CN211078473U - Automatic circulating absorption complex iron desulfurizing tower - Google Patents
Automatic circulating absorption complex iron desulfurizing tower Download PDFInfo
- Publication number
- CN211078473U CN211078473U CN201921991473.7U CN201921991473U CN211078473U CN 211078473 U CN211078473 U CN 211078473U CN 201921991473 U CN201921991473 U CN 201921991473U CN 211078473 U CN211078473 U CN 211078473U
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- Prior art keywords
- pipeline
- control valve
- gas
- complex iron
- desulfurizing tower
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 54
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 15
- 230000003009 desulfurizing effect Effects 0.000 title abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000006477 desulfuration reaction Methods 0.000 claims description 46
- 230000023556 desulfurization Effects 0.000 claims description 46
- 239000007921 spray Substances 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 32
- 239000000243 solution Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 16
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 15
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 15
- 239000003054 catalyst Substances 0.000 description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- 229910001448 ferrous ion Inorganic materials 0.000 description 4
- -1 iron ions Chemical class 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002468 redox effect Effects 0.000 description 1
- 150000003839 salts Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
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Abstract
The utility model discloses an automatic circulating absorption complex iron desulfurizing tower, which comprises a desulfurizing tower body, wherein a top pipeline of the desulfurizing tower is connected with an air inlet, the top end of the desulfurizing tower is provided with a filter screen, and the filter screen pipeline is connected with a first control valve; the first end of the first control valve is connected with the first end of the second control valve through a liquid return pipeline, the first end of the second control valve is connected with a liquid storage tank through a pipeline, and the liquid storage tank is connected with a spraying pipe through a pipeline; the second end of the first control valve is connected with a gas-liquid separator through a gas pipeline, one end of the first control valve is connected with the gas outlet through a pipeline, and the other end of the first control valve is connected with the second end of the second control valve through a pipeline. The utility model provides an automatic cycle absorption complex iron desulfurizing tower with cyclic utilization of desulfurizing liquid and high reaction efficiency.
Description
Technical Field
The utility model relates to a complex iron desulfurization technical field particularly, relates to an automatic circulation absorbs complex iron desulfurizing tower.
Background
The complex iron is a catalyst, and in the desulfurization process, the iron-based body fluid phase oxidation method using the complex iron as the catalyst has the advantages of excellent performance, high absorption and regeneration speed, high sulfur capacity and no limit to the concentration of hydrogen sulfide in the feed gas. In the desulfurization method, the complex iron method has smaller device size compared with other liquid-phase redox methods, and the method finishes hydrogen sulfide removal through a special packed tower. In the desulfurization technology, the complex iron desulfurization technology is a method for removing hydrogen sulfide by wet oxidation with complex iron as a catalyst, and is characterized in that the hydrogen sulfide is directly converted into elemental hydrogen. In the desulfurization process, the complex iron desulfurization process can provide a constant-temperature and low-cost operation method for removing hydrogen sulfide. The chemical reaction principle is that the oxygen in the air is used to oxidize the hydrogen sulfide in the gas phase, so that the hydrogen sulfide is oxidized into elemental sulfur. In the chemical principle, the complex iron desulfurization catalyst utilizes the oxidation-reduction property of complex iron ions in an aqueous solution to carry out gas-liquid contact reaction on a hydrogen sulfide-containing gas and the aqueous solution (complex iron absorbent for short) containing the complex iron catalyst. The gas-liquid phase contact reaction firstly absorbs hydrogen sulfide in raw material gas into aqueous solution through the alkalescence of the aqueous solution and acid-base chemical absorption during gas-liquid contact; in the aqueous solution, oxidizing the sulfureted hydrogen into elemental sulfur by using the oxidability of high-valence complex iron ions, and reducing the complex iron ions into low-valence complex ferrous ions. The complex ferrous ions in the aqueous solution are easily oxidized by oxygen, so that the complex ferrous ion solution directly performs gas-liquid contact reaction with air, and the complex ferrous ions in the aqueous solution are oxidized into complex ferric ions by utilizing the oxygen in the air.
In the complex iron desulfurization tower, a circulating system adopts the redox property of an alkaline complex iron catalyst to absorb H2S in acid gas. H2S is directly oxidized by complex iron to generate elemental sulfur, the complex iron is converted into complex ferrous, then air is blown into a regeneration settling tank to oxidize the complex ferrous in the alkaline absorbent by the air, so that the complex ferrous in the absorbent is converted into the complex iron for regeneration and reuse.
At present, a spray type complex iron desulfurization tower generally adopts a mode of circularly pumping complex iron desulfurization solution by a circulating pump, the complex iron desulfurization solution has strong corrosivity and is easy to corrode the circulating pump, and meanwhile, the complex iron solution has high viscosity and is easy to cause the blockage of the circulating pump.
SUMMERY OF THE UTILITY MODEL
To the problem among the correlation technique, the utility model provides a doctor solution self-loopa complex iron desulfurizing tower that doctor solution cyclic utilization, production efficiency are high, the environmental protection is profitable.
In order to achieve the technical purpose, the technical scheme of the utility model is as follows:
an automatic circulating absorption complex iron desulfurization tower comprises a desulfurization tower body, wherein a pipeline at the top end of the desulfurization tower body is connected with an air inlet, a filter screen is arranged at the top end of the desulfurization tower body, and the pipeline of the filter screen is connected with a first control valve; the first end of the first control valve is connected with the first end of the second control valve through a liquid return pipeline, the first end of the second control valve is connected with a liquid storage tank through a pipeline, and the liquid storage tank is connected with a spraying pipe through a pipeline; the second end of the first control valve is connected with a gas-liquid separator through a gas pipeline, one end of the first control valve is connected with the gas outlet through a pipeline, and the other end of the first control valve is connected with the second end of the second control valve through a pipeline.
Further, the spray pipe is arranged in the tower body of the desulfurizing tower.
Further, a spray head is arranged on the spray pipe.
Further, the gas pipeline and the liquid return pipeline are made of stainless steel and corrosion-resistant materials.
Furthermore, programmable control devices are arranged on the first control valve and the second control valve.
The utility model has the advantages that: the automatic circulating absorption complex iron desulfurization tower reduces circulating pump equipment, directly utilizes the pressure of the feed gas to recycle the complex iron solution, and avoids the problems of corrosion, blockage and the like caused by using a circulating pump; the fluctuation resistance of the system is strong, and for the traditional desulphurization device, when the fluctuation of the content of the hydrogen sulfide in the feed gas is large, the fluctuation of the content of the hydrogen sulfide in the purified gas at the outlet is large, even exceeds the standard. The complex iron has high sulfur capacity, and the desulfurization device can completely and automatically process the fluctuation condition without manually changing the operation and influencing the desulfurization rate; the operation cost is low, and because the complex iron catalysts in various agents used in the desulfurization process can be recycled and have no side reaction, only a small amount of complex iron catalysts lost in the desulfurization process need to be supplemented; the complex iron catalyst has high selectivity and low production of secondary salt. In the complex iron desulfurization, complex iron ions oxidize hydrogen sulfide into sulfur, so that the desulfurization process has few side reactions and long service life of the reagent; the desulfurization working solution has high sulfur capacity, and the complex iron desulfurizer is adopted, so that the sulfur capacity of the desulfurizer circulating solution is not influenced by carbon dioxide, the circulating solution amount can be obviously reduced, the equipment size is reduced, and the investment and the operation cost are reduced; because the working sulfur capacity is large and the equipment is small, skid-mounted can be effectively realized, and the skid-mounted sulfur-absorbing material is very suitable for the skid-mounted requirement of small items; the safety of the catalyst is high, and the catalyst adopted by the system is non-toxic and harmless to the environment and human bodies, and has good environmental protection benefits.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an automatic circulating absorption complex iron desulfurization tower according to an embodiment of the present invention;
in the figure: 1. a filter screen; 2. a liquid return pipeline; 3. a gas conduit; 4. a liquid storage tank; 5. a gas-liquid separator; 6. a first control valve; 7. a second control valve; 8. a spray tube; 9. an air inlet; 10. an air outlet; 11. a desulfurizing tower body.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1, an automatic circulating absorption complex iron desulfurization tower according to an embodiment of the present invention includes a desulfurization tower body 11, a top end of the desulfurization tower body 11 is connected to an air inlet 9 through a pipeline, a filter screen 1 is disposed at a top end of the desulfurization tower body 11, and the filter screen 1 is connected to a first control valve 6 through a pipeline; the first end of the first control valve 6 is connected with the first end of the second control valve 7 through a liquid return pipeline 2, the first end of the second control valve 7 is connected with the liquid storage tank 4 through a pipeline, and the liquid storage tank 4 is connected with the spray pipe 8 through a pipeline; the second end of the first control valve 6 is connected with a gas-liquid separator 5 through a gas pipeline 3, one end of the first control valve connected with the gas-liquid separator 5 is connected with a gas outlet 10 through a pipeline, and the other end of the first control valve connected with the second end of the second control valve 7 through a pipeline.
In this embodiment, the spray pipe 8 is disposed in the desulfurization tower body 11.
In this embodiment, the spray pipe 8 is provided with a spray head.
In this embodiment, the gas pipe 3 and the liquid return pipe 2 are made of stainless steel and corrosion-resistant material.
In this embodiment, the first control valve 6 and the second control valve 7 are provided with programmable control devices, and the programmable control devices can control the gas-liquid separation effect.
In order to facilitate further understanding of the above technical solutions, the working principle thereof will now be explained:
the raw material gas enters the desulfurizing tower body 11 from the gas inlet 9, the complex iron desulfurizing solution in the desulfurizing tower body 11 flows out of a filter screen 1 at the bottom of the desulfurizing tower body 11 under the action of the pressure of the raw material gas, the flowing complex iron desulfurizing solution and the gas are conveyed to a first control valve 6 through a pipeline, a detection and separation device is arranged in the control valve 6 and is used for detecting the passing gas, the qualified gas flows into a gas pipeline 3, the qualified gas flows into a gas-liquid separator 5 through the pipeline, the gas-liquid separator 5 is used for filtering and separating the flowing gas, the filtered gas flows out of a gas outlet 10 through the pipeline, and the separated liquid flows back into a liquid storage tank 4 through the pipeline; unqualified gas and complex iron desulfurization solution pass through the pipeline and carry control valve two 7 departments, detect the back separation, gas filters through vapour and liquid separator 5 and flows out from gas outlet 10, complex iron desulfurization solution then flows into liquid storage pot 4 through the pipeline, later, complex iron desulfurization solution flows back to in the desulfurizing tower body 11 through spray pipe 8, the sprinkler head on spray pipe 8 separates iron desulfurization solution into tiny water particle, the mixture of iron desulfurization solution and feed gas has been accelerated, reaction efficiency has been accelerated, productivity gain. The reacted iron desulfurization solution and the feed gas flow out of a filter screen 1 at the bottom of a tower body 11 of the desulfurization tower, and then the previous process is continuously circulated, so that the quality of the effluent gas is ensured.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An automatic circulating absorption complex iron desulfurization tower comprises a desulfurization tower body (11), and is characterized in that a top end pipeline of the desulfurization tower body (11) is connected with an air inlet (9), a filter screen (1) is arranged at the top end of the desulfurization tower body (11), and the filter screen (1) is connected with a first control valve (6) through a pipeline; the first end of the first control valve (6) is connected with the first end of the second control valve (7) through a liquid return pipeline (2), the first end of the second control valve (7) is connected with the liquid storage tank (4) through a pipeline, and the liquid storage tank (4) is connected with the spray pipe (8) through a pipeline; the second end of the first control valve (6) is connected with the gas-liquid separator (5) through a gas pipeline (3), one end of the connected gas-liquid separator (5) is connected with the gas outlet (10) through a pipeline, and the other end of the connected gas-liquid separator (5) is connected with the second end of the second control valve (7) through a pipeline.
2. The automatic circulation absorption complex iron desulfurization tower according to claim 1, wherein the spray pipe (8) is arranged in the tower body (11) of the desulfurization tower.
3. The automatic circulation absorption complex iron desulfurization tower according to claim 1, characterized in that the spray pipe (8) is provided with a spray head.
4. The automatic circulating absorption complex iron desulfurization tower according to claim 1, wherein the gas pipeline (3) and the liquid return pipeline (2) are made of stainless steel and corrosion-resistant materials.
5. The automatic circulation absorption complex iron desulfurization tower according to claim 1, characterized in that programmable control devices are arranged on the first control valve (6) and the second control valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921991473.7U CN211078473U (en) | 2019-11-18 | 2019-11-18 | Automatic circulating absorption complex iron desulfurizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921991473.7U CN211078473U (en) | 2019-11-18 | 2019-11-18 | Automatic circulating absorption complex iron desulfurizing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211078473U true CN211078473U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921991473.7U Active CN211078473U (en) | 2019-11-18 | 2019-11-18 | Automatic circulating absorption complex iron desulfurizing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211078473U (en) |
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2019
- 2019-11-18 CN CN201921991473.7U patent/CN211078473U/en active Active
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