CN216192102U - Coal gasification device - Google Patents
Coal gasification device Download PDFInfo
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- CN216192102U CN216192102U CN202122521052.1U CN202122521052U CN216192102U CN 216192102 U CN216192102 U CN 216192102U CN 202122521052 U CN202122521052 U CN 202122521052U CN 216192102 U CN216192102 U CN 216192102U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model relates to the field of coal slurry gasification equipment, and discloses a coal gasification device which comprises a coal slurry storage tank (1), a gasification furnace (2), a flash tank (4) and a settling tank (5), wherein a coal slurry outlet of the coal slurry storage tank (1) is connected with a coal slurry inlet of the gasification furnace (2) through a coal slurry pipeline, a black water outlet of the flash tank (4) is connected with the settling tank (5) through a black water pipeline, and the coal slurry in the coal slurry pipeline and the black water in the black water pipeline perform heat exchange through a heat exchange device (6). According to the coal gasification device, the coal slurry in the coal slurry pipeline and the black water in the black water pipeline are subjected to heat exchange through the heat exchange device, so that the waste heat in the black water can be fully utilized to heat the coal slurry, the heat waste in the coal slurry gasification process is reduced, and the production cost is effectively reduced.
Description
Technical Field
The utility model relates to the field of coal slurry gasification equipment, in particular to a coal gasification device.
Background
At present, coal gas devices used in a coal slurry gasification process comprise a coal slurry storage tank, a gasification furnace, a washing tower, a flash tank and a settling tank. The unheated coal slurry enters a gasification furnace from a coal slurry storage tank for gasification, the gasified gas enters a washing tower for washing and then enters the next procedure, and black water discharged from the washing tower flows into a flash tank for heat recovery and then is discharged into a settling tank; and black water in a chilling chamber in the gasification furnace also flows into the flash tank for heat recovery and then is discharged into the settling tank.
Although the high-temperature and high-pressure steam heat in the black water can be recovered by the flash tank, the heat of most of low-temperature and low-pressure steam cannot be effectively recovered, so that partial heat waste is caused, and the waste heat of the black water cannot be fully utilized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provide a coal gasification device which can fully utilize the waste heat of black water, reduce the heat waste in the coal slurry gasification process and effectively reduce the production cost.
In order to achieve the purpose, the utility model provides a coal gasification device which comprises a coal slurry storage tank, a gasification furnace, a flash tank and a settling tank, wherein a coal slurry outlet of the coal slurry storage tank is connected with a coal slurry inlet of the gasification furnace through a coal slurry pipeline, a black water outlet of the flash tank is connected with the settling tank through a black water pipeline, and the coal slurry in the coal slurry pipeline and the black water in the black water pipeline perform heat exchange through a heat exchange device.
Preferably, the coal slurry storage tank is a double-layer storage tank comprising an outer tank and an inner tank, the inner tank is used for containing the coal slurry, the inlet of the outer tank is connected with a black water pipeline between the flash tank and the heat exchange device, the joint of the inlet of the outer tank and the black water pipeline between the flash tank and the heat exchange device is an A position, and the outlet of the outer tank is connected with the black water pipeline between the heat exchange device and the settling tank.
Preferably, the coal slurry storage tank is a single-layer storage tank, a coil pipe surrounding the coal slurry storage tank is arranged on the coal slurry storage tank, an inlet of the coil pipe is connected with a black water pipeline between the flash tank and the heat exchange device, a joint of the inlet of the coil pipe and the black water pipeline is A, and an outlet of the coil pipe is connected with the black water pipeline between the heat exchange device and the settling tank.
Preferably, the flash tank is a high pressure flash tank.
Preferably, a filtering device for filtering particles in the black water pipeline is arranged between the flash tank and the position A of the black water pipeline.
Preferably, a black water pump is arranged between the flash tank and the filtering device, and/or a coal slurry pump is arranged on a coal slurry pipeline between the coal slurry storage tank and the heat exchange device.
Preferably, the heat exchange device comprises one or more heat exchangers connected together in series.
Preferably, the heat exchanger is a shell-and-tube heat exchanger or a jacketed heat exchanger, a detachable filter screen is arranged at a heat medium inlet of the heat exchanger, and filter holes of the filter screen are smaller than those of the filter device.
Preferably, the filtering device comprises two filters connected together in parallel, and the two filters are respectively provided with an independent control switch.
Preferably, a thermometer capable of monitoring the temperature of the coal slurry inside the coal slurry storage tank is arranged on the coal slurry storage tank.
Through the technical scheme, the coal slurry in the coal slurry pipeline of the coal gasification device and the black water in the black water pipeline are subjected to heat exchange through the heat exchange device, so that the waste heat in the black water can be fully utilized to heat the coal slurry, the heat waste in the coal slurry gasification process is reduced, and the production cost is effectively reduced.
Drawings
FIG. 1 is a schematic view of a coal gasification plant according to an embodiment of the present invention;
fig. 2 is a schematic view of a coal slurry tank of a coal gasification apparatus according to an embodiment of the present invention.
Description of the reference numerals
1 coal slurry storage tank, 11 outer tanks, 12 inner tanks, 2 gasifiers, 3 washing towers, 4 flash tanks, 5 settling tanks, 6 heat exchange devices, 7 filtering devices, 8 black water pumps, 9 coal slurry pumps and 10 coil pipes.
Detailed Description
The following detailed description of embodiments of the utility model 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.
As shown in fig. 1, the utility model provides a coal gasification apparatus, which comprises a coal slurry storage tank 1, a gasification furnace 2, a flash tank 4 and a settling tank 5, wherein a coal slurry outlet of the coal slurry storage tank 1 is connected with a coal slurry inlet of the gasification furnace 2 through a coal slurry pipeline, a black water outlet of the flash tank 4 is connected with the settling tank 5 through a black water pipeline, and the coal slurry in the coal slurry pipeline and the black water in the black water pipeline perform heat exchange through a heat exchange device 6. Specifically, a coal slurry outlet of the coal slurry storage tank 1 is connected with a cold medium inlet of the heat exchange device 6, a hot medium outlet of the heat exchange device 6 is connected with a coal slurry inlet of the gasification furnace 2, a black water outlet of the flash tank 4 is connected with a hot medium inlet of the heat exchanger device 6, and a cold medium outlet of the heat exchange device 6 is connected with the settling tank 5.
The working principle of the coal gasification device of the utility model is as follows: black water discharged from a chilling chamber of the gasification furnace 2 and the washing tower 3 flows into the flash tank 4, after high-temperature and high-pressure steam heat in the black water is recovered by the flash tank 4, low-temperature and low-pressure black water is discharged into a black water pipeline from a black water outlet of the flash tank 4, and then flows into the heat exchange device 6 through a heat medium inlet of the heat exchange device 6; the coal slurry flows into the coal slurry pipeline from the coal slurry outlet of the coal slurry storage tank 1 and then flows into the heat exchange device 6 through the cold medium inlet of the heat exchange device 6. In the heat exchanger 6, the black water transfers the waste heat to the coal slurry, and then flows into the settling tank 5 from the cold medium outlet of the heat exchanger 6, and the heated coal slurry flows into the gasification furnace 2 from the hot medium outlet of the heat exchanger 6. According to the coal gasification device, the coal slurry in the coal slurry pipeline and the black water in the black water pipeline are subjected to heat exchange through the heat exchange device, so that the waste heat in the black water can be fully utilized to heat the coal slurry, the heat waste in the coal slurry gasification process is reduced, and the production cost is effectively reduced.
The coal slurry storage tank can be structurally arranged into a double-side storage tank or a single-layer storage tank.
When the coal slurry storage tank 1 is set as a double-layer storage tank, as shown in fig. 1, the coal slurry storage tank 1 comprises an outer tank 11 and an inner tank 12, the inner tank 12 is used for containing coal slurry, the inlet of the outer tank 11 is connected with the black water pipeline between the flash tank 4 and the heat exchange device 6, the joint is the position A, and the outlet of the outer tank 11 is connected with the black water pipeline between the heat exchange device 6 and the settling tank 5. The black water discharged from the flash tank 4 flows into the outer tank 11 through the branch line branched at the position a of the black water pipeline, and flows into the heat exchange device 6 to heat the coal slurry for the second time after the coal slurry in the inner tank 12 is primarily heated by utilizing the waste heat of the black water pipeline. Carry out the direct heating to inner tank 12 through setting up the black water branch road, can further improve the heating effect to the coal slurry, improve the utilization ratio to the black water waste heat.
When the coal slurry storage tank 1 is a single-layer storage tank, as shown in fig. 2, a coil 10 surrounding the coal slurry storage tank 1 is arranged on the coal slurry storage tank 1, an inlet of the coil 10 is connected with a black water pipeline between the flash tank 4 and the heat exchange device 6, a connection position is an a position, and an outlet of the coil 10 is connected with a black water pipeline between the heat exchange device 6 and the settling tank 5. The black water discharged from the flash tank 4 flows into the coil pipe 10 through the branch pipe branched at the position a of the black water pipeline, and after the coal slurry in the coal slurry storage tank is primarily heated by using the waste heat of the black water pipeline, the black water flows into the heat exchange device 6 to secondarily heat the coal slurry. Through setting up the black water branch road, utilizing to encircle the coil pipe in the coal slurry storage tank outside and carry out the direct heating to the coal slurry storage tank, can further improve the heating effect to the coal slurry, improve the utilization ratio to the black water waste heat.
Further, the flash tank 4 is a high-pressure flash tank.
In order to prevent impurities in the black water from blocking the black water pipeline, a filtering device 7 for filtering particles in the black water pipeline is arranged between the flash tank 4 and the position A of the black water pipeline.
A black water pump 8 is arranged between the flash tank 4 and the filtering device 7, and/or a coal slurry pump 9 is arranged on a coal slurry pipeline between the coal slurry storage tank 1 and the heat exchange device 6. The black water pump 8 and the coal slurry pump 9 can respectively improve the flow rate of the black water and the coal slurry, and further improve the waste heat recovery efficiency.
The heat exchange device 6 comprises one or more heat exchangers connected together in series. And selecting a proper number of heat exchangers according to actual field requirements.
Furthermore, the heat exchanger is a shell-and-tube heat exchanger or a jacketed heat exchanger, a detachable filter screen is arranged at the heat medium inlet of the heat exchanger, and the filter holes of the filter screen are smaller than those of the filter device 7. The detachable filter screen is added at the heat medium inlet of the heat exchanger, so that secondary filtration of black water can be realized, and impurities are effectively prevented from being accumulated in the heat exchanger.
The filtering device 7 comprises two filters connected in parallel, and the two filters are respectively provided with an independent control switch. Two filters connected in parallel are arranged, and only one filter can be used and the other filter can be used as a spare filter in specific use.
The coal slurry storage tank 1 is provided with a thermometer which can monitor the temperature of the coal slurry inside the coal slurry storage tank 1, so that the heating effect of the coal slurry in the coal slurry storage tank 1 can be observed.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the utility model, numerous simple modifications can be made to the technical solution of the utility model, including combinations of the individual specific technical features in any suitable way. The utility model is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A coal gasification device is characterized in that: the coal slurry storage tank comprises a coal slurry storage tank (1), a gasification furnace (2), a flash tank (4) and a settling tank (5), wherein a coal slurry outlet of the coal slurry storage tank (1) is connected with a coal slurry inlet of the gasification furnace (2) through a coal slurry pipeline, a black water outlet of the flash tank (4) is connected with the settling tank (5) through a black water pipeline, and coal slurry in the coal slurry pipeline and black water in the black water pipeline carry out heat exchange through a heat exchange device (6).
2. The coal gasification apparatus according to claim 1, characterized in that: coal slurry storage tank (1) is the double-deck storage tank including outer jar (11) and inner tank (12), inner tank (12) are used for holding the coal slurry, the entry of outer jar (11) with flash tank (4) with black water tube coupling and junction between heat transfer device (6) are A department, the export of outer jar (11) with heat transfer device (6) with black water tube coupling between subsider (5).
3. The coal gasification apparatus according to claim 1, characterized in that: the coal slurry storage tank (1) is a single-layer storage tank, a coil pipe (10) surrounding the outer side of the coal slurry storage tank (1) is arranged on the coal slurry storage tank, the inlet of the coil pipe (10) is connected with a black water pipeline between the flash tank (4) and the heat exchange device (6), the joint of the inlet of the coil pipe and the black water pipeline is an A position, and the outlet of the coil pipe (10) is connected with the heat exchange device (6) and the black water pipeline between the settling tanks (5).
4. The coal gasification apparatus according to claim 2 or 3, characterized in that: the flash tank (4) is a high-pressure flash tank.
5. The coal gasification apparatus according to claim 2 or 3, characterized in that: and a filtering device (7) for filtering particles in the black water pipeline is arranged between the flash tank (4) and the position A of the black water pipeline.
6. The coal gasification apparatus according to claim 5, characterized in that: a black water pump (8) is arranged between the flash tank (4) and the filtering device (7), and/or a coal slurry pump (9) is arranged on a coal slurry pipeline between the coal slurry storage tank (1) and the heat exchange device (6).
7. The coal gasification apparatus according to claim 5, characterized in that: the heat exchange device (6) comprises one or more heat exchangers connected together in series.
8. The coal gasification apparatus according to claim 7, characterized in that: the heat exchanger is a shell-and-tube heat exchanger or a jacketed heat exchanger, a detachable filter screen is arranged at a heat medium inlet of the heat exchanger, and filter holes of the filter screen are smaller than those of the filter device (7).
9. The coal gasification apparatus according to claim 5, characterized in that: the filtering device (7) comprises two filters which are connected together in parallel, and the two filters are respectively provided with an independent control switch.
10. The coal gasification apparatus according to claim 1, characterized in that: the coal slurry storage tank (1) is provided with a thermometer capable of monitoring the temperature of the coal slurry inside the coal slurry storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122521052.1U CN216192102U (en) | 2021-10-19 | 2021-10-19 | Coal gasification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122521052.1U CN216192102U (en) | 2021-10-19 | 2021-10-19 | Coal gasification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216192102U true CN216192102U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122521052.1U Active CN216192102U (en) | 2021-10-19 | 2021-10-19 | Coal gasification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216192102U (en) |
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2021
- 2021-10-19 CN CN202122521052.1U patent/CN216192102U/en active Active
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