CN214170520U - Natural gas well mouth atomizing desulfurization antiscale system - Google Patents
Natural gas well mouth atomizing desulfurization antiscale system Download PDFInfo
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- CN214170520U CN214170520U CN202120091486.XU CN202120091486U CN214170520U CN 214170520 U CN214170520 U CN 214170520U CN 202120091486 U CN202120091486 U CN 202120091486U CN 214170520 U CN214170520 U CN 214170520U
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Abstract
The utility model belongs to the technical field of natural gas desulfurization hinders dirty system, concretely relates to natural gas well head atomizing desulfurization hinders dirty system, including natural gas well head output fluid line, vapour and liquid separator, first gas-supply line, three way connection, static swirl mixer, second gas-supply line, well head notes mellow wine pipeline, first infusion pipeline, solid antisludging agent place storehouse, second infusion pipeline, mixing line. Natural gas well mouth atomizing desulfurization antiscale system solves among the present sym-triazine desulfurizer solution gas well mouth atomizing desulfurization technology, and the inorganic salt scale deposit of ground gas-supply line is blockked up, and subsequent pipeline pickling unblocks work is wasted time and energy, and the operation degree of difficulty is big to the problem that has the potential safety hazard along with.
Description
Technical Field
The utility model belongs to the technical field of natural gas desulfurization hinders dirty, concretely relates to natural gas well head atomizing desulfurization hinders dirty system.
Background
The treatment of hydrogen sulfide in natural gas is always a difficult problem for the development of sulfur-containing gas reservoirs in gas fields. The s-triazine desulfurizer has the characteristics of high reaction speed with hydrogen sulfide, irreversible reaction, water-soluble reaction product and the like, is widely applied to the field of domestic and foreign oil and gas fields as a novel desulfurizing agent in recent years, particularly applied to a gas well mouth desulfurizing technology with low sulfur potential, has low investment cost and small occupied area, can simply mix and react fluid produced by the gas well mouth with the desulfurizing agent to enable the concentration of the hydrogen sulfide in natural gas to be within the national natural gas second-class gas standard range, and can effectively realize the effect of well mouth treatment of a distributed low-sulfur gas well.
At present, the domestic research on the well mouth atomization desulfurization technology of the triazine solution gas well is still in the starting stage, and the utility model patent of patent number CN208605935U discloses a technology of setting up desulfurizing agent atomizer at well mouth gas transmission line, with the medicament to atomizer department pump sending, the medicament forms the medicament spraying through the atomizer blowout, the medicament spraying and the gas transmission line in produce the fluid mixing reaction with the hydrogen sulfide technology of getting rid of. Patent No. CN211420089U discloses a atomization treatment technique for gas well wellhead desulfurizing agent, which increases the contact path between the triazine solution desulfurizing agent after atomization and the wellhead fluid, thereby prolonging the time of mixing reaction, and improving the desulfurizing efficiency of the triazine solution desulfurizing agent gas well wellhead. Since 2015, the triazine solution gas well wellhead atomization desulfurization technology is subjected to field tests in the middle petrochemical cattle land gas field and the Changqing Su Li Ge gas field of the Ordors basin, and shows that the triazine solution has a good desulfurization effect.
The existing sym-triazine solution gas well wellhead atomization desulfurization process adopts a mode that medicament atomized liquid drops and wellhead fluid are directly mixed in a ground pipeline or a wellhead container, and a medicament and hydrogen sulfide directly undergo a chemical reaction to carry out hydrogen sulfide absorption treatment, but the problem of inorganic scale blockage at the positions of a ground gathering pipeline, a valve and an elbow is often caused in the actual operation process. The reason for the inorganic scale blockage is analyzed to be four points as follows: (1) the produced fluid of the gas well often carries a large amount of gas reservoir water with high mineralization degree, not only acid gases such as hydrogen sulfide, carbon dioxide and the like are dissolved, but also a large amount of Ca is contained2+、Mg2+Scaling ions; (2) the S-triazine solution desulfurizing agent has a high alkali value, a pH value of 9-11 and is easy to hydrolyze under an acidic condition; (3) when the atomized liquid drops of the medicament are contacted with gas reservoir water, the pH value of the water phase can be instantly changed, so that the scaling tendency of the water phase is changed; (4) the gas reservoir liquid contains suspended matters such as silt, wax, asphaltene and the like, and can quickly agglomerate or flocculate crystallized precipitates such as carbonate, sulfate and the like together to accelerate the precipitation of crystals. The large scale sample is polymerized and coagulated and adheres to the surface of metal to form blockage, so that the normal production of a gas well is influenced, the subsequent pipeline acid washing blockage removal work is time-consuming and labor-consuming, the operation difficulty is high, and the potential safety hazard is accompanied.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a natural gas well head atomizing desulfurization antisludging system, solve in the current sym-triazine solution gas well head atomizing desulfurization technology, ground gas-supply line inorganic salt scale deposit blocks up, and subsequent pipeline pickling unblocks work time-consuming and energy-consuming, and the operation degree of difficulty is big to the problem that has the potential safety hazard is accompanied.
The utility model discloses an implementation process as follows:
a natural gas wellhead atomization desulfurization scale inhibition system comprises a natural gas wellhead output fluid line, a gas-liquid separator, a first gas pipeline, a three-way joint, a static cyclone mixer, a second gas pipeline, a wellhead alcohol injection pipeline, a first liquid conveying pipeline, a solid scale inhibitor placing bin, a second liquid conveying pipeline and a mixing pipeline; the natural gas well mouth output fluid pipeline is connected with a gas-liquid separator, the top of the gas-liquid separator is connected with a first gas pipeline, the first gas pipeline is connected with a first interface of a three-way joint, a second interface of the three-way joint is connected with one end of a static cyclone mixer, one end of a well mouth alcohol injection pipeline is communicated with one end of the static cyclone mixer through a third interface of the three-way joint, one end of the well mouth alcohol injection pipeline is positioned on a central axis of one end of the static cyclone mixer, the other end of the static cyclone mixer is connected with a second gas pipeline, the lower part of the gas-liquid separator is connected with the first liquid conveying pipeline, the first liquid conveying pipeline is connected with a solid scale inhibitor placing bin, the solid scale inhibitor placing bin is connected with the second liquid conveying pipeline, and the second liquid conveying pipeline is connected with a mixing pipeline after intersecting.
Further, be provided with the filter core that is used for filtering gaseous in the vapour and liquid separator, the filter core upper end is the filter core support, and the filter core support top holds the chamber for gaseous, and the filter core periphery is provided with the whirl blade support, is provided with the whirl blade on the whirl blade support, and the below of whirl blade support holds the chamber for liquid, and the lower part outside of vapour and liquid separator is provided with the level gauge, the level gauge holds the chamber intercommunication with liquid for show liquid holds the liquid level of liquid in the chamber.
Further, a first gas transmission pipeline is connected with a first interface of the three-way joint through a flange, a second interface of the three-way joint is connected with one end of the static cyclone mixer through a flange, the other end of the static cyclone mixer is connected with a second gas transmission pipeline through a flange, and the first liquid transmission pipeline is connected with two ends of the solid scale inhibitor placing bin through flanges.
Further, a first ball valve is arranged on the wellhead alcohol injection pipeline, and an atomizing nozzle is arranged at one end of the wellhead alcohol injection pipeline communicated with the static cyclone mixer.
Further, a pneumatic valve is arranged at the joint of the lower part of the gas-liquid separator and the first liquid conveying pipeline, a second ball valve is arranged at the joint of the solid scale inhibitor placing bin and the first liquid conveying pipeline, and a third ball valve is arranged on the second liquid conveying pipeline.
Further, the both ends that the storehouse was placed to solid antisludging agent are provided with the filter screen, the filter screen is located the back taper type structure that the solid antisludging agent placed the storehouse both ends flange, solid antisludging agent is placed and is provided with the bin mouth that is used for getting on the storehouse and puts the antisludging agent, be provided with sealed cang gai on the bin mouth.
Compared with the prior art, natural gas well head atomizing desulfurization antisludging system has following beneficial effect or advantage at least:
(1) the gas-liquid separation method of the gas well mouth comprises the steps of separating gas and liquid from a gas well mouth containing hydrogen sulfide, enabling the gas phase fluid to enter a static mixer after gas-liquid separation through a two-phase separator, enabling the gas phase fluid to enter a ground gas transmission pipeline after mixed reaction with atomized triazine desulfurizing agent solution liquid drops injected into an alcohol injection pipeline in the static cyclone mixer, enabling liquid phase fluid to enter the ground gas transmission pipeline after solid scale inhibitors are placed in a bin, and enabling the gas phase fluid at the well mouth to be subjected to gas-liquid separation and then to be subjected to parallel treatment.
(2) The sym-triazine desulfurizer solution is injected into the static cyclone mixer through an alcohol injection pipeline, and atomized liquid drops are formed in a cavity of the static cyclone mixer through an atomizing nozzle. After atomized liquid drops and gas-phase fluid pass through the rotational flow baffle in the mixer cavity, cyclone unsteady-state fluid is formed in the mixer cavity and in a rear-end ground gas transmission pipeline, so that the contact efficiency of the liquid drops of the s-triazine solution and hydrogen sulfide in the gas-phase fluid is greatly improved, the desulfurization efficiency of the s-triazine desulfurizer solution is improved, and after acidic gases such as hydrogen sulfide and carbon dioxide in the gas-phase fluid are contacted with the s-triazine desulfurizer solution, the pH value of the desulfurizer solution can be reduced, and the scaling tendency of the desulfurizer solution and the liquid-phase fluid after the contact is reduced.
(3) After the gas reservoir liquid phase fluid is separated by the two-phase separator, the gas reservoir liquid phase fluid passes through the solid scale inhibitor placing bin with the filter screens at two ends, the solid scale inhibitor has slow release performance, and is slowly dissolved in the liquid phase fluid after being contacted with the liquid phase fluid, so that the liquid phase fluid already contains the scale inhibitor component before being contacted with the sym-triazine solution, and the liquid phase fluid is not scaled and blocked a pipeline after being contacted with the alkaline sym-triazine solution. The solid scale inhibitor placing bin can be disassembled and replaced, so that the problem that a pump needs to be filled when a liquid scale inhibitor is used and the problem of compatibility with an s-triazine solution are avoided.
(4) The utility model provides an integration device system based on triazine solution desulfurizer has realized the desulfurization of well head and the performance that hinders dirty simultaneously, and complete system need not outer power moreover, need not artificial intervention, has improved the work efficiency in gas field well site, has reduced the running cost.
Drawings
FIG. 1 is a block diagram of the atomization desulfurization scale inhibition system of the natural gas wellhead;
FIG. 2 is a schematic diagram of the route of the gas, liquid and sulfur removal agent of the natural gas wellhead atomization desulfurization scale inhibition system of the utility model;
FIG. 3 is a schematic view of a screen;
in the figure, 1 natural gas well mouth output fluid line, 2 vapour and liquid separator, 21 filter core, 22 filter core support, 23 gaseous chamber of holding, 24 swirl vane support, 25 swirl vane, 26 liquid chamber of holding, 27 level gauge, 31 first gas line, 4 three way connection, 5 static swirl mixer, 32 second gas line, 6 well mouth notes alcohol pipeline, 61 first ball valve, 62 atomizer, 71 first infusion pipeline, 8 solid antisludging agent places the storehouse, 81 filter screens, 72 second infusion pipeline, 9 mixed pipeline, 10 flanges, 11 pneumatic valves, 12 second ball valves, 13 third ball valves.
Detailed Description
The present invention will be further described with reference to the following examples.
In order to solve present sym triazine solution gas well head atomizing desulfurization technology, the inorganic salt scale deposit of ground gas transmission line is blockked up, and subsequent pipeline pickling unblocks work and wastes time and energy, and the operation degree of difficulty is big to the problem that has the potential safety hazard along with, the utility model provides a natural gas well head atomizing desulfurization antisludging system.
Example 1
The atomization desulfurization scale inhibition system of the natural gas wellhead in the embodiment is shown in fig. 1-3, and comprises a natural gas wellhead output fluid line 1, a gas-liquid separator 2, a first gas pipeline 31, a three-way joint 4, a static cyclone mixer 5, a second gas pipeline 32, a wellhead alcohol injection pipeline 6, a first liquid conveying pipeline 71, a solid scale inhibitor placing bin 8, a second liquid conveying pipeline 72 and a mixing pipeline 9;
a natural gas wellhead output fluid pipe 1 is connected with a gas-liquid separator 2, the top of the gas-liquid separator 2 is connected with a first gas pipeline 31, the first gas pipeline 31 is connected with a first interface of a three-way joint 4 through a flange 10, a second interface of the three-way joint 4 is connected with one end of a static cyclone mixer 5 through a flange 10,
the one end of well head notes alcohol pipeline 6 is passed through three interface and the one end intercommunication of static swirl mixer 5 of three way connection 4, well head notes alcohol pipeline 6's one end and is located the axis of 5 one ends of static swirl mixer, be provided with first ball valve 61 on the well head notes alcohol pipeline 6, well head notes alcohol pipeline 6 is provided with atomizer 62 with the one end of 5 intercommunications of static swirl mixer, atomizer 62 is on the axis of 5 one ends of static swirl mixer promptly, and does not influence gas admission static swirl mixer 5 in the first gas line 31. The other end of the static cyclone mixer 5 is connected with a second gas pipeline 32 through a flange 10, the lower part of the gas-liquid separator 2 is connected with a first liquid conveying pipeline 71, the first liquid conveying pipeline 71 is connected with two ends of a solid scale inhibitor placing bin 8 through flanges 10, the solid scale inhibitor placing bin 8 is connected with a second liquid conveying pipeline 72, and the second liquid conveying pipeline 72 is connected with a mixing pipeline 9 after meeting with the second gas pipeline 32. The joint of the lower part of the gas-liquid separator 2 and the first liquid conveying pipeline 71 is provided with an air-operated valve 11, the joint of the solid antisludging agent placing bin 8 and the first liquid conveying pipeline 71 is provided with a second ball valve 12, and the second liquid conveying pipeline 72 is provided with a third ball valve 13.
Wherein, be provided with in the vapour and liquid separator 2 and be used for filtering gaseous filter core 21, filter core 21 upper end is filter core support 22, and filter core support 22 top is gaseous chamber 23 that holds, and filter core 21 periphery is provided with whirl blade support 24, is provided with whirl blade 25 on the whirl blade support 24, and the below of whirl blade support 24 holds the chamber 26 for liquid, and the lower part outside of vapour and liquid separator 2 is provided with level gauge 27, level gauge 27 holds the chamber 26 intercommunication with liquid for show the liquid level of liquid in the liquid holds the chamber 26. The gas-liquid separator 2 can also be replaced by a large-flow fine filter of Itoenot TM-D series, and the manufacturer is a tin-free Itoenot filter system company Limited. Also can choose for use and satisfy the utility model the similar equipment of other models, producer of structure. Solid antisludging agent places the both ends in storehouse 8 and is provided with filter screen 81, filter screen 81 is located solid antisludging agent and places the back taper type structure of 8 both ends flanges 10 in storehouse, more convenient change and fixed, solid antisludging agent is provided with the cang kou that is used for getting on placing storehouse 8 and puts antisludging agent, be provided with sealed cang gai on the cang kou. The static cyclone mixer 5 is obtained by purchasing, and the model is SV type static mixer which is manufactured by Nantong Precision fluid machinery Co.
Natural gas well head atomizing desulfurization antisludging system's theory of operation:
the fluid produced in the natural gas wellhead production fluid line 1 is a mixed fluid of gas and liquid, the mixed fluid is input into the gas-liquid separator 2, the gas enters the gas accommodating cavity 23 through the filter element 21, the liquid flows downwards along the spiral swirl vanes 25 to the liquid accommodating cavity 26, and the liquid level meter 27 displays the liquid level height in the liquid accommodating cavity 26.
Gas in the gas accommodating cavity 23 is input into the first gas transmission pipeline 31 from the top of the gas-liquid separator 2 and then input into the static cyclone mixer 5 through the three-way joint 4, the desulfurizing agent enters from the wellhead alcohol injection pipeline 6 and is sprayed into the static cyclone mixer 5 from the atomizing nozzle 62, so that the desulfurizing agent is mixed with the gas to remove hydrogen sulfide in the gas, and the gas after sulfur removal is output from the second gas transmission pipeline 32.
The liquid in the liquid accommodating cavity 26 is input into a first liquid conveying pipeline 71 from the lower part of the gas-liquid separator 2, the liquid passes through the filter screens 81 at the two ends of the solid antisludging agent placing bin 8 and then is input into a second liquid conveying pipeline 72, and then the liquid mixed with the antisludging agent is mixed with the gas after sulfur removal and is output from a mixing pipeline 9.
The solid scale inhibitor is placed in the solid scale inhibitor placing bin 8, when liquid flows through the solid scale inhibitor placing bin 8, the solid scale inhibitor is dissolved in the liquid and is used for dispersing scale inhibition, and the filter screens 81 at the two ends of the solid scale inhibitor placing bin 8 are used for preventing undissolved scale inhibitor from blocking an infusion pipeline. The first ball valve 61 is arranged on the wellhead alcohol injection line 6 and is used for opening or closing the wellhead alcohol injection line 6. The pneumatic valve 11 is arranged at the connection part of the lower part of the gas-liquid separator 2 and the first liquid conveying pipeline 71 and is used for opening or closing the liquid outflow pipeline at the lower part of the gas-liquid separator 2, and the second ball valve 12 and the third ball valve 13 are used for opening or closing the first liquid conveying pipeline 71 and the second liquid conveying pipeline 72 and temporarily stopping liquid flow when the solid antisludging agent placing bin 8 is maintained or reloaded.
The utility model discloses it has equal triazine desulfurizer solution to annotate in well head notes alcohol pipeline 6 for desorption hydrogen sulfide. The s-triazine desulfurizer solution is an aqueous solution of one or more triazine ring structure compounds synthesized by formaldehyde and amine compounds. The solid scale inhibitor is a granular, blocky or rodlike solid material of a scale inhibition and dispersion agent with slow release performance in water, and is a blending material of organic phosphonic acid, organic phosphate, polycarboxylic acid and polycarboxylate and a high polymer material with slow solubility in water.
The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of conceiving, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (6)
1. The utility model provides a natural gas well head atomizing desulfurization antisludging system which characterized in that: the system comprises a natural gas wellhead production fluid line (1), a gas-liquid separator (2), a first gas pipeline (31), a three-way joint (4), a static cyclone mixer (5), a second gas pipeline (32), a wellhead alcohol injection pipeline (6), a first liquid conveying pipeline (71), a solid scale inhibitor placing bin (8), a second liquid conveying pipeline (72) and a mixing pipeline (9); a natural gas wellhead output fluid pipeline (1) is connected with a gas-liquid separator (2), the top of the gas-liquid separator (2) is connected with a first gas pipeline (31), the first gas pipeline (31) is connected with a first interface of a three-way joint (4), a second interface of the three-way joint (4) is connected with one end of a static cyclone mixer (5), one end of a wellhead alcohol injection pipeline (6) is communicated with one end of the static cyclone mixer (5) through a third interface of the three-way joint (4), one end of the wellhead alcohol injection pipeline (6) is positioned on a central axis at one end of the static cyclone mixer (5), the other end of the static cyclone mixer (5) is connected with a second gas pipeline (32), the lower part of the gas-liquid separator (2) is connected with a first liquid transfusion pipeline (71), the first liquid transfusion pipeline (71) is connected with a solid scale inhibitor placing bin (8), the solid scale inhibitor placing bin (8) is connected with a second liquid conveying pipeline (72), and the second liquid conveying pipeline (72) is connected with the mixing pipeline (9) after meeting with the second gas conveying pipeline (32).
2. The atomization desulfurization scale inhibition system for the natural gas wellhead as claimed in claim 1, is characterized in that: be provided with in vapour and liquid separator (2) and be used for filtering gaseous filter core (21), filter core (21) upper end is filter core support (22), and filter core support (22) top holds chamber (23) for gas, and filter core (21) periphery is provided with whirl blade support (24), is provided with whirl blade (25) on whirl blade support (24), and the below of whirl blade support (24) holds chamber (26) for liquid, and the lower part outside of vapour and liquid separator (2) is provided with level gauge (27), level gauge (27) hold chamber (26) with liquid and communicate for show the liquid level of liquid in liquid holds chamber (26).
3. The atomization desulfurization scale inhibition system for the natural gas wellhead as claimed in claim 1, is characterized in that: a first gas pipeline (31) is connected with a first interface of a three-way joint (4) through a flange (10), a second interface of the three-way joint (4) is connected with one end of a static cyclone mixer (5) through the flange (10), the other end of the static cyclone mixer (5) is connected with a second gas pipeline (32) through the flange (10), and a first infusion pipeline (71) is connected with two ends of a solid antisludging agent placing bin (8) through the flange (10).
4. The atomization desulfurization scale inhibition system for the natural gas wellhead as claimed in claim 1, is characterized in that: a first ball valve (61) is arranged on the wellhead alcohol injection pipeline (6), and an atomizing nozzle (62) is arranged at one end of the wellhead alcohol injection pipeline (6) communicated with the static cyclone mixer (5).
5. The atomization desulfurization scale inhibition system for the natural gas wellhead as claimed in claim 1, is characterized in that: a pneumatic valve (11) is arranged at the joint of the lower part of the gas-liquid separator (2) and the first liquid conveying pipeline (71), a second ball valve (12) is arranged at the joint of the solid scale inhibitor placing bin (8) and the first liquid conveying pipeline (71), and a third ball valve (13) is arranged on the second liquid conveying pipeline (72).
6. The atomization desulfurization scale inhibition system for the natural gas wellhead as claimed in claim 1, is characterized in that: solid antisludging agent places the both ends in storehouse (8) and is provided with filter screen (81), filter screen (81) are located solid antisludging agent and place the back taper type structure of storehouse (8) both ends flange (10), solid antisludging agent is placed and is provided with the bin mouth that is used for getting on storehouse (8) and puts antisludging agent, be provided with sealed cang gai on the bin mouth.
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| CN202120091486.XU CN214170520U (en) | 2021-01-14 | 2021-01-14 | Natural gas well mouth atomizing desulfurization antiscale system |
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| CN202120091486.XU CN214170520U (en) | 2021-01-14 | 2021-01-14 | Natural gas well mouth atomizing desulfurization antiscale system |
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