CN206320954U - Ammonia still process column overhead ammonia vapour residual heat system is reclaimed using lithium bromide absorption type heat pump - Google Patents
Ammonia still process column overhead ammonia vapour residual heat system is reclaimed using lithium bromide absorption type heat pump Download PDFInfo
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- CN206320954U CN206320954U CN201621357147.7U CN201621357147U CN206320954U CN 206320954 U CN206320954 U CN 206320954U CN 201621357147 U CN201621357147 U CN 201621357147U CN 206320954 U CN206320954 U CN 206320954U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Abstract
The utility model is related to the ammonia steam treatment field in coking, propose one kind and reclaim ammonia still process column overhead ammonia vapour residual heat system using lithium bromide absorption type heat pump, ammonia steam outlet is connected in parallel dephlegmator and absorption heat pump by triple valve respectively, and ammonia steam outlet is connected in parallel evaporator inlet, heating plant high temperature side entrance and regenerator entrance by pipeline respectively；Ammonia steam after cooling is connected to gas-liquid separator by pipeline through evaporator outlet, heating plant high temperature side outlet and regenerator outlet.The low temperature side entrance of heating plant is connected with system heating water water return outlet, and the low temperature side outlet of heating plant is connected with system heating water delivery port, the switch valve provided with Heating Season and non-heating season in absorption type heat pump assembly.Lithium bromide absorption type heat pump is applied in ammonia steaming system reclaim ammonia vapour heat by the utility model, and producing more high-grade heat is used to distill or heating, so as to reduce the consumption of the energy.
Description
Technical field
The utility model is related to the ammonia steam treatment field in coking, and in particular to utilize the class of suction-type lithium bromide two
Heat pump reclaims ammonia still process column overhead ammonia vapour residual heat system.
Background technology
A wherein procedure of the coal in coking needs to carry out ammonia still process.Ammonia still process is by distilling in removing remained ammonia
Ammonia, cyanide and sulfide, improve waste water quality, meet phenol-cyanogen sewage treatment process requirement, while reclaim ammonia be used for desulfurization
Or production sulphur ammonium.Traditional remained ammonia ammonia distillation process is divided into by mode of heating to be steamed using vapor, coal gas, conduction oil
Ammonia, such a mode energy-output ratio is larger；Ammonia distillation process pressing force, which is distinguished, can be divided into normal pressure ammonia still process and negative pressure ammonia still process, no matter which kind of
Remained ammonia ammonia distillation process, the ammonia vapour heat of its tower top is largely indirectly emitted among air by cooling circulating water, is made
Into the waste of the energy, general tower top ammonia vapour takes away distillation heat consumption and accounts for 80-90%, and energy loss is huge.During another ammonia still process, tower
Bottom（Or distilled ammonia wastewater heater）Distillation heat is provided by heat source of coal gas, steam or conduction oil, this measure causes the energy
Consumption.Ammonia still process column overhead ammonia vapour heat energy is unrecovered to be utilized, while driving energy consumption and the water consume of cooling circulating water are added, reduction
Energy utilization rate.
Utility model content
The purpose of this utility model is to provide a kind of ammonia still process tower top ammonia steam heat recovery system, i.e., by lithium bromide absorption
Formula heat pump application reclaims ammonia vapour heat among coking ammonia steaming system, and producing more high-grade heat is used to distill or heating, replaces
It is used to heat distilled ammonia wastewater distillation for original steam, coal gas, conduction oil or the consumption energy carries out the mode of heating, so as to reduces
The consumption of the energy.
To achieve the above object, the technical solution adopted in the utility model is：Propose one kind and utilize suction-type lithium bromide
Heat pump reclaims ammonia still process column overhead ammonia vapour residual heat system, including ammonia still, dephlegmator, absorption type heat pump assembly and remained ammonia groove,
Ammonia steam outlet, remained ammonia addition mouth, distilled ammonia wastewater refluxing opening, liquid phase ammoniacal liquor refluxing opening and ammonia still process are provided with ammonia still
Waste water discharge opening, ammonia steam outlet is located at ammonia still process column overhead, and ammonia steam outlet is connected in parallel a point contracting by triple valve respectively
Device and absorption heat pump, dephlegmator outlet are connected with liquid phase ammoniacal liquor refluxing opening, saturator entrance or cooler entrance respectively, are absorbed
Formula source pump includes evaporator, absorber, regenerator, condenser and heating plant, and ammonia steam outlet passes through three-channel parallel
Intake line connect respectively on evaporator inlet, heating plant high temperature side entrance and regenerator entrance, three road intake lines point
The valve for controlling each intake line break-make is not provided with；Ammonia steam after cooling is by the output pipe of three-channel parallel through steaming
The outlet of hair device, heating plant high temperature side outlet and regenerator outlet are connected on gas-liquid separator, three road output pipes and set respectively
It is equipped with the valve for controlling each output pipe break-make, the liquid-phase outlet connection liquid phase ammoniacal liquor refluxing opening of gas-liquid separator, gas-liquid
The gaseous phase outlet connection saturator or cooler of separator；The low temperature side entrance of heating plant connects with system heating water water return outlet
Connect, the low temperature side outlet of heating plant is connected with system heating water delivery port.
The absorber entrance of the absorption heat pump connects distilled ammonia wastewater outlet by pipeline, and absorber outlet passes through pipe
Road connects distilled ammonia wastewater refluxing opening.
Distilled ammonia wastewater outlet connects the high temperature side entrance of remained ammonia heat exchanger, and the high temperature side of remained ammonia heat exchanger goes out
Mouth connection cooler, the low temperature side entrance of remained ammonia heat exchanger is connected with remained ammonia groove, the low temperature of remained ammonia heat exchanger
Side outlet is attached with mixer entrance, the remained ammonia addition mouth connection of mixer outlet and ammonia still.
Remained ammonia pump and purpose ceramic-film filter are provided between the remained ammonia groove and remained ammonia heat exchanger, it is remaining
Ammonia vessel is connected with remained ammonia pump intake, and remained ammonia pump discharge is connected with purpose ceramic-film filter entrance, purpose ceramic-film filter
Outlet is connected with the low temperature side entrance of remained ammonia heat exchanger, and low temperature side outlet and the mixer entrance of remained ammonia heat exchanger enter
The remained ammonia addition mouth connection of row connection, mixer outlet and ammonia still.
The thermal source of the ammonia still uses distilled ammonia wastewater heater or is arranged at the distillation driving heat source of bottom of towe.
The distilled ammonia wastewater heater connects distilled ammonia wastewater outlet, and outlet and the absorber of distilled ammonia wastewater heater are exported
Connection formation is confluxed pipeline, and the pipeline that confluxes is connected with distilled ammonia wastewater refluxing opening.
Air storage chamber and pumping heat exchanger are provided with the absorption heat pump, air storage chamber is connected with aspiration pump, gas storage
Chamber inlet is provided with eddy current type spiral spray head, and air storage chamber is connected by pipeline and evaporator, absorber, regenerator and condenser
Connect, the lithium bromide concentrated solution pipeline for connecting regenerator outlet connects the high temperature side entrance of pumping heat exchanger through solution pump, changes
Lithium bromide concentrated solution after heat is delivered to gas storage chamber inlet, pumping heat exchange by pumping with the high temperature side outlet of heat exchanger
The low temperature side entrance of device connects the cooling water inlet pipe road of absorption heat pump, and the cooling water after heat exchange is through pumping heat exchanger
Low temperature side outlet return is to cooling water outlet pipe road.
Air storage chamber and pumping heat exchanger are provided with the absorption heat pump, air storage chamber is connected with aspiration pump, gas storage
Chamber inlet is provided with eddy current type spiral spray head, and air storage chamber is connected by pipeline and evaporator, absorber, regenerator and condenser
Connect, the lithium bromide concentrated solution pipeline for connecting regenerator outlet connects the high temperature side entrance of pumping heat exchanger through solution pump, changes
Lithium bromide concentrated solution after heat is delivered to gas storage chamber inlet, pumping heat exchange by pumping with the high temperature side outlet of heat exchanger
The low temperature side entrance of device connects the coolant pipeline of condensator outlet, low temperature of the water as refrigerant through pumping heat exchanger after heat exchange
Side outlet is back in evaporator.
The evaporator, regenerator and heating installation inwall are provided with resistant to ammonia corrosion resistant coating.
The beneficial effects of the utility model are embodied in：
1）The utility model is on the premise of original ammonia steaming system keeps constant, a set of lithium bromide absorption type heat pump in parallel
System is used to reclaim tower top ammonia steam.Electric T-shaped valve is shunted in tower top configuration one, the triple valve acts on to play system switching.
One branch road of triple valve is attached with original system dephlegmator, and another branch road series connection suction-type lithium bromide two class source pump connects
Connect.Ammonia steam discharges the steam water interface after heat in the class heat pump of suction-type lithium bromide two, is carried out in gas-liquid separator
Separation, vapor phase ammonia goes to saturator and produces sulphur ammonium or be condensed into concentrated ammonia liquor product through ammonia vapour condensate cooler, and liquid phase ammoniacal liquor is returned
Phegma is used as in ammonia still.Dephlegmator is in parallel with absorption type heat pump system, when heat pump repair and maintenance, switches to former system
System cooling ammonia steam, to ensure that technique normal table is operated, ammonia steam discharges the steam water interface after heat in dephlegmator,
Vapor phase ammonia goes to saturator and produces sulphur ammonium or be condensed into concentrated ammonia liquor product through ammonia vapour condensate cooler, and liquid phase ammoniacal liquor returns to ammonia still
It is interior to be used as phegma.Tower top ammonia vapour heat is reclaimed using the utility model, reduces in former technique and is cooled down in dephlegmator, cooler
Cold required for ammonia vapour, that is, reduce the flow of cooling water, reduces the power consumption of water consume and attached pump group.
2）In non-warm season, the utility model recycles ammonia still process tower top ammonia vapour heat by the class heat pump of suction-type lithium bromide two
Measure for heating distilled ammonia wastewater, distilled ammonia wastewater, which is returned, provided in tower distillation heat, recycling for energy is realized, so as to reduce coal
The consumption of gas, steam or conduction oil.Original heating system and absorption heat pump progress are standby each other, when absorption heat pump maintenance
It is that distillation technique carries out concurrent heating when maintenance or inadequate offer heat；Absorption two classes heat pump directly heats distilled ammonia wastewater in steaming
Distilled in ammonia tower, distilled ammonia wastewater total amount will not be increased.Compared with using heat transmission equipment indirectly heat distilled ammonia wastewater, suction is utilized
The class heat pump of receipts formula two directly heats distilled ammonia wastewater and can reduce thermal loss and improve hot grade.
In warm season, exchanged heat using ammonia still process tower top ammonia steam heat and heating water, improve heating coolant-temperature gage, save former heating
Required driving heat.During due to non-heating season, the efficiency that heat pump produces distillation heat is 0.5 or so；During Heating Season, heat pump production
The efficiency of raw heating heat is close to 1, therefore Heating Season is compared with non-heating season, on the premise of identical waste heat is reclaimed, and produces
Heating heat be to distill 2 times of heat.Former heating system and the class heat pump of suction-type lithium bromide two are standby each other, are ensuring entirely
The stability of system.
3）The utility model uses a part of distilled ammonia wastewater to be heated to enter the remained ammonia before ammonia still, is it
Heat is provided, the driving heat that former heating distilled ammonia wastewater is used to distill is reduced, so as to reduce coal gas, steam or conduction oil
Consumption, improve the utilization rate of waste heat recovery.
4）Absorption two classes heat pump of the present utility model uses cooling water or cryogen water cooling air extractor, by each container
Incoagulable gas be recycled to by pipeline in air storage chamber, it is ensured that the vacuum performance of unit
5）The utility model only increases absorption heat pump, gas-liquid separator, and former ammonia still process main equipment, engineering are not influenceed
Amount is small, invests low, energy-saving benefit is preferable, and the technique is applied to steam ammonia still process, conduction oil ammonia still process and tube furnace ammonia still process, and promoting should
It is wider with scope.The residual neat recovering system is based on existing equipment, in parallel with original cooling ammonia vapour and distillation technique, standby each other,
Switched over using three-way valve etc., it is ensured that the stability of integrated artistic.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model（Ammonia still thermal source is that bottom of towe distills driving heat source）；
Fig. 2 is another form of structure chart of the present utility model（Ammonia still thermal source is distilled ammonia wastewater heater）；
Fig. 3 is absorption heat pump operation principle（Cool down water cooling air extractor）；
Fig. 4 is absorption heat pump operation principle（Cryogen water cooling air extractor）；
In figure：1 ammonia still, 2 triple valves, 3 absorption type heat pump assemblys, 4 gas-liquid separators, 5 dephlegmators, 6 coolers, 7 are remained
Remaining ammonia vessel, 8 remained ammonia pumps, 9 remained ammonia heat exchangers, 10 distilled ammonia wastewater pumps, 11 bottom of towe distillation heater, 12 ceramic membranes
Filter, 13 blenders, 14 saturators, 15 distilled ammonia wastewater heaters, 16 evaporators, 17 absorbers, 18 regenerators, 19 condensations
Device, 20 cryogen liquid-feeding pumps, 21 lithium-bromide solution pumps, 22 solution heat exchangers, 23 pumping heat exchangers, 24 aspiration pumps, 25 storages
Air chamber, 26 refrigerant cycle pumps, 27 heating plants.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings.
Utilization lithium bromide absorption type heat pump as shown in Figure 1 reclaims ammonia still process column overhead ammonia vapour residual heat system, including ammonia still
1st, dephlegmator 2, absorption type heat pump assembly 3 and remained ammonia groove 7.Ammonia steam outlet, remained ammonia is provided with ammonia still 1 to add
Plus mouth, distilled ammonia wastewater refluxing opening, liquid phase ammoniacal liquor refluxing opening and distilled ammonia wastewater outlet, ammonia steam outlet is positioned at ammonia still tower
Top, ammonia steam outlet is connected in parallel dephlegmator 5 and absorption heat pump 3 respectively by triple valve 2.In the ammonia steam of top of tower,
Switching is controlled by diversion three-way valve 2, two branch roads of triple valve 2 are respectively connected to the driving of absorption type heat pump assembly 3
Thermal source inlet end and the arrival end of dephlegmator 5.Wherein, after the ammonia steam in one branch road of triple valve is cooled down through dephlegmator 5, vapor phase ammonia
Water, which goes to saturator 14 and produces sulphur ammonium or deliver to, is condensed into concentrated ammonia liquor product in condensate cooler 6, liquid phase ammoniacal liquor is through liquid phase ammoniacal liquor
Refluxing opening is back to ammonia still 1.
As shown in figure 3, the ammonia steam in another branch road of triple valve connects steaming respectively by the intake line of three-channel parallel
Send out and control is separately provided on the entrance of device 16, the high temperature side entrance of heating plant 27 and the entrance of regenerator 18, three road intake lines
Make the valve of each intake line break-make；Ammonia steam is discharged after heat in absorption heat pump 3, passes through the output pipe of three-channel parallel
Export, the high temperature side outlet of heating plant 27 and the outlet of regenerator 18 are exported, set respectively on three road output pipes through evaporator 16
There is the valve for controlling each output pipe break-make, the ammonia steam condensate of output is delivered to gas-liquid separator 4, the gas phase after separation
Ammoniacal liquor, which goes to saturator 14 and produces sulphur ammonium or deliver to, is condensed into concentrated ammonia liquor product in cooler 6, the liquid phase ammoniacal liquor after separation is through liquid
Phase ammoniacal liquor refluxing opening is back to ammonia still 1.The low temperature side entrance of heating plant 27 is connected with system heating water return outlet, heating plant
27 low temperature side outlet is connected with system heating delivery port.Wherein, the valve in absorption type heat pump assembly is used to be turned on and off
Correspondence branch road, so as to switch ammonia still process steam flow under Heating Season and non-heating season operating mode to passing through valve during Heating Season and turn off ammonia and steam
Pipeline between vapour and evaporator and regenerator, ammonia steam enters heating installation by pipeline and exchanged heat with heating water, is that plant area carries
For heating；During non-heating season, the pipeline between ammonia steam and heating installation is turned off by valve, ammonia steam respectively enters evaporator
With regenerator distillation heat is provided for ammonia still（The evaporator of absorption heat pump, regenerator also can select series model, i.e. ammonia still process
Vapour enters the arrival end of evaporator, enters the entrance of regenerator, the outlet connection gas-liquid point of regenerator via the outlet of evaporator
From device）.Absorption heat pump 3 is parallel with one another standby with dephlegmator 5, when the unit maintenance of absorption heat pump 3 is safeguarded, utilizes dephlegmator
5 cooling ammonia steam heats.
In Fig. 1, remained ammonia groove 7 is stores the groove pond of ammoniacal liquor, and remained ammonia is passed through ceramic membrane mistake by remained ammonia pump 8
Filter 12 is passed through remained ammonia heat exchanger 9 and carries out heating preheating for it after being filtered, reduce energy consumption.Remained ammonia after heating
Flow into and enter ammonia still 1 after blender 13 plus alkali.The distilled ammonia wastewater of bottom of towe discharges ammonia still process by distilled ammonia wastewater pump 10 through two branch roads
Tower a, branch road is gone to remained ammonia heat exchanger 9 and heated up for remained ammonia, and cooler is gone to after carrying out heat recovery to distilled ammonia wastewater
6 are finally condensed into concentrated ammonia liquor product.The absorber of the distilled ammonia wastewater pipeline series connection class heat pump 3 of suction-type lithium bromide two of another branch road
17, ammonia still 1 is back to after being heated up using absorption two classes heat pump 3 for distilled ammonia wastewater, heat is provided for 1 distillation in ammonia still
Amount, reduces the consumption of the distillation ammonia still process of heater 11 at former ammonia still bottom.Distill heater 11 and absorption heat pump each other
It is standby, it is ensured that system steady running.
If as shown in Fig. 2 the branch road exported in system containing distilled ammonia wastewater heater, distilled ammonia wastewater pump 10 and ammonia still process
The entrance connection of waste water heater 15.Distilled ammonia wastewater is steaming by coal gas, steam or conduction oil in distilled ammonia wastewater heater 15
Ammonia waste water is heated, after the outlet of distilled ammonia wastewater heater 15 is converged with the outlet of bromine sorption type heat pump absorber, jointly with
Distilled ammonia wastewater refluxing opening is attached, and will provide heat in the distilled ammonia wastewater return ammonia still after heating for distillation.Distilled ammonia wastewater
Heater 15 is standby each other with absorption heat pump, it is ensured that system steady running.
The class heat pump of suction-type lithium bromide two in the utility model is a kind of common heat reclamation device, suction-type lithium bromide
The evaporator 16 of two class heat pumps is connected with absorber 17, and condenser 19 is connected with regenerator 18.The bottom of regenerator 18
Lithium bromide concentrated solution pipeline be attached with the entrance of solution pump 21, solution pump 21 outlet enter with the high temperature side of solution heat exchanger 22
Mouth connection, the high temperature side outlet of solution heat exchanger 22 is attached with the top of absorber 17, and lithium bromide concentrated solution is in absorber 17
Top carries out drop pouring, is changed into weak solution after absorbing the water vapour for carrying out flash-pot, enters solution heat exchanger by the bottom of absorber 17
22 low temperature side entrances, are discharged by the low temperature side outlet of solution heat exchanger 22, are gone to the top of regenerator 18 and are carried out drop pouring concentration.Condensation
The coolant pipeline of the bottom of device 19 is attached with the entrance of cryogen liquid-feeding pump 20, and the outlet of cryogen liquid-feeding pump 20 utilizes pipeline by cryogen
Water is squeezed into evaporator 16, and water as refrigerant, which enters, flows into the bottom of evaporator 16 after evaporator 16, in the presence of refrigerant cycle pump 26
The water as refrigerant of the bottom of evaporator 16 is got into the top of evaporator 16 and carries out drop pouring, the water as refrigerant that drop is drenched is changed into cryogen after absorbing heat
Steam enters to be brominated lithium concentrated solution and is absorbed in absorber 17, and lithium bromide concentrated solution is changed into weak solution.Suction-type lithium bromide
Evaporator 16, condenser 19, regenerator 18, absorber 17 and solution heat exchanger 22 of two class heat pumps etc. are attached.For
Vaccum, the eddy current type spiral spray head that unit is equipped with of guarantee unit, in the presence of solution pump 21, concentrated solution enters gas storage
Room 25, drives injector head to rotate at a high speed in the entrance of air storage chamber 25, makes the formation negative pressure of air storage chamber 25, passes through air storage chamber and two class heat pumps
Each container connection pipeline, the incoagulable gas in each container is recycled in air storage chamber by pipeline, it is ensured that unit it is true
Empty performance.But because concentrated solution temperature is too high, gas storage room pressure can be caused to change, cause suction to reduce, to ensure storage
Air chamber absorbs the ability of incoagulable gas, is cooled before concentrated solution enters air storage chamber for it.The mode cooled for concentrated solution
It is divided into two kinds, it is a kind of to allow it to carry out heat exchange cooling, such as Fig. 3 with the cooling water of unit outer loop with heat exchanger 23 using pumping
It is shown, with heat exchanger 23 and one cooling water it is to be cooled down into the concentrated solution before air storage chamber 25 using pumping, it is ensured that store up
The pressure of air chamber, so that it is guaranteed that air storage chamber 25 absorbs the ability of incoagulable gas.Enter from the cooling water of lithium bromide absorption-type machine unit
Mouth pipeline introduces one low-temperature cooling water into the hot low temperature side entrance of device 23 of pumping heat exchange, water heat-exchange temperature rise to be cooled
Discharged afterwards by pumping with the hot low temperature side outlet of device 23 of heat exchange, unit coolant outlet pipeline is led back by the road.From solution pump 21
One concentrated solution is drawn into the hot high temperature side entrance of device 23 of pumping heat exchange, the temperature reduction of concentrated solution after heat exchange, by being evacuated
Discharged with the hot high temperature side outlet of device 23 of heat exchange, into air storage chamber.
Another way is, using pumping heat exchanger, to be cooled by the water as refrigerant inside unit for its heat exchange, such as Fig. 4
It is shown, using pumping with the water as refrigerant of heat exchanger 23 and one unit interior circulation be into air storage chamber 25 concentrated solution carry out it is cold
But, it is ensured that the pressure of air storage chamber 25, so that it is guaranteed that air storage chamber 25 absorbs the ability of incoagulable gas.From lithium bromide absorption-type machine unit
Cryogen liquid-feeding pump introduce one cryogenic coolant water by pipeline enter the hot low temperature side entrance of device 23 of pumping heat exchange, treat cryogen
Discharged, led back by the road to unit evaporator 16 with the hot low temperature side outlet of device 23 of heat exchange by pumping after the rise of water heat-exchange temperature
It is interior.One concentrated solution is drawn into the hot high temperature side entrance of device 23 of pumping heat exchange from solution pump, the temperature of concentrated solution after heat exchange
Reduction, air storage chamber is discharged into by being evacuated with the hot outlet of device high temperature side 23 of heat exchange.
Claims (9)
1. reclaim ammonia still process column overhead ammonia vapour residual heat system using lithium bromide absorption type heat pump, including it is ammonia still, dephlegmator, absorption
Ammonia steam outlet, remained ammonia addition mouth, distilled ammonia wastewater backflow are provided with source pump and remained ammonia groove, ammonia still
Mouth, liquid phase ammoniacal liquor refluxing opening and distilled ammonia wastewater outlet, ammonia steam outlet are located at ammonia still process column overhead, and ammonia steam outlet passes through
Triple valve is connected in parallel dephlegmator and absorption heat pump respectively, and dephlegmator outlet enters with liquid phase ammoniacal liquor refluxing opening, saturator respectively
Mouth or the connection of cooler entrance, it is characterised in that：Absorption type heat pump assembly include evaporator, absorber, regenerator, condenser and
Heating plant, ammonia steam outlet connects evaporator inlet, heating plant high temperature side respectively by the intake line of three-channel parallel
It is separately provided for controlling the valve of each intake line break-make on entrance and regenerator entrance, three road intake lines；After cooling
Ammonia steam connected by the output pipe of three-channel parallel through evaporator outlet, heating plant high temperature side outlet and regenerator outlet
To gas-liquid separator, it is separately provided for controlling the valve of each output pipe break-make, gas-liquid separator on three road output pipes
Liquid-phase outlet connection liquid phase ammoniacal liquor refluxing opening, the gaseous phase outlet connection saturator or cooler of gas-liquid separator；Heating plant
Low temperature side entrance be connected with system heating water water return outlet, the low temperature side outlet of heating plant connects with system heating water delivery port
Connect.
2. utilization lithium bromide absorption type heat pump according to claim 1 reclaims ammonia still process column overhead ammonia vapour residual heat system, it is special
Levy and be：The absorber entrance of the absorption heat pump connects distilled ammonia wastewater outlet by pipeline, and absorber outlet passes through pipe
Road connects distilled ammonia wastewater refluxing opening.
3. utilization lithium bromide absorption type heat pump according to claim 1 or 2 reclaims ammonia still process column overhead ammonia vapour residual heat system, its
It is characterised by：Distilled ammonia wastewater outlet connects the high temperature side entrance of remained ammonia heat exchanger, the high temperature side of remained ammonia heat exchanger
Outlet connection cooler, the low temperature side entrance of remained ammonia heat exchanger is connected with remained ammonia groove, remained ammonia heat exchanger it is low
Warm side outlet is attached with mixer entrance, the remained ammonia addition mouth connection of mixer outlet and ammonia still.
4. utilization lithium bromide absorption type heat pump according to claim 1 or 2 reclaims ammonia still process column overhead ammonia vapour residual heat system, its
It is characterised by：Remained ammonia pump and purpose ceramic-film filter are provided between the remained ammonia groove and remained ammonia heat exchanger, is remained
Remaining ammonia vessel is connected with remained ammonia pump intake, and remained ammonia pump discharge is connected with purpose ceramic-film filter entrance, ceramic membrane filter
Device outlet is connected with the low temperature side entrance of remained ammonia heat exchanger, the low temperature side outlet and mixer entrance of remained ammonia heat exchanger
It is attached, the remained ammonia addition mouth connection of mixer outlet and ammonia still.
5. utilization lithium bromide absorption type heat pump according to claim 1 or 2 reclaims ammonia still process column overhead ammonia vapour residual heat system, its
It is characterised by：The thermal source of the ammonia still uses distilled ammonia wastewater heater or is arranged at the distillation driving heat source of bottom of towe.
6. utilization lithium bromide absorption type heat pump according to claim 5 reclaims ammonia still process column overhead ammonia vapour residual heat system, it is special
Levy and be：The distilled ammonia wastewater heater connects distilled ammonia wastewater outlet, and outlet and the absorber of distilled ammonia wastewater heater are exported
Connection formation is confluxed pipeline, and the pipeline that confluxes is connected with distilled ammonia wastewater refluxing opening.
7. utilization lithium bromide absorption type heat pump according to claim 1 or 2 reclaims ammonia still process column overhead ammonia vapour residual heat system, its
It is characterised by：Air storage chamber and pumping heat exchanger are provided with the absorption heat pump, air storage chamber is connected with aspiration pump, gas storage
Chamber inlet is provided with eddy current type spiral spray head, and air storage chamber is connected by pipeline and evaporator, absorber, regenerator and condenser
Connect, the lithium bromide concentrated solution pipeline for connecting regenerator outlet connects the high temperature side entrance of pumping heat exchanger through solution pump, changes
Lithium bromide concentrated solution after heat is delivered to gas storage chamber inlet, pumping heat exchange by pumping with the high temperature side outlet of heat exchanger
The low temperature side entrance of device connects the cooling water inlet pipe road of absorption heat pump, and the cooling water after heat exchange is through pumping heat exchanger
Low temperature side outlet return is to cooling water outlet pipe road.
8. utilization lithium bromide absorption type heat pump according to claim 1 or 2 reclaims ammonia still process column overhead ammonia vapour residual heat system, its
It is characterised by：Air storage chamber and pumping heat exchanger are provided with the absorption heat pump, air storage chamber is connected with aspiration pump, gas storage
Chamber inlet is provided with eddy current type spiral spray head, and air storage chamber is connected by pipeline and evaporator, absorber, regenerator and condenser
Connect, the lithium bromide concentrated solution pipeline for connecting regenerator outlet connects the high temperature side entrance of pumping heat exchanger through solution pump, changes
Lithium bromide concentrated solution after heat is delivered to gas storage chamber inlet, pumping heat exchange by pumping with the high temperature side outlet of heat exchanger
The low temperature side entrance of device connects the coolant pipeline of condensator outlet, low temperature of the water as refrigerant through pumping heat exchanger after heat exchange
Side outlet is back in evaporator.
9. utilization lithium bromide absorption type heat pump according to claim 1 or 2 reclaims ammonia still process column overhead ammonia vapour residual heat system, its
It is characterised by：The evaporator, regenerator and heating installation inwall are provided with resistant to ammonia corrosion resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357147.7U CN206320954U (en) | 2016-12-12 | 2016-12-12 | Ammonia still process column overhead ammonia vapour residual heat system is reclaimed using lithium bromide absorption type heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357147.7U CN206320954U (en) | 2016-12-12 | 2016-12-12 | Ammonia still process column overhead ammonia vapour residual heat system is reclaimed using lithium bromide absorption type heat pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766342A (en) * | 2016-12-12 | 2017-05-31 | 松下制冷（大连）有限公司 | Ammonia still process column overhead ammonia vapour residual heat system is reclaimed using lithium bromide absorption type heat pump |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766342A (en) * | 2016-12-12 | 2017-05-31 | 松下制冷（大连）有限公司 | Ammonia still process column overhead ammonia vapour residual heat system is reclaimed using lithium bromide absorption type heat pump |
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