CN201362705Y - Natural gas water removal and heavy hydrocarbon removal device - Google Patents
Natural gas water removal and heavy hydrocarbon removal device Download PDFInfo
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- CN201362705Y CN201362705Y CN 200920032182 CN200920032182U CN201362705Y CN 201362705 Y CN201362705 Y CN 201362705Y CN 200920032182 CN200920032182 CN 200920032182 CN 200920032182 U CN200920032182 U CN 200920032182U CN 201362705 Y CN201362705 Y CN 201362705Y
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Abstract
A natural gas water removal and heavy hydrocarbon removal device is characterized in that a wet natural gas pipeline is connected in series with a throttling valve (1) and a second flowmeter (9) and communicated with an upper end opening of an analytical tower (7) through a control valve and an adsorption tower (6); a plate heat exchanger (5)is communicated with a bottom end opening of the analytical tower (7) through the control valve and the adsorption tower (6); a branching pipeline of the throttling valve (1) is connected in series with a first flowmeter (2), a gas heat exchanger (3) and a heater (4) and then communicated with the bottom end opening of the analytical tower (7) through the control valve and the adsorption tower (6) in a shunt circuit manner; the gas heat exchanger (3) between the first flowmeter (2) and the heater (4) is connected with one end of the plate heat exchanger (5), and the other end of the gas heat exchanger (3) is communicated with the upper end opening of the analytical tower (7) through the control valve and the adsorption tower (6); and short-circuit valves (18) are arranged at the input end and the output end of the gas heat exchanger (3) and the heater (4). Therefore, the device simplifies the flow path and saves the investment, the occupied land and the operation cost.
Description
Technical field
The utility model relates to a kind of gas dehydration vapour and heavy hydrocarbon apparatus.Particularly not do not build extensive when concentrating the purifying treatment station at the gas gathering and transportation station, individual well well head or extend to place gas dehydration de-heavy hydrocarbon apparatus such as associated gas treatment station.
Background technology
Not do not build extensive when concentrating the purifying treatment station at the gas gathering and transportation station, individual well well head or extend to place such as associated gas treatment station, exploiting from the stratum as Su Lige gas field Sweet natural gas of mentioning in the utility model contains saturation water when coming out, in the defeated process of collection, along with temperature descends, moisture content is separated out from Sweet natural gas, form liquid water, ice and Sweet natural gas solid hydrate, reduced the circulating capacity of collection gas pipe line on the one hand, cause the obstruction of pipeline, valve, instrument etc. when serious, the safety and economic operation of influence collection gas transmission line; Quicken the corrosion of collection gas pipe line simultaneously.Therefore, must remove moisture content wherein outward before the regulation and stipulation Sweet natural gas is defeated, make its water dew point temperature be reduced to prescribed value or safety value.
The existence of same heavy hydrocarbon also can come by curding out along with the reduction of temperature, and indentation goes out coalescently again, and blocking pipeline influence gas transmission, returns downstream Sweet natural gas user simultaneously and causes potential safety hazard, also must removing before defeated outside.
Existing technology adopts the associated plant of one or more technologies, and moisture and heavy hydrocarbon are removed from Sweet natural gas.As adopt molecular sieve adsorption and triglycol equal solvent absorption process to dewater, air cooling method and the low temperature process heavy hydrocarbon that dewaters simultaneously, the small pressure difference flow limit method is taken off heavy hydrocarbon, and absorption process and low temperature process combination process take off combined methods such as heavy hydrocarbon, and the supersonic speed separating and dehydrating takes off hydrocarbon method or the like.These process units respectively have relative merits and certain working conditions.
Summary of the invention
The purpose of this utility model provides a kind of simplification flow process, reduces investment outlay, the gas dehydration de-heavy hydrocarbon apparatus of occupation of land and working cost, deviates from water and C simultaneously so that make in Sweet natural gas or the defeated process of associated gas collection
6Above heavy hydrocarbon makes its water, hydrocarbon dew point be equal to the level that low temperature process technology can arrive.
The purpose of this utility model is to realize like this, a kind of gas dehydration de-heavy hydrocarbon apparatus, it is characterized in that: comprise adsorption tower, Analytic Tower, under meter, gas heat exchanger and throttling valve at least, wet natural gas communicates by the upper port of control valve with adsorption tower and Analytic Tower respectively behind the wet natural gas pipeline serial connection throttling valve and second under meter; The dry gas that takes off after weighing communicates by the bottom nozzle of control valve with adsorption tower and Analytic Tower respectively behind plate-type heat exchanger; Wet natural gas divides two route control valves to communicate with the bottom nozzle of adsorption tower and Analytic Tower respectively behind throttling valve front port lateral serial connection first flow meter, gas heat exchanger, well heater again; Gas heat exchanger between first flow meter and the well heater connects plate-type heat exchanger one end, and through the other end and gas-liquid separator pipe connection, the gas heat exchanger the other end communicates by the upper port of control valve with adsorption tower and Analytic Tower respectively; Between the gas heat exchanger of serial connection and the well heater input and output side short valve is arranged.
Described well heater when load is lower than 60kW, the optional electric heater of using; Can select natural gas straight combustion well heater or high temperature thermal medium (thermal oil) well heater during greater than 60kW for use.
The utility model has the advantages that: 1. utilize TSA dewatering process flow device, promptly deviate from moisture by the combine adsorption agent of particular screen and deviate from heavy hydrocarbon again, kill two birds with one stone.2. utilize unstripped gas as resurgent gases, saved the power consumption that the resurgent gases circulation is consumed.3. go out hot resurgent gases and the cold resurgent gases and the dry gas heat exchange of adsorption tower, saved the usefulness heat of well heater and the consumption of conventional regeneration air water or electricity.4. device can skidization manufacture and design, and is convenient to transportation and the saving construction period is installed.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the utility model embodiment device structural representation.
Among the figure: 1, throttling valve; 2, first flow meter; 3, gas heat exchanger; 4, well heater; 5, plate-type heat exchanger; 6, adsorption tower; 7, Analytic Tower; 8, gas-liquid separator; 9, second under meter; 10, first control valve; 11, second control valve; 12, the 3rd control valve; 13, the 4th control valve; 14, the 5th control valve; 15, the 6th control valve; 16, the 7th control valve; 17, the 8th control valve; 18, short valve; 19, dry gas pipeline; 20, lateral; 21, wet natural gas pipeline.
Embodiment
As shown in Figure 1, wet natural gas communicates with adsorption tower 6 upper port by second control valve 11 respectively behind the wet natural gas pipeline 21 serial connection throttling valve 1 and second under meter 9, communicates with Analytic Tower 7 upper port by the 6th control valve 15.The dry gas that takes off after heavy is by communicating with the bottom nozzle of adsorption tower 6 by the 4th control valve 13 respectively behind the plate-type heat exchanger in the dry gas pipeline 19 5, communicating with the bottom nozzle of adsorption tower 6 and the bottom nozzle of Analytic Tower 7 by the 8th control valve 17; Wet natural gas divides two routes the 3rd control valve 12 and the 7th control valve 16 to communicate with the bottom nozzle of adsorption tower 6 and Analytic Tower 7 respectively after the throttling valve 1 front port lateral 20 of wet natural gas pipeline 21 is connected in series first flow meters 2, gas heat exchanger 3, well heater 4 again.Gas heat exchanger 3 between first flow meter 2 and the well heater 4 connects plate-type heat exchanger 5 one ends, through the other end and gas-liquid separator 8 pipe connection, gas heat exchanger 3 the other ends communicate with the upper port of adsorption tower 6 and Analytic Tower 7 by first control valve 10 and the 5th control valve 14 respectively.The gas heat exchanger 3 of serial connection is connected short valve 18 with well heater 4 input and output sides.
The alternate cycles technology that Sweet natural gas is finished absorption and resolved by the gas dehydration de-heavy hydrocarbon apparatus:
Absorbing process is: a normal temperature wet natural gas of standing enters adsorption tower 6 through throttling valve 1 and second under meter, 9 backs by second control valve 11, and at this moment, first control valve 10 is closed; Wet natural sorbent material through adsorption tower 6 in take off water and heavy hydrocarbon up to standard after by the 4th control valve 13 discharges of adsorption tower 6 bottoms, at this moment, the 3rd control valve 12 is closed; Defeated outside again after plate-type heat exchanger 5 and resurgent gases heat exchange.
Parsing technology is: wet natural one wet natural gas (resurgent gases) of telling before entering throttling valve 1 enters Analytic Tower 7 through first flow meter 2, interchanger 3 and well heater 4 behind the 7th control valve 16 (temperature is heated to about 260 ℃), and this moment, the 8th control valve 17 was closed; Analytic Tower 7 absorbs water and heavy hydrocarbon, and will add hot resurgent gases that thermal desorption gets off by the resurgent gases heat exchange before interchanger 3 and the heating, again through plate-type heat exchanger 5 be adsorbed the dry gas heat exchange cooling that tower 6 comes out after enter gas-liquid separator 8, the free-water that in gas-liquid separator 8 resurgent gases is parsed separates with heavy hydrocarbon, and the raw material wet natural gas that gas-liquid separator 8 top gas and process throttling valve 1 and second under meter 9 enter is mixed into adsorption tower 6 and takes off the heavy hydrocarbon processing.
Cold blowing process: when the temperature of coming out from Analytic Tower 7 when resurgent gases reaches 220 ℃ of setting, the regenerative process of sorbent material is considered as finishing, and well heater 4 quits work, up to resurgent gases when the out temperature of Analytic Tower 7 equates, adsorbent temperature drops to normal temperature, and cold blowing finishes.
In an absorbing process cycle and parsing technology (adsorbent reactivation cold blowing) cycle, the time respectively is 8 hours usually.By switching the terminal valve of adsorption tower 6, Analytic Tower 7, adsorption tower 6 becomes regenerator column, and Analytic Tower 7 becomes and is adsorption tower.
With 8 hours periods is example, and the time is allocated as follows: adsorbed thermal regeneration 5 hours, cold blowing 3 hours 8 hours.
Well heater 4 when load is lower than 60kW, the optional electric heater of using; Can select natural gas straight combustion well heater or high temperature thermal medium (thermal oil) well heater during greater than 60kW for use.
At following Su Lige gas field Sweet natural gas component, the sorbent material of the special use that filters out has three kinds of example combinations:
| Component | Mole is formed | Component | Mole is formed | Component | Mole is formed |
| C 1 | 91.934 | iC 5 | 0.094 | nC 9 | 0.012 |
| C 2 | 4.96 | nC 5 | 0.046 | nC 10 | 0.005 |
| C 3 | 0.948 | nC 6 | 0.11 | C 11+ | 0.003 |
| iC 4 | 0.172 | nC 7 | 0.104 | CO 2 | 0.701 |
| nC 4 | 0.165 | nC 8 | 0.024 | N 2 | 0.722 |
Water wherein is saturation water.
Sorbent material combination embodiment 1:
1. the activated alumina consumption is 10 times of maximum saturation quality in the gas;
2. 13X molecular sieve, consumption is for removing C6～C8 heavy hydrocarbon and CO2 total mass 10 times;
3. Type B silica gel, specific surface area is about 420～500m
2/ g, mean pore size is 3.5nm, particle diameter 40 orders; Consumption for removing 〉=20 times of the total mass of C8+;
4. mesopore active carbon from coal AFX-II, consumption for removing 〉=20 times of the total mass of C11+.
Sorbent material combination embodiment 2:
1. the activated alumina consumption is 11 times of maximum saturation quality in the gas;
2. 13X molecular sieve, consumption is for removing C6～C8 heavy hydrocarbon and CO2 total mass 12 times;
3. Type B silica gel, specific surface area is about 420～500m
2/ g, mean pore size is 3.5nm, particle diameter 40 orders; Consumption for removing 〉=25 times of the total mass of C8+;
4. mesopore active carbon from coal AFX-II, consumption for removing 〉=25 times of the total mass of C11+.
Sorbent material combination embodiment 3:
1. the activated alumina consumption is 12 times of maximum saturation quality in the gas;
2. 13X molecular sieve, consumption is for removing C6～C8 heavy hydrocarbon and CO2 total mass 15 times;
3. Type B silica gel, specific surface area is about 420～500m
2/ g, mean pore size is 3.5nm, particle diameter 40 orders; Consumption for removing 〉=30 times of the total mass of C8+;
4. mesopore active carbon from coal AFX-II, consumption for removing 〉=30 times of the total mass of C11+.
The saturated water yield in the above-mentioned gas, to remove 〉=heavy hydrocarbon of C6 and CO2 mole or massfraction can determine concrete numerical value with the mass spectroscopy or the chromatogram analysis method of industry routine.The numerical value of according to the client hydrocarbon dew point needs being chosen during use is chosen different sorbent material combinations, the minimum multiple point of general selection is got and can be guaranteed that hydrocarbon reveals less than-10 degree, select the highest multiple point to get hydrocarbon is revealed less than-25 degree, water dew point all can guarantee less than-30 degree.
Three-column process flow technology and above-mentioned principle are similar.
Main control parameters is as follows:
The natural gas temperature setting range of well heater 4 outlets is 180 ℃～260 ℃; When the temperature that resurgent gases goes out Analytic Tower reached 140 ℃～220 ℃, regeneration was finished; The design temperature that resurgent gases is come out from plate-type heat exchanger 5 is higher 5 ℃ than wet natural gas; The numerical value of resurgent gases flow meter (FI2) is 20%～35% of wet natural gas flow.
Above temperature parameter can suitably be adjusted concrete set(ting)value according to gas water, the hydrocarbon dew point of reality test.When saturated heavy hydrocarbon in the unstripped gas and water-content are higher, well heater 4 temperature outs and regeneration back temperature capping value.
This technology can be in the pressure range of broad (0.3～9.0MPa) and the treatment capacity scope (0.2 * 10 of broad
4m
3/ d～150 * 10
4m
3/ use in d), fundamentally simplify flow process, reduce investment outlay, occupation of land and working cost, process unit can also become sled to manufacture and design simultaneously.
Claims (2)
1, a kind of gas dehydration de-heavy hydrocarbon apparatus, it is characterized in that: comprise adsorption tower (6), Analytic Tower (7), under meter, gas heat exchanger (3) and throttling valve (1) at least, wet natural gas communicates by the upper port of control valve with adsorption tower (6) and Analytic Tower (7) respectively behind wet natural gas pipeline serial connection throttling valve (1) and second under meter (9); The dry gas that takes off after weighing communicates by the bottom nozzle of control valve with adsorption tower (6) and Analytic Tower (7) respectively behind plate-type heat exchanger (5); Wet natural gas divides two route control valves to communicate with the bottom nozzle of adsorption tower (6) and Analytic Tower (7) respectively behind throttling valve (1) front port lateral serial connection first flow meter (2), gas heat exchanger (3), well heater (4) again; Gas heat exchanger (3) between first flow meter (2) and the well heater (4) connects plate-type heat exchanger (5) one ends, through the other end and gas-liquid separator (8) pipe connection, gas heat exchanger (3) the other end communicates by the upper port of control valve with adsorption tower (6) and Analytic Tower (7) respectively; Between the gas heat exchanger (3) of serial connection and well heater (4) input and output side short valve (18) is arranged.
2, a kind of gas dehydration de-heavy hydrocarbon apparatus according to claim 1 is characterized in that: described well heater (4) when load is lower than 60kW, the optional electric heater of using; Can select natural gas straight combustion well heater or high temperature thermal medium hotline heater during greater than 60kW for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920032182 CN201362705Y (en) | 2009-03-12 | 2009-03-12 | Natural gas water removal and heavy hydrocarbon removal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920032182 CN201362705Y (en) | 2009-03-12 | 2009-03-12 | Natural gas water removal and heavy hydrocarbon removal device |
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| CN201362705Y true CN201362705Y (en) | 2009-12-16 |
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| CN 200920032182 Expired - Lifetime CN201362705Y (en) | 2009-03-12 | 2009-03-12 | Natural gas water removal and heavy hydrocarbon removal device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508923B (en) * | 2009-03-12 | 2012-10-10 | 西安长庆科技工程有限责任公司 | Dehydration and de-heavy hydrocarbon apparatus and process for natural gas |
| CN103031168A (en) * | 2011-09-30 | 2013-04-10 | 新地能源工程技术有限公司 | Dehydration and de-heavy hydrocarbon technology for production of liquefied natural gas from methane-rich mixed gas |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
| CN103525449A (en) * | 2013-10-12 | 2014-01-22 | 宁夏宝塔石化科技实业发展有限公司 | Recycling process of oilfield associated gas light hydrocarbons |
| CN104685036A (en) * | 2012-08-03 | 2015-06-03 | 气体产品与化学公司 | Heavy hydrocarbon removal from a natural gas stream |
| CN105567363A (en) * | 2016-02-22 | 2016-05-11 | 中国石油集团工程设计有限责任公司 | Natural gas dewaxing, dehydration and dehydrocarbon device and method |
| CN107868687A (en) * | 2016-12-31 | 2018-04-03 | 福建双环能源科技股份有限公司 | A kind of gas water dew point and hydrocarbon dew point restoring method |
-
2009
- 2009-03-12 CN CN 200920032182 patent/CN201362705Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508923B (en) * | 2009-03-12 | 2012-10-10 | 西安长庆科技工程有限责任公司 | Dehydration and de-heavy hydrocarbon apparatus and process for natural gas |
| CN103031168A (en) * | 2011-09-30 | 2013-04-10 | 新地能源工程技术有限公司 | Dehydration and de-heavy hydrocarbon technology for production of liquefied natural gas from methane-rich mixed gas |
| CN103031168B (en) * | 2011-09-30 | 2014-10-15 | 新地能源工程技术有限公司 | Dehydration and de-heavy hydrocarbon technology for production of liquefied natural gas from methane-rich mixed gas |
| CN104685036A (en) * | 2012-08-03 | 2015-06-03 | 气体产品与化学公司 | Heavy hydrocarbon removal from a natural gas stream |
| CN104685036B (en) * | 2012-08-03 | 2017-07-11 | 气体产品与化学公司 | Heavy hydrocarbon is removed from natural gas flow |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
| CN103525449A (en) * | 2013-10-12 | 2014-01-22 | 宁夏宝塔石化科技实业发展有限公司 | Recycling process of oilfield associated gas light hydrocarbons |
| CN105567363A (en) * | 2016-02-22 | 2016-05-11 | 中国石油集团工程设计有限责任公司 | Natural gas dewaxing, dehydration and dehydrocarbon device and method |
| CN107868687A (en) * | 2016-12-31 | 2018-04-03 | 福建双环能源科技股份有限公司 | A kind of gas water dew point and hydrocarbon dew point restoring method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091216 |