CN210544389U - Multifunctional integrated wet desulphurization device - Google Patents
Multifunctional integrated wet desulphurization device Download PDFInfo
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- CN210544389U CN210544389U CN201921380715.9U CN201921380715U CN210544389U CN 210544389 U CN210544389 U CN 210544389U CN 201921380715 U CN201921380715 U CN 201921380715U CN 210544389 U CN210544389 U CN 210544389U
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Abstract
The utility model discloses a multifunctional integrated wet desulphurization device, which comprises a high-efficiency reactor, a desulphurization tower and a base, wherein the desulphurization tower is fixedly arranged above the base, the high-efficiency reactor is externally hung on the side wall of the air inlet end of the desulphurization tower, the joint of the high-efficiency reactor and the desulphurization tower is provided with an inlet gas-liquid separator positioned in the tower, and a nozzle is arranged inside the high-efficiency reactor; the desulfurization tower is internally provided with a desulfurization purifier outlet, a demister, an absorption desulfurization section, a pregnant solution tank section and a barren solution tank section in sequence from the top to the bottom, and the side wall of the pregnant solution tank section is provided with a pregnant solution outlet; the utility model discloses a with high efficiency reactor, vapour and liquid separator, demister, absorption desulfurization section, rich liquor groove, barren liquor groove etc. combine together, the area that significantly reduces through set up the nozzle in high efficiency reactor, furthest improves desulfurization efficiency, through setting up the rich liquor export that is in high-order, but the rich liquor direct flow advances low level regeneration tank, reduces the operation energy consumption.
Description
Technical Field
The utility model belongs to the technical field of sweetener, especially, relate to a multi-functional integrated wet flue gas desulfurization device.
Background
The energy structure of China is characterized in that the coal is rich, the oil is deficient, the gas is deficient, and the coal consumption accounts for nearly 70% of the total energy consumption. In recent years, with the stricter requirements of national environmental protection policies, the environmental protection problem in the coal utilization process is prominent, and the coal quality in China is different, and the annual output of low-rank coal is about 20 hundred million tons, so that the nation vigorously advocates clean, efficient, graded and quality-classified utilization of coal. In 2016, the national energy agency has developed a plan of 'thirteen five' for demonstration of coal deep processing industry, '2015-2020 for action plan of clean and efficient utilization of coal,' thirteen five 'development guidelines for modern coal chemical industry' compiled by the union of petrochemical industries, and the like, and the clean and efficient quality-divided utilization of coal is taken as one of key tasks definitely. The classified and quality-divided utilization of coal is one of the approaches for deep processing of coal, and the coal pyrolysis is a tap for the classified and quality-divided utilization of coal. Coal pyrolysis, also known as coal dry distillation or thermal decomposition, refers to the process of heating coal under the condition of isolating air to evaporate tar and coal gas in the coal to obtain tar, coal gas and semicoke (semi-coke). The produced coal tar, semi coke and coal gas can be further processed into fuel oil and high-end chemicals to realize quality-based utilization.
The coal can be divided into low-sulfur coal (less than 1.0 wt%), medium-sulfur coal (1.0-2.0 wt%), medium-high-sulfur coal (2.0-3.0 wt%) and high-sulfur coal (more than 3.0 wt%) according to the sulfur content. After coal pyrolysis, 45-65% of sulfur is fixed in solid coal coke, 15-25% of sulfur enters liquid coal tar, and 15-25% of sulfur enters gas which is a gaseous pyrolysis product. Coal (coal)The coal gas generated in the pyrolysis process contains a large amount of hydrogen, methane, carbon monoxide and carbon dioxide, and a small amount of components and impurities (tar, benzene, naphthalene, ammonia and the like) above C2, and the tar generated along with the coal pyrolysis needs to be further hydrogenated to obtain high-quality fuel oil, chemicals and the like. Sulfur in coal gas with H2S is main and also contains a small amount of organic sulfur such as carbonyl sulfur, carbon disulfide, methyl sulfur and the like. The presence of sulfur in these forms causes corrosion of pipeline equipment and poisoning of various synthesis catalysts, and sulfur in the gas must be removed to ensure the subsequent processing and utilization of the gas.
Aiming at the characteristics of sulfur components in coal gas, the currently common wet desulphurization, particularly the wet desulphurization by a sodium carbonate alkali liquor method (including an ammonia water method), can remove sulfur to 100mg/Nm3Hereinafter, the amount of the catalyst component added to the desulfurization solution can be reduced to 20mg/Nm at the minimum3The following. The conventional sodium carbonate alkaline solution method (including an ammonia solution method) desulfurization equipment comprises an absorption tower, an oxidation regeneration tower, a rich liquor tank, a lean liquor tank, a sulfur foam tank, a sulfur melting kettle and the like, and the conventional filler absorption tower has high mass transfer efficiency due to the fact that the coal gas quantity is generally large, particularly for high-concentration sulfur-containing coal gas, so that the equipment is large in size, the occupied area of the whole device is large, the rich liquor sulfur capacity is low, the regeneration circulation quantity of desulfurization liquor is large, and a large amount of transfer needs to be carried out by using a delivery pump, so that a large amount of electric energy consumption is generated, and the equipment investment and the operation cost of the whole set of sodium carbonate alkaline solution method (including an ammonia solution method) wet desulfurization device. Therefore, a multifunctional integrated wet desulphurization device is urgently needed to solve the problems.
Disclosure of Invention
The utility model aims at providing a multi-functional integrated wet desulphurization device that area is little, equipment investment is little, the running cost is low, desulfurization efficiency is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multifunctional integrated wet desulphurization device comprises a high-efficiency reactor, a desulphurization tower and a base, wherein the desulphurization tower is fixedly arranged above the base, the high-efficiency reactor is externally hung on the side wall of an air inlet end of the desulphurization tower, an air-liquid inlet separator positioned in the tower is arranged at the joint of the high-efficiency reactor and the desulphurization tower, a sulfur-containing gas inlet is formed in the top of the high-efficiency reactor, a nozzle is arranged in the high-efficiency reactor, and a nozzle liquid inlet end is connected with a desulphurization liquid inlet of the high-efficiency reactor; inside from top to bottom of desulfurizing tower sets gradually desulfurization clarifier export, demister, absorption desulfurization section, rich solution groove section and barren solution groove section, sets up the barren solution entry on the top lateral wall of desulfurizing tower, sets up the rich solution export on the lateral wall of rich solution groove section, sets up barren solution groove section entry and barren solution groove section export on the lateral wall of barren solution groove section.
Further, the device also comprises a rich liquid tank section liquid level meter arranged on the side wall of the rich liquid tank section and a lean liquid tank section liquid level meter arranged on the side wall of the lean liquid tank section.
Furthermore, the absorption desulfurization section is provided with an absorption desulfurization I section, and a filler for enhancing gas-liquid mass transfer is filled in the absorption desulfurization I section.
Furthermore, the absorption desulfurization section is provided with an absorption desulfurization I section and an absorption desulfurization II section, and the absorption desulfurization II section is filled with filler for enhancing gas-liquid mass transfer.
Further, the filler for enhancing gas-liquid mass transfer is bulk filler or regular filler.
Further, a gas-liquid redistributor is arranged at the boundary of the absorption desulfurization section I and the absorption desulfurization section II.
Further, the height ratio of the absorption desulfurization section I to the absorption desulfurization section II is 1: 1-1: 4, preferably 1: 2.
Further, the nozzles are 1 layer or 2 layers.
Further, the nozzle installation angle is 45-120 degrees, and preferably 90 degrees.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model integrates the high-efficiency reactor, the gas-liquid separator, the demister, the absorption desulfurization section, the gas-liquid redistributor, the pregnant solution tank, the barren solution tank and the like into a whole, has compact integral structure, integrates the equipment into a whole, and greatly reduces the occupied area; smooth airflow flow, reduced resistance, energy saving, consumption reduction, high utilization rate of each part, saving of a large amount of materials and more equipment investment saving.
2. The utility model discloses set up high-efficient reactor, utilized its special construction, inside nozzle spun doctor solution forms the foamy region, has increased gas-liquid area of contact, has improved desulfurization efficiency by a wide margin, has improved the sulfur capacity of doctor solution to furthest.
3. The utility model discloses a rich liquor export at rich liquor groove section position is in the high level, and the rich liquor can directly advance low level regeneration groove to need not set up rich liquid pump, reduced the power consumption, the operation energy consumption is lower.
Drawings
Fig. 1 is a schematic view of a multifunctional integrated wet desulphurization device in an embodiment of the present invention.
In the figure: 1 is a sulfur-containing gas inlet, 2 is a high-efficiency reactor, 3 is a high-efficiency reactor desulfurizing liquid inlet, 4 is a nozzle, 5 is an inlet gas-liquid separator, 6 is an absorption desulfurization I section, 7 is a gas-liquid redistributor, 8 is an absorption desulfurization II section, 9 is a demister, 10 is a desulfurization purified gas outlet, 11 is a barren solution inlet, 12 is a desulfurizing tower, 13 is a pregnant solution groove section, 14 is a pregnant solution groove section liquid level meter, 15 is a pregnant solution outlet, 16 is a barren solution groove section inlet, 17 is a barren solution groove section, 18 is a barren solution groove section outlet, 19 is a barren solution groove section liquid level meter, and 20 is a base.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Referring to fig. 1, a multifunctional integrated wet desulphurization device comprises a high-efficiency reactor 2, a desulphurization tower 12 and a base 20, wherein the desulphurization tower 12 is fixedly arranged above the base 20, the high-efficiency reactor 2 is externally mounted on the side wall of the air inlet end of the desulphurization tower 12, an inlet gas-liquid separator 5 positioned in the tower is arranged at the joint of the high-efficiency reactor 2 and the desulphurization tower, a sulfur-containing gas inlet 1 is arranged at the top of the high-efficiency reactor 2, a nozzle 4 (the nozzle has 2 layers and has an installation angle of 90 °) is internally mounted, and a liquid inlet end of the nozzle 4 is connected with a desulphurization liquid inlet 3 of the high-efficiency reactor; the desulfurization tower 12 is internally provided with a desulfurization purifier outlet 10, a demister 9, an absorption desulfurization II section 8 (filled with light porcelain filler XA-1), a gas-liquid redistributor 7, an absorption desulfurization I section 6 (the height ratio of the desulfurization I section 6 to the absorption desulfurization II section is 1: 2), a rich solution groove section 13 and a lean solution groove section 17 in sequence from top to bottom, the side wall of the top of the desulfurization tower is provided with a lean solution inlet 11, the side wall of the rich solution groove section is provided with a rich solution groove section liquid level meter 14 and a rich solution outlet 15, and the side wall of the lean solution groove section is provided with a lean solution groove section inlet 16, a lean solution groove section outlet 18 and a lean solution section liquid level meter 19.
The working principle is as follows: when the device is operated, the sulfur-containing raw material gas enters the high-efficiency reactor 2 from the sulfur-containing gas inlet 1, the desulfurization liquid enters from the desulfurization liquid inlet 3 of the high-efficiency reactor and is sprayed upwards through the nozzle 4 to form a foam area, the desulfurization liquid and the sulfur-containing raw material gas from top to bottom form gas-liquid two-phase high-speed reverse turbulent flow contact, the gas-liquid two-phase contact surface area is large, the contact surfaces are continuously and rapidly updated to achieve high-efficiency heat transfer and mass transfer effects, then the gas-liquid two-phase downstream flow flows, and the absorption desulfurization reaction of turbulent flow mixing is carried out again to realize high-efficiency crude; then the gas-liquid mixture enters a multifunctional desulfurizing tower 12, gas-liquid separation is carried out through a gas-liquid separator 5 at the inlet in the tower, the desulfurizing rich solution enters a rich solution groove section 13, the rich solution is directly sent to a regeneration groove for regeneration treatment through a high-level outlet 15 of the rich solution, the regenerated barren solution enters a barren solution groove section 17 at the lower part of the desulfurizing tower 12 from a barren solution groove section inlet 16, the barren solution at the bottom of the barren solution groove section 17 is pumped to a barren solution inlet 11 at the top of the desulfurizing tower 12 by a barren solution pump of the device, the sulfur-containing gas rising from the gas-liquid separator 5 at the middle part of the multifunctional desulfurizing tower 12 is in countercurrent contact in the desulfurizing tower 12, passes through the desulfurizing absorption II section 8, the gas-liquid redistributor 7 and the desulfurizing absorption I section 6 in sequence, absorbs the semi-barren solution of lower sulfur-containing gas (the content of sulfur in the gas is reduced after high-efficiency reaction), and is pressurized and sent to the high-efficiency reactor by the high-efficiency reactor desulfurizing liquid pump for recycling.
The gas with low sulfur content separated from the gas-liquid separator 5 at the inlet of the tower and the barren liquor pumped into the barren liquor inlet 11 at the top of the desulfurizing tower 12 are sequentially subjected to desulfurization absorption reaction in the desulfurization absorption I section 6, the gas-liquid redistributor 7 and the desulfurization absorption II section 8, the purified gas rises to the demister 9 at the top of the desulfurizing tower 12, and after the mist in the gas is removed, the purified gas is sent out from the desulfurization purified gas outlet 10 at the top of the desulfurizing tower 12, so that the gas desulfurization purification process is completed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.
Claims (10)
1. The multifunctional integrated wet desulphurization device is characterized by comprising a high-efficiency reactor (2), a desulphurization tower (12) and a base (20), wherein the desulphurization tower (12) is fixedly arranged above the base (20), the high-efficiency reactor (2) is externally mounted on the side wall of an air inlet end of the desulphurization tower (12), an air-liquid inlet separator (5) positioned in the high-efficiency reactor (2) is arranged at the joint of the high-efficiency reactor (2) and the desulphurization tower, a sulfur-containing gas inlet (1) is arranged at the top of the high-efficiency reactor (2), a nozzle (4) is internally mounted, and the liquid inlet end of the nozzle (4) is connected with a desulphurization liquid inlet (3) of the high-efficiency reactor; inside from the top to the bottom of desulfurizing tower (12) sets gradually desulfurization clarifier export (10), demister (9), absorption desulfurization section, pregnant solution groove section (13) and barren solution groove section (17), set up barren solution entry (11) on the top lateral wall of desulfurizing tower, set up pregnant solution export (15) on the lateral wall of pregnant solution groove section (13), set up barren solution groove section entry (16) and barren solution groove section export (18) on barren solution groove section (17) lateral wall.
2. The apparatus of claim 1, further comprising a rich section level meter (14) disposed on a side wall of the rich section (13) and a lean section level meter (19) disposed on a side wall of the lean section (17).
3. The apparatus according to claim 1, wherein the absorption desulfurization section is provided with only an absorption desulfurization section I (6), and the absorption desulfurization section I (6) is filled with a filler for enhancing gas-liquid mass transfer.
4. The device according to claim 1, wherein the absorption desulfurization section is provided with an absorption desulfurization section I (6) and an absorption desulfurization section II (8), and the absorption desulfurization section II (8) is filled with a filler for enhancing gas-liquid mass transfer.
5. The apparatus of claim 3 or 4, wherein the packing for enhancing gas-liquid mass transfer is a bulk packing or a structured packing.
6. The apparatus according to claim 4, characterized in that a gas-liquid redistributor (7) is arranged at the boundary of the absorption desulfurization section I (6) and the absorption desulfurization section II (8).
7. The apparatus according to claim 4 or 6, wherein the height ratio of the absorption desulfurization section I (6) to the absorption desulfurization section II (8) is 1:1 to 1: 4.
8. The device according to claim 1, characterized in that the nozzles (4) are 1 or 2 layers.
9. The device according to claim 1 or 8, characterized in that the nozzle (4) is mounted at an angle of 45 ° to 120 °.
10. The device according to claim 9, characterized in that the nozzle (4) is mounted at an angle of 90 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921380715.9U CN210544389U (en) | 2019-08-23 | 2019-08-23 | Multifunctional integrated wet desulphurization device |
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| CN201921380715.9U CN210544389U (en) | 2019-08-23 | 2019-08-23 | Multifunctional integrated wet desulphurization device |
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| CN210544389U true CN210544389U (en) | 2020-05-19 |
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| CN201921380715.9U Active CN210544389U (en) | 2019-08-23 | 2019-08-23 | Multifunctional integrated wet desulphurization device |
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