than that of the lower end surface of the circular truncated cone part (2232),
the columnar portion (2233) extends from the lower end surface of the circular table portion (2232) in the axial direction of the wind changing mechanism (22) away from the circular table portion (2232).
5. The entrained-flow pulverized coal gasification device according to claim 4, characterized in that the columnar portion (2233) is circular in cross section, and the diameter of the columnar portion (2233) is smaller than the diameter of the lower end face of the circular truncated cone portion (2232).
6. An entrained-flow pulverized coal gasification device according to claim 1, characterized in that the central axes of the middle deflector (223), the cylindrical base body (221) and the one-end air duct (21) are collinear.
7. An entrained-flow pulverized coal gasification unit as claimed in claim 1, characterized in that the end of the air duct (21) close to the slag discharge opening (11) is arranged vertically.
8. An entrained-flow pulverized coal gasification unit as claimed in claim 7, characterized in that the central axis of the end of the air duct (21) close to the slag tap (11) is collinear with the central axis of the slag tap (11).
9. An entrained-flow pulverized coal gasification device according to claim 1, wherein the swirl vanes (222) are plural, and the plural swirl vanes (222) are provided at regular intervals in a circumferential direction of the cylindrical base body (221).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019219155322 | 2019-11-07 | ||
| CN201921915532 | 2019-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211620426U true CN211620426U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922215933.3U Active CN211620426U (en) | 2019-11-07 | 2019-12-11 | Entrained-flow bed pulverized coal gasification device |
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|---|---|
| CN (1) | CN211620426U (en) |
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- 2019-12-11 CN CN201922215933.3U patent/CN211620426U/en active Active
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