CN106630337A - Method and device used for processing waste water - Google Patents
Method and device used for processing waste water Download PDFInfo
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- CN106630337A CN106630337A CN201510730123.5A CN201510730123A CN106630337A CN 106630337 A CN106630337 A CN 106630337A CN 201510730123 A CN201510730123 A CN 201510730123A CN 106630337 A CN106630337 A CN 106630337A
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Abstract
The invention provides a method and a device used for processing waste water. The processing device comprises a waste water preheater, a processor, a vapor compressor, a condensed water collector, and a scaling device. The invention also provides the method used for processing waste water using the device. The method and the system used for processing waste water are safe and reliable; equipment is simple; operation cost is low; and energy saving effect is obvious.
Description
Technical field
The present invention relates to a kind for the treatment of method and apparatus of waste water of environmental protection and field of energy-saving technology, specifically process the method and apparatus containing organic compound waste water.
Background technology
Organic wastewater is mainly derived from the fields such as chemical industry, road deicing, food processing, also including dyeing waste water, oil exploitation and processing waste water, paper waste and pesticide industry waste water etc..The total amount of high salt organic waste water is huge and increases year by year.If do not processed it before discharge, the soluble inorganic salt of Coal Gas Washing Cycling Water and the toxic organic compound of difficult degradation can cause serious environmental pollution, and soil and surface water, underground water are damaged.Therefore, in today of water scarcity, it is very necessary to research and develop effective high salt Technologies for Organic Wastewater Treatment.At present, the treatment technology of high salt organic waste water is more, mainly there is physical-chemical process, bioanalysis and combinations thereof technique.
In recent years, foreign countries propose and reclaim waste water with the process of function of mechanical steam recompression evaporation technique.Mechanical vapor recompression technology is a Technolqgy for Energy Economizing for reducing energy demand to external world.Its energy-saving principle is：By the indirect steam produced in system through compressor compresses so as to which pressure and temperature rises, enthalpy increases, and instead of the external heat source that must be adopted in original system, and the latent heat of indirect steam is fully used, so as to reach the purpose of technical process energy-conservation.
At present, function of mechanical steam recompression system mainly has application in terms of the waste water recycling devices such as saline sewage, oil field reinjection water, pharmacy waste water.Application is yet there are no in terms of pbz polymer organic compound waste water recycling device.Due to the macromolecule organic containing easy coking, fouling in organic wastewater, in the evaporimeter of function of mechanical steam recompression system, with the continuous evaporation of moisture content, organic wastewater is through concentration, boiling point will increase, macromolecule organic will coking, fouling in dope, and be attached on the heat-transfer surface of evaporimeter, evaporator heat exchange efficiency is had a strong impact on, and then the blocking of evaporimeter, pipeline can be caused.
Patent CN102641603A and CN102553274A individually disclose the plate-type evaporator with Mechanical Vapor Compression and tubular evaparator device, at 60 DEG C or so, the vacuum in patent CN102553274A in evaporimeter is 0.05～0.098MPa to operation temperature general control in patent CN102641603A in plate-type evaporator.Two kinds of low temperature are evaporated in vacuo mode, reduce the boiling point of material, and the method is suitable for the evaporation and concentration of heat sensitive material and easy fouling material.
Patent CN104001339A discloses a kind of MVR plate evaporations system, evaporates the indirect steam for producing temperature and pressure Jing after compressor compression and improves, and improves the grade of steam so that low temperature position steam can be reused.Multiple-effect evaporation portion can be set in the method vapo(u)rization system so that MVR plate evaporation system applications are wider, but with the increase of evaporation effect number in vapo(u)rization system, the energy efficiency coefficient of Mechanical Vapor Compression will be reduced so that the energy consumption of vapo(u)rization system increases.
CN202315333U, CN203170039U disclose a kind of steam mechanical Compression Evaporation equipment, the utility model is effectively utilized the indirect steam of evaporimeter generation, indirect steam latent heat after pressure-raising increases, using the steam latent heat heated waste water after pressure-raising, reach the purpose for reclaiming water resource, the method has obvious energy-saving effect, but equipment evaporimeter in application process has fouling.
The content of the invention
It is an object of the invention to provide a kind of method and apparatus for processing waste water, method of wastewater treatment of the present invention and device have the advantages that safe and reliable, equipment is simple, operating cost is low, energy-saving effect is obvious.
The invention provides it is a kind of process waste water device, the processing meanss include waste water preheater, processor, vapour compression machine, apparatus for collecting condensed water and fouling device；Wherein wastewater feed pipeline Jing waste water preheater is connected with the charging aperture of processor, the concentrated solution outlet Jing pipelines of processor are connected with the feed(raw material)inlet of fouling device, the condensate outlet Jing pipelines of processor are connected with apparatus for collecting condensed water, the gas vent Jing pipelines of processor are connected with the entrance of vapour compression machine, the outlet Jing pipelines of vapour compression machine are connected with the heat source stream entrance of fouling device, the condensation water outlet Jing pipelines of fouling device are connected with apparatus for collecting condensed water, steam outlet Jing pipelines at the top of fouling device are connected respectively with the heating steam inlet and auxiliary steam entrance of processor, the floss hole of apparatus for collecting condensed water is connected with waste water preheater, the concentrate floss hole Jing pipelines of fouling device are connected with the charging aperture of processor, the dirt floss hole of fouling device bottom is by the outer carrying device of pipeline.
In the device for processing waste water of the present invention, supplementary steam pipe line is set in the outlet of the vapour compression machine and the heat source stream entrance connecting pipeline of fouling device.
In the device for processing waste water of the present invention, the waste water preheater can adopt shell-and-tube heat exchanger, heat-pipe heat exchanger, plate type heat exchanger or lamella heat exchanger, it is preferred to use plate type heat exchanger.
In the device for processing organic wastewater of the present invention, described fouling device is jacket type structure, heated by heat source stream in chuck, the heat source stream is that fouling device evaporates the steam for producing steam again Jing after mechanical compress, and fouling device inner homogeneous arrange 2～6 scraping blades, are preferably provided with 2～4 scraping blades, the scraping blade is driven in fouling device internal rotating by motor, in process of production, scraping blade continuously rotates, and rotary speed is 200r/min～360r/min.
In the device for processing waste water of the present invention, the processor includes upper cover, housing, low head, the upper cover is provided with gas vent, the low head is provided with concentrated solution outlet, and the housing includes vapor-liquid separation section, material distribution section, evaporator section and liquid storage section according to liquid phase material flow direction；Housing above the material distribution section is provided with charging aperture, the evaporator section includes upper perforated plate, evaporation tube, lower perforated plate and gripper shoe, the upper perforated plate and lower perforated plate are fixed on the inwall of housing, the evaporation tube is through upper perforated plate and lower perforated plate, the evaporation tube is vertically arranged in the evaporator section, gripper shoe is provided with below the lower perforated plate, the lower perforated plate is fixedly connected with gripper shoe, the housing of the evaporator section is provided with heating steam inlet and condensate outlet, and the housing of the liquid storage section is provided with auxiliary steam entrance.
In processor of the present invention, demisting facility is provided with the gas-liquid separation section, is specifically as follows any one in woven wire demister, fiber mist eliminator and deflection plate demister.
In processor of the present invention, the charging aperture is connected with feed pipe, and feed distributor is connected with the feed pipe, and the feed distributor can be tubular type, double-deck comb, slot type, disc type, impact type, nozzle-type, pagoda type, shower nozzle type, combined type etc..
In processor of the present invention, filler is filled with the evaporation tube, described filler can be ceramic material or metal material, preferably ceramic material；Described filler shape can be bar-shaped for Raschig ring, Pall ring, cascade ring, cellular or wolf's fang.
In processor of the present invention, the evaporator section is fixedly connected with liquid storage section, specifically can be connected using flange, and the gripper shoe is located in the middle of flange connection.
In processor of the present invention, multiple holes are provided with the gripper shoe, the diameter in the hole is less than the diameter of filler in evaporation tube, a diameter of 2mm～5mm in the hole.
In processor of the present invention, the gripper shoe is fixedly connected with the lower perforated plate of evaporator section, is in close contact by the adpting flange of evaporator section and liquid storage section, by the adpting flange for dismantling evaporator section and liquid storage section, gripper shoe and lower perforated plate can be unclamped, in order to dismounting and change filler.
In processor of the present invention, the material is distributed section built with filler, and described filler can be consistent with filler in evaporation tube.
In processor of the present invention, the auxiliary steam can be air, nitrogen, steam etc., preferred steam.
In processor of the present invention, the height of the material distribution section is 1 ~ 1.5 times that material is distributed section diameter.
In processor of the present invention, the height of the gas-liquid separation section is 1 ~ 1.5 times of gas-liquid separation section diameter.
In processor of the present invention, the height of the liquid storage section is 1 ~ 2 times of liquid storage section diameter.
In the device for processing waste water of the present invention, described vapour compression machine can adopt the one kind in centrifugal compressor, screw compressor, reciprocating compressor, centrifugal high pressure fan；The compression ratio of the vapour compression machine is 1.3～2.0, preferably 1.4～1.7.
The present invention also provides a kind of method of process waste water, and using said apparatus, methods described includes：
Using waste water preheater, it is used to process raw material waste water and condensate, and raw material waste water and condensate are exchanged heat in waste water preheater, obtain it is preheated after raw material waste water and cooling condensate；
Using processor, it is used to process the raw material waste water come after waste water preheater preheating of hanging oneself, and the 1st stream, the 2nd stream of liquid phase and the condensate of gas phase are obtained after process；
Using vapour compression machine, it is used to compress the 1st stream from processor, and the 3rd stream of gas phase is obtained after process, and the 3rd stream enters fouling device, condensate is obtained after cooling as heat source stream；
Using fouling device, it is used to receive the 2nd stream and the 3rd stream of vapour compression machine from processor, the 4th stream, the 5th stream of liquid phase and the condensate of gas phase are obtained after process, the 4th stream enters processor respectively through the heating steam inlet and auxiliary steam entrance of processor；
Using apparatus for collecting condensed water, it is used for the condensate of the condensate of receiving processor and fouling device, and the 6th stream of liquid phase is obtained after process, and the 6th stream enters waste water preheater.
In the inventive method, raw material waste water is entered in processor in waste water preheater by exchanging heat to close to after saturation temperature with condensate, is evaporated in processor, and the steam for obtaining is Jing after vapour compression machine compression, the latent heat of steam is improved, with compressed steam as fouling device evaporation thermal source.
In the inventive method, raw material waste water in waste water preheater by being preheated to 90 DEG C～102 DEG C with condensate, preferably 95 DEG C～100 DEG C, subsequently in processor.
In the inventive method, the logarithm heat transfer temperature difference in the processor between steam and waste water be 3 DEG C～10 DEG C, preferably 4 DEG C～8 DEG C, meanwhile, in the processor waste water evaporation vaporization rate be 5%～50%, preferably 10%～40%.
In the inventive method, the fouling device processes the gas phase steam that waste water obtains and enters processor respectively through the heating steam inlet and auxiliary steam entrance of processor, wherein to enter the steam consumption of processor and the volume ratio of the steam consumption for entering through auxiliary steam entrance processor be 1～10 through the heating steam inlet of processor:1.
In the inventive method, when device goes into operation, fouling device or during inadequate processor thermal source, need to be gone into operation thermal source as device with the extraneous steam of device, the steam can be made up line in introducing device by steam.
In the inventive method, the processor includes upper cover, housing, low head, the upper cover is provided with gas vent, and the low head is provided with concentrated solution outlet, and the housing includes vapor-liquid separation section, material distribution section, evaporator section and liquid storage section according to liquid phase material flow direction；Housing above the material distribution section is provided with charging aperture, the evaporator section includes upper perforated plate, evaporation tube, lower perforated plate and gripper shoe, the upper perforated plate and lower perforated plate are fixed on the inwall of housing, the evaporation tube is through upper perforated plate and lower perforated plate, the evaporation tube is vertically arranged in the evaporator section, gripper shoe is provided with below the lower perforated plate, the lower perforated plate is fixedly connected with gripper shoe, the housing of the evaporator section is provided with heating steam inlet and condensate outlet, and the housing of the liquid storage section is provided with auxiliary steam entrance.
In above-mentioned processor, demisting facility is provided with the gas-liquid separation section, is specifically as follows any one in woven wire demister, fiber mist eliminator and deflection plate demister.
In above-mentioned processor, the charging aperture is connected with feed pipe, and feed distributor is connected with the feed pipe, and the feed distributor can be tubular type, double-deck comb, slot type, disc type, impact type, nozzle-type, pagoda type, shower nozzle type, combined type etc..
In above-mentioned processor, filler is filled with the evaporation tube, described filler can be ceramic material or metal material, preferably ceramic material；Described filler shape can be bar-shaped for Raschig ring, Pall ring, cascade ring, cellular or wolf's fang.
In above-mentioned processor, state evaporator section and be fixedly connected with liquid storage section, specifically can be connected using flange, the gripper shoe is located in the middle of flange connection.
In above-mentioned processor, multiple holes are provided with the gripper shoe, the diameter in the hole is less than the diameter of filler in evaporation tube, a diameter of 2mm～5mm in the hole.
In above-mentioned processor, the gripper shoe is fixedly connected with the lower perforated plate of evaporator section, is in close contact by the adpting flange of evaporator section and liquid storage section, by the adpting flange for dismantling evaporator section and liquid storage section, gripper shoe and lower perforated plate can be unclamped, in order to dismounting and change filler.
In above-mentioned processor, the material is distributed section built with filler, and described filler can be consistent with filler in evaporation tube.
In above-mentioned processor, the auxiliary steam can be air, nitrogen, steam etc., preferred steam.
In above-mentioned processor, the height of the material distribution section is 1 ~ 1.5 times that material is distributed section diameter.
In above-mentioned processor, the height of the gas-liquid separation section is 1 ~ 1.5 times of gas-liquid separation section diameter.
In above-mentioned processor, the height of the liquid storage section is 1 ~ 2 times of liquid storage section diameter.
Other technologies in the inventive method, the content as known to water pump, heat heat exchange, condensate water collecting, filtration etc. are those skilled in the art.
Compared with prior art, method of wastewater treatment of the present invention has the advantage that：
1st, in method of wastewater treatment of the present invention, water evaporation concentration and recovery is reclaimed using economic benefits and social benefits steam mechanical recompression forced circulation technique, is capable of achieving 85%～99% water resource and is recycled.
2nd, in method of wastewater treatment of the present invention, steam compression system mainly passes through Secondary-steam heating waste water in the present invention, allow wastewater temperature to reach, be even above the temperature of its easy fouling, to realize reaching the purpose of the organic matter in removing waste water, fouling device is provided with the present invention, useless Organic substance in water is made in the inner surface fouling of fouling device and is removed, slow down recycling waste water fouling within a processor so that device long period steady running.
3rd, in method of wastewater treatment of the present invention and device, charging waste water and recycling waste water are mixed into into evaporimeter, so as to reach the purpose of dilution recycling waste water, can further reduce fouling of evaporator risk.
4th, in method of wastewater treatment of the present invention and device, processor is passed through auxiliary steam and filling filler in evaporation tube, improves waste water disengagement area, liquid film renewal speed, increases the rate of heat transfer and heat transfer coefficient of steam and waste water.By loading shaggy filler, occur on filler surface beneficial to waste water fouling, realize that waste water fouling is shifted, reduce a large amount of foulings of evaporation pipe internal surface and affect heat transfer, when filler surface scale is serious, replaceable process.Auxiliary steam and waste water adverse current, increased the turbulent extent of waste water in the evaporation tube of processor, can reduce evaporation tube encrustation.
5th, method of wastewater treatment of the present invention and device have that safe and reliable, equipment is simple, it is low to invest, the features such as.
Description of the drawings
Fig. 1 is the method and apparatus schematic diagram that the present invention processes waste water.
Fig. 2 is the structural representation of processor used by the present invention.
Specific embodiment
The concrete condition of the present invention is further illustrated below by specific embodiment, but is not limited to following embodiments.
Such as Fig. 1, the invention provides a kind of device for processing waste water, the processing meanss include waste water preheater 2, processor 6, vapour compression machine 8, apparatus for collecting condensed water 19 and fouling device 11；Wherein wastewater feed pipeline Jing waste water preheater 2 is connected with the charging aperture of processor 6，The concentrated solution outlet Jing pipelines of processor 6 are connected with the feed(raw material)inlet of fouling device 11，The condensate outlet Jing pipelines of processor 6 are connected with apparatus for collecting condensed water 19，The gas vent Jing pipelines of processor 6 are connected with the entrance of vapour compression machine 8，The outlet Jing pipelines of vapour compression machine 8 are connected with the heat source stream entrance of fouling device 11，The condensation water outlet Jing pipelines of fouling device 11 are connected with apparatus for collecting condensed water 19，The steam outlet Jing pipelines at the top of fouling device 11 are connected respectively with the heating steam inlet and auxiliary steam entrance of processor 6，The floss hole of apparatus for collecting condensed water 19 is connected with waste water preheater 2，The concentrate floss hole Jing pipelines of fouling device 11 are connected with the charging aperture of processor 6，The dirt floss hole of the bottom of fouling device 11 is by the outer carrying device of pipeline.
In the device for processing waste water of the present invention, supplementary steam pipe line is set in the outlet of the vapour compression machine and the heat source stream entrance connecting pipeline of fouling device.
As shown in Figure 2, processor of the present invention includes upper cover 1, housing 2, low head 3, the upper cover 1 is provided with gas vent 4, the low head 3 is provided with concentrated solution outlet 5, and the housing 2 includes vapor-liquid separation section 6, material distribution section 7, evaporator section 8 and liquid storage section 9 according to liquid phase material flow direction；The gas-liquid separation section 6 is provided with fiber mist eliminator 20，The housing of the top of material distribution section 7 is provided with charging aperture 16，The charging aperture is connected with feed pipe 17，The feed pipe 17 is connected with feed distributor 19，The evaporator section 8 includes upper perforated plate 10、Evaporation tube 11、Lower perforated plate 12，The upper perforated plate 10 and lower perforated plate 12 are fixed on the inwall of housing，The evaporation tube 11 is through upper perforated plate 10 and lower perforated plate 12，The evaporation tube 11 is vertically arranged in the evaporator section 8，Filling filler in the evaporation tube 11，Described filler material selection ceramic material，Described filler is Pall ring，The lower section of the lower perforated plate 12 is provided with gripper shoe 18，Multiple holes are provided with the gripper shoe 18，Diameter of the diameter in the hole less than filler in evaporation tube 11，A diameter of 3mm in the hole.The housing of the evaporator section 8 is provided with heating steam inlet 13 and condensate outlet 14, the housing of liquid storage section 9 is provided with auxiliary steam entrance 15, the auxiliary steam is steam, the evaporator section 8 is fixedly connected with liquid storage section 9 using flange, the gripper shoe 18 is located in the middle of flange connection, the gripper shoe 18 is in close contact by evaporator section 8 with the lower perforated plate 12 of evaporator section 8 with the adpting flange of liquid storage section 9, by the adpting flange for dismantling evaporator section 8 and liquid storage section 9, gripper shoe 18 and lower perforated plate 12 can be unclamped, in order to dismounting and change filler.Material distribution section 7 built with filler, described filler can in evaporation tube 11 filler it is consistent.The height of the material distribution section 7 is 1.5 times that material is distributed the diameter of section 7.The height of the gas-liquid separation section 6 is 1.5 times of the diameter of gas-liquid separation section 6.The height of the liquid storage section 9 is 2 times of the diameter of liquid storage section 9.
The present invention also provides a kind of method of process waste water, and using said apparatus, methods described includes：
Using waste water preheater 2, it is used to process raw material waste water 1 and condensate 20, and raw material waste water 1 and condensate 20 are exchanged heat in waste water preheater 2, obtain it is preheated after raw material waste water 3 and cooling condensate 16；
Using processor 6, it is used to process the raw material waste water 3 come after waste water preheater preheating of hanging oneself, and the 2nd stream 14 and condensate 17 of the 1st stream 7, liquid phase of gas phase are obtained after process；
Using vapour compression machine 8, it is used to compress the 1st stream 7 from processor, and the 3rd stream 9 of gas phase is obtained after process, and the 3rd stream 9 enters fouling device 11, condensate 18 is obtained after cooling as heat source stream；
Using fouling device 11, it is used to receive the 2nd stream 14 and the 3rd stream 9 of vapour compression machine from processor, the 5th stream 15 and condensate 18 of the 4th stream 4, liquid phase of gas phase are obtained after process, described 4th stream, 4 points of two-way, wherein 12 processor is entered through the heating steam inlet of processor all the way, the auxiliary steam entrance of the Jing processors of another road 13 enters processor；
Using apparatus for collecting condensed water 19, it is used for the condensate 18 of the condensate 17 of receiving processor and fouling device, and the 6th stream 20 of liquid phase is obtained after process, and the 6th stream 20 enters waste water preheater 2.
Embodiment 1
Using the device described in Fig. 1, using the device described in Fig. 2, propylene is fine to produce the main fine macromolecular compound containing propylene in waste water to the processor, kelvin nitrogen content is 4050mg/L in the fine waste water of propylene, waste water evaporation boiling point is 100 DEG C, when waste water evaporation more than 80%, the easy fouling of concentrate, coking.Raw material wastewater treatment capacity is 15t/h, and normal temperature waste water is preheated to 99 DEG C through preheater 2, and the concentrate with 104 DEG C mixes, in evaporimeter 6A.Raw material waste water is 3 with backflow concentrate wastewater flow ratio:1.Evaporating temperature of the waste water in evaporimeter 6A is 104 DEG C, and the compression ratio of vapour compression machine 9 is 1.5, and steam of the compressed steam as evaporation thermal source and the vapour volume amount ratio as carrier gas are 4:1.Condensate temperature Jing after heat recovery is 45 DEG C or so.Condensate-water polishing amount is 11t/h.
Claims (26)
1. it is a kind of process waste water device, the processing meanss include waste water preheater, processor, vapour compression machine, apparatus for collecting condensed water and fouling device；Wherein wastewater feed pipeline Jing waste water preheater is connected with the charging aperture of processor, the concentrated solution outlet Jing pipelines of processor are connected with the feed(raw material)inlet of fouling device, the condensate outlet Jing pipelines of processor are connected with apparatus for collecting condensed water, the gas vent Jing pipelines of processor are connected with the entrance of vapour compression machine, the outlet Jing pipelines of vapour compression machine are connected with the heat source stream entrance of fouling device, the condensation water outlet Jing pipelines of fouling device are connected with apparatus for collecting condensed water, steam outlet Jing pipelines at the top of fouling device are connected respectively with the heating steam inlet and auxiliary steam entrance of processor, the floss hole of apparatus for collecting condensed water is connected with waste water preheater, the concentrate floss hole Jing pipelines of fouling device are connected with the charging aperture of processor, the dirt floss hole of fouling device bottom is by the outer carrying device of pipeline.
2. according to the device described in claim 1, it is characterised in that：Supplementary steam pipe line is set in the outlet of the vapour compression machine and the heat source stream entrance connecting pipeline of fouling device.
3. according to the device described in claim 1, it is characterised in that：The waste water preheater can adopt shell-and-tube heat exchanger, heat-pipe heat exchanger, plate type heat exchanger or lamella heat exchanger.
4. according to the device described in claim 1, it is characterised in that：The processor includes upper cover, housing, low head, and the upper cover is provided with gas vent, and the low head is provided with concentrated solution outlet, and the housing includes vapor-liquid separation section, material distribution section, evaporator section and liquid storage section according to liquid phase material flow direction；Housing above the material distribution section is provided with charging aperture, the evaporator section includes upper perforated plate, evaporation tube, lower perforated plate and gripper shoe, the upper perforated plate and lower perforated plate are fixed on the inwall of housing, the evaporation tube is through upper perforated plate and lower perforated plate, the evaporation tube is vertically arranged in the evaporator section, gripper shoe is provided with below the lower perforated plate, the lower perforated plate is fixedly connected with gripper shoe, the housing of the evaporator section is provided with heating steam inlet and condensate outlet, and the housing of the liquid storage section is provided with auxiliary steam entrance.
5. according to the device described in claim 4, it is characterised in that：Demisting facility is provided with the gas-liquid separation section, the demisting facility is any one in woven wire demister, fiber mist eliminator and deflection plate demister.
6. according to the device described in claim 4, it is characterised in that：The charging aperture is connected with feed pipe, and on the feed pipe feed distributor is connected with.
7. according to the device described in claim 4, it is characterised in that：Filler is filled with the evaporation tube, described filler is ceramic material or metal material, preferably ceramic material.
8. according to the device described in claim 4, it is characterised in that：It is bar-shaped that described filler is shaped as Raschig ring, Pall ring, cascade ring, cellular or wolf's fang.
9. according to the device described in claim 4, it is characterised in that：The evaporator section is fixedly connected with liquid storage section, is connected using flange, and the gripper shoe is located in the middle of flange connection.
10. according to the device described in claim 4, it is characterised in that：Multiple holes are provided with the gripper shoe, the diameter in the hole is less than the diameter of filler in evaporation tube.
11. according to the device described in claim 4, it is characterised in that：The material is distributed section built with filler, and described filler is consistent with filler in evaporation tube.
12. according to the device described in claim 4, it is characterised in that：The height of the material distribution section is 1 ~ 1.5 times that material is distributed section diameter, and the height of the gas-liquid separation section is 1 ~ 1.5 times of gas-liquid separation section diameter, and the height of the liquid storage section is 1 ~ 2 times of liquid storage section diameter.
13. according to the device described in claim 4, it is characterised in that：Described vapour compression machine is using the one kind in centrifugal compressor, screw compressor, reciprocating compressor, centrifugal high pressure fan.
A kind of 14. methods for processing waste water, using the device described in any claim in claim 1-13, methods described includes：
Using waste water preheater, it is used to process raw material waste water and condensate, and raw material waste water and condensate are exchanged heat in waste water preheater, obtain it is preheated after raw material waste water and cooling condensate；
Using processor, it is used to process the raw material waste water come after waste water preheater preheating of hanging oneself, and the 1st stream, the 2nd stream of liquid phase and the condensate of gas phase are obtained after process；
Using vapour compression machine, it is used to compress the 1st stream from processor, and the 3rd stream of gas phase is obtained after process, and the 3rd stream enters fouling device, condensate is obtained after cooling as heat source stream；
Using fouling device, it is used to receive the 2nd stream and the 3rd stream of vapour compression machine from processor, the 4th stream, the 5th stream of liquid phase and the condensate of gas phase are obtained after process, the 4th stream enters processor respectively through the heating steam inlet and auxiliary steam entrance of processor；
Using apparatus for collecting condensed water, it is used for the condensate of the condensate of receiving processor and fouling device, and the 6th stream of liquid phase is obtained after process, and the 6th stream enters waste water preheater.
15. in accordance with the method for claim 14, it is characterised in that：Raw material waste water in waste water preheater by being preheated to 90 DEG C～102 DEG C with condensate, preferably 95 DEG C～100 DEG C, subsequently in processor.
16. in accordance with the method for claim 14, it is characterised in that：Logarithm heat transfer temperature difference in the processor between steam and waste water be 3 DEG C～10 DEG C, preferably 4 DEG C～8 DEG C, meanwhile, in the processor waste water evaporation vaporization rate be 5%～50%, preferably 10%～40%.
17. in accordance with the method for claim 14, it is characterised in that：The fouling device obtains the 4th stream of gas phase and enters processor respectively through the heating steam inlet and auxiliary steam entrance of processor after processing, wherein to enter the 4th stream consumption of processor and the volume ratio of the 4th stream consumption for entering through auxiliary steam entrance processor be 1～10 through the heating steam inlet of processor:1.
18. in accordance with the method for claim 14, it is characterised in that：The processor includes upper cover, housing, low head, and the upper cover is provided with gas vent, and the low head is provided with concentrated solution outlet, and the housing includes vapor-liquid separation section, material distribution section, evaporator section and liquid storage section according to liquid phase material flow direction；Housing above the material distribution section is provided with charging aperture, the evaporator section includes upper perforated plate, evaporation tube, lower perforated plate and gripper shoe, the upper perforated plate and lower perforated plate are fixed on the inwall of housing, the evaporation tube is through upper perforated plate and lower perforated plate, the evaporation tube is vertically arranged in the evaporator section, gripper shoe is provided with below the lower perforated plate, the lower perforated plate is fixedly connected with gripper shoe, the housing of the evaporator section is provided with heating steam inlet and condensate outlet, and the housing of the liquid storage section is provided with auxiliary steam entrance.
19. in accordance with the method for claim 18, it is characterised in that：Demisting facility is provided with the gas-liquid separation section, the demisting facility is any one in woven wire demister, fiber mist eliminator and deflection plate demister.
20. in accordance with the method for claim 18, it is characterised in that：The charging aperture is connected with feed pipe, and on the feed pipe feed distributor is connected with.
21. in accordance with the method for claim 18, it is characterised in that：Filler is filled with the evaporation tube, described filler is ceramic material or metal material, preferably ceramic material.
22. in accordance with the method for claim 18, it is characterised in that：It is bar-shaped that described filler is shaped as Raschig ring, Pall ring, cascade ring, cellular or wolf's fang.
23. in accordance with the method for claim 18, it is characterised in that：The evaporator section is fixedly connected with liquid storage section, is connected using flange, and the gripper shoe is located in the middle of flange connection.
24. in accordance with the method for claim 18, it is characterised in that：Multiple holes are provided with the gripper shoe, the diameter in the hole is less than the diameter of filler in evaporation tube.
25. in accordance with the method for claim 18, it is characterised in that：The material is distributed section built with filler, and described filler is consistent with filler in evaporation tube.
26. in accordance with the method for claim 18, it is characterised in that：The height of the material distribution section is 1 ~ 1.5 times that material is distributed section diameter, and the height of the gas-liquid separation section is 1 ~ 1.5 times of gas-liquid separation section diameter, and the height of the liquid storage section is 1 ~ 2 times of liquid storage section diameter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730123.5A CN106630337B (en) | 2015-11-02 | 2015-11-02 | Method and device for treating wastewater |
Applications Claiming Priority (1)
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