CN110745895A - High-concentration desulfurization waste water flue evaporation treatment device - Google Patents
High-concentration desulfurization waste water flue evaporation treatment device Download PDFInfo
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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Abstract
The invention discloses a high-concentration desulfurization waste water flue evaporation treatment device which is composed of a high-concentration desulfurization waste water inlet pipeline (201), a desulfurization waste water distributor (202), a high moisture-conducting and quick-drying material module (203), a device shell (204), a desulfurization waste water collector (205), a crystallization collection outlet (207), and a drainage pipe orifice (208). The water vapor generated in the evaporation process of the waste heat of the flue gas firstly plays a role in reducing the temperature of the flue gas, and meanwhile, part of fly ash is adhered to the surface of wet crystals to play a role in further purifying the dust content. Then the water vapor enters the desulfurizing tower, the water supplementing amount of the desulfurization is reduced, and the water recycling is realized. The device separates out the crystallization product in the device, the crystallization product can be separately recycled, heavy metal, chloride ions and the like brought by the desulfurization high-concentration wastewater cannot be doped in fly ash, and secondary pollution cannot be caused in the resource utilization of the fly ash.
Description
Technical Field
The invention relates to a high-concentration desulfurization wastewater flue evaporation treatment device, and belongs to the field of waste gas and wastewater treatment and environmental protection.
Background
Many treatment methods for zero discharge of desulfurization high-concentration wastewater have been made at home and abroad, and several typical main process methods comprise 1, pretreatment of desulfurization wastewater, membrane filtration device and drying. 2. Pretreatment of desulfurization wastewater, evaporative crystallization and drying. 3. The salt concentration process comprises the steps of salt separation of a nanofiltration system, evaporative crystallization and drying. 4. And (3) a high-temperature flue evaporation process.
The membrane filtration process is affected by the membrane life and the high pressure pump power and generally involves high initial costs and operating costs.
Evaporative crystallization methods, including multiple effect evaporative crystallization and MVR, either using steam or using electricity, all consume energy.
The methods have a plurality of successful cases in China, the accounting of investment and operation cost is explained in a plurality of articles, and the cost change influenced by time and price is slightly different and is not listed.
The high-temperature flue evaporation process is used as a treatment method with the lowest initial investment and the lowest operation cost in the methods, and is used by a plurality of power plants at home and abroad. The main process of the method is that high-concentration desulfurization waste water is pretreated and then directly conveyed into a high-temperature flue gas flue, the high-concentration desulfurization waste water is sprayed to the flue through a nozzle, the purpose of evaporation and crystallization of the waste water is facilitated by utilizing the heat of the flue gas, and then crystal grains formed after evaporation and crystallization of the waste water are collected by utilizing a dust remover behind the high-temperature flue gas flue. The selection of high-temperature flue gas for evaporation mainly comprises the following steps (as shown in the attached figure 3): the method is characterized in that high-temperature flue gas behind a flue air preheater is utilized for evaporation treatment, and the process II comprises the following steps: the high-temperature flue gas after the economizer is utilized for evaporation treatment. The two kinds of flue gas all belong to high temperature flue gas, and the flue gas of technology one belongs to used heat, and the flue gas of technology two belongs to the waste heat, and wherein the flue gas temperature of technology two can be higher, can be more favorable to the evaporation of waste water, but the flue gas waste heat originally can utilize air heater to retrieve, has utilized in the waste water evaporation now, can reduce boiler efficiency to a certain extent. Both have the following problems: 1. both the two methods adopt a nozzle atomization mode to spray high-concentration desulfurization wastewater, and the scaling problem of the nozzle is a common problem. 2. The flue gas of the high-temperature flue is not subjected to a dust removal process, the flue gas contains a large amount of dust particles, the gravity and viscosity of the ash in the flue gas are increased by water vapor in an evaporation process, and the ash is deposited on the wall surface of the flue and a support and even blocks the flue. 3. Because the atomization effect cannot be detected and controlled in an operating environment, the change of the flue gas flow or the flue gas temperature caused by the change of the boiler load and the poor atomization effect can cause acid dew point corrosion to the wall surface of a flue and dust removal equipment, the operation of dry electric equipment can be seriously and directly influenced, particularly, a low-temperature economizer is arranged behind a dust remover, and the corrosion to the equipment is inevitably aggravated due to the increase of the concentration of chloride ions in the flue gas and the moisture content of the flue gas. 4. The crystal grains generated by atomization, evaporation and crystallization can be recovered and treated together with fly ash by a subsequent dry dust removal device, and the heavy metal ions, chloride ions and other miscellaneous salts in the high-concentration desulfurization wastewater can be collected together with the fly ash. In the domestic fly ash resource utilization: the comprehensive utilization approach of the fly ash is developed from the application in the aspects of roadbed, filling, concrete admixture, soil improvement and the like in the past to advanced utilization approaches such as cement raw materials, cement admixture, large-scale hydro-junction engineering, pumping concrete, large-volume concrete products, advanced filler and the like. Then the heavy metals and chloride ions are inevitably separated out in the later resource utilization of the fly ash and cause secondary pollution to the environment.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a novel desulfurization waste water zero discharge treatment device.
In order to overcome the technical problem in the high-temperature flue evaporation process, the invention provides a novel device for flue evaporation treatment of high-concentration desulfurization wastewater. The invention defines the device as a smoke salting-out device which is used for the treatment process of high-concentration desulfurization waste water evaporation crystallization zero discharge, is arranged in the front of a tail flue of a boiler entering a desulfurization tower and is connected with an original flue in parallel. The high-concentration desulfurization wastewater subjected to flocculation, precipitation and filtration preliminary pretreatment is conveyed to the hydrophobic outer surface by the hydrophilic inner surface fabric of the moisture-conducting material when passing through a high moisture-conducting quick-drying material module in the flue gas salting-out device, concentrated water on the hydrophobic outer surface is heated, evaporated, further concentrated and crystallized by flue gas waste heat, the flue gas entering a desulfurization tower is directly cooled in the evaporation process of water, and water vapor generated by evaporation is conveyed into the desulfurization tower along with the flue gas to serve as water supplement in the desulfurization process, so that the use amount of desulfurization supplement clean water is reduced; salt in the evaporation back waste liquid can be attached to on the salting device earlier, drops the back and collects the processing from collecting the funnel to accomplish high concentration desulfurization waste water power plant in-system processing, external zero release.
The high ion concentration waste water is evaporated and crystallized by utilizing the waste heat of the flue gas, and comprises the steps of crystallization treatment of miscellaneous salts in the waste liquid, recycling of evaporated water, utilization of waste heat of the flue gas and the like. Compared with other treatment modes, the purposes of water saving, electricity saving and zero discharge of high-concentration wastewater are achieved.
The invention discloses a high-concentration desulfurization waste water flue evaporation treatment device, which consists of a high-concentration desulfurization waste water inlet pipeline (201), a desulfurization waste water distributor (202), a high moisture-conducting quick-drying material module (203), a device shell (204), a desulfurization waste water collector (205), a crystallization collection outlet (207) and a drainage pipe opening (208).
The connection relation of each part is as follows: the desulfurization waste water inlet pipe 201 is connected with a desulfurization waste water distributor 202, and water can be uniformly distributed to the top end surface of the high moisture-conductive and quick-drying material module 203 by using the distributor. The desulfurization waste water distributor 202 is arranged at the top of the device shell 204, and the desulfurization waste water distributor 202 is connected with the device shell 204 through a square flange to prevent micro-positive pressure flue gas in a flue from escaping. There is a small amount of residual desulfurization waste water collector 205 that is not evaporated at the bottom of the device shell 204, the upper part of the desulfurization waste water collector 205 is connected with the device shell 204 by a square flange, and the device bottom at 205 is connected with a drain pipe 208 for discharging the non-evaporated desulfurization waste water. The crystal grains formed on the surface of the high moisture-conductive and quick-drying material fall into a collecting hopper 206, the collecting hopper 206 is welded as a part of the apparatus casing 204, the lowermost part of the collecting hopper 206 is welded with a crystal collecting discharge port 207, and the last crystal grain is discharged out of the salt precipitation apparatus through the crystal collecting discharge port 207.
Further, the flue gas salting-out device is installed in parallel with the flue before the inlet of the desulfurizing tower, as shown in the attached figure 2: the flue gas salting-out device comprises: the high-concentration desulfurization waste water inlet pipeline (201), the desulfurization waste water distributor (202), the high-moisture-conductivity quick-drying material module (203), the device shell (204), the desulfurization waste water collector (205), the collection funnel (206), the crystallization collection outlet (207) and the drainage pipe orifice (208).
Further, the high moisture-conductive and quick-drying material module (203) is composed of an upper end fastening sealing flange 101, an upper end fastening bolt 102, a water diversion groove 103, a quick-drying moisture-conductive material hydrophobic surface 104, a quick-drying moisture-conductive material hydrophilic inner surface 105, a hydrophilic material 106 filled in the middle, a water distribution groove 107, a material end clamping plate 108, a fastening bolt 109, a lower end fastening sealing flange 110, a lower end fastening bolt 111, a water return groove 112, a sealing ring 113 and a flue 114.
Further, the moisture-conductive and quick-drying material is composed of a hydrophobic outer layer 104 on the smoke side and a hydrophilic inner side 105, as shown in fig. 1, a hydrophilic material 106 is filled between the two layers of moisture-conductive and quick-drying materials, the upper end and the lower end of the two layers of moisture-conductive and quick-drying materials are clamped by a material end clamping plate 108, and the two layers of moisture-conductive and quick-drying materials are fixed by a material end fastening bolt after being clamped. The volume of the filled hydrophilic material 106 and the amount of water stored directly related to the volume are determined by the amount of evaporated water, and the amount of water stored in the material needs to be designed to be equal to or greater than the maximum amount of evaporated water.
Further, the upper end and the lower end of the moisture-conductive quick-drying material module are fixed outside the flue 114 in a flange connection mode, the square flange is integrated with the water distribution tank 103 and the water distribution tank 107, the square flange 101 is tightly connected with the flue through the bolt 102, a sealing ring 113 for preventing flue gas leakage needs to be added at the joint of the square flange 101 and the flue, the lower end flange 110 and the flange bolt 111 of the high moisture-conductive quick-drying material module 203 are connected and fixed with the flange at the upper end in the same mode, and the lower end flange 110 is integrated with the water return tank 112.
Further, the high moisture conductivity quick-drying module 203 shown in the drawing 1 is installed on the salt separating device shown in the drawing 2, the salt separating device and a flue of a desulfurization tower are installed in parallel, pretreated high-concentration desulfurization wastewater enters the wastewater distributor 202 from the inlet pipeline 201, the wastewater distributor 202 uniformly distributes the wastewater into the high moisture conductivity quick-drying material module (203), the wastewater exchanges heat with flue gas and evaporates on the surface of the module when passing through the high moisture conductivity quick-drying material module (203), evaporated moisture enters the desulfurization tower along with the flue gas, unevaporated water is collected by the desulfurization wastewater collector (205), and is conveyed to the desulfurization wastewater pretreatment unit through the drainage pipeline (208), and after a crystallization product falls into the collection funnel (206), the crystallization product is discharged through the crystallization collection outlet (207) and is collected and processed.
Further, the pretreated desulfurization wastewater enters the water diversion tank 103 at the upper end of the moisture-conductive and quick-drying module through the inlet pipeline 201, the water diversion tank diverts water by the overflow action of the short edge, the water in the water diversion tank 103 overflows to the water distribution tank 107, under the action of gravity and capillary fiber moisture-conducting, the hydrophilic filler 106 in the moisture-conducting quick-drying material module can quickly absorb the water in the water-distributing groove 107 to the whole filler, the desulfurization waste water in the hydrophilic material is transported to the surface 104 of the hydrophobic material through the hydrophilic inner surface 105 of the high moisture-conductive and quick-drying material under the action of capillary force, the contact heat exchange, evaporation, concentration and crystallization are carried out on the surface of the material and hot flue gas in the flue, and the water supply quantity of the desulfurization wastewater inlet pipeline 201 is adjusted by observing the water yield of the water return tank 112, so that the water supply quantity of the desulfurization wastewater is slightly larger than the evaporation quantity, and the phenomenon is that the water return tank 112 only has a trace amount of water.
Compared with the prior art, the device has the beneficial effects that:
1. the effect of using the high moisture-conductive and quick-drying material as evaporative crystallization can ensure that the crystallization process is carried out on a hydrophobic surface, the hydrophilic inner layer mainly plays a role in conveying and distributing high-concentration wastewater, and the high-concentration wastewater cannot crystallize in the material due to small concentration change. Nozzle atomization is not used, and the risk of scaling and blockage of spraying equipment is avoided.
2. This device installs the evaporative crystallization device in the desulfurizing tower behind the draught fan before, is close to desulfurizing tower flue gas entrance, and this part flue gas has passed through the dust removal of dust remover, and the dust removal effect of present national regulation dry dust remover all is in order to reach more than 98%, and the ash content that the flue gas contains before the desulfurizing tower entrance is very little, consequently does not have the problem that the flue was blockked up to the deposition.
3. The device is arranged behind the draught fan and in front of the desulfurizing tower, has no influence on a dust removal device for treating the boiler tail gas and the draught fan, has no necessary control on the flue gas temperature and the dew point temperature, does not need to consider the problems of electric dust removal, draught fan corrosion, dust deposition and the like, and has higher practicability.
4. The device fully utilizes the waste heat of the flue gas as a heat source for evaporation, and is energy-saving and environment-friendly.
5. The device generates water vapor in the evaporation process of the waste heat of the flue gas, the effect of reducing the temperature of the flue gas is firstly achieved, and meanwhile, part of fly ash is adhered to the surface of wet crystals, so that the effect of further purifying the dust content is achieved. Then the water vapor enters the desulfurizing tower, the water supplementing amount of the desulfurization is reduced, and the water recycling is realized.
6. The device separates out the crystallization product in the device, the crystallization product can be separately recycled, heavy metal, chloride ions and the like brought by the desulfurization high-concentration wastewater cannot be doped in fly ash, and secondary pollution cannot be caused in the resource utilization of the fly ash.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a general view of the apparatus of the present invention.
Fig. 2 is a detailed block diagram of a high moisture conductive and quick drying material module 203.
Fig. 3 is a diagram of practical application in a specific embodiment.
Fig. 4 is a top view of fig. 2.
Fig. 5 is a bottom view of fig. 2.
In the figure:
101 is an upper end fastening sealing flange; 102 is an upper end fastening bolt; 103 is a water diversion trench; 104 is a hydrophobic surface of the quick-drying moisture-conducting material; 105 is a hydrophilic inner side of the quick-drying moisture-conducting material; 106 is a hydrophilic material filled in the middle; 107 is a water distribution tank; 108 is a material end clamping plate; 109 is a fastening bolt; 110 is a lower end fastening sealing flange; 111 is a lower end fastening bolt; 112 is a water return tank; 113 is a seal ring; 114 is a flue.
201 is a high-concentration desulfurization waste water inlet pipeline; 202 is a desulfurization waste water distributor; 203 is a module of a high moisture-conductive and quick-drying material; 204 is the device housing; 205 is a desulfurization waste water collector; 206 is a collection funnel; 207 is a crystal collection drain; 208 is a drain spout.
Detailed Description
Example 1
The high-concentration desulfurization waste water flue evaporation treatment device provided by the embodiment is composed of a high-concentration desulfurization waste water inlet pipeline (201), a desulfurization waste water distributor (202), a high moisture-conducting quick-drying material module (203), a device shell (204), a desulfurization waste water collector (205), a crystallization collection outlet (207) and a drainage pipe opening (208).
The connection relation of each part is as follows: the desulfurization waste water inlet pipe 201 is connected with a desulfurization waste water distributor 202, and water can be uniformly distributed to the top end surface of the high moisture-conductive and quick-drying material module 203 by using the distributor. The desulfurization waste water distributor 202 is arranged at the top of the device shell 204, and the desulfurization waste water distributor 202 is connected with the device shell 204 through a square flange to prevent micro-positive pressure flue gas in a flue from escaping. There is a small amount of residual desulfurization waste water collector 205 that is not evaporated at the bottom of the device shell 204, the upper part of the desulfurization waste water collector 205 is connected with the device shell 204 by a square flange, and the device bottom at 205 is connected with a drain pipe 208 for discharging the non-evaporated desulfurization waste water. The crystal grains formed on the surface of the high moisture-conductive and quick-drying material fall into a collecting hopper 206, the collecting hopper 206 is welded as a part of the apparatus casing 204, the lowermost part of the collecting hopper 206 is welded with a crystal collecting discharge port 207, and the last crystal grain is discharged out of the salt precipitation apparatus through the crystal collecting discharge port 207.
The flue gas salting-out device is installed in parallel with a flue before entering the inlet of the desulfurizing tower, as shown in the attached figure 1: the flue gas salting-out device comprises: the high-concentration desulfurization waste water inlet pipeline (201), the desulfurization waste water distributor (202), the high-moisture-conductivity quick-drying material module (203), the device shell (204), the desulfurization waste water collector (205), the collection funnel (206), the crystallization collection outlet (207) and the drainage pipe orifice (208).
The high moisture-conductive quick-drying material module (203) consists of an upper end fastening sealing flange 101, an upper end fastening bolt 102, a water diversion groove 103, a quick-drying moisture-conductive material hydrophobic surface 104, a quick-drying moisture-conductive material hydrophilic inner surface 105, a hydrophilic material 106 filled in the middle, a water distribution groove 107, a material end clamping plate 108, a fastening bolt 109, a lower end fastening sealing flange 110, a lower end fastening bolt 111, a water return groove 112, a sealing ring 113 and a flue 114.
The moisture-conductive quick-drying material consists of a hydrophobic outer layer 104 on the smoke side and a hydrophilic inner layer 105, as shown in figure 2, a hydrophilic material 106 is filled between the two layers of moisture-conductive quick-drying materials, the upper end and the lower end of the two layers of moisture-conductive quick-drying materials are clamped by a material end clamping plate 108, and the two layers of moisture-conductive quick-drying materials are fixed by a material end fastening bolt after being clamped. The volume of the filled hydrophilic material 106 and the amount of water stored directly related to the volume are determined by the amount of evaporated water, and the amount of water stored in the material needs to be designed to be equal to or greater than the maximum amount of evaporated water.
The upper end and the lower end of the moisture-conducting and quick-drying material module are fixed outside a flue 114 in a flange connection mode, the square flange is integrated with a water distribution tank 103 and a water distribution tank 107, the square flange 101 is fixedly connected with the flue through a bolt 102, a sealing ring 113 for preventing flue gas leakage needs to be added at the joint of the square flange 101 and the flue, the lower end flange 110 and the flange bolt 111 of the high moisture-conducting and quick-drying material module 203 are connected and fixed with the flange at the upper end in the same mode, and the lower end flange 110 and the water return tank 112 are integrated.
The high moisture conductivity quick-drying module 203 shown in the figure 1 is installed on the salt separating device shown in the figure 2, the salt separating device is installed in parallel with a flue entering a desulfurizing tower, pretreated high-concentration desulfurization wastewater enters a wastewater distributor 202 from an inlet pipeline 201, the wastewater distributor 202 uniformly distributes the wastewater into the high moisture conductivity quick-drying material module (203), the wastewater is subjected to heat exchange evaporation with flue gas on the surface of the module when passing through the high moisture conductivity quick-drying material module (203), evaporated moisture enters the desulfurizing tower along with the flue gas, unevaporated water is collected by a desulfurization wastewater collector (205), the water is conveyed to a desulfurization wastewater pretreatment unit through a drainage pipeline (208), and a crystallization product is discharged through a crystallization collection discharge port (207) and collected and processed after falling to a collection funnel (206).
The pretreated desulfurization wastewater enters a water diversion tank 103 at the upper end of a moisture-conducting and quick-drying module through an inlet pipeline 201, the water diversion tank divides water by means of the overflow action of a short edge, the water in the water diversion tank 103 overflows into a water distribution tank 107, under the action of gravity and capillary fiber moisture conduction, a hydrophilic filler 106 in a moisture-conducting and quick-drying material module rapidly absorbs the water in the water distribution tank 107 into the whole filler, the desulfurization wastewater in the hydrophilic material is conveyed to a hydrophobic material surface 104 through a hydrophilic inner surface 105 of a high moisture-conducting and quick-drying material under the action of capillary force, and is contacted with hot flue gas in a flue on the material surface for heat exchange, evaporation and concentration crystallization, and because the water supply quantity of the desulfurization wastewater inlet pipeline 201 is adjusted by observing the water outlet quantity of a water return tank 112, the phenomenon is that the water return quantity of the desulfurization wastewater is slightly larger than the evaporation quantity of the water return tank 112.
Example 2
The device that this embodiment provided is modular design, according to design flue gas volume and design flue gas temperature, desulfurization process and desulfurization waste water composition, the design displacement of high concentration desulfurization waste water etc. of desulfurizing tower entry, the size of device designs the lectotype according to the available actual space of equipment.
The basic design parameters need to guarantee:
1. evaporation area of the quick-drying moisture-conductive material: the amount of the evaporated water of the evaporation surface area of the quick-drying material in contact with the flue gas satisfies the designed discharge amount of the desulfurization wastewater.
2. The maximum flow speed of the flue gas in the device is controlled within 3 meters, so that the phenomenon that fine grains are carried into a desulfurizing tower by overhigh flow speed of the flue gas is prevented.
3. The water balance in the device needs to meet the following requirements: the water content and water guide amount of the hydrophilic material are slightly larger than those of the high moisture-conductive quick-drying material, and the water guide amount of the high moisture-conductive quick-drying material is slightly larger than the surface evaporation water amount contacted with the smoke.
4. The arrangement of the moisture-conducting and quick-drying modules in the device needs to be reasonably arranged according to the module quantity, and the working environment of each moisture-conducting and quick-drying module is the same as much as possible by designing the guide plates and other modes, so that the uneven evaporation or poor crystallization effect caused by the bias flow of the smoke is avoided.
5. As shown in the attached figure 3 of the specification, the device is arranged at a flue gas inlet of a desulfurizing tower in a bypass mode, 3 flue gas damper doors are added, and when the device is in normal operation, a bypass valve 2 is closed, and a bypass valve 1 and a bypass valve 3 are opened; when the device overhauls or other troubles, stop the supply of high concentration desulfurization waste water, open bypass valve 2, close bypass valve 1 and bypass valve 3 simultaneously, personnel get into the inside maintenance of device after the air purge.
This is a layout position diagram of the apparatus in fig. 3, showing only the installation position. Fig. 1 is a general structure diagram of the device, fig. 2 is a detailed diagram of one module in the general structure diagram, according to the difference of the flue gas volume, a plurality of modules similar to fig. 2 can be installed in the diagram I, and various types of devices suitable for different flue gas volumes are formed.
6. The hot air inlet and the dry-wet junction of the device adopt high-temperature-resistant acid-alkali-resistant corrosion-resistant dual-phase steel or titanium plates, and the carbon steel lining glass fiber reinforced plastic is adopted for corrosion prevention at the evaporation rear section. The flue from the device to the desulfurizing tower is treated by a carbon steel lining glass fiber reinforced plastic corrosion prevention method. To increase the acid dew point corrosion of the flue gas caused by the decrease of the temperature of the wet flue gas and the increase of the moisture content.
7. After the flue gas distribution device is put into operation, the flue gas volume distribution of the main flue and the bypass flue is adjusted by adjusting the baffle air door on the main flue so as to achieve a good air distribution effect.
8. Taking a 20-ten-thousand-watt coal-fired power generating set and calcium desulphurization as examples, the smoke volume of a general boiler is 90 x 104m3And h, the temperature of the flue gas entering the outlet of the induced draft fan is 120 ℃, and the moisture content of the flue gas is 7%. The generation amount of high-concentration desulfurization waste water is about 4t/h, and Coolmax material CMOO3 is taken as an example of a quick-drying material module.
The test shows that the evaporation rate of CMOO3 is w =17.22kg/m under the conditions that the evaporation temperature of the surface of water in the flue is 90 ℃, the relative humidity of the flue gas is 30% and the flow rate of the flue gas is 3m/s2·h。
The contact surface area of the material required by the high moisture-transmitting and quick-drying material device and the smoke is 4 x 1000/17.22=232m2And selecting 250 square meters.
Selecting 13 moisture-conductive and quick-drying modules with the sizes of 5 meters in length and 2 meters in height, and referring to the attached drawings 1-2 in the total device: the overall diagram of the smoke salting-out device has the overall dimensions of 6 meters in length, 4 meters in width and 5 meters in height.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (5)
1. The high-concentration desulfurization waste water flue evaporation treatment device is characterized by comprising a high-concentration desulfurization waste water inlet pipeline (201), a desulfurization waste water distributor (202), a high-moisture-conductivity and quick-drying material module (203), a device shell (204), a desulfurization waste water collector (205), a collecting funnel (206), a crystallization collecting outlet (207) and a drainage pipe opening (208); the connection relation of each part is as follows: the desulfurization waste water inlet pipeline 201 is connected with a desulfurization waste water distributor 202, and water can be uniformly distributed to the top end surface of the high moisture-conducting and quick-drying material module 203 by using the distributor; the desulfurization waste water distributor 202 is arranged at the top of the device shell 204, and the desulfurization waste water distributor 202 is connected with the device shell 204 through a square flange to prevent micro-positive pressure flue gas in a flue from escaping; a desulfurization waste water collector 205 is arranged at the bottom of the device shell 204, the upper part of the desulfurization waste water collector 205 is connected with the device shell 204 by a square flange, and the bottom of the device 205 is connected with a drain pipe 208 for discharging the non-evaporated desulfurization waste water; the crystal grains formed on the surface of the high moisture-conductive and quick-drying material fall into a collecting hopper 206, the collecting hopper 206 is welded as a part of the apparatus casing 204, the lowermost part of the collecting hopper 206 is welded with a crystal collecting discharge port 207, and the last crystal grain is discharged out of the salt precipitation apparatus through the crystal collecting discharge port 207.
2. The evaporation treatment device for the high concentration desulfurization wastewater flue according to claim 1, characterized in that the high moisture-conductive and quick-drying material module (203) is composed of an upper end fastening sealing flange 101, an upper end fastening bolt 102, a water diversion groove 103, a quick-drying moisture-conductive material hydrophobic surface 104, a quick-drying moisture-conductive material hydrophilic inner face 105, a hydrophilic material 106 filled in the middle, a water distribution groove 107, a material end clamping plate 108, a fastening bolt 109, a lower end fastening sealing flange 110, a lower end fastening bolt 111, a water return groove 112, a sealing ring 113 and a flue 114.
3. The evaporation treatment device for the high-concentration desulfurization wastewater flue as claimed in claim 2, wherein the moisture-conductive and quick-drying material is composed of a hydrophobic surface 104 of the quick-drying and quick-drying material on the hydrophobic outer layer of the flue gas side and a hydrophilic inner surface 105 of the quick-drying and quick-drying material on the hydrophilic inner side, the two layers of the quick-drying and quick-drying material are filled with a hydrophilic material 106, the upper end and the lower end of the quick-drying and quick-drying material are clamped by material end clamping plates 108, and the quick-drying and quick-drying material is fixed.
4. The evaporation treatment device for the flue with high concentration desulfurization wastewater as claimed in claim 2, wherein the upper and lower ends of the moisture-conductive and quick-drying material module are fixed outside the flue 114 by flange connection, the square flange is integrated with the water diversion tank 103 and the water distribution tank 107, the square flange 101 is tightly connected with the flue by bolts 102, a sealing ring 113 for preventing flue gas leakage needs to be added at the joint of the square flange 101 and the flue, the lower end flange 110 and the flange bolts 111 of the moisture-conductive and quick-drying material module 203 are fixed to the upper end flange in the same way, and the lower end flange 110 is integrated with the water return tank 112.
5. The high concentration desulfurization wastewater flue evaporation treatment device of claim 1, wherein the high moisture-conductive and quick-drying module 203 is installed on the high concentration desulfurization wastewater flue evaporation treatment device, the high concentration desulfurization wastewater flue evaporation treatment device is installed in parallel with a flue entering a desulfurization tower, pretreated high concentration desulfurization wastewater enters the wastewater distributor 202 from the inlet pipe 201, the wastewater distributor 202 distributes the wastewater into the high moisture-conductive and quick-drying material module (203), and when the wastewater passes through the high moisture-conductive and quick-drying material module (203), the flue gas and the evaporated moisture are subjected to heat exchange evaporation on the surface of the module, the evaporated moisture enters the desulfurizing tower along with the flue gas, the unevaporated water is collected by a desulfurizing wastewater collector (205), the unevaporated water is conveyed to a desulfurizing wastewater pretreatment unit through a drainage pipeline (208), and a crystallization product is discharged through a crystallization collection discharge port (207) and is collected and processed after falling to a collection funnel (206).
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