Device and method for research of low-dosage inhibitor of natural gas hydrate
A technology for natural gas and inhibitors, which is applied in measurement devices, chemical method analysis, gas fuels, etc., can solve the problems of inaccurate evaluation of low-dose inhibitors, and achieve the effect of intuitive research results.
Active Publication Date: 2013-04-24
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology
However, the existing simulators are difficult to simulate the complex conditions of actual operation, resulting in inaccurate evaluation of low-dose inhibitors
Method used
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[0031] The preferred embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0032] attached figure 1 The symbols in are represented as follows:
[0033] RTD temperature sensor; P pressure sensor; DP differential pressure gauge;
[0034] 1. Gas source; 2. Humidification device; 3. Booster pump; 4. Dew point meter; 5. Flowmeter; 6. Gas storage tank; 7. Magnetic circulation pump; 11 syringe pump; 12 cryogenic chamber;
[0035] V1 pressure reducing valve; V2-V21 are ordinary valves.
[0036] like figure 1 As shown, the low-dose inhibitor research device for natural gas hydrate of the present invention, in this embodiment, is designed to withstand a maximum pressure of 15 MPa.
[0037] The gas supply system is mainly composed of gas source 1, humidifier 2 and booster pump 3. The gas source 1 uses a gas cylinder. The gas comes out of the gas cylinder and enters the humidification device 2. After adjusting...
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Abstract
The invention discloses a device for the research of a low-dosage inhibitor of a natural gas hydrate. The device comprises a gas supply system, a circulating loop system, an inhibitor adding system, a measuring and data acquiring system and a cooling system, wherein the gas supply system is used for introducing natural gas which reaches a certain pressure and humidity into the circulating loop system; the circulating loop system is used for circulating natural gas in a pipeline and simulating the generation of the natural gas hydrate in the pipeline; the inhibitor adding system is used for injecting the low-dosage inhibitor into the circulating loop system; the measuring and data acquiring system is used for measuring and acquiring data in an experiment process; and the cooling system is used for lowering the temperature of the circulating loop system. Due to the adoption of the device and a method in the scheme, the flowing situations of the hydrate under different working conditionssuch as horizontal pipelines, depressed pipe sections, delivery stop, restart after delivery stop and the like can be simulated, the low-dosage inhibitor of the natural hydrate is researched, accurate evaluation can be provided, and the acting effect of an experiment is approximately accordant with the using effect.
Description
technical field [0001] The invention relates to a device and method for research on low-dose inhibitors of natural gas hydrates. Background technique [0002] Various low-boiling hydrocarbons such as methane, ethane, propane and carbon dioxide, hydrogen sulfide, etc. are present in natural gas and other petroleum fluids, and water is also mixed with these petroleum fluid components in varying amounts. At low temperature and high pressure, when such petroleum fluid components or other hydrate formers are mixed with water, gas hydrates can be formed, which are clathrate crystals formed by water and small molecular gases such as light hydrocarbons. During the exploitation and transportation of natural gas and other petroleum fluids, these clathrate hydrates may block pipelines and bring difficulties to the exploitation or transportation of oil and natural gas. For example, under a pressure of about 1 MPa, ethane can form hydrates at a temperature lower than 4°C, and at a press...
Claims
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IPC IPC(8): G01N31/00C10L3/10
Inventor 唐翠萍梁德青
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI