CN107998976B - Alkali liquor preparation system - Google Patents
Alkali liquor preparation system Download PDFInfo
- Publication number
- CN107998976B CN107998976B CN201711050331.6A CN201711050331A CN107998976B CN 107998976 B CN107998976 B CN 107998976B CN 201711050331 A CN201711050331 A CN 201711050331A CN 107998976 B CN107998976 B CN 107998976B
- Authority
- CN
- China
- Prior art keywords
- alkali
- preparation
- tank
- alkali liquor
- conveying pipe
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
- B01F35/833—Flow control by valves, e.g. opening intermittently
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
- B01F23/452—Mixing liquids with liquids; Emulsifying using flow mixing by uniting flows taken from different parts of a receptacle or silo; Sandglass-type mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
- B01F33/811—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles in two or more consecutive, i.e. successive, mixing receptacles or being consecutively arranged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/2201—Control or regulation characterised by the type of control technique used
- B01F35/2202—Controlling the mixing process by feed-back, i.e. a measured parameter of the mixture is measured, compared with the set-value and the feed values are corrected
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/82—Forming a predetermined ratio of the substances to be mixed by adding a material to be mixed to a mixture in response to a detected feature, e.g. density, radioactivity, consumed power or colour
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Non-Electrical Variables (AREA)
- Paper (AREA)
Abstract
The invention discloses an alkali liquor preparation system, and belongs to the technical field of feed agent equipment. It comprises a liquid alkali tank, an evaporation tank, a primary alkali preparation tank, a secondary alkali preparation tank, two preparation devices and a plurality of conveying pipes; the alkali liquor preparation system comprises two steps of preparing alkali liquor and gradually adjusting the concentration of the alkali liquor; in each stage of preparation process, liquid alkali or alkaline water and steam condensate water simultaneously enter a preparation device for precise preparation. According to the invention, the alkaline water is prepared by two times, so that the final concentration of the alkaline water is accurate and meets the process requirements. The low-concentration alkali liquor has the minimum damage to pipelines and equipment in the transportation process.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of feed agent equipment, and particularly relates to preparation of an alkali liquor applied to a settling workshop.
[ background of the invention ]
At present, the conveying process of the flocculant alkali liquor is generally carried out by a branch pipe of a conveying pipeline of an alkali liquor replenishing pump of an evaporation alkali liquor tank, the conveyed alkali liquor is the alkali liquor which is subjected to alkali liquefaction in an alkali liquor tank, and is conveyed to an alkali liquor tank and then conveyed again by an alkali liquor pump to be mixed with evaporated water to prepare the alkali liquor.
The concentration of the alkali liquor of the flocculating agent is sensitive to the sedimentation process of a sedimentation workshop, and the concentration requirement is high. In addition, under the high-concentration strong alkali condition, pipelines and equipment are easy to damage, the phenomenon of alkali leakage and spraying is caused, potential safety hazards exist, and the labor intensity of maintenance is increased.
[ summary of the invention ]
The invention provides an alkali liquor preparation system, which is used for preparing flocculant alkali liquor in alumina production. The preparation system is divided into two alkali preparation steps, the alkali concentration is adjusted gradually, the concentration precision of the prepared alkali is high, and the preparation system is suitable for the requirements of the process on the alkali concentration.
The technical scheme of the invention is as follows:
an alkali liquor preparation system comprises an alkali liquor tank, an evaporation tank, a primary alkali preparation tank, a secondary alkali preparation tank, two preparation devices and a plurality of conveying pipes;
the blending device comprises an upper chamber, a lower chamber and a monitoring unit; the bottom of the upper chamber is concave downwards and is in a bucket shape, and the bucket tip part is communicated with the lower chamber; the top of the upper chamber is provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively provided with a first electric regulating valve and a second electric regulating valve; an alkali liquor concentration detector is arranged at the bottom of the lower cavity chamber, a signal obtained by detection of the alkali liquor concentration detector is transmitted to a monitoring unit, and the monitoring unit is electrically connected with the first electric regulating valve and the second electric regulating valve respectively and controls the opening and closing of the two valves;
liquid caustic soda in the liquid caustic soda groove is sent into an upper chamber of a mixing device of the mixing device through the first conveying pipe; the second delivery pipe of the blending device is communicated with a steam condensate water source in the evaporation tank and is used for providing water for the blending device; the bottom of the lower cavity of the blending device is communicated with the primary alkali blending groove through a conveying pipe;
the alkali liquor of the primary alkali preparation tank is conveyed into the upper chamber of the preparation device through a first conveying pipe of the other preparation device; the second conveying pipe of the blending device is communicated with the condensed water and is used for supplying water to the blending device; the bottom of the lower cavity of the blending device is communicated with the secondary alkali blending groove through a conveying pipe.
Furthermore, the monitoring unit is provided with a display screen and is used for displaying the alkali liquor concentration detected by the alkali liquor concentration detector and the opening and closing states of the first electric regulating valve and the second electric regulating valve.
Further, the two blending devices are both arranged at the tops of the primary alkali blending tank and the secondary alkali blending tank.
Further, the primary alkali distribution tank is arranged in an evaporation workshop, and the secondary alkali distribution tank is arranged in a sedimentation workshop.
The technical scheme of the invention has the following beneficial effects:
1. the alkali liquor preparation system is divided into two times of alkali liquor preparation, the alkali liquor concentration is adjusted gradually, the alkali liquor preparation is avoided being completed once, and the final alkali liquor concentration of the preparation meets the strict requirements of the process on the alkali liquor concentration.
2. The alkali water before entering the alkali distribution groove passes through the blending device, is fully mixed in the upper cavity of the blending device and then flows into the lower cavity, and the alkali concentration detector of the lower cavity detects a real-time real numerical value, so that the concentration of the blended alkali water is more accurate; in addition, in order to ensure that the concentration of the alkali liquor finally put into use meets the accurate process requirement, the alkali liquor can be prepared for many times and the blending device can be used for many times.
[ description of the drawings ]
FIG. 1 is a schematic flow diagram of one embodiment of the present invention;
FIG. 2 is a schematic structural view of the blending device 3 in FIG. 1;
wherein: 1-liquid alkali tank, 2-evaporation tank, 3-blending device, 31-lower chamber, 32 upper chamber, 41-primary alkali blending tank, 42-secondary alkali blending tank, 5-alkali liquor concentration detector, 6-first delivery pipe, 61-first electric regulating valve, 7-second delivery pipe, 71-second electric regulating valve.
[ detailed description ] embodiments
The following examples may help one skilled in the art to more fully understand the present invention, but are not intended to limit the invention in any way.
Referring to fig. 1-2, an alkali liquor preparation system, the prepared alkali liquor is used as flocculant alkali liquor in a settling workshop, and comprises an alkali liquor tank 1, an evaporation tank 2, two preparation devices 3, a primary alkali preparation tank 41, a secondary alkali preparation tank 42 and a plurality of conveying pipes.
As shown in fig. 2, the blending device 3 includes an upper chamber 32, a lower chamber 31 and a monitoring unit; the bottom of the upper chamber 32 is concave and hopper-shaped, and the tip part is communicated with the lower chamber 31. The top of the upper chamber 32 is provided with a first delivery pipe 6 and a second delivery pipe 7, and the first delivery pipe 6 and the second delivery pipe 7 are respectively provided with a first electric control valve 61 and a second electric control valve 71. An alkali liquor concentration detector 5 is arranged at the bottom of the lower cavity 31, and a signal obtained by detection of the alkali liquor concentration detector 5 is transmitted to a monitoring unit; the monitoring unit is electrically connected with the first electric control valve 61 and the second electric control valve 71 respectively and controls the opening and closing of the two valves. Further, the monitoring unit comprises a display screen, the display screen is used for displaying the alkali liquor concentration information detected by the alkali liquor concentration detector, and in addition, the opening and closing states of the first electric regulating valve 61 and the second electric regulating valve 71 are displayed on the display screen.
The evaporation workshop is provided with a liquid caustic soda tank 1, an evaporation tank 2 and a primary alkali preparation tank 41. The liquid caustic soda in the liquid caustic soda tank 1 is delivered into an upper chamber 32 of a blending device 3 through a first delivery pipe 6 of the blending device 3 arranged at the top of a primary alkali blending tank 41, and the delivery power can be self-flow or pumping; the second conveying pipe 7 is communicated with the steam condensate water of the evaporation tank and is used for providing qualified water for the blending device 3; the bottom of the lower chamber 31 of the blending device 3 is communicated with the primary alkali-blending tank 41 through a delivery pipe.
The settling plant is provided with a secondary alkali distribution tank 42. The alkali liquor in the primary alkali distributing groove 41 is sent into the upper chamber 32 of the blending device 3 through the first conveying pipe 6 of the blending device 3 arranged at the top of the secondary alkali distributing groove 42, and the conveying power can be self-flowing or pumping; the second delivery pipe 7 of the blending device 3 is communicated with the steam condensate water and is used for providing qualified water for the blending device 3; the bottom of the lower chamber 31 of the blending device 3 is communicated with the secondary alkali-blending groove 42 through a conveying pipe; the alkali liquor in the secondary alkali-blending tank 42 is used as flocculant alkali liquor in a settling workshop.
Under the normal production condition, the control unit has the input control function, and the input sets up certain fixed lye concentration value, and the control unit control first electrical control valve 61 and the size that opens and shuts of second electrical control valve 71 for realize the mix proportion of first conveyer pipe 6 and second conveyer pipe 7 inflow, thereby make the suitable lye concentration of allotting. After liquid alkali or alkaline water fed by the first conveying pipe 6 and qualified steam condensate water fed by the second conveying pipe 7 are fully mixed in the upper chamber 32, the mixture flows into the lower chamber 31 from the bottom, an alkaline water concentration detector 5 at the bottom of the lower chamber 31 detects the concentration of the alkaline water and feeds the concentration of the alkaline water back to the control unit, and when the concentration of the alkaline water is smaller than a preset fixed value, the control unit controls the first electric regulating valve 61 to increase the entering amount of the liquid alkali or the alkaline water and controls the second electric regulating valve 71 to reduce the entering amount of the steam condensate water; when the concentration of the alkaline water is greater than a preset fixed value, the control unit controls the first electric regulating valve 61 to reduce the entering amount of the alkaline water or the alkaline water, and controls the second electric regulating valve 71 to increase the entering amount of the steam condensate water.
According to the process requirements, the alkali preparation method of different concentrations is adopted in the primary alkali preparation and the secondary alkali preparation, so that the finally prepared alkali liquor is kept in a stable concentration range, and the harsh requirements of the production process on the alkali liquor concentration are met.
Claims (3)
1. An alkali liquor preparation system is characterized by comprising an alkali liquor tank, an evaporation tank, a primary alkali preparation tank, a secondary alkali preparation tank, two preparation devices and a plurality of conveying pipes;
each allocating device comprises an upper chamber, a lower chamber and a monitoring unit; the bottom of the upper chamber is concave downwards and is in a bucket shape, and the bucket tip part is communicated with the lower chamber; the top of the upper chamber is provided with a first conveying pipe and a second conveying pipe, and the first conveying pipe and the second conveying pipe are respectively provided with a first electric regulating valve and a second electric regulating valve; an alkali liquor concentration detector is arranged at the bottom of the lower cavity chamber, a signal obtained by detection of the alkali liquor concentration detector is transmitted to a monitoring unit, and the monitoring unit is electrically connected with the first electric regulating valve and the second electric regulating valve respectively and is used for controlling the opening and closing of the first electric regulating valve and the second electric regulating valve;
liquid caustic soda in the liquid caustic soda groove is sent into an upper chamber of a mixing device of the mixing device through the first conveying pipe; the second delivery pipe of the blending device is communicated with a steam condensate water source in the evaporation tank and is used for providing water for the blending device; the bottom of the lower cavity of the blending device is communicated with the primary alkali blending groove through a conveying pipe;
the alkali liquor of the primary alkali preparation tank is conveyed into the upper chamber of the preparation device through a first conveying pipe of the other preparation device; the second conveying pipe of the blending device is communicated with the condensed water and is used for supplying water to the blending device; the bottom of the lower cavity of the blending device is communicated with the secondary alkali blending groove through a conveying pipe; the primary alkali distribution tank is arranged in an evaporation workshop, and the secondary alkali distribution tank is arranged in a sedimentation workshop.
2. The lye preparation system of claim 1 wherein the monitoring unit has a display screen for displaying the lye concentration detected by the lye concentration detector and the open and closed status of the first electrically operated control valve and the second electrically operated control valve.
3. The lye preparation system of claim 1 wherein said two dispensing devices are placed on top of both the primary and secondary lye preparation tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050331.6A CN107998976B (en) | 2017-10-31 | 2017-10-31 | Alkali liquor preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050331.6A CN107998976B (en) | 2017-10-31 | 2017-10-31 | Alkali liquor preparation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107998976A CN107998976A (en) | 2018-05-08 |
| CN107998976B true CN107998976B (en) | 2021-01-12 |
Family
ID=62051118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711050331.6A Active CN107998976B (en) | 2017-10-31 | 2017-10-31 | Alkali liquor preparation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107998976B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468619B (en) * | 2019-09-24 | 2021-04-06 | 广西贺州市红星纸业有限公司 | Concentration adjusting method based on medium-high concentration pulping and papermaking technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08108054A (en) * | 1994-10-13 | 1996-04-30 | Mitsubishi Gas Chem Co Inc | Liquid medicine preparing apparatus |
| CN103537224A (en) * | 2013-07-29 | 2014-01-29 | 太阳高新技术（深圳）有限公司 | Automatic feeder |
| CN104024391A (en) * | 2011-10-28 | 2014-09-03 | 宝洁公司 | Fabric care compositions |
| CN205867975U (en) * | 2016-07-19 | 2017-01-11 | 中国华电科工集团有限公司 | Basicity absorption liquid preparation facilities |
| CN206463905U (en) * | 2016-12-19 | 2017-09-05 | 天津佰力喜动物药业有限公司 | A kind of animal powder medicine mixing arrangement |
-
2017
- 2017-10-31 CN CN201711050331.6A patent/CN107998976B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08108054A (en) * | 1994-10-13 | 1996-04-30 | Mitsubishi Gas Chem Co Inc | Liquid medicine preparing apparatus |
| CN104024391A (en) * | 2011-10-28 | 2014-09-03 | 宝洁公司 | Fabric care compositions |
| CN103537224A (en) * | 2013-07-29 | 2014-01-29 | 太阳高新技术（深圳）有限公司 | Automatic feeder |
| CN205867975U (en) * | 2016-07-19 | 2017-01-11 | 中国华电科工集团有限公司 | Basicity absorption liquid preparation facilities |
| CN206463905U (en) * | 2016-12-19 | 2017-09-05 | 天津佰力喜动物药业有限公司 | A kind of animal powder medicine mixing arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107998976A (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106352238B (en) | Making gas ordorous control device and making gas ordorous system | |
| CN102375411A (en) | Online oil product blending method and device | |
| MX2019011300A (en) | Acid mixing system and method. | |
| CN107998976B (en) | Alkali liquor preparation system | |
| CN202369576U (en) | Autoweighing device for liquor blending | |
| CN104313931B (en) | The dilution of deinking liquid caustic soda and adding set | |
| CN201526806U (en) | Continuous liquid supply device | |
| CN203253406U (en) | Conveying pump station for solution mixing | |
| CN103599713A (en) | Automatic compounding and discharging system of water reducer, and burdening method thereof | |
| CN204551197U (en) | The batch asphalt mixing that a kind of automatic gauge controls | |
| CN206474113U (en) | Alcohol quantitative feeding mechanism | |
| CN104526881A (en) | Mixing type tank body stirring device | |
| CN107285439A (en) | Full-automatic tap water chlorine supplementing station | |
| CN206721217U (en) | A kind of size mixing device in Citric Acid Production technique | |
| CN205061656U (en) | Recycled water chlorination system | |
| CN204454547U (en) | Finished product tank field loading system | |
| CN203977493U (en) | Water system and the mixer that comprises this water system | |
| CN205797134U (en) | A kind of thiamine waste water leads to ammonia automix device continuously | |
| CN208717561U (en) | It prints and dyes straight roller mercerizing machine lye multiplexer | |
| CN112823865A (en) | Gas-liquid mixing regulation and control system and regulation and control method | |
| CN103230759A (en) | Solution mixing and conveying pump station | |
| CN105329927A (en) | Circulating mother liquor feeding device for producing aluminum oxide and feeding method | |
| CN203355629U (en) | Automatic dissolving device for casein production | |
| CN219701758U (en) | Automatic proportioning, mixing and distributing equipment for metal cutting fluid | |
| CN210024646U (en) | Vacuum oil injection device capable of injecting oil uniformly and continuously |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |