CN218579894U - Slag discharging and black water discharging system of gasification washing tower - Google Patents
Slag discharging and black water discharging system of gasification washing tower Download PDFInfo
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- CN218579894U CN218579894U CN202222795295.9U CN202222795295U CN218579894U CN 218579894 U CN218579894 U CN 218579894U CN 202222795295 U CN202222795295 U CN 202222795295U CN 218579894 U CN218579894 U CN 218579894U
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Abstract
The utility model discloses a sediment black water discharging system is arranged to gasification scrubbing tower belongs to coal slurry gasification equipment, the utility model discloses the technical problem that solves is that scrubbing tower black water discharging pipeline blocks up, and the technical scheme of adoption is: the structure of the device comprises a washing tower, a high-pressure flash tank, a slag discharging tank and a gasification slag dragging machine, wherein a first black water discharging pipeline is arranged on the side surface of the washing tower, a second slag discharging pipeline is arranged at the bottom of a washing tower cone, the first slag discharging pipeline comprises two paths which are respectively a second black water discharging pipeline and a main slag discharging pipeline, and the first black water discharging pipeline and the second black water discharging pipeline are respectively communicated with the high-pressure flash tank through black water pipelines; the main slag discharging pipeline is communicated with a slag discharging tank, and the slag discharging tank is communicated with the gasification slag conveyor through a water drainage pipeline and a slag discharging branch pipeline respectively; a slag collecting valve assembly is arranged on the slag discharging main pipe line; a water drain valve is arranged on the water drain pipeline; and a slag discharging valve is arranged on the slag discharging branch pipe line.
Description
Technical Field
The utility model relates to a coal water slurry gasification equipment, specifically speaking are sediment row black water system of gasification scrubbing tower.
Background
Oxygen and coal water slurry of an entrained flow bed water coal slurry gasification furnace react in the furnace, a black discharge pipeline of a washing tower is easy to block, the system is not thoroughly cleaned during maintenance mainly at the initial feeding stage, a large amount of black ash is brought to the washing tower due to low load, low furnace temperature, poor coal slurry atomization and insufficient combustion after feeding, the temperature of a pipeline body of equipment rises along with the rise of the furnace temperature, a large amount of scale pieces fall off, and black water is discharged to remove high flash after 1.0mpa of the original process, so that the pipeline is easy to block at the moment.
The washing tower black water discharging pipeline has two paths: one path is arranged at the conical bottom of the washing tower, and the normal drainage walking bottom is designed; the other path of the washing tower is arranged on the side surface of the cone bottom, and water is drained to the side surface when the bottom is not communicated. However, the working condition of the washing tower is severe, the solid content of washing water is high, the alkalinity is high, the hardness is high, the water temperature is high, the dust deposition and scaling are aggravated, the bottom is polluted and blocked after the car is started and the materials are fed, and the long-period operation of the gasification system is seriously influenced after the side surface is opened for drainage.
Due to the limitation of the black water discharging flow of the existing gasification washing tower, the problem that black water discharging pipelines of the washing tower are blocked and water discharging of the washing tower is communicated when the washing tower is driven by each manufacturer can not be effectively solved, and pipelines need to be disassembled on site for cleaning in the disposal process, so that the safe and stable operation of the device is seriously influenced.
The working process of the existing process system is as follows: before the gasifier is started to feed, a blowdown and guide sprinkling channel of the washing tower is closed, a drain valve at the bottom of the washing tower is closed, a drain valve at the side of the washing tower is closed, the system pressure after feeding is 1.0mpa, the drain valve at the bottom of the washing tower is opened, a drain regulating valve is opened, a first pressure reducing angle valve and a second pressure reducing angle valve are opened, and black water in the washing tower is drained into a high-pressure flash tank; the process can not discharge slag blocks in the system in time, and the risk that the system is driven, falls off ash slag and blocks a drainage pipeline of the washing tower exists. Meanwhile, the defects that the washing tower does not discharge water for a period of time after the gasifier is fed, system accumulated slag and incompletely combusted pulverized coal are accumulated at the conical bottom of the washing tower, and a black water discharge pipeline of the washing tower is blocked due to the fact that a bottom water discharge valve is opened during water discharge exist.
Disclosure of Invention
The technical task of the utility model is to provide a sediment black water drainage system is arranged to gasification scrubbing tower, solve the problem that scrubbing tower black water drainage pipeline blockked up.
The technical task of the utility model is realized according to the following mode, a slag and black water discharging system of gasification washing tower, including washing tower, high-pressure flash tank, slag discharging tank and gasification dragveyer, the side of washing tower is provided with a black water discharging pipeline I, the bottom of washing tower cone is provided with a slag and black water discharging pipeline, the slag and black water discharging pipeline comprises two paths, which are respectively a black water discharging pipeline II and a slag discharging main pipeline, the black water discharging pipeline I and the black water discharging pipeline II are respectively communicated with the high-pressure flash tank through the black water pipeline;
the main slag discharging pipeline is communicated with a slag discharging tank, and the slag discharging tank is communicated with the gasification slag conveyor through a water drainage pipeline and a slag discharging branch pipeline respectively; a slag collecting valve assembly is arranged on the slag discharging main pipe line; a water drain valve is arranged on the water drain pipeline; and a slag discharging valve is arranged on the slag discharging branch pipe line.
Wherein, the distance between the slag collecting valve component and the washing tower is equal to the sum of the thickness of the flange for the slag discharging and black discharging pipeline and the length of the slag collecting valve component; the distance between the slag collecting valve component and the slag discharging tank is equal to the sum of the thickness of a flange for a main slag discharging pipeline and the length of the slag collecting valve component; the distance between the slag discharging tank and the slag discharging valve is equal to the sum of the thickness of the flange for the slag discharging branch pipeline and the length of the slag discharging valve.
Preferably, the slag discharging tank is provided with a stamping pipeline, one end of the stamping pipeline is communicated with the slag discharging tank, the other end of the stamping pipeline is communicated with the chilling water pump, and the stamping pipeline is provided with a stamping valve.
Preferably, the slag discharging tank is provided with a flushing water pipeline, and the flushing water pipeline is provided with a flushing water valve.
Preferably, the slag collecting valve assembly comprises a first slag collecting valve and a second slag collecting valve which are arranged in series.
Preferably, a clear water bin and a slag water bin are arranged in the gasification slag dragging machine, and a water drainage pipeline and a slag discharge branch pipeline are respectively communicated with the slag water bin; the slag water bin is deposited for a certain time and then overflows into the clear water bin, and clear water in the clear water bin returns to the system for use.
Preferably, the first black water discharge pipeline is provided with a side drain valve of the washing tower, and the second black water discharge pipeline is provided with a bottom drain valve of the washing tower.
Preferably, a drain regulating valve is arranged on the black water pipeline.
Preferably, a first decompression pipeline and a second decompression pipeline are arranged at the communication part of the black water pipeline and the high-pressure flash tank, and the first decompression pipeline and the second decompression pipeline are respectively the same as the high-pressure flash tank.
Preferably, a first pressure reducing angle valve is arranged on the first pressure reducing pipeline, and a second pressure reducing angle valve is arranged on the second pressure reducing pipeline.
Preferably, a washing tower blowdown and spray guide pipeline is arranged on the black water discharge pipeline II, and the washing tower blowdown and spray guide pipeline is provided with a washing tower blowdown and spray guide valve I and a washing tower blowdown and spray guide valve II which are connected in series.
The utility model discloses a sediment black water discharging system is arranged to gasification scrubbing tower has following advantage:
the utility model has the advantages that the slag discharging tank is arranged at the lower part of the washing tower and is used in the boosting stage of the gasification furnace in the initial starting stage, so that the blockage of the black water discharging pipeline of the washing tower by the ash slag of the system is avoided, and the problem that the black water discharging blockage of the gasification washing tower during starting affects the starting progress is solved;
the utility model is applied to the discharge of the washing tower to the high-pressure flash tank at the initial feeding stage of the coal water slurry gasification furnace;
the invention optimizes the process flow of the system, opens up a new path for solving the problem of black water blockage of the washing tower in the field of coal chemical industry, provides an effective treatment scheme for the industry and points out the transformation direction; due to the optimization of the system flow, the parking economic loss caused by the blockage of the black water discharged by the washing tower can be effectively avoided, and the safety risk of cleaning the pipeline in the emergency repair process can be effectively avoided;
(IV) the utility model discloses an after improving, the flow is reasonable, and convenient operation has solved gasification scrubbing tower driving row black water pipeline and has blockked up the problem, has reduced because of the risk that scrubbing tower row black water pipeline blockked up and causes the failure of driving, the safety risk when having avoided the pipeline to block up the mouth of tearing open and wasing.
The utility model has the characteristics of reasonable in design, simple structure, easily transformation, overall arrangement are compact, easy and simple to handle, a thing is multi-purpose etc, therefore, has fine using value widely.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a slag and black water discharging system of a gasification scrubbing tower.
In the figure: 1. the device comprises a washing tower, 2, a high-pressure flash tank, 3, a slag discharge tank, 4, a gasification slag dragging machine, 5, a first black water discharge pipeline, 6, a slag discharge and black water discharge pipeline, 7, a second black water discharge pipeline, 8, a slag discharge main pipeline, 9, a black water pipeline, 10, a water discharge pipeline, 11, a slag discharge branch pipeline, 12, a water discharge valve, 13, a slag discharge valve, 14, a flushing pipeline, 15, a stamping valve, 16, a flushing water pipeline, 17, a flushing water valve, 18, a first slag collection valve, 19, a second slag collection valve, 20, a clear water bin, 21, a slag water bin, 22, a side water discharge valve of the washing tower, 23, a drainage valve at the bottom of the washing tower, 24, a drainage regulating valve, 25, a first decompression pipeline, 26, a second decompression pipeline, 27, a first decompression angle valve, 28, a second decompression angle valve, 29, a blowdown and drain shower pipeline of the washing tower, 30, a blowdown shower valve of the washing tower, 31 and a blowdown shower valve of the washing tower.
Detailed Description
The slag and black water discharging system of the gasification scrubbing tower of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and for simplification of description. And are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1, the present embodiment provides a slag and black water discharging system for a gasification washing tower, which structurally includes a washing tower 1, a high-pressure flash tank 2, a slag discharging tank 3 and a gasification slag dragging machine 4, wherein a first black water discharging pipeline 5 is installed on a side surface of the washing tower 1, a first slag and black water discharging pipeline 5 is installed at a conical bottom of the washing tower 1, the first slag and black water discharging pipeline 5 includes two paths, which are respectively a second black water discharging pipeline 7 and a main slag discharging pipeline 8, and the first black water discharging pipeline 5 and the second black water discharging pipeline 7 are respectively communicated with the high-pressure flash tank 2 through a black water pipeline 9; the main slag discharging pipeline 8 is communicated with the slag discharging tank 3, and the slag discharging tank 3 is respectively communicated with the gasification slag dragging machine 4 through a water drainage pipeline 10 and a slag discharging branch pipeline 11; a slag collecting valve assembly is arranged on the slag discharging main pipeline 8; a drain valve 12 is installed on the drain pipeline 10; the slag discharge branch pipe 11 is provided with a slag discharge valve 13.
The slag discharging tank 3 in this embodiment is provided with a stamping pipeline 14, one end of the stamping pipeline 14 is communicated with the slag discharging tank 13, the other end of the stamping pipeline 14 is communicated with the chilling water pump, and the stamping pipeline 14 is provided with a stamping valve 15.
The slag discharge tank 3 in this embodiment is provided with a flushing water line 16, and the flushing water line 16 is provided with a flushing water valve 17.
The slag collecting valve assembly in the embodiment comprises a first slag collecting valve 18 and a second slag collecting valve 19 which are arranged in series.
The gasification slag remover in the embodiment is internally provided with a clear water bin 20 and a slag water bin 21, and a water drainage pipeline 10 and a slag discharge branch pipeline 11 are respectively communicated with the slag water bin 21; the slag water bin 21 overflows into the clear water bin 20 after being precipitated for a certain time, and clear water in the clear water bin 20 returns to the system for use.
In this embodiment, a side drain valve 22 of the washing tower is installed on the first black water discharge pipeline 5, and a bottom drain valve 23 of the washing tower is installed on the second black water discharge pipeline 7.
The black water line 9 in this embodiment is provided with a drain regulating valve 24.
In the present embodiment, a first decompression pipeline 25 and a second decompression pipeline 26 are installed at the communication position of the black water pipeline 9 and the high-pressure flash tank 2, and the first decompression pipeline 25 and the second decompression pipeline 26 are respectively the same as the high-pressure flash tank 2. The first pressure reducing pipeline 25 is provided with a first pressure reducing angle valve 27, and the second pressure reducing pipeline 26 is provided with a second pressure reducing angle valve 28.
The second black water discharging pipeline 7 in this embodiment is provided with a washing tower blowdown and shower guiding pipeline 29, and the washing tower blowdown and shower guiding pipeline 29 is provided with a first washing tower blowdown and shower valve 30 and a second washing tower blowdown and shower valve 31 which are serially connected.
The working process of the embodiment is specifically as follows:
before the gasification furnace is started to feed, the blowdown and sprinkling pipeline 29 of the washing tower is closed, the drain valve 23 at the bottom of the washing tower is closed, the drain valve 22 at the side surface of the washing tower is closed, the first slag collecting valve 18 is opened, the second slag collecting valve 19 is opened, the slag discharging valve 13 is closed, the stamping valve 15 is closed, the flushing water valve 17 is closed, and the drain valve 12 is closed. 3min after feeding, the system pressure is less than or equal to 1.0mpa, the first slag collecting valve 18 is closed, the second slag collecting valve 19 is closed, the water drain valve 12 is opened to release pressure, the flushing water valve 17 is opened after the pressure of the slag discharging tank 3 is released to normal pressure, the slag discharging valve 13 is opened, and accumulated slag collected in the slag discharging tank 3 is discharged. Then closing the slag discharging valve 13, closing the water drain valve 12, closing the flushing water valve 17, opening the stamping valve 15, closing the stamping valve 15 after the difference value between the pressure of the slag discharging tank 3 and the pressure of the washing tower 1 is smaller than a set value, opening the first slag receiving valve 18, opening the second slag receiving valve 19, restarting slag receiving, discharging slag again after slag receiving, wherein the slag receiving and discharging process can be carried out for a plurality of times when the system pressure is less than or equal to 1.0 mpa;
after the slag is finally discharged from the slag discharge tank 3, the first slag collecting valve 18 is closed, the second slag collecting valve 19 is closed, the drain valve 23 at the bottom of the washing tower is opened, the drain regulating valve 24 is opened, the first pressure reducing angle valve 27 is opened, the second pressure reducing angle valve 28 is opened, and the black water in the washing tower 1 is discharged into the high-pressure flash tank 2.
The improvement is made on the basis of the prior process system, and the specific working process is as follows: after the car is started and the materials are fed, the washing tower 1 circularly receives and discharges the slag through the slag collecting valve I18, the slag collecting valve II 19, the slag discharging tank 3, the slag discharging valve 13, the stamping valve 15, the flushing water valve 17 and the water drain valve 12, removes the ash in the system and prevents the drainage pipeline of the washing tower from being blocked.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A slag and black water discharging system of a gasification washing tower is characterized by comprising a washing tower, a high-pressure flash tank, a slag discharging tank and a gasification slag dragging machine, wherein a first black water discharging pipeline is arranged on the side surface of the washing tower, a second slag and black water discharging pipeline is arranged at the bottom of a cone of the washing tower, the first slag and black water discharging pipeline comprises two paths which are respectively a second black water discharging pipeline and a main slag discharging pipeline, and the first black water discharging pipeline and the second black water discharging pipeline are respectively communicated with the high-pressure flash tank through black water pipelines;
the main slag discharging pipeline is communicated with a slag discharging tank, and the slag discharging tank is communicated with the gasification slag conveyor through a water drainage pipeline and a slag discharging branch pipeline respectively; a slag collecting valve assembly is arranged on the slag discharging main pipe line; a water drain valve is arranged on the water drain pipeline; a slag discharging valve is arranged on the slag discharging branch pipe line.
2. The slag and black water discharging system of claim 1, wherein the slag discharging tank is provided with a punching pipeline, and the punching pipeline is provided with a punching valve.
3. The slag and black water discharging system of claim 1, wherein the slag discharging tank is provided with a flushing water line, and the flushing water line is provided with a flushing water valve.
4. The slag and black water discharging system of claim 1, wherein the slag valve assembly comprises a first slag valve and a second slag valve connected in series.
5. The slag and black water discharging system of claim 1, wherein a clear water bin and a slag water bin are disposed in the gasification slag remover, and the drain line and the slag branch line are respectively communicated with the slag water bin.
6. The slagging and black water discharging system of claim 1, wherein the first black water discharging pipeline is provided with a side drain valve of the washing tower, and the second black water discharging pipeline is provided with a bottom drain valve of the washing tower.
7. The slagging and draining system of a gasification scrubbing tower according to claim 1, wherein a drain regulating valve is provided on the black water line.
8. The slagging and black water discharging system of a gasification washing tower as claimed in claim 1, wherein a first decompression pipeline and a second decompression pipeline are arranged at the communication part of the black water pipeline and the high-pressure flash tank, and the first decompression pipeline and the second decompression pipeline are respectively the same as the high-pressure flash tank.
9. The slagging and black water discharging system of gasification scrubbing tower according to claim 8, wherein the first pressure reducing pipe is provided with a first pressure reducing angle valve, and the second pressure reducing pipe is provided with a second pressure reducing angle valve.
10. The slagging and black water discharging system of gasification washing tower according to claim 1, wherein the black water discharging pipeline II is provided with a washing tower blowdown and shower guiding pipeline, and the washing tower blowdown and shower guiding pipeline is provided with a washing tower blowdown and shower valve I and a washing tower blowdown and shower valve II which are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222795295.9U CN218579894U (en) | 2022-10-24 | 2022-10-24 | Slag discharging and black water discharging system of gasification washing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222795295.9U CN218579894U (en) | 2022-10-24 | 2022-10-24 | Slag discharging and black water discharging system of gasification washing tower |
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| CN218579894U true CN218579894U (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222795295.9U Active CN218579894U (en) | 2022-10-24 | 2022-10-24 | Slag discharging and black water discharging system of gasification washing tower |
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| CN (1) | CN218579894U (en) |
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- 2022-10-24 CN CN202222795295.9U patent/CN218579894U/en active Active
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