CN204093288U - A kind of absorption plant improving iodine absorptivity - Google Patents
A kind of absorption plant improving iodine absorptivity Download PDFInfo
- Publication number
- CN204093288U CN204093288U CN201420494216.3U CN201420494216U CN204093288U CN 204093288 U CN204093288 U CN 204093288U CN 201420494216 U CN201420494216 U CN 201420494216U CN 204093288 U CN204093288 U CN 204093288U
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- absorbing liquid
- absorption
- liquid bath
- circulating pump
- 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.)
- Expired - Fee Related
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 98
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000011630 iodine Substances 0.000 title claims abstract description 30
- 229910052740 iodine Inorganic materials 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 19
- 229920001617 Vinyon Polymers 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000010977 unit operation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 4
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229940071870 hydroiodic acid Drugs 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007928 solubilization Effects 0.000 description 2
- 238000005063 solubilization Methods 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910000043 hydrogen iodide Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of absorption plant improving iodine absorptivity, comprise absorption tower and absorb liquid bath, air inlet is provided with bottom described absorption tower, described air inlet is connected with air inlet pipe, the top on described absorption tower is connected with the bottom absorbing liquid bath by the first absorbing liquid circulating pump, the top of described absorption liquid bath is connected with the bottom on absorption tower by absorbing liquid pipe, heat exchanger is provided with in described absorption liquid bath, described heat exchanger is connected with cold water inlet and cold water outlet pipe respectively, the top on described absorption tower is provided with second absorption tower and the bottom of second absorption tower is connected with the top on absorption tower, the top of described second absorption tower is connected with the bottom absorbing liquid bath by the second absorbing liquid circulating pump, described second absorption tower top is provided with offgas outlet.The utility model reduces absorbing liquid temperature and increases liquid phase pressure, improves the solubility of gas, is conducive to absorptive unit operation, absorptivity can be made to reach 90%, thus substantially increase the rate of recovery of iodine.
Description
Technical field
The utility model belongs to chemical production technical field, is specifically related to a kind of absorption plant improving iodine absorptivity.
Background technology
It is be about 36 degrees Celsius by temperature that phosphorus ore association iodine resource reclaim absorbs operation in producing, pressure is blasting from bottom side, absorption tower containing iodine extracting gas of 1.8kpa, with sulfurous acid solution as absorbing liquid, pass into absorbing liquid from tower top to absorb, whole process comprises two steps: be first chemical absorbing, iodine in extracting gas and absorbing liquid sulfite react, and its equation is: I
2+ 2H
2o+SO
2=2HI+H
2sO
4+ Q.Next is Physical Absorption, the water-soluble generation hydroiodic acid of the HI generated before this.This process HI breaking of covalent bonds releases a large amount of heat.If SO in absorbing liquid
2add deficiency, and temperature is not high, just has iodine and dissolve equation: I
2+ I
-=I
3 -produce, make iodine be present in absorbing liquid, can not go out with exhaust emissions.
Whole absorption operation is all exothermic process, and absorption plant of the prior art does not have absorbing liquid cooling installation, and temperature, can not close to HI optimum temperature of solubilization temperature 25 degrees Celsius all the time about 36 degrees Celsius.Heat can not shift out in time, suppress reaction to be carried out to positive reaction direction, and liquid phase pressure is low, is unfavorable for the absorption of iodine.This kind of technique absorption efficiency is low, can only reach 50%, causes the waste of iodine, causes to produce to consume high, low in economic efficiency, and discharges in a large number cause environmental pollution containing iodine tail gas.The defect existed in prior art, becomes the significant problem that those skilled in the art are anxious to be resolved.
Utility model content
The purpose of this utility model is to solve the technical problem existed in prior art, provides that a kind of structure is simple, easy to operate, the absorption plant of the raising iodine absorptivity of energy-conserving and environment-protective.
In order to achieve the above object, the utility model is by the following technical solutions: a kind of absorption plant improving iodine absorptivity, comprise absorption tower and absorb liquid bath, air inlet is provided with bottom described absorption tower, described air inlet is connected with air inlet pipe, the top on described absorption tower is connected with the bottom absorbing liquid bath by the first absorbing liquid circulating pump, the top of described absorption liquid bath is connected with the bottom on absorption tower by absorbing liquid pipe, heat exchanger is provided with in described absorption liquid bath, described heat exchanger is connected with cold water inlet and cold water outlet pipe respectively, the top on described absorption tower is provided with second absorption tower and the bottom of second absorption tower is connected with the top on absorption tower, the top of described second absorption tower is connected with the bottom absorbing liquid bath by the second absorbing liquid circulating pump, described second absorption tower top is provided with offgas outlet.
Further, deflection plate is provided with in described second absorption tower.
Further, be provided with sleeve pipe in described second absorption tower, the upper end of described sleeve pipe is connected with offgas outlet, and the lower end of described sleeve pipe is positioned at the bottom of second absorption tower.
Further, be provided with the first spray head in described absorption tower, described first spray head is connected with the liquid outlet of the first absorbing liquid circulating pump, and the inlet of described first absorbing liquid circulating pump is connected with the bottom absorbing liquid bath.
Further, be provided with the second spray head in described second absorption tower, described second spray head is connected with the liquid outlet of the second absorbing liquid circulating pump, and the inlet of described second absorbing liquid circulating pump is connected with the bottom absorbing liquid bath.
Further, described first spray head and the second spray head are respectively four.
Further, described heat exchanger comprises serpentine coil, and the two ends of described serpentine coil are connected with cold water inlet and cold water outlet pipe respectively.
Further, anticorrosive coat is provided with outside described serpentine coil.
Further, described anticorrosive coat is vinyon.
Further, the stainless steel tube of described serpentine coil to be nominal diameter be 20mm.
The utility model hinge structure has following beneficial effect: the utility model by being provided with heat exchanger and being provided with second absorption tower at the top on absorption tower in absorption liquid bath, change the process conditions that are beneficial to absorption and carry out secondary absorption, solve the shortcoming that iodine absorption efficiency is low, and structure is simple, easy to operate, absorptivity can be made to reach 90%, thus substantially increase the rate of recovery of iodine, reduce and consume, reduce exhaust emissions, decrease environmental pollution, i.e. energy-conservation but also environmental protection.With old material when the utility model is transformed on the basis of existing technology, do not need the cost that costs a lot of money.The utility model reduces absorbing liquid temperature and increases liquid phase pressure, improves the solubility of gas, is conducive to absorptive unit operation, has good application prospect and economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Reference numeral implication is as follows: 1, heat exchanger; 2, second absorption tower; 3, absorption tower; 4, liquid bath is absorbed; 5, the first absorbing liquid circulating pump; 6, air inlet pipe; 7, absorbing liquid pipe; 8, cold water inlet; 9, the second absorbing liquid circulating pump; 10, offgas outlet; 11, the first spray head; 12, the second spray head; 13, deflection plate; 14, sleeve pipe.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of absorption plant improving iodine absorptivity, comprise absorption tower 3 and absorb liquid bath 4, air inlet is provided with bottom absorption tower 3, air inlet is connected with air inlet pipe 6, the top on absorption tower 3 is connected with the bottom absorbing liquid bath 4 by the first absorbing liquid circulating pump 5, and the top absorbing liquid bath 4 is connected by the bottom of absorbing liquid pipe 7 with absorption tower 3, and being provided with heat exchange area in absorption liquid bath 4 is 15m
2heat exchanger 1, heat exchanger 1 comprises serpentine coil, the stainless steel tube of serpentine coil to be nominal diameter be 20mm, serpentine coil two ends are connected with cold water inlet 8 and cold water outlet pipe 9 respectively, anticorrosive coat is provided with outside serpentine coil, anticorrosive coat is vinyon, because hydroiodic acid is that a kind of strong acid has extremely strong corrosivity, namely the heat exchanger 1 using stainless steel to make also can be corroded in a short time, institute thinks and prevents heat exchanger 1 from corroding, protect at serpentine coil appearance lining skim vinyon, four the first spray heads 11 are provided with in absorption tower 3, first spray head 11 is connected with the liquid outlet of the first absorbing liquid circulating pump 5, the inlet of the first absorbing liquid circulating pump 5 is connected with the bottom absorbing liquid bath 4, the top on absorption tower 3 is provided with second absorption tower 2 and the bottom of second absorption tower 2 is connected with the top on absorption tower 3, the top of second absorption tower 2 is connected with the bottom absorbing liquid bath 4 by the second absorbing liquid circulating pump 9, second absorption tower 2 top is provided with offgas outlet 10, deflection plate 13 is provided with in second absorption tower 2, sleeve pipe 14 is provided with in second absorption tower 2, the upper end of sleeve pipe 14 is connected with offgas outlet 10, the lower end of sleeve pipe 14 is positioned at the bottom of second absorption tower 2, deflection plate 13 and sleeve pipe 14 make tail gas form vortex, extend the time of staying of tail gas in second absorption tower 2, iodine in tail gas is fully absorbed, four the second spray heads 12 are provided with in second absorption tower 2, second spray head 12 is connected with the liquid outlet of the second absorbing liquid circulating pump 9, the inlet of the second absorbing liquid circulating pump 9 is connected with the bottom absorbing liquid bath 4.
In process of production, recirculated cooling water is sent into heat exchanger 1 serpentine coil from cold water inlet 8 through circulating cooling water pump, and when absorbing liquid passes slowly heat exchanger 1, heat passes to recirculated cooling water by serpentine coil rapidly, heat is taken away by recirculated cooling water, thus absorbing liquid temperature is reduced.This heat transfer process can make absorbing liquid temperature be down to 28-30 degree Celsius summer, and winter can be down to 25-28 degree Celsius, and close to HI optimum temperature of solubilization temperature 25 degrees Celsius, iodine reaches best assimilation effect, and at SO
2addition also can make I time not enough
3 -stable existence, can not make I
2because temperature is too high and discharge from offgas outlet 10 with tail gas, absorbing liquid also can not evaporate with tail gas.Four the second spray heads 12 are housed in the second absorption tower 2 installed additional uniformly, deflection plate 13 and sleeve pipe 14, tail gas is made to form vortex, by the second absorbing liquid circulating pump 9, absorbing liquid is passed in second absorption tower 2, double absorption is carried out to residual iodine and hydrogen iodide, extracting gas pressure can be made to be increased to 2.5kpa by original 1.8kpa, increase liquid phase pressure, thus increase the solubility of HI gas, greatly improve the absorption efficiency of iodine.The utility model and prior art production effect contrast table be as shown in Table 1:
Table one
Claims (10)
1. one kind is improved the absorption plant of iodine absorptivity, comprise absorption tower (3) and absorb liquid bath (4), bottom, described absorption tower (3) is provided with air inlet, described air inlet is connected with air inlet pipe (6), the top on described absorption tower (3) is connected with the bottom absorbing liquid bath (4) by the first absorbing liquid circulating pump (5), the top of described absorption liquid bath (4) is connected by the bottom of absorbing liquid pipe (7) with absorption tower (3), it is characterized in that: in described absorption liquid bath (4), be provided with heat exchanger (1), described heat exchanger (1) is connected with cold water inlet (8) and cold water outlet pipe (9) respectively, the top on described absorption tower (3) is provided with second absorption tower (2) and the bottom of second absorption tower (2) is connected with the top of absorption tower (3), the top of described second absorption tower (2) is connected with the bottom absorbing liquid bath (4) by the second absorbing liquid circulating pump (9), described second absorption tower (2) top is provided with offgas outlet (10).
2. a kind of absorption plant improving iodine absorptivity according to claim 1, is characterized in that: be provided with deflection plate (13) in described second absorption tower (2).
3. a kind of absorption plant improving iodine absorptivity according to claim 1, it is characterized in that: in described second absorption tower (2), be provided with sleeve pipe (14), the upper end of described sleeve pipe (14) is connected with offgas outlet (10), and the lower end of described sleeve pipe (14) is positioned at the bottom of second absorption tower (2).
4. a kind of absorption plant improving iodine absorptivity according to claim 1, it is characterized in that: in described absorption tower (3), be provided with the first spray head (11), described first spray head (11) is connected with the liquid outlet of the first absorbing liquid circulating pump (5), and the inlet of described first absorbing liquid circulating pump (5) is connected with the bottom absorbing liquid bath (4).
5. a kind of absorption plant improving iodine absorptivity according to claim 4, it is characterized in that: in described second absorption tower (2), be provided with the second spray head (12), described second spray head (12) is connected with the liquid outlet of the second absorbing liquid circulating pump (9), and the inlet of described second absorbing liquid circulating pump (9) is connected with the bottom absorbing liquid bath (4).
6. a kind of absorption plant improving iodine absorptivity according to claim 5, is characterized in that: described first spray head (11) and the second spray head (12) are respectively four.
7. a kind of absorption plant improving iodine absorptivity according to claim 1, is characterized in that: described heat exchanger (1) comprises serpentine coil, the two ends of described serpentine coil are connected with cold water inlet (8) and cold water outlet pipe (9) respectively.
8. a kind of absorption plant improving iodine absorptivity according to claim 7, is characterized in that: be provided with anticorrosive coat outside described serpentine coil.
9. a kind of absorption plant improving iodine absorptivity according to claim 8, is characterized in that: described anticorrosive coat is vinyon.
10. a kind of absorption plant improving iodine absorptivity according to claim 7, is characterized in that: the stainless steel tube of described serpentine coil to be nominal diameter be 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494216.3U CN204093288U (en) | 2014-08-29 | 2014-08-29 | A kind of absorption plant improving iodine absorptivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494216.3U CN204093288U (en) | 2014-08-29 | 2014-08-29 | A kind of absorption plant improving iodine absorptivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204093288U true CN204093288U (en) | 2015-01-14 |
Family
ID=52261759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420494216.3U Expired - Fee Related CN204093288U (en) | 2014-08-29 | 2014-08-29 | A kind of absorption plant improving iodine absorptivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204093288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190230A (en) * | 2014-08-29 | 2014-12-10 | 甘肃瓮福化工有限责任公司 | Absorption device capable of increasing iodine absorption rate |
| CN104722188A (en) * | 2015-03-02 | 2015-06-24 | 江苏汇维特新材料科技有限公司 | Mercury vapor absorbing device and mercury vapor absorbing method |
| CN108686611A (en) * | 2018-07-18 | 2018-10-23 | 中国工程物理研究院核物理与化学研究所 | A kind of absorber for handling I-131 in high temperature carrier gas |
-
2014
- 2014-08-29 CN CN201420494216.3U patent/CN204093288U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190230A (en) * | 2014-08-29 | 2014-12-10 | 甘肃瓮福化工有限责任公司 | Absorption device capable of increasing iodine absorption rate |
| CN104190230B (en) * | 2014-08-29 | 2017-02-15 | 甘肃瓮福化工有限责任公司 | Absorption device capable of increasing iodine absorption rate |
| CN104722188A (en) * | 2015-03-02 | 2015-06-24 | 江苏汇维特新材料科技有限公司 | Mercury vapor absorbing device and mercury vapor absorbing method |
| CN108686611A (en) * | 2018-07-18 | 2018-10-23 | 中国工程物理研究院核物理与化学研究所 | A kind of absorber for handling I-131 in high temperature carrier gas |
| CN108686611B (en) * | 2018-07-18 | 2023-12-15 | 中国工程物理研究院核物理与化学研究所 | Absorber for treating I-131 in high-temperature carrier gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20200829 |