A skid-mounted device for distillation and separation unit of petroleum associated gas

Abstract

The present invention discloses a skid-mounted device for a petroleum associated gas distillation and separation unit, comprising a gas-liquid diversion structure, wherein the gas-liquid diversion structure is installed inside a purification and collection structure, and a distillation separation and dehydration structure is provided at the lower part of the purification and collection structure, wherein the gas-liquid diversion structure comprises a mounting frame with a hollow structure inside, and an air inlet pipe is installed through one side of the mounting frame, and a cavity block with an atomizing nozzle is inlaid and installed at the other end of the air inlet pipe, a lower liquid hopper is inlaid and installed through the lower part of the mounting frame, and an exhaust box is fixed at the upper part of the mounting frame, and a collision block is fixed between the lower liquid hopper and the exhaust box, a partition is fixed at the rear side of the collision block for facilitating the fixed installation of a first negative pressure machine, and the first negative pressure machine is inlaid and installed with one side of a first purification box through a connecting pipe, and the skid-mounted device for a petroleum associated gas distillation and separation unit plays an atomizing spraying role through the arranged atomizing nozzle.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum associated gas, in particular to a skid-mounted device for a petroleum associated gas distillation separation unit. Background Art

[0002] Associated gas is the associated gas of oil field petroleum, which is the volatile part of crude oil. It is a petroleum-based combustible gas and a high-quality fuel and chemical raw material. It mainly comes from oil well casing, gas-liquid separation at sites, volatilization of oil tanks and crude oil stabilization, etc. Associated gas has high economic value. After the associated gas is processed, the recoverable economic products are: LPG (liquefied petroleum gas), NGL (stable light hydrocarbons or mixed hydrocarbons) and dry gas (natural gas without light hydrocarbons). In addition to being used as fuel gas for duty points, heating furnaces, heat transfer oil and generators, the remaining dry gas can be used to produce CNG (compressed natural gas) and LNG (liquefied natural gas). When the gas volume is large, a gas pipeline can also be built for export. Since the associated gas is dispersed and the volume is small, the processing process is complex and the investment is high, most of them are treated directly or by combustion and emission, which not only pollutes the environment, but also wastes resources. At the same time, there are safety hazards, which are inconsistent with the global concept of energy conservation, emission reduction, low-carbon economy and green development. Summary of the invention

[0003] The purpose of the present invention is to address the shortcomings of the prior art and provide a skid-mounted device for a petroleum associated gas distillation separation unit to solve the problem that most of the above-mentioned background technologies adopt direct or combustion emission treatment methods, which not only pollutes the environment, but also wastes resources and poses safety hazards, which is inconsistent with the global concepts of energy conservation, emission reduction, low-carbon economy and green development.

[0004] To achieve the above object, the present invention provides the following technical solutions: a skid-mounted device for a petroleum associated gas distillation separation unit, comprising a gas-liquid diversion structure, the gas-liquid diversion structure being installed inside a purification and collection structure, and a distillation separation and dehydration structure being provided below the purification and collection structure;

[0005] The gas-liquid flow separation structure includes a mounting frame with a hollow structure inside, and an air inlet pipe is installed through one side of the mounting frame, and a cavity block with an atomizing nozzle is embedded and installed at the other end of the air inlet pipe;

[0006] A lower liquid hopper is embedded and installed at the lower part of the installation frame, and an exhaust box is fixed at the upper part of the installation frame. A collision block is fixed between the lower liquid hopper and the exhaust box.

[0007] By adopting the above technical solution, atomization spraying is achieved through the provided atomization nozzle.

[0008] Preferably, a partition is fixed to the rear side of the collision block to facilitate the fixed installation of the first negative pressure machine, and the first negative pressure machine is embedded and installed with one side of the first purification box through a connecting pipe, and the other end of the first purification box is embedded and installed with one end of the U-shaped tube, and the U-shaped tube is fixed to the rear side of the collision block through a condensation plate, and the other end of the U-shaped tube is embedded and installed with the branch return pipe.

[0009] By adopting the above technical solution, the collision block is provided to separate the collision liquid and gas.

[0010] Preferably, an installation groove is provided at the lower part of the installation frame for facilitating the placement of the branch return pipe, and a liquid outlet valve pipe is inlaid and installed at the rear side of the installation groove.

[0011] By adopting the above technical solution, the condensed water is discharged through the provided liquid outlet valve pipe.

[0012] Preferably, the purification and collection structure includes a connecting box with a hollow internal structure, and a second negative compressor is fixed on the upper part of the connecting box. At the same time, one end of the second negative compressor is embedded and connected with a hollow frame with a desiccant and a purification core inside, and an air outlet hopper is embedded and fixed on one side of the hollow frame, and the hollow frame is fixed on the upper part of the connecting box.

[0013] By adopting the above technical solution, the gas outlet hopper is provided to facilitate the emission and collection of gases such as carbon dioxide.

[0014] Preferably, a connecting pipe is fixed at the lower part of the connection box, and one end of the connecting pipe is embedded and connected with the collecting tank, and a liquid outlet valve is embedded and installed right in front of the collecting tank.

[0015] By adopting the above technical solution, the hydrocarbon substances are condensed and collected by the provided collection tank.

[0016] Preferably, the distillation separation and dehydration structure includes a distillation box which also has a hollow structure inside, and a fixed plate with concave holes is fixed inside the distillation box, and slide grooves are opened on both sides of the bottom of the distillation box, and an adjustment plate for sliding adjustment with the slide groove is provided inside the distillation box, and a hollow tube with a hollow structure inside is embedded and fixed on the adjustment plate, and liquid flow holes are opened on the surface of the hollow tube.

[0017] By adopting the above technical solution, the hollow tube is provided to achieve opening and lifting adjustment.

[0018] Preferably, a matching block matched with the concave hole is fixed on the hollow tube, adjusting cylinders for driving and adjusting the adjusting plate are fixed on both sides of the distillation box, a heating tube is embedded and fixed on the surface of the distillation box, and a branch oil suction pipe is embedded and fixed inside the distillation box.

[0019] By adopting the above technical solution, the drive adjustment is controlled by the arranged adjustment cylinder.

[0020] Preferably, the distillation box is fixed at the lower part of the connecting box, and the upper part of the distillation box is inlaid and connected with the lower liquid hopper, and at the same time, a water outlet valve pipe is inlaid and installed at the bottom of the distillation box through the connecting box.

[0021] By adopting the above technical solution, the water outlet valve pipe is provided to achieve distillation, dehydration and discharge.

[0022] Preferably, the other end of the mounting connecting pipe is mounted and connected to the bottom of the branch return pipe, and the other end of the branch return pipe is mounted and connected to the other end of the second negative pressure machine.

[0023] By adopting the above technical solution, the branch reflux pipe is set to achieve gas and liquid diversion and transportation.

[0024] Compared with the prior art, the invention has the following beneficial effects: the petroleum associated gas distillation separation unit skid-mounted device,

[0025] (1) This case sets up a gas-liquid diversion structure to solve the existing problem of direct or combustion emission, which not only pollutes the environment, but also wastes resources and poses safety hazards. It is inconsistent with the global concept of energy conservation, emission reduction, low-carbon economy and green development. The oil-associated gas is transported to the atomizing nozzle at high pressure through the air inlet pipe for atomization and spraying to collide with the collision block. At this time, the atomized gas particles and liquid are affected by their own weight and the liquid particles flow along the collision block to the lower liquid bucket for collection. At the same time, when the liquid particles are collected in the lower liquid bucket, the water particles also follow the oil particles into the lower liquid bucket for collection. At this time, the gas and particles are discharged through the exhaust box to the first purification box for preliminary purification of hydrogen sulfide harmful substances;

[0026] (2) The first purification box, U-shaped tube, condensation plate and branch reflux pipe are arranged in the gas-liquid diversion structure, so as to effectively extract the hydrocarbon substances contained in the gas for condensation and collection. When the gas is transported inside the U-shaped tube, the condensation plate performs condensation work. During the operation of the condensation plate, the hydrocarbon substances in the gas transported inside the U-shaped tube are condensed, and the condensed hydrocarbon substances form condensate and are transported to the collection tank through the branch reflux pipe for collection. At the same time, the gas after the hydrocarbon substances are removed is transported again through the branch reflux pipe to the purification and collection structure to purify and collect the remaining gas;

[0027] (3) By setting up: a purification and collection structure, the condensed gas is effectively dried and purified for a second time. When the condensed gas is transported to the inside of the connection box, the gas passes through the desiccant and the purification core to purify the hydrogen sulfide gas, and after the hydrogen sulfide is purified, the remaining carbon dioxide, nitrogen and helium gases are dried and collected for further separation;

[0028] (4) By setting up: a distillation separation and dehydration structure, the problem of a large amount of water in the crude oil is solved. When the crude oil and water enter the distillation box together, the crude oil and water are precipitated. At this time, due to the different densities of crude oil and water, when the water is below the crude oil, the operator controls the adjustment cylinder to work. The adjustment cylinder drives the adjustment plate to move during the operation. During the movement of the adjustment plate, the hollow tube extends into the water. At this time, the water below the crude oil is transported to the inside of the water outlet valve pipe through the flow hole and discharged. After the water below the crude oil is discharged, due to the high density of the crude oil, the crude oil cannot be discharged through the flow hole. After that, the adjustment cylinder drives the hollow tube to move downward to block the concave hole through the matching block. Then, the heating tube is controlled to work. During the operation of the heating tube, the crude oil inside the distillation box is distilled and dehydrated. After the crude oil is distilled and dehydrated, the oil and water are separated again. When the oil and water are separated again, the above steps are repeated to discharge the water. Then, the branch oil suction pipe is used to discharge and collect the distilled crude oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the installation frame, air inlet pipe, cavity block, atomizing nozzle, lower liquid bucket, exhaust box, collision block, first negative pressure machine, connecting pipe, first purification box, U-shaped pipe, condensation plate and branch return pipe of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the installation frame, installation slot and liquid outlet valve pipe of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the connection box, the second negative pressure machine, the hollow frame, the installation connection pipe and the collection tank of the present invention;

[0033] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0034] Figure 6 It is a schematic diagram of the structure of the distillation box, the fixing plate, the adjusting plate, the hollow tube, the liquid flow hole, the adjusting cylinder, the heating tube, the branch oil suction tube and the water outlet valve tube of the present invention;

[0035] Figure 7 This is a schematic diagram of the distillation box and chute structure of the present invention;

[0036] Figure 8 It is a schematic diagram of the fixing plate and the concave hole structure of the present invention;

[0037] Fig. 9 It is a schematic diagram of the structure of the hollow tube, liquid flow hole and matching block of the present invention.

[0038] In the figure: 1. gas-liquid diversion structure; 101. mounting frame; 102. air inlet pipe; 103. cavity block; 104. atomizing nozzle; 105. lower liquid bucket; 106. exhaust box; 107. collision block; 108. first negative pressure machine; 109. connecting pipe; 1010. first purification box; 1011. U-shaped pipe; 1012. condensation plate; 1013. branch return pipe; 1014. mounting groove; 1015. liquid outlet valve pipe; 2. purification collection structure; 201. connecting box; 202. The second negative pressure machine; 203, desiccant; 204, purification core; 205, hollow frame; 206, air outlet hopper; 207, installation connecting pipe; 208, collecting tank; 3, distillation separation and dehydration structure; 301, distillation box; 302, fixing plate; 303, concave hole; 304, slide groove; 305, adjustment plate; 306, hollow tube; 307, liquid flow hole; 308, matching block; 309, adjustment cylinder; 3010, heating tube; 3011, branch oil suction pipe; 3012, water outlet valve pipe. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-9 The present invention provides a technical solution: a skid-mounted device for a petroleum associated gas distillation separation unit, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a gas-liquid diversion structure 1, which includes an installation frame 101 with a hollow structure inside, and an air inlet pipe 102 is installed through one side of the installation frame 101, and a cavity block 103 with an atomizing nozzle 104 is embedded and installed at the other end of the air inlet pipe 102, a lower liquid bucket 105 is embedded and installed at the lower part of the installation frame 101, and an exhaust box 106 is fixed at the upper part of the installation frame 101, and a collision block 107 is fixed between the lower liquid bucket 105 and the exhaust box 106, wherein the collision block 107 is made of stainless steel material. When the collision block 107 is installed using stainless steel material, it can not only avoid the adhesion of liquefied particles and vaporized particles to the collision block 107.

[0041] The above scheme further has a partition fixed on the rear side of the collision block 107 for facilitating the fixed installation of the first negative pressure machine 108, and the first negative pressure machine 108 is embedded and installed with one side of the first purification box 1010 through a connecting pipe 109, and the other end of the first purification box 1010 is embedded and installed with one end of the U-shaped tube 1011, the U-shaped tube 1011 is fixed to the rear side of the collision block 107 through a condensation plate 1012, and the other end of the U-shaped tube 1011 is embedded and installed with a branch return pipe 1013, wherein a refrigeration compressor installed and connected to the condensation plate 1012 is installed above the installation frame 101, and the U-shaped tube 1011 is gradually cooled by using the set refrigeration compressor and the condensation plate 1012, and the hydrocarbon substances in the atomized gas are effectively extracted and condensed and collected when the U-shaped tube 1011 is cooled.

[0042] Furthermore, in the above solution, a mounting groove 1014 is provided at the lower part of the mounting frame 101 for facilitating the placement of the branch return pipe 1013 , and a liquid outlet valve pipe 1015 is embedded and installed at the rear side of the mounting groove 1014 .

[0043] In the above scheme, the petroleum-associated gas is transported to the interior of the atomizing nozzle 104 at high pressure through the air inlet pipe 102 for atomization and spraying to collide with the collision block 107. At this time, the atomized gas particles and liquid are affected by their own weight and the liquid particles flow along the collision block 107 to be collected in the lower liquid bucket 105. At the same time, when the liquid particles are collected in the lower liquid bucket 105, the water particles also follow the oil particles into the lower liquid bucket 105 for collection. At this time, the gas and particles are discharged through the exhaust box 106 to the first purification box 1010 for preliminary purification of hydrogen sulfide harmful substances.

[0044] like Figure 4 and Figure 5 As shown, the gas-liquid diversion structure 1 is installed inside the purification collection structure 2, and the purification collection structure 2 includes a connection box 201 with a hollow structure inside, and a second negative pressure machine 202 is fixed on the upper part of the connection box 201. At the same time, one end of the second negative pressure machine 202 is embedded and connected with a hollow frame 205 with a desiccant 203 and a purification core 204 inside. An air outlet hopper 206 is embedded and fixed on one side of the hollow frame 205, and the hollow frame 205 is fixed on the upper part of the connection box 201, and the lower part of the connection box 201 is fixed. A connecting pipe 207 is installed, and one end of the connecting pipe 207 is embedded and connected with the collecting tank 208. At the same time, a liquid outlet valve is embedded and installed in front of the collecting tank 208. The other end of the connecting pipe 207 is installed and connected to the bottom of the branch return pipe 1013, and the other end of the branch return pipe 1013 is installed and connected to the other end of the second negative compressor 202. The desiccant 203 and the purification core 204 respectively use a desiccant and an activated carbon filter core to purify the gas and the hydrogen sulfide gas in the gas.

[0045] In the above scheme, when the condensed gas is transported to the inside of the connection box 201, the gas passes through the desiccant 203 and the purification core 204 to purify the hydrogen sulfide gas, and after the hydrogen sulfide is purified, the remaining carbon dioxide, nitrogen and helium gases are dried and collected and separated again, and the condensed water on the condensation plate 1012 is discharged from the inside of the installation frame 101 through the installation groove 1014 and the liquid outlet valve pipe 1015.

[0046] like Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, a distillation separation and dehydration structure 3 is provided at the lower part of the purification and collection structure 2, and the distillation separation and dehydration structure 3 includes a distillation box 301 which is also hollow in structure, and a fixed plate 302 with a concave hole 303 is fixed in the distillation box 301, and slide grooves 304 are penetrated on both sides of the lower part of the distillation box 301, and an adjustment plate 305 which slides and adjusts with the slide groove 304 is provided in the distillation box 301, and a hollow tube 306 which is hollow in structure is embedded and fixed on the adjustment plate 305, and a liquid flow hole 307 is penetrated on the surface of the hollow tube 306, wherein the liquid flow hole 307 has a diameter of 0.05 mm, and the liquid flow hole 307 with a smaller diameter is used to effectively discharge and isolate water and crude oil.

[0047] Furthermore, in the above scheme, a matching block 308 which is installed in conjunction with the recessed hole 303 is fixed on the hollow tube 306, and adjusting cylinders 309 which drive and adjust the adjusting plate 305 are fixed on both sides of the distillation box 301, and a heating tube 3010 is embedded and fixed on the surface of the distillation box 301, and a branch oil suction pipe 3011 is embedded and fixed inside the distillation box 301, wherein the above components constitute a lifting and adjusting structure, and the oil and water can be effectively discharged and separated by utilizing the lifting and adjusting structure constituted by the above components.

[0048] In the above scheme, the distillation box 301 is fixed at the lower part of the connecting box 201, and the upper part of the distillation box 301 is embedded and connected with the lower liquid hopper 105, and at the same time, the bottom of the distillation box 301 penetrates the connecting box 201 and is embedded with a water outlet valve pipe 3012.

[0049] In the above scheme, when crude oil and water enter the distillation box 301 together, the crude oil and water are precipitated. At this time, due to the different densities of crude oil and water, the water is below the crude oil. At this time, the operator controls the regulating cylinder 309 to work. The regulating cylinder 309 drives the regulating plate 305 to move during the working process. During the movement of the regulating plate 305, the hollow tube 306 is extended in the water. At this time, the water below the crude oil is transported to the inside of the water outlet valve pipe 3012 through the flow hole 307 for discharge. After the water below the crude oil is discharged, due to the high density of the crude oil, the crude oil cannot be discharged through the flow hole 307. After that, the regulating cylinder 309 drives the hollow tube 306 to move downward to block the concave hole 303 through the matching block 308. Then, the heating tube 3010 is controlled to work. During the working process of the heating tube 3010, the crude oil inside the distillation box 301 is distilled and dehydrated. After the crude oil is distilled and dehydrated, the oil and water are separated again. When the oil and water are separated again, the above steps are repeated to discharge the water. Then, the branch oil suction pipe 3011 is used to discharge and collect the distilled crude oil.

[0050] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A skid-mounted device for a petroleum associated gas distillation and separation unit, characterized in that: It comprises a gas-liquid splitting structure (1), wherein the gas-liquid splitting structure (1) is installed inside a purification and collection structure (2), and a distillation separation and dehydration structure (3) is provided below the inside of the purification and collection structure (2); The gas-liquid flow splitting structure (1) comprises a mounting frame (101) having a hollow structure inside, and an air intake pipe (102) is installed through one side of the mounting frame (101), and a cavity block (103) with an atomizing nozzle (104) is embedded and installed at the other end of the air intake pipe (102); A lower liquid hopper (105) is embedded and installed at the lower part of the installation frame (101), and an exhaust box (106) is fixed at the upper part of the installation frame (101), and a collision block (107) is fixed between the lower liquid hopper (105) and the exhaust box (106); A partition is fixed to the rear side of the collision block (107) for facilitating the fixed installation of the first negative pressure machine (108), and the first negative pressure machine (108) is connected to one side of the first purification box (1010) by means of a connecting pipe (109), and the other end of the first purification box (1010) is connected to one end of a U-shaped tube (1011) by means of a connecting pipe (109), and the U-shaped tube (1011) is fixed to the rear side of the collision block (107) by means of a condensation plate (1012), and the other end of the U-shaped tube (1011) is connected to the branch return pipe (1013) by means of a connecting pipe (109). An installation groove (1014) is provided at the lower part of the installation frame (101) for facilitating the placement of the branch return pipe (1013), and a liquid outlet valve pipe (1015) is inlaid and installed at the rear side of the installation groove (1014); The purification collection structure (2) comprises a connection box (201) having an internal hollow structure, and a second negative pressure machine (202) is fixed on the upper part of the connection box (201), and one end of the second negative pressure machine (202) is embedded and connected with a hollow frame (205) with a desiccant (203) and a purification core (204) inside, and an air outlet hopper (206) is embedded and fixed on one side of the hollow frame (205), and the hollow frame (205) is fixed on the upper part of the connection box (201); A connection pipe (207) is fixed at the lower part of the connection box (201), and one end of the connection pipe (207) is embedded and connected to the collection tank (208), while a liquid outlet valve is embedded and installed in front of the collection tank (208); The distillation separation and dehydration structure (3) comprises a distillation box (301) with a hollow structure inside, and a fixed plate (302) with a concave hole (303) is fixed inside the distillation box (301), and slide grooves (304) are provided on both sides of the bottom of the distillation box (301). An adjustment plate (305) is provided inside the distillation box (301) for sliding adjustment with the slide grooves (304), and a hollow tube (306) with a hollow structure inside is embedded and fixed on the adjustment plate (305), and a liquid flow hole (307) is provided on the surface of the hollow tube (306); A matching block (308) matched with the concave hole (303) is fixed on the hollow tube (306); an adjusting cylinder (309) for driving and adjusting the adjusting plate (305) is fixed on both sides of the distillation box (301); a heating pipe (3010) is embedded and fixed on the surface of the distillation box (301); and a branch oil suction pipe (3011) is embedded and fixed inside the distillation box (301); The distillation box (301) is fixed at the lower part of the connection box (201), and the upper part of the distillation box (301) is embedded and connected with the lower liquid hopper (105), and the bottom of the distillation box (301) penetrates the connection box (201) and is embedded with a water outlet valve pipe (3012); The other end of the mounting connection pipe (207) is mounted and connected to the bottom of the branch return pipe (1013), and the other end of the branch return pipe (1013) is mounted and connected to the other end of the second negative pressure machine (202).

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