Petrochemical storage tank oil gas recovery device

Abstract

The invention provides a petrochemical storage tank oil gas recovery device which comprises an adsorption and desorption tank body, an adsorbent assembly and a flow divider, a base in the adsorbent assembly is elastically and slidably assembled in the adsorption and desorption tank body, an adsorption cylinder is assembled in the base in a fixed-axis rotating mode, the adsorption cylinder is filled with an adsorbent, a plurality of lateral guide pipes are arranged on one side of the flow divider, and the lateral guide pipes are arranged on the other side of the flow divider. One end of the distribution assembly is communicated with a plurality of adsorption and desorption assemblies, a plurality of lateral guide pipes are arranged in the distribution assembly, the plurality of lateral guide pipes are independently communicated with a plurality of adsorption and desorption tank bodies, and one side of each adsorption and desorption tank body is provided with an opening and closing assembly for controlling opening and closing of an air inlet valve, an exhaust valve and a vacuum pipe valve. Oil gas with large concentration fluctuation can be circularly input into the multiple adsorption and desorption assemblies for adsorption treatment, and the adsorption and desorption states of the adsorption and desorption assemblies are automatically adjusted according to the saturation degree of an adsorbent in each adsorption and desorption assembly.

Description

Technical Field

[0001] The invention relates to the technical field of petrochemical industry, in particular to an oil and gas recovery device for a petrochemical storage tank. Background Art

[0002] The waste gas in the petrochemical tank area mainly comes from the material loading and unloading vehicles in the tank area and the large and small breathing valves of the tanks. The main components of the waste gas are C2-C8. Since most tank areas have a large number of tanks and a large storage capacity, and store a wide variety of goods, the amount of VOCs waste gas emitted each year is very large. If it is directly discharged without collection and treatment, it will cause serious air pollution and energy waste.

[0003] In actual production, the VOCs waste gas emitted from the petrochemical storage tank area is of high concentration and discontinuous emission. For the waste gas treatment in the petrochemical storage tank area, there are currently mainly activated carbon adsorption, absorption, condensation, membrane separation, TO (direct combustion), RTO (regenerative incineration) and RCO / CO (regenerative catalytic oxidation / catalytic oxidation) and other waste gas treatment technologies, which have been successfully applied to the waste gas treatment in the petrochemical storage tank area. However, with the continuous improvement of atmospheric emission standards, the emission of petrochemical oil and gas recovery has gradually increased from 25g / m³ to 60mg / m³.

[0004] The existing absorption method, condensation method and membrane separation method have low efficiency in removing organic matter and cannot meet the emission standards required by the regulations. Incomplete desorption of the adsorbent in the activated carbon adsorption method is not only prone to cumulative effects, resulting in a short service life, but also when treating oil and gas with large concentration changes, one end of the adsorbent enters an oversaturated state, which greatly reduces the adsorption efficiency. Therefore, the operator is required to observe the saturation state of the adsorbent at all times and manually switch the adsorption tank valve to allow it to enter the desorption process. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of an embodiment of the present invention is to provide an oil and gas recovery device for a petrochemical storage tank to solve the problems in the above-mentioned background technology.

[0006] In order to realize the above technical solution, the present invention provides the following technical solution: A petrochemical tank oil and gas recovery device, comprising an adsorption and desorption assembly, the adsorption and desorption assembly comprising an adsorption and desorption tank body, a guide column, an elastic member, an air inlet pipe, an exhaust pipe and a vacuum pipe, the adsorption and desorption tank body is fixedly provided with a guide column, the guide column is slidably sleeved with an elastic member, the two ends of the cavity of the adsorption and desorption tank body are respectively connected with the air inlet pipe and the exhaust pipe, and one side of the cavity of the adsorption and desorption tank body is also connected with a vacuum pipe; The adsorbent assembly comprises a base, a cavity, a shaft, an adsorption cylinder and an air hole. The base is slidably mounted on the guide column and movably abuts against the elastic member. A cavity is arranged in the middle of the base. The shaft is coaxially arranged with the cavity and fixedly connected with the base. One end of the adsorption cylinder is fixedly mounted on the shaft, and the other end of the adsorption cylinder is spaced from the cavity. A plurality of air holes are arranged on the surface of the adsorption cylinder. A flow diverter assembly, the flow diverter assembly comprising a flow diverter, an air guide pipe and a lateral guide pipe, the flow diverter is provided with an air guide pipe inside, and a plurality of lateral guide pipes are further provided on one side of the flow diverter, the air guide pipe is used to input the oil and gas to be recovered into the plurality of lateral guide pipes; A transmission assembly, the transmission assembly includes a transmission main arm, a sliding rod, an inclined wall member, a positioning column, a female buckle and a reset rod, one end of the transmission main arm passes through the adsorption and desorption tank body and is fixedly connected to the base, the other end of the transmission main arm is fixedly connected to the sliding rod, the positioning column is fixedly assembled on one side of the adsorption and desorption tank body, one end of the inclined wall member is rotatably connected to the positioning column, the other end of the inclined wall member is fixedly provided with a female buckle, one end of the reset rod is fixedly connected to the adsorption and desorption tank body, and the other end of the reset rod is slidably inserted on the inclined wall member; An opening and closing component, the opening and closing component includes an opening and closing member, a sub-buckle, a reset arm, a first driven shaft and a rocking plate. The opening and closing member is slidably arranged on one side of the adsorption and desorption tank body and movably abuts against the inclined wall member. A sub-buckle is fixedly arranged on one side of the opening and closing member, and the sub-buckle is movably buckled with one end of the mother buckle. One end of the reset arm is rotatably connected to the opening and closing member, and the other end of the reset arm is rotatably connected to the rocking plate. One end of the first driven shaft is fixedly assembled on the adsorption and desorption tank body, and the other end of the first driven shaft is fixedly connected to the rocking plate.

[0007] As a further solution of the present invention, the adsorption and desorption component also includes an intake valve, an exhaust valve and a vacuum tube valve. The intake valve is used to control the oil and gas transportation on one side of the intake pipe, the exhaust valve is used to control the oil and gas transportation on one side of the exhaust pipe, and the vacuum tube valve is used to control the oil and gas transportation on one side of the vacuum tube.

[0008] As a further solution of the present invention, the opening and closing of the intake valve, the exhaust valve and the vacuum tube valve are all linked to the opening and closing parts.

[0009] As a further solution of the present invention, the adsorbent assembly also includes a bracket, a roller, a tooth plate and a driving gear. The bracket is fixedly assembled on the bottom of the base, one end of the roller is rotatably set on the bracket, and the other end of the roller is rollingly connected with the outer diameter surface of the base, the tooth plate is fixedly set in the inner cavity of the adsorption and desorption tank body, and the driving gear is fixedly axially set on one side of the bracket, one end of the driving gear is meshed with the tooth plate, and the other end of the driving gear is transmission connected to the roller.

[0010] As a further solution of the present invention, the petrochemical storage tank oil and gas recovery device also includes a shallow cooling treatment component, which includes a shallow cooling condenser, a shallow cooling condensation tube and a main drainage pipe. A shallow cooling condensation tube is arranged inside the shallow cooling condenser, and one end of the cavity of the shallow cooling condenser is connected to the main drainage pipe, and the main drainage pipe is connected to the air guide pipe.

[0011] As a further solution of the present invention, the petrochemical storage tank oil and gas recovery device also includes a cryogenic treatment component, which includes a cryogenic condenser, a cryogenic condensation tube and a main reflux pipe. A cryogenic condensation tube is arranged inside the cryogenic condenser, and the cryogenic condensation tube is connected with the shallow reflux condensation tube. One end of the cavity of the cryogenic condenser is connected with the main reflux pipe, and the main reflux pipe is connected with the vacuum pipe.

[0012] As a further solution of the present invention, the diversion assembly also includes lateral air holes, a sliding tube, a spherical head and a diversion port. A plurality of lateral air holes are arranged at one end of the air guide tube, and the lateral air holes are coaxially arranged with the lateral guide tube. One end of the sliding tube is slidably assembled in the lateral air holes, and the other end of the sliding tube is slidably assembled in the lateral guide tube. A spherical head is arranged at the end of the sliding tube, and the spherical head matches the inner diameter of the air guide tube. A diversion port is also arranged at one end of the sliding tube, and the diversion ports on the plurality of sliding tubes are arranged in the same direction and are arranged toward the side of the main drainage tube.

[0013] As a further solution of the present invention, the diverter assembly also includes an oil pump tube, an oil pump head and a piston member. The oil pump tube is fixedly arranged at one end of the diverter, and one end of the oil pump tube is connected to the oil pump head. The piston member is slidably arranged in the oil pump tube, and the piston member is fixedly connected to the sliding tube.

[0014] As a further solution of the present invention, the opening and closing assembly also includes a second driven shaft, a ratchet and a beveled tooth plate. The second driven shaft is fixedly arranged on one side of the adsorption and desorption tank body, and the second driven shaft is fixedly equipped with a ratchet. One end of the beveled tooth plate is fixedly connected to the transmission main arm, and the other end of the beveled tooth plate is unidirectionally meshed with the ratchet.

[0015] As a further solution of the present invention, the opening and closing assembly also includes a hydraulic pump, a pump rod and a hydraulic pipe. The hydraulic pump is fixedly arranged on one side of the adsorption and desorption tank body, one end of the pump rod is fixedly connected to the opening and closing member, the other end of the pump rod is equipped with a piston and is slidably arranged in the hydraulic pump, one end of the hydraulic pipe is connected to the inner cavity of the hydraulic pump, and the other end of the hydraulic pipe is connected to the oil pump head.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects: The present invention connects a plurality of adsorption and desorption components at one end of the diversion component and provides an active adsorbent component inside the adsorption and desorption tank body, so that oil and gas with large concentration fluctuations can be circulated and input into the plurality of adsorption and desorption components for adsorption treatment, and the adsorption and desorption states can be automatically adjusted according to the saturation degree of the adsorbent in each group of adsorption and desorption components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of an oil and gas recovery device for a petrochemical storage tank provided in one embodiment of the present invention.

[0019] Figure 2 This is a schematic structural diagram of an oil and gas recovery device for a petrochemical storage tank provided in one embodiment of the present invention.

[0020] Figure 3 It is a schematic structural diagram of an adsorption and desorption component and an adsorbent component in an oil and gas recovery device for a petrochemical storage tank provided in an embodiment of the present invention.

[0021] Figure 4 for Figure 3 Schematic diagram of the enlarged portion of the marker A.

[0022] Figure 5 A schematic diagram of the partial structure of an oil and gas recovery device for a petrochemical storage tank provided in one embodiment of the present invention.

[0023] Figure 6 for Figure 5 Magnified schematic diagram of the appendage marker B.

[0024] Figure 7 The present invention is a schematic structural diagram of a vacuum tube and a vacuum tube valve in a petrochemical storage tank oil and gas recovery device provided in an embodiment of the present invention.

[0025] Figure 8 for Figure 7 Magnified schematic diagram of the appendage marker C.

[0026] Fig. 9 A partial cross-sectional view of a flow diversion assembly in an oil and gas recovery device for a petrochemical storage tank provided in one embodiment of the present invention.

[0027] Fig.10A back cross-sectional view of a flow diversion assembly in an oil and gas recovery device for a petrochemical storage tank provided in one embodiment of the present invention.

[0028] Figure numerals: 1-adsorption and desorption assembly, 101-adsorption and desorption tank, 102-guide column, 103-elastic member, 104-inlet pipe, 105-exhaust pipe, 106-inlet valve, 107-exhaust valve, 108-vacuum tube, 109-vacuum tube valve, 110-nitrogen valve tube, 2-adsorbent assembly, 201-base, 202-cavity, 203-axis column, 204-adsorption cylinder, 205-air hole, 206-bracket, 207-roller, 208-tooth plate, 209-driving gear, 3-shallow cold treatment assembly, 301-shallow cold condenser, 302-shallow cold condenser tube, 303-main drainage tube, 4-deep cold treatment assembly, 401-deep cold condenser, 402-deep cold condenser tube, 40 3-main return pipe, 5-diversion assembly, 501-diverter, 502-air guide pipe, 503-lateral air hole, 504-lateral guide pipe, 505-sliding pipe, 506-spherical head, 507-diversion port, 508-oil pump pipe, 509-oil pump head, 510-piston, 6-transmission assembly, 601-transmission main arm, 602-sliding rod, 603-inclined wall member, 604-positioning column, 605-female buckle, 606-reset rod, 7-opening and closing assembly, 701-opening and closing member, 702-sub-buckle, 703-reset arm, 704-first driven shaft, 705-rocker, 706-second driven shaft, 707-ratchet, 708-inclined tooth plate, 709-hydraulic pump, 710-pump rod, 711-hydraulic pipe. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] See also Figure 1-Figure 10The oil and gas recovery device of a petrochemical storage tank in one embodiment of the present invention comprises an adsorption and desorption component 1, wherein the adsorption and desorption component 1 comprises an adsorption and desorption tank body 101, a guide column 102, an elastic member 103, an air inlet pipe 104, an exhaust pipe 105 and a vacuum tube 108, wherein the adsorption and desorption tank body 101 is fixedly provided with a guide column 102, and an elastic member 103 is slidably sleeved on the guide column 102, and the two ends of the cavity of the adsorption and desorption tank body 101 are respectively connected with the air inlet pipe 104 and the exhaust pipe 105, and one side of the cavity of the adsorption and desorption tank body 101 is also connected with the vacuum tube 108; an adsorbent component 2, wherein the adsorbent component 2 comprises a base 201, a cavity 202, a shaft column 203, an adsorption cylinder 204 and an air hole 205, the base 201 is slidably assembled on the guide column 102 and movably abuts against the elastic member 103, a cavity 202 is arranged in the middle of the base 201, the shaft column 203 is coaxially arranged with the cavity 202 and fixedly connected with the base 201, one end of the adsorption cylinder 204 is fixedly assembled on the shaft column 203, and the other end of the adsorption cylinder 204 is spaced from the cavity 202, and a plurality of air holes 205 are arranged on the surface of the adsorption cylinder 204; the diverter component 5, the diverter component 5 includes a diverter 501, an air guide tube 502 and a lateral guide tube 504, the diverter 501 is provided with an air guide tube 502, and a plurality of lateral guide tubes 504 are also arranged on one side of the diverter 501, the guide The air pipe 502 is used to input the oil and gas to be recovered into several lateral guide pipes 504; the transmission assembly 6, the transmission assembly 6 includes a transmission main arm 601, a slide bar 602, an inclined wall member 603, a positioning column 604, a female buckle 605 and a reset rod 606, one end of the transmission main arm 601 passes through the adsorption and desorption tank body 101 and is fixedly connected to the base 201, the other end of the transmission main arm 601 is fixedly connected to the slide bar 602, the positioning column 604 is fixedly assembled on one side of the adsorption and desorption tank body 101, one end of the inclined wall member 603 is rotatably connected to the positioning column 604, and the other end of the inclined wall member 603 is fixedly provided with a female buckle 605, one end of the reset rod 606 is fixedly connected to the adsorption and desorption tank body 101, and the reset rod 60 6 The other end is slidably inserted into the inclined wall member 603; an opening and closing component 7, the opening and closing component 7 includes an opening and closing component 701, a sub-buckle 702, a reset arm 703, a first driven shaft 704 and a rocking plate 705, the opening and closing component 701 is slidably arranged on one side of the adsorption and desorption tank body 101 and movably abuts against the inclined wall member 603, a sub-buckle 702 is fixedly arranged on one side of the opening and closing component 701, the sub-buckle 702 is movably buckled with one end of the mother buckle 605, one end of the reset arm 703 is rotatably connected to the opening and closing component 701, and the other end of the reset arm 703 is rotatably connected to the rocking plate 705, one end of the first driven shaft 704 is fixedly assembled on the adsorption and desorption tank body 101, and the other end of the first driven shaft 704 is fixedly connected to the rocking plate 705.

[0032] In actual application of this embodiment, the oil and gas recovery device for the petrochemical storage tank has a relative first direction x, a second direction y and a third direction z. The base 201 is slidably arranged on the guide column 102 along the third direction z and is movably abutted against the elastic member 103. The adsorption cylinder 204 on the inner side of the base 201 is rotatably assembled on the shaft column 203, and the adsorption cylinder 204 and the cavity 202 are gap-matched. The adsorption cylinder 204 is used to fill the adsorbent component. During actual use of the device, the recovered oil and gas are input into the inner cavity of the adsorption and desorption tank body 101 through the air inlet pipe 104, and when moving in the inner cavity of the adsorption and desorption tank body 101, they can pass through the air hole 205 on the surface of the adsorption cylinder 204 to enter the inner cavity of the adsorption cylinder 204 and abut against the adsorption cylinder 203. The adsorbent filled in the adsorption cylinder 204 contacts with the adsorbent, and the adsorption characteristics of the adsorbent are used to adsorb the organic components in the oil and gas, so that the inert gas that is not easily adsorbed passes through the adsorbent gap and is discharged from the air hole 205 side at the other end of the adsorption cylinder 204, and the discharged exhaust gas enters the next treatment process through the exhaust pipe 105. During the oil and gas adsorption process, since the total mass of the adsorbent continues to increase, the base 201 slides along the guide column 102 in the negative direction of the third direction z, so that the transmission main arm 601 fixedly connected to one side of the base 201 moves synchronously in the negative direction of the third direction z. Before the adsorbent is adsorbed to a saturated state, the transmission main arm 601 synchronously pushes the slide bar 602 at one end thereof to move during the movement. Since the inclined wall member 603 passes through the guide column 102, the transmission main arm 601 moves synchronously in the negative direction of the third direction z. The positioning column 604 is rotatably arranged on one side of the adsorption and desorption tank body 101. Therefore, when the sliding rod 602 is pressed toward the side of the inclined wall member 603, the inclined wall member 603 rotates around the positioning column 604 to pull the mother buckle 605 to rotate, so that the mother buckle 605 rotates and disengages from the child buckle 702. At this time, after the child buckle 702 at one end of the opening and closing member 701 is disengaged from the mother buckle 605, the limiting structure on one side of the opening and closing member 701 disappears, so that the opening and closing member 701 moves in the positive direction of the third direction z. In this process, the opening and closing member 701 can control the air inlet pipe 104 and the exhaust pipe 105 at one end of the adsorption and desorption tank body 101 to switch from the on state to the off state, and switch the vacuum tube 108 from the off state to the on state. The vacuum tube 108 is connected to the vacuum The pump is used to make the inner cavity of the adsorption and desorption tank 101 enter a negative pressure state, and the organic matter adsorbed on the adsorbent is gradually desorbed by reducing the vacuum pressure. The high-concentration organic desorption gas discharged from the vacuum pump outlet is output to the next process. Since the total mass of the adsorbent is continuously reduced during the desorption process, when the mass of the adsorbent is reduced to a set value, the transmission main arm 601 moves in the positive direction of the third direction z following the base 201, and in the process of movement, the first driven shaft 704 is linked to rotate, so that the rocker 705 presses the opening and closing member 701 to move in the negative direction of the third direction z through the reset arm 703 during the rotation process, thereby making the sub-buckle 702 on one side of the opening and closing member 701 buckled and locked on the side of the female buckle 605 again.At this time, the opening and closing member 701 can control the air inlet pipe 104 and the exhaust pipe 105 at one end of the adsorption-desorption tank 101 to switch from a closed state to a conductive state, and switch the vacuum tube 108 from a conductive state to a closed state, so that when the device treats waste gas with large concentration fluctuations, it can automatically switch between the adsorption process and the desorption process according to the saturation state of the adsorbent, and adopt vacuum desorption to make the adsorbent desorption more thorough and without cumulative effect.

[0033] In one case of the present embodiment, the adsorption / desorption assembly 1 further includes an intake valve 106, an exhaust valve 107 and a vacuum tube valve 109. The intake valve 106 is used to control the oil and gas delivery on one side of the intake pipe 104, the exhaust valve 107 is used to control the oil and gas delivery on one side of the exhaust pipe 105, and the vacuum tube valve 109 is used to control the oil and gas delivery on one side of the vacuum tube 108. The opening and closing of the intake valve 106, the exhaust valve 107 and the vacuum tube valve 109 are all linked to the opening and closing member 701. So that when the opening and closing member 701 is at the two extreme end positions of the movement stroke, the intake valve 106, the exhaust valve 107 and the vacuum tube valve 109 are all in a normally open or normally closed state, and the opening and closing of the opening and closing member 701 and the intake valve 106, the exhaust valve 107 and the vacuum tube valve 109 can be adjusted by a transmission arm, or controlled by a hydraulic pipeline. As long as the opening and closing states of the intake valve 106, the exhaust valve 107 and the vacuum tube valve 109 can be adjusted, no specific structural limitation is made here.

[0034] See also Figure 4 In a preferred embodiment of the present invention, the adsorbent assembly 2 also includes a bracket 206, a roller 207, a tooth plate 208 and a driving gear 209. The bracket 206 is fixedly assembled at the bottom of the base 201, one end of the roller 207 is rotatably arranged on the bracket 206, and the other end of the roller 207 is rollingly connected with the outer diameter surface of the base 201. The tooth plate 208 is fixedly arranged in the inner cavity of the adsorption and desorption tank body 101, and the driving gear 209 is fixedly arranged on one side of the bracket 206, one end of the driving gear 209 is meshed with the tooth plate 208, and the other end of the driving gear 209 is transmission-connected with the roller 207.

[0035] In actual application of this embodiment, the bracket 206 is fixedly arranged at the bottom of the base 201. When the mass of the adsorbent in the adsorption cylinder 204 changes, the position of the base 201 in the third direction z changes under the influence of the elastic force of the elastic member 103 on one side of the guide column 102. When the base 201 moves relative to the adsorption and desorption tank 101, the driving gear 209 is synchronously meshed and rotated on the toothed plate 208. The driving gear 209 can use the synchronous belt to drive the roller 207 to rotate during the movement. The roller 207 rolling in contact with the outer diameter end of the adsorption cylinder 204 drives the adsorption cylinder 204 to rotate around the shaft column 203. During the rotation of the adsorption cylinder 204, since the oil and gas inlet position at one end of the air inlet pipe 104 remains unchanged, when the adsorption cylinder 204 rotates, part of the saturated adsorbent on the oil and gas inlet side can be rotated away from the oil and gas inlet, so that the oil and gas can preferentially contact with the unsaturated adsorbent during the movement, so that the filled adsorbent can fully contact with the oil and gas, thereby improving the adsorption rate of the adsorbent per unit time.

[0036] Furthermore, the base 201 and the adsorption / desorption tank body 101 are slidably sealed to limit the exhaust gas from escaping from the gap between the assemblies.

[0037] Furthermore, the device uses modified activated carbon as the adsorbent, which not only improves the adsorption and desorption performance of the activated carbon by changing the microporous structure of the activated carbon, but also makes the desorption of the activated carbon more thorough and without cumulative effect, thereby extending the service life of the activated carbon.

[0038] See also Figure 2 In a preferred embodiment of the present invention, the petrochemical storage tank oil and gas recovery device also includes a shallow cooling treatment component 3, the shallow cooling treatment component 3 includes a shallow cooling condenser 301, a shallow cooling condensation pipe 302 and a main drainage pipe 303, the shallow cooling condenser 301 is provided with a shallow cooling condensation pipe 302, one end of the cavity of the shallow cooling condenser 301 is connected to the main drainage pipe 303, and the main drainage pipe 303 is connected to the air guide pipe 502.

[0039] In actual application of this embodiment, the oil and gas to be treated are input into the cavity of the shallow cooling condenser 301 via a pipeline, and the low-temperature nitrogen after deep cooling by the deep cooling treatment component 4 is heat exchanged through the heat exchanger. The refrigerant after heat exchange uses its cold capacity to perform shallow cooling treatment on the oil and gas. The condensation temperature inside the shallow cooling condenser 301 is 5°C to ensure that the condenser is not frosted. The shallow cooling process is to remove part of the moisture in the oil and gas on the one hand to reduce the load of the adsorption system, and on the other hand to cool the oil and gas. Since adsorption is a heating process that will generate a large amount of adsorption heat, when the low-temperature oil and gas enter the adsorption tank, it can be ensured that the temperature after adsorption will not be too high, thereby ensuring the adsorption efficiency. The condensed oil and gas enter the gas-liquid separation tank, and most of the non-condensable gas enters the adsorption and desorption tank body 101 through the diversion component 5 for the adsorption and desorption process, and the small amount of liquid and moisture separated enters the product storage tank.

[0040] Furthermore, the nitrogen after deep cooling by liquid nitrogen can also be incorporated into the nitrogen pipeline network, thereby saving energy consumption.

[0041] See also Figure 2 In a preferred embodiment of the present embodiment, the petrochemical storage tank oil and gas recovery device also includes a cryogenic treatment component 4, the cryogenic treatment component 4 includes a cryogenic condenser 401, a cryogenic condensation pipe 402 and a main reflux pipe 403, a cryogenic condensation pipe 402 is arranged inside the cryogenic condenser 401, the cryogenic condensation pipe 402 is connected to the shallow reflux condensation pipe 302, one end of the cavity of the cryogenic condenser 401 is connected to the main reflux pipe 403, and the main reflux pipe 403 is connected to the vacuum tube 108.

[0042] In actual application of this embodiment, the cryogenic condenser 401 is used to recover organic matter in the vacuum desorbed gas. When the adsorbent is adsorbed to a certain saturation, the adsorption and desorption tank 101 will enter a vacuum regeneration state, and the desorbed vacuum air will be passed into the cryogenic condenser 401. The desorbed gas is condensed by liquid nitrogen cryogenic method. The cryogenic temperature is -85°C. The liquid nitrogen storage tank supplies liquid nitrogen to the cryogenic equipment through a liquid nitrogen pipeline. The flow rate of liquid nitrogen is automatically controlled by a liquid nitrogen regulating valve. Heat exchange is carried out in the cryogenic condenser 401 and it is gasified into low-temperature nitrogen and guided to the shallow-cold condenser 302 via the cryogenic condenser tube 402, and finally supplied to the nitrogen pipeline network through a nitrogen recycling device.

[0043] Furthermore, the nitrogen gas valve tube 110 is used to open the cleaning gas valve on one side of the nitrogen gas valve tube 110 while the vacuum pump continues to evacuate the adsorption-desorption tank body 101, so as to introduce a small amount of nitrogen gas, thereby further desorbing the organic matter adsorbed on the adsorbent by reducing the oil and gas partial pressure. The cleaning vacuum breaking valve on the side of the nitrogen gas valve tube 110 is opened, and the adsorption-desorption tank body 101 is gradually vacuumed to atmospheric pressure with air or nitrogen under the control of the vacuum breaking regulating valve.

[0044] Furthermore, the nitrogen gas after liquid nitrogen vaporization is not polluted and has a certain pressure. It passes through the nitrogen storage tank and then is adjusted by the valve group to a pressure slightly higher than the nitrogen pipeline network pressure. It can enter the tank area nitrogen pipeline network for reuse and can be used for nitrogen-using process needs such as shipping pipeline purging, replacement nitrogen sealing, and nitrogen purging and vacuum breaking of the adsorption and desorption unit of this system.

[0045] See also Fig. 9 and Fig.10 In a preferred embodiment of the present invention, the diversion component 5 also includes a lateral air hole 503, a sliding tube 505, a spherical head 506 and a diversion port 507. A plurality of lateral air holes 503 are arranged at one end of the air guide tube 502. The lateral air holes 503 are coaxially arranged with the lateral guide tube 504. One end of the sliding tube 505 is slidably assembled in the lateral air hole 503, and the other end of the sliding tube 505 is slidably assembled in the lateral guide tube 504. A spherical head 506 is arranged at the end of the sliding tube 505, and the spherical head 506 matches the inner diameter of the air guide tube 502. A diversion port 507 is also arranged at one end of the sliding tube 505. The diversion ports 507 on the plurality of sliding tubes 505 are all arranged in the same direction and are arranged toward the side of the main drainage tube 303.

[0046] In actual application of this embodiment, the air guide pipe 502 is arranged along the second direction y, and the plurality of lateral air holes 503 are arranged along the first direction x, and the sliding pipe 505 is slidably assembled in the lateral air holes 503. Therefore, when the sliding pipe 505 moves along the positive direction of the first direction x, the spherical head 506 on the end side of the sliding pipe 505 abuts against the inner wall of the air guide pipe 502, so that the sliding pipe 505 can block the oil and gas transportation in the air guide pipe 502 at that side position, so that the oil and gas can pass through the diversion port 507 on the side sliding pipe 505 alone, and move along the diversion port 507 to the lateral guide pipe 504 matching the side sliding pipe 505, so that the oil and gas to be treated are independently transported to the plurality of adsorption and desorption tanks 101 through the plurality of sliding pipes 505 for adsorption and desorption treatment.

[0047] Please refer to the figure Fig. 9 and Fig.10 In a preferred embodiment of the present invention, the diverter assembly 5 also includes an oil pump tube 508, an oil pump head 509 and a piston member 510. The oil pump tube 508 is fixedly arranged at one end of the diverter 501, and one end of the oil pump tube 508 is connected to the oil pump head 509. The piston member 510 is slidably arranged in the oil pump tube 508, and the piston member 510 is fixedly connected to the sliding tube 505.

[0048] In actual application of this embodiment, the oil pump pipe 508 is fixedly arranged on one side of the diverter 501, and the piston member 510 arranged in the oil pump pipe 508 is linked with the opening and closing member 701. When the adsorbent in a group of adsorption and desorption tanks 101 is supersaturated and weighted, the opening and closing member 701 at one end of the group of adsorption and desorption tanks 101 can be pulled by the opening and closing member 701 to move the sliding pipe 505 in the lateral guide pipe 504 connected to the side adsorption and desorption tank 101, so that the side sliding pipe 505 moves in the guide pipe 504. The air pipe 502 slides and contracts so that the diversion port 507 at one end of the sliding pipe 505 is in a blocked state in the contracted state, thereby cutting off the input of oil and gas on this side, and at the same time, the oil and gas in the cavity of the air guide pipe 502 moves to the side of the next group of sliding pipes 505, so that the adsorbents loaded in several adsorption and desorption tanks 101 perform the oil and gas adsorption process in turn, and when it tends to be saturated, the input of oil and gas is automatically cut off and switched to the desorption state, thereby realizing multi-stage parallel self-circulation treatment of exhaust gas with large concentration fluctuations.

[0049] See also Figure 5 , Figure 6 , Figure 7 and Figure 8 In a preferred embodiment of the present invention, the opening and closing component 7 also includes a second driven shaft 706, a ratchet 707 and a beveled tooth plate 708. The second driven shaft 706 is fixedly arranged on one side of the adsorption and desorption tank body 101, and the second driven shaft 706 is fixedly equipped with a ratchet 707. One end of the beveled tooth plate 708 is fixedly connected to the transmission main arm 601, and the other end of the beveled tooth plate 708 is unidirectionally meshed with the ratchet 707.

[0050] In actual application of this embodiment, the ratchet 707 and the bevel plate 708 are in one-way meshing transmission. When the adsorbent in the cavity of the adsorption and desorption tank 101 is saturated and weighted, the transmission main arm 601 moves in the negative direction of the third direction z. At this time, the bevel plate 708 fixedly mounted on one side of the transmission main arm 601 does not generate transmission with the ratchet 707. When the adsorbent in the cavity is desorbed and weighted, the transmission main arm 601 moves in the positive direction of the third direction z. When the ratchet 707 is meshed with the bevel plate 708, the second driven shaft 706 rotates in a fixed axis, and the synchronous belt drives the first driven shaft 704 to rotate. The first driven shaft 704 drives the reset arm 703 at one end thereof to rotate during the rotation. Since the reset arm 703 and the rocker 705 constitute a crank rocker mechanism, the rocker 705 can quickly push the opening and closing member 701 in the negative direction of the third direction z during the rotation by utilizing the quick return characteristic of the crank rocker, so that the sub-buckle 702 on one side of the opening and closing member 701 is again buckled on the mother buckle 605, and at this time, the intake valve 106, the exhaust valve 107 and the vacuum tube valve 109 linked to the opening and closing member 701 all change the open and closed state, thereby adjusting the adsorption and desorption state in the cavity of the adsorption and desorption tank body 101.

[0051] Furthermore, the opening and closing component 7 also includes a hydraulic pump 709, a pump rod 710 and a hydraulic pipe 711. The hydraulic pump 709 is fixedly arranged on one side of the adsorption and desorption tank 101, one end of the pump rod 710 is fixedly connected to the opening and closing component 701, and the other end of the pump rod 710 is equipped with a piston and is slidably arranged in the hydraulic pump 709. One end of the hydraulic pipe 711 is connected to the inner cavity of the hydraulic pump 709, and the other end of the hydraulic pipe 711 is connected to the oil pump head 509. When the piston at one end of the pump rod 710 slides in the hydraulic pump 709, the hydraulic oil filled in the hydraulic pump 709 can be connected to the oil pump head 509 through the hydraulic pipe 711, so that during the movement of the pump rod 710 in the third direction z, the piston member 510 moves synchronously in the first direction x, thereby utilizing the piston member 510 to pull the sliding tube 505 to move and adjust the opening and closing state of one side of the sliding tube 505.

[0052] The above-mentioned embodiment of the present invention provides an oil and gas recovery device for a petrochemical storage tank, which is connected to a plurality of adsorption and desorption components 1 at one end of the diversion component 5, and an active adsorbent component 2 is arranged inside the adsorption and desorption tank body 101. The oil and gas with large concentration fluctuations can be circulated and input into the plurality of adsorption and desorption components 1 for adsorption treatment, and the adsorption and desorption state can be automatically adjusted according to the saturation degree of the adsorbent in each group of adsorption and desorption components 1.

[0053] 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 petrochemical tank oil and gas recovery device, characterized in that: The petrochemical storage tank oil and gas recovery device comprises: An adsorption and desorption component, the adsorption and desorption component comprises an adsorption and desorption tank body, a guide column, an elastic member, an air inlet pipe, an exhaust pipe and a vacuum pipe, the adsorption and desorption tank body is fixedly provided with a guide column, the guide column is slidably sleeved with an elastic member, the two ends of the cavity of the adsorption and desorption tank body are respectively connected with the air inlet pipe and the exhaust pipe, and one side of the cavity of the adsorption and desorption tank body is also connected with a vacuum pipe; The adsorbent assembly comprises a base, a cavity, a shaft, an adsorption cylinder and an air hole. The base is slidably mounted on the guide column and movably abuts against the elastic member. A cavity is arranged in the middle of the base. The shaft is coaxially arranged with the cavity and fixedly connected with the base. One end of the adsorption cylinder is fixedly mounted on the shaft, and the other end of the adsorption cylinder is spaced from the cavity. A plurality of air holes are arranged on the surface of the adsorption cylinder. A flow diverter assembly, the flow diverter assembly comprising a flow diverter, an air guide pipe and a lateral guide pipe, the flow diverter is provided with an air guide pipe inside, and a plurality of lateral guide pipes are further provided on one side of the flow diverter, the air guide pipe is used to input the oil and gas to be recovered into the plurality of lateral guide pipes; A transmission assembly, the transmission assembly includes a transmission main arm, a sliding rod, an inclined wall member, a positioning column, a female buckle and a reset rod, one end of the transmission main arm passes through the adsorption and desorption tank body and is fixedly connected to the base, the other end of the transmission main arm is fixedly connected to the sliding rod, the positioning column is fixedly assembled on one side of the adsorption and desorption tank body, one end of the inclined wall member is rotatably connected to the positioning column, the other end of the inclined wall member is fixedly provided with a female buckle, one end of the reset rod is fixedly connected to the adsorption and desorption tank body, and the other end of the reset rod is slidably inserted on the inclined wall member; An opening and closing component, the opening and closing component includes an opening and closing member, a sub-buckle, a reset arm, a first driven shaft and a rocking plate. The opening and closing member is slidably arranged on one side of the adsorption and desorption tank body and movably abuts against the inclined wall member. A sub-buckle is fixedly arranged on one side of the opening and closing member, and the sub-buckle is movably buckled with one end of the mother buckle. One end of the reset arm is rotatably connected to the opening and closing member, and the other end of the reset arm is rotatably connected to the rocking plate. One end of the first driven shaft is fixedly assembled on the adsorption and desorption tank body, and the other end of the first driven shaft is fixedly connected to the rocking plate.

2. A petrochemical tank oil and gas recovery device according to claim 1, characterized in that: The adsorption and desorption component also includes an intake valve, an exhaust valve and a vacuum tube valve. The intake valve is used to control the oil and gas transportation on one side of the intake pipe, the exhaust valve is used to control the oil and gas transportation on one side of the exhaust pipe, and the vacuum tube valve is used to control the oil and gas transportation on one side of the vacuum tube.

3. The oil and gas recovery device for a petrochemical storage tank according to claim 2, characterized in that: The opening and closing of the air intake valve, the exhaust valve and the vacuum tube valve are all linked to the opening and closing parts.

4. The oil and gas recovery device for a petrochemical storage tank according to claim 1, characterized in that: The adsorbent assembly also includes a bracket, a roller, a toothed plate and a driving gear. The bracket is fixedly assembled on the bottom of the base, one end of the roller is rotatably arranged on the bracket, and the other end of the roller is rollingly connected with the outer diameter surface of the base. The toothed plate is fixedly arranged in the inner cavity of the adsorption and desorption tank body, and the driving gear is fixedly arranged on one side of the bracket, one end of the driving gear is meshed with the toothed plate, and the other end of the driving gear is transmission-connected with the roller.

5. The oil and gas recovery device for a petrochemical storage tank according to claim 1, characterized in that: The petrochemical storage tank oil and gas recovery device also includes a shallow cooling treatment component, which includes a shallow cooling condenser, a shallow cooling condensation pipe and a main drainage pipe. The shallow cooling condenser is provided with a shallow cooling condensation pipe inside, and one end of the cavity of the shallow cooling condenser is connected to the main drainage pipe, and the main drainage pipe is connected to the air guide pipe.

6. The oil and gas recovery device for a petrochemical storage tank according to claim 1, characterized in that: The petrochemical storage tank oil and gas recovery device also includes a cryogenic treatment component, which includes a cryogenic condenser, a cryogenic condensation pipe and a main reflux pipe. A cryogenic condensation pipe is arranged inside the cryogenic condenser, and the cryogenic condensation pipe is connected to the shallow condensation pipe. One end of the cavity of the cryogenic condenser is connected to the main reflux pipe, and the main reflux pipe is connected to the vacuum pipe.

7. The oil and gas recovery device for a petrochemical storage tank according to claim 1, characterized in that: The diversion assembly also includes a lateral air hole, a sliding tube, a spherical head and a diversion port. A plurality of lateral air holes are arranged at one end of the air guide tube, and the lateral air holes are coaxially arranged with the lateral guide tube. One end of the sliding tube is slidably assembled in the lateral air hole, and the other end of the sliding tube is slidably assembled in the lateral guide tube. A spherical head is arranged at the end of the sliding tube, and the spherical head matches the inner diameter of the air guide tube. A diversion port is also arranged at one end of the sliding tube, and the diversion ports on the plurality of sliding tubes are arranged in the same direction and are arranged toward one side of the main drainage tube.

8. The oil and gas recovery device for a petrochemical storage tank according to claim 7, characterized in that: The diverter assembly also includes an oil pump pipe, an oil pump head and a piston member. The oil pump pipe is fixedly arranged at one end of the diverter, one end of the oil pump pipe is connected to the oil pump head, the piston member is slidably arranged in the oil pump pipe, and the piston member is fixedly connected to the sliding tube.

9. The oil and gas recovery device for a petrochemical storage tank according to claim 1, characterized in that: The opening and closing assembly also includes a second driven shaft, a ratchet and a beveled tooth plate. The second driven shaft is fixedly arranged on one side of the adsorption and desorption tank body, and the second driven shaft is fixedly equipped with a ratchet. One end of the beveled tooth plate is fixedly connected to the transmission main arm, and the other end of the beveled tooth plate is unidirectionally meshed with the ratchet.

10. The oil and gas recovery device for a petrochemical storage tank according to claim 1, characterized in that: The opening and closing assembly also includes a hydraulic pump, a pump rod and a hydraulic pipe. The hydraulic pump is fixedly arranged on one side of the adsorption and desorption tank body. One end of the pump rod is fixedly connected to the opening and closing member. The other end of the pump rod is equipped with a piston and is slidably arranged in the hydraulic pump. One end of the hydraulic pipe is connected to the inner cavity of the hydraulic pump, and the other end of the hydraulic pipe is connected to the oil pump head.

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