CN211822483U - Energy-saving high-efficiency preheating device of water-coal-slurry pressurized gasification furnace - Google Patents
Energy-saving high-efficiency preheating device of water-coal-slurry pressurized gasification furnace Download PDFInfo
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- CN211822483U CN211822483U CN202020036055.9U CN202020036055U CN211822483U CN 211822483 U CN211822483 U CN 211822483U CN 202020036055 U CN202020036055 U CN 202020036055U CN 211822483 U CN211822483 U CN 211822483U
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Abstract
The utility model relates to a coal slurry pressure gasification production technical field, an energy-conserving high-efficient coal slurry pressure gasification stove preheating device, it includes the gasifier, the lock is fought, the cinder notch, the washing tower, the high temperature hot-water tank, evaporation hot-water column and grey water tank, fixed intercommunication has the pipeline of going to lock between gasifier bottom export and the import of lock top portion, fixed intercommunication has the pipeline of going to lock between lock bottom export and the cinder notch import, the intercommunication has the process water pipeline between export of cinder notch lower part and the black water pipeline, fixed mounting has first cinder notch pump on the process water pipeline, first valve has concatenated on the process water pipeline between first cinder notch pump export and the process water pipeline export. The utility model has the advantages of reasonable and compact structure, convenient to use, it is divided into two stages with coal slurry pressurization gasification preheating, and when the system low pressure, the start-up of high pressure water pump is very little to the wearing and tearing volume of equipment and pipeline, and energy resource consumption is lower relatively, has safety, laborsaving, simple and convenient, efficient characteristics.
Description
Technical Field
The utility model relates to a coal slurry pressure gasification production technical field is an energy-conserving high-efficient coal slurry pressure gasification stove preheating device.
Background
The prior gas chemical production device adopts a multi-nozzle pressurized gasification technology, and since the system is started in a trial mode, when the coal water slurry is preheated before the pressurized gasification is started, the power consumption and the water consumption are high in the preheating process of the gasification furnace, and the elbow of the pipeline is seriously abraded. Leakage often appears in the normal operation of the system, the system is often forced to be stopped for treatment, thereby bringing huge economic loss and great safety risk, and in the production process, acid gas CO can be generated2、H2S and other gases are flashed out and discharged into the atmosphere, so that the environmental pollution is increasingly serious. Therefore, the method is green, environment-friendly, energy-saving and efficient and becomes an important focus point in the coal chemical industry.
Disclosure of Invention
The utility model provides an energy-conserving high-efficient coal slurry pressurized gasification stove preheating device has overcome above-mentioned prior art not enough, and it can effectively solve the high pump outlet pipeline elbow department wearing and tearing volume that leads to existence of current pump outlet pressure head big, frequently appear the leak source, the power consumption water consumption is big and the big problem of environmental protection pressure.
The technical scheme of the utility model is realized through following measure: an energy-saving high-efficiency coal water slurry pressurized gasifier preheating device comprises a gasifier, a lock hopper, a slag pool, a washing tower, a high-temperature hot water tank, an evaporation hot water tower and a grey water tank, wherein a low-pressure grey water pipeline is fixedly communicated between an outlet at the lower part of the grey water tank and an inlet at the lower part of the evaporation hot water tower, an evaporation hot water pipeline is fixedly communicated between a first outlet at the lower part of the evaporation hot water tower and the lower part of the high-temperature hot water tank, a high-temperature hot water pipeline is fixedly communicated between an outlet at the lower part of the high-temperature hot water tank and an inlet at the upper part of the washing tower, a black water pipeline is fixedly communicated between an outlet at the lower part of the washing tower and an inlet at the lower part of the gasifier, a lock hopper removing pipeline is fixedly communicated between an outlet at the bottom of the lock hopper and an inlet at the top of the gasifier, a lock hopper outlet is fixedly communicated, a first valve is connected in series on the process water pipeline between the outlet of the first slag pool pump and the outlet of the process water pipeline, and a circulating pipeline is fixedly communicated between the outlet at the lower part of the gasification furnace and the second outlet at the lower part of the evaporation hot water tower.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the first valve is a high-pressure ball valve, and an 8-shaped blind plate is arranged in front of the first valve.
A bypass pipeline is communicated with the process water pipeline between the outlet at the lower part of the slag pool and the inlet of the first slag pool pump, and a second slag pool pump is fixedly installed on the bypass pipeline.
The black water pipe line is fixedly provided with a black water pump, the low-pressure ash water pipe line is fixedly provided with a low-pressure ash water pump, and the high-temperature hot water pipe line is fixedly provided with a high-temperature hot water pump.
Valves are connected in series on the circulation pipeline, the unlocking bucket pipeline and the lock bucket outlet pipeline.
The outlets of the low-pressure ash water pump, the high-temperature hot water pump, the black water pump, the first slag pool pump and the second slag pool pump are all connected with valves in series.
The utility model has the advantages of reasonable and compact structure, convenient to use, it is divided into two stages with coal slurry pressurization gasification preheating, and when the system low pressure, the start-up of high pressure water pump is very little to the wearing and tearing volume of equipment and pipeline, and energy resource consumption is lower relatively, has safety, laborsaving, simple and convenient, efficient characteristics.
Drawings
FIG. 1 is a schematic view of the process of the present invention.
The codes in the figures are respectively: the system comprises a gasification furnace 1, a lock hopper 2, a slag pool 3, a washing tower 4, a high-temperature hot water tank 5, an evaporation hot water tower 6, an ash water tank 7, a low-pressure ash water pipeline 8, an evaporation hot water pipeline 9, a high-temperature hot water pipeline 10, a black water pipeline 11, a lock hopper removal pipeline 12, a lock hopper outlet pipeline 13, a process water pipeline 14, a first slag pool pump 15, a first valve 16, a circulation pipeline 17, a 8-shaped blind plate 18, a bypass pipeline 19, a second slag pool pump 20, a black water pump 21, a low-pressure ash water pump 22 and a high-temperature hot water pump 23.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in figure 1, the energy-saving high-efficiency coal water slurry pressurized gasifier preheating device comprises a gasifier 1, a lock hopper 2, a slag pool 3, a washing tower 4, a high-temperature hot water tank 5, an evaporative hot water tower 6 and a grey water tank 7, wherein a low-pressure grey water pipeline 8 is fixedly communicated between an outlet at the lower part of the grey water tank 7 and an inlet at the lower part of the evaporative hot water tower 6, an evaporative hot water pipeline 9 is fixedly communicated between a first outlet at the lower part of the evaporative hot water tower 6 and the lower part of the high-temperature hot water tank 5, a high-temperature hot water pipeline 10 is fixedly communicated between an outlet at the lower part of the high-temperature hot water tank 5 and an inlet at the upper part of the washing tower 4, a black water pipeline 11 is fixedly communicated between an outlet at the lower part of the washing tower 4 and an inlet at the lower part of the gasifier 1, a lock hopper removal pipeline 12 is fixedly communicated between an outlet at the bottom of the lock hopper 2 and an inlet of the slag pool 3, a, a first slag pool pump 15 is fixedly arranged on the process water pipeline 14, a first valve 16 is connected in series on the process water pipeline 14 between the outlet of the first slag pool pump 15 and the outlet of the process water pipeline 14, and a circulating pipeline 17 is fixedly communicated between the lower outlet of the gasification furnace 1 and the lower second outlet of the evaporation hot water tower 6.
The utility model divides the supply of the chilling water into two stages before the coal water slurry pressurized gasification is started for preheating, and the first stage ensures the chilling water quantity and simultaneously reduces the energy consumption and the workload of personnel to the minimum; the second stage can expose the defects of the repaired system early, and provide sufficient time for the process treatment. And by adopting sectional water supply, when the system is at low pressure, the abrasion of equipment and pipelines caused by starting the high-pressure water pump is less, and the energy consumption is relatively low.
The preheating device of the energy-saving high-efficiency coal water slurry pressurized gasification furnace can be further optimized or/and improved according to actual needs:
as shown in fig. 1, the first valve 16 is a high-pressure ball valve, and an 8-shaped blind plate is arranged in front of the first valve 16. The 8-shaped blind plate is the existing known equipment, and the 8-shaped blind plate can prevent liquid from high pressure and low pressure.
As shown in the attached figure 1, a bypass pipeline 19 is communicated with the process water pipeline 14 between the lower outlet of the slag bath 3 and the inlet of the first slag bath pump 15, and a second slag bath pump 20 is fixedly arranged on the bypass pipeline 19. When the temperature of the hearth of the gasification furnace 1 is preheated to a high-temperature region (above 800 ℃), in order to ensure enough chilling water flow, two slag bath pumps can be started, and the preheated chilling water flow is controlled to be more than 110m for carrying out cultivation/h to meet the requirement.
As shown in fig. 1, a black water pump 21 is fixedly installed on the black water pipeline 11, a low-pressure grey water pump 22 is fixedly installed on the low-pressure grey water pipeline 8, and a high-temperature hot water pump 23 is fixedly installed on the high-temperature hot water pipeline 10.
As shown in fig. 1, valves are connected in series to the circulation line 17, the unlock bucket line 12, and the unlock bucket line 13.
As shown in the attached figure 1, valves are connected in series at the outlets of the low-pressure ash water pump 22, the high-temperature hot water pump 23, the black water pump 21, the first slag pool pump 15 and the second slag pool pump 20.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
The utility model discloses best embodiment's use: before the coal water slurry pressurized gasification starts, the slag pool 3 is supplemented with primary water to establish a liquid level (a first stage); the first slag bath pump 15 is started to open the outlet valve, the merging valve (namely the first valve 16) from the outlet of the first slag bath pump 15 to the black water pipeline 11 is slowly opened, and the process water is sent into a chilling ring of the gasification furnace 1 to be used as chilling water to protect the downcomer from high-temperature erosion. Then the chilling water is recycled to the slag pool 3 for recycling through the lock hopper 2 of the gasification furnace 1, so as to achieve closed circulation. When the temperature of the hearth of the gasification furnace 1 rises to 800 ℃, the second slag pool pump 20 can be started, and the outlet valve of the second slag pool pump 20 is opened to be slowly incorporated into the system.
When the gasification furnace 1 reaches 1110 ℃ (the second stage), and a feeding and driving program is about to enter, a system major cycle is established according to a normal design: firstly, establishing the liquid level of an ash water tank 7 by using primary water, conveying the liquid level to an evaporation hot water tower 6 through a low-pressure ash water pump 22, overflowing hot water in the evaporation hot water tower 6 to a high-temperature hot water tank 5 through an evaporation hot water pipeline 9, and starting a high-temperature hot water pump 23 to convey water into a washing tower 4; when the liquid level of the washing tower 4 is established, starting the black water circulating pump, slowly opening the outlet valve of the black water circulating pump to 5% of the valve position, and slowly closing the first valve 16 and simultaneously fully opening the outlet valve of the black water circulating pump; after the flow of the chilling water is switched and the flow of the chilling water is normal, a black water outlet valve on a circulating pipeline 17 at the lower part of the gasification furnace 1 is opened, the black water flash flow of the gasification furnace 1 is opened, meanwhile, a logic system of the lock hopper 2 is manually kept in a slag discharging state, the 8-shaped blind plate 18 is turned into a blind path, and the gasification furnace 1 executes the feeding operation.
Claims (10)
1. An energy-saving high-efficiency coal water slurry pressurized gasifier preheating device is characterized by comprising a gasifier, a lock hopper, a slag pool, a washing tower, a high-temperature hot water tank, an evaporation hot water tower and a grey water tank, wherein a low-pressure grey water pipeline is fixedly communicated between an outlet at the lower part of the grey water tank and an inlet at the lower part of the evaporation hot water tower, an evaporation hot water pipeline is fixedly communicated between a first outlet at the lower part of the evaporation hot water tower and the lower part of the high-temperature hot water tank, a high-temperature hot water pipeline is fixedly communicated between an outlet at the lower part of the high-temperature hot water tank and an inlet at the upper part of the washing tower, a black water pipeline is fixedly communicated between an outlet at the lower part of the washing tower and an inlet at the lower part of the gasifier, a lock hopper removing pipeline is fixedly communicated between an outlet at the bottom of the gasifier and an inlet at the top of the lock hopper, a lock hopper outlet is fixedly communicated, a first valve is connected in series on the process water pipeline between the outlet of the first slag pool pump and the outlet of the process water pipeline, and a circulating pipeline is fixedly communicated between the outlet at the lower part of the gasification furnace and the second outlet at the lower part of the evaporation hot water tower.
2. The preheating device of the energy-saving high-efficiency coal-water slurry pressurized gasifier according to claim 1, wherein the first valve is a high-pressure ball valve, and an 8-shaped blind plate is arranged in front of the first valve.
3. The preheating device of the energy-saving high-efficiency water-coal-slurry pressurized gasifier according to claim 1 or 2, wherein a bypass pipeline is communicated with a process water pipeline between the outlet at the lower part of the slag pool and the inlet of the first slag pool pump, and a second slag pool pump is fixedly installed on the bypass pipeline.
4. The preheating device of the energy-saving high-efficiency coal-water slurry pressurized gasifier according to claim 1 or 2, wherein a black water pump is fixedly installed on the black water pipeline, a low-pressure ash water pump is fixedly installed on the low-pressure ash water pipeline, and a high-temperature hot water pump is fixedly installed on the high-temperature hot water pipeline.
5. The preheating device of the energy-saving high-efficiency coal-water slurry pressurized gasifier according to claim 3, wherein a black water pump is fixedly installed on the black water pipeline, a low-pressure ash water pump is fixedly installed on the low-pressure ash water pipeline, and a high-temperature hot water pump is fixedly installed on the high-temperature hot water pipeline.
6. The preheating device of the energy-saving high-efficiency coal-water slurry pressurized gasifier according to claim 1, 2 or 5, wherein valves are connected in series on the circulation pipeline, the lockhopper removing pipeline and the lockhopper discharging pipeline.
7. The preheating device of the energy-saving high-efficiency coal-water slurry pressurized gasifier according to claim 3 or the above, wherein valves are connected in series on the circulation pipeline, the pipe for removing the lock hopper and the pipe for discharging the lock hopper.
8. The preheating device of the energy-saving high-efficiency coal-water slurry pressurized gasifier according to claim 4 or the above, wherein valves are connected in series on the circulation pipeline, the pipe for removing the lock hopper and the pipe for discharging the lock hopper.
9. The preheating device of the energy-saving high-efficiency coal water slurry pressurized gasifier according to claim 1, 2, 5, 7 or 8, wherein the outlets of the low-pressure ash water pump, the high-temperature hot water pump, the black water pump, the first slag pool pump and the second slag pool pump are connected in series with valves.
10. The preheating device of the energy-saving high-efficiency water-coal-slurry pressurized gasifier according to claim 3, wherein the outlets of the low-pressure ash water pump, the high-temperature hot water pump, the black water pump, the first slag pool pump and the second slag pool pump are all connected with valves in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020036055.9U CN211822483U (en) | 2020-01-08 | 2020-01-08 | Energy-saving high-efficiency preheating device of water-coal-slurry pressurized gasification furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020036055.9U CN211822483U (en) | 2020-01-08 | 2020-01-08 | Energy-saving high-efficiency preheating device of water-coal-slurry pressurized gasification furnace |
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| CN211822483U true CN211822483U (en) | 2020-10-30 |
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| CN202020036055.9U Active CN211822483U (en) | 2020-01-08 | 2020-01-08 | Energy-saving high-efficiency preheating device of water-coal-slurry pressurized gasification furnace |
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