CN219140817U - Low-temperature flare gas condensate vaporization and heating system - Google Patents
Low-temperature flare gas condensate vaporization and heating system Download PDFInfo
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- CN219140817U CN219140817U CN202320057053.1U CN202320057053U CN219140817U CN 219140817 U CN219140817 U CN 219140817U CN 202320057053 U CN202320057053 U CN 202320057053U CN 219140817 U CN219140817 U CN 219140817U
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Abstract
The utility model discloses a low-temperature flare gas condensate vaporization and heating system, which comprises a base, wherein the outer wall of the top of the base is fixedly connected with a support, the inner wall of the top of the support is fixedly connected with a liquid separating tank, and the outer wall of the circumference of the liquid separating tank is fixedly connected with an inlet; the top surface of base is provided with vaporization portion and heating portion, and vaporization portion comprises vice vaporizer and the main vaporizer of being fixed in proper order on the base top surface, and the vice vaporizer and the main vaporizer outer wall fixedly connected with same outlet duct that are located the top, the circumference outer wall fixedly connected with check valve A of outlet duct, the vice vaporizer and the main vaporizer outer wall fixedly connected with same liquid return pipe that are located the below, the circumference outer wall fixedly connected with check valve B of liquid return pipe. According to the utility model, the low-temperature flare gas can be vaporized, meanwhile, the phenomenon that the flare gas steam is frozen before being discharged is effectively avoided, and the later-stage heating of the flare gas is ensured.
Description
Technical Field
The utility model relates to the technical field of flare gas treatment, in particular to a low-temperature flare gas condensate vaporization and heating system.
Background
Ethylene and propylene are important in the chemical industry as basic chemical raw materials. In recent years, tens of large ethylene units and tens of large propylene units are newly built and expanded in China. In the start-up or accident state, a large amount of low-temperature flare gas containing ethylene and propylene is generated, and part of low-temperature liquid is entrained by the low-temperature flare gas, so that the low-temperature flare gas is not allowed to be directly sent to the flare tip for incineration from the safety and environmental protection and economical point of view, and therefore, the low-temperature flare gas is subjected to vaporization and heating treatment before entering the flare tip.
Through retrieval, the patent with the Chinese patent application number of CN201410337644.X discloses a low-temperature ethylene torch heating system, which mainly comprises a low-temperature ethylene heating vaporizer, a saturated water condensing tank and a condensate recycling tank, wherein the low-temperature ethylene heating vaporizer comprises a tube pass and a shell pass, ethylene is introduced into the tube pass, steam is introduced into the shell pass, and the low-temperature ethylene and the steam exchange heat in the low-temperature ethylene heating vaporizer. The low-temperature ethylene torch heating system in the patent has the following defects: the low-temperature flare liquid is too low (-99 ℃) and the wall temperature of the heat exchange tube is far lower than 0 ℃, so that the steam condensate can be frozen on the wall of the heat exchange tube without being discharged, and even the heat exchange tube can be blocked finally, and the flare gas cannot be heated. For this purpose, we propose a low temperature flare gas condensate vaporization and heating system.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a low-temperature flare gas condensate vaporization and heating system.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the low-temperature flare gas condensate vaporization and heating system comprises a base, wherein the outer wall of the top of the base is fixedly connected with a support, the inner wall of the top of the support is fixedly connected with a liquid separating tank, and the outer wall of the circumference of the liquid separating tank is fixedly connected with an inlet;
the top surface of the base is provided with a vaporization part and a heating part, the vaporization part consists of a secondary vaporizer and a primary vaporizer which are sequentially fixed on the top surface of the base, the outer walls of the secondary vaporizer and the primary vaporizer which are positioned above are fixedly connected with the same air outlet pipe, the circumferential outer wall of the air outlet pipe is fixedly connected with a one-way valve A, the outer walls of the secondary vaporizer and the primary vaporizer which are positioned below are fixedly connected with the same liquid return pipe, and the circumferential outer wall of the liquid return pipe is fixedly connected with a one-way valve B;
the outer wall of the bottom of the liquid separating tank and the outer wall of the circumference of the main vaporizer are fixedly connected with the same infusion catheter.
As still further aspects of the utility model: the circumferential outer wall of the auxiliary carburetor is fixedly connected with a liquid inlet; and the circumferential outer wall of the auxiliary carburetor is fixedly connected with a pressure gauge.
As still further aspects of the utility model: the heating part comprises a heater fixedly connected to the outer wall of the top of the base, an external pipe fixedly connected to the outer wall of one side of the heater, and a one-way valve C fixedly connected to the outer wall of the circumference of the external pipe.
As still further aspects of the utility model: the top outer wall of the base is fixedly connected with a steam storage tank, the air inlet end of the steam storage tank and the air outlet end of the main vaporizer are connected with the same air delivery conduit, and the circumferential outer walls of the air delivery conduit and the infusion conduit are fixedly connected with flow control valves.
As still further aspects of the utility model: the exhaust end of the steam storage tank and the air inlet of the heater are connected with the same air release pipe, and an automatic exhaust structure is arranged in the air release pipe.
As still further aspects of the utility model: the automatic exhaust structure comprises a fixed block fixed on the circumferential inner wall of the air release pipe, a sealing head inserted into the circumferential inner wall of the air release pipe, a guide post fixed on one end of the sealing head and in sliding fit with the inner wall of the air release pipe, and a spring fixedly connected to the opposite side surfaces of the fixed block and the sealing head.
As still further aspects of the utility model: the inner wall of the steam storage tank is provided with a heating cavity, the top end of the steam storage tank is fixedly connected with a heat preservation pipe communicated with the heating cavity, and the circumferential outer wall of the heat preservation pipe is fixedly connected with a one-way valve D.
As still further aspects of the utility model: the outer wall of the steam storage tank is provided with a thermometer.
The beneficial effects of the utility model are as follows:
1. the low-temperature flare gas condensate in the liquid separating tank is introduced into the main vaporizer from the infusion catheter by the vaporization part; then introducing methanol liquid from a liquid inlet into a secondary vaporizer for vaporization reaction, so that generated methanol vapor flows into a main vaporizer through an air outlet pipe to react with low-temperature flare gas condensate, thereby promoting low-temperature flare gas to rise temperature, and methanol after reaction exists in a liquid form and flows back into the secondary vaporizer through a liquid return pipe to be recovered, so that the condition of material waste is avoided, the methanol and the low-temperature flare gas form a closed loop circulation system, the situation that the low-temperature flare gas can be vaporized is ensured, meanwhile, the phenomenon that the flare gas vapor is frozen after being discharged is effectively avoided, and the flare gas can be heated in the later period is ensured.
2. The heat preservation pipe is connected with external heating structures such as a boiler, and the like, a one-way valve D can be opened in the later period of the production process, and hot gas is introduced into the heating cavity so as to preserve heat and the like of vaporized flare gas entering the steam storage tank, and avoid the secondary condensation of the vaporized flare gas due to refrigeration; the gasified flare gas flows into the gas storage tank for temporary storage through the gas transmission pipe, and is discharged to the heater through the gas discharge pipe for heating treatment after reaching the set pressure.
3. When the gas pressure in the gas storage tank is increased to reach a critical value, the gas pressure enters the gas release pipe and then pushes the movable sealing head to move forward along the inner wall of the gas release pipe through the guide pillar, so that the sealing head is separated from one end of the gas release pipe by a certain distance, and further, the vaporized flare gas in the gas storage tank is automatically discharged into the heater through the gas release pipe; on the contrary, when the gas in the gas storage tank is less and the gas pressure is lower, the sealing head is automatically attached to one end of the air release pipe under the drive of the spring and used for sealing the air release pipe, so that the condition of heat loss caused by long-time opening of the heater is avoided, and the change of the gas pressure in the gas storage tank is also convenient to automatically adjust.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the vaporization and heating system for low-temperature flare gas condensate provided by the utility model;
FIG. 2 is a schematic diagram of a partial cross-sectional side view of a vaporization and heating system for low temperature flare gas condensate;
FIG. 3 is a schematic diagram of a cross-sectional structure of a purge tube of the vaporization and heating system of the low temperature flare gas condensate provided by the utility model.
In the figure: 1 base, 101 support, 2 liquid separating tank, 201 inlet, 3 auxiliary vaporizer, 301 manometer, 4 main vaporizer, 5 heater, 501 outer connecting pipe, 6 steam storing tank, 601 thermometer, 602 heating cavity, 7 air discharging pipe, 701 fixed block, 702 spring, 703 guide pillar, 704 sealing head, 8 liquid return pipe, 9 air outlet pipe, 10 flow control valve, 11 steam discharging pipe, 12 heat preservation pipe.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.
Example 1
The low-temperature flare gas condensate vaporization and heating system comprises a base 1, wherein a support 101 is fixed on the outer wall of the top of the base 1 through bolts, a liquid separating tank 2 is fixed on the inner wall of the top of the support 101 through bolts, and an inlet 201 which is convenient for the low-temperature flare gas and condensate to enter is fixed on the outer wall of the circumference of the liquid separating tank 2 through bolts;
the top surface of the base 1 is provided with a vaporization part and a heating part, the vaporization part consists of a secondary vaporizer 3 and a primary vaporizer 4 which are sequentially fixed on the top surface of the base 1, the outer walls of the secondary vaporizer 3 and the primary vaporizer 4 which are positioned above are fixedly connected with an air outlet pipe 9 which is convenient for methanol gas to flow from the secondary vaporizer 3 into the primary vaporizer 4, the circumferential outer wall of the air outlet pipe 9 is fixedly provided with a one-way valve A through bolts, the outer walls of the secondary vaporizer 3 and the primary vaporizer 4 which are positioned below are fixedly connected with a liquid return pipe 8 which is convenient for recovering methanol liquid in the primary vaporizer 4 into the secondary vaporizer 3, and the circumferential outer wall of the liquid return pipe 8 is fixedly provided with a one-way valve B through bolts;
preferably, the circumferential outer wall of the auxiliary carburetor 3 is fixed with a liquid inlet which is convenient for methanol liquid to enter through bolts; the methanol liquid is introduced from the liquid inlet to the auxiliary vaporizer 3 for vaporization reaction, so that generated methanol vapor flows into the main vaporizer 4 through the air outlet pipe 9 to react with low-temperature flare gas condensate, thereby promoting the temperature of the low-temperature flare gas to rise, methanol after reaction exists in a liquid form and is returned to the auxiliary vaporizer 3 through the liquid return pipe 8 for recovery, the condition of material waste is avoided, the methanol and the low-temperature flare gas form a closed loop circulation system, and the structure effectively avoids icing of the low-temperature flare gas while ensuring that the low-temperature flare gas can be vaporized.
Further preferably, a pressure gauge 301 for detecting the pressure in the secondary carburetor 3 is fixed to the circumferential outer wall of the secondary carburetor 3 by bolts.
Further, it is preferable that the liquid separation tank 2 is located above the main carburetor 4; the outer wall of the bottom of the liquid separating tank 2 and the outer wall of the circumference of the main vaporizer 4 are fixedly connected with the same infusion catheter; so that the low-temperature flare gas condensate in the liquid separating tank 2 is introduced into the main vaporizer 4 for vaporization reaction.
To heat the vaporized flare gas; as shown in fig. 1-2, the heating part comprises a heater 5 fixed on the outer wall of the top of the base 1 through bolts, an outer connecting pipe 501 fixed on the outer wall of one side of the heater 5 through bolts, and a one-way valve C is fixed on the circumferential outer wall of the outer connecting pipe 501 through bolts; the flare gas is led into the heater 5 for heating reaction after being vaporized, the heater 5 is fixedly connected with an external structure by utilizing the external connecting pipe 501, and the one-way valve C is opened at the later stage so as to lead out the heated flare gas for use.
Working principle: the low-temperature flare gas condensate in the liquid separating tank 2 is introduced into the main vaporizer 4 from the infusion conduit; then introducing methanol liquid from a liquid inlet into the auxiliary vaporizer 3 for vaporization reaction, so that the generated methanol vapor flows into the main vaporizer 4 through an air outlet pipe 9 to react with low-temperature flare gas condensate, thereby promoting the temperature of the low-temperature flare gas to rise, and the reacted methanol exists in a liquid form and flows back into the auxiliary vaporizer 3 through a liquid return pipe 8 for recovery, thereby avoiding the condition of material waste and enabling the methanol and the low-temperature flare gas to form a closed-loop circulation system. The flare gas is led into the heater 5 for heating reaction after being vaporized, the heater 5 is fixedly connected with an external structure by utilizing the external connecting pipe 501, and the one-way valve C is opened at the later stage so as to lead out the heated flare gas for use.
Example 2
Referring to fig. 1-3, the present embodiment is complementary to embodiment 1 in terms of the following steps: the top outer wall of the base 1 is fixedly provided with a gas storage tank 6 through bolts, the gas inlet end of the gas storage tank 6 and the gas outlet end of the main vaporizer 4 are connected with the same gas transmission conduit, and the circumferential outer walls of the gas transmission conduit and the transfusion conduit are fixedly provided with a flow control valve 10 through bolts; the air outlet end of the steam storage tank 6 and the air inlet of the heater 5 are connected with the same air release pipe 7; the gasified flare gas flows into the gas storage tank 6 for temporary storage through the gas transmission pipe, and is discharged to the heater 5 through the gas discharge pipe 7 for heating treatment after reaching the set pressure.
A heating cavity 602 is formed in the inner wall of the steam storage tank 6, a heat preservation pipe 12 communicated with the heating cavity 602 is fixedly connected to the top end of the steam storage tank 6, and a one-way valve D is fixed to the circumferential outer wall of the heat preservation pipe 12 through bolts; the heat preservation pipe 12 is used for connecting external heating structures such as a boiler, a one-way valve D can be opened at the later stage of the production process, and hot gas is introduced into the heating cavity 602 so as to preserve heat and the like of vaporized flare gas entering the steam storage tank 6 and avoid the vaporized flare gas from being condensed again due to coldness.
Preferably, a thermometer 601 for measuring the temperature of the heating chamber 602 is arranged on the outer wall of the steam storage tank 6.
Further, an automatic exhaust structure is arranged in the air release pipe 7, and the automatic exhaust structure comprises a fixed block 701 fixed on the circumferential inner wall of the air release pipe 7, a sealing head 704 inserted into the circumferential inner wall of the air release pipe 7, a guide post 703 fixed on one end of the sealing head 704 and in sliding fit with the inner wall of the air release pipe 7, and a spring 702 welded on one side surface opposite to the fixed block 701 and the sealing head 704;
when the gas pressure in the gas storage tank 6 increases to reach a critical value, the gas pressure enters the gas release pipe 7 and then pushes the sealing head 704 to move forward along the inner wall of the gas release pipe 7 through the guide pillar 703, so that the sealing head 704 is separated from one end of the gas release pipe 7 by a certain distance, as shown in fig. 3, and further the vaporized flare gas in the gas storage tank 6 can be automatically discharged into the heater 5 through the gas release pipe 7; on the contrary, when the air pressure in the air storage tank 6 is lower, the sealing head 704 is automatically attached to one end of the air release pipe 7 under the drive of the spring 702 and is used for plugging the air release pipe, so that the heat loss caused by long-time opening of the heater 5 is avoided, and the air pressure change in the air storage tank 6 is also conveniently and automatically regulated.
Working principle: the gasified flare gas is poured into the steam storage tank 6 for temporary storage through a gas transmission pipe, the heat preservation pipe 12 is used for connecting external heating structures such as a boiler, a one-way valve D can be opened in the later period of the production process, and hot gas is introduced into the heating cavity 602 so as to preserve heat and the like of the gasified flare gas entering the steam storage tank 6 and avoid the re-condensation of the gasified flare gas caused by cold; when the gas pressure in the gas storage tank 6 increases to reach a critical value, the gas pressure enters the gas release pipe 7 and then pushes the sealing head 704 to move forward along the inner wall of the gas release pipe 7 through the guide pillar 703, so that the sealing head 704 is separated from one end of the gas release pipe 7 by a certain distance, as shown in fig. 3, and further the vaporized flare gas in the gas storage tank 6 can be automatically discharged into the heater 5 through the gas release pipe 7; on the contrary, when the air pressure in the air storage tank 6 is low, the sealing head 704 is automatically attached to one end of the air release pipe 7 under the drive of the spring 702 for plugging the air release pipe, so that the heat loss caused by long-time opening of the heater 5 is avoided.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. The low-temperature flare gas condensate vaporization and heating system comprises a base (1), and is characterized in that a support (101) is fixedly connected to the outer wall of the top of the base (1), a liquid separating tank (2) is fixedly connected to the inner wall of the top of the support (101), and an inlet (201) is fixedly connected to the outer wall of the circumference of the liquid separating tank (2);
the top surface of the base (1) is provided with a vaporization part and a heating part, the vaporization part consists of a secondary vaporizer (3) and a primary vaporizer (4) which are sequentially fixed on the top surface of the base (1), the outer walls of the secondary vaporizer (3) and the primary vaporizer (4) which are positioned above are fixedly connected with the same air outlet pipe (9), the circumferential outer wall of the air outlet pipe (9) is fixedly connected with a one-way valve A, the outer walls of the secondary vaporizer (3) and the primary vaporizer (4) which are positioned below are fixedly connected with the same liquid return pipe (8), and the circumferential outer wall of the liquid return pipe (8) is fixedly connected with a one-way valve B;
the outer wall of the bottom of the liquid separating tank (2) and the outer wall of the circumference of the main vaporizer (4) are fixedly connected with the same infusion catheter.
2. The low-temperature flare gas condensate vaporization and heating system according to claim 1, wherein the circumferential outer wall of the auxiliary vaporizer (3) is fixedly connected with a liquid inlet; the circumference outer wall of the auxiliary carburetor (3) is fixedly connected with a pressure gauge (301).
3. The low-temperature flare gas condensate vaporizing and heating system according to claim 2, wherein the heating part comprises a heater (5) fixedly connected to the top outer wall of the base (1), an external pipe (501) fixedly connected to the outer wall of one side of the heater (5), and a one-way valve C fixedly connected to the circumferential outer wall of the external pipe (501).
4. The low-temperature flare gas condensate vaporizing and heating system according to claim 1, wherein the top outer wall of the base (1) is fixedly connected with a gas storage tank (6), the gas inlet end of the gas storage tank (6) and the gas outlet end of the main vaporizer (4) are connected with the same gas delivery conduit, and the circumferential outer walls of the gas delivery conduit and the transfusion conduit are fixedly connected with flow control valves (10).
5. The low-temperature flare gas condensate vaporizing and heating system according to claim 4, wherein the gas outlet end of the gas storage tank (6) and the gas inlet of the heater (5) are connected with the same gas discharge pipe (7), and an automatic gas discharge structure is arranged in the gas discharge pipe (7).
6. The system of claim 5, wherein the automatic venting structure comprises a fixed block (701) fixed on the circumferential inner wall of the vent pipe (7), a sealing head (704) inserted on the circumferential inner wall of the vent pipe (7), a guide post (703) fixed on one end of the sealing head (704) and forming sliding fit with the inner wall of the vent pipe (7), and a spring (702) fixedly connected to the opposite side surfaces of the fixed block (701) and the sealing head (704).
7. The low-temperature flare gas condensate vaporization and heating system according to claim 6, wherein a heating cavity (602) is arranged on the inner wall of the steam storage tank (6), a heat preservation pipe (12) communicated with the heating cavity (602) is fixedly connected to the top end of the steam storage tank (6), and a one-way valve D is fixedly connected to the circumferential outer wall of the heat preservation pipe (12).
8. The low-temperature flare gas condensate vaporization and heating system of claim 7, wherein the outer wall of the vapor storage tank (6) is provided with a thermometer (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320057053.1U CN219140817U (en) | 2023-01-09 | 2023-01-09 | Low-temperature flare gas condensate vaporization and heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320057053.1U CN219140817U (en) | 2023-01-09 | 2023-01-09 | Low-temperature flare gas condensate vaporization and heating system |
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| Publication Number | Publication Date |
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| CN219140817U true CN219140817U (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320057053.1U Active CN219140817U (en) | 2023-01-09 | 2023-01-09 | Low-temperature flare gas condensate vaporization and heating system |
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| CN (1) | CN219140817U (en) |
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- 2023-01-09 CN CN202320057053.1U patent/CN219140817U/en active Active
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