CN207566926U - Gas water evaporative crystallization processing unit with high salt - Google Patents
Gas water evaporative crystallization processing unit with high salt Download PDFInfo
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- CN207566926U CN207566926U CN201721624346.4U CN201721624346U CN207566926U CN 207566926 U CN207566926 U CN 207566926U CN 201721624346 U CN201721624346 U CN 201721624346U CN 207566926 U CN207566926 U CN 207566926U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model provides a kind of gas water evaporative crystallization processing unit with high salt, including dynamical system, pre-heating system, degassing system, evaporative condenser system, steam compression system, evaporation and crystallization system, condensation water recovery and use system, crystallization salt making system, steam generating system and residual neat recovering system.Dynamical system includes gas engine, generator and power supply and distribution mechanism.Pre-heating system includes the first preheater, the second preheater and third preheater.Degassing system includes degassing tank and vacuum pump.Evaporative condenser system includes concentrate circulating pump, falling film evaporator and gas-liquid separator.Steam compression system includes motor, compressor and spray thrower.Evaporation and crystallization system includes crystallizer, saltwater brine circulating pump, forced-circulation evaporator and steam jet pump.Condensation water recovery and use system includes treated water tank and clarified water pump.It crystallizes salt making system and includes thickener, centrifuge, mother liquor tank, mother liquor pump and drying bed.Steam generating system includes feed pump and waste heat boiler.
Description
Technical field
The utility model is related to gas field water treatment field with high salt more particularly to a kind of gas water evaporative crystallization processing dresses with high salt
It puts.
Background technology
The big feature of recovered water complicated components, intractability that oil gas field generates in recovery process, if direct emission can be made
Into serious environmental pollution and ecological disruption.The prior art not yet forms the efficient solutions to gas field produced water treatment, real
Border designing scheme is mostly using independent boiler, evaporation process module, and coupling is poor between module, whole installation areas
Greatly, overall investment is high, and maintenance personnel is more, and operating cost is high.
Utility model content
In view of the problem of background technology, the purpose of this utility model is to provide a kind of water evaporation knots in gas field with high salt
Brilliant processing unit can improve energy utilization rate and reduce cost.
To achieve these goals, the utility model provides a kind of gas water evaporative crystallization processing unit with high salt, packet
Dynamical system, pre-heating system, degassing system, evaporative condenser system, steam compression system, evaporation and crystallization system, condensed water is included to return
It receives and utilizes system, crystallization salt making system, steam generating system and residual neat recovering system.
Dynamical system includes gas engine, generator and power supply and distribution mechanism；Outer combustion gas and air enter combustion gas hair
Motivation burns and generates the flue gas of high temperature, and the flue gas of high temperature enters steam generating system；Gas engine works and drives power generation
Machine generates electricity, and the electric current of electrical power generators is exported by power supply and distribution mechanism.
Pre-heating system includes the first preheater, the second preheater and third preheater, and gas water is divided into two parts and difference
It is heated into the first preheater and the second preheater, then converges to third preheater again and be heated to satisfying in third preheater
And state.
Degassing system include degassing tank and vacuum pump, by third preheater heating after gas water enter degassing tank and
It is flowed from above to below in degassing tank, while deviates from fixed gas, the fixed gas of abjection is discharged under the swabbing action of vacuum pump.
Evaporative condenser system includes concentrate circulating pump, falling film evaporator and gas-liquid separator；Gas water after degassing into
Enter concentrate circulating pump to be pressurized and form concentrate, concentrate is divided into two parts, and a part of concentrate enters falling film evaporator, another
Partial concentration liquid enters evaporation and crystallization system；The evaporation of gas-liquid two-phase is absorbed heat and is evaporated into the concentrate in falling film evaporator
Liquid；Evaporation liquid enters gas-liquid separator and is separated into indirect steam and separating liquid, and separating liquid is discharged and converged from gas-liquid separator
It is latter with concentrate circulating pump supercharging is entered to enter the gas water after degassing, the indirect steam escapes and enter steaming from gas-liquid separator
Vapour pressure compression system.
Steam compression system includes motor, compressor and spray thrower；Motor is connected to receive for matching with power supply and distribution mechanism
The electric current of motor structure output simultaneously drives compressor operating；Gas-liquid separator separates, which go out indirect steam and enter in compressor, to be compressed, and is pressed
High steam after contracting enters falling film evaporator；Spray thrower is connected with condensation water recovery and use system and is arranged on suction port of compressor
Place, spray thrower are used to spray into the purified water in condensation water recovery and use system in compressor；Into the height in falling film evaporator
Steam is pressed to heat the concentrate in falling film evaporator, then condensed water flows into condensation water recovery and use system, remaining
Fixed gas carries some vapor and flows into third preheater from falling film evaporator.
Evaporation and crystallization system includes crystallizer, saltwater brine circulating pump, forced-circulation evaporator and steam jet pump；Dope follows
Ring pump another part concentrate after supercharged, which enters in forced-circulation evaporator, to be heated, and the concentrate after heating enters crystallization
It is flashed in device；The indirect steam formed after concentrate flash distillation flows into steam jet pump；The crystal salt that flash distillation generates deposits to crystallization
To form salt slurry, salt slurry enters crystallization salt making system by pipeline for device bottom；It flashes remaining saturation saltwater brine and flows into saltwater brine cycle
Pump, and reenter forced-circulation evaporator under the driving of saltwater brine circulating pump；Steam jet pump is into forced-circulation evaporator
Heat source stream is sprayed, the heat source stream enters forced-circulation evaporator heat release and condenses, and condensed water flows into condensed water and returns
It receives using system, remaining fixed gas carries some vapor and flows into third preheater from forced-circulation evaporator.
What the fixed gas for carrying steam and forced-circulation evaporator of falling film evaporator discharge were discharged carries steam not
Solidifying gas enters heat release in third preheater, and gas water in third preheater is heated to the saturation state；Fixed gas carries
Steam water is condensed into after heat release in third preheater and flows into condensation water recovery and use system, remaining fixed gas flows into de-
Gas tank, and flowed from bottom to top in degassing tank to impact the gas water in degassing tank, so as to which the fixed gas in gas water be blown
It is de-；All fixed gases in all degassing tanks are discharged under the swabbing action of vacuum pump.
Condensation water recovery and use system includes treated water tank and clarified water pump；Water that third preheater is condensed out, falling liquid film
Water that the water and forced-circulation evaporator that evaporator condensation goes out are condensed out flows into treated water tank using as the purified water；Purification
Water pump is connected with treated water tank and purified water is sent into the first preheater and spray thrower, flows through the purified water heat release of the first preheater
To heat the gas water in the first preheater, purified water is sprayed into compressor by spray thrower.
It crystallizes salt making system and includes thickener, centrifuge, mother liquor tank, mother liquor pump and drying bed；The salt that crystallizer is formed
Slurry sequentially enters thickener, centrifuge and drying bed；Salt slurry settles layering in thickener, and the clear liquid on upper strata flows into mother liquor tank,
The high concentration salt slurry of lower floor enters centrifuge；High concentration salt slurry centrifugal dehydration and forms wet salt in centrifuge, the wet salt into
Enter drying bed and be dried to crude salt；Dope that centrifuge is isolated flow into mother liquor tank and with flow into mother liquor tank and from thickener
Clear liquid is mixed to form mixed liquor；Mixed liquor in mother liquor tank is sent into crystallizer and recrystallized by mother liquor pump.
Steam generating system includes feed pump and waste heat boiler；Feed pump connects treated water tank and waste heat boiler, and will be net
The purified water changed in water pot is sent into waste heat boiler；The flue gas of the high temperature of gas engine discharge flows through waste heat boiler and heats waste heat
Purified water in boiler generates high steam after purified water heat absorption, and high steam enters steam jet pump, and with into steam
The heat source stream is formed after indirect steam mixing in jet pump.
Residual neat recovering system includes cooling circuit and air preheater；Cooling circuit connects gas engine and the second preheating
Device, the heat of gas engine that the cooling water inside cooling circuit absorbs and heat exchange to the gas water in the second preheater with
Heat the gas water in the second preheater；The flue gas of high temperature enters air preheater and heat release after passing through waste heat boiler, external
Cold air enters air preheater and enters drying bed after heat absorption.
The beneficial effects of the utility model are as follows：
The gas water evaporative crystallization processing unit with high salt of the utility model makes full use of the flue gas and high temperature of gas engine
The waste heat of cooling water, thermal energy step utilization is more reasonable, and energy consumption efficiency is high；Using the hot-air that flue gas cold air is formed as dry
The stripping working medium and combustion adjuvant of dry bed, eliminate the consumption of public heat resource；The spray thrower being arranged at suction port of compressor can
To eliminate steam superheating in whole compression processes, prevent compressor high temperature from damaging；By setting third preheater that can both return
Receive heat in fixed gas, and the steam entrained by recyclable fixed gas；Using fixed gas remaining after recovered steam as degassing tank
Heating and stripping working medium, i.e., fully recycled the sensible heat of fixed gas, and can efficient discharge system；Steam jet pump was set both
The latent heat of crystallizer discharge indirect steam can be all recycled, and the consumption of the high steam of waste heat boiler generation can be saved, greatly
Reduce operating cost greatly.
Description of the drawings
Fig. 1 is the schematic diagram according to the gas water evaporative crystallization processing unit with high salt of the utility model.
Wherein, the reference numerals are as follows：
1 dynamical system, 6 evaporation and crystallization system
11 gas engine, 61 crystallizer
12 generator, 62 saltwater brine circulating pump
13 power supply and distribution mechanism, 63 forced-circulation evaporator
2 pre-heating system, 64 steam jet pump
21 first preheater, 7 condensation water recovery and use system
22 second preheater, 71 treated water tank
23 third preheater, 72 clarified water pump
3 degassing systems 8 crystallize salt making system
31 degassing tank, 81 thickener
32 vacuum pump, 82 centrifuge
4 evaporative condenser system, 83 mother liquor tank
41 concentrate circulatings pump 84 mother liquors pump
42 falling film evaporator, 85 drying bed
43 gas-liquid separator, 9 steam generating system
5 steam compression system, 91 feed pump
51 motor, 92 waste heat boiler
52 compressor A residual neat recovering systems
53 spray thrower A1 cooling circuits
54 moisture detector A2 air preheaters
Specific embodiment
It is described in detail the gas water evaporative crystallization processing unit with high salt of the utility model with reference to the accompanying drawings.
With reference to Fig. 1, gas water evaporative crystallization processing unit with high salt according to the present utility model includes dynamical system 1, preheating
System 2, degassing system 3, evaporative condenser system 4, steam compression system 5, evaporation and crystallization system 6, condensation water recovery and use system
7th, salt making system 8, steam generating system 9 and residual neat recovering system A are crystallized.
Dynamical system 1 includes gas engine 11, generator 12 and power supply and distribution mechanism 13；Outer combustion gas and air enter
Gas engine 11 burns and generates the flue gas of high temperature, and the flue gas of high temperature enters steam generating system 9；Gas engine 11 works
And generator 12 is driven to generate electricity, the electric current that generator 12 generates electricity is exported by power supply and distribution mechanism 13.
Pre-heating system 2 includes the first preheater 21, the second preheater 22 and third preheater 23, and gas water is divided into two parts
And it respectively enters the first preheater 21 and the second preheater 22 heats, then converge to third preheater 23 again and is preheated in third
Saturation state is heated in device 23.
Degassing system 3 includes degassing tank 31 and vacuum pump 32, and the gas water after the heating of third preheater 23 enters de-
Gas tank 31 simultaneously flows from above to below, while deviate from fixed gas in degassing tank 31, and the fixed gas of abjection is in the suction of vacuum pump 32
Effect is lower to discharge.
Evaporative condenser system 4 includes concentrate circulating pump 41, falling film evaporator 42 and gas-liquid separator 43；Gas after degassing
Water in field enters concentrate circulating pump 41 and is pressurized and forms concentrate, and concentrate is divided into two parts, and a part of concentrate enters falling liquid film steaming
Device 42 is sent out, another part concentrate enters evaporation and crystallization system 6；It absorbs heat and is evaporated into the concentrate in falling film evaporator 42
The evaporation liquid of gas-liquid two-phase；Evaporation liquid enters gas-liquid separator 43 and is separated into indirect steam and separating liquid, and separating liquid is from gas-liquid
Separator 43 is discharged and the gas water after deaerating is latter with 41 supercharging of concentrate circulating pump is entered, and the indirect steam is from gas importing
Liquid/gas separator 43 escapes and enter steam compression system 5.
Steam compression system 5 includes motor 51, compressor 52 and spray thrower 53；Motor 51 is connected with power supply and distribution mechanism 13
To receive the electric current of the output of power supply and distribution mechanism 13 and compressor 52 driven to work；Gas-liquid separator 43 isolates indirect steam entrance
It is compressed in compressor 52, compressed high steam enters falling film evaporator 42；Spray thrower 53 and condensation water recovery and use system 7
It is connected and is arranged on 52 inlet of compressor, spray thrower 53 is used to the purified water in condensation water recovery and use system 7 spraying into pressure
In contracting machine 52；The concentrate in falling film evaporator 42 is heated into the high steam in falling film evaporator 42, after then condensing
Water flow into condensation water recovery and use system 7, remaining fixed gas carries some vapor, and from falling film evaporator 42 to flow into third pre-
Hot device 23.
Evaporation and crystallization system 6 includes crystallizer 61, saltwater brine circulating pump 62, forced-circulation evaporator 63 and steam jet pump
64；Concentrate circulating 41 another part concentrates after supercharged of pump, which enter in forced-circulation evaporator 63, to be heated, after heating
Concentrate, which enters in crystallizer 61, to be flashed；The indirect steam formed after concentrate flash distillation flows into steam jet pump 64；Flash distillation generates
Crystal salt deposit to 61 bottom of crystallizer to form salt slurry, salt slurry enters crystallization salt making system 8 by pipeline；It flashes remaining
Saturation saltwater brine flows into saltwater brine circulating pump 62, and forced-circulation evaporator 63 is reentered under the driving of saltwater brine circulating pump 62；It steams
Vapour jet pump 64 sprays heat source stream into forced-circulation evaporator 63, and the heat source stream enters forced-circulation evaporator 63 and puts
Heat simultaneously condenses, and condensed water flows into condensation water recovery and use system 7, and remaining fixed gas carries some vapor from forced circulation
Evaporator 63 flows into third preheater 23.
What the fixed gas for carrying steam and forced-circulation evaporator 63 of the discharge of falling film evaporator 42 were discharged carries steam
Fixed gas enter heat release in third preheater 23, gas water in third preheater 23 is heated to the saturation state；No
The steam that solidifying gas carries is condensed into water in third preheater 23 and flows into condensation water recovery and use system 7 after heat release, remaining
Fixed gas flows into degassing tank 31, and is flowed from bottom to top in degassing tank 31 to impact the gas water in degassing tank 31, thus will
Fixed gas stripping in gas water；All fixed gases in all degassing tanks 31 are discharged under the swabbing action of vacuum pump 32.
Condensation water recovery and use system 7 includes treated water tank 71 and clarified water pump 72；What third preheater 23 was condensed out
Water that the water and forced-circulation evaporator 63 that water, falling film evaporator 42 are condensed out are condensed out flows into treated water tank 71 using as institute
State purified water；Clarified water pump 72 is connected with treated water tank 71 and purified water is sent into the first preheater 21 and spray thrower 53, flows through
To heat the gas water in the first preheater 21, spray thrower 53, which sprays into purified water, to be compressed for the purified water heat release of first preheater 21
Machine 52.
It crystallizes salt making system 8 and includes thickener 81, centrifuge 82, mother liquor tank 83, mother liquor pump 84 and drying bed 85；Crystallization
The salt slurry that device 61 is formed sequentially enters thickener 81, centrifuge 82 and drying bed 85；Salt slurry settles layering in thickener 81, on
The clear liquid of layer flows into mother liquor tank 83, and the high concentration salt slurry of lower floor enters centrifuge 82；High concentration salt slurry centrifuges in centrifuge 82
It is dehydrated and forms wet salt, the wet salt enters drying bed 85 and is dried to crude salt；The dope that centrifuge 82 is isolated flows into mother liquor tank
83 and with flow into mother liquor tank 83 and from the clear liquid of thickener 81 be mixed to form mixed liquor；Mother liquor pump 84 will be in mother liquor tank 83
Mixed liquor is sent into crystallizer 61 and is recrystallized.
Steam generating system 9 includes feed pump 91 and waste heat boiler 92；Feed pump 91 connects treated water tank 71 and waste heat pot
Stove 92, and the purified water in treated water tank 71 is sent into waste heat boiler 92；The flue gas for the high temperature that gas engine 11 is discharged flows through
Waste heat boiler 92 simultaneously heats the purified water in waste heat boiler 92, generates high steam after purified water heat absorption, high steam enters steaming
Vapour jet pump 64, and forming the heat source stream with entering after the indirect steam in steam jet pump 64 mixes.
Residual neat recovering system A includes cooling circuit A1 and air preheater A2；Cooling circuit A1 connects gas engine 11
The heat of gas engine 11 and heat exchange absorbed with the second preheater 22, the cooling water inside cooling circuit A1 is pre- to second
Gas water in hot device 22 is to heat the gas water in the second preheater 22；The flue gas of high temperature enters sky after passing through waste heat boiler 92
Air preheater A2 and heat release, external cold air enter air preheater A2 and enter drying bed 85 after heat absorption.Cool down water cooling
But it absorbs heat and heats up after gas engine 11, cool down subsequently into heat release in the second preheater 222, combustion gas hair is back flowed back into after cooling
Motivation 11 is to carry out next cycle.
The gas water evaporative crystallization processing unit with high salt of the utility model, which does work to generate electricity with gas engine 11, provides power
Source drives compressor 52 and pump (feed pump 91, concentrate circulating pump 41 etc.)；Made with the high-temperature cooling water of gas engine 11
To preheat heat source, processing is evaporated gas water, and after a large amount of condensed water is recycled using mechanical compression evaporation technique, production
First portion concentrate；Then waste heat boiler 92 is recycled to recycle the heat of remaining high-temperature flue gas after gas engine 11 is done work simultaneously
High steam is generated, using this high steam as the power steam of driving steam jet pump 64；Using thermal compression evaporation technique
Further evaporative crystallization processing, and the discharge part salt slurry after a large amount of condensed water is recycled are carried out to concentrate；Finally recycle
The sent out part electrical energy drive centrifuge 82 of combustion gas acting and mother liquor pump 84 thicken salt slurry, dehydration generates wet salt；
Medium temperature flue gas (120 DEG C -180 DEG C) the heating environment air discharged using waste heat boiler 92, and then hot-air is generated, with hot-air
Dehumidifying is dried to wet salt for heat source and generates crude salt.
Specifically, the gas water evaporative crystallization processing unit with high salt of the utility model to the processing step of gas water with high salt such as
Under：
(1) preheating degassing：The gas water of charging is divided into two-way and enters the first preheater 21 and the second preheater 22 simultaneously
It is heated, the gas water after being heated enters back into third preheater 23 and converges, and by from falling film evaporator 42 and pressure
Circulating evaporator 63 discharges the on-condensible gas heating for carrying steam, is re-introduced into spray atomizing in degassing tank 31, is formed full
It flows with water and from top to bottom, flow process and is blown by the transmission of heat by contact of bottom on-condensible gas (come from third preheater 23)
Take off not congealing into point in saturation gas water.
(2) circulating and evaporating：Point that the saturation gas water of 31 bottom of degassing tank outflow is then discharged with 43 bottom of gas-liquid separator
It chaotropic enters 41 supercharging of concentrate circulating pump after converging after, forms concentrate and is simultaneously divided into two-way, wherein concentrate is from top all the way
The evaporation liquid for being formed gas-liquid two-phase by thermal evaporation in falling film evaporator 42 and wherein is entered, this strand evaporation liquid enters back into gas
In liquid/gas separator 43, and wherein carry out gas-liquid two-phase separation, by 43 bottom of gas-liquid separator discharge separating liquid, then with heating
It is recycled next time after gas water mixing after degassing.
(3) compression condensation：The indirect steam separated in gas-liquid separator 43 is entered in compressor 52, same in compression process
When by 53 work of water sprinkling for better material moisture of spray thrower, so as to ensure compressed steam always in saturation state, compressor outlet forms saturation
High steam；This strand of high steam is condensed then into falling film evaporator 42 after discharging heat in falling film evaporator 42
Get off and flow back into treated water tank 71.Then entrainment portions steam enters the heating of third preheater 23 gas field to remaining fixed gas
Water, residue vapor are condensed out and are flowed back into treated water tank 71.Remaining fixed gas enters back into heating in degassing tank 31 and blows
Desaturation gas water simultaneously carries the fixed gas of abjection and enters vacuum pump 32 from 31 top of degassing tank, is finally discharged into air.
(4) recycling condensing water：A part of purified water stored in treated water tank 71 divides after the supercharging of clarified water pump 72
For two-way, purified water is in addition net all the way into the first preheater 21 heating gas water and the discharge system after heat is discharged all the way
It is the steam humidifying desuperheat overheated to change water to enter in spray thrower 53.Another part purified water is then pressurized by feed pump 91
Enter waste heat boiler 92 afterwards, inhale power steam of the thermogenetic high steam as steam jet pump 64.
(5) condensing crystallizing：By the other concentrate all the way of 41 discharge of concentrate circulating pump after being pressurized with saltwater brine circulating pump 62
Saturation saltwater brine converge after enter in forced-circulation evaporator 63 be heated, enter back into crystallizer 61, and carry out wherein
Flash distillation, gas-liquid two-phase are detached and are crystallized, and crystalline portion therein forms salt slurry in 61 bottom of crystallizer and by 61 bottom of crystallizer
Comb discharge, middle and lower part comb discharge saturation saltwater brine then carried out after being mixed with the concentrate of evaporative condenser system 4 under
One cycle.
(6) dry salt manufacturing：The salt slurry discharged by crystallizer 61 then enters gravitational settling in thickener 81 and is layered, bottom
High concentration salt slurry escape and enter centrifugal dehydration in centrifuge 82, and then form wet salt；Wet salt enter in drying bed 85 by
Moisture whole stripping in wet salt is come out and is discharged into air, finally by drying bed 85 by heating and stripping to bottom hot-air
The solid content of output is crude salt product.The dope of clear liquid and centrifuge 82 discharge on 81 upper strata of thickener flows back into mother liquor tank again
It is collected in 83, and returns to crystallizer 61 after by 84 supercharging of mother liquor pump and crystallized salt manufacturing next time.
The gas water evaporative crystallization processing unit with high salt of the utility model is to the utilization step of 11 thermal energy of gas engine：
(1) fuel gas generation heat supply：It is entered in gas engine 11 after burning and produced by the combustion air after heating and combustion gas
Raw high temperature and high pressure flue gas, the flue gas pushing generator 12 acting power generation, is system automatic control and pump system power supply；It is remaining after acting
Flue gas left with the high temperature of (400 DEG C -600 DEG C), and enter in waste heat boiler 92 as heat source heating purified water to be formed
High steam, this strand of high steam can be used as power steam driving steam jet pump 64 to work.
(2) cooling water heat recycles：By the high-temperature cooling water that gas engine 11 is discharged into the second preheater 22, and
Cool down after being heated to gas water, then return gas engine 11 and carry out circulating cooling.
(3) low-temperature flue gas waste heat recycles.The low-temperature flue gas discharged by waste heat boiler 92, by air preheater A2, and
Air is discharged into after heating cold air again.Air after heating respectively enters drying bed 85 and removes dry wet salt and stripping moisture content therein
And impurity, then drain into air.
In conclusion the gas water evaporative crystallization processing unit with high salt of the utility model makes full use of gas engine 11
The waste heat of flue gas and high-temperature cooling water, thermal energy step utilization is more reasonable, and energy consumption efficiency is high；The heat that flue gas cold air is formed
Stripping working medium and combustion adjuvant of the air as drying bed 85, eliminate the consumption of public heat resource；Compressor 52 is arranged on to enter
Spray thrower 53 at mouthful can eliminate steam superheating in whole compression processes, prevent 52 high temperature of compressor from damaging；Pass through setting
Third preheater 23 can not only recycle heat in fixed gas, but also the steam entrained by recyclable fixed gas；It will be remained after recovered steam
Remaining fixed gas has fully recycled the sensible heat of fixed gas, and can efficiently arrange as the heating of degassing tank 31 and stripping working medium
Go out system；Setting steam jet pump 64 can all recycle crystallizer 61 and discharge the latent heat of indirect steam and save waste heat pot
The consumption for the high steam that stove 92 generates, greatly reduces operating cost.
The gas water evaporative crystallization processing unit with high salt of the utility model, which is suitable for scene, the with high salt of abundant clean energy resource
The processing engineering of high hard waste water.For example, available for processing well site gas field recovered water.
The gas water evaporative crystallization processing unit with high salt of the utility model is using the natural gas that well site is had by oneself as the energy, with combustion
Gas engine 11 and waste heat boiler 92 are main powering device, with the mechanical compression of compressor 52 and the heating power of steam jet pump 64
It sprays for main technique, is distributed rationally by the thermo-electrically output of combustion gas energy and fully sharp to waste heats such as flue gas, high-temperature cooling waters
With the high-efficiency evaporating of gas water is driven to concentrate and crystallization salt manufacturing, so as to fulfill the efficient cascade utilization of thermal energy, reduces unit scale
With reduction pilot process, integrated operation energy consumption is reduced, reduces whole water process integrated operation cost.Since final products are mainly
Purified water and crude salt, the processing of entire recovered water is close to zero-emission.In addition, at the gas water evaporative crystallization with high salt of the utility model
Reason device, which relies primarily on, itself realizes heat, electricity supply, and external energy consumption dependence is less, and operating cost is low, and independence is stronger；Operating mode is fitted
Answering property is good, and device is compact to be taken up little area, and maintenance personnel is few, and investment amount is low, it is easy to accomplish.
The outer combustion gas is self-produced natural gas, condensate gas, shale gas or the oil field gas in gas field, certainly or
The higher gases of methane contents such as compressed natural gas, the liquefied natural gas of outside supply.
Gas engine 11 can miniature combustion engine, gas turbine or internal combustion engine, be specifically dependent upon in-situ processing scale.
Compressor 52 can be Roots Compressor, centrifugal compressor, wind turbine, screw compressor or reciprocating compression
Machine is specifically dependent upon evaporation capacity and pressure ratio.
11 main purpose of gas engine is extraneous combustion gas and hot-air being introduced into gas engine 11, utilize
Fuel gas buring externally does work, so as to which combustion gas chemical energy is converted into kinetic energy.Generator 12 is used to combustion gas work done being converted into
Alternating current.Power supply-distribution system then includes transformer, supply line, generator powered cabinet, load power distribution cabinet, is mainly used in handing over
Galvanic electricity carries out the processing such as rectifier transformer, and parameter powers to the load as desired.Combustion gas carries out high temperature in gas engine 11
High-temperature flue gas is generated after burning, by externally doing work, the interior energy part of combustion gas switchs to kinetic energy and generator 12 is driven to work, and then
Generate high-grade alternating current；By supply line and the electric cabinet of power supply, by the electricity for the stabilization that alternating current becomes having certain voltage
Power exports, and is used as interface by power distribution cabinet, and the parameter for converting electrical energy into pump needs is exported to electrical equipment.
First preheater 21 is purified water-gas field water- to-water heat exchanger, and its object is to utilize purified water heating part gas field
Water, so as to reclaiming clean water waste heat.Second preheater 22 is cooling water-gas field water- to-water heat exchanger, and its object is to be sent out using combustion gas
The high-temperature cooling water heating part charging gas water that motivation 11 is discharged, so as to recycle the waste heat of cooling water.Third preheater 23 is
Fixed gas --- gas field water- to-water heat exchanger its object is to heat gas water using the high temperature fixed gas for carrying part water vapour, makes
It obtains gas water and reaches saturation state, so as to recycle the waste heat of on-condensible gas and recovery section condensed water.The purpose of degassing tank 31 exists
In gas water is become droplet by spray atomizing, the fixed gas that it is made to flow downward and is flowed from bottom to top rushes
It hits, is evaporated by heat and mass partial drop, reduce the solubility of on-condensible gas in gas water, thus will be in gas water
CO2、O2、N2、H2S, organic volatile grades on-condensible gas whole stripping, and passes through 31 tank deck discharge system of degassing tank, degassing tank 31
Gas water after bottom collection to degassing.
First preheater 21 and the second preheater 22 can be plate heat exchanger or shell-and-tube heat exchanger, and third preheater 23 is
Shell-and-tube preheater.
Degassing tank 31 can be thermal type degassing tank, vacuum dust cather or blowing-type degassing tank.
Its object is to partial concentration liquid is evaporated to and generated the evaporation containing biphase gas and liquid flow for falling film evaporator 42
Liquid, while will be condensed out by 52 steam after supercharged of compressor.Gas-liquid separator 43 is carried out its object is to evaporate liquid
Gas-liquid separation, inside wire mesh demister and baffle plate are installed, for remove indirect steam entrainment mist, mist eliminating generate
Water is flowed back into the separating liquid of 43 bottom of gas-liquid separator, is carried liquid measure so as to eliminate indirect steam, is reduced the foam of separating liquid
Amount.The concentrate circulating pump 41 mainly uses the chemical pump of low lift and large flow rate, and its object is to be carried for mixed concentrate
For kinetic energy, it is made to overcome flow resistance and be circulated according to certain flow rate.
Falling film evaporator 42 is vertical tube falling evaporator, plate-type down-film evaporator or horizontal pipe falling film evaporator；
Gas-liquid separator 43 can be vertical gas-liquid separator, horizontal type gas and liquid separator, gas-liquid gravity separator or
Vortex gas-liquid separator.
52 main purpose of compressor be by the indirect steam separated in gas-liquid separator suck compressor 52 in into
Row is pressurized and heats up.Power supply electric energy is mainly converted into 52 required mechanical energy of compressor by motor 51.Spray thrower 53 for pair
Indirect steam spray cleaning water is to eliminate the degree of superheat of steam.
Motor 51 can be three-phase synchronous motor, threephase asynchronous machine, variable-frequency motor, high slip motor, brushless, permanently electricity
Machine, switched reluctance machines.
Spray thrower 53 makes the indirect steam into compressor 52 disappear in the degree of superheat in the inlet spray desuperheating of compressor 52
Compression supercharging heating is carried out after removing again；The sensible heat and then vaporization for spraying into the desuperheating water absorption superheated steam of compressor 52 become saturation
Steam reduces steam superheat, reduces vapor (steam) temperature, and becomes high-pressure saturated steam discharge compressor 52, eliminates overheat
Steam heat-transfer effect after degree is more preferable.Since spray thrower 53 is in the inlet spray desuperheating of compressor 52, so more can guarantee steaming
Vapour is not in that the degree of superheat is too high in entire compression process, avoids cause thermal damage compression member, so as to extend compressor 52
Service life.
Preferably, steam compression system 5 further includes moisture detector 54, the humidity and feedback in 52 exit of detection compressor
Control the water spray of spray thrower 53.Moisture detector 54 is detected the water capacity of 52 outlet vapor of compressor, and passes through PLC
Switch board controls the desuperheating water feed flow (i.e. water spray) of spray thrower 53.Moisture detector 54 detects extra liquid water then table
Bright steam has reached dry saturation state, and the degree of superheat has completely eliminated.Due to moisture detector 54, need to detect a parameter (wet
Degree), so testing cost is low；Only it need to detect whether liquid water occur, required precision is low；Without calculating detection parameters,
Detection is more sensitive quick；Even if cause to spray into extra moisture, the excessive moisture due to 54 failure of moisture detector
It can be discharged by the drainage arrangement of 52 bottom of compressor, it is saturation state to ensure 52 outlet vapor of compressor, and makes compressor 52
Always it is in a safe condition.
Crystallizer 61 uses vertical separator, and its object is to the salting liquid that high-temperature and high concentration contracts is flashed and tied
Crystalline substance, and carry out vapour, liquid two-phase laminated flow.61 top of crystallizer is equipped with foam removal silk screen and baffle plate, secondary its object is to reduce
Entrainment with steam mist.Saltwater brine circulating pump 62 is pressurized dynamic to be provided for subsequent flowing for remaining saturation saltwater brine after crystallizing
Power.Forced-circulation evaporator 63 is used for the saltwater brine heat temperature raising to cycle, and the generation for indirect steam is supplied to enough thermal energy.
The purpose of steam jet pump 64 is the indirect steam discharged using high voltage power Steam Recovery crystallizer 61, and then generates pressure
The heat source stream of counter flow evaporator 63.
Forced-circulation evaporator 63 can be vertical or horizontal.The steam boosting ratio of steam jet pump 64 for 1.2~
2.5。
The ejecting port that the indirect steam that 61 top of crystallizer is discharged enters steam jet pump 64 inhales steam as volume, by remaining
The high steam that heat boiler 92 generates then inhales the indirect steam, and then the heat source pressed in generating steams as power steam to roll up
Vapour, heat source of this strand of heat source stream as mandatory circulating evaporator 63.
Thickener 81 settles the solid that the concentration in salt slurry suspends by gravity, forms high concentration salt slurry；Centrifuge
82 act on the moisture in removing high concentration salt slurry by high speed centrifugation, form wet salt.Drying bed 85 is used for the water in stripping wet salt
Point and impurity.When the mixed liquor accumulation being stored in mother liquor tank 83 is a certain amount of, flow back under the impetus of mother liquor pump 84
It continues cycling through to be heated into crystallizer 61 and divides water and crystallization.
Waste heat boiler 92 is mainly used for the high temperature for discharging gas engine 11 (400 DEG C -600 DEG C) flue gas
Heat is provided to purified water.Air preheater A2 is mainly used for medium temperature (120 DEG C -180 DEG C) cigarette discharged using waste heat boiler 92
Gas provides heat as heating of the heat source for cold air.Second preheater 22 is used for the high-temperature cooling water (80 for discharging engine
DEG C) as heat source give gas water provide heat.
Vacuum pump 32 is mainly used for the fixed gas discharge system that will be accumulated in degassing tank 31, and maintains the vacuum of system equipment
Degree.
Claims (10)
1. a kind of gas water evaporative crystallization processing unit with high salt, which is characterized in that including dynamical system (1), pre-heating system (2),
Degassing system (3), evaporative condenser system (4), steam compression system (5), evaporation and crystallization system (6), condensation water recovery and use system
It unites (7), crystallize salt making system (8), steam generating system (9) and residual neat recovering system (A)；
Dynamical system (1) includes gas engine (11), generator (12) and power supply and distribution mechanism (13)；Outer combustion gas and air
The flue gas of high temperature is burnt and generated into gas engine (11), and the flue gas of high temperature enters steam generating system (9)；Combustion gas is started
Machine (11) works and generator (12) is driven to generate electricity, and the electric current of generator (12) power generation is exported by power supply and distribution mechanism (13)；
Pre-heating system (2) includes the first preheater (21), the second preheater (22) and third preheater (23), and gas water is divided into two
Part simultaneously respectively enters the first preheater (21) and the second preheater (22) heating, then converges to third preheater (23) again simultaneously
Saturation state is heated in third preheater (23)；
Degassing system (3) includes degassing tank (31) and vacuum pump (32), by third preheater (23) heating after gas water into
Enter degassing tank (31) and flowed from above to below, while deviate from fixed gas in degassing tank (31), the fixed gas of abjection is in vacuum pump
(32) it is discharged under swabbing action；
Evaporative condenser system (4) includes concentrate circulating pump (41), falling film evaporator (42) and gas-liquid separator (43)；After degassing
Gas water enter concentrate circulating pump (41) and be pressurized and form concentrate, concentrate is divided into two parts, and a part of concentrate enters
Falling film evaporator (42), another part concentrate enter evaporation and crystallization system (6)；Concentrate into falling film evaporator (42)
Absorb heat and be evaporated to the evaporation liquid of gas-liquid two-phase；Evaporation liquid enters gas-liquid separator (43) and is separated into indirect steam and separation
Liquid, separating liquid are discharged from gas-liquid separator (43) and are increased importing the latter same concentrate circulating pump (41) that enters of the gas water after deaerating
Pressure, the indirect steam escape and enter steam compression system (5) from gas-liquid separator (43)；
Steam compression system (5) includes motor (51), compressor (52) and spray thrower (53)；Motor (51) and power supply and distribution mechanism
(13) be connected with receive power supply and distribution mechanism (13) output electric current and drive compressor (52) work；Gas-liquid separator (43) detaches
Go out indirect steam and enter the middle compression of compressor (52), compressed high steam enters falling film evaporator (42)；Spray thrower (53)
It is connected with condensation water recovery and use system (7) and is arranged on compressor (52) inlet, spray thrower (53) is for condensed water to be returned
It receives and is sprayed into compressor (52) using the purified water in system (7)；Into the high steam in falling film evaporator (42) to falling liquid film
Concentrate in evaporator (42) heats, and then condensed water flows into condensation water recovery and use system (7), remaining fixed gas
It carries some vapor and flows into third preheater (23) from falling film evaporator (42)；
Evaporation and crystallization system (6) is sprayed including crystallizer (61), saltwater brine circulating pump (62), forced-circulation evaporator (63) and steam
Penetrate pump (64)；Concentrate circulating pump (41) described another part concentrate after supercharged, which enters in forced-circulation evaporator (63), to be added
Heat, the concentrate after heating, which enters in crystallizer (61), to be flashed；The indirect steam formed after concentrate flash distillation flows into steam injection
It pumps (64)；The crystal salt that flash distillation generates deposits to crystallizer (61) bottom to form salt slurry, and salt slurry enters crystallization system by pipeline
Salt system (8)；It flashes remaining saturation saltwater brine and flows into saltwater brine circulating pump (62), and under the driving of saltwater brine circulating pump (62) again
Into forced-circulation evaporator (63)；Steam jet pump (64) injection heat source stream into forced-circulation evaporator (63), it is described
Heat source stream enters forced-circulation evaporator (63) heat release and condenses, and condensed water flows into condensation water recovery and use system (7),
Remaining fixed gas carries some vapor and flows into third preheater (23) from forced-circulation evaporator (63)；
What the fixed gas for carrying steam and forced-circulation evaporator (63) of falling film evaporator (42) discharge were discharged carries steam
Fixed gas enter third preheater (23) interior heat release, third preheater (23) interior gas water is heated to the saturation shape
State；The steam that fixed gas carries is condensed into water after heat release in third preheater (23) and flows into condensation water recovery and use system
(7), remaining fixed gas flows into degassing tank (31), and flows to impact in degassing tank (31) from bottom to top in degassing tank (31)
Gas water, so as to by the fixed gas stripping in gas water；All fixed gases in all degassing tanks (31) are in vacuum pump (32)
Swabbing action under discharge；
Condensation water recovery and use system (7) includes treated water tank (71) and clarified water pump (72)；Third preheater (23) condenses
The water that the water and forced-circulation evaporator (63) that water, the falling film evaporator (42) gone out is condensed out are condensed out flows into treated water tank
(71) using as the purified water；Clarified water pump (72) is connected with treated water tank (71) and purified water is sent into the first preheater
(21) and spray thrower (53), the purified water heat release of the first preheater (21) is flowed through to heat the gas field in the first preheater (21)
Purified water is sprayed into compressor (52) by water, spray thrower (53)；
It crystallizes salt making system (8) and includes thickener (81), centrifuge (82), mother liquor tank (83), mother liquor pump (84) and drying bed
(85)；The salt slurry that crystallizer (61) is formed sequentially enters thickener (81), centrifuge (82) and drying bed (85)；Salt slurry is in stiff
Sedimentation layering in device (81), the clear liquid on upper strata flow into mother liquor tank (83), and the high concentration salt slurry of lower floor enters centrifuge (82)；It is highly concentrated
It spends salt slurry and centrifugal dehydration and forms wet salt in centrifuge (82), the wet salt enters drying bed (85) and is dried to crude salt；Centrifugation
Dope that machine (82) is isolated flow into mother liquor tank (83) and with flow into mother liquor tank (83) and from the clear liquid of thickener (81) mix
Conjunction forms mixed liquor；Mother liquor pumps (84) and recrystallizes the mixed liquor feeding crystallizer (61) in mother liquor tank (83)；
Steam generating system (9) includes feed pump (91) and waste heat boiler (92)；Feed pump (91) connection treated water tank (71) and
Waste heat boiler (92), and the purified water in treated water tank (71) is sent into waste heat boiler (92)；Gas engine (11) discharge
The flue gas of high temperature flows through waste heat boiler (92) and heats the purified water in waste heat boiler (92), and generating high pressure after purified water heat absorption steams
Vapour, high steam enters steam jet pump (64), and is formed with entering after the indirect steam in steam jet pump (64) mixes
The heat source stream；
Residual neat recovering system (A) includes cooling circuit (A1) and air preheater (A2)；Cooling circuit (A1) connection combustion gas is started
Machine (11) and the second preheater (22), the heat of gas engine (11) and heat that the internal cooling water of cooling circuit (A1) absorbs
It exchanges to the gas water in the second preheater (22) to heat the gas water in the second preheater (22)；The flue gas of high temperature passes through remaining
Heat boiler (92) enters air preheater (A2) and heat release afterwards, and external cold air enters air preheater (A2) and after heat absorption
Into drying bed (85).
2. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that
Power supply and distribution mechanism (13) includes transformer, supply line, generator powered cabinet, load power distribution cabinet；
Gas engine (11) is miniature combustion engine, gas turbine or internal combustion engine；
The outer combustion gas natural gas, condensate gas, shale gas or the oil field gas self-produced for gas field.
3. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that the first preheater (21)
It is plate heat exchanger or shell-and-tube heat exchanger with the second preheater (22), third preheater (23) is shell-and-tube preheater.
4. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that degassing tank (31) can be with
For thermal type degassing tank, vacuum dust cather or blowing-type degassing tank.
5. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that
Falling film evaporator (42) is vertical tube falling evaporator, plate-type down-film evaporator or horizontal pipe falling film evaporator；
Gas-liquid separator (43) can be vertical gas-liquid separator, horizontal type gas and liquid separator, gas-liquid gravity separator or rotation
Wind formula gas-liquid separator.
6. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that gas-liquid separator (43)
It is internally provided with wire mesh demister and baffle plate.
7. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that steam compression system
(5) moisture detector (54) is further included, detects the humidity in compressor (52) exit and the water spray of feedback control spray thrower (53)
Amount.
8. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that compressor (52) can be with
For Roots Compressor, centrifugal compressor, wind turbine, screw compressor or reciprocating compressor.
9. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that steam jet pump (64)
Steam boosting ratio be 1.2~2.5.
10. gas water evaporative crystallization processing unit with high salt according to claim 1, which is characterized in that forced-circulation evaporation
Device (63) is vertical or horizontal.
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| CN201721624346.4U CN207566926U (en) | 2017-11-28 | 2017-11-28 | Gas water evaporative crystallization processing unit with high salt |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217795A (en) * | 2017-11-28 | 2018-06-29 | 中石化石油工程技术服务有限公司 | Gas water evaporative crystallization processing unit with high salt |
| CN114472474A (en) * | 2022-01-06 | 2022-05-13 | 山东绿满神州环境科技有限公司 | Industrial waste salt recycling treatment system and method |
-
2017
- 2017-11-28 CN CN201721624346.4U patent/CN207566926U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217795A (en) * | 2017-11-28 | 2018-06-29 | 中石化石油工程技术服务有限公司 | Gas water evaporative crystallization processing unit with high salt |
| CN114472474A (en) * | 2022-01-06 | 2022-05-13 | 山东绿满神州环境科技有限公司 | Industrial waste salt recycling treatment system and method |
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Address after: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: Sinopec Jianghan Petroleum Engineering Design Co., Ltd Address before: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: Sinopec energy conservation and Environmental Protection Engineering Technology Co., Ltd |