CN217712697U - Energy-saving multi-system energy recovery device - Google Patents
Energy-saving multi-system energy recovery device Download PDFInfo
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- CN217712697U CN217712697U CN202221429749.4U CN202221429749U CN217712697U CN 217712697 U CN217712697 U CN 217712697U CN 202221429749 U CN202221429749 U CN 202221429749U CN 217712697 U CN217712697 U CN 217712697U
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Abstract
The utility model discloses an energy-saving multi-system energy recovery device, which comprises a first high-pressure separator, wherein an inlet is communicated with a first coarse methanol conveying pipe, the top of the first conveying pipe is communicated with the first conveying pipe, the bottom of the first conveying pipe is communicated with a second conveying pipe, and the second conveying pipe is communicated with a conveying header pipe; the inlet of the second high-pressure separator is communicated with a second crude methanol conveying pipe, the top of the second high-pressure separator is communicated with a third conveying pipe, the bottom of the second high-pressure separator is communicated with a fourth conveying pipe, and the fourth conveying pipe is also communicated with a conveying main pipe; an inlet of the hydraulic turbine is communicated with the conveying main pipe through a fifth conveying pipe and used for converting the pressure of liquid fed into the hydraulic turbine into kinetic energy to drive a generator to generate electricity, a shell side outlet of the hydraulic turbine is connected with a sixth conveying pipe, and an impeller outlet of the hydraulic turbine is connected with a seventh conveying pipe; and an inlet of the flash tank is communicated with a sixth conveying pipe, an eighth conveying pipe is arranged at the top of the flash tank, and a ninth conveying pipe is connected to the bottom of the flash tank. The utility model discloses realize the recycle of energy, reach the purpose of cost reduction increase.
Description
Technical Field
The utility model relates to a coal chemical industry equipment technical field, concretely relates to energy-saving multi-system energy recuperation device.
Background
The methanol synthesis process technology of Johnson Matthey (original Davy) with a pre-reactor in UK is two completely same series, and the device task is to send a low-temperature methanol washing section to a methanol synthesis section containing H2、CO、CO2Qualified raw material gas is synthesized into crude methanol under the action of a catalyst at a certain temperature and pressure.
The crude methanol passes through a high-pressure separator and enters a gas-liquid separator, a gas phase part is pressurized by a circulating gas compressor and returns to a system for recycling, a liquid phase is decompressed by a valve and enters a flash tank, the pressure is reduced from 6.5MPa to 0.7MPa to release gas dissolved in the methanol, and the decompressed liquid phase methanol is sent to a downstream rectification section or directly sent to a crude methanol tank to produce the crude methanol.
As shown in fig. 1, although the production flow chart given in the prior art can complete gas-liquid separation of crude methanol, and depressurize to release the gas dissolved in methanol and send the depressurized liquid phase methanol to a rectification section or a crude methanol tank to produce crude methanol, the methanol synthesis process has the problem that liquid phase fluid enters a flash tank from a high-pressure separator and is directly depressurized through a valve, which causes energy loss and increases production cost, so that the design of an energy-saving multi-system energy recovery device for recovering energy has great practical value.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem among the prior art, provide an energy-saving multisystem energy recuperation device.
The utility model provides an energy-saving multisystem energy recovery device, include: the inlet of the first high-pressure separator is communicated with a first crude methanol conveying pipe, the top of the first high-pressure separator is communicated with the first conveying pipe, the bottom of the first high-pressure separator is communicated with a second conveying pipe, and the second conveying pipe is communicated with a conveying main pipe; the inlet of the second high-pressure separator is communicated with a second crude methanol conveying pipe, the top of the second high-pressure separator is communicated with a third conveying pipe, the bottom of the second high-pressure separator is communicated with a fourth conveying pipe, and the fourth conveying pipe is also communicated with a conveying main pipe; an inlet of the hydraulic turbine is communicated with the conveying main pipe through a fifth conveying pipe and used for converting the pressure of liquid fed into the hydraulic turbine into kinetic energy to drive a generator to generate electricity, a shell side outlet of the hydraulic turbine is connected with a sixth conveying pipe, and an impeller outlet of the hydraulic turbine is connected with a seventh conveying pipe; and an inlet of the flash tank is communicated with a sixth conveying pipe, an eighth conveying pipe is arranged at the top of the flash tank, and a ninth conveying pipe is connected to the bottom of the flash tank.
Preferably, the second conveying pipe is respectively communicated with the conveying main pipe through two second conveying branch pipes which are arranged in parallel.
Preferably, the fourth conveying pipe is respectively communicated with the conveying main pipe through two fourth conveying branch pipes which are arranged in parallel.
Preferably, the second conveying branch pipe and the fourth conveying branch pipe are both provided with drain valves.
Preferably, valves are respectively arranged on the sixth conveying pipe, the seventh conveying pipe, the second conveying branch pipe and the fourth conveying branch pipe.
Preferably, the second conveying branch pipe and the fourth conveying branch pipe are respectively provided with a flow meter.
Preferably, the valve is an electrically controlled valve, and the electrically controlled valve is connected with the control system.
Preferably, the drain valve is an electrically controlled valve, and the electrically controlled valve is connected with the control system.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a pair of energy-saving multisystem energy recovery device is parallelly connected with two high-pressure liquid phase fluid pipelines in the system of producing same product, including two high-pressure vapour and liquid separators, a flash tank and one set of energy recuperation equipment, energy recuperation equipment's working medium entry and two parallelly connected high-pressure separators export through fifth conveyer pipe and delivery header intercommunication, energy recuperation equipment working medium export passes through sixth conveyer pipe with the entry of flash tank and communicates, the utility model discloses can retrieve two sets and above system medium-high pressure liquid phase fluid's pressure drop ability in step, be used for electricity generation or driving water pump operation with this energy, reduce the energy consumption in the methyl alcohol production process, the cost is saved promotes the competitiveness of enterprise under "two carbon two accuses" policy trends, realizes the recycle of energy, reaches the purpose of cost reduction increase.
2. The utility model provides a two sets of production systems through the synchronous recovered energy of parallel mode, multiplicable energy recuperation equipment power, single set system parking, do not influence equipment normal operating, reducible investment and occupation of land simultaneously if generate electricity recoverable power 402KWh, 382KWh of grid-connected electricity generation.
Drawings
FIG. 1 is a flow chart of a practical production process of the prior art.
FIG. 2 is a flow chart of the actual production process of the present invention
Description of reference numerals:
1. a first high pressure separator, 2, a first crude methanol transfer line, 3, a first transfer line, 4, a second transfer line, 5, a second high pressure separator, 6, a second crude methanol transfer line, 7, a third transfer line, 8, a fourth transfer line, 9, a transfer header, 10, a hydraulic turbine, 11, a fifth transfer line, 12, a sixth transfer line, 13, a seventh transfer line, 14, a flash tank, 15, an eighth transfer line, 16, a ninth transfer line, 17, a second transfer drop, 18, a fourth transfer drop.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying fig. 2, but it should be understood that the scope of the present invention is not limited by the following detailed description. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Examples
As shown in fig. 2, the utility model provides a pair of energy-saving multi-system energy recovery device, include: the inlet of the first high-pressure separator 1 is communicated with a first crude methanol conveying pipe 2, the top of the first high-pressure separator is communicated with a first conveying pipe 3, the bottom of the first high-pressure separator is communicated with a second conveying pipe 4, and the second conveying pipe 4 is communicated with a conveying header pipe 9; an inlet of the second high-pressure separator 5 is communicated with a second crude methanol delivery pipe 6, the top of the second high-pressure separator is communicated with a third delivery pipe 7, the bottom of the second high-pressure separator is communicated with a fourth delivery pipe 8, and the fourth delivery pipe 8 is also communicated with a delivery header pipe 9; an inlet of the hydraulic turbine 10 is communicated with the conveying main pipe 9 through a fifth conveying pipe 11 and is used for converting the pressure of liquid sent into the hydraulic turbine 10 into kinetic energy to drive a generator to generate electricity, a shell side outlet is connected with a sixth conveying pipe 12, and an impeller outlet is connected with a seventh conveying pipe 13; and the flash tank 14 is provided with an inlet communicated with the sixth conveying pipe 12, an eighth conveying pipe 15 is arranged at the top part, and a ninth conveying pipe 16 is connected to the bottom part.
Further, the second conveying pipe 4 is respectively communicated with the conveying main pipe 9 through two second conveying branch pipes 17 which are arranged in parallel.
Furthermore, the fourth conveying pipe 8 is respectively communicated with the conveying main pipe 9 through two fourth conveying branch pipes 18 which are arranged in parallel.
Furthermore, a drain valve is arranged on each of the second conveying branch pipe 17 and the fourth conveying branch pipe 18.
Furthermore, valves are respectively arranged on the sixth conveying pipe 12, the seventh conveying pipe 13, the second conveying branch pipe 17 and the fourth conveying branch pipe 18.
Furthermore, the second conveying branch pipe 17 and the fourth conveying branch pipe 18 are respectively provided with a flow meter.
Furthermore, the valve is an electric control valve, and the electric control valve is connected with a control system, and the control system is a DCS control system.
Furthermore, the drain valve is an electric control valve, and the electric control valve is connected with a control system, and the control system is a DCS (distributed control system).
The process principle is as follows:
the low-temperature methanol washing section is sent to contain H2、CO、CO2And synthesizing the qualified raw material gas into crude methanol under the conditions that the temperature is 240 ℃, the pressure is 6.7MPa and the catalyst is used. The synthesized crude methanol is sent into a first high-pressure separator 1 and a second high-pressure separator 5 which are arranged in parallel through a first crude methanol conveying pipe 2 and a second crude methanol conveying pipe 6 (the first high-pressure separator 1 and the second high-pressure separator 1 are separated in a high-pressure mode)The pressure of the device 5 is 6.2-6.5 MPa), the crude methanol respectively entering the first high-pressure separator 1 and the second high-pressure separator 5 is respectively subjected to gas-liquid separation, the separated gas phase part is respectively conveyed to a circulating gas compressor through a first conveying pipe 3 and a third conveying pipe 7 to be respectively pressurized and returned to a methanol synthesis system, the liquid separated out by the first high-pressure separator 1 is conveyed into a conveying main pipe 9 through the second conveying pipe 4 and two second conveying branch pipes 7 communicated with the second conveying pipe 4, the liquid separated out by the gas-liquid separation of the second high-pressure separator 5 is conveyed into the conveying main pipe 9 through a fourth conveying pipe 8 and two fourth conveying branch pipes 18 communicated with the fourth conveying pipe 8, the second conveying pipe 4, the fourth conveying pipe 8, the two second conveying branch pipes 7 and the two fourth conveying branch pipes 18 are in parallel relation, the shutdown of a single set of system can be realized, the normal operation of the single set of system is not influenced, the land occupation can be reduced, the liquid phase can be converted into a hydraulic power recovery turbine 10 through the second conveying branch pipes 4, the hydraulic power recovery turbine 10 can be realized, and the hydraulic power recovery turbine 10 can be further realized. After the pressure of the liquid phase working medium passing through the energy recovery equipment is reduced, the liquid phase working medium is conveyed into a low-pressure flash tank 14 through a sixth conveying pipe 12, dissolved gas is released, the released gas is conveyed into a methanol synthesis system through an eighth conveying pipe 15, and liquid in the low-pressure flash tank 14 (the pressure range value of the low-temperature flash tank 14 is 0.5-0.7 MPa) is discharged through a ninth conveying pipe 16.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An energy-saving multi-system energy recovery device, comprising:
the inlet of the first high-pressure separator (1) is communicated with the first crude methanol conveying pipe (2), the top of the first high-pressure separator is communicated with the first conveying pipe (3), the bottom of the first high-pressure separator is communicated with the second conveying pipe (4), and the second conveying pipe (4) is communicated with the conveying main pipe (9);
the inlet of the second high-pressure separator (5) is communicated with a second crude methanol delivery pipe (6), the top of the second high-pressure separator is communicated with a third delivery pipe (7), the bottom of the second high-pressure separator is communicated with a fourth delivery pipe (8), and the fourth delivery pipe (8) is also communicated with a delivery header pipe (9);
an inlet of the hydraulic turbine (10) is communicated with the conveying main pipe (9) through a fifth conveying pipe (11) and is used for converting the pressure of liquid sent into the hydraulic turbine (10) into kinetic energy to drive a generator to generate electricity, a shell side outlet is connected with a sixth conveying pipe (12), and an impeller outlet is connected with a seventh conveying pipe (13);
and the inlet of the flash tank (14) is communicated with the sixth conveying pipe (12), the top of the flash tank is provided with an eighth conveying pipe (15), and the bottom of the flash tank is connected with a ninth conveying pipe (16).
2. An energy saving multi-system energy recovery device according to claim 1, characterized in that the second transportation pipe (4) is respectively communicated with the transportation main pipe (9) through two second transportation branch pipes (17) arranged in parallel.
3. An energy saving multi-system energy recovery device according to claim 2, characterized in that the fourth conveying pipe (8) is respectively communicated with the conveying main pipe (9) through two fourth conveying branch pipes (18) arranged in parallel.
4. An energy saving multisystem energy recovery device according to claim 3, characterized in that the second transfer branch (17) and the fourth transfer branch (18) are provided with steam traps.
5. An energy saving multi-system energy recovery device according to claim 3, characterized in that valves are respectively arranged on the sixth conveying pipe (12), the seventh conveying pipe (13), the second conveying branch pipe (17) and the fourth conveying branch pipe (18).
6. An energy saving multi-system energy recovery device according to claim 3, characterized in that the second conveying branch pipe (17) and the fourth conveying branch pipe (18) are respectively provided with a flow meter.
7. The energy-saving multi-system energy recovery device according to claim 5, wherein the valve is an electrically controlled valve, and the electrically controlled valve is connected with the control system.
8. The energy saving multi-system energy recovery device as claimed in claim 4, wherein the trap is an electrically controlled valve, and the electrically controlled valve is connected to the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221429749.4U CN217712697U (en) | 2022-06-09 | 2022-06-09 | Energy-saving multi-system energy recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221429749.4U CN217712697U (en) | 2022-06-09 | 2022-06-09 | Energy-saving multi-system energy recovery device |
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| Publication Number | Publication Date |
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| CN217712697U true CN217712697U (en) | 2022-11-01 |
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| CN202221429749.4U Active CN217712697U (en) | 2022-06-09 | 2022-06-09 | Energy-saving multi-system energy recovery device |
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2022
- 2022-06-09 CN CN202221429749.4U patent/CN217712697U/en active Active
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