CN217857890U - Sour gas replacement device - Google Patents
Sour gas replacement device Download PDFInfo
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- CN217857890U CN217857890U CN202221042409.6U CN202221042409U CN217857890U CN 217857890 U CN217857890 U CN 217857890U CN 202221042409 U CN202221042409 U CN 202221042409U CN 217857890 U CN217857890 U CN 217857890U
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Abstract
The utility model provides an acid gas replacement device, which comprises a sludge tank, an alkaline liquid tank and a pump; the sludge tank is provided with a return pipe and an overflow port, the overflow port is communicated with the alkaline liquid tank, and the alkaline liquid tank is communicated with the inlet of the pump through a pipeline. Compared with the prior art, this application carries the pipeline of treating the replacement through the alkali lye of pump in with the lye case, in the container, wash away the pipeline, solid particle in the container, impurity and the liquid that contains hydrogen sulfide gas carry out neutralization reaction, later the backward flow gets into the sludge box and makes impurity subside, alkali lye after subsiding overflows to the lye case from the overflow mouth, realize constantly circulating, close the pump after the PH value of the liquid that flows out until detecting in the return line is qualified, thereby reach and get rid of the container, the inside mud that adheres to of pipeline and the purpose of remaining hydrogen sulfide.
Description
Technical Field
The utility model relates to a contain sulphur natural gas development equipment technical field, especially relate to an acid gas replacement device.
Background
With the development of marine phase gas fields, the number of sour gas wells is increasing. Hydrogen sulfide is an inorganic compound with the molecular formula H 2 S, the molecular weight is 34.076, the oil is a flammable acidic gas under the standard condition, and is colorless, smelly egg smell is generated at low concentration, sulfur smell is generated at very low concentration, and the oil is extremely toxic. The aqueous solution is hydrogen sulfuric acid, which is less acidic than carbonic acid, but more strongly boric acid. Can be dissolved in water and is easy to beSoluble in alcohols, petroleum solvents and crude oils.
When a gas well is produced, sulfur-containing natural gas can carry a part of condensate water, fracturing sand, drilling debris and impurities generated by corrosion into a desulfurization system and pipelines. When impurities pass through the wellhead device and the purification process, part of the impurities are deposited at the bottoms of the pipelines and the containers. When equipment is maintained, safety measures such as installing a blind plate, installing an energy isolation lock and the like are carried out on the sulfur-containing equipment and the pipelines according to relevant requirements, and nitrogen replacement is carried out on containers and the pipelines to ensure that harmful gases such as hydrogen sulfide and the like do not exist in the containers and the pipelines.
At present, after nitrogen gas replacement and purging are used, gas in a container and a pipeline is detected, and because hydrogen sulfide has the characteristic of being soluble in water, part of hydrogen sulfide can be dissolved in water, hydrogen sulfide can overflow after disturbance and remain in the container and the pipeline, certain safety risk exists during operation, and no acid gas replacement device in the container and the pipeline eliminates hydrogen sulfide in effusion in the container and the pipeline at present.
SUMMERY OF THE UTILITY MODEL
To the not enough among the above-mentioned prior art, the utility model aims at providing a sour gas replacement device, it can be used to eliminate the hydrogen sulfide in the hydrops in container and the pipeline.
The principle of the device is as follows:
the method utilizes the characteristic that strong alkaline aqueous solution reacts with hydrogen sulfide to generate salt and water, and uses the strong alkaline aqueous solution to circularly wash the inside of the container and the pipeline, thereby achieving the purpose of removing sludge and residual hydrogen sulfide attached to the inside of the container and the pipeline.
Sodium hydroxide, commonly known as NaOH, caustic soda, is a strong caustic alkali with strong corrosivity, generally in the form of flakes or particles, and is readily soluble in water (which releases heat when dissolved in water) and forms an alkaline solution. The pure product is colorless and transparent crystals. Neutralizing with acid to generate salt and water.
Small amount of sodium hydroxide: naOH + H 2 S＝＝NaHS+H 2 O
Excess of sodium hydroxide: 2NaOH solution H 2 S＝＝Na 2 S+2H 2 O
The utility model provides an acid gas replacement device, which comprises a sludge tank, an alkaline liquid tank and a pump; the sludge tank is provided with a return pipe and an overflow port, the overflow port is communicated with the alkaline liquid tank, and the alkaline liquid tank is communicated with the inlet of the pump through a pipeline.
Conveying the alkali liquor in the alkali liquor tank to a pipeline and a container to be replaced by a pump; the container and the pipeline are filled with alkali liquor, the pipeline and the liquid containing solid particles, impurities and hydrogen sulfide gas in the container are washed, the sulfur-containing liquid is fully mixed with the alkali liquor to form a neutralized liquid, and the generated Na2S, water, the entrained solid particles and impurities flow back to the sludge tank from the return pipe; in the sludge case, solid particle and impurity subside at sludge bottom of the case portion, and the alkali lye after subsiding overflows to the alkali lye case from the overflow mouth, realizes constantly circulating, closes the pump after detecting the pH value of the liquid that flows out in the return line is qualified to eliminate the hydrogen sulfide in the hydrops in container and the pipeline.
Whether the hydrogen sulfide in the container and the pipeline is completely eliminated can be determined by detecting the PH value of the liquid in the container and the pipeline. Because the liquid in the container and the pipeline enters the sludge tank through the return pipe in the circulation process, the PH value of the liquid in the container and the pipeline can be indirectly determined by detecting the PH value of the liquid in the return pipe. The pH value can be detected by a pH test paper or a pH automatic detector.
Preferably, the automatic PH detector is further included and is used for detecting the PH value of the liquid in the backflow pipe.
Preferably, the automatic PH detector is in communication connection with the control module, and the control module is configured to control the operation of the pump according to a received detection signal of the automatic PH detector.
Preferably, the pump is a direct current pump, the acid gas replacement device further comprises a storage battery, and the direct current pump is electrically connected with the storage battery.
Preferably, the sludge tank is fixedly mounted on the side wall of the alkaline liquid tank.
Preferably, the sludge tank and the lye tank are connected into a whole through a shared side wall, and the overflow port is a through hole arranged on the side wall.
Preferably, the storage battery and the direct current pump are arranged outside the lye tank, and the sludge tank is fixedly arranged on the outer side wall of the lye tank and positioned above the storage battery and the direct current pump.
Compared with the prior art, use the utility model discloses an acid gas replacement device can circulate and wash container, pipeline inside, reaches the purpose of getting rid of container, pipeline inside attached sludge and remaining hydrogen sulfide. The PH automatic detector and the control module are arranged, so that the PH value of liquid in the backflow pipe can be detected, and the operation of the pump can be automatically controlled. The acid gas replacement device is convenient to carry and more suitable for field action by adopting the direct current pump and the storage battery. Through making the sludge case with an alkali lye case sharing lateral wall, both connect as an organic wholely through this lateral wall, can effectively alleviate the volume and the weight of device, portable simultaneously.
The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.
Drawings
The invention will be described in greater detail hereinafter on the basis of a non-limiting example only and with reference to the accompanying drawings. Wherein:
fig. 1 is a schematic structural diagram of an acid gas replacement device according to an embodiment of the present invention.
Description of reference numerals:
1. a sludge tank; 2. an alkaline liquid tank; 3. a return pipe; 4. an overflow port; 5. a PH automatic detector; 6. a direct current pump; 7. a battery; 8. an inlet conduit for the pump; 9. an outlet conduit of the pump.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, it will be right below that the technical solution of the present invention performs clear and complete description, based on the specific embodiments of the present invention, all other embodiments obtained by those skilled in the art on the premise that creative labor is not made belong to the scope of the present invention.
The use of the word "comprising" or "comprises" and the like in this disclosure means that the elements listed before the word encompass the elements listed after the word and do not exclude the possibility that other elements may also be encompassed. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in figure 1, the acid gas replacement device mainly comprises a sludge tank 1, an alkali liquor tank 2 and a pump which are communicated in sequence.
A return pipe 3 and an overflow port 4 are arranged on the sludge tank 1, the sludge tank 1 is communicated with a space (such as a pipeline, a container and the like) to be replaced through the return pipe 3, and the sludge tank 1 is communicated with an alkaline liquid tank 2 through the overflow port 4. The sludge box 1 is used for storing the alkali liquor which flows back from the space to be replaced, the flowing-back alkali liquor contains solid particles and other impurities which are washed down from the space to be replaced, the particles and other impurities are deposited in the sludge box 1 in a large density, and the deposited alkali liquor enters the alkali liquor box 2 through the overflow port 4. The lye tank 2 is used for storing lye for replacement and washing, and the amount and concentration of the needed lye can be properly configured according to the size of the replacement space. The pump is used for carrying the alkali lye in the lye tank 2 to treating the replacement space, and the entry of pump passes through pipeline intercommunication lye tank 2, and the export of pump then waits to replace the space through the pipeline intercommunication. The pump preferably adopts an acid and alkali resistant pump body.
The alkali liquor in the alkali liquor box 2 is sucked into the pump inlet, and enters the pipeline and the container to be replaced under the pressurization of the pump; filling the container and pipeline with alkali solution, flushing the pipeline and liquid containing solid particles, impurities and hydrogen sulfide gas in the container, mixing the sulfur-containing liquid with alkali solution to form neutralizing liquid, and generating Na 2 S, water, entrained solid particles and other impurities flow back into the sludge tank 1 from the return pipe 3; in sludge box 1, solid particles and impurity subside in sludge box 1 bottom, and the alkali lye after subsiding overflows to alkali lye case 2 from overflow mouth 4, realizes constantly circulating, closes the pump after detecting that the PH value of liquid is qualified in the back flow pipe 3. In order to ensure the replacement effect, when the pH value concentration of the alkali liquor in the alkali liquor tank 2 is reduced below a certain preset value, the alkali liquor in the alkali liquor tank 2 should be replaced in time.
The PH value of liquid can adopt PH automated inspection appearance 5 to carry out automated inspection in the back flow 3, and preferably, PH automated inspection appearance 5 is installed in the back flow 3 and is close to the one end of sludge tank 1 and makes PH automated inspection appearance 5's sense terminal stretch into back flow 3 way. Further preferably, a control module (not shown in the figure) is additionally arranged, the control module is in communication connection with the PH automatic detector 5 and the pump respectively in a wired connection or wireless connection manner, a detection signal of the PH automatic detector 5 is transmitted to the control module, and the control module controls the operation of the pump according to the received detection signal of the PH automatic detector 5. The PH value of lye in the lye tank 2 can use the PH test paper to carry out manual detection, also can cross another PH automatic detector and carry out automatic check.
In order to make the acid gas replacement device convenient for field operation, one or more of the following schemes can be adopted and combined, and the acid gas replacement device is convenient to carry, such as:
(1) The pump preferably adopts an acid and alkali resistant direct current pump 6, and is provided with a storage battery 7, and the storage battery 7 and the direct current pump 6 form electric connection through a conducting wire and the like so as to supply power to the direct current pump 6;
(2) Fixedly mounting a sludge box 1 on the side wall of the alkaline liquid box 2, and connecting the sludge box and the alkaline liquid box into a whole so as to be convenient to carry;
(3) The sludge tank 1 and the alkaline liquid tank 2 are designed to share a side wall, and are connected into a whole through the side wall, so that the volume and the weight of the device can be effectively reduced, and the whole device is compact in structure and convenient to carry. More preferably, design sludge box 1 and lye tank 2 for the rectangle box, and sludge box 1's volume is less than lye tank 2's volume, and sludge box 1 is unsettled to be fixed on the upper portion in lye tank 2 outside, battery 7 with straight-flow pump 6 installs in sludge box 1's below, so, makes sludge box 1 below space obtain make full use of, can make acid gas replacement device's structure compacter, portable.
When the acid gas replacement device is used for eliminating hydrogen sulfide in accumulated liquid in a container and a pipeline, the method comprises the following steps:
1. emptying and decompressing the container and the pipeline to be maintained;
2. the outlet pipe 9 of the pump and the return pipe 3 are connected to the container, pipe to be replaced, respectively;
3. adding a proper amount of alkali liquor into the alkali liquor tank 2;
4. starting a pump, sucking alkali liquor from an alkali liquor tank 2 by the pump, enabling the alkali liquor to enter a container and a pipeline through an outlet pipeline 9 of the pump, enabling the alkali liquor to carry impurities, settled sulfur-containing water and the like in the container to enter a sludge tank 1 for settlement separation after the container is filled with the alkali liquor, and enabling the separated alkali liquor to overflow into the alkali liquor tank 2 for recycling;
5. and when the pH value of the liquid in the return pipe 3 detected by the automatic pH detector is stabilized to be more than 8, the pump is closed, and the circulation is stopped.
When the PH value of the alkali liquor in the alkali liquor box 2 is reduced to below 8, the alkali liquor in the alkali liquor box 2 is replaced in time to ensure the replacement effect.
Finally, it should be noted that: the above embodiments and examples are only used to illustrate the technical solution of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments and examples, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments or examples may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments or examples of the present invention.
Claims (7)
1. An acid gas replacement device is characterized by comprising a sludge tank, an alkaline liquid tank and a pump; the sludge tank is provided with a return pipe and an overflow port, the overflow port is communicated with the alkaline liquid tank, and the alkaline liquid tank is communicated with the inlet of the pump through a pipeline.
2. The acid gas replacement device of claim 1, further comprising an automatic pH detector for detecting the pH of the liquid in the return line.
3. The acid gas displacement apparatus of claim 2, further comprising a control module, wherein the pH robot is communicatively coupled to the control module, and wherein the control module is configured to control operation of the pump based on a detection signal received from the pH robot.
4. The acid gas displacement apparatus of claim 1, wherein the pump is a dc pump, the apparatus further comprising a battery, the dc pump being electrically connected to the battery.
5. The acid gas replacement device according to claim 1, wherein the sludge tank is fixedly mounted on a side wall of the alkaline liquid tank.
6. The acid gas replacement device of claim 1, wherein the sludge tank and the alkaline liquid tank are connected into a whole through a common side wall, and the overflow port is a through hole arranged on the side wall.
7. The acid gas replacement device according to claim 4, wherein the storage battery and the direct current pump are arranged outside the alkaline solution tank, and the sludge tank is fixedly arranged on the outer side wall of the alkaline solution tank and positioned above the storage battery and the direct current pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221042409.6U CN217857890U (en) | 2022-04-29 | 2022-04-29 | Sour gas replacement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221042409.6U CN217857890U (en) | 2022-04-29 | 2022-04-29 | Sour gas replacement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217857890U true CN217857890U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221042409.6U Active CN217857890U (en) | 2022-04-29 | 2022-04-29 | Sour gas replacement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217857890U (en) |
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2022
- 2022-04-29 CN CN202221042409.6U patent/CN217857890U/en active Active
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