A condensation sampling device and method of condensation sampling

Abstract

The application discloses a condensation sampling device and a condensation sampling method, and relates to the technical field of condensation sampling. The condensation sampling device comprises a synthesis chamber, a condensation assembly, a liquid recovery tank and a gas-liquid separator. The liquid recovery tank is connected with the condensation assembly through a first branch pipeline, the first branch pipeline is used for guiding the condensed liquid synthesis product into the liquid recovery tank, and the liquid recovery tank is used for storing the liquid synthesis product. The gas-liquid separator is arranged downstream of the condensation assembly, and the gas-liquid separator is connected with the liquid recovery tank through a second branch pipeline. The gas-liquid separator is used for separating the synthesis product passing through the condensation assembly into the liquid synthesis product, and the second branch pipeline is used for guiding the separated liquid synthesis product into the liquid recovery tank. The condensation sampling device disclosed by the application can improve the recovery of the synthesis product and the reuse of the reactant, thereby improving the accuracy of the sampling detection data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of condensation sampling, and particularly relates to a condensation sampling device and a condensation sampling method. BACKGROUND

[0002] The condenser is an important component in a refrigeration system, and the main function of the condenser is to convert gas or vapor into liquid. The condenser is widely used in various industrial fields, and in the petrochemical industry, the condenser is used to condense hydrocarbons and their chemical vapors.

[0003] In the related art, the condensation sampling device has incomplete condensation, which leads to a large deviation in collecting data of the synthesized product after reaction, and affects the sampling analysis result. SUMMARY

[0004] The condensation sampling device provided by the present application can improve the recovery of the synthesized product and the reuse of the reactant, thereby improving the accuracy of the sampling detection data.

[0005] In one aspect, the present application provides a condensation sampling device, which comprises a first circulation loop. The first circulation loop comprises a synthesis chamber, a condensation assembly, a liquid recovery tank and a gas-liquid separator. The synthesis chamber is used for synthesizing a preset raw material into a synthesized product. The condensation assembly is arranged downstream of the synthesis chamber and is used for condensing part of the gaseous synthesized product into a liquid synthesized product. The liquid recovery tank is connected to the condensation assembly through a first branch pipeline, the first branch pipeline is used for guiding the condensed liquid synthesized product into the liquid recovery tank, and the liquid recovery tank is used for storing the liquid synthesized product. The gas-liquid separator is arranged downstream of the condensation assembly and is connected to the liquid recovery tank through a second branch pipeline. The gas-liquid separator is used for separating the liquid synthesized product from the synthesized product passing through the condensation assembly, and the second branch pipeline is used for guiding the separated liquid synthesized product into the liquid recovery tank.

[0006] The condensation sampling device of the present application embodiment has the condensation assembly arranged downstream of the synthesis chamber and connected to the synthesis chamber through a pipeline, so that the gaseous synthesized product generated in the synthesis chamber can smoothly enter the condensation assembly. The condensation assembly condenses the gaseous synthesized product into a liquid synthesized product and guides the liquid synthesized product into the liquid recovery tank for storage through the first branch pipeline. The gas-liquid separator is arranged downstream of the condensation assembly and connected to the liquid recovery tank through the second branch pipeline, so that the synthesized product that is not completely condensed in the mixed gas can be further separated in the gas-liquid separator and guided into the liquid recovery tank for storage through the second branch pipeline. Through the synergistic effect of the condensation assembly and the gas-liquid separator, efficient condensation of the gaseous synthesized product and full recovery of the liquid synthesized product are realized, the loss of the synthesized product is reduced, and thus the accuracy of the sampling detection data is improved. Therefore, the condensation sampling device provided by the present application can improve the recovery of the synthesized product and the reuse of the reactant, thereby improving the accuracy of the sampling detection data.

[0007] In a possible implementation of the present application, the condensing and sampling device further comprises a pressure stabilizing pipeline connected to the first interface of the condensing assembly, the condensing assembly further comprises an inlet and an outlet, the inlet is connected to the synthesis chamber, the outlet is connected to the liquid recovery tank, the first interface is arranged between the inlet and the outlet, and the first interface is arranged apart from the outlet.

[0008] In a possible implementation of the present application, the condensing assembly further comprises a second interface connected to the gas-liquid separator, and the second interface is arranged between the first interface and the outlet.

[0009] In a possible implementation of the present application, the first circulation loop further comprises a circulating pump, and the circulating pump is arranged between the synthesis chamber and the gas-liquid separator, and the circulating pump drives the synthesis to flow in sequence through the synthesis chamber, the condensing assembly and the gas-liquid separator.

[0010] In a possible implementation of the present application, the first circulation loop further comprises a buffer tank, and the buffer tank is arranged between the synthesis chamber and the circulating pump, and the buffer tank is provided with a feeding port for feeding the preset raw materials into the buffer tank.

[0011] In a possible implementation of the present application, a first valve is arranged between the buffer tank and the synthesis chamber, and the first valve can connect or isolate the buffer tank and the synthesis chamber; and a second valve is arranged between the buffer tank and the circulating pump, and the second valve can connect or isolate the buffer tank and the circulating pump.

[0012] In a possible implementation of the present application, the condensing and sampling device further comprises a second circulation loop, and the second circulation loop comprises a heat exchanger for providing a cooling medium flowing in the second circulation loop, and the second circulation loop exchanges heat with the first circulation loop through the condensing assembly.

[0013] In a possible implementation of the present application, the condensing assembly comprises a first channel and a second channel, the first channel is connected to the first circulation loop, the second channel is connected to the second circulation loop, and the first channel is arranged on the outer circumferential side of the second channel.

[0014] In a possible implementation of the present application, the liquid recovery tank comprises a liquid level indicator for indicating the storage amount of the liquid synthesis in the liquid recovery tank; and / or, the liquid recovery tank comprises a sampling valve for connecting or isolating the liquid recovery tank from the outside.

[0015] In another aspect, the application provides a method for condensing sampling, applied to the condensing sampling device of any one of the above, the first circulation loop further comprising a buffer tank, a circulating pump, and a first valve and a second valve arranged at both ends of the buffer tank; the method comprising: closing the first valve and the second valve, and vacuumizing the buffer tank; injecting a preset volume of hydrogen into the buffer tank; opening the first valve and the second valve, and injecting helium into the buffer tank; determining that the pressure in the buffer tank is positive, and opening the circulating pump; and injecting a preset volume of oxygen into the buffer tank.

[0016] Therefore, the method for condensing sampling provided by the application comprises the condensing sampling device of any one of the above, and thus has the same technical effects, i.e., the recovery of the synthetic product and the reuse of the reactants are improved, thereby improving the accuracy of the sampling detection data. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structural schematic diagram of the condensing sampling device provided by the embodiment of the application;

[0018] Figure 2 A liquid recovery tank and a connection structure schematic diagram of the condensing sampling device provided by the embodiment of the application;

[0019] Figure 3 A structural diagram of the condensing assembly of the condensing sampling device provided by the embodiment of the application;

[0020] Figure 4 One of the step diagrams of the method for condensing sampling provided by the embodiment of the application;

[0021] Figure 5 The second of the step diagrams of the method for condensing sampling provided by the embodiment of the application.

[0022] Reference signs:

[0023] 1-first circulation loop; 11-synthesis chamber; 12-condensing assembly; 121-first interface; 122-inlet; 123-outlet; 124-second interface; 125-first channel; 126-second channel; 13-liquid recovery tank; 131-sampling valve; 14-gas-liquid separator; 15-circulating pump; 16-buffer tank; 17-first valve; 18-second valve; L1-first branch pipeline; L2-second branch pipeline; 2-pressure stabilizing pipeline; 3-second circulation loop; 31-heat exchanger; 32-cooling pipeline; 4-main pipeline. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the application more clear, the specific technical solutions of the application will be further described in detail below with reference to the drawings in the embodiments of the application. The following embodiments are used to illustrate the application, but not to limit the scope of the application.

[0025] In the embodiments of the present application, the terms "first", "second" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left" and "right" are defined with respect to the orientation of the components shown in the drawings, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0027] In the embodiments of the present application, unless otherwise explicitly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0028] In the embodiments of the present application, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0029] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean an example, illustration, or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of the words such as "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0030] The condensation sampling device is mainly used in the scene where gas or vapor condensate needs to be collected and analyzed, for example: in laboratory research, collecting gas condensate for component analysis; in industrial chemical industry, monitoring the condensate in the reaction gas to optimize the process; in the field of energy, monitoring impurities in boiler steam to reduce equipment corrosion, etc.

[0031] The existing condensation sampling device has the problem of incomplete condensation, which leads to a large deviation in collecting data of the synthesized substance after reaction, affecting the sampling analysis result.

[0032] Referring to Figure 1 and Figure 2 , the embodiment of the present application provides a condensation sampling device, which comprises a first circulation loop 1, the first circulation loop 1 comprising a synthesis chamber 11, a condensation assembly 12, a liquid recovery tank 13 and a gas-liquid separator 14. The synthesis chamber 11 is used for synthesizing preset raw materials into a synthesis product; the condensation assembly 12 is arranged downstream of the synthesis chamber 11, and the condensation assembly 12 is used for condensing part of the gaseous synthesis product into a liquid synthesis product; the liquid recovery tank 13 is connected with the condensation assembly 12 through a first branch pipeline L1, the first branch pipeline L1 is used for guiding the condensed liquid synthesis product into the liquid recovery tank 13, and the liquid recovery tank 13 is used for storing the liquid synthesis product; the gas-liquid separator 14 is arranged downstream of the condensation assembly 12, and the gas-liquid separator 14 is connected with the liquid recovery tank 13 through a second branch pipeline L2; the gas-liquid separator 14 is used for separating the synthesis product passing through the condensation assembly 12 into the liquid synthesis product, and the second branch pipeline L2 is used for guiding the separated liquid synthesis product into the liquid recovery tank 13.

[0033] In the embodiment of the present application, in the first circulation loop 1, the preset raw materials are usually gases, such as hydrogen, oxygen and the like; in order to stabilize the gas pressure inside the condensation sampling device, inert gases, such as helium, nitrogen and the like, are also filled into the condensation sampling device.

[0034] In the embodiment of the present application, the condensation assembly 12 is arranged downstream of the synthesis chamber 11, and the condensation assembly 12 and the synthesis chamber 11 can be communicated through a main pipeline 4, so that the synthesis product generated in the synthesis chamber 11 can enter the condensation assembly 12.

[0035] In the embodiment of the present application, in the first circulation loop 1, the preset raw materials react in the synthesis chamber 11 to generate a synthesis product, and the generated synthesis product is usually a gaseous synthesis product. At this time, the condensation sampling device comprises a mixed gas composed of the gaseous synthesis product, unreacted preset raw materials and inert gases.

[0036] Referring to Figure 1 and Figure 2 , in the embodiment of the present application, the condensation assembly 12 is arranged downstream of the synthesis chamber 11, therefore, the mixed gas can enter the condensation assembly 12 through the main pipeline 4, the condensation assembly 12 condenses the gaseous synthesis product into a liquid synthesis product, and the condensed liquid synthesis product flows into the liquid recovery tank 13 through the first branch pipeline L1.

[0037] In the embodiment of the present application, since the gas-liquid separator 14 is located downstream of the condensation assembly 12, the mixed gas enters the gas-liquid separator 14 from the condensation assembly 12, and the gas-liquid separator 14 separates the gas and the uncondensed synthesis product in the mixed gas.

[0038] In the embodiment of the present application, the gas-liquid separator 14 is connected to the liquid recovery tank 13 through the second branch pipeline L2, and the liquid synthetic product separated by the gas-liquid separator 14 can be stored in the liquid recovery tank 13 through the second branch pipeline L2.

[0039] In the embodiment of the present application, the gas separated by the gas-liquid separator 14 can include inert gas used for balancing pressure and avoiding explosion in the condensation sampling device, and the preset raw material that has not completed the reaction, and these inert gas and the preset raw material can continue to circulate in the condensation sampling device, and the preset raw material that has not completed the reaction can continue to react in the synthesis chamber 11, and the inert gas can continue to be used for balancing pressure and avoiding explosion.

[0040] The condensation sampling device of the embodiment of the present application, since the condensation assembly 12 is arranged downstream of the synthesis chamber 11 and is connected to the synthesis chamber 11 through the first pipeline, the gaseous synthetic product generated in the synthesis chamber 11 can smoothly enter the condensation assembly 12, the condensation assembly 12 condenses the gaseous synthetic product into liquid synthetic product and guides the liquid synthetic product into the liquid recovery tank 13 through the first branch pipeline L1. Since the gas-liquid separator 14 is arranged downstream of the condensation assembly 12 and is connected to the liquid recovery tank 13 through the second branch pipeline L2, the synthetic product that has not been completely condensed in the mixed gas can be further separated in the gas-liquid separator 14 and guided into the liquid recovery tank 13 through the second branch pipeline L2. Through the synergistic effect of the condensation assembly 12 and the gas-liquid separator 14, efficient condensation of the gaseous synthetic product and sufficient recovery of the liquid synthetic product are realized, the loss of the synthetic product is reduced, and therefore the accuracy of the sampling detection data is improved. Therefore, the condensation sampling device provided by the present application can improve the recovery of the synthetic product and the reuse of the reactant, thereby improving the accuracy of the sampling detection data.

[0041] Referring to Figure 1 , Figure 2 and Figure 3 In some possible embodiments of the present application, the condensation sampling device further comprises a pressure stabilizing pipeline 2 connected to the first interface 121 of the condensation assembly 12, the condensation assembly 12 further comprises an inlet 122 and an outlet 123, the inlet 122 is connected to the synthesis chamber 11, the outlet 123 is connected to the liquid recovery tank 13, the first interface 121 is arranged between the inlet 122 and the outlet 123, and the first interface 121 is arranged spaced apart from the outlet 123.

[0042] In the embodiment of the present application, the inlet 122 of the condensing assembly 12 is connected with the synthesis chamber 11, the outlet 123 of the condensing assembly 12 is connected with the liquid recovery tank 13, the gaseous synthesis product generated in the synthesis chamber 11 enters the condensing assembly 12 from the inlet 122 through the main pipeline 4, the gaseous synthesis product is condensed to form liquid synthesis product in the condensing assembly 12, and the liquid synthesis product flows out from the outlet 123 under the action of gravity or pressure and enters the liquid recovery tank 13 through the first branch pipeline L1.

[0043] In the embodiment of the present application, if the air pressure between the condensing assembly 12 and the liquid recovery tank 13 is unbalanced, the liquid synthesis product may not flow into the liquid recovery tank 13 smoothly, and even the problem of backflow or blockage may be caused. The pressure stabilizing pipeline 2 is used to communicate the condensing assembly 12 and the liquid recovery tank 13, balance the air pressure between the condensing assembly 12 and the liquid recovery tank 13, and enable the liquid synthesis product to flow from the condensing assembly 12 into the liquid recovery tank 13 smoothly by balancing the air pressure.

[0044] In the embodiment of the present application, the main function of the pressure stabilizing pipeline 2 is to adjust the air pressure, rather than to transport liquid. By spacing the first interface 121 from the outlet 123, the distance between the first interface 121 and the outlet 123 can be maintained, and the size of the distance can be adjusted according to the parameters of the condensing sampling device. Maintaining the distance between the first interface 121 and the outlet 123 can reduce the liquid synthesis product entering the pressure stabilizing pipeline 2 through the first interface 121, thereby balancing the air pressure between the condensing assembly 12 and the liquid recovery tank 13.

[0045] The condensing sampling device of the embodiment of the present application can balance the air pressure between the condensing assembly 12 and the liquid recovery tank 13 through the pressure stabilizing pipeline 2 connected between the condensing assembly 12 and the liquid recovery tank 13, the first interface 121 of the condensing assembly 12 located between the inlet 122 and the outlet 123, and the first interface 121 spaced from the outlet 123, and enable the liquid synthesis product to flow from the condensing assembly 12 into the liquid recovery tank 13 smoothly by balancing the air pressure.

[0046] Referring to Figure 1 , Figure 2 and Figure 3 , in some possible embodiments of the present application, the condensing assembly 12 further comprises a second interface 124 connected with the gas-liquid separator 14, and the second interface 124 is arranged between the first interface 121 and the outlet 123.

[0047] In the embodiment of the present application, the condensing assembly 12 and the gas-liquid separator 14 are connected through the main pipeline 4, and the main pipeline 4 is connected at the second interface 124 of the condensing assembly 12.

[0048] Referring to Figure 1 and Figure 2In the embodiment of the present application, the second interface 124 is arranged between the first interface 121 and the outlet 123, that is, the second interface 124 is closer to the outlet 123 of the condensing assembly 12 than the first interface 121. Since the gaseous synthetic product flows in the condensing assembly 12 after entering the condensing assembly 12 from the inlet 122 and gradually condenses, in the case that the second interface 124 is closer to the outlet 123 of the condensing assembly 12, the gaseous synthetic product has a longer movement path in the condensing assembly 12, and the gaseous synthetic product has a longer time to fully contact the condensing assembly 12, thereby improving the condensing efficiency.

[0049] The condensing and sampling device of the embodiment of the present application prolongs the flow path of the gaseous synthetic product in the condensing assembly 12, so that the gaseous synthetic product has enough time to fully contact the condensing assembly 12 before reaching the second interface 124, which helps to improve the condensing efficiency, so that more gaseous synthetic products are converted into liquid synthetic products, thereby improving the recovery rate of the synthetic product and reducing the uncondensed synthetic product, and reducing the burden of the gas-liquid separator 14.

[0050] Reference Figure 1 In some possible embodiments of the present application, the first circulation loop 1 further comprises a circulating pump 15, which is located between the synthesis chamber 11 and the gas-liquid separator 14, and the circulating pump 15 at least drives the synthetic product to flow along the synthesis chamber 11, the condensing assembly 12 and the gas-liquid separator 14 in sequence.

[0051] In the embodiment of the present application, the circulating pump 15 is located between the synthesis chamber 11 and the gas-liquid separator 14, and can be arranged on the main pipeline 4 between the condensing assembly 12 and the gas-liquid separator 14, that is, the circulating pump 15 is connected with the synthesis chamber 11 through the main pipeline 4, and the circulating pump 15 and the gas-liquid separator 14 are connected through the main pipeline 4.

[0052] In the embodiment of the present application, the circulating pump 15 at least drives the synthetic product to flow along the synthesis chamber 11, the condensing assembly 12 and the gas-liquid separator 14 in sequence, which can be understood as that the circulating pump 15 is used to maintain the stable flow and pressure in the first circulation loop 1. The circulating pump 15 can be a centrifugal pump, a gear pump, a peristaltic pump, a vacuum pump, etc.

[0053] In the embodiment of the present application, the circulating pump 15 can also be used to drive the inert gas, the preset raw material and the unreacted preset raw material to flow along the synthesis chamber 11, the condensing assembly 12 and the gas-liquid separator 14 in sequence. For example, the circulating pump 15 can drive the gas (including the unreacted preset raw material and the inert gas) separated from the gas-liquid separator 14 to re-enter the synthesis chamber 11, so as to realize the recycling of the preset raw material and the continuous balance of the inert gas.

[0054] The condensation sampling device of the embodiment of the present application, the circulating pump 15 drives the unreacted preset raw materials separated in the gas-liquid separator 14 back to the synthesis chamber 11, improves the utilization rate of the preset raw materials, promotes the continuous reaction, and improves the overall reaction efficiency. The circulating pump 15 maintains the stable flow and pressure in the first circulating loop 1, reduces the disorder of the first circulating loop 1 caused by pressure fluctuation or poor flow, and improves the stability of the operation of the condensation sampling device.

[0055] With reference to Figure 1 In some possible embodiments of the present application, the first circulating loop 1 further comprises a buffer tank 16, the buffer tank 16 is located between the synthesis chamber 11 and the circulating pump 15, and the buffer tank 16 is provided with a feed inlet through which the preset raw materials can enter the buffer tank 16.

[0056] In the embodiment of the present application, the buffer tank 16 is connected with the synthesis chamber 11 and the circulating pump 15 through the main pipeline 4, the buffer tank 16 is provided with a feed inlet, and the number of the feed inlets can be one or more, which can be adjusted according to the requirements.

[0057] In the embodiment of the present application, the preset raw materials and the inert gas can enter the buffer tank 16 through the feed inlets. After the preset raw materials enter the buffer tank 16 through the feed inlets, they enter the synthesis chamber 11 through the main pipeline 4. The buffer tank 16 can be used for storing the preset raw materials or providing the preset raw materials to the synthesis chamber 11.

[0058] In the embodiment of the present application, a pressure sensor can be arranged in the buffer tank 16 to monitor the pressure in the buffer tank 16.

[0059] The condensation sampling device of the embodiment of the present application, the buffer tank 16 can be used as a temporary storage device for the preset raw materials. When the preset raw materials enter the buffer tank 16 through the feed inlets, the buffer tank 16 can store a certain amount of the preset raw materials and continuously supply them according to the requirements of the synthesis chamber 11, thereby reducing the reaction fluctuation or interruption caused by unstable supply of the preset raw materials. Moreover, the buffer tank 16 can make the supply of the preset raw materials more stable, thereby reducing the influence of the fluctuation of the flow of the preset raw materials on the synthesis reaction and the safety hazards.

[0060] With reference to Figure 1 In some possible embodiments of the present application, a first valve 17 is arranged between the buffer tank 16 and the synthesis chamber 11, the first valve 17 can connect or isolate the buffer tank 16 and the synthesis chamber 11; and a second valve 18 is arranged between the buffer tank 16 and the circulating pump 15, the second valve 18 can connect or isolate the buffer tank 16 and the circulating pump 15.

[0061] In the embodiment of the present application, the first valve 17 is used to control the communication state between the buffer tank 16 and the synthesis chamber 11, and can connect or isolate the buffer tank 16 and the synthesis chamber 11. When the first valve 17 is opened, the preset raw materials and inert gas in the buffer tank 16 can enter the synthesis chamber 11 to participate in the synthesis reaction. When the first valve 17 is closed, the channel between the buffer tank 16 and the synthesis chamber 11 is cut off, and the preset raw materials and inert gas cannot enter the synthesis chamber 11.

[0062] In the embodiment of the present application, the second valve 18 is used to control the communication state between the buffer tank 16 and the circulating pump 15, and can connect or isolate the buffer tank 16 and the circulating pump 15. When the second valve 18 is opened, the preset raw materials and inert gas in the buffer tank 16 can enter the circulating loop through the circulating pump 15 to participate in the subsequent condensation and gas-liquid separation process. When the second valve 18 is closed, the channel between the buffer tank 16 and the circulating pump 15 is cut off, and the preset raw materials and inert gas cannot enter the circulating loop.

[0063] In the embodiment of the present application, the first valve 17 and the second valve 18 can be opened or closed separately or simultaneously. The first valve 17 can be arranged on the main pipeline 4 connecting the buffer tank 16 and the synthesis chamber 11. The second valve 18 can be arranged on the main pipeline 4 connecting the buffer tank 16 and the circulating pump 15.

[0064] The condensation sampling device in the embodiment of the present application can accurately adjust the flow of the preset raw materials and inert gas through the opening and closing control of the first valve 17 and the second valve 18, optimize the reaction conditions and system operation state, and quickly cut off the first circulating loop 1 by closing the first valve 17 and the second valve 18 when the condensation sampling device abnormally, thereby reducing the possibility of accidents.

[0065] Reference Figure 1 In some possible embodiments of the present application, the condensation sampling device further comprises a second circulating loop 3, the second circulating loop 3 comprises a heat exchanger 31, the heat exchanger 31 is used to provide a cooling medium flowing in the second circulating loop 3, and the second circulating loop 3 exchanges heat with the first circulating loop 1 through the condensation assembly 12.

[0066] In the embodiment of the present application, the second circulating loop 3 can further comprise a cooling pipeline 32 and a circulating pump 15, etc. The cooling pipeline 32 is used to connect the heat exchanger 31 and the circulating pump 15, etc. The second circulating loop 3 flows through the cooling medium in the cooling pipeline 32 to provide cooling capacity for the condensation assembly 12, so as to realize the condensation of the gaseous synthesis product in the first circulating loop 1.

[0067] In the embodiment of the present application, the heat exchanger 31 is used to take away the heat of the cooling medium through heat exchange, so as to cool the cooling medium.

[0068] In the embodiments of the present application, the cooling medium can be water, ethylene glycol solution, or refrigerant (such as freon). Water is suitable for low-temperature cooling scenarios, has low cost and is easy to obtain; ethylene glycol solution is suitable for low-temperature cooling scenarios and has antifreeze performance; and refrigerant (such as freon) is suitable for high-efficiency cooling scenarios and is commonly used in refrigeration systems.

[0069] For example, the heat exchanger 31 can be a circulating cooling water machine, and the cooling medium is water. The temperature of the water is reduced by the circulating cooling water machine, and the water at a lower temperature exchanges heat with the composition in the condensing assembly 12, so that the composition is liquefied into liquid composition. The temperature of the water after heat exchange is increased, and the water flows into the circulating cooling machine in the second circulation loop 3 to be cooled again and then circulates in the second circulation loop 3.

[0070] The condensing and sampling device of the embodiments of the present application can efficiently exchange heat between the second circulation loop 3 and the gaseous composition of the first circulation loop 1 through the cooling medium, thereby improving the condensing efficiency. The circulation of the cooling medium can continuously provide the condensing assembly 12 with cooling capacity, thereby reducing the decrease in condensing effect caused by insufficient cooling. In addition, the recycling of the cooling medium can reduce the cooling cost and waste of resources.

[0071] Referring to Figure 1 and Figure 3 In some possible embodiments of the present application, the condensing assembly 12 includes a first passage 125 and a second passage 126. The first passage 125 is connected to the first circulation loop 1, and the second passage 126 is connected to the second circulation loop 3. The first passage 125 is arranged on the outer circumferential side of the second passage 126.

[0072] In the embodiments of the present application, the first passage 125 is connected to the first circulation loop 1, which means that the composition synthesized in the synthesis chamber 11 can enter the first passage 125. The second passage 126 is connected to the second circulation loop 3, which means that the cooling pipeline 32 is connected to the second passage 126, and the cooling medium can flow into the second passage 126 through the cooling pipeline 32 and then continue to circulate in the cooling pipeline 32 after flowing out of the second passage 126.

[0073] In the embodiments of the present application, the first passage 125 is arranged on the outer circumferential side of the second passage 126. In this way, the contact area between the first passage 125 and the second passage 126 can be increased, that is, the area for exchanging heat between the composition contained in the first passage 125 and the cooling medium contained in the second passage 126 is increased, thereby improving the condensing effect.

[0074] Referring to Figure 1 and Figure 2In some possible embodiments of the present application, the liquid recovery tank 13 comprises a liquid level indicator for indicating the storage amount of the liquid synthetic composition in the liquid recovery tank 13; and / or the liquid recovery tank 13 comprises a sampling valve 131 for connecting or isolating the liquid recovery tank 13 from the outside.

[0075] In some possible embodiments of the present application, the liquid level indicator is used for monitoring and displaying the storage amount of the liquid synthetic composition in the liquid recovery tank 13. When the liquid level of the liquid synthetic composition reaches a preset upper limit or lower limit, the liquid level indicator can trigger an alarm to remind the operator to handle in time.

[0076] In some possible embodiments of the present application, the sampling valve 131 is used for connecting or isolating the liquid recovery tank 13 from the outside, so as to sample and detect the liquid synthetic composition. When the sampling valve 131 is opened, the liquid synthetic composition can flow out through the sampling valve 131 for the operator to collect a sample for detection. When the sampling valve 131 is closed, the liquid recovery tank 13 is completely isolated from the outside, reducing the leakage of the liquid synthetic composition or the entry of external pollutants.

[0077] The embodiment of the present application provides a condensation sampling device, in the first circulation loop 1, the preset raw material and inert gas enter the buffer tank 16 through the feed port, under the action of the circulating pump 15, the preset raw material and inert gas enter the synthesis chamber 11 through the first valve 17 and the main pipeline 4, the preset raw material reacts in the synthesis chamber 11, and gaseous synthesis is generated after reaction. In the condensation sampling device, the mixed gas is composed of gaseous synthesis, inert gas and incomplete reaction of the preset raw material, the mixed gas enters the condensation assembly 12, the gaseous synthesis is condensed to form liquid synthesis, the liquid synthesis flows out from the outlet 123 of the condensation assembly 12 through gravity or pressure, and flows into the liquid recovery tank 13 through the first branch pipeline L1. The synthesis that is not condensed in the condensation assembly 12 enters the gas-liquid separator 14 together with the inert gas and the incomplete reaction of the preset raw material. The gas-liquid separator 14 separates the liquid synthesis from the incomplete condensation synthesis, the separated liquid synthesis flows into the liquid recovery tank 13 through the second branch pipeline L2, and the separated inert gas and incomplete reaction of the preset raw material enter the buffer tank 16 under the action of the circulating pump 15, and can further enter the synthesis chamber 11 to continue synthesis. The storage amount of the liquid synthesis in the liquid recovery tank 13 can be observed through the liquid level indicator, the sampling valve 131 is opened, the sample of the liquid synthesis is taken out, and analysis is carried out. In the second circulation loop 3, the cooling medium flows in the second circulation loop 3, when the cooling medium flows into the heat exchanger 31, the heat exchanger 31 can absorb the heat of the cooling medium, and the temperature of the cooling medium is reduced; when the cooled cooling medium flows into the second channel 126, the cooling medium in the second channel 126 can absorb the heat of the synthesis in the first channel 125, so that the synthesis is condensed, the temperature of the cooling medium is increased, and the cooling medium with the increased temperature continues to flow into the heat exchanger 31 to be cooled. The cooling medium circulates in the second circulation loop 3 in this way.

[0078] Reference Figure 4 The embodiment of the present application provides a condensation sampling method, which is applied to the condensation sampling device in any one of the above, and the first circulation loop 1 further comprises a buffer tank 16, a circulating pump 15, and first and second valves 17 and 18 arranged at two ends of the buffer tank 16.

[0079] The method comprises the following steps.

[0080] S10, the first valve 17 and the second valve 18 are closed, and the buffer tank 16 is vacuumized;

[0081] S20, a preset volume of hydrogen is injected into the buffer tank 16;

[0082] S30, the first valve 17 and the second valve 18 are opened, and helium is injected into the buffer tank 16;

[0083] S40, the pressure in the buffer tank 16 is determined to be positive, and the circulating pump 15 is opened.

[0084] S50, injecting a preset volume of oxygen into the buffer tank 16.

[0085] In the embodiment of the present application, inert gas is used to clean the inside of the cooling sampling device before the reaction is carried out by the cooling sampling device, so as to remove impurities or residual substances in the cooling sampling device.

[0086] In the embodiment of the present application, hydrogen and oxygen are preset raw materials, and the ratio between hydrogen and oxygen injected into the buffer tank 16 can be 2:1 according to the requirements of the reaction. Helium is an inert gas and does not participate in the reaction. By adjusting the amount of inert gas filled, the volume change caused by gas reaction or condensation can be compensated, and the pressure in the condensation sampling device can be maintained stable. At the same time, the inert gas acts as a diluent, which can reduce the flammability of hydrogen-oxygen mixed gas and reduce the risk of deflagration in the synthesis chamber 11 or pipeline.

[0087] Referring to Figure 5 Before the step of closing the first valve 17 and the second valve 18 in S10 and the step of vacuumizing the buffer tank 16, the condensation sampling method further comprises:

[0088] S01, starting the heat exchanger 31 to reduce the temperature of the cooling medium;

[0089] In the embodiment of the present application, the temperature of the cooling medium after being reduced by the heat exchanger 31 can be controlled according to the requirements of the condensation sampling device. The temperature of the cooled cooling medium can be 3°C (degrees Celsius), 4°C, 5°C, etc. For example, the cooling medium can be first reduced to 5°C (degrees Celsius).

[0090] Referring to Figure 5 After the step of injecting a preset volume of oxygen into the buffer tank 16 in S50, the condensation sampling method further comprises:

[0091] S60, observing the liquid level gauge, and opening the sampling valve 131 to take samples after the reaction is completed;

[0092] S70, analyzing the sampled samples.

[0093] In the embodiment of the present application, the amount of liquid synthetic product is related to the amount of preset raw material injected into the condensation sampling device. For example, about 3.5 milliliters of liquid can be generated by injecting 5 liters of hydrogen.

[0094] The method for condensing sampling provided by the embodiment of the present application closes the first valve 17 and the second valve 18, and vacuums the buffer tank 16, so as to inject a preset volume of hydrogen into the buffer tank 16. After the hydrogen is completely injected into the buffer tank 16, the first valve 17 and the second valve 18 are slowly opened, and at the same time, helium is injected into the buffer tank 16, and the air pressure in the condensing sampling device is observed through pressure detection in the buffer tank 16. When the air pressure in the whole condensing sampling device is positive pressure, for example, the air pressure in the whole condensing sampling device is about 0.3 Mpa (mega pascal), the circulating pump 15 is opened, so as to further stabilize the air pressure in the condensing sampling device. A preset volume of oxygen is injected into the buffer tank 16, so that the oxygen and the hydrogen react in the synthesis chamber 11, part of the synthesis product is condensed into liquid synthesis product by the condensing assembly 12 and flows into the liquid recovery tank 13, and another part of the synthesis product is separated into liquid synthesis product by the gas-liquid separator 14 and flows into the liquid recovery tank 13. The hydrogen and the oxygen which are not completely reacted can continue to circulate to the synthesis chamber 11 to react after being separated by the gas-liquid separator 14. The liquid level gauge is observed, after the reaction is completed, the sampling valve 131 is opened, the liquid synthesis product sample is taken out, and is analyzed.

[0095] The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments. The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation which is made by using the content of the specification and the drawings, or is directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A condensing sampling device, characterized by, The first circulation loop comprises: a synthesis chamber for synthesizing preset raw materials into a synthesis product; a condensing assembly arranged downstream of the synthesis chamber, the condensing assembly being configured to condense part of the gaseous synthesis product into a liquid synthesis product; a liquid recovery tank connected to the condensing assembly via a first bypass pipeline configured to guide the condensed liquid synthesis product into the liquid recovery tank, the liquid recovery tank being configured to store the liquid synthesis product; a gas-liquid separator arranged downstream of the condensing assembly and connected to the liquid recovery tank via a second bypass pipeline configured to separate the liquid synthesis product from the synthesis product passing through the condensing assembly and guide the separated liquid synthesis product into the liquid recovery tank; a pressure stabilizing pipeline connecting a first interface of the condensing assembly and the liquid recovery tank, the condensing assembly further comprising an inlet connected to the synthesis chamber, an outlet connected to the liquid recovery tank, and the first interface arranged between the inlet and the outlet and spaced apart from the outlet.

2. The condensing sampling device of claim 1, wherein, The condensing assembly further comprises a second interface connected to the gas-liquid separator, the second interface being arranged between the first interface and the outlet.

3. The condensing sampling device of claim 1, wherein, The first circulation loop further comprises a circulating pump arranged between the synthesis chamber and the gas-liquid separator, the circulating pump being configured to drive the synthesis product to flow through the synthesis chamber, the condensing assembly, and the gas-liquid separator in sequence.

4. The condensing sampling device of claim 3, wherein, The first circulation loop further comprises a buffer tank arranged between the synthesis chamber and the circulating pump, the buffer tank being provided with an inlet configured to allow the preset raw materials to enter the buffer tank.

5. The condensing sampling device of claim 4, wherein, A first valve is arranged between the buffer tank and the synthesis chamber, the first valve being configured to connect or isolate the buffer tank and the synthesis chamber; and a second valve is arranged between the buffer tank and the circulating pump, the second valve being configured to connect or isolate the buffer tank and the circulating pump.

6. The condensing sampling device according to any one of claims 1 to 5, wherein, The second circulation loop comprises a heat exchanger configured to provide a cooling medium flowing through the second circulation loop, and the second circulation loop exchanges heat with the first circulation loop via the condensing assembly.

7. The condensing sampling device of claim 6, wherein, The condensing assembly comprises a first passage and a second passage, the first passage being in communication with the first circulation loop, the second passage being in communication with the second circulation loop, and the first passage being sleeved on the outer circumferential side of the second passage.

8. The condensing sampling device of claim 6, wherein, The liquid recovery tank comprises a liquid level indicator configured to show the storage amount of the liquid synthesis product in the liquid recovery tank; and / or The liquid recovery tank comprises a sampling valve configured to connect or isolate the liquid recovery tank with the outside world.

9. A method of condensing a sample, characterized by, The first circulation loop further comprises a buffer tank, a circulating pump, and first and second valves arranged at two ends of the buffer tank. The method comprises: closing the first valve and the second valve, and vacuumizing the buffer tank; injecting a preset volume of hydrogen into the buffer tank; opening the first valve and the second valve, and injecting helium into the buffer tank; determining that the pressure in the buffer tank is positive, and opening the circulating pump; injecting a preset volume of oxygen into the buffer tank.

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