CN2399371Y - Variable gas soda making carbonators - Google Patents
Variable gas soda making carbonators Download PDFInfo
- Publication number
- CN2399371Y CN2399371Y CN 99232250 CN99232250U CN2399371Y CN 2399371 Y CN2399371 Y CN 2399371Y CN 99232250 CN99232250 CN 99232250 CN 99232250 U CN99232250 U CN 99232250U CN 2399371 Y CN2399371 Y CN 2399371Y
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- sieve plate
- carbon dioxide
- tower
- tower body
- circulating tube
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Abstract
The utility model relates to a variable gas soda making carbonator comprising a tower body, a scouring end gas member installed in the tower body, sieve plates absorbing carbon dioxide, an internal circulation pipe and an external cooling apparatus connected with the tower body through a connecting pipe. The sieve plates absorbing carbon dioxide are provided with an overflow pipe and the opening percent is 0.1-2%. The number of the sieve plates is two or more, and a distance exists between every two sieve plates. The internal circulation pipe is positioned below the sieve plates absorbing carbon dioxide. In the carbonator having the structure, because the opening percent of the sieve plates is low, an air-bed layer can be formed under the sieve plate to prevent the liquid between the sieve plates from back mixing axially. Therefore, the concentration of the carbon dioxide in the end gas out of the carbonator is less than 0.5%, which can directly meet the production requirement of synthetic ammonia.
Description
The utility model belongs to system alkali carbonating tower, particularly a kind of carbonating tower with variable gas soda making.
Conversion gas is a kind of mixed gas that contains carbonic acid gas, hydrogen, nitrogen, and carbonic acid gas wherein is the raw material of system soda ash, and nitrogen, hydrogen are the raw materials of producing synthetic ammonia.But producing synthetic ammonia has strict restriction to the amount of carbon dioxide that is mingled with in nitrogen, the hydrogen, and promptly amount of carbon dioxide must be less than 0.5%.Therefore, can earlier conversion gas be used to make alkali and sponge wherein carbonic acid gas, the tail gas with hydrogeneous nitrogen is used to produce synthetic ammonia then, and this is a kind of original creation technology that China utilizes conversion gas.The enforcement of this technology depends on corresponding apparatus, and this kind equipment should satisfy the requirement of producing sodium bicarbonate, guarantees that again institute's carbonated is less than 0.5%, to meet the requirement of Ammonia Production in its tail gas.
Existing variable gas soda making equipment is continued to use Sol dimension formula carbonating tower traditional in the soda industry basically, a little less than this kind carbonating tower the chief drawback is absorbing carbon dioxide ability, contained amount of carbon dioxide can not be directly used in Ammonia Production up to 2～10% in its tail gas.In order to reduce the carbon dioxide content in the tail gas, the someone will make the washing tower (for removing CO2) use of connecting with cleaning tower, be about to make tail gas that washing tower (for removing CO2) produces and will introduce cleaning tower and handle, to obtain satisfactory tail gas.The main drawback of this kind clustered aggregates has been to increase the pressure drop (pressure drop reaches 0.45MPa) of carbonization system, thereby has weakened the variable gas soda making advantage of low energy consumption.In addition, Sol dimension formula carbonating tower is used for variable gas soda making and also has the following disadvantages: 1. the whole thickening of tower body bottom need, thus increased weight, cost and manufacture difficulty; 2. the sodium bicarbonate crystallization is thin, is unfavorable for operations such as follow-up filtration, calcining.
Chinese patent CN87103005 discloses a kind of carbonization tower cooled externally by natural circulation, and its principal feature is the cooling water tank that has replaced Sol dimension formula carbonating tower bottom with outer water cooler, and outer water cooler is by the pipe connecting formation natural convection loop that links to each other with tower body.Though this kind carbonating tower has improved crystallization condition, the crystallization of sodium bicarbonate is increased, but the specific absorption to carbonic acid gas is still limited, three embodiment in its specification sheets show, minimum the reaching of carbon dioxide content is lower than 2% in the tail gas, can only reaching of also having is lower than 10%, still can not be directly used in Ammonia Production.
The purpose of this utility model is to provide a kind of carbonating tower that is suitable for variable gas soda making, this kind carbonating tower can not only reduce the carbon dioxide content in the tail gas effectively, make the tail gas that produces to be directly used in Ammonia Production, and the crystallization of sodium bicarbonate is increased, satisfy the needs of subsequent handlings such as filtration, calcining.
The purpose of this utility model is achieved in that when the structure design of carbonating tower, makes the receptivity of the intravital member enhancing of tower to carbonic acid gas, payes attention to the assurance to the sodium bicarbonate crystallization condition simultaneously.Be in particular in: 1. designed the sieve plate of absorbing carbon dioxide, this kind sieve plate has upflow tube and percentage of open area only is 0.1～2%.Because so low percentage of open area can form air cushion layer under the sieve plate, stop liquid axially back mixing between sieve plate, therefore, guaranteed that mother liquor only moves downward by upflow tube, gas moves upward by sieve aperture, thereby has strengthened the receptivity to carbonic acid gas greatly.2. continued to use the set-up mode of the external water cooler of CN87103005.
The carbonating tower that the utility model provides comprises tower body, is installed in the sieve plate of the intravital washing tail gas of tower member, absorbing carbon dioxide, inner circulating tube and the outer water cooler that links to each other with tower body by pipe connecting.The sieve plate of absorbing carbon dioxide is two or more than two, and spacing is arranged each other; Inner circulating tube is positioned at the below of the sieve plate of absorbing carbon dioxide.
In order to realize goal of the invention better, the utility model has also been taked following technical measures:
1. set up one group of annular sieve plate in tower body, this group annular sieve plate is positioned at the inner circulating tube below, and outer water cooler is installed corresponding to the zone that this group annular sieve plate distributes.This kind structure not only helps carbon dioxide absorption, and can increase the internal circulating load of outer water cooler.
2. the percentage of open area of annular sieve plate is controlled at 0.1～2%, with the receptivity of further increase carbonic acid gas.
3. inner circulating tube is at least two joints, link on the pairing tower body of inner circulating tube outer circulating tube is arranged, the setting of outer circulating tube can be regulated absorption load and the degree of supersaturation that respectively saves the inner circulating tube zone, and carry nucleus to beginning to separate out crystallizing field, make carbonating tower operation at a lower temperature still can obtain thick crystallization and prolong the working cycle of tower.
In order to adapt to the needs of varying environment condition, the member of washing tail gas can be arranged separately in one section tower body, can be installed in jointly in the tower body with sieve plate, inner circulating tube, the annular sieve plate of absorbing carbon dioxide again.The member of washing tail gas can be selected bubble-cap or vertical sieve tray for use.
The utlity model has following advantage:
1. carbon dioxide absorption capability is strong, and the gas concentration lwevel that goes out in the tower tail gas can directly reach the requirement of Ammonia Production less than 0.5%.
2. carbonization system pressure falls with system washing tower (for removing CO2) series connection cleaning tower and compares, and has been reduced to about 0.3MPa by 0.45MPa, can reduce energy consumption.
3. the sodium bicarbonate crystallization is thick, takes out the crystalline deposit time of liquid and reduces to below 60 seconds.
4. uninterrupted working time can prolong and reaches more than 30 days, and the production of having avoided the frequent cleaning of falling the tower to cause is fluctuateed.
5. compare with Sol dimension formula carbonating tower, weight has reduced 1/2nd, has both saved resource, has reduced cost again.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is a kind of structure diagram of the carbonating tower that proposes according to the utility model;
Fig. 2 is another structure diagram of the carbonating tower that proposes according to the utility model, and washing tail gas member is arranged separately in one section tower body;
Fig. 3 is the front view of the sieve plate of absorbing carbon dioxide;
Fig. 4 is the vertical view of the sieve plate of absorbing carbon dioxide;
Fig. 5 is the front view of annular sieve plate;
Fig. 6 is the vertical view of annular sieve plate.
Embodiment 1:
In the present embodiment, the structure of carbonating tower as shown in Figure 1.Sieve plate 3, inner circulating tube 4, valve 5, outer circulating tube 6, valve 7, annular sieve plate 8 and outer water cooler 9 by tower body 1, washing tail gas member 2, absorbing carbon dioxide assemble.The tower diameter of tower body 1 is that 1.5 meters, height are 33 meters, and its top has tail gas outlet c, and its top has mother liquor import b, and its underpart has conversion gas import a, and its bottom has conveying end d; Washing tail gas member 2 is selected vertical sieve tray for use, is provided with 10, and the mother liquor import b below that is installed in tower body 1 top forms the washing tail gas section; The sieve plate 3 of absorbing carbon dioxide is provided with 10 equally, they are the horizontal parallel arrangement spacing each other, be installed in the middle and upper part of tower body, form the carbon dioxide absorption section, the structure of every sieve plate as shown in Figure 3, Figure 4, have upflow tube 11 on it and be distributed with sieve aperture, its percentage of open area is 0.8%; Inner circulating tube 4 is 3 joints, is installed in the middle and lower part of tower body, and outer circulation 6 is 3, links to each other with tower body respectively, and it is provided with valve 5, and this section is for absorbing crystallized region, and the mother liquor absorbing carbon dioxide also forms nucleus; The annular sieve plate group is installed in the bottom of tower body 1 and is positioned at conversion gas import a top, is that 0.24% annular sieve plate 8 constitutes the structure of each annular sieve plate such as Fig. 5, shown in Figure 6 by four percentage of open area; Outer water cooler 9 is provided with 2, is installed in the zone that annular sieve plate distributes, and this section is cooling, absorption, crystallized region, under lower temperature along with mother liquor in the increase of amount of carbon dioxide, crystallization is constantly grown up.
The gas concentration lwevel that advances tower conversion gas in the present embodiment is 22～28%, pressure is 1.1～1.2MPa, goes out gas concentration lwevel in the tower tail gas less than 0.5%, tower throughput be 1.4～1.8 tons of soda ash/hour.
Embodiment 2:
In the present embodiment, the structure of carbonating tower as shown in Figure 2, difference from Example 1 is: 1. washing tail gas member is arranged separately in one section tower body 1, and mother liquor enters tower body from mother liquor import b, sends into the carbon dioxide absorption section by pump 10 after the washing tail gas section.2. washing tail gas member is selected bubble-cap for use.3. the percentage of open area of the sieve plate 3 of absorbing carbon dioxide is 1.2%.4. the percentage of open area of annular sieve plate is 0.4%.
The gas concentration lwevel that advances tower conversion gas in the present embodiment is 22～25%, and pressure is 1.0～1.1MPa, goes out gas concentration lwevel in the tower tail gas less than 0.5%.
Claims (6)
1. variable gas soda making carbonating tower, comprise tower body (1), be installed in sieve plate (3), the inner circulating tube (4) of the intravital washing tail gas of tower member (2), absorbing carbon dioxide and the outer water cooler (9) that links to each other with tower body by pipe connecting, the sieve plate (3) that it is characterized in that absorbing carbon dioxide has upflow tube (11) and percentage of open area is 0.1～2%, quantity is two or more than two, spacing is arranged each other, and inner circulating tube (4) is positioned at the below of the sieve plate of absorbing carbon dioxide.
2. variable gas soda making carbonating tower according to claim 1, it is characterized in that also being provided with in the tower body (1) one group of annular sieve plate (8), this group annular sieve plate is positioned at inner circulating tube (4) below, and outer water cooler (9) is installed corresponding to the zone that this group annular sieve plate distributes.
3. variable gas soda making carbonating tower according to claim 2, the percentage of open area that it is characterized in that annular sieve plate (8) is 0.1～2%.
4. according to claim 1 or 2 or 3 described variable gas soda making carbonating towers, it is characterized in that inner circulating tube (4) is at least two joints, is connected with outer circulating tube (6) on the pairing tower body of inner circulating tube.
5. variable gas soda making carbonating tower according to claim 4, it is characterized in that washing tail gas member (2) or be arranged separately in one section tower body, or be installed in jointly in the tower body with sieve plate (3), inner circulating tube (4), the annular sieve plate (8) of absorbing carbon dioxide.
6. variable gas soda making carbonating tower according to claim 5, it is characterized in that washing tail gas member (2) is bubble-cap or vertical sieve tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232250 CN2399371Y (en) | 1999-08-03 | 1999-08-03 | Variable gas soda making carbonators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232250 CN2399371Y (en) | 1999-08-03 | 1999-08-03 | Variable gas soda making carbonators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2399371Y true CN2399371Y (en) | 2000-10-04 |
Family
ID=34020969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99232250 Expired - Lifetime CN2399371Y (en) | 1999-08-03 | 1999-08-03 | Variable gas soda making carbonators |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2399371Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388960C (en) * | 2004-02-20 | 2008-05-21 | 自贡鸿鹤化工股份有限公司 | Carbonators with sieve-plate and hat shape mixture structure for preparing alkali by combined alkali process |
| CN102166502A (en) * | 2011-03-10 | 2011-08-31 | 中国成达工程有限公司 | Efficient sieve plate carbonating tower with liquid phase as continuous phase |
| CN110092397A (en) * | 2019-05-20 | 2019-08-06 | 中盐昆山有限公司 | Natural circulation cooling large size carbonators outside multistage |
-
1999
- 1999-08-03 CN CN 99232250 patent/CN2399371Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388960C (en) * | 2004-02-20 | 2008-05-21 | 自贡鸿鹤化工股份有限公司 | Carbonators with sieve-plate and hat shape mixture structure for preparing alkali by combined alkali process |
| CN102166502A (en) * | 2011-03-10 | 2011-08-31 | 中国成达工程有限公司 | Efficient sieve plate carbonating tower with liquid phase as continuous phase |
| CN110092397A (en) * | 2019-05-20 | 2019-08-06 | 中盐昆山有限公司 | Natural circulation cooling large size carbonators outside multistage |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |