CN107503928A - A kind of salt amount fluctuates big thermodynamic steam compressor configuration structure and operation method - Google Patents
A kind of salt amount fluctuates big thermodynamic steam compressor configuration structure and operation method Download PDFInfo
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- CN107503928A CN107503928A CN201710576017.5A CN201710576017A CN107503928A CN 107503928 A CN107503928 A CN 107503928A CN 201710576017 A CN201710576017 A CN 201710576017A CN 107503928 A CN107503928 A CN 107503928A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
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- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of salt amount fluctuates big thermodynamic steam compressor configuration structure and operation method, and the configuration structure includes：Crystallizer/evaporator, raw steam main regulating valve, first life steam pneumatic on-off valve, the first indirect steam pneumatic on-off valve, the first thermodynamic steam compressor, second life steam pneumatic on-off valve, second indirect steam pneumatic on-off valve, the second thermodynamic steam compressor, three lives steam pneumatic control valve, 3rd indirect steam pneumatic control valve, the 3rd thermodynamic steam compressor；Crystallizer/evaporator connects respective first thermodynamic steam compressor by the first indirect steam pneumatic operated valve, the second indirect steam pneumatic operated valve and the 3rd indirect steam pneumatic operated valve respectively；Raw steam is connected with the first thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd thermodynamic steam compressor respectively by the raw raw steam main of steam main regulating valve connection, and by the life steam pipe by the first life steam pneumatic operated valve, the second life steam pneumatic operated valve and three lives steam pneumatic operated valve.
Description
Technical field
Big thermodynamic steam compressor configuration structure and operation method are fluctuated the present invention relates to a kind of salt amount, particularly
For end water zero discharge and salt making system, including the end water zero discharge of the industry such as steel, electric power, chemical industry, oil and salt manufacturing
System, belong to environmentally friendly water process and salt making technology field.
Background technology
With China's rapid economic development, water environment is necessarily polluted, the draining pressure of the water environment receiving in many places
Power is increasing, and the haline water after processing is up to standard discharges local water environment can be had an impact for a long time, and high salt end concentrated water exists
Power plant's also nowhere reuse.Power plant end water zero discharge technology was quickly grown in recent years, the most wide technology of applicability be by electricity or
The energy such as steam crystallize the salinity in the concentrated water of end.
Existing evaporator and crystallizer are haline water is realized separation of solid and liquid using steam, are reduced to greatest extent new
Fresh water water withdrawal, thoroughly solve pollution problem of the power plant to water body, and be advantageous to extract utility from water, realize circulation warp
Ji.
The research emphasis of end water zero discharge technology is to reduce system operation energy consumption, and evaporator and crystallizer are energy expenditures
Key link；Thermodynamic steam compressor be TVR devices be to consume a part of high quality steam, it is compressed by thermodynamic cycle
Journey, the secondary low-grade both vapor compression come out from evaporator and crystallizer to high-grade steam, then deliver to evaporation and concentration or knot
Crystallographic system system uses as heating steam circulation, with steam saving dosage；Described TVR devices can be with various evaporators and crystallizer
It is used cooperatively, is the device for reducing energy consumption.
New power plant construction water consumption index is low, the advanced water such as reuse after employing water circulation use, cascade utilization and handling
Business administrative skill, power plant's end concentrated water salt content is higher, and water quality is with the network of waterways water water quality, coal and the lime stone product that enter power plant
Matter, unit load, each system water situation and change, excursion is big, the end water salt amount about 1 of some power plant's actual motions,
5000~4,0000ppm, much larger than the salt amount change in natural water.Therefore the range of load fluctuation of evaporator and crystallizer compared with
Greatly, the quantity of steam required for evaporating and crystallize will be different, and the TVR devices of so recycling steam are difficult type selecting, evaporator
If being mismatched with crystallizer and TVR devices, system operation can be made unstable or cause energy consumption to increase, in addition power plant's actual motion machine
Group load fluctuation is larger, causes end water also unstable, and end water zero discharge system can random groups start and stop and frequent start-stop.
The content of the invention
It is an object of the invention to overcome the shortcomings of the prior art, and one kind is provided and can guarantee that end concentrated water zero-emission
System run all right, system energy consumption and operating cost are reduced, adapt to the thermodynamic steam compressor configuration structure of frequent start-stop operating mode
And operation method.
In order to reach this purpose, technical scheme provided by the invention is：A kind of salt amount fluctuates big thermodynamic steam compression
Machine configuration structure, it includes：Crystallizer/evaporator, raw steam main regulating valve, the first life steam pneumatic on-off valve, the one or two
Secondary steam pneumatic on-off valve, the first thermodynamic steam compressor, the second life steam pneumatic on-off valve, the second indirect steam jettron
Valve, the second thermodynamic steam compressor, three lives steam pneumatic control valve, the 3rd indirect steam pneumatic control valve, the 3rd heating power steam
Vapour compressor；Described crystallizer/evaporator respectively by the first indirect steam pneumatic operated valve, the second indirect steam pneumatic operated valve and
3rd indirect steam pneumatic operated valve connects respective first thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd heating power and steamed
Vapour compressor；Raw steam is steamed by the raw raw steam main of steam main regulating valve connection, and by the life steam pipe by the first life
Vapour pneumatic operated valve, second life steam pneumatic operated valve and three lives steam pneumatic operated valve respectively with the first thermodynamic steam compressor, the second heating power
Vapour compression machine and the connection of the 3rd thermodynamic steam compressor, and in the first thermodynamic steam compressor, the second thermodynamic steam compressor
With indirect steam is compressed into high-grade steam respectively in the 3rd thermodynamic steam compressor, the first described thermodynamic steam compression
Machine, the second thermodynamic steam compressor and the 3rd thermodynamic steam compressor pick out pipe by respective high-grade steam respectively and are communicated in
Crystallization/vapo(u)rization system of indirect steam recycling.
As preferred：Described the first thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd thermodynamic steam pressure
Contracting machine is to be provided with Q respectively1、Q1、1/2Q1The thermodynamic steam compressor of three low discharges, wherein 1/2Q1Thermodynamic steam compression
It is adjustable that machine enters raw quantity of steam and indirect steam amount；The thermodynamic steam compressor of raw steam main, minimum discharge enter raw steam and
Pneumatic control valve is provided with secondary steam pipe, and according to different operating conditions, starts and stop corresponding thermodynamic steam pressure
Contracting machine.
A kind of salt amount as described above fluctuates the operation method of big thermodynamic steam compressor configuration structure, and the operation method is
According to the flow of inlet water of crystallizer/evaporator system come judge the first thermodynamic steam compressor, the second thermodynamic steam compressor and
The running status of 3rd thermodynamic steam compressor；
Crystallizer/evaporator starts and operating condition：
（1）If the strong brine flow into crystallizer/evaporator is less than 1/2Q1When, open three lives steam pneumatic control valve
With the 3rd indirect steam pneumatic control valve, the 3rd thermodynamic steam compressor operating, and to adjust raw steam female with strong brine flow
Pipe regulating valve；
（2）When the strong brine flow for entering crystallizer/evaporator is 1/2Q1When, the 3rd thermodynamic steam compressor oepration at full load；
Strong brine flow is more than 1/2Q1With less than or equal to Q1Between run, open the second life steam pneumatic on-off valve and the second two times steamed
Vapour pneumatic on-off valve, the second thermodynamic steam compressor is run, while reduce three lives steam pneumatic control valve and the three or two steaming
Vapour pneumatic control valve aperture, raw steam main control valve opening is adjusted, so as to adjust the second thermodynamic steam compressor flowrate；If enter
Enter the strong brine amount of crystallizer/evaporator in Q1~3/2 Q1During operation, the second thermodynamic steam compressor oepration at full load, by life
Steam main regulating valve is reached to a certain degree, and three lives steam pneumatic control valve and the three or two time are adjusted further according to strong brine flow
Steam pneumatic control valve, to adjust the operation of the 3rd thermodynamic steam compressor；
（3）If the strong brine flow into crystallizer/evaporator is 3/2 Q1When, the second thermodynamic steam compressor and the 3rd heating power
Vapour compression machine oepration at full load；Strong brine flow is more than 3/2 Q1With less than or equal to 2Q1Between when running, open the first life
Steam pneumatic on-off valve and the first indirect steam pneumatic on-off valve, the first thermodynamic steam compressor is run, while reduce the three lives
Steam pneumatic control valve and the 3rd indirect steam pneumatic control valve aperture, raw steam main regulating valve is adjusted, so as to adjust first,
Two thermodynamic steam compressor flowrates；Into crystallizer/evaporator strong brine amount in 2 Q1~5/2 Q1During operation, the first heating power
Vapour compression machine and the second thermodynamic steam compressor oepration at full load, raw steam main regulating valve is reached to a certain degree, then root
Three lives steam pneumatic control valve and the 3rd indirect steam pneumatic control valve are adjusted according to strong brine flow, is steamed to adjust the 3rd heating power
The operation of vapour compressor；
As preferred：When described crystallizer/evaporator is shut down：
（1）If the strong brine flow into crystallizer/evaporator is 2Q1~5/2 Q1When, raw steam main regulating valve reaches one
Determine degree, the first thermodynamic steam compressor and the second thermodynamic steam compressor oepration at full load, as strong brine flow is reduced, together
When reduce the aperture of three lives steam pneumatic control valve and the 3rd indirect steam pneumatic control valve；Strong brine flow is more than 3/2
Q1With less than or equal to 2Q1Between when running, raw steam main control valve opening is reduced, so as to adjust the compression of first and second thermodynamic steam
Machine flow；If the strong brine flow into crystallizer/evaporator is 3/2 Q1When, close the first life steam pneumatic on-off valve and the
One indirect steam pneumatic on-off valve, the first thermodynamic steam compressor of closing, the second thermodynamic steam compressor oepration at full load, simultaneously
Three lives steam pneumatic control valve, the 3rd indirect steam pneumatic control valve are opened greatly, the 3rd thermodynamic steam compressor is transported at full capacity
OK；
（2）If into crystallizer/evaporator strong brine amount in Q1~3/2 Q1During operation, the second thermodynamic steam compressor is completely negative
Lotus runs, now as strong brine flow reduces three lives steam pneumatic control valve and the 3rd indirect steam pneumatic control valve is opened
Degree；When strong brine flow is more than 1/2Q1With less than or equal to Q1Between when running, reduce raw steam main control valve opening, so as to
Reduce the second thermodynamic steam compressor flowrate；When the strong brine flow for entering crystallizer/evaporator is 1/2Q1When, close second
Raw steam pneumatic on-off valve and the second indirect steam pneumatic on-off valve, close the second thermodynamic steam compressor, while tune up the 3rd
Raw steam pneumatic control valve, the 3rd indirect steam pneumatic control valve aperture, the 3rd thermodynamic steam compressor oepration at full load；
（3）If the strong brine flow into crystallizer/evaporator is less than 1/2 Q1When, as strong brine flow is reduced, turn life down
Steam main control valve opening, the 3rd thermodynamic steam compressor treating capacity also reduce therewith, until closing.
Using conventional TVR devices configuring technical, if being configured by high salinity, system is when low saline salinity is run, steam pumping
Measure excessive, pressure in evaporator/crystallizer or vacuum can be caused to reduce, cause medium excessive boiling, easily make heat exchange tube wall
Salt crust, produce fouling and corrosion；Configured by low saline salinity, system steam pumping amount deficiency, can cause energy when high salinity is run
Consumption increase, while conventional TVR devices configuring technical needs manual control start-stop, is more suitable for continuously running.
The present invention is avoided that the defects of above-mentioned conventional TVR devices configuration operation load range is small, meets end water zero discharge
System water inlet salt content change, makes tail end wastewater Zero discharging system be run between minimum and maximum TDS, has higher range
Than.
Existing market power consumption declines, and generating set is also declined therewith using hour, therefore tail end wastewater Zero discharging system
Also can frequent start-stop therewith；The present invention sets the thermodynamic steam compressor of low discharge, and sets regulating valve on raw steam main,
Regulating valve adjusts quantity of steam with the change of inflow when evaporator/crystallizer starts and shut down, and the present invention can overcome system
The defects of start-stop need to be adjusted manually, ensure that system automatic stabilisation starts and shut down, meet frequent start-stop operating mode.
Brief description of the drawings
Fig. 1 is structure arrangement schematic diagram of the present invention.
Embodiment
The technical scheme in case study on implementation of the present invention is described below in conjunction with accompanying drawing, it is clear that described implementation
Case is only the part of the embodiment of the present invention, rather than whole embodiments are not being made in this area other application person
Under the premise of creative work, the other embodiment that is obtained belongs to protection scope of the present invention.
As shown in figure 1, salt amount of the present invention fluctuates big thermodynamic steam compressor configuration structure, it includes：Crystallization
Device/evaporator 1, raw steam main regulating valve 3, the first life steam pneumatic on-off valve 5, the first indirect steam pneumatic on-off valve 6,
First thermodynamic steam compressor 7, the second life steam pneumatic on-off valve 8, the second indirect steam pneumatic on-off valve 9, the second heating power steams
Vapour compressor 10, three lives steam pneumatic control valve 11, the pneumatically regulation 12 of the 3rd indirect steam, the 3rd thermodynamic steam compressor
13；Described crystallizer/evaporator passes through the first indirect steam pneumatic operated valve 6, the second indirect steam pneumatic operated valve 9 and the 3rd 2 respectively
Secondary steam pneumatic operated valve 12 connects respective first thermodynamic steam compressor 7, the second thermodynamic steam compressor 10 and the 3rd heating power and steamed
Vapour compressor 13；Raw steam passes through first by the raw raw steam main 4 of the connection of steam main regulating valve 3 by the life steam pipe 4
Raw steam pneumatic operated valve 5, second give birth to steam pneumatic operated valve 8 and three lives steam pneumatic operated valve 11 respectively with the first thermodynamic steam compressor
7th, the second thermodynamic steam compressor 10 connects with the 3rd thermodynamic steam compressor 13, and in the first thermodynamic steam compressor 7, second
Indirect steam is compressed into high-grade steam respectively in the thermodynamic steam compressor 13 of thermodynamic steam compressor 10 and the 3rd, it is described
The first thermodynamic steam compressor 7, the second thermodynamic steam compressor 10 and the 3rd thermodynamic steam compressor 13 respectively by respective
High-grade steam pick out pipe be communicated in indirect steam recycling crystallization/vapo(u)rization system.
Shown in figure, the first described thermodynamic steam compressor 7, the second thermodynamic steam compressor 10 and the 3rd thermodynamic steam
Compressor 13 is to be provided with Q respectively1、Q1、1/2Q1The thermodynamic steam compressor of three low discharges, wherein 1/2Q1The 3rd heating power
It is adjustable that vapour compression machine 13 enters raw quantity of steam and indirect steam amount；In raw steam main 4, the thermodynamic steam compressor of minimum discharge
Enter on raw steam and secondary steam pipe and be provided with pneumatic control valve, and according to different operating conditions, start and stop and be corresponding
Thermodynamic steam compressor.
Raw steam enters the life steam pipe 4 of TVR devices by raw steam main regulating valve 3, respectively enters the first life steam
Pneumatic on-off valve 5, second gives birth to steam pneumatic on-off valve 8 and three lives steam pneumatic control valve 11, into the first thermodynamic steam pressure
Contracting machine 7, the second thermodynamic steam compressor 10 and the 3rd thermodynamic steam compressor 13, are extracted from the secondary of crystallizer/evaporator 1
Steam, pneumatically adjusted by the first indirect steam pneumatic on-off valve 6, the second indirect steam pneumatic on-off valve 9, the 3rd indirect steam
Valve 12 respectively enters the first thermodynamic steam compressor 7, the second thermodynamic steam compressor 10 and the 3rd thermodynamic steam compressor 13, profit
After indirect steam is compressed into high-grade steam with raw steam, by the steam pipe 14 for being used to heat come out from TVR devices,
Return to crystallization/vapo(u)rization system reuse.
Described crystallizer/evaporator 1 is provided with the first thermodynamic steam compressor 7, is compressed entering the first thermodynamic steam
The first life steam pneumatic on-off valve 5 is provided with the life steam pipe 4 into TVR devices of machine 7, while is come out from crystallizer
Secondary steam pipe 2 on be provided with the first indirect steam pneumatic on-off valve 6.
Described crystallizer/evaporator 1 is provided with the second thermodynamic steam compressor 10, is compressed entering the second thermodynamic steam
The second life steam pneumatic on-off valve 8 is provided with the life steam pipe 4 into TVR devices of machine 10, while is come out from crystallizer
Secondary steam pipe 2 on be provided with the second indirect steam pneumatic on-off valve 9.
Described crystallizer/evaporator 1 is provided with the 3rd thermodynamic steam compressor 13, is entering the 3rd thermodynamic steam pressure
It is provided with three lives steam pneumatic control valve 11 on the life steam pipe 4 into TVR devices of contracting machine 13, while from crystallizer
The 3rd indirect steam pneumatic control valve 12 is provided with secondary steam pipe 2 out.
Described is provided with raw steam main regulating valve 3 on the life steam pipe 4 for entering TVR devices.
The described steam pipe 14 for being used to heat come out from TVR devices is the first thermodynamic steam compressor 7, the second heating power
The high-grade steam that vapour compression machine 10, the steam main of the 3rd thermodynamic steam compressor 13 outlet come out is back to evaporation and concentration
Or crystal system heat exchanger, for evaporating moisture.
When crystallizer/evaporator starts and run,（1）If the strong brine flow into crystallizer/evaporator is less than 1/2Q1
When, open three lives steam pneumatic control valve 11 and the 3rd indirect steam pneumatic control valve 12, the 3rd thermodynamic steam compressor 13
Operation, and as strong brine flow adjusts raw steam main regulating valve 3.
（2）When the strong brine flow for entering crystallizer/evaporator is 1/2Q1When, the 3rd thermodynamic steam compressor 13 is completely negative
Lotus runs；Strong brine flow is more than 1/2Q1With less than or equal to Q1Between when running, open the He of the second life steam pneumatic on-off valve 8
Second indirect steam pneumatic on-off valve 9, the second thermodynamic steam compressor 10 is run, while reduce three lives steam pneumatic control valve
11 and the aperture of the 3rd indirect steam pneumatic control valve 12, by adjusting raw steam main regulating valve 3, steamed to adjust the second heating power
The flow of vapour compressor 10；If into crystallizer/evaporator strong brine amount in Q1~3/2 Q1During operation, the second thermodynamic steam pressure
The oepration at full load of contracting machine 10, raw steam main regulating valve 3 is reached to a certain degree, steamed further according to the strong brine flow adjustment three lives
The indirect steam pneumatic control valve 12 of vapour pneumatic control valve 11 and the 3rd, to adjust the 3rd thermodynamic steam compressor 13.
（3）If the strong brine flow into crystallizer/evaporator is 3/2 Q1When, the second thermodynamic steam compressor 10 and
The oepration at full load of three thermodynamic steam compressor 13；Strong brine flow is more than 3/2 Q1With less than or equal to 2Q1Between when running,
The oepration at full load of two thermodynamic steam compressor 10, open the first life steam pneumatic on-off valve 5 and the first indirect steam jettron
Valve 6, the first thermodynamic steam compressor 7 is run, while reduction three lives steam pneumatic control valve 11 and the 3rd indirect steam are pneumatic
The aperture of regulating valve 12, by adjusting raw steam main regulating valve 3, to adjust the first thermodynamic steam compressor 7 and the second heating power
The flow of vapour compression machine 10；Into crystallizer/evaporator strong brine amount in 2Q1~5/2Q1During operation, the first thermodynamic steam pressure
The oepration at full load of 7 and first thermodynamic steam compressor of contracting machine 10, will raw steam main regulating valve 3 reach to a certain degree, further according to
Strong brine flow adjusts three lives steam pneumatic control valve 11 and the 3rd indirect steam pneumatic control valve 12, to adjust the 3rd heating power
Vapour compression machine 13.
When crystallizer/evaporator is shut down,（1）If the strong brine flow into crystallizer/evaporator is 2Q1~5/2 Q1When,
Raw steam main regulating valve 3 reaches to a certain degree, and the first thermodynamic steam compressor 7 and the second thermodynamic steam compressor 10 are at full capacity
Operation, as strong brine flow is reduced, while diminution three lives steam pneumatic control valve 11 and the 3rd indirect steam are pneumatically adjusted
The aperture of valve 12；Strong brine flow is more than 3/2 Q1With less than or equal to 2Q1Between when running, reduce raw steam main regulating valve
3 apertures, so as to adjust the first thermodynamic steam compressor 7 and the flow of the second thermodynamic steam compressor 10；If into crystallizer/steaming
The strong brine flow for sending out device is 3/2 Q1When, close the first life steam pneumatic on-off valve 5 and the first indirect steam pneumatic on-off valve
6, the first thermodynamic steam compressor 7 of closing, the oepration at full load of the second thermodynamic steam compressor 10, and meanwhile three lives steam is pneumatic
Regulating valve 11, the 3rd indirect steam pneumatic control valve 12 are opened greatly, the oepration at full load of the 3rd thermodynamic steam compressor 13.
（2）If into crystallizer/evaporator strong brine amount in Q1~3/2 Q1During operation, the second thermodynamic steam compressor
10 oeprations at full load, now as strong brine flow reduces three lives steam pneumatic control valve 11 and the 3rd indirect steam is pneumatically adjusted
Save the aperture of valve 12；When strong brine flow is more than 1/2Q1With less than or equal to Q1Between when running, reduce raw steam main regulating valve
3 apertures, so as to reduce the flow of the second thermodynamic steam compressor 10；When the strong brine flow for entering crystallizer/evaporator is 1/
2Q1When, the second life steam pneumatic on-off valve 8 and the second indirect steam pneumatic on-off valve 9 are closed, closes the second thermodynamic steam pressure
Contracting machine 10, while three lives steam pneumatic control valve 11, the aperture of the 3rd indirect steam pneumatic control valve 12 are tuned up, the 3rd heating power
The oepration at full load of vapour compression machine 13.
（3）If the strong brine flow into crystallizer/evaporator is less than 1/2 Q1When, as strong brine flow is reduced, adjust
The aperture of your pupil's steam main regulating valve 2, the treating capacity of the 3rd thermodynamic steam compressor 13 also reduce therewith, until closing.
This patent is provided with the thermodynamic steam compressor of three low discharges, and is steamed in raw steam main, minimum discharge heating power
Entering on raw steam and secondary steam pipe for vapour compressor sets pneumatic control valve, to meet the operation of different thermodynamic steam compressors
Excessively and crystallizer/evaporator starts and shut down operating mode.Crystallizer/evaporator is set more to adapt to frequent start-stop and salt content change greatly
End water treatment system, Zero discharging system and salt manufacturing field, enable the system to run between minimum and maximum TDS, have compared with
High range ratio.By ensureing the stable operation of crystallizer/evaporator, so as to reduce the running cost of tail end wastewater Zero discharging system
With, maintenance workload and energy consumption.
A preferable example in this patent application process is these are only, is not used for limiting the practical range of this patent, also
Other field is can be widely applied to, reference that all contents according to present patent application the scope of the claims are made, modifies or associates
All deformations, it is considered as the protection domain of this patent.
The operating load of routine techniques evaporation/crystallization system is basicly stable or amplitude of variation is small, and evaporation/crystallization device is continuously transported
OK, infrequently start-stop, TVR devices only configure one, and start-stop uses manually operated control.Of the invention and conventional TVR devices
The main distinction of configuration is to be provided with the TVR devices of three low discharges, wherein to enter quantity of steam adjustable for a TVR device.
The salt content of power plant's end concentrated water is larger according to different use water condition luffings, and highest salt content is minimum salt content
2~3 times, tail end wastewater amount is changed also with factors such as the operating conditions of generating set, and 1 TVR device optimum operation is born
Lotus is 100%, then its range of operation is 60%~110%, i.e., load range is 50%, it is impossible to meets the salt quantitative change of end concentrated water
Change scope.Controlled for the ease of system, pre-concentration is set before evaporator/crystallizer, reduction enters evaporator/crystallizer high salt
The salt amount amplitude of variation of water, can so simplify influence evaporation or crystal system load parameter, but can cause enter evaporator/
Crystallizer haline water water changes very greatly, and highest inflow is with minimum inflow up to more than 3 times.
The present invention sets the thermodynamic steam compressors of three low discharges to meet the change of end concentrated water water quality and water, and three
The processing water of platform thermodynamic steam compressor should reach the concentrated water amount into evaporation/crystallization device, consider to utilize the 3rd heating power of regulation
Vapour compression machine 13 switches the first and second thermodynamic steam compressors 7,10, realizes that load is excessive, according to the operation of TVR devices
Scope, the concentrated water amount of the 3rd thermodynamic steam compressor 13 processing is the half of the first and second thermodynamic steam compressors 7,10.
Into the concentrated water amount of evaporation/crystallization device：Q
First and second thermodynamic steam compressors 7,10 processing concentrated water amount is Q1
3rd thermodynamic steam compressor 13 handles concentrated water amount：Q1/2
Q1+ Q1+ Q1/2=Q
Then Q1=2/5Q
First and second thermodynamic steam compressor 7,10 processing concentrated water amount is 2/5Q, and the 3rd thermodynamic steam compressor 13 handles concentrated water
Measure as 1/5Q.
Claims (4)
1. a kind of salt amount fluctuates big thermodynamic steam compressor configuration structure, it includes：Crystallizer/evaporator, raw steam main
Regulating valve, the first life steam pneumatic on-off valve, the first indirect steam pneumatic on-off valve, the first thermodynamic steam compressor, the second life
Steam pneumatic on-off valve, the second indirect steam pneumatic on-off valve, the second thermodynamic steam compressor, three lives steam are pneumatically adjusted
Valve, the 3rd indirect steam pneumatic control valve, the 3rd thermodynamic steam compressor；It is characterized in that described crystallizer/evaporator point
Respective first is not connected by the first indirect steam pneumatic operated valve, the second indirect steam pneumatic operated valve and the 3rd indirect steam pneumatic operated valve
Thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd thermodynamic steam compressor；Raw steam is adjusted by raw steam main
The raw steam main of valve connection is saved, and the first life steam pneumatic operated valve, the second life steam pneumatic operated valve and the 3rd are passed through by the life steam pipe
Raw steam pneumatic operated valve connects with the first thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd thermodynamic steam compressor respectively
It is logical, and respectively will be secondary in the first thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd thermodynamic steam compressor
Both vapor compression is into high-grade steam, the first described thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd heating power
Vapour compression machine respectively by respective high-grade steam pick out pipe be communicated in indirect steam reuse crystallization/evaporation system
System.
2. salt amount according to claim 1 fluctuates big thermodynamic steam compressor configuration structure, it is characterised in that described
First thermodynamic steam compressor, the second thermodynamic steam compressor and the 3rd thermodynamic steam compressor are to be provided with Q respectively1、Q1、1/
2Q1The thermodynamic steam compressor of three low discharges, wherein 1/2Q1Thermodynamic steam compressor enter raw quantity of steam and indirect steam amount
It is adjustable；Enter on raw steam and secondary steam pipe to be provided with pneumatically in the thermodynamic steam compressor of raw steam main, minimum discharge
Regulating valve, and according to different operating conditions, start and stop corresponding thermodynamic steam compressor.
3. a kind of salt amount as claimed in claim 1 fluctuates the operation method of big thermodynamic steam compressor configuration structure, it is special
Sign is that the operation method is to judge the first thermodynamic steam compressor, the according to the flow of inlet water of crystallizer/evaporator system
The running status of two thermodynamic steam compressors and the 3rd thermodynamic steam compressor；
Crystallizer/evaporator starts and operating condition：
（1）If the strong brine flow into crystallizer/evaporator is less than 1/2Q1When, open three lives steam pneumatic control valve and the
Three indirect steam pneumatic control valves, the 3rd thermodynamic steam compressor operating, and adjusted as strong brine flow adjusts raw steam main
Save valve；
（2）When the strong brine flow for entering crystallizer/evaporator is 1/2Q1When, the 3rd thermodynamic steam compressor oepration at full load；
Strong brine flow is more than 1/2Q1With less than or equal to Q1Between run, open the second life steam pneumatic on-off valve and the second two times steamed
Vapour pneumatic on-off valve, the second thermodynamic steam compressor is run, while reduce three lives steam pneumatic control valve and the three or two steaming
Vapour pneumatic control valve aperture, raw steam main control valve opening is adjusted, so as to adjust the second thermodynamic steam compressor flowrate；If enter
Enter the strong brine amount of crystallizer/evaporator in Q1~3/2 Q1During operation, the second thermodynamic steam compressor oepration at full load, by life
Steam main regulating valve reaches to a certain degree, then as strong brine flow adjusts three lives steam pneumatic control valve and the three or two time
Steam pneumatic control valve, to adjust the operation of the 3rd thermodynamic steam compressor；
（3）If the strong brine flow into crystallizer/evaporator is 3/2 Q1When, the second thermodynamic steam compressor and the 3rd heating power
Vapour compression machine oepration at full load；Strong brine flow is more than 3/2 Q1With less than or equal to 2Q1Between when running, open the first life
Steam pneumatic on-off valve and the first indirect steam pneumatic on-off valve, the first thermodynamic steam compressor is run, while reduce the three lives
Steam pneumatic control valve and the 3rd indirect steam pneumatic control valve aperture, raw steam main regulating valve is adjusted, so as to adjust first,
Two thermodynamic steam compressor flowrates；Into crystallizer/evaporator strong brine amount in 2 Q1~5/2 Q1During operation, the first heating power
Vapour compression machine and the second thermodynamic steam compressor oepration at full load, raw steam main regulating valve is reached to a certain degree, then with
Strong brine flow adjusts three lives steam pneumatic control valve and the 3rd indirect steam pneumatic control valve, to adjust the 3rd thermodynamic steam
Compressor.
4. salt amount fluctuates the operation method of big thermodynamic steam compressor configuration structure according to claim 2, its feature exists
When described crystallizer/evaporator shutdown：
（1）If the strong brine flow into crystallizer/evaporator is 2Q1~5/2 Q1When, raw steam main regulating valve reaches necessarily
Degree, the first thermodynamic steam compressor and the second thermodynamic steam compressor oepration at full load, as strong brine flow is reduced, simultaneously
Reduce the aperture of three lives steam pneumatic control valve and the 3rd indirect steam pneumatic control valve；Strong brine flow is more than 3/2 Q1
With less than or equal to 2Q1Between when running, raw steam main control valve opening is reduced, so as to adjust the compression of first and second thermodynamic steam
Machine flow；If the strong brine flow into crystallizer/evaporator is 3/2 Q1When, close the first life steam pneumatic on-off valve and the
One indirect steam pneumatic on-off valve, the first thermodynamic steam compressor of closing, the second thermodynamic steam compressor oepration at full load, simultaneously
By three lives steam pneumatic control valve, the 3rd indirect steam pneumatic control valve standard-sized sheet, the 3rd thermodynamic steam compressor is transported at full capacity
OK；
（2）If into crystallizer/evaporator strong brine amount in Q1~3/2 Q1During operation, the second thermodynamic steam compressor is completely negative
Lotus runs, now as strong brine flow reduces three lives steam pneumatic control valve and the 3rd indirect steam pneumatic control valve is opened
Degree；When strong brine flow is more than 1/2Q1With less than or equal to Q1Between when running, reduce raw steam main control valve opening, so as to
Reduce the second thermodynamic steam compressor flowrate；When the strong brine flow for entering crystallizer/evaporator is 1/2Q1When, close second
Raw steam pneumatic on-off valve and the second indirect steam pneumatic on-off valve, close the second thermodynamic steam compressor, while tune up the 3rd
Raw steam pneumatic control valve, the 3rd indirect steam pneumatic control valve aperture, the 3rd thermodynamic steam compressor oepration at full load；
（3）If the strong brine flow into crystallizer/evaporator is less than 1/2 Q1When, as strong brine flow is reduced, turn raw steaming down
Vapour main pipe control valve opening, the 3rd thermodynamic steam compressor treating capacity also reduce therewith, until closing.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6352413B1 (en) * | 1998-01-27 | 2002-03-05 | Evgueni D. Petroukhine | Multi-stage jet pump arrangement for a vacuum apparatus |
| CN101481153A (en) * | 2008-04-01 | 2009-07-15 | 北京首钢国际工程技术有限公司 | Process for seawater desalination by low temperature and low pressure steam |
| CN203146357U (en) * | 2013-01-08 | 2013-08-21 | 华电电力科学研究院 | Cooling water circulating pump device |
| CN207920829U (en) * | 2017-07-14 | 2018-09-28 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of salt amount fluctuates big thermodynamic steam compressor configuration structure |
-
2017
- 2017-07-14 CN CN201710576017.5A patent/CN107503928B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6352413B1 (en) * | 1998-01-27 | 2002-03-05 | Evgueni D. Petroukhine | Multi-stage jet pump arrangement for a vacuum apparatus |
| CN101481153A (en) * | 2008-04-01 | 2009-07-15 | 北京首钢国际工程技术有限公司 | Process for seawater desalination by low temperature and low pressure steam |
| CN203146357U (en) * | 2013-01-08 | 2013-08-21 | 华电电力科学研究院 | Cooling water circulating pump device |
| CN207920829U (en) * | 2017-07-14 | 2018-09-28 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of salt amount fluctuates big thermodynamic steam compressor configuration structure |
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