CN87103005B - Carbonization tower cooled externally by natural circulation - Google Patents
Carbonization tower cooled externally by natural circulation Download PDFInfo
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- CN87103005B CN87103005B CN87103005A CN87103005A CN87103005B CN 87103005 B CN87103005 B CN 87103005B CN 87103005 A CN87103005 A CN 87103005A CN 87103005 A CN87103005 A CN 87103005A CN 87103005 B CN87103005 B CN 87103005B
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- tower
- sodium bicarbonate
- natural circulation
- tower body
- carbonating
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Carbonization tower cooled externally by natural circulation is the equipment that is used to produce sodium bicarbonate.It is characterized in that reaction solution tower body and outside realize natural circulation by density difference and gas lift effect between the cooler.Carbonating tower of the present invention has solved reaction solution in the outer cooling problem of tower, and tower body can be worked continuously for a long time, has improved the utilization ratio of tower tower, has saved facility investment and power consumption, and carbon dioxide absorption rate height can be produced the big sodium bicarbonate crystallization of particle diameter.Carbonating tower of the present invention is applicable to sodium bicarbonate production and technological process similarly.
Description
The present invention relates to produce in the chemical industry equipment of sodium bicarbonate.
In soda industry, the past is adopted Sol Vita (Solvay carbonator) always.The top of this tower is the vertically arranged bubble-cap of multilayer, and the bottom is a cooling water tank.Because the sodium bicarbonate that generates in the tower can form on the water-cooled tube outer wall and scab, reduce cooling performance, must adopt the Sol Vita grouping operation more than two in the production, making wherein in turn, a tower cleans.This can increase facility investment and operation, maintenance cost.
As improvement to the Sol Vita, English Patent NO.1520249(1978.8.2) proposes in tower, to adopt the inner circulating tube structure, no-cooling-water pipe in the tower is emitted from reaction zone when needing again and is returned reaction zone again after some reaction solutions (being referred to as " reaction solution " with ammoniated brine and with suspension that carbon dioxide reaction is generated the present specification) cool off.Since in this tower in each reaction zone gas phase and liquid phase for and stream contact, assimilated efficiency is lower; Simultaneously in order to shift out the carburizing reagent liberated heat, reaction solution must be drawn and return reaction zone again after cooling off, and this patent does not propose concrete solution.
Task of the present invention is that a kind of equipment-carbonization tower cooled externally by natural circulation of producing sodium bicarbonate will be provided.It has high carbon dioxide absorption rate, can obtain the big sodium bicarbonate crystallization of particle diameter, do not need regularly to clean in turn tower body, simultaneously in tower internal reaction liquid being introduced the process of returning again after outer cooler cools off in the tower, do not need power set come realization response liquid carbonating tower and outside continuous circulation between the cooler.
Feature of the present invention is a reaction solution when cooling off outside tower body, reaction solution tower body and outside adopt natural circulation between the cooler.Accompanying drawing is that the equipment of production sodium bicarbonate provided by the present invention is the vertical surface sectional view of carbonization tower cooled externally by natural circulation.
Tower body (2) is the cylinder isometrical or reducing of a steel.One or more inner circulating tubes (5) are housed in the tower body.In tower body, can also install one or more sieve plate (6); Also can install one or more bubble-caps (7); Also can install one or more bamboo rain-hats (4); Also can install sieve plate, bubble-cap and bamboo rain-hat simultaneously or install in these three kinds of internals any two kinds simultaneously.
The tower body outside have one or more outside cooler (11) link to each other the natural convection loop of anabolic reaction liquid by pipe connecting with tower body (2).Outer cooler is shell and tube heat exchanger preferably, also available other types interchanger.The shape of pipe connecting and the structure of outer cooler make the resistance to flow of this circulation loop as far as possible little.Can not establish valve on the pipe connecting when adopting an outer cooler; Pipe connecting is provided with valve (10) when adopting a plurality of outer cooler, and optimum valve is an angle valve.
On tower body top, liquid import (8) and tail gas outlet (9) responds; At the tower body middle part, stage casing gas import (3) is arranged; In the tower body bottom, hypomere gas import (1) and reaction solution conveying end (12) are arranged.
When making with carbon steel, the equipment of production sodium bicarbonate of the present invention to pass through anti-corrosive treatment.
Carburizing reagent liquid is entered by reaction solution import (8), and carbon dioxide is fed by hypomere gas import (1) and stage casing gas import (3).Carbonic acid gas generates sodium bicarbonate from bottom to top by carbonating tower at Ta Nei and reaction solution reaction.Carbonic acid gas and the rare gas element that is absorbed by reaction solution do not discharged by tail gas outlet (9).Reaction solution contains sodium bicarbonate crystalline suspension from top to bottom by carbonating tower at Ta Nei and carbon dioxide reaction generation, discharges from reaction solution conveying end (12) then.
The part that has inner circulating tube (5) in tower forms the internal recycle loop between zone between inner circulating tube and the tower wall and the inner circulating tube pipe inner compartment.Because the gas volume that the liquid in these two zones contains is different, so density is also different, this density difference driving a reaction liquid circulates in the internal recycle loop, and this circulation is particularly conducive to the sodium bicarbonate crystalline and grows up.
By tower body (2) and outside in the reaction solution circulation loop formed of cooler (11), in the tower between liquid and the interior liquid of outer cooler also because of the different density differences that produce of the gas volume that contains, and in the tower between the interior liquid of liquid and outer cooler Yin Wendu different and this density difference is further enlarged, add the gas lift power of gas when in tower, rising, make reaction solution tower body (2) and outside realize circulation continuously between the cooler (11), be after the higher tower internal reaction liquid of temperature advances outer cooler cooling, to return in the tower again.Utilize density difference and gas lift effect realize liquid in the tower tower body and outside natural circulation between the cooler, be essential characteristic of the present invention.Compare with pump circulation, not only save facility investment and power consumption, also help the sodium bicarbonate crystalline and grow up.
In tower, can install bamboo rain-hat (4), or sieve plate (6), or bubble-cap (7), also can be equipped with wherein two or three simultaneously.Reaction solution and carbonic acid gas can improve the specific absorption of carbonic acid gas by these internals the time.
Carbonating tower of the present invention is suitable equally for the technological process that the generation thermopositive reaction need be cooled off between liquid and gas, resultant is suspension and cause scabbing.
Embodiment 1
Tower diameter 0.5m; Tower height 25m; 2 of inner circulating tubes; 2 of outer coolers, F=20.1m
2/ platform; Tower body is connected with Rubber diaphragm valve with outer cooler; 16 on sieve plate is housed, 9 of bamboo rain-hats in the tower.Carbonating tower unit volume output is 0.8t/ day m
3; Sodium bicarbonate median size 118.56 μ; Take out average 85.3 titres of liquid fixed ammonia; The tail gas carbonated is lower than 2%.
Tower diameter 2.2m; Tower height 29m; 2 of inner circulating tubes; 1 of outer cooler, F=400m
2/ platform; Valving not between tower body and the outer cooler; 15 on sieve plate is housed, 9 of bamboo rain-hats in the tower.Carbonating tower unit volume output is 0.7t/ day m
3; Sodium bicarbonate median size 110 μ; Take out average 82 titres of liquid fixed ammonia; The tail gas carbonated is lower than 10%.
Tower diameter 2.5m/2.8m; Tower height 26m; 4 of inner circulating tubes; 2 of outer coolers, F=390m
2/ platform; Tower body is connected with angle valve with outer cooler; 5 on sieve plate is housed in the tower, 5 of bubble-caps, 2 of bamboo rain-hats, carbonating tower unit volume output are 0.66t/ day m
3; Sodium bicarbonate median size 110 μ; Take out liquid fixed ammonia 82～85 titres; The tail gas carbonated is lower than 10%.
Claims (3)
1, a kind ofly particularly produces the carbonating tower that sodium bicarbonate is used, in tower body (2), have one or more inner circulating tubes (5), it is characterized in that tower body (2) outside have one or more outside cooler (11) link to each other with tower body (2) by pipe connecting, form natural convection loop, the structure of the shape of pipe connecting and outer cooler (11) makes the resistance to flow in this loop as far as possible little, when adopting a plurality of outer coolers (11), on pipe connecting, be provided with valve (10).
2,, it is characterized in that in tower, having one or more sieve plate (6), bubble-cap (7) and/or bamboo rain-hat (4) according to the carbonating tower of claim 1.
3,, it is characterized in that valve (10) is an angle valve according to the carbonating tower of claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103005A CN87103005B (en) | 1987-04-28 | 1987-04-28 | Carbonization tower cooled externally by natural circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103005A CN87103005B (en) | 1987-04-28 | 1987-04-28 | Carbonization tower cooled externally by natural circulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103005A CN87103005A (en) | 1987-12-30 |
| CN87103005B true CN87103005B (en) | 1988-10-26 |
Family
ID=4814216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87103005A Expired CN87103005B (en) | 1987-04-28 | 1987-04-28 | Carbonization tower cooled externally by natural circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87103005B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357770B (en) * | 2007-07-30 | 2010-04-21 | 王全 | Method for preparing sodium bicarbonate |
| CN108862332B (en) * | 2018-09-04 | 2023-08-22 | 北京烨晶科技有限公司 | Carbonation crystallization device and use thereof and preparation method of sodium bicarbonate |
| CN110092397B (en) * | 2019-05-20 | 2024-06-07 | 中盐昆山有限公司 | Multistage external natural circulation cooling large-scale carbonization tower |
-
1987
- 1987-04-28 CN CN87103005A patent/CN87103005B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN87103005A (en) | 1987-12-30 |
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| C10 | Entry into substantive examination | ||
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| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB01 | Change of bibliographic data |
Inventor after: Zhou Guangyao Inventor after: Yang Weimin Inventor after: Wang Chu Inventor after: Guo Fangwen Inventor after: Yuan Jinjin Inventor after: Zhang Changjin Inventor after: Cui Huaisong Inventor after: Dan Zexian Inventor after: Guan Xiyong Inventor after: Jiang Zhenliang Inventor after: Du Yuanjin Inventor after: Wang Kunming Inventor after: Ke Changhe Inventor after: Niu Man Inventor after: Zhou Yuanzhi Inventor before: Dan Zexian Inventor before: Wang Chu Inventor before: Guo Fangwen Inventor before: Yuan Jinjin Inventor before: Zhang Changshi Inventor before: Cui Huaisong Inventor before: Guan Xiyong Inventor before: Jiang Zhenliang Inventor before: Du Yuanjin Inventor before: Wang Kunming Inventor before: Ke Changhe Inventor before: Niu Man Inventor before: Zhou Yuanzhi Inventor before: Yang Weimin |
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| COR | Change of bibliographic data |
Free format text: CORRECT FROM: TANZEXIAN; GUAN XIYONG; JIANG ZHENLIANG; DU YUANJIN; WANG KUNMING; KE CHANGHE; NIU MAN; ZHOU YUANZHI; YANG WEIMIN; WANG CHU; GUO FANGWEN; YUAN JINJIN; ZHANG CHANGSHI; CUI HUAISONG TO: ZHOU GUANGYAO; TANZEXIAN; GUAN XIYONG; JIANG ZHENLIANG; DU YUANJIN; WANG KUNMING; KE CHANGHE; NIU MAN; ZHOU YUANZHI; YANG WEIMIN; WANG CHU; GUO FANGWEN; YUAN JINJIN; ZHANG CHANGJIN; CUI HUAISONG |
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |