CN208586078U - A kind of absorption type seawater desalination system with higher stability - Google Patents
A kind of absorption type seawater desalination system with higher stability Download PDFInfo
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- CN208586078U CN208586078U CN201820437968.4U CN201820437968U CN208586078U CN 208586078 U CN208586078 U CN 208586078U CN 201820437968 U CN201820437968 U CN 201820437968U CN 208586078 U CN208586078 U CN 208586078U
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Abstract
The utility model discloses a kind of absorption type seawater desalination system with higher stability, using seawater, easily evaporation and more empty medium silica gel realizes sea water desalination for the adsorption-desorption performance of vapor to the system under low pressure.It include: hot-water heating system, cooling water system, seawater water supply device, fresh water collecting device, heat regenerative system and vapour system totally six subsystems.On the basis of conventional absorbtion formula sea water desalination principle, which adds extraction cycle to reduce energy consumption, and adds back matter circulation to give full play to the adsorption-desorption performance of silica gel.The design separated using evaporation with condensation process is separated liquid-vapor mixture by separation chamber, substantially increases system for the adaptability of change of external conditions.Whole system is without any moving parts, and produced fresh water water quality is preferable, and application is extensive.
Description
Technical field
The utility model relates to field of sea water desalting technology, and in particular to absorption type field of sea water desalting technology.
Background technique
Fresh water is precious resources necessary to a National agricultural, industry and each department's economic development.With society it is fast
Serious insufficient supply has been presented in speed development, the rapid growth of the size of population, freshwater resources.By urbanization, economic development, life
The influence that level is continuously improved, water resources crisis have become the second-biggest-in-the-world environmental problem for being only second to global warming.Mesh
Before, with widest method for desalting seawater, there are two main classes: (1) thermal method desalination in the whole world, such as multiple-effect distillation (MED), multistage
Flash method (MSF) etc.；(2) embrane method desalination, such as positive osmosis (FO), hyperfiltration (RO).Although sea water desalination stream in recent years
The optimization of journey effectively reduces desalinating cost, improves fresh water production capacity, but there are still important to ask for traditional desalination technology
Topic: (1) consumption of high-grade energy and the discharge of pollutant；(2) corrosion and blocking of film and mass transter device；(3) by pipeline corruption
High maintenance costs caused by erosion or the salification of heat exchanger outer surface or incrustation.Carrying out sea water desalination using traditional energy can consume greatly
The resource of amount, the emerging energies such as solar energy, wind energy and underground heat will be that seawater is light since its is renewable and the characteristics such as green non-pollution
Change the new developing direction of driving force.
However, can be carried out sea water desalination using the sun, the fuel factor and luminous effect of solar energy are mainly utilized.Fuel factor is
It is directly heated using solar energy as heat source and carries out sea water by distillation；Luminous effect is to drive seawater desalination using solar power generation
Journey.One distinct disadvantage of solar seawater desalination system is that it can only provide thermal energy input when having sunlight daytime, such as
Fruit desalter needs continuous uninterrupted operation, then needs a large amount of heat source deposit；The desalination technology of wind energy driving is on edge
There is good application prospect in the high wind energy sector in sea.But wind energy is as solar energy, it may have intermittent feature, it is difficult to support sea
The continuous service of water desalting plant；Compared to solar energy and wind energy, the advantages of underground heat is can to provide incessantly the energy with 24 hours.
Geothermal system is continued working dependent on reasonable design.Therefore, can have simultaneously using emerging energy higher stable
Property seawater desalination system it is anxious wait propose.
The research and development of absorption type desalination technology is able to solve a series of defects of traditional desalination process.Absorption type sea
Water desalination technology can utilize 85 DEG C of low-grade energies below, and so that salt water is maintained at lower temperature in evaporator and steamed
Hair mitigates the influence of corrosion and fouling.If simultaneously desorption process can thoroughly be eliminated at 65 DEG C or more it is any come flash-pot
Unnecessary microbial contamination.
Patent " a kind of solar energy sea water desalination apparatus and its operating method " discloses a kind of solar energy sea water desalination apparatus
And its operating method, the device are based on adsorption air water-intaking equipment and saturated air humidification dehumidification formula solar energy distillation device,
By hot sea water humidifying air, then by Mare Frigoris water dehumidification air, realize that saturated air generates fresh water in big the temperature difference range, together
When by adsorption and desorption process, realize that cold air generates fresh water in small the temperature difference range.But such method carries out sea using air
Water desalination, efficiency is very low, and the prospect of large-scale promotion causes anxiety.
Patent " the absorption type desalination plant of matter circulation is returned with backheat " discloses a kind of suction that matter circulation is returned with backheat
Attached formula desalination plant.Although the device has carried out the integrated design of evaporator and condenser, equipment volume is reduced simultaneously
Take full advantage of the heat of the process, and energy utilization rate improved using extraction cycle, but the system be realize evaporation and
The coupling of condensation process is run, poor for the adaptability of cold and hot water flow and temperature fluctuation, can only be run in single operating condition.
Summary of the invention
The shortcomings that the purpose of the utility model is to overcome prior arts, provide it is a kind of by having compared with high-adaptability,
Working condition still can guarantee that system can be with the absorption type seawater of continuous operation driven using different temperatures heat source when changing
Desalination system.
The technical scheme adopted by the utility model is
A kind of absorption type seawater desalination system with compared with high-adaptability of the utility model, comprising:
(1) hot-water heating system, the hot-water heating system include boiler, and the water outlet of the boiler passes through water supply pipe
It is sequentially connected the entrance of hot-water circulating pump and hot-water supplying valve, the outlet of the hot-water supplying valve is divided into two-way, the first via
It is sequentially connected the first automatic valve and falling film evaporator tube-side inlet by the second hot water water supply branch pipe, the second tunnel is the first hot water
Water supply branch pipe, the first hot water water supply branch outlet are divided into the first branch pipe equipped with the second automatic valve and automatic equipped with third
Second branch pipe of valve, first branch pipe connect the first absorption-desorption bed pipe inlet pipeline, the second branch pipe connection
Second absorption-desorption bed pipe inlet pipeline, the outlet of falling film evaporator tube side are connected to boiler by the second hot water return pipe
Water return outlet, the pipe outlet of the first absorption-desorption bed passes through the third branch pipe and the second absorption-solution that the 4th automatic valve is housed
The pipe outlet for inhaling bed is sequentially communicated the first hot water return pipe and hot water by the 4th branch pipe equipped with the 5th automatic valve jointly
Case；
(2) cooling water system, the cooling water system include cooling tower, and the cooling tower outlet is supplied by cooling water
Water lines are sequentially connected the entrance of cooling water cycle water pump and cooling water valve, and the outlet of the cooling water valve is divided into
5th branch pipe and the 6th branch pipe, the 5th branch pipe are connect through the 6th automatic valve with condenser tube-side inlet, and the described the 6th
Branch outlet is divided into the 7th branch pipe equipped with the 7th automatic valve and the 8th branch pipe equipped with the 8th automatic valve, the 7th branch pipe
Connecting the first absorption-desorption bed pipe inlet, the 8th branch pipe connects the pipe inlet of the second absorption-desorption bed, and first
Absorption-desorption bed pipe outlet passes through the first cooling water return branch and the second absorption-desorption bed equipped with the 9th automatic valve
Pipe outlet by equipped with the tenth automatic valve the second cooling water return branch be sequentially connected jointly cooling water return water main pipe and
The tube side outlet of cooling tower entrance, the condenser is connected to by cooling water return pipe with cooling tower entrance；
(3) seawater water supply device, the seawater water supply device includes sea water tank, degassed, pretreated seawater by
Seawater inhalation pipe enters sea water tank, sea water tank outlet by be sequentially connected the first seawater water supply pipe valve, the second seawater water supply pipe valve,
The seawater water supply line of seawater water supply pump and seawater valve is connected with the spray equipment of the shell side inlet of falling film evaporator, institute
The shell-side outlet for the falling film evaporator stated is connected to by seawater return water main pipe with seawater water supply line, and separation chamber's liquid outlet is through sea
Water return branch connects seawater return water main pipe, one end of a by-pass line and the shell side inlet of seawater valve and falling film evaporator
Between seawater water supply line connection, the other end of the by-pass line be sequentially connected the 11st automatic valve, bypath valve, only
Return valve and sea water tank；The separation chamber be used for seawater vapor-liquid separation, be provided with liquidometer in the separation chamber, when point
By adjusting the aperture of seawater valve and bypath valve when too low or excessively high from indoor water liquid level, to change seawater flow, protect
Demonstrate,prove the stabilization of evaporation capacity；
(4) fresh water collecting device, the fresh water collecting device include fresh water collecting case, and the fresh water collecting case enters
Mouth is connected by the fresh water collecting pipe equipped with fresh water collecting pipe valve with the shell-side outlet of condenser, and vacuum pump, which passes through, is equipped with vacuum
The exhaust pipe of exhaust valve is connected with the exhaust outlet of fresh water collecting tank；
(5) heat regenerative system, the heat regenerative system include two sections of pipelines, the first backheat pipeline equipped with the 12nd automatic valve
The second adsorption-desorption bed pipe inlet of connection is drawn by the first absorption-desorption bed pipe outlet, the equipped with the 13rd automatic valve
Two product heat cal rods route the second absorption-desorption bed pipe outlet and draw the first absorption-desorption bed pipe inlet of connection；
(6) vapour system, the vapour system include five sections of jet chimneys altogether, and the first jet chimney is by falling film evaporator
Separation chamber steam inlet is drawn and connected to shell side steam (vapor) outlet, and the second jet chimney is divided into two by the extraction of separation chamber's steam (vapor) outlet
Road, connects the first absorption-desorption bed steam inlet through the first steam inlet automatic valve all the way, and another way is sequentially connected third steam
The steam inlet of pipeline, the second steam inlet automatic valve and the second absorption-desorption bed, the connection of the 4th jet chimney are equipped with first
The steam (vapor) outlet of first absorption-desorption bed of steam (vapor) outlet automatic valve and equipped with the second steam (vapor) outlet automatic valve second absorption-
Desorb bed steam (vapor) outlet, the 5th jet chimney one end equipped with jet chimney automatic valve be connected to condenser shell side inlet and separately
One end is connected to the 4th jet chimney；
The first seawater water supply pipe valve, the first automatic valve, the second automatic valve, third automatic valve, the 4th automatic valve,
Five automatic valves, the 6th automatic valve, the 7th automatic valve, the 8th automatic valve, the 9th automatic valve, the tenth automatic valve, the 11st automatic valve,
12nd automatic valve, the 13rd automatic valve, the first steam inlet automatic valve, the second steam inlet automatic valve, jet chimney are automatic
Valve, the first steam (vapor) outlet automatic valve, the second steam (vapor) outlet automatic valve, seawater water supply pump, cooling water cycle water pump, hot water circuit water
Pump and vacuum pump pass through control line respectively and are connected with control system.
The beneficial effects of the utility model are: being bypassed in seawater water system on the basis of absorption type desalination technology
The setting of pipe makes seawater flow facilitate adjusting, and evaporation of seawater can be made to stablize under different heating loads and semen donors.In hot water and sea
The heat exchange link of water evaporation increases separation chamber after falling film evaporator, and the vapour-liquid for forming seawater after falling film evaporator evaporates is mixed
It closes object and enters separation chamber, vapor is flowed out by separation chamber top, and heated and unevaporated seawater is directly flowed by separation chamber lower part
Circulating and evaporating again in the system of returning, rather than be expelled directly out, avoid the waste of heat.For the height for guaranteeing evaporation and condensation process
Effect operation, evaporation and condensation process are separated, hot-water heating system or cooling water system flow and temperature fluctuation can be offset and make
At system fluctuation of service phenomenon, this also enables whole system using the heat source and cold source of different temperatures.And cooling water system
In cooling water cycle water pump be used for extraction cycle driving, simplified system unit.It is cold since extraction cycle flows through cooling tower
But the open circulation of tower can be used in adapting to volume change caused by fluid temperature variations in heat recovery process, avoid the occurrence of pipe internal pressure
The phenomenon that power raising and partly-filled pipe-flow.The absorption of absorption-desorption bed is reduced using extraction cycle and desorption process hot and cold alternation is made
At heat and cooling capacity waste.Matter circulation is added back in entire cyclic process, the absorption and desorption of silica gel can be made full use of
Performance improves the production water efficiency of unit mass silica gel.The system can utilize low temperature heat energy, produce 50 DEG C using single source
The heat demand of evaporation and desorption process can be met simultaneously to 85 DEG C of hot water, and single cold source is used to produce 30 DEG C or so
Cooling water can meet the refrigeration requirement in condensation and absorption while operational process.The water quality of the produced fresh water of the system is better than reverse osmosis
The concentration of saturating method, wherein total dissolved solids, chloride and boron element is significantly lower than the produced fresh water of hyperfiltration.In whole system
Without any moving parts, applied occasion is relatively broad.
Detailed description of the invention
Fig. 1 is the schematic illustration of the absorption type seawater desalination system with higher stability of the utility model；
Fig. 2 is the schematic illustration of the control system of the utility model.
Specific embodiment
The utility model is illustrated in the following with reference to the drawings and specific embodiments.
The utility model as shown in Figure 1 have compared with high-adaptability absorption type seawater desalination system, include:
(1) hot-water heating system, the hot-water heating system include boiler 58, and the water outlet of the boiler 58 passes through water supply
Pipeline is sequentially connected the entrance of hot-water circulating pump 59 and hot-water supplying valve 60, and the outlet of the hot-water supplying valve 60 is divided into two
Road, the first via are sequentially connected 16 tube-side inlet of the first automatic valve 66 and falling film evaporator by the second hot water water supply branch pipe 12,
Second tunnel is the first hot water water supply branch pipe 55, and the first hot water water supply branch pipe 55 outlet is divided into equipped with the second automatic valve 62
First branch pipe 61 and the second branch pipe 54 equipped with third automatic valve 53, first branch pipe 61 connect the first absorption-desorption bed
18 pipe inlet pipelines, second branch pipe 54 connect 38 pipe inlet pipeline of the second absorption-desorption bed.Falling film evaporator
The outlet of 16 tube sides is connected to the water return outlet of boiler 58, the water pipe of the first absorption-desorption bed 18 by the second hot water return pipe 13
Outlet is passed through by the pipe outlet of the third branch pipe 52 equipped with the 4th automatic valve 51 and the second absorption-desorption bed 38 equipped with the
4th branch pipe 50 of five automatic valves 49 is sequentially communicated the first hot water return pipe 57 and boiler 58 jointly.For heat hot water case
The heat source of hot water can be the renewable energy such as solar energy, geothermal energy in 58.The first absorption-desorption bed 18 and second is inhaled
Attached-desorption bed 38 uses existing device.
(2) cooling water system, the cooling water system include cooling tower 26, and the outlet of cooling tower 26 passes through cooling
Water water supply pipe is sequentially connected the entrance of cooling water cycle water pump 25 and cooling water valve 24, the cooling water valve 24
Outlet be divided into the 5th branch pipe 37 and the 6th branch pipe 23, the 5th branch pipe 37 is through the 6th automatic valve 32 and 39 tube side of condenser
Entrance connection.6th branch pipe 23 outlet is divided into the 7th branch pipe 21 equipped with the 7th automatic valve 20 and the 8th automatic valve is housed
28 the 8th branch pipe 27.7th branch pipe 21 connects 18 pipe inlet of the first absorption-desorption bed, the 8th branch pipe
The pipe inlet of 27 the second absorption-desorption beds 38 of connection.First absorption-desorption bed, 18 pipe outlet is by being equipped with the 9th automatic valve
31 the first cooling water return branch 30 and 38 pipe outlet of the second absorption-desorption bed pass through the equipped with the tenth automatic valve 33
Two cooling water return branch 34 are sequentially connected 26 entrance of cooling water return water main pipe 29 and cooling tower jointly.The condenser
39 tube side outlet is connected to by cooling water return pipe 36 with 26 entrance of cooling tower.
(3) seawater water supply device, the seawater water supply device include sea water tank 1, degassed, pretreated seawater by
Seawater inhalation pipe 3 enters sea water tank 1, and the outlet of sea water tank 1 is by being sequentially connected the first seawater water supply pipe valve 4, the water supply of the second seawater
The spray of the shell side inlet of the seawater water supply line 5 and falling film evaporator 16 of pipe valve 2, seawater water supply pump 8 and seawater valve 9 fills
It sets and is connected, the shell-side outlet of the falling film evaporator 16 is connected to by seawater return water main pipe 67 with seawater water supply line 5.Together
When, 15 liquid outlet of separation chamber connects seawater return water main pipe 67 through seawater return branch 68.One end of one by-pass line 10 with
Seawater water supply line 5 between seawater valve 9 and the shell side inlet of falling film evaporator 16 is connected to, the by-pass line it is another
End is sequentially connected the 11st automatic valve 11, bypath valve 7, check-valves 6 and sea water tank 1.
(4) fresh water collecting device, the fresh water collecting device include fresh water collecting case 47, the fresh water collecting case 47
Entrance by being connected equipped with the fresh water collecting pipe 42 of fresh water collecting pipe valve 43 with the shell-side outlet of condenser 39, vacuum pump 46
It is connected by the exhaust pipe 45 equipped with vacuum gas discharge valve 44 with the exhaust outlet of fresh water collecting tank.
(5) heat regenerative system, the heat regenerative system include two sections of pipelines, the first product heat cal rod equipped with the 12nd automatic valve 64
It routes 18 pipe outlet of the first absorption-desorption bed and draws connection 38 pipe inlet of the second adsorption-desorption bed.It is automatic equipped with the 13rd
The second product heat cal rod routing 38 pipe outlet of the second absorption-desorption bed of valve 63 is drawn connection 18 water pipe of the first absorption-desorption bed and is entered
Mouthful.
(6) vapour system, the vapour system include five sections of jet chimneys altogether, and the first jet chimney 14 is by falling film evaporation
16 shell side steam (vapor) outlet of device draws and connects 15 steam inlet of separation chamber.Second jet chimney 17 is by 15 steam (vapor) outlet of separation chamber
Extraction is divided into two-way, all the way through the first steam inlet automatic valve 19 connect 18 steam inlet of the first absorption-desorption bed, another way according to
The steam inlet of secondary connection third jet chimney 22, the second steam inlet automatic valve 35 and the second absorption-desorption bed 38.4th
The connection of jet chimney 56 is equipped with the steam (vapor) outlet of the first absorption-desorption bed 18 of the first steam (vapor) outlet automatic valve 65 and equipped with second
38 steam (vapor) outlet of the second absorption-desorption bed of steam (vapor) outlet automatic valve 48, the 5th steam pipe equipped with jet chimney automatic valve 41
40 one end of road is connected to 39 shell side inlet of condenser and the other end is connected to the 4th jet chimney 56.
The separation chamber 15 is used for the vapor-liquid separation of seawater.The liquid-vapor mixture of 16 shell-side outlet of falling film evaporator is through
Entering separation chamber after one jet chimney 14, the vapor of evaporation is flowed out by 15 upper outlet of separation chamber through the second jet chimney 17,
Unevaporated seawater then flows into seawater return water main pipe 67 through seawater return branch 68 by 15 lower part outlet of separation chamber, is re-circulated into
In seawater water supply line 5.Separation chamber 15 is provided with liquidometer, when separation chamber memory aqueous position is too low or excessively high by adjusting sea
The aperture of penstock 9 and bypath valve 7 guarantees the stabilization of evaporation capacity to change seawater flow.
First seawater water supply pipe valve 4, the first automatic valve 66, the second automatic valve 62, third automatic valve 53, the 4th automatic valve
51, the 5th automatic valve 49, the 6th automatic valve 32, the 7th automatic valve 20, the 8th automatic valve 28, the 9th automatic valve the 31, the tenth are automatic
Valve 33, the 11st automatic valve 11, the 12nd automatic valve 64, the 13rd automatic valve 63, the first steam inlet automatic valve 19, second steam
Vapour entrance automatic valve 35, jet chimney automatic valve 41, the first steam (vapor) outlet automatic valve 65 and the second steam (vapor) outlet automatic valve 48
It is connected respectively by control line with control system.Second seawater water supply pipe valve 2, seawater valve 9, bypath valve 7, hot-water supplying valve
60, manually-operated gate can be used in cooling water valve 24, fresh water collecting pipe valve 43 and vacuum gas discharge valve 44, and automatic valve can also be used
And it is connected to the control system.10 upper check valve 6 of by-pass line is to prevent seawater from flowing backwards.
Seawater water supply pump 8, cooling water cycle water pump 25, hot-water circulating pump 59 and vacuum pump 46 with control system phase
Connection.
Preferred adsorbent material used by first absorption-desorption bed 18, the second absorption-desorption bed 38 is silica gel.
Preferably on the closed shell of the first absorption-desorption bed 18, the closed housing of the second absorption-desorption bed 38
On body, on falling film evaporator 16, on the first hot water water supply branch pipe 55, on the second hot water water supply branch pipe 12, the second hot water return pipe
On 13, on the 4th branch pipe 50, on third branch pipe 52, on the first hot water return pipe 57, first time equipped with the 12nd automatic valve 64
On pipe line, the second product heat cal rod of the 13rd automatic valve 63 road, on the first jet chimney 14, on the second jet chimney 17 and the
Thermal insulation material is coated on three jet chimneys 22.
The course of work of Tthe utility model system is as follows:
All valves and water pump are first closed when running initial, later vacuumize system.It is automatic to open the first steam inlet
Valve 19, the second steam inlet automatic valve 35, jet chimney automatic valve 41, fresh water collecting pipe valve 43, vacuum gas discharge valve 44, second steam
Vapor outlet automatic valve 48 and the first steam (vapor) outlet automatic valve 65 open vacuum pump 46, system pressure are evacuated to -90kPa, later
Close all valves.Enough seawater are injected in sea water tank 1 by Seawater inhalation pipe 3.
In system operation, the first absorption-desorption bed 18 and the second absorption-desorption bed 38 run and stop simultaneously, hand over
For absorption and desorption is carried out, guarantee the circulation continuous operation of system.
In system normal course of operation, the first seawater water supply pipe valve 4 and the 11st automatic valve 11 are normally opened, persistently give seawater system
System moisturizing and draining, guarantee the salinity of system in a stationary value.Rate of water make-up=displacement+evaporation capacity, wherein evaporation capacity according to
The setting of water yield demand.
Before a complete cycle starts, the second seawater water supply pipe valve 2, seawater valve 9, bypath valve 7 has been set in advance
Aperture, to adjust sea water supply amount.Seawater water supply pump 8 is opened when operation, required seawater is returned by sea water tank 1 or seawater
Water conduit tube 67 sucks 16 shell side of falling film evaporator and is evaporated, and steam water interface enters separation chamber 15 through the first jet chimney 14,
Steam enters corresponding absorption-desorption bed by silica gel absorption through the second jet chimney 17 by 15 upper outlet of separation chamber, and does not steam
The seawater of hair is discharged successively by 15 lower part outlet of separation chamber by entering seawater return branch 68, seawater return water main pipe 67 and seawater
Water supply line 5 is again sucked into falling film evaporator 16 and is evaporated.
Process is as follows when circular flow:
(1) when the first absorption-desorption bed 18 adsorbs vapor, and the second absorption-desorption bed 38 desorbs vapor: opening sea
Water water supply pump 8, the seawater in sea water tank 1 are flowed into the shell side of falling film evaporator 16 through seawater water supply line 5 and are evaporated, evaporate
Steam out is flowed into separation chamber 15 by the first jet chimney 14.Open the first steam inlet automatic valve 19, in separation chamber
Vapor is flowed into the first absorption-desorption bed 18 by the second jet chimney 17 by silica gel absorption.Open the second steam (vapor) outlet certainly
Dynamic valve 48 and jet chimney valve 41, make the vapor desorbed in the second absorption-desorption bed 38 pass through the 5th jet chimney 40
It flows into 39 shell side of condenser and is condensed into fresh water.The 5th automatic valve 49, third automatic valve 53 and the first automatic valve 66 are opened, is set
Good 60 aperture of hot-water supplying valve opens hot-water circulating pump 59.By hot water circulating pump water pump 59 drive, will all the way hot water by heat
Water tank 58 flows into 16 tube side of falling film evaporator through the second hot water water supply branch pipe 12, and flows back to boiler by the second hot water return pipe 13
In 58；Another way hot water, through the first hot water water supply branch pipe 55, the second branch pipe 54, flows into the second absorption-desorption bed by boiler 58
38 pipe inlets, and successively flowed from 38 pipe outlet of the second absorption-desorption bed through the 4th branch pipe 50 and the first hot water return pipe 57
In backheat water tank 18.Two-way hot water circuit is to provide 16 shell side evaporation of seawater process of falling film evaporator and the second absorption-desorption
Heat needed for silica gel desorption water vapor process in bed 38.At the same time, lift the aperture for setting cooling water valve 24,
The 7th automatic valve 20, the 9th automatic valve 31, the 6th automatic valve 32 are opened, cooling water cycle water pump 25 is opened.It is followed by cooling water
Ring water pump 25 drives, and the cooling water that cooling tower 26 is generated flows into 39 tube side of condenser through the 5th branch pipe 37 all the way, and through cooling
Water return pipe 36 flows back in cooling tower；Another way cooling water is successively flowed by the 6th branch pipe 23 and the 7th branch pipe 21 by cooling tower 26
Enter 18 pipe inlet of the first absorption-desorption bed, and from 18 pipe outlet of the first absorption-desorption bed successively through the first cooling water return water
Branch pipe 30 and cooling water return water main pipe 29 flow back in cooling tower 26.Two-way cooling water is recycled to take away the first absorption-desorption bed
The heat discharged in fresh water condensation process in silica gel absorption water vapor process and condenser 39 in 18, makes system the operation is stable.It is cold
The fresh water condensed in 39 shell side of condenser flows out to fresh water collecting case 47 by fresh water collecting pipe 42.When the first absorption-desorption bed
When 18 pressure reduction 6kPa, 38 pressure rise 6kPa of the second absorption-desorption bed, it is believed that absorption and desorption process stop close to saturation
The only process.At the end of, it is automatic to close the first steam inlet automatic valve 19, the 7th automatic valve 20, the 9th automatic valve the 31, the 6th
Valve 32, jet chimney automatic valve 41, the second steam (vapor) outlet automatic valve 48, the 5th automatic valve 49, third automatic valve 53 and first are certainly
Dynamic valve 66 and seawater water supply pump 8, hot-water circulating pump 59 and cooling water cycle water pump 25.
(2) it returns matter process 1: at the end of process (1), starting back matter process.Open 48 He of the second steam (vapor) outlet automatic valve
First steam (vapor) outlet automatic valve 65, the steam in the second absorption-desorption bed 38 successively pass through the second steam (vapor) outlet automatic valve 48,
Four jet chimneys 56 and the first steam (vapor) outlet automatic valve 65 flow into the first absorption-desorption bed 18.When the first absorption-desorption
When the pressure of bed 18 and the second absorption-desorption bed 38 is equal, it is believed that returning matter process terminates, and closes the second steam (vapor) outlet automatic valve
48 and the first steam (vapor) outlet automatic valve 65.The process makes spontaneously to carry out caloic exchange between two absorption-parsing bed, follows to be next
The Adsorption and desorption bed exchange of ring reduces energy consumption.
(3) heat recovery process 1: terminating when returning matter process, opens the 8th automatic valve 28, opens cooling water cycle water pump 25, makes
Cooling water in cooling tower 26 is successively flowed into through the 6th branch pipe 23 and the 8th branch pipe 27 under the driving of cooling water cycle water pump 25
Second absorption-desorption bed, 38 pipe inlet.The 13rd automatic valve 63 is opened, is made in the second absorption-desorption bed 38 during (1)
The hot water being passed through passes through the product heat cal rod equipped with the 13rd automatic valve 63 and flows into the first absorption-desorption bed pipe inlet.Open the 9th certainly
Dynamic valve 31 makes the cooling water being passed through during (1) in the first absorption-desorption bed 18 through the first cooling backwater branch pipe 30, cooling
Water return water main pipe 29, is flowed back in cooling tower 26.The first absorption-desorption of process bed 18 is due to being passed through by the second absorption-desorption bed
38 hot water flowed into, temperature increase, and the second absorption-parsing bed 38 carries out pre- in advance due to being passed through cooling water and temperature reduces
Cold and preheating, reduces the energy loss generated when Adsorption and desorption bed exchanges when subsequent cycle starts by cold-hot counteraction.
(4) when the first absorption-desorption bed 18 desorbs vapor, and the second absorption-desorption bed 38 adsorbs vapor: opening sea
Water water supply pump 8, the seawater in sea water tank 1 are flowed into the shell side of falling film evaporator 18 through seawater water supply line 5 and are evaporated, evaporate
Steam out is flowed into separation chamber 15 by the first jet chimney 14.Open the second steam inlet automatic valve 35, in separation chamber 15
Vapor pass sequentially through the second jet chimney 17 and third jet chimney 22 and flow into the second absorption-desorption bed 38 and inhaled by silica gel
It is attached.The first steam (vapor) outlet automatic valve 65 and jet chimney automatic valve 41 are opened, the water desorbed in the first absorption-desorption bed 18 is made
Successively the 4th jet chimney 56 and the 5th jet chimney 40 flow into 39 shell side of condenser and are condensed into fresh water steam.Open second certainly
Dynamic valve 62, the 4th automatic valve 51 and the first automatic valve 66, set 60 aperture of hot-water supplying valve, open hot-water circulating pump 59.
By hot water circulating pump water pump 59 drive, will all the way hot water by boiler 58 through the second hot water water supply branch pipe 12 flow into falling film evaporation
16 tube side of device, and flowed back in boiler 58 by the second hot water return pipe 13；Another way hot water is by boiler 58 successively through the first heat
Water water supply branch pipe 55 and the first branch pipe 61 flow into the pipe inlet of the first absorption-desorption bed 18, and by the first absorption-desorption bed
18 pipe outlets successively flow back in boiler 58 through third branch pipe 52 and the first hot water return pipe 57.Two-way hot water circuit is to mention
For heat needed for silica gel desorption water vapor process in 16 evaporation of seawater process of falling film evaporator and the first absorption-desorption bed 18
Amount.At the same time, the aperture of cooling water valve 24 has been set in advance, has opened the 8th automatic valve 28, the tenth automatic valve the 33, the 6th
Automatic valve 32 opens cooling water cycle water pump 25.By 25 driving of cooling water cycle water pump, the cooling that cooling tower 26 is generated
Water flows into 39 tube side of condenser through the 5th branch pipe 37 all the way, and flows back in cooling tower 26 through cooling water return pipe 36；Another way is cold
But water successively flows into 38 pipe inlet of the second absorption-desorption bed by the 6th branch pipe 23 and the 8th branch pipe 27 by cooling tower 26, and
It is successively flowed back to from 38 pipe outlet of the second absorption-desorption bed through the second cooling water return branch 34 and cooling water return water main pipe 29 cold
But in tower 26.Two-way cooling water is recycled to take away silica gel absorption water vapor process and condenser in the second absorption-desorption bed 38
The heat discharged in fresh water condensation process in 39 makes system the operation is stable.The fresh water condensed in 39 shell side of condenser, passes through fresh water
Collecting pipe 42 flows out to fresh water collecting case 47.When 18 pressure rise 6kPa of the first absorption-desorption bed, the second absorption-desorption bed 38
When pressure reduction 6kPa, it is believed that absorption and desorption process stop the process close to saturation.At the end of, the 8th automatic valve 28 of closing,
6th automatic valve 32, the tenth automatic valve 33, the second steam inlet automatic valve 35, jet chimney automatic valve 41, the 4th automatic valve 51,
Second automatic valve 62, the first steam (vapor) outlet automatic valve 65 and the first automatic valve 66 and seawater water supply pump 8, hot-water circulating pump 59
With cooling water cycle water pump 25.
(5) it returns matter process 2: at the end of process (4), starting back matter process.Open 48 He of the second steam (vapor) outlet automatic valve
First steam (vapor) outlet automatic valve 65, the steam in the first absorption-desorption bed 18 successively pass through the first steam (vapor) outlet automatic valve 65,
Four jet chimneys 56 and the second steam (vapor) outlet automatic valve 48 flow into the first absorption-desorption bed 18.When the first absorption-desorption
When the pressure of bed 18 and the second absorption-desorption bed 38 is equal, it is believed that returning matter process terminates, and closes the second steam (vapor) outlet automatic valve
48 and the first steam (vapor) outlet automatic valve 65.
(6) heat recovery process 2: terminating when returning matter process, opens the 7th automatic valve 20, opens cooling water cycle water pump 25, makes
Cooling water in cooling tower 26 is successively flowed into through the 6th branch pipe 23 and the 7th branch pipe 21 under the driving of cooling water cycle water pump 25
First absorption-desorption bed, 18 pipe inlet.The 12nd automatic valve 64 is opened, is made in the first absorption-desorption bed 18 during (4)
The hot water being passed through passes through the product heat cal rod equipped with the 12nd automatic valve 64 and flows into the second absorption-desorption bed pipe inlet.Open the tenth certainly
Dynamic valve 33 makes the cooling water being passed through during (4) in the second absorption-desorption bed 38 through the second cooling backwater branch pipe 34, cooling
Water return water main pipe 29, is flowed back in cooling tower 26.The second absorption-desorption of process bed 38 is due to being passed through by the first absorption-desorption bed
18 hot water flowed into, temperature increase, and the first absorption-parsing bed 18 carries out pre- in advance due to being passed through cooling water and temperature reduces
Cold and preheating, reduces the energy loss generated when Adsorption and desorption bed exchanges when subsequent cycle starts by cold-hot counteraction.
Then circulation step (1), (2), (3), (4), (5), (6), make system constantly carry out circular flow.If system vacuum
Degree decline, then open vacuum pump 46 and jet chimney automatic valve 41, fresh water collecting pipe valve 43 vacuumized.
Claims (4)
1. a kind of absorption type seawater desalination system with higher stability, it is characterised in that include:
(1) hot-water heating system, the hot-water heating system include boiler (58), and the water outlet of the boiler (58) passes through water supply
Pipeline is sequentially connected the entrance of hot-water circulating pump (59) and hot-water supplying valve (60), the outlet of the hot-water supplying valve (60)
It is divided into two-way, the first via is sequentially connected the first automatic valve (66) and falling film evaporator by the second hot water water supply branch pipe (12)
(16) tube-side inlet, the second tunnel are the first hot water water supply branch pipe (55), and the first hot water water supply branch pipe (55) outlet is divided into
The first branch pipe (61) equipped with the second automatic valve (62) and the second branch pipe (54) equipped with third automatic valve (53), described first
Branch pipe (61) connects first absorption-desorption bed (18) pipe inlet pipeline, and second branch pipe (54) connects the second absorption-solution
Bed (38) pipe inlet pipeline is inhaled, the outlet of falling film evaporator (16) tube side is connected to boiler by the second hot water return pipe (13)
(58) pipe outlet of water return outlet, the first absorption-desorption bed (18) passes through the third branch pipe equipped with the 4th automatic valve (51)
(52) and the pipe outlet of the second absorption-desorption bed (38) is common by the 4th branch pipe (50) equipped with the 5th automatic valve (49)
It is sequentially communicated the first hot water return pipe (57) and boiler (58)；
(2) cooling water system, the cooling water system include cooling tower (26), and the cooling tower (26) outlet passes through cooling
Water water supply pipe is sequentially connected the entrance of cooling water cycle water pump (25) and cooling water valve (24), the cooling water
The outlet of valve (24) is divided into the 5th branch pipe (37) and the 6th branch pipe (23), and the 5th branch pipe (37) is through the 6th automatic valve (32)
It is connect with condenser (39) tube-side inlet, the 6th branch pipe (23) outlet is divided into the 7th equipped with the 7th automatic valve (20)
It manages (21) and the 8th branch pipe (27) of the 8th automatic valve (28) is housed, the 7th branch pipe (21) connects the first absorption-desorption
Bed (18) pipe inlet, the 8th branch pipe (27) connect the pipe inlet of the second absorption-desorption bed (38), the first absorption-
It desorbs bed (18) pipe outlet and passes through the first cooling water return branch (30) equipped with the 9th automatic valve (31) and the second absorption-
Desorption bed (38) pipe outlet is sequentially connected jointly by the second cooling water return branch (34) equipped with the tenth automatic valve (33)
The tube side outlet of cooling water return water main pipe (29) and cooling tower (26) entrance, the condenser (39) passes through cooling water return water
Pipe (36) is connected to cooling tower (26) entrance；
(3) seawater water supply device, the seawater water supply device include sea water tank (1), and degassed, pretreated seawater is by sea
Bilge suction pipe (3) enters sea water tank (1), and sea water tank (1) outlet is by being sequentially connected the first seawater water supply pipe valve (4), the second sea
The seawater water supply line (5) of water water supply pipe valve (2), seawater water supply pump (8) and seawater valve (9) and falling film evaporator (16)
The spray equipment of shell side inlet is connected, the shell-side outlet of the falling film evaporator (16) by seawater return water main pipe (67) with
Seawater water supply line (5) connection, separation chamber's (15) liquid outlet connect seawater return water main pipe through seawater return branch (68)
(67), the seawater between one end and seawater valve (9) and the shell side inlet of falling film evaporator (16) of a by-pass line (10)
Water supply line (5) connection, the other end of the by-pass line are sequentially connected the 11st automatic valve (11), bypath valve (7), stop
Return valve (6) and sea water tank (1)；The separation chamber (15) is used for the vapor-liquid separation of seawater, in the separation chamber (15)
Equipped with liquidometer, when separation chamber memory aqueous position is too low or excessively high by adjusting opening for seawater valve (9) and bypath valve (7)
Degree, to change seawater flow, guarantees the stabilization of evaporation capacity；
(4) fresh water collecting device, the fresh water collecting device include fresh water collecting case (47), the fresh water collecting case (47)
Entrance by being connected equipped with the fresh water collecting pipe (42) of fresh water collecting pipe valve (43) with the shell-side outlet of condenser (39), very
Sky pump (46) is connected by the exhaust pipe (45) equipped with vacuum gas discharge valve (44) with the exhaust outlet of fresh water collecting tank；
(5) heat regenerative system, the heat regenerative system include two sections of pipelines, and the first backheat pipeline of the 12nd automatic valve (64) is housed
Second adsorption-desorption bed (38) pipe inlet of connection is drawn by the first absorption-desorption bed (18) pipe outlet, certainly equipped with the 13rd
Second product heat cal rod of dynamic valve (63) routes the second absorption-desorption bed (38) pipe outlet and draws the first absorption-desorption bed of connection
(18) pipe inlet；
(6) vapour system, the vapour system include five sections of jet chimneys altogether, and the first jet chimney (14) is by falling film evaporator
(16) separation chamber (15) steam inlet is drawn and connected to shell side steam (vapor) outlet, and the second jet chimney (17) is by separation chamber (15) steam
Outlet, which is drawn, is divided into two-way, connects first absorption-desorption bed (18) steam inlet through the first steam inlet automatic valve (19) all the way,
Another way is sequentially connected third jet chimney (22), the second steam inlet automatic valve (35) and the second absorption-desorption bed (38)
Steam inlet, the 4th jet chimney (56) connection be equipped with the first steam (vapor) outlet automatic valve (65) the first absorption-desorption bed
(18) steam (vapor) outlet and second absorption-desorption bed (38) steam (vapor) outlet equipped with the second steam (vapor) outlet automatic valve (48), are equipped with
The 5th jet chimney (40) one end of jet chimney automatic valve (41) be connected to condenser (39) shell side inlet and the other end with
The connection of 4th jet chimney (56)；
The first seawater water supply pipe valve (4), the first automatic valve (66), the second automatic valve (62), third automatic valve (53),
Four automatic valves (51), the 5th automatic valve (49), the 6th automatic valve (32), the 7th automatic valve (20), the 8th automatic valve (28), the 9th
Automatic valve (31), the tenth automatic valve (33), the 11st automatic valve (11), the 12nd automatic valve (64), the 13rd automatic valve (63),
First steam inlet automatic valve (19), the second steam inlet automatic valve (35), jet chimney automatic valve (41), the first steam (vapor) outlet
Automatic valve (65), the second steam (vapor) outlet automatic valve (48), seawater water supply pump (8), cooling water cycle water pump (25), hot water circuit water
Pump (59) and vacuum pump (46) are connected by control line with control system respectively.
2. the absorption type seawater desalination system according to claim 1 with higher stability, it is characterised in that: it is described
Second seawater water supply pipe valve (2), seawater valve (9), bypath valve (7), hot-water supplying valve (60), cooling water valve (24),
Fresh water collecting pipe valve (43) and vacuum gas discharge valve (44) using automatic valve and are connected to the control system.
3. the absorption type seawater desalination system according to claim 1 or 2 with higher stability, it is characterised in that:
The adsorbent material that first absorption-desorption bed (18) and the second absorption-desorption bed (38) use is silica gel.
4. the absorption type seawater desalination system according to claim 1 or 2 with higher stability, it is characterised in that:
On the closed shell of the first absorption-desorption bed (18), on the closed shell of the second absorption-desorption bed (38), falling liquid film
On evaporator (16), on the first hot water water supply branch pipe (55), on the second hot water water supply branch pipe (12), the second hot water return pipe (13)
It is upper, on the 4th branch pipe (50), on third branch pipe (52), on the first hot water return pipe (57), equipped with the 12nd automatic valve (64)
First product heat cal rod road, the second product heat cal rod road of the 13rd automatic valve (63), on the first jet chimney (14), the second steam pipe
Thermal insulation material is coated on road (17) and on third jet chimney (22).
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| CN201820437968.4U CN208586078U (en) | 2018-03-29 | 2018-03-29 | A kind of absorption type seawater desalination system with higher stability |
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| CN201820437968.4U CN208586078U (en) | 2018-03-29 | 2018-03-29 | A kind of absorption type seawater desalination system with higher stability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108285184A (en) * | 2018-03-29 | 2018-07-17 | 天津大学 | A kind of absorption type seawater desalination system with higher stability |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108285184A (en) * | 2018-03-29 | 2018-07-17 | 天津大学 | A kind of absorption type seawater desalination system with higher stability |
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