CN103537140A - Improvement method for air use of vertical disk filter - Google Patents
Improvement method for air use of vertical disk filter Download PDFInfo
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- CN103537140A CN103537140A CN201210270663.6A CN201210270663A CN103537140A CN 103537140 A CN103537140 A CN 103537140A CN 201210270663 A CN201210270663 A CN 201210270663A CN 103537140 A CN103537140 A CN 103537140A
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Abstract
In production, the air pressure of a vertical disk filter system is relatively lowered to affect the normal production along with the increase of yield of aluminum oxide; in addition, a low-pressure machine frequently stops to interrupt air supply, so that a material is precipitated in the vertical disk filter and an air pipe is blocked to cause production accidents. An improvement method provided by the invention comprises the following steps: 1, increasing the air supply pipe diameter of a vertical disk, namely, additionally connecting a pipe to the vertical disk filter on a main pipeline; 2, additionally arranging a high and low-pressure air intercommunication valve, connecting a pipeline to a low-pressure air master pipeline on a high-pressure air pipe with relatively massive sufficient air supply and mounting an electric valve at the junction of the pipeline and the low-pressure air master pipeline, connecting a controller to an operating room, immediately starting the electric valve in the operating room to connect high-pressure air into a low-pressure air supply pipe network to supply air for 5-10min when the low-pressure machine abruptly stops, closing after a standby low-pressure machine is started to supply the air normally so as to guarantee that a stirring air pipe of the vertical disk is not blocked and guarantee the stable operation of production. The method can solve the technological problem of air supply of a single low-pressure machine, guarantees the normal air use of the vertical disk filter and guarantees the stable and high production.
Description
Technical field
The present invention relates to filter technical field, the improving one's methods of especially a kind of Air-usage of Vertical Pan Filter.
Background technology
In Chalco Company Shanxi Branch aluminium oxide one subsidiary factory, adopt in the process of producing aluminium oxide by bayer, slurries after kind minute is decomposed are through cyclone classification, overflow, be sent to vertical-disk filter and carry out seed filtration, its filter cake mixes and send seed precipitation tank, filtrate to send evaporimeter to concentrate with Bayer process slurries as seed.This factory's vertical-disk filter specification is GP2-240, and filter area is 245m
2, adopt the low-pressure air of pressure more than 0.20MPa as power carry out material stirring, filter cake blows off.Aborning, along with the increase of aluminium oxide output, at least 6 of current vertical-disk filters are also opened, and system wind pressure is on the low side, and impact is normally produced.In addition, frequently there is stop jumping in low press, and air feed interrupts, and material precipitation, airduct in vertical-disk filter are stopped up, and causes production accident.Therefore, vertical-disk filter is analyzed and researched with airduct net, propose rational modification scheme very necessary.
Vertical-disk filter is to use wind rich and influential family, about 240m
3/ min, account for 70% left and right of total blast volume, but its caliber is less than normal, is 20.32cm(8 inch) pipe, thus cause vertical plate not enough with wind, blast is on the low side.
Low press separate unit air feed, when making operational factor surpass setting value or instrument misoperation because having a power failure, the unexpected stop jumping of equipment, whole pipe network system can, in instantaneous loss of pressure blowing-out, affect user and normally produce.Particularly vertical-disk filter stirs by blast, and because of it, admittedly expecting content is 400g/L ~ 700g/L, after stirring stops, causing very soon material precipitation, and stop up airduct, affects normal production.
Summary of the invention
In order to overcome that vertical-disk filter vertical plate is not enough with wind, blast is on the low side and the normal deficiency of producing of impact during the unexpected stop jumping of equipment, the invention provides improving one's methods of a kind of Air-usage of Vertical Pan Filter.
The technical solution adopted for the present invention to solve the technical problems is: one, strengthen vertical plate air feed caliber, on Trunk Line, connect a pipe to vertical-disk filter again; Two, solve the low press air feed of separate unit defect, during design, increase high and low pressure wind communicating valve, on the comparatively sufficient high-pressure air hose of wind supply quantity, connect a pipeline to low-pressure air main pipe line, and in its access place, one electrically operated valve is installed, controller access operation chamber, when the unexpected stop jumping of low press, can start at once electrically operated valve at operating room, high-pressure blast is accessed to low pressure air feed pipe network, and air feed 5min ~ 10min can close after standby low press unlatching air feed is normal, to guarantee that vertical plate stirs airduct and do not stop up, guarantee the stable operation of producing.
The invention has the beneficial effects as follows: can solve the defective workmanship of the low press air feed of separate unit, guarantee the just conventional wind of vertical-disk filter, guarantee stable and high yields.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is Air-usage of Vertical Pan Filter sketch.
In figure: the pipe that 1, caliber is 20.32cm, 2, the caliber pipe that is 5.08cm, 3, that caliber is 20.32cm is total for airduct, 4, the newly-increased caliber pipeline that is 20.32cm.
The specific embodiment
Take Chalco Company Shanxi Branch aluminium oxide one subsidiary factory, to adopt the process of producing aluminium oxide by bayer be example, totally 8 of the vertical-disk filters that it adopts, every guarantees air feed by 4 5.08cm pipes, count 32 5.08cm pipes (2), these 32 5.08cm pipes (2) are separated by 4 20.32cm pipes (1) again, total about 240m of required airflow
3/ min.Now entering vertical plate, always to supply airduct (3) caliber be 20.32cm, when high yield, air feed is not enough, can on Trunk Line, connect again a 20.32cm pipe (4) to vertical-disk filter, can meet 8 vertical plates completely and open required air quantity, as shown in Figure 1, dotted line is newly-increased pipeline (4) to Air-usage of Vertical Pan Filter sketch.
Low press is in operation and inevitably there will be unexpected stop jumping, with prestissimo, also needs 5min could open stand-by equipment, during cause vertical plate to stir airduct obstruction, need to stop and process, impact is normally produced.For this reason, during design, can increase high and low pressure wind communicating valve, on the comparatively sufficient aluminium hydroxide concentrated phase conveying high-pressure airduct of wind supply quantity, connecing a 15.24cm(6 inch) pipeline is to low-pressure air pipeline, and in its access place, one electrically operated valve is installed, controller access operation chamber, when the unexpected stop jumping of low press, can start at once electrically operated valve at operating room, high-pressure blast is accessed to low pressure air feed pipe network, and air feed 5min ~ 10min closes after standby low press unlatching air feed is normal, to guarantee that vertical plate stirs airduct and do not stop up, guarantee stable the carrying out producing.
Such scheme industry technical staff can realize by industry technology means.
Claims (1)
1. improving one's methods of an Air-usage of Vertical Pan Filter, improves the problem occurring in Air-usage of Vertical Pan Filter process, it is characterized in that: one, strengthen vertical plate air feed caliber, on Trunk Line, connect a pipe to vertical-disk filter again; Two, solve the low press air feed of separate unit defect, during design, increase high and low pressure wind communicating valve, on the comparatively sufficient high-pressure air hose of wind supply quantity, connect a pipeline to low-pressure air main pipe line, and in its access place, one electrically operated valve is installed, controller access operation chamber, when the unexpected stop jumping of low press, can start at once electrically operated valve at operating room, high-pressure blast is accessed to low pressure air feed pipe network, air feed 5min ~ 10min can close after standby low press unlatching air feed is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210270663.6A CN103537140A (en) | 2012-08-01 | 2012-08-01 | Improvement method for air use of vertical disk filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210270663.6A CN103537140A (en) | 2012-08-01 | 2012-08-01 | Improvement method for air use of vertical disk filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103537140A true CN103537140A (en) | 2014-01-29 |
Family
ID=49961231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210270663.6A Pending CN103537140A (en) | 2012-08-01 | 2012-08-01 | Improvement method for air use of vertical disk filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103537140A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267983A (en) * | 2016-08-30 | 2017-01-04 | 洛阳宝诺重型机械有限公司 | A kind of novel vertical-disk filter cake discharge blowing shunting pressurized construction |
| CN106865585A (en) * | 2017-03-17 | 2017-06-20 | 中铝国际工程股份有限公司 | Alumina producing low pressure wind system |
-
2012
- 2012-08-01 CN CN201210270663.6A patent/CN103537140A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267983A (en) * | 2016-08-30 | 2017-01-04 | 洛阳宝诺重型机械有限公司 | A kind of novel vertical-disk filter cake discharge blowing shunting pressurized construction |
| CN106267983B (en) * | 2016-08-30 | 2018-06-12 | 洛阳宝诺重型机械有限公司 | A kind of vertical-disk filter cake discharge blowing shunting pressurized construction |
| CN106865585A (en) * | 2017-03-17 | 2017-06-20 | 中铝国际工程股份有限公司 | Alumina producing low pressure wind system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |