An experimental device for evaluating the performance of supersonic cyclone separators

Abstract

The present invention discloses an experimental device for evaluating the performance of a supersonic cyclone separator, comprising a compressor, an ejector, a mixer, a gas storage tank, a supersonic cyclone separator, and a gas cylinder group; the outlet of the compressor is connected to the high-speed flow inlet of the ejector, and the outlet of the gas cylinder group is connected to the low-speed flow inlet of the ejector; the outlet of the ejector is connected to the inlet of the mixer, the outlet of the mixer is connected to the inlet of the gas storage tank, the outlet of the gas storage tank is connected to the inlet of the supersonic cyclone separator, the gas phase outlet of the supersonic cyclone separator is connected to the gas phase pipeline, and the liquid phase outlet of the supersonic cyclone separator is connected to the liquid phase pipeline. The present invention provides a stable and reliable test system, and the setting of the gas cylinder group can add CO2 to the compressed air to simulate the presence of CO2 gas in natural gas, so as to test the separation and removal effect of the supersonic cyclone separator on CO2 impurity gas.

Description

Technical Field

[0001] The invention belongs to the technical field of separation, and in particular relates to an experimental device for evaluating the performance of a supersonic cyclone separator. Background Art

[0002] The natural gas extracted from the natural gas field contains a large amount of impurities such as water vapor and CO2, which must be purified and separated. Because the presence of impurities such as water vapor and CO2 will reduce the calorific value of natural gas and reduce the pipeline transportation capacity, there are also risks such as blocking the natural gas transportation pipeline and corroding equipment. Therefore, removing impurities such as water vapor and CO2 is the key to natural gas purification.

[0003] At present, a new type of natural gas purification and separation device for removing impurities such as water vapor and CO2 is gradually being used, which is the supersonic cyclone separator. The supersonic cyclone separator is mainly composed of Laval nozzle, supersonic rectifier, cyclone, diffuser and other components. The incoming gas will produce a low temperature and low pressure environment through the Laval nozzle, so that the condensable components in the natural gas will condense, and the condensed droplets will be separated by the huge centrifugal force generated by the cyclone. It has the advantages of compact and light structure, no moving parts, and support for unattended operation. It is more suitable for unmanned operations such as oil and gas fields at sea, deserts and remote areas. In addition, its advantages of being closed and leak-free and not requiring chemical reagents give it a competitive advantage of safety, reliability, low carbon and environmental protection in the natural gas purification and separation process.

[0004] In the process of studying the separation of supersonic cyclone separators, it is necessary to evaluate the separation performance of various impurities such as water vapor and CO2 as a basis for optimizing the structure of the separator, and the evaluation of the separation performance requires continuous experimental research on the supersonic cyclone separator. At present, most supersonic cyclone separation systems are used to evaluate their separation effect on water vapor, such as Chinese patent CN104056497A. Therefore, it is urgent to develop an supersonic cyclone separation experimental system for CO2 separation performance evaluation. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide an experimental device for evaluating the performance of a supersonic cyclone separator.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] An experimental device for evaluating the performance of a supersonic cyclone separator comprises a compressor, an ejector, a mixer, a gas storage tank, a supersonic cyclone separator, and a gas cylinder group;

[0008] The outlet of the compressor is connected to the high-speed flow inlet of the ejector, and the outlet of the gas cylinder group is connected to the low-speed flow inlet of the ejector; the outlet of the ejector is connected to the inlet of the mixer, the outlet of the mixer is connected to the inlet of the gas storage tank, the outlet of the gas storage tank is connected to the inlet of the supersonic cyclone separator, the gas phase outlet of the supersonic cyclone separator is connected to the gas phase pipeline, and the liquid phase outlet of the supersonic cyclone separator is connected to the liquid phase pipeline;

[0009] The inlet pipeline of the supersonic cyclone separator is provided with a first pressure sensor, a first temperature sensor, a first gas vortex flowmeter and a first handheld pump-suction CO2 detector for measuring the CO2 content in the inlet gas of the supersonic cyclone separator in sequence along the medium flow direction;

[0010] The gas phase pipeline is provided with a second handheld pump-sucking CO2 detector, a second gas vortex flowmeter, a second pressure sensor, and a second temperature sensor in sequence along the medium flow direction for measuring the CO2 content in the gas at the gas phase outlet of the supersonic cyclone separator;

[0011] A third pressure sensor and a third temperature sensor are sequentially arranged on the liquid phase pipeline along the medium flow direction;

[0012] The first pressure sensor, the first temperature sensor, the first handheld pump-sucked CO2 detector, the first gas vortex flowmeter, the second handheld pump-sucked CO2 detector, the second gas vortex flowmeter, the second pressure sensor, the second temperature sensor, the third pressure sensor, and the third temperature sensor are all connected to the data acquisition system.

[0013] Preferably, a first ball valve is provided at the outlet of the compressor.

[0014] Preferably, the inlet of the ejector is also connected to an auxiliary compressor, and the outlet of the auxiliary compressor is provided with a second ball valve.

[0015] Preferably, a first filter is provided on the high-speed flow inlet pipeline of the ejector.

[0016] Preferably, a safety valve is provided on the outlet pipeline of the ejector.

[0017] Preferably, a first manual regulating valve is provided on the pipeline between the gas cylinder group and the ejector.

[0018] Preferably, a second filter and a third filter are sequentially arranged on the outlet pipeline of the gas storage tank along the medium flow direction; a self-operated pressure regulating valve is arranged on the pipeline between the third filter and the first pressure sensor, and a second manual regulating valve is connected in parallel at both ends of the self-operated pressure regulating valve.

[0019] Preferably, silencers are provided at the ends of the gas phase pipeline and the liquid phase pipeline.

[0020] Preferably, a third manual regulating valve is provided at the rear end of the second temperature sensor on the gas phase pipeline; and a fourth manual regulating valve is provided at the rear end of the third temperature sensor on the liquid phase pipeline.

[0021] The beneficial effects of the present invention are:

[0022] The experimental device for evaluating the performance of an ultrasonic cyclone separator of the present invention provides a set of stable and reliable testing systems. The arrangement of a gas cylinder group can add CO2 to compressed air to simulate the presence of CO2 gas in natural gas, so as to test the separation and removal effect of the ultrasonic cyclone separator on CO2 gas in natural gas; according to the inlet flow detected by a first gas vortex flowmeter at the inlet of the ultrasonic cyclone separator, the inlet temperature detected by a first temperature sensor, the inlet pressure detected by a first pressure sensor, the gas phase outlet flow detected by a second gas vortex flowmeter at the gas phase outlet of the ultrasonic cyclone separator, the gas phase outlet temperature detected by a second temperature sensor, the gas phase outlet pressure detected by a second pressure sensor, the liquid phase outlet temperature detected by a third temperature sensor at the liquid phase outlet of the ultrasonic cyclone separator, and the liquid phase outlet pressure detected by a third pressure sensor, the working condition of the entire experimental system is monitored; the CO2 content in the medium at the inlet and gas phase outlet of the ultrasonic cyclone separator is detected by a handheld pump suction CO2 detector, and the change in CO2 content is used as a basis for evaluating the CO2 separation performance of the ultrasonic cyclone separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0024] Figure 1 It is a schematic diagram of the flow of an experimental device for evaluating the performance of a supersonic cyclone separator according to the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of an experimental device for evaluating the performance of a supersonic cyclone separator according to the present invention;

[0026] in:

[0027] 1- compressor, 101- first ball valve, 2- ejector, 201- first filter, 202- safety valve, 3- mixer, 4- gas storage tank, 401- second filter, 402- third filter, 403- self-operated pressure regulating valve, 404- second manual regulating valve;

[0028] 5-supersonic cyclone separator, 501-first pressure sensor, 502-first temperature sensor, 503-first hand-held pump-sucked CO2 detector, 5031-first gas vortex flowmeter, 504-second pressure sensor, 505-second temperature sensor, 506-second hand-held pump-sucked CO2 detector, 5061-second gas vortex flowmeter, 507-third pressure sensor, 508-third temperature sensor, 509-third manual regulating valve, 510-fourth manual regulating valve;

[0029] 6-gas cylinder group, 601-first manual regulating valve, 7-gas phase pipeline, 8-liquid phase pipeline, 9-auxiliary compressor, 901-second ball valve, 10-muffler, 11-data acquisition system. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0033] In the present invention, terms such as "connected" and "connection" should be understood in a broad sense, indicating that the connection can be fixed, integral or detachable; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meaning of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] like Figure 1-2As shown, an experimental device for evaluating the performance of an ultra-sonic cyclone separator comprises a compressor 1, an ejector 2, a mixer 3, a gas storage tank 4, an ultra-sonic cyclone separator 5, and a gas cylinder group 6; the compressor 1 in the device has a large power and can compress the gas to 4MPa, thereby widening the working conditions of the ultra-sonic cyclone separator 5; the gas cylinder group 6 in the device is used to add CO2 to the compressed air to simulate the presence of impurity gas CO2 in natural gas, so as to test the separation and removal effect of the ultra-sonic cyclone separator on CO2; a mixer 3 is provided in the device, the purpose of which is to more fully mix the compressed air with the gas in the gas cylinder group 6; the device is provided with a gas storage tank 4, the purpose of which is to provide a stable airflow for the downstream equipment, thereby improving the measurement accuracy of pressure, temperature and flow;

[0036] The outlet of the compressor 1 is connected to the high-speed flow inlet of the ejector 2, and the outlet of the gas cylinder group 6 is connected to the low-speed flow inlet of the ejector 2; the outlet of the ejector 2 is connected to the inlet of the mixer 3, the outlet of the mixer 3 is connected to the inlet of the gas storage tank 4, the outlet of the gas storage tank 4 is connected to the inlet of the supersonic cyclone separator 5, the gas phase outlet of the supersonic cyclone separator 5 is connected to the gas phase pipeline 7, and the liquid phase outlet of the supersonic cyclone separator 5 is connected to the liquid phase pipeline 8;

[0037] The inlet pipeline of the supersonic cyclone separator 5 is provided with a first pressure sensor 501, a first temperature sensor 502, a first gas vortex flowmeter 5031 and a first handheld pump-suction CO2 detector 503 for measuring the CO2 content in the inlet gas of the supersonic cyclone separator 5 in sequence along the medium flow direction;

[0038] The gas phase pipeline is provided with a second handheld pump CO2 detector 506, a second gas vortex flowmeter 5061, a second pressure sensor 504, and a second temperature sensor 505 in sequence along the medium flow direction for measuring the CO2 content in the gas at the gas phase outlet of the supersonic cyclone separator 5;

[0039] A third pressure sensor 507 and a third temperature sensor 508 are sequentially arranged on the liquid phase pipeline along the medium flow direction;

[0040] The first pressure sensor 501, the first temperature sensor 502, the first handheld pump-sucked CO2 detector 503, the first gas vortex flowmeter 5031, the second handheld pump-sucked CO2 detector 506, the second gas vortex flowmeter 5061, the second pressure sensor 504, the second temperature sensor 505, the third pressure sensor 507, and the third temperature sensor 508 are all connected to the data acquisition system 11;

[0041] The data acquisition system 11 is a data acquisition system based on Labview software. The data measured by the pressure sensor, temperature sensor, gas vortex flowmeter at the inlet and gas phase outlet of the supersonic cyclone separator 5 and the temperature sensor and pressure sensor at the liquid phase outlet are transmitted to the Labview software through the data line, so as to monitor the pressure, temperature and flow of the entire experimental system and achieve the optimal working condition of the supersonic cyclone separator 5.

[0042] Preferably, a first ball valve 101 is provided at the outlet of the compressor 1 for controlling the gas flow in the pipeline.

[0043] Preferably, the inlet of the ejector 2 is also connected to the auxiliary compressor 9, and the outlet of the auxiliary compressor 9 is provided with a second ball valve 901; wherein the compressor 1 and the auxiliary compressor 9 can serve as backup for each other on the one hand, and can also be used simultaneously on the other hand to increase the gas flow rate, thereby broadening the range of experimental working conditions of the supersonic cyclone separator 5.

[0044] Preferably, a first filter 201 is provided on the high-speed flow inlet pipeline of the ejector 2. The first filter 201 is installed before the ejector 2 to filter solid impurities in the gas, thereby avoiding damage to the ejector 2 and the devices behind it.

[0045] Preferably, a safety valve 202 is provided on the outlet pipeline of the ejector 2. When the pressure in the pipeline is too high, the safety valve 202 will open due to the high pressure in the pipeline to release the pressure in the pipeline, thereby ensuring the safe operation of the entire experimental device.

[0046] Preferably, a first manual regulating valve 601 is provided on the pipeline between the gas cylinder group 6 and the ejector 2 .

[0047] Preferably, a second filter 401 and a third filter 402 are sequentially arranged on the outlet pipeline of the gas storage tank 4 along the medium flow direction; a self-operated pressure regulating valve 403 is arranged on the pipeline between the third filter 402 and the first pressure sensor 501 to ensure that the pipeline pressure behind the self-operated pressure regulating valve 403 fluctuates within a certain range, so that the pressure at the inlet of the supersonic cyclone separator 5 is stable, and the supersonic cyclone separator 5 reaches the best working condition; a second manual regulating valve 404 is connected in parallel at both ends of the self-operated pressure regulating valve 403. When the self-operated pressure regulating valve 403 fails, the second manual regulating valve 404 can be used to ensure that the pipeline pressure behind the second manual regulating valve 404 fluctuates within a certain range, so that the pressure at the inlet of the supersonic cyclone separator 5 is stable, and the supersonic cyclone separator 5 reaches the best working condition.

[0048] Preferably, silencers 10 are provided at the ends of the gas phase pipeline 7 and the liquid phase pipeline 8, the purpose of which is to reduce the noise generated by the ultra-high-speed flow of the gas.

[0049] Preferably, a third manual regulating valve 509 is provided at the rear end of the second temperature sensor 505 on the gas phase pipeline 7 ; and a fourth manual regulating valve 510 is provided at the rear end of the third temperature sensor 508 on the liquid phase pipeline 8 .

[0050] An experimental device for evaluating the performance of a supersonic cyclone separator, the specific implementation of which is as follows:

[0051] When using this experimental device, the air is compressed and pressurized by the compressor 1 and then enters the first filter 201 through the first ball valve 101 to filter out solid impurities harmful to the equipment contained in the gas. Then the gas enters the ejector 2. At the same time, due to the pressure difference in the ejector 2, the gas in the gas cylinder group 6 enters the ejector 2 through the first manual regulating valve 601 to be preliminarily mixed with the compressed air.

[0052] The preliminary mixed gas enters the mixer 3 for full mixing, and the fully mixed gas enters the gas storage tank 4 for buffering to provide stable flow for the downstream equipment; then the gas is filtered again through the second filter 401 and the third filter 402, and after filtration, it enters the supersonic cyclone separator 5 for expansion condensation separation; the separated liquid phase (condensed CO2 droplets) and a small amount of slip gas are discharged from the supersonic cyclone separator 5 from the drain port, and then discharged from the experimental device through the liquid phase pipeline 8 and the silencer 10; the separated pure gas is discharged from the supersonic cyclone separator 5 through the exhaust port, and finally discharged from the experimental device through the gas phase pipeline 7 and the silencer 10.

[0053] By installing a pressure sensor, a temperature sensor, a gas vortex flowmeter and a handheld pump-suction CO2 detector on the inlet pipeline and the outlet gas phase pipeline 7 of the supersonic cyclone separator 5, the pressure, temperature, flow rate and CO2 content of the medium at the inlet and gas phase outlet of the supersonic cyclone separator 5 are detected; by installing a pressure sensor and a temperature sensor on the outlet liquid phase pipeline 8 of the supersonic cyclone separator 5, the pressure and temperature of the liquid phase outlet medium of the supersonic cyclone separator 5 are detected.

[0054] At the same time, according to the inlet flow detected by the first gas vortex flowmeter 5031 at the inlet of the supersonic cyclone separator 5, the inlet temperature detected by the first temperature sensor 502, the inlet pressure detected by the first pressure sensor 501, the gas phase outlet flow detected by the second gas vortex flowmeter 5061 at the gas phase outlet of the supersonic cyclone separator 5, the gas phase outlet temperature detected by the second temperature sensor 505, the gas phase outlet pressure detected by the second pressure sensor 504, and the liquid phase outlet temperature detected by the third temperature sensor 508 at the liquid phase outlet of the supersonic cyclone separator 5, and the liquid phase outlet pressure detected by the third pressure sensor 507, the operating condition of the entire experimental system is monitored.

[0055] According to the CO2 content contained in the inlet gas detected by the first handheld pump CO2 detector 503 and the CO2 content contained in the gas phase outlet gas detected by the second handheld pump CO2 detector 506, the change in CO2 content is used as the basis for evaluating the CO2 separation performance of the supersonic cyclone separator 5.

[0056] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the protection scope of the present invention.

Claims

1. An experimental device for evaluating the performance of a supersonic cyclone separator, characterized in that: Including compressor, ejector, mixer, gas storage tank, supersonic cyclone separator, gas cylinder group; The outlet of the compressor is connected to the high-speed flow inlet of the ejector, the outlet of the gas cylinder group is connected to the low-speed flow inlet of the ejector, and the arrangement of the gas cylinder group can add CO2 to the compressed air; the outlet of the ejector is connected to the inlet of the mixer, the outlet of the mixer is connected to the inlet of the gas storage tank, the outlet of the gas storage tank is connected to the inlet of the supersonic cyclone separator, the gas phase outlet of the supersonic cyclone separator is connected to the gas phase pipeline, and the liquid phase outlet of the supersonic cyclone separator is connected to the liquid phase pipeline; The inlet pipeline of the supersonic cyclone separator is provided with a first pressure sensor, a first temperature sensor, a first gas vortex flowmeter and a first handheld pump-suction CO2 detector for measuring the CO2 content in the inlet gas of the supersonic cyclone separator in sequence along the medium flow direction; The gas phase pipeline is provided with a second handheld pump-sucking CO2 detector, a second gas vortex flowmeter, a second pressure sensor, and a second temperature sensor in sequence along the medium flow direction for measuring the CO2 content in the gas at the gas phase outlet of the supersonic cyclone separator; A third pressure sensor and a third temperature sensor are sequentially arranged on the liquid phase pipeline along the medium flow direction; The first pressure sensor, the first temperature sensor, the first handheld pump-sucked CO2 detector, the first gas vortex flowmeter, the second handheld pump-sucked CO2 detector, the second gas vortex flowmeter, the second pressure sensor, the second temperature sensor, the third pressure sensor, and the third temperature sensor are all connected to the data acquisition system.

2. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: The outlet of the compressor is provided with a first ball valve.

3. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: The inlet of the ejector is also connected to an auxiliary compressor, and the outlet of the auxiliary compressor is provided with a second ball valve.

4. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: A first filter is arranged on the high-speed flow inlet pipeline of the ejector.

5. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: A safety valve is arranged on the outlet pipeline of the ejector.

6. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: A first manual regulating valve is arranged on the pipeline between the gas cylinder group and the ejector.

7. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: A second filter and a third filter are sequentially arranged on the outlet pipeline of the gas storage tank along the medium flow direction; a self-operated pressure regulating valve is arranged on the pipeline between the third filter and the first pressure sensor, and a second manual regulating valve is connected in parallel at both ends of the self-operated pressure regulating valve.

8. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: The ends of the gas phase pipeline and the ends of the liquid phase pipeline are both provided with silencers.

9. The experimental device for evaluating the performance of a supersonic cyclone separator according to claim 1, characterized in that: A third manual regulating valve is arranged at the rear end of the second temperature sensor on the gas phase pipeline; and a fourth manual regulating valve is arranged at the rear end of the third temperature sensor on the liquid phase pipeline.

Images