CN207313422U - A kind of innocuity disposal system of domestic sludge - Google Patents
A kind of innocuity disposal system of domestic sludge Download PDFInfo
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- CN207313422U CN207313422U CN201721240974.2U CN201721240974U CN207313422U CN 207313422 U CN207313422 U CN 207313422U CN 201721240974 U CN201721240974 U CN 201721240974U CN 207313422 U CN207313422 U CN 207313422U
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Abstract
The utility model belongs to Solid Waste Treatment technical field, and in particular to a kind of innocuity disposal system of domestic sludge.A kind of harmless domestic sludge processing system, including the pretreatment system of dehydration pretreatment, the negative-pressure cyclic accumulation of heat incineration system that burning disposal is carried out to mixing sludge, slag treatment system and the flue gas purification system that gas cleaning processing is carried out to flue gas are carried out to domestic sludge.The processing system, system Construction expense is few, and operating cost is low, opens up a new way for the harmless treatment and comprehensive utilization of resources of domestic sludge.
Description
Technical field
The utility model belongs to Solid Waste Treatment technical field, and in particular to a kind of harmless treatment system of domestic sludge
System.
Background technology
Domestic sludge, also referred to as sewage plant sludge, municipal sludge, are with the increase of municipal sewage treatment amount and long-term, steady
Sludge that is fixed, largely producing, there are following three features：First, the content of organic matter is high, typically constitutes from the 50% of its contents on dry basis
More than, while also containing nutriments such as substantial amounts of nitrogen phosphorus；Second, since sewage plant also receives some industrial wastewaters, its sludge
In also contain a certain proportion of heavy metal ion and chemical substance, particularly containing a certain amount of harmful chemical, can such as inhale
Attached property organic halogen, anion synthetic detergent etc., and substantial amounts of pathogenic microorganism；3rd, moisture content is high, and is dehydrated tired
Difficulty, 80% or so, wet combustion calorific value substantially reduces the domestic sludge moisture content that general sewage treatment plant produces, can not effective profit
With its organic matter.
At present, the processing method of domestic sludge includes following four technology：1) Landfill, not only causes substantial amounts of soil
Waste, and there are secondary pollution；2) aerobic compost, it is necessary to conserve drying evaporation moisture, occupied ground is more, and transformation time compared with
It is long, equally also pollute the environment；3) burn, but directly not only equipment investment is big, operation cost is higher for burning, and there are bioxin etc.
The problem of toxic gas discharges, and waste of energy.
The content of the invention
The purpose of this utility model is to provide a kind of innocuity disposal system of domestic sludge, this system Construction expense is few,
Operating cost is low and sustainable operation, and a new way is opened for the harmless treatment and comprehensive utilization of resources of domestic sludge
Footpath.
To realize above-mentioned purpose of utility model, the utility model provides following technical scheme：
A kind of innocuity disposal system of domestic sludge, including the pretreatment system of dehydration pretreatment is carried out to domestic sludge
System, carry out mixing sludge the negative-pressure cyclic accumulation of heat incineration system of burning disposal, slag treatment system and carry out flue gas to flue gas
The flue gas purification system of purified treatment, it is characterised in that the pretreatment system includes：First batch mixer, filter press, for mixing
Second batch mixer of even mud cake, biomass carbon and chaff shell, multiple weighing balances and storage bin, wherein, the first batch mixer, filter press and
Second batch mixer passes sequentially through conveying arrangement and is connected.
This pretreatment system is so run, and sludge enters the first batch mixer, and sludge is mixed with adjusting material, then transport to
Filter press, carries out filter-press dehydration and obtains mud cake, and mud cake and leavening agent carried out secondary mixed mixing sludge, mixing sludge into
Enter negative-pressure cyclic accumulation of heat incineration system.The effect of aluminium polychloride is that quenched dehydration is played to sludge, makes to reach in steel band filter press
To more preferable dehydrating effect, the effect of lime is to carry out desulfurization process to sludge；Before press filtration, aluminium polychloride and stone are only added
Ash, avoiding directly adding leavening agent increases press filtration volume, meanwhile, this time press filtration only needs the water content of sludge is left from 80%
The right side is down to 60%, reduce further the difficulty and energy consumption of press filtration.Dewatered sludge, moisture content reduce, and viscosity reduces, again
Material is looser when being mixed, and is mixed with combustion adjuvant and leavening agent, reduces the moisture content of mixing sludge again, improves
The combustion heat value of sludge, secondary mixing it also avoid in press filtration due to lime, domestic sludge and aluminium polychloride property with and
The lamination of generation, makes material mixing more uniform, is more advantageous to the abundant burning of mixing sludge.
Preferably, first batch mixer (13) is used to mix domestic sludge, lime and aluminium polychloride, and described second is mixed
Material machine is used to mix mud cake, biomass carbon and chaff shell.
This pretreatment system is so run, and sludge enters the first batch mixer, and sludge is mixed with lime, aluminium polychloride
Close, then transport to filter press, carry out filter-press dehydration and obtain mud cake, mud cake and biomass carbon and chaff shell progress is secondary mixed
Mixing sludge, mixing sludge enter negative-pressure cyclic accumulation of heat incineration system.The effect of aluminium polychloride is that quenched take off is played to sludge
Water, makes to reach more preferable dehydrating effect in steel band filter press, and the effect of lime is to carry out desulfurization process to sludge；Before press filtration, only
Aluminium polychloride and lime are added, avoiding disposably adding chaff shell and biomass carbon increases press filtration volume, meanwhile, this time press
Filter only needs the water content of sludge being down to 60% from 80% or so, reduce further the difficulty and energy consumption of press filtration.It is dewatered
Sludge, moisture content reduce, and viscosity reduces, and material is looser when being mixed again, is mixed with chaff shell, biomass carbon,
Reduce the moisture content of mixing sludge again, improve the combustion heat value of sludge, secondary mixing it also avoid in press filtration due to lime,
Domestic sludge and aluminium polychloride property with and the lamination that produces, make material mixing more uniform, it is dirty to be more advantageous to mixing
The abundant burning of mud.
Preferably, first batch mixer is double-shaft spiral batch mixer or colter batch mixer, and second batch mixer is double
Axis spiral mixer or colter batch mixer, the filter press are steel band type filter press or plate and frame filter press.
Preferably, second batch mixer be double-shaft spiral batch mixer described in filter press be steel band type filter press.
Preferably, the innocuity disposal system of the domestic sludge further include to the innocuity disposal system of domestic sludge into
Row monitoring and the central control system of control.
Preferably, the negative-pressure cyclic accumulation of heat incineration system, including：There is cloth section, preheating section, section of lighting a fire successively, burn
Burn the incinerator of section and cooling section；Smoke circulating device above incineration section；Distribution device above cloth section and positioned at pre-
Hot arc, igniting section, incineration section and the extractor fan of cooling, the incinerator further include：Preheating cover, igniting above preheating section
The igniter of Duan Shangfang, the burning trolley that can be moved freely in cloth section, preheating section, igniting section, incineration section and cooling section and pre-
Warm-up cycle gas inlet on heat cover, the import of the warm-up cycle flue gas be used for the circulating flue gas from incineration section into
Enter.
The flue gas that the import of warm-up cycle flue gas produces burning enters preheating section, using the heat that burning produces to mixing
Sludge has carried out predrying, reduces the water content of mixing sludge, is conducive to it and fully burns, avoids mixing sludge and lighting a fire
Stage rests on low-temperature zone for a long time, weakens the temperature environment to form bioxin.
Preferably, the lower end of the distribution device is equipped with material scattering device.
Material scattering device can break up mixing sludge, loosely uniformly spread out, and be conducive to the abundant burning of mixing sludge.
Preferably, the smoke circulating device includes single or multiple independent flue gas covers, has circulating flue gas in flue gas cover
Import and air intlet, the extractor fan include three or more than three independent draught hoods, exhausting are connected with draught hood
Pipe, exhaust column are equipped with air pump；Draught hood is connected with first flue gas cover above incineration section below igniting section, position
Last draught hood below incineration section is connected with preheating cover, the draught hood below cooling section and gas cleaning system
System is connected.The circulating flue gas import makes the smoke secondary that burning produces be burned into incinerator, and air intlet makes air
Pouring in incinerator helps sludge fully to burn.Smoke circulating device is conducive to remove imperfect combustion in combustion product gases
Granulated carbon, carbon monoxide and organic matter, and carry out second-time burning, are particularly advantageous to remove the bioxin for burning and producing, make its
Decomposed under high temperature, while also recycled the heat for burning and producing.
Preferably, the slag treatment system is used to residue carrying out brickmaking, potting grain.
Preferably, the flue gas purification system includes heat exchanger, cyclone separator, desulfurizing tower, denitrating tower, carbonated drink point successively
From device, active carbon adsorber.
Heat exchanger will burn the flue gas heat exchange produced, is sent by air-introduced machine and flue dust is removed into sack cleaner, dedusting effect
Rate reaches more than 98%；Flue gas carries out spray sulphur removal by desulfurizing tower, and spray liquid is sodium hydroxide solution, and sodium hydroxide can be with
Sulfur dioxide in flue gas forms sodium sulfite, and sodium sulfite can by regenerating sodium hydroxide with calcium hydroxide reaction, from
And can realize that sodium hydroxide obtains circular regeneration, sulfur removal effectiveness Danone enough 60%, while spray liquid can also remove remaining flue dust；
Exhaust gas enters wet denitration tower after desulfurization, by spraying urea liquid and controlling solution PH to be reduced into the nitrogen oxides in flue gas
Nitrogen, can remove in flue gas more than 80% NOx；Flue gas after denitration is sent into steam-water separator, the cigarette in steam-water separator
Water in gas is separated can be used for the preparation of aluminium polychloride after collection, realize the secondary use of water；Flue gas passes through work
Property charcoal absorber, by activated carbon adsorption remove flue gas may remaining heavy metal, make flue gas up to standard.
The method for innocent treatment and system of domestic sludge provided by the utility model, have the advantage that：
1. employing the dehydration pretreatment system of secondary mixing, press filtration difficulty and energy consumption to domestic sludge are reduced, into
The abundant burning for making material mixing more uniform, being conducive to mixing sludge of one step；
2. negative-pressure cyclic accumulation of heat incineration system carries out burning disposal to sludge, the heat of sludge incineration generation is taken full advantage of
Amount, the flue gas produced to sludge incineration have carried out secondary use, have reduced the moisture content of mixing sludge, weaken bioxin generation
Temperature environment.
3. employing smoke circulating device, the flue gas produced to sludge incineration has carried out second-time burning, reduces in flue gas
The generation of pollutant, reduces the generation of pollutant, and flue gas is made flue gas reach discharge standard, realized by smoke processing system
Harmless treatment to sludge.
4. system Construction expense is few, operating cost is low, is opened up for the harmless treatment and comprehensive utilization of resources of domestic sludge
One new approach.
Brief description of the drawings
Fig. 1：Pretreatment system structure diagram.
In figure, 1- pretreatment systems, 11- storage bins, 12- weighing balances, the first batch mixers of 13-, 14- steel band types filter press,
The second batch mixers of 15-, 16- conveying arrangements.
Fig. 2：Negative-pressure cyclic accumulation of heat incineration system structure diagram.
In figure, 2- negative-pressure cyclic accumulation of heat incineration system；20- incinerators, 200- clothes section, 201- preheating sections, 202- points
Fiery section, 203- incineration sections, 204- cooling sections, 205- igniters, 206- preheatings cover, 207- warm-up cycles gas inlet, 208- are burnt
Burn trolley；21- distribution devices, 210- material scattering devices；22- smoke circulating devices, the import of 220-circulating flue gas, 221-air into
Mouth, 222-flue gas cover；23-extractor fan, 230-draught hood, 231- exhaust columns, 232- air pumps；3- slag treatment systems；4-
Flue gas purification system
Embodiment
The utility model is further detailed below in conjunction with the accompanying drawings.
Embodiment 1
Referring to Fig. 1-2, a kind of innocuity disposal system of domestic sludge, including dehydration pretreatment is carried out to domestic sludge
Pretreatment system 1, carry out mixing sludge the negative-pressure cyclic accumulation of heat incineration system 2 of burning disposal, slag treatment system 3, to cigarette
Gas carries out the flue gas purification system 4 of gas cleaning processing and the innocuity disposal system of domestic sludge is monitored and controlled
Central control system (not indicating)；The pretreatment system 1 includes：For mixing domestic sludge, lime and aluminium polychloride
The first batch mixer 13, the filter press 14 for press filtration sludge, the second batch mixer for mixing mud cake, biomass carbon and chaff shell
15, multiple weighing balances 12 and storage bin 11, wherein, the first batch mixer 13,14 and second batch mixer 15 of filter press are sequentially connected and connect,
First and second batch mixer 13,15 is specially double-shaft spiral batch mixer, and filter press 14 is steel band type filter press；The negative-pressure cyclic stores
Thermal incineration system 2 includes：There is cloth section 200, preheating section 201, igniting section 202, incineration section 203 and cooling section 204 successively
Incinerator 20；The smoke circulating device 22 of the top of incineration section 203；The distribution device 21 of the top of cloth section 200 and positioned at preheating
Section 201, igniting section 202, incineration section 203 and the extractor fan 23 of cooling, the incinerator 20 further include：On preheating section 201
Warm-up cycle gas inlet 207 on the preheating cover of side, the igniter 205 and preheating cover 206 of 202 top of igniting section, it is described pre-
The import of thermal cycle flue gas is used for the entrance of the circulating flue gas from incineration section 203；Smoke circulating device 22 includes single or more
A independent flue gas cover 222, has circulating flue gas import 220 and air intlet 221, the circulating flue gas import in flue gas cover 222
220 smoke secondaries for producing burning are burned into incinerator 20, and air intlet 221 makes air pour in incinerator 20
Sludge is helped fully to burn；The extractor fan 23 includes single or multiple independent draught hoods 230, is connected on draught hood 230
There is exhaust column 231, exhaust column 231 is equipped with air pump 232；The flue gas purification system 4 includes heat exchanger, cyclonic separation successively
Device, desulfurizing tower, denitrating tower, steam-water separator, active carbon adsorber；The slag treatment system 3 carries out brickmaking, system with by residue
Haydite.
The innocuity disposal system of the domestic sludge so works, by weighing balance 12 by domestic sludge, lime
Weigh, transport to 13 batch mixing of the first batch mixer in mass ratio with aluminium polychloride, stir evenly to obtain mixed once sludge, once mix
Close sludge to transport to filter press 14 after preliminary hydro-extraction, moisture content is changed into 68-73%, kinematic viscosity 10000-11000 centipoises.
Enter back into higher-pressure region to continue to be dehydrated to obtain mud cake, the moisture content of mud cake is reduced to 60% or so, 10500-11000 lis of kinematic viscosity
Pool.Based on domestic sludge original quality, biomass carbon dust and chaff shell are weighed, is made with mud cake by 15 batch mixing of batch mixer and mixes dirt
Mud.Mixing sludge is transported to distribution device 21, the material scattering device 210 of 21 lower end of distribution device, which breaks up mixing sludge, makes it
Loose equably to spread out on trolley 208 is burned, the thickness of the bed of material is 700mm.Burn trolley 208 and slide into preheating section 201, this
When, flue gas that the burning of incineration section 203 produces by extractor fan 23 is evacuated to preheating section 201, and (at this time, whole system is normally opened, more
A burning trolley 208 in preheating, igniting, burning and cooling stage is respectively positioned at cloth section 200, preheating section 201, igniting section
202nd, incineration section 203 and cooling section 204), predrying to material progress, after the completion of dry, material transportation is opened to section 202 of lighting a fire
Begin to light a fire to material upper strata, firing temperature is 800-900 DEG C, and the duration of ignition is 3-5 minutes, and at this time, extractor fan 23 is from igniting
The lower section of section 202 extracts igniting and produces the flue gas of imperfect combustion generation, and is delivered to incineration section 203, makes flue gas secondary combustion,
Meanwhile section 202 of lighting a fire forms subnormal ambient, the bed of material starts to burn from top to bottom, and material is delivered to incineration section 203, incineration section 203
Temperature is 800-1000 DEG C, and after the completion of burning, incineration residue is delivered to cooling section 204, and temperature is down to 300-800 DEG C.After cooling,
Residue is transported to slag treatment system 3, and residue is prepared into haydite or brick, this section of flue gas enters flue gas purification system 4, successively into
Enter heat exchanger, cyclone separator, desulfurizing tower, denitrating tower, steam-water separator, active carbon adsorber.The flue gas produced is burned to enter
Heat exchanger exchanges heat, and is sent afterwards by air-introduced machine to cyclone separator and removes flue dust by mesh bag, efficiency of dust collection more than 98%, is removed
Flue gas after dirt carries out spray sulphur removal into desulfurizing tower, and spray liquid is sodium hydroxide solution, sodium hydroxide can with flue gas
Sulfur dioxide forms sodium sulfite, and sodium sulfite can be by regenerating sodium hydroxide, so as to can realize with calcium hydroxide reaction
Sodium hydroxide obtains circular regeneration, and sulfur removal effectiveness is up to 60%, while spray liquid can also remove remaining flue dust；After desulfurization exhaust gas into
Enter denitrating tower wet denitration, it is real by spraying urea liquid and controlling solution PH that the nitrogen oxides in flue gas is reduced into nitrogen
The purpose of existing denitration, the method can remove in flue gas more than 80% NOx；Flue gas after denitration is sent into steam-water separator, in vapour
Water in separator in flue gas is separated can be used for the preparation of aluminium polychloride after collection；Hereafter, flue gas passes through work
Property charcoal absorber, by activated carbon adsorption remove flue gas may remaining heavy metal and bioxin, make flue gas up to standard.
First and second batch mixer 13,15 in embodiment 1 can use colter batch mixer to substitute, and steel band type filter press can use sheet frame
Filter press substitutes.
The indices of the incineration residue produced to processing system processing are detected, the equal energy of residue of embodiment 1-4
Reach following standards, residue moisture content ＜ 1%, loss on ignition≤50%.Residue pollutant concentration is referring to table 1, Hygienic Index ginseng
It is shown in Table 2.
1 pollutant concentration of table
2 Hygienic Index of table
| Sequence number | Item controlled | Limit value |
| 1 | Excrement colibacillus group bacterium value | <0.01 |
| 2 | Induced worm egg death rate | ＞ 95% |
Claims (9)
1. a kind of innocuity disposal system of domestic sludge, including the pretreatment system of dehydration pretreatment is carried out to domestic sludge
（1）, to mixing sludge carry out burning disposal negative-pressure cyclic accumulation of heat incineration system（2）, slag treatment system（3）With to flue gas into
The flue gas purification system of row gas cleaning processing（4）, it is characterised in that the pretreatment system（1）Including：First batch mixer
（13）, filter press（14）, for mixing mud cake, the second batch mixer（15）, multiple weighing balances（12）And storage bin（11）, wherein,
First batch mixer（13）, filter press（14）With the second batch mixer（15）Pass sequentially through conveying arrangement（16）It is connected.
2. processing system as claimed in claim 1, it is characterised in that first batch mixer（13）For mix domestic sludge,
Lime and aluminium polychloride, second batch mixer are used to mix mud cake, biomass carbon and chaff shell.
3. processing system as claimed in claim 2, it is characterised in that first batch mixer（13）For double-shaft spiral batch mixer or
Colter batch mixer, second batch mixer（15）For double-shaft spiral batch mixer or colter batch mixer, the filter press（14）For steel
Belt filter press or plate and frame filter press.
4. processing system as claimed in claim 3, it is characterised in that first batch mixer is double-shaft spiral batch mixer, described
Filter press is steel band type filter press, and second batch mixer is twin axle spiral mixer.
5. the innocuity disposal system of domestic sludge as described in claim any one of 1-4, it is characterised in that the negative-pressure cyclic
Accumulation of heat incineration system（2）, including：There is cloth section successively（200）, preheating section（201）, igniting section（202）, incineration section（203）
And cooling section（204）Incinerator（20）；Incineration section（203）The smoke circulating device of top（22）；Cloth section（200）Top
Distribution device（21）With positioned at preheating section（201）, igniting section（202）, incineration section（203）With the extractor fan of cooling（23）,
The incinerator（20）Further include：Preheating section（201）The preheating cover of top（206）, igniting section（202）The igniter of top
（205）, can be in cloth section（200）, preheating section（201）, igniting section（202）, incineration section（203）And cooling section（204）Freely move
Dynamic burning trolley（208）Covered with preheating（206）On warm-up cycle gas inlet（207）, the warm-up cycle flue gas into
Mouth is used to come from incineration section（203）Circulating flue gas entrance.
6. the innocuity disposal system of domestic sludge as claimed in claim 5, it is characterised in that the smoke circulating device（22）
Including single or multiple independent flue gas covers（22）, flue gas cover（22）It is upper that there is circulating flue gas import（220）With circulating flue gas import
（221）, the extractor fan（23）Including three or more than three independent draught hoods（230）, draught hood（230）On be connected with
Exhaust column（231）, exhaust column（231）It is equipped with air pump（232）；Positioned at igniting section（202）Lower section draught hood（230）With burning
Section（203）First flue gas cover of top（22）It is connected, positioned at incineration section（203）Last draught hood of lower section（230）
Covered with preheating（206）It is connected, positioned at cooling section（204）The draught hood of lower section（230）With flue gas purification system（4）It is connected.
7. the innocuity disposal system of domestic sludge as claimed in claim 5, it is characterised in that the flue gas purification system（4）
Include heat exchanger, cyclone separator, desulfurizing tower, denitrating tower, steam-water separator, active carbon adsorber successively.
8. the innocuity disposal system of domestic sludge as described in claim any one of 6-7, it is characterised in that the domestic sludge
Innocuity disposal system further include the innocuity disposal system of domestic sludge is monitored and controlled center control system
System.
9. the innocuity disposal system of any one of the claim 6-7 domestic sludges, it is characterised in that the distribution device
（21）Lower end be equipped with material scattering device（210）.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721240974.2U CN207313422U (en) | 2017-09-26 | 2017-09-26 | A kind of innocuity disposal system of domestic sludge |
| PCT/CN2018/100155 WO2019062350A1 (en) | 2017-09-26 | 2018-08-13 | Harmless treatment method and system for domestic sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721240974.2U CN207313422U (en) | 2017-09-26 | 2017-09-26 | A kind of innocuity disposal system of domestic sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207313422U true CN207313422U (en) | 2018-05-04 |
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ID=62384122
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721240974.2U Active CN207313422U (en) | 2017-09-26 | 2017-09-26 | A kind of innocuity disposal system of domestic sludge |
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| Country | Link |
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| CN (1) | CN207313422U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473564A (en) * | 2017-09-26 | 2017-12-15 | 重庆盎瑞悦科技有限公司 | The method for innocent treatment and system of a kind of domestic sludge |
| CN109502941A (en) * | 2018-12-28 | 2019-03-22 | 重庆盎瑞悦科技有限公司 | Cooperate with cement plant using the method for self- propagating pyrolysis installation processing sludge |
| WO2019062350A1 (en) * | 2017-09-26 | 2019-04-04 | 重庆盎瑞悦科技有限公司 | Harmless treatment method and system for domestic sludge |
-
2017
- 2017-09-26 CN CN201721240974.2U patent/CN207313422U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473564A (en) * | 2017-09-26 | 2017-12-15 | 重庆盎瑞悦科技有限公司 | The method for innocent treatment and system of a kind of domestic sludge |
| WO2019062350A1 (en) * | 2017-09-26 | 2019-04-04 | 重庆盎瑞悦科技有限公司 | Harmless treatment method and system for domestic sludge |
| CN107473564B (en) * | 2017-09-26 | 2023-08-29 | 重庆盎瑞悦科技有限公司 | Harmless treatment method and system for domestic sludge |
| CN109502941A (en) * | 2018-12-28 | 2019-03-22 | 重庆盎瑞悦科技有限公司 | Cooperate with cement plant using the method for self- propagating pyrolysis installation processing sludge |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Innocent treatment system of life mud Effective date of registration: 20190424 Granted publication date: 20180504 Pledgee: Bank of China Limited Chongqing Dadukou Branch Pledgor: CHONGQING ANGRUIYUE SCIENCE AND TECHNOLOGY CO., LTD. Registration number: 2019500000012 |
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| 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: 20210127 Granted publication date: 20180504 Pledgee: Bank of China Limited Chongqing Dadukou Branch Pledgor: CHONGQING ANGRUIYUE SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: 2019500000012 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |