Oil and gas processing plant and method of operation thereof

Abstract

The application discloses oil and gas treatment equipment, which comprises two condensing devices and a heat exchange assembly. The condensing device comprises a treatment box and a spraying part. The treatment box is provided with a treatment cavity, a guide inlet and a guide outlet. The spraying part is provided with a spraying channel, a spraying opening and a spraying inlet. The treatment box is further provided with a discharge outlet. The guide outlet of one condensing device is communicated with the guide inlet of another condensing device through a pipeline. The heat exchange assembly comprises a first heat exchanger and a second heat exchanger. The first heat exchanger is provided with a first inlet, a first outlet, a first flow inlet and a first flow outlet. The second heat exchanger is provided with a second inlet and a second outlet. The application can realize two-stage condensation on oil and gas to be condensed, and the cooling oil and cooling oil water after the condensation of the oil and gas to be condensed can be utilized, so that the utilization rate of the oil and gas to be condensed is improved, the introduction of external cooling fluid is reduced, and the overall operation cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of oil and gas processing technology, and more particularly to oil and gas processing equipment and its operating methods. Background Technology

[0002] Oil sludge is treated using thermal desorption and pyrolysis technology, which generates oil and gas. In order to recover and reuse the oil and gas, it is usually necessary to use condensation equipment to condense the oil and gas to a certain temperature so that the oil vapor in the oil and gas can eventually condense into liquid oil.

[0003] There are various methods for condensing oil and gas. One such method, according to the invention patent "A Spray Cooling System for Oil and Gas Condensation CN105219421A," involves spraying cold water onto the outside of the oil and gas pipeline to condense high-temperature oil and gas. High-temperature oil and gas typically travel at high speeds within pipelines, and the limited heat transfer area of ​​the pipelines results in poor heat exchange between the oil and gas and the cold water, affecting oil and gas condensation. Furthermore, the indirect heat exchange between the cold water and the high-temperature oil and gas creates a temperature difference, which not only reduces the condensation effect but also decreases the utilization rate of the cold water's cooling capacity, causing unnecessary loss of cooling energy.

[0004] Furthermore, to improve the condensation efficiency of oil and gas, existing processing equipment typically performs multi-stage condensation. Cooling water or air is often used as the cooling medium, and the oil and gas to be condensed needs to exchange heat with at least two streams of cooling water or air to ultimately condense into oil and non-condensable gases. Clearly, this process requires the introduction of large amounts of cooling water or air, resulting in significant wastewater or waste gas emissions, increasing the burden of wastewater or waste gas treatment and substantially raising the operating costs of the equipment. Summary of the Invention

[0005] One advantage of this invention is that it provides an oil and gas treatment device and its working method. This invention utilizes oil-containing liquid to directly exchange heat with the oil and gas to be condensed, which effectively improves the condensation effect of the oil and gas to be condensed compared with indirect heat exchange.

[0006] One advantage of this invention is that it provides an oil and gas treatment device and its operating method. This invention can perform two-stage condensation of the oil and gas to be condensed. The cooling oil and water separated from the oil and gas to be condensed after the second condensation are cooled by heat exchange with a cooling fluid and used as the cooling medium for the cooling oil separated from the oil and gas to be condensed after the first condensation. Furthermore, the cooling oil and cooling oil and water that have been cooled by heat exchange are used as the cooling medium for the two-stage condensation, so that the cooling oil and cooling oil and water after the oil and gas to be condensed can be utilized, thereby improving the utilization rate of the oil and gas to be condensed, reducing the introduction of external cooling fluid, and reducing the overall operating cost.

[0007] To achieve at least one of the above advantages of the present invention, the present invention provides an oil and gas processing device, the oil and gas processing device comprising:

[0008] The system includes two condensation devices, each comprising a processing chamber and a spray element. The processing chamber has a processing cavity, an inlet, and an outlet. Both the inlet and outlet are located at the upper end of the processing chamber and communicate with the processing cavity. The inlet introduces the oil / gas to be condensed into the processing cavity, and the outlet discharges the gaseous substances separated after condensation of the oil / gas in the processing cavity. The spray element has a spray channel, a spray nozzle, and a spray inlet. Both the spray nozzle and spray inlet communicate with the spray channel. The spray inlet introduces an oil-containing liquid into the spray channel. The spray element is installed in the processing chamber, with one end forming the spray nozzle positioned inside the processing chamber. The spray element can spray oil-containing liquid to contact and cool the oil / gas to be condensed, which is guided to the processing cavity from the inlet. The processing chamber also has an outlet communicating with the processing cavity, which discharges the oil-containing liquid from the processing cavity. One of the condensation devices... The outlet of one condensing device is connected to the inlet of another condensing device via a pipeline. The inlet of one condensing device is filled with oil-gas to be condensed, and the corresponding condensing device performs a first-stage condensation operation. The corresponding spray element sprays out an oil-containing liquid to be cooled, and the oil-gas condenses in the corresponding condensing device into cooled oil and a gaseous substance of the first-stage condensed oil-gas. The cooled oil is stored in the processing chamber, and the first-stage condensed oil-gas is discharged through the outlet. The inlet of the other condensing device is filled with oil-gas to be condensed, and the corresponding condensing device performs a second-stage condensation operation. The corresponding spray element sprays out an oil-containing liquid to be cooled, and the first-stage condensed oil-gas condenses in the condensing device into cooled oil-water and a gaseous substance of non-condensable gas. The cooled oil-water is stored in the processing chamber, and the non-condensable gas is discharged through the outlet.

[0009] A heat exchange assembly, the heat exchange assembly comprising:

[0010] A first heat exchanger has a first inlet, a first outlet, a first inlet, and a first outlet. The first inlet is connected to the outlet of the condensing device performing a first-stage condensation operation via a pipeline. The first outlet is connected to the spray inlet of the corresponding condensing device via a pipeline. The first inlet is used to introduce cooling oil and water. The first heat exchanger is capable of exchanging heat between the cooling oil introduced by the first inlet and the cooling oil and water introduced by the first inlet. The cooled cooling oil after heat exchange is guided to the corresponding spray element. The first outlet is used to discharge the cooled oil and water that have been heated after heat exchange by the first heat exchanger.

[0011] A second heat exchanger has a second inlet and a second outlet. The second inlet is connected via a pipeline to the outlet of the condensing device that performs a secondary condensation operation. The second outlet is connected via a pipeline to the spray inlet and the first flow inlet of the corresponding condensing device. The second heat exchanger is capable of exchanging heat with the cooling oil and water introduced through the second inlet to cool it down and guide the cooled cooling oil and water to the corresponding spray element and the first heat exchanger.

[0012] According to one embodiment of the present invention, the second heat exchanger further has a second inlet and a second outlet. The second inlet is used to introduce cooling fluid, and the second heat exchanger is capable of exchanging heat between the cooling oil / water introduced by the second inlet and the cooling fluid introduced by the second inlet. The second outlet is used to discharge the cooling fluid that has been heated after heat exchange by the second heat exchanger.

[0013] According to one embodiment of the present invention, the processing box further has a replenishment port communicating with the processing chamber. The replenishment port is used to replenish the processing chamber with oil-containing liquid. The first outlet is connected to the replenishment port of the condensing device performing the secondary condensation operation through a pipeline. The first heat exchanger can guide the cooled oil and water that have been heated after heat exchange to the corresponding processing chamber.

[0014] According to one embodiment of the present invention, the oil and gas treatment equipment further includes a circulation pump group, the circulation pump group including a first circulation pump, the first circulation pump being installed on the pipeline between the outlet of the condensing device performing the first-stage condensation operation and the first inlet, the first circulation pump being able to guide the cooling oil in the corresponding treatment chamber to the first heat exchanger.

[0015] According to one embodiment of the present invention, the circulating pump group further includes a second circulating pump, which is installed on the pipeline between the outlet of the condensing device performing the secondary condensation operation and the second inlet. The second circulating pump is capable of guiding the cooling oil and water in the corresponding processing chamber to the second heat exchanger.

[0016] According to one embodiment of the present invention, the oil and gas processing equipment further includes an oil storage tank, the oil storage tank having an oil inlet, and the first outlet being connected to the oil inlet via a pipeline, wherein a portion of the cooling oil cooled after heat exchange in the first heat exchanger is directed to the oil storage tank for recovery.

[0017] According to an embodiment of the present invention, the oil and gas treatment equipment further includes an oil-water separator, the oil-water separator having a liquid inlet and an oil outlet, the liquid inlet being connected to the second outlet via a pipeline, the oil outlet being connected to the oil inlet via a pipeline, the oil-water separator being configured to separate the cooling oil and water introduced through the liquid inlet to separate the cooling oil and wastewater, and the oil outlet being used to guide the cooling oil to the oil inlet for recycling.

[0018] According to one embodiment of the present invention, the oil and gas treatment equipment further includes a wastewater treatment device, the wastewater treatment device having a water inlet, and the oil-water separator having a water outlet, the water outlet being connected to the water inlet via a pipeline, the wastewater treatment device being used to treat the wastewater separated from the cooling oil and water by the oil-water separator.

[0019] According to an embodiment of the present invention, the oil and gas processing equipment includes a non-condensable gas processing device. The non-condensable gas processing device has an air inlet. The outlet of the condensing device that performs the secondary condensation operation is connected to the air inlet through a pipeline. The non-condensable gas processing device is used to process the non-condensable gas separated after the oil and gas after the primary condensation is condensed by the condensing device that performs the secondary condensation operation.

[0020] To achieve at least one of the advantages of the present invention, the present invention provides a method for operating an oil and gas processing device, the method comprising the following steps:

[0021] The inlet of a condensing device is introduced with oil gas to be condensed, and the corresponding condensing device performs a first-stage condensation operation. The oil gas is guided to the processing chamber through the inlet and is simultaneously sprayed by an oil-containing liquid, which is being cooled by a spray element. The cooling oil sprayed by the spray element is stored in the processing chamber. The oil gas is condensed into a gaseous substance that has been condensed in the first stage and is guided to the inlet of another condensing device through the outlet. At this time, the corresponding condensing device performs a second-stage condensation operation.

[0022] After primary condensation, the oil and gas are directed to the processing chamber through the inlet of the condensation device that performs secondary condensation. During this process, the oil and gas after primary condensation are cooled by the oil-containing liquid sprayed by the spray element, which is implemented as cooling oil and water. The cooling oil and water sprayed by the spray element is stored in the processing chamber. The oil and gas after primary condensation are condensed into a gaseous substance implemented as non-condensable gas and discharged through the outlet.

[0023] The cooling oil in the processing chamber of the condensing device performing the first-stage condensation operation is guided through the outlet to the first inlet of the first heat exchanger. The first heat exchanger exchanges heat between the cooling oil introduced through the first inlet and the cooling oil-water introduced through the first inlet. The heated cooling oil-water is discharged through the first outlet, and the cooled cooling oil is guided through the first outlet to the spray inlet of the spray element of the condensing device performing the first-stage condensation operation, thereby providing a cold source for the condensing device performing the first-stage condensation operation.

[0024] The cooling oil and water in the processing chamber of the condensing device performing the secondary condensation operation are guided through the outlet to the second inlet of the second heat exchanger. The cooling oil and water exchange heat in the second heat exchanger to cool down and are guided through the second outlet to the spray inlet of the spray element of the condensing device performing the secondary condensation operation and the first flow inlet of the first heat exchanger, thereby providing a cold source for the condensing device performing the secondary condensation operation and providing a cold source for heat exchange in the first heat exchanger. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of the oil and gas processing equipment of the present invention is shown.

[0026] Figure 2 A three-dimensional structural view of the condensation device of the oil and gas processing equipment of the present invention is shown.

[0027] Figure 3 A cross-sectional view of the condensation device of the oil and gas processing equipment of the present invention is shown.

[0028] Figure 4 A partial structural cross-sectional view of the condensation device of the oil and gas processing equipment of the present invention is shown.

[0029] Figure 5 A partial structural flow diagram of the oil and gas processing equipment described in this invention is shown. Detailed Implementation

[0030] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0031] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0032] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0033] refer to Figures 1 to 3 An oil and gas processing device according to a preferred embodiment of the present invention will be described in detail below, the oil and gas processing device including at least one condensation device 100.

[0034] The condensation device 100 includes a processing box 110, which has a processing chamber 1101, an inlet 1102, and an outlet 1103. The inlet 1102 and the outlet 1103 are both located at the high end of the processing box 110 and are both connected to the processing chamber 1101. The inlet 1102 is used to introduce the oil and gas to be condensed into the processing chamber 1101, and the outlet 1103 is used to discharge the gaseous substances separated after the oil and gas to be condensed in the processing chamber 1101.

[0035] refer to Figure 3 The condensation device 100 further includes a spray element 120, which has a spray channel 1201, a spray nozzle 1202, and a spray inlet 1203. Both the spray nozzle 1202 and the spray inlet 1203 communicate with the spray channel 1201. The spray inlet 1203 is used to introduce oil-containing liquid into the spray channel 1201. The spray element 120 is installed in the processing chamber 110, with one end of the spray element 120 forming the spray nozzle 1202 located inside the processing chamber 110. The spray element 120 can spray oil-containing liquid to contact and cool the oil vapor to be condensed, which is guided from the inlet 1102 to the processing chamber 1101, thereby cooling the oil vapor to be condensed.

[0036] It is worth noting that the oil-containing liquid sprayed by the spray element 120 can be guided to the processing chamber 1101 and collected within it. After being cooled by the oil-containing liquid sprayed by the spray element 120, the condensed oil vapor can be sprayed onto the oil-containing liquid stored in the processing chamber 1101 for further cooling. Compared to indirect heat exchange, this effectively improves the condensation effect on the condensed oil vapor. Furthermore, the condensed oil vapor comes into direct contact with both the oil-containing liquid sprayed by the spray element 120 and the oil-containing liquid stored in the processing chamber 1101. The oil-containing liquid carries away dust from the oil vapor, achieving a dust removal effect. This effectively prevents excessive dust contamination in the gaseous substances separated after condensation, which could clog the pipeline and affect gaseous substance transport.

[0037] refer to Figures 2 to 3 The processing chamber 110 includes a housing 111 and an inlet 112. A processing chamber 1101 is formed in the housing 111. The inlet 112 has an inlet channel 11201, and an inlet 1102 is formed in the inlet 112 and communicates with the inlet channel 11201. The inlet 112 is mounted on the top of the processing chamber 110, and one end of the inlet channel 11201, away from the inlet 1102, communicates with the processing chamber 1101. The inlet channel 11201 guides the oil and gas to be condensed through the inlet 1102 into the processing chamber 1101. The spray member 120 partially extends into the inlet channel 11201 with the spray nozzle 1202 pointing towards the oil and gas to be condensed, guiding it along the inlet channel 11201 into the processing chamber 1101.

[0038] It is worth mentioning that the oily liquid sprayed by the sprayer 120 can flow along the inner wall of the inlet channel 11201 to guide the processing chamber 1101. During this process, an oil film is formed on part of the inner wall of the inlet channel 11201 to prevent the high-temperature oil gas to be condensed from directly contacting the inner wall and damaging the inlet 112. This protects the inlet 112 and allows it to exchange heat with the oil gas to be condensed again using the oil film to further cool the oil gas to be condensed.

[0039] refer to Figures 2 to 3Preferably, the inlet member 112 has a guide portion 1121. Taking the direction of introducing the oil and gas to be condensed into the housing 111 along the inlet member 112 as a reference, the cross-sectional dimension of the guide channel 11201 of the guide portion 1121 near the inlet port 1102 gradually decreases, and the cross-sectional dimension of the guide channel 11201 of the guide portion 1121 near the processing chamber 1101 gradually increases. When the oil and gas to be condensed flows through the inlet port 1102 and passes through the guide channel 11201 located in the guide portion 1121, a negative pressure is generated at the end of the guide channel 11201 of the guide portion 1121 away from the inlet port 1102 to guide the flow of the oil and gas to be condensed, increase the flow velocity of the oil and gas to be condensed, reduce the load on the device that guides the oil and gas to be condensed into the inlet port 1102, and improve the cooling efficiency of the oil and gas to be condensed.

[0040] The processing chamber 110 further includes a discharge member 113, which has a discharge channel 11301. A discharge port 1103 is formed in the discharge member 113 and communicates with the discharge channel 11301. The discharge member 113 is installed on the top of the chamber 111, and the discharge port 1103 communicates with the processing chamber 1101 through the discharge channel 11301. The gaseous substances separated from the condensed oil and gas in the processing chamber 1101 can be guided through the discharge channel 11301 to the discharge port 1103 for discharge.

[0041] refer to Figure 3 Preferably, the outlet channel 11301 includes a first portion 113011 and a second portion 113012, and the outlet member 113 includes a guide portion 1131 and a connecting portion 1132. The first portion 113011 is formed in the guide portion 1131, the second portion 113012 is formed in the connecting portion 1132, and the outlet 1103 is formed in the connecting portion 1132 and communicates with the second portion 113012. The guide portion 1131 is installed in the housing 111, and the first portion 113011 communicates with the processing chamber 1101 and the second portion 113012. The condensed oil and gas in the processing chamber 1101 is guided to the second portion 113012 through the first portion 113011.

[0042] refer to Figure 4Preferably, with reference to the direction perpendicular to the direction from the first part 113011 to the second part 113012 after condensation treatment, the cross-sections of both the first part 113011 and the second part 113012 are circular. The outlet 113 has a cross-section along the extension direction from the first part 113011 to the second part 113012, with one side wall of the first part 113011 tangent to the cross-section of the second part 113012. The first part 113011 can guide the condensed oil and gas to rotate along the inner wall of the second part 113012 towards the outlet 1103. During this process, the gaseous substances separated after condensation of the oil and gas are discharged from the outlet 1103, and the oily liquid separated after condensation adheres to the inner wall of the second part 113012, thus achieving gas-liquid separation.

[0043] refer to Figure 3 The condensation device 100 further includes at least one blocking member 130. The blocking member 130 is installed on the inner wall of the second part 113012, and a gap 1001 is formed between the blocking member 130 and a portion of the inner wall of the second part 113012. The blocking member 130 is positioned on the flow path of the condensed oil and gas to be condensed flowing through the second part 113012 and being guided to the outlet 1103. During the process of the condensed oil and gas in the second part 113012 being guided to the outlet 1103, the condensed oil and gas impacts the blocking member 130, which intercepts dust and oily liquid separated after the condensed oil and gas. At the same time, the gaseous substances separated after the condensed oil and gas pass through the gap 1001 and are guided to the outlet 1103, so as to avoid a large amount of oily liquid being discharged with the gaseous substances, which would increase the burden of subsequent processing and greatly reduce the possibility of subsequent pipeline blockage.

[0044] Preferably, multiple blocking members 130 are provided, with at least two blocking members 130 arranged opposite each other and spaced at a predetermined height. During the process of the condensed oil and gas flowing through the second part 113012 and being guided to the outlet 1103, the condensed oil and gas collide with multiple blocking members 130 successively to achieve multiple dust removal and intercept the oil-containing liquid separated after the condensed oil and gas, thereby improving the dust removal and liquid removal effects.

[0045] Preferably, the blocking member 130 extends obliquely towards the center from one side wall of the second portion 113012 to guide the oily liquid intercepted by the blocking member 130 to be concentrated and directed to the lower end of the blocking member 130 for collection of the oily liquid.

[0046] refer to Figure 3 The lower end of the connecting portion 1132 forms a liquid collection port 113201 communicating with the second portion 113012. The connecting portion 1132 is installed on the housing 111, and the lower end of the connecting portion 1132 extends into the processing chamber 1101. The second portion 113012 communicates with the processing chamber 1101 through the liquid collection port 113201. The oily liquid in the second portion 113012 can be guided to the processing chamber 1101 through the liquid collection port 113201 and collected in the processing chamber 1101.

[0047] It is worth mentioning that the height of the liquid collection port 113201 is lower than the liquid level of the oil-containing liquid stored in the processing chamber 1101, thereby liquid-sealing the liquid collection port 113201 to prevent the oil-gas to be condensed after being condensed in the processing chamber 1101 from entering the second part 113012 through the liquid collection port 113201. In this way, the oil-gas to be condensed after being condensed in the processing chamber 1101 can only enter the second part 113012 through the first part 113011. Utilizing the cooperation of the guide part 1131 and the connecting part 1132, and based on the blocking member 130 intercepting the oil-containing liquid, the separation effect of gaseous substances and oil-containing liquid is improved.

[0048] refer to Figure 3 The condensation device 100 further includes a demister 140, which is installed on the second part 113012 and is located in the direction in which the gaseous substances separated after the oil and gas to be condensed flow through the obstruction member 130 and are guided to the outlet 1103. The demister 140 can further separate the gaseous substances and oily liquid based on the obstruction member 130, maximizing the recovery of oily liquid.

[0049] It is worth mentioning that during the process of the oil and gas to be condensed being cooled and flushed by the oil-containing liquid in the processing chamber 1101 and then guided to the outlet 1103 through the outlet channel 11301, the blocking member 130 can intercept the dust in the oil and gas to be condensed after condensation treatment for further dust removal. This effectively prevents the oil and gas to be condensed from being blocked by dust when it is processed by the demister 140. At the same time, it can also prevent the gaseous material discharged from the outlet 1103 from being transported due to the large amount of dust mixed in with the gaseous material, which would cause the transport pipeline to be blocked and affect the subsequent processing progress.

[0050] refer to Figure 3The condensation device 100 further includes an air distribution component 150, which is installed in the inlet channel 11201. The air distribution component 150 has multiple vent holes 1501 in the direction in which the oil and gas to be condensed enters the inlet channel 11201 through the inlet port 1102. The oil and gas to be condensed through the inlet port 1102 can be dispersed by the air distribution component 150 through the vent holes 1501, so that the dispersed oil and gas to be condensed can come into uniform contact with the oil-containing liquid sprayed by the spray component 120, reducing the deviation of the oil and gas to be condensed and effectively avoiding the situation where the oil and gas to be condensed is too concentrated, resulting in poor cooling effect.

[0051] Preferably, the air distribution component 150 is located on the side of the spray nozzle 1202 of the spray component 120 near the inlet 1102. The air distribution component 150 can disperse the oil-containing liquid to be condensed before it exchanges heat with the oil-containing liquid sprayed by the spray component 120, so that the dispersed oil-containing liquid to be condensed can exchange heat with the oil-containing liquid efficiently.

[0052] refer to Figures 1 to 3 The housing 111 also has a discharge port 11101 communicating with the processing chamber 1101, the discharge port 11101 being used to discharge the oil-containing liquid in the processing chamber 1101.

[0053] refer to Figures 2 to 3 The housing 111 also has a drain port 11102 that communicates with the processing chamber 1101. The drain port 11102 is located at the lower end of the housing 111 and is used to discharge dirt from the oily liquid in the processing chamber 1101.

[0054] Preferably, the bottom wall of the housing 111 is inclined, and the drain port 11102 is located at the lower end of the bottom wall of the housing 111, so that the dirt in the oily liquid in the processing chamber 1101 can settle on the bottom wall of the housing 111 and collect along the bottom wall at the lower end of the bottom wall, so that the dirt can be discharged from the drain port 11102.

[0055] refer to Figure 1 and Figure 5It is worth mentioning that two condensing devices 100 are provided. The outlet 1103 of one condensing device 100 is connected to the inlet 1102 of the other condensing device 100 via a pipeline, so that the oil and gas to be condensed can undergo two-stage condensation. The inlet 1102 of one condensing device 100 is introduced with the oil and gas to be condensed. At this time, the corresponding condensing device 100 performs a first-stage condensation operation, and the corresponding spray element 120 sprays out an oil-containing liquid to be cooled to cool the oil and gas. The oil and gas condenses in the corresponding condensing device 100 into cooling oil and the gaseous substance of the first-stage condensed oil and gas. The cooling oil is stored in the processing chamber 1101, and the first-stage condensed oil and gas is discharged through the outlet 1103; the other... The inlet 1102 of the condensing device 100 is used to introduce oil gas to be condensed after primary condensation. At this time, the corresponding condensing device 100 performs secondary condensation operation. The corresponding spray element 120 sprays out oil-containing liquid to be used as cooling oil-water to cool the oil gas after primary condensation. The oil gas after primary condensation is condensed in the condensing device 100 into cooling oil-water and gaseous substances to be used as non-condensable gases. The cooling oil-water is stored in the processing chamber 1101, and the non-condensable gases are discharged through the outlet 1103.

[0056] refer to Figure 1 and Figure 5 The oil and gas treatment equipment includes a heat exchange component 200, which includes a first heat exchanger 210. The first heat exchanger 210 has a first inlet 2101 and a first outlet 2102. The first inlet 2101 is connected via a pipeline to the outlet 11101 of the condensing device 100 that performs the first-stage condensation operation. The first outlet 2102 is connected via a pipeline to the corresponding spray inlet 1203 of the condensing device 100. The first heat exchanger 210 can exchange heat with the cooling oil introduced through the first inlet 2101 to cool it down and guide the cooled cooling oil to the corresponding spray element 120, thereby providing a cold source for cooling the oil and gas passing through the inlet 1102, so that the cooling oil separated after the oil and gas condenses can be recycled as a cooling medium.

[0057] The first heat exchanger 210 further has a first inlet 2103 and a first outlet 2104. The first inlet 2103 is used to introduce cooling oil and water, thereby providing a cold source for the first heat exchanger 210 to exchange heat with the cooling oil introduced by the first inlet 2101. The first outlet 2104 is used to discharge the cooling oil and water that have been heated after heat exchange by the first heat exchanger 210.

[0058] The heat exchange assembly 200 further includes a second heat exchanger 220, which has a second inlet 2201 and a second outlet 2202. The second inlet 2201 is connected via a pipeline to the outlet 11101 of the condensing device 100 performing the secondary condensation operation, and the second outlet 2202 is connected via a pipeline to the corresponding spray inlet 1203 of the condensing device 100. The second heat exchanger 220 can exchange heat with the cooling oil and water introduced through the second inlet 2201 to cool it down and guide the cooled cooling oil and water to the corresponding spray element 120, thereby providing a cold source for cooling the oil and gas after the first stage of condensation through the inlet 1102, so that the cooling oil and water separated after the first stage of condensation can be recycled as a cooling medium.

[0059] The second heat exchanger 220 further includes a second inlet 2203 and a second outlet 2204. The second inlet 2203 is used to introduce a cooling fluid, such as cooling water or air, thereby providing a cold source for the second heat exchanger 220 to exchange heat between the cooling oil and water introduced through the second inlet 2201 and the cooling fluid introduced through the second inlet 2203. The second heat exchanger 220 is capable of exchanging heat between the cooling oil and water introduced through the second inlet 2201 and the cooling fluid introduced through the second inlet 2203. The second outlet 2204 is used to discharge the cooling fluid that has been heated after heat exchange by the second heat exchanger 220.

[0060] It is worth mentioning that the second outlet 2202 is connected to the first inlet 2103 via a pipeline, so that the second heat exchanger 220 can provide cooled oil and water to the first heat exchanger 210, thereby providing a cold source for the first heat exchanger 210 to exchange heat with the cooling oil discharged from the processing chamber 1101 of the condensing device 100 that performs the first-stage condensation operation.

[0061] In this way, the oil and gas treatment equipment can perform two-stage condensation of the oil and gas to be condensed. The cooling oil and water separated from the oil and gas to be condensed after the second condensation are cooled by exchanging heat with the cooling fluid and used as the cooling medium for the cooling oil separated from the oil and gas to be condensed after the first condensation. Furthermore, the cooling oil and cooling oil and water that have been cooled by heat exchange are used as the cooling medium for the two-stage condensation, so that the cooling oil and cooling oil and water after the oil and gas to be condensed can be utilized, thereby improving the utilization rate of the oil and gas to be condensed, reducing the introduction of external cooling fluid, and reducing the overall operating cost.

[0062] refer to Figures 1 to 3It is worth mentioning that the housing 111 also has a replenishment port 11103 communicating with the processing chamber 1101. The replenishment port 11103 is used to replenish the processing chamber 1101 with oil-containing liquid. The first outlet 2104 is connected to the replenishment port 11103 of the condensing device 100 performing the secondary condensation operation via a pipeline. The first heat exchanger 210 can guide the heated cooling oil-water to the corresponding processing chamber 1101, thereby replenishing the processing chamber 1101 of the condensing device 100 performing the secondary condensation operation with cooling oil-water. This allows the cooling oil-water discharged from the first heat exchanger 210 to be subsequently heated by the second heat exchanger 220, serving as the cooling medium for both the first heat exchanger 210 and the condensing device 100 performing the secondary condensation operation, thus enabling the cooling oil-water to be recycled.

[0063] refer to Figures 2 to 3 The housing 111 has a thermometer interface 11104 that communicates with the processing chamber 1101. The thermometer interface 11104 allows a thermometer to be inserted into and extended into the oily liquid in the processing chamber 1101 so that the operator can monitor the temperature of the oily liquid in the processing chamber 1101.

[0064] Preferably, a first valve is installed on the pipeline connected to the second inlet 2203 of the second heat exchanger 220. When the temperature of the oil-containing liquid in the processing chamber 1101 exceeds a predetermined temperature value as indicated by the thermometer, the flow rate of the cooling fluid directed to the second inlet 2203 is increased by controlling the first valve, so that the temperature of the cooling oil and water cooled after being heated by the second heat exchanger 220 is greatly reduced, thereby improving the two-stage condensation effect.

[0065] As a deformable feature, a second valve is installed on the pipeline connected to the inlet 1102, so that when the thermometer shows that the temperature of the oil-containing liquid in the processing chamber 1101 exceeds a predetermined temperature value, the flow rate of the oil-containing gas to be condensed directed to the inlet 1102 is reduced by controlling the second valve, thereby reducing the heat exchange burden of the oil-containing liquid in the processing chamber 1101.

[0066] refer to Figures 2 to 3The housing 111 also has at least one level gauge interface 11105 communicating with the processing chamber 1101. A level gauge is installed at the level gauge interface 11105 of the housing 111 to allow operators to monitor the level of the oil-containing liquid in the processing chamber 1101. A third valve is installed on the pipeline communicating with the inlet 1102. When the level gauge indicates that the level of the oil-containing liquid in the processing chamber 1101 is lower than a predetermined value, the third valve is controlled to reduce the flow rate of the condensable oil vapor directed to the inlet 1102. This is to prevent the oil-containing liquid in the processing chamber 1101 from being too low while the flow rate of the condensable oil vapor is too high, which would result in the condensable oil vapor not being effectively cooled.

[0067] refer to Figures 2 to 3 A pressure measuring port 1104 is formed at the high end of the processing tank 110, and the height of the pressure measuring port 1104 is higher than the liquid level of the oil-containing liquid in the processing chamber 1101. The pressure measuring port 1104 is connected to any one of the processing chamber 1101, the inlet channel 11201, and the outlet channel 11301. A pressure transmitter is installed at the pressure measuring port 1104 of the processing tank 110 so that the operator can monitor the pressure changes in the processing tank 110 and suspend the equipment when the pressure in the processing tank 110 exceeds a predetermined value to prevent an explosion.

[0068] refer to Figure 1 and Figure 5 The oil and gas processing equipment further includes a circulation pump assembly 300, which includes a first circulation pump 310. The first circulation pump 310 is installed on the pipeline between the outlet 11101 and the first inlet 2101 of the condensing device 100, which performs the first-stage condensation operation. The first circulation pump 310 can guide the cooling oil in the corresponding processing chamber 1101 to the first heat exchanger 210.

[0069] The circulating pump assembly 300 further includes a second circulating pump 320, which is installed on the pipeline between the outlet 11101 and the second inlet 2201 of the condensing device 100 performing the secondary condensation operation. The second circulating pump 320 can guide the cooling oil and water in the corresponding processing chamber 1101 to the second heat exchanger 220.

[0070] refer to Figure 1 The oil and gas processing equipment further includes an oil storage tank 400, which has an oil inlet 4001. The first outlet 2102 is connected to the oil inlet 4001 via a pipeline. A portion of the cooling oil that has cooled down after heat exchange in the first heat exchanger 210 is directed to the oil storage tank 400 for recovery.

[0071] refer to Figure 1The oil and gas treatment equipment further includes an oil-water separator 500, which has a liquid inlet 5001 and an oil outlet 5002. The liquid inlet 5001 is connected to the second outlet 2202 via a pipeline, and the oil outlet 5002 is connected to the oil inlet 4001 via a pipeline. The oil-water separator 500 is configured to separate the cooling oil and water introduced through the liquid inlet 5001 to separate cooling oil and wastewater. The oil outlet 5002 is used to guide the cooling oil to the oil inlet 4001 for recovery.

[0072] It is worth mentioning that during the process of treating the condensed oil and gas in the oil and gas treatment equipment, the greater the degree of temperature reduction of the cooling oil and water discharged from the condensing device 100 performing the secondary condensation operation after heat exchange in the second heat exchanger 220, the greater the degree of temperature reduction of the cooling oil discharged from the condensing device 100 performing the primary condensation operation after heat exchange in the first heat exchanger 210. Since the cooling oil and water heated up after heat exchange in the first heat exchanger 210 can be introduced into the replenishment port 11103 of the condensing device 100 performing the secondary condensation operation, the temperature of the two-stage condensation can be controlled by adjusting the flow rate of the cooling fluid in the first inlet 2103 of the second heat exchanger 220. In this way, by controlling the temperature of the two-stage condensation, the amount of cooling oil separated from the oil and gas after the first-stage condensation is increased, thereby increasing the amount of cooling oil recovered in the first-stage condensation process, reducing the load on the subsequent oil-water separator 500, lowering the specification requirements of the oil-water separator 500, saving processing costs, reducing the impact of the operating error of the oil-water separator 500 on the overall quality of the recovered oil, and improving the quality of the recovered oil.

[0073] refer to Figure 1 The oil and gas treatment equipment further includes a wastewater treatment device 600, which has an inlet 6001. The oil-water separator 500 also has an outlet 5003, which is connected to the inlet 6001 via a pipeline. The wastewater treatment device 600 is used to treat the wastewater separated from the cooling oil by the oil-water separator 500.

[0074] refer to Figure 1 The oil and gas processing equipment includes a non-condensable gas processing device 700, which has an inlet 7001. The outlet 1103 of the condensing device 100, which performs a two-stage condensation operation, is connected to the inlet 7001 via a pipeline. The non-condensable gas processing device 700 is used to process the non-condensable gas separated after condensation by the condensing device 100 during the two-stage condensation operation.

[0075] The working method of the oil and gas processing equipment is hereby proposed, including the following steps:

[0076] The inlet 1102 of a condensing device 100 is introduced with oil gas to be condensed. At this time, the corresponding condensing device 100 performs a first-stage condensation operation. The oil gas is guided to the processing chamber 1101 through the inlet 1102 and is sprayed by the oil-containing liquid sprayed by the spray element 120 to cool it down. The cooling oil sprayed by the spray element 120 is stored in the processing chamber 1101. The oil gas is condensed into a gaseous substance after the first-stage condensation and is guided to the inlet 1102 of another condensing device 100 through the outlet 1103. At this time, the corresponding condensing device 100 performs a second-stage condensation operation.

[0077] After primary condensation, the oil and gas are guided to the processing chamber 1101 through the inlet 1102 of the condensing device 100 that performs secondary condensation. During this process, the oil and gas after primary condensation are cooled by the oil-containing liquid sprayed by the spray element 120, which is used as cooling oil and water. The cooling oil and water sprayed by the spray element 120 is stored in the processing chamber 1101. The oil and gas after primary condensation are condensed into a gaseous substance that is used as non-condensable gas and discharged through the outlet 1103.

[0078] Cooling oil in the processing chamber 1101 of the condensing device 100 performing the first-stage condensation operation is directed through the outlet 11101 to the first inlet 2101 of the first heat exchanger 210. The first heat exchanger 210 exchanges heat between the cooling oil introduced through the first inlet 2101 and the cooling oil-water introduced through the first inlet 2103. The heated cooling oil-water is discharged through the first outlet 2104, and the cooled cooling oil is directed through the first outlet 2102 to the spray inlet 1203 of the spray element 120 of the condensing device 100 performing the first-stage condensation operation, thereby providing a cold source for the condensing device 100 performing the first-stage condensation operation.

[0079] The cooling oil and water in the processing chamber 1101 of the condensing device 100 performing the secondary condensation operation are guided through the outlet 11101 to the second inlet 2201 of the second heat exchanger 220. The cooling oil and water exchange heat in the second heat exchanger 220 to cool down and are guided through the second outlet 2202 to the spray inlet 1203 of the spray element 120 of the condensing device 100 performing the secondary condensation operation and the first inlet 2103 of the first heat exchanger 210, thereby providing a cold source for the condensing device 100 performing the secondary condensation operation and providing a cold source for the first heat exchanger 210 to exchange heat.

[0080] Preferably, the non-condensable gas discharged from the outlet 1103 of the condensing device 100 performing the secondary condensation operation is directed to the inlet 7001 of the non-condensable gas treatment device 700, so that the non-condensable gas is treated by the non-condensable gas treatment device 700.

[0081] Preferably, the cooling oil and water that have been heated after heat exchange and discharged from the first outlet 2104 of the first heat exchanger 210 are directed to the replenishment port 11103 of the condensing device 100, which performs a secondary condensation operation, so that the cooling oil and water can be recycled.

[0082] Preferably, a portion of the cooling oil that has cooled down after heat exchange in the first heat exchanger 210 is guided through the first outlet 2102 to the inlet 4001 of the oil storage tank 400 for recovery.

[0083] Preferably, the portion of the cooling oil and water that has cooled down after heat exchange in the second heat exchanger 220 is guided through the second outlet 2202 to the inlet 5001 of the oil-water separator 500. The oil-water separator 500 separates the cooling oil and water to separate the cooling oil and exhaust gas. The cooling oil is guided through the oil outlet 5002 of the oil-water separator 500 to the oil inlet 4001 for recovery.

[0084] Preferably, the wastewater separated from the cooling oil by the oil-water separator is directed through the outlet 5003 of the oil-water separator 500 to the inlet 6001 of the wastewater treatment device 600, so that the wastewater can be treated by the wastewater treatment device 600.

[0085] Preferably, the first circulation pump 310 guides the cooling oil discharged from the outlet 11101 of the condensing device 100 performing the first-stage condensing operation to the first inlet 2101 of the first heat exchanger 210.

[0086] Preferably, the second circulation pump 320 guides the cooling oil and water discharged from the outlet 11101 of the condensing device 100 performing the secondary condensation operation to the second inlet 2201 of the second heat exchanger 220.

[0087] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. An oil and gas processing device, characterized in that, The oil and gas processing equipment includes: Two condensation devices are provided, each including a processing chamber and a spray element. The processing chamber has a processing cavity, an inlet, and an outlet. The inlet and outlet are both located at the upper end of the processing chamber and communicate with the processing cavity. The inlet is used to introduce oil and gas to be condensed into the processing cavity, and the outlet is used to discharge gaseous substances separated after condensation of the oil and gas in the processing cavity. The spray element has a spray channel, a spray nozzle, and a spray inlet. The spray nozzle and spray inlet are both communicated with the spray channel. The spray inlet is used to introduce oil-containing liquid into the spray channel. The spray element is installed in the processing chamber, with one end forming the spray nozzle located inside the processing chamber. The spray element can spray oil-containing liquid to contact and cool the oil and gas to be condensed guided from the inlet to the processing cavity. The processing chamber also has an outlet communicating with the processing cavity, used to discharge the oil-containing liquid from the processing cavity. The outlet of the condensing device is connected to the inlet of another condensing device via a pipeline. The inlet of one condensing device is filled with oil-gas to be condensed, and the corresponding condensing device performs a first-stage condensation operation. The corresponding spray element sprays out an oil-containing liquid to cool the oil-gas. The oil-gas condenses in the corresponding condensing device into cooling oil and a gaseous substance of the first-stage condensed oil-gas. The cooling oil is stored in the processing chamber, and the first-stage condensed oil-gas is discharged through the outlet. The inlet of the other condensing device is filled with oil-gas to be condensed, and the corresponding condensing device performs a second-stage condensation operation. The corresponding spray element sprays out an oil-containing liquid to cool the first-stage condensed oil-gas. The first-stage condensed oil-gas condenses in the condensing device into cooling oil-water and a gaseous substance of non-condensable gas. The cooling oil-water is stored in the processing chamber, and the non-condensable gas is discharged through the outlet. A heat exchange assembly, the heat exchange assembly comprising: A first heat exchanger has a first inlet, a first outlet, a first inlet, and a first outlet. The first inlet is connected to the outlet of the condensing device performing a first-stage condensation operation via a pipeline. The first outlet is connected to the spray inlet of the corresponding condensing device via a pipeline. The first inlet is used to introduce cooling oil and water. The first heat exchanger is capable of exchanging heat between the cooling oil introduced by the first inlet and the cooling oil and water introduced by the first inlet. The cooled cooling oil after heat exchange is guided to the corresponding spray element. The first outlet is used to discharge the cooled oil and water that have been heated after heat exchange by the first heat exchanger. A second heat exchanger has a second inlet and a second outlet. The second inlet is connected to the outlet of the condensing device that performs a secondary condensation operation via a pipeline. The second outlet is connected to the spray inlet and the first flow inlet of the corresponding condensing device via a pipeline. The second heat exchanger is capable of exchanging heat with the cooling oil and water introduced by the second inlet to cool it down and guide the cooled cooling oil and water to the corresponding spray element and the first heat exchanger. The second heat exchanger also has a second inlet and a second outlet. The second inlet is used to introduce cooling fluid. The second heat exchanger is capable of exchanging heat between the cooling oil and water introduced by the second inlet and the cooling fluid introduced by the second inlet. The second outlet is used to discharge the cooling fluid that has been heated after being heat-exchanged by the second heat exchanger. The processing tank also has a replenishment port that communicates with the processing chamber. The replenishment port is used to replenish the processing chamber with oil-containing liquid. The first outlet is connected to the replenishment port of the condensing device that performs the secondary condensation operation through a pipeline. The first heat exchanger can guide the cooled oil and water that have been heated after heat exchange to the corresponding processing chamber. The oil and gas processing equipment also includes a circulation pump group, which includes a first circulation pump. The first circulation pump is installed on the pipeline between the outlet of the condensing device that performs the first-stage condensing operation and the first inlet. The first circulation pump can guide the cooling oil in the corresponding processing chamber to the first heat exchanger. The circulating pump group also includes a second circulating pump, which is installed on the pipeline between the outlet and the second inlet of the condensing device that performs the secondary condensing operation. The second circulating pump can guide the cooling oil and water in the corresponding processing chamber to the second heat exchanger. The oil and gas processing equipment also includes an oil storage tank, which has an oil inlet. The first outlet is connected to the oil inlet via a pipeline. A portion of the cooling oil that has cooled down after heat exchange in the first heat exchanger is directed to the oil storage tank for recovery. The oil and gas treatment equipment further includes an oil-water separator, which has a liquid inlet and an oil outlet. The liquid inlet is connected to the second outlet via a pipeline, and the oil outlet is connected to the oil inlet via a pipeline. The oil-water separator is configured to separate the cooling oil and water introduced through the liquid inlet to separate the cooling oil and wastewater. The oil outlet is used to guide the cooling oil to the oil inlet for recycling. The processing chamber has a thermometer interface communicating with the processing cavity, the thermometer interface allowing a thermometer to be inserted into and extended into the oily liquid in the processing cavity; The pipeline connected to the second inlet of the second heat exchanger is equipped with a first valve, which is used to increase the flow rate of cooling fluid directed to the second inlet when the temperature of the oil-containing liquid in the processing chamber exceeds a predetermined temperature value as indicated by the thermometer. A second valve is installed on the pipeline connected to the inlet. When the thermometer shows that the temperature of the oil-containing liquid in the processing chamber exceeds a predetermined temperature value, the second valve is controlled to reduce the flow rate of the condensable oil gas directed to the inlet. The processing tank also has at least one level gauge interface communicating with the processing chamber. A level gauge is installed at the level gauge interface of the processing tank. A third valve is installed on the pipeline communicating with the inlet. When the level gauge shows that the level of the oil-containing liquid in the processing chamber is lower than a predetermined value, the flow rate of the oil gas to be condensed, which is directed to the inlet, is reduced by controlling the third valve.

2. The oil and gas processing equipment according to claim 1, characterized in that, The oil and gas treatment equipment also includes a wastewater treatment device, which has an inlet and an outlet. The outlet is connected to the inlet via a pipeline. The wastewater treatment device is used to treat the wastewater separated from the cooling oil by the oil-water separator.

3. The oil and gas processing equipment according to claim 1, characterized in that, The oil and gas processing equipment includes a non-condensable gas processing device. The non-condensable gas processing device has an air inlet. The outlet of the condensing device that performs the secondary condensation operation is connected to the air inlet through a pipeline. The non-condensable gas processing device is used to process the non-condensable gas separated after the oil and gas after the primary condensation is condensed by the condensing device that performs the secondary condensation operation.

4. A method for operating an oil and gas processing device, comprising the oil and gas processing device according to any one of claims 1-3, characterized in that, The working method of the oil and gas processing equipment includes the following steps: The inlet of a condensing device is introduced with oil gas to be condensed, and the corresponding condensing device performs a first-stage condensation operation. The oil gas is guided to the processing chamber through the inlet and is simultaneously sprayed by an oil-containing liquid, which is being cooled by a spray element. The cooling oil sprayed by the spray element is stored in the processing chamber. The oil gas is condensed into a gaseous substance that has been condensed in the first stage and is guided to the inlet of another condensing device through the outlet. At this time, the corresponding condensing device performs a second-stage condensation operation. After primary condensation, the oil and gas are directed to the processing chamber through the inlet of the condensation device that performs secondary condensation. During this process, the oil and gas after primary condensation are cooled by the oil-containing liquid sprayed by the spray element, which is implemented as cooling oil and water. The cooling oil and water sprayed by the spray element is stored in the processing chamber. The oil and gas after primary condensation are condensed into a gaseous substance implemented as non-condensable gas and discharged through the outlet. The cooling oil in the processing chamber of the condensing device performing the first-stage condensation operation is guided through the outlet to the first inlet of the first heat exchanger. The first heat exchanger exchanges heat between the cooling oil introduced through the first inlet and the cooling oil-water introduced through the first inlet. The heated cooling oil-water is discharged through the first outlet, and the cooled cooling oil is guided through the first outlet to the spray inlet of the spray element of the condensing device performing the first-stage condensation operation, thereby providing a cold source for the condensing device performing the first-stage condensation operation. The cooling oil and water in the processing chamber of the condensing device performing the secondary condensation operation are guided through the outlet to the second inlet of the second heat exchanger. The cooling oil and water exchange heat in the second heat exchanger to cool down and are guided through the second outlet to the spray inlet of the spray element of the condensing device performing the secondary condensation operation and the first flow inlet of the first heat exchanger, thereby providing a cold source for the condensing device performing the secondary condensation operation and providing a cold source for heat exchange in the first heat exchanger.

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