Horizontal cyclone desanding separator adapting to severe working conditions

Abstract

The utility model discloses a horizontal cyclone desanding separator adapting to severe working conditions. The horizontal cyclone desanding separator comprises a barrel body part, a feeding barrel, a stacking barrel and an overflow plate, the feeding barrel is arranged on one side of the barrel body part, the stacking barrel is arranged in the barrel body part, the bottom of the feeding barrel is inserted into the stacking barrel, overflow plates of the stacking barrel are sequentially arranged in the length direction of the barrel body part, and a swirler and an air outlet barrel are arranged in the feeding barrel; according to the scheme, mixed materials enter the swirler through the feeding cylinder, the mixed materials can be accelerated in the process of passing through the swirler, centrifugal force is generated to separate gaseous substances from non-gaseous substances, the gaseous substance cylinder is discharged outwards through the gas outlet cylinder, and the non-gaseous substances sink into the stacking cylinder to be stacked. At least 90% of gaseous substances can be separated in a rotational flow centrifugal mode, while a traditional gravity separator can only separate 80% of gaseous substances at most, and by means of the scheme, the effective gaseous substances can be separated more efficiently.

Description

Technical Field

[0001] The utility model relates to the field of natural gas processing equipment, in particular to a horizontal cyclone sand removal separator adaptable to harsh working conditions. Background Art

[0002] In the development and production process of oil and gas fields, liquid and natural gas (liquid phase, i.e. condensate oil, natural gas condensate, produced gas, etc.; natural gas, mainly refers to natural gas, flash steam and condensate gas) separators are a common and indispensable separation equipment. Their main function is to separate the liquid phase and natural gas mixture for a series of subsequent treatments. According to different separation principles, oil and gas separators in oil and gas fields mostly adopt two forms: gravity separators and centrifugal separators. Among them, gravity separators are widely used, using the density difference between the separated liquid phase and natural gas to achieve separation under the action of gravity.

[0003] The traditional gravity separator in the prior art is a horizontal separator, which must have a sufficient diameter and horizontal length to achieve good separation. The separation accuracy is not high, and small particle droplets and sand particles will be brought into the downstream device; in the traditional desander, the air inlet enters the gas, liquid, and solid three-phase medium, and the three-phase medium flows together toward the outlet of the horizontal three-phase separator by utilizing the different densities of each medium. The density difference between the gas phase, small droplets and sand particles is mainly utilized. Under the combined action of gravity, buoyancy and friction in the gas phase on the liquid and solid, the droplets and sand particles in the gas phase will be separated from the liquid and solid phases in the gas phase before reaching the outlet position of the horizontal desander separator if the movement direction is downward. Otherwise, they will flow out of the separator together with the gas phase and cannot be separated.

[0004] The advantages of traditional gravity desanders are: simple equipment structure, separate gas discharge, sand and liquid discharge, large operation flexibility; no sand removal, reduced work intensity; liquid level can achieve automatic discharge;

[0005] However, its disadvantages are also obvious: the sand and liquid cannot be discharged independently; the separation accuracy is low; the equipment diameter is larger and longer; solid matter is easily accumulated in the equipment; there are many nickel-based alloys, the investment is higher, and ordinary carbon steel or low-alloy steel is used, the service life is short, and even safety accidents such as corrosion perforation and puncture leakage may occur under extremely harsh working conditions; at the same time, the sand discharge port is easy to be blocked, and cleaning is troublesome. Utility Model Content

[0006] The purpose of the utility model is to provide a horizontal cyclone sand removal separator that is suitable for harsh working conditions in view of the above-mentioned shortcomings, and solves the problems that the sand and liquid of the existing gravity sand removal device cannot be discharged independently; the separation accuracy is low; the equipment has a larger and longer diameter; solids are easily accumulated in the equipment; ordinary carbon steel or low alloy steel is used, the service life is short, and even safety accidents such as corrosion perforation and puncture leakage may occur under extremely harsh working conditions; at the same time, the sand discharge port is easily blocked and the cleaning is troublesome.

[0007] The utility model is realized by the following scheme:

[0008] A horizontal cyclone sand removal separator adaptable to harsh working conditions, at least including but not limited to a barrel portion, a feed barrel, a stacking barrel and an overflow plate; the feed barrel is arranged on one side of the barrel portion, the stacking barrel is arranged in the barrel portion, the bottom of the feed barrel is inserted into the stacking barrel, the stacking barrel overflow plates are arranged in sequence along the length direction of the barrel portion, and a cyclone and an air outlet barrel are arranged in the feed barrel.

[0009] Based on the above-mentioned structure of a horizontal cyclone sand removal separator that adapts to harsh working conditions, the feed cylinder includes a feed pipe, an air collecting cylinder and an air guide cylinder; the air collecting cylinder is connected to the air guide cylinder, and the air guide cylinder is connected to the air outlet cylinder; a first cavity is arranged between the air collecting cylinder and the side wall of the feed cylinder, the cyclone is arranged in the first cavity, and a second cavity is arranged between the air guide cylinder and the side wall of the feed cylinder; the feed pipe is connected to the second cavity.

[0010] Based on the above-mentioned structure of a horizontal cyclone sand removal separator adapted to harsh working conditions, the cyclone as a whole is a sheet-like spiral structure spiraled on the outer wall of the gas collecting cylinder, a flow channel is formed between adjacent spiral sheets, and the gas outlet cylinder is connected to the top position of the feed cylinder through a flange.

[0011] Based on the above-mentioned structure of a horizontal cyclone sand removal separator that adapts to harsh working conditions, the bottom of the feed barrel passes through the side wall of the barrel and extends into the stacking barrel. The bottom of the feed barrel is a funnel-shaped structure as a whole. The bottom of the funnel-shaped structure is opened, and a slow-flow rack is provided at the bottom of the feed barrel.

[0012] Based on the above-mentioned structure of a horizontal cyclone sand removal separator adapted to harsh working conditions, the slow flow frame includes a baffle and a support plate, the baffle is arranged perpendicular to the bottom opening direction, and the support plate is arranged between the bottom position of the feed barrel and the baffle.

[0013] Based on the above-mentioned structure of a horizontal cyclone sand removal separator that adapts to harsh working conditions, the stacking barrel includes a first discharge pipe and a stacking body. The stacking body as a whole is a funnel-shaped structure with one end open. The first discharge pipe is connected to the bottom position of the stacking body. The horizontal plane where the bottom outlet position of the feed barrel is located is lower than the horizontal plane where the top opening position of the stacking body is located, so that the bottom of the feed barrel is inserted into the stacking body for a distance.

[0014] Based on the above-mentioned structure of a horizontal cyclone sand removal separator that adapts to harsh working conditions, the overflow plate divides the internal cavity of the cylinder into a first liquid storage cavity and a second liquid storage cavity; the first liquid storage cavity is provided with a first liquid outlet pipe, a flushing pipe, an interface gauge and a first liquid level gauge; the second liquid storage cavity is provided with a second liquid level gauge and a second liquid outlet pipe; the height of the first liquid level gauge and the height position of the second liquid level gauge are set to the same, and the interface gauge is set at the side of the first liquid level gauge; the flushing pipe includes a flushing vertical pipe and a flushing horizontal pipe, the flushing vertical pipe is connected to the flushing horizontal pipe, the flushing horizontal pipe covers at least one-third of the length of the first liquid storage cavity, and the flushing vertical pipe lifts the flushing horizontal pipe to a predetermined height.

[0015] Based on the structure of the horizontal cyclone sand removal separator adapted to harsh working conditions, the central axis of the air guide cylinder is collinear with the central axis of the air collecting cylinder, and the size of the air guide cylinder is not larger than that of the air collecting cylinder.

[0016] Based on the structure of the horizontal cyclone sand removal separator adapted to harsh working conditions, at least three support plates are provided along the circumferential direction of the baffle plate, and the support plates are sheet-like structures.

[0017] Based on the structure of the horizontal cyclone desanding separator adapted to harsh working conditions, the plate material of the cylinder body in contact with the medium is made of NS1402 corrosion-resistant alloy composite plate, and the implementation standard is: NB / T 47002.2. The large forgings of the feed barrel and the stacking barrel are made of surfacing NS3306 corrosion-resistant alloy, and the nickel-based alloy seamless steel pipe in contact with the medium and the inner casing of the small forgings are made of NS1402 seamless steel pipe.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] 1. In this scheme, the mixed material enters the cyclone through the feed barrel. The mixed material will be accelerated in the process of passing through the cyclone, generating centrifugal force to separate the gaseous substance and the non-gaseous substance. The gaseous substance is discharged outward through the outlet barrel, and the non-gaseous substance sinks into the stacking barrel for accumulation. Compared with the traditional method, the cyclonic centrifugal method can separate at least 90% of the gaseous substances, while the traditional gravity separator can only separate 80% of the gaseous substances at most. Through this scheme, the effective gas substances can be separated more efficiently.

[0020] 2. This horizontal cyclone desander can firstly realize high-precision separation and separate metering of gas, water and solid phases, and at the same time can separate more than 90% of sand and discharge it separately. Its main advantages are: high separation accuracy, more than 90%; gas, water and sand can be separated separately; strong corrosion resistance and sand flushing resistance; large operational flexibility, both large and small flow rates can be handled; no sand removal is required, reducing work intensity; liquid level can realize automatic drainage; overflowing sand can be flushed and discharged; and subsequent gathering and transportation systems are protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 for Figure 1 A-A cross-sectional structural diagram;

[0023] Figure 3 It is an enlarged structural diagram of the cylinder body of the utility model;

[0024] Markings in the figure: 1. Cylinder body; 2. Feed cylinder; 3. Stacking cylinder; 4. Overflow plate; 5. Cyclone; 6. Air outlet cylinder; 11. First liquid storage chamber; 12. Second liquid storage chamber; 13. First liquid outlet pipe; 14. Flushing pipe; 15. Level gauge; 16. First liquid level gauge; 17. Second liquid level gauge; 18. Second liquid outlet pipe; 19. Flushing vertical pipe; 110. Flushing horizontal pipe; 111. Inspection port; 112. Air guide pipe; 21. Feed pipe; 22. Gas collecting cylinder; 23. Air guide cylinder; 24. First cavity; 25. Second cavity; 26. Slow flow rack; 27. Baffle plate; 28. Support plate; 31. First discharge pipe; 32. Stacking body. DETAILED DESCRIPTION

[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0026] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0027] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a predetermined direction, be constructed and operated in a predetermined direction, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0029] Example 1

[0030] like Figure 1 to Figure 3 As shown, the utility model provides a technical solution:

[0031] A horizontal cyclone sand removal separator adapted to harsh working conditions, which at least includes but is not limited to a barrel portion 1, a feed barrel 2, a stacking barrel 3 and an overflow plate 4; the feed barrel 2 is arranged on one side of the barrel portion 1, the stacking barrel 3 is arranged in the barrel portion 1, the bottom of the feed barrel 2 is inserted into the stacking barrel 3, the overflow plates 4 of the stacking barrel 3 are arranged in sequence along the length direction of the barrel portion 1, and a cyclone 5 and an air outlet barrel 6 are arranged in the feed barrel 2.

[0032] Based on the above structure, the mixed material enters the cyclone 5 through the feed barrel 2. The mixed material will be accelerated in the process of passing through the cyclone 5, generating centrifugal force to separate the gaseous substance and the non-gaseous substance. The gaseous substance is discharged outward through the gas outlet barrel 6, and the non-gaseous substance sinks into the stacking barrel 3 for accumulation. Compared with the traditional method, the cyclonic centrifugal method can separate at least 90% of the gaseous substances, while the traditional gravity separator can only separate 80% of the gaseous substances at most. Through this solution, the effective gas substances can be separated more efficiently.

[0033] The specific experimental comparison is shown in Table 1 below:

[0034] Table 1 Comparison of gravity sedimentation and cyclone separation

[0035] type Force Capture particle size Gas speed (m / s) Sand removal efficiency Pressure Drop Applicable occasions Gravity Sedimentation gravity More than 50μm 1.5-2 60-80％ Very small Rough classification Cyclone separation Centrifugal force Greater than 5-10μm 20-30 80-98％ medium Secondary separation

[0036] As an example, the feed barrel 2 may include a feed pipe 21, a gas collecting barrel 22 and a gas guide barrel 23; the gas collecting barrel 22 is connected to the gas guide barrel 23, and the gas guide barrel 23 is connected to the gas outlet barrel 6; a first cavity 24 is provided between the gas collecting barrel 22 and the side wall of the feed barrel 2, the cyclone 5 is provided in the first cavity 24, and a second cavity 25 is provided between the gas guide barrel 23 and the side wall of the feed barrel 2; the feed pipe 21 is connected to the second cavity 25;

[0037] Based on the above structure, the mixed material enters the second cavity 25 through the feed pipe 21, and then rotates and centrifuges and falls through the cyclone 5. When the mixed medium leaves the cyclone 5, it still maintains a certain centrifugal speed. At this time, the liquid material and the solid material rotate and fall, and the gas material will be separated during its falling process, thereby entering the gas collecting cylinder 22 and finally entering the gas outlet cylinder 6 through the gas guide cylinder 23.

[0038] As an example, the central axis of the gas guide cylinder 23 is colinear with the central axis of the gas collecting cylinder 22 , and the size of the gas guide cylinder 23 is not larger than the size of the gas collecting cylinder 22 .

[0039] Based on the above structure, the size of the gas guide cylinder 23 is set to be smaller than the gas collecting cylinder 22. On the one hand, the volume of the second cavity 25 can be increased to increase the accommodating space for the mixed material. On the other hand, the size of the gas collection interval can be increased to improve the collection rate of the gas material.

[0040] As an example, the cyclone 5 is a sheet-shaped spiral structure spiraling on the outer wall of the gas collecting cylinder 22, and a flow channel is formed between adjacent spiral sheets. The gas outlet cylinder 6 is connected to the top position of the feed cylinder 2 through a flange;

[0041] The bottom of the feed barrel 2 passes through the side wall of the barrel 1 and extends into the stacking barrel 3. The bottom of the feed barrel 2 is a funnel-shaped structure as a whole. An opening is provided at the bottom of the funnel-shaped structure. A slow-flow rack 26 is provided at the bottom of the feed barrel 2.

[0042] The flow slowing frame 26 may include a baffle plate 27 and a support plate 28. The baffle plate 27 is arranged perpendicular to the bottom opening direction. The support plate 28 is arranged between the bottom position of the feed barrel 2 and the baffle plate 27. There are at least three support plates 28 along the circumferential direction of the baffle plate 27, and the support plate 28 is a sheet structure.

[0043] Based on the above structure, by setting the bottom of the feed barrel 2 as a funnel-shaped structure, the material can be gathered and guided. At the same time, a slow-flow rack 26 is set at the bottom to block the medium flow and slow down its overall speed, so as to prevent the material from flowing out from the bottom at an excessively high speed and affecting the stacking barrel 3. Setting the support plate 28 as a sheet structure can reduce the obstruction to the medium flow and make the overall medium flow rate faster.

[0044] As an example, the stacking barrel 3 may include a first discharge pipe 31 and a stacking body 32. The stacking body 32 is a funnel-shaped structure with one end open. The first discharge pipe 31 is connected to the bottom position of the stacking body 32. The horizontal plane where the bottom outlet position of the feed barrel 2 is located is lower than the horizontal plane where the top opening position of the stacking body 32 is located, so that the bottom of the feed barrel 2 is inserted into the stacking body 32 for a certain distance.

[0045] Based on the above structure, when the mixed medium flows from the feed barrel 2 into the stacking barrel 3, the solid medium and the liquid medium will accumulate in the stacking barrel 3, and at the same time the liquid medium will gradually penetrate the solid medium and gradually overflow out of the stacking body 32. At this time, the solid medium will be discharged by the first discharge barrel to achieve solid-liquid separation.

[0046] As an example, the overflow plate 4 divides the internal cavity of the cylinder 1 into a first liquid storage cavity 11 and a second liquid storage cavity 12; a first liquid outlet pipe 13, a flushing pipe 14, a level gauge 15 and a first liquid level gauge 16 are arranged in the first liquid storage cavity 11; a second liquid level gauge 17 and a second liquid outlet pipe 18 are arranged in the second liquid storage cavity 12;

[0047] The height of the first liquid level gauge 16 is set to be the same as the height position of the second liquid level gauge 17, and the interface gauge 15 is set at the side of the first liquid level gauge 16;

[0048] The flushing pipe 14 includes a flushing vertical pipe 19 and a flushing horizontal pipe 110. The flushing vertical pipe 19 is connected to the flushing horizontal pipe 110. The flushing horizontal pipe 110 covers at least one third of the length of the first liquid storage chamber 11. The flushing vertical pipe 19 lifts the flushing horizontal pipe 110 to a predetermined height.

[0049] Based on the above structure, after the liquid medium overflows from the stacking barrel 3, it enters the first liquid storage chamber 11. At this time, the liquid medium is a water-oil mixture. Since the density of oil is smaller than that of water, the oil body will be suspended above the water body, and there is an interface between the two. At this time, the interface meter 15 is used to detect the horizontal height of the interface, and the first liquid level meter 16 is used to detect the height of the entire water-oil mixture. When the interface meter 15 detects that the water-oil interface is lower than the height of the overflow plate 4, the valve of the first liquid storage pipe is closed to make the water-oil interface gradually rise, and the oil body will overflow through the overflow plate 4 to the second liquid storage chamber 12 for storage. The second liquid level meter 17 in the second liquid storage chamber 12 monitors the height position of the oil body. When it reaches the predetermined height position, the valve of the second liquid outlet pipe 18 is opened to discharge the oil body to achieve water-oil separation.

[0050] When the interface meter 15 does not detect the water-oil interface, the height position of the first liquid level meter 16 controls the opening and closing of the first liquid outlet pipe 13. When the first liquid level meter 16 detects that the water height position reaches the preset limit position, the valve of the first liquid outlet pipe 13 is opened to discharge the water out.

[0051] At the same time, since mud and sand may flow out into the first liquid storage chamber 11 when overflow occurs in the stacking barrel 3, in order to avoid excessive accumulation of mud and sand in the first liquid storage chamber 11, a flushing pipe 14 is used to intermittently flush the first liquid storage chamber 11 and discharge the mud and sand to ensure the overflow function of the first liquid storage chamber 11.

[0052] As an example, the cylinder 1 may also be provided with an inspection port 111 and an air duct 112, which are arranged at the top of the cylinder. The inspection port 111 allows operators to enter for inspection, and the air duct 112 prevents excessive internal air pressure.

[0053] As an example, the air outlet pipe 6 may also be connected to an air outlet pipeline and a venting pipeline; the air guide pipe 112 is connected to the air outlet pipeline, and the venting pipeline is connected to the air outlet pipe 6. A flow monitoring component may also be provided on the air outlet pipeline.

[0054] Based on the above structure, the gas flow generated by separation can be detected through the flow monitoring component, and the air guide tube 112 is connected to the air outlet pipeline, so that the pressure of the cylinder part 1 and the external environment can be balanced.

[0055] In this scheme, the plate material in contact with the medium is NS1402 corrosion-resistant alloy composite plate, and the implementation standard is: NB / T47002.2. The applicable medium of the composite layer is: resistance to oxide stress corrosion and oxidation-reduction composite medium corrosion.

[0056] The large forgings in contact with the medium are made of internal surfacing NS3306 corrosion-resistant alloy. Applicable media: resistance to oxidation-reduction composite media, resistance to seawater corrosion, crevice corrosion and high thermal strength, resistance to high temperature oxidation.

[0057] The inner casing of nickel-based alloy seamless steel pipes and small forgings that contact the medium is made of NS1402 seamless steel pipe. Applicable media: resistance to oxide stress corrosion and oxidation-reduction composite medium corrosion.

[0058] The design should also meet the requirements of the Technical Regulations for Design, Manufacturing, Inspection and Acceptance of Nickel-Based Alloy Composite Plate Equipment.

[0059] Nickel has good mechanical strength and ductility, is difficult to melt, and does not oxidize in the air. At room temperature, a dense oxide film is formed on the surface in humid air, which can prevent the main metal from further oxidation.

[0060] Adding nickel to steel can improve its mechanical strength. The nickel content of nickel-based alloy is greater than or equal to 50%.

[0061] Nickel-based alloys commonly used in the petrochemical industry include corrosion-resistant alloys and high-temperature alloys. When working in normal-temperature corrosive media, they are called corrosion-resistant alloys. When working at high temperatures above 600°C to resist high-temperature oxidation corrosion, they are called high-temperature alloys.

[0062] Corrosion-resistant alloys include: (Ni-Cu) alloy, (Ni-Cr) alloy, (Ni-Mo) alloy, and (Ni-Cr-Mo) alloy.

[0063] Ni-Cu alloy has better corrosion resistance than nickel in reducing media, and better corrosion resistance than copper in oxidizing media. It is the best material resistant to high-temperature fluorine gas, hydrogen fluoride and hydrofluoric acid in the absence of oxygen and oxidants (see metal corrosion).

[0064] Ni-Cr alloy is a nickel-based heat-resistant alloy; it is mainly used in oxidizing media. It is resistant to high-temperature oxidation and corrosion by gases containing sulfur and vanadium, and its corrosion resistance increases with the increase of chromium content. This type of alloy also has good resistance to hydroxide corrosion (such as NaOH, KOH) and stress corrosion.

[0065] Ni-Mo alloy is mainly used under the condition of reducing medium corrosion. It is the best alloy resistant to hydrochloric acid corrosion, but its corrosion resistance will decrease significantly in the presence of oxygen and oxidants.

[0066] Ni-Cr-Mo(W) alloy has the properties of the above-mentioned Ni-Cr alloy and Ni-Mo alloy. It is mainly used under oxidation-reduction mixed medium conditions. This type of alloy has good corrosion resistance in high-temperature hydrogen fluoride gas, in hydrochloric acid and hydrofluoric acid solutions containing oxygen and oxidants, and in wet chlorine gas at room temperature.

[0067] Ni-Cr-Mo-Cu alloy is resistant to both nitric acid and sulfuric acid corrosion, and also has good corrosion resistance in some oxidizing-reducing mixed acids.

[0068] These nickel-based corrosion-resistant alloys are mainly used to manufacture various corrosion-resistant environment parts in the petroleum, chemical, electric power and other industries.

[0069] The design implementation standards of this equipment are: JB / T 4756-2006 "Nickel and Nickel Alloy Pressure Vessels", GB / T150.1~150.4-2011 "Pressure Vessels", NB / T 47042-2014 "Horizontal Vessels".

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal cyclone sand removal separator adapted to harsh working conditions, characterized by: At least includes but is not limited to a barrel portion, a feed barrel, a stacking barrel and an overflow plate; the feed barrel is arranged on one side of the barrel portion, the stacking barrel is arranged in the barrel portion, the bottom of the feed barrel is inserted into the stacking barrel, the stacking barrel overflow plates are arranged in sequence along the length direction of the barrel portion, and a cyclone and an air outlet barrel are arranged in the feed barrel.

2. A horizontal cyclone desanding separator adapted to severe working conditions as claimed in claim 1, characterized in that: The feed cylinder includes a feed pipe, an air collecting cylinder and an air guiding cylinder; the air collecting cylinder is connected to the air guiding cylinder, and the air guiding cylinder is connected to the air outlet cylinder; a first cavity is arranged between the air collecting cylinder and the side wall of the feed cylinder, the cyclone is arranged in the first cavity, and a second cavity is arranged between the air guiding cylinder and the side wall of the feed cylinder; the feed pipe is connected to the second cavity.

3. A horizontal cyclone desanding separator adapted to severe working conditions as claimed in claim 2, characterized in that: The cyclone as a whole is a sheet-like spiral structure spiraling on the outer side wall of the gas collecting cylinder, and a flow channel is formed between adjacent spiral sheets. The gas outlet cylinder is connected to the top position of the feed cylinder through a flange.

4. A horizontal cyclone sand removal separator adapted to severe working conditions as claimed in claim 3, characterized in that: The bottom of the feed barrel passes through the side wall of the barrel and extends into the stacking barrel. The bottom of the feed barrel is a funnel-shaped structure as a whole. The bottom of the funnel-shaped structure is open, and a slow-flow rack is provided at the bottom of the feed barrel.

5. A horizontal cyclone sand removal separator adapted to severe working conditions as claimed in claim 4, characterized in that: The slow flow rack comprises a baffle plate and a support plate. The baffle plate is arranged perpendicular to the bottom opening direction, and the support plate is arranged between the bottom position of the feed barrel and the baffle plate.

6. A horizontal cyclone sand removal separator adapted to severe working conditions as claimed in claim 5, characterized in that: The stacking barrel includes a first discharge pipe and a stacking body. The stacking body is a funnel-shaped structure with one end open. The first discharge pipe is connected to the bottom of the stacking body. The horizontal plane where the bottom outlet position of the feed barrel is located is lower than the horizontal plane where the top opening position of the stacking body is located, so that the bottom of the feed barrel is inserted into the stacking body for a distance.

7. A horizontal cyclone sand removal separator adapted to severe working conditions as claimed in claim 6, characterized in that: The overflow plate divides the internal cavity of the cylinder into a first liquid storage cavity and a second liquid storage cavity; the first liquid storage cavity is provided with a first liquid outlet pipe, a flushing pipe, an interface gauge and a first liquid level gauge; the second liquid storage cavity is provided with a second liquid level gauge and a second liquid outlet pipe; the height of the first liquid level gauge is the same as the height position of the second liquid level gauge, and the interface gauge is arranged at the side of the first liquid level gauge; the flushing pipe includes a flushing vertical pipe and a flushing horizontal pipe, the flushing vertical pipe is connected to the flushing horizontal pipe, the flushing horizontal pipe covers at least one-third of the length of the first liquid storage cavity, and the flushing vertical pipe lifts the flushing horizontal pipe to a predetermined height.

8. A horizontal cyclone sand removal separator adapted to severe working conditions as claimed in claim 7, characterized in that: The central axis of the gas guide cylinder is collinear with the central axis of the gas collecting cylinder, and the size of the gas guide cylinder is not larger than that of the gas collecting cylinder.

9. A horizontal cyclone sand removal separator adapted to severe working conditions as claimed in claim 8, characterized in that: At least three support plates are arranged along the circumferential direction of the baffle plate, and the support plates are sheet-like structures.

10. A horizontal cyclone sand removal separator adapted to severe working conditions as claimed in claim 9, characterized in that: The plate material of the barrel that contacts the medium is NS1402 corrosion-resistant alloy composite plate, and the implementation standard is: NB / T47002.

2. The large forgings of the feed barrel and the stacking barrel are made of surfacing NS3306 corrosion-resistant alloy. The nickel-based alloy seamless steel pipe that contacts the medium and the inner sleeve of the small forgings are made of NS1402 seamless steel pipe.

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