CN208711065U - A kind of evaporative crystallization heat-exchanger rig and heat-engine plant wet desulfurization wastewater Zero discharging system - Google Patents
A kind of evaporative crystallization heat-exchanger rig and heat-engine plant wet desulfurization wastewater Zero discharging system Download PDFInfo
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- CN208711065U CN208711065U CN201821222218.1U CN201821222218U CN208711065U CN 208711065 U CN208711065 U CN 208711065U CN 201821222218 U CN201821222218 U CN 201821222218U CN 208711065 U CN208711065 U CN 208711065U
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Abstract
The utility model discloses a kind of evaporative crystallization heat-exchanger rigs and heat-engine plant wet desulfurization wastewater Zero discharging system.Evaporative crystallization heat-exchanger rig includes shell, and being horizontally disposed in shell has multiple heat exchanger tubes, and the first scraper plate is vertically arranged in shell, multiple circular holes are offered on first scraper plate, heat exchanger tube passes through circular hole, and the outer diameter of heat exchanger tube is equal to the internal diameter of circular hole, and the first scraper plate can be moved left and right along heat exchanger tube.Heat-engine plant wet desulfurization wastewater Zero discharging system includes: former flue, absorption tower, crystallization tank, centrifugal separator and above-mentioned evaporative crystallization heat-exchanger rig；Adsorption tower smoke entrance is connected to former flue, and evaporative crystallization heat-exchanger rig is arranged on former flue, and the desulfurization wastewater outlet on absorption tower is connected to the waterwater entrance at the top of evaporative crystallization heat-exchanger rig, is former flue gas in heat exchanger tube, is desulfurization wastewater outside heat exchanger tube.Former fume afterheat is used for the circulating and evaporating crystallization treatment of desulfurization wastewater using evaporative crystallization heat-exchanger rig by the system, realizes desulfurization wastewater zero-emission.
Description
Technical field
The utility model belongs to heat-engine plant desulfurized systems technology field, more particularly, to a kind of evaporative crystallization heat-exchanger rig with
Heat-engine plant wet desulfurization wastewater Zero discharging system.
Background technique
Coal-burning power plant is used as with water, draining rich and influential family, has been realized the cascade utilization of full factory's water resource substantially at present, has been gone forward side by side one
Step implements the zero-emission of full factory's waste water.It is dense after chemical wastewater and recirculated water decrement treatment of the coal-burning power plant after cascade utilization
Water is further concentrated by evaporation generally as the technique moisturizing of Limestone-gypsum Wet Flue Gas Desulfurization Process system, therefore desulphurization system is discharged
Waste water become coal-burning power plant terminal waste water.Certain wastewater discharge is arranged in desulphurization system, is useless in order to control absorption tower
Reasonable chlorine ion concentration in water, to maintain the stable operation of desulphurization system.Desulfurization wastewater is high rigidity, high chloride ion, height
The high slat-containing wastewater of sulfate radical, high heavy metal has been unable to satisfy increasingly tight at present using three traditional header wastewater processing technologies
The environmental requirement of lattice.The extensive style discharging modes such as traditional coal yard sprinkling, grey field sprinkling, hydraulic discharged slag, in terms of national policy
Gradually prevented.
The zero-emission of domestic desulfurization wastewater has been to be concerned by more and more people in recent years.It is divided according to process route, desulfurization
Wastewater zero discharge is broadly divided into four technology schools: pretreatment-softening-concentration-solidification, pretreatment-softening-solidification, pretreatment-
Solidification, directly solidification etc..Angular divisions are utilized from heat source, desulfurization wastewater zero-emission is also broadly divided into four technology schools: empty pre-
Low-temperature flue gas after high-temperature flue gas, air preheater (including deduster inlet and outlet flue gas and desulphurization system inlet flue gas), boiler hot before device
Secondary Air, high standard steam etc..And a kind of processing that desulfurization wastewater is realized by UTILIZATION OF VESIDUAL HEAT IN how is established, and accomplish zero-emission
It puts, and the process route that operating system is stable, operating cost is cheap becomes urgent problem to be solved in industry.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of evaporative crystallization heat-exchanger rig and heat-engine plant wet desulfurization are useless
The fume afterheat of former flue gas and neat stress is used for the circulation of desulfurization wastewater using evaporative crystallization heat-exchanger rig by water zero discharge system
Evaporative crystallization processing, realizes the recycling of desulfurization wastewater zero-emission and flue gas condensing water；Process route is simple, operation and safeguard at
This is low, and can stable operation.
In order to achieve the above object, the utility model is resolved using following technical scheme.
A kind of evaporative crystallization heat-exchanger rig is used for wastewater treatment, including shell, is provided with waste water on the top plate of the shell
Entrance is provided with wastewater outlet on the bottom plate of the shell；Being horizontally disposed in the shell has multiple heat exchanger tubes, in the shell
It is vertically arranged with the first scraper plate, multiple circular holes are offered on first scraper plate, the heat exchanger tube passes through the circular hole, and described
The outer diameter of heat exchanger tube is equal to the internal diameter of the circular hole, and first scraper plate can be moved left and right along the heat exchanger tube.
Evaporative crystallization heat-exchanger rig according to the present utility model, is passed through high temperature heat transferring medium into heat exchanger tube, and waste water is from outer
Waterwater entrance on shell top plate enters in shell, replaces the heat of high temperature heat transferring medium to waste water by the tube wall of heat exchanger tube,
Waste water heating evaporative crystallization, crystal are adhered to the outer surface of tube wall of heat exchanger tube.The first scraper plate being vertically arranged offers multiple
Circular hole, heat exchanger tube passes through circular hole, and the outer diameter of heat exchanger tube is equal to the internal diameter of circular hole, and the first scraper plate can be moved left and right along heat exchanger tube,
The crystal on tube wall can be made all to be wiped off by the first moving left and right for scraper plate, fallen on the bottom plate of shell, it is useless after concentration
Water and crystal are reprocessed from the wastewater outlet outflow on shell bottom plate, realize the evaporative crystallization of waste water.
In addition, evaporative crystallization heat-exchanger rig provided by the utility model can also have following additional technical feature:
Preferably, it is provided on the bottom plate of the shell and connects liquid bath, described connect is vertically arranged with the second scraper plate in liquid bath, institute
Stating the second scraper plate, to protrude into described one end connect in liquid bath identical as the shape of the sectional elevation for connecing liquid bath, and described second scrapes
Plate can be moved forward and backward along the liquid bath that connects.
Evaporative crystallization heat-exchanger rig according to the present utility model, the waste water after the crystal wiped off and concentration fall into shell bottom
Connecing in liquid bath on plate, and by making all crystals and waste water by the second scraper plate along the second scraper plate for connecing liquid bath back-and-forth motion
It is pushed into connect the front end of liquid bath, convenient for collecting crystal and concentration waste water.
Preferably, the liquid bath that connects is zigzag, and fluted, institute is arranged along the longitudinal direction on the inner sidewall for connecing liquid bath
It states and is respectively arranged with boss at left and right sides of the second scraper plate, the boss matches with the groove.
Evaporative crystallization heat-exchanger rig according to the present utility model connects liquid bath as zigzag and connects liquid convenient for assembling crystal
Be arranged along the longitudinal direction fluted on the inner sidewall of slot, be respectively arranged with boss at left and right sides of the second scraper plate, boss with it is described
Groove matches, and makes the second scraper plate and connects liquid bath clamping, and enables the boss of the second scraper plate fortune before and after the groove for connecing liquid bath
It is dynamic.
Preferably, first scraper plate and second scraper plate are connected separately with transmission device.
Evaporative crystallization heat-exchanger rig according to the present utility model, the first scraper plate and the second scraper plate are connected separately with transmission dress
It sets, the movement for the first scraper plate and the second scraper plate provides power.
Preferably, multiple interconnected water clock pipes, the water clock pipe are provided in the same level in the shell
It is connected to by water inlet main pipe with the water inlet of the top plate of the shell, the water clock pipe is fixed on the shell by support rod
On top plate, the water clock pipe is arranged between the heat exchanger tube of the top and the top plate of the shell, the court of each water clock pipe
Row's water clock hole is offered on the side wall of underface.
Evaporative crystallization heat-exchanger rig according to the present utility model, waste water are set to same level by water inlet main pipe inflow
On multiple interconnected water clock pipes, and row's water clock hole water clock by being opened up on the side wall towards underface of water clock pipe
In the outer surface of multiple heat exchanger tubes, increase the heat exchange area of waste water and heat exchanger tube, extend heat-exchange time, improves heat exchange efficiency；Drop
Fistulae is fixed on the top plate of the shell by support rod, guarantees the stability of water clock pipe, and the top is arranged in water clock pipe
Between heat exchanger tube and the top plate of shell, guarantee that each heat exchanger tube exchanges heat with waste water in water clock pipe, keeps heat exchange efficiency maximum
Change.
Preferably, steam outlet is additionally provided on the top plate of the shell.
Evaporative crystallization heat-exchanger rig according to the present utility model is provided with steam outlet on the top plate of shell, makes to exchange heat
The water vapour evaporated in the process is flowed out from steam outlet, is entered condensation reflux unit using water vapour recovery tube and is recycled
It utilizes.
Preferably, the heat exchanger tube is quartz ampoule.
Preferably, first scraper plate and second scraper plate are respectively resistant material.
Evaporative crystallization heat-exchanger rig according to the present utility model, heat exchanger tube are quartz ampoule, the first scraper plate and the second scraper plate point
Not Wei resistant material, each component is corrosion-resistant material in guarantee system, extends system and operates normally the service life.
A kind of heat-engine plant wet desulfurization wastewater Zero discharging system, comprising: former flue, absorption tower, crystallization tank, centrifugal separator
With above-mentioned evaporative crystallization heat-exchanger rig；The smoke inlet on the absorption tower is connected to the former flue, evaporative crystallization heat-exchanger rig
On the former flue, the desulfurization wastewater outlet on the absorption tower passes through waste water delivery pipe and evaporative crystallization heat-exchanger rig for setting
The waterwater entrance at top is connected to, and is former flue gas, the heat exchange of evaporative crystallization heat-exchanger rig in the heat exchanger tube of evaporative crystallization heat-exchanger rig
Outer pipe is desulfurization wastewater；The waterwater entrance at the top of the wastewater outlet of the bottom of evaporative crystallization heat-exchanger rig and the crystallization tank connects
Logical, the supernatant outlet of the crystallization tank is connected to by return pipe with the waterwater entrance at the top of evaporative crystallization heat-exchanger rig, institute
State crystallization tank sediment outlet is connected to the injection port of the centrifugal separator, the liquid outlet of the centrifugal separator with it is described
Return pipe connection.
The bottom of evaporative crystallization heat-exchanger rig, which is provided with, connects liquid bath, and described connect is provided with the second scraper plate in liquid bath, and described
It is identical as the shape of the sectional elevation for connecing liquid bath that two scraper plates protrude into described one end connect in liquid bath, and second scraper plate can
Liquid bath back-and-forth motion is connect described in.
Heat-engine plant wet desulfurization wastewater Zero discharging system according to the present utility model, former flue gas enters to be arranged on former flue
In heat exchanger tube in evaporative crystallization heat-exchanger rig, the desulfurization wastewater of oil removal is gone to pass through from the outlet of the desulfurization wastewater on absorption tower useless
Water delivery pipe enters in evaporative crystallization heat-exchanger rig from the waterwater entrance at the top of evaporative crystallization heat-exchanger rig, and former flue gas sets heat
Desulfurization wastewater, desulfurization wastewater evaporative crystallization are given, crystal and concentration desulfurization wastewater pass through evaporative crystallization heat-exchanger rig bottom
Wastewater outlet enters crystallization tank, and former flue-gas temperature enters absorption tower from the smoke inlet on absorption tower after reducing and realizes SO2Removing.
After crystal in crystallization tank and concentration desulfurization wastewater staticly settle, the supernatant of the desulfurization wastewater of concentration from crystallization tank
Liquid exports the top that evaporative crystallization heat-exchanger rig is returned to by return pipe, the mistake that the condensing crystallizing-before repeating is scraped-collected
Journey；The sediment for crystallizing trench bottom enters centrifugation point from the injection port that the outlet of the sediment of crystallization tank flows out through centrifugal separator
It disembarks, after centrifuge separation, centrifugation gained liquid is flowed out from the liquid outlet of centrifugal separator imports return pipe, same to desulfurization wastewater
The process that condensing crystallizing-is scraped-collected is repeated together, and centrifugation obtained solid is crystalline salt product.
Heat-engine plant wet desulfurization wastewater Zero discharging system provided by the utility model, based on the evaporation knot being arranged in the system
Brilliant heat-exchanger rig follows desulfurization wastewater using the waste heat of former flue gas for the recycling of the high slat-containing wastewater after desulfurization
The processing of ring evaporative crystallization, realizes desulfurization wastewater zero-emission.Whole system process route is simple, and operation is low with the cost of overhaul, and
It can stable operation.
In addition, heat-engine plant wet desulfurization wastewater Zero discharging system provided by the utility model can also have following additional skill
Art feature:
Preferably, the exhanst gas outlet on the absorption tower is communicated with net flue, is provided with evaporative crystallization on the net flue and changes
Thermal, the waterwater entrance at the top of evaporative crystallization heat-exchanger rig are connected to the waste water delivery pipe, evaporative crystallization heat-exchanger rig
The wastewater outlet of bottom be connected to the waterwater entrance at the top for the evaporative crystallization heat-exchanger rig being arranged on former flue, evaporation knot
It is neat stress in the heat exchanger tube of brilliant heat-exchanger rig, is desulfurization wastewater outside the heat exchanger tube of evaporative crystallization heat-exchanger rig, evaporative crystallization changes
The exhanst gas outlet of thermal is connected with chimney, between the exhanst gas outlet of evaporative crystallization heat-exchanger rig and the smoke inlet of the chimney
Condensate drain outlet is provided on net flue.
Heat-engine plant wet desulfurization wastewater Zero discharging system according to the present utility model passes through by the flue gas that absorption tower is handled
The exhanst gas outlet on absorption tower enters the evaporative crystallization heat-exchanger rig being set on net flue, the desulfurization wastewater in waste water delivery pipe from
The waterwater entrance at the top of evaporative crystallization heat-exchanger rig being set on net flue enters evaporative crystallization heat-exchanger rig, and neat stress is changing
Flowing, desulfurization wastewater flow outside heat exchanger tube in heat pipe；After pipe wall of heat exchange pipe carries out heat displacement, it is saturated neat stress temperature
There is reduction, condensed water is precipitated after neat stress heat exchange, is fallen into net flue after carrying out heat exchanger tube with neat stress stream, finally from net cigarette
Condensate drain outlet outflow on road, is recycled, the saturation neat stress after cooling is discharged by chimney.Heat displacement
Afterwards, desulfurization wastewater temperature increases, and realizes and enters back into the evaporative crystallization heat-exchanger rig that is set on former flue after preliminary preheating into one
Step heat exchange.This process realizes the preliminary preheating of desulfurization wastewater, improves the evaporated crystallization device being set on former flue indirectly
Heat exchange efficiency；And temperature reduces the condensed water that not only can be recycled in part of smoke after neat stress heat exchange, while reducing net
Fine drop content in flue gas disappears for flue gas and white provides feasible scheme.
Preferably, it is provided with primary wastewater pump in the waste water delivery pipe, the evaporative crystallization heat exchange on net flue is set
Secondary waste water is provided between the wastewater outlet of device and the waterwater entrance for the evaporative crystallization heat-exchanger rig being arranged on former flue
Pump.
It is useless to be provided with level-one in waste water delivery pipe for heat-engine plant wet desulfurization wastewater Zero discharging system according to the present utility model
Water pump enters desulfurization wastewater from absorption tower and carries out heat exchange crystallization in evaporated crystallization device.It is arranged on net flue
The wastewater outlet of evaporative crystallization heat-exchanger rig and the waterwater entrance for the evaporative crystallization heat-exchanger rig being arranged on former flue between
It is provided with secondary waste water pump, a small amount of precipitate of evaporative crystallization heat-exchanger rig bottom for making desulfurization wastewater and being arranged on net flue
It all sucks in the evaporative crystallization heat-exchanger rig being arranged on former flue and carries out further evaporative crystallization processing, two waste water pumps
The Matter Transfer of guarantee system is gone on smoothly.
Preferably, circulating pump is provided on the return pipe.
Heat-engine plant wet desulfurization wastewater Zero discharging system according to the present utility model is provided with circulating pump on return pipe, makes
The top that desulfurization wastewater after condensing crystallizing turns again to evaporative crystallization heat-exchanger rig carries out circulating and evaporating crystallization process.
Preferably, air-introduced machine is provided in the former flue.
Heat-engine plant wet desulfurization wastewater Zero discharging system according to the present utility model is provided with air-introduced machine in former flue, makes
Former flue gas is flowed with certain flow rate, and the flowing for former flue gas provides power.
Preferably, the primary wastewater pump, secondary waste water pump and circulating pump are respectively resistant material.
Heat-engine plant wet desulfurization wastewater Zero discharging system according to the present utility model, primary wastewater pump, secondary waste water pump and
Circulating pump is respectively resistant material, and each component is corrosion-resistant material in guarantee system, extends the normal service life of system.
Preferably, the crystallization tank is transparent organic glass.
Heat-engine plant wet desulfurization wastewater Zero discharging system according to the present utility model, crystallization tank are transparent organic glass material
Matter, convenient for the crystalline deposit situation in external observation crystallization tank.
Detailed description of the invention
The utility model is described in further details in the following with reference to the drawings and specific embodiments.
Fig. 1 is a kind of a kind of schematic perspective view of embodiment of evaporative crystallization heat-exchanger rig of the utility model.
Fig. 2 is a kind of schematic perspective view of another embodiment of evaporative crystallization heat-exchanger rig of the utility model.
Fig. 3 is the partial enlarged view of A in Fig. 2.
Fig. 4 is that the connection structure of water clock pipe and sheath top plate is illustrated in a kind of evaporative crystallization heat-exchanger rig of the utility model
Figure.
Fig. 5 is the partial enlarged view of B in Fig. 4.
Fig. 6 is that a kind of a kind of structure of embodiment of heat-engine plant wet desulfurization wastewater Zero discharging system of the utility model is shown
It is intended to.
In the above figure: 1, former flue；2, net flue；3, evaporative crystallization heat-exchanger rig；301, shell；302, heat exchanger tube；
303, the first scraper plate；304, circular hole；305, liquid bath is connect；3051, groove；306, the second scraper plate；3061, boss；307, water clock pipe；
3071, support rod；3072, water clock hole；3073, water inlet main pipe；4, steam outlet；5, absorption tower；6, chimney；7, waste water conveys
Pipe；8, crystallization tank；9, centrifugal separator；10, return pipe；11, primary wastewater pumps；12, secondary waste water pumps；13, circulating pump；14,
Air-introduced machine；15, condensate drain outlet.
Specific embodiment
With reference to Fig. 1, the evaporative crystallization heat-exchanger rig of the utility model is used for wastewater treatment, including shell 301, shell 301
Top plate on be provided with waterwater entrance, be provided with wastewater outlet on the bottom plate of shell 301；In shell 301 be horizontally disposed with have it is multiple
Heat exchanger tube 302 is vertically arranged with the first scraper plate 303 in shell 301, multiple circular holes 304 is offered on the first scraper plate 303, exchanges heat
Pipe 302 passes through circular hole 304, and the outer diameter of heat exchanger tube 302 is equal to the internal diameter of circular hole 304, and the first scraper plate 303 can be along heat exchanger tube 302
It moves left and right.
In the embodiment above, it is passed through high temperature heat transferring medium into heat exchanger tube 302, waste water is from useless on 301 top plate of shell
Water inlet enters in shell 301, replaces the heat of high temperature heat transferring medium to waste water, waste water liter by the tube wall of heat exchanger tube 302
Warm evaporative crystallization, crystal are adhered to the outer surface of tube wall of heat exchanger tube 302.The first scraper plate 303 being vertically arranged offers multiple
Circular hole 304, heat exchanger tube 302 passes through circular hole 304, and the outer diameter of heat exchanger tube 302 is equal to the internal diameter of circular hole 304, and the first scraper plate 303 can
It is moved left and right along heat exchanger tube 302, all the moving left and right and wipe off by the first scraper plate 303 of the crystal on tube wall can be made, fallen on
On the bottom plate of shell 301, waste water and crystal after concentration are reprocessed from the wastewater outlet outflow on 301 bottom plate of shell,
Realize the evaporative crystallization of waste water.
In addition, evaporative crystallization heat-exchanger rig provided by the utility model, can also have following additional embodiment:
With reference to Fig. 2, one embodiment according to the present utility model is provided on the bottom plate of shell 301 and connects liquid bath 305, connects
The second scraper plate 306 is vertically arranged in liquid bath 305, the second scraper plate 306, which protrudes into, to be connect one end in liquid bath 305 and connect liquid bath 305
The shape of sectional elevation is identical, and the second scraper plate 306 can be moved forward and backward along liquid bath 305 is connect.
In the embodiment above, the waste water after the crystal wiped off and concentration falls on 301 bottom plate of shell and connects liquid bath 305
It is interior, and by being pushed into all crystals and waste water by the second scraper plate 306 along the second scraper plate 306 for connecing the back-and-forth motion of liquid bath 305
The front end of liquid bath 305 is connect, convenient for collecting crystal and concentration desulfurization wastewater.
Referring to figs. 2 and 3, one embodiment according to the present utility model, connecing liquid bath 305 is zigzag, connects liquid bath 305
It is arranged along the longitudinal direction fluted on inner sidewall, the left and right sides of the second scraper plate 306 is respectively arranged with boss 3061, boss 3061
Match with groove.
In the embodiment above, connecing liquid bath 305 is zigzag, convenient for assembling crystal, on the inner sidewall that connects liquid bath 305
It is arranged along the longitudinal direction fluted, the left and right sides of the second scraper plate 306 is respectively arranged with boss 3061, boss 3061 and groove phase
Matching makes the second scraper plate 306 and connects the clamping of liquid bath 305, and enables the boss 3061 of the second scraper plate 306 along connecing liquid bath 305
Groove moves forward and backward.
With reference to Fig. 2, one embodiment according to the present utility model, the first scraper plate 303 and the second scraper plate 306 are connected separately with
Transmission device.
In the embodiment above, the first scraper plate 303 and the second scraper plate 306 are connected separately with transmission device, are the first scraper plate
303 and second scraper plate 306 movement provide power.
With reference to Fig. 1-Fig. 5, one embodiment according to the present utility model is provided in same level in shell 301
Multiple interconnected water clock pipes 307, water clock pipe 307 are connected to by main pipe 3073 of intaking with the water inlet of the top plate of shell 301,
Water clock pipe 307 is fixed on the top plate of shell 301 by support rod 3071, and the heat exchanger tube 302 of the top is arranged in water clock pipe 307
Between the top plate of shell 301, row's water clock hole 3072 is offered on the side wall towards underface of each water clock pipe 307.
In the embodiment above, waste water flows into the multiple phases being set in same level interconnection by water inlet main pipe 3073
Logical water clock pipe 307, and 3072 water clock of row's water clock hole opened up on the side wall towards underface for passing through water clock pipe 307 is in more
The outer surface of a heat exchanger tube 302 increases the heat exchange area of waste water and heat exchanger tube 302, extends heat-exchange time, improves heat exchange efficiency；
Water clock pipe 307 is fixed on the top plate of shell 301 by support rod 3071, guarantees the stability of water clock pipe 307, water clock pipe 307
It is arranged between the heat exchanger tube 302 of the top and the top plate of shell 301, guarantees that each heat exchanger tube 302 gives up in water clock pipe 307
Water exchanges heat, and makes maximum heat exchange efficiency.
With reference to Fig. 6, one embodiment according to the present utility model is additionally provided with steam outlet on the top plate of shell 301
4。
In the embodiment above, it is provided with steam outlet 4 on the top plate of shell 301, makes the water evaporated in heat transfer process
Steam is flowed out from steam outlet 4, is entered condensation reflux unit using water vapour recovery tube and is recycled.
With reference to Fig. 1 and Fig. 2, one embodiment according to the present utility model, heat exchanger tube 302 is quartz ampoule.
With reference to Fig. 1 and Fig. 2, one embodiment according to the present utility model, the first scraper plate 303 and the second scraper plate 306 are distinguished
For resistant material.
In the embodiment above, heat exchanger tube 302 is quartz ampoule, and the first scraper plate 303 and the second scraper plate 306 are respectively corrosion-resistant
Material, each component is corrosion-resistant material in guarantee system, extends system and operates normally the service life.
With reference to Fig. 6, the heat-engine plant wet desulfurization wastewater Zero discharging system of the utility model, comprising: former flue 1, absorption tower
5, crystallization tank 8, centrifugal separator 9 and above-mentioned evaporative crystallization heat-exchanger rig 3；The smoke inlet on absorption tower 5 is connected to former flue 1,
Evaporative crystallization heat-exchanger rig 3 is arranged on former flue 1, and the desulfurization wastewater outlet on absorption tower 5 is tied by waste water delivery pipe 7 and evaporation
The waterwater entrance at the top of brilliant heat-exchanger rig 3 is connected to, and is former flue gas in the heat exchanger tube 302 of evaporative crystallization heat-exchanger rig 3, evaporation knot
It is desulfurization wastewater outside the heat exchanger tube 302 of brilliant heat-exchanger rig 3；The wastewater outlet and crystallization tank 8 of the bottom of evaporative crystallization heat-exchanger rig 3
Top waterwater entrance connection, the supernatant outlet of crystallization tank 8 passes through the top of return pipe 10 and evaporative crystallization heat-exchanger rig 3
Waterwater entrance connection, crystallization tank 8 sediment outlet is connected to the injection port of centrifugal separator 9, centrifugal separator 9 out liquid
Mouth is connected to return pipe 10.
The bottom of evaporative crystallization heat-exchanger rig 3, which is provided with, connects liquid bath 305, connects and is provided with the second scraper plate 306 in liquid bath 305,
Second scraper plate 306 protrudes into that connect one end in liquid bath 305 identical as the shape for the sectional elevation for connecing liquid bath 305, and the second scraper plate 306
It can be moved forward and backward along liquid bath 305 is connect.
In the embodiment above, former flue gas enters the heat exchanger tube in the evaporative crystallization heat-exchanger rig 3 being arranged on former flue 1
In 302, goes the desulfurization wastewater of oil removal to export from the desulfurization wastewater on absorption tower 5 and changed by waste water delivery pipe 7 from evaporative crystallization
The waterwater entrance at 3 top of thermal enters in evaporative crystallization heat-exchanger rig 3, and former flue gas replaces heat to desulfurization wastewater, desulfurization
Waste water evaporative crystallization, crystal and concentration desulfurization wastewater enter crystallization by the wastewater outlet of 3 bottom of evaporative crystallization heat-exchanger rig
Slot 8, former flue-gas temperature enter absorption tower 5 from the smoke inlet on absorption tower 5 after reducing and further realize SO2Removing.
After crystal in crystallization tank 8 and concentration desulfurization wastewater staticly settle, the desulfurization wastewater of concentration is from the upper of crystallization tank 8
Purified liquor outlet returns to the top of evaporative crystallization heat-exchanger rig 3 by return pipe 10, and the condensing crystallizing-before repeating is scraped-collected
Process；The sediment of 8 bottom of crystallization tank from the outlet of the sediment of crystallization tank 8 flow out through the injection port of centrifugal separator 9 into
Enter centrifugal separator 9, after centrifuge separation, centrifugation gained liquid is flowed out from the liquid outlet of centrifugal separator 9 imports return pipe
10, repeat the process that condensing crystallizing-is scraped-collected together with desulfurization wastewater, centrifugation obtained solid is crystalline salt product.
Heat-engine plant wet desulfurization wastewater Zero discharging system provided by the utility model, based on the evaporation knot being arranged in the system
Brilliant heat-exchanger rig 3 follows desulfurization wastewater using the waste heat of former flue gas for the recycling of the high slat-containing wastewater after desulfurization
The processing of ring evaporative crystallization, realizes desulfurization wastewater zero-emission.Whole system process route is simple, and transformation is low with operating cost, and
It can stable operation.
In addition, heat-engine plant wet desulfurization wastewater Zero discharging system provided by the utility model can also have following additional skill
Art feature:
With reference to Fig. 6, one embodiment according to the present utility model, the exhanst gas outlet on absorption tower 5 is communicated with net flue 2, only
Evaporative crystallization heat-exchanger rig 3, the waterwater entrance and waste water delivery pipe 7 at the top of evaporative crystallization heat-exchanger rig 3 are provided on flue 2
Connection, the wastewater outlet of the bottom of evaporative crystallization heat-exchanger rig 3 and the evaporative crystallization heat-exchanger rig 3 being arranged on former flue 1
The waterwater entrance at top is connected to, and is neat stress in the heat exchanger tube 302 of evaporative crystallization heat-exchanger rig 3, evaporative crystallization heat-exchanger rig 3
It is desulfurization wastewater outside heat exchanger tube 302, the exhanst gas outlet of evaporative crystallization heat-exchanger rig 3 is connected with chimney 6, evaporative crystallization heat-exchanger rig
Condensate drain outlet 15 is provided on net flue 2 between 3 exhanst gas outlet and the smoke inlet of chimney 6.
In the embodiment above, the flue gas handled by absorption tower 5 is entered by the exhanst gas outlet on absorption tower 5 to be set to only
Evaporative crystallization heat-exchanger rig 3 on flue 2, desulfurization wastewater in waste water delivery pipe 7 is from the evaporative crystallization being set on net flue 2
The waterwater entrance at 3 top of heat-exchanger rig enters evaporative crystallization heat-exchanger rig 3, and neat stress flows in heat exchanger tube 302, desulfurization wastewater
It is flowed outside heat exchanger tube 302；After 302 tube wall of heat exchanger tube carries out heat displacement, saturation neat stress temperature has reduction, neat stress
Condensed water is precipitated after heat exchange, is fallen into net flue 2 after carrying out heat exchanger tube 302 with neat stress stream, finally from cold on net flue 2
Condensate discharge outlet 15 flows out, and is recycled, and the saturation neat stress after cooling is discharged by chimney 6.After heat displacement, desulfurization
Waste water temperature increases, and realizes that entering back into the evaporative crystallization heat-exchanger rig 3 being set on former flue 1 after tentatively preheating further changes
Heat.This process realizes the preliminary preheating of desulfurization wastewater, improves changing for the evaporated crystallization device being set on former flue 1 indirectly
The thermal efficiency；And temperature reduces the condensed water that not only can be recycled in part of smoke after neat stress heat exchange, while reducing neat stress
In fine drop content, disappear for flue gas and white provide feasible scheme.
With reference to Fig. 6, one embodiment according to the present utility model is provided with primary wastewater pump 11 in waste water delivery pipe 7, if
The evaporative crystallization heat-exchanger rig setting wastewater outlet in the evaporative crystallization heat-exchanger rig 3 on net flue 2 and being arranged on former flue 1
Secondary waste water pump 12 is provided between 3 waterwater entrance.
In the embodiment above, be provided in waste water delivery pipe 7 primary wastewater pump 11, make desulfurization wastewater from absorption tower 5 into
Enter and carries out heat exchange crystallization in evaporated crystallization device.The waste water of evaporative crystallization heat-exchanger rig 3 on net flue 2 is set
It exports and is provided with secondary waste water pump 12 between the waterwater entrance of evaporative crystallization heat-exchanger rig 3 that is arranged on former flue 1, make to take off
All sucking is arranged in former cigarette for sulphur waste water and a small amount of precipitate for 3 bottom of evaporative crystallization heat-exchanger rig being arranged on net flue 2
Further evaporative crystallization processing is carried out in evaporative crystallization heat-exchanger rig 3 on road 1, two waste water pumps guarantee that the material of system follows
Ring is gone on smoothly.
With reference to Fig. 6, one embodiment according to the present utility model is provided with circulating pump 13 on return pipe 10.
In the embodiment above, it is provided with circulating pump 13 on return pipe 10, the desulfurization wastewater after making condensing crystallizing returns again
Circulating and evaporating crystallization process is carried out to the top of evaporative crystallization heat-exchanger rig 3.
With reference to Fig. 6, one embodiment according to the present utility model is provided with air-introduced machine 14 in former flue 1.
In the embodiment above, it is provided with air-introduced machine 14 in former flue 1, flows former flue gas with certain flow rate, for former cigarette
The flowing of gas provides power.
With reference to Fig. 6, one embodiment according to the present utility model, primary wastewater pump 11, secondary waste water pump 12 and circulating pump
13 be respectively resistant material.
In the embodiment above, primary wastewater pump 11, secondary waste water pump 12 and circulating pump 13 are respectively resistant material, are protected
Each component is corrosion-resistant material in card system, extends the normal service life of system.
With reference to Fig. 6, one embodiment according to the present utility model, crystallization tank 8 is transparent organic glass.
In the embodiment above, crystallization tank 8 is transparent organic glass material, convenient for the crystallization in external observation crystallization tank 8
Precipitation status.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modification and variations of the utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (10)
1. a kind of evaporative crystallization heat-exchanger rig is used for wastewater treatment, which is characterized in that including shell (301), the shell
(301) it is provided with waterwater entrance on top plate, is provided with wastewater outlet on the bottom plate of the shell (301)；The shell (301)
Interior be horizontally disposed with has multiple heat exchanger tubes (302), is vertically arranged with the first scraper plate (303) in the shell (301), described first scrapes
It is offered on plate (303) multiple circular holes (304), the heat exchanger tube (302) passes through the circular hole (304), and the heat exchanger tube
(302) outer diameter is equal to the internal diameter of the circular hole (304), and first scraper plate (303) can move along the heat exchanger tube (302) left and right
It is dynamic.
2. evaporative crystallization heat-exchanger rig according to claim 1, which is characterized in that set on the bottom plate of the shell (301)
It is equipped with and connects liquid bath (305), described connect in liquid bath (305) is vertically arranged with the second scraper plate (306), and second scraper plate (306) is stretched
It is identical as the shape of sectional elevation for connecing liquid bath (305) to enter described one end connect in liquid bath (305), and second scraper plate
(306) it can be moved forward and backward along described connect liquid bath (305).
3. evaporative crystallization heat-exchanger rig according to claim 2, which is characterized in that described connect liquid bath (305) are zigzag,
It is arranged along the longitudinal direction on the inner sidewall for connecing liquid bath (305) fluted (3051), the left and right two of second scraper plate (306)
Side is respectively arranged with boss (3061), and the boss (3061) matches with the groove (3051).
4. evaporative crystallization heat-exchanger rig according to claim 2, which is characterized in that first scraper plate (303) and described
Second scraper plate (306) is connected separately with transmission device.
5. evaporative crystallization heat-exchanger rig according to claim 1, which is characterized in that the same water in the shell (301)
Be provided with multiple interconnected water clock pipes (307) in plane, the water clock pipe (307) by water inlet main pipe (3073) with it is described
The water inlet of the top plate of shell (301) is connected to, and the water clock pipe (307) is fixed on the shell by support rod (3071)
(301) on top plate, the water clock pipe (307) be arranged in the top heat exchanger tube (302) and the shell (301) top plate it
Between, row's water clock hole (3072) is offered on the side wall towards underface of each water clock pipe (307).
6. evaporative crystallization heat-exchanger rig according to claim 1, which is characterized in that on the top plate of the shell (301) also
It is provided with steam outlet (4).
7. a kind of heat-engine plant wet desulfurization wastewater Zero discharging system characterized by comprising former flue (1), absorption tower (5), knot
Brilliant slot (8), centrifugal separator (9) and evaporative crystallization heat-exchanger rig described in claim 1 (3)；The flue gas of the absorption tower (5)
Entrance is connected to the former flue (1), and evaporative crystallization heat-exchanger rig (3) setting is on the former flue (1), the absorption tower
(5) desulfurization wastewater outlet is connected to by waste water delivery pipe (7) with the waterwater entrance at the top of evaporative crystallization heat-exchanger rig (3),
It is former flue gas in the heat exchanger tube (302) of evaporative crystallization heat-exchanger rig (3), the heat exchanger tube (302) of evaporative crystallization heat-exchanger rig (3) is outside
For desulfurization wastewater；The waterwater entrance at the top of the wastewater outlet and crystallization tank (8) of the bottom of evaporative crystallization heat-exchanger rig (3)
Connection, the waste water that the supernatant outlet of the crystallization tank (8) passes through return pipe (10) and the top of evaporative crystallization heat-exchanger rig (3)
The sediment outlet of entrance connection, the crystallization tank (8) is connected to the injection port of the centrifugal separator (9), the centrifugation point
The liquid outlet of (9) of disembarking is connected to the return pipe (10)；
The bottom of evaporative crystallization heat-exchanger rig (3), which is provided with, to be connect liquid bath (305), and described connect is provided with second in liquid bath (305) and scrapes
Plate (306), second scraper plate (306) protrude into described one end connect in liquid bath (305) and connect cuing open vertically for liquid bath (305) with described
The shape in face is identical, and second scraper plate (306) can be moved forward and backward along described connect liquid bath (305).
8. heat-engine plant wet desulfurization wastewater Zero discharging system according to claim 7, which is characterized in that the absorption tower
(5) exhanst gas outlet is communicated with net flue (2), is provided with evaporative crystallization heat-exchanger rig (3) on the net flue (2), evaporation knot
The waterwater entrance at the top of brilliant heat-exchanger rig (3) is connected to the waste water delivery pipe (7), the bottom of evaporative crystallization heat-exchanger rig (3)
The wastewater outlet in portion is connected to the waterwater entrance at the top for the evaporative crystallization heat-exchanger rig (3) being arranged on former flue (1), is evaporated
Crystallizing in the heat exchanger tube (302) of heat-exchanger rig (3) is neat stress, and the heat exchanger tube (302) of evaporative crystallization heat-exchanger rig (3) is de- outside
Sulphur waste water, the exhanst gas outlet of evaporative crystallization heat-exchanger rig (3) are connected with chimney (6), and the flue gas of evaporative crystallization heat-exchanger rig (3) goes out
Condensate drain outlet (15) are provided on net flue (2) between mouth and the smoke inlet of the chimney (6).
9. heat-engine plant wet desulfurization wastewater Zero discharging system according to claim 8, which is characterized in that the waste water conveying
Primary wastewater pump (11) is provided on pipe (7), the wastewater outlet for the evaporative crystallization heat-exchanger rig (3) being arranged on net flue (2)
Secondary waste water pump (12) is provided with being arranged between the waterwater entrance of the evaporative crystallization heat-exchanger rig (3) on former flue (1).
10. heat-engine plant wet desulfurization wastewater Zero discharging system according to claim 7, which is characterized in that the return pipe
(10) circulating pump (13) are provided on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821222218.1U CN208711065U (en) | 2018-07-31 | 2018-07-31 | A kind of evaporative crystallization heat-exchanger rig and heat-engine plant wet desulfurization wastewater Zero discharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821222218.1U CN208711065U (en) | 2018-07-31 | 2018-07-31 | A kind of evaporative crystallization heat-exchanger rig and heat-engine plant wet desulfurization wastewater Zero discharging system |
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| Publication Number | Publication Date |
|---|---|
| CN208711065U true CN208711065U (en) | 2019-04-09 |
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ID=65975514
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821222218.1U Expired - Fee Related CN208711065U (en) | 2018-07-31 | 2018-07-31 | A kind of evaporative crystallization heat-exchanger rig and heat-engine plant wet desulfurization wastewater Zero discharging system |
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| Country | Link |
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| CN (1) | CN208711065U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744565A (en) * | 2018-07-31 | 2018-11-06 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of evaporative crystallization heat-exchanger rig and coal fired plant desulfurization wastewater Zero discharging system |
| CN114262111A (en) * | 2021-12-27 | 2022-04-01 | 北京华源泰盟节能设备有限公司 | Softened sewage treatment system of heat exchange station |
-
2018
- 2018-07-31 CN CN201821222218.1U patent/CN208711065U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744565A (en) * | 2018-07-31 | 2018-11-06 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of evaporative crystallization heat-exchanger rig and coal fired plant desulfurization wastewater Zero discharging system |
| CN108744565B (en) * | 2018-07-31 | 2023-07-14 | 中国大唐集团科学技术研究院有限公司西北分公司 | Evaporation crystallization heat exchange device and desulfurization wastewater zero discharge system of coal-fired plant |
| CN114262111A (en) * | 2021-12-27 | 2022-04-01 | 北京华源泰盟节能设备有限公司 | Softened sewage treatment system of heat exchange station |
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