CN219539862U - Triethylene glycol regeneration waste gas purifying and recycling device - Google Patents
Triethylene glycol regeneration waste gas purifying and recycling device Download PDFInfo
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- CN219539862U CN219539862U CN202320972164.5U CN202320972164U CN219539862U CN 219539862 U CN219539862 U CN 219539862U CN 202320972164 U CN202320972164 U CN 202320972164U CN 219539862 U CN219539862 U CN 219539862U
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Abstract
The utility model relates to the technical field of natural gas purification, in particular to a triethylene glycol regenerated waste gas purification and recovery device, which comprises a first condensing device, a gas-liquid separation type liquid storage tank, a filter, a second condensing device and a supercharging device; the input end of the first condensing device is connected with triethylene glycol regenerated waste gas, and the output end of the first condensing device is connected with the input end of the gas-liquid separation type liquid storage tank; the gas output end of the gas-liquid separation type liquid storage tank is connected with the input end of the filter, and the liquid output end of the gas-liquid separation type liquid storage tank is connected with the sewage drain pipeline; the input end of the second condensing device is connected with the output end of the filter, the gas output end of the second condensing device is connected with the input end of the pressurizing device, and the liquid output end is connected with the gas-liquid separation type liquid storage tank; the output end of the supercharging device is connected with a natural gas transmission pipeline. The filter can filter out dust, oil and other impurities carried by the gas entering the second condenser, thereby generating a purifying effect on the gas.
Description
Technical Field
The utility model relates to the technical field of natural gas purification, in particular to a triethylene glycol regenerated waste gas purification and recovery device.
Background
Triethylene glycol dehydration is a common way of dehydration. At present, most natural gas purification plants adopt triethylene glycol (TEG) to dehydrate raw gas so as to reduce the water dew point of product gas to reach an output index, and the steam stripping regeneration method is used for realizing the regeneration of the triethylene glycol, wherein the triethylene glycol not only can absorb water, but also can generate a certain amount of regenerated waste gas in the regeneration stage of the triethylene glycol. The triethylene glycol regenerated waste gas is directly discharged into the air, and is breathed into a human body to cause harm to health, and also can cause damage to surrounding environment and equipment to different degrees, and causes energy waste and triethylene glycol loss, and also can cause certain imitation harm to staff and the like.
The patent of the utility model with the authority of publication number CN206950912U discloses a triethylene glycol regenerated tail gas treatment device, wherein regenerated tail gas is pre-separated through a first waste gas liquid separating tank, then cooled through a newly-built air cooler, and after secondary separation through a second waste gas liquid separating tank, the tail gas is pressurized by a pressurizing device and then is hermetically conveyed to a tail gas incineration unit of a factory for incineration, and waste water is discharged into a sewage disposal system for treatment, so that the problems of waste gas peculiar smell of a dewatering device, equipment, site pollution and the like are solved. However, the existing triethylene glycol regeneration tail gas treatment device is not provided with a filtering device, so that dust, oil and other impurities carried by gas cannot be filtered, the pressurized gas is conveyed to a tail gas incineration unit for incineration, the gas inevitably contains the dust, the oil and the other impurities, and the gas discharged after the combustion is still easy to pollute the atmosphere.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.
The triethylene glycol regenerated waste gas purifying and recycling device comprises a first condensing device, a gas-liquid separation type liquid storage tank, a filter, a second condensing device and a supercharging device; the input end of the first condensing device is connected with triethylene glycol regenerated waste gas, and the output end of the first condensing device is connected with the input end of the gas-liquid separation type liquid storage tank; the gas-liquid separation type liquid storage tank comprises a gas-liquid separator and a centralized liquid storage tank which are integrally arranged, the gas output end of the gas-liquid separation type liquid storage tank is connected with the input end of the filter, and the liquid output end of the gas-liquid separation type liquid storage tank is connected with a sewage drain pipeline; the input end of the second condensing device is connected with the output end of the filter, the gas output end of the second condensing device is connected with the input end of the pressurizing device, the liquid output end of the second condensing device is connected with the gas-liquid separation type liquid storage tank, and the liquid condensed by the second condensing device flows back to the gas-liquid separation type liquid storage tank and is discharged to the sewage drain pipeline; and the output end of the pressurizing device is connected with a natural gas transmission pipeline.
Further, the first condensing device is an air condenser.
Further, the centralized liquid storage tank of the gas-liquid separation type liquid storage tank is provided with a liquid level meter, the centralized liquid storage tank is connected with a sewage pump, and a sewage valve is arranged between the centralized liquid storage tank and the sewage pump.
Further, the filter comprises two filter layers which are connected in series front and back, wherein the filter cotton is adopted as the front filter layer, and the activated carbon is adopted as the rear filter layer.
Further, the second condensing device is a dry-cold type cooling condensing device, and a zero-gas consumption drainer is arranged at the liquid output end of the dry-cold type cooling condensing device.
Further, the supercharging device adopts a variable-frequency supercharger.
Furthermore, the input end and the output end of the supercharging device are both provided with pressure gauges.
Furthermore, the input end of the supercharging device is also provided with a needle-type sampling valve.
Compared with the prior art, the utility model has the beneficial effects that:
(1) according to the triethylene glycol regenerated waste gas purifying and recycling device, the filter is arranged to remove dust, oil and other impurities carried by gas entering the second condenser, so that a purifying effect is achieved on the gas, the impurities are effectively removed, and pollution caused by harmful gas emission after combustion is avoided.
(2) According to the triethylene glycol regenerated waste gas purifying and recycling device, triethylene glycol regenerated waste gas is condensed by a first condenser through a first condensing device, then enters a gas-liquid separation type liquid storage tank for separation, separated liquid is discharged into a sewage pipe network, and after fine dust, oil and other impurities are filtered out by a filter, the gas enters a second condensing device for condensation and cooling again; and after the liquid is condensed and cooled again, the liquid flows back to the gas-liquid separation type liquid storage tank and is discharged into a sewage pipe network, and after the gas is pressurized by the pressurizing device, the gas enters the natural gas self-use pipe network. The natural gas contained in the triethylene glycol regenerated waste gas is separated, recycling is achieved, and finally no peculiar smell in a station is realized.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is a schematic structural view of a triethylene glycol regenerated exhaust gas purifying and recovering apparatus in an embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a gas-liquid separation type liquid storage tank in an embodiment of the present utility model.
Fig. 3 is a schematic view of a filter in an embodiment of the present utility model.
In the figure: 1. a first condensing device; 2. a gas-liquid separation type liquid storage tank; 3. a filter; 301. filtering cotton; 302. activated carbon; 4. a second condensing device; 5. a supercharging device; 6. a sewage drain line; 7. a natural gas transmission pipeline; 8. a sewage pump; 9. a blow-down valve; 10. a pressure gauge; 11. a needle-type sampling valve; 12. a manual ball valve; 13. a single flow valve; 14. and a three-way valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Specific examples:
as shown in fig. 1, the triethylene glycol regenerated waste gas purifying and recovering device in the embodiment of the utility model comprises a first condensing device 1, a gas-liquid separation type liquid storage tank 2, a filter 3, a second condensing device 4 and a pressurizing device 5. The input end of the first condensing device 1 is connected with triethylene glycol regenerated waste gas through a three-way valve 14, and the output end of the first condensing device 1 is connected with the input end of the gas-liquid separation type liquid storage tank 2. One end of the three-way valve 14 is connected with triethylene glycol regenerated waste gas, one end of the three-way valve is connected with the input end of the first condensing device 1, and the other end of the three-way valve is communicated with the atmosphere. Specifically, the first condensing device 1 in this embodiment is an air-cooled condenser, the medium temperature is 75-100 ℃, and the heat dissipation wind speed is variable in frequency.
As shown in fig. 2, the gas-liquid separation type liquid storage tank 2 comprises a gas-liquid separator and a concentrated liquid storage tank which are integrally arranged, the gas output end of the gas-liquid separation type liquid storage tank 2 is connected with the input end of the filter 3, and the liquid output end is connected with the sewage drain pipeline 6. The input of the gas-liquid separation type liquid storage tank 2 is provided with a uniflow valve 13, the concentrated liquid storage tank of the gas-liquid separation type liquid storage tank 2 is provided with a liquid level meter and an automatic discharge (pump discharge) system, the automatic discharge (pump discharge) system comprises a sewage pump 8 and a sewage valve 9, a sewage outlet of the concentrated liquid storage tank is connected with a first sewage pipeline, and the first sewage pipeline is connected with a sewage pipeline 6. A drain pump 8 is arranged on the first drain pipe, a drain valve 9 is arranged on the first drain pipe between the concentrated liquid storage tank and the drain pump 8, and specifically, the drain valve 9 is an electric ball valve. The highest water level is 2/3 of the height of the concentrated liquid storage tank, and when the liquid level in the concentrated liquid storage tank reaches the highest water level, the sewage is automatically discharged. The bottom of the gas-liquid separation type liquid storage tank 2 is also provided with a manual ball valve 12, and the manual ball valve 12 is connected with the sewage drain pipeline 6 through a second drain pipeline to be manually discharged under the conditions of maintenance and the like.
As shown in fig. 3, the filter 3 comprises two filter layers which are connected in series front and back, wherein the filter cotton 301 is adopted as the front filter layer, and the activated carbon 302 is adopted as the rear filter layer. Specifically, the activated carbon 302 is columnar activated carbon 302 made of coal with an iodine value of 800 mg/g; the treatable air quantity is 1000m3/h, and the adsorption efficiency is 80%. The housing material of the filter 3 is 304 stainless steel. Through setting up filter 3 can filter the micronic dust, oil content and other impurity that enter into the gas in the second condenser and carry to produce the purifying action to gas, effectively get rid of impurity, thereby avoid producing harmful gas and discharge and cause the pollution after the burning.
The input end of the second condensing device 4 is connected with the output end of the filter 3, the gas output end of the second condensing device 4 is connected with the input end of the pressurizing device 5, the liquid output end of the second condensing device 4 is connected with the gas-liquid separation type liquid storage tank 2, and liquid condensed by the second condensing device 4 flows back to the gas-liquid separation type liquid storage tank 2 and is discharged to the sewage drain pipeline 6. Specifically, the second condensing device 4 is a dry-cold type cooling condensing device, and a zero gas consumption drainer is arranged at the liquid output end of the dry-cold type cooling condensing device, so that no gas loss exists, and unsmooth drainage is prevented.
In this embodiment, the output end of the supercharging device 5 is connected with the natural gas transmission pipeline 7, the supercharging device 5 adopts a variable-frequency supercharger, and pressure gauges 10 are respectively arranged at the input end and the output end of the supercharging device 5, specifically, the pressure gauges 10 are digital display pressure monitoring meters, so that the pressure values of the air inlet and the air outlet of the supercharging device 5 can be monitored in real time, the frequency of the variable-frequency supercharger is adjusted according to the measured pressure values, and the gas pressure of the input natural gas transmission pipeline 7 is ensured to be in a standard range. The input end of the pressurizing device 5 is also provided with a needle-type sampling valve 11, so that the gas before pressurization can be sampled and detected.
In this embodiment, the gas pressurized by the pressurizing device 5 enters the self-gas system of the natural gas purification plant through the natural gas transmission pipeline 7, and the self-gas system is used for incineration, so that the natural gas in the triethylene glycol regenerated waste gas can be effectively utilized.
In some other embodiments, in order to further improve the purifying effect, a second filter 3 may be disposed at the gas output end of the second condensing device 4, so as to filter out trace dust and other impurities in the natural gas, thereby achieving the effect of further purifying.
The working principle of the triethylene glycol regenerated waste gas purifying and recycling device in the embodiment is as follows:
the three-way valve 14 is designed for controlling the outlet pipeline of the rectifying column of the triethylene glycol dehydration device, and the triethylene glycol regenerated waste gas purifying and recycling device is connected into the device through the three-way valve 14, for example, when equipment is overhauled, the recycling device can be cut off through the three-way valve 14, and the triethylene glycol regenerated waste gas is directly discharged. The triethylene glycol regenerated waste gas is connected to a triethylene glycol regenerated waste gas purifying and recycling device, the triethylene glycol regenerated waste gas is condensed by a first condenser through a first condensing device 1, then enters a gas-liquid separation type liquid storage tank 2 for separation, the separated liquid is discharged into a sewage pipe network, and the gas enters a second condensing device 4 for condensing and cooling again after filtering fine dust, oil and other impurities through a filter 3; the liquid after the secondary condensation and temperature reduction flows back to the gas-liquid separation type liquid storage tank 2 and is discharged into a sewage pipe network, and the gas enters a natural gas self-use pipe network after being pressurized by the pressurizing device 5. The natural gas contained in the triethylene glycol regenerated waste gas is separated, recycling is achieved, and finally no peculiar smell in a station is realized.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The triethylene glycol regenerated waste gas purifying and recycling device is characterized by comprising a first condensing device (1), a gas-liquid separation type liquid storage tank (2), a filter (3), a second condensing device (4) and a pressurizing device (5);
the input end of the first condensing device (1) is connected with triethylene glycol regenerated waste gas, and the output end of the first condensing device is connected with the input end of the gas-liquid separation type liquid storage tank (2);
the gas-liquid separation type liquid storage tank (2) comprises a gas-liquid separator and a concentrated liquid storage tank which are integrally arranged, the gas output end of the gas-liquid separation type liquid storage tank (2) is connected with the input end of the filter (3), and the liquid output end is connected with a sewage drain pipeline (6);
the input end of the second condensing device (4) is connected with the output end of the filter (3), the gas output end of the second condensing device (4) is connected with the input end of the pressurizing device (5), the liquid output end is connected with the gas-liquid separation type liquid storage tank (2), and the liquid condensed by the second condensing device (4) flows back to the gas-liquid separation type liquid storage tank (2) and is discharged to the sewage drain pipeline (6);
the output end of the supercharging device (5) is connected with a natural gas transmission pipeline (7).
2. The triethylene glycol regeneration flue gas purification and recovery device according to claim 1, wherein the first condensing device (1) is an air condenser.
3. The triethylene glycol regeneration waste gas purification and recovery device according to claim 1, wherein the concentrated liquid storage tank of the gas-liquid separation type liquid storage tank (2) is provided with a liquid level meter, the concentrated liquid storage tank is connected with a sewage pump (8), and a sewage valve (9) is arranged between the concentrated liquid storage tank and the sewage pump (8).
4. The triethylene glycol regenerated waste gas purifying and recycling device according to claim 1, wherein the filter (3) comprises two filter layers which are connected in series front and back, wherein the filter cotton (301) is adopted as the front filter layer, and the activated carbon (302) is adopted as the rear filter layer.
5. The triethylene glycol regeneration waste gas purifying and recycling device according to claim 1, wherein the second condensing device (4) is a dry-cold type cooling condensing device, and a zero gas consumption drainer is arranged at the liquid output end of the dry-cold type cooling condensing device.
6. The apparatus according to claim 1, wherein the supercharging device (5) is a variable-frequency supercharger.
7. The triethylene glycol regeneration waste gas purifying and recycling device according to claim 6, wherein the pressure gauge (10) is arranged at the input end and the output end of the pressurizing device (5).
8. The triethylene glycol regeneration exhaust gas purification and recovery device according to claim 1, wherein the input end of the pressurizing device (5) is further provided with a needle-type sampling valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320972164.5U CN219539862U (en) | 2023-04-26 | 2023-04-26 | Triethylene glycol regeneration waste gas purifying and recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320972164.5U CN219539862U (en) | 2023-04-26 | 2023-04-26 | Triethylene glycol regeneration waste gas purifying and recycling device |
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| Publication Number | Publication Date |
|---|---|
| CN219539862U true CN219539862U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320972164.5U Active CN219539862U (en) | 2023-04-26 | 2023-04-26 | Triethylene glycol regeneration waste gas purifying and recycling device |
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| CN (1) | CN219539862U (en) |
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- 2023-04-26 CN CN202320972164.5U patent/CN219539862U/en active Active
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