CN220098800U - Coal gasification black water pretreatment composite set - Google Patents
Coal gasification black water pretreatment composite set Download PDFInfo
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- CN220098800U CN220098800U CN202321220067.7U CN202321220067U CN220098800U CN 220098800 U CN220098800 U CN 220098800U CN 202321220067 U CN202321220067 U CN 202321220067U CN 220098800 U CN220098800 U CN 220098800U
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- pump
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- 239000010866 blackwater Substances 0.000 title claims abstract description 39
- 238000002309 gasification Methods 0.000 title claims abstract description 26
- 239000003245 coal Substances 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000004062 sedimentation Methods 0.000 claims abstract description 35
- 239000004576 sand Substances 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims abstract description 10
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- 230000008020 evaporation Effects 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 106
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 69
- 239000010797 grey water Substances 0.000 claims description 36
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 36
- 238000005469 granulation Methods 0.000 claims description 20
- 230000003179 granulation Effects 0.000 claims description 20
- 238000002425 crystallisation Methods 0.000 claims description 19
- 230000008025 crystallization Effects 0.000 claims description 19
- 238000005352 clarification Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003403 water pollutant Substances 0.000 abstract 1
- 239000010865 sewage Substances 0.000 description 10
- 239000013078 crystal Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model provides a coal gasification black water pretreatment combined device, which comprises: the device comprises a black water clarifying section, an ash water hardness removing section and an ash water turbidity reducing section, wherein the coal gasification black water is from a gasification furnace, and is sent to a clarifying tank to remove suspended matters after high-pressure flash evaporation, low-pressure flash evaporation and vacuum flash evaporation, slag is discharged from the bottom of the clarifying tank, the clarifying tank is dehydrated by a vacuum belt filter, and most of supernatant (ash water) of the clarifying tank is recycled and a small part of supernatant (ash water) is discharged. The external ash discharging water firstly enters into the hardness removal working section and then enters into the ash water turbidity reduction working section, the turbidity reduction working section mainly comprises a rotational flow sand setting tank and a radial flow sedimentation tank, the rotational flow sand setting tank is used for removing residual particles in ash water, the radial flow sedimentation tank is used for removing suspended matters in ash water, effluent from the radial flow sedimentation tank enters into a subsequent biochemical treatment unit to remove organic matters, and the treated ash water meets the requirements of the emission standard of pollutants in petrochemical industry (GB 31571-2015) for water pollutant emission limit (Table 1).
Description
Technical Field
The utility model relates to the field of coal gasification black water treatment, in particular to a coal gasification black water pretreatment combined device.
Background
The large-scale kerosene gas resource comprehensive utilization project coal gasification produced black water mostly needs to be recycled after clarification and deslagging, and a small part of black water needs to be continuously discharged after clarification and deslagging, so as to prevent the enrichment of hardness, ammonia nitrogen, organic matters and the like in the system from influencing the stable operation of the gasification furnace system.
At present, coal gasification black water is sent to a clarifying tank to remove suspended matters after high-pressure flash evaporation, low-pressure flash evaporation and vacuum flash evaporation, slag is discharged at the bottom of the clarifying tank, the supernatant (ash water) of the clarifying tank is dewatered by a vacuum belt filter, most of the supernatant (ash water) is recycled, and a small part of the ash water is discharged to a sewage treatment station to remove ammonia nitrogen and organic matters after being pressurized and heat-exchanged. The total hardness and suspension in the externally discharged ash water are higher, and the subsequent sewage treatment device pipelines and structures are easy to be blocked.
Disclosure of Invention
The embodiment of the utility model solves the technical problems that the existing coal gasification external ash discharge water is blocked by the pipeline and equipment of a sewage treatment station due to total hardness and suspended matters by providing the coal gasification black water pretreatment combined device.
The utility model provides a coal gasification black water pretreatment combined device which comprises a black water clarification section for removing floating slag in black water, an ash water hardness removal section for reducing ash water hardness and an ash water turbidity reduction section for reducing ash water turbidity which are connected in sequence.
In one possible implementation, the black water clarification section includes a flocculant tank, a flocculant pump, a flocculant agitator, a clarifier tank, a grey water pump, and a grey water heat exchanger; the flocculant stirrer is a flocculant tank accessory device, the input end of the flocculant tank is production water and liquid flocculant, the output end of the flocculant tank is connected with the input end of a flocculant pump, and the output end of the flocculant pump is connected with the clarifying tank; the input end of the clarifying tank is the output end of a black water and flocculant pump which is discharged from the gasification furnace and subjected to high-pressure, low-pressure and vacuum flash evaporation treatment, and the output end of the clarifying tank is connected with a grey water tank; the output end of the ash water tank is connected with an ash water pump, the output end of the ash water pump is connected with an ash water heat exchanger and a recycling system, and the output end of the ash water heat exchanger is connected with an ash water hardness removal working section.
In one possible implementation, the grey water hardness removal section comprises a sodium hydroxide tank, a sodium hydroxide dosing pump, a sodium hydroxide stirrer, a sodium carbonate tank, a sodium carbonate dosing pump, a sodium carbonate stirrer, and a crystallization granulation hardness removal reactor; the sodium hydroxide stirrer is sodium hydroxide tank accessory equipment, the input end of the sodium hydroxide tank is liquid sodium hydroxide and production water, the output end of the sodium hydroxide tank is connected with the input end of a sodium hydroxide dosing pump, and the output end of the sodium hydroxide dosing pump is connected with a crystallization granulation hardness removal reactor; the sodium carbonate stirrer is accessory equipment of a sodium carbonate tank, the input end of the sodium carbonate tank is solid sodium carbonate powder and production water, the output end of the sodium carbonate tank is connected with a sodium carbonate dosing pump, and the output end of the sodium carbonate dosing pump is connected with a crystallization granulation hardness removal reactor; the input end of the crystallization granulation and hardness removal reactor is connected with the grey water heat exchanger, and the output end of the crystallization granulation and hardness removal reactor is connected with the grey water turbidity reduction working section.
In one possible implementation manner, the grey water turbidity reducing section comprises a flocculant tank, a flocculant pump, a flocculant stirrer, a rotational flow grit chamber stirrer, a radial flow sedimentation chamber mud scraper and a radial flow sedimentation chamber mud pump; the flocculant stirrer is a flocculant tank accessory device, the input end of the flocculant tank is produced water and solid flocculant, the output end of the flocculant tank is connected with a flocculant pump, and the output end of the flocculant pump is connected with a rotational flow sand basin; the cyclone sand setting tank stirrer is a cyclone sand setting tank accessory device, and the output end of the cyclone sand setting tank is connected with the radial flow sedimentation tank; the radial sedimentation tank mud scraper is a radial sedimentation tank accessory device, and the output end of the radial sedimentation tank is connected with a radial sedimentation tank mud pump and a subsequent biological treatment unit.
One or more technical solutions provided in the novel embodiments of the present utility model at least have the following technical effects or advantages:
the embodiment of the utility model provides a coal gasification black water pretreatment combined device, which comprises a black water clarification section for removing floating slag in black water, an ash water hardness removal section for reducing ash water hardness and an ash water turbidity reduction section for reducing ash water turbidity which are connected in sequence. Solves the technical problems of scaling and blockage of pipelines and structures of the subsequent sewage treatment device caused by the coal gasification black water discharged outside. Therefore, the coal gasification black water pretreatment device provided by the embodiment of the utility model effectively relieves the scaling and blockage of the subsequent sewage treatment device, prolongs the overhaul period of the sewage treatment device, provides a guarantee for the stable operation of the coal gasification device, and meets the development requirements of quality improvement and synergy.
Drawings
In order to more clearly illustrate the technical solutions of the novel embodiments of the present utility model, the drawings that are needed in the description of the novel embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are novel embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a coal gasification black water pretreatment device according to an embodiment of the present utility model.
Reference numerals: 1-a black water clarifying section; 11-a first flocculant tank; 12-a first flocculant pump; 13-a first flocculant mixer; 14-a clarifying tank; 15-ash water tank; 16-ash water pump; 17-grey water heat exchanger; 2-a grey water hardness removal section; 21-a sodium hydroxide tank; 22-sodium hydroxide dosing pump; 23-sodium hydroxide stirrer; a 24-sodium carbonate tank; 25-sodium carbonate dosing pump; 26-sodium carbonate stirrer; 27-crystallizing granulation and hard removal reactor; 3-a grey water turbidity reducing section; 31-a second flocculant tank; 32-a second flocculant pump; 33-a second flocculant mixer; 34-a rotational flow sand setting tank; 35-a cyclone sand basin stirrer; 36-radial sedimentation tank; 37-radial flow sedimentation tank mud scraper; 38-radial sedimentation tank sludge pump.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the novel protection of the present utility model.
In the description of the embodiments of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, only for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.
As shown in fig. 1, the coal gasification black water pretreatment device provided by the embodiment of the utility model comprises a black water clarification section 1 for removing floating slag in black water, a grey water hardness removal section 2 for reducing grey water hardness and a grey water turbidity reduction section 3 for reducing grey water turbidity which are connected in sequence. Solves the technical problems of scaling and blockage of pipelines and structures of the subsequent sewage treatment device caused by the coal gasification black water discharged outside. Therefore, the coal gasification black water pretreatment device provided by the embodiment of the utility model effectively relieves the scaling and blockage of the subsequent sewage treatment device, prolongs the overhaul period of the sewage treatment device, provides a guarantee for the stable operation of the coal gasification device, and meets the development requirements of quality improvement and synergy.
With continued reference to fig. 1, the black water clarification section 1 comprises a first flocculant tank 11, a first flocculant pump 12, a first flocculant agitator 13, a clarification tank 14, a grey water tank 15, a grey water pump 16, a grey water heat exchanger 17. The first flocculant stirrer 13 is accessory equipment of a first flocculant tank 11, the first flocculant tank 11 is connected with the input end of a first flocculant pump 12, and the output end of the first flocculant pump 12 is connected with a clarifying tank 14; the clarifying tank 14 is connected with the grey water tank 15; the ash water tank 15 is connected with an ash water pump 16, the output end of the ash water pump 16 is connected with an ash water heat exchanger 17 and a recycling system, and the ash water heat exchanger 17 is connected with the ash water hardness removal working section 2.
Black water discharged from the gasification furnace is subjected to high-pressure, low-pressure and vacuum flash evaporation treatment and then mixed with a flocculating agent to enter a clarifying tank 14, supernatant fluid of the clarifying tank 14 automatically flows into an ash water tank 15, slag is discharged from the bottom of the clarifying tank 14, a vacuum belt filter is used for dewatering, most of ash water in the ash water tank 15 is pressurized by an ash water pump 16 and then recycled, and a small part of ash water in the ash water tank 15 is pressurized by the ash water pump 16 and then is cooled by an ash water heat exchanger 17 and then is sent into an ash water hardness removal working section 2.
Specifically, the total solid content in the black water at the inlet of the settling tank 14 is about 10%, the suspended matter content in the supernatant (grey water) of the settling tank 14 is about 200mg/L, the total hardness in the grey water is about 1400-1800mg/L, and the hydraulic retention time of the black water in the settling tank 14 is about 4 hours. For convenient maintenance, the grey water heat exchanger 17 needs to be provided with a standby machine.
As shown in fig. 1, the grey water hardness removal section 2 includes a sodium hydroxide tank 21, a sodium hydroxide dosing pump 22, a sodium hydroxide agitator 23, a sodium carbonate tank 24, a sodium carbonate dosing pump 25, a sodium carbonate agitator 26, and a crystallization granulation hardness removal reactor 27. The sodium hydroxide stirrer 23 is an accessory device of a sodium hydroxide tank 21, the input end of the sodium hydroxide tank 21 is liquid sodium hydroxide and production water, the output end of the sodium hydroxide tank 21 is connected with the input end of a sodium hydroxide dosing pump 22, and the output end of the sodium hydroxide dosing pump 22 is connected with a crystallization granulation hardness removal reactor 27; the sodium carbonate stirrer 26 is an accessory device of the sodium carbonate tank 24, the input end of the sodium carbonate tank 24 is solid sodium carbonate powder and production water, the output end of the sodium carbonate stirrer is connected with the sodium carbonate dosing pump 25, and the output end of the sodium carbonate dosing pump 25 is connected with the crystallization granulation hardness removal reactor 27; the input end of the crystallization granulation and hardness removal reactor 27 is connected with the grey water heat exchanger 17, and the output end is connected with the grey water turbidity reducing section 3.
The crystallization granulation and hardness removal reactor 27 was operated under alkaline conditions, and sodium carbonate was added for the purpose of mixing with Ca 2+ Forming calcium carbonate crystal, adding sodium hydroxide for the purpose of mixing with Mg 2+ A precipitate formed. The sodium hydroxide and sodium carbonate adding points are all positioned at the bottom of the reactor, and the sodium hydroxide adding point is positioned at the front end of the sodium carbonate adding point. The reactor for removing hardness is filled with water from the bottom and discharged from the upper part. In order to facilitate the rapid growth of calcium carbonate crystals, crystal seeds are periodically added into the crystallization granulation hard removal reactor 27, the crystal seed adding point is positioned at the upper middle part of the equipment, the crystallization granulation hard removal reactor 27 is divided into a water distribution area, a reaction area, a separation area, a standing area and a sludge discharge area, and crystals which are completely grown are periodically discharged from the crystallization granulation hard removal reactor 27. The grey water treated by the crystallization granulation hard removal reactor 27 automatically flows into the grey water turbidity reduction section 3.
Specifically, the crystallization granulation hardness removal reactor 7 has an inlet hardness of about 1400-1800mg/L, a total alkalinity of about 200-300mg/L, an outlet hardness of about 100-400mg/L, and an alkalinity of about 400-500mg/L.
As shown in fig. 1, the grey water turbidity reducing section 3 comprises a second flocculant tank 31; a second flocculant pump 32; a second flocculant mixer 33; a cyclone grit chamber 34; a cyclone grit chamber stirrer 35; a radial flow sedimentation tank 36; a radial flow sedimentation tank mud scraper 37; radial flow sedimentation tank dredge pump 38. The second flocculant stirrer 33 is a second flocculant tank 31 accessory device, the input end of the second flocculant tank 31 is production water and solid flocculant, the output end of the second flocculant tank is connected with a second flocculant pump 32, and the output end of the second flocculant pump 32 is connected with a cyclone sand basin 34; the cyclone grit chamber stirrer 35 is an accessory device of the cyclone grit chamber 34, and the output end of the cyclone grit chamber 34 is connected with the radial flow sedimentation tank 36; the radial sedimentation tank mud scraper 37 is an accessory device of the radial sedimentation tank 36, and the output end of the radial sedimentation tank 36 is connected with a radial sedimentation tank mud pump 38 and a subsequent biological treatment unit.
It should be noted that the cyclone grit chamber 34 is used to remove large particle impurities, and the radial flow sedimentation chamber 36 is used to remove suspended substances. The sludge deposited in the radial flow sedimentation tank 36 slowly enters the center of the tank bottom under the action of a mud scraper, and is sent to a downstream sludge concentration and filter pressing unit through a mud pump, and the supernatant fluid of the radial flow sedimentation tank 36 automatically flows into a subsequent biological treatment unit.
Specifically, the radial sedimentation tank 36 has an inlet suspension of about 200mg/L and an outlet suspension of about 50mg/L, and most of the particulate matter and suspended matter can be removed by the cyclone sand basin 34 and the radial sedimentation tank 36.
Further, most of scum is removed from coal gasification black water through a black water clarification section 1, most of hardness is removed through a gray water hardness removal section 2, and most of suspended matters are removed through a gray water turbidity removal section, so that the water inlet requirement of a subsequent biochemical treatment unit can be met. The sewage treated by the biochemical treatment unit can meet the index requirements of the pollutant emission standard (GB 31571-2015) table 2 of the petrochemical industry.
In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the present utility model; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (1)
1. The coal gasification black water pretreatment combined device is characterized by sequentially connecting a black water clarification section (1) for removing floating slag in black water, an ash water hardness removal section (2) for reducing ash water hardness and an ash water turbidity reduction section (3) for reducing ash water turbidity;
the black water clarifying section (1) comprises a first flocculant tank (11), a first flocculant pump (12), a first flocculant stirrer (13), a clarifying tank (14), a grey water tank (15), a grey water pump (16) and a grey water heat exchanger (17);
the first flocculant stirrer (13) is an accessory device of a first flocculant tank (11), the input end of the first flocculant tank (11) is used for producing water and liquid flocculant, the output end of the first flocculant tank (11) is connected with the input end of a first flocculant pump (12), and the output end of the first flocculant pump (12) is connected with a clarifying tank (14);
the input end of the clarifying tank (14) is the output end of the black water and the first flocculant pump (12) discharged by the gasifier after high-pressure, low-pressure and vacuum flash evaporation treatment, and the output end of the clarifying tank (14) is connected with the ash water tank (15);
the output end of the ash water tank (15) is connected with an ash water pump (16), the output end of the ash water pump (16) is connected with an ash water heat exchanger (17) and a recycling system, and the output end of the ash water heat exchanger (17) is connected with an ash water hardness removal working section (2);
the grey water hardness removal working section (2) comprises a sodium hydroxide tank (21), a sodium hydroxide dosing pump (22), a sodium hydroxide stirrer (23), a sodium carbonate tank (24), a sodium carbonate dosing pump (25), a sodium carbonate stirrer (26) and a crystallization granulation hardness removal reactor (27);
the sodium hydroxide stirrer (23) is accessory equipment of a sodium hydroxide tank (21), the input end of the sodium hydroxide tank (21) is liquid sodium hydroxide and production water, the output end of the sodium hydroxide tank (21) is connected with the input end of a sodium hydroxide dosing pump (22), and the output end of the sodium hydroxide dosing pump (22) is connected with a crystallization granulation hardness removal reactor (27);
the sodium carbonate stirrer (26) is accessory equipment of a sodium carbonate tank (24), the input end of the sodium carbonate tank (24) is solid sodium carbonate powder and production water, the output end of the sodium carbonate stirrer is connected with a sodium carbonate dosing pump (25), and the output end of the sodium carbonate dosing pump (25) is connected with a crystallization granulation hardness removal reactor (27);
the input end of the crystallization granulation and hardness removal reactor (27) is connected with the gray water heat exchanger (17), and the output end is connected with the gray water turbidity reduction working section (3);
the grey water turbidity reduction working section (3) comprises a second flocculant tank (31), a second flocculant pump (32), a second flocculant stirrer (33), a cyclone sand basin (34), a cyclone sand basin stirrer (35), a radial sedimentation basin (36), a radial sedimentation basin mud scraper (37) and a radial sedimentation basin mud pump (38);
the second flocculant stirrer (33) is a second flocculant tank (31) accessory device, the input end of the second flocculant tank (31) is production water and solid flocculant, the output end of the second flocculant tank is connected with a second flocculant pump (32), and the output end of the second flocculant pump (32) is connected with a cyclone sand sedimentation tank (34);
the cyclone sand setting tank stirrer (35) is accessory equipment of the cyclone sand setting tank (34), and the output end of the cyclone sand setting tank (34) is connected with the radial flow sedimentation tank (36);
the radial sedimentation tank mud scraper (37) is an accessory device of the radial sedimentation tank (36), and the output end of the radial sedimentation tank (36) is connected with a radial sedimentation tank mud pump (38) and a subsequent biological treatment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321220067.7U CN220098800U (en) | 2023-05-19 | 2023-05-19 | Coal gasification black water pretreatment composite set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321220067.7U CN220098800U (en) | 2023-05-19 | 2023-05-19 | Coal gasification black water pretreatment composite set |
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| Publication Number | Publication Date |
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| CN220098800U true CN220098800U (en) | 2023-11-28 |
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| CN202321220067.7U Active CN220098800U (en) | 2023-05-19 | 2023-05-19 | Coal gasification black water pretreatment composite set |
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| Country | Link |
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| CN (1) | CN220098800U (en) |
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