CN216010869U - Sulfur recovery tail gas incineration purification device - Google Patents
Sulfur recovery tail gas incineration purification device Download PDFInfo
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- CN216010869U CN216010869U CN202122246004.6U CN202122246004U CN216010869U CN 216010869 U CN216010869 U CN 216010869U CN 202122246004 U CN202122246004 U CN 202122246004U CN 216010869 U CN216010869 U CN 216010869U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model provides a tail gas burns purifier is retrieved to sulphur, tail gas burns purifier is retrieved to sulphur burns purifier and burns including the first burning furnace (3), the second that connect gradually burn burning furnace (4), exhaust-heat boiler (5), tail gas preheating device (7), combustion-supporting gas preheating device (8), selective catalytic reduction denitrification facility (9), desulphurization unit (10) and steam-flue gas heat transfer device (11). The sulfur recovery tail gas incineration purification device adopts a two-section type incinerator, and has high incineration removal rate for ammonia-containing acid gas and sulfur recovery tail gas; by adopting the waste heat boiler, the tail gas preheating device and the combustion-supporting gas preheating device, the consumption of fuel gas is effectively reduced, the waste heat is recovered, the operation is safe and reliable, and the treatment cost is low.
Description
Technical Field
The utility model relates to a sulphur recovery tail gas processing technology field especially relates to a sulphur recovery tail gas burns purifier.
Background
A large amount of gas containing hydrogen sulfide is generated in the production process of petrochemical industry and coal chemical industry. This portion of the gas is typically recovered by conversion of the hydrogen sulfide to elemental sulfur using a Claus sulfur recovery process. However, the tail gas discharged from the conventional claus sulfur recovery process contains a small amount of hydrogen sulfide, liquid sulfur, various sulfur-containing compounds, and the like, and cannot be directly discharged, and therefore, a tail gas treatment device is required to perform further purification treatment.
CN211098295U discloses tail gas processing apparatus is retrieved to sulphur, the on-line screen storage device comprises a base, fixed surface is connected with a plurality of supports on the base, support upper end fixedly connected with box, the box lateral wall is equipped with two inlet ports, two equal fixedly connected with intake pipe on the inlet port lateral wall, the box upside is equipped with main intake pipe, two the equal fixed connection of intake pipe is on main intake pipe lateral wall, two intake pipe is linked together with main intake pipe, two all install the pneumatic valve in the intake pipe, the first diaphragm of fixedly connected with on the box inner wall, fixedly connected with riser on the first diaphragm, riser one end fixed connection is on the box inside wall, form gas filter chamber between horizontal version, riser and the box. This tail gas processing apparatus is retrieved to sulphur has realized more convenient change filter, and through twice absorption processing of spray room and liquid storage room, the efficiency of absorbing sulphur has been improved to a certain extent simultaneously. However, the sulfur recovery tail gas treatment device mainly applies absorption liquid for spray absorption, and the absorption liquid is required to be treated or replaced after being saturated, so that the operation cost is high.
CN212283412U discloses an ultralow discharging equipment of tail gas is retrieved to sulphur, and it includes WSA condenser, acid mist trap, sour intermediate storage tank, blender, dry process SOx/NOx control dust removal integrated device and sulphur recovery chimney, and WSA condenser upper portion import is fixed to be communicated with cold air pipeline, and WSA condenser lower part import is fixed to be communicated with and contains sour technology gas pipeline, and fixed intercommunication has first sulphur to retrieve tail gas processing pipeline between WSA condenser upper portion export and the acid mist trap lower part import. This ultralow discharging equipment of sulphur recovery tail gas adopts dry process SOx/NOx control dust removal integrated device to handle, and integrated device exists SOx/NOx control efficiency lower, and the degree of difficulty is great in the aspect of the equipment maintenance, and the stability of equipment operation, reliability scheduling problem not.
CN107441930A discloses a sulfur recovery tail gas treatment device, which comprises a first-stage process gas heat exchanger, a hydrogenation reactor, a second-stage process gas heat exchanger, a three-stage sulfur condenser, a condensing cooler, a vapor-liquid separator and a desulfurization unit, which are connected in sequence through a tail gas conveying pipeline; a tail gas inlet of the first-stage process gas heat exchanger is connected with a tail gas outlet of a sulfur recovery process sulfur condenser; a reducing gas inlet is arranged on the tail gas conveying pipeline at the upstream of the hydrogenation reactor; the desulfurization unit is provided with a desulfurization solution circulating system. However, the hydrogenation reactor is used in the sulfur recovery tail gas treatment device, so that the treatment cost is high.
Therefore, the development of the sulfur recovery tail gas incineration purification device which has the advantages of simple and reasonable structure, safe and reliable operation and low treatment cost has great significance.
SUMMERY OF THE UTILITY MODEL
In view of the problem that exists among the prior art, the utility model provides a tail gas burns purifier is retrieved to sulphur, tail gas burns purifier is retrieved to sulphur adopts two segmentation to burn burning furnace, realizes that sulphur retrieves tail gas and contains the high efficiency of ammonia acid gas and burns and get rid of, and device simple structure is reasonable, safe and reliable, no secondary pollution has good economic benefits and environmental benefit.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a tail gas burns purifier is retrieved to sulphur, tail gas burns purifier is retrieved to sulphur burns purifier and burns burning furnace, exhaust-heat boiler, tail gas preheating device, combustion-supporting gas preheating device, selective catalytic reduction denitrification facility, desulphurization unit and steam-flue gas heat transfer device including the first burning furnace, the second that connect gradually.
The sulfur recovery tail gas incineration purification device of the utility model adopts a two-section type incinerator, which can efficiently treat sulfur recovery tail gas and ammonia-containing acid gas; the waste heat boiler, the tail gas preheating device and the combustion-supporting gas preheating device are sequentially connected behind the second incinerator, so that the consumption of fuel gas can be effectively reduced, and waste heat can be recovered; the combustion-supporting gas preheating device is connected with the selective catalytic reduction denitration device and the desulfurization device, so that the effective denitration and desulfurization of the ammonia-containing acidic gas and the sulfur recovery tail gas can be realized; the reacted flue gas enters a steam-flue gas heat exchange device for heat exchange and temperature rise and then is discharged, so that the effect of eliminating the white smoke gas can be achieved.
First burn burning furnace and second and burn length and diameter of burning furnace and confirm according to actual waste gas volume, helping fire coal tolerance and dwell time, the utility model discloses do not inject it.
Preferably, the first and second incinerators are connected by a pipe.
Preferably, the conduit is lined.
First burning furnace and second burn burning furnace and adopt the pipeline that has the inside lining to connect, and the main effect of inside lining prevents that the pipeline from corroding and has heat retaining effect.
Preferably, the first and second incinerators each independently include a horizontal type combustion chamber.
Preferably, a first combustion device is disposed on a front end central axis of the first incinerator.
Preferably, the first combustion device is provided with an acid gas inlet, a first fuel gas inlet and a first combustion-supporting gas inlet.
The temperature of first burning furnace is 1300 ~ 1400 ℃, and the first acid gas, first fuel gas and the first combustion-supporting gas that let in through first burner mainly carry out the oxygen deficiency burning wherein.
The temperature of the first incinerator is 1300-1400 ℃, for example 1300 ℃, 1310 ℃, 1330 ℃, 1350 ℃, 1380 ℃ or 1400 ℃.
Preferably, a second combustion device is disposed on a front end central axis of the second incinerator.
The effect that is provided with second burner on the front end center axis of second burning furnace can improve the combustion chamber temperature, can guarantee that the tail gas of sulphur recovery burns completely.
Preferably, the second combustion device is provided with a second fuel gas inlet and a second combustion-supporting gas inlet.
Preferably, a first sulfur recovery tail gas inlet is provided to a side of the second incinerator.
The temperature that burns burning furnace of second is 800 ~ 900 ℃, the high temperature flue gas that produces in the first burning furnace lets in the second and burns burning furnace and second fuel gas and second combustion-supporting gas, sulphur and retrieve the tail gas and mix, mainly carries out the peroxide combustion and makes the abundant schizolysis of sulphur recovery tail gas.
The temperature of the second incinerator is 800 ~ 900 ℃, for example, 800 ℃, 830 ℃, 850 ℃, 870 ℃ or 900 ℃.
Preferably, the upper part of the side wall of the tail gas preheating device is provided with a second sulfur recovery tail gas inlet, and the lower part of the side wall is provided with a sulfur recovery tail gas outlet.
Preferably, the sulfur recovery tail gas outlet is connected to the first sulfur recovery tail gas inlet by a sulfur recovery tail gas conduit.
The utility model discloses flue gas after exhaust-heat boiler cooling gets into tail gas preheating device in, retrieves the sulphur that tail gas entry got into with the second sulphur and retrieves tail gas heating to 400 ~ 600 ℃. And the heated sulfur recovery tail gas enters a second incinerator through a sulfur recovery tail gas pipeline to be subjected to peroxy combustion.
The utility model discloses retrieve the sulphur that tail gas entry got into with the second sulphur and retrieve tail gas heating to 400 ~ 600 ℃, for example can be 400 ℃, 430 ℃, 450 ℃, 480 ℃, 500 ℃, 550 ℃ or 600 ℃.
Preferably, the upper part of the side wall of the combustion-supporting gas preheating device is provided with a third combustion-supporting gas inlet, and the lower part of the side wall is provided with a combustion-supporting gas outlet.
Preferably, the first oxidant gas inlet is connected to the oxidant gas outlet via a first oxidant gas conduit.
Preferably, the second oxidant gas inlet is connected to the oxidant gas outlet via a second oxidant gas conduit.
The utility model discloses the exhaust flue gas of well tail gas preheating device gets into combustion-supporting gas preheating device, heats the combustion-supporting gas that third combustion-supporting gas entry got into. The heated combustion-supporting gas respectively enters the first incinerator and the second incinerator through the first combustion-supporting gas pipeline and the second combustion-supporting gas pipeline.
Preferably, a saturated steam inlet is arranged at the upper part of the side wall of the steam-flue gas heat exchange device, and a liquid outlet is arranged at the lower part of the side wall.
Preferably, the sulfur recovery tail gas incineration purification device further comprises a steam drum which is in circulating connection with the waste heat boiler.
Two branch pipes of comdenstion water accessible that produce in the steam pocket get into exhaust-heat boiler, the high temperature high pressure steam that exhaust-heat boiler produced also gets into the steam pocket through two branch pipes.
Preferably, the top of the steam drum is provided with a saturated steam outlet and an exhaust port.
Preferably, the saturated steam outlet is connected to the saturated steam inlet by a saturated steam pipe.
Preferably, the sulfur recovery tail gas incineration purification device further comprises an induced draft device and a chimney which are sequentially connected with the steam-flue gas heat exchange device.
The utility model provides a sulfur recovery tail gas burns purifier's application method includes following step:
acid gas, first fuel gas and first combustion-supporting gas enter the first incinerator for oxygen-deficient combustion, so that the temperature of the first incinerator reaches 1300-1400 ℃. High-temperature flue gas generated in the first incinerator enters the second incinerator through a pipeline, sulfur recovery tail gas enters the second incinerator, and peroxy combustion is carried out on the sulfur recovery tail gas and second fuel gas and second combustion-supporting gas, so that the temperature of the second incinerator is raised to 800-900 ℃. And the flue gas from the second incinerator enters a waste heat boiler for heat recovery to generate saturated steam. And the flue gas cooled by the waste heat boiler enters a tail gas preheating device to heat the sulfur recovery tail gas to 400-600 ℃, and the preheated sulfur recovery tail gas enters a second incinerator. The flue gas from the tail gas preheating device enters the combustion-supporting gas preheating device to heat combustion-supporting air, one part of the preheated combustion-supporting gas enters the first incinerator through the first combustion device, and the other part of the preheated combustion-supporting gas enters the second incinerator through the second combustion device. The flue gas from the combustion-supporting gas preheating device is cooled to 200-400 ℃, sent into a selective catalytic reduction denitration device for denitration, and then sent into a desulfurization device for desulfurization. The purified flue gas reaching the standard is heated to 100-150 ℃ by a steam-flue gas heat exchange device and then is sent into a chimney through an air inducing device to be discharged to the atmosphere.
The utility model discloses in come from combustion-supporting gas preheating device's flue gas by the cooling to 200 ~ 400 ℃, for example can be 200 ℃, 230 ℃, 250 ℃, 280 ℃, 300 ℃, 350 ℃ or 400 ℃.
The utility model discloses well purify flue gas after up to standard and heat to 100 ~ 150 ℃ through steam-flue gas heat transfer device, for example can be 100 ℃, 110 ℃, 120 ℃, 130 ℃, 140 ℃ or 150 ℃.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
(1) the sulfur recovery tail gas incineration purification device provided by the utility model adopts a two-section type incinerator, and has high incineration removal rate for ammonia-containing acid gas and sulfur recovery tail gas; the waste heat boiler, the tail gas preheating device and the combustion-supporting gas preheating device are adopted, so that the consumption of fuel gas is effectively reduced, and waste heat is recovered;
(2) the utility model provides a tail gas burns purifier is retrieved to sulphur simple structure is reasonable, safe and reliable, and sulphur is retrieved the tail gas clearance and is high, and no secondary pollution has good economic benefits and environmental benefit.
Drawings
FIG. 1 is a schematic structural view of a sulfur recovery tail gas incineration purification device provided by the present invention.
In the figure: 1-a first combustion device; 2-a second combustion device; 3-a first incinerator; 4-a second incinerator; 5-a waste heat boiler; 6-steam drum; 7-tail gas preheating device; 8-combustion-supporting gas preheating device; 9-a selective catalytic reduction denitration device; 10-a desulfurization unit; 11-steam-flue gas heat exchange device; 12-an air inducing device; 13-a chimney; 14-a sulfur recovery tail gas pipeline; 15-a first combustion-supporting gas conduit; 16-a second combustion-supporting gas conduit; 17-saturated steam pipeline.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The present invention will be described in further detail below. However, the following examples are only simple examples of the present invention, and do not represent or limit the scope of the present invention, which is defined by the appended claims.
It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly, and may for example be fixedly connected, detachably connected or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood that the present invention includes the necessary pipeline, conventional valve and general pump equipment for realizing the complete process, but the above contents do not belong to the main invention point of the present invention, and the skilled person can select the type based on the process flow and the equipment structure to add the layout by himself, and the present invention does not have the special requirement and limitation.
As a specific embodiment of the utility model, a sulfur recovery tail gas incineration purification device is provided, the schematic structural diagram of which is shown in figure 1. The sulfur recovery tail gas incineration purification device comprises a first incinerator 3, a second incinerator 4, a waste heat boiler 5, a tail gas preheating device 7, a combustion-supporting gas preheating device 8, a selective catalytic reduction denitration device 9, a desulfurization device 10 and a steam-flue gas heat exchange device 11 which are sequentially connected. The first incineration furnace 3 and the second incineration furnace 4 are connected by a pipe. The first incinerator 3 and the second incinerator 4 are both horizontal combustion chambers.
A first combustion device 1 is arranged on the front central axis of the first incinerator 3; the first combustion device 1 is provided with an acid gas inlet, a first fuel gas inlet and a first combustion-supporting gas inlet. A second combustion device 2 is arranged on the front end central axis of the second incinerator 4; the second combustion device 2 is provided with a second fuel gas inlet and a second combustion-supporting gas inlet; the side of the second incinerator 4 is provided with a first sulfur recovery tail gas inlet.
A second sulfur recovery tail gas inlet is formed in the upper portion of the side wall of the tail gas preheating device 7, and a sulfur recovery tail gas outlet is formed in the lower portion of the side wall; and the sulfur recovery tail gas outlet is connected with the first sulfur recovery tail gas inlet through a sulfur recovery tail gas pipeline. A third combustion-supporting gas inlet is formed in the upper portion of the side wall of the combustion-supporting gas preheating device 8, and a combustion-supporting gas outlet is formed in the lower portion of the side wall; the first combustion-supporting gas inlet is connected with the combustion-supporting gas outlet through a first combustion-supporting gas pipeline; the second combustion-supporting gas inlet is connected with the combustion-supporting gas outlet through a second combustion-supporting gas pipeline. The upper part of the side wall of the steam-flue gas heat exchange device 11 is provided with a saturated steam inlet, and the lower part of the side wall is provided with a liquid outlet.
The sulfur recovery tail gas incineration purification device also comprises a steam drum 6 which is circularly connected with the waste heat boiler 5; the top of the steam drum 6 is provided with a saturated steam outlet and an exhaust port; and the saturated steam outlet is connected with the saturated steam inlet through a saturated steam pipeline. The sulfur recovery tail gas incineration purification device further comprises an induced draft device 12 and a chimney 13 which are sequentially connected with the steam-flue gas heat exchange device 11.
The use method of the sulfur recovery tail gas incineration and purification device comprises the following steps:
the acid gas, the first fuel gas and the first combustion-supporting gas enter the first incinerator 3 for oxygen-deficient combustion, so that the temperature of the first incinerator 3 reaches 1300-1400 ℃. High-temperature flue gas generated in the first incinerator 3 enters the second incinerator 4 through a pipeline, and sulfur recovery tail gas enters the second incinerator 4 to be subjected to peroxy combustion with second fuel gas and second combustion-supporting gas, so that the temperature of the second incinerator 4 is raised to 800-900 ℃. The flue gas from the second incinerator 4 enters a waste heat boiler 5 for heat recovery, and saturated steam is generated. The flue gas cooled by the waste heat boiler 5 enters a tail gas preheating device 7 to heat the sulfur recovery tail gas to 400-600 ℃, and the preheated sulfur recovery tail gas enters a second incinerator 4. The flue gas from the tail gas preheating device 7 enters the combustion-supporting gas preheating device 8 to heat combustion-supporting air, one part of the preheated combustion-supporting gas enters the first incinerator 3 through the first combustion device 1, and the other part of the preheated combustion-supporting gas enters the second incinerator 4 through the second combustion device 2. The flue gas from the combustion-supporting gas preheating device 8 is cooled to 200-400 ℃, sent into the selective catalytic reduction denitration device 9 for denitration, and then enters the desulfurization device 10 for desulfurization. The purified flue gas reaching the standard is heated to 100-150 ℃ by a steam-flue gas heat exchange device 11 and then is sent into a chimney 13 through an induced draft device 12 to be discharged to the atmosphere.
In summary, the sulfur recovery tail gas incineration purification device provided by the utility model adopts a two-stage incinerator, so that the high-efficiency removal of ammonia-containing acid gas and sulfur recovery tail gas is realized; and the waste heat boiler, the tail gas preheating device and the combustion-supporting gas preheating device are adopted, so that the consumption of fuel gas is effectively reduced, the waste heat is recovered, and the method has good economic benefit and environmental benefit.
The applicant states that the present invention is described by the above embodiments, but the present invention is not limited to the above detailed structural features, i.e. the present invention can be implemented only by relying on the above detailed structural features. It should be clear to those skilled in the art that any modifications to the present invention, to the equivalent replacement of selected parts and the addition of auxiliary parts, the selection of specific modes, etc., all fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. The sulfur recovery tail gas incineration purification device is characterized by comprising a first incinerator (3), a second incinerator (4), a waste heat boiler (5), a tail gas preheating device (7), a combustion-supporting gas preheating device (8), a selective catalytic reduction denitration device (9), a desulfurization device (10) and a steam-flue gas heat exchange device (11) which are sequentially connected.
2. The incineration purification device of sulfur recovery tail gas according to claim 1, characterized in that the first incinerator (3) and the second incinerator (4) are connected by a pipe.
3. The sulfur recovery tail gas incineration purification device according to claim 1, characterized in that the first incinerator (3) and the second incinerator (4) each independently comprise a horizontal combustion chamber.
4. The incineration purification device for sulfur recovery tail gas according to claim 2, characterized in that a first combustion device (1) is arranged on the front end central axis of the first incinerator (3);
the first combustion device (1) is provided with an acid gas inlet, a first fuel gas inlet and a first combustion-supporting gas inlet;
a second combustion device (2) is arranged on the central axis of the front end of the second incinerator (4);
the second combustion device (2) is provided with a second fuel gas inlet and a second combustion-supporting gas inlet.
5. The sulfur recovery tail gas incineration purification device according to claim 2, characterized in that a first sulfur recovery tail gas inlet is provided to a side of the second incinerator (4).
6. The incineration purification device for the sulfur recovery tail gas as recited in claim 5, wherein the tail gas preheating device (7) is provided with a second sulfur recovery tail gas inlet at the upper part of the side wall and a sulfur recovery tail gas outlet at the lower part of the side wall;
the sulfur recovery tail gas outlet is connected with the first sulfur recovery tail gas inlet through a sulfur recovery tail gas pipeline (14).
7. The sulfur recovery tail gas incineration purification device according to claim 4, wherein a third combustion-supporting gas inlet is arranged at the upper part of the side wall of the combustion-supporting gas preheating device (8), and a combustion-supporting gas outlet is arranged at the lower part of the side wall;
the first combustion-supporting gas inlet is connected with the combustion-supporting gas outlet through a first combustion-supporting gas pipeline (15);
the second combustion-supporting gas inlet is connected with the combustion-supporting gas outlet through a second combustion-supporting gas pipeline (16).
8. The incineration purification device for the sulfur recovery tail gas as recited in claim 1, wherein the upper part of the side wall of the steam-flue gas heat exchange device (11) is provided with a saturated steam inlet, and the lower part of the side wall is provided with a liquid outlet.
9. The sulfur recovery tail gas incineration purification device according to claim 8, characterized in that it further comprises a steam drum (6) in circulation connection with a waste heat boiler (5);
the top of the steam drum (6) is provided with a saturated steam outlet and an exhaust port;
the saturated steam outlet is connected with the saturated steam inlet through a saturated steam pipeline (17).
10. The incineration purification device for the sulfur recovery tail gas according to claim 1, further comprising an air inducing device (12) and a chimney (13) which are sequentially connected with the steam-flue gas heat exchange device (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122246004.6U CN216010869U (en) | 2021-09-16 | 2021-09-16 | Sulfur recovery tail gas incineration purification device |
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| CN202122246004.6U CN216010869U (en) | 2021-09-16 | 2021-09-16 | Sulfur recovery tail gas incineration purification device |
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| CN216010869U true CN216010869U (en) | 2022-03-11 |
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