CN203782114U - Dry pulverized coal gasification system - Google Patents
Dry pulverized coal gasification system Download PDFInfo
- Publication number
- CN203782114U CN203782114U CN201420087141.7U CN201420087141U CN203782114U CN 203782114 U CN203782114 U CN 203782114U CN 201420087141 U CN201420087141 U CN 201420087141U CN 203782114 U CN203782114 U CN 203782114U
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- CN
- China
- Prior art keywords
- raw gas
- washing
- lock hopper
- water
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003245 coal Substances 0.000 title claims abstract description 60
- 238000002309 gasification Methods 0.000 title claims abstract description 50
- 238000005406 washing Methods 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000000428 dust Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 238000009434 installation Methods 0.000 claims description 28
- 230000035939 shock Effects 0.000 claims description 25
- 239000002817 coal dust Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 238000005201 scrubbing Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000003034 coal gas Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 2
- -1 and therefore Substances 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 42
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Landscapes
- Industrial Gases (AREA)
Abstract
The utility model discloses a dry pulverized coal gasification system. The dry pulverized coal gasification system comprises a pulverized coal conveying device, a gasifying device and a raw coal gas washing device, wherein the pulverized coal conveying device is used for conveying the pulverized coal to the gasifying device as a gasifying material; the gasifying device is used for gasifying the pulverized coal from the pulverized coal conveying device to produce a raw coal gas; the raw coal gas washing device used for washing and dedusting the raw coal gas from the gasifying device. According to the gasification system disclosed by the utility model, the raw coal gas discharged from a chilling chamber is further washed through primary and secondary Venturi washers, and a washing tower in sequence to remove finer particles in the raw coal gas, and therefore, dust content of the raw coal gas reaches demands of a transformation process, and long-cycle stable operation of the system is realized.
Description
Technical field
The utility model relates to gasification field, relates in particular to a kind of dry coal powder gasification system.
Background technology
The cleaning of coal is the great technical task in energy and environment protection field, the world today with efficient utilization, also be one of gordian technique of Chinese national economy sustainable development, gasification is the main path that primary energy source is changed into clean secondary energy, extensive high-effective gas technology is the coal-based chemicals production of development, Coal-based Liquid Fuel (synthetic oil, methyl alcohol, dme etc.), advanced integrated gasification combined cycle plants (IGCC) power generation system, polygenerations systeme, hydrogen manufacturing, the basis of the process industrial such as fuel cell and direct reduction iron making, it is the common techniques of these industries, gordian technique and leading technology.
Entrained flow bed gasification technology is applied widely because of its coal, requires the feature such as not harsh to become the mainstream development direction of modern Coal Gasification Technology to pit ash.Due to it, to realize extensive working time not long, its pulverized coal conveying device and raw gas washing design are loaded down with trivial details, weak effect, wherein delivery system is always unstable, causes device frequently to stop, and washing system equipment is many especially, washing effect is poor, in raw gas, solid content is high, and equipment attrition is serious, and the life-span is short.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of dry coal powder gasification system, to solve the problem of existing dry coal powder gasification system fluctuation of service.
For achieving the above object, the utility model is by the following technical solutions:
A kind of dry coal powder gasification system, described system comprises:
Pulverized coal conveying device, for to gasification installation pulverized coal conveying as gasified raw material;
Gasification installation, for to gasifying to produce raw gas from the coal dust of described pulverized coal conveying device; With
Raw gas scrubbing device, carries out scrubbing dust collection for the raw gas to from described gasification installation;
Wherein, described raw gas scrubbing device comprises:
One-level Venturi scrubber, for washing the raw gas from described gasification installation;
One-level Venturi separating tank, for separating of the raw gas from described one-level Venturi scrubber and washing water, to isolate raw gas and washing water;
Secondary Venturi scrubber, for further washing the raw gas from described one-level Venturi separating tank; With
Washing tower, for washing the raw gas from secondary Venturi scrubber.
According to system of the present utility model, preferably, described pulverized coal conveying device comprise coal bunker, issuance of materials tank and be connected in described coal bunker and issuance of materials tank between the first lock hopper and the second lock hopper; The bottom of described coal bunker is provided with two taper coal outlets, described two taper coal outlets are connected to the first lock hopper and the second lock hopper by pipeline respectively, the outlet at bottom of described the first lock hopper and the second lock hopper is connected to described issuance of materials tank by pipeline, and the outlet at bottom of described issuance of materials tank is connected to described gasification installation by pipeline; Wherein, on connecting tube between connecting tube, the second lock hopper and issuance of materials tank between connecting tube between connecting tube between described coal bunker and the first lock hopper, described coal bunker and the second lock hopper and described the first lock hopper and issuance of materials tank, be equipped with control valve, in described the first lock hopper and the second lock hopper, be equipped with pressurising pipeline and pressure relief pipe.
According to system of the present utility model, preferably, between described issuance of materials tank and described gasification installation, be provided with 3-5 root coal dust pipeline.
According to system of the present utility model, preferably, described gasification installation comprises vapourizing furnace, described vapourizing furnace comprises the combustion chamber on top and the shock chamber of bottom, described shock chamber comprises chilling ring and downtake, described chilling ring connects outside Quench water pipe, the raw gas generating for spraying and wash combustion chamber gasification; Described downtake is arranged on chilling ring below, for the chilled water after spray raw gas and raw gas being imported to the water-bath of bottom, described shock chamber.
According to system of the present utility model, preferably, between the outer wall of described downtake and shock chamber, be provided with the broken bubble of 2-6 layer plate.
According to system of the present utility model, preferably, described gasification installation also comprises drum and water cooler, in the sidewall of described combustion chamber, is provided with water wall, and described drum, for the gas-vapor mix from described water wall is separated, is isolated liquid water and steam; Described water cooler is cooling for the liquid water from drum is carried out, and then cooled liquid water is sent back in described water wall.
According to system of the present utility model, preferably, described gasification installation also comprises dreg-locking hopper and dragveyer, for discharging the slag of described vapourizing furnace.
According to system of the present utility model, preferably, the washing water outlet of the bottom of described washing tower is connected to the top of downtake described in shock chamber through pipeline, for shock chamber provides raw gas washing water, and/or be connected to described one-level Venturi scrubber and secondary Venturi scrubber through pipeline, so that washing water to be provided.
According to system of the present utility model, preferably, in described washing tower, be provided with the Pall ring metallic stuffing of loose heap, described filler is divided into upper and lower two-layer being arranged in described washing tower; Between described upper and lower two-layer filler, be provided with and slightly wash washing water inlet, above the filler of upper strata, be provided with fine purifiation washing water inlet.
The dry coal powder gasification system that the utility model provides makes full use of existing Quench purification process, make from combustion chamber raw gas in shock chamber first through chilled water Quench rinse after, import water-bath through downtake again and carry out final dusting, effectively reduce ash content in synthetic gas, alleviate the load of subsequent wash workshop section simultaneously, go out the raw gas of shock chamber successively through one-level, the washing of secondary Venturi scrubber and washing tower further wash, to remove in raw gas more fine particle, make the dustiness of raw gas reach the requirement of shift conversion step, in addition, the utility model is stable for the conveying of coal dust, be easy to control, pulverized coal flow fluctuation in each coal dust pipeline changes little, the long-period stable operation of feasible system.
Brief description of the drawings
Fig. 1 is the schematic diagram of a kind of embodiment of dry coal powder gasification system of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described, but the utility model is not limited in this.
As shown in Figure 1, dry coal powder gasification system of the present utility model comprises pulverized coal conveying device, gasification installation and raw gas scrubbing device.
Described pulverized coal conveying device is used to described gasification installation pulverized coal conveying as gasified raw material.In a kind of embodiment of the present utility model, described pulverized coal conveying device comprises coal bunker 1, issuance of materials tank 3 and is connected in the first lock hopper 2 and the second lock hopper 2 ' between described coal bunker 1 and issuance of materials tank 3.Described coal bunker 1 is provided with two taper coal outlets, and described two taper coal outlets are connected to the first lock hopper 2 and the second lock hopper 2 ' by pipeline respectively.The outlet at bottom of described the first lock hopper 2 and the second lock hopper 2 ' is connected to described issuance of materials tank 3 by pipeline, and the outlet at bottom of described issuance of materials tank 3 is connected to gasification installation by pipeline.Preferably, between described issuance of materials tank and gasification installation, be provided with many coal dust pipelines, such as 3-5 root, so that coal dust conveying is more stable.
Wherein, on connecting tube between connecting tube, the second lock hopper 2 ' and issuance of materials tank 3 between connecting tube between connecting tube, described coal bunker 1 and the second lock hopper 2 ' between described coal bunker 1 and the first lock hopper 2 and described the first lock hopper 2 and issuance of materials tank 3, be equipped with control valve (not shown), in described the first lock hopper 2 and the second lock hopper 2 ', be equipped with pressurising pipeline and pressure relief pipe (not shown), such as pressurising or the pressure relief pipe of nitrogen or carbonic acid gas.
When operation, described the first lock hopper 2 and the alternately pressurising pressure release of the second lock hopper 2 ', to coal supply in issuance of materials tank 3.For example, when after the first lock hopper 2 pressure releases, open the control valve between the first lock hopper 2 and coal bunker 1, coal dust enters in the first lock hopper 2 under the effect of gravity, close this control valve, the first lock hopper 2 is pressurized to a little more than the pressure in issuance of materials tank 3, open the control valve (now the control valve between the second lock hopper 2 ' and issuance of materials tank 3 is closed) between the first lock hopper 2 and issuance of materials tank 3, coal dust enters in issuance of materials tank 3, after completing, close the control valve between the first lock hopper 2 and issuance of materials tank 3, the first lock hopper is carried out to pressure release, so replace.Coal dust in issuance of materials tank 3 is sent to gasification installation under the effect of pressure reduction, as gasified raw material.
Described gasification installation is used to gasifying to produce raw gas from the coal dust of described pulverized coal conveying device.In a kind of embodiment of the present utility model, described gasification installation comprises vapourizing furnace 5, described vapourizing furnace 5 comprises the combustion chamber 51 on top and the shock chamber 54 of bottom, described shock chamber 54 comprises chilling ring 56 and downtake 53, described chilling ring 56 connects outside Quench water pipe, for Quench and wash the raw gas that combustion chamber 51 gasification generates; Described downtake 53 is arranged on chilling ring 56 belows, imports the water-bath of 54 bottoms, shock chamber for chilled water that chilling ring 56 is sprayed out and raw gas.The raw gas that gasification generates first carries out one-time dedusting through chilling ring 56 spraying coolings on 54 tops, shock chamber, import in the water-bath of 54 bottoms, shock chamber and carry out final dusting through downtake 53 again, thereby effectively reduce ash content in synthetic gas, alleviate the load of subsequent wash workshop section.
Preferably, between the outer wall of described downtake 53 and shock chamber 54, be provided with the broken bubble of 2-5 layer plate 55, to abolish bubble, improve washing effect.
Washing water in described shock chamber 54 are sent to black water treatment system by the washing water outlet of 54 bottoms, shock chamber through pipeline.
One preferred embodiment in, described gasification installation also comprises drum 11 and water cooler 10, in the sidewall 52 of described combustion chamber 51, is provided with water wall, to absorb the heat in combustion chamber, protection combustion chamber sidewall.Described drum 11 is used to, to separating from the gas-vapor mix in described water wall, isolate liquid water and steam, and wherein isolated steam is sent battery limit (BL).Described water cooler 10, for cooling to carrying out from described drum 11 liquid waters, is then sent cooled liquid water in water wall back to.
At another kind, preferably in embodiment, described gasification installation also comprises dreg-locking hopper 12 and dragveyer 13, to discharge the slag of vapourizing furnace 5.
Described raw gas scrubbing device is used to the raw gas from described gasification installation to carry out scrubbing dust collection.In a kind of embodiment of the present utility model, described raw gas scrubbing device comprises one-level Venturi scrubber 6, one-level Venturi separating tank 7, secondary Venturi scrubber 8 and washing tower 9.
Described Venturi scrubber 6 is for washing the raw gas from vapourizing furnace shock chamber 54, and its washing principle is known in this field, just no longer describes in detail here.Raw gas after washing and washing water enter in the lump one-level Venturi separating tank 7 and carry out gas-liquid separation, and isolated raw gas is drawn and entered secondary Venturi scrubber 8 and further wash from the abhiseca of one-level Venturi separating tank 7; Isolated containing solid washings from sending into the bottom of washing tower 9 at the bottom of tank.Raw gas after described secondary Venturi scrubber 8 washings and washing water are admitted to the bottom of washing tower 9.
Described washing tower 9 is for further washing is from the raw gas of secondary Venturi scrubber 8, and the raw gas of rising is interior after washing water washing at washing tower 9, is sent to conversion section by the raw gas outlet at washing tower 9 tops through pipeline.Described washing tower 9 is interior can arrange column plate and/or packing layer, in an embodiment of the present utility model, is provided with the metallic stuffing of loose heap Pall ring in described washing tower 9, and described filler is divided into two-layer, and the height of every layer of filler can be 3-5m.Raw gas rises at the bottom of tower, and washing water spray from tower top, and during through filler, washing water fully contact with raw gas, thereby take away fine solid particles in raw gas, and the raw gas after washing is drawn and is sent to next conversion section by washing tower 26 tower tops.
Preferably, described washing tower 9 is provided with and slightly washes washing water inlet between two-layer filler, and raw gas is slightly washed, and its bath water can be from the buck of conversion section; Above whole filler, be provided with fine purifiation washing water inlet, its bath water can be the phlegma from conversion section, and the coal gas rising in tower is carried out to fine purifiation.
The washing water outlet of described washing tower 9 bottoms is connected to respectively shock chamber 54 and/or one-level, secondary Venturi scrubber 6,8 through pipeline, is used separately as the washing water of the wash-down water of shock chamber 54 and one-level, secondary Venturi scrubber 6,8.
Claims (9)
1. a dry coal powder gasification system, described system comprises:
Pulverized coal conveying device, for to gasification installation pulverized coal conveying as gasified raw material;
Gasification installation, for to gasifying to produce raw gas from the coal dust of described pulverized coal conveying device; With
Raw gas scrubbing device, carries out scrubbing dust collection for the raw gas to from described gasification installation;
Wherein, described raw gas scrubbing device comprises:
One-level Venturi scrubber, for washing the raw gas from described gasification installation;
One-level Venturi separating tank, for separating of the raw gas from described one-level Venturi scrubber and washing water, to isolate raw gas and washing water;
Secondary Venturi scrubber, for further washing the raw gas from described one-level Venturi separating tank; With
Washing tower, for washing the raw gas from secondary Venturi scrubber.
2. the system as claimed in claim 1, is characterized in that, described pulverized coal conveying device comprise coal bunker, issuance of materials tank and be connected in described coal bunker and issuance of materials tank between the first lock hopper and the second lock hopper; The bottom of described coal bunker is provided with two taper coal outlets, described two taper coal outlets are connected to the first lock hopper and the second lock hopper by pipeline respectively, the outlet at bottom of described the first lock hopper and the second lock hopper is connected to described issuance of materials tank by pipeline, and the outlet at bottom of described issuance of materials tank is connected to described gasification installation by pipeline; Wherein, on connecting tube between connecting tube, the second lock hopper and issuance of materials tank between connecting tube between connecting tube between described coal bunker and the first lock hopper, described coal bunker and the second lock hopper and described the first lock hopper and issuance of materials tank, be equipped with control valve, in described the first lock hopper and the second lock hopper, be equipped with pressurising pipeline and pressure relief pipe.
3. system as claimed in claim 2, is characterized in that, is provided with 3-5 root coal dust pipeline between described issuance of materials tank and described gasification installation.
4. the system as claimed in claim 1, it is characterized in that, described gasification installation comprises vapourizing furnace, described vapourizing furnace comprises the combustion chamber on top and the shock chamber of bottom, described shock chamber comprises chilling ring and downtake, described chilling ring connects outside Quench water pipe, the raw gas generating for spraying and wash combustion chamber gasification; Described downtake is arranged on chilling ring below, for the chilled water after spray raw gas and raw gas being imported to the water-bath of bottom, described shock chamber.
5. system as claimed in claim 4, is characterized in that, is provided with the broken bubble of 2-6 layer plate between the outer wall of described downtake and shock chamber.
6. system as claimed in claim 4, it is characterized in that, described gasification installation also comprises drum and water cooler, in the sidewall of described combustion chamber, is provided with water wall, described drum, for the gas-vapor mix from described water wall is separated, is isolated liquid water and steam; Described water cooler is cooling for the liquid water from drum is carried out, and then cooled liquid water is sent back in described water wall.
7. system as claimed in claim 4, is characterized in that, described gasification installation also comprises dreg-locking hopper and dragveyer, for discharging the slag of described vapourizing furnace.
8. system as claimed in claim 4, it is characterized in that, the washing water outlet of the bottom of described washing tower is connected to the top of downtake described in shock chamber through pipeline, for shock chamber provides raw gas washing water, and/or be connected to described one-level Venturi scrubber and secondary Venturi scrubber through pipeline, so that washing water to be provided.
9. system as claimed in claim 8, is characterized in that, is provided with the Pall ring metallic stuffing of loose heap in described washing tower, and described filler is divided into upper and lower two-layer being arranged in described washing tower; Between described upper and lower two-layer filler, be provided with and slightly wash washing water inlet, above the filler of upper strata, be provided with fine purifiation washing water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087141.7U CN203782114U (en) | 2014-02-27 | 2014-02-27 | Dry pulverized coal gasification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087141.7U CN203782114U (en) | 2014-02-27 | 2014-02-27 | Dry pulverized coal gasification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203782114U true CN203782114U (en) | 2014-08-20 |
Family
ID=51318320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087141.7U Expired - Lifetime CN203782114U (en) | 2014-02-27 | 2014-02-27 | Dry pulverized coal gasification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203782114U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820159A (en) * | 2014-02-27 | 2014-05-28 | 神华集团有限责任公司 | Dry coal dust gasification system |
| CN104263410A (en) * | 2014-09-28 | 2015-01-07 | 中国东方电气集团有限公司 | Coal gasification waste heat recovery system |
| CN105062574A (en) * | 2015-08-31 | 2015-11-18 | 山东兖矿国拓科技工程有限公司 | Efficient combined dusty syngas washing dust removal device and method thereof |
-
2014
- 2014-02-27 CN CN201420087141.7U patent/CN203782114U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820159A (en) * | 2014-02-27 | 2014-05-28 | 神华集团有限责任公司 | Dry coal dust gasification system |
| CN103820159B (en) * | 2014-02-27 | 2015-12-09 | 神华集团有限责任公司 | A kind of dry coal powder gasification system |
| CN104263410A (en) * | 2014-09-28 | 2015-01-07 | 中国东方电气集团有限公司 | Coal gasification waste heat recovery system |
| CN105062574A (en) * | 2015-08-31 | 2015-11-18 | 山东兖矿国拓科技工程有限公司 | Efficient combined dusty syngas washing dust removal device and method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |