CN212091541U - Sulfur recovery system - Google Patents
Sulfur recovery system Download PDFInfo
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- CN212091541U CN212091541U CN202020240737.1U CN202020240737U CN212091541U CN 212091541 U CN212091541 U CN 212091541U CN 202020240737 U CN202020240737 U CN 202020240737U CN 212091541 U CN212091541 U CN 212091541U
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Abstract
The utility model relates to a coal material processing apparatus technical field specifically relates to a sulphur recovery system. The sulfur recovery system includes: the device comprises a separation device, a sulfur recovery device, a liquid storage device and an adjusting pipeline, wherein the separation device is set to be capable of carrying out gas-liquid separation treatment on hot acidic gas containing sulfur to obtain hydrogen sulfide gas and methanol liquid, the sulfur recovery device is communicated with an exhaust port of the separation device to recover the hydrogen sulfide gas, the liquid storage device is communicated with a liquid discharge port of the separation device through the adjusting pipeline to store the methanol liquid, the adjusting pipeline is provided with a plurality of circulation pipelines which are arranged in parallel, and the adjusting pipeline is set to be capable of adjusting the methanol liquid to flow into the liquid storage device from the separation device through different circulation pipelines according to liquid level change in the separation device. The sulfur recovery system is used as an adjusting pipeline by arranging a plurality of circulating pipelines, so that the adjusting pipeline can be adjusted to carry out conveying operation through different circulating pipelines according to the liquid level change of the separation device, and the stable operation of the sulfur recovery system is realized.
Description
Technical Field
The utility model relates to a coal material processing apparatus technical field specifically relates to a sulphur recovery system.
Background
The coal chemical industry needs to perform tail gas treatment on the generated hot sour gas containing sulfur so that the discharged waste gas can meet the relevant national regulations on tail gas emission. Specifically, can adopt hydrogen sulfide rich gas separator to carry out gas-liquid separation to the hot sour gas that contains sulphur and handle to the hydrogen sulfide gas that will separate out is retrieved through sulphur recovery unit, and the methanol liquid that will separate out is stored through stock solution device, thereby has avoided the direct pollution problems such as sulphur superscript emission that leads to of discharging to the atmosphere of the hot sour gas that contains sulphur.
However, in the process of discharging the hot sour gas containing sulfur in the coal chemical processing system, the discharge flow rate of the hot sour gas containing sulfur is unstable, and the flow rate of the sour gas fluctuates for about 3 to 4 hours, specifically, the fluctuation amount of the sour gas is reduced by about 200m3Left and right, the hydrogen sulfide rich-gas separator is greatly reduced, and the bottom of the hydrogen sulfide rich-gas separator is communicated with a liquid storage device through an inverted U-shaped bent pipe with a downward opening, so that hydrogen sulfide rich gas is separatedThe methanol liquid can not be pumped into the liquid storage device due to insufficient pressure when the device fluctuates to a low liquid level, so that discontinuous liquid discharge of the hydrogen sulfide gas-rich separator is caused, the acid gas quantity and the gas pressure in the hydrogen sulfide gas-rich separator are influenced, even the problems that a mechanical pump arranged between the hydrogen sulfide gas-rich separator and the liquid storage device is damaged by frequent cavitation mechanical sealing and the like are caused, the annual mechanical pump maintenance cost is extremely high, and the economic loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that the unstable sour tolerance that makes hydrogen sulfide rich gas separator appear low liquid level and pressure is not enough to make methyl alcohol liquid flow through the type of falling U return bend and enter into the machine pump that stock solution device leads to and frequently damage, maintenance cost height etc. that prior art exists, provide a sulphur recovery system, this sulphur recovery system accomplishes separator and carries methyl alcohol liquid to the stock solution device through setting up a plurality of circulation pipes as the regulating line, make the regulating line can be according to liquid level change among the separator adjusts for through different the circulation pipe carries the operation, can't carry methyl alcohol liquid through the type of falling U return bend when having avoided separator to appear low liquid level and pressure not enough, guaranteed that separator can carry methyl alcohol liquid for the stock solution device in succession, thereby realized sulphur recovery system's safety ground, And stably operates.
In order to achieve the above object, the present invention provides a sulfur recovery system, comprising: the device comprises a separation device, a sulfur recovery device, a liquid storage device and an adjusting pipeline, wherein the separation device is arranged to be capable of carrying out gas-liquid separation treatment on hot sour gas containing sulfur to obtain hydrogen sulfide gas and methanol liquid, the sulfur recovery device is communicated with an exhaust port of the separation device to recover the hydrogen sulfide gas, the liquid storage device is communicated with a liquid discharge port of the separation device through the adjusting pipeline to store the methanol liquid, the adjusting pipeline is provided with a plurality of circulation pipelines which are arranged in parallel, and the adjusting pipeline is arranged to be capable of adjusting the methanol liquid to flow into the liquid storage device from the separation device through different circulation pipelines according to liquid level change in the separation device.
Optionally, the plurality of flow pipes are arranged to extend upwards and/or downwards from the liquid outlet to different heights and then converge and communicate with the liquid storage device.
Optionally, the adjusting pipeline includes a main flow channel and a side flow channel, wherein the main flow channel is configured to be an inverted U-shaped structure with a downward opening, and the side flow channel is configured to be a U-shaped structure with an upward opening.
Optionally, the bypass pipeline may be disposed between the liquid outlet and the liquid storage device in an on-off manner.
Optionally, the bypass flow pipe is provided with a switch valve.
Optionally, the sulfur recovery system includes a control unit and a liquid level meter, the liquid level meter is installed in the separation device and is set to be capable of measuring a liquid level height in the separation device in real time, the control unit is electrically connected with the liquid level meter and the switch valve respectively, and the control unit is set to be capable of controlling the on-off of the switch valve according to the liquid level height measured by the liquid level meter.
Optionally, the flow area of the main flow channel is larger than the flow area of the bypass flow channel.
Optionally, the sulfur recovery system comprises a reflux device, an inlet of the reflux device is respectively communicated with a plurality of the circulation pipelines, an outlet of the reflux device is communicated with an inlet of the liquid storage device, and the reflux device is configured to perform reflux treatment on the methanol liquid to remove impurities in the methanol liquid.
Optionally, the reflux device includes a heat source outlet and a heat source inlet for introducing the hot sour gas containing sulfur, the heat source outlet is communicated with the liquid inlet of the separation device, and the reflux device is configured to be able to use heat of the hot sour gas containing sulfur as a heat source to heat the methanol liquid.
Optionally, the sulfur recovery system includes a heat exchange device, the heat exchange device includes a hot air flow channel and a cold air flow channel capable of exchanging heat with each other, the hot air flow channel is respectively communicated with the heat source outlet and the liquid inlet of the separation device, and the cold air flow channel is respectively communicated with the exhaust port of the separation device and the gas inlet of the sulfur recovery device.
Through the technical scheme, the utility model provides a sulphur recovery system, this sulphur recovery system accomplish separator and carry methyl alcohol liquid to stock solution device as the regulation pipeline through setting up a plurality of circulation pipelines for the regulation pipeline can be based on liquid level change among the separator adjusts for through the difference circulation pipeline carries the operation, has avoided separator to appear low liquid level and can't carry methyl alcohol liquid through the type of falling U return bend when not enough pressure, has guaranteed that separator can carry methyl alcohol liquid for stock solution device continuously, thereby has realized sulphur recovery system's safe ground, operation steadily.
Drawings
Fig. 1 is a schematic structural diagram of a sulfur recovery system provided by the present invention.
Description of the reference numerals
1. A separation device; 2. a reflux device; 3. a liquid storage device; 4. a sulfur recovery unit; 5. a heat exchange device; 6. adjusting the pipeline; 61. a main flow channel; 62. a bypass flow conduit; 63. and (4) switching on and off the valve.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
The utility model provides a sulfur recovery system, as shown in figure 1, sulfur recovery system includes: the device comprises a separation device 1, a sulfur recovery device 4, a liquid storage device 3 and an adjusting pipeline 6, wherein the separation device 1 is arranged to be capable of carrying out gas-liquid separation treatment on hot sour gas containing sulfur to obtain hydrogen sulfide gas and methanol liquid, the sulfur recovery device 4 is communicated with an exhaust port of the separation device 1 to recover the hydrogen sulfide gas, the liquid storage device 3 is communicated with a liquid discharge port of the separation device 1 through the adjusting pipeline 6 to store the methanol liquid, the adjusting pipeline 6 is provided with a plurality of circulation pipelines arranged in parallel, and the adjusting pipeline 6 is arranged to be capable of adjusting the methanol liquid to flow into the liquid storage device 3 from the separation device 1 through different circulation pipelines according to liquid level changes in the separation device 1. The hot sour gas containing sulfur is a mixed gas mainly containing hydrogen sulfide and methanol, and the temperature of the mixed gas is much higher than the normal temperature.
Through the technical scheme, the utility model provides a sulphur recovery system, this sulphur recovery system accomplish separator 1 and carry methyl alcohol liquid to stock solution device 3 as the regulation pipeline through setting up a plurality of circulation pipeline for regulating pipeline 6 can be based on liquid level change in separator 1 adjusts for through the difference the circulation pipeline carries the operation, has avoided separator 1 low liquid level to appear and can't carry methyl alcohol liquid through the type of falling U return bend when not enough pressure, has guaranteed that separator 1 can be continuously for stock solution device 3 carries methyl alcohol liquid, thereby has realized sulphur recovery system's safe ground, has moved steadily.
According to the utility model discloses, the concrete setting of adjusting pipe way 6 is not restricted by special, as long as can realize adjusting methyl alcohol liquid from separator 1 through the circulation pipeline inflow stock solution device 3 of difference according to the liquid level change in separator 1. For example, the adjusting pipeline 6 may be implemented by providing a switch valve on each flow pipeline, specifically, the opening and closing of different switch valves may be adjusted in a manual control manner according to the liquid level change in the separation device 1, so that the methanol liquid flows from the separation device 1 into the liquid storage device 3 through different flow pipelines, and of course, a control system may also be used to automatically control the opening and closing operations of different switch valves; preferably, a plurality of the circulation pipelines are arranged to be capable of extending upwards and/or downwards from the liquid outlet to different heights and then converging and communicating with the liquid storage device 3, so that different minimum hydraulic pressures are required when the methanol liquid flows into different circulation pipelines from the separation device 1, that is, the actual hydraulic pressure formed by the liquid level change in the separation device 1 can determine the highest height of the methanol liquid to be conveyed, so that the methanol liquid can automatically pass through all the circulation pipelines below the highest height in the regulating pipeline, the circulation of the methanol liquid through the regulating pipeline is controlled according to the liquid level change in the separation device 1, and the pressure in the separation device 1 tends to be stable.
Further, the adjusting pipeline 6 comprises a main flow pipeline 61 and a side flow pipeline 62, wherein the main flow pipeline 61 is arranged in an inverted U-shaped structure with a downward opening, the side flow pipeline 62 is arranged in a U-shaped structure with an upward opening, so that the height of the main flow pipeline 61 is higher than that of the side flow pipeline 62, the hydraulic pressure required by the methanol liquid flowing through the main flow pipeline 61 is correspondingly higher than that required by the methanol liquid flowing through the side flow pipeline 62, and the actual liquid level of the separating device 1 when the methanol liquid flows through the main flow pipeline 61 is correspondingly higher than that of the separating device 1 when the methanol liquid flows through the main flow pipeline 61.
In order to reasonably distribute the circulation pipeline when the methanol liquid flows through the regulating pipeline 6, the bypass circulation pipeline 62 can be arranged between the liquid outlet and the liquid storage device 3 in an on-off manner, so that the methanol liquid can be reasonably regulated according to actual needs to flow through the main circulation pipeline 61 and the bypass circulation pipeline 62 simultaneously or flow through the main circulation pipeline 61 independently when the liquid level of the separation device is high, and the process requirements are met.
Further, in order to facilitate the on/off control of the bypass duct 62, the bypass duct 62 is provided with an on/off valve 63, and the control of the bypass duct 62 can be rapidly performed by opening or closing the on/off valve 63.
In order to realize the intelligent control of the circulation path of the methanol liquid flowing through the regulating pipeline, the sulfur recovery system comprises a control unit and a liquid level meter, wherein the liquid level meter is installed on the separation device 1 and is set to be capable of measuring the liquid level height in the separation device 1 in real time, the control unit is respectively electrically connected with the liquid level meter and a switch valve 63, and the control unit is set to be capable of controlling the on-off of the switch valve 63 according to the liquid level height measured by the liquid level meter.
Furthermore, the flow area of the main flow channel is larger than that of the side flow channel, so that the liquid discharge amount (methanol liquid) required by the separation device when the liquid level is higher is larger than that required by the separation device when the liquid level is lower, the pressure in the separation device is more stable, and the sulfur recovery system can safely and stably operate.
When the separation device is used, when the separation device is at a high liquid level, the control unit controls the switch valve to be closed, and the methanol liquid flows through the main circulation pipeline 61 with higher height under the action of the hydraulic pressure of the separation device and then enters the liquid storage device 3 for storage, so that the separation device is suitable for a normal stage that a large amount of sulfur-containing hot acidic gas flows into the separation device 1 under a normal state and the flow is large, the separation device can still normally and stably operate in the normal stage by arranging the main circulation pipeline 61, and the pressure and the liquid level in the separation device are ensured to be more stable; when the liquid separating device is at a low liquid level, the control unit controls the switch valve to be opened, the methanol liquid cannot flow through the main flow pipeline 61 with a higher height under the self hydraulic action, but can flow into the liquid storage device 3 for storage through the bypass pipeline 62 with a lower height, the device is suitable for a fluctuation stage of flow reduction caused by fluctuation of hot acidic gas containing sulfur flowing into the separating device 1, the normal and stable operation of the separating device can be realized in the fluctuation stage by arranging the bypass pipeline 62, and the pressure and the liquid level in the separating device are ensured to be more stable; thereby ensuring that the separation device can stably operate in the whole operation stage. Wherein, high liquid level means that the liquid level is 30% higher than the total height of the separation device; a low level means that the liquid level is below 30% of the total height of the separation device. It can be understood that when the separation device is at an ultrahigh liquid level (higher than the above-mentioned high liquid level), the control unit controls the on-off valve to open, and the methanol liquid flows through the main flow pipeline 61 with a higher height and the bypass pipeline 62 with a lower height simultaneously under the hydraulic action of the control unit and enters the liquid storage device 3 for storage, so that the separation device is suitable for an ultrahigh flow stage when the hot sour gas containing sulfur flows into the separation device 1 in an abnormally large amount. Further, in order to enable the methanol liquid in the separation device to smoothly flow into the regulating pipeline, a hydraulic pump may be provided between the separation device and the regulating pipeline for rapidly delivering the methanol liquid from the separation device to a corresponding flow-through pipeline in the regulating pipeline.
As shown in fig. 1, the sulfur recovery system includes a reflux device 2, inlets of the reflux device 2 are respectively communicated with a plurality of the circulation pipelines, an outlet of the reflux device 2 is communicated with an inlet of the liquid storage device 3, and the reflux device 2 is configured to be capable of refluxing the methanol liquid to remove impurities in the methanol liquid. Wherein, the reflux unit 2 can be provided in various reasonable forms, for example, a reflux tank, to improve the purity of the methanol liquid flowing into the liquid storage unit 3 by performing reflux treatment on the methanol liquid.
According to the utility model discloses, separator 1 can set up to various reasonable forms, for example, be used for the separator of the hot sour gas of sulphur (i.e. hydrogen sulphide rich sulphur gas), through cooling process to make the methyl alcohol liquid among the hot sour gas of sulphur obtain methyl alcohol liquid, and then separate the processing methyl alcohol component in the hot sour gas of sulphur, be favorable to the high-efficient recovery of methyl alcohol, and carry remaining gas and collect in the sulphur recovery unit, the sulphur percentage that contains among the residual gas of introducing in the sulphur recovery unit has been improved. In order to improve the efficiency of the separation process of the hot sour gas containing sulfur in the separation device 1, the temperature of the hot sour gas containing sulfur entering the separation device 1 can be reduced through a temperature reduction pretreatment, for example, the reflux device 2 comprises a heat source outlet and a heat source inlet for introducing the hot sour gas containing sulfur, the heat source outlet is communicated with the liquid inlet of the separation device 1, the reflux device 2 is configured to be capable of utilizing the heat of the hot sour gas containing sulfur as a heat source to heat the methanol liquid, the temperature reduction pretreatment of the hot sour gas containing sulfur is facilitated, the purity of the recovered methanol liquid is improved by comprehensively utilizing the hot sour gas containing sulfur, and the operation cost of the sulfur recovery system is reduced.
Furthermore, the sulfur recovery system comprises a heat exchange device 5, the heat exchange device 5 comprises a hot air flow channel and a cold air flow channel which can exchange heat with each other, the hot air flow channel is respectively communicated with the heat source outlet and the liquid inlet of the separation device 1, the cold air flow channel is respectively communicated with the air outlet of the separation device 1 and the air inlet of the sulfur recovery device 4, the low-temperature characteristic of the hydrogen sulfide gas discharged by the separation device 1 is fully utilized, the sulfur-containing hot acidic gas subjected to preliminary cooling pretreatment by the reflux device 2 is subjected to secondary cooling pretreatment, the separation efficiency of the separation device 1 is improved, and the operation cost of the sulfur recovery system is reduced. As shown in fig. 1, the flow path of the temperature-reducing pretreatment of the hot sour gas containing sulfur is a path formed along the flow direction of 3 continuous arrows shown in fig. 1, specifically: the sulfur-containing hot acidic gas firstly enters a heat source inlet to a reflux device, is subjected to preliminary temperature reduction pretreatment in the reflux device and then is discharged out of the reflux device through a heat source outlet, and then the sulfur-containing hot acidic gas subjected to preliminary temperature reduction pretreatment enters a hot gas flow channel in a heat exchange device 5 to be subjected to secondary temperature reduction pretreatment; and finally, the sulfur-containing hot acidic gas subjected to the secondary temperature reduction pretreatment flows into a separation device for separation treatment.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. A sulfur recovery system, comprising: a separation device (1), a sulfur recovery device (4), a liquid storage device (3) and an adjusting pipeline (6), the separation device (1) is arranged to be capable of carrying out gas-liquid separation treatment on the hot sour gas containing sulfur to obtain hydrogen sulfide gas and methanol liquid, the sulfur recovery device (4) is communicated with the exhaust port of the separation device (1) to recover the hydrogen sulfide gas, the liquid storage device (3) is communicated with a liquid outlet of the separation device (1) through the adjusting pipeline (6) to store the methanol liquid, wherein the regulating line (6) has a plurality of flow conduits arranged in parallel, and the regulating line (6) is arranged to be able to regulate the flow of methanol liquid from the separation device (1) into the reservoir device (3) via the different flow conduits in dependence of a change in the liquid level in the separation device (1).
2. A sulfur recovery system according to claim 1, wherein a plurality of said flow conduits are arranged to be able to extend upwards and/or downwards from said drain opening to different heights and then converge and communicate with said liquid storage means (3).
3. A sulfur recovery system according to claim 2, wherein the conditioning duct (6) comprises a main flow duct (61) and a side flow duct (62), wherein the main flow duct (61) is arranged in a downwardly opening inverted U-shaped configuration and the side flow duct (62) is arranged in an upwardly opening U-shaped configuration.
4. A sulfur recovery system according to claim 3 wherein the bypass flow conduit (62) is switchably arranged between the drain and the reservoir (3).
5. Sulphur recovery system according to claim 4, wherein the bypass flow duct (62) is provided with an on-off valve (63).
6. The sulfur recovery system according to claim 5, comprising a control unit and a liquid level meter, wherein the liquid level meter is mounted on the separation device (1) and is configured to measure a liquid level inside the separation device (1) in real time, the control unit is electrically connected to the liquid level meter and an on-off valve (63), respectively, and the control unit is configured to control the on-off valve (63) according to the liquid level measured by the liquid level meter.
7. The sulfur recovery system of claim 3, wherein the flow area of the primary flow channel is greater than the flow area of the bypass flow channel.
8. A sulfur recovery system according to any one of claims 1-7, characterized in that it comprises a reflux unit (2), the inlets of said reflux unit (2) are respectively in communication with a plurality of said flow conduits, the outlet of said reflux unit (2) is in communication with the inlet of said reservoir unit (3), and said reflux unit (2) is arranged to enable reflux treatment of said methanol liquid for removing impurities therefrom.
9. A sulfur recovery system according to claim 8 wherein the reflux unit (2) comprises a heat source inlet for introducing the hot sour gas containing sulfur and a heat source outlet in communication with the liquid inlet of the separation unit (1), the reflux unit (2) being arranged to be able to utilize the heat of the hot sour gas containing sulfur as a heat source for heating the methanol liquid.
10. A sulfur recovery system according to claim 9, characterized in that the sulfur recovery system comprises a heat exchange device (5), said heat exchange device (5) comprising a hot gas flow channel and a cold gas flow channel capable of exchanging heat with each other, said hot gas flow channel communicating with the heat source outlet and the liquid inlet of the separation device (1), respectively, and said cold gas flow channel communicating with the gas outlet of the separation device (1) and the gas inlet of the sulfur recovery device (4), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020240737.1U CN212091541U (en) | 2020-03-03 | 2020-03-03 | Sulfur recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020240737.1U CN212091541U (en) | 2020-03-03 | 2020-03-03 | Sulfur recovery system |
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| Publication Number | Publication Date |
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| CN212091541U true CN212091541U (en) | 2020-12-08 |
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| CN202020240737.1U Active CN212091541U (en) | 2020-03-03 | 2020-03-03 | Sulfur recovery system |
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| CN (1) | CN212091541U (en) |
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