CN215742684U - Dust removal washing tower for saturated raw gas - Google Patents
Dust removal washing tower for saturated raw gas Download PDFInfo
- Publication number
- CN215742684U CN215742684U CN202122289662.3U CN202122289662U CN215742684U CN 215742684 U CN215742684 U CN 215742684U CN 202122289662 U CN202122289662 U CN 202122289662U CN 215742684 U CN215742684 U CN 215742684U
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- China
- Prior art keywords
- dust removal
- gas
- air inlet
- demister
- removal barrel
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- 239000000428 dust Substances 0.000 title claims abstract description 81
- 238000005406 washing Methods 0.000 title claims abstract description 32
- 229920006395 saturated elastomer Polymers 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000009826 distribution Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 230000003020 moisturizing effect Effects 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000005201 scrubbing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 7
- 239000003245 coal Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000003034 coal gas Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- Separation Of Particles Using Liquids (AREA)
Abstract
The utility model discloses a dust removal washing tower for saturated raw gas, belongs to the field of coal chemical industry dust removal equipment, and is mainly used for washing dust-containing particles in the saturated raw gas in the coal chemical industry production process. The device is including the dust removal barrel, the air inlet, the gas outlet, the moisturizing mouth, the leakage fluid dram, gas distribution pipe, the silk screen demister, the gas outlet sets up in dust removal barrel top, the air inlet, the moisturizing mouth all sets up in dust removal barrel lateral wall upper portion, the air inlet is located the moisturizing mouth top, the leakage fluid dram sets up in dust removal barrel lateral wall lower part, lower part forms the water bath through moisturizing mouth injected water messenger in the dust removal barrel regional, the air inlet is connected to gas distribution pipe upper end, the lower extreme stretches into the water bath regional, the silk screen demister that sets up upper portion in the dust removal barrel is located the air inlet top, the water bath is equipped with the vortex-proof baffle in the region. The utility model makes the dust-containing crude gas enter the water bath to wash off dust-containing particles, and the washed gas changes the flow direction and further removes dust and liquid from bottom to top and is sent out through the gas outlet.
Description
Technical Field
The utility model belongs to the field of coal chemical industry dust removal equipment, and particularly relates to a saturated coarse coal gas dust removal washing tower which is applied to dust removal and liquid removal of coarse coal gas in a production process.
Background
In the current coal chemical production process, a coal gasification working section mainly produces a large amount of crude coal gas, and the solid content of saturated crude coal gas entering a conversion device in the crude coal gas conversion process is less than or equal to 20mg/Nm3Along with the continuous operation of production, solid fly ash in the crude gas is continuously accumulated in the conversion device, a wire mesh demister in the original gas-liquid separator equipment is partially blocked, the resistance of the device is gradually increased, the energy consumption of the system is continuously increased, and the operation cost is continuously increased. When serious coal ash is brought into the conversion device, the resistance at the inlet of the gas-liquid separator can rise rapidly, and a gas-gas heat exchanger in front of a conversion furnace is blocked, so that the normal operation of the device is influenced. In the long term, when the coal ash is attached to the surface of the shift catalyst, the contact surface area of the catalyst is reduced, the activity is reduced, the service life is shortened, and in the severe case, the catalyst can be agglomerated, the normal operation of the shift device is influenced, and the internal parts of the shift furnace equipment are seriously influenced.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a saturated raw gas dedusting and washing tower for effectively removing dust-containing particles in the saturated raw gas.
In order to achieve the above purpose of the present invention, the following scheme is adopted:
the utility model provides a saturated coarse coal gas dust removal scrubbing tower, including the dust removal barrel, the air inlet, the gas outlet, the moisturizing mouth, the leakage fluid dram, the gas distribution pipe, the silk screen demister, the gas outlet sets up in dust removal barrel top, the air inlet, the moisturizing mouth all sets up in dust removal barrel lateral wall upper portion, the air inlet is located the moisturizing mouth top, the leakage fluid dram sets up in dust removal barrel lateral wall lower part, it is regional to form the water bath through moisturizing mouth injected water messenger dust removal barrel inner lower part, the air inlet is connected to gas distribution pipe upper end, the lower extreme stretches into the water bath dust removal region, the silk screen demister who sets up upper portion in the dust removal barrel is located the air inlet top, the water bath dust removal region is equipped with the vortex-proof baffle.
Further, in a preferred embodiment of the present invention, the depth of the gas distribution pipe inserted into the water bath dust removal area is 50 to 100 mm.
Preferably, the gas distribution pipe is the reducer pipe, and gas distribution pipe axis and dust removal barrel axis collineation.
Further, in a preferred embodiment of the present invention, a vortex breaker is disposed at the bottom inside the dust removing cylinder, and the vortex breaker is located right below the gas distribution pipe.
Further, in a preferred embodiment of the present invention, a cyclone plate type demister is further disposed in the middle of the interior of the dust removal cylinder, the cyclone plate type demister is located between the air inlet and the water replenishing port, the center of the cyclone plate type demister is fixed to the outer wall of the gas distribution pipe, the bottom of the cyclone plate type demister is fixed to an annular support plate, and the annular support plate is welded to the inner wall of the dust removal cylinder.
Preferably, the cyclone plate type demister is an outward cyclone plate type demister or an inward cyclone plate type demister.
Further, in a preferred embodiment of the present invention, a self-cleaning spray head device is further disposed at an upper portion in the dust removing cylinder, and the self-cleaning spray head device is located above the wire mesh demister.
Further, in a preferred embodiment of the utility model, the liquid outlet is communicated with the bottom of the dust removal cylinder body through a pipeline provided with a long-radius elbow.
Preferably, the long radius elbow is a 3D elbow.
Further, in a preferred embodiment of the present invention, the vortex-preventing baffle is a plurality of rectangular plates, and is uniformly distributed in the dust-removing cylinder in the radial direction, and the inner side edge of the vortex-preventing baffle is fixed to the gas distribution pipe.
Preferably, the vortex breaker is 3-5 rectangular plates.
Further, in a preferred embodiment of the present invention, an overflow pipe is further disposed in the dust removing cylinder, an upper end of the overflow pipe penetrates through the annular support sheet, an outer wall of the overflow pipe is fixedly connected with the annular support sheet, and a lower end of the overflow pipe is inserted into a lower portion of the water bath dust removing area.
Compared with the prior art, the utility model has the beneficial technical effects that: the dust removal washing tower for the saturated raw gas is mainly used for washing dust-containing particles in the saturated raw gas in the coal chemical production process, the dust-containing raw gas enters a water bath washing area from a gas inlet through a gas distribution pipe for washing, a vortex-proof baffle is arranged in the water bath washing area to prevent vortex from being formed, the dust-containing particles enter a water bath along with gas flow to be washed, the washed gas changes the flow direction from bottom to top, further removes dust and liquid through a cyclone plate type demister and a wire mesh demister, and then is sent out through a gas outlet; the utility model has the advantages of unique structure, scientific design, convenient dust removal, capability of cleaning equipment internals on line, low investment, good dust removal effect, economy and practicality.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a cyclone plate demister of the present invention;
FIG. 3 is a schematic view of a self-cleaning showerhead apparatus of the present invention;
FIG. 4 is a schematic view of the vortex breaker of the present invention;
reference numerals: the device comprises a dust removal barrel 1, a dust removal barrel 2, a gas inlet 3, a gas distribution pipe 4, a water bath dust removal area, a vortex-proof baffle 5, a cyclone plate type demister 6, a silk screen demister 7, a self-cleaning spray head device 8, a water replenishing opening 9, a liquid discharge opening 10, a gas outlet 11, an overflow pipe 12, a vortex breaker 13, a long-radius elbow 14 and an annular supporting sheet 15.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Examples
Referring to fig. 1-4, the saturated raw gas dedusting and washing tower provided in this embodiment includes a dedusting cylinder 1, an air inlet 2, an air outlet 11, a water replenishing port 9, a liquid discharge port 10, a gas distribution pipe 3, and a wire mesh demister 7, where the air outlet 11 is disposed at the top of the dedusting cylinder 1, the air inlet 2 and the water replenishing port 9 are both disposed at the upper portion of the sidewall of the dedusting cylinder 1, the air inlet 2 is located above the water replenishing port 9, the liquid discharge port 10 is disposed at the lower portion of the sidewall of the dedusting cylinder 1, water is injected through the water replenishing port 9 to form a water-bath dedusting area 4 at the lower portion of the dedusting cylinder 1, the upper end of the gas distribution pipe 3 is connected to the air inlet 2, the lower end of the gas distribution pipe extends into the water-bath dedusting area 4, the wire mesh demister 7 disposed at the upper portion of the dedusting cylinder 1 is located above the air inlet 2, and the water-bath dedusting area 4 is provided with an anti-vortex baffle 5; the depth of the gas distribution pipe 3 inserted into the water bath dedusting area 4 is 50-100 mm, the gas distribution pipe 3 is a reducer pipe, the central axis of the reducer pipe is collinear with the central axis of the dedusting cylinder 1, a vortex breaker 13 is arranged at the bottom in the dedusting cylinder 1, the vortex breaker 13 is positioned under the gas distribution pipe 3, a cyclone plate type demister 6 is further arranged at the middle in the dedusting cylinder 1, the cyclone plate type demister 6 is positioned between the gas inlet 2 and the water replenishing port 9, the center of the cyclone plate type demister 6 is fixed with the outer wall of the gas distribution pipe 3, the bottom of the cyclone plate type demister is fixed on an annular supporting sheet 15, and the annular supporting sheet 15 is welded with the inner wall of the dedusting cylinder 1; the upper part in the dust removing cylinder 1 is also provided with a self-cleaning spray head device 8, and the self-cleaning spray head device 8 is positioned above the silk screen demister 7; the liquid outlet 10 is communicated with the bottom of the dust removal cylinder body 1 through a pipeline provided with a long-radius elbow 14; vortex-proof baffle 5 is a plurality of rectangular plates, according to radial evenly distributed in dust removal barrel 1, and the side is fixed with gas distribution pipe 3 in vortex-proof baffle 5, still be equipped with overflow pipe 12 in the dust removal barrel 1, annular backing sheet 15 is run through to 12 upper ends of overflow pipe, and its outer wall and annular backing sheet 15 fixed connection, and 4 lower parts in the water bath dust removal region are inserted to 12 lower extremes of overflow pipe.
In this embodiment, the cyclone plate type demister 6 can be an outward cyclone plate type demister 6 on the left side in fig. 2 or an inward cyclone plate type demister 6 on the right side in fig. 2; 3, 4 or 5 rectangular plates in the figure 4 can be selected as the vortex-preventing baffle 5, and the rectangular plates radially form a regular three-deformation shape, a regular quadrangle shape or a regular pentagon shape in the dust removal cylinder body 1; the self-cleaning spray head device 8 comprises a main pipe connected with an external water source and a plurality of branch pipes arranged on the main pipe, spray heads are uniformly distributed on the branch pipes, and the main pipe and the branch pipes are horizontally arranged; the vortex-proof baffle 5 is provided with special distribution holes for adjusting the gas flow direction, preventing the generation of vortex during water bath dust removal and ensuring the stability of the liquid level of water bath washing.
The saturated coarse coal gas dedusting washing tower is used for saturated coarse coal gas with high water vapor content, and is suitable for high-pressure and high-temperature saturated coarse coal gas with the solid content of less than or equal to 20mg/Nm3And (5) working conditions. The long-radius elbow 14 is beneficial to discharging of washing liquid containing ash and particles, a 3D elbow is preferred, and the depth of the gas distribution pipe 3 inserted into the water bath dedusting area 4 is preferably 50 mm; in order to make the raw gas fully contact with the washing water when entering the water bath of the washing tower and prevent the washing water from bubbling and splashing due to the too high gas velocity, the flow velocity of the raw gas in the gas distribution pipe 3 is preferably 5-8 m/s, and preferably 5 m/s.
In the embodiment, the crude gas enters the gas distribution pipe 3 through the gas inlet 2, the gas is reduced to the optimal flow velocity, the crude gas enters the water bath dust removal area 4 from top to bottom through the gas distribution pipe 3 for washing, and the washed gas is further dedusted and liquid removed through the cyclone plate type demister 6 and the wire mesh demister 7 from bottom to top in sequence and then is discharged through the gas outlet 11.
The cleaning solution in the water bath dust removal area 4 and the self-cleaning spray head device 8 comes from continuous boiler blowdown water in a conversion furnace steam drum matched in the process flow, the cleaning solution is flashed into a saturated state of crude gas after entering a washing tower, the temperature and the water-gas ratio of the crude gas cannot be influenced, the self-cleaning spray head device 8 can clean the silk screen demister 7 and the cyclone plate demister 6 on line, liquid drops separated by the silk screen demister 7 and the cyclone plate demister 6 automatically flow into a liquid phase at the bottom of the washing tower through the overflow pipe 12, and the overflow pipe 12 is inserted into a liquid phase space at the bottom of the washing tower to prevent gas phase short circuit.
Taking 30 ten thousand tons of synthetic ammonia project produced in a certain year as an example, the raw gas sent to the conversion is 17 ten thousand Nm3H, the solid content in the crude gas is less than or equal to 20mg/Nm3The solid content of the crude gas after dust removal is less than or equal to 5mg/Nm3Therefore, dust removal and washing of saturated raw gasThe dust removal amount of the scrubbing tower is 2.55kg/h, the annual dust removal amount is 18.36t after 7200 hours of annual operation, the influence of solid smoke dust on subsequent devices is extremely serious, and the continuously accumulated smoke dust causes solid particles to be brought into subsequent devices, so that the resistance of the devices is increased, the service life of the catalyst is reduced, and the long-term stable operation of the conversion device is influenced. When the resistance drop of the equipment is increased, continuous boiler blow-down water of a steam pocket in the conversion device is introduced into a self-cleaning spray head device 8 on line and used for cleaning a silk screen demister 7 and a cyclone plate type demister 6, and the cleaned sewage is sent to the position below the liquid level at the bottom of the dust removal barrel body 1 through an overflow pipe 12 and is discharged through a liquid outlet 10.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a saturated raw gas dust removal scrubbing tower, includes dust removal barrel (1), air inlet (2), gas outlet (11), moisturizing mouth (9), leakage fluid dram (10), gas distribution pipe (3), silk screen demister (7), its characterized in that: gas outlet (11) set up in dust removal barrel (1) top, air inlet (2), water supply port (9) all set up in dust removal barrel (1) lateral wall upper portion, air inlet (2) are located water supply port (9) top, leakage fluid dram (10) set up in dust removal barrel (1) lateral wall lower part, lower part forms water bath dust removal region (4) in making dust removal barrel (1) through water supply port (9) injected water, air inlet (2) are connected to gas distribution pipe (3) upper end, the lower extreme stretches into water bath dust removal region (4), silk screen demister (7) that set up upper portion in dust removal barrel (1) are located air inlet (2) top, water bath dust removal region (4) are equipped with vortex-proof baffle (5).
2. The saturated raw gas dedusting washing tower as recited in claim 1, wherein: the depth of the gas distribution pipe (3) inserted into the water bath dedusting area (4) is 50-100 mm.
3. The saturated raw gas dedusting washing tower as recited in claim 1, wherein: the gas distribution pipe (3) is a reducer pipe, and the central axis of the gas distribution pipe (3) is collinear with the central axis of the dust removal cylinder body (1).
4. The saturated raw gas dedusting washing tower as recited in claim 3, wherein: the bottom is equipped with broken vortex ware (13) in dust removal barrel (1), breaks vortex ware (13) and is located under gas distribution pipe (3).
5. The saturated raw gas dedusting washing tower as recited in claim 4, wherein: the middle part still is equipped with whirlwind board-like demister (6) in dust removal barrel (1), and whirlwind board-like demister (6) are located between air inlet (2) and moisturizing mouth (9), and whirlwind board-like demister (6) center is fixed with gas distribution pipe (3) outer wall, and on an annular backing sheet (15) was fixed in to its bottom, annular backing sheet (15) and dust removal barrel (1) inner wall welding.
6. The saturated raw gas dedusting washing tower as recited in claim 5, wherein: the cyclone plate type demister (6) is an outward cyclone plate type demister (6) or an inward cyclone plate type demister (6).
7. The saturated raw gas dedusting washing tower as recited in claim 5, wherein: and the upper part in the dust removal barrel body (1) is also provided with a self-cleaning spray head device (8), and the self-cleaning spray head device (8) is positioned above the wire mesh demister (7).
8. The saturated raw gas dedusting washing tower as recited in claim 7, wherein: the liquid outlet (10) is communicated with the bottom of the dust removal cylinder body (1) through a pipeline provided with a long-radius elbow (14).
9. The saturated raw gas dedusting washing tower as recited in claim 8, wherein: vortex-proof baffle (5) are a plurality of rectangular plates, and according to radial evenly distributed in dust removal barrel (1), vortex-proof baffle (5) inboard edge is fixed with gas distribution pipe (3).
10. The saturated raw gas dedusting washing tower as recited in claim 9, wherein: an overflow pipe (12) is further arranged in the dust removal barrel body (1), the upper end of the overflow pipe (12) penetrates through the annular support sheet (15), the outer wall of the overflow pipe is fixedly connected with the annular support sheet (15), and the lower end of the overflow pipe (12) is inserted into the lower portion of the water bath dust removal area (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122289662.3U CN215742684U (en) | 2021-09-22 | 2021-09-22 | Dust removal washing tower for saturated raw gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122289662.3U CN215742684U (en) | 2021-09-22 | 2021-09-22 | Dust removal washing tower for saturated raw gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215742684U true CN215742684U (en) | 2022-02-08 |
Family
ID=80089574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122289662.3U Expired - Fee Related CN215742684U (en) | 2021-09-22 | 2021-09-22 | Dust removal washing tower for saturated raw gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215742684U (en) |
-
2021
- 2021-09-22 CN CN202122289662.3U patent/CN215742684U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220208 |