CN105925314A - Pressurized conveying device and method for powdered coal - Google Patents
Pressurized conveying device and method for powdered coal Download PDFInfo
- Publication number
- CN105925314A CN105925314A CN201610257152.9A CN201610257152A CN105925314A CN 105925314 A CN105925314 A CN 105925314A CN 201610257152 A CN201610257152 A CN 201610257152A CN 105925314 A CN105925314 A CN 105925314A
- Authority
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- China
- Prior art keywords
- coal
- valve
- lock hopper
- deck
- coal lock
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
- C10J2300/0936—Coal fines for producing producer gas
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention relates to a pressurized conveying device and method for powdered coal. The device comprises a coal bunker, an upper coal lock hopper valve, an air relief valve, a coal lock hopper, a balancing valve B, a lower coal lock hopper valve and a coal charging bucket, wherein the coal bunker is located at the uppermost end of the entire device, the left side of the coal bunker is connected with a balancing valve A, the balancing valve A comprises a single disc E and is connected with the balancing valve B and the coal lock hopper, the lower end of the coal bunker is connected with the upper coal lock hopper valve, the upper coal lock hopper valve comprises a single disc A, the lower end of the upper coal lock hopper valve is connected with the coal lock hopper, the right side of the coal lock hopper is connected with the air relief valve, the left side of the coal lock hopper is connected with the balancing valve B, the coal lock hopper is connected with a pressurizing pipeline, the air relief valve comprises double discs A, and the balancing valve B comprises a single disc C; the lower end of the coal lock hopper is connected with the lower coal lock hopper valve, and the lower coal lock hopper valve comprises a single disc D; and both the balancing valve B and the lower coal lock hopper valve are connected with the coal charging bucket.
Description
Technical field
The invention belongs to pressurized delivered field, be specifically related to a kind of fine coal pressure conveyer device and method.
Background technology
Coal dust pressurized delivered is a kind of air flow bed technique, the technique delivering into gasification furnace with pressurization of dry pulverized coal,
Under the conditions of this technology high-voltage, production efficiency is high, and utilization of materials simple to operate is high, and combustible can process many flexibly
The advantage such as coal and living beings of kind.This system main Shu Mei workshop section valve has: upper coal lock hopper valve, lower coal lock hopper valve,
Balanced valve and relief valve.This matching requirements valve can reliably seal under High Pressure Difference, it is achieved high-pressure system is with low
Pressure system completely isolated；Can not occur building the pressure, valve can not be in action under High Pressure Difference；Valve pocket can not be because of
Solid accumulation affects valve normal switch.
Existing fine coal pressure conveyer device (includes the similar devices such as space flight stove, shell, GSP), coal
Balanced valve and coal lock hopper stop valve on lock hopper high-pressure balancing pipeline are all that double-valve-seat hard seal ball valve is installed in series
Configuration, the fault such as such configuration is easy to occur to build the pressure, bite.After the frequent appearance that builds the pressure is a series of
Continuous problem is such as: valve stem crack, connect deformation etc..Ball valve is higher to the required precision of sealing surface, and sealing surface is relatively
Narrow, abration position is fixed, and sealing surface easily occurs that penetrability leaks, thus causes serious internal leakage.
In recent years, moushroom valve, as the replacement valve of metal hard-sealing ball valve and dome valve, more and more should
Be used in frequently switch on, the occasion of serious wear.Life and reliability has been obtained for checking on actual condition.
Summary of the invention
It is an object of the invention to provide a kind of fine coal pressure conveyer device and method, effectively solve hard seal ball
Valve or dome valve occur the problem such as buildup, stuck, erosion under above-mentioned operating mode.
Technical scheme is as follows: a kind of fine coal pressure conveyer device, including coal bunker, upper coal lock hopper valve,
Atmospheric valve, coal lock hopper, balanced valve B, lower coal lock hopper valve, coal feedstock vessel, wherein coal bunker is positioned at whole device
Upper end, connecting balanced valve A on the left of it, balanced valve A include single-deck E, balanced valve A connecting balanced valve B and coal
Lock hopper, coal bunker lower end connects upper coal lock hopper valve, and upper coal lock hopper valve includes single-deck A, and upper coal lock hopper valve lower end connects
Coal lock hopper, connects atmospheric valve, left side connecting balanced valve on the right side of coal lock hopper, coal lock hopper connects pressurising pipeline, puts
Empty valve includes double plate A, and balanced valve includes single-deck C；Coal lock hopper lower end connects lower coal lock hopper valve, lower coal lock hopper
Valve includes single-deck D；Balanced valve and lower coal lock hopper valve are all connected with coal feedstock vessel, and wherein the structure of single-deck is for authorize
Patent ZL201110363050.2, the structure of double plate is patent ZL200920163663.X authorized.
Described balanced valve A includes single-deck E, single-deck F.
Described upper coal lock hopper valve includes single-deck A, single-deck B.
Described coal lock hopper passes on left high-pressure balancing pipeline connecting balanced valve.
Described balanced valve includes single-deck C, double plate B.
Described lower coal lock hopper valve includes single-deck D, double plate C.
The carrying method of a kind of fine coal pressure conveyer device, comprises the following steps:
Step one: in the case of being normal pressure in coal lock hopper, opens the single-deck E in balanced valve A；Open again
Single-deck A in coal lock hopper valve, coal dust enters in coal lock hopper from coal bunker, the most first closes in balanced valve A
Single-deck E, turns off single-deck A；
Step 2: by pressurising pipeline coal supply lock hopper pressurising, until in the pressure in coal lock hopper and coal feedstock vessel
Pressure close；
Step 3: first open the single-deck C in balanced valve, so that in the pressure in coal lock hopper and coal feedstock vessel
Pressure is equal to；
Step 4: first open the single-deck D in lower coal lock hopper valve, coal dust enters in coal feedstock vessel from coal lock hopper,
The most first close the single-deck C in balanced valve, turn off the single-deck D in lower coal lock hopper valve.
The carrying method of a kind of fine coal pressure conveyer device, comprises the following steps:
Step one: in the case of being normal pressure in coal lock hopper, opens the single-deck F in balanced valve A, then opens list
Dish E；Opening the single-deck B in coal lock hopper valve again, then open single-deck A, coal dust enters into coal lock from coal bunker
In bucket, the most first close the single-deck E in balanced valve A, turn off single-deck F；Turn off single-deck A, turn off
Single-deck B；
Step 2: by pressurising pipeline coal supply lock hopper pressurising, until in the pressure in coal lock hopper and coal feedstock vessel
Pressure close；
Step 3: first open the double plate B in balanced valve, then open single-deck C, so that the pressure in coal lock hopper
It is equal to the pressure in coal feedstock vessel；
Step 4: first opening the double plate C in lower coal lock hopper valve, then open single-deck D, coal dust enters from coal lock hopper
Enter in coal feedstock vessel, the most first close the single-deck C in balanced valve, turn off double plate B, turn off lower coal lock hopper
Single-deck D in valve, finally closes double plate C.
The remarkable result of the present invention is: avoid the phenomenon that builds the pressure, and eliminates the solid accumulation shadow to valve event
Ring, extend the use cycle, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is a kind of fine coal pressure conveyer device gas-solid high-pressure delivery schematic diagram of the present invention
Fig. 2 is a kind of fine coal pressure conveyer device gas-solid low-pressure delivery schematic diagram of the present invention
In figure: 1 coal bunker, coal lock hopper valve, 3 atmospheric valves, 4 coal lock hoppers, 5 balanced valve B, 6 times coal lock hoppers on 2
Valve, 7 coal feedstock vessel, 8 high-pressure balancing pipelines, 9 single-deck A, 10 single-deck B, 11 single-deck C, 12 single-deck D,
13 double plate A, 14 double plate B, 15 double plate C, 16 pressurising pipelines, 17 balanced valve A, 18 single-deck E, 19
Single-deck F
Detailed description of the invention
As it is shown in figure 1, a kind of fine coal pressure conveyer device.
Including coal bunker 1, upper coal lock hopper valve 2, atmospheric valve 3, coal lock hopper 4, balanced valve B5, lower coal lock hopper valve
6, coal feedstock vessel 7, wherein coal bunker 1 is positioned at whole device topmost, and connecting balanced valve A17 on the left of it is flat
Weighing apparatus valve A17 includes single-deck E18, single-deck F19, balanced valve A17 connecting balanced valve B5 and coal lock hopper 4, coal bunker
1 lower end connects upper coal lock hopper valve 2, and upper coal lock hopper valve 2 includes single-deck A9, single-deck B10, upper coal lock hopper valve 2
Lower end connects coal lock hopper 4, connects atmospheric valve 3, pass on left high-pressure balancing pipeline 8 and connect on the right side of coal lock hopper 4
Balanced valve 5, coal lock hopper 4 connects pressurising pipeline 16, and atmospheric valve 3 includes double plate A13, and balanced valve 5 includes
Single-deck C11, double plate B14；Coal lock hopper 4 lower end connects lower coal lock hopper valve 6, and lower coal lock hopper valve 6 includes single-deck
D12, double plate C15；Balanced valve 5 and lower coal lock hopper valve 6 are all connected with coal feedstock vessel 7, wherein single-deck A9, list
Dish B10, single-deck C11, single-deck D12, single-deck E18, the structure of single-deck F19 are the patent authorized
ZL201110363050.2, double plate A13, double plate B14, the structure of double plate C15 are the patent authorized
ZL200920163663.X。
A kind of fine coal pressurized delivered method, comprises the following steps:
Step one: in the case of being normal pressure in coal lock hopper 4, opens the single-deck 19F in balanced valve A17, then
Open single-deck 18E；Opening the single-deck B10 in coal lock hopper valve 2 again, then open single-deck A9, coal dust is from coal bunker
Enter in coal lock hopper 4 in 1, the most first close the single-deck E18 in balanced valve A17, turn off single-deck F19；
Turn off single-deck A9, turn off single-deck B10；
Step 2: by pressurising pipeline 16 coal supply lock hopper 4 pressurising, until the pressure in coal lock hopper 4 is given with coal
Pressure in batch can 7 is close；
Step 3: first open the double plate B14 in balanced valve 5, then open single-deck C11, so that coal lock hopper 4
Interior pressure is equal to the pressure in coal feedstock vessel 7；
Step 4: first open the double plate C15 in lower coal lock hopper valve 6, then open single-deck D12, coal dust is locked from coal
Bucket 4 enters in coal feedstock vessel 7, the most first closes the single-deck C11 in balanced valve 5, turn off double plate B14,
Turn off the single-deck D12 in lower coal lock hopper valve 6, finally close double plate C15.
As in figure 2 it is shown, a kind of fine coal pressure conveyer device, including coal bunker 1, upper coal lock hopper valve 2, atmospheric valve
3, coal lock hopper 4, balanced valve B5, lower coal lock hopper valve 6, coal feedstock vessel 7, wherein coal bunker 1 is positioned at whole dress
Putting topmost, connecting balanced valve A17 on the left of it, balanced valve A17 include that single-deck E18, balanced valve A17 connect
Balanced valve B5 and coal lock hopper 4, coal bunker 1 lower end connects upper coal lock hopper valve 2, and upper coal lock hopper valve 2 includes single-deck
A9, upper coal lock hopper valve 2 lower end connects coal lock hopper 4, connects atmospheric valve 3 on the right side of coal lock hopper 4, and left side connects flat
Weighing apparatus valve 5, atmospheric valve 3 includes double plate A13, and balanced valve 5 includes single-deck C11；Coal lock hopper 4 lower end connects
Lower coal lock hopper valve 6, lower coal lock hopper valve 6 includes single-deck D12；Balanced valve 5 and lower coal lock hopper valve 6 are all connected with coal
Feedstock vessel 7.
A kind of fine coal pressurized delivered method, comprises the following steps:
Step one: in the case of being normal pressure in coal lock hopper 4, opens the single-deck E18 in balanced valve A17；Again
Opening the single-deck A9 in coal lock hopper valve 2, coal dust enters in coal lock hopper 4 from coal bunker 1, the most first closes
Close the single-deck E18 in balanced valve A17, turn off single-deck A9；
Step 2: by pressurising pipeline 16 coal supply lock hopper 4 pressurising, until the pressure in coal lock hopper 4 is given with coal
Pressure in batch can 7 is close；
Step 3: first open the single-deck C11 in balanced valve 5, so that the pressure in coal lock hopper 4 and coal feed
Pressure equivalent in tank 7；
Step 4: first open the single-deck D12 in lower coal lock hopper valve 6, coal dust enters coal feed from coal lock hopper 4
In tank 7, the most first close the single-deck C11 in balanced valve 5, turn off the single-deck D12 in lower coal lock hopper valve 6.
Claims (8)
1. a fine coal pressure conveyer device, it is characterised in that: include coal bunker (1), upper coal lock hopper valve (2),
Atmospheric valve (3), coal lock hopper (4), balanced valve B (5), lower coal lock hopper valve (6), coal feedstock vessel (7), its
Middle coal bunker (1) is positioned at whole device topmost, connecting balanced valve A (17) on the left of it, balanced valve A (17)
Including single-deck E (18), balanced valve A (17) connecting balanced valve B (5) and coal lock hopper (4), coal bunker (1)
Lower end connects upper coal lock hopper valve (2), and upper coal lock hopper valve (2) includes single-deck A (9), upper coal lock hopper valve (2)
Lower end connects and connects atmospheric valve (3) on the right side of coal lock hopper (4), coal lock hopper (4), left side connecting balanced valve (5),
Coal lock hopper (4) connects pressurising pipeline (16), and atmospheric valve (3) includes double plate A (13), and balanced valve (5)
Including single-deck C (11)；Coal lock hopper (4) lower end connects lower coal lock hopper valve (6), and lower coal lock hopper valve (6) is wrapped
Include single-deck D (12)；Balanced valve (5) and lower coal lock hopper valve (6) are all connected with coal feedstock vessel (7), Qi Zhongdan
The structure of dish is patent ZL201110363050.2 authorized, and the structure of double plate is the patent authorized
ZL200920163663.X。
A kind of fine coal pressure conveyer device the most according to claim 1, it is characterised in that: described balanced valve
A (17) includes single-deck E (18), single-deck F (19).
A kind of fine coal pressure conveyer device the most according to claim 2, it is characterised in that: described upper coal is locked
Bucket valve (2) includes single-deck A (9), single-deck B (10).
A kind of fine coal pressure conveyer device the most according to claim 3, it is characterised in that: described coal lock hopper
(4) high-pressure balancing pipeline (8) connecting balanced valve (5) is passed on left.
A kind of fine coal pressure conveyer device the most according to claim 4, it is characterised in that: described balanced valve
(5) single-deck C (11), double plate B (14) are included.
A kind of fine coal pressure conveyer device the most according to claim 5, it is characterised in that: described lower coal is locked
Bucket valve (6) includes single-deck D (12), double plate C (15).
7. a carrying method for fine coal pressure conveyer device as claimed in claim 1, its characteristic is,
Comprise the following steps:
Step one: in the case of being normal pressure in coal lock hopper (4), opens the single-deck in balanced valve A (17)
E(18)；Opening the single-deck A (9) in coal lock hopper valve (2) again, coal dust enters into coal from coal bunker (1)
In lock hopper (4), the most first close the single-deck E (18) in balanced valve A (17), turn off single-deck A (9)；
Step 2: by pressurising pipeline (16) coal supply lock hopper (4) pressurising, until the pressure in coal lock hopper (4)
Power is close with the pressure in coal feedstock vessel (7)；
Step 3: first open the single-deck C (11) in balanced valve (5), so that the pressure in coal lock hopper (4)
Power is equal to the pressure in coal feedstock vessel (7)；
Step 4: first open the single-deck D (12) in lower coal lock hopper valve (6), coal dust enters from coal lock hopper (4)
Enter in coal feedstock vessel (7), the most first close the single-deck C (11) in balanced valve (5), turn off lower coal lock
Single-deck D (12) in bucket valve (6).
8. a carrying method for fine coal pressure conveyer device as claimed in claim 6, its characteristic is,
Comprise the following steps:
Step one: in the case of being normal pressure in coal lock hopper (4), opens the single-deck in balanced valve A (17)
F (19), then open single-deck E (18)；Open the single-deck B (10) in coal lock hopper valve (2) again, then beat
Opening single-deck A (9), coal dust enters in coal lock hopper (4) from coal bunker (1), the most first closes balanced valve A (17)
In single-deck E (18), turn off single-deck F (19)；Turn off single-deck A (9), turn off single-deck B (10)；
Step 2: by pressurising pipeline (16) coal supply lock hopper (4) pressurising, until in coal lock hopper (4)
Pressure is close with the pressure in coal feedstock vessel (7)；
Step 3: first open the double plate B (14) in balanced valve (5), then open single-deck C (11), thus
The pressure in coal lock hopper (4) is made to be equal to the pressure in coal feedstock vessel (7)；
Step 4: first open the double plate C (15) in lower coal lock hopper valve (6), then open single-deck D (12), coal
Powder enters in coal feedstock vessel (7) from coal lock hopper (4), the most first closes the single-deck C in balanced valve (5)
(11), turn off double plate B (14), turn off the single-deck D (12) in lower coal lock hopper valve (6), finally close
Close double plate C (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257152.9A CN105925314A (en) | 2016-04-22 | 2016-04-22 | Pressurized conveying device and method for powdered coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257152.9A CN105925314A (en) | 2016-04-22 | 2016-04-22 | Pressurized conveying device and method for powdered coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105925314A true CN105925314A (en) | 2016-09-07 |
Family
ID=56836036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610257152.9A Pending CN105925314A (en) | 2016-04-22 | 2016-04-22 | Pressurized conveying device and method for powdered coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105925314A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201437848U (en) * | 2009-07-07 | 2010-04-14 | 北京航天动力研究所 | Axial balanced type disc valve |
| CN103113925A (en) * | 2013-02-20 | 2013-05-22 | 上海锅炉厂有限公司 | Powdered coal pressure dense-phase conveying device and method of dry coal dust pressure gasification |
| CN102384279B (en) * | 2011-11-16 | 2013-06-26 | 北京航天动力研究所 | Single-disk valve |
| CN203144352U (en) * | 2013-02-20 | 2013-08-21 | 上海锅炉厂有限公司 | Pulverized coal pressurizing dense phase conveying device for pressurizing and gasifying pulverized coal |
| CN104194839A (en) * | 2014-09-01 | 2014-12-10 | 中科合成油工程有限公司 | Method for delivering powdered coal to pressurized gasification furnace in pressurized manner |
| CN104479753A (en) * | 2014-12-09 | 2015-04-01 | 贵州开阳化工有限公司 | Pulverized coal conveying device and method |
| CN204918502U (en) * | 2015-08-27 | 2015-12-30 | 成都高科达科技有限公司 | A energy recuperation system for buggy pressurization and feed arrangement |
| CN105398824A (en) * | 2015-11-24 | 2016-03-16 | 山东润银生物化工股份有限公司 | Pulverized coal alternative transformation automatic conveying device and method |
-
2016
- 2016-04-22 CN CN201610257152.9A patent/CN105925314A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201437848U (en) * | 2009-07-07 | 2010-04-14 | 北京航天动力研究所 | Axial balanced type disc valve |
| CN102384279B (en) * | 2011-11-16 | 2013-06-26 | 北京航天动力研究所 | Single-disk valve |
| CN103113925A (en) * | 2013-02-20 | 2013-05-22 | 上海锅炉厂有限公司 | Powdered coal pressure dense-phase conveying device and method of dry coal dust pressure gasification |
| CN203144352U (en) * | 2013-02-20 | 2013-08-21 | 上海锅炉厂有限公司 | Pulverized coal pressurizing dense phase conveying device for pressurizing and gasifying pulverized coal |
| CN104194839A (en) * | 2014-09-01 | 2014-12-10 | 中科合成油工程有限公司 | Method for delivering powdered coal to pressurized gasification furnace in pressurized manner |
| CN104479753A (en) * | 2014-12-09 | 2015-04-01 | 贵州开阳化工有限公司 | Pulverized coal conveying device and method |
| CN204918502U (en) * | 2015-08-27 | 2015-12-30 | 成都高科达科技有限公司 | A energy recuperation system for buggy pressurization and feed arrangement |
| CN105398824A (en) * | 2015-11-24 | 2016-03-16 | 山东润银生物化工股份有限公司 | Pulverized coal alternative transformation automatic conveying device and method |
Non-Patent Citations (1)
| Title |
|---|
| 胡庆斌: "单盘阀在SCGP粉煤加压与输送单元的应用", 《煤化工》 * |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170118 Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Applicant after: Beijing Aerospace Petrochemical Technology and Equipment Engineering Corporation Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Applicant before: Beijing Aerospace Propulsion Institute |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |