CN113025403A - Secondary gas desulfurization purification device in fireflood oil recovery - Google Patents
Secondary gas desulfurization purification device in fireflood oil recovery Download PDFInfo
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- CN113025403A CN113025403A CN202110368951.4A CN202110368951A CN113025403A CN 113025403 A CN113025403 A CN 113025403A CN 202110368951 A CN202110368951 A CN 202110368951A CN 113025403 A CN113025403 A CN 113025403A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
Abstract
The invention relates to a secondary gas desulfurization and purification device in fire flooding oil extraction, which comprises a tower body, a first partition, a second partition, a third partition, a fourth partition and a fifth partition, wherein the first partition, the second partition, the third partition, the fourth partition and the fifth partition are arranged in the tower body from bottom to top and divide the interior of the tower body into a bathing cavity, a buffer cavity, an oxidation cavity, a gathering cavity, a spraying cavity and a drying cavity from bottom to top; when handling secondary gas, secondary gas that enters into in the tower body clears away the elemental sulphur of easily dissolving in water through the water bath, enter into the oxidation chamber after the buffering and carry out oxidation treatment, carry out further absorption through the liquid that sprays after the oxidation to the gas after the reaction, then get rid of after the drying, can effectually carry out abundant absorption to the elemental sulphur in secondary gas and get rid of, the bathing with spray liquid recycles, can carry out abundant absorption to the elemental sulphur, other elements that are producing carrying out the oxidation simultaneously also can neutralize the elemental sulphur after the bathing, it can be clear away completely to the elemental sulphur, the reuse of bathing waste water has been improved.
Description
Technical Field
The invention relates to the technical field of fireflood oil extraction devices, in particular to a secondary gas desulfurization and purification device in fireflood oil extraction.
Background
At present, with the continuous expansion of the scale of the fireflood oil extraction technology, the output of fireflood secondary gas is continuously increased, the proportion of combustible gas contained in the generated fireflood secondary gas is low, the range is 3-15% (v), the fireflood secondary gas cannot be directly combusted as fuel, and the fireflood secondary gas is treated in a centralized discharge mode. The concentrated external row of gaseous causes surrounding environment pollution and energy waste, causes certain injury to staff's health, has serious potential safety hazard, needs to administer the secondary gas of fireflood.
The conventional secondary gas contains a large amount of sulfur elements, which causes great pollution to air during discharge, and the sulfur elements in the secondary gas cannot be completely removed during treatment of the discharged secondary gas.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a secondary gas desulfurization and purification device in fire flooding oil production, which can desulfurize and purify the secondary gas in the secondary gas and reduce the pollution to human bodies and environment caused by emission.
In order to achieve the purpose, the invention adopts the following technical scheme that the device comprises a tower body, a first partition, a second partition, a third partition, a fourth partition and a fifth partition, wherein the first partition, the second partition, the third partition, the fourth partition and the fifth partition are arranged in the tower body from bottom to top and divide the interior of the tower body into a bathing cavity, a buffer cavity, an oxidation cavity, a gathering cavity, a spraying cavity and a drying cavity from bottom to top; the bottom of the tower body is provided with a secondary gas inlet communicated with the bathing cavity, and the top of the tower body is provided with a gas outlet communicated with the drying cavity;
a plurality of bathing partition plates are arranged in the bathing cavity, a first pressure one-way valve and a second pressure one-way valve are respectively arranged at two ends of each bathing partition plate, the first pressure one-way valves and the second pressure one-way valves on two adjacent bathing partition plates are staggered, the first pressure one-way valves and the second pressure one-way valves are opposite in opening direction, and the second pressure one-way valve which flows from top to bottom and is arranged on the bathing partition plate at the bottom is far away from one end of the secondary gas inlet; the opening pressure of the second pressure one-way valve is less than the opening pressure of the second pressure one-way valve; secondary gas-generating bath liquid is arranged in the bath cavity;
the buffering assembly is arranged in the buffering cavity and comprises a spiral pipe arranged in the buffering cavity, the peripheral end part of the spiral pipe is communicated with a bathing air outlet arranged on the first partition body, a communicating pipe is arranged at the center of the spiral pipe and passes through the second partition body to be communicated with the oxidation cavity;
an oxidation assembly for oxidizing the secondary gas after bathing is arranged in the oxidation cavity, and the oxidized secondary gas enters the collection cavity through a plurality of vent holes in the third partition body;
the collecting cavity is communicated with the spraying cavity through a fourth partition body, a spraying pipe assembly is arranged in the spraying cavity, two ends of the spraying pipe assembly are respectively and rotatably connected with the inner wall of the tower body, a water inlet pipe is rotatably connected to a water inlet at one end of the spraying pipe assembly, the end part of the water inlet pipe extends to the bottom of the tower body to be communicated with the bathing cavity, and the end part of the water inlet pipe connected to the bathing cavity is positioned at the lower part of the bathing partition plate at the lowest part and is positioned at one end of the second pressure one-way valve; the tower body at the bottom of the spraying cavity is provided with a water outlet pipeline, and the end part of the water outlet pipeline extends to the bottom of the tower body and is communicated with the cavity above the bath clapboard at the uppermost layer in the bath cavity; a water suction pump is arranged on the water inlet pipeline, and a first control valve is arranged on the water outlet pipeline;
the spraying cavity is communicated with the drying cavity through an inclined vent hole formed in the fifth partition body, and a drying assembly is arranged in the drying cavity.
The oxidation assembly comprises a plurality of oxidation cylinders which are arranged concentrically, oxidation fillers are filled among the oxidation cylinders which are arranged concentrically, cavities formed among the oxidation cylinders are communicated through a thermal communication assembly arranged on the oxidation cylinders, the bottom of the oxidation cylinder at the innermost layer among the oxidation cylinders is communicated with the buffer assembly, and a plurality of annular cavities formed among the oxidation cylinders are respectively communicated with the aggregation cavity through a plurality of vent holes arranged on the third partition body; when the secondary gas entering the oxidation cylinder body at the innermost layer and the oxidation filling material are subjected to oxidation reaction, and the generated heat is excessive, the heat communication assembly is opened, and the secondary gas in the oxidation cylinder body at the innermost layer enters the annular cavity at the periphery of the oxidation cylinder body at the innermost layer through the heat communication assembly.
The thermal communication assembly comprises a connecting cylinder body which is embedded on the inner wall of the oxidation cylinder body, a heat conductor which seals and separates a channel in the connecting cylinder body is arranged in the connecting cylinder body, and a thermal expansion and cold shrinkage body is arranged in the heat conductor;
a connecting channel parallel to the central line of the connecting cylinder is arranged in the connecting cylinder, one end of the connecting channel is communicated with the inner channel of the connecting cylinder through an oxidation air inlet, and the other end of the connecting channel extends to the rear end of the heat conductor and is communicated with the inner channel of the connecting cylinder through an oxidation air outlet;
a lever is arranged in the connecting channel, one end of the lever close to the oxidation air outlet is movably connected with a fulcrum arranged in the connecting channel, the end part of the lever is hinged with a connecting rod through a hinged piece, and the connecting rod is fixedly connected with a plugging piston arranged in the oxidation air inlet;
the end part of the thermal expansion and cold contraction body is fixedly connected with a push rod, and the end part of the push rod enters the connecting channel and is hinged with the lever; when the expansion body expands, the push rod pushes one end of the lever to move upwards, the other end of the lever drives the plugging piston to move downwards, the plugging piston leaves the oxidation air inlet, the inner channel of the connecting cylinder is communicated with the connecting channel through the oxidation air inlet, the annular cavities at two ends of the connecting cylinder are communicated, and secondary gas for oxidation enters the outer annular cavity to be oxidized with the oxidation filling material.
The diameter of the end part of the oxidation air inlet close to the inner channel of the connecting cylinder body is larger than that of the end part of the oxidation air inlet close to the connecting channel.
The fourth partition body comprises a partition body, the end face of the partition body, which is positioned in the gathering cavity, is an arc groove face, the end face of the partition body, which is positioned in the spraying cavity, is a convex face with two ends extending downwards, and the middle part of the partition body is provided with a gas channel for communicating the gathering cavity with the spraying cavity; the spraying cavity is internally provided with a shielding top cover, the shielding top cover is fixedly connected with the top of the partition body through a support, and the shielding top cover is positioned right above the gas channel.
The shielding edges extending downwards at the two ends of the shielding top cover are parallel to the plane extending downwards from the convex surface at the upper part of the partition body.
The spray pipe assembly comprises a spray pipe movably connected with the tower body, multiple sections of spray head groups which are annularly arranged are arranged on the spray pipe, each annular spray head group is a spray head which is annularly arranged by multiple spray heads, the nozzles of the multiple spray heads are positioned on the same side, and the water flow direction sprayed by each spray head is tangent to a circular ring formed by the spray heads.
One side of the tower body is provided with a spraying liquid box body, one end of the spraying liquid box body is communicated with a water outlet pipeline through a water outlet connecting pipeline, the upper end of the spraying liquid box body is communicated with the water outlet pipeline through a water inlet connecting pipeline, the first control valve is positioned in the middle of a connecting node of the water outlet connecting pipeline and the water inlet connecting pipeline with the water outlet pipeline, and the water outlet connecting pipeline is provided with a second control valve.
The invention has the beneficial effects that: when the secondary gas is treated, the secondary gas entering the tower body firstly clears sulfur elements which are easy to dissolve in water through a water bath, the secondary gas after being sequentially desulfurized goes upwards, the secondary gas after being sequentially desulfurized enters the oxidation cavity after being buffered for oxidation treatment, the gas after being oxidized enters the spray cavity after being gathered, the gas after reaction is further absorbed through the sprayed liquid, and then the gas is dried and discharged, so that the sulfur elements in the secondary gas can be effectively and fully absorbed and removed, the bath and the spray liquid are recycled, the sulfur elements can be fully absorbed, other elements generated during oxidation can also neutralize the sulfur elements after bath, the sulfur elements can be completely removed, and the recycling of bath wastewater is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic top view of an oxidation assembly of the present invention;
FIG. 3 is a schematic structural view of a thermal communication assembly of the present invention;
FIG. 4 is a schematic structural view of a fourth separator according to the present invention;
FIG. 5 is a schematic cross-sectional view of the shower assembly of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
As shown in fig. 1, the fire flooding oil recovery secondary gas desulfurization purification device comprises a tower body 1, wherein the tower body is built by corrosion-resistant materials, has good sealing performance, and is arranged in the tower body 1 from bottom to top, and a first partition body 2, a second partition body 18, a third partition body 4, a fourth partition body 5 and a fifth partition body 6 which are arranged in the tower body 1 and divide the interior of the tower body 1 into a bathing cavity, a buffer cavity, an oxidation cavity, a gathering cavity, a spraying cavity and a drying cavity from bottom to top; a secondary gas inlet 11 communicated with the bathing cavity is formed in the bottom of the tower body 1, and a gas outlet 13 communicated with the drying cavity is formed in the top of the tower body 1; the bath cavity is used for bathing introduced secondary gas, the gas which is easy to dissolve in water in the secondary gas is absorbed, the buffer cavity is used for buffering the absorbed gas, the phenomenon that the gas has unstable air pressure when entering the next stage is avoided, an oxidizing substance is arranged in the oxidizing cavity and can react with sulfur in the gas to absorb the sulfur substances which are not easy to dissolve in water in the secondary gas, the gathering cavity is used for collecting the secondary gas after reaction and enhancing the rising pressure, the spraying cavity is used for spraying and bathing the oxidized secondary gas, and the gas after reaction enters the drying cavity to be dried and then is discharged;
specifically, a plurality of bathing partition plates 7 are arranged in the bathing cavity, a first pressure one-way valve 8 and a second pressure one-way valve 9 are respectively arranged at two ends of each bathing partition plate 7, the first pressure one-way valves 8 and the second pressure one-way valves 9 on two adjacent bathing partition plates 7 are staggered, the first pressure one-way valves 8 and the second pressure one-way valves 9 are opposite in access, and the second pressure one-way valve 9 which flows from top to bottom and is arranged on the bathing partition plate 7 at the bottommost part is far away from one end of a secondary gas inlet 11; the opening pressure of the second pressure one-way valve 9 is smaller than the opening pressure of the first pressure one-way valve 8; secondary gas-generating bath liquid is arranged in the bath cavity; the bathing cavities are divided into a plurality of independent bathing cavities from top to bottom by the bathing partition plates 7, the second pressure one-way valves for secondary gas to pass through are arranged on the bathing partition plates and are arranged adjacently and alternately up and down, so that the path of the secondary gas subjected to gift washing during bathing is prolonged, and bathing can be fully performed; specifically, when bathing is carried out, the secondary gas introduced through the secondary gas inlet enters the liquid below the bath partition plate at the lowest part, then passes through the second pressure one-way valve at the rightmost end as shown in figure 1, then enters the bathing at the upper end, passes through the second pressure one-way valve at the left end from right to left, and then reaches the upper layer, so that the bathing path of the secondary gas in the rising process is enlarged, and the removal of sulfur elements which are easily dissolved in water in the secondary gas is enhanced;
a buffer assembly 17 is arranged in the buffer cavity, the buffer assembly 17 comprises a spiral pipe arranged in the buffer cavity, the peripheral end part of the spiral pipe is communicated with a bathing air outlet arranged on the first partition body 2, a communicating pipe is arranged at the center of the spiral pipe, and the communicating pipe passes through the second partition body 18 and is communicated with the oxidation cavity; the bathed waste gas enters the spiral pipe, and secondary gas entering due to the spiral pipe can be fully buffered in the spiral pipe, so that the situation that the pressure of the secondary gas is different when the secondary gas enters the oxidation cavity, and the situation that oxidation is fully supplemented is avoided;
an oxidation component 3 for oxidizing the secondary gas after bathing is arranged in the oxidation cavity, and the oxidized secondary gas enters the collection cavity through a plurality of vent holes 19 on the third partition body 4; the oxidation assembly is also internally provided with an oxidation substance which reacts with the sulfur-containing element substance, and the aggregation cavity is used for increasing the rising pressure of the secondary gas;
the gathering cavity is communicated with the spraying cavity through a fourth partition body 5, a spraying pipe assembly 14 is arranged in the spraying cavity, two ends of the spraying pipe assembly 14 are respectively and rotatably connected with the inner wall of the tower body 1, a water inlet pipe 10 is rotatably connected to a water inlet at one end of the spraying pipe assembly, the end part of the water inlet pipe 10 extends to the bottom of the tower body 1 to be communicated with the bathing cavity, and the end part connected to the water inlet pipe 10 of the bathing cavity is positioned at the lower part of the bathing partition plate 7 at the lowest part and is positioned at one end of a second pressure one-way valve 9; the tower body 1 at the bottom of the spraying cavity is provided with a water outlet pipeline 12, and the end part of the water outlet pipeline 12 extends to the bottom of the tower body 1 and is communicated with the cavity above the bath clapboard 7 at the uppermost layer in the bath cavity; a water suction pump 15 is arranged on the water inlet pipeline 10, and a first control valve 16 is arranged on the water outlet pipeline 12; the spraying pipe assembly can spray liquid and the oxidized secondary gas to enter the spraying cavity, the liquid sprayed by the spraying assembly is mixed with the gas to react so as to realize desulfurization, the desulfurized gas rises to enter the drying cavity to be dried, the dried gas is discharged, sulfur elements in the secondary gas can be removed by bathing through bath oxidation, the sulfur elements in the secondary gas can be thoroughly removed, and the environment pollution caused by the discharge of the secondary gas is avoided;
when spraying, take out the water of bathing intracavity through the suction pump, spout through the shower subassembly, take place to spray the reaction back with secondary gas, the liquid that falls into to spray the chamber bottom passes through outlet pipe 12 and from newly entering into the bathing chamber and bathe the secondary gas that lets in, when the suction pump draws water, the back is taken away to the bathing water of the lower part in the bathing chamber this moment, first pressure check valve is opened, the water on upper strata enters into the lower floor through first pressure check valve and circulates, can effectually carry out abundant utilization to the bathing water, avoid causing the pollution to the environment.
As shown in fig. 1, a spraying liquid box body 22 is arranged on one side of the tower body 1, one end of the spraying liquid box body 22 is communicated with the water outlet pipeline 12 through a water outlet connecting pipeline 23, the upper end of the spraying liquid box body 22 is communicated with the water outlet pipeline 12 through a water inlet connecting pipeline 25, the first control valve 16 is positioned in the middle of the connecting node of the water outlet connecting pipeline 23, the water inlet connecting pipeline 25 and the water outlet pipeline 12, and a second control valve 24 is arranged on the water outlet connecting pipeline 23. The spraying liquid box body 22 can store and buffer liquid to ensure that the liquid can be used sufficiently, specifically, the first control valve is closed, the sprayed liquid enters the spraying liquid box body 22 and then is buffered, and then the second control valve is opened to introduce the buffered liquid into the bathing cavity.
The spraying cavity is communicated with the drying cavity through an inclined vent hole 21 formed in the fifth partition body 6, and a drying assembly 20 is arranged in the drying cavity. The inclined vent holes 21 are arranged to effectively prevent liquid from entering the upper drying chamber during spraying.
Example 2
On the basis of example 1, as shown in fig. 2, the oxidation module 3 includes a plurality of concentrically arranged oxidation cylinders 301, oxidation fillers 302 are filled between the plurality of concentrically arranged oxidation cylinders 301, the cavities formed between the plurality of oxidation cylinders 301 are communicated through a thermal communication module 303 arranged on the oxidation cylinders 301, the bottom of the innermost oxidation cylinder 301 of the plurality of oxidation cylinders 301 is communicated with the buffer module 17, and the plurality of oxidation cylinders 301 form a plurality of annular cavities which are respectively communicated with the aggregation cavity through a plurality of vent holes 19 arranged on the third partition 4; when the secondary gas entering the innermost oxidation cylinder 301 and the oxidation filling material 302 are subjected to oxidation reaction, and the generated heat is excessive, the thermal communication assembly 303 is opened, and the secondary gas in the innermost oxidation cylinder 301 enters the annular cavity at the periphery of the innermost oxidation cylinder 301 through the thermal communication assembly 303. The upper parts of the annular cavities formed by the oxidation cylinders 301 are respectively communicated with the aggregation cavity, so that the oxidation filling materials in each annular cavity can independently react with sulfur elements in the secondary gas, a large amount of heat can be generated after the oxidation reaction, the higher the heat is, the larger the amount of the sulfur elements in the secondary gas is, and at the moment, in order to perform sufficient reaction, in the process of heat conduction, the heat communication assembly 303 is opened, and the introduced secondary gas enters the peripheral annular space through the heat communication assembly, so that the secondary gas can fully react with the sulfur elements in the secondary gas, and the desulfurization efficiency is improved.
Further, as shown in fig. 3, the thermal communication assembly 303 includes a connection cylinder 3031 embedded on the inner wall of the oxidation cylinder 301, a heat conductor 3035 for sealing and isolating a channel in the connection cylinder 3031 is arranged in the connection cylinder 3031, and a thermal expansion and contraction body 3036 is arranged in the heat conductor 3035; the thermal expansion and contraction body 3036 can effectively expand during heating and transversely expand in the heat conductor 3035; enabling it to be supported laterally;
a connecting channel 3032 parallel to the central line of the connecting cylinder 3031 is arranged in the connecting cylinder 3031, one end of the connecting channel 3032 is communicated with the inner channel of the connecting cylinder 3031 through an oxidation air inlet 3033, and the other end of the connecting channel 3032 extends to the rear end of the heat conductor 3035 and is communicated with the inner channel of the connecting cylinder 3031 through an oxidation air outlet 3034; the oxidation air outlet 3034, the connecting channel 3032 and the oxidation air inlet 3033 can communicate the front end and the rear end of the connecting cylinder 3031, so that secondary gas can enter a peripheral annular space through the connecting cylinder;
a lever 3039 is arranged in the connecting channel 3032, one end of the lever 3039 close to the oxidation air outlet 3034 is movably connected with a fulcrum 30310 arranged in the connecting channel 3032, the end part of the lever 3039 is hinged with a connecting rod 3038 through a hinge 3031, and the connecting rod 3038 is fixedly connected with a blocking piston 3037 arranged in the oxidation air inlet 3033; the diameter of the end part of the oxidation air inlet 3033 close to the channel in the connecting cylinder 3031 is larger than that of the end part close to the connecting channel 3032, so that the blocking piston 3037 can communicate the connecting channel 3032 with the inner cavity of the connecting cylinder 3031 through the oxidation air inlet 3033 when moving downwards through the connecting rod 3038; ensuring that the oxidized secondary gas can pass through the connecting cylinder body to communicate the inner annular cavity with the outer annular cavity;
the end part of the thermal expansion and contraction body 3036 is fixedly connected with a push rod 30311, and the end part of the push rod 30311 enters the connecting channel 3032 and is hinged with the lever 3039; when the thermal expansion and contraction body 3036 expands, the push rod 30311 pushes one end of the lever 3039 to move upwards, the other end of the lever 3039 drives the blocking piston 3037 to move downwards, the blocking piston 3037 leaves the oxidation air inlet 3033, the inner channel of the connecting cylinder 3031 is communicated with the connecting channel 3032 through the oxidation air inlet 3033, the annular cavities at the two ends of the connecting cylinder 3031 are communicated, and secondary gas for oxidation enters the outer annular cavity to be oxidized with the oxidation filling material 302.
When the temperature of the inner rings in the annular spaces is too high due to oxidation reaction, heat is conducted to the thermal expansion and cold shrinkage body, the thermal expansion and cold shrinkage body expands, the end part of the lever 3039 is pushed to rise through the push rod 30311, the other end of the lever 3039 moves downwards, the plugging piston 3037 is pushed to move downwards through the connecting rod, the oxidation air inlet 3033 is opened, secondary air in the inner rings enters the outer rings through the connecting channel, the oxidation air inlet, the connecting channel and the oxidation air outlet to carry out oxidation reaction, the efficiency of the oxidation reaction in the oxidation cavity can be effectively improved, and meanwhile, when the secondary air in the upper body is too much, the secondary air can be effectively dispersed, and the reaction effectiveness is guaranteed. The fulcrum is close to one end of the oxidation air outlet 3034, so that the distance for pushing the plugging piston at the other end to descend when the lever ascends is prolonged.
Example 3
On the basis of embodiment 1, in order to ensure that the fourth partition 5 collects the gas after the oxidation reaction and simultaneously ensure that the spray liquid can be prevented from falling into the collection cavity when spraying is performed, specifically, as shown in fig. 4, the fourth partition 5 includes a partition body 501, an end surface of the partition body 501 located in the collection cavity is an arc-shaped groove surface 502, an end surface located in the spray cavity is a convex surface 503 with two ends extending downward, and a gas passage 504 communicating the collection cavity and the spray cavity is arranged in the middle of the partition body 501; a shielding top cover 505 is arranged in the spraying cavity, the shielding top cover 505 is fixedly connected with the top of the partition body 501 through a support 506, and the shielding top cover 505 is positioned right above the gas channel 504.
The shielding edges extending downwards from both ends of the shielding top cover 505 are parallel to the plane extending downwards from the convex surface 503 on the upper part of the partition body 501.
The shielding top cover 505 can prevent the sprayed liquid from falling down through the gas channel 504 during spraying, and meanwhile, the shielding edge of the shielding top cover 505 is the same as the upper end surface of the convex surface, so that the gas which passes through the gas channel 504 and rises is prevented by the shielding top cover, runs downwards along the inner end surface of the shielding top cover, then goes over the shielding top cover 505 and rises, the gas can be fully dispersed during rising, and full spraying and bathing can be performed during spraying; meanwhile, the lower surface of the fourth partition body is an upward arc-shaped groove surface, so that secondary gas can be collected, and the rising speed of the secondary gas passing through the gas channel 504 is increased.
Example 4
On the basis of embodiment 1, in order to ensure that the shower assembly 14 can perform sufficient shower bath when spraying, as shown in fig. 5, the shower assembly 14 includes a shower 1401 movably connected to the tower 1, the shower 1401 is provided with a plurality of annularly arranged nozzle groups, each annularly arranged nozzle group is a plurality of annularly arranged nozzles 1402, the nozzles 1403 of the plurality of nozzles 1402 are located on the same side, and the direction of water flow ejected by each nozzle 1402 is tangential to the circular ring formed by the nozzles 1402. When spraying, through the water pressure that increases, the water ring of shower water spray is tangent, when spraying the shower can rotate, forms annular water smoke, carries out effectual washing that sprays to last ascending secondary gas, improves the efficiency of washing.
The above embodiments are merely illustrative of the present invention, and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (8)
1. A fire flooding secondary gas desulfurization purification device in oil extraction is characterized by comprising a tower body (1), a first partition body (2), a second partition body (18), a third partition body (4), a fourth partition body (5) and a fifth partition body (6), wherein the first partition body is arranged in the tower body (1) from bottom to top and divides the interior of the tower body (1) into a bathing cavity, a buffer cavity, an oxidation cavity, a gathering cavity, a spraying cavity and a drying cavity from bottom to top; a secondary gas inlet (11) communicated with the bathing cavity is formed in the bottom of the tower body (1), and a gas outlet (13) communicated with the drying cavity is formed in the top of the tower body (1);
a plurality of bathing partition plates (7) are arranged in the bathing cavity, a first pressure one-way valve (8) and a second pressure one-way valve (9) are respectively arranged at two ends of each bathing partition plate (7), the first pressure one-way valves (8) and the second pressure one-way valves (9) on two adjacent bathing partition plates (7) are staggered, the first pressure one-way valves (8) and the second pressure one-way valves (9) are opposite in opening direction, and the second pressure one-way valve (9) which flows from top to bottom and is arranged on the bathing partition plate (7) at the bottom is far away from one end of the secondary gas inlet (11); the opening pressure of the second pressure one-way valve (9) is smaller than the opening pressure of the first pressure one-way valve (8); secondary gas-generating bath liquid is arranged in the bath cavity;
a buffer assembly (17) is arranged in the buffer cavity, the buffer assembly (17) comprises a spiral pipe arranged in the buffer cavity, the peripheral end part of the spiral pipe is communicated with a bathing air outlet arranged on the first partition body (2), a communicating pipe is arranged at the center of the spiral pipe, and the communicating pipe passes through the second partition body (18) and is communicated with the oxidation cavity;
an oxidation assembly (3) for oxidizing the secondary gas after bathing is arranged in the oxidation cavity, and the oxidized secondary gas enters the gathering cavity through a plurality of vent holes (19) in the third partition body (4);
the gathering cavity is communicated with the spraying cavity through a fourth partition body (5), a spraying pipe assembly (14) is arranged in the spraying cavity, two ends of the spraying pipe assembly (14) are respectively and rotatably connected with the inner wall of the tower body (1), a water inlet at one end of the spraying pipe assembly is rotatably connected with a water inlet pipeline (10), the end part of the water inlet pipeline (10) extends to the bottom of the tower body (1) to be communicated with the bathing cavity, and the end part connected with the water inlet pipeline (10) of the bathing cavity is positioned at the lower part of the bathing partition plate (7) at the lowest part and is positioned at one end of a second pressure one-way valve (9); a water outlet pipeline (12) is arranged on the tower body (1) at the bottom of the spraying cavity, and the end part of the water outlet pipeline (12) extends to the bottom of the tower body (1) and is communicated with a cavity above the bath clapboard (7) at the uppermost layer in the bath cavity; a water suction pump (15) is arranged on the water inlet pipeline (10), and a first control valve (16) is arranged on the water outlet pipeline (12);
the spraying cavity is communicated with the drying cavity through an inclined vent hole (21) formed in the fifth partition body (6), and a drying assembly (20) is arranged in the drying cavity.
2. The device for desulfurizing and purifying the secondary gas in the fire flooding oil recovery as recited in claim 1, wherein the oxidation module (3) comprises a plurality of concentrically arranged oxidation cylinders (301), oxidation fillers (302) are filled between the plurality of concentrically arranged oxidation cylinders (301), cavities formed between the plurality of oxidation cylinders (301) are communicated through a thermal communication module (303) arranged on the oxidation cylinders (301), the bottom of the innermost oxidation cylinder (301) in the plurality of oxidation cylinders (301) is communicated with the buffer module (17), and a plurality of annular cavities formed by the plurality of oxidation cylinders (301) are respectively communicated with the gathering cavity through a plurality of vent holes (19) arranged on the third partition (4); when the secondary gas entering the oxidation cylinder body (301) at the innermost layer and the oxidation filling material (302) have oxidation reaction, when the generated heat is excessive, the thermal communication component (303) is opened, and the secondary gas in the oxidation cylinder body (301) at the innermost layer enters the annular cavity at the periphery of the oxidation cylinder body (301) at the innermost layer through the thermal communication component (303).
3. The secondary gas desulfurization and purification device in the fire flooding oil recovery as recited in claim 2, characterized in that said thermal communication component (303) comprises a connection cylinder (3031) embedded on the inner wall of the oxidation cylinder (301), a heat conductor (3035) for sealing the channel in the connection cylinder (3031) is arranged in the connection cylinder (3031), and a thermal expansion and contraction body (3036) is arranged in the heat conductor (3035);
a connecting channel (3032) parallel to the central line of the connecting cylinder body (3031) is arranged in the connecting cylinder body (3031), one end of the connecting channel (3032) is communicated with the inner channel of the connecting cylinder body (3031) through an oxidation air inlet (3033), and the other end of the connecting channel (3032) extends to the rear end of the heat conductor (3035) and is communicated with the inner channel of the connecting cylinder body (3031) through an oxidation air outlet (3034);
a lever (3039) is arranged in the connecting channel (3032), one end of the lever (3039) close to the oxidation air outlet (3034) is movably connected with a fulcrum (30310) arranged in the connecting channel (3032), the end part of the lever (3039) is hinged with a connecting rod (3038) through a hinge part (3031), and the connecting rod (3038) is fixedly connected with a plugging piston (3037) arranged in the oxidation air inlet (3033);
the end part of the thermal expansion and contraction body (3036) is fixedly connected with a push rod (30311), and the end part of the push rod (30311) enters the connecting channel (3032) to be hinged with the lever (3039); when the thermal expansion and contraction body (3036) expands, the push rod (30311) pushes one end of the lever (3039) to move upwards, the other end of the lever drives the blocking piston (3037) to move downwards, the blocking piston (3037) leaves the oxidation air inlet (3033), the inner channel of the connecting cylinder body (3031) is communicated with the connecting channel (3032) through the oxidation air inlet (3033), the annular cavities at the two ends of the connecting cylinder body (3031) are communicated, and secondary gas for oxidation enters the outer annular cavity to be oxidized with the oxidation filling material (302).
4. A device for desulfurizing and purifying secondary gas in fire flooding oil recovery as claimed in claim 3, characterized in that the diameter of the end of said oxidizing gas inlet (3033) near the inner passage of the connecting cylinder (3031) is larger than the diameter of the end near the connecting passage (3032).
5. The secondary gas desulfurization and purification device in fire flooding oil recovery as recited in claim 1, characterized in that said fourth partition (5) comprises a partition body (501), the end surface of said partition body (501) located in the gathering cavity is a circular arc groove surface (502), the end surface located in the spraying cavity is a convex surface (503) with two ends extending downwards, and the middle part of said partition body (501) is provided with a gas channel (504) communicating the gathering cavity and the spraying cavity; a shielding top cover (505) is arranged in the spraying cavity, the shielding top cover (505) is fixedly connected with the top of the partition body (501) through a support (506), and the shielding top cover (505) is positioned right above the gas channel (504).
6. The device for desulfurizing and purifying secondary gas in fire flooding oil recovery as recited in claim 5, characterized in that the downward extending shading edges at both ends of said shading top cover (505) are parallel to the downward extending plane of the convex surface (503) at the upper part of the partition body (501).
7. The secondary gas desulfurization and purification device in fire flooding oil recovery as recited in claim 1, characterized in that said shower assembly (14) comprises a shower (1401) movably connected to the tower (1), the shower (1401) is provided with a plurality of annularly arranged nozzle groups, each annularly arranged nozzle group is a plurality of annularly arranged nozzles (1402), the nozzles (1403) of the plurality of nozzles (1402) are located on the same side, and the direction of water flow ejected from each nozzle (1402) is tangential to the circular ring formed by the nozzles (1402).
8. The device for desulfurizing and purifying secondary gas in fire flooding oil recovery as claimed in claim 1, wherein a spray liquid box (22) is provided at one side of the tower body (1), one end of the spray liquid box (22) is connected to the water outlet pipeline (12) through a water outlet connecting pipeline (23), the upper end of the spray liquid box (22) is connected to the water outlet pipeline (12) through a water inlet connecting pipeline (25), the first control valve (16) is located at the middle of the connection node of the water outlet connecting pipeline (23) and the water inlet connecting pipeline (25) to the water outlet pipeline (12), and the water outlet connecting pipeline (23) is provided with a second control valve (24).
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| CN202110368951.4A CN113025403B (en) | 2021-04-06 | 2021-04-06 | Secondary gas desulfurization purification device in fireflood oil recovery |
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| CN113025403B (en) | 2021-08-17 |
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