CN210654616U - Liquid storage device without exhaust gas discharge - Google Patents
Liquid storage device without exhaust gas discharge Download PDFInfo
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- CN210654616U CN210654616U CN201921420780.XU CN201921420780U CN210654616U CN 210654616 U CN210654616 U CN 210654616U CN 201921420780 U CN201921420780 U CN 201921420780U CN 210654616 U CN210654616 U CN 210654616U
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Abstract
The utility model relates to a liquid storage device without exhaust emission, which comprises a liquid storage tank and is characterized in that the liquid storage tank is connected with an inert gas supplement system and an exhaust absorption system; the inert gas supplementing system leads inert gas into the liquid storage tank through an inert gas conveying pipeline, a check valve and a regulating valve group are sequentially arranged on the pipeline according to the flow direction of the gas, and then the pipeline is connected into the liquid storage tank; waste gas absorption system includes and sets up the breather valve at the liquid storage tank gas vent, and the breather valve is connected waste gas pipeline exhaust and is got into the absorption tank, sets up the check valve before getting into the absorption tank on the pipeline, and a back-off funnel is connected in the exit that gets into the absorption liquid to the pipeline. The utility model relates to a device safe, environmental protection, cost are lower.
Description
Technical Field
The utility model relates to a no exhaust emission's liquid storage device belongs to the environmental protection field.
Background
The liquid storage tank which is not easy to volatilize is directly provided with an exhaust port on the tank top, the exhaust emission is not large, and environmental protection accidents can not be caused generally. As environmental regulations become stricter, such practices are increasingly prohibited.
How to achieve the zero emission of waste gas and ensure that toxic and harmful gas cannot be discharged from the storage tank becomes the target pursued by many enterprises.
For the tail gas treatment of the volatile liquid storage tank, a set of special tail gas treatment device needs to be built, the device needs to continuously operate, and the device construction cost and the operation cost are high.
The tail gas quantity of the non-volatile liquid storage tank is very small, so that the method is obviously not suitable for the tail gas treatment. Therefore, it is necessary to develop a new technology with low cost and good effect.
Disclosure of Invention
An object of the utility model is to provide a handle a small amount of exhaust emissions's of liquid storage tank low-cost environment-friendly device.
The utility model discloses a main technical scheme: the liquid storage device without waste gas emission comprises a liquid storage tank, and is characterized in that the liquid storage tank is connected with an inert gas supplementing system and a waste gas absorbing system; the inert gas supplementing system leads inert gas into the liquid storage tank through an inert gas conveying pipeline, a check valve and a regulating valve group are sequentially arranged on the pipeline according to the flow direction of the gas, and then the pipeline is connected into the liquid storage tank; waste gas absorption system includes and sets up the breather valve at the liquid storage tank gas vent, and the breather valve is connected waste gas pipeline exhaust and is got into the absorption tank, sets up the check valve before getting into the absorption tank on the pipeline, and a back-off funnel is connected in the exit that gets into the absorption liquid to the pipeline.
Generally, a pressure gauge is installed at the top of the liquid storage tank, a regulating valve group switch is controlled according to the pressure of the pressure gauge, the pressure in the liquid storage tank is controlled, and the pressure is usually controlled between 500 Pa and 1000 Pa.
The waste gas absorption system is provided with an absorption liquid conveying pipeline and a saturated absorption liquid discharging pipeline.
The breather valve is a three-interface breather valve, and the three interfaces are respectively a suction port for connecting a liquid storage tank interface, a waste gas conveying pipeline exhalation port and emptying.
The absorption tank is provided with a gas inlet, an absorption liquid inlet, a saturated absorption liquid outlet and a vent.
The absorption tank is filled with absorption liquid and is provided with a liquid level meter and a concentration meter.
And an emptying valve is arranged at the highest point of the pipeline behind the adjusting valve group on the inert gas conveying pipeline.
The inert gas is gas which does not react with the storage medium, and comprises nitrogen, carbon dioxide, dry air and argon.
The absorption liquid is liquid capable of absorbing gas volatilized from the storage tank, and comprises water, alkali liquor and acid liquor.
The device of the utility model adopts inert gas to isolate the exhaust gas and atmosphere in the liquid storage tank, exhausts the gas in the storage tank through the breather valve, and ensures that the gas exhausted from the storage tank has no pollutant by arranging the absorption tank to absorb the toxic and harmful components in the gas; the gas entering the absorption tank reacts with the standing absorption liquid through bubbling without external energy; the absorption liquid tank is provided with a concentration meter which can judge whether the absorption liquid needs to be replaced or not according to the concentration value of the solution; the air suction port of the breather valve is communicated with the atmosphere, and the storage tank can suck air under the condition of inert gas supply failure, so that the safety of the storage tank is ensured.
The utility model relates to a device safe, environmental protection, cost are lower.
Drawings
Fig. 1 is a schematic view illustrating a connection of a liquid storage device according to an embodiment of the present invention.
In the figure, 1-inert gas conveying pipeline, 2-check valve A, 9-check valve B, 3-regulating valve group, 4-vent valve, 5-pressure gauge, 6-liquid storage tank, 7-breather valve, 8-waste gas conveying pipeline, 10-inverted funnel, 11-absorption tank, 12-absorption tank vent, 13-concentration meter, 14-liquid level meter, 15-absorption liquid conveying pipeline, 16-stop valve A, 17-stop valve B and 18-saturated absorption liquid discharge pipeline.
Detailed Description
The essential contents of the invention will be further explained below with reference to the following examples and drawings, which are only for explaining the invention and do not limit the scope of the invention.
Referring to fig. 1, the liquid storage device without exhaust emission of the following embodiment mainly includes a nitrogen gas delivery pipe 1, a check valve a2 and a check valve B9, a regulating valve group 3, a blow-down valve 4, a pressure gauge 5, a liquid storage tank 6, a breather valve 7, an exhaust gas delivery pipe 8, a back-off funnel 10, an absorption tank 11, an absorption tank vent 12, a concentration meter 13, a liquid level meter 14, an absorption liquid delivery pipe 15, a stop valve a16, a stop valve B17, and a saturated absorption liquid discharge pipe 18.
Example 1
The liquid stored in the liquid storage tank 6 is methanol, nitrogen is selected as inert gas, and water is selected as absorption liquid. A check valve A2 and a regulating valve group 3 are sequentially arranged on the nitrogen conveying pipeline 1 according to the flow direction of gas, and then the nitrogen conveying pipeline is connected to a liquid storage tank 6; a pressure gauge 5 is arranged at the top of the liquid storage tank 6, the opening and closing of the regulating valve group 3 are controlled according to the pressure of the pressure gauge 5, and the pressure in the liquid storage tank 6 is controlled to be 500-1000 Pa; and an emptying valve 4 is arranged at the highest point of the pipeline behind the regulating valve group 3 and is used for maintenance and emptying. A breather valve 7 is arranged at the exhaust port of the liquid storage tank 6, the air suction port of the breather valve 7 is emptied, and when the nitrogen supply fails, air can be sucked from the air suction port; the exhaust gas conveying pipeline 8 is connected to the expiratory port of the breather valve 7, the exhaust gas from the liquid storage tank 6 is sent into the absorption tank 11, the methanol volatilized by absorption is emptied through the vent 12 of the absorption tank, the check valve B9 is arranged before entering the absorption tank 11 on the exhaust gas conveying pipeline 8, and the outlet of the exhaust gas conveying pipeline 8 is connected with the inverted funnel 10. Judging whether the absorption liquid needs to be replaced or not according to the concentration meter 13; when needing to be changed, open stop valve B17, put certain liquid level with the absorption liquid through saturated absorption liquid discharge pipe 18, guarantee that back-off funnel 10 can not expose the liquid level, later open stop valve A16 and supply fresh water to certain liquid level (the water column produces pressure and does not exceed breather valve expiratory pressure) through absorption liquid pipeline 15, the liquid level is judged through level gauge 14. When methanol is fed into the liquid storage tank 6, pollution-free gas is discharged through the breather valve 7, the waste gas conveying pipeline 8, the check valve B9 and the inverted funnel 10, and when methanol is discharged from the nitrogen conveying pipeline 1, nitrogen is supplemented through the nitrogen conveying pipeline 1 and the check valve A2 and the regulating valve group 3, so that nitrogen sealing in the liquid storage tank 6 is maintained.
Example 2
The liquid stored in the liquid storage tank 6 is 98 percent sulfuric acid, nitrogen is selected as inert gas, and NaOH solution is selected as absorption liquid. A check valve A2 and a regulating valve group 3 are sequentially arranged on the nitrogen conveying pipeline 1 according to the flow direction of gas, and then the nitrogen conveying pipeline is connected to a liquid storage tank 6; a pressure gauge 5 is arranged at the top of the liquid storage tank 6, the opening and closing of the regulating valve group 3 are controlled according to the pressure of the pressure gauge 5, and the pressure in the liquid storage tank 6 is controlled to be 500-1000 Pa; and an emptying valve 4 is arranged at the highest point of the pipeline behind the regulating valve group 3 and is used for maintenance and emptying. A breather valve 7 is arranged at the exhaust port of the liquid storage tank 6, the air suction port of the breather valve 7 is emptied, and when the nitrogen supply fails, air can be sucked from the air suction port; the exhaust gas conveying pipeline 8 is connected to the expiratory port of the breather valve 7, the exhaust gas of the liquid storage tank 6 is sent into the absorption tank 11, the exhaust gas generated by absorption and volatilization is exhausted through the vent 12 of the absorption tank, the check valve B9 is arranged before the exhaust gas conveying pipeline 8 enters the absorption tank 11, and the outlet of the exhaust gas conveying pipeline 8 is connected with the inverted hopper 10. Judging whether the absorption liquid needs to be replaced or not according to the concentration meter 13; when needing to be changed, open stop valve 17B, put certain liquid level with the absorption liquid through saturated absorption liquid discharge pipe 18, guarantee that back-off funnel 10 can not expose the liquid level, later open stop valve A16 and pass through absorption liquid pipeline 15 and supply NaOH solution to certain liquid level (the water column produces pressure and does not exceed breather valve expiratory pressure), the liquid level passes through level gauge 14 and judges. When methanol is fed into the liquid storage tank 6, pollution-free gas is discharged through the breather valve 7, the waste gas conveying pipeline 8, the check valve B9 and the inverted funnel 10, and when 98% sulfuric acid in the nitrogen conveying pipeline 1 is discharged, nitrogen is supplemented through the nitrogen conveying pipeline 1 and the check valve A2 and the regulating valve group 3, so that the nitrogen seal in the liquid storage tank 6 is maintained.
Claims (7)
1. A liquid storage device without exhaust emission comprises a liquid storage tank, and is characterized in that the liquid storage tank is connected with an inert gas supplementing system and an exhaust gas absorbing system; the inert gas supplementing system leads inert gas into the liquid storage tank through an inert gas conveying pipeline, a check valve and a regulating valve group are sequentially arranged on the pipeline according to the flow direction of the gas, and then the pipeline is connected into the liquid storage tank; waste gas absorption system includes and sets up the breather valve at the liquid storage tank gas vent, and the breather valve is connected waste gas pipeline exhaust and is got into the absorption tank, sets up the check valve before getting into the absorption tank on the pipeline, and a back-off funnel is connected in the exit that gets into the absorption liquid to the pipeline.
2. The liquid storage device without exhaust emission of claim 1, wherein a pressure gauge is installed on the top of the liquid storage tank, and the pressure in the liquid storage tank is controlled by controlling the switch of the regulating valve group according to the pressure of the pressure gauge.
3. The exhaust-gas-emission-free liquid storage device according to claim 1, wherein the exhaust gas absorption system is provided with an absorption liquid delivery pipe and a saturated absorption liquid discharge pipe.
4. The liquid storage device without exhaust emission of claim 1, wherein the breather valve is a three-port breather valve, and the three ports are respectively a port for connecting the liquid storage tank, a port for connecting the exhaust gas delivery pipe to an exhalation port, and a port for air intake.
5. The liquid storage device without waste gas discharge according to claim 1, wherein the absorption tank is provided with a gas inlet, an absorption liquid inlet, a saturated absorption liquid discharge port and a vent.
6. The waste gas emission-free liquid storage device according to claim 1, wherein the absorption tank contains an absorption liquid and is equipped with a liquid level meter and a concentration meter.
7. The liquid storage device without exhaust emission of claim 1, wherein the inert gas delivery pipeline is provided with a blow-down valve at the highest point of the pipeline after the regulating valve group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420780.XU CN210654616U (en) | 2019-08-29 | 2019-08-29 | Liquid storage device without exhaust gas discharge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420780.XU CN210654616U (en) | 2019-08-29 | 2019-08-29 | Liquid storage device without exhaust gas discharge |
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| CN210654616U true CN210654616U (en) | 2020-06-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503393A (en) * | 2020-11-20 | 2021-03-16 | 中国建材国际工程集团有限公司 | System for automatically storing and transporting dangerous liquid |
| CN112588085A (en) * | 2020-10-20 | 2021-04-02 | 临涣焦化股份有限公司 | Tail gas treatment device and method for methanol storage tank |
| CN117101354A (en) * | 2023-08-24 | 2023-11-24 | 岳阳隆兴实业有限公司 | Method for treating chlorobutane tail gas of liquid storage tank and application of method |
-
2019
- 2019-08-29 CN CN201921420780.XU patent/CN210654616U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588085A (en) * | 2020-10-20 | 2021-04-02 | 临涣焦化股份有限公司 | Tail gas treatment device and method for methanol storage tank |
| CN112503393A (en) * | 2020-11-20 | 2021-03-16 | 中国建材国际工程集团有限公司 | System for automatically storing and transporting dangerous liquid |
| CN117101354A (en) * | 2023-08-24 | 2023-11-24 | 岳阳隆兴实业有限公司 | Method for treating chlorobutane tail gas of liquid storage tank and application of method |
| CN117101354B (en) * | 2023-08-24 | 2024-02-20 | 岳阳隆兴实业有限公司 | Method for treating chlorobutane tail gas of liquid storage tank and application of method |
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Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA PETROLEUM & CHEMICAL Corp. |
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