CN217057520U - Control system for preparing fuel by using pulverized coal - Google Patents
Control system for preparing fuel by using pulverized coal Download PDFInfo
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- CN217057520U CN217057520U CN202220429264.9U CN202220429264U CN217057520U CN 217057520 U CN217057520 U CN 217057520U CN 202220429264 U CN202220429264 U CN 202220429264U CN 217057520 U CN217057520 U CN 217057520U
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Abstract
The utility model relates to a coal chemical industry field discloses a buggy preparation fuel control system, and this buggy preparation fuel control system includes: the gas pipeline and the fuel gas pipeline are connected, the side face of the natural gas pipeline is located between the crossover pipeline and the central burner, the jacket pipeline is communicated with the jacket, a first valve is arranged on the natural gas pipeline between the jacket pipeline and the central burner, a second valve is arranged on the fuel gas pipeline between the crossover pipeline and the annular burner, a third valve is arranged on the jacket pipeline, and a fourth valve is arranged on the crossover pipeline. The pulverized coal preparation fuel control system has the advantages of good combustion effect, stable combustion, design load of the coal mill, reduction of the usage amount of natural gas and reduction of production cost.
Description
Technical Field
The utility model relates to a coal chemical industry field specifically relates to a buggy preparation fuel control system.
Background
The coal-based olefin project gasification device of our company is the first commercial GSP pulverized coal pressurized gasification device, the coal preparation device adopts the process technology of 'primary coal grinding drying + primary pulverized coal separating and collecting', the main task is to prepare qualified pulverized coal from raw coal from coal storage and transportation after grinding, drying and sorting, the qualified pulverized coal is conveyed to the gasification device through low-pressure nitrogen and is subjected to partial oxidation reaction with pure oxygen and superheated steam to produce synthesis gas, the device has 8 coal grinding production lines, the normal operation is 6-generation and 2-generation, and the amount of the produced pulverized coal per hour is about 340 tons.
The coal preparation device is firstly applied industrially by the GSP gasification technology, a pulverized coal preparation system has design defects, a hot blast stove has low thermal efficiency in the operation process, a coal mill cannot run at full load, the unit consumption of natural gas is high, the carbon monoxide content of the system is high, and potential safety hazards exist.
The heat source of the coal powder preparation system is provided by a hot blast stove, fuel for normally operating the hot blast stove is fuel gas from a pipe network, combustion air is provided by a combustion air fan, the fuel gas quantity and the combustion air quantity are adjusted in proportion and then are respectively sent into the hot blast stove through a fuel gas pipeline and a combustion air pipeline to be combusted to generate heat, and the fuel used in the ignition and initial start-up stages of the hot blast stove is natural gas. The hot blast stove burner is divided into a central burner and an annular burner, natural gas is combusted at the central burner, and fuel gas is combusted at the annular burner.
The existing pulverized coal preparation fuel control system has the following defects:
1. the fuel gas of the hot blast stove is combusted at the annular burner, the combustion efficiency is low when the fuel gas is used independently in normal operation, the heat load of the hot blast stove is low, and the normal load of a coal mill cannot be met; 2. the consumption of natural gas is large, the unit consumption is high, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect that prior art exists, providing a buggy preparation fuel control system, this buggy preparation fuel control system's combustion effect is good, and the burning is stable, and the coal pulverizer load reaches the design load, and the natural gas use amount reduces, and carbon monoxide content reduces, and manufacturing cost reduces.
In order to achieve the above object, the present invention provides a pulverized coal preparation fuel control system, which comprises: the novel gas burner comprises a central burner, an annular burner, a jacket, a natural gas pipeline and a fuel gas pipeline, wherein a crossover pipeline is arranged between the natural gas pipeline and the fuel gas pipeline, the natural gas pipeline is communicated with the central burner, the fuel gas pipeline is communicated with the annular burner, the side face of the natural gas pipeline is located between the crossover pipeline and the central burner, the jacket pipeline is communicated with the jacket, a first valve is arranged between the jacket pipeline and the central burner on the natural gas pipeline, a second valve is arranged between the crossover pipeline and the annular burner on the fuel gas pipeline, a third valve is arranged on the jacket pipeline, and a fourth valve is arranged on the crossover pipeline.
Preferably, the front end of the central burner is a spherical surface, a plurality of first air holes are formed in the spherical surface, the first air holes are circumferentially arranged and are provided with a plurality of circles, and a first connector connected with the natural gas pipeline is arranged at the rear end of the central burner.
Preferably, a plurality of second air holes are formed in the front end of the annular burner along the circumferential direction, and a second connector connected with the fuel gas pipeline is arranged at the rear end of the annular burner.
Preferably, the annular burner comprises: the burner comprises a central burner and a plurality of air guide pipes, wherein the central burner is coaxially arranged in the annular pipe, the front side end face of the annular pipe is provided with a plurality of axially extending air guide pipes along the circumferential direction, the front end of each air guide pipe is provided with a plurality of tangentially arranged air outlet pipes, and the front end of each air outlet pipe is provided with a plurality of second air holes.
Preferably, the plurality of second air holes on the air outlet pipe are symmetrically arranged on two sides of the front end of the air outlet pipe.
Preferably, the plurality of air outlet pipes are arranged at equal intervals in the circumferential direction.
Preferably, the diameter of the annular tube is larger than the diameter of the air duct and the air outlet tube.
Preferably, the jacket is fixedly sleeved on the central burner, a plurality of third air holes are formed in the front end of the jacket in the circumferential direction, and a third connector connected with the jacket pipeline is arranged at the rear end of the jacket.
Preferably, the first valve, the second valve, the third valve and the fourth valve are all hand valves.
Preferably, the annular burner is fixed on the jacket through a connecting piece.
Through the technical scheme, the control system for preparing the fuel by the pulverized coal has the following advantages: the combustion effect is good, the combustion is stable, the coal mill load reaches the design load, the natural gas usage amount is reduced, the carbon monoxide content is reduced, and the production cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of a pulverized coal-to-fuel control system;
FIG. 2 is a bottom view of a preferred embodiment of a pulverized coal preparation fuel control system;
fig. 3 is a sectional structural view of a preferred embodiment of a pulverized coal-producing fuel control system.
Description of the reference numerals
1-a first valve; 2-a second valve; 3-a third valve; 4-a fourth valve; 5-a natural gas line; 6-fuel gas line; 7-a jumper line; 8-a central burner; 9-annular burner; 10-jacketed piping; 11-a hot blast stove; 12-an annular tube; 13-a jacket; 14-an air outlet pipe; 15-gas-guide tube; 16-a first air hole; 17-a second air vent; 18-a third air vent; 19-a second interface; 20-connecting piece.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the description herein is provided for illustration and explanation of the invention and is not intended to limit the invention.
In the present invention, unless otherwise specified, the terms "upper, lower, left, right, front, rear, inside and outside" and the like included in the terms refer to the orientation of the terms in a normal use state or a plain language understood by those skilled in the art, and should not be construed as limiting the terms.
Referring to the pulverized coal-preparation fuel control system shown in fig. 1, the pulverized coal-preparation fuel control system includes: a central burner 8, an annular burner 9, a jacket 13, a natural gas pipeline 5 and a fuel gas pipeline 6, a crossover pipeline 7 is arranged between the natural gas pipeline 5 and the fuel gas pipeline 6, the natural gas pipeline 5 is communicated with the central burner 8, the fuel gas pipeline 6 is communicated with the annular burner 9, a jacket pipeline 10 is arranged on the side surface of the natural gas pipeline 5 between the crossover pipeline 7 and the central burner 8, the jacket pipeline 10 is communicated with the jacket 13, a first valve 1 is arranged on the natural gas pipeline 5 between the jacket pipeline 10 and the central burner 8, a second valve 2 is arranged on the fuel gas pipeline 6 between the crossover pipeline 7 and the annular burner 9, a third valve 3 is arranged on the jacket pipeline 10, and a fourth valve 4 is arranged on the jumper pipeline 7.
Through the implementation of the technical scheme, the control system for preparing the fuel from the pulverized coal has the advantages of good combustion effect, stable combustion, design load of the coal mill, reduction of the use amount of natural gas, reduction of the content of carbon monoxide and reduction of production cost. Specifically, the pulverized coal preparation fuel control system optimizes a central burner 8 of a hot blast stove 11, a jacket 13 is additionally arranged on the outer ring of the central burner 8, a plurality of third air holes 18 are formed in the tail end of the jacket 13, a jacket pipeline 10 is additionally arranged, a jumper pipeline 7 is additionally arranged between a natural gas pipeline 5 and a fuel gas pipeline 6, a fourth valve 4 on the jumper pipeline 7 is opened when the fuel gas is used in normal operation, and the natural gas is withdrawn, at the same time, the central burner 8, the jacket 13 and an annular burner 9 simultaneously use the fuel gas, in addition, the flow of the fuel gas or the natural gas can be controlled through a first valve 1, a second valve 2 and a third valve 3, and through the adjustment mode, the natural gas flow is enabled to be controlled from the original 120m 3 The volume/h is reduced to 20m 3 And in addition, because the fuel gas is simultaneously used by the central burner 8, the jacket 13 and the annular burner 9 during normal operation, the load of the coal mill can reach the design load.
In this embodiment, as shown in fig. 2, in order to further provide a central burner 8 to improve the combustion effect, the front end of the central burner 8 is set as a spherical surface, a plurality of first air holes 16 are provided on the spherical surface, the plurality of first air holes 16 are circumferentially arranged and provided with a plurality of circles, and the rear end of the central burner 8 is provided with a first interface connected with the natural gas pipeline 5. The first gas pocket 16 of many circles sets up with heart, and the interval between a plurality of first gas pockets 16 in every circle is the same, can improve the homogeneity of giving vent to anger, and then promotes the combustion effect.
In this embodiment, in order to further provide an annular burner 9, the front end of the annular burner 9 is provided with a plurality of second air holes 17 along the circumferential direction, and the rear end of the annular burner 9 is provided with a second interface 19 connected with the fuel gas pipeline 6. The intervals among the second air holes 17 are the same, so that the air outlet uniformity can be improved, and the combustion effect is further improved.
Further, the annular burner 9 includes: the burner comprises a central burner 8 and a plurality of air guide pipes 15, wherein the central burner 8 is coaxially arranged with a circular pipe 12, a plurality of air guide pipes 15 which axially extend are arranged on the front side end face of the circular pipe 12 along the circumferential direction, a plurality of air outlet pipes 14 which are tangentially arranged are arranged at the front ends of the air guide pipes 15, and a plurality of second air holes 17 are arranged at the front ends of the air outlet pipes 14. When the fuel gas exhausting device is used, fuel gas enters the annular pipe 12 from the second connector 19, the fuel gas in the annular pipe 12 is dispersed to enter the plurality of gas guide pipes 15, and finally enters the gas outlet pipe 14 and is exhausted from the second gas holes 17.
Further, in order to increase the combustion effect, the second air holes 17 of the outlet pipe 14 are symmetrically arranged at both sides of the front end of the outlet pipe 14.
Further, in order to increase the combustion effect, a plurality of outlet pipes 14 are provided at equal intervals in the circumferential direction.
Further, in order to increase the combustion effect, the diameter of the annular tube 12 is larger than the diameters of the air guide tube 15 and the air outlet tube 14. By means of the arrangement, the flow speed of the fuel gas in the annular pipe 12 is increased when the fuel gas enters the gas guide pipe 15, and therefore the combustion effect is increased.
In this embodiment, in order to further provide a jacket 13 to improve the combustion effect, the jacket 13 is fixedly sleeved on the central burner 8, a plurality of third air holes 18 are arranged at the front end of the jacket 13 along the circumferential direction, and a third port connected with the jacket pipeline 10 is arranged at the rear end of the jacket 13. The combustion gas or natural gas in the jacket pipeline 10 enters the jacket 13 from the third port and is discharged from the third air hole 18 for combustion, so that the effect of central combustion can be improved, and further, the overall combustion effect can be improved, and in addition, the third valve 3 can be used for regulating the flow rate, also can be used for closing the air flow in the jacket 13, and can be selectively used or not used for combustion in the jacket 13.
In this embodiment, the first valve 1, the second valve 2, the third valve 3, and the fourth valve 4 are all hand valves. Of course, a solenoid valve can be used instead of the hand valve, and the automation operation can be further improved.
In this embodiment, in order to further provide a way of fixing the annular burner 9, the annular burner 9 is fixed to the jacket 13 by means of a connection piece 20.
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 details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection 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 in order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. A pulverized coal preparation fuel control system, comprising: the burner is characterized by comprising a central burner (8), an annular burner (9), a jacket (13), a natural gas pipeline (5) and a fuel gas pipeline (6), wherein a crossover line (7) is arranged between the natural gas pipeline (5) and the fuel gas pipeline (6), the natural gas pipeline (5) is communicated with the central burner (8), the fuel gas pipeline (6) is communicated with the annular burner (9), a jacket pipeline (10) is arranged between the crossover line (7) and the central burner (8) on the side surface of the natural gas pipeline (5), the jacket pipeline (10) is communicated with the jacket (13), a first valve (1) is arranged between the jacket pipeline (10) and the central burner (8) on the natural gas pipeline (5), a second burner valve (2) is arranged between the crossover line (7) and the annular burner (9) on the fuel gas pipeline (6), the jacket pipeline (10) is provided with a third valve (3), and the jumper pipeline (7) is provided with a fourth valve (4).
2. The pulverized coal preparation fuel control system according to claim 1, wherein the front end of the central burner (8) is provided with a spherical surface, the spherical surface is provided with a plurality of first air holes (16), the first air holes (16) are circumferentially arranged and are provided with a plurality of circles, and the rear end of the central burner (8) is provided with a first interface connected with the natural gas pipeline (5).
3. The pulverized coal preparation fuel control system according to claim 1, wherein a plurality of second air holes (17) are formed in the front end of the annular burner (9) along the circumferential direction, and a second connector (19) connected with the fuel gas pipeline (6) is formed in the rear end of the annular burner (9).
4. The pulverized coal preparation fuel control system according to claim 3, characterized in that the annular burner (9) comprises: the burner is characterized by comprising a ring pipe (12) which is coaxial with the central burner (8), wherein a plurality of axially extending air guide pipes (15) are arranged on the front side end face of the ring pipe (12) along the circumferential direction, a plurality of tangentially arranged air outlet pipes (14) are arranged at the front ends of the air guide pipes (15), and a plurality of second air holes (17) are formed in the front ends of the air outlet pipes (14).
5. The pulverized coal preparation fuel control system according to claim 4, wherein the second air holes (17) of the outlet pipe (14) are symmetrically arranged on both sides of the front end of the outlet pipe (14).
6. The pulverized coal-preparation fuel control system according to claim 4, wherein a plurality of the outlet pipes (14) are arranged at equal intervals in the circumferential direction.
7. The pulverized coal-production fuel control system according to any one of claims 4 to 6, characterized in that the diameter of the annular tube (12) is larger than the diameters of the gas-guide tube (15) and the gas-outlet tube (14).
8. The pulverized coal preparation fuel control system according to claim 1, wherein the jacket (13) is fixedly sleeved on the central burner (8), a plurality of third air holes (18) are formed in the front end of the jacket (13) along the circumferential direction, and a third connector connected with the jacket pipeline (10) is formed in the rear end of the jacket (13).
9. The pulverized coal preparation fuel control system according to claim 1, characterized in that the first valve (1), the second valve (2), the third valve (3) and the fourth valve (4) are all hand valves.
10. The pulverized coal preparation fuel control system according to claim 1, characterized in that the annular burner (9) is fixed to the jacket (13) by a connecting piece (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220429264.9U CN217057520U (en) | 2022-02-28 | 2022-02-28 | Control system for preparing fuel by using pulverized coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220429264.9U CN217057520U (en) | 2022-02-28 | 2022-02-28 | Control system for preparing fuel by using pulverized coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217057520U true CN217057520U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220429264.9U Active CN217057520U (en) | 2022-02-28 | 2022-02-28 | Control system for preparing fuel by using pulverized coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217057520U (en) |
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2022
- 2022-02-28 CN CN202220429264.9U patent/CN217057520U/en active Active
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