CN201206835Y - Sludge treatment system utilizing pulverized coal boiler of power station - Google Patents
Sludge treatment system utilizing pulverized coal boiler of power station Download PDFInfo
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- CN201206835Y CN201206835Y CNU2008200853057U CN200820085305U CN201206835Y CN 201206835 Y CN201206835 Y CN 201206835Y CN U2008200853057 U CNU2008200853057 U CN U2008200853057U CN 200820085305 U CN200820085305 U CN 200820085305U CN 201206835 Y CN201206835 Y CN 201206835Y
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- pulverized coal
- coal boiler
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- rotary type
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- 239000010802 sludge Substances 0.000 title claims abstract description 78
- 239000003245 coal Substances 0.000 title claims abstract description 42
- 238000001035 drying Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000002910 solid waste Substances 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 11
- 239000008187 granular material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
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- 230000006872 improvement Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
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- 230000002411 adverse Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000006227 byproduct Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
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- 238000003672 processing method Methods 0.000 description 1
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- 239000010801 sewage sludge Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The utility model relates to a solid waste harmless and resource treatment system, aiming to provide a sludge treatment system which uses a power plant pulverized coal-fired boiler. The system comprises a sludge dryer, an incinerator and a coal mill; the coal mill is connected with the dryer and the incinerator through conveying belts respectively; the sludge dryer is a spirally rotary-type sludge drying and molding machine which comprises a shell body; at least a hollow heat shaft connected with a transmission mechanism is arranged inside the shell body; the hollow heat shaft is provided with a plurality of hollow blades; both ends of the hollow heat shaft are respectively provided with heat carrier inlets which pass through the shell body from the middle part of the hollow heat shaft to educe heat carrier outlets; the upper part of one end of the shell body is provided with a wet material inlet, while the lower part of the other end is provided with a product outlet; a jacket is arranged on the shell body; and a steam inlet and a condensate water outlet are arranged on the jacket. The sludge treatment system can make full use of the heat value of the sludge, and the sludge volume is reduced by more than 90% after treatment, with fast effects.
Description
Technical field
The utility model relates to a kind of solid waste harmless resource utilization treatment system, and more particularly, the utility model relates to a kind of sludge treating system that utilizes generating plant pulverized coal boiler.
Background technology
Along with the quickening of Urbanization in China and the reinforcement of urban infrastructure construction, treatment rate of domestic sewage progressively improves, and has supervened a large amount of excess sludges.If these mud can not obtain in time, effective and stable treated, will bring great hidden danger for the safety of China's regional environment and people's lives.Because historical reasons, there is the thought of " the light mud of heavy water " in China always in the process of building sewage treatment plant, and the processing of mud is disposed and do not obtained due attention.Industrial process such as papermaking in addition,, chemical industry and pharmacy and rivers and lakes dredging etc. also can produce a large amount of mud.The harmless treatment of mud become in the urban science evolution must solution great environmental issue.
The main disposal options of mud is agricultural, landfill and burning.China's Treatment of Sludge technology is at present based on agricultural and landfill.But mud is used for the agricultural problem safe in utilization that the most important thing is.Owing to contain a large amount of malignant bacterias in the mud, enrichment heavy metal, and in dehydration, added chemical agent again, so the effect of sludge manure and innocuousness wait further research.For landfill, owing to contain a large amount of harmful substances in the mud, also have the water content height, easily stop up shortcoming such as landfill yard percolating pipe, so that a lot of local refuse landfills have forbidden admitting sewage sludge.Disposal options such as employing compost that has and brickmaking, but because some specification requirements of environment and construction quality aspect are difficult to satisfy, also can't implement ambient controlled on a large scale and dispose.
The processing method that with the burning is core is thorough, the quick and the most economic method of present sludge treatment, it can make the whole carbonizations of organic matter, can reduce sludge volume (subtract and hold 90%) to greatest extent, can be electric energy or heat energy with the power conversion in the bed mud simultaneously, turn waste into wealth, mud is fully utilized.
Sludge incineration is divided into direct burning and dry back is burned two kinds.The direct burning of mud is that high humidity (moisture content is more than 80%) mud is directly burned in incinerator under the situation of auxiliary fuel as thermal source.Because wet sludge moisture content is big, calorific value is low; need to consume a large amount of auxiliary fuels; exhaust gas volumn after the burning is also bigger; follow-up vent gas treatment needs huge equipment; operation control difficulty is big, particularly mixes to burn a large amount of wet mud the safe operation and the environmental protection of equipment brought very adverse effect on existing coal-burning boiler.Therefore consider from comprehensive aspect that mud adopts dry in advance turning sludge into fuel scheme to have obvious advantage.Mud will act as a fuel, and must develop unique dry technology and combustion technology, makes low-calorie mud be transformed into the available fuel of higher calorific value, by incinerator sludge fuel is carried out clean burning then.
Drying and moulding to wet mud in the prior art are generally multiple step format, for example in the oven dry rotary kiln, send into disintegrating apparatus after the oven dry and pulverize the acquisition mud granule, this process need is set up rotary kiln and disintegrating apparatus, and simultaneously rotary kiln also needs the heating facility that provides extra, and whole cost is higher.
The sludge incineration technology is used at present more many thoraxes formula, swinging and the fluid bed etc. of mainly containing.But the device of a newly-built cover sludge drying and burning, must comprise a complete set of system of sludge drying thermal source, incinerator and tail gas clean-up, the investment price is relatively more expensive comparatively speaking, and the construction period is also longer, some city is because the land resource anxiety, and it is very big to build new special use disposal engineering difficulty.
And surrounding city often has the thermal power plant, mud is directly mixed existing power plant coal-powder boiler to be burned, do not need extra increasing to burn and tail gas treatment device, do not need original combustion system is carried out big transformation yet, greatly reduce the investment and the operating cost of Treatment of Sludge, therefore utilizing the sludge incineration treatment system of generating plant pulverized coal boiler is a up-and-coming sludge treating system.
The utility model content
The purpose of this utility model is to provide a kind of sludge treating system that utilizes generating plant pulverized coal boiler.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of sludge treating system that utilizes generating plant pulverized coal boiler comprises sludge drier, incinerator, also comprises coal pulverizer, and coal pulverizer is connected with incinerator with drying machine respectively by conveyer belt; Described sludge drier is a spiral and rotary type sludge drying shaping apparatus, this spiral and rotary type sludge drying shaping apparatus comprises housing, the hollow hot box of at least one connection transmission mechanism is installed in its inside, some hollow blades are set on the hollow hot box, the two ends of hollow hot box connect the heat carrier import respectively, pass housing by hollow hot box middle part and draw heating medium outlet; A wet stock import is established on the top of housing one end, and a products export is established in other end bottom; On the described housing chuck is set, steam inlet and condensation-water drain are set on the chuck.
As a kind of improvement of the present utility model, the hollow hot box of described spiral and rotary type sludge drying shaping apparatus is two.
As a kind of improvement of the present utility model, the blade of described spiral and rotary type sludge drying shaping apparatus is a wedge shape, and tilts to be installed on the hollow hot box.
As a kind of improvement of the present utility model, the blade of described spiral and rotary type sludge drying shaping apparatus is the propeller type blade.
As a kind of improvement of the present utility model, air inlet and exhaust outlet are set also on the housing of described spiral and rotary type sludge drying shaping apparatus.
As a kind of improvement of the present utility model, described incinerator is a generating plant pulverized coal boiler; Mud is sent into coal pulverizer and is ground after the sludge drier drying, the mixture after will grinding is then sent into the generating plant pulverized coal boiler burning disposal.
Compared with prior art, the beneficial effects of the utility model are:
(1) drying shaping apparatus will wet mud drying and moulding is disposable finishes, and equipment investment is saved along with the sludge drying degree is more and more littler in the drying machine space;
(2) utilize the low-grade steam turbine steam that has done work in the power plant that mud is carried out drying, fully energy savings;
(3) mud is made the graininess shaped fuel, helped further grinding and burning;
(4) with the calorific value that can make full use of behind the mud granule turning sludge into fuel in the mud, sludge drying is handled the back volume and is subtracted appearance more than 90%, has important use for the extremely urgent city sewage and sludge handling problem of solution China and is worth.
(5) do not need extra increasing to burn and fume treatment auxiliary, can utilize existing electric power factory equipment, reduce investment outlay greatly and cost.
Description of drawings
Fig. 1 is the process chart among the embodiment in the utility model.
Fig. 2 is the spiral and rotary type sludge drying shaping apparatus structural representation in the utility model;
Fig. 3 is the spiral and rotary type sludge drying shaping apparatus cross-sectional view in the utility model;
Fig. 4 is the hollow hot box structural representation of the spiral and rotary type sludge drying shaping apparatus in the utility model;
Fig. 5 is the wedge shape blade structural representation of the spiral and rotary type sludge drying shaping apparatus in the utility model;
Fig. 6 is the wedge shape blade structural representation of the spiral and rotary type sludge drying shaping apparatus in the utility model;
Among the figure: 1-W type cell body; 2-hollow hot box; 3-loam cake; 4-bearing and stuffing box; 5-chuck; 6-wedge shape blade; 7-gear; 8 adjust and reduce quick-mounting puts; 9-swivel joint; 10-sprocket wheel.
The specific embodiment
With reference to the accompanying drawings, below in conjunction with embodiment the utility model is described in detail.
A kind of sludge treating system that utilizes generating plant pulverized coal boiler comprises sludge drier, incinerator, also comprises coal pulverizer, and coal pulverizer is connected with incinerator with drying machine respectively by conveyer belt; Described sludge drier is a spiral and rotary type sludge drying shaping apparatus, and the hollow hot box 2 of two connection transmission mechanisms is installed in this spiral and rotary type sludge drying shaping apparatus inside, and some hollow wedge shape blades 6 are set on the hollow hot box 2, and its inside communicates.The two ends of hollow hot box 2 connect the heat carrier import respectively, pass housing by hollow hot box 2 middle parts and draw heating medium outlet; Wedge shape blade 6 tilts to be installed on the hollow hot box 2, and incline direction makes the mud material to move to the discharging direction under wedge shape blade 6 promotes, and can certainly adopt the blade of propeller type blade or other shapes.Make-up machine housing top is a loam cake 3, and loam cake 3 one ends are established a wet stock import, and a products export is established in housing other end bottom.Air inlet that feeds dry air and the exhaust outlet of discharging humid gas also are set on the housing.Chuck 5 is set on the housing, steam inlet and condensation-water drain are set on the chuck 5.The inboard of chuck 5 forms and two W type cell bodies 1 that hollow hot box 2 adapts.This spiral and rotary type sludge drying shaping apparatus, transmission mechanism comprise swivel joint 9, sprocket wheel 10, adjust and reduce that quick-mounting puts 8, gear 7, bearing and stuffing box 4, and swivel joint 9 is connected with the motor equal power device.
Incinerator is a generating plant pulverized coal boiler; Mud is sent into coal pulverizer and is ground after the sludge drier drying, the mixture after will grinding is then sent into the generating plant pulverized coal boiler burning disposal.
Utilize the function mode of sludge treating system of generating plant pulverized coal boiler as follows:
(1) mud that will wet is made into the mud granule of moisture content 20%～40%, granularity 1～5mm;
(2) mud granule of first step gained being sent into coal pulverizer with bunker coal grinds;
(3) mixture that grinds of the second step gained is sent into generating plant pulverized coal boiler and carried out burning disposal.
Specific embodiment 1:
With treating capacity is that 300 tons/day mud shaped fuel burning project is an example, and the specific embodiment of the present utility model is described.
After 300 tons of/day original wet mud (moisture content 85%) are transported to power plant, be stacked at airtight primary sludge and stack warehouse.Be transported to the drying sludge factory building by sludge pump and pipeline.Mud adopts 2 spiral and rotary type sludge drying shaping apparatus to carry out drying, and the wet mud handling capacity of every drying machine is 150 tons/day.Drying sludge becomes that moisture content is about 40%, granularity is that mud granule about 1mm is as grain forming fuel.Be made in the step of mud granule at the mud that will wet, the low-grade steam after the work done of use steam turbine heats wet mud.Dried mud granule is delivered to the dewatered sludge storehouse by belt or other conveying devices.Mud granule in the dewatered sludge storehouse mixes by original coal conveyer belt with the bunker coal of indoor coal storage yard sends into the stokehold coal bunker.Fuel combination in the coal bunker of stokehold is admitted to the original coal pulverizer of power plant, enters pulverized-coal fired boiler by coal burner and burns.Technological process as shown in Figure 1.Wherein first link can adopt belt or pumping; Second link also can adopt conveying equipments such as strand cage.
The method of operation of spiral and rotary type sludge drying shaping apparatus is as follows: the saturated vapor after the acting of employing steam turbine is as heating thermal source, pressure 0.4～0.8MPa, 175 ℃ of temperature.From the saturated vapor of boiler from steam inlet enter housing chuck 5, enter hollow hot box 2 and wedge blade 6 from the heat carrier import, fuselage, hollow hot box 2 and wedge shape blade 6 are heated simultaneously, in the mode of conduction heating mud is carried out heat drying.The wet mud that is dried is sent into drying machine quantitatively continuously by the wet stock import, after mud enters fuselage, rotation by wedge blade 6 makes the mud upset, stirs, bring in constant renewal in the heating interface, fully contact with wedge blade 6 with heated fuselage, fully heated, made the contained surface moisture evaporation of mud.Simultaneously, mud is carried to the products export direction with the rotation of sharf, continues to stir in conveying, makes the moisture that oozes out in the mud continue evaporation.At last, the mud of uniform drying is discharged by products export.In this process, a small amount of boiler tail flue gas is introduced drying shaping apparatus, the water vapour that constantly produces in the drying sludge process is taken away.Flue gas enters from air inlet, discharges from exhaust outlet.After the saturated vapor heat exchange condensation, by condensation-water drain discharge carrying out reuse.
Specific embodiment 2:
In the present embodiment, the moisture content of wet mud is 80%, and handling the sludge ball particle moisture content that obtains is 30%, and granularity is 3mm, and other implementation steps are identical with embodiment 1.
Specific embodiment 3:
In the present embodiment, the moisture content of wet mud is 75%, and handling the sludge ball particle moisture content that obtains is 20%, and granularity is 5mm, and other implementation steps are identical with embodiment 1.
At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above examples of implementation, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (6)
1, a kind of sludge treating system that utilizes generating plant pulverized coal boiler comprises sludge drier, incinerator, it is characterized in that, also comprises coal pulverizer, and coal pulverizer is connected with incinerator with drying machine respectively by conveyer belt; Described sludge drier is a spiral and rotary type sludge drying shaping apparatus, this spiral and rotary type sludge drying shaping apparatus comprises housing, the hollow hot box of at least one connection transmission mechanism is installed in its inside, some hollow blades are set on the hollow hot box, the two ends of hollow hot box connect the heat carrier import respectively, pass housing by hollow hot box middle part and draw heating medium outlet; A wet stock import is established on the top of housing one end, and a products export is established in other end bottom; On the described housing chuck is set, steam inlet and condensation-water drain are set on the chuck.
2, the sludge treating system that utilizes generating plant pulverized coal boiler according to claim 1 is characterized in that, the hollow hot box of described spiral and rotary type sludge drying shaping apparatus is two.
3, the sludge treating system that utilizes generating plant pulverized coal boiler according to claim 1 is characterized in that, the blade of described spiral and rotary type sludge drying shaping apparatus is a wedge shape, and tilts to be installed on the hollow hot box.
4, the sludge treating system that utilizes generating plant pulverized coal boiler according to claim 1 is characterized in that, the blade of described spiral and rotary type sludge drying shaping apparatus is the propeller type blade.
5, the sludge treating system that utilizes generating plant pulverized coal boiler according to claim 1 is characterized in that, air inlet and exhaust outlet also are set on the housing of described spiral and rotary type sludge drying shaping apparatus.
6, the sludge treating system that utilizes generating plant pulverized coal boiler according to claim 1 is characterized in that, described incinerator is a generating plant pulverized coal boiler; Mud is sent into coal pulverizer and is ground after the sludge drier drying, the mixture after will grinding is then sent into the generating plant pulverized coal boiler burning disposal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200853057U CN201206835Y (en) | 2008-04-03 | 2008-04-03 | Sludge treatment system utilizing pulverized coal boiler of power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200853057U CN201206835Y (en) | 2008-04-03 | 2008-04-03 | Sludge treatment system utilizing pulverized coal boiler of power station |
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| CN201206835Y true CN201206835Y (en) | 2009-03-11 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748923A (en) * | 2012-07-01 | 2012-10-24 | 王号德 | Method for drying coal slime |
| CN103411412A (en) * | 2013-07-13 | 2013-11-27 | 苏州市自力化工设备有限公司 | Brown coal drying machine |
| CN103808125A (en) * | 2013-11-19 | 2014-05-21 | 浙江天石纳米科技有限公司 | Propeller blade connecting structure of drying machine |
| CN104089470A (en) * | 2014-07-10 | 2014-10-08 | 邓大贵 | Energy-saving environmentally friendly material drying device |
| CN104315844A (en) * | 2014-11-15 | 2015-01-28 | 郭金良 | Process for producing brick by waste heat drying sludge from sintered brick production line tunnel kiln |
| CN104422265A (en) * | 2013-08-29 | 2015-03-18 | 双龙集团有限公司 | Flat-paddle drying machine and flat-paddle drying method |
| CN105157394A (en) * | 2015-07-21 | 2015-12-16 | 苏州市自力化工设备有限公司 | Pharmacy mushroom dreg harmless treatment system |
| CN105972610A (en) * | 2016-05-30 | 2016-09-28 | 戴道国 | Collaborative mixed burning method for large-scale treatment |
| CN106179684A (en) * | 2016-08-29 | 2016-12-07 | 童杨益 | A kind of toothed disc type large volume wood waste material charcoal make-up machine |
| JP2021032442A (en) * | 2019-08-21 | 2021-03-01 | 新東工業株式会社 | Agitation dryer |
| CN113625796A (en) * | 2021-08-06 | 2021-11-09 | 唐山市宝凯科技有限公司 | Spiral conveying dual-effect evaporation coal material humidity adjusting device and online humidity control method |
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2008
- 2008-04-03 CN CNU2008200853057U patent/CN201206835Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748923B (en) * | 2012-07-01 | 2014-07-02 | 王号德 | Method for drying coal slime |
| CN102748923A (en) * | 2012-07-01 | 2012-10-24 | 王号德 | Method for drying coal slime |
| CN103411412A (en) * | 2013-07-13 | 2013-11-27 | 苏州市自力化工设备有限公司 | Brown coal drying machine |
| CN104422265A (en) * | 2013-08-29 | 2015-03-18 | 双龙集团有限公司 | Flat-paddle drying machine and flat-paddle drying method |
| CN103808125A (en) * | 2013-11-19 | 2014-05-21 | 浙江天石纳米科技有限公司 | Propeller blade connecting structure of drying machine |
| CN104089470A (en) * | 2014-07-10 | 2014-10-08 | 邓大贵 | Energy-saving environmentally friendly material drying device |
| CN104089470B (en) * | 2014-07-10 | 2015-11-25 | 邓大贵 | A kind of energy saving and environment friendly material drying device |
| CN104315844A (en) * | 2014-11-15 | 2015-01-28 | 郭金良 | Process for producing brick by waste heat drying sludge from sintered brick production line tunnel kiln |
| CN105157394A (en) * | 2015-07-21 | 2015-12-16 | 苏州市自力化工设备有限公司 | Pharmacy mushroom dreg harmless treatment system |
| CN105157394B (en) * | 2015-07-21 | 2018-06-12 | 苏州美泓环保科技有限公司 | Pharmacy bacterium dregs innocent processing system |
| CN105972610A (en) * | 2016-05-30 | 2016-09-28 | 戴道国 | Collaborative mixed burning method for large-scale treatment |
| CN106179684A (en) * | 2016-08-29 | 2016-12-07 | 童杨益 | A kind of toothed disc type large volume wood waste material charcoal make-up machine |
| CN106179684B (en) * | 2016-08-29 | 2018-05-15 | 童杨益 | A kind of toothed disc type large volume wood waste material charcoal make-up machine |
| JP2021032442A (en) * | 2019-08-21 | 2021-03-01 | 新東工業株式会社 | Agitation dryer |
| CN113625796A (en) * | 2021-08-06 | 2021-11-09 | 唐山市宝凯科技有限公司 | Spiral conveying dual-effect evaporation coal material humidity adjusting device and online humidity control method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20110403 |