CN211913314U - Single-tower multi-region efficient desulfurization system - Google Patents
Single-tower multi-region efficient desulfurization system Download PDFInfo
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- CN211913314U CN211913314U CN201922369729.7U CN201922369729U CN211913314U CN 211913314 U CN211913314 U CN 211913314U CN 201922369729 U CN201922369729 U CN 201922369729U CN 211913314 U CN211913314 U CN 211913314U
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- absorption tower
- limestone slurry
- spray
- layer
- desulfurization
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 46
- 230000023556 desulfurization Effects 0.000 title claims abstract description 45
- 239000007921 spray Substances 0.000 claims abstract description 52
- 239000002002 slurry Substances 0.000 claims abstract description 48
- 238000010521 absorption reaction Methods 0.000 claims abstract description 44
- 239000006028 limestone Substances 0.000 claims abstract description 44
- 235000019738 Limestone Nutrition 0.000 claims abstract description 43
- 238000000605 extraction Methods 0.000 claims abstract description 17
- 239000000284 extract Substances 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 11
- 239000013589 supplement Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003631 expected effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to the technical field of desulfurization, in particular to a single-tower multi-region high-efficiency desulfurization system, which comprises a desulfurization absorption tower, wherein the top of the desulfurization absorption tower is provided with a plurality of spray layers, nozzles of the spray layers are connected to the bottom of the desulfurization absorption tower through pipelines to extract limestone slurry, the pipelines are provided with circulating pumps which are set as absorbing tower circulating pumps, the top of the desulfurization absorption tower is provided with four spray layers, the first spray layer limestone slurry extraction pipeline is provided with an absorbing tower circulating pump and a second spray layer, the limestone slurry extraction pipelines of the third spraying layer and the fourth spraying layer are provided with an absorption tower circulating pump and a PH measuring meter, the limestone slurry supplement box is also provided with limestone slurry, a quantitative feeding valve is arranged between the limestone slurry supplement box and the pipelines, and the nozzles of the spraying layers adopt one-way or two-way nozzles.
Description
Technical Field
The utility model belongs to the technical field of the desulfurization technique and specifically relates to a high-efficient desulfurization system of single tower multiregion.
Background
In a sulfur acid production system, the generated waste gas contains a large amount of sulfur, and in order to enable the sulfur content in the discharged gas to reach the national standard, desulfurization is required. The traditional desulfurization device has poor effect, such as activated carbon washing desulfurization, but the proportion of the activated carbon and the side product added in each washing are not easy to treat.
In the prior art, limestone-gypsum method of wet desulphurization is often adopted for desulphurization, and limestone slurry is adopted for SO in waste gas according to the chemical reaction principle2、SO3And H2S, etc. to carry out a contact reaction. However, in the existing limestone-gypsum desulphurization device adopting wet desulphurization, multiple layers of small-hole partition plates are often adopted for gas-liquid mixing, however, limestone slurry is easy to settle, the aperture of each partition plate is too small or the distance between the partition plates is too close, the limestone slurry is easy to settle on the partition plates, the partition plates are easy to block after a long time, and people are often required to disassemble, clean and install, which wastes time and labor. On the contrary, when the distance between the separation plates is too large, or the aperture of the separation plates is too small, the gas-liquid contact time is short, and the desulfurization effect is poor. And the limestone slurry is easy to settle and also easy to settle in the limestone slurry tank, and the pipeline is easy to block in the process of draining the limestone slurry into the desulfurization chamber.
The existing limestone-gypsum wet desulphurization technology adopts high liquid-gas ratio or single-tower single-circulation or single-tower double-circulation for high sulfur content in flue gas. The method achieves the expected effect, and has high power consumption and large occupied area.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a high-efficient desulfurization system of single tower multisection can realize the operation of single tower multisection, sprays the limestone slurry that the layer adopted different pH values and different concentration at the difference, reaches the purpose that area is little, energy saving and consumption greatly.
The utility model discloses a specific technical scheme as follows:
the utility model provides a high-efficient desulfurization system of single-tower multiregion, includes the desulfurization absorption tower, the top of desulfurization absorption tower is provided with the multilayer and sprays the layer, sprays the nozzle on layer and passes through pipe connection to desulfurization absorption tower bottom extraction limestone slurry, is provided with the circulating pump on the pipeline and sets for the absorption tower circulating pump.
In the technical scheme, the top of the desulfurization absorption tower is provided with the plurality of spraying layers, so that the problem of large occupied area can be solved, and the purposes of saving energy and consuming can be realized.
The utility model discloses a further improvement, the top of desulfurization absorption tower is provided with the four layers and sprays the layer, set gradually for the first layer that sprays from low to high, the second sprays the layer, the third sprays layer and fourth and sprays the layer, the first layer that sprays is from desulfurization absorption tower bottom extraction limestone slurry, be provided with the absorption tower circulating pump on the limestone slurry extraction pipeline, the second sprays the layer, the third sprays layer and fourth and sprays the layer and from desulfurization absorption tower bottom extraction limestone slurry, be provided with absorption tower circulating pump and pH meter on the limestone slurry extraction pipeline, the connection is at the first layer that sprays, the second sprays the layer, the absorption tower circulating pump that the third sprayed layer and fourth and sprays the layer is from desulfurization absorption tower bottom different height extraction limestone slurry.
The limestone slurry extraction pipeline is also provided with a limestone slurry replenishing box filled with limestone slurry, a quantitative feeding valve is arranged between the limestone slurry replenishing box and the pipeline, and the spray nozzles of the spraying layer adopt one-way or two-way nozzles.
The utility model has the advantages that: the utility model discloses spray the layer with an absorption tower and divide into different pH district, spray layer thick liquid extraction position and be not in the extraction of conventional tower bottom, adopt the thick liquid concentration and the thick liquid pH value at different positions to extract the circulation in the absorption tower. And the addition amount of limestone slurry in each circulating pipeline is controlled, so that each spraying layer has different slurry concentration and slurry pH value. The high-layer slurry has an atmosphere with low concentration and high pH value, and the low-layer solution has an atmosphere with high concentration and low pH value. Most of the acid gas can be removed after the flue gas passes through the lower spraying layer, and the residual acid gas can be rapidly removed after the flue gas enters the high-layer slurry with low concentration and high pH value, so that the expected effect is achieved. The system can reduce the liquid-gas ratio by about 40 percent, thereby greatly saving energy and consumption. The method can complete 12000mg/Nm high-yield cultivation of the acid gas at the inlet, and the removal value is 30 mg/Nm, can solve the barriers in the prior art, and can realize the single-tower efficiency of more than 99.7%.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-desulfurization absorption tower, 2-nozzle, 3-pipeline, 4-absorption tower circulating pump, 5-quantitative feeding valve, 6-limestone slurry replenishing box and 7-pH meter.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Example (b): as shown in figure 1, a single-tower multi-region high-efficiency desulfurization system comprises a desulfurization absorption tower 1, wherein a plurality of spray layers are arranged at the top of the desulfurization absorption tower 1, nozzles 2 of the spray layers are connected to the bottom of the desulfurization absorption tower 1 through a pipeline 3 to extract limestone slurry, a circulating pump arranged on the pipeline 3 is set as an absorption tower circulating pump 4, four spray layers are arranged at the top of the desulfurization absorption tower 1 and are sequentially set as a first spray layer, a second spray layer, a third spray layer and a fourth spray layer from low to high, the first spray layer extracts limestone slurry from the bottom of the desulfurization absorption tower 1, an absorption tower circulating pump 4 is arranged on a limestone slurry extraction pipeline 3, the second spray layer, the third spray layer and the fourth spray layer extract limestone slurry from the bottom of the desulfurization absorption tower 1, an absorption tower circulating pump 4 and a pH meter 7 are arranged on the limestone slurry extraction pipeline 3, and the absorption tower circulating pump and the pH meter, And the circulating pumps 4 of the absorption tower on the second spraying layer, the third spraying layer and the fourth spraying layer extract limestone slurry from the bottoms of the desulfurization absorption towers 1 at different heights. The limestone slurry extraction pipeline 3 is also provided with a limestone slurry supplement box 6 in which limestone slurry is filled, a quantitative feeding valve 5 is arranged between the limestone slurry supplement box 6 and the pipeline 3, and the spray nozzles 2 of the spraying layer adopt one-way or two-way nozzles.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a high-efficient desulfurization system of single-tower multiregion, its characterized in that includes the desulfurization absorption tower, the top of desulfurization absorption tower is provided with the multilayer and sprays the layer, sprays the nozzle on layer and is connected to through the pipeline the desulfurization absorption tower bottom extraction limestone slurry, it sets for the absorption tower circulating pump to be provided with the circulating pump on the pipeline.
2. The single-tower multi-zone high-efficiency desulfurization system according to claim 1, wherein four spray layers are arranged on the top of the desulfurization absorption tower, and are sequentially set from low to high as a first spray layer, a second spray layer, a third spray layer and a fourth spray layer.
3. The single-tower multi-zone high-efficiency desulfurization system according to claim 2, wherein said first spray level extracts limestone slurry from the bottom of said desulfurization absorption tower, and an absorption tower circulation pump is provided on a limestone slurry extraction pipe.
4. The single-tower multi-zone high-efficiency desulfurization system according to claim 3, wherein the second spray level, the third spray level and the fourth spray level extract limestone slurry from the bottom of the desulfurization absorption tower, a limestone slurry extraction pipe is provided with an absorption tower circulation pump and a pH meter, a limestone slurry replenishing tank is further provided with limestone slurry, a dosing valve is provided between the limestone slurry replenishing tank and the pipe, and the absorption tower circulation pumps connected to the first spray level, the second spray level, the third spray level and the fourth spray level extract limestone slurry from different heights of the bottom of the desulfurization absorption tower.
5. The single-tower multi-zone high-efficiency desulfurization system according to any one of claims 1 to 4, wherein the spray nozzles of the spray layer are unidirectional or bidirectional nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922369729.7U CN211913314U (en) | 2019-12-25 | 2019-12-25 | Single-tower multi-region efficient desulfurization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922369729.7U CN211913314U (en) | 2019-12-25 | 2019-12-25 | Single-tower multi-region efficient desulfurization system |
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| CN211913314U true CN211913314U (en) | 2020-11-13 |
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| CN201922369729.7U Active CN211913314U (en) | 2019-12-25 | 2019-12-25 | Single-tower multi-region efficient desulfurization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975577A (en) * | 2019-12-25 | 2020-04-10 | 江苏天立方环保工程有限公司 | Single-tower multi-region efficient desulfurization system |
| CN113413753A (en) * | 2021-07-08 | 2021-09-21 | 西安钧泰环保设备工程有限公司 | High-sulfur coal single-tower spray layer pH value layered control device and use method |
-
2019
- 2019-12-25 CN CN201922369729.7U patent/CN211913314U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975577A (en) * | 2019-12-25 | 2020-04-10 | 江苏天立方环保工程有限公司 | Single-tower multi-region efficient desulfurization system |
| CN113413753A (en) * | 2021-07-08 | 2021-09-21 | 西安钧泰环保设备工程有限公司 | High-sulfur coal single-tower spray layer pH value layered control device and use method |
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