CN110131702A - A kind of wet slag removing system pulp water cyclic utilization system and method - Google Patents
A kind of wet slag removing system pulp water cyclic utilization system and method Download PDFInfo
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- CN110131702A CN110131702A CN201910511940.XA CN201910511940A CN110131702A CN 110131702 A CN110131702 A CN 110131702A CN 201910511940 A CN201910511940 A CN 201910511940A CN 110131702 A CN110131702 A CN 110131702A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 143
- 239000002893 slag Substances 0.000 title claims abstract description 57
- 125000004122 cyclic group Chemical group 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 31
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 38
- 229910052799 carbon Inorganic materials 0.000 claims description 38
- 230000009919 sequestration Effects 0.000 claims description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 32
- 239000003546 flue gas Substances 0.000 claims description 32
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 28
- 239000002562 thickening agent Substances 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 22
- 239000003814 drug Substances 0.000 claims description 20
- 239000003517 fume Substances 0.000 claims description 19
- 230000003020 moisturizing effect Effects 0.000 claims description 17
- 230000003139 buffering effect Effects 0.000 claims description 15
- 239000000701 coagulant Substances 0.000 claims description 15
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 14
- 150000002505 iron Chemical class 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 5
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910001424 calcium ion Inorganic materials 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 230000003009 desulfurizing effect Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000872 buffer Substances 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000876443 Varanus salvator Species 0.000 description 1
- -1 buffering pond Substances 0.000 description 1
- FYHXNYLLNIKZMR-UHFFFAOYSA-N calcium;carbonic acid Chemical compound [Ca].OC(O)=O FYHXNYLLNIKZMR-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- HDFXRQJQZBPDLF-UHFFFAOYSA-L disodium hydrogen carbonate Chemical compound [Na+].[Na+].OC([O-])=O.OC([O-])=O HDFXRQJQZBPDLF-UHFFFAOYSA-L 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
- C02F5/06—Softening water by precipitation of the hardness using calcium compounds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/006—Arrangements of feedwater cleaning with a boiler
Abstract
The invention discloses a kind of wet slag removing system pulp water cyclic utilization system and methods, including slurry pond, scale removal reactor, First Heat Exchanger, boiler feedwater water source and boiler feed water system；The outlet in slurry pond is connected with the entrance of scale removal reactor, the outlet of scale removal reactor is connected with the heat release side entrance of First Heat Exchanger, the heat release side outlet of First Heat Exchanger is connected with slurry pond, the outlet at boiler feedwater water source is connected with the heat absorption side entrance of First Heat Exchanger, the heat absorption side outlet of First Heat Exchanger is connected with boiler feed water system, the system and method can be avoided the influence of pulp water fouling heat exchanging device, while realize the recycling of pulp water heat.
Description
Technical field
The invention belongs to field of waste water treatment, it is related to a kind of wet slag removing system pulp water cyclic utilization system and method.
Background technique
Currently, domestic wet slag removing system mostly uses dragveyer-slag storehouse slagging-off mode, typical pulp water utilization process
Process is " dragveyer pulp water → slag spilling water hole → thickener → buffering pond → dragveyer ", and northern area part power plant pulp water follows
Ring is " dragveyer pulp water → slag spilling water hole → dragveyer " using process flow；There are also wet slag removing systems to use " slag crusher → slag
Stock tank → slag drainage bin → buffering pond → slag crusher ".Which kind of pulp water circulation hydraulic art is either taken, at present major part power plant
There are problems that pulp water overflow to external environment or other systems, pulp water water quality is complicated, goes other waste water systems will affect other
The normal table of waste water treatment system is run, and is drained into other external environments outside pulp water and is caused environmental pollution.Part power plant has attempted to lead to
It crosses and increases heat exchanger in the pulp water circulatory system, take away slag system heat, realize heat balance, but there are in terms of following two
Problem, first is that pulp water is calcium carbonate supersaturation water quality, easy fouling, the positions fouling such as heat exchanger is serious, and heat exchanger heat exchange efficiency is tight
It reduces again, causes slag circulatory system heat that can not take away by heat exchanger, pulp water still has overflow；Second is that the cold source of current heat exchanger
Recirculated water is generally used, slag system heat waste is caused.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of wet slag removing system pulp water circulation benefit is provided
With system and method, which can be avoided the influence of pulp water fouling heat exchanging device, while realize returning for pulp water heat
It receives.
In order to achieve the above objectives, wet slag removing system pulp water cyclic utilization system of the present invention includes slurry pond, scale removal
Reactor, First Heat Exchanger, boiler feedwater water source and boiler feed water system；
The outlet in slurry pond is connected with the entrance of scale removal reactor, the outlet of scale removal reactor and putting for First Heat Exchanger
Hot side entrance is connected, and the heat release side outlet of First Heat Exchanger is connected with slurry pond, the outlet at boiler feedwater water source and the
The heat absorption side entrance of one heat exchanger is connected, and the heat absorption side outlet of First Heat Exchanger is connected with boiler feed water system.
It further include that dragveyer, high temperature resistant type iron salt coagulant medicine system, pulp water thickener, buffering pond, sodium carbonate add
Medicine system, moisturizing pipeline, carbon sequestration reactor, slag storehouse, purified gas fume conveying system and flue gas emission；
Moisturizing pipeline is connected with the entrance of dragveyer, and the outlet of dragveyer is connected with the entrance in slurry pond, slurry pond
Outlet and the outlet of high temperature resistant type iron salt coagulant medicine system be connected with the entrance of pulp water thickener, pulp water thickener
Water outlet is connected with the entrance in buffering pond, buffers the outlet in pond and the outlet of sodium carbonate medicine system and scale removal reactor
Entrance be connected, the outlet of scale removal reactor is connected with the entrance of carbon sequestration reactor, the outlet of carbon sequestration reactor and first
The heat release side entrance of heat exchanger is connected, and the heat release side outlet of First Heat Exchanger is connected with the entrance of dragveyer, purified
Gas fume conveying system is connected with the air inlet of carbon sequestration reactor, and the exhaust outlet of carbon sequestration reactor is connected with flue gas emission
It is logical；
The slag-drip opening of dragveyer and the slag-drip opening of pulp water thickener are connected with the entrance in slag storehouse.
It further include the pH value and carbon sequestration reactor and first for detecting purified gas fume conveying system exit flue gas
The pH of pH value monitors system in pipeline between heat exchanger.
Further include moisturizing pipeline, slag crusher, drainage bin, clear water reserviors, the second heat exchanger, purified gas fume conveying system and
Flue gas emission；
Moisturizing pipeline is connected with the entrance of slag crusher, and the outlet of slag crusher is through slurry pond, drainage bin, clear water reserviors and scale removal
Reactor is connected with the water inlet of the second heat exchanger, the heat release side entrance phase of the water outlet and First Heat Exchanger of the second heat exchanger
Connection, the heat release side outlet of First Heat Exchanger are connected with the entrance of slag crusher, and purified gas fume conveying system is changed with second
The air inlet of hot device is connected, and the gas outlet of the second heat exchanger is connected with flue gas emission.
It further include the pH value and First Heat Exchanger heat release side outlet for detecting First Heat Exchanger heat absorbing side inlet flue gas
The pH for locating the pH value of water monitors system.
It further include dragveyer and moisturizing pipeline；
The outlet of dragveyer is connected with the entrance in slurry pond, the heat release side outlet of First Heat Exchanger and the entrance of dragveyer
It is connected, moisturizing pipeline is connected with the entrance of dragveyer.
Wet slag removing system pulp water circulation utilization method of the present invention the following steps are included:
The fishing pulp water of dragveyer output enters in slurry pond, the fishing pulp water and high temperature resistant type molysite coagulation of the output of slurry pond
The high temperature resistant type iron salt coagulant of agent medicine system output enters in pulp water thickener, in pulp water thickener, fishes out in pulp water
Suspended matter and colloid solidified under the action of high temperature resistant type iron salt coagulant, with remove fishing pulp water in colloid and suspension
The clear water of object, the output of pulp water thickener enters in scale removal reactor after the buffering of buffering pond, passes through sodium carbonate medicine system
Sodium carbonate is added into scale removal reactor, so that the calcium ion in clear water is reacted with sodium carbonate, generates calcium carbonate, and be attached to crystalline substance
In kind, then it is discharged as desulfurizing agent；
The clear water of scale removal reactor output enters in carbon sequestration reactor, the flue gas of purified gas fume conveying system output
It is passed through in the clear water in carbon sequestration reactor, to reduce the basicity of clear water, wherein by controlling the cigarette being passed through into carbon sequestration reactor
Throughput, so that the pH value of carbon sequestration reactor discharge clear water is less than 8.0, the flue gas of carbon sequestration reactor discharge is through flue gas emission
It is discharged, the clear water of carbon sequestration reactor discharge enters in dragveyer after the cold side heat release of First Heat Exchanger；
The boiler replenishing water of boiler replenishing water water source output is sent into boiler feedwater system after the heat absorption of the heat absorbing side of First Heat Exchanger
In system；
The deslagging of dragveyer and pulp water thickener enters in slag storehouse.
The invention has the following advantages:
Wet slag removing system pulp water cyclic utilization system of the present invention and method first pass through pulp water when specific operation
Scale removal reactor carries out scale removal and avoids impacting follow-up equipment to reduce the calcium ion in pulp water, the output of scale removal reactor
Water enter and carry out heat release in First Heat Exchanger, be then fed into slurry pond, the boiler supply of boiler feedwater water source output
Water is sent into boiler feed water system after First Heat Exchanger absorbs heat, and to realize the heat recovery of pulp water, while improving boiler benefit
The water efficiency processed of water supply system, structure is simple, easy to operate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the structural schematic diagram of embodiment two；
Fig. 3 is the structural schematic diagram of embodiment three.
Wherein, 1 it is dragveyer, 2 be slag storehouse, 3 be slurry pond, 4 be pulp water thickener, 5 be buffering pond, 6 is that scale removal is anti-
Answer device, 7 be carbon sequestration reactor, 8 be purified gas fume conveying system, 9 be flue gas emission, 10 be pH monitoring system, 11
It is boiler feed water system for First Heat Exchanger, 12,13 be slag crusher, 14 be drainage bin, 15 be clear water reserviors, 16 is the second heat exchange
Device, Y1 are high temperature resistant type iron salt coagulant medicine system, Y2 is sodium carbonate medicine system.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, wet slag removing system pulp water cyclic utilization system of the present invention includes slurry pond 3, scale removal reactor
6, First Heat Exchanger 11, boiler feedwater water source and boiler feed water system 12；The outlet in slurry pond 3 and scale removal reactor 6
Entrance is connected, and the outlet of scale removal reactor 6 is connected with the heat release side entrance of First Heat Exchanger 11, and First Heat Exchanger 11 is put
Hot side outlet slurry pond 3 is connected, and the outlet at boiler feedwater water source is connected with the heat absorption side entrance of First Heat Exchanger 11, the
The heat absorption side outlet of one heat exchanger 11 is connected with boiler feed water system 12.
Embodiment one
The present embodiment further includes dragveyer 1, high temperature resistant type iron salt coagulant medicine system Y1, pulp water thickener 4, buffered water
Pond 5, sodium carbonate medicine system Y2, moisturizing pipeline, carbon sequestration reactor 7, slag storehouse 2, purified gas fume conveying system 8, flue gas row
Place system 9 and pH value for detecting purified 8 exit flue gas of gas fume conveying system and carbon sequestration reactor 77 are changed with first
The pH of pH value monitors system 10 in pipeline between hot device 11；Moisturizing pipeline is connected with the entrance of dragveyer 1, and dragveyer 1 goes out
Mouth is connected with the entrance in slurry pond 3, the outlet in slurry pond 3 and outlet and the slag of high temperature resistant type iron salt coagulant medicine system Y1
The entrance of water thickener 4 is connected, and the water outlet of pulp water thickener 4 is connected with the entrance in buffering pond 5, buffering pond 5
Outlet and the outlet of sodium carbonate medicine system Y2 are connected with the entrance of scale removal reactor 6, the outlet and carbon sequestration of scale removal reactor 6
The entrance of reactor 7 is connected, and the outlet of carbon sequestration reactor 7 is connected with the heat release side entrance of First Heat Exchanger 11, and first changes
The heat release side outlet of hot device 11 is connected with the entrance of dragveyer 1, purified gas fume conveying system 8 and carbon sequestration reactor 7
Air inlet is connected, and the exhaust outlet of carbon sequestration reactor 7 is connected with flue gas emission 9；The slag-drip opening and pulp water of dragveyer 1 are dense
The slag-drip opening of contracting machine 4 is connected with the entrance in slag storehouse 2.
Wet slag removing system pulp water circulation utilization method of the present invention the following steps are included:
The fishing pulp water that dragveyer 1 exports enters in slurry pond 3, the fishing pulp water and high temperature resistant type molysite that slurry pond 3 exports
The high temperature resistant type iron salt coagulant of coagulant medicine system Y1 output enters in pulp water thickener 4, in pulp water thickener 4,
Suspended matter and colloid in fishing pulp water are solidified under the action of high temperature resistant type iron salt coagulant, to remove the glue in fishing pulp water
Body and suspended matter, the clear water that pulp water thickener 4 exports enter in scale removal reactor 6 after buffering pond 5 buffers, and pass through carbonic acid
Sodium carbonate is added into scale removal reactor 6 in sodium medicine system Y2, so that the calcium ion in clear water is reacted with sodium carbonate, generates carbonic acid
Calcium, and be attached on crystal seed, then it is discharged as desulfurizing agent；
The clear water that scale removal reactor 6 exports enters in carbon sequestration reactor 7, what purified gas fume conveying system 8 exported
Flue gas is passed through in the clear water in carbon sequestration reactor 7, to reduce the basicity of clear water, wherein is led to by controlling into carbon sequestration reactor 7
The flue gas flow entered, so that the pH value of clear water is discharged less than 8.0 in carbon sequestration reactor 7, the flue gas that carbon sequestration reactor 7 is discharged is through flue gas
Exhaust system 9 is discharged, and the clear water that carbon sequestration reactor 7 is discharged enters fishing slag after the cold side heat release of First Heat Exchanger 11
In machine 1；
The boiler replenishing water of boiler replenishing water water source output is sent into boiler feedwater after the heat absorption of the heat absorbing side of First Heat Exchanger 11
In system 12；
The deslagging of dragveyer 1 and pulp water thickener 4 enters in slag storehouse 2.
Embodiment two
With reference to Fig. 2, the present embodiment further includes moisturizing pipeline, slag crusher 13, drainage bin 14, clear water reserviors 15, the second heat exchanger
16, purified gas fume conveying system 8, flue gas emission 9 and for detecting 11 heat absorbing side inlet flue gas of First Heat Exchanger
11 cold side exit water of pH value and First Heat Exchanger pH value pH monitor system 10；Moisturizing pipeline enters with slag crusher 13
Mouth is connected, and the outlet of slag crusher 13 is through slurry pond 3, drainage bin 14, clear water reserviors 15 and scale removal reactor 6 and the second heat exchanger 16
Water inlet be connected, the water outlet of the second heat exchanger 16 is connected with the heat release side entrance of First Heat Exchanger 11, first heat exchange
The heat release side outlet of device 11 is connected with the entrance of slag crusher 13, purified gas fume conveying system 8 and the second heat exchanger 16
Air inlet is connected, and the gas outlet of the second heat exchanger 16 is connected with flue gas emission 9.
The present embodiment and the main distinction of embodiment one are that the clear water that scale removal reactor 6 exports enters the second heat exchange
In device 16, it is purified after flue gas reduce basicity, then into First Heat Exchanger 11, while lowering the carbon emission of flue gas
Amount.
Embodiment three
With reference to Fig. 3, the present embodiment further includes dragveyer 1 and moisturizing pipeline；The outlet of dragveyer 1 and the entrance in slurry pond 3
It is connected, the heat release side outlet of First Heat Exchanger 11 is connected with the entrance of dragveyer 1, the entrance of moisturizing pipeline and dragveyer 1
It is connected.
The above is only the citing of implementation steps of the invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improve and become
Type also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of wet slag removing system pulp water cyclic utilization system, which is characterized in that including slurry pond (3), scale removal reactor (6),
First Heat Exchanger (11), boiler feedwater water source and boiler feed water system (12)；
The outlet in slurry pond (3) is connected with the entrance of scale removal reactor (6), the outlet of scale removal reactor (6) and the first heat exchange
The heat release side entrance of device (11) is connected, and the heat release side outlet of First Heat Exchanger (11) is connected with slurry pond (3), boiler supply
The outlet at water water source is connected with the heat absorption side entrance of First Heat Exchanger (11), the heat absorption side outlet and pot of First Heat Exchanger (11)
Furnace makeup Water System (12) is connected.
2. wet slag removing system pulp water cyclic utilization system according to claim 1, which is characterized in that further include dragveyer
(1), high temperature resistant type iron salt coagulant medicine system (Y1), pulp water thickener (4), buffering pond (5), sodium carbonate medicine system
(Y2), moisturizing pipeline, carbon sequestration reactor (7), slag storehouse (2), purified gas fume conveying system (8) and flue gas emission (9)；
Moisturizing pipeline is connected with the entrance of dragveyer (1), and the outlet of dragveyer (1) is connected with the entrance of slurry pond (3), slag
The outlet of stock tank (3) and the outlet of high temperature resistant type iron salt coagulant medicine system (Y1) are connected with the entrance of pulp water thickener (4)
Logical, the water outlet of pulp water thickener (4) is connected with the entrance of buffering pond (5), and the outlet and sodium carbonate for buffering pond (5) add
The outlet of medicine system (Y2) is connected with the entrance of scale removal reactor (6), the outlet of scale removal reactor (6) and carbon sequestration reactor
(7) entrance is connected, and the outlet of carbon sequestration reactor (7) is connected with the heat release side entrance of First Heat Exchanger (11), and first changes
The heat release side outlet of hot device (11) is connected with the entrance of dragveyer (1), and purified gas fume conveying system (8) is reacted with carbon sequestration
The air inlet of device (7) is connected, and the exhaust outlet of carbon sequestration reactor (7) is connected with flue gas emission (9)；
The slag-drip opening of dragveyer (1) and the slag-drip opening of pulp water thickener (4) are connected with the entrance of slag storehouse (2).
3. wet slag removing system pulp water cyclic utilization system according to claim 2, which is characterized in that further include for detecting
It is managed between the pH value and carbon sequestration reactor (7) and First Heat Exchanger (11) of purified gas fume conveying system (8) exit flue gas
The pH of pH value monitors system (10) in road.
4. wet slag removing system pulp water cyclic utilization system according to claim 1, which is characterized in that further include water supply pipe
Road, slag crusher (13), drainage bin (14), clear water reserviors (15), the second heat exchanger (16), purified gas fume conveying system (8) and
Flue gas emission (9)；
Moisturizing pipeline is connected with the entrance of slag crusher (13), the outlet of slag crusher (13) through slurry pond (3), drainage bin (14),
Clear water reserviors (15) and scale removal reactor (6) are connected with the water inlet of the second heat exchanger (16), the water outlet of the second heat exchanger (16)
Mouth is connected with the heat release side entrance of First Heat Exchanger (11), heat release side outlet and slag crusher (13) of First Heat Exchanger (11)
Entrance is connected, and purified gas fume conveying system (8) is connected with the air inlet of the second heat exchanger (16), the second heat exchanger
(16) gas outlet is connected with flue gas emission (9).
5. wet slag removing system pulp water cyclic utilization system according to claim 4, which is characterized in that further include for detecting
The pH of the pH value of the pH value and First Heat Exchanger (11) cold side exit water of First Heat Exchanger (11) heat absorbing side inlet flue gas
Monitoring system (10).
6. wet slag removing system pulp water cyclic utilization system according to claim 1, which is characterized in that further include dragveyer
(1) and moisturizing pipeline；
The outlet of dragveyer (1) is connected with the entrance of slurry pond (3), the heat release side outlet and dragveyer of First Heat Exchanger (11)
(1) entrance is connected, and moisturizing pipeline is connected with the entrance of dragveyer (1).
7. a kind of wet slag removing system pulp water circulation utilization method, which is characterized in that be based on wet slag removing system as claimed in claim 2
Pulp water cyclic utilization system, comprising the following steps:
The fishing pulp water of dragveyer (1) output enters in slurry pond (3), the fishing pulp water and high temperature resistant sections of slurry pond (3) output
The high temperature resistant type iron salt coagulant of salt coagulant medicine system (Y1) output enters in pulp water thickener (4), is concentrated in pulp water
In machine (4), the suspended matter and colloid fished out in pulp water is solidified under the action of high temperature resistant type iron salt coagulant, to remove fishing slag
The clear water of colloid and suspended matter in water, pulp water thickener (4) output enters scale removal reactor after buffering pond (5) buffering
(6) in, by sodium carbonate medicine system (Y2) to sodium carbonate is added in scale removal reactor (6) so that the calcium ion in clear water with
Sodium carbonate reaction, generates calcium carbonate, and be attached on crystal seed, is then discharged as desulfurizing agent；
The clear water of scale removal reactor (6) output enters in carbon sequestration reactor (7), purified gas fume conveying system (8) output
Flue gas be passed through in the clear water in carbon sequestration reactor (7), to reduce the basicity of clear water, wherein by control to carbon sequestration reactor
(7) flue gas flow being passed through in, so that the pH value of carbon sequestration reactor (7) discharge clear water is less than 8.0, carbon sequestration reactor (7) is discharged
Flue gas discharged through flue gas emission (9), carbon sequestration reactor (7) discharge clear water putting through First Heat Exchanger (1) (1)
It is entered after hot side heat release in dragveyer (1)；
The boiler replenishing water of boiler replenishing water water source output is sent into boiler feedwater system after the heat absorption of the heat absorbing side of First Heat Exchanger (11)
In system (12)；
The deslagging of dragveyer (1) and pulp water thickener (4) enters in slag storehouse (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910511940.XA CN110131702A (en) | 2019-06-13 | 2019-06-13 | A kind of wet slag removing system pulp water cyclic utilization system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910511940.XA CN110131702A (en) | 2019-06-13 | 2019-06-13 | A kind of wet slag removing system pulp water cyclic utilization system and method |
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ID=67577099
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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