CN206457467U - Movable skid-mounted natual gas dehydrate unit - Google Patents

Abstract

The utility model provides a kind of movable skid-mounted natual gas dehydrate unit.The movable skid-mounted natual gas dehydrate unit, including：Triethylene glycol hypergravity absorption plant, is connected with wet gas pipe network, for carrying out dewater treatment to natural gas by triethylene glycol；Hypergravity triethylene glycol regenerating unit, the triethylene glycol outlet with triethylene glycol hypergravity absorption plant, for carrying out regeneration treatment to the triethylene glycol after water suction.By to the moisture absorption in natural gas, the regeneration of absorbent and the circulation of absorbent, reach and almost removed moisture in natural gas, reduction absorbent usage amount completely and save the energy and the technique effect of installation area, and then there is provided a kind of movable skid-mounted natual gas dehydrate unit.

Description

Movable skid-mounted natural gas dehydration device

technical field

The utility model relates to the field of natural gas purification treatment, in particular to a movable skid-mounted natural gas dehydration device.

Background technique

At present, in order to reduce the serious pollution of the atmospheric environment caused by coal-fired boilers and automobile emissions, my country has vigorously developed coal-to-gas projects and automobile clean energy in recent years. With the completion of main gas pipelines such as the West-East Gas Pipeline, the Second and Third West-East Gas Pipelines, the Shaanxi-Beijing Line, the Zhongwu Line, and the Sichuan-East Gas Pipeline, a large number of coal-fired boilers and even power plants have been replaced by natural gas as fuel. Gas stations and refueling mother stations have been vigorously developed in cities along the line.

Natural gas comes from the ground, and the natural gas flowing out of the wellhead is almost saturated with gas-phase water, and even carries a certain amount of liquid water. The presence of moisture in natural gas often causes serious consequences: natural gas containing CO2 and H2S forms acid in the presence of water and corrodes pipelines and equipment; under certain conditions, natural gas hydrate is formed to block valves, pipelines and equipment; Reduce pipeline transportation capacity, resulting in unnecessary power consumption. The presence of moisture in natural gas is a very unfavorable thing, therefore, the requirement for dehydration is more stringent.

One of the most critical equipment in natural gas refueling stations and refueling mother stations is natural gas deep dehydration device. It can effectively deep dehydrate natural gas, and the performance of dehydration directly affects the filling speed of natural gas filling machine and the driving performance of natural gas vehicles, as well as whether there is "ice blockage" in the gas storage system and gas sales system, and It has a good protective effect on the gas storage tank of natural gas vehicles.

Natural gas dehydration methods generally include low temperature method, solvent absorption method, solid adsorption method, chemical reaction method and membrane separation method. Low-temperature dehydration is achieved by using high-pressure natural gas to expand and cool down or using a gas wave machine to expand and cool down. This process is suitable for high-pressure natural gas; for low-pressure natural gas, it must be pressurized if it is to be used, which affects the economy of the process. . Solvent absorption method and solid adsorption method are currently widely used in the natural gas industry. Among them, wellhead dehydration is the most fundamental dehydration method, and solvent absorption method is the best choice for wellhead natural gas dehydration, among which glycol is the first choice of solvent.

The glycols that have been successfully used in the natural gas dehydration industry are: ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TEG) and tetraethylene glycol (TREG). The earliest glycol used for natural gas dehydration is diethylene glycol. Due to the limitation of regeneration temperature, the mass fraction of lean liquid is generally about 95%, and the dew point drop is low; while triethylene glycol is easy to regenerate, and the mass fraction of lean liquid can reach 98%. ~99%, has a larger dew point drop, and lower operating costs, so it has been widely used.

Recently, there have been mature natural gas triethylene glycol dehydration devices, but the use of absorption towers and regeneration towers is bulky and requires a relatively large amount of triethylene glycol. It is difficult to form a skid-mounted device, which is only suitable for in-situ construction and cannot be moved.

No effective solution has been proposed so far for the dehydration problem of mobile skid-mounted TEG natural gas.

Utility model content

The main purpose of the utility model is to provide a movable skid-mounted natural gas dehydration device to solve the problem that the natural gas triethylene glycol dehydration device is difficult to move and skid-mount in the prior art.

In order to achieve the above object, according to one aspect of the utility model, a movable skid-mounted natural gas dehydration device is provided, including: a triethylene glycol supergravity absorption device, connected with a wet natural gas pipeline network, for The natural gas is dehydrated; the supergravity triethylene glycol regeneration device is connected with the triethylene glycol outlet of the triethylene glycol supergravity absorption device, and is used to regenerate the triethylene glycol after water absorption.

Further, the triethylene glycol supergravity absorption device includes: a coalescing filter, which communicates with the wet natural gas pipeline network, and is used to separate free liquid droplets and solid impurities in natural gas; and a triethylene glycol supergravity machine, which is connected with the coalescence filter Connected, used to absorb moisture in natural gas through triethylene glycol to obtain natural gas and triethylene glycol-rich liquid.

Further, the high-gravity triethylene glycol regeneration device includes: a flash tank, communicated with the triethylene glycol high-gravity machine, used for flash separation to separate the hydrocarbon gas dissolved in the rich triethylene glycol liquid; filter group, connected with the flash tank The tank is connected to filter impurities in the triethylene glycol-rich liquid; the heat exchanger group is connected to the filter group to heat the triethylene glycol-rich liquid; the regenerative supergravity machine is connected to the filter group to separate Triethylene glycol and water vapor to obtain triethylene glycol-lean liquid and regeneration tail gas.

Further, the filter set includes: a pre-filter, communicated with the flash tank, used to filter some heavy hydrocarbons in the triethylene glycol-rich liquid and degradation substances during triethylene glycol regeneration; a post-filter, communicated with the pre-filter , used to remove solid impurities above 5 μm in triethylene glycol-rich liquid.

Further, the heat exchanger group includes: a poor-rich liquid heat exchanger, which communicates with the filter group, and is used to exchange heat between the rich triethylene glycol liquid and the poor triethylene glycol liquid; The poor-rich liquid heat exchanger is connected to heat the rich triethylene glycol liquid.

Further, the high-gravity triethylene glycol regeneration device also includes: a gas-liquid heat exchanger, which is respectively connected to the lean-rich liquid heat exchanger and the triethylene glycol high-gravity machine, and is used to exchange heat between natural gas and triethylene glycol-poor liquid.

Further, the high-gravity triethylene glycol regeneration device also includes: a booster pump, which is arranged between the lean-rich liquid heat exchanger and the gas-liquid heat exchanger, and the lean-rich liquid heat exchanger passes through the booster pump and the gas-liquid heat exchanger connected, the booster pump is used to pressurize the lean triethylene glycol liquid.

Further, the supergravity triethylene glycol regeneration device also includes: a tail gas heat exchanger, which is arranged between the triethylene glycol supergravity machine and the regenerative supergravity machine and communicated with the triethylene glycol supergravity machine, for regenerating tail gas and rich Triethylene glycol liquid heat exchange.

Further, the high-gravity TEG regeneration device also includes: a tail gas separator, which communicates with the tail gas heat exchanger, and is used for dehydrating the regenerated tail gas after heat exchange, and transporting the dehydrated regenerated tail gas to the pressurized recovery unit .

Further, the high-gravity TEG regeneration device further includes: a tail gas cooler, which is arranged between the tail gas heat exchanger and the tail gas separator, and cools the regenerated tail gas after heat exchange.

Applying the technical scheme of the utility model, a natural gas dehydration device including a movable skid is provided. Since the natural gas dehydration device includes a triethylene glycol supergravity absorption device and a supergravity triethylene glycol regeneration device, the triethylene glycol supergravity absorption The device is connected with the wet natural gas pipeline network for removing moisture in the natural gas, and the supergravity triethylene glycol regeneration device is connected with the triethylene glycol supergravity absorption device for dehydrating the rich triethylene glycol solution after absorbing water, so that Regeneration and recycling, so that through the absorption of moisture in natural gas, the regeneration of absorbents and the recycling of absorbents, the technology of almost completely removing moisture in natural gas, reducing the amount of absorbent used, and saving energy and equipment footprint Effect, and then provides a movable skid-mounted natural gas dehydration device.

In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. Below with reference to figure, the utility model is described in further detail.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 shows a schematic diagram of the connection structure of a movable skid-mounted natural gas dehydration device provided by an embodiment of the present invention; and

Fig. 2 shows a schematic diagram of the connection structure of an optional movable skid-mounted natural gas dehydration device provided by the embodiment of the present invention.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10. Triethylene glycol supergravity absorption device; 101. Coalescing filter; 102. Triethylene glycol supergravity machine; 20. Supergravity triethylene glycol regeneration device; 201. Tail gas heat exchanger; 202. Flash tank; 203 , front filter; 204, rear filter; 205, poor-rich liquid heat exchanger; 206, reboiler; 207, regenerative supergravity machine; 208, booster pump; 209, gas-liquid heat exchanger; 210, tail gas Cooler; 211. Exhaust gas separator.

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the utility model. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

It should be noted that the terms "first" and "second" in the specification and claims of the present utility model and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific order or sequence . It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

As introduced in the background art, the natural gas triethylene glycol dehydration device in the prior art uses an absorption tower and a regeneration tower, which are bulky and require a relatively large amount of triethylene glycol. It is difficult to form a skid-mounted device, which is only suitable for in-situ construction and cannot be moved. The utility model studies the above-mentioned problems, and proposes a movable skid-mounted natural gas dehydration device, as shown in Figure 1, including: a triethylene glycol supergravity absorption device 10, which is connected with the wet natural gas pipeline network, and is used for passing through three Glycol dehydrates the natural gas; the supergravity triethylene glycol regenerating device 20 communicates with the triethylene glycol outlet of the triethylene glycol supergravity absorption device 10, and is used for regenerating the triethylene glycol after absorbing water.

The above-mentioned natural gas dehydration device includes a triethylene glycol supergravity absorption device and a supergravity triethylene glycol regeneration device, and the triethylene glycol supergravity absorption device is connected with the wet natural gas pipeline network to remove moisture in natural gas. The glycol regeneration device is connected with the triethylene glycol supergravity absorption device, which is used to dehydrate the triethylene glycol-rich solution after water absorption, regenerate it, and recycle it, so as to absorb moisture in natural gas, regenerate absorbent and absorb The circulation of the agent achieves the technical effects of almost completely removing moisture in natural gas, reducing the amount of absorbent used, saving energy and the area occupied by the device, and then provides a movable skid-mounted natural gas dehydration device.

It should be noted that the above-mentioned natural gas dehydration device is used to dehydrate natural gas so that the treated natural gas can meet the requirements of long-distance transportation and industrial and civil use.

Natural gas contains a certain amount of light hydrocarbons or even heavy hydrocarbons and water after extraction. In order to stabilize the quality of natural gas and remove water and light hydrocarbons, the above-mentioned natural gas dehydration device has an absorption device 10 and a regeneration device 20 to treat the natural gas and absorb it. regeneration. Specifically, the absorption device 10 is used to dehydrate the wet natural gas, and the regeneration device 20 is used to regenerate the absorbed triethylene glycol, thereby achieving the purpose of dehydrating the natural gas and reducing the corrosion of the natural gas pipeline, and further solving the problem of the natural gas triethylene glycol dehydration device. The technical problems of moving and skid-mounting have achieved the effect of improving the quality and stability of natural gas.

In the above-mentioned natural gas dehydration device of the present invention, in order to utilize the absorption device 10 to realize the dehydration treatment of natural gas, optionally, as shown in Figure 2, the absorption device 10 includes: a coalescence filter 101 and a triethylene glycol supergravity machine 102 , the coalescing filter 101 is connected with the wet natural gas pipeline network, and is used for separating free liquid droplets and solid impurities in the natural gas; the triethylene glycol supergravity machine 102 is connected with the coalescing filter 101, and is used for absorbing the natural gas by triethylene glycol of moisture to obtain natural gas and TEG-rich liquid.

Specifically, the wet natural gas in a water-saturated state passing through the coalescing filter 101 enters the ultra-TEG supergravity machine 102, and under a certain pressure, the natural gas and the triethylene glycol gas-liquid reverse contact, and the water in the natural gas is absorbed into the three In glycol, the mist-catching wire mesh at the natural gas outlet removes glycol droplets larger than 5 μm. Among them, the triethylene glycol supergravity machine 102 can be filled with fillers according to the water content requirements of natural gas, so as to achieve the purpose of the best absorption efficiency requirements; The absorption effect of the triethylene glycol supergravity absorption device 10 can be controlled.

In the above-mentioned natural gas dehydration device of the present invention, in order to use the regeneration device 20 to realize the regeneration of TEG after water absorption, optionally, as shown in Figure 2, the high-gravity TEG regeneration device 20 includes a flash tank 202, and The triethylene glycol supergravity machine 102 communicates, and is used for flashing to separate the hydrocarbon gas dissolved in the rich triethylene glycol liquid; the above-mentioned supergravity triethylene glycol regeneration device 20 also includes a filter group, which communicates with the flash tank 202, and uses For filtering the impurities in the rich triethylene glycol liquid; the above-mentioned high gravity triethylene glycol regeneration device 20 also includes a heat exchanger group, communicated with the filter group, and is used to heat the rich triethylene glycol liquid; regeneration supergravity machine 207, and The filter group is connected to separate triethylene glycol and water vapor to obtain triethylene glycol-deficient liquid and regeneration tail gas.

In order to realize the filtration of impurities in the rich triethylene glycol liquid by the filter group, optionally, as shown in Figure 2, the above-mentioned filter group includes a pre-filter 203, communicated with the flash tank 202, and is used for filtering rich triethylene glycol Part of the heavy hydrocarbons in the liquid and degradation substances during the regeneration of TEG; the above-mentioned filter group also includes a post filter 204, which communicates with the front filter 203, and is used to remove solid impurities above 5 μm in the TEG-rich liquid.

In order to utilize the heat exchanger group to realize the heating of the rich triethylene glycol liquid, optionally, as shown in FIG. The TEG liquid exchanges heat with the TEG-poor liquid; the above-mentioned heat exchanger group also includes a reboiler 206, which communicates with the regeneration supergravity machine 207 and the poor-rich liquid heat exchanger respectively, and is used for heating the TEG-rich liquid.

In order to realize the preheating before the regeneration of the rich triethylene glycol liquid, optionally, as shown in Figure 2, the above-mentioned high-gravity triethylene glycol regeneration device 20 also includes a tail gas heat exchanger 201, which is arranged on the triethylene glycol high-gravity machine 102 It communicates with the regenerative supergravity machine 207 and the triethylene glycol supergravity machine 102, and is used to exchange heat between the regeneration tail gas and the triethylene glycol-rich liquid.

In order to realize the treatment of the tail gas regenerated after the above-mentioned heat exchange, optionally, as shown in FIG. The heated regeneration tail gas is dehydrated, and the dehydrated regeneration tail gas is sent to the pressurized recovery unit; and, optionally, the high-gravity triethylene glycol regeneration device 20 also includes a tail gas cooler 210, which is arranged in the tail gas heat exchanger Between 201 and tail gas separator 211, the regenerated tail gas after heat exchange is used for cooling. Specifically, the regenerated tail gas passes through the tail gas heat exchanger 201 to recover heat, then passes through the tail gas cooler 210 and uses circulating water to further cool it, and then passes through the tail gas separator 211 for gas-liquid separation, and the treated regenerated tail gas goes to the pressurized recovery unit, and the sewage goes to the sewage treatment system.

The reboiler 206 in the above-mentioned high-gravity triethylene glycol regenerating device 20 can be directly heated by fuel, the temperature is preferably 198-200°C, the concentration of triethylene glycol can reach 98.5-99.0% by weight, and the bottom is fed with hot dry gas to deplete the air. The liquid is stripped, and the concentration of triethylene glycol can reach 99.8% by weight; moreover, the regenerative supergravity machine 207 can have a built-in filler. It should be noted that the ratio of the hot dry gas fed into the reboiler 206 and the shape, material and texture of the filler filled in the regeneration supergravity machine 207 can also control the regeneration effect of the regeneration device 20 .

In a preferred embodiment, the triethylene glycol-rich liquid formed after dehydration of natural gas first enters the above-mentioned tail gas heat exchanger 201, and exchanges heat with the tail gas generated in the regenerative supergravity machine 207, thereby reducing the temperature of the tail gas, and at the same time Heating the TEG-rich liquid to 35-60°C; the preheated TEG-rich liquid enters the above-mentioned flash tank 202 to flash the hydrocarbon gas absorbed in the TEG, and the flash gas directly enters the fuel gas system; The flashed TEG-rich liquid passes through the above-mentioned pre-filter 203 to filter out part of the heavy hydrocarbons and degradation substances during TEG regeneration, and then passes through the post-filter 204 to remove solid impurities above 5 μm; The final rich triethylene glycol liquid enters the above-mentioned lean-rich liquid heat exchanger 205, exchanges heat with the hot lean glycol liquid flowing out of the buffer tank at the lower part of the reboiler 206, and raises the temperature to 110°C-120°C, and then enters the buffer tank for heat exchange The coil further exchanges heat with the hot lean glycol to raise the temperature to 140°C-170°C; the heated triethylene glycol-rich liquid enters the above-mentioned regenerative supergravity machine 207, and the moisture and a small part of hydrocarbons in the rich glycol are separated, It is discharged as tail gas and enters the tail gas heat exchanger 201 to preheat the triethylene glycol-rich liquid.

In order to realize the recycling of TEG after regeneration, optionally, as shown in FIG. The triethylene glycol supergravity machine 102 communicates with the natural gas and the lean triethylene glycol liquid heat exchange; and, optionally, the supergravity triethylene glycol regeneration device 20 also includes a booster pump 208, which is arranged on the lean rich liquid heat exchange Between the gas-liquid heat exchanger 205 and the gas-liquid heat exchanger 209, the poor-rich liquid heat exchanger 205 communicates with the gas-liquid heat exchanger 209 through a booster pump 208, and the booster pump 208 is used to pressurize the triethylene glycol-poor liquid.

Specifically, the natural gas dehydrated by the triethylene glycol supergravity absorption device 10 becomes dry natural gas with a relatively low temperature, and the above-mentioned gas-liquid heat exchanger 209 can be used to increase the temperature of the natural gas; meanwhile, the above-mentioned gas-liquid heat exchanger 209 also It can reduce the temperature of the TEG-poor liquid entering the TEG supergravity absorption device 10, and then enter the external pipeline network, and the TEG after absorbing water becomes a TEG-rich liquid, and then enters the supergravity TEG regeneration device 20 for regeneration, and then recycled.

In a preferred embodiment, the regenerated triethylene glycol-poor liquid passes through heat exchange coils in the buffer tank at the bottom of the reboiler 206 to exchange heat with the glycol-rich liquid, and is cooled by the outer wall of the buffer tank, and the temperature drops At about 140°C, it exits the buffer tank, enters the poor-rich liquid heat exchanger 205 to exchange heat with the rich glycol liquid, and when the temperature drops to about 65-75°C, it enters the booster pump 208, and the intake liquid is pressurized by the booster pump 208 The heat exchanger 209 exchanges heat with the external gas to 36-56°C, and finally enters the triethylene glycol supergravity machine 102 to absorb the moisture in the natural gas, so as to realize the recycling of triethylene glycol.

In practical application scenarios, the natural gas dehydration device of this embodiment can be applied to natural gas wellheads, natural gas gathering and transportation stations, or natural gas filling stations, etc., and is typically suitable for natural gas wellheads and wet natural gas pipeline networks that require dehydration , specifically, after the natural gas is produced from the wellhead, and after the pipeline network needs to dehydrate the wet natural gas and stabilize its quality as domestic or industrial gas, for example, the natural gas produced from the natural gas wellhead is dehydrated, desulfurized, and decarbonized Then it enters the external pipeline network, that is, the dehydration device of the embodiment of the utility model is suitable for use between the wet natural gas and the pipeline network entering the gathering and transportation or users.

The natural gas dehydration device of the embodiment of the utility model has provided industrial applications for many times in the Middle East. Among them, three sets of 500km ³ /h natural gas dehydration units provided for Iran use triethylene glycol to meet CE natural gas transmission standards.

From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects: the triethylene glycol supergravity absorption device is connected with the wet natural gas pipeline network for removing moisture in the natural gas, and the supergravity three The glycol regeneration device is connected with the triethylene glycol supergravity absorption device, which is used to dehydrate the triethylene glycol-rich solution after water absorption, regenerate it, and recycle it, so as to absorb moisture in natural gas, regenerate absorbent and absorb The circulation of the agent achieves the technical effects of almost completely removing moisture in natural gas, reducing the amount of absorbent used, saving energy and the area occupied by the device, and then provides a movable skid-mounted natural gas dehydration device.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. a kind of movable skid-mounted natual gas dehydrate unit, it is characterised in that including：

Triethylene glycol hypergravity absorption plant (10), is connected with wet gas pipe network, for being taken off by triethylene glycol to natural gas Water process；

Hypergravity triethylene glycol regenerating unit (20), the triethylene glycol outlet with the triethylene glycol hypergravity absorption plant (10), For carrying out regeneration treatment to the triethylene glycol after water suction.

2. natual gas dehydrate unit according to claim 1, it is characterised in that the triethylene glycol hypergravity absorption plant (10) include：

Coalescing filter (101), is connected with the wet gas pipe network, for the free state drop and solid in separating natural gas Impurity；And

Triethylene glycol hypergravity machine (102), is connected with the coalescing filter (101), for absorbing natural by the triethylene glycol Moisture in gas, to obtain natural gas and rich triethylene glycol liquid.

3. natual gas dehydrate unit according to claim 2, it is characterised in that the hypergravity triethylene glycol regenerating unit (20) include：

Flash tank (202), is connected with the triethylene glycol hypergravity machine (102), goes out to be dissolved in described rich three for flash separation sweet Appropriate hydrocarbon gas in alcohol liquid；

Filter group, is connected with the flash tank (202), for filtering the impurity in the rich triethylene glycol liquid；

Heat exchanger group, is connected with the filter group, for the rich triethylene glycol liquid to be heated；

Hypergravity machine (207) is regenerated, is connected with the filter group, it is sweet to obtain poor three for separating triethylene glycol and water vapour Alcohol liquid and regeneration tail gas.

4. natual gas dehydrate unit according to claim 3, it is characterised in that the filter group includes：

Front filter (203), is connected with the flash tank (202), for filter part heavy hydrocarbon in the rich triethylene glycol liquid and Degradation material when triethylene glycol regenerates；

After-filter (204), is connected with the front filter (203), for removing more than 5 μm in the rich triethylene glycol liquid Solid impurity.

5. natual gas dehydrate unit according to claim 3, it is characterised in that the heat exchanger group includes：

Poor rich liquid heat exchanger (205), is connected with the filter group, for by the rich triethylene glycol liquid and the poor triethylene glycol liquid Heat exchange；

Reboiler (206), is connected with the regeneration hypergravity machine (207) and the poor rich liquid heat exchanger, for heating respectively State rich triethylene glycol liquid.

6. natual gas dehydrate unit according to claim 5, it is characterised in that the hypergravity triethylene glycol regenerating unit (20) also include：

Gas-liquid heat-exchange (209), is connected with the poor rich liquid heat exchanger (205) and the triethylene glycol hypergravity machine (102) respectively, For the natural gas to be exchanged heat with the poor triethylene glycol liquid.

7. natual gas dehydrate unit according to claim 6, it is characterised in that the hypergravity triethylene glycol regenerating unit (20) also include：

Booster pump (208), is arranged between the poor rich liquid heat exchanger (205) and the gas-liquid heat-exchange (209), described rich or poor Liquid heat exchanger (205) is connected by the booster pump (208) with the gas-liquid heat-exchange (209), and the booster pump (208) is used for The poor triethylene glycol liquid is pressurized.

8. natual gas dehydrate unit according to claim 3, it is characterised in that the hypergravity triethylene glycol regenerating unit (20) also include：

Tail gas heat exchanger (201), is arranged between the triethylene glycol hypergravity machine (102) and the regeneration hypergravity machine (207) And connected with the triethylene glycol hypergravity machine (102), for the regeneration tail gas to be exchanged heat with the rich triethylene glycol liquid.

9. natual gas dehydrate unit according to claim 8, it is characterised in that the hypergravity triethylene glycol regenerating unit (20) also include：

Reconstruction of End Gas Separator (211), is connected with the tail gas heat exchanger (201), is carried out for the regeneration tail gas after heat exchanging Dewater treatment, and the regeneration tail gas after dehydration is delivered to supercharging recovery unit.

10. natual gas dehydrate unit according to claim 9, it is characterised in that the hypergravity triethylene glycol regenerating unit (20) also include：

Exhaust gas cooler (210), is arranged between the tail gas heat exchanger (201) and the Reconstruction of End Gas Separator (211), use will be changed Regeneration tail gas cooling after heat.