CN212741183U - Device for purifying propane by depropanizing tower with built-in plate reboiler - Google Patents
Device for purifying propane by depropanizing tower with built-in plate reboiler Download PDFInfo
- Publication number
- CN212741183U CN212741183U CN202021322969.8U CN202021322969U CN212741183U CN 212741183 U CN212741183 U CN 212741183U CN 202021322969 U CN202021322969 U CN 202021322969U CN 212741183 U CN212741183 U CN 212741183U
- Authority
- CN
- China
- Prior art keywords
- propane
- tower
- built
- reboiler
- depropanizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model provides a device for purifying propane by adopting a depropanizing tower with a built-in plate reboiler, which at least comprises a depropanizing tower and a depropanizing tower C4 +Hydrocarbon mixture water-cooling ware, top of the tower propane water-cooling ware, propane backward flow jar and propane backwash pump, be provided with raw materials entry on the upper portion lateral wall in the depropanizing tower, the top of the tower of depropanizing tower is provided with the gaseous phase export, is provided with the liquid phase export at the bottom of the tower, is provided with built-in plate reboiler in the depropanizing tower cauldron, the utility model discloses an install the bottom in the depropanizing tower as built-in plate reboiler to plate heat exchanger to avoided conventional shell and tube reboiler need set up solitary cauldron formula container, need draw the installation mode of depropanizing tower heating vaporization back again to the hydrocarbon mixture at the bottom of the tower, solved that conventional process flow is complicated, area is big and built on stilts installation inconvenience scheduling problem.
Description
Technical Field
The utility model belongs to natural gas processing field, concretely relates to natural gas ethane retrieves device that engineering depropanizer adopted built-in plate reboiler.
Background
Ethane is a high-quality raw material of ethylene, the production cost of ethylene prepared by cracking ethane is two thirds of that of naphtha, the ethylene raw material C2-C4 accounts for about 48% internationally, and China is restricted by the raw materials and mainly uses naphtha. The ethane product is recovered from the natural gas and is used as the raw material for preparing the ethylene by the steam thermal cracking, so that the method has positive significance for improving the yield of the ethylene product, reducing the energy consumption of an ethylene device, improving the quality and increasing the efficiency.
The depropanizer is a key device for producing product propane in natural gas ethane recovery engineering, and has the main function of completing the separation of propane and C4+ light hydrocarbon components, the feeding of the device is C4+ mixed hydrocarbon, and the quality index of the product propane at the tower top and the content of residual propane in the C4+ light hydrocarbon components at the tower bottom are controlled by heating reboiling of a heat-conducting oil reboiler at the tower bottom and cooling reflux of circulating water at the tower top.
The conventional tube-type reboiler needs to be provided with an independent kettle-type container, and needs to lead the mixed hydrocarbon at the bottom of the tower out of the depropanizing tower for heating and vaporization and then send the mixed hydrocarbon back to the depropanizing tower.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a method and a device for a depropanization tower to adopt a built-in plate reboiler.
The utility model discloses the technical scheme who adopts as follows:
a device for purifying propane by a depropanizing tower with a built-in plate reboiler at least comprises a depropanizing tower and a C4 +The device comprises a mixed hydrocarbon water cooler, a propane reflux pump, a tower top propane water cooler and a propane reflux tank, wherein a raw material inlet is formed in the side wall of the middle upper part of a depropanizing tower, a gas phase outlet is formed in the tower top of the depropanizing tower, a liquid phase outlet is formed in the tower bottom of the depropanizing tower, and a built-in plate reboiler is arranged in the tower kettle of the depropanizing tower;
C3 +the mixed hydrocarbon is communicated with a raw material inlet at the middle upper part of the depropanizing tower through a pipeline I to depropanizeA gas phase outlet at the top of the alkane tower is sequentially connected with a propane water cooler at the top of the tower and a propane reflux tank through a second pipeline, a gas phase outlet is arranged at the top of the propane reflux tank, a liquid phase outlet is arranged at the bottom of the propane reflux tank, and noncondensable gas is discharged from the gas phase outlet at the top of the propane reflux tank through a third pipeline; a liquid phase outlet at the bottom of the propane reflux tank is connected with an inlet of a propane reflux pump, the outlet of the propane reflux pump is divided into two paths, one path is connected with the depropanizing tower through a reflux pipeline, and the other path is connected with a liquefied gas spherical tank through a pipeline IV; the liquid phase outlet at the bottom of the depropanizing tower is connected with C4 +Inlet of hydrocarbon mixture water cooler, C4 +The outlet of the hydrocarbon-mixed water cooler outputs the product hydrocarbon mixture through a pipeline five.
Further, an oil inlet and an oil outlet are formed in the built-in plate type reboiler, the oil inlet of the built-in plate type reboiler is connected with high-temperature heat transfer oil through an oil inlet pipeline, the oil outlet of the built-in plate type reboiler is connected with low-temperature heat transfer oil through an oil outlet pipeline, and a temperature adjusting valve, a temperature detector and a check valve are arranged on the oil inlet pipeline.
Preferably, one end of the temperature detector is connected to the depropanizer, and the other end of the temperature detector is connected to the temperature regulating valve.
Further, said C3 +C is arranged on a first connecting pipeline between the mixed hydrocarbon and the upper raw material inlet in the depropanizing tower3 +Hydrocarbon mixture flowmeter and C3 +The mixed hydrocarbon flow rate regulating valve.
Further, a second connecting pipeline between a gas phase outlet at the top of the depropanizing tower and the propane water cooler at the top of the depropanizing tower is provided with a tower top pressure detector and a tower top pressure regulating valve; one end of the tower top pressure regulating valve is connected to a second pipeline between a gas phase outlet at the tower top of the depropanizing tower and the tower top propane water cooler, and the other end of the tower top pressure regulating valve is connected to the propane reflux tank;
a reflux tank pressure detector and a reflux tank pressure regulating valve are arranged on a pipeline III connected with a gas phase outlet at the top of the propane reflux tank; one end of the reflux tank pressure detector is connected to the propane reflux tank, and the other end of the reflux tank pressure detector is connected with the reflux tank pressure regulating valve.
Furthermore, a propane flow regulating valve and a propane flowmeter are arranged on a return pipeline between the propane reflux pump and the depropanizer;
a propane liquid level detector and a propane liquid level regulating valve are arranged on the fourth connecting pipeline between the propane reflux pump and the liquefied gas spherical tank; one end of the propane liquid level detector is connected to the propane reflux tank, and the other end of the propane liquid level detector is connected with the propane liquid level regulating valve.
Further, said C4 +A tower kettle liquid level detector and a tower kettle liquid level adjusting valve are arranged on a pipeline five at the outlet of the mixed hydrocarbon water cooler;
one end of the tower kettle liquid level detector is connected to the bottom side wall of the depropanizing tower, and the other end of the tower kettle liquid level detector is connected with the tower kettle liquid level adjusting valve.
Furthermore, the tower kettle of the depropanizing tower is provided with 2 relatively independent chambers, the upper parts of the 2 chambers are respectively communicated with the gas phase space at the upper part of the depropanizing tower, and the bottoms of the 2 chambers are communicated with a liquid phase.
Specifically, 2 cavities of the depropanization tower kettle are a reboiling cavity and a liquid storage cavity, an intermediate partition plate is arranged between the reboiling cavity and the liquid storage cavity, and the built-in plate-type reboiler is arranged in the reboiling cavity.
The utility model has the advantages as follows:
(1) the utility model discloses utilize plate reboiler (plate heat exchanger) heat exchange efficiency high, small characteristics, install plate heat exchanger in the bottom of depropanization tower as built-in plate reboiler to avoided conventional shell and tube reboiler need set up solitary cauldron formula container, need draw back the mounting means of depropanization tower heating vaporization after the hydrocarbon mixture at the bottom of the tower is drawn forth, solved that conventional process flow is complicated, area is big and built on stilts inconvenient scheduling problem of installation.
(2) The utility model discloses a setting up 2 relatively independent cavities at depropanization tower cauldron, a cavity is the reboiling chamber, and another is the stock solution chamber, and 2 cavity upper portion gas phase spaces communicate with each other, and the bottom liquid phase communicates with each other, and intermediate bottom is used for cutting off the unstability hydrocarbon mixture of boiling, makes stock solution chamber liquid layer stable to ensure liquid level detection's accuracy.
(3) The built-in plate reboiler submerges below the hydrocarbon mixing liquid level in the reboiling cavity, and the hydrocarbon mixture filled from the upper part of the depropanizing tower firstly enters the reboiling cavity and is discharged from the liquid storage cavity. The utility model discloses can popularize and be applied to all rectifying columns, can simplify reboiling flow and reduce the degree of difficulty of installation, reduce area and sparingly invest in simultaneously.
The above description is only an overview of the technical solution of the present invention, and in order to clearly understand the technical means of the present invention and to implement the technical solution according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the process of the present invention.
Description of reference numerals:
1. boundary exterior C3 +Mixing hydrocarbons; 2. c3 +A hydrocarbon mixture flow meter; 3. c3 +A hydrocarbon mixture flow rate regulating valve; 4. high-temperature heat conducting oil; 5. a temperature regulating valve; 6. a temperature detector; 7. a check valve; 8. low-temperature heat conducting oil; 9. a depropanizer; 10. a plate-type reboiler is arranged inside; 11. out of tower C4 +Mixing hydrocarbons; 12. a tower kettle liquid level detector; 13. c4 +A hydrocarbon-mixed water cooler; 14. c4 +A hydrocarbon mixture flow rate regulating valve; 15. product C4 +Mixing hydrocarbons; 16. a tower top pressure detector; 17. a propane water cooler; 18. a tower top pressure regulating valve; 19. a propane reflux tank; 20. reflux tankA pressure detector; 21. a reflux drum pressure regulating valve; 22. non-condensable gas; 23. a propane liquid level detector; 24. a propane flow regulating valve; 25. a propane flow meter; 26. a propane reflux pump; 27. a propane liquid level regulating valve; 28. a liquefied gas spherical tank.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The first embodiment:
the present embodiment relates to an apparatus for purifying propane using a depropanizer with a built-in plate reboiler, which comprises at least a depropanizer 9, C4 +The system comprises a mixed hydrocarbon water cooler 13, a propane reflux pump 26, a tower top propane water cooler 17 and a propane reflux tank 19, wherein a raw material inlet is formed in the side wall of the middle upper part of a depropanizing tower 9, a gas phase outlet is formed in the tower top of the depropanizing tower 9, a liquid phase outlet is formed in the tower bottom, and a built-in plate reboiler 10 is arranged in the tower kettle of the depropanizing tower 9;
C3 +the mixed hydrocarbon 1 passes through the first pipeline and the middle upper part of the depropanizing tower 9The raw material inlet of the depropanizing tower 9 is communicated, a gas phase outlet at the top of the depropanizing tower 9 is sequentially connected with a propane water cooler 17 at the top of the tower and a propane reflux tank 19 through a second pipeline, a gas phase outlet is arranged at the top of the propane reflux tank 19, a liquid phase outlet is arranged at the bottom of the propane reflux tank 19, and a gas phase outlet at the top of the propane reflux tank 19 discharges noncondensable gas 22 through a third pipeline; a liquid phase outlet at the bottom of the propane reflux tank 19 is connected with an inlet of a propane reflux pump 26, an outlet of the propane reflux pump 26 is divided into two paths, one path is connected with the depropanizer 9 through a reflux pipeline, and the other path is connected with a liquefied gas spherical tank 28 through a pipeline IV; the liquid phase outlet at the bottom of the depropanizing tower 9 is connected with C4 +Inlet of hydrocarbon mixture water cooler 13, C4 +The outlet of the hydrocarbon mixture water cooler 13 outputs the product hydrocarbon mixture 15 through the pipeline five.
The utility model discloses a plate heat exchanger is as depropanization tower reboiler at the bottom of the tower, utilize plate heat exchanger heat exchange efficiency high, small characteristics, install plate heat exchanger in the bottom of depropanization tower as built-in reboiler, thereby avoided conventional shell and tube reboiler need set up solitary cauldron formula container, need draw the mounting means of depropanization tower heating vaporization back refeed back depropanization tower to the hydrocarbon mixture at the bottom of the tower, this mounting means has strict requirement to the mounting height of cauldron formula reboiler and depropanization tower, require the two liquid level to keep certain difference in height and need go out the tower, it forms hot siphon natural circulation to advance the hydrocarbon mixture of tower, this mode has technological process complicacy, area is big and the built on stilts shortcoming such as installation inconvenience.
Second embodiment:
the first embodiment of the utility model relates to a method for purifying propane by adopting a depropanizing tower with a built-in plate reboiler, which comprises the following steps with reference to fig. 1:
s1, C coming from outside the boundary area3 +After the metering adjustment of the mixed hydrocarbon 1, introducing the mixed hydrocarbon into the middle part of a depropanizing tower 9;
s2, C of introducing the step S1 into the depropanizer 93 +The mixed hydrocarbon 1 is divided into a gas phase and a liquid phase in the tower, and the liquid phase descends and contacts with the ascending gas phase in a reverse direction for mass transfer and heat transfer;
s3, heating the mixed hydrocarbon at the bottom of the depropanizer 9 in the step S2 by an internal plate reboiler 10, wherein the temperature is heated from 40 ℃ to 80-90 ℃;
s4, cooling the gaseous propane led out from the top of the depropanizer 9 in the step S2 by circulating water, wherein the temperature is cooled from 50 ℃ to 39-41 ℃;
s5, introducing the propane cooled in the step S4 into a propane reflux tank 19 for buffer storage;
s6, introducing the propane buffered and stored in the step S5 into a propane reflux pump 26 for pressurization, wherein the pressurized propane is divided into two paths, and one path is metered and adjusted and then returns to the upper part of a depropanizing tower 9 to control the temperature of the top of the depropanizing tower 9 to be 43-45 ℃; the other path is used as the output of the propane product after the liquid level of the reflux tank is controlled;
s7, extracting the liquid C from the bottom of the depropanizer 9 in the step S24 +And cooling the mixed hydrocarbon 11 by circulating water, cooling the mixed hydrocarbon from 80-90 ℃ to 40 ℃, controlling the liquid level of a tower bottom of the depropanizing tower 9, and outputting the mixed hydrocarbon as a mixed hydrocarbon product.
The method of adopting built-in board-like reboiler depropanizer to purify propane can greatly simplify the process flow of natural gas ethane recovery engineering depropanizer reboiler, improves the stability of device operation, can improve heat exchange efficiency and reduce the energy consumption, can reduce area and save investment, improves natural gas ethane recovery engineering economic benefits.
The third embodiment:
on the basis of the first embodiment, further, the built-in plate type reboiler 10 is provided with an oil inlet and an oil outlet, the oil inlet of the built-in plate type reboiler 10 is connected with the high temperature heat transfer oil 4 through an oil inlet pipeline, the oil outlet of the built-in plate type reboiler 10 is connected with the low temperature heat transfer oil 8 through an oil outlet pipeline, and the oil inlet pipeline is provided with a temperature regulating valve 5, a temperature detector 6 and a check valve 7. Specifically, one end of the temperature detector 6 is connected to the depropanizer 9, and the other end of the temperature detector 6 is connected to the temperature regulating valve 5. The tower bottom temperature detector 17 and the heat-conducting oil temperature regulating valve 27 form a temperature regulating loop.
Further, said C3 +Mix hydrocarbon 1 with the middle upper part of depropanizer 9A connecting pipeline I between the material inlets is provided with a C3 +Hydrocarbon mixture flowmeters 2 and C3 +The hydrocarbon mixture flow rate adjusting valve 3.
A second connecting pipeline between a gas phase outlet at the top of the depropanizing tower 9 and the propane water cooler 17 at the top of the tower is provided with a tower top pressure detector 16 and a tower top pressure regulating valve 18; specifically, one end of the overhead pressure regulating valve 18 is connected to a second pipeline between a gas phase outlet at the top of the depropanizer 9 and the overhead propane water cooler 17, and the other end of the overhead pressure regulating valve 18 is connected to a propane reflux tank 19.
A return tank pressure detector 20 and a return tank pressure regulating valve 21 are arranged on a pipeline III connected with a gas phase outlet at the top of the propane return tank 19; specifically, one end of the return tank pressure detector 20 is connected to the propane return tank 19, and the other end of the return tank pressure detector 20 is connected to the return tank pressure regulating valve 21.
A propane flow rate regulating valve 24 and a propane flow meter 25 are arranged on a return pipeline between the propane reflux pump 26 and the depropanizer 9.
A propane liquid level detector 23 and a propane liquid level regulating valve 27 are arranged on the fourth pipeline between the propane reflux pump 26 and the liquefied gas spherical tank 28; specifically, one end of the propane liquid level detector 23 is connected to the propane reflux tank 19, and the other end of the propane liquid level detector 23 is connected to the propane liquid level regulating valve 27;
said C is4 +A fifth pipeline at the outlet of the mixed hydrocarbon water cooler 13 is provided with a tower kettle liquid level detector 12 and a tower kettle liquid level regulating valve 14; specifically, one end of the tower bottom liquid level detector 12 is connected to the side wall of the tower bottom of the depropanizing tower 9, and the other end of the tower bottom liquid level detector 12 is connected to the tower bottom liquid level regulating valve 14.
Fourth embodiment:
on the basis of the above embodiment, it should be further explained that the tower bottom of the depropanizer 9 is provided with 2 relatively independent chambers, the upper parts of the 2 chambers are respectively communicated with the gas phase space at the upper part of the depropanizer 9, and the bottom parts of the 2 chambers are communicated with the liquid phase. Specifically, 2 cavities of the tower kettle of the depropanizing tower 9 are a reboiling cavity and a liquid storage cavity, an intermediate partition plate is arranged between the reboiling cavity and the liquid storage cavity and used for separating unstable boiling hydrocarbon mixture, so that a liquid layer of the liquid storage cavity is stable, and the accuracy of liquid level detection is ensured.
The built-in plate type reboiler 10 is arranged in a reboiling cavity, so that the installation mode that the conventional tube type reboiler needs to be provided with an independent kettle type container and the mixed hydrocarbon at the bottom of the tower needs to be led out of the depropanizing tower to be heated and vaporized and then sent back to the depropanizing tower is avoided, and the problems of complex conventional process flow, large occupied area, inconvenience in overhead installation and the like are solved.
Fifth embodiment:
the embodiment relates to a method for purifying propane by using a depropanizer with a built-in plate reboiler, which comprises the following steps:
s1, C coming from outside the boundary area3 +After the metering adjustment of the mixed hydrocarbon 1, introducing the mixed hydrocarbon into the middle part of a depropanizing tower 9;
s2, C of introducing the step S1 into the depropanizer 93 +The mixed hydrocarbon 1 is divided into a gas phase and a liquid phase in the tower, and the liquid phase descends and contacts with the ascending gas phase in a reverse direction for mass transfer and heat transfer;
s3, heating the mixed hydrocarbon at the bottom of the depropanizer 9 in the step S2 by an internal plate reboiler 10, wherein the temperature is heated from 40 ℃ to 80-90 ℃;
s4, cooling the gaseous propane led out from the top of the depropanizer 9 in the step S2 by circulating water, wherein the temperature is cooled from 50 ℃ to 39-41 ℃;
s5, introducing the propane cooled in the step S4 into a propane reflux tank 19 for buffer storage;
s6, introducing the propane buffered and stored in the step S5 into a propane reflux pump 26 for pressurization, wherein the pressurized propane is divided into two paths, and one path is metered and adjusted and then returns to the upper part of a depropanizing tower 9 to control the temperature of the top of the depropanizing tower 9 to be 43-45 ℃; the other path is used as the output of the propane product after the liquid level of the reflux tank is controlled;
s7, extracting the liquid C from the bottom of the depropanizer 9 in the step S24 +Cooling the mixed hydrocarbon 11 by circulating water, cooling the mixed hydrocarbon from 80-90 ℃ to 40 ℃, and controlling the liquid level of a tower bottom of a depropanizing tower 9 to obtain the mixed hydrocarbonAnd (5) transporting the mixed hydrocarbon product out.
And S8, dividing the gaseous propane led out from the top of the depropanizer 9 in the step S2 into 1 small stream of flow, and adjusting the pressure of the depropanizer by using an adjusting valve, wherein the pressure is controlled to be 1-2 MPa.
In addition, C is3 +The mixed hydrocarbon is composed of propane, butane, ethane and C5 +A hydrocarbon composition comprising 66.52% by mass of propane, 30.76% by mass of butane, 1.13% by mass of ethane and C5 +The hydrocarbon content was 1.58% by mass, and the pressure was 1.55 MPa.
The propane content of the product reaches 95.43%, and the pressure is 1.4 MPa.
C5 +The mixed hydrocarbon is composed of propane, butane and C5 +Hydrocarbon composition of 12.42% by mass of propane, 83.04% by mass of butane and C5 +The hydrocarbon content was 5.54% by mass, and the pressure was 1.4 MPa.
The high-temperature heat conducting oil from outside is provided with an adjusting valve to heat the mixed hydrocarbon at the bottom of the depropanizing tower, and the temperature of the heat conducting oil is reduced from 230 ℃ to 180 ℃.
The application of the embodiment in actual production is as follows:
the raw material natural gas treatment capacity of the ancient natural gas treatment main plant in the Changqing oil field is 6000 multiplied by 104m3(d) 4 sets of liquid hydrocarbon recovery processing devices with the same scale are arranged at the pressure of 4.1MPa of the incoming gas and the temperature of 7-26 ℃, and the processing scale of a single set of device reaches 1500 multiplied by 104m3/d。
To sum up, the utility model provides a method and device of this kind of natural gas ethane recovery engineering depropanizer adoption built-in plate reboiler purification propane can regard as the supplementary supporting device of ancient natural gas ethane recovery engineering in the oil field of Changqing, can produce the propane product of different qualities, satisfies the society to the demand of propane, and liquid level propane schizolysis system propylene provides the industrial chemicals.
The utility model discloses a plate heat exchanger is as the built-in reboiler of depropanization tower in the natural gas ethane recovery engineering, can cancel the independent cauldron formula reboiler that depropanization tower bottom set up, but merge the reboiler to depropanization tower in, simplified the flow, also easily the installation, reduced the installation degree of difficulty, saved the equipment investment, the reference meaning of bringing to the simplification of similar project rectifying column equipment.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides an adopt device of built-in plate reboiler depropanization tower purification propane which characterized in that: the device at least comprises a depropanizing tower (9) and a component C4 +The device comprises a mixed hydrocarbon water cooler (13), a propane reflux pump (26), a tower top propane water cooler (17) and a propane reflux tank (19), wherein a raw material inlet is formed in the side wall of the middle upper part of a depropanizing tower (9), a gas phase outlet is formed in the tower top of the depropanizing tower (9), a liquid phase outlet is formed in the tower bottom, and a built-in plate reboiler (10) is arranged in the tower kettle of the depropanizing tower (9);
C3 +the mixed hydrocarbon (1) is communicated with a raw material inlet at the middle upper part of a depropanizing tower (9) through a first pipeline, a gas phase outlet at the top of the depropanizing tower (9) is sequentially connected with a propane water cooler (17) at the top of the depropanizing tower and a propane reflux tank (19) through a second pipeline, a gas phase outlet is arranged at the top of the propane reflux tank (19), a liquid phase outlet is arranged at the bottom of the propane reflux tank (19), and a gas phase outlet at the top of the propane reflux tank (19) discharges noncondensable gas (22) through a third pipeline; a liquid phase outlet at the bottom of the propane reflux tank (19) is connected with an inlet of a propane reflux pump (26), an outlet of the propane reflux pump (26) is divided into two paths, one path is connected with the depropanizing tower (9) through a reflux pipeline, and the other path is connected with a liquefied gas spherical tank (28) through a pipeline IV; the liquid phase outlet at the bottom of the depropanizing tower (9) is connected with C4 +Inlet of hydrocarbon mixture water cooler (13), C4 +The outlet of the mixed hydrocarbon water cooler (13) passes through a pipeline fiveThe export product is mixed with hydrocarbons (15).
2. The device for purifying propane by using the depropanizer with the built-in plate reboiler as claimed in claim 1, wherein: be provided with oil inlet and oil-out on built-in plate reboiler (10), the oil inlet of built-in plate reboiler (10) is through advancing oil pipe connection high temperature conduction oil (4), and the oil-out of built-in plate reboiler (10) is through going out oil pipe connection low temperature conduction oil (8), it disposes temperature regulation valve (5), temperature detector (6) and check valve (7) on the oil pipe to advance.
3. The apparatus for purifying propane by using the depropanizer with built-in plate reboiler as claimed in claim 2, wherein: one end of the temperature detector (6) is connected to the depropanizer (9), and the other end of the temperature detector (6) is connected with the temperature regulating valve (5).
4. The device for purifying propane by using the depropanizer with the built-in plate reboiler as claimed in claim 1, wherein: said C is3 +C is arranged on a first connecting pipeline between the mixed hydrocarbon (1) and the upper raw material inlet in the depropanizing tower (9)3 +Hydrocarbon mixture flow meter (2) and C3 +The mixed hydrocarbon flow rate regulating valve (3).
5. The device for purifying propane by using the depropanizer with the built-in plate reboiler as claimed in claim 1, wherein: a second connecting pipeline between a gas phase outlet at the top of the depropanizing tower (9) and the propane water cooler (17) at the top of the depropanizing tower is provided with a tower top pressure detector (16) and a tower top pressure regulating valve (18); one end of the tower top pressure regulating valve (18) is connected to a second pipeline between a gas phase outlet at the tower top of the depropanizing tower (9) and the tower top propane water cooler (17), and the other end of the tower top pressure regulating valve (18) is connected to a propane reflux tank (19);
a return tank pressure detector (20) and a return tank pressure regulating valve (21) are arranged on a pipeline III connected with a gas phase outlet at the top of the propane return tank (19); one end of the reflux tank pressure detector (20) is connected to the propane reflux tank (19), and the other end of the reflux tank pressure detector (20) is connected with the reflux tank pressure regulating valve (21).
6. The device for purifying propane by using the depropanizer with the built-in plate reboiler as claimed in claim 1, wherein: a propane flow regulating valve (24) and a propane flowmeter (25) are arranged on a return pipeline between the propane reflux pump (26) and the depropanizer (9);
a propane liquid level detector (23) and a propane liquid level regulating valve (27) are arranged on the fourth connecting pipeline between the propane reflux pump (26) and the liquefied gas spherical tank (28); one end of the propane liquid level detector (23) is connected to the propane reflux tank (19), and the other end of the propane liquid level detector (23) is connected with the propane liquid level regulating valve (27).
7. The device for purifying propane by using the depropanizer with the built-in plate reboiler as claimed in claim 1, wherein: said C is4 +A fifth pipeline at the outlet of the mixed hydrocarbon water cooler (13) is provided with a tower kettle liquid level detector (12) and a tower kettle liquid level regulating valve (14);
one end of the tower bottom liquid level detector (12) is connected to the side wall of the tower bottom of the depropanizing tower (9), and the other end of the tower bottom liquid level detector (12) is connected with the tower bottom liquid level regulating valve (14).
8. The device for purifying propane by using the depropanizer with the built-in plate reboiler as claimed in claim 1, wherein: the tower kettle of the depropanizing tower (9) is provided with 2 relatively independent chambers, the upper parts of the 2 chambers are respectively communicated with the gas phase space at the upper part of the depropanizing tower (9), and the bottoms of the 2 chambers are communicated with the liquid phase.
9. The apparatus for purifying propane by using the depropanizer with built-in plate reboiler as claimed in claim 8, wherein: one of 2 cavities of the tower kettle of the depropanizing tower (9) is a reboiling cavity, the other cavity is a liquid storage cavity, an intermediate partition plate is arranged between the reboiling cavity and the liquid storage cavity, and the built-in plate-type reboiler (10) is arranged in the reboiling cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021322969.8U CN212741183U (en) | 2020-07-08 | 2020-07-08 | Device for purifying propane by depropanizing tower with built-in plate reboiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021322969.8U CN212741183U (en) | 2020-07-08 | 2020-07-08 | Device for purifying propane by depropanizing tower with built-in plate reboiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212741183U true CN212741183U (en) | 2021-03-19 |
Family
ID=75020756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021322969.8U Active CN212741183U (en) | 2020-07-08 | 2020-07-08 | Device for purifying propane by depropanizing tower with built-in plate reboiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212741183U (en) |
-
2020
- 2020-07-08 CN CN202021322969.8U patent/CN212741183U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109897057B (en) | Device and method for separating organosilicon monomer methyl chlorosilane by using multi-effect rectification technology | |
| CN107106922A (en) | Distilling apparatus | |
| CN105964005B (en) | A kind of partition type MVR heat pump distillations are thermally integrated system | |
| CN102295967A (en) | Apparatus for continuously separating carbon dioxide from natural gas through hydrate method, and method thereof | |
| CN104787766B (en) | Heat energy utilization method and system in production of polysilicon | |
| CN107774201A (en) | A kind of reactor for optimizing temperature and its reaction process and application | |
| CN109438251A (en) | A kind of methanol vapor phase catalytic ammoniation method prepares the method and device thereof of trimethylamine | |
| CN101391152A (en) | Double-reboiler batch extraction rectification device and method using absorption heat pump | |
| CN212741183U (en) | Device for purifying propane by depropanizing tower with built-in plate reboiler | |
| CN105969439B (en) | A kind of natural gas processing plant's deoiling, dewatering device low temperature lime set treatment process and device | |
| CN105061187A (en) | A process for continuously producing m-toluic acid | |
| CN101985349B (en) | Production method for preparing deuterium depleted water | |
| CN109810132B (en) | Device and method for separating organosilicon monomer methyl chlorosilane by using cyclic multi-effect rectification technology | |
| CN111777484B (en) | Device and method for purifying propane by adopting depropanizer with built-in plate reboiler | |
| CN107400541A (en) | A kind of final stage is using isothermal reactor without circulation methanation process and system | |
| CN104593057B (en) | A kind of delayed coking unit of low energy consumption | |
| CN102443420B (en) | Crude oil deep vacuum distillation process and system | |
| CN212431495U (en) | Device for energy utilization in a demethanizer with a plurality of flow plate-fin reboilers | |
| CN102134080B (en) | Heat-pump energy-saving separating device for extracting trichlorosilane by adopting static mixing booster and method | |
| CN201670808U (en) | Energy saving device using low-temperature waste water to vaporize propylene depolymerized oil column feedstock in a step way | |
| CN109721054A (en) | The production method and device of scale electronic grade high-purity carbon dioxide | |
| CN102502697B (en) | Method for recovering ammonia in morpholine solution | |
| CN212440104U (en) | Rectification heat energy closed circulation energy-saving system | |
| CN212425914U (en) | Device for controlling condensation rate of gaseous ethane at top of deethanizer | |
| CN106316800B (en) | A kind of low power consuming by preparing dimethyl ether from methanol method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |