CN108079611B - A kind of intermediate reboiler step heating system based on absorption heat pump - Google Patents
A kind of intermediate reboiler step heating system based on absorption heat pump Download PDFInfo
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- CN108079611B CN108079611B CN201810126772.8A CN201810126772A CN108079611B CN 108079611 B CN108079611 B CN 108079611B CN 201810126772 A CN201810126772 A CN 201810126772A CN 108079611 B CN108079611 B CN 108079611B
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- heat pump
- reboiler
- pipeline
- fractionating column
- twin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
- B01D3/322—Reboiler specifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/04—Heat pumps of the sorption type
-
- 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
Abstract
The intermediate reboiler step heating system based on absorption heat pump that the invention discloses a kind of, including the big temperature rise heat pump of fractionating column, overhead condenser, return tank, double effect absorption type heat pump, single-effective absorption heat pump, twin-stage, No.1 intermediate reboiler, No. two intermediate reboilers, No. three intermediate reboilers and bottom reboiler.The present invention recycles tower top low-temperature material waste heat using process steam driving heat pump cycle, for heating fractionating column intermediate material, while using the combining form of three-level heat pump, realize intermediate material step temperature rising, the cooling of tower top material step, significantly improves fractionating column efficiency of energy utilization, reduces operating cost.
Description
Technical field
The present invention relates to oil refining technical field more particularly to a kind of intermediate reboiler steps based on absorption heat pump
Heating system.
Background technique
Petrochemical industry highly energy-consuming, high pollution, rectifying is as isolation technics most widely used in the sector, energy consumption
Account for 40% or more of petrochemical industry total energy consumption.Conventional fractionation processing disadvantages are as follows: tower top material waste heat is dissipated by overhead condenser
It loses in environment, a large amount of low-grade energies is caused to waste；The fractionating columns materials at bottom of tower works such as pure amine regeneration, depropanization, catalytic distillation
Make about 110 DEG C of temperature, generallys use the process steam heating that pressure is 0.3MPa or so, there are larger heat exchange for this heating method
The temperature difference, the entropy increasing for heating link is larger, and using energy source is unreasonable.If it is possible to recycle tower top material using process steam
Low grade residual heat prepares heat and is used for system itself, significant for energy saving of system.
Chinese Patent Application No. is 201310206921.9, and authorized announcement date is on March 4th, 2015, patent name one
Kind hypothermia distillation device proposes to be used to heat materials at bottom of tower using absorption heat pump recycling tower top material waste heat, but by heat pump system
The limitation of hot temperature, which are simply possible to use in low temperature distillation, are of limited application；Chinese Patent Application No. is
201410483273.6, authorized announcement date is on June 15th, 2016, and patent name is that a kind of pair of gas fractionator inlet feed is pre-
The step heating means and heating system of heat propose to be used to carry out inlet feed using absorption heat pump recycling tower top waste heat pre-
Heat treatment, but inlet feed temperature increases influence tower bottom reflux ratio, and system energy efficiency is only capable of raising 15%.
Summary of the invention
The intermediate reboiler step heating system based on absorption heat pump that the purpose of the present invention is to propose to a kind of solves existing
Energy waste problem caused by being mismatched in process flow due to low grade residual heat discharge, heat exchange.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of intermediate reboiler step heating system based on absorption heat pump of the present invention, including fractionating column, overhead condensation
The big temperature rise heat pump of device, return tank, double effect absorption type heat pump, single-effective absorption heat pump, twin-stage, No.1 intermediate reboiler, in No. two
Between reboiler, No. three intermediate reboilers and bottom reboiler；
It is connected with overhead product material pipe at the top of the fractionating column, it is defeated that overhead product material pipe through threeway is divided into two
Pipeline out, one of output pipe are connected by the overhead condenser with the entrance of the return tank；Another efferent duct
Road is connected with the evaporator inlet of the big temperature rise heat pump of the twin-stage, and the evaporator outlet of the big temperature rise heat pump of twin-stage passes through tower top
Product material pipe is connected with the evaporator inlet of the single-effective absorption heat pump, and the evaporator of the single-effective absorption heat pump goes out
Mouth is connected by overhead product material pipe with the evaporator inlet of the double effect absorption type heat pump, the double effect absorption type heat pump
Evaporator outlet be connected with the entrance of the return tank by overhead product material pipe；The outlet of the return tank passes through tower
Top product material pipe is connected with the fractionating column, overhead product area respectively；
The bottom of the fractionating column is connected by bottom product material pipe with the entrance of the bottom reboiler, the tower
The outlet of bottom reboiler is connected by bottom product material pipe with fractionating column, and the bottom of the fractionating column passes through bottom product
Material pipe is connected with bottom product area；
The material import and export of the No.1 intermediate reboiler is connected to by No.1 intermediate material pipeline with the fractionating column, institute
The material import and export for stating No. two intermediate reboilers leads to No. two intermediate material pipelines and is connected to the fractionating column, and No. three centres are again
The material import and export of boiling device is connected to by No. three intermediate material pipelines with the fractionating column；
The absorber and condensator outlet of the big temperature rise heat pump of twin-stage pass through circulating water pipeline and No. three centres again
The circulating water intake for boiling device is connected, and the circulating water outlet of No. three intermediate reboilers passes through in circulating water pipeline and described No. two
Between the circulating water intake of reboiler be connected, the circulating water outlets of No. two intermediate reboilers passes through circulating water pipeline and described one
The circulating water intake of number intermediate reboiler is connected, and the circulating water outlet of the No.1 intermediate reboiler passes through circulating water pipeline and institute
The absorber and condenser inlet for stating double effect absorption type heat pump are connected, and the absorber and condenser of the double effect absorption type heat pump go out
Mouth is connected by circulating water pipeline with the absorber of the single-effective absorption heat pump and condenser inlet, the single-effective absorption heat
The absorber and condensator outlet of pump pass through the absorber and condenser inlet of circulating water pipeline and the big temperature rise heat pump of the twin-stage
It is connected；
Steam passes through the jet chimney hair with the steam inlet of the bottom reboiler, the double effect absorption type heat pump respectively
Raw device entrance, the generator inlet of the single-effective absorption heat pump, the big temperature rise heat pump of the twin-stage generator inlet be connected.
Further, circulating pump is provided on circulating water pipeline.
Further, the big temperature rise heat of the double effect absorption type heat pump generator, single-effective absorption heat pump generator, twin-stage
Pump generator is provided with condensate pipeline.
Further, the big temperature rise heat pump of the double effect absorption type heat pump, single-effective absorption heat pump, twin-stage is all made of steam
Type lithium bromide absorption type heat pump.
Further, the No.1 intermediate reboiler, No. two intermediate reboilers and No. three intermediate reboilers are from the top down
Sequentially to arrange, the double effect absorption type heat pump, single-effective absorption heat pump and the big temperature rise heat pump of twin-stage are sequentially arranged from the top down, and
The No.1 intermediate reboiler, No. two intermediate reboilers and No. three intermediate reboilers respectively with the double effect absorption type heat pump, list
It imitates absorption heat pump and the big temperature rise heat pump of twin-stage corresponds.
Compared with prior art, advantageous effects of the invention:
A kind of intermediate reboiler step heating system based on absorption heat pump of the present invention utilizes process steam acting ability
It drives heat pump cycle to recycle tower top low-temperature material waste heat, prepares heat intermediate material, while using by double effect absorption heat
The three-level heat pump form of the big temperature rise heat pump composition of pump, single-effective absorption heat pump, twin-stage, realizes intermediate material step temperature rising, tower top
The cooling of material step, and then realize the cascade utilization of system energy, fractionating column efficiency of energy utilization is significantly improved, technique is reduced and steams
25% or more steam consumption.
Detailed description of the invention
The invention will be further described for explanation with reference to the accompanying drawing.
Fig. 1 is that the present invention is based on the intermediate reboiler step heating system schematic diagrames of absorption heat pump；
Description of symbols: 1, fractionating column；2, overhead condenser；3, return tank；4, double effect absorption type heat pump；5, single-action is inhaled
Receipts formula heat pump；6, the big temperature rise heat pump of twin-stage；7, No.1 intermediate reboiler；8, No. two intermediate reboilers；9, No. three intermediate reboilers；
10, bottom reboiler；11, circulating pump；P1, overhead product material pipe；P2, bottom product material pipe；P3, jet chimney；
P4, circulating water pipeline；P5, No.1 intermediate material pipeline；P6, No. two intermediate material pipelines；P7, No. three intermediate material pipelines.
Specific embodiment
As shown in Figure 1, a kind of intermediate reboiler step heating system based on absorption heat pump, fractionating column 1, overhead condensation
The big temperature rise heat pump 6 of device 2, return tank 3, double effect absorption type heat pump 4, single-effective absorption heat pump 5, twin-stage, No.1 intermediate reboiler 7,
8, No. three intermediate reboilers 9 of No. two intermediate reboilers and bottom reboiler 10；
The top of the fractionating column 1 is connected with overhead product material pipe P1, and overhead product material pipe P1 is through three reduction of fractions to a common denominators
For two output pipes, one of output pipe is connected by the overhead condenser 2 with the entrance of the return tank 3；It is another
A output pipe is connected with the evaporator inlet of the big temperature rise heat pump 6 of the twin-stage, and the evaporator of the big temperature rise heat pump 6 of twin-stage goes out
Mouth is connected by overhead product material pipe P1 with the evaporator inlet of the single-effective absorption heat pump 5, the single-effective absorption
The evaporator outlet of heat pump 5 is connected by overhead product material pipe P1 with the evaporator inlet of the double effect absorption type heat pump 4,
The evaporator outlet of the double effect absorption type heat pump 4 is connected by overhead product material pipe P1 with the entrance of the return tank 3；
The outlet of the return tank 3 is connected with the fractionating column 1, overhead product area respectively by overhead product material pipe P1；
The bottom of the fractionating column 1 is connected by bottom product material pipe P2 with the entrance of the bottom reboiler 10,
The outlet of the bottom reboiler 10 is connected by bottom product material pipe P2 with fractionating column 1, the bottom of the fractionating column 1
It is connected by bottom product material pipe P2 with bottom product area；
The material import and export of the No.1 intermediate reboiler 7 is connected by No.1 intermediate material pipeline P5 and the fractionating column 1
Logical, the material import and export of No. two intermediate reboilers 8 leads to No. two intermediate material pipeline P6 and is connected to the fractionating column 1, described
The material import and export of No. three intermediate reboilers 9 is connected to by No. three intermediate material pipeline P7 with the fractionating column 1；
The absorber and condensator outlet of the big temperature rise heat pump 6 of twin-stage pass through circulating water pipeline P4 and No. three centres
The circulating water intake of reboiler 9 is connected, the circulating water outlets of No. three intermediate reboilers 9 by circulating water pipeline P4 with it is described
The circulating water intake of No. two intermediate reboilers 8 is connected, and the circulating water outlet of No. two intermediate reboilers 8 passes through circulating water pipeline
P4 is connected with the circulating water intake of the No.1 intermediate reboiler 7, and the circulating water outlet of the No.1 intermediate reboiler 7 is by following
Ring waterpipe P4 is connected with the absorber of the double effect absorption type heat pump 4 and condenser inlet, the double effect absorption type heat pump 4
Absorber and condensator outlet pass through the absorber and condenser inlet phase of circulating water pipeline P4 and the single-effective absorption heat pump 5
Even, the absorber and condensator outlet of the single-effective absorption heat pump 5 pass through circulating water pipeline P4 and the big temperature rise heat of the twin-stage
The absorber of pump 6 is connected with condenser inlet；
Steam by jet chimney P3 respectively with the steam inlet of the bottom reboiler 10, the double effect absorption type heat pump
4 generator inlet, the single-effective absorption heat pump 5 the big temperature rise heat pump 6 of generator inlet, twin-stage generator inlet be connected
It is logical.
Specifically, circulating pump 11 is provided on circulating water pipeline P4, the setting of circulating pump can effectively guarantee that water follows
The power of ring.
Big 6 generator of temperature rise heat pump of 4 generator of double effect absorption type heat pump, 5 generator of single-effective absorption heat pump, twin-stage
It is provided with condensate pipeline, is used for collection process steam condensation water.
The big temperature rise heat pump 6 of the double effect absorption type heat pump 4, single-effective absorption heat pump 5, twin-stage is all made of steam type lithium bromide
Absorption heat pump.
7, No. two intermediate reboilers 8 of the No.1 intermediate reboiler and No. three intermediate reboilers 9 are sequentially arranged from the top down,
The double effect absorption type heat pump 4, single-effective absorption heat pump 5 and the big temperature rise heat pump 6 of twin-stage are sequentially arranged from the top down, and described one
Number 7, No. two intermediate reboilers 8 of intermediate reboiler and No. three intermediate reboilers 9 respectively with the double effect absorption type heat pump 4, single-action
Absorption heat pump 5 and the big temperature rise heat pump 6 of twin-stage correspond.
The course of work of the invention is as follows:
The material process of circulation at the top of fractionating column: the overhead product material of the fractionating column 1 passes through overhead product materail tube
Road P1 is divided into the output of two output pipes through threeway, and a portion tower top material enters return tank 3 by overhead condenser 2
It is interior；Another part tower top material sequentially enters the evaporator, double of the evaporator of the big temperature rise heat pump 6 of twin-stage, single-effective absorption heat pump 5
The evaporator step cooling of absorption heat pump 4 is imitated, then is flowed back into return tank 3, the tower top material in return tank 3 is produced by tower top
Product material pipe P1 is delivered to fractionating column 1, overhead product area respectively.
The material process of circulation of fractionation column base: the bottom product material of fractionating column 1 passes through bottom product material pipe P2
It is two-way through distributing T-pipe, a portion materials at bottom of tower enters bottom product area, another portion through bottom product material pipe P2
Divide and enter the heating of bottom reboiler 10, the material after heating passes through bottom product material pipe P2 again and is back to the progress of fractionating column 1
Fractionation processing, process steam enter bottom reboiler 10 by jet chimney P3 and provide heat source for it.
Intermediate reboiler workflow: recirculated water passes sequentially through the absorption of double effect absorption type heat pump 4 by circulating water pipeline P4
Device and condenser, 5 absorber of single-effective absorption heat pump and big 6 absorber of temperature rise heat pump of condenser, twin-stage and condenser step liter
Temperature, then pass sequentially through 9, No. two intermediate reboilers 8 of No. three intermediate reboilers, the heating intermediate material of No.1 intermediate reboiler 7 and ladder
Grade cooling, the recirculated water after cooling are back to big 6 absorber of temperature rise heat pump of twin-stage and condenser by circulating pump 11, realize circulation
Water closed cycle；No. three intermediate materials enter No. three intermediate reboilers 9 by No. three intermediate material pipeline P7 and heat, after heating
Material is returned again to fractionating column, and No. two intermediate materials enter No. two intermediate reboilers 8 by No. two intermediate material pipeline P6 and heat,
Material after heating is returned again to fractionating column, and No.1 intermediate material enters among No.1 by No.1 intermediate material pipeline P7 to boil again
Device 7 heats, and the material after heating is returned again to fractionating column, and process steam respectively enters the big temperature rise heat of twin-stage by jet chimney P3
6 generators, 5 generator of single-effective absorption heat pump, 4 generator of double effect absorption type heat pump are pumped, provides driving heat source for heat pump cycle.
Double effect absorption type heat pump be suitable for heat temperature be 40~60 DEG C, single-effective absorption heat pump be suitable for heat temperature be 55~
75 DEG C, the big temperature rise heat pump of twin-stage be suitable for heat temperature be 75~95 DEG C, select suitable heat-pump apparatus to intermediate material carry out three
Grade heating.
It can be seen from the above that the present invention makes use of process steam driving three-level heat pump cycles to recycle tower top material waste heat, prepares heat
Step heats intermediate material, so that fractionating column efficiency of energy utilization improves 25%.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention
It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements, should all fall into claims of the present invention determine protection scope in.
Claims (5)
1. a kind of intermediate reboiler step heating system based on absorption heat pump, it is characterised in that: including fractionating column (1), tower
Push up condenser (2), return tank (3), double effect absorption type heat pump (4), single-effective absorption heat pump (5), the big temperature rise heat pump (6) of twin-stage,
No.1 intermediate reboiler (7), No. two intermediate reboilers (8), No. three intermediate reboilers (9) and bottom reboiler (10)；
It is connected with overhead product material pipe (P1) at the top of the fractionating column (1), overhead product material pipe (P1) is through threeway
It is divided into two output pipes, the entrance phase that one of output pipe passes through the overhead condenser (2) and the return tank (3)
Even；Another output pipe is connected with the evaporator inlet of the big temperature rise heat pump (6) of the twin-stage, the big temperature rise heat pump of twin-stage
(6) evaporator outlet is connected by pipeline with the evaporator inlet of the single-effective absorption heat pump (5), the single-effective absorption
The evaporator outlet of heat pump (5) is connected by pipeline with the evaporator inlet of the double effect absorption type heat pump (4), and the economic benefits and social benefits are inhaled
The evaporator outlet of receipts formula heat pump (4) is connected by pipeline with the entrance of the return tank (3)；The outlet of the return tank (3)
It is connected respectively with the fractionating column (1), overhead product area by pipeline；
The bottom of the fractionating column (1) passes through the entrance phase of bottom product material pipe (P2) and the bottom reboiler (10)
Even, the outlet of the bottom reboiler (10) is connected by pipeline with fractionating column (1), and the bottom of the fractionating column (1) passes through
Bottom product material pipe (P2) is connected with bottom product area；
The material inlet of the No.1 intermediate reboiler (7) is connected by No.1 intermediate material pipeline (P5) and the fractionating column (1)
Logical, outlet is connected to by pipeline with the fractionating column (1), and the material inlet of No. two intermediate reboilers (8) leads to No. two centres
Material pipe (P6) is connected to the fractionating column (1), exports and is connected to by pipeline with the fractionating column (1), No. three centres
The material inlet of reboiler (9) be connected to by No. three intermediate material pipelines (P7) with the fractionating column (1), export pass through pipeline and
Fractionating column (1) connection；
The absorber and condensator outlet of the big temperature rise heat pump (6) of twin-stage pass through circulating water pipeline (P4) and No. three centres
The circulating water intake of reboiler (9) is connected, and the circulating water outlet of No. three intermediate reboilers (9) passes through pipeline and described No. two
The circulating water intake of intermediate reboiler (8) is connected, the circulating water outlets of No. two intermediate reboilers (8) by pipeline with it is described
The circulating water intake of No.1 intermediate reboiler (7) is connected, the circulating water outlet of the No.1 intermediate reboiler (7) by pipeline with
The absorber and condenser inlet of the double effect absorption type heat pump (4) are connected, the absorber of the double effect absorption type heat pump (4) and
Condensator outlet is connected by pipeline with the absorber of the single-effective absorption heat pump (5) and condenser inlet, and the single-action is inhaled
The absorber and condensation that the absorber and condensator outlet of receipts formula heat pump (5) pass through pipeline and the big temperature rise heat pump (6) of the twin-stage
Device entrance is connected；
Steam by jet chimney (P3) respectively with the steam inlet of the bottom reboiler (10), the double effect absorption type heat pump
(4) generation of the big temperature rise heat pump (6) of generator inlet, the twin-stage of generator inlet, the single-effective absorption heat pump (5)
Device entrance is connected.
2. the intermediate reboiler step heating system according to claim 1 based on absorption heat pump, it is characterised in that: institute
State the circulating water outlet of No.1 intermediate reboiler (7) and the absorber and condenser inlet phase of the double effect absorption type heat pump (4)
Circulating pump (11) are provided on pipeline even.
3. the intermediate reboiler step heating system according to claim 1 based on absorption heat pump, it is characterised in that: institute
The generation of the big temperature rise heat pump (6) of generator, the twin-stage of the generator, single-effective absorption heat pump (5) of stating double effect absorption type heat pump (4)
Device is provided with condensate pipeline.
4. the intermediate reboiler step heating system according to claim 1 based on absorption heat pump, it is characterised in that: institute
It states the big temperature rise heat pump (6) of double effect absorption type heat pump (4), single-effective absorption heat pump (5), twin-stage and is all made of steam type lithium bromide absorption
Formula heat pump.
5. the intermediate reboiler step heating system according to claim 1 based on absorption heat pump, it is characterised in that: institute
No.1 intermediate reboiler (7), No. two intermediate reboilers (8) and No. three intermediate reboilers (9) are stated sequentially to arrange from the top down, it is described
Double effect absorption type heat pump (4), single-effective absorption heat pump (5) and the big temperature rise heat pump (6) of twin-stage are sequentially arranged from the top down, and described
No.1 intermediate reboiler (7), No. two intermediate reboilers (8) and No. three intermediate reboilers (9) are hot with the double effect absorption respectively
(4), single-effective absorption heat pump (5) and the big temperature rise heat pump (6) of twin-stage is pumped to correspond.
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| CN201810126772.8A CN108079611B (en) | 2018-02-08 | 2018-02-08 | A kind of intermediate reboiler step heating system based on absorption heat pump |
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| CN109762590B (en) * | 2019-02-19 | 2021-01-15 | 惠生工程（中国）有限公司 | Fractionation system and fractionation method |
| CN113289365B (en) * | 2021-07-01 | 2022-06-17 | 燕山大学 | Absorption heat pump rectification system based on intermediate reboiling and intermediate condensation |
| CN115487522B (en) * | 2022-09-06 | 2023-06-23 | 内蒙古东岳金峰氟化工有限公司 | Hydrogen fluoride purification system and process |
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| US4626321A (en) * | 1983-08-22 | 1986-12-02 | Trustees Of Dartmouth College | Distillation systems and methods |
| US7981256B2 (en) * | 2007-11-09 | 2011-07-19 | Uop Llc | Splitter with multi-stage heat pump compressor and inter-reboiler |
| NO330757B1 (en) * | 2008-09-02 | 2011-07-04 | Ola Heggen | Method of evaporation and possible distillation of liquids by means of heat pump |
| CN103670548A (en) * | 2013-12-04 | 2014-03-26 | 大连葆光节能空调设备厂 | Heat and power cogeneration central heating system based on heat pump |
| CN104383704B (en) * | 2014-09-19 | 2016-06-15 | 燕山大学 | A kind of step heating system to the preheating of gas fractionator inlet feed |
| CN106745421A (en) * | 2016-12-16 | 2017-05-31 | 常州大学 | A kind of multiple Intermediate Heat Exchanger rectification method treatment low concentration DMF waste water systems of band |
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