CN207680078U - Process water stripper heat recovery unit - Google Patents
Process water stripper heat recovery unit Download PDFInfo
- Publication number
- CN207680078U CN207680078U CN201721680032.6U CN201721680032U CN207680078U CN 207680078 U CN207680078 U CN 207680078U CN 201721680032 U CN201721680032 U CN 201721680032U CN 207680078 U CN207680078 U CN 207680078U
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- heat
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- process water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model is related to a kind of process water stripper heat recovery units, including vapour compression machine, heat exchanger, vapor-liquid separation tank, heat-exchanger pump and switch board, the steam inlet of vapour compression machine is connected to by pipeline with unit vapor inlet port, steam (vapor) outlet is connected to by steam under pressure pipeline with the shell side inlet of heat exchanger, the shell-side outlet of heat exchanger is connected to by vapor-liquid separation tank steam inlet pipe road with the feed inlet of vapor-liquid separation tank, the vapor phase exit of vapor-liquid separation tank is connected to unit steam outlet, liquid-phase outlet is connected to by condensing water conduit with the water inlet of heat-exchanger pump, the water outlet of heat-exchanger pump is connected to unit condensation water output, the tube-side inlet of heat exchanger is connected to unit cold material input port, tube side outlet is connected to set heat exchange material delivery outlet, the operational monitoring of the unit and control mechanism concentrated setting are in switch board.The utility model can carry out process water stripper tower top vapour heat recycling and be recycled as bottom of tower heat source, save energy, reduce cost.
Description
Technical field
The utility model belongs to the technical field of process water stripper waste heat recovery, is stripped more particularly to a kind of process water
Tower heat recovery unit.
Background technology
Process water stripper is the important equipment in ethylene cracker, and main function is the hydro carbons that will be dissolved in process water
It is stripped off, realizes water-oil separating.The operating condition of process water stripper is more special, and bottom of tower liquid phase is purified technique
Water, tower exit temperature are about 110 DEG C, and tower bottom reboiler generally use low-pressure steam is as heat source.Overhead vapor phase is to be mixed with a small amount of hydrocarbon
The steam of class, about 111 DEG C of tower exit temperature, with bottom of tower gas phase almost without temperature difference.Tower top vapour enters quenching water column after going out tower, most
Eventually by the cooler cooling down of quenching water column tower top, the cooler is generally using cooling water as cooling medium.
In recent years, petroleum chemical enterprise increasingly payes attention to the comprehensive reutilization work of the energy, to improve capacity usage ratio, portion
Point enterprise attracts the disk oil of other workshop sections in ethylene cracker, the heat source as process water stripper tower bottom reboiler.But
The disk oil heat of quite a few enterprise is not rich, looks for and does not carry out suitable heat source, and tower bottom reboiler still uses steam to heat.
The heating of one side bottom of tower needs to expend a large amount of steam, and another aspect process water stripper tower top vapour contains a large amount of latent heat, but
Since its temperature, pressure are low, it is difficult to find suitable Land use systems, waste heat can only be allowed to and wasted, chilled water (chw) is also increased
The load of column overhead cooler consumes a large amount of cooling waters.
Invention content
The technical problem to be solved by the utility model is to provide a kind of process water stripper heat recovery unit, energy
It is enough that recycling is carried out as bottom of tower heat source recycling to process water stripper tower top vapour heat, energy is saved, cost is reduced.
Technical solution adopted by the utility model to solve its technical problems is provide a kind of process water stripper waste heat time
It receives and utilizes unit, including vapour compression machine, heat exchanger, vapor-liquid separation tank, heat-exchanger pump and switch board, the steaming of the vapour compression machine
The shell side inlet that vapour entrance is connected to by pipeline with unit vapor inlet port, steam (vapor) outlet passes through steam under pressure pipeline and heat exchanger
Connection, the shell-side outlet of the heat exchanger is connected to by vapor-liquid separation tank steam inlet pipe road with the feed inlet of vapor-liquid separation tank, described
The vapor phase exit of vapor-liquid separation tank is connected to unit steam outlet, liquid-phase outlet enters water by condensing water conduit and heat-exchanger pump
Water outlet and unit the condensation water output of mouth connection, the heat-exchanger pump are connected to, and the tube-side inlet and unit of the heat exchanger are cold
Material input connection, tube side outlet are connected to set heat exchange material delivery outlet, the operational monitoring of the unit and control mechanism collection
In be set in switch board.
The unit vapor inlet port is connect with process water stripper overhead vapours pipeline, the unit steam outlet and
Unit condensation water output is all connected to process water stripper overhead vapours original pass tubes.
Unit cold material input port is connect with process water stripper materials at bottom of tower outlet pipe, and the set heat exchange material is defeated
Outlet enters pipe with process water stripper bottom of tower heated material and connect.
Unit cold material input port is connect with process water stripper materials at bottom of tower outlet pipe, and the set heat exchange material is defeated
Outlet is connect with the outlet of the reboiler of process water stripper.
The vapour compression machine, heat exchanger, vapor-liquid separation tank, heat-exchanger pump and switch board are mounted on pedestal.
The heat exchanger is in parallel with former flow reboiler.
Advantageous effect
By the utility model, process water stripper overhead vapours can be introduced into unit carry out pressurization heating and with
The discharging heat exchange of process water stripper bottom of tower, then process water stripper bottom of tower is returned to using the material after heat exchange as heat source, on the one hand
Avoid process water stripper bottom of tower and consume a large amount of steam and heated, on the other hand to process water stripper overhead vapours into
It has gone recycling, has alleviated the load of former flow quenching water column cooler, reduce the usage amount of cooling water, save on the whole
About energy consumption, reduces cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of each package duct connection inside the utility model unit.
Fig. 2 is the structural schematic diagram that each component is installed to pedestal inside the utility model unit.
Fig. 3 is the structural schematic diagram that the utility model unit is connect with process water stripper.
Specific implementation mode
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
A kind of ethylene cracker process water stripper heat recovery unit as depicted in figs. 1 and 2, the device work
Skill water stripper overhead vapours temperature is 110 DEG C, pressure 145kPa, flow 12t/h, and column bottom temperature is 111 DEG C.
The unit is by pedestal 1, vapour compression machine 2, heat exchanger 3, vapor-liquid separation tank 4, heat-exchanger pump 5, switch board 6 and mating
Pipeline and pipe fitting composition.Vapour compression machine 2, heat exchanger 3, vapor-liquid separation tank 4, heat-exchanger pump 5 and switch board 6 are each attached to pedestal
On 1.2 feed inlet of vapour compression machine is connect by pipeline with unit vapor inlet port 7, and discharge port is connected by steam under pressure pipeline 8
Be connected to 3 shell side inlet of heat exchanger, 3 shell-side outlet of heat exchanger by vapor-liquid separation tank steam inlet pipe road 9 and 4 middle part of vapor-liquid separation tank into
Material mouth connects.3 tube-side inlet of heat exchanger and outlet are connected to unit cold material input port 10 and set heat exchange by pipeline respectively
Material delivery outlet 11.Liquid and vapor capacity outlet is respectively set in 4 top and bottom of vapor-liquid separation tank, and vapor phase exit is connected by pipeline
To unit steam outlet 12, liquid-phase outlet is connected to 5 entrance of heat-exchanger pump by condensing water conduit 13, and the outlet of heat-exchanger pump 5 passes through
Pipeline is connected to unit condensation water output 14.Mechanism concentrated setting is monitored and controlled in switch board 6 in unit operation.
The plan-position of each component of unit is as shown in Fig. 2, unit setting input, delivery outlet totally 5, respectively unit steam
Input port 7, unit steam outlet 12, unit cold material input port 10, set heat exchange material delivery outlet 11 and unit condensation
Water output 14.
Site for Unit mounting structure by 15 overhead vapours pipeline of process water stripper as shown in figure 3, be connected to unit steam
Input port 7, unit steam outlet 12, condensation water output 14 are connected to overhead vapours original pass tubes；By changing for unit
Hot device 3 is used as the second reboiler of bottom of tower, in parallel with former reboiler 16, and former bottom of tower goes out tower material pipe, and to be connected to unit cold material defeated
Entrance 10, unit cold material delivery outlet 11 are connected to bottom of tower as hot reflux condenser road.
Operating parameter is arranged at runtime, by switch board 6 in the unit, and carries out operation control.Process water stripper 15
Overhead vapours temperature is 110 DEG C, and pressure 145kPa is to be pressurized 70kPa, steam pressure by vapour compression machine 2 into after unit
It is respectively increased to 215kPa and 122 DEG C with temperature.Steam is exchanged heat with materials at bottom of tower by heat exchanger 3 after pressure-raising, is followed for bottom of tower heat
Ring provides heat source.For gas-vapor mix after steam heat-exchanging after the separation of vapor-liquid separation tank 4, vapour phase directly returns to overhead vapours original pipe
Line, liquid phase return to overhead vapours original pipeline after the pressurization of heat-exchanger pump 5.
The economic benefit that the unit can be generated is very considerable：For a set of 700,000 tons/year of ethylene cracker, use
The unit needs consumption electric energy 600kW per hour, can reduce former tower bottom reboiler steam consumption 12t/h, while reducing quenching water column
Recycle water consumption 720t/h.Steam price according to 120 yuan/t, 0.6 yuan/kWh of electricity price, 0.15 yuan/t of recirculated water, year run time
8400h, energy-saving benefit is up to 9,980,000 yuan/year.
Claims (6)
1. a kind of process water stripper heat recovery unit, including vapour compression machine (2), heat exchanger (3), vapor-liquid separation tank
(4), heat-exchanger pump (5) and switch board (6), it is characterised in that：The steam inlet of the vapour compression machine (2) passes through pipeline and unit
Vapor inlet port (7) connection, steam (vapor) outlet are connected to by steam under pressure pipeline (8) with the shell side inlet of heat exchanger (3), described to change
The shell-side outlet of hot device (3) is connected to by vapor-liquid separation tank steam inlet pipe road (9) with the feed inlet of vapor-liquid separation tank (4), the vapour
The vapor phase exit of liquid knockout drum (4) is connected to unit steam outlet (12), liquid-phase outlet passes through condensing water conduit (13) and heat
The water inlet of water pump (5) is connected to, and the water outlet of the heat-exchanger pump (5) is connected to unit condensation water output (14), the heat exchange
The tube-side inlet of device (3) is connected to unit cold material input port (10), tube side outlet connects with set heat exchange material delivery outlet (11)
Logical, the operational monitoring of the unit and control mechanism concentrated setting are in switch board (6).
2. a kind of process water stripper heat recovery unit according to claim 1, it is characterised in that：The unit
Vapor inlet port (7) is connect with process water stripper (15) overhead vapours pipeline, the unit steam outlet (12) and unit
Condensation water output (14) is all connected to process water stripper (15) overhead vapours original pass tubes.
3. a kind of process water stripper heat recovery unit according to claim 1, it is characterised in that：The unit
Cold material input port (10) is connect with process water stripper (15) materials at bottom of tower outlet pipe, the set heat exchange material delivery outlet (11)
Enter pipe with process water stripper (15) bottom of tower heated material to connect.
4. a kind of process water stripper heat recovery unit according to claim 1, it is characterised in that：The unit
Cold material input port (10) is connect with process water stripper (15) materials at bottom of tower outlet pipe, the set heat exchange material delivery outlet (11)
It is connect with the outlet of the reboiler (16) of process water stripper (15).
5. a kind of process water stripper heat recovery unit according to claim 1, it is characterised in that：The steam
Compressor (2), heat exchanger (3), vapor-liquid separation tank (4), heat-exchanger pump (5) and switch board (6) are mounted on pedestal (1).
6. a kind of process water stripper heat recovery unit according to claim 1, it is characterised in that：The heat exchange
Device (3) is in parallel with former flow reboiler (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680032.6U CN207680078U (en) | 2017-12-06 | 2017-12-06 | Process water stripper heat recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680032.6U CN207680078U (en) | 2017-12-06 | 2017-12-06 | Process water stripper heat recovery unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207680078U true CN207680078U (en) | 2018-08-03 |
Family
ID=62996357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721680032.6U Active CN207680078U (en) | 2017-12-06 | 2017-12-06 | Process water stripper heat recovery unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207680078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608609A (en) * | 2023-05-04 | 2023-08-18 | 浙江自贸区隆玥能源环境有限公司 | Compression absorption heat pump and application thereof |
-
2017
- 2017-12-06 CN CN201721680032.6U patent/CN207680078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608609A (en) * | 2023-05-04 | 2023-08-18 | 浙江自贸区隆玥能源环境有限公司 | Compression absorption heat pump and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 201206 No.58, Xinjinqiao Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai 24a1 Patentee after: SHANGHAI HUIDE ENERGY INTEGRATION TECHNOLOGY Co.,Ltd. Address before: 201206 24A1, room 58, new Jinqiao Road, China (Shanghai) free trade trial area, Pudong New Area, Shanghai. Patentee before: SHANGHAI HUIDE ENERGY INTEGRATION TECHNOLOGY Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |