CN103212213A - Flash tank - Google Patents
Flash tank Download PDFInfo
- Publication number
- CN103212213A CN103212213A CN2013101609440A CN201310160944A CN103212213A CN 103212213 A CN103212213 A CN 103212213A CN 2013101609440 A CN2013101609440 A CN 2013101609440A CN 201310160944 A CN201310160944 A CN 201310160944A CN 103212213 A CN103212213 A CN 103212213A
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- China
- Prior art keywords
- tank body
- flash
- charging aperture
- alkali lye
- tank
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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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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a flash tank. The flash tank comprises a tank body, wherein the tank body is provided with a feeding port, a discharging port and an evacuation port, wherein the feeding port is formed in the middle of the tank body, and an alkaline liquor outlet of the feeding port faces downwards; at least two disc-container-shaped splitter plates are arranged below the alkaline liquor outlet of the feeding port, the adjacent splitter plates are arranged in a staggering manner in the height direction and circumference of the tank body; and by virtue of the multiple splitter plates, alkaline liquor entering from the feeding port can overflow from the splitter plates in sequence from top to bottom and then flow in an alkaline liquor bin arranged at the lower part of the tank body. Preferably, the evacuation port is internally provided with a filter made of a silk screen material. The flash tank provided by the invention has the beneficial effects that the flash time is long, a flash effect is good, and the environmental pollution can be reduced or avoided.
Description
Technical field
The present invention relates to the alkali liquor concentration equipment in the sheet alkali manufacturing process of chlor-alkali, particularly a kind of flash tank that is used for the alkali lye flash concentration.
Background technology
In production concentration is 99% flaky sodium hydrate process, high alkali liquid is concentrated into 97% concentration through evaporation concentrator after, carry out of short duration flash concentration in flash tank, the alkali lye after flash distillation directly enters alkali liquor allocator, cools off and makes solid base through solid base system alkali machine again.The hydroxide flake process for producing sodium can be divided into and just extruding alkali and negative pressure goes out alkali, and it is just to extrude alkali technology that technology is sent out in flash vaporization, is just extruding alkali and be meant that alkali lye exports under certain positive pressure.Be used for just extruding the unlimited equipment of flash tank for communicating with atmosphere of alkali mode, need not heat during its flash distillation, high temperature alkaline solution makes full use of its pressure and forms flash distillation with atmospheric pressure reduction condition, makes the water evaporates in the alkali lye, raising concentration.Because its device structure is simple, and need not consume additional any heat energy, just can reach the purpose that improves concentration.Therefore, just extruding the alkali mode is widely adopted.Existing flash tank mainly comprises charging aperture, discharging opening and the evacuation port that is located on the evaporator body.Charging aperture and discharging opening all are arranged at the flash tank bottom, and alkali lye is just discharged rapidly from the discharging opening of bottom after the bottom access arrangement carries out flash distillation.Therefore, it exists flash-off time short, the deficiency that the flash distillation effect is not good enough.In addition, stop the liquid barrier of alkali lye from the evacuation port ejection though existing flash tank also is provided with one in the middle of charging aperture and emptying, the steam that alkali lye produces in flash process can be taken the little molecule alkali of a part out of from evacuation port, cause environmental pollution.For this reason, require further improvement.
Summary of the invention
Purpose of the present invention is exactly at the deficiencies in the prior art, and the flash tank that a kind of flash-off time is long, flash distillation is effective is provided.This flash tank also can further reduce or avoid a part of little molecule alkali to be taken out of from evacuation port.
For achieving the above object, the present invention adopts following technical scheme.
A kind of flash tank comprises tank body, is provided with charging aperture, discharging opening and evacuation port on tank body, and described charging aperture is located at the tank body middle part, and the alkali lye of charging aperture goes out mouth down; The alkali lye outlet below of charging aperture is provided with at least two disk-shaped container-like flow distribution plates, adjacent flow distribution plate is in the short transverse of tank body and circumferentially be staggered and be provided with, and flows into the alkali lye storehouse of tank body bottom a plurality of flow distribution plates are overflowed alkali lye that charging aperture enters successively by from top to bottom flow distribution plate after.
Adopt the present invention of aforementioned techniques scheme, because described charging aperture is located at the tank body middle part, the alkali lye Way out of charging aperture down, charging aperture below is provided with at least two and is the staggered flow distribution plate that is provided with in the tank body short transverse, and flow distribution plate flows into the tank body bottom after alkali lye that charging aperture enters is overflowed by from top to bottom liquid dish successively.When 97% concentrated alkali lye is carried out flash distillation, alkali lye at first enters the flow distribution plate of the top in the tank body from charging aperture, rise to the overfall height of flow distribution plate when alkali lye after, alkali lye flows out from overfall, the alkali lye that overflows forms the waterfall type liquid film, enter next flow distribution plate then, until overflowing the alkali lye storehouse that enters the tank body bottom from bottom flow distribution plate.Thereby greatly having prolonged the time of alkali lye from charging aperture to the alkali lye storehouse is flash-off time, and therefore, the flash distillation effect of high alkali liquid can be greatly improved.
Optimized technical scheme is provided with filter in the described evacuation port.Filter can filter the steam of discharging from evacuation port, can effectively reduce or avoid little molecule alkali lye to discharge with steam, thereby reduces or avoid environment is polluted.Filter can adopt filtering material with hole or screen pack class material etc. to make, to satisfy principle comprehensive selection such as service condition temperature, resistance to acids and bases, service life and economy.
Further optimized technical scheme, described filter is made by web material.As adopt the nickel wire net, but it has stronger acid-proof alkaline, resistance to elevated temperatures.
The present invention's beneficial effect compared with prior art is, flash-off time is long, and flash distillation is effective, and can reduce or avoid environmental pollution.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, but therefore do not limit the present invention among the described scope of embodiments.
Referring to Fig. 1, a kind of flash tank comprises tank body 1, is provided with charging aperture 2, discharging opening 3 and evacuation port 4 on tank body 1, and described charging aperture 2 is located at tank body 1 middle part, and the alkali lye of charging aperture 2 goes out mouth down; The alkali lye outlet below of charging aperture 2 is provided with at least two disk-shaped container-like flow distribution plates 5, adjacent flow distribution plate 5 is in the short transverse of tank body 1 and circumferentially be staggered and be provided with, and flows into the alkali lye storehouse of tank body 1 bottom a plurality of flow distribution plates 5 are overflowed alkali lye that charging aperture 2 enters successively by from top to bottom flow distribution plate 5 after.
Be provided with the filter of making by the nickel wire net 6 in the described evacuation port 4.
Though more than combine accompanying drawing and described embodiments of the present invention, but those of ordinary skill in the art can recognize also in the scope to claims and make various variations or modification that these modifications and variations are interpreted as within scope of the present invention and intention.
Claims (3)
1. a flash tank comprises tank body (1), is provided with charging aperture (2), discharging opening (3) and evacuation port (4) on tank body (1), it is characterized in that, described charging aperture (2) is located at tank body (1) middle part, and the alkali lye of charging aperture (2) goes out mouth down; The alkali lye outlet below of charging aperture (2) is provided with at least two disk-shaped container-like flow distribution plates (5), adjacent flow distribution plate (5) is in the short transverse of tank body (1) and circumferentially be staggered and be provided with, and flows into the alkali lye storehouse of tank body (1) bottom a plurality of flow distribution plates (5) are overflowed alkali lye that charging aperture (2) enters successively by from top to bottom flow distribution plate (5) after.
2. flash tank according to claim 1 is characterized in that: be provided with filter (6) in the described evacuation port (4).
3. flash tank according to claim 2 is characterized in that: described filter (6) is made by web material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101609440A CN103212213A (en) | 2013-05-06 | 2013-05-06 | Flash tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101609440A CN103212213A (en) | 2013-05-06 | 2013-05-06 | Flash tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103212213A true CN103212213A (en) | 2013-07-24 |
Family
ID=48810573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101609440A Pending CN103212213A (en) | 2013-05-06 | 2013-05-06 | Flash tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103212213A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140659A (en) * | 2017-06-12 | 2017-09-08 | 唐山三孚硅业股份有限公司 | A kind of equipment and technique for producing 95% concentration potassium hydroxide |
| CN110627289A (en) * | 2019-10-28 | 2019-12-31 | 中国华电科工集团有限公司 | Low-temperature flue gas heating wastewater concentration system |
| CN110642444A (en) * | 2019-10-28 | 2020-01-03 | 中国华电科工集团有限公司 | Vacuum phase-change wastewater concentration and flue gas waste heat recovery system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4789428A (en) * | 1985-07-11 | 1988-12-06 | Ahlstromforetagen Svenska Ab | Method for evaporation of spent liquor |
| CN201049216Y (en) * | 2006-11-29 | 2008-04-23 | 天津渤天化工有限责任公司 | Quick steaming tank |
| CN202410203U (en) * | 2012-02-04 | 2012-09-05 | 潍坊兴信技术服务有限公司 | Flash tank |
| CN202740801U (en) * | 2012-08-23 | 2013-02-20 | 中国石油天然气股份有限公司 | Baffled flow type gas-liquid separating structure of flash tank |
-
2013
- 2013-05-06 CN CN2013101609440A patent/CN103212213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4789428A (en) * | 1985-07-11 | 1988-12-06 | Ahlstromforetagen Svenska Ab | Method for evaporation of spent liquor |
| CN201049216Y (en) * | 2006-11-29 | 2008-04-23 | 天津渤天化工有限责任公司 | Quick steaming tank |
| CN202410203U (en) * | 2012-02-04 | 2012-09-05 | 潍坊兴信技术服务有限公司 | Flash tank |
| CN202740801U (en) * | 2012-08-23 | 2013-02-20 | 中国石油天然气股份有限公司 | Baffled flow type gas-liquid separating structure of flash tank |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140659A (en) * | 2017-06-12 | 2017-09-08 | 唐山三孚硅业股份有限公司 | A kind of equipment and technique for producing 95% concentration potassium hydroxide |
| CN107140659B (en) * | 2017-06-12 | 2018-11-06 | 唐山三孚硅业股份有限公司 | The equipment and technique of a kind of 95% concentration potassium hydroxide of production |
| CN110627289A (en) * | 2019-10-28 | 2019-12-31 | 中国华电科工集团有限公司 | Low-temperature flue gas heating wastewater concentration system |
| CN110642444A (en) * | 2019-10-28 | 2020-01-03 | 中国华电科工集团有限公司 | Vacuum phase-change wastewater concentration and flue gas waste heat recovery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |