CN107213659B - A kind of function of mechanical steam recompression system and control method - Google Patents
A kind of function of mechanical steam recompression system and control method Download PDFInfo
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- CN107213659B CN107213659B CN201610809729.2A CN201610809729A CN107213659B CN 107213659 B CN107213659 B CN 107213659B CN 201610809729 A CN201610809729 A CN 201610809729A CN 107213659 B CN107213659 B CN 107213659B
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- 238000000034 method Methods 0.000 title claims description 20
- 239000007788 liquid Substances 0.000 claims abstract description 101
- 230000008676 import Effects 0.000 claims abstract description 63
- 239000013505 freshwater Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 138
- 239000000463 material Substances 0.000 claims description 56
- 239000007921 spray Substances 0.000 claims description 29
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 238000007906 compression Methods 0.000 claims description 26
- 230000006835 compression Effects 0.000 claims description 22
- 239000012141 concentrate Substances 0.000 claims description 11
- 230000002596 correlated effect Effects 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 2
- 230000020169 heat generation Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000005119 centrifugation Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- 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
-
- 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
- B01D3/42—Regulation; Control
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
- F22B3/045—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators the drop in pressure being achieved by compressors, e.g. with steam jet pumps
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention provides a kind of function of mechanical steam recompression system, including evaporative condenser, centrifugal compressor, helical-lobe compressor, electric heater, vapour liquid separator and fresh-water tank, evaporative condenser is connected to centrifugal compressor and helical-lobe compressor, the first valve and sluicing separator are equipped between evaporative condenser and centrifugal compressor, the second valve is provided between evaporative condenser and helical-lobe compressor, centrifugal compressor is connected to helical-lobe compressor, the outlet import of helical-lobe compressor, helical-lobe compressor are connected to the condenser pipe of evaporative condenser by vapour liquid separator.Function of mechanical steam recompression system provided by the invention be it is a kind of need not starting heat source stream, be able to achieve high-vapor-pressure ratio (temperature rise of compressed steam saturation) and high steam flow, function of mechanical steam recompression system with higher energy source efficiency, it can play the role of expanding function of mechanical steam recompression system application range, realize industrial energy saving.
Description
Technical field
The present invention relates to a kind of function of mechanical steam recompression system and control methods, belong to industrial distillation and concentration and Heat Supply Engineering
Middle Low Temperature Steam heat recovery field.
Background technique
Global energy problem becomes increasingly conspicuous, and AND ENERGY RESOURCES CONSUMPTION IN CHINA is high but energy utilization rate is low, and there is an urgent need to energy intensive
Type industrial circle carries out reducing energy consumption.Mechanical vapor recompression technology is to recycle Low Temperature Steam waste heat using heat pump principle, is utilized
Mechanical compressor compressed steam can provide the heat source stream of alternative Boiler Steam, and can be widely used in printing and dyeing, at sewage
The industrial circles such as reason, sea water desalination, chemical industry rectifying.Studies have shown that only using boiler with the energy consumption that compressor improves steam pressure
Generate the 5-10% of equivalent steam energy consumption.
Although function of mechanical steam recompression system energy-saving potential with higher, its application is limited to mechanical vapour with popularization
Compressor Technology.It is primarily due to vapor specific volume with higher, material liquid processing capacity when system practical application is limited to
Volume flow achieved by compressor.Secondly because the adiabatic exponent of vapor is higher, when the higher pressure of system service requirement
When contracting vapo(u)rous temperature rise, compressor operation pressure is relatively high, thus compressor needs overcome the problems, such as higher exhaust temperature.
In addition, current function of mechanical steam recompression system requires to provide additional heat source stream when starting, it is necessary to first steam
Material liquid is sent out, steam is generated and enters compressor, when system stable operation, then compressed steam is used to enter as heat source stream completely
System.Heat source stream when general starting up is all Boiler Steam, and energy consumption is higher, leads to the increased costs of system.
Usual centrifugal compressor is able to achieve biggish volume flow, but because it is to the sensibility of drop and the surge of small flow
Problem, adaptation sexual intercourse is poor, and operation pressure ratio should not be too high.And helical-lobe compressor can be sprayed because of its resistance to liquid characteristic by swept volume
The cooling mode of water, realizes the high pressure ratio and low exhaust temperature of both vapor compression, but its be only applicable in low volume flow.
Therefore function of mechanical steam recompression systematic difference is promoted and cost reduces, and can start heat source by solving system boot
Vapor problem provides big flow and the mechanical vapor-compression form of high pressure ratio both main paths set out, and then can certain journey
Alleviate the pressure of industrial production energy consumption on degree.
Summary of the invention
The present invention can solve the above problems very well, provide a kind of be switched on without extra heat source steam, in conjunction with centrifugal compressor
With helical-lobe compressor reapective features, big flow, the function of mechanical steam recompression system of high pressure ratio mechanical vapor-compression are realized, and be
The control method of system.
To solve the above problems, the present invention provides a kind of function of mechanical steam recompression system, including evaporative condenser, centrifugation pressure
Contracting machine, helical-lobe compressor, electric heater, vapour liquid separator and fresh-water tank are provided with strainer, institute at the top of the evaporative condenser
State the condensation for being provided with spray tube below strainer, header tank being provided with and be connected to the header tank below the spray tube
Pipe, the gas outlet of the header tank are provided with exhaust valve and vacuum pump, and the import of the spray tube is by being equipped with the first water pump
The outlet of electric heater described in pipeline connection, the evaporative condenser are connected to the centrifugal compressor by the venthole at the top of it
Import and the helical-lobe compressor import, also set up on the pipeline between the evaporative condenser and the centrifugal compressor
There are the first valve and sluicing separator, the second valve is provided on the pipeline between the evaporative condenser and the helical-lobe compressor
Door, the outlet of the centrifugal compressor is by being provided with screw rod described in the pipeline connection of material liquid preheating heat exchanger and third valve
The import of compressor, the outlet of the helical-lobe compressor is by being provided with helical-lobe compressor described in the pipeline connection of the 4th valve
Import, the outlet of the helical-lobe compressor are also connected to the import of the vapour liquid separator, the outlet of the vapour liquid separator
The import of the condenser pipe of the evaporative condenser, the material liquid import of the material liquid preheating heat exchanger and the material liquid
The first regulating valve is provided between the material liquid outlet of preheating heat exchanger, the material liquid outlet of the material liquid preheating heat exchanger is also
Respectively by be equipped with the pipeline and the second heat exchanger of pipeline connection equipped with the second regulating valve of the 5th valve material liquid outlet and
The material liquid import of second heat exchanger, the fresh water import of second heat exchanger is by being equipped with described in third regulating valve pipeline connection
The water outlet of vapour liquid separator, pipeline connection second of the fresh water import of second heat exchanger also by being equipped with the 4th regulating valve
Water pump, the import of second water pump is also by being equipped with the water outlet of fresh-water tank described in the pipeline connection of the 6th valve, and described the
The water-spraying control mouth of helical-lobe compressor described in the outlet of two water pumps, the water outlet of second heat exchanger is by being equipped with the
Seven valve pipelines are connected to the water inlet of the fresh-water tank, and the material liquid outlet of second heat exchanger is by being arranged in parallel third
The import of the pipeline connection third water pump of heat exchanger and the 4th heat exchanger, evaporation described in the outlet of the third water pump are cold
The water outlet of the import of the spray tube of condenser, the header tank of the evaporative condenser passes through the pipe equipped with the 4th water pump
Road is connected to the fresh water import of the third heat exchanger and is connected to the fresh-water tank, institute by the water outlet of the third heat exchanger
The concentrated solution outlet for stating evaporative condenser bottom is provided with the 5th water pump, and the outlet of the 5th water pump is on the one hand by being equipped with the
The import of third water pump described in the pipeline connection of eight valves, on the other hand by being equipped with the 4th described in the pipeline connection of the 9th valve
The concentrate import of heat exchanger is simultaneously discharged by the concentrated solution outlet of the 4th heat exchanger.
Further, the import of the electric heater is equipped with the tenth valve.
Further, the venthole at the top of the evaporative condenser is additionally provided with the 11st valve.
Further, the 12nd valve is additionally provided between the water outlet of the header tank and the 4th water pump.
Further, the material liquid import of the third heat exchanger and the material liquid import of the 4th heat exchanger are respectively equipped with
13rd valve and the 14th valve.
Further, the import of the third water pump is equipped with the 15th valve, and the outlet of first water pump is equipped with the 16th
Valve.
Furthermore the present invention also provides the control methods of above-mentioned function of mechanical steam recompression system, comprising:
Step 1: starting the vacuum pump first and vacuumize to system, and open the electric heater, when system is true
After hot water in reciprocal of duty cycle and the electric heater reaches requirement, start first water pump, the hot water warp in the electric heater
The evaporative condenser is sprayed by the spray tube after being overpressurized；
Step 2: closing first valve, opens second valve and the 4th valve, starts the screw rod pressure
Contracting machine, due to position negative pressure in the evaporative condenser, the hot water of penetrating can absorb self heat and generate low-flash vapour, flash steam
After the strainer filters out droplets of feed by after the helical-lobe compressor primary compression again through the 4th valve enter described in
Second compression, such circulation improve vapor (steam) temperature, pressure and the flow of screw compression contracting machine (3) outlet to helical-lobe compressor again；
Step 3: the 4th valve is closed, the steam of high-quality enters the vapour liquid separator by the road at this time, then
Into the condenser pipe of the evaporative condenser；
Step 4: closing the vacuum pump, opens first valve, closes second valve, starts the centrifugation
Compressor, the steam of high-quality itself condense and discharge heat after entering the condenser pipe, so that sprayed by the spray tube
Hot water generates steam, and the steam is sucked by the centrifugal compressor and carries out one stage of compression, then carried out through the helical-lobe compressor
After two-stage compression, the condenser pipe of the condenser/evaporator is entered through the vapour liquid separator, is so recycled, by described cold
The water that solidifying pipework condensation generates enters the header tank, and the gas without condensation then passes through the exhaust valve discharge system；
Step 5: closing the electric heater, first water pump, start the third water pump, and material liquid passes through at this time
The material liquid preheating heat exchanger, second heat exchanger and the third heat exchanger and the 4th heat exchanger are preheated
Afterwards, the spray tube is forced through by the third water pump and sprays into the evaporative condenser, absorbed heat and generate steam；
Step 6: spraying into the evaporative condenser but unevaporated concentration of raw material increases because of the evaporation of water, referred to as
Concentrate is required according to different process, needs to control its concentration, extracts concentrate out by water pump, according to its concentration, is adjusted
The 8th valve is saved, the concentrated solution discharge for entering third water pump and continuing to participate in system circulation is controlled；Remaining concentrate is through the 9th
Valve enters the 4th heat exchanger preheating material liquid, is discharged or collects later as product.
Further, the helical-lobe compressor in the process of running, water outlet of second water pump from the vapour liquid separator
The water outlet of mouth and the fresh-water tank draws water, and is entered after pressurization by the water-spraying control mouth of the helical-lobe compressor and is cooled down for it.
Further, the degree of superheat negative of the aperture of first regulating valve and the material liquid preheating heat exchanger outlet vapor
It closes.
Further, the temperature of the water outlet of the aperture and vapour liquid separator of second regulating valve is positively correlated, and the 4th
The aperture of regulating valve and the temperature of second unit fixed on water pump suction are negatively correlated, the aperture and the vapor-liquid separation of the third regulating valve
Liquid level inside device is positively correlated.
Compared with prior art, technical solution of the present invention has the advantage that
Function of mechanical steam recompression system and control method provided by the invention, when system starts, by vacuumizing system
Flash distillation generates Low Temperature Steam after the high-temperature water for generating electric water heater heating sprays into evaporative condenser, and utilizes helical-lobe compressor pressure
Contracting Low Temperature Steam provides heat source stream；When the steam production in evaporative condenser increases to certain value, centrifugal compressor is opened,
As level-one both vapor compression, the vapour of inhaling of helical-lobe compressor is the compressed steam come out from centrifugal compressor at this time, is carried out to steam
Two-stage compression provides the heat source stream with higher temperature and pressure into evaporative condenser, then realizes the stabilization of system
Operation；The heat for being absorbed the superheated steam that centrifugal compressor comes out using heat exchanger simultaneously, preheats material liquid, and to spiral shell
Bar compressor is inhaled the vapour degree of superheat and is controlled；By to water-spraying control in helical-lobe compressor swept volume, come when reducing high pressure ratio
The compressed steam degree of superheat, while the cooling effect of water can make compression process close to constant temperature process, and liquid water can also play sealing
Effect, to improve the performance of helical-lobe compressor.The present invention is that one kind need not start heat source stream, be able to achieve high-vapor-pressure ratio
(temperature rise of compressed steam saturation) and high steam flow, with it is higher can source efficiency function of mechanical steam recompression system, can play
Expand function of mechanical steam recompression system application range, realizes the effect of industrial energy saving.
Detailed description of the invention
Fig. 1 is the system schematic of the embodiment of the present invention；
In figure: 1 being evaporative condenser, 2 be centrifugal compressor, 3 be helical-lobe compressor, 4 be electric heater, 5 be vapour-liquid point
From device, 6 be fresh-water tank, 7 be material liquid preheating heat exchanger, 8 be the second heat exchanger, 9 be third heat exchanger, 10 be the 4th heat exchange
Device, 11 be sluicing separator, 12 be vacuum pump, 13 be the first water pump, 14 be third water pump, 15 be the 5th water pump, 16 be the 4th
Water pump, 17 be the second water pump, 18 be exhaust valve, 19 be the tenth valve, 20 be the 16th valve, 21 be the 11st valve, 22 be
First valve, 23 for the second valve, 24 be the 4th valve, 25 be third valve, 26 be the first regulating valve, 27 be the 5th valve,
28 be the second regulating valve, 29 be third regulating valve, 30 be the 7th valve, 31 be the 13rd valve, 32 be the 14th valve, 33 be
9th valve, 34 be the 8th valve, 35 be the 15th valve, 36 be the 12nd valve, 37 be the 4th regulating valve, 38 be the 6th valve
Door, 1a are strainer, 1b is spray tube, 1c is header tank, 1d is condenser pipe.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
System embodiment
A kind of function of mechanical steam recompression system as shown in Figure 1:, including evaporative condenser 1, centrifugal compressor 2, screw compression
Machine 3, electric heater 4, vapour liquid separator 5 and fresh-water tank 6, the top of the evaporative condenser 1 are provided with strainer 1a, the strainer
It is provided with below 1a and is provided with header tank 1c below spray tube 1b, the spray tube 1b and is connected to the header tank 1c
Condenser pipe 1d, the gas outlet of the header tank 1c are provided with exhaust valve 18 and vacuum pump 12, and the import of the spray tube 1b passes through
The outlet of electric heater 4 described in pipeline connection equipped with the first water pump 13, the evaporative condenser 1 pass through the venthole at the top of it
It is connected to the import of the centrifugal compressor 2 and the import of the helical-lobe compressor 3, the evaporative condenser 1 is pressed with the centrifugation
The first valve 22 and sluicing separator 11, the evaporative condenser 1 and the spiral shell are also disposed on pipeline between contracting machine 2
The second valve 23 is provided on pipeline between bar compressor 3, the outlet of the centrifugal compressor 2 is pre- by being provided with material liquid
The outlet of the import of helical-lobe compressor 3 described in the pipeline connection of heat exchanger 7 and third valve 25, the helical-lobe compressor 3 is logical
The import for being provided with helical-lobe compressor 3 described in the pipeline connection of the 4th valve 24 is crossed, the outlet of the helical-lobe compressor 3 is also connected to
The import of the vapour liquid separator 5, the condenser pipe 1d of evaporative condenser 1 described in the outlet of the vapour liquid separator 5
Import, the material liquid of the material liquid import of the material liquid preheating heat exchanger 7 and the material liquid preheating heat exchanger 7 exports it
Between be provided with the first regulating valve 26, the material liquid outlet of the material liquid preheating heat exchanger 7 is also respectively by being equipped with the 5th valve
The original of the material liquid outlet and the second heat exchanger 8 of 27 pipeline and the second heat exchanger of pipeline connection 8 equipped with the second regulating valve 28
Liquor inlet, the fresh water import of second heat exchanger 8 is by being equipped with vapour liquid separator 5 described in 29 pipeline connection of third regulating valve
Water outlet, the fresh water import of second heat exchanger 8 also by be equipped with the 4th regulating valve 37 the second water pump of pipeline connection 17,
The import of second water pump 17 is also by being equipped with the water outlet of fresh-water tank 6 described in the pipeline connection of the 6th valve 38, and described the
The water-spraying control mouth of helical-lobe compressor 3 described in the outlet of two water pumps 17, the water outlet of second heat exchanger 8 is by setting
There is the water inlet of fresh-water tank 6 described in 30 pipeline connection of the 7th valve, the material liquid outlet of second heat exchanger 8 is set by parallel connection
It is equipped with the import of the pipeline connection third water pump 14 of third heat exchanger 9 and the 4th heat exchanger 10, the outlet of the third water pump 14
It is connected to the import of the spray tube 1b of the evaporative condenser 1, the water outlet of the header tank 1c of the evaporative condenser 1
By being equipped with the fresh water import of third heat exchanger 9 described in the pipeline connection of the 4th water pump 16 and passing through the third heat exchanger 9
Water outlet is connected to the fresh-water tank 6, and the concentrated solution outlet of 1 bottom of evaporative condenser is provided with the 5th water pump 15, described
The outlet of 5th water pump 15 is on the one hand by being equipped with the import of third water pump 14 described in the pipeline connection of the 8th valve 34, another party
Face is by being equipped with the concentrate import of the 4th heat exchanger 10 described in the pipeline connection of the 9th valve 33 and by the 4th heat exchange
The concentrated solution outlet of device 10 is discharged.
The import of the electric heater 4 is equipped with the tenth valve 19.
The venthole at 1 top of evaporative condenser is additionally provided with the 11st valve 21.
The 12nd valve 36 is additionally provided between the water outlet of the header tank 1c and the 4th water pump 16.
The material liquid import of the third heat exchanger 9 and the material liquid import of the 4th heat exchanger 10 are respectively equipped with the tenth
Three valves 31 and the 14th valve 32.
The import of the third water pump 14 is equipped with the 15th valve 35, and the outlet of first water pump 13 is equipped with the 16th valve
Door 20.
Embodiment of the method
A kind of control method of function of mechanical steam recompression system, includes the following steps:
Step 1: starting the vacuum pump 12 first and vacuumize to system, and open the electric heater 4, when being
After hot water in system vacuum degree and the electric heater 4 reaches requirement, start first water pump 13, in the electric heater 4
Hot water the evaporative condenser 1 is sprayed by the spray tube 1b after being overpressurized；
Step 2: closing first valve 22, opens second valve 23 and the 4th valve 24, described in starting
Helical-lobe compressor 3, due to position negative pressure in the evaporative condenser 1, the hot water of penetrating can absorb self heat and generate low-flash
Vapour, flash steam after the strainer 1a filters out droplets of feed by after 3 primary compression of helical-lobe compressor again through the described 4th
Valve 24 enters the helical-lobe compressor 3 second compression again, so recycles, improves the quality of steam；
Since generated flash steam amount is lower, the centrifugal compressor 2 cannot be directly opened, first valve need to be closed
Door 22, opens simultaneously second valve 23, opens the helical-lobe compressor 3 and compress generated Low Temperature Steam, because of flash steam
Temperature and pressure it is lower, the pressure after primary compression will not be too high with temperature, is not able to satisfy the requirement of system heat sources steam.
First the steam discharge of all or part of helical-lobe compressor 3 can be bypassed by the 4th valve 24 to the helical-lobe compressor 3 at this time
Import after mixing increasing temperature and pressure with the flash steam that the evaporative condenser 1 comes out, enters back into the helical-lobe compressor 3 and continues quilt
Compression, so that steam pressure and temperature be continuously improved.
Step 3: closing the 4th valve 24, and the steam of high-quality enters the vapour liquid separator 5 by the road at this time,
Subsequently into the condenser pipe 1d of the evaporative condenser 1；
The vapour liquid separator 5 can also start the effect of stable steam pressure.
Step 4: closing the vacuum pump 12, opens first valve 22, closes second valve 23, starts institute
Centrifugal compressor 2 is stated, the steam of high-quality itself condenses and discharge heat after entering the condenser pipe 1d, so that by the spray
The hot water that pipe 1b is sprayed into generates steam, and the steam is sucked by the centrifugal compressor 2 and carries out one stage of compression, then through the screw rod
Compressor 3 carries out two-stage compression, and the condenser pipe 1d of the evaporative condenser 1 is entered through the vapour liquid separator 5, is so followed
Ring enters the header tank 1c by the water that condenser pipe 1d condensation generates, and the gas without condensation then passes through the exhaust
18 discharge system of valve；
Under the heat source stream effect that the helical-lobe compressor 3 provides, the evaporation of shower water will increase steam production.Work as stream
When the steam flow of the evaporative condenser 1 is higher than 2 minimum flow of centrifugal compressor requirement out, the centrifugation can be opened
Compressor 2 compresses generated Low Temperature Steam, and Low Temperature Steam first passes through described let out into the centrifugal compressor 2 before
Separator 11 can avoid drop and enter the centrifugal compressor 2.
Step 5: the electric heater 4, first water pump 13 are closed, starts the third water pump 14, at this time material liquid
By the material liquid preheating heat exchanger 7, second heat exchanger 8 and the third heat exchanger 9 and the 4th heat exchanger
10 preheated after the spray tube 1b be forced through by the third water pump 14 spray into the evaporative condenser 1, absorb heat
Generate steam.It is superheated steam through the compressed steam of the centrifugal compressor 2, recycles it using the liquid preheating heat exchanger 7
Heat preheats material liquid, in this way, suction vapour of the steam after being boosted and cooling down as the helical-lobe compressor 3.It is described
The principle of 7 recovered steam heat of liquid preheating heat exchanger is to ensure that the helical-lobe compressor 3 inhales vapour for saturated vapor, can be dropped in this way
The suction vapour specific volume of the low helical-lobe compressor 3, and then can match with the volume flow of the centrifugal compressor 2, guarantee compression
The quality of steam.
The helical-lobe compressor 3 in the process of running, second water pump 17 from the water outlet of the vapour liquid separator 5 and
The water outlet of the fresh-water tank 6 draws water, and is entered after pressurization by the cold water outlet of the helical-lobe compressor 3 and is cooled down for it.
The aperture of first regulating valve 26 and the degree of superheat of 7 outlet vapor of material liquid preheating heat exchanger are negatively correlated.
The temperature of the water outlet of the aperture of second regulating valve 28 and the vapour liquid separator 5 is positively correlated, and the 4th is adjusted
The aperture of valve 37 and the temperature of 17 import of the second water pump are negatively correlated, the aperture and the vapour-liquid point of the third regulating valve 29
It is positively correlated from the liquid level inside device 5.
Since the helical-lobe compressor 3 suction stripping temperature and pressure all increase, operation pressure ratio is also higher, must spray water at this time
It is cooling, the exhaust temperature of the helical-lobe compressor 3 is reduced, the cooling effect for spraying into water can make compression process close to constant temperature process,
Can also there be certain sealing function to each leakage path simultaneously, so as to improve the performance of the helical-lobe compressor 3, and then ensure
The operational efficiency of system.
Second heat exchanger 8 can be gone successively to by the material liquid after 2 steam discharge of centrifugal compressor preheating, with outflow institute
It states in the penetrating screw compression 3 of vapour liquid separator 5 but unevaporated part high-temperature water exchanges heat, be further preheated；
In order to ensure heat exchange efficiency, reduction flow losses can be according to the pressure and liquid level in the vapour liquid separator 5, adjusting and high temperature
The raw material flow quantity of water heat exchange, the material liquid after being preheated mix with main road material liquid, divide two-way to respectively enter the third and change
Hot device 9 and the 4th heat exchanger 10, and the waste heat by recycling product water and concentrate that the evaporative condenser 1 flows out,
And then own temperature is further increased, it is then sprayed into the evaporative condenser 1 via the third water pump 14 and flashes or absorb heat
Evaporation generates the Low Temperature Steam that vapour is inhaled as the centrifugal compressor 2.
The condensed water generated in the evaporative condenser 1 is pumped out through the 4th water pump 16, is introduced into the third heat exchange
Device 9 recycles its waste heat and preheats to material liquid, enters the fresh-water tank 6 later；Institute will be mixed using second water pump 17
The water at low temperature in the high-temperature water and the fresh-water tank 6 of vapour liquid separator 5 is stated, is sprayed into the working chamber of the helical-lobe compressor 3, is used
In the cooling of compressed steam and the sealing in the endoluminal leak channel that works；In the case where amount of water sprayed is certain, the described 4th can be passed through
Regulating valve 37 and the 6th valve 38 regulate and control injection water temperature.
Step 6: the treatment fluid concentration of 1 bottom of evaporative condenser is increased because of the evaporation of water, becomes concentrate, warp
5th water pump 15 pumps out rear part together with the material liquid after preheating, continues to spray into the 1 participation system of evaporative condenser
Circulation can control the concentrated solution discharge for participating in system circulation according to the 1 bottom concentrate concentration of evaporative condenser；
Another part concentrate being pumped out enters the 4th heat exchanger 10, recycles preheating of its waste heat for material liquid, Zhi Houzhi
Run in out or is collected as product.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of function of mechanical steam recompression system, it is characterised in that: including evaporative condenser (1), centrifugal compressor (2), screw rod
Compressor (3), electric heater (4), vapour liquid separator (5) and fresh-water tank (6) are provided at the top of the evaporative condenser (1)
It is provided with spray tube (1b) below strainer (1a), the strainer (1a), is provided with header tank below the spray tube (1b)
(1c) and the condenser pipe (1d) being connected to the header tank (1c), the gas outlet of the header tank (1c) are provided with exhaust valve (18)
With vacuum pump (12), the import of the spray tube (1b) is by being equipped with electric heater described in the pipeline connection of the first water pump (13)
(4) outlet, the evaporative condenser (1) are connected to import and the institute of the centrifugal compressor (2) by the venthole at the top of it
The import of helical-lobe compressor (3) is stated, is successively set on the pipeline between the evaporative condenser (1) and the centrifugal compressor (2)
It is equipped with the first valve (22) and sluicing separator (11), the pipe between the evaporative condenser (1) and the helical-lobe compressor (3)
Road is provided with the second valve (23), the outlet of the centrifugal compressor (2) by be provided with material liquid preheating heat exchanger (7) and
The outlet of the import of helical-lobe compressor (3) described in the pipeline connection of third valve (25), the helical-lobe compressor (3) passes through setting
There is the import of helical-lobe compressor (3) described in the pipeline connection of the 4th valve (24), the outlet of the helical-lobe compressor (3) is also connected to
The import of the vapour liquid separator (5), evaporative condenser (1) described in the outlet of the vapour liquid separator (5) it is described cold
The import of solidifying pipe (1d), the material liquid import of the material liquid preheating heat exchanger (7) and the material liquid preheating heat exchanger (7)
Material liquid is provided with the first regulating valve (26) between outlet, and the material liquid outlet of the material liquid preheating heat exchanger (7) is also distinguished
By being equipped with the pipeline of the 5th valve (27) and the material liquid of the second heat exchanger of pipeline connection (8) equipped with the second regulating valve (28)
The material liquid import of outlet and the second heat exchanger (8), the fresh water import of second heat exchanger (8) is by being equipped with third regulating valve
(29) water outlet of vapour liquid separator described in pipeline connection (5), the fresh water import of second heat exchanger (8) is also by being equipped with the
The second water pump of pipeline connection (17) of four regulating valves (37), the import of second water pump (17) is also by being equipped with the 6th valve
(38) water outlet of fresh-water tank described in pipeline connection (6), helical-lobe compressor described in the outlet of second water pump (17)
(3) water outlet of water-spraying control mouth, second heat exchanger (8) is light described in the 7th valve (30) pipeline connection by being equipped with
The water inlet of water tank (6), the material liquid outlet of second heat exchanger (8) is by being arranged in parallel third heat exchanger (9) and the
The import of the pipeline connection third water pump (14) of four heat exchangers (10), evaporation described in the outlet of the third water pump (14) are cold
The import of the spray tube (1b) of condenser (1), the water outlet of the header tank (1c) of the evaporative condenser (1) is by setting
There is the fresh water import of third heat exchanger (9) described in the pipeline connection of the 4th water pump (16) and by the third heat exchanger (9)
Water outlet is connected to the fresh-water tank (6), and the concentrated solution outlet of evaporative condenser (1) bottom is provided with the 5th water pump
(15), the outlet of the 5th water pump (15) is on the one hand by being equipped with third water pump described in the pipeline connection of the 8th valve (34)
(14) import, on the other hand by be equipped with the 9th valve (33) pipeline connection described in the 4th heat exchanger (10) concentrate into
Mouth is simultaneously discharged by the concentrated solution outlet of the 4th heat exchanger (10).
2. a kind of function of mechanical steam recompression system according to claim 1, it is characterised in that: the electric heater (4) into
Mouth is additionally provided with the tenth valve (19).
3. a kind of function of mechanical steam recompression system according to claim 1, it is characterised in that: evaporative condenser (1) top
The venthole in portion is additionally provided with the 11st valve (21).
4. a kind of function of mechanical steam recompression system according to claim 1, it is characterised in that: the water outlet of the header tank (1c)
The 12nd valve (36) is additionally provided between mouth and the 4th water pump (16).
5. a kind of function of mechanical steam recompression system according to claim 1, it is characterised in that: the third heat exchanger (9)
Material liquid import and the material liquid import of the 4th heat exchanger (10) further respectively have the 13rd valve (31) and the 14th valve
Door (32).
6. a kind of function of mechanical steam recompression system according to claim 1, it is characterised in that: the third water pump (14) into
Mouth is equipped with the 15th valve (35), and the outlet of first water pump (13) is additionally provided with the 16th valve (20).
7. a kind of control method of function of mechanical steam recompression system described in claim 1 to 6 any one, which is characterized in that packet
Include following steps:
Step 1: starting the vacuum pump (12) first and vacuumize to system, and open the electric heater (4), when being
After hot water in system vacuum degree and the electric heater (4) reaches requirement, start first water pump (13), the electric heater
(4) hot water in sprays into the evaporative condenser (1) by the spray tube (1b) after being overpressurized；
Step 2: closing first valve (22), opens second valve (23) and the 4th valve (24), starts institute
Helical-lobe compressor (3) are stated, due to position negative pressure in the evaporative condenser (1), it is low that the hot water of penetrating can absorb self heat generation
Warm flash steam, flash steam after the strainer (1a) filters out droplets of feed by after the helical-lobe compressor (3) primary compression again
Enter the helical-lobe compressor (3) second compression again through the 4th valve (24), so recycles, improve screw compression contracting machine (3)
Vapor (steam) temperature, pressure and the flow of outlet；
Step 3: closing the 4th valve (24), and the steam of high-quality enters the vapour liquid separator (5) by the road at this time,
Subsequently into the condenser pipe (1d) of the evaporative condenser (1)；
Step 4: closing the vacuum pump (12), opens first valve (22), closes second valve (23), starting
The centrifugal compressor (2), the steam of high-quality enters the condenser pipe (1d) and itself condenses and discharge heat afterwards, so that by institute
The hot water for stating spray tube (1b) penetrating generates steam, and the steam is sucked by the centrifugal compressor (2) carries out one stage of compression, then
Two-stage compression is carried out through the helical-lobe compressor (3), the institute of the evaporative condenser (1) is entered through the vapour liquid separator (5)
Condenser pipe (1d) is stated, is so recycled, enters the header tank (1c) by the water that the condenser pipe (1d) condensation generates, without
The gas of condensation then passes through the exhaust valve (18) discharge system；
Step 5: closing the electric heater (4), first water pump (13), starts the third water pump (14), at this time raw material
Liquid is by the material liquid preheating heat exchanger (7), second heat exchanger (8) and the third heat exchanger (9) and described the
Four heat exchangers (10) preheated after by the third water pump (14) be forced through the spray tube (1b) spray into it is described evaporation it is cold
Condenser (1) absorbs heat and generates steam；
Step 6: spraying into the evaporative condenser (1) but unevaporated concentration of raw material increases because of the evaporation of water, referred to as dense
Contracting liquid, requires according to different process, needs to control its concentration, extracts concentrate out by water pump (15), according to its concentration,
The 8th valve (34) is adjusted, the concentrated solution discharge for entering third water pump (14) and continuing to participate in system circulation is controlled；It is remaining dense
Contracting liquid enters the 4th heat exchanger (10) preheating material liquid through the 9th valve (33), is discharged or collects later as product.
8. a kind of control method of function of mechanical steam recompression system according to claim 7, it is characterised in that: the screw rod pressure
Contracting machine (3) in the process of running, water outlet and the fresh-water tank of second water pump (17) from the vapour liquid separator (5)
(6) water outlet draws water, and the water-spraying control mouth after pressurization by the helical-lobe compressor (3) enters to be cooled down for it.
9. a kind of control method of function of mechanical steam recompression system according to claim 7, it is characterised in that: described first adjusts
The degree of superheat of the aperture and material liquid preheating heat exchanger (7) outlet vapor that save valve (26) is negatively correlated.
10. a kind of control method of function of mechanical steam recompression system according to claim 7, it is characterised in that: described second
The temperature of the fresh water outlet mouth of the aperture and vapour liquid separator (5) of regulating valve (28) is positively correlated, the 4th regulating valve
(37) temperature of aperture and the second water pump (17) import is negatively correlated, the aperture of the third regulating valve (29) and the vapour
The internal liquid level of liquid/gas separator (5) is positively correlated.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4417847A (en) * | 1981-08-14 | 1983-11-29 | Exxon Research & Engineering Co. | Separate quench and evaporative cooling of compressor discharge stream |
| CN101444675A (en) * | 2008-12-08 | 2009-06-03 | 西安交通大学 | Alcohol fermentation waste liquid heat pump concentration process and device therefor |
| CN202506152U (en) * | 2012-03-11 | 2012-10-31 | 甘肃蓝科石化高新装备股份有限公司 | Plate type evaporator device with mechanical vapor recompressor (MVR) |
| CN103127736A (en) * | 2013-03-26 | 2013-06-05 | 东华大学 | Evaporation and concentration device utilizing heat pump technique |
| CN103203116A (en) * | 2013-04-24 | 2013-07-17 | 江苏科化节能环保设备有限公司 | MVR (Mechanical Vapor Recompression) continuous evaporative crystallization system and continuous evaporative crystallization method |
| CN103265089A (en) * | 2013-05-07 | 2013-08-28 | 西安交通大学 | High temperature high efficiency multi-effect seawater distillation desalination apparatus and method |
-
2016
- 2016-09-08 CN CN201610809729.2A patent/CN107213659B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4417847A (en) * | 1981-08-14 | 1983-11-29 | Exxon Research & Engineering Co. | Separate quench and evaporative cooling of compressor discharge stream |
| CN101444675A (en) * | 2008-12-08 | 2009-06-03 | 西安交通大学 | Alcohol fermentation waste liquid heat pump concentration process and device therefor |
| CN202506152U (en) * | 2012-03-11 | 2012-10-31 | 甘肃蓝科石化高新装备股份有限公司 | Plate type evaporator device with mechanical vapor recompressor (MVR) |
| CN103127736A (en) * | 2013-03-26 | 2013-06-05 | 东华大学 | Evaporation and concentration device utilizing heat pump technique |
| CN103203116A (en) * | 2013-04-24 | 2013-07-17 | 江苏科化节能环保设备有限公司 | MVR (Mechanical Vapor Recompression) continuous evaporative crystallization system and continuous evaporative crystallization method |
| CN103265089A (en) * | 2013-05-07 | 2013-08-28 | 西安交通大学 | High temperature high efficiency multi-effect seawater distillation desalination apparatus and method |
Non-Patent Citations (1)
| Title |
|---|
| 喷液冷却的两级无油螺杆氨气压缩机性能研究;袁皓;《压缩机技术》;20141022;第5-10页 |
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