CN204676045U - A kind of Sweet natural gas preparation system and refining plant - Google Patents
A kind of Sweet natural gas preparation system and refining plant Download PDFInfo
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- CN204676045U CN204676045U CN201520287993.5U CN201520287993U CN204676045U CN 204676045 U CN204676045 U CN 204676045U CN 201520287993 U CN201520287993 U CN 201520287993U CN 204676045 U CN204676045 U CN 204676045U
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- natural gas
- sweet natural
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- vertical standpipe
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Abstract
The utility model relates to derived energy chemical technical field, particularly relates to a kind of Sweet natural gas preparation system and refining plant.Refining plant comprises for the absorption tower of splendid attire amine liquid with for entering pipe to the Sweet natural gas of described absorption tower press-in Sweet natural gas, described Sweet natural gas enters pipe and is communicated with described absorption tower, described Sweet natural gas enters pipe and comprises vertical standpipe section, described vertical standpipe section be positioned at described Sweet natural gas enter pipe with described absorption tower be communicated with interface avris, the apical position of described vertical standpipe section presets liquid level higher than the amine liquid of inside, described absorption tower.By above vibrational power flow, when total system is out of service, the amine liquid caused because of imbalance of pressure blows back into Sweet natural gas and enters pipe, and flow into the top of amine liquid vertical standpipe section because gravity factor cannot rise to of vertical standpipe section by being communicated with interface, and then avoid amine liquid to flow to other position and miscellaneous equipment that Sweet natural gas enters pipe.Application of the present utility model significantly improves security, system run all right and working efficiency.
Description
Technical field
The utility model relates to derived energy chemical technical field, particularly relates to a kind of Sweet natural gas preparation system and refining plant.
Background technology
Along with the development of China's derived energy chemical industry, for the digging of the various mineral products energy and Application and preparation to various system device.Wherein, in the preparation process of Sweet natural gas, need to use Sweet natural gas preparation system and refining plant.
In recent years, the requirement for the security of the refining plant applied in Sweet natural gas preparation process, the aspect such as operation stability and working efficiency is more and more higher.Therefore, improve the security of refining plant, operation stability and working efficiency and become design objective.
In prior art, in Sweet natural gas preparation system, natural gas via overdraft, purification, drying, deep cooling, the operation of device such as store and fill, final production goes out free of contamination natural gas liquids (LNG).For the purification system of purified natural gas, as shown in Figure 1, amine liquid 2 is equipped with in the inside, absorption tower 1 of purification system, and amine liquid 2, for purifying the Sweet natural gas entering absorption tower 1 from pipeline 3, mainly absorbs the carbonic acid gas in Sweet natural gas.And when overall Sweet natural gas preparation system shuts down, because of the reason of the aspects such as pressure, the amine liquid 2 meeting feed line 3 li in absorption tower 1, thus cause the disappearance of amine liquid 2 in absorption tower 1, when this makes again start up system carry out work, cannot normally run because the amine liquid 2 in absorption tower 1 is not enough; Meanwhile, the potential safety hazard of total system can be caused in amine liquid 2 feed line 3.This all needs before reworking, to carry out the collection of amine liquid 2 to absorption tower 1 and can open work after supplementing.Thus, the security of refining plant, operation stability and working efficiency are all affected significantly.
In above-mentioned prior art, security, the defect such as operation stability and inefficiency of refining plant are the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of Sweet natural gas preparation system and refining plant, by application of the present utility model by significantly improve in Sweet natural gas preparation process security, operation stability and working efficiency.
For solving the problems of the technologies described above, the utility model provides a kind of refining plant for purified natural gas, comprise for the absorption tower of splendid attire amine liquid with for entering pipe to the Sweet natural gas of described absorption tower press-in Sweet natural gas, described Sweet natural gas enters pipe and is communicated with described absorption tower, described Sweet natural gas enters pipe and comprises vertical standpipe section, described vertical standpipe section be positioned at described Sweet natural gas enter pipe with described absorption tower be communicated with interface avris, the apical position of described vertical standpipe section presets liquid level higher than the amine liquid of inside, described absorption tower.
Preferably, the value that the apical position of described vertical standpipe section presets liquid level higher than the amine liquid of inside, described absorption tower is 1.45 meters to 2 meters.
Preferably, the value that the apical position of described vertical standpipe section presets liquid level higher than the amine liquid of inside, described absorption tower is specially 1.5 meters.
Preferably, described vertical standpipe section is the vertical standpipe section arranged perpendicular to ground.
Preferably, described Sweet natural gas enters pipe and also comprises the second vertical standpipe section and transition section, and the described second vertical standpipe section and described transition section are communicated in the top of described vertical standpipe section to form U-shaped pipe segment structure.
The utility model also provides a kind of Sweet natural gas preparation system, comprises the refining plant described in above-mentioned any one.
At one about in the preferred implementation of refining plant, refining plant comprises and enters pipe for the absorption tower of splendid attire amine liquid and Sweet natural gas, Sweet natural gas enters pipe and comprises vertical standpipe section, what this vertical standpipe section was positioned at that Sweet natural gas enters pipe and absorption tower is communicated with interface avris, and vertically the apical position of standpipe section presets liquid level higher than the amine liquid of inside, absorption tower.In above structure, owing to being loaded with amine liquid in absorption tower, when total system normally runs, Sweet natural gas enters pipe by Sweet natural gas and enters bottom absorption tower, enter the amine liquid-phase mixing of the inner splendid attire of Sweet natural gas and absorption tower of inside, absorption tower, thus the carbonic acid gas in Sweet natural gas absorbs by amine liquid, and when total system is out of service, Sweet natural gas enters the instantaneous reduction of gas pressure of pipe inside, thus broken enter absorption tower Sweet natural gas and absorption tower in the pressure equilibrium of amine liquid, thus amine liquid from Sweet natural gas enter pipe pour into absorbing natural gas pipe with the interface position that is communicated with on absorption tower, and enter the amine liquid that Sweet natural gas enters pipe and flow to by being communicated with interface the vertical standpipe section being communicated with interface avris, because system cloud gray model stops the gas pressure causing to reduce, thus flow into amine liquid that Sweet natural gas enters pipe in vertical standpipe section in " backflow " process, because the apical position of vertical standpipe section presets liquid level higher than the amine liquid of inside, absorption tower, therefore, amine liquid is in the top flow process to vertical standpipe section, along with the gravity of amine liquid self, make amine liquid finally cannot flow to the top of vertical standpipe section, just the balance of amine liquid in inside, absorption tower with vertical standpipe intersegmental part is reached, namely avoid amine liquid and finally flow to other conduit positions beyond vertical standpipe section and other equipment configuration.
In prior art, the Sweet natural gas set according to actual production demand enters pipe and is communicated with absorption tower, and enter the amine liquid that Sweet natural gas enters pipe can not get controlling because gas pressure reduces the amine liquid " backflow " caused, this makes the amine liquid in absorption tower reduce, due to the loss of amine liquid after reproducing, and need from new inject amine liquid with reach amine liquid measure needed for production can produce.And flow into the amine liquid that Sweet natural gas enters pipe and will cause the potential safety hazards such as corrosion to pipe fitting and other equipment.
Compared to prior art, the utility model is by being communicated with the setting of the vertical standpipe section of interface avris, the gravity that make use of amine liquid cannot flow to control amine liquid other pipeline section position that Sweet natural gas enters pipe, simultaneously, in system from after newly starting working, the Sweet natural gas that pressure increases just by the amine liquid that is detained in vertical standpipe section from newly pushing back absorption tower, can reach pressure balance during task, resuming production fast.Therefore, application of the present utility model will significantly improve security, operation stability and working efficiency.
In a kind of preferred implementation about Sweet natural gas preparation system, in Sweet natural gas preparation system, be provided with the refining plant proposed in above-mentioned preferred implementation, the application of this Sweet natural gas preparation system will significantly improve the security of purified natural gas, system run all right and working efficiency.Concrete discussion refers to foregoing, repeats no more herein.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is prior art structural representation;
Fig. 2 is the utility model first structural representation;
Fig. 3 is the utility model second structural representation;
Wherein, in Fig. 1: absorption tower-1, amine liquid-2, pipeline-3;
In Fig. 2 and Fig. 3: absorption tower-1, amine liquid-2, Sweet natural gas enter pipe-3, vertical standpipe section-31, transition section-32, the second vertical standpipe section-33.
Embodiment
Core of the present utility model is to provide a kind of Sweet natural gas preparation system and refining plant, by application of the present utility model by significantly improve in Sweet natural gas preparation process security, operation stability and working efficiency.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the utility model first structural representation, and Fig. 3 is the utility model second structural representation.
According to Fig. 2, refining plant for purified natural gas comprises and enters pipe 3 for the absorption tower 1 of splendid attire amine liquid 2 and the Sweet natural gas for being pressed into Sweet natural gas to absorption tower 1, Sweet natural gas enters pipe 3 and is communicated with absorption tower 1, Sweet natural gas enters pipe 3 and comprises vertical standpipe section 31, what vertical standpipe section 31 was positioned at that Sweet natural gas enters pipe 3 and absorption tower 1 is communicated with interface avris, and the apical position of vertical standpipe section 31 presets liquid level higher than the amine liquid 2 of inside, absorption tower 1.After total system is out of service for some reason, the pressure reduction that pipe 3 flows into the Sweet natural gas on absorption tower 1 is entered by Sweet natural gas, because of the pressure of Sweet natural gas between original Sweet natural gas and amine liquid 2, the equilibrium state that the factors such as the gravity of amine liquid 2 maintain is destroyed, thus amine liquid 2 enters pipe 3 by being communicated with interface inflow Sweet natural gas, and then flow into the vertical standpipe section 31 being communicated with interface avris, because the apical position of vertical standpipe section 31 presets liquid level higher than the amine liquid 2 of inside, absorption tower 1, therefore the amine liquid 2 in vertical standpipe section 31 flows upward, because of gravity factor, just the amine liquid 2 of inside, absorption tower 1 and the overall stress balance of the amine liquid 2 in vertical standpipe section 31 is reached when amine liquid 2 does not flow to the apical position of vertical standpipe section 31, thus amine liquid 2 is stable in vertical standpipe section 31 to avoid and flow to Sweet natural gas and enter other position of pipe 3 and enter pipe 3 by Sweet natural gas and flow to miscellaneous equipment.And then, when system recovery is produced, the pressure of Sweet natural gas increases, Sweet natural gas enters pipe 3 by Sweet natural gas and pours in the process on absorption tower 1, the amine liquid 2 be detained in vertical standpipe section 31 is pressed into absorption tower 1 from new, from newly making the amine liquid 2 in absorption tower 1 reach work aequum, reach job requirement rapidly.
Therefore, application of the present utility model will significantly improve security, operation stability and working efficiency.
On the basis of above-mentioned specific embodiment, it is high 1.45 meters to 2 meters that the apical position arranging vertical standpipe section 31 further presets liquid level than the amine liquid 2 of inside, absorption tower 1.The degree of depth due to the amine liquid 2 in absorption tower 1 arranges general at about 0.3 meter, and therefore arrange the difference of altitude of 1.45 meters to 2 meters, the amine liquid 2 that can ensure to flow into vertical standpipe section 31 more definitely finally cannot flow to the apical position of vertical standpipe section 31.And most preferred rational height difference is 1.5 meters.More than arrange and further increase security.
On the basis of each specific embodiment above-mentioned, please refer to Fig. 3, arranging vertical standpipe section 31 is the vertical standpipe section 31 arranged perpendicular to ground.The gravity that the refining plant provided due to the utility model make use of amine liquid 2 is as prevent amine liquid 2 from flowing to theoretical basis that Sweet natural gas enters other position of pipe 3, therefore, vertical standpipe section 31 is set to perpendicular to the ground, this the most directly makes amine liquid 2 gravitate entering vertical standpipe section 31, and avoid the flowing of amine liquid 2 in vertical standpipe section 31 and there is horizontal shift, and then avoid the possibility that the amine liquid 2 caused because of inertial flow crosses the top of vertical standpipe section 31, which further improves safety and stability.
Further, Sweet natural gas enters pipe 3 and also comprises the top that the second vertical standpipe section 33 and the vertical standpipe section 33 of transition section 32, second and transition section 32 are communicated in vertical standpipe section 31.In this specific embodiment, the pipeline of similar " U " shape that the second vertical standpipe section 33, transition section 32 and vertical standpipe section 31 form, under the state that other pipeline section that this section " U " shape pipeline makes Sweet natural gas enter pipe 3 still keeps original pattern position, just can realize the functional structure preventing amine liquid 2 from flowing into.Therefore, which further improves overall stability.
In a specific embodiment about Sweet natural gas preparation system, in Sweet natural gas preparation system, be provided with the refining plant proposed in each specific embodiment above-mentioned, the application of this Sweet natural gas preparation system will significantly improve the security of purified natural gas, system run all right and working efficiency.Concrete discussion refers to each specific embodiment above-mentioned, repeats no more.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. the refining plant for purified natural gas, comprise for the absorption tower (1) of splendid attire amine liquid (2) with for entering pipe (3) to the Sweet natural gas of described absorption tower (1) press-in Sweet natural gas, described Sweet natural gas enters pipe (3) and is communicated with described absorption tower (1), it is characterized in that, described Sweet natural gas enters pipe (3) and comprises vertical standpipe section (31), what described vertical standpipe section (31) was positioned at that described Sweet natural gas enters pipe (3) and described absorption tower (1) is communicated with interface avris, the apical position of described vertical standpipe section (31) presets liquid level higher than the amine liquid (2) that described absorption tower (1) is inner.
2. refining plant as claimed in claim 1, is characterized in that, the value that the apical position of described vertical standpipe section (31) presets liquid level higher than the amine liquid (2) that described absorption tower (1) is inner is 1.45 meters to 2 meters.
3. refining plant as claimed in claim 2, is characterized in that, the value that the apical position of described vertical standpipe section (31) presets liquid level higher than the amine liquid (2) that described absorption tower (1) is inner is specially 1.5 meters.
4. the refining plant as described in any one of claims 1 to 3, is characterized in that, described vertical standpipe section (31) is the vertical standpipe section (31) arranged perpendicular to ground.
5. refining plant as claimed in claim 4, it is characterized in that, described Sweet natural gas enters pipe (3) and also comprises the second vertical standpipe section (33) and transition section (32), and the described second vertical standpipe section (33) and described transition section (32) are communicated in the top of described vertical standpipe section (31) to form U-shaped pipe segment structure.
6. a Sweet natural gas preparation system, is characterized in that, comprises the refining plant as described in any one of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520287993.5U CN204676045U (en) | 2015-05-06 | 2015-05-06 | A kind of Sweet natural gas preparation system and refining plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520287993.5U CN204676045U (en) | 2015-05-06 | 2015-05-06 | A kind of Sweet natural gas preparation system and refining plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204676045U true CN204676045U (en) | 2015-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520287993.5U Active CN204676045U (en) | 2015-05-06 | 2015-05-06 | A kind of Sweet natural gas preparation system and refining plant |
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| Country | Link |
|---|---|
| CN (1) | CN204676045U (en) |
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2015
- 2015-05-06 CN CN201520287993.5U patent/CN204676045U/en active Active
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