CN110194553A - A kind of flue gas ammonia method desulfurizing waste water treatment system - Google Patents
A kind of flue gas ammonia method desulfurizing waste water treatment system Download PDFInfo
- Publication number
- CN110194553A CN110194553A CN201910488615.6A CN201910488615A CN110194553A CN 110194553 A CN110194553 A CN 110194553A CN 201910488615 A CN201910488615 A CN 201910488615A CN 110194553 A CN110194553 A CN 110194553A
- Authority
- CN
- China
- Prior art keywords
- waste water
- flue gas
- filter plant
- strainer
- treatment system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 65
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 56
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 21
- 239000002351 wastewater Substances 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 52
- 230000023556 desulfurization Effects 0.000 claims abstract description 52
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 39
- 238000002425 crystallisation Methods 0.000 claims abstract description 27
- 230000008025 crystallization Effects 0.000 claims abstract description 27
- 238000001704 evaporation Methods 0.000 claims abstract description 22
- 230000008020 evaporation Effects 0.000 claims abstract description 22
- 238000009826 distribution Methods 0.000 claims abstract description 18
- 239000013505 freshwater Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 18
- 230000003139 buffering effect Effects 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 16
- 239000000047 product Substances 0.000 description 15
- 239000012535 impurity Substances 0.000 description 14
- 238000005915 ammonolysis reaction Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 239000003517 fume Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 229940095054 ammoniac Drugs 0.000 description 5
- 239000005864 Sulphur Substances 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 150000003863 ammonium salts Chemical class 0.000 description 4
- ZETCGWYACBNPIH-UHFFFAOYSA-N azane;sulfurous acid Chemical compound N.OS(O)=O ZETCGWYACBNPIH-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 239000000908 ammonium hydroxide Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- 241000255964 Pieridae Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- JZRWCGZRTZMZEH-UHFFFAOYSA-N Thiamine Natural products CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N JZRWCGZRTZMZEH-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- KYMBYSLLVAOCFI-UHFFFAOYSA-N thiamine Chemical compound CC1=C(CCO)SCN1CC1=CN=C(C)N=C1N KYMBYSLLVAOCFI-UHFFFAOYSA-N 0.000 description 1
- 229960003495 thiamine Drugs 0.000 description 1
- 235000019157 thiamine Nutrition 0.000 description 1
- 239000011721 thiamine Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of flue gas ammonia method desulfurizing waste water treatment systems, including the heat-exchange apparatus being sequentially communicated, surge tank, filter device, reverse osmosis equipment and evaporation crystallization equipment, the heat-exchange apparatus is located at flue entrance, the heat-exchange apparatus is provided with the input duct for flowing into for desulfurization wastewater, the surge tank is provided with distribution device, the top side of the surge tank is equipped with the ammonia pipeline for being connected with desulfurizing tower, the fresh water pipeline of the reverse osmosis equipment is connected with desulfurizing tower, the concentrated water pipeline of the reverse osmosis equipment is connected with the evaporation crystallization equipment.Using the flue gas ammonia method desulfurizing waste water treatment system of technical solution of the present invention, the flue gas ammonia method desulfurizing waste water treatment system structure is simple, it can make full use of the resource of desulfurization wastewater, reduce secondary pollution and improve resource utilization, and to lack operating cost low for the system energy consumption.
Description
Technical field
The present invention relates to fume treatment technical fields, and in particular to a kind of flue gas ammonia method desulfurizing waste water treatment system.
Background technique
The one kind of the ammonia process of desulfurization as high efficiency wet desulfurizing process, China promote and apply stood firm a seat it
Ground, its working principle is that carrying out contact using ammonium hydroxide as desulfurization absorbent with the flue gas entered in desulfurizing tower and mixing, in flue gas
Sulfur dioxide and ammonium hydroxide react and produce ammonium sulfite, oxidation reaction production ammonium sulfate is carried out with the oxygen blasted, hereafter
Ammonium sulfate crystallization cooling etc. is generated into chemical fertilizer ammonium sulfate.Ammonia process is absorption method, and the extensive ammonia source in China can be made full use of
Sulfur fertilizer is produced, the notch of a large amount of imported sulphurs in China is made up, has not only administered the pollution of sulfur dioxide, but also meets long-term a large amount ofization
Fertile demand, the country have carried out constantly research and development and have promoted.
The waste water of the ammonia process of desulfurization can produce the thiamine fertilizer of high added value, but existing system after having been treated
Structure is complicated, and energy consumption is high, and operating cost is high, and cannot make full use of the resource in desulfurization wastewater, while causing secondary pollution
Also result in the wasting of resources.
Summary of the invention
The object of the present invention is to provide a kind of flue gas ammonia method desulfurizing waste water treatment system, the flue gas ammonia method desulfurizing waste water
Processing system structure is simple, can make full use of the resource of desulfurization wastewater, reduces secondary pollution and improves resource utilization, and should
It is low that system energy consumption lacks operating cost.
Based on this, the present invention provides a kind of flue gas ammonia method desulfurizing waste water treatment systems, including the heat exchange being sequentially communicated
Equipment, surge tank, filter device, reverse osmosis equipment and evaporation crystallization equipment, the heat-exchange apparatus are located at flue entrance, institute
It states heat-exchange apparatus and is provided with input duct for flowing into for desulfurization wastewater, the surge tank is provided with distribution device, described
The top side of surge tank is equipped with the ammonia pipeline for being connected with desulfurizing tower, the fresh water pipeline and desulfurizing tower of the reverse osmosis equipment
It is connected, the concentrated water pipeline of the reverse osmosis equipment is connected with the evaporation crystallization equipment.
Preferably, the distribution device includes several gas nozzles and the blower for supplying for the gas nozzle, described
Gas nozzle is located in the surge tank and is set to the bottom side of the surge tank, and the blower is located on the outside of the surge tank.
Preferably, the gas nozzle is in and is arranged side by side close to the bottom side of the surge tank, and the opening of the gas nozzle
It is arranged towards the bottom side of the surge tank.
Preferably, the filter device includes the first filter plant and the second filter plant being connected, described
The water inlet end of first filter plant is connected with the surge tank, and the water outlet of second filter plant reverse osmosis is set with described
Standby to be connected, the filtering accuracy of second filter plant is higher than the filtering accuracy of second filter plant.
Preferably, the water outlet of first filter plant passes through the first water pump and second filter plant
Water inlet end is connected, and the water outlet of second filter plant is connected by the second water pump with the water inlet end of the reverse osmosis equipment
It is logical.
Preferably, first filter plant includes tank body, on the water inlet end for remembering first filter plant
Pipeline is inlet tube, remembers that the pipeline on the outlet end of first filter plant is outlet, the inlet tube is arranged described
The bottom side of tank body, the outlet are arranged in the top side of the tank body, are provided in the tank body positioned at the inlet tube and institute
The strainer between outlet is stated, the tank body is additionally provided with bolster, and the bolster is fixedly connected on the bottom of the tank body,
The setting of the nozzle face of the bolster and inlet tube, and the bolster be completely covered in the projection of the inner tank wall it is described
The nozzle of inlet tube.
Preferably, the inlet tube and the outlet are separately positioned on two sides opposite on the tank body,
The strainer is obliquely installed in the tank body, and the strainer is the first side of the strainer close to the side of the inlet tube,
The strainer is second side of the strainer close to the side of the outlet pipe, and the first side of the strainer is higher than the strainer
Second side.
Preferably, the quantity of the strainer is multiple, and multiple strainers are arranged in parallel, along the tank
On the vertical direction of body, the mesh mesh number of each strainer gradually increases from the bottom to top.
Preferably, the filtering accuracy of first filter plant is 100-1000 μm, second filter plant
For cartridge filter, the filtering accuracy of the cartridge filter is 0.5-100 μm.
Preferably, the salt rejection rate of the reverse osmosis equipment is greater than 98%, and the evaporation crystallization equipment is MVR evaporation
Device.
The implementation of the embodiments of the present invention has the following beneficial effects:
Desulfurization wastewater flows through heat-exchange apparatus and flows through, and realizes heat temperature raising by the fume afterheat at flue entrance, real
Show fume afterheat to be fully utilized, so that resource is fully utilized and makes the system energy consumption few, and surge tank is provided with cloth
Device of air, the top side of surge tank are equipped with the ammonia pipeline for being connected with desulfurizing tower, and the desulfurization wastewater after hereafter heating enters
To surge tank, heating can be improved the solubility of ammonium salt and reduce the solubility of ammonia, thus not sufficiently reactive in sulphur waste water
Ammonia flowed out into from the ammonia pipeline of top side and be further used as raw material use into desulfurizing tower, and distribution device is buffering
Air is continuously replenished in tank makes the sulfurous acid ammonia in desulfurization wastewater be oxidized into sulfate of ammoniac, while distribution device is in past buffering
Tank can blow out ammonia while air is continuously replenished, and ammonia is gone forward side by side from the outflow of the ammonia pipeline of the top side of surge tank
Enter to desulfurizing tower reuse, desulfurization wastewater filters the impurity in removal waste water by filter device, so that in final product
Impurity is few, and product quality is high, and the waste water after hereafter removing impurity enters in reverse osmosis equipment, the fresh water pipeline of reverse osmosis equipment
It is connected with desulfurizing tower, the concentrated water pipeline of reverse osmosis equipment is connected with evaporation crystallization equipment, thus the clear water in desulfurization wastewater
Desulfurizing tower is entered to by fresh water pipeline to be recycled, and concentrated water then enters to evaporative crystallization in evaporation crystallization equipment and obtains
Sulfuric acid ammonolysis product, the ammonia not reacted sufficiently in the processing system are able to enter to desulfurizing tower reuse, thus avoid ammonia dirty
Environment is contaminated, the resource in desulfurization wastewater is taken full advantage of, thus reduce secondary pollution and improve resource utilization, it is furthermore reverse osmosis
Equipment then reduces the energy consumption of the system, improves money but also clear water also flows back into desulfurizing tower and is recycled in desulfurization wastewater
The utilization rate in source；In addition, above-mentioned processing system carries out desulfurization to flue gas using less equipment and obtains sulfuric acid ammonolysis product, entirely
System structure is simple, heat-exchange apparatus, surge tank, filter device, reverse osmosis equipment and evaporation crystallization equipment running can be complete
It is handled at desulfurization wastewater, so that the system operation cost is low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of flue gas ammonia method desulfurizing waste water treatment system in the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the first filter plant in the embodiment of the present invention.
In figure: 1, heat-exchange apparatus；2, input duct；3, surge tank；4, distribution device；4a, gas nozzle；4b, blower；5, ammonia
Feed channel；6, the first filter plant；6a, inlet tube；6b, outlet；6c, tank body；6d, bolster；6e, strainer；7, the second mistake
Filter equipment；8, reverse osmosis equipment；9, evaporation crystallization equipment；10, the first water pump；11, the second water pump；12, fresh water pipeline；13, dense
Waterpipe；14, flue entrance.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be understood that various information are described in the present invention using term " first ", " second " etc., but these information
It should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case where range, " first " information can also be referred to as " second " information, and similar, " second " information can also be referred to as
" first " information.
As shown in Figure 1 to Figure 2, in Fig. 1 arrow the flow direction for being oriented to liquid, gas or product, the present embodiment mentions
For a kind of flue gas ammonia method desulfurizing waste water treatment system, including the heat-exchange apparatus 1, surge tank 3, filter device, anti-being sequentially communicated
Penetration equipment 8 and evaporation crystallization equipment 9, the heat-exchange apparatus 1 are located at flue entrance 14, it should be pointed out that the heat
Switching equipment 1 is provided with the input duct 2 for flowing into for desulfurization wastewater, the exemplary selection pipe of heat-exchange device in the present embodiment
Formula heat exchanger, desulfurization wastewater flow through in the pipeline of pipe heat exchanger, and heat-exchange apparatus 1 is arranged in flue entrance in the present embodiment
At 14, flue entrance 14 is the position that flue gas is passed through, and flue-gas temperature is high in this position, and flue gas heat can be used, thus real
The heat of existing flue gas heats desulfurization wastewater, takes full advantage of resource, the surge tank 3 is provided with distribution device 4, described
The top side of surge tank 3 is equipped with the ammonia pipeline 5 for being connected with desulfurizing tower, and the desulfurization wastewater after hereafter heating enters to buffering
In tank 3, heating can be improved the solubility of ammonium salt and reduce the solubility of ammonia, thus ammonia not sufficiently reactive in sulphur waste water
It is flowed out into from the ammonia pipeline 5 of top side and is further used as raw material use into desulfurizing tower, and distribution device 4 is in surge tank 3
Air, which is inside continuously replenished, makes the sulfurous acid ammonia in desulfurization wastewater be oxidized into sulfate of ammoniac, while distribution device 4 is in past buffering
Tank 3 can blow out ammonia while air is continuously replenished, and ammonia is flowed out from the ammonia pipeline 5 of the top side of surge tank 3
And desulfurizing tower reuse is entered to, desulfurization wastewater filters the impurity in removal waste water by filter device, after hereafter removing impurity
Waste water enters in reverse osmosis equipment 8, and the fresh water pipeline 12 of the reverse osmosis equipment 8 is connected with desulfurizing tower, described reverse osmosis
The concentrated water pipeline 13 of equipment 8 is connected with the evaporation crystallization equipment 9, and thus the clear water in desulfurization wastewater passes through fresh water pipeline 12
Desulfurizing tower is entered to be recycled, and concentrated water then enters to evaporative crystallization in evaporation crystallization equipment 9 and obtains sulfuric acid ammonolysis product.
It should be pointed out that reverse osmosis equipment 8 is to utilize the salt in ro components (reverse osmosis membrane etc.) Jiang Shui and water in the present embodiment
Or the separation such as impurity, so that clear water and the concentrated water containing salt or impurity are respectively obtained, and clear water and concentrated water are respectively by fresh water pipeline
12 and concentrated water pipeline 13 flow out.
Based on above technical scheme, desulfurization wastewater flows through heat-exchange apparatus 1 and flows through, and passes through the flue gas at flue entrance 14
Waste heat realizes heat temperature raising, realizes fume afterheat and is fully utilized, so that the system energy consumption is few, and surge tank 3 is provided with cloth
Device of air 4, the top side of surge tank 3 are equipped with the ammonia pipeline 5 for being connected with desulfurizing tower, the desulfurization wastewater after hereafter heating into
Enter to surge tank 3, heating can be improved the solubility of ammonium salt and reduce the solubility of ammonia, thus sufficiently not anti-in sulphur waste water
The ammonia answered is flowed out into from the ammonia pipeline 5 of top side is further used as raw material use into desulfurizing tower, and distribution device 4 exists
Air is continuously replenished in surge tank 3 makes the sulfurous acid ammonia in desulfurization wastewater be oxidized into sulfate of ammoniac, while distribution device 4 exists
Ammonia can be blown out while air is continuously replenished toward surge tank 3, and make ammonia pipeline of the ammonia from the top side of surge tank 3
5 flow out into desulfurizing tower reuse, and desulfurization wastewater filters the impurity in removal waste water by filter device, so that finally
Product in impurity it is few, product quality is high, and the waste water after hereafter removing impurity enters in reverse osmosis equipment 8, reverse osmosis equipment 8
Fresh water pipeline 12 be connected with desulfurizing tower, the concentrated water pipeline 13 of reverse osmosis equipment 8 is connected with evaporation crystallization equipment 9, thus
Clear water in desulfurization wastewater enters to desulfurizing tower by fresh water pipeline 12 and is recycled, and concentrated water then enters to evaporative crystallization
Evaporative crystallization obtains sulfuric acid ammonolysis product in equipment 9, and the ammonia not reacted sufficiently in the processing system is able to enter to desulfurizing tower
Thus reuse avoids ammonia from polluting environment, takes full advantage of the resource in desulfurization wastewater, to reduce secondary pollution and improve money
Source utilization rate, furthermore reverse osmosis equipment 8 then reduces but also clear water also flows back into desulfurizing tower and is recycled in desulfurization wastewater
The energy consumption of the system improves the utilization rate of resource；In addition, above-mentioned processing system carries out desulfurization simultaneously to flue gas using less equipment
Sulfuric acid ammonolysis product is obtained, whole system structure is simple, heat-exchange apparatus 1, surge tank 3, filter device, reverse osmosis equipment 8 and steaming
Desulfurization wastewater processing can be completed in the running of hair crystallizer 9, so that the system operation cost is low.
In the present embodiment, the distribution device 4 includes several gas nozzle 4a and the blower for supplying for the gas nozzle 4a
4b, the gas nozzle 4a are located in the surge tank 3 and are set to the bottom side of the surge tank 3, and the blower 4b is located at described slow
3 outside of tank is rushed, thus blower 4b is the bottom side that gas nozzle 4a is supplied and air is made to enter to surge tank 3, above-mentioned distribution device 4
Structure is simple and low in cost.Further, the gas nozzle 4a is in and is arranged side by side close to the bottom side of the surge tank 3, and multiple
Gas nozzle 4a can be connected by pipeline, i.e. the gas of blower 4b enters in pipeline, and multiple gas nozzle 4a are arranged on pipeline, thus
Realize the steady operation of gas nozzle 4a, and the opening of the gas nozzle 4a is arranged towards the bottom side of the surge tank 3, the opening of gas nozzle 4a
Towards bottom side be arranged, then air-flow is up moved by the bottom side of surge tank 3 so that supplement air sufficiently and desulfurization wastewater into
Row contact, so that sulfurous acid ammoxidation obtains sulfate of ammoniac, while it is also possible that unreacted ammonia sufficiently overflows simultaneously in waste water
Enter to ammonia pipeline 5.
Wherein, the filter device includes the first filter plant 6 and the second filter plant 7 being connected, first mistake
The water inlet end of filter equipment 6 is connected with the surge tank 3, the water outlet of second filter plant 7 and the reverse osmosis equipment 8
It is connected, the filtering accuracy of second filter plant 7 is higher than the filtering accuracy of second filter plant 7, above-mentioned filtering dress
The setting set is so that desulfurization wastewater primary filtration in the first filter plant 6, bulky grain residue in filtered wastewater, and the second mistake
Filter equipment 7 is then further filtered the little particle residue in waste water, so that impurity is more in the product being further ensured that
It is few, improve the quality of product.Preferably, the water outlet of first filter plant 6 passes through the first water pump 10 and second mistake
The water inlet end of filter equipment 7 is connected, and the water outlet of second filter plant 7 passes through the second water pump 11 and the reverse osmosis equipment
8 water inlet end is connected, and since the flow velocity of the waste water in filter plant can reduce, the first water pump 10 and the second water pump 11 can be mentioned
For the power of water flow flowing, then the first water pump 10 and the second water pump 11 flow waste water in the processing system more smooth,
Enable waste water along processing system steady flow.
Specifically, first filter plant 6 includes tank body 6c, remembers the pipe on the water inlet end of first filter plant 6
Road is inlet tube 6a, remembers that the pipeline on the outlet end of first filter plant 6 is outlet 6b, and the inlet tube 6a setting exists
The bottom side of the tank body 6c, the outlet 6b are arranged in the top side of the tank body 6c, are provided in the tank body 6c positioned at institute
The strainer 6e between inlet tube 6a and the outlet 6b is stated, the tank body 6c is additionally provided with bolster 6d, delays in the present embodiment
Stamping 6d is cushioning fender, and the bolster 6d is fixedly connected on the bottom of the tank body 6c, the bolster 6d and inlet tube
The nozzle face of 6a is arranged, and the pipe of the inlet tube 6a is completely covered in the projection of the tank body 6c inner wall by the bolster 6d
Mouthful, due to being equipped with bolster 6d at the face position of inlet tube 6a, when desulfurization wastewater is entered in tank body 6c by inlet tube 6a
When, the direct bumping-buffer 6d of desulfurization wastewater is so that desulfurization wastewater obtains buffer deceleration, the desulfurization wastewater edge after being buffered
Rise inside tank body 6c and complete to flow out along outlet 6b after filtering by strainer 6e, to avoid desulfurization wastewater directly multiple
Impact strainer 6e damages strainer 6e, avoids repeatedly replacing strainer 6e, so that the filter plant is using stabilization and makes
It is long with the service life.
Further, the inlet tube 6a and the outlet 6b are separately positioned on two sides opposite on the tank body 6c
On, the inlet tube 6a and outlet 6b being oppositely arranged then make waste water flow distance after entering tank body 6c long, so that useless
Water is sufficiently filtered, and the strainer 6e is obliquely installed in the tank body 6c, the strainer 6e close to the inlet tube 6a one
Side is the first side of the strainer 6e, second side that the strainer 6e is the strainer 6e close to the side of the outlet pipe, institute
The first side for stating strainer 6e is higher than second side of the strainer 6e, and within the scope of certain space, the strainer 6e being obliquely installed can
Increase strainer 6e area, so that first filter plant 6 is good to the filter effect of desulfurization wastewater, while it may be noted that
It is that tank body 6c is provided with opening and corresponding sealing cover in the first side of strainer 6e in the present embodiment, and thus, it is possible to be convenient for strainer 6e
Replacement and cleaning, and the bottom of tank body 6c also be provided with Residue extraction pipeline realize deslagging function.
In addition, the quantity of the strainer 6e be it is multiple, multiple strainer 6e are arranged in parallel, along the tank body 6c
Vertical direction on, the mesh mesh number of each strainer 6e gradually increases from the bottom to top, thus first filter plant 6 by down toward
Upper realization classified filtering, to guarantee that the bulky grain residue in the filtered desulfurization wastewater of the first filter plant 6 is abundant
Filtering reduces the filtering burden of the second filter plant 7.Further, the filtering accuracy of first filter plant 6 is 100-
1000 μm, second filter plant 7 is cartridge filter, and the filtering accuracy of the cartridge filter is 0.5-100 μm.
In the present embodiment, the salt rejection rate of the reverse osmosis equipment 8 is greater than 98%, thereby guarantees that reverse osmosis equipment 8 meets
The work requirements of the processing system, the evaporation crystallization equipment 9 are that MVR evaporator needs to smoothly obtain sulfuric acid ammonolysis product
, it is noted that MVR evaporator is a preferred embodiment, evaporation crystallization equipment 9 is not limited.
Using the flue gas ammonia method desulfurizing waste water treatment system of the embodiment of the present invention, desulfurization wastewater flows through the stream of heat-exchange apparatus 1
It crosses, and heat temperature raising is realized by the fume afterheat at flue entrance 14, realize fume afterheat and be fully utilized, so that this is
System less energy consumption, and surge tank 3 is provided with distribution device 4, the top side of surge tank 3 is equipped with the ammonia pipe for being connected with desulfurizing tower
Road 5, the desulfurization wastewater after hereafter heating enter in surge tank 3, and heating can be improved the solubility of ammonium salt and reduce ammonia
Solubility, thus ammonia not sufficiently reactive in sulphur waste water is flowed out into desulfurizing tower from the ammonia pipeline 5 of top side into one
Step is used as raw material, and air is continuously replenished in surge tank 3 and makes the sulfurous acid ammonia in desulfurization wastewater by oxygen for distribution device 4
Chemical conversion is sulfate of ammoniac, while distribution device 4 can blow out ammonia while air is continuously replenished toward surge tank 3, and make
Ammonia is flowed out into from the ammonia pipeline 5 of the top side of surge tank 3 to desulfurizing tower reuse, and desulfurization wastewater is filtered by filter device
Remove the impurity in waste water so that impurity is few in final product, product quality is high, the waste water after hereafter removing impurity into
Enter into reverse osmosis equipment 8, the fresh water pipeline 12 of reverse osmosis equipment 8 is connected with desulfurizing tower, the concentrated water pipeline of reverse osmosis equipment 8
13 are connected with evaporation crystallization equipment 9, and thus the clear water in desulfurization wastewater enters to desulfurizing tower by fresh water pipeline 12 and followed
Ring uses, and concentrated water then enters to evaporative crystallization in evaporation crystallization equipment 9 and obtains sulfuric acid ammonolysis product, is not filled in the processing system
Divide the ammonia of reaction to be able to enter to desulfurizing tower reuse, thus avoids ammonia from polluting environment, take full advantage of in desulfurization wastewater
Resource, to reduce secondary pollution and improve resource utilization, furthermore reverse osmosis equipment 8 is but also clear water also flows in desulfurization wastewater
It is back to desulfurizing tower to be recycled, then reduces the energy consumption of the system, improve the utilization rate of resource；In addition, above-mentioned processing system
Desulfurization is carried out to flue gas using less equipment and obtains sulfuric acid ammonolysis product, whole system structure is simple, and heat-exchange apparatus 1 delays
Desulfurization wastewater processing can be completed in the running for rushing tank 3, filter device, reverse osmosis equipment 8 and evaporation crystallization equipment 9, so that
The system operation cost is low.
In the description of the present invention, it is to be understood that, term " on ", "lower", "left", "right", "top", "bottom" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of flue gas ammonia method desulfurizing waste water treatment system, it is characterised in that: including be sequentially communicated heat-exchange apparatus, buffering
Tank, filter device, reverse osmosis equipment and evaporation crystallization equipment, the heat-exchange apparatus are located at flue entrance, the heat exchange
Equipment is provided with the input duct for flowing into for desulfurization wastewater, and the surge tank is provided with distribution device, the surge tank
Top side is equipped with the ammonia pipeline for being connected with desulfurizing tower, and the fresh water pipeline of the reverse osmosis equipment is connected with desulfurizing tower,
The concentrated water pipeline of the reverse osmosis equipment is connected with the evaporation crystallization equipment.
2. flue gas ammonia method desulfurizing waste water treatment system according to claim 1, it is characterised in that: the distribution device includes
Several gas nozzles and blower for supplying for the gas nozzle, the gas nozzle are located in the surge tank and are set to the surge tank
Bottom side, the blower is located on the outside of the surge tank.
3. flue gas ammonia method desulfurizing waste water treatment system according to claim 2, it is characterised in that: the gas nozzle is close to described
The bottom side of surge tank is in be arranged side by side, and the opening of the gas nozzle is arranged towards the bottom side of the surge tank.
4. flue gas ammonia method desulfurizing waste water treatment system according to claim 1, it is characterised in that: the filter device includes
The first filter plant and the second filter plant being connected, the water inlet end of first filter plant are connected with the surge tank
Logical, the water outlet of second filter plant is connected with the reverse osmosis equipment, the filtering accuracy of second filter plant
Higher than the filtering accuracy of second filter plant.
5. flue gas ammonia method desulfurizing waste water treatment system according to claim 4, it is characterised in that: first filter plant
Water outlet be connected by the first water pump with the water inlet end of second filter plant, the water outlet of second filter plant
It is connected by the second water pump with the water inlet end of the reverse osmosis equipment.
6. flue gas ammonia method desulfurizing waste water treatment system according to claim 4, it is characterised in that: first filter plant
Including tank body, remembers that the pipeline on the water inlet end of first filter plant is inlet tube, remember the outlet of first filter plant
Pipeline on end is outlet, and the bottom side of the tank body is arranged in the inlet tube, and the tank body is arranged in the outlet
Top side, the strainer being provided in the tank body between the inlet tube and the outlet, the tank body is additionally provided with slow
Stamping, the bolster are fixedly connected on the bottom of the tank body, the nozzle face setting of the bolster and inlet tube, and institute
State the nozzle that the inlet tube is completely covered in the projection of the inner tank wall for bolster.
7. flue gas ammonia method desulfurizing waste water treatment system according to claim 6, it is characterised in that: the inlet tube and described
Outlet is separately positioned on two sides opposite on the tank body, and the strainer is obliquely installed in the tank body, the strainer
It is the first side of the strainer close to the side of the inlet tube, the strainer is the strainer close to the side of the outlet pipe
Second side, the first side of the strainer is higher than second side of the strainer.
8. flue gas ammonia method desulfurizing waste water treatment system according to claim 6, it is characterised in that: the quantity of the strainer is
Multiple, multiple strainers are arranged in parallel, on the vertical direction along the tank body, the mesh mesh number of each strainer by
Under supreme gradually increase.
9. flue gas ammonia method desulfurizing waste water treatment system according to claim 4, it is characterised in that: first filter plant
Filtering accuracy be 100-1000 μm, second filter plant be cartridge filter, the filtering accuracy of the cartridge filter
It is 0.5-100 μm.
10. flue gas ammonia method desulfurizing waste water treatment system according to any one of claims 1 to 9, it is characterised in that: described anti-
The salt rejection rate of penetration equipment is greater than 98%, and the evaporation crystallization equipment is MVR evaporator.
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