CN212864447U - Water purification system of coal water slurry gasification device - Google Patents
Water purification system of coal water slurry gasification device Download PDFInfo
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- CN212864447U CN212864447U CN202021226538.1U CN202021226538U CN212864447U CN 212864447 U CN212864447 U CN 212864447U CN 202021226538 U CN202021226538 U CN 202021226538U CN 212864447 U CN212864447 U CN 212864447U
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Abstract
The utility model provides a water purification system of coal slurry gasification equipment, including gasifier, scrubbing tower circulating pump, oxygen-eliminating device, middling pressure flash tank, vacuum flash tank, black water pump, first knockout drum, second knockout drum, grey basin, subsider, pressure filter, high pressure grey water pump and low pressure grey water pump, the first export and the high pressure grey water pump intercommunication in grey basin, the export and the scrubbing tower intercommunication of high pressure grey water pump, the second export and the low pressure grey water pump intercommunication in grey basin, first export and the second exit in grey basin are provided with antisludging agent and add the device. According to the utility model discloses a water purification system's design and antisludging agent add device's setting etc. can be so that water purification system moves steadily.
Description
Technical Field
The utility model relates to a water purification system especially relates to a water coal slurry gasification equipment's water purification system.
Background
Coal water slurry boilers have been widely used, in which coal water slurry is pressurized and gasified and then injected into a boiler burner. In the existing coal water slurry boiler gasification device, the principle of energy conservation, emission reduction and comprehensive utilization is not met, so that the scheme optimization is needed in the design process.
The problems of pipeline blockage at the inlet of a high-pressure water coal slurry pump, scaling of a chilling ring, scaling of a black water pipeline and the like frequently occur in the conventional coal water slurry boiler gasification device, and the maintenance frequency and the operation failure rate of a coal water slurry boiler system are increased.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the technical problems, the utility model provides a water purification system of a coal water slurry gasification device.
According to one aspect of the utility model, the water purification system of the water-coal-slurry gasification device comprises a gasification furnace, a washing tower circulating pump, a deaerator, a medium-pressure flash tank, a vacuum flash tank, a black water pump, a first separation tank, a second separation tank, an ash water tank, a settling tank, a filter press, a high-pressure ash water pump and a low-pressure ash water pump;
the gasification outlet of the gasification furnace is communicated with the washing tower, the deaerator is communicated with the washing tower so as to introduce process water containing condensate and desalted water into the washing tower, the washing tower is communicated with the gasification furnace through the washing tower circulating pump so as to supply the process water to a chilling ring of the gasification furnace, and a water outlet of the gasification furnace and a water outlet of the washing tower are communicated with the medium-pressure flash tank so as to introduce black water in the gasification furnace and the washing tower into the medium-pressure flash tank;
a black water outlet of the medium-pressure flash tank is communicated with the vacuum flash tank, a black water outlet of the vacuum flash tank is communicated with a black water pump, and an outlet of the black water pump is communicated with the settling tank, so that the black water treated by the medium-pressure flash tank and the vacuum flash tank enters the settling tank;
the steam outlet of the medium-pressure flash tank is communicated with a first separation tank through a first heat exchanger, the steam outlet of the vacuum flash tank is communicated with a second separation tank through a second heat exchanger, outlets of the first separation tank and the second separation tank are communicated with a settling tank feed pump, and an outlet of the settling tank feed pump is communicated with the settling tank and the grey water tank, so that the treated black water of the first separation tank and the second separation tank enters the settling tank and the grey water tank; and
the first outlet of the grey water tank is communicated with the high-pressure grey water pump, the outlet of the high-pressure grey water pump is communicated with the scrubbing tower so that grey water enters the scrubbing tower, and the second outlet of the grey water tank is communicated with the low-pressure grey water pump so that the grey water is discharged.
According to at least one embodiment of the present invention, the outlet of the settling tank is in communication with a filter press.
According to at least one embodiment of the present invention, the first outlet of the grey water tank is provided with a scale inhibitor adding device.
According to at least one embodiment of the utility model, the grey water after the scale inhibitor scale removal gets into high-pressure grey water pump.
According to the utility model discloses an at least one embodiment the subsider with black water pump exit linkage's position department is equipped with the flocculating agent and adds the device.
According to at least one embodiment of the present invention, the top of the gasification furnace is provided with an inlet for cooling water and oxygen.
According to at least one embodiment of the invention, the deaerator is provided with an inlet for condensate and desalinated water.
According to at least one embodiment of the present invention, the second outlet of the grey water tank is provided with a scale inhibitor adding device.
According to at least one embodiment of the utility model, the grey water after the scale inhibitor scale removal gets into low pressure grey water pump.
According to the utility model discloses a water purification system of coal slurry gasification equipment has optimized the system scale deposit to can guarantee the long-term steady operation of system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 shows a schematic diagram of a water purification system of a coal water slurry gasification apparatus according to an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a water purification system of a coal water slurry gasification apparatus according to an embodiment of the present invention.
1 gasification furnace
2 washing tower
3 circulating pump of washing tower
4 deaerator
5 medium pressure flash tank
6 first heat exchanger
7 vacuum flash tank
8 second heat exchanger
9 second separation tank
10 first separation tank
11 black water pump
12 settling tank feeding pump
13 Grey water tank
14 high-pressure ash water pump
15 low pressure grey water pump
16 settling tank
17 antisludging agent adds device
18 flocculant adding device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention. It should be noted that, for convenience of description, only the parts related to the present invention are shown in the drawings.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict. The technical solution of the present invention will be described in detail with reference to the accompanying drawings and embodiments.
Unless otherwise indicated, the illustrated exemplary embodiments/examples will be understood as providing exemplary features of various details of some ways in which the technical concepts of the present invention may be practiced. Thus, unless otherwise indicated, the features of the various embodiments/examples may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present invention.
The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.
When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.
For descriptive purposes, the invention may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" lateral (e.g., as in "a sidewall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.
Fig. 1 shows a water purification system of a coal water slurry gasification apparatus according to an embodiment of the present invention.
As shown in fig. 1, the water purification system of the coal water slurry gasification apparatus includes: the system comprises a gasification furnace 1, a washing tower 2, a washing tower circulating pump 3, a deaerator 4, a medium-pressure flash tank 5, a vacuum flash tank 7, a black water pump 11, a first separation tank 10, a second separation tank 9, an ash water tank 13, a settling tank 16, a filter press, a high-pressure ash water pump 14 and a low-pressure ash water pump 15.
The gasification outlet of the gasification furnace 1 communicates with the washing tower 2, and the gasification furnace 1 is supplied with cooling water and oxygen.
The washing column 2 is also in communication with a deaerator 4 for introducing process water comprising condensate, desalted water, into the washing column 2. The scrubber 2 can additionally be connected to the gasifier 1 via a scrubber circulation pump 3 for feeding process water into the quench ring of the gasifier 1.
The water outlet of the gasification furnace 1 and the water outlet of the washing tower 2 are communicated with the medium-pressure flash tank 5, so that black water in the gasification furnace 1 and the washing tower 2 is introduced into the medium-pressure flash tank 5.
The black water outlet of the medium-pressure flash tank 5 is communicated with the vacuum flash tank 7, and the steam outlet of the medium-pressure flash tank 5 is communicated with the first separation tank 10 through the first heat exchanger 6.
The black water outlet of the vacuum flash tank 7 is communicated with the inlet of the black water pump 11, and the outlet of the black water pump 11 is communicated with the settling tank 16, so that the black water treated by the medium-pressure flash tank 5 and the vacuum flash tank 7 is pumped into the settling tank 16.
The vapor outlet of the vacuum flash tank 7 communicates with a second separation tank 9 via a second heat exchanger 8.
The outlet of the first separation tank 10 and the outlet of the second separation tank 9 are communicated with the inlet of a settling tank feed pump 12, and the outlet of the settling tank feed pump 12 is communicated with a settling tank 16 and a grey water tank 13, so that the treated black water of the first separation tank 10 and the second separation tank 9 is pumped into the settling tank 16 and the grey water tank 13.
A first outlet of the grey water tank 13 is in communication with a high pressure grey water pump 14, an outlet of the high pressure grey water pump 14 is in communication with the scrubber tower 2 for pumping grey water into the scrubber tower 2, and a second outlet of the grey water tank 13 is in communication with a low pressure grey water pump 15 for discharging grey water.
Furthermore, although not shown in the figures, the outlet of the settling tank 16 may be in communication with a filter press.
Fig. 2 shows a water purification system of a coal water slurry gasification apparatus according to another embodiment of the present invention.
As shown in fig. 2, the water purification system of the coal water slurry gasification apparatus includes: the system comprises a gasification furnace 1, a washing tower 2, a washing tower circulating pump 3, a deaerator 4, a medium-pressure flash tank 5, a vacuum flash tank 7, a black water pump 11, a first separation tank 10, a second separation tank 9, an ash water tank 13, a settling tank 16, a filter press, a high-pressure ash water pump 14 and a low-pressure ash water pump 15.
The gasification outlet of the gasification furnace 1 communicates with the washing tower 2, and the gasification furnace 1 is supplied with cooling water and oxygen.
The washing column 2 is also in communication with a deaerator 4 for introducing process water comprising condensate, desalted water, into the washing column 2. The scrubber 2 can additionally be connected to the gasifier 1 via a scrubber circulation pump 3 for feeding process water into the quench ring of the gasifier 1.
The water outlet of the gasification furnace 1 and the water outlet of the washing tower 2 are communicated with the medium-pressure flash tank 5, so that black water in the gasification furnace 1 and the washing tower 2 is introduced into the medium-pressure flash tank 5.
The black water outlet of the medium-pressure flash tank 5 is communicated with the vacuum flash tank 7, and the steam outlet of the medium-pressure flash tank 5 is communicated with the first separation tank 10 through the first heat exchanger 6.
The black water outlet of the vacuum flash tank 7 is communicated with the inlet of the black water pump 11, and the outlet of the black water pump 11 is communicated with the settling tank 16, so that the black water treated by the medium-pressure flash tank 5 and the vacuum flash tank 7 is pumped into the settling tank 16.
The vapor outlet of the vacuum flash tank 7 communicates with a second separation tank 9 via a second heat exchanger 8.
The outlet of the first separation tank 10 and the outlet of the second separation tank 9 are communicated with the inlet of a settling tank feed pump 12, and the outlet of the settling tank feed pump 12 is communicated with a settling tank 16 and a grey water tank 13, so that the treated black water of the first separation tank 10 and the second separation tank 9 is pumped into the settling tank 16 and the grey water tank 13.
A first outlet of the grey water tank 13 is in communication with a high pressure grey water pump 14, an outlet of the high pressure grey water pump 14 is in communication with the scrubber tower 2 for pumping grey water into the scrubber tower 2, and a second outlet of the grey water tank 13 is in communication with a low pressure grey water pump 15 for discharging grey water.
Furthermore, although not shown in the figures, the outlet of the settling tank 16 may be in communication with a filter press.
In particular, as shown in fig. 2, an antisludging agent adding device 17 may be provided at the first outlet of the grey water tank 13 so as to add an antisludging agent, so that the grey water passing through the antisludging agent may enter the high pressure grey water pump 14 and then enter the scrubber 2. In addition, a scale inhibitor adding device may be disposed at the second outlet of the grey water tank 13 so as to add a scale inhibitor, so that the grey water passing through the scale inhibitor may enter the low pressure grey water pump 15 and then be discharged. The utility model discloses in, preferably, add the dress through the antisludging agent and add high temperature resistant antisludging agent, through adding the antisludging agent in the position of setting for, can prevent entire system's scale deposit effectively to can guarantee the long-term steady operation of system.
Further, a flocculant adding device 18 may be provided at a position where the settling tank 16 is connected to the outlet of the black water pump 11, so that a flocculant can be added by the flocculant adding device 18 during use.
In a further embodiment of the present invention, the inlet for cooling water and the oxygen inlet are provided at the top of the gasification furnace 1.
According to a further embodiment of the invention, an access for condensate and desalinated water is provided at the top of the deaerator 4.
Through the utility model discloses a water purification system's structural design, then through the setting of antisludging agent interpolation device, can prevent the scale deposit of water system effectively through adding the antisludging agent in this kind of system like this, ensure the long period safety and stability operation of coal slurry gasification equipment.
In the using process, the transformation condensate and desalted water returned by the system are deoxidized by the deaerator and then enter the washing tower as washing water and make-up water. And pumping the process water in the washing tower to a chilling ring of the gasification furnace through a circulating pump of the washing tower so as to keep the liquid level of the chilling chamber.
After the black water produced by the gasification furnace and the washing tower enters the settling tank for flocculation and settlement after secondary flash evaporation, the supernatant overflows to the grey water tank, part of grey water returns to the washing tower through a high-pressure grey water pump, and the rest of the grey water is pumped to the outside of a boundary area through a low-pressure grey water pump for wastewater treatment. This can reduce the pressure on external treatment, for example, reduce environmental pollution, and achieve partial recycling.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are provided for clarity of description only, and are not intended to limit the scope of the invention. Other variations or modifications to the above described embodiments will be apparent to those skilled in the art and are within the scope of the invention.
Claims (10)
1. A water purification system of a coal water slurry gasification device is characterized in that: the system comprises a gasification furnace, a washing tower circulating pump, a deaerator, a medium-pressure flash tank, a vacuum flash tank, a black water pump, a first separation tank, a second separation tank, an ash water tank, a settling tank, a filter press, a high-pressure ash water pump and a low-pressure ash water pump;
the gasification outlet of the gasification furnace is communicated with the washing tower, the deaerator is communicated with the washing tower so as to introduce process water containing condensate and desalted water into the washing tower, the washing tower is communicated with the gasification furnace through the washing tower circulating pump so as to supply the process water to a chilling ring of the gasification furnace, and a water outlet of the gasification furnace and a water outlet of the washing tower are communicated with the medium-pressure flash tank so as to introduce black water in the gasification furnace and the washing tower into the medium-pressure flash tank;
a black water outlet of the medium-pressure flash tank is communicated with the vacuum flash tank, a black water outlet of the vacuum flash tank is communicated with a black water pump, and an outlet of the black water pump is communicated with the settling tank, so that the black water treated by the medium-pressure flash tank and the vacuum flash tank enters the settling tank;
the steam outlet of the medium-pressure flash tank is communicated with a first separation tank through a first heat exchanger, the steam outlet of the vacuum flash tank is communicated with a second separation tank through a second heat exchanger, outlets of the first separation tank and the second separation tank are communicated with a settling tank feed pump, and an outlet of the settling tank feed pump is communicated with the settling tank and the grey water tank, so that the treated black water of the first separation tank and the second separation tank enters the settling tank and the grey water tank; and
the first outlet of the grey water tank is communicated with the high-pressure grey water pump, the outlet of the high-pressure grey water pump is communicated with the scrubbing tower so that grey water enters the scrubbing tower, and the second outlet of the grey water tank is communicated with the low-pressure grey water pump so that the grey water is discharged.
2. The water purification system of the water-coal-slurry gasification apparatus according to claim 1, wherein: and the outlet of the settling tank is communicated with a filter press.
3. The water purification system of the coal-water slurry gasification apparatus according to claim 1 or 2, wherein: and a scale inhibitor adding device is arranged at the first outlet of the ash water tank.
4. The water purification system of the water-coal-slurry gasification apparatus according to claim 3, wherein: and the grey water after scale removal by the scale inhibitor enters the high-pressure grey water pump.
5. The water purification system of the coal-water slurry gasification apparatus according to claim 1 or 2, wherein: and a flocculating agent adding device is arranged at the position where the settling tank is connected with the outlet of the black water pump.
6. The water purification system of the coal-water slurry gasification apparatus according to claim 1 or 2, wherein: the top of the gasification furnace is provided with a through inlet for cooling water and oxygen.
7. The water purification system of the coal-water slurry gasification apparatus according to claim 1 or 2, wherein: the deaerator is provided with a communicating port for condensate and desalted water.
8. The water purification system of the coal-water slurry gasification apparatus according to claim 1 or 2, wherein: and a scale inhibitor adding device is arranged at the second outlet of the ash water tank.
9. The water purification system of the water-coal-slurry gasification apparatus according to claim 8, wherein: and the grey water after scale removal by the scale inhibitor enters the low-pressure grey water pump.
10. The water purification system of the water-coal-slurry gasification apparatus according to claim 3, wherein: and a scale inhibitor adding device is arranged at the second outlet of the ash water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226538.1U CN212864447U (en) | 2020-06-29 | 2020-06-29 | Water purification system of coal water slurry gasification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226538.1U CN212864447U (en) | 2020-06-29 | 2020-06-29 | Water purification system of coal water slurry gasification device |
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| Publication Number | Publication Date |
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| CN212864447U true CN212864447U (en) | 2021-04-02 |
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| CN202021226538.1U Active CN212864447U (en) | 2020-06-29 | 2020-06-29 | Water purification system of coal water slurry gasification device |
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