CN104877725A - Natural gas dehydration device - Google Patents
Natural gas dehydration device Download PDFInfo
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- CN104877725A CN104877725A CN201510260156.8A CN201510260156A CN104877725A CN 104877725 A CN104877725 A CN 104877725A CN 201510260156 A CN201510260156 A CN 201510260156A CN 104877725 A CN104877725 A CN 104877725A
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- adsorption
- regeneration
- natural gas
- air cooler
- supercharger
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- Separation Of Gases By Adsorption (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a natural gas dehydration device and particularly relates to a natural gas dehydration device applicable to CNG new-built stations and high-pressure well heads. The natural gas dehydration device comprises a front filtering system, an adsorption system, a rear filtering system and a regeneration system, wherein the adsorption system comprises at least two adsorption towers which are connected in parallel; the front filtering system and the rear filtering system are respectively connected to an inlet and an outlet of the adsorption system; the regeneration system comprises an air cooler, an air-water separator, a supercharger and an electric heater which are sequentially communicated; an inlet of the air cooler is connected with the inlet of the adsorption system, an outlet of the electric heater is connected with the outlet of the adsorption system, and the regeneration system can form a closed loop with one adsorption tower of the adsorption system through a control valve. The supercharger is arranged in the regeneration system, so that the regeneration system can acquire sufficient pressure to continuously work when the supercharger is not arranged in front of the dehydration device or does not work.
Description
Technical field
The present invention relates to a kind of purifying device for natural gas, especially a kind of natual gas dehydrate unit being applicable to the newly-built station of CNG and Intermediate High Pressure well head.
Background technology
The Sweet natural gas exploiting out from mineral reserve is the hydrocarbon mixture that component is very complicated, and containing a small amount of non-hydrocarbons impurity.Wherein, non-hydrocarbons impurity is usually containing H
2s, CO
2and organic sulfide.Due to the existence of water, these gaseous fractions will generate acid or acid solution, cause the heavy corrosion of gas pipe line and equipment.Therefore need by purifying treatment reach country formulate the defeated natural gas quality standard of commercial pipes or recovery become CNG gas quality standard.
In CNG gas station and refueling mother station, one of the equipment of most critical is exactly advanced dewatering equipment for natural gas.It can carry out deep dehydration to Sweet natural gas effectively; and the performance quality of dehydration directly affects the aerating speed of CNG filling machine and rideability and the gas storage system of CNG automobile and sell gas system whether produce " ice blocks up " phenomenon, and there is good provide protection to the gas-holder of CNG automobile.And the most critical of dewatering quality is that can the regeneration system rapidly of dewatering unit normally run.
Conventional advanced dewatering equipment for natural gas mainly comprises front filtering system, pressurizing device, adsorption system, rear filtering system and regeneration system rapidly; Adsorption system comprises two adsorption towers, and during an adsorption tower job, another adsorption tower utilizes regeneration system rapidly to regenerate; Specific works principle is as follows: Sweet natural gas, after filtering, utilizes pressurizing device to pressurize, then utilizes adsorption tower to dewater, and the Sweet natural gas major part after dehydration forms finished product Sweet natural gas by rear filtering system; Another small portion enters regeneration system rapidly, utilizes regeneration system rapidly to regenerate another adsorption tower, finally this part Sweet natural gas is input to pressurizing device pressurization again.This processed mode can use continuously, very convenient.
In individual well recovery process, dewatered clean unit often runs into the little (1500 ~ 4000Nm for the treatment of capacity
3/ h), the situation of recovery pressure higher (14 ~ 22MPa).In the case, according to its pressure range, consider from Energy Angle, preferred embodiment is that well head gas directly enters conventional rearmounted dewatering unit, does not now arrange supercharger before dewatering unit, enters the defeated or CNG tank car of pipe after natural gas conditioning.But because the rearmounted dehydrating regeneration system of routine need continue to enter recovery system after 6 hours continual high pressure dry gas after absorption get gas regeneration, separation, and by the compressor of dewatering unit front end, the recovery band of gas is walked the adsorption system that supercharging again enters dewatering unit.And the prerequisite of this scheme is do not arrange compressor before dewatering unit, otherwise reclaim gas can only externally emptying continuously, not only waste energy but also affect security, environmental impact assessment of building a station is influenced.
Newly-built standard C NG gas station, on the one hand due to aerating quantity not sufficient, causes compressor operating discontinuous, regeneration can not be carried out continuously, thus can not ensure the water dew point of finished product gas.On the other hand, it is finished product dry gas that gas is got in regeneration, and energy consumption is increased, and cost performance reduces.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of natual gas dehydrate unit being applicable to the newly-built station of CNG and Intermediate High Pressure well head.
The present invention solves the natual gas dehydrate unit that its technical problem adopts, comprise front filtering system, adsorption system, rear filtering system and regeneration system rapidly, described adsorption system is made up of at least two adsorption towers in parallel, and described front filtering system and rear filtering system are connected to import and the outlet of adsorption system; Described regeneration system rapidly is made up of the air cooler be communicated with successively, air water separator, supercharger and electric heater;
The import of described air cooler is connected with adsorption system import, and the outlet of described electric heater exports with adsorption system and is connected, and described regeneration system rapidly forms loop line by one of them adsorption tower of control valve and adsorption system.
Further, described front filtering system is made up of the coarse filter be communicated with successively and fine filter.
Further, described rear filtering system is made up of the dust filter unit be communicated with successively and rearmounted coarse filter.
Further, described air cooler is plate-fin air cooler.
The invention has the beneficial effects as follows: owing to being provided with supercharger in regeneration system rapidly, therefore when not having supercharger or supercharger not to work before dewatering unit, regeneration system rapidly still can obtain enough pressure and keep running.So just the Sweet natural gas of regeneration can be avoided emptying at individual well recovery process, ensure that the regeneration of newly-built standard C NG gas station can run continuously, this ensure that the quality of Sweet natural gas finished product gas, also save the energy simultaneously.Adopt the independent regeneration system rapidly unconnected with adsorption system, even discontinuous use compressor also can utilize self-energy to complete regeneration in newly-built CNG gas station, thus ensure CNG finished product gas.Change on rearmounted dewatering unit, also need supercharging again (power consumption) after the finished product dry gas after supercharging, dewatered clean need being used as resurgent gases, objectively increase the discharge capacity of compressor on CNG station, greatly improve the cost performance of building a station.Even if adopt rearmounted dewatering unit also can accomplish externally long-time discharge continuously on high pressure, small displacement, individual well without technique supercharger, while not increasing the investment of technique compressor, more environmental protection, more save energy.Significance is had more for the society advocating green, clean, environmental protection energetically.
Pass through optimization technological process, reach advanced technology, reliable, be suitable for, reasonable, environmental protection, energy-conservation object, make rearmounted dewatering unit that its own system under any circumstance can be utilized to realize refresh function, thus ensure the water dew point of Sweet natural gas, realize better economic benefit;
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention;
Fig. 2 is plot plan of the present invention;
Component, position and numbering in figure: adsorption tower 1, coarse filter 2, dust filter unit 3, air water separator 4, supercharger 5, electric heater 6.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, the present invention includes front filtering system, adsorption system, rear filtering system and regeneration system rapidly, described adsorption system is made up of at least two adsorption towers 1 in parallel, and described front filtering system and rear filtering system are connected to import and the outlet of adsorption system; Described regeneration system rapidly is made up of the air cooler be communicated with successively, air water separator 4, supercharger 5 and electric heater 6; These parts are all connected by pipeline, and pass through Valve controlling;
The import of described air cooler is connected with adsorption system import, and the outlet of described electric heater 6 exports with adsorption system and is connected, and described regeneration system rapidly forms loop line by one of them adsorption tower 1 of control valve and adsorption system; Air cooler is connected with the import of adsorption system, and the outlet of electric heater 6 is connected with the outlet of adsorption system.Regeneration system rapidly accesses adsorption system by valve system, when one of them adsorption tower 1 needs regeneration, utilizes the opening and closing of valve to form loop to make regeneration system rapidly and this adsorption tower 1.
Compared with conventional natural gas dewatering unit; Regeneration system rapidly of the present invention carries supercharger 5, and this makes regeneration system rapidly can not rely on other system and independent operating.
In use, as shown in Figure 1, high-pressure natural gas is first through front filtering system, then enter into adsorption system, after Sweet natural gas major part after adsorption system dewaters enters into, filtering system becomes Chen Pinqi, when needs regenerate, get the small portion dehydrated natural gas after adsorption system, Sweet natural gas enters into adsorption tower 1 to be regenerated, and then once enter into air cooler, air water separator 4, supercharger and electric heater, enter into adsorption tower 1 to be regenerated again, so circulation makes adsorption tower 1 regenerate.After adsorption tower 1 regenerates, this part Sweet natural gas enters subsequent flows journey again after adsorption tower 1 dewaters becomes finished product gas.
As can be seen from said process, no matter whether be provided with supercharger before adsorption system, regeneration system rapidly of the present invention can independent operating, is therefore particularly suitable for the Intermediate High Pressure well head not using preposition supercharger, and the newly-built CNG gas station of preposition supercharger intermittent operation.
Concrete, as shown in Figure 2, described front filtering system is made up of the coarse filter 2 be communicated with successively and fine filter.Coarse filter, be mainly used in impurity and free oil, free water content from.Described rear filtering system is made up of the dust filter unit 3 be communicated with successively and rearmounted coarse filter.Rearmounted coarse filter and coarse filter 2 are same type strainer, and difference is the position of installing.Described air cooler generally adopts plate-fin air cooler.
Claims (4)
1. natual gas dehydrate unit, comprise front filtering system, adsorption system, rear filtering system and regeneration system rapidly, described adsorption system is made up of at least two adsorption towers (1) in parallel, and described front filtering system and rear filtering system are connected to import and the outlet of adsorption system; It is characterized in that: described regeneration system rapidly is made up of the air cooler be communicated with successively, air water separator (4), supercharger (5) and electric heater (6);
The import of described air cooler is connected with adsorption system import, the outlet of described electric heater (6) exports with adsorption system and is connected, and described regeneration system rapidly forms loop line by one of them adsorption tower (1) of control valve and adsorption system.
2. natual gas dehydrate unit as claimed in claim 1, is characterized in that: described front filtering system is made up of the coarse filter be communicated with successively (2) and fine filter.
3. natual gas dehydrate unit as claimed in claim 1, is characterized in that: described rear filtering system is made up of the dust filter unit be communicated with successively (3) and rearmounted coarse filter.
4. the natual gas dehydrate unit as described in claim 1,2 or 3, is characterized in that: described air cooler is plate-fin air cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260156.8A CN104877725A (en) | 2015-05-20 | 2015-05-20 | Natural gas dehydration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260156.8A CN104877725A (en) | 2015-05-20 | 2015-05-20 | Natural gas dehydration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104877725A true CN104877725A (en) | 2015-09-02 |
Family
ID=53945406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510260156.8A Pending CN104877725A (en) | 2015-05-20 | 2015-05-20 | Natural gas dehydration device |
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| CN (1) | CN104877725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154159A (en) * | 2015-09-23 | 2015-12-16 | 天津市振津石油天然气工程有限公司 | Small-size movable type skid-mounted device and method for recycling CNG from well head gas |
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| CN202398265U (en) * | 2011-12-23 | 2012-08-29 | 黄伟民 | Energy-saving natural gas dryer |
| CN202538616U (en) * | 2012-02-20 | 2012-11-21 | 成都市科达自动化控制工程有限公司 | Residual-heat utilization natural gas molecular sieve dehydrating device |
| RU2534145C1 (en) * | 2013-07-17 | 2014-11-27 | Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" | Gas drying method and gas drying unit for its implementation |
| CN204073803U (en) * | 2014-09-25 | 2015-01-07 | 江苏嘉宇流体装备有限公司 | High-pressure natural gas dry decontamination system |
| CN204294089U (en) * | 2014-09-12 | 2015-04-29 | 安徽科海压缩机制造有限公司 | A kind of double tower dewatering unit of energy automatic pressure regulation balance |
| CN204644318U (en) * | 2015-05-20 | 2015-09-16 | 四川金星清洁能源装备股份有限公司 | Natual gas dehydrate unit |
-
2015
- 2015-05-20 CN CN201510260156.8A patent/CN104877725A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202398265U (en) * | 2011-12-23 | 2012-08-29 | 黄伟民 | Energy-saving natural gas dryer |
| CN202538616U (en) * | 2012-02-20 | 2012-11-21 | 成都市科达自动化控制工程有限公司 | Residual-heat utilization natural gas molecular sieve dehydrating device |
| RU2534145C1 (en) * | 2013-07-17 | 2014-11-27 | Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" | Gas drying method and gas drying unit for its implementation |
| CN204294089U (en) * | 2014-09-12 | 2015-04-29 | 安徽科海压缩机制造有限公司 | A kind of double tower dewatering unit of energy automatic pressure regulation balance |
| CN204073803U (en) * | 2014-09-25 | 2015-01-07 | 江苏嘉宇流体装备有限公司 | High-pressure natural gas dry decontamination system |
| CN204644318U (en) * | 2015-05-20 | 2015-09-16 | 四川金星清洁能源装备股份有限公司 | Natual gas dehydrate unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154159A (en) * | 2015-09-23 | 2015-12-16 | 天津市振津石油天然气工程有限公司 | Small-size movable type skid-mounted device and method for recycling CNG from well head gas |
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Application publication date: 20150902 |
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