CN212292805U - Device for degassing catalytic liquid sulfur - Google Patents
Device for degassing catalytic liquid sulfur Download PDFInfo
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- CN212292805U CN212292805U CN202021522913.7U CN202021522913U CN212292805U CN 212292805 U CN212292805 U CN 212292805U CN 202021522913 U CN202021522913 U CN 202021522913U CN 212292805 U CN212292805 U CN 212292805U
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Abstract
The utility model relates to the technical field of liquid sulfur degassing, and discloses a device for catalyzing the degassing of liquid sulfur, which comprises a liquid sulfur tank for storing the liquid sulfur and a catalytic degassing tower for degassing, wherein a tank clapboard is arranged in the liquid sulfur tank and divides the liquid sulfur tank into a cache region and a finished product region; the buffer area is communicated to the catalytic cavity through a feeding pipeline, and an overflow pipe is arranged in the liquid sulfur cavity and communicated with and reflows to the finished product area; the inlet of the overflow pipe is lower than the outlet, and the pipe body comprises a pipe section which is higher than the outlet. The utility model discloses a separate the setting with the structure of liquid sulfur jar and catalytic degassing tower to set the overflow pipe to import low, the structure that the export is high has effectively promoted catalytic degassing, and has avoided the catalyst powder to flow back to the liquid sulfur jar along with the overflow pipe in. The design improves the degassing efficiency and also improves the quality of the degassed liquid sulfur product.
Description
Technical Field
The utility model relates to a liquid sulfur degasification technical field, concretely relates to sulfur recovery of oil and gas engineering, coal chemical industry and other trades especially relates to a device that catalysis liquid sulfur degasses.
Background
H is dissolved in the liquid flow generated by the Claus sulfur recovery device2S, most of the H dissolved in liquid sulfur2S is H2SxIn order to avoid environmental pollution and damage to the health of operators during the packaging, storage and transportation of sulphur products, degassing of liquid sulphur is required. The degassing techniques widely used in the prior art include air stripping (e.g. bubbling degassing process in a liquid sulfur pool) and cyclic spray degassing (generally by simultaneously adding ammonia or quinoline), and catalytic degassing, which accelerates H in liquid sulfur under the action of a catalyst2SxSo that the degassing effect is good.
The existing catalytic degassing technology is that air and liquid sulfur are directly introduced into the lower part of a degassing tower provided with a catalyst bed layer, and the liquid sulfur passes through the catalyst bed layer to react with H2SxIs decomposed into H2S and elemental sulfur, with part H2S is oxidized into simple substance by oxygen in the air, and jointly promotes H in liquid sulfur2And (4) escaping and removing S. The degassed liquid sulfur flows out from the upper part of the degassing tower, enters a liquid sulfur seal and then flows back to a finished product pool in the liquid sulfur pool.
When liquid sulfur and air pass through a catalyst bed layer, the catalyst is washed, and in addition, the catalyst is likely to be cracked or pulverized in the later period of catalytic use, because the density of the catalyst is less than that of the liquid sulfur, catalyst fragments can float on the upper layer of the liquid sulfur and are brought into a degassed liquid sulfur product through an overflow pipeline, so that the sulfur product does not reach the standard, and pipelines and equipment are seriously blocked. In addition, the existing catalytic degassing method relies on liquid sulfur pool collectionStorage of liquid sulfur, H produced during degassing2S corrodes the wall of the liquid sulfur pool, so that the liquid sulfur pool is frequently inspected and maintained, and collapses in severe cases, thereby influencing normal production operation.
Therefore, the existing equipment and method for degassing the liquid sulfur catalyst have obvious defects, and the equipment and method need to be researched and optimized to obtain a more reasonable technical scheme, so that the defects in the prior art are overcome.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art mentioned in the above, the utility model provides a device for catalyzing the degassing of liquid sulfur, which aims to use a more reliable structure as a storage container of the liquid sulfur, simultaneously optimizes the structure of a degassing tower, and can avoid the problems that the catalyst is cracked or pulverized in the degassing process of the liquid sulfur and then enters an overflow pipe along with the liquid sulfur, so as to cause the quality of the liquid sulfur product, the overflow pipe and the container.
In order to achieve the above object, the utility model discloses the technical scheme who specifically adopts is:
a device for degassing liquid sulfur in a catalytic manner comprises a liquid sulfur tank for storing liquid sulfur and a catalytic degassing tower for degassing, wherein a tank partition plate is arranged in the liquid sulfur tank and divides the liquid sulfur tank into a cache area and a finished product area; the buffer area is communicated to the catalytic cavity through a feeding pipeline, and an overflow pipe is arranged in the liquid sulfur cavity and communicated with and reflows to the finished product area; the inlet of the overflow pipe is lower than the outlet, and the pipe body comprises a pipe section which is higher than the outlet.
According to the degassing device, the liquid sulfur tank is divided into the cache area and the finished product area through the tank partition plate, liquid sulfur substances to be degassed are stored in the cache area, degassed finished liquid sulfur products are stored in the finished product area, and the finished liquid sulfur products can be conveyed to external equipment for solidification forming or direct sale; meanwhile, the catalytic degassing tower is divided into a catalytic cavity and a liquid sulfur cavity by a tower clapboard, catalytic degassing reaction is mainly carried out in the catalytic cavity, the removed sulfur-containing gas is accumulated at the inner top of the catalytic degassing tower, and the pressure value in the catalytic degassing tower is gradually increased along with the accumulation of the sulfur-containing gas; the liquid sulfur in the catalytic cavity is degassed and overflows from the tower clapboard to the liquid sulfur cavity, enters the overflow pipe under the action of air pressure, rises through the outlet of the overflow pipe and then flows back to the finished product area.
Further, the overflow pipe disclosed in the above technical solution can adopt various structures, and is optimized here, and a specific solution is proposed: the overflow pipe adopts an inverted U-shaped pipe structure. When the structure is adopted, two pipe orifices of the inverted U-shaped pipe face downwards, one pipe orifice is used as an inlet and extends to be close to the cavity bottom of the liquid sulfur cavity, and the other pipe orifice is used as an outlet and is communicated to the tank wall.
Further, before the liquid sulfur to be degassed in the buffer area is conveyed to the catalytic degassing tower, the degassing effect can be better by performing pretreatment, so that the liquid sulfur to be degassed is pretreated on the feeding pipeline, and the feeding pipeline is optimized, wherein the following feasible schemes are provided: the feeding pipeline is provided with a static mixer, an air mixing branch is arranged on the feeding pipeline, and external air enters the feeding pipeline through the air mixing branch and then is conveyed to the static mixer together with the liquid sulfur to be degassed in the cache region. Inside the static mixer, external air is mixed with the liquid sulfur to be degassed, the air being able to promote the removal of sulfur-containing gases from the liquid sulfur.
Further, the liquid phase in the liquid sulfur tank is not completely filled, so that a partial gas phase exists, a part of sulfur-containing gas exists in the gas phase, and the partial gas can be guided to be treated, and the specific treatment method is various, and the structure of the liquid sulfur tank is optimized, and the internal gas phase is subjected to removal treatment, so that the following specific feasible schemes are provided: and a gas phase pipeline is arranged on the liquid sulfur tank and communicated to the static mixer or the exhaust structure.
When the gas phase is communicated to the static mixer along with the gas phase pipeline, the gas phase is mixed with air and the degassed liquid sulfur, and then the gas phase is uniformly discharged after catalytic degassing treatment; when the gas phase is communicated with the exhaust structure along with the gas phase pipeline, the gas phase can be directly discharged to subsequent system equipment along with the exhaust structure.
Furthermore, in order to promote the outflow of the gas phase in the liquid sulfur tank, a negative pressure device for assisting the flow of the gas flow is arranged on the gas phase pipeline. Generally, negative pressure devices include, but are not limited to, suction blowers, steam ejectors, and the like.
Furthermore, after the gas phase in the liquid sulfur tank is discharged through the gas phase pipeline, in order to maintain the air pressure balance in the liquid sulfur tank, an air supply pipe is further arranged on the liquid sulfur tank, and an air valve structure is arranged in the air supply pipe, so that the external air can only enter the liquid sulfur tank in one way.
In the catalytic degassing process, the catalyst on the catalytic bed is easy to crack and pulverize, and then overflows into the liquid sulfur cavity along with the liquid sulfur, in order to prevent the catalyst from entering the overflow pipe and flowing back to the finished product area, the catalyst is removed as waste residues, specifically, a feasible scheme is given out: the tank wall of the liquid sulfur cavity is provided with a slag discharge pipeline communicated to the liquid sulfur tank, the pipe inlet of the slag discharge pipeline is flush with the tower partition plate, and the slag discharge pipeline is provided with a detachable filtering device. After the catalyst enters the liquid sulfur cavity along with the liquid sulfur, the catalyst can suspend on the surface of the liquid sulfur because the density of the catalyst is less than that of the liquid sulfur, and when the liquid level in the liquid sulfur cavity reaches the pipe inlet of the slag discharge pipeline, slag discharge treatment can be carried out; the material in the slag discharge pipeline is a mixture of liquid sulfur and a catalyst, the catalyst can be filtered by the filtering device, the degassed liquid sulfur flows into the liquid sulfur tank along the slag discharge pipeline, and a pipe outlet of the slag discharge pipeline can be communicated to a finished product area.
Further, a buffer area and a finished product area in the liquid sulfur tank are isolated from each other, but substances may not be completely removed, and substances staying in the liquid sulfur tank damage the tank, so that perfect improvement is needed to assist in clean discharge; specifically, the following possible schemes are given: a material discharging pipeline is arranged between the cache area and the finished product area, and a material discharging pump and a valve bank for controlling on-off are arranged on the material discharging pipeline.
The above description discloses a device for degassing liquid sulfur, and the present invention also discloses a method for degassing liquid sulfur, and the concrete contents are described as follows.
A method for degassing liquid sulfur by catalysis, which applies the device for degassing liquid sulfur, and comprises the following steps:
the inlet of the overflow pipe in the liquid sulfur cavity forms a liquid seal;
at least the external air from the air mixing branch and the liquid sulfur to be degassed in the buffer area are premixed in a static mixer;
the premixed mixed medium passes through a catalyst bed layer from bottom to top in a catalytic cavity, and liquid sulfur degassing is carried out under the combined action of a catalyst and air;
the removed sulfur-containing gas is gathered at the top of the catalytic degassing tower, and the degassed liquid sulfur overflows to a liquid sulfur cavity through the top of the tower clapboard and flows back to a finished product area of the liquid sulfur tank through an overflow pipe.
In the catalytic liquid sulfur degassing method disclosed above, the liquid sulfur at a certain liquid level is accumulated in the liquid sulfur cavity to seal the inlet of the overflow pipe, so as to prevent the removed sulfur-containing gas from being discharged along with the overflow pipe, and the step becomes liquid seal; after liquid seal is realized, liquid sulfur to be degassed in the buffer area is mixed with air and then conveyed to the catalytic cavity for catalytic degassing, the removed sulfur-containing gas is accumulated at the top of the catalytic degassing tower, the degassed liquid sulfur overflows into the liquid sulfur cavity for temporary storage, and the liquid sulfur flows back to the finished product area after reaching the outlet of the overflow pipe.
In the process, because the tower partition plate is arranged, the inlet of the overflow pipe is lower than the outlet, and the pipe body is higher than the outlet, the catalyst mixed with the liquid sulfur cannot flow into the liquid sulfur tank from the overflow pipe; and the arranged slag discharge pipeline can discharge the catalyst from the liquid sulfur cavity and carry out filtering treatment.
Further, the making of the liquid seal of the inlet of the overflow pipe in the liquid sulfur cavity comprises:
appropriate sulfur is put into the liquid sulfur cavity, and the liquid sulfur is heated and melted to form a liquid seal; or the overflow pipe is blocked first, and the inlet of the overflow pipe is submerged by the liquid sulfur overflowing from the catalytic cavity to form a liquid seal.
And furthermore, because the top pipe section of the overflow pipe is higher than the outlet and higher than the tower clapboard, the air pressure in the catalytic degassing tower is set for facilitating the smooth removal of the liquid sulfur, and when the air pressure value in the catalytic degassing tower reaches 70kPa, the exhaust structure at the top of the catalytic desulfurization tower is opened, and the removed sulfur-containing gas is removed.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
the utility model discloses a separate the setting with the structure of liquid sulfur jar and catalytic degassing tower to set the overflow pipe to import low, the structure that the export is high has effectively promoted catalytic degassing, and has avoided the catalyst to flow back to the liquid sulfur jar along with the overflow pipe in. The design improves the degassing efficiency and also improves the quality of the degassed liquid sulfur product.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a constituent block of an apparatus in example 1;
FIG. 2 is a schematic view of the constituent modules of the apparatus in example 2.
The reference numbers in the figures correspond to the meanings given below: 1. a buffer area; 2. a liquid sulfur degassing pump; 3. a valve block; 4. A finished product area; 5. a liquid sulfur transfer pump; 6. a tank bulkhead; 7. a liquid sulfur tank; 8. negative pressure equipment; 9. a catalytic degassing tower; 10. a filtration device; 11. a column baffle; 12. an outlet of the overflow tube; 13. a steam jacket valve; 14. an air supply pipe; 15. a static mixer; 16. and (4) an overflow pipe.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Example 1
This embodiment explains to the degasification device of liquid sulphur, on prior art's basis, optimizes the improvement with the structure of device, carries out subregion storage to liquid sulphur, separates into two cavitys with the catalysis degasification space in the catalysis degasification tower 9 simultaneously, carries out degasification and overflow respectively, can improve the efficiency of degasification to avoid the catalyst to follow overflow pipe 16 and get into in the liquid sulphur jar 7, can improve the quality of product.
Specifically, as shown in fig. 1, the apparatus for degassing liquid sulfur in catalysis disclosed in this embodiment includes a liquid sulfur tank 7 for storing liquid sulfur and a catalytic degassing tower 9 for degassing, a tank partition plate 6 is disposed in the liquid sulfur tank 7 and divides the liquid sulfur tank 7 into a buffer area 1 and a finished product area 4, a tower partition plate 11 is disposed in the catalytic degassing tower 9 and divides the catalytic degassing tower 9 into a catalysis chamber and a liquid sulfur chamber, and an exhaust structure is connected to the top of the catalytic degassing tower 9; the buffer area 1 is communicated with the catalytic cavity through a feeding pipeline, and an overflow pipe 16 is arranged in the liquid sulfur cavity and communicated with and reflows to the finished product area 4; the inlet of the overflow tube 16 is lower than the outlet and the tube body comprises a section of tube which is higher than the outlet.
In the embodiment, the feeding pipeline comprises a pipeline II and a pipeline IV; the overflow pipe 16 is communicated to the finished product area 4 through a pipeline.
According to the degassing device disclosed by the invention, the buffer area 1 and the finished product area 4 are separated from the liquid sulfur tank 7 through the tank partition plate 6, liquid sulfur substances to be degassed are stored in the buffer area 1, degassed finished liquid sulfur products are stored in the finished product area 4, and the finished liquid sulfur products can be conveyed to external equipment for solidification removal forming or direct sale, and can be conveyed outwards through a pipeline as shown in fig. 1; meanwhile, the catalytic degassing tower 9 is divided into a catalytic cavity and a liquid sulfur cavity by a tower clapboard 11, catalytic degassing reaction is mainly carried out in the catalytic cavity, the removed sulfur-containing gas is accumulated at the inner top of the catalytic degassing tower 9, and the pressure value in the catalytic degassing tower 9 is gradually increased along with the accumulation of the sulfur-containing gas; the liquid sulfur in the catalytic cavity is degassed and overflows from the tower clapboard 11 into the liquid sulfur cavity, enters an overflow pipe 16 under the action of air pressure, rises through an outlet 12 of the overflow pipe and then flows back to the finished product area 4.
Preferably, in this embodiment, a liquid sulfur degassing pump 2 and a liquid sulfur delivery pump 5 are arranged on the liquid sulfur tank 7, and the liquid sulfur to be degassed in the buffer area 1 enters the feeding pipeline through the liquid sulfur degassing pump 2 and finally enters the catalytic cavity; the liquid sulfur in the certified product area is conveyed to the outside by a liquid sulfur conveying pump 5 to carry out sulfur solidification forming or product system.
In this embodiment, the loading of the catalyst is about 0.6-1 m3The height-diameter ratio of the catalyst bed layer is 1.5-2 corresponding to 1t/h of liquid sulfur.
The overflow pipe 16 disclosed in the above technical solution can adopt various structures, and this embodiment is optimized, and a specific solution is proposed: the overflow pipe 16 adopts an inverted U-shaped pipe structure. When the structure is adopted, two pipe orifices of the inverted U-shaped pipe face downwards, one pipe orifice is used as an inlet and extends to be close to the cavity bottom of the liquid sulfur cavity, and the other pipe orifice is used as an outlet and is communicated to the tank wall.
Preferably, the distance from the inlet of the inverted U-shaped pipe to the cavity bottom of the liquid sulfur cavity is less than or equal to 300mm, and the outlet of the inverted U-shaped pipe is lower than the highest position of the overflow pipe 16 by 100 mm.
In the present embodiment, the height of the column separator 11 is set to 4.2m or more; after the distance between the inlets of the tower clapboard 11 and the inverted U-shaped pipe and the bottom of the liquid sulfur cavity is set, the liquid seal can bear the air pressure of at least 70kPa after the height of the liquid seal reaches the height of the tower clapboard.
Before the liquid sulfur to be degassed in the buffer area 1 is conveyed to the catalytic degassing tower 9, the degassing effect can be better by performing pretreatment, so that the liquid sulfur to be degassed is pretreated on the feeding pipeline, and the feeding pipeline is optimized, wherein the following feasible schemes are given: the static mixer 15 is arranged on the feeding pipeline, and an air mixing branch is arranged on the feeding pipeline, as shown in fig. 1, the air mixing branch is a pipeline I; the outside air enters the feeding pipeline through the air mixing branch and then is conveyed to the static mixer 15 together with the liquid sulfur to be degassed in the buffer area 1. Inside the static mixer 15, external air is mixed with the liquid sulphur to be degassed, the air being able to promote the removal of sulphur-containing gases from the liquid sulphur.
Set up static mixer 15 for the abundant of air, liquid sulphur and liquid sulphur jar 7 extraction gas mixes in advance, promotes oxidation degasification effect, avoids setting up the problem that the gas distributor probably blocks up the gas pocket at the liquid sulphur solidification of degasification bottom after the shut down.
The liquid phase in the liquid sulfur tank 7 is not completely filled, so that a part of gas phase exists, a part of sulfur-containing gas exists in the gas phase, and the part of gas can be guided to be treated, and the specific treatment method is various, wherein the structure of the liquid sulfur tank 7 is optimized, and the internal gas phase is subjected to removal treatment, such as the following specific feasible schemes: and a gas phase pipeline is arranged on the liquid sulfur tank 7 and communicated to the static mixer 15 or the exhaust structure.
Preferably, the orifice of the gas phase line in this embodiment is located above finished product area 4, as shown in fig. 1, the gas phase line is line r and line c.
In this embodiment, when the gas phase is communicated to the static mixer 15 along with the gas phase pipeline, the gas phase is mixed with air and degassed liquid sulfur, and then uniformly removed after catalytic degassing treatment, as shown in fig. 1, uniformly removed through a pipeline.
In order to promote the outflow of the gas phase in the liquid sulfur tank 7, a negative pressure device 8 for assisting the flow of the gas flow is arranged on the gas phase pipeline.
Preferably, the negative pressure device 8 uses a suction fan which creates a negative pressure in the gas phase pipeline, sucking out the gas phase in the liquid sulfur tank 7 and conveying it to the static mixer 15.
The overflow line 16 is connected directly to the liquid sulphur tank 7, even in extreme cases, the liquid seal is broken, partially containing H2The S gas also enters the gas phase space of the liquid sulfur tank 7, is pumped out by the exhaust fan and is sent to a closed system for circular treatment, and does not cause harm to human bodies and the environment.
After the gas phase in the liquid sulfur tank 7 is discharged through the gas phase pipeline, in order to maintain the air pressure balance in the liquid sulfur tank 7, an air supply pipe 14 is further arranged on the liquid sulfur tank 7, and an air valve structure is arranged in the air supply pipe 14, so that the external air can only enter the liquid sulfur tank 7 in one direction. Preferably, the air valve structure adopts a one-way air valve.
In the process of catalytic degassing, the catalyst on the catalytic bed is easily cracked and pulverized, and then overflows into the liquid sulfur cavity along with the liquid sulfur, in order to prevent the catalyst from entering the overflow pipe 16 and flowing back to the finished product area 4, the catalyst is removed as waste residues, specifically, a feasible scheme is given as follows: the tank wall of the liquid sulfur cavity is provided with a slag discharge pipeline communicated to the liquid sulfur tank 7, the pipe inlet of the slag discharge pipeline is flush with the tower clapboard 11, the slag discharge pipeline is provided with a detachable filtering device 10, and as shown in figure 1, the slag discharge pipeline is a pipeline (fifthly). After the catalyst enters the liquid sulfur cavity along with the liquid sulfur, the catalyst can suspend on the surface of the liquid sulfur because the density of the catalyst is less than that of the liquid sulfur, and when the liquid level in the liquid sulfur cavity reaches the pipe inlet of the slag discharge pipeline, slag discharge treatment can be carried out; the material in the slag discharge pipeline is a mixture of liquid sulfur and a catalyst, the filter device 10 can filter the catalyst, and the degassed liquid sulfur flows into the liquid sulfur tank 7 along the slag discharge pipeline, wherein the pipe outlet of the slag discharge pipeline can be communicated to the finished product area 4.
Preferably, in this embodiment, the pipe inlet of the slag discharge pipeline is flush with the upper end of the tower partition 11, the filter arranged thereon is a steam jacket filter, and the steam jacket valves 13 are arranged at the head and tail ends, so that the filter can be periodically detached and taken out for cleaning.
The buffer area 1 and the finished product area 4 in the liquid sulfur tank 7 are isolated from each other, but substances may not be completely discharged, and substances staying in the liquid sulfur tank 7 damage the tank body, so that the liquid sulfur tank needs to be improved as much as possible to assist in discharging; specifically, the following possible schemes are given: a material discharging pipeline is arranged between the cache region 1 and the finished product region 4, and a material discharging pump and a valve group 3 for controlling on-off are arranged on the material discharging pipeline. As shown in fig. 1, the discharge line is a line (b).
Preferably, the valve group 3 arranged on the discharge pipeline is a steam jacket valve 13. Steam jacket liquid sulfur jar 7 has avoided the corruption problem of traditional concrete liquid sulfur pond pool wall, and liquid sulfur jar 7's life is longer, and the risk of damage is lower.
The gas removed in the catalytic degassing tower 9 is discharged through the top exhaust structure and then is conveyed to the main combustion furnace of the sulfur recovery device for treatment. The exhaust structure here includes an exhaust pipe communicating with the catalytic degassing tower 9 and a pressure regulating valve provided on the exhaust pipe.
The liquid sulfur degassed by the integrated device can satisfy H2S is less than 10 ppm.
Example 2
The embodiment is optimized on the basis of the device for catalyzing the liquid sulfur degassing disclosed in embodiment 1, and the device disclosed in the embodiment comprises a liquid sulfur tank 7 for storing liquid sulfur and a catalytic degassing tower 9 for degassing, wherein a tank partition plate 6 is arranged in the liquid sulfur tank 7 and divides the liquid sulfur tank 7 into a buffer area 1 and a finished product area 4, a tower partition plate 11 is arranged in the catalytic degassing tower 9 and divides the catalytic degassing tower 9 into a catalytic cavity and a liquid sulfur cavity, and the top of the catalytic degassing tower 9 is connected with an exhaust structure; the buffer area 1 is communicated with the catalytic cavity through a feeding pipeline, and an overflow pipe 16 is arranged in the liquid sulfur cavity and communicated with and reflows to the finished product area 4; the inlet of the overflow tube 16 is lower than the outlet and the tube body comprises a section of tube which is higher than the outlet.
The present embodiment is different from embodiment 1 in that the gas phase line is provided differently.
As shown in fig. 2, in the present embodiment, the gas phase is communicated to the exhaust structure along with the gas phase pipeline, and can be directly discharged to subsequent system equipment along with the exhaust structure.
Preferably, in the present embodiment, a steam ejector is used as the negative pressure device 8.
The structure of the other parts in this embodiment is the same as that in embodiment 1, and will not be described herein again.
Example 3
The contents of the above examples disclose a device for degassing liquid sulfur, and the present example discloses a method for degassing liquid sulfur, which is described in detail as follows.
A method for degassing liquid sulfur by catalysis, which applies the device for degassing liquid sulfur, and comprises the following steps:
s01: the inlet of the overflow pipe 16 in the liquid sulfur cavity forms a liquid seal;
s02: at least the external air from the air mixing branch and the liquid sulfur to be degassed in the buffer zone 1 are premixed in a static mixer 15;
s03: the premixed mixed medium passes through a catalyst bed layer from bottom to top in a catalytic cavity, and liquid sulfur degassing is carried out under the combined action of a catalyst and air;
s04: the removed sulfur-containing gas is gathered at the top of the catalytic degassing tower 9, and the degassed liquid sulfur overflows to a liquid sulfur cavity through the top of the tower clapboard 11 and flows back to the finished product area 4 of the liquid sulfur tank 7 through an overflow pipe 16.
In the catalytic liquid sulfur degassing method disclosed above, the liquid sulfur at a certain liquid level is accumulated in the liquid sulfur cavity to seal the inlet of the overflow pipe 16, so as to prevent the removed sulfur-containing gas from being discharged along with the overflow pipe 16, and the step becomes liquid seal; after liquid seal is realized, liquid sulfur to be degassed in the buffer area 1 is mixed with air and then conveyed to a catalytic cavity for catalytic degassing, the removed sulfur-containing gas is accumulated at the top of a catalytic degassing tower 9, the degassed liquid sulfur overflows into the liquid sulfur cavity for temporary storage, and the liquid sulfur reaches an outlet 12 of an overflow pipe and then flows back to a finished product area 4.
In the process, because the tower clapboard 11 is arranged, and the inlet of the overflow pipe 16 is lower than the outlet, and the pipe body is higher than the outlet, the catalyst mixed with the liquid sulfur cannot flow into the liquid sulfur tank 7 from the overflow pipe 16; and the arranged slag discharge pipeline can discharge the catalyst from the liquid sulfur cavity and carry out filtering treatment.
In this embodiment, the inlet of the overflow pipe 16 in the liquid sulfur cavity is made to form a liquid seal, which may specifically adopt two ways, including the following schemes:
1. proper sulfur is put into the liquid sulfur cavity and is heated and melted to form liquid seal.
2. The overflow pipe 16 is blocked first, and the liquid sulfur overflowing from the catalytic cavity submerges the inlet of the overflow pipe 16 to form a liquid seal.
Because the top pipe section of the overflow pipe 16 is higher than the outlet and higher than the tower clapboard 11, the air pressure in the catalytic degassing tower 9 is set for facilitating the smooth removal of the liquid sulfur, and when the air pressure value in the catalytic degassing tower 9 reaches 70kPa, the exhaust structure at the top of the catalytic desulfurization tower is opened, and the removed sulfur-containing gas is removed.
The above embodiments are just examples of the present invention, but the present invention is not limited to the above alternative embodiments, and those skilled in the art can obtain other various embodiments by arbitrarily combining the above embodiments, and any one can obtain other various embodiments by the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.
Claims (9)
1. A device for degassing liquid sulfur, characterized in that: the device comprises a liquid sulfur tank (7) for storing liquid sulfur and a catalytic degassing tower (9) for degassing, wherein a tank partition plate (6) is arranged in the liquid sulfur tank (7) and divides the liquid sulfur tank (7) into a cache region (1) and a finished product region (4), a tower partition plate (11) is arranged in the catalytic degassing tower (9) and divides the catalytic degassing tower (9) into a catalytic cavity and a liquid sulfur cavity, and the top of the catalytic degassing tower (9) is connected with an exhaust structure; the buffer area (1) is communicated with the catalytic cavity through a feeding pipeline, and an overflow pipe (16) is arranged in the liquid sulfur cavity and communicated with and reflows to the finished product area (4); the inlet of the overflow pipe (16) is lower than the outlet, and the pipe body comprises a pipe section which is higher than the outlet.
2. The apparatus for catalytic liquid sulfur degassing of claim 1 wherein: the overflow pipe (16) adopts an inverted U-shaped pipe structure.
3. The apparatus for catalytic liquid sulfur degassing of claim 1 wherein: the feed line on be provided with static mixer (15), and be provided with the air mixing branch road on the feed line, outside air is passed through the air mixing branch road and is got into feed line back and all is defeated toward static mixer (15) with buffer zone (1) liquid sulphur that waits to degas.
4. The apparatus for catalytic liquid sulfur degassing of claim 3 wherein: and a gas phase pipeline is arranged on the liquid sulfur tank (7) and communicated to the static mixer (15) or the exhaust structure.
5. The apparatus for catalytic liquid sulfur degassing of claim 4 wherein: and a negative pressure device (8) for assisting the flow of the air flow is arranged on the gas phase pipeline.
6. The apparatus for catalytic liquid sulfur degassing of claim 1 wherein: and a slag discharge pipeline communicated to the liquid sulfur tank (7) is arranged on the tank wall at the liquid sulfur cavity, the pipe inlet of the slag discharge pipeline is flush with the tower partition plate (11), and a detachable filtering device (10) is arranged on the slag discharge pipeline.
7. The apparatus for catalytic liquid sulfur degassing of claim 1 wherein: a material discharging pipeline is arranged between the buffer area (1) and the finished product area (4), and a material discharging pump and a valve group (3) for controlling on-off are arranged on the material discharging pipeline.
8. The apparatus for catalytic liquid sulfur degassing of claim 1 wherein: the height of the column baffle (11) is at least 4.2 m.
9. The apparatus for catalytic liquid sulfur degassing of claim 1 wherein: the inlet of the overflow pipe (16) is at least 300mm away from the bottom of the liquid sulfur cavity.
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| CN202021522913.7U CN212292805U (en) | 2020-07-28 | 2020-07-28 | Device for degassing catalytic liquid sulfur |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115724407A (en) * | 2021-08-31 | 2023-03-03 | 中国石油化工股份有限公司 | Liquid sulfur degassing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115724407A (en) * | 2021-08-31 | 2023-03-03 | 中国石油化工股份有限公司 | Liquid sulfur degassing device and method |
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Effective date of registration: 20210302 Address after: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee before: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. |