CN210419874U - Preparation system of liquefied biological natural gas - Google Patents
Preparation system of liquefied biological natural gas Download PDFInfo
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- CN210419874U CN210419874U CN201921136011.7U CN201921136011U CN210419874U CN 210419874 U CN210419874 U CN 210419874U CN 201921136011 U CN201921136011 U CN 201921136011U CN 210419874 U CN210419874 U CN 210419874U
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Abstract
The utility model discloses a preparation system of liquefied bio-natural gas relates to natural gas preparation technical field. The system comprises: a raw material inlet pipe; the raw material air inlet pipe is provided with a first flow valve, a second flow valve and a third flow valve; the raw material air inlet pipe is a bifurcated three-head pipe and comprises a main pipe and two auxiliary pipes; the first flow valve is arranged on the main pipe; the second flow valve and the third flow valve are respectively arranged on the two secondary pipes; the auxiliary pipe where the second flow valve is located is connected to the first purification device; the auxiliary pipe where the second flow valve is located is connected to the first dehydration unit; the first dehydration unit is respectively connected with the second purification device, the second dehydration unit, the liquefaction device and the exhaust pipe through different gas transmission pipes; the first purifying device is connected with the first dehydration unit; the second purification device is connected with the second dehydration unit. The method has the advantage that the preparation process can be adjusted according to actual requirements, so that the preparation cost is saved.
Description
Technical Field
The utility model belongs to the technical field of the natural gas preparation technique and specifically relates to a preparation system of liquefied bio-natural gas.
Background
Biogas is a combustible gas produced by microbial fermentation of organic matter under anaerobic conditions, and the main component of the biogas is methane. The biogas is highly purified to obtain high-purity methane gas, which has the same components as natural gas and is generally called biological natural gas. The biological natural gas has high heat value and less pollution, and is a clean energy source. China begins to popularize and apply in the twentieth century, and can achieve favorable results at present. However, the technical level of the biogas device is lower, so that the biogas is mainly used in rural areas and mainly used for replacing daily fuel, and the industrialization rate is lower.
Disclosure of Invention
The invention of the utility model aims to: the preparation system of the liquefied biological natural gas has the advantages that the preparation process can be adjusted according to actual requirements, and the preparation cost is saved.
The utility model adopts the technical scheme as follows:
a system for producing liquefied bio-natural gas, the system comprising: a raw material inlet pipe; the raw material air inlet pipe is provided with a first flow valve, a second flow valve and a third flow valve; the raw material air inlet pipe is a bifurcated three-head pipe and comprises a main pipe and two auxiliary pipes; the first flow valve is arranged on the main pipe; the second flow valve and the third flow valve are respectively arranged on the two secondary pipes; the auxiliary pipe where the second flow valve is located is connected to the first purification device; the auxiliary pipe where the second flow valve is located is connected to the first dehydration unit; the first dehydration unit is respectively connected with the second purification device, the second dehydration unit, the liquefaction device and the exhaust pipe through different gas transmission pipes; the first purifying device is connected with the first dehydration unit; the second purifying device is connected with the second dehydration unit; the second dehydration unit is respectively connected with the liquefaction device and the exhaust pipe through different gas transmission pipes; the liquefaction device is also connected with a pressure regulating pipeline.
Further, a fourth flow valve is arranged on the exhaust pipe.
Furthermore, a fifth flow valve is arranged on the pressure regulating pipe.
Further, the first dewatering unit and the second dewatering unit each comprise a sealed housing; and the sealed shell is provided with a through hole for connecting the first purification device, the second purification device, the first dehydration unit and the second dehydration unit.
Furthermore, a sixth flow valve and a seventh flow valve are arranged on a gas transmission pipe connected with the second dehydration unit and the liquefaction device.
Further, the liquefaction apparatus comprises: the gas entering the liquefying device firstly enters the upper ends of the condensing pipelines, the liquefied gas is discharged through the lower ends of the condensing pipes, and two obliquely-installed liquid collecting screens are arranged in one condensing pipeline; the liquid collecting screen comprises a middle section collecting screen and a tail end collecting screen, the middle section collecting screen is installed in the middle of the condensing pipeline, the tail end collecting screen is installed on the condensing pipeline on the side of the gas outlet, a liquid collecting tank is arranged below the liquid collecting screen, and the liquid collecting tank below the middle section collecting screen is communicated with the collecting pipeline through a single vertical installation.
Furthermore, an eighth flow valve is arranged on a gas conveying pipe connected with the first dehydration unit and the second purification device.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: in the process of preparing the natural gas, various preparation modes can be used for preparation, different modes are selected for treating the source gas according to the requirement of preparing the gas, the treatment of various treatment modes in the same system is realized, and the cost is saved.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic system diagram of a liquefied natural gas production system according to the present invention.
The device comprises a first flow valve, a second flow valve, a third flow valve, a 4-sealed shell, a 5-first purification device, a 6-first dehydration unit, a 7-eighth flow valve, a 8-second purification device, a 9-second dehydration unit, a 10-liquefaction device, a 11-sixth flow valve, a 12-seventh flow valve, a 13-fourth flow valve and a 14-fifth flow valve.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
As shown in fig. 1, a system for preparing liquefied bio-natural gas, the system comprising: a raw material inlet pipe; the raw material air inlet pipe is provided with a first flow valve 1, a second flow valve 2 and a third flow valve 3; the raw material air inlet pipe is a bifurcated three-head pipe and comprises a main pipe and two auxiliary pipes; the first flow valve 1 is arranged on the main pipe; the second flow valve 2 and the third flow valve 3 are respectively arranged on the two secondary pipes; the secondary pipe where the second flow valve 3 is located is connected to a first purification device 5; the auxiliary pipe where the second flow valve 2 is located is connected to the first dehydration unit 6; the first dehydration unit 6 is respectively connected with the second purification device 8, the second dehydration unit 9, the liquefaction device 10 and the exhaust pipe through different gas transmission pipes; the first purification device 5 is connected with the first dehydration unit 6; the second purification device 8 is connected with the second dehydration unit 9; the second dehydration unit 9 is respectively connected with the liquefaction device and the exhaust pipe through different gas transmission pipes; the liquefaction device is also connected with a pressure regulating pipeline.
Specifically, according to different characteristics of raw materials, opening and closing of different flow valves can be controlled, so that the raw materials with high purity can be prepared by simple treatment. Thereby simplifying the process of preparing the natural gas.
Further, a fourth flow valve 13 is arranged on the exhaust pipe.
Further, a fifth flow valve 14 is arranged on the pressure regulating pipe.
Specifically, if the purity of the raw material gas is high, the second flow valve can be directly closed, then the eighth flow valve is closed, and the raw material gas only needs to be dehydrated for the first time and the second time, and then the hydraulic pressure can be performed to complete the preparation of the natural gas.
If the purity of the raw material gas is very low, all flow valves can be opened, and the whole natural gas preparation step can be guaranteed to be completed.
Further, the first dewatering unit 6 and the second dewatering unit 9 each comprise a sealed housing; the sealed shell is provided with a through hole for connecting the first purification device 5, the second purification device 8 and the first dehydration unit 6 and the second dehydration unit 9.
Further, a sixth flow valve 11 and a seventh flow valve 12 are respectively arranged on the gas transmission pipe connected with the second dehydration unit and the liquefaction device.
Specifically, when a certain specific step is required, a formulated flow valve can be opened according to the requirement, the preparation of the natural gas in the step is finished by personal assurance, and then the preparation of the natural gas is ensured to meet the self requirement, and the preparation requirement is also met.
Further, the liquefaction apparatus 10 includes: the gas entering the liquefying device firstly enters the upper ends of the condensing pipelines, the liquefied gas is discharged through the lower ends of the condensing pipes, and two obliquely-installed liquid collecting screens are arranged in one condensing pipeline; the liquid collecting screen comprises a middle section collecting screen and a tail end collecting screen, the middle section collecting screen is installed in the middle of the condensing pipeline, the tail end collecting screen is installed on the condensing pipeline on the side of the gas outlet, a liquid collecting tank is arranged below the liquid collecting screen, and the liquid collecting tank below the middle section collecting screen is communicated with the collecting pipeline through a single vertical installation.
Furthermore, an eighth flow valve is arranged on a gas conveying pipe connected with the first dehydration unit and the second purification device.
Specifically, when only the first flow valve and the second flow valve are opened, the source gas directly enters the first purification device; on the basis, if the third flow valve is opened, part of the gas directly enters the first purification device, and part of the gas directly enters the first dehydration unit through the third flow valve; but all the gas will be treated by the first purification means and the first dewatering unit due to the communication effect of the spaces.
And then, if the eighth flow valve is closed, the sixth flow valve, the seventh flow valve and the fourth flow valve are closed, the source gas is treated by the first dehydration unit and the first purification device in a unified way, and then flows out through the fifth flow valve.
If the eighth flow valve is closed, the sixth flow valve and the seventh flow valve are closed, the liquefying device is closed, and the fourth flow valve is opened, the gas directly flows out through the fourth flow valve after passing through the first purifying device and the first dehydrating unit.
If the eighth flow valve is opened, the sixth flow valve and the seventh flow valve are closed, the liquefying device is closed, and the fourth flow valve is opened, after the gas is treated by the first purifying device and the first dehydrating unit, part of the source gas directly flows out through the fourth flow valve, and part of the source gas flows out through the fourth flow valve after being treated by the second purifying device and the second dehydrating unit.
And if the eighth flow valve is opened, the sixth flow valve and the seventh flow valve are opened, and the fourth flow valve is closed, the gas is treated by the first purification device and the first dehydration unit, then treated by the second purification device and the second dehydration unit, then treated by the liquefaction device, and flows out through the fifth flow valve.
In conclusion, the system can be used for preparing natural gas in various preparation modes, and different modes are selected for treating the source gas according to the requirement of preparing the gas, so that the treatment of various treatment modes in the same system is realized, and the cost is saved.
The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (7)
1. A system for producing liquefied biogas, the system comprising: a raw material inlet pipe; the raw material air inlet pipe is provided with a first flow valve, a second flow valve and a third flow valve; the raw material air inlet pipe is a bifurcated three-head pipe and comprises a main pipe and two auxiliary pipes; the first flow valve is arranged on the main pipe; the second flow valve and the third flow valve are respectively arranged on the two secondary pipes; the auxiliary pipe where the second flow valve is located is connected to the first purification device; the auxiliary pipe where the second flow valve is located is connected to the first dehydration unit; the first dehydration unit is respectively connected with the second purification device, the second dehydration unit, the liquefaction device and the exhaust pipe through different gas transmission pipes; the first purifying device is connected with the first dehydration unit; the second purifying device is connected with the second dehydration unit; the second dehydration unit is respectively connected with the liquefaction device and the exhaust pipe through different gas transmission pipes; the liquefaction device is also connected with a pressure regulating pipeline.
2. The liquefied bio natural gas production system according to claim 1, wherein a fourth flow valve is provided on the exhaust pipe.
3. The liquefied bio natural gas production system according to claim 2, wherein a fifth flow valve is provided on the pressure regulating pipe.
4. The liquefied bio natural gas production system according to claim 3, wherein each of the first dehydration unit and the second dehydration unit comprises a sealed enclosure; and the sealed shell is provided with a through hole for connecting the first purification device, the second purification device, the first dehydration unit and the second dehydration unit.
5. The liquefied biogas preparation system according to claim 4, wherein a sixth flow valve and a seventh flow valve are provided on the gas pipe connecting the second dehydration unit and the liquefaction apparatus.
6. The liquefied bio natural gas production system according to claim 5, wherein the liquefaction apparatus comprises: the gas entering the liquefying device firstly enters the upper ends of the condensing pipelines, the liquefied gas is discharged through the lower ends of the condensing pipes, and two obliquely-installed liquid collecting screens are arranged in one condensing pipeline; the liquid collecting screen comprises a middle section collecting screen and a tail end collecting screen, the middle section collecting screen is installed in the middle of the condensing pipeline, the tail end collecting screen is installed on the condensing pipeline on the side of the gas outlet, a liquid collecting tank is arranged below the liquid collecting screen, and the liquid collecting tank below the middle section collecting screen is communicated with the collecting pipeline through a single vertical installation.
7. The liquefied biogas as claimed in claim 6, wherein an eighth flow valve is disposed on the gas pipe connecting the first dehydration unit and the second purification device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921136011.7U CN210419874U (en) | 2019-07-19 | 2019-07-19 | Preparation system of liquefied biological natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921136011.7U CN210419874U (en) | 2019-07-19 | 2019-07-19 | Preparation system of liquefied biological natural gas |
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| Publication Number | Publication Date |
|---|---|
| CN210419874U true CN210419874U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921136011.7U Active CN210419874U (en) | 2019-07-19 | 2019-07-19 | Preparation system of liquefied biological natural gas |
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| CN (1) | CN210419874U (en) |
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2019
- 2019-07-19 CN CN201921136011.7U patent/CN210419874U/en active Active
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