CN206424723U - Raw gas washing system - Google Patents
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- CN206424723U CN206424723U CN201621315574.9U CN201621315574U CN206424723U CN 206424723 U CN206424723 U CN 206424723U CN 201621315574 U CN201621315574 U CN 201621315574U CN 206424723 U CN206424723 U CN 206424723U
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Abstract
The utility model discloses a kind of raw gas washing system, including：Dry dust removal apparatus, is connected to the raw gas outlet of the gasification furnace, for carrying out dry dust removal to the raw gas from the gasification furnace；And water washing device, the raw gas outlet of the dry dust removal apparatus is connected to, for being washed to the raw gas Jing Guo dry dust removal.In the utility model, after dry dust removal, raw gas still keeps high temperature, therefore, it can utilize the high temperature rough gas by-product middle pressure steam, so as to improve the utilization ratio of energy.In addition, the dry dust produced after dry dust removal is without being handled, can direct Collection utilization, reduce the pressure of subsequent separation system.In addition, when carrying out dry dust removal to raw gas, it is not necessary to use gas liquor, therefore, reduce the consumption of washings, save water resource and cost, and also enhance the clean result of raw gas, it is ensured that the quality of raw gas.
Description
Technical field
The utility model is related to a kind of raw gas washing system for being suitable to wash the raw gas discharged from gasification furnace.
Background technology
In the prior art, conventional fixed-bed gasification furnace is typically all washed using wet scrubbing method to raw gas
Wash.The generation of existing raw gas and washing process flow are as follows：
The raw material lump coal of warehouse adds the coal lock of gasification furnace by gravity at ambient pressure, is added to after coal lock pressurization through transitional storehouse
The top of gasification furnace.Feed coal into gasification furnace is moved from top to bottom, sequentially passes through preheating, drying, destructive distillation, gasification and burning
Area, the steaming oxygen mixture sprayed into the blowing air down mouthful from gasification furnace is burnt and reacted, synthesis gas that reaction is generated (or
For raw gas) the up feed coal with gasification furnace leaves after fully exchanging heat from gasification furnace upper outlet.
High temperature rough gas leaves uses circulating gas water Quench and washing in scrubber cooler immediately after gasification furnace, occur strong
Strong mass-and heat-transfer, raw gas is cooled to 190 DEG C or so.Raw gas is in scrubber cooler by water saturation, its powder carried secretly
Dirt is also washed with soluble material out to be entered in waste liquid.Afterwards, raw gas enters the collecting tank of waste heat boiler, waste heat boiler
Heat transferring medium (being usually water) in stove is exchanged heat with raw gas, to reduce the temperature of raw gas, while low pressure can be produced
Steam.Afterwards, raw gas leaves at the top of waste heat boiler, and condenses the gas liquor produced with dissolved matter, condensate and powder
Dirt is discharged from waste heat boiler bottom, is further handled into gas liquor centrifugal station.When raw gas leaves the top of waste heat boiler
About 170 DEG C of temperature.
Conventionally, as high temperature rough gas is directly by water Quench, its temperature is too low, it is impossible to by-product high-pressure steam,
By-product low-pressure steam is only capable of, high-grade thermal waste is caused.
In addition, in the prior art, it is very big for carrying out the water of gas liquor of Quench and washing to high temperature rough gas,
The waste of water resource is caused, and also results in water pipeline complexity, increases cost.
In addition, in the prior art, most dust in raw gas all enter in waste liquid, cause subsequent separation process
It is complicated.
Utility model content
The purpose of this utility model aims to solve the problem that at least one aspect of the above-mentioned problems in the prior art and defect.
According to one side of the present utility model there is provided a kind of raw gas washing system, suitable for being discharged from gasification furnace
Raw gas is washed.The raw gas washing system includes：Dry dust removal apparatus, the raw gas for being connected to the gasification furnace goes out
Mouthful, for carrying out dry dust removal to the raw gas from the gasification furnace；And water washing device, for passing through dry dust removal
Raw gas is washed.
According to the embodiment of an exemplary of the present utility model, the raw gas washing system also includes Waste Heat Recovery and filled
Put, the waste heat recovery plant is connected to the raw gas outlet of the dry dust removal apparatus and the raw gas of the water washing device enters
Between mouthful, suitable for carrying out heat exchange by heat transferring medium and the raw gas.
According to the embodiment of another exemplary of the present utility model, the raw gas washing system also includes dust collection
Device, the dust collecting is connected to the dust outlet of the dry dust removal apparatus, for collecting from the dry dust removal
The dust of the dust outlet discharge of device.
According to the embodiment of another exemplary of the present utility model, the raw gas washing system also includes dust emission
Device, the dust emission device is connected to the dust outlet of the dust collecting, for receiving from the dust collection
The dust of the dust outlet discharge of device, is provided with the bottom of the dust emission device suitable for the dust received is discharged
To outside dust outlet.
According to the embodiment of another exemplary of the present utility model, the dry dust removal apparatus is cyclone separator, institute
Waste heat recovery plant is stated for waste heat boiler, the water washing device is scrubbing tower.
According to the embodiment of another exemplary of the present utility model, the heat transferring medium in the waste heat recovery plant is
Water.
According to the embodiment of another exemplary of the present utility model, the raw gas entrance of the dry dust removal apparatus is connected
Raw gas to the gasification furnace is exported, and the raw gas outlet of the dry dust removal apparatus is connected to the waste heat recovery plant
Raw gas entrance, the dust outlet of the dry dust removal apparatus is connected to the dust inlet of the dust collecting.
According to the embodiment of another exemplary of the present utility model, the raw gas outlet connection of the waste heat recovery plant
To the raw gas entrance of the water washing device；The waste heat recovery plant has the heat transferring medium for being used for inputting the heat transferring medium
Entrance and the heat transferring medium outlet for exporting the heat transferring medium.
According to the embodiment of another exemplary of the present utility model, the water washing device have the first washing water inlet,
The second washing water inlet positioned at the top of first washing water inlet, the raw gas positioned at the top of the water washing device go out
Mouth and the washing water out positioned at the bottom of the water washing device；Excessive gas liquor is sprayed into from first washing water inlet, is made
The raw gas water saturation is obtained, appropriate gas liquor is sprayed into from second washing water inlet, water saturated raw gas is entered
Water-filling is washed；Raw gas by washing is exported via the raw gas of the water washing device to be exported, the waste liquid warp produced after washing
Discharged by the washing water out of the water washing device.
According to the embodiment of another exemplary of the present utility model, the dust collecting is dust collection tank, institute
Dust emission device is stated for dust emission tank.
According to the embodiment of another exemplary of the present utility model, the dust collecting also has pressure relief opening and filled
Press mouth；The pressure relief opening is connected to the blowdown line of the coal lock of the gasification furnace, for being let out to the dust collecting
Pressure；The pressurising mouth is connected to the pressurising pipeline of the coal lock of the gasification furnace, for carrying out pressurising to the dust collecting.
According to the embodiment of another exemplary of the present utility model, the dust outlet of the bottom of the dust collecting
It is connected to the dust inlet at the top of the dust emission device；The dust emission device, which has, to be used to input inert gas
Inert gas entrance, before dust enters the dust emission device, is pre-filled with described in the dust emission device
Inert gas.
According to other side of the present utility model there is provided a kind of raw gas washing methods, comprise the following steps：S100：
Dry dust removal is carried out to the raw gas discharged from the gasification furnace；And S200：Water-filling is entered to the raw gas Jing Guo dry dust removal
Wash.
It is advanced to the raw gas discharged from gasification furnace in the embodiment according to each foregoing exemplary of the present utility model
Row dry dust removal, is then washed again.After dry dust removal, raw gas still keeps high temperature, therefore, it can utilize the height
Temperature rough gas by-product middle pressure steam, so as to improve the utilization ratio of energy.
In addition, in the embodiment according to each foregoing exemplary of the present utility model, what is produced after dry dust removal is dry
Dust without being handled, can direct Collection utilization, reduce the pressure of subsequent separation system.
In addition, in the embodiment according to each foregoing exemplary of the present utility model, dry dust removal is carried out to raw gas
When, it is not necessary to using gas liquor (or being washings), therefore, the consumption of washings is reduced, water resource and cost is saved,
And also enhance the clean result of raw gas, it is ensured that the quality of raw gas.
The description made by below with reference to accompanying drawing to the utility model, other objects and advantages of the present utility model will
It is clear that can simultaneously help to be fully understood by the utility model.
Brief description of the drawings
Fig. 1 shows the raw gas being suitable to being discharged from gasification furnace of the embodiment according to an exemplary of the present utility model
The schematic diagram of the raw gas washing system washed.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
In specification, same or analogous drawing reference numeral indicates same or analogous part.It is following real to the utility model referring to the drawings
The explanation for applying mode is intended to explain overall utility model design of the present utility model, and is not construed as to this practicality
A kind of new limitation.
In addition, in the following detailed description, for ease of explaining, elaborating many concrete details to provide to present disclosure
The comprehensive understanding of embodiment.It should be apparent, however, that one or more embodiments can also in the case of these no details
It is carried out.In other cases, known construction and device diagrammatically embodies to simplify accompanying drawing.
According to a general technical of the present utility model design there is provided a kind of raw gas washing system, suitable for from gasification
The raw gas that fire grate goes out is washed.The raw gas washing system includes：Dry dust removal apparatus, is connected to the gasification furnace
Raw gas is exported, for carrying out dry dust removal to the raw gas from the gasification furnace；And water washing device, for overdrying
The raw gas of formula dedusting is washed.
Fig. 1 shows the rough coal being suitable to being discharged from gasification furnace 3 of the embodiment according to an exemplary of the present utility model
The schematic diagram for the raw gas washing system that gas is washed.
As shown in figure 1, in the illustrated embodiment, the raw gas washing system mainly includes dry dust removal apparatus 5 and water
Cleaning device 9.Dry dust removal apparatus 5 is connected to the raw gas outlet 3b of gasification furnace 3, for entering to the raw gas from gasification furnace 3
Row dry dust removal.Water washing device 9 is used to wash the raw gas Jing Guo dry dust removal.
As shown in figure 1, in the illustrated embodiment, raw gas washing system also includes waste heat recovery plant 8, the used heat is returned
Receiving apparatus 8 is connected between the raw gas of dry dust removal apparatus 5 outlet 5b and the raw gas entrance 9a of water washing device 9, suitable for logical
Cross heat transferring medium and carry out heat exchange with raw gas.
As shown in figure 1, in the illustrated embodiment, raw gas washing system also includes dust collecting 6, the dust is received
Acquisition means 6 are connected to the dust outlet 5c of dry dust removal apparatus 5, for collecting the dust outlet 5c rows from dry dust removal apparatus 5
The dust gone out.
As shown in figure 1, in the illustrated embodiment, raw gas washing system also includes dust emission device 7, dust emission
Device 7 is connected to the dust outlet 6b of dust collecting 6, for receiving the dust outlet 6b discharges from dust collecting 6
Dust.The dust outlet 7b suitable for the dust received is discharged to the outside is provided with the bottom of dust emission device 7.
In the embodiment of an exemplary of the present utility model, as shown in figure 1, preceding dry dust arrester 5 can be
Cyclone separator, foregoing waste heat recovery plant 8 can be waste heat boiler, and foregoing water washing device 9 can be scrubbing tower.
In the embodiment of an exemplary of the present utility model, as shown in figure 1, changing in foregoing waste heat recovery plant 8
Thermal medium can be water.
As shown in figure 1, in the illustrated embodiment, the raw gas entrance 5a of dry dust removal apparatus 5 is connected to gasification furnace 3
Raw gas exports 3b, and the raw gas outlet 5b of dry dust removal apparatus 5 is connected to the raw gas entrance 8a of waste heat recovery plant 8, done
The dust outlet 5c of formula dust arrester 5 is connected to the dust inlet 6a of dust collecting 6.
As shown in figure 1, in the illustrated embodiment, the raw gas outlet 8b of waste heat recovery plant 8 is connected to water washing device 9
Raw gas entrance 9a；Waste heat recovery plant 8 has the heat transferring medium entrance 8c for being used for inputting heat transferring medium and changed for exporting
The heat transferring medium outlet 8d of thermal medium.
As shown in figure 1, in the illustrated embodiment, water washing device 9 has the first washing water inlet 9c, positioned at the first washing
Second washing water inlet 9d of water inlet 9c top, the raw gas positioned at the top of water washing device 9 export 9b and positioned at washing
The washing water out 9e of the bottom of device 9；Excessive gas liquor is sprayed into from the first washing water inlet 9c so that raw gas water saturation,
Appropriate gas liquor is sprayed into from the second washing water inlet 9d, water saturated raw gas is washed；By the rough coal of washing
Gas via water washing device 9 raw gas outlet 9b output, the waste liquid produced after washing via water washing device 9 washing water out
9e is discharged.
In the embodiment of an exemplary of the present utility model, as shown in figure 1, foregoing dust collecting 6 can be
Dust collection tank, foregoing dust emission device 7 can be dust emission tank.
As shown in figure 1, in the illustrated embodiment, dust collecting 6 also has pressure relief opening 6c and pressurising mouthful 6d；Pressure release
Mouth 6c is connected to the blowdown line of the coal lock 1,2 of gasification furnace 3, for carrying out pressure release to dust collecting 6；Pressurising mouthful 6d connections
Coal to gasification furnace 3 locks 1,2 pressurising pipeline, for carrying out pressurising to dust collecting 6.
As shown in figure 1, in the illustrated embodiment, the dust outlet 6b of the bottom of dust collecting 6 is connected to dust
The dust inlet 7a at the top of tapping equipment 7；Dust emission device 7 has the inert gas entrance for being used for inputting inert gas
7c, before dust enters dust emission device 7, inert gas is pre-filled with dust emission device 7.
In another embodiment of the present utility model, a kind of raw gas washing methods is also disclosed, comprises the following steps：
S100：Dry dust removal is carried out to the raw gas discharged from gasification furnace 3；With
S200：Raw gas Jing Guo dry dust removal is washed.
The generation of 1 detailed description raw gas and the technological process washed to raw gas below with reference to accompanying drawings.
As shown in figure 1, in the illustrated embodiment, the raw material lump coal of warehouse adds gasification furnace 3 by gravity at ambient pressure
Coal lock 1,2.Then, by pressurising pipeline to coal lock 1,2 pressurize so that coal lock 1,2 in feed coal enter transitional storehouse (not shown),
And from transitional storehouse is added to the top of gasification furnace 3.Moved from top to bottom from the entrance 3a of gasification furnace 3 feed coals entered, according to
Secondary to pass through preheating, drying, destructive distillation, gasification and combustion zone, the steaming oxygen mixture sprayed into the blowing air down mouthful from gasification furnace 3 is carried out
Burning and reaction, react after synthesis gas (or being raw gas) the up feed coal with gasification furnace generated fully exchanges heat from gas
The raw gas outlet 3b for changing stove 3 leaves.The cinder produced after burning is discharged to slag lock from the cinder outlet 3c of the bottom of gasification furnace 3
In 4, and it can be discharged to the outside from slag lock 4.
As shown in figure 1, in the illustrated embodiment, from the high temperature rough gas of the raw gas outlet 3b discharges of gasification furnace 3 from
The raw gas entrance 5a of dry dust removal apparatus 5, which enters in dry dust removal apparatus 5, carries out dry dust removal, is isolated from raw gas
A large amount of dust is discharged from the dust outlet 5c of the bottom of dry dust removal apparatus 5, and via the dust inlet 6a of dust collecting 6
Into in dust collecting 6.Raw gas by dry dust removal is arranged from the raw gas outlet 5b at the top of dry dust removal apparatus 5
Go out, and enter via the raw gas entrance 8a of waste heat recovery plant 8 in waste heat recovery plant 8, with changing in waste heat recovery plant 8
Thermal medium is exchanged heat, because in dry dust removal, raw gas is without cooling, and temperature is higher, therefore, it can fill Waste Heat Recovery
The heat transferring medium put in 8 is converted into middle pressure steam, i.e. can by-product middle pressure steam, take full advantage of the sensible heat of raw gas.Through useless
After heat reclamation device 8 cools, raw gas is discharged from the raw gas outlet 8b of waste heat recovery plant 8, and via the thick of water washing device 9
Gas entry 9a enters in water washing device 9.Then, excessive gas liquor is sprayed into from the first washing water inlet 9c of water washing device 9, made
Obtain raw gas water saturation.Afterwards, appropriate gas liquor is sprayed into from the second washing water inlet 9d of water washing device 9, to water saturation
Raw gas washed.Raw gas by washing is output to user via the raw gas outlet 9b at the top of water washing device 9
End.The waste liquid that washing is produced carries dissolved matter, condensate and a small amount of dust, and the waste liquid can washing from the bottom of water washing device 9
Water out 9e discharges are washed, coal gas water separation device (not shown) is entered, so as to further processing.
As shown in figure 1, in the illustrated embodiment, after the dust collected in dust collecting 6 reaches a certain amount of,
The valve V1 closed on the connecting line between dry dust removal apparatus 5 and dust collecting 6, and carried out using to coal lock 1,2
The blowdown line of pressure release carries out pressure release to dust collecting 6, when letting out normal pressure, opens dust collecting 6 and dust row
The valve V2 on the connecting line between device 7 is put, dust enters dust emission device 7 by gravity from dust collecting 6
In, then, the valve V2 closed between dust collecting 6 and dust emission device 7, and open the bottom of dust emission device 7
The dust outlet 7b in portion, so that the dry dust isolated from raw gas is externally discharged, the dry dust of discharge can be acted on
Boiler oil.
Note that valve V2 on the connecting line opened between dust collecting 6 and dust emission device 7 it
It is preceding, it is necessary to be pre-filled with inert gas 7 into dust emission device 7 via the inert gas entrance 7c on dust emission device 7,
For example, nitrogen or carbon dioxide, exploded to prevent a small amount of high temperature rough gas for accidentally entering in dust emission device 7.
Continuing with referring to Fig. 1, in the illustrated embodiment, the valve between dust collecting 6 and dust emission device 7
After door V2 is closed, pressurising is carried out to dust collecting 6 using 1, the 2 pressurising pipelines for carrying out pressurising are locked to coal, works as pressurising
To dry dust removal apparatus 5 operating pressure when, open the valve V1 between dry dust removal apparatus 5 and dust collecting 6, again
Carry out dust collection.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and this area
Technical staff can make improvements, the rushing in terms of not recurring structure or principle of the structure described in various embodiments
Independent assortment can be carried out in the case of prominent.
Although the utility model is illustrated with reference to accompanying drawing, the embodiment disclosed in accompanying drawing is intended to this practicality
New preferred embodiment is illustrative, and it is not intended that to a kind of limitation of the present utility model.
Although some embodiments of this overall utility model design are shown and illustrated, those of ordinary skill in the art will
Understand, in the case of the principle and spirit conceived without departing substantially from this overall utility model, these embodiments can be made a change, this
The scope of utility model is limited with claim and their equivalent.
It should be noted that word " comprising " is not excluded for other element or steps, word "a" or "an" is not excluded for multiple.Separately
Outside, any element label of claim should not be construed as limiting scope of the present utility model.
Claims (10)
1. a kind of raw gas washing system, suitable for being washed to the raw gas discharged from gasification furnace (3),
It is characterized in that：
The raw gas washing system includes：
Dry dust removal apparatus (5), is connected to the raw gas outlet (3b) of the gasification furnace (3), for from the gasification furnace
(3) raw gas carries out dry dust removal；With
Water washing device (9), for being washed to the raw gas Jing Guo dry dust removal.
2. raw gas washing system according to claim 1, it is characterised in that：
The raw gas washing system also includes waste heat recovery plant (8), and the waste heat recovery plant (8) is connected to the dry type
Between the raw gas outlet (5b) of dust arrester (5) and the raw gas entrance (9a) of the water washing device (9), suitable for passing through heat exchange
Medium carries out heat exchange with the raw gas.
3. raw gas washing system according to claim 2, it is characterised in that：
The raw gas washing system also includes dust collecting (6), and the dust collecting (6) is connected to the dry type
The dust outlet (5c) of dust arrester (5), for collecting the powder from dust outlet (5c) discharge of the dry dust removal apparatus (5)
Dirt.
4. raw gas washing system according to claim 3, it is characterised in that：
The raw gas washing system also includes dust emission device (7), and the dust emission device (7) is connected to the dust
The dust outlet (6b) of collection device (6), for receiving the powder from dust outlet (6b) discharge of the dust collecting (6)
Dirt,
The dust outlet suitable for the dust received is discharged to the outside is provided with the bottom of the dust emission device (7)
(7b)。
5. raw gas washing system according to claim 4, it is characterised in that：
The raw gas entrance (5a) of the dry dust removal apparatus (5) is connected to the raw gas outlet (3b) of the gasification furnace (3),
The raw gas outlet (5b) of the dry dust removal apparatus (5) is connected to the raw gas entrance of the waste heat recovery plant (8)
(8a),
The dust outlet (5c) of the dry dust removal apparatus (5) is connected to the dust inlet (6a) of the dust collecting (6).
6. raw gas washing system according to claim 5, it is characterised in that：
The raw gas outlet (8b) of the waste heat recovery plant (8) is connected to the raw gas entrance (9a) of the water washing device (9)；
The waste heat recovery plant (8), which has, to be used to input the heat transferring medium entrance (8c) of the heat transferring medium and for exporting
State the heat transferring medium outlet (8d) of heat transferring medium.
7. raw gas washing system according to claim 6, it is characterised in that：
The water washing device (9) has the first washing water inlet (9c), positioned at the top of first washing water inlet (9c)
Second washing water inlet (9d), the raw gas positioned at the top of the water washing device (9) export (9b) and positioned at the washing dress
Put the washing water out (9e) of the bottom of (9)；
Excessive gas liquor is sprayed into from first washing water inlet (9c) so that the raw gas water saturation, washed from described second
Wash water inlet (9d) and spray into appropriate gas liquor, water saturated raw gas is washed；
Raw gas by washing is via raw gas outlet (9b) output of the water washing device (9), and what is produced after washing is useless
Liquid is discharged via the washing water out (9e) of the water washing device (9).
8. raw gas washing system according to claim 4, it is characterised in that：
The waste heat recovery plant (8) is waste heat boiler, and the water washing device (9) is scrubbing tower；
The dust collecting (6) is dust collection tank, and the dust emission device (7) is dust emission tank.
9. raw gas washing system according to claim 4, it is characterised in that：
The dust collecting (6) also has pressure relief opening (6c) and pressurising mouthful (6d)；
The pressure relief opening (6c) is connected to the blowdown line of the coal lock (1,2) of the gasification furnace (3), for the dust collection
Device (6) carries out pressure release；
The pressurising mouthful (6d) is connected to the pressurising pipeline of the coal lock (1,2) of the gasification furnace (3), for the dust collection
Device (6) carries out pressurising.
10. raw gas washing system according to claim 4, it is characterised in that：
The dust outlet (6b) of the bottom of the dust collecting (6) is connected to the top of the dust emission device (7)
Dust inlet (7a)；
The dust emission device (7) has the inert gas entrance (7c) for being used for inputting inert gas, enters described in dust
Before dust emission device (7), the inert gas is pre-filled with the dust emission device (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621315574.9U CN206424723U (en) | 2016-12-02 | 2016-12-02 | Raw gas washing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621315574.9U CN206424723U (en) | 2016-12-02 | 2016-12-02 | Raw gas washing system |
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| Publication Number | Publication Date |
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| CN206424723U true CN206424723U (en) | 2017-08-22 |
Family
ID=59587310
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731375A (en) * | 2016-12-02 | 2017-05-31 | 上海泽玛克敏达机械设备有限公司 | raw gas washing system and method |
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2016
- 2016-12-02 CN CN201621315574.9U patent/CN206424723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731375A (en) * | 2016-12-02 | 2017-05-31 | 上海泽玛克敏达机械设备有限公司 | raw gas washing system and method |
| CN106731375B (en) * | 2016-12-02 | 2022-08-16 | 上海泽玛克敏达机械设备有限公司 | Raw gas scrubbing system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Erdos Energy Chemical Co., Ltd. Assignor: Shanghai Mindac Machinery & Equipment Co., Ltd. Contract record no.: 2018310000050 Denomination of utility model: Crude coal gas washing system and method Granted publication date: 20170822 License type: Common License Record date: 20181015 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Crude coal gas washing system and method Effective date of registration: 20191230 Granted publication date: 20170822 Pledgee: Lv Yangguang Pledgor: Shanghai Mindac Machinery & Equipment Co., Ltd. Registration number: Y2019310000049 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201027 Granted publication date: 20170822 Pledgee: Lv Yangguang Pledgor: SHANGHAI ZEMAG MINDAC MACHINERY EQUIPMENT Co.,Ltd. Registration number: Y2019310000049 |
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