CN101732942A - Method for separating heavy hydrocarbon in mixed gas and device thereof - Google Patents
Method for separating heavy hydrocarbon in mixed gas and device thereof Download PDFInfo
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- CN101732942A CN101732942A CN201010013674A CN201010013674A CN101732942A CN 101732942 A CN101732942 A CN 101732942A CN 201010013674 A CN201010013674 A CN 201010013674A CN 201010013674 A CN201010013674 A CN 201010013674A CN 101732942 A CN101732942 A CN 101732942A
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Abstract
The invention provides a method for separating heavy hydrocarbon in mixed gas and a device thereof. The method mainly comprises the following steps: 1) adsorption, 2) regeneration and 3) switching, wherein the adsorption of the step 1) is implemented through adsorption tanks filled with 5A or 13X adsorbent. The device mainly comprises a first adsorption tank and a second adsorption tank of which the upper and lower ports are communicated with an upper pipe system and a lower pipe system respectively; the upper pipe system is connected with a cooler and a separator in turn through a conduit; a liquid outlet of the separator is connected with a ninth valve and a liquid storage tank in turn; and a gas outlet of the separator is connected with a pressing device and a heater in turn. The method and the device mainly solve the technical problems that the conventional separation method has complex process and the device using the conventional separation method has a complicated structure and high cost. The method and the device are mainly used for separating the heavy hydrocarbon in the mixed gas, and have the characteristic of simple process.
Description
Technical field
The invention belongs to gas separation technique field, be specifically related to the separation method and the device thereof of heavy hydrocarbon in a kind of mist.
Background technology
In the chemical industry, the admixture of gas that a lot of process gas all are made up of various ingredients, according to different purposes, often need a kind of or some kinds of components are wherein separated or the multiple useless or harmful gas component in the air-flow is removed, to change the composition of admixture of gas.
At present, less in the combustion process because natural gas belongs to a kind of clean energy resource for environmental pollution, so its application and the scope of application are more and more widely.The key component of natural gas is a methane, in addition, also contains ethane, propane, butane etc.The natural gas that different oil gas fields are produced differs widely, and wherein the content of methane has very big difference.The existence of the component except that methane is very big for the natural gas burning performance impact, especially C
3 +Component (C
3Above component) is that the heavy hydrocarbon component can produce coking, carbon distribution etc. when burning, easily stops up burner nozzle.To the field such as the corrosion resistant plate of the clean heating of ask for something, the heating of automotive sheet, carbon distribution will produce pollution, have a strong impact on surface quality of products, therefore, heavy hydrocarbon component in the natural gas must be removed.
In traditional operating procedure, usually adopt freezing to make some components condense liquefaction in the mist, cryogenic temperature is generally below-25 ℃.Under low temperature and elevated pressures, make the C in the natural gas
3 +Component is condensed into liquid in various degree.But this condensation need be adopted cryogenic refrigerating system, and the number of devices that this system needs is many, and bulky and technology complex circuit need take large stretch of ground, the cost of investment height.
C in the application of cold temperature refrigeration system separating natural gas
3 +Component, condensation temperature roughly are divided into shallow cold-peace deep cooling two big classes, and shallow cold temperature is at-25 ℃～-40 ℃, and cryogenic temperature is generally about-90 ℃～-100 ℃.Typical refrigeration system is used propylene refrigeration system and ethylene refrigeration system, needs large-scale refrigeration compressor, equipment such as cryogen suction tanks at different levels, cooler, condenser, evaporimeter (separated gas cooler), cold-producing medium basin.Not only complicated huge, its establishment of this kind refrigeration system and operating cost height, and this system's complicated operation needs various professionals' operations, and move inconvenience, easily cause the waste of the equipment and the energy.
Summary of the invention
The object of the present invention is to provide the separation method and the device thereof of heavy hydrocarbon in a kind of mist, mainly solved in the prior art for the separating technology complexity of heavy hydrocarbon in the mist, the equipment of application is numerous and jumbled, the technical problem that cost is high.
The technical solution that the present invention is directed to above-mentioned technical problem is as follows:
The separation method of heavy hydrocarbon in a kind of mist, its special character are that this method may further comprise the steps:
1) absorption
1.1) the contained free fluid of mist is carried out isolated by filtration;
1.2) will be through step 1.1) mist after the isolated by filtration transports to the adsorption tanks that 5A or 13X adsorbent are housed and are used to adsorb; This mist flows into adsorbent bed from the bottom to top; Molecular size is adsorbed less than the gas in adsorbent aperture;
1.3) will be through step 1.2) gas finished of absorption transports to discharge duct after separating after filtration;
2) regeneration
2.1) the heating parsing
The thermal current of heater via is transported to the adsorption tanks that 5A or 13X adsorbent are housed and are used to regenerate, and this thermal current heats parsing for adsorbent, makes adsorbent material resolve, thereby obtains hot regeneration gas;
2.2) cooling
Will be through step 2.1) the hot regeneration gas of gained introduces in the cooler and cools off, and making heavy hydrocarbon in the mist condense becomes liquid;
2.3) separate
Will be through step 2.2) liquids and gases of gained transport to separator, after separator separates, after then introducing receiver, the heavy hydrocarbon that is condensed into liquid discharges;
2.4) supercharging, heating
2.4.1) will be through step 2.3) gas after separating introduces booster, makes gas boosting to overcome the resistance of gas flow;
2.4.2) after gas after the supercharging introduced and be heated to the required temperature of regeneration in the heater, thermal current continued execution in step 2.1 after introducing the adsorption tanks that are used to regenerate);
3) switch
Absorption and step 2 with step 1)) regeneration, require to switch according to absorption, realize circulation absorption.The above step 2.3) separator in is one-level, secondary or multiple-stage separator.
The above step 2.1) and the heater 2.4.2) be one-level, secondary or multistage heater.
Switching in the above step 3) is to switch by valve; It is that pneumatic actuator control is switched or switched manually that described valve switches.
The separator of heavy hydrocarbon in a kind of mist comprises first adsorption tanks and second adsorption tanks, and described first adsorption tanks are communicated with last piping and following piping respectively with the upper and lower port of second adsorption tanks; Described go up piping by first valve of parallel connection and second valve and the 3rd valve in parallel with constitute after the 4th valve is in parallel, be provided with air inlet pipe between described the 3rd valve and the 4th valve; Described down piping by the 5th valve of parallel connection and the 6th valve and the 7th valve in parallel with constitute after the 8th valve is in parallel, be provided with blast pipe between described the 7th valve and the 8th valve; Be connected with the air inlet of cooler by conduit between described first valve and second valve; The outlet of described cooler is connected with the inlet of separator by conduit; The liquid outlet of described separator is connected with the 9th valve and receiver successively by conduit, and the liquid outlet of described receiver is provided with the tenth valve; The gas outlet of described separator is connected with the air inlet of pressue device by conduit; The gas outlet of described pressue device is connected with the air inlet of heater by conduit, and the gas outlet of described heater is connected between the 5th valve and the 6th valve by conduit; It is characterized in that: 5A or 13X adsorbent are housed respectively in described first adsorption tanks and second adsorption tanks.
The above cooler adopts temperature to be lower than 25 ℃ water at low temperature but cold or cooling of refrigerator refrigeration or the cooling of throttling expansion refrigeration.
The temperature of the above low temperature water-cooled is preferably 7 ℃.
The above separator adopts inertial separation, the combination of isolated by filtration or inertia and isolated by filtration.
The above pressue device is roots blower or compressor.
The above heater can adopt electrical heating or high-temperature steam heating or heat-conducting oil heating or waste heat according to thermal source.
The present invention has the following advantages:
1. simple, the good separating effect of technical process.
The separation method of heavy hydrocarbon only adsorbs heavy hydrocarbon by the 5A or the 13X adsorbent of filling in the adsorption tanks in the mist provided by the invention, in the process of adsorbent reactivation, heavy hydrocarbon is broken away from simultaneously, realized the separation of heavy hydrocarbon in the mist, the simple and good separating effect of whole technical process.
2. simple in structure, cost is low, be convenient to install.
In the mist provided by the invention the separator overall structure of heavy hydrocarbon simple, need not professional's operation; And it is whole that this device skid becomes, and floor space is little, is convenient to install.
3. save energy consumption in the heating process.
Because not cryogenic refrigeration of mist can be saved energy consumption when therefore heating.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Description of reference numerals is as follows:
1-first adsorption tanks, 2-second adsorption tanks, the last piping of 3-, piping under the 4-, 5-first valve, 6-second valve, 7-the 3rd valve, 8-the 4th valve, 9-the 5th valve, 10-the 6th valve, 11-the 7th valve, 12-the 8th valve, the 13-cooler, 14-separator, 15-pressue device, the 16-heater, 17-the 9th valve, 18-receiver, 19-the tenth valve, 20-blast pipe, 23-air inlet pipe.
The specific embodiment
The separation method of heavy hydrocarbon in the mist provided by the invention, implementation procedure is as described below:
1) absorption
1.1) the contained free fluid of mist is carried out isolated by filtration.
1.2) will be through step 1.1) mist after the isolated by filtration transports to the adsorption tanks that 5A or 13X adsorbent are housed and are used to adsorb; This mist flows into adsorbent bed from top to bottom, because the hole of adsorbent and the existence of intermolecular attraction make molecular size be adsorbed less than the gas in adsorbent aperture.All will be adsorbed such as sour gas, moisture and heavy hydrocarbon components such as the CO2 in the mist, H2S.
1.3) will be through step 1.2) gas finished of absorption transports to discharge duct after separating after filtration.
2) regeneration
2.1) the heating parsing
The thermal current of heater via is transported to the adsorption tanks that 5A or 13X adsorbent are housed and are used to regenerate, and this thermal current heats parsing for adsorbent, makes the adsorbents adsorb material resolve, thereby obtains hot regeneration gas.
2.2) cooling
Will be through step 2.1) the hot regeneration gas of gained introduces in the cooler and cools off, and making heavy hydrocarbon in the mist condense becomes liquid.
2.3) separate
Will be through step 2.2) liquids and gases of gained transport to separator, after separator separates, after then introducing receiver, the heavy hydrocarbon that is condensed into liquid discharges.
2.4) supercharging, heating
2.4.1) will be through step 2.3) gas after separating introduces booster, makes gas boosting to overcome the resistance of gas flow.
2.4.2) after gas after the supercharging introduced and be heated to the required temperature of regeneration in the heater, thermal current continued execution in step 2.1 after introducing the adsorption tanks that are used to regenerate).
3) switch
Absorption and step 2 with step 1)) regeneration, require to use pneumatic actuator control according to absorption and switch or switch manually, realize that circulation adsorbs.
Referring to Fig. 1, the invention provides the separator of heavy hydrocarbon in a kind of mist, this device is mainly finished the absorption and the two big functions of regenerating.This separator comprises first adsorption tanks 1 and second adsorption tanks 2, and its upper and lower port is communicated with last piping 3 and following piping 4 respectively.Wherein go up piping 3 by first valve 5 of parallel connection and second valve 6 and the 3rd valve 7 in parallel with constitute after the 4th valve 8 is in parallel; Following piping 4 by the 5th valve 9 of parallel connection and the 6th valve 10 and the 7th valve 11 in parallel with constitute after the 8th valve 12 is in parallel.Be provided with air inlet pipe 23 between the 3rd valve 7 and the 4th valve 8, the mist after will filtering with realization imports in first adsorption tanks 1 or second adsorption tanks 2; Be provided with blast pipe 20 between the 7th valve 11 and the 8th valve 12, the mist after will adsorbing with realization is discharged after filtering.
Be connected by the air inlet of conduit with cooler 13 between first valve 5 and second valve 6, the outlet of cooler 13 is connected by the inlet of conduit with separator 14.The liquid outlet of separator 14 is connected with the 9th valve 17 and receiver 18 successively by conduit, and the liquid outlet of receiver 18 is provided with the tenth valve 19, so that the liquid of storing is discharged; The gas outlet of separator 14 is connected by the air inlet of conduit with pressue device 15, and the gas outlet of pressue device 15 is connected by the air inlet of conduit with heater 16.The gas outlet of pressue device 15 is connected by the air inlet of conduit with heater 16, and the gas outlet of heater 16 is connected with conduit between the 6th valve 10 by conduit and the 5th valve 9.
All be filled with 5A or 13X adsorbent in above-mentioned first adsorption tanks 1 and second adsorption tanks 2, this adsorbent not only can adsorb the heavy hydrocarbon component in the mist, sour gas and moisture such as all right CO absorption 2, H2S.
The type of cooling of above-mentioned cooler 13 is selected air-cooled cooling or water-cooled cooling usually for use, also can select the water at low temperature that is lower than 25 ℃ but cold or cooling of refrigerator refrigeration or the cooling of throttling expansion refrigeration for use, thereby make the heavy hydrocarbon in the mist in cooler 13, fully condense.When selecting the cold but mode of water at low temperature for use, selecting for use 15 ℃ water at low temperature more suitable, preferably select for use 7 ℃ of low temperature water-cooleds to realize that heavy hydrocarbon better condenses, also be simultaneously that the gas-liquid separation in the later separation device 14 is got ready, and makes separating effect better.
Above-mentioned separator 14 can be set to one-level, secondary or multiple-stage separator as requested; Its separation method can adopt inertial separation, the combination of isolated by filtration or inertia and isolated by filtration; In addition, this separator 14 also can make up arbitrarily according to separation accuracy.
Above-mentioned pressue device 15 can be selected roots blower or compressor for use.Because the compressor cost is higher, it is comparatively suitable therefore to choose roots blower in actual applications.
Above-mentioned heater 16 can be set to one-level, secondary or multistage heater as requested; It can generally select electrical heating for use according to any one mode of heating in different thermal source employing electrical heating, high-temperature steam heating, heat-conducting oil heating or the waste heat.
The present invention is applicable to the various separation that contain the mist of heavy hydrocarbon, is particularly useful for the separation of heavy hydrocarbon in the natural gas.Below with reference to accompanying drawing the device that the invention provides in order to realize said method is explained in detail for the working method that heavy hydrocarbon in the natural gas separates.
Referring to Fig. 1, enter first adsorption tanks 1 that are filled with 5A or 13X adsorbent by natural gas via the 3rd valve 7 after the filtration of air inlet pipe 23 inputs, after adsorbent adsorbs sour gas such as CO2, H2S, moisture and heavy hydrocarbon, natural gas via after absorption enters blast pipe 20 by the 7th valve 11 and exports after filtering, so far realizes whole adsorption process.
When first adsorption tanks 1 adsorb, natural gas in second adsorption tanks 2 enters cooler 13 by second valve 6, heavy hydrocarbon in the natural gas is condensed into and is liquid, the natural gas that is mixed with liquid heavy hydrocarbon imports separator 14 by conduit, this separator 14 well separates the liquids and gases in the natural gas, and the liquid after will separating inputs to receiver 18 by the liquid outlet of separator 14 through the 9th valve 17; Gas after separating is then transported to pressue device 15 by conduit, gas after pressurized device 15 superchargings is transported to heater 16 by conduit, 16 pairs of gases of heater are heated to predetermined temperature makes it become high-temperature gas, this high-temperature gas is transported to second adsorption tanks 2 that 5A or 13X adsorbent are housed by conduit behind the 6th valve 10, adsorbent is heated, make materials such as the moisture that adsorbs in the adsorbent, heavy hydrocarbon resolve and discharge through second valve 6, reenter regeneration cycle process in company with gas.Wherein regenerative process is controlled automatically by single-chip microcomputer or PLC.
After second adsorption tanks 2 are finished regeneration, first adsorption tanks 1 and second adsorption tanks 2 are switched.After the switching, first adsorption tanks 1 participate in regenerative process, and this moment, second adsorption tanks 2 then participated in adsorption process.Valve handover operation is herein controlled by pneumatic actuator, also can operate manually.So circulation can realize the separation fully of the heavy hydrocarbon in the natural gas, thereby make that the cleanliness factor of combustion of natural gas is higher, can not produce the phenomenon of coking and carbon distribution in the combustion process.
Claims (10)
1. the separation method of heavy hydrocarbon in the mist is characterized in that this method may further comprise the steps:
1) absorption
1.1) the contained free fluid of mist is carried out isolated by filtration;
1.2) will be through step 1.1) mist after the isolated by filtration transports to the adsorption tanks that 5A or 13X adsorbent are housed and are used to adsorb; This mist flows into adsorbent bed from the bottom to top; Molecular size is adsorbed less than the gas in adsorbent aperture;
1.3) will be through step 1.2) gas finished of absorption transports to discharge duct after separating after filtration;
2) regeneration
2.1) the heating parsing
The thermal current of heater via is transported to the adsorption tanks that 5A or 13X adsorbent are housed and are used to regenerate, and this thermal current heats parsing for adsorbent, makes the adsorbents adsorb material resolve, thereby obtains hot regeneration gas;
2.2) cooling
Will be through step 2.1) the hot regeneration gas of gained introduces in the cooler and cools off, and making heavy hydrocarbon in the mist condense becomes liquid;
2.3) separate
Will be through step 2.2) liquids and gases of gained transport to separator, after separator separates, after then introducing receiver, the heavy hydrocarbon that is condensed into liquid discharges;
2.4) supercharging, heating
2.4.1) will be through step 2.3) gas after separating introduces booster, makes gas boosting to overcome the resistance of gas flow;
2.4.2) after gas after the supercharging introduced and be heated to the required temperature of regeneration in the heater, thermal current continued execution in step 2.1 after introducing the adsorption tanks that are used to regenerate);
3) switch
Absorption and step 2 with step 1)) regeneration, require to switch according to absorption, realize circulation absorption.
2. the separation method of heavy hydrocarbon is characterized in that in a kind of mist according to claim 1, described step 2.3) in separator be one-level, secondary or multiple-stage separator.
3. the separation method of heavy hydrocarbon is characterized in that in a kind of mist according to claim 1, described step 2.1) and 2.4.2) in heater be one-level, secondary or multistage heater.
4. according to the separation method of heavy hydrocarbon in the arbitrary described a kind of mist of claim 1 to 3, it is characterized in that the switching in the described step 3) is to switch by valve; It is that pneumatic actuator control is switched or switched manually that described valve switches.
5. the separator of heavy hydrocarbon in the mist comprises first adsorption tanks (1) and second adsorption tanks (2), and described first adsorption tanks (1) are communicated with last piping (3) and time piping (4) respectively with the upper and lower port of second adsorption tanks (2); Described first valve (5) and second valve (6) and the 3rd valve (7) back in parallel with the 4th valve (8) formation in parallel of going up piping (3) by parallel connection is provided with air inlet pipe (23) between described the 3rd valve (7) and the 4th valve (8); Described piping (4) down is provided with blast pipe (20) by the 5th valve (9) and the 6th valve (10) and the 7th valve (11) back in parallel with the 8th valve (12) formation in parallel of parallel connection between described the 7th valve (11) and the 8th valve (12); Be connected by the air inlet of conduit between described first valve (5) and second valve (6) with cooler (13); The outlet of described cooler (13) is connected by the inlet of conduit with separator (14); The liquid outlet of described separator (14) is connected with the 9th valve (17) and receiver (18) successively by conduit, and the liquid outlet of described receiver (18) is provided with the tenth valve (19); The gas outlet of described separator (14) is connected by the air inlet of conduit with pressue device (15); The gas outlet of described pressue device (15) is connected by the air inlet of conduit with heater (16), and the gas outlet of described heater (16) is connected between the 5th valve (9) and the 6th valve (10) by conduit; It is characterized in that: in described first adsorption tanks (1) and second adsorption tanks (2) 5A or 13X adsorbent are housed respectively.
6. the separator of heavy hydrocarbon in a kind of mist according to claim 5 is characterized in that: described cooler (13) adopts temperature to be lower than 25 ℃ water at low temperature but cold or cooling of refrigerator refrigeration or the cooling of throttling expansion refrigeration.
7. the separator of heavy hydrocarbon in a kind of mist according to claim 6 is characterized in that: the temperature of described low temperature water-cooled is 7 ℃.
8. the separator of heavy hydrocarbon in a kind of mist according to claim 7 is characterized in that: described separator (14) adopts inertial separation, the combination of isolated by filtration or inertia and isolated by filtration.
9. the separator of heavy hydrocarbon in a kind of mist according to claim 8 is characterized in that: described pressue device (15) is roots blower or compressor.
10. the separator of heavy hydrocarbon in a kind of mist according to claim 9 is characterized in that: described heater (16) adopts electrical heating or high-temperature steam heating or heat-conducting oil heating or waste heat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010013674A CN101732942A (en) | 2010-01-22 | 2010-01-22 | Method for separating heavy hydrocarbon in mixed gas and device thereof |
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| CN201010013674A CN101732942A (en) | 2010-01-22 | 2010-01-22 | Method for separating heavy hydrocarbon in mixed gas and device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204159A (en) * | 2012-02-01 | 2014-12-10 | 巴斯夫公司 | Heavy hydrocarbon removal process |
| CN105457457A (en) * | 2015-12-29 | 2016-04-06 | 杭州申邦净化设备有限公司 | Movable air blowing heating and regeneration adsorption type drying machine capable of being fully automatically controlled |
| CN110248720A (en) * | 2016-12-28 | 2019-09-17 | 环球油品有限责任公司 | Arrangement bed for adsorptive separation zone |
| CN112280605A (en) * | 2020-11-14 | 2021-01-29 | 安瑞科(蚌埠)压缩机有限公司 | High-pressure natural gas dealkylation device |
-
2010
- 2010-01-22 CN CN201010013674A patent/CN101732942A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204159A (en) * | 2012-02-01 | 2014-12-10 | 巴斯夫公司 | Heavy hydrocarbon removal process |
| CN104204159B (en) * | 2012-02-01 | 2017-05-17 | 巴斯夫公司 | Heavy hydrocarbon removal process |
| CN105457457A (en) * | 2015-12-29 | 2016-04-06 | 杭州申邦净化设备有限公司 | Movable air blowing heating and regeneration adsorption type drying machine capable of being fully automatically controlled |
| CN110248720A (en) * | 2016-12-28 | 2019-09-17 | 环球油品有限责任公司 | Arrangement bed for adsorptive separation zone |
| CN110248720B (en) * | 2016-12-28 | 2021-11-02 | 环球油品有限责任公司 | Finishing bed for adsorption separation area |
| CN112280605A (en) * | 2020-11-14 | 2021-01-29 | 安瑞科(蚌埠)压缩机有限公司 | High-pressure natural gas dealkylation device |
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Open date: 20100616 |