CN211876809U - High COD contains salt waste water and burns desalination cooling device - Google Patents
High COD contains salt waste water and burns desalination cooling device Download PDFInfo
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- CN211876809U CN211876809U CN202020285873.2U CN202020285873U CN211876809U CN 211876809 U CN211876809 U CN 211876809U CN 202020285873 U CN202020285873 U CN 202020285873U CN 211876809 U CN211876809 U CN 211876809U
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Abstract
The utility model provides a high COD salt-containing wastewater incineration desalting cooling device, which comprises a shell, a cooling component and a desalting component which are arranged inside the shell, a receiving component arranged below the shell, and a gas-liquid separator arranged at the top of the shell, wherein one end of the shell is provided with a flue gas inlet, and the other end is relatively provided with a flue gas outlet; the cooling assembly comprises a plurality of groups of heat exchange discs which are uniformly arranged along the length direction of the shell, a vapor-liquid outlet of each heat exchange disc is connected with a vapor-liquid inlet of the vapor-liquid separator, and a water inlet of each heat exchange disc is connected with a liquid outlet of the vapor-liquid separator through a pipeline; the desalting component comprises scraping plates arranged on the front end face and the rear end face of the heat exchange disc, the scraping plates comprise three blades which are uniformly distributed in the circumferential direction, the bottoms of the blades are connected with the scraping plates, and the scraping plates are in close contact with the disc face of the heat exchange disc. The utility model has the advantages of simple structure and reasonable design, solved fused salt and appeared the problem of blockking up the heat exchanger shell and tube, realized the rapid cooling of high temperature flue gas, effectively retrieved high temperature flue gas heat, byproduct steam simultaneously.
Description
Technical Field
The utility model relates to a high COD contains salt waste water and burns desalination cooling device belongs to sewage treatment technical field.
Background
At present, in the production process in the fields of chemical industry, pharmacy, coking and the like, a large amount of high-COD saline wastewater is usually generated, if the wastewater is directly discharged, serious harm is caused to water and soil, plant death and soil hardening are caused, land desertification is aggravated, and a regional ecosystem is damaged, so that harm reduction treatment must be carried out on the wastewater. The traditional method for treating the high-COD salt-containing wastewater is to burn the wastewater to remove organic matters in the wastewater, and the smoke is cooled and desalted to reach the standard and be discharged.
In the high COD saline wastewater produced by the company, the main components of salt are sodium sulfate and sodium chloride. In the actual wastewater treatment process, after the high-COD salt-containing wastewater is incinerated together with the kettle residue and the natural gas at the temperature of 980 ℃, the incineration tail gas contains molten salt (the melting point of sodium chloride is 801 ℃, the melting point of sodium sulfate is 884 ℃), and the flue gas is condensed into a solid state in a subsequent waste heat boiler and a pipeline and is attached to the inner wall of the pipeline; the solid salt precipitated by condensation in the molten state is different from the solid salt precipitated after evaporative crystallization, and the solid salt precipitated by condensation in the molten state is easy to agglomerate, has no fixed crystal form and high hardness, is very easy to cause the blockage of a waste heat boiler and a pipeline, is very difficult to clean, and greatly increases the equipment maintenance cost and the labor intensity of workers.
Therefore, how to solve the problem of solidification after cooling molten salt becomes a key for solving the problem of restricting the development of the waste water incineration treatment process and expanding the treatment capacity.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a high COD salt-containing waste water incineration desalting cooling device.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a high COD salt-containing wastewater incineration desalting cooling device comprises a shell, a cooling assembly and a desalting assembly which are arranged inside the shell, a receiving assembly arranged below the shell, and a gas-liquid separator arranged at the top of the shell; one end of the shell is provided with a smoke inlet, and the other end of the shell is oppositely provided with a smoke outlet;
the cooling assembly comprises a plurality of groups of heat exchange plates which are uniformly arranged along the length direction of the shell, the heat exchange plates are formed by oppositely buckling two circular arc-shaped plate bodies, and the surfaces of the plate bodies are vertical to the flowing direction of high-temperature flue gas; a vapor-liquid outlet at the top of the heat exchange disc is connected with a vapor-liquid inlet of the vapor-liquid separator through a pipeline, a water inlet at the bottom of the heat exchange disc is connected with a liquid outlet of the vapor-liquid separator through a pipeline, and a cooling medium flows in a cavity of the heat exchange disc; the center of the heat exchange disc is also provided with a shaft hole which is not communicated with the inner cavity of the heat exchange disc;
the desalting assembly comprises a scraper and a driving system for driving the scraper to rotate; the scraping plates are arranged on the front end face and the rear end face of the heat exchange disc, and the centers of the scraping plates are sleeved on the transmission shaft and fixed and can rotate along with the transmission shaft; the scraper blade includes the three blade that uses the transmission shaft as center circumference equipartition, is connected with the scraper bottom the blade, and the quotation in close contact with of scraper and heat transfer dish, scraper lower edge are the arc that matches with the heat transfer dish surface, and the direction of opening a knife edge of scraper is the same with the direction of rotation of transmission shaft.
The utility model discloses a further improvement lies in: the heat exchange disc is provided with a water inlet and three vapor-liquid outlets; the water inlet is connected with a medium conveying pipe through a water inlet branch pipe, and the other end of the medium conveying pipe is connected with a liquid outlet of the vapor-liquid separator; the three vapor-liquid outlets are respectively connected with a vapor-liquid discharge branch pipe, the vapor-liquid branch pipes are connected with a vapor-liquid discharge header pipe in a junction mode, and the other end of the vapor-liquid discharge header pipe is connected with a vapor-liquid inlet of a vapor-liquid separator.
The utility model discloses a further improvement lies in: and a flow regulating valve is arranged on the water inlet branch pipe of each heat exchange plate, a pressure interlock and a temperature interlock are arranged on the vapor-liquid discharge branch pipe of the heat exchange plate, and the water flow entering the heat exchange plate is controlled with the pressure and the temperature of the vapor pipeline in an interlocking manner.
The utility model discloses a further improvement lies in: the heat exchange plates are arranged in a staggered mode along the height direction of the shell, and two adjacent groups of heat exchange plates are located on the upper portion and the lower portion of the shell respectively.
The utility model discloses a further improvement lies in: each group of heat exchange discs is composed of two heat exchange discs arranged side by side, and the sum of the widths of the two heat exchange discs is slightly smaller than the width of the shell.
The utility model discloses a further improvement lies in: the bottom of the vapor-liquid separator is also provided with a water replenishing port, the water replenishing port is connected with a softened water conveying pipeline through a water replenishing pipe, and a water replenishing pump is arranged on the water replenishing pipe.
The utility model discloses a further improvement lies in: and the vapor-liquid separator is also provided with a liquid level interlock, and the liquid level interlock and the water replenishing pump are controlled in an interlocking manner.
The utility model discloses a further improvement lies in: the receiving assembly comprises a conical hopper and a screw conveyer; the top of the conical hopper is communicated with the inner cavity of the shell, the bottom of the conical hopper is provided with a discharge hole which can be opened and closed, the discharge hole is connected with a feed inlet of the screw conveyor, and a cart for transporting solid salt is arranged below the discharge hole of the screw conveyor.
Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:
the utility model provides a high COD contains salt waste water and burns demineralizer, simple structure, reasonable in design have solved the problem that fused salt appeared to block up the heat exchanger shell and tube in the high temperature flue gas, have realized the rapid cooling of high temperature flue gas, have effectively retrieved high temperature flue gas heat simultaneously, and the by-product 0.4MPa steam is about 1.5t/h when effectively cooling for the flue gas.
When the original treatment device is used for exchanging heat through the vertical circulating water heat exchanger, no energy is recovered, and much heat is wasted. The utility model adopts the arc-shaped heat exchange plate, the heat exchange area is large, and the heat exchange efficiency is high; the arc-shaped heat exchange plate is matched with a sharp scraper, so that attached solid salt is immediately removed, the heat exchange effect is not influenced due to accumulation on the surface of the heat exchange plate, and the loss of smoke heat is reduced, so that the smoke heat is fully recovered. Because the utility model discloses the heat transfer effect of device is showing to be superior to former processing apparatus, therefore four cooling heat transfer device of deposit room, exhaust-heat boiler, air heat exchanger and half-dry quench tower device among the former processing apparatus of fungible, the quantity and the area of equipment and pipeline that have significantly reduced save the equipment investment.
During the operation of the original treatment device, the desalting is carried out on the circulating water heat exchanger by continuously adopting a manual weight desalting mode (after the high-temperature flue gas passes through the tube pass of the vertical circulating water heat exchanger, the diameter of the heat exchange tube is DN50, the total number of 57 heat exchange tubes is increased by a weight, the 57 tubes are periodically cleaned by gravity respectively to remove salt attached to the tube wall and prolong the operation time), and the workload and the working strength are very high. The device of the utility model obviously reduces the labor intensity of workers, on one hand, the device adopts the automatic control of the central control host, and the automation degree is high; on the other hand, this device is automatic in heat transfer process removes salt, is difficult for condensing at the heat transfer dish outer wall, need not regular manual cleaning desalination again, has reduced maintenance and maintenance.
With the lapse of the operation time, the original treatment device is shut down once a month at least, and the settling chamber, the waste heat boiler and the connecting pipelines thereof are cleaned once, so that the heat exchange and cooling effects can be continuously ensured, which is very troublesome; and frequent furnace shutdown can damage the incinerator and reduce the service life of the incinerator. The utility model discloses the device moves portably, and the heat transfer is parallel with the desalination process, need not additionally blowing out the stove clearance, can realize the mill and contain the serialization of salt waste water and handle, is fit for the extensive use of industrialization more.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the control of the heat exchange plate water inlet and outlet instrument;
FIG. 3 is a left side schematic view of the housing portion;
FIG. 4 is a schematic right side view of the housing portion;
FIG. 5 is a schematic left side view of the interior of the housing;
FIG. 6 is a schematic right view of the interior of the housing;
FIG. 7 is a schematic view showing the structure of a straight squeegee;
FIG. 8 is a schematic view of the structure of the curved squeegee;
FIG. 9 is a schematic view of a curved squeegee configuration;
the solid line in the figure is the pipeline connection relation, and the two-dot chain line is the signal transmission connection relation;
in the figure, 1-shell, 11-flue gas inlet, 12-flue gas outlet, 2-heat exchange disc, 21-water inlet branch pipe, 22-vapor-liquid outlet branch pipe, 23-pressure interlocking, 24-flow regulating valve, 25-temperature interlocking, 31-driving motor, 32-speed reducer, 33-first transmission shaft group, 34-second transmission shaft group, 35-scraping plate, 4-vapor-liquid separator, 41-vapor-liquid outlet header pipe, 42-medium conveying pipe, 43-medium circulating pump, 44-liquid level interlocking, 45-water replenishing pipe, 46-water replenishing pump, 51-conical hopper, 52-observation window, 53-spiral conveyor and 54-cart.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The utility model provides a high COD contains salt waste water and burns desalination cooling device, includes casing 1, cooling module, desalination subassembly, receiving assembly and vapour and liquid separator 4. The cooling assembly and the desalting assembly are arranged inside the shell 1, the cooling assembly is used for cooling the high-temperature flue gas and solidifying and separating out molten salt, and the desalting assembly is used for scraping solid salt condensed on the cooling assembly; the receiving assembly is arranged below the shell 1 and used for receiving scraped solid salt; the gas-liquid separator 4 is disposed above the casing 1, and is configured to provide circulating cooling water for the cooling module and separate steam.
The specific structure of the high COD saline wastewater incineration desalting cooling device is described in detail with reference to the attached drawings.
With respect to the housing 1:
the casing 1 is a rectangular casing 1, one end of the casing is provided with a flue gas inlet 11, the other end of the casing is provided with a flue gas outlet 12 opposite to the flue gas inlet 11, the flue gas inlet 11 is connected with a high-temperature flue gas pipe, and the flue gas outlet 12 is connected with a low-temperature flue gas pipe to form a coherent flue gas circulation path. High-temperature flue gas generated after the high-COD salt-containing wastewater is incinerated enters the shell 1 of the desalting device through the high-temperature flue gas pipe to be cooled, and then is discharged through the low-temperature flue gas pipe and sent to a further post-treatment working section.
The inner side of the shell 1 is covered with a heat insulation layer so as to reduce the heat loss of the smoke heat in the desalination device and reduce the potential safety production hazard. The heat insulating material is selected from high-temperature heat insulating materials with the use temperature of over 1000 ℃, such as inorganic heat insulating materials of ceramics, asbestos and the like, and can not deform and melt after long-term use. Due to the existence of the heat insulation material, the shell 1 can be made of low-grade materials, and only ordinary carbon steel materials are selected, so that the equipment investment is reduced.
With regard to the cooling assembly:
the cooling assembly comprises a plurality of groups of heat exchange discs 2 which are uniformly arranged along the length direction of the shell 1. The heat exchange plate 2 is formed by oppositely buckling two arc-shaped plate bodies, and the surface of each plate body is vertical to the flowing direction of high-temperature flue gas. The heat exchange plate 2 is internally of a cavity structure, cooling medium flows in the cavity and exchanges heat with high-temperature flue gas flowing in the shell 1 through the plate wall.
In this embodiment, the cooling medium selects water, and the specific heat capacity of water is big, can not only cool off the flue gas, and the by-product steam can supply the mill to use simultaneously.
Specifically, each heat exchange plate 2's bottom all sets up the water inlet, the top sets up vapour and liquid export, the water inlet is one, sets up in the bottommost of heat exchange plate 2 lock department, and the vapour and liquid export is three, along the line interval arrangement of the knot of heat exchange plate 2, and wherein the vapour and liquid export that is located the middle sets up at the topmost of heat exchange plate 2. Because the heat exchange area of the heat exchange disc 2 is large, water in the inner cavity absorbs heat and then becomes steam, the volume of the steam expands, and if the water is not conveyed out in time, the pressure in the inner cavity of the heat exchange disc 2 rises; therefore, three vapor-liquid outlets are particularly arranged at the top of the heat exchange plate 2, so that vapor can be output in time.
The water inlet outlet of each heat exchange plate 2 is connected with a water inlet branch pipe 21, and all the water inlet branch pipes 21 are communicated with the output end of the medium conveying pipe 42. The input end of the medium conveying pipe 42 is connected with the liquid outlet of the gas-liquid separator 4; three vapor-liquid outlets of each heat exchange plate 2 are respectively connected with a vapor-liquid discharge branch pipe 22, all the vapor-liquid discharge branch pipes 22 are connected to a vapor-liquid discharge header pipe 41 in a junction manner, and the other end of the vapor-liquid discharge header pipe 41 is connected with a vapor-liquid inlet of the vapor-liquid separator 4. Generally, the vapor-liquid discharge header 41 is two models larger than the vapor-liquid discharge branch 22, for example, DN50 is used for the vapor-liquid discharge branch 22, and DN100 is used for the vapor-liquid discharge header 41, so as to ensure smooth discharge of the vapor in the heat exchange plate.
In order to prevent the heat exchange plates from being lack of water, a flow regulating valve 24 is arranged on a water inlet branch pipe 21 of each heat exchange plate, a pressure interlock 23 and a temperature interlock 25 are arranged on a vapor-liquid discharge branch pipe 22 of each heat exchange plate, the water flow entering the heat exchange plates is interlocked with the pressure and the temperature of a vapor pipeline, and signals are transmitted to a central control host and are controlled by the central control host. When the pressure and the temperature of the vapor-liquid discharge branch pipe 22 rise, and the steam generation amount is proved to be large, the central control host sends a signal to the flow regulating valve 24, so that the water inlet flow is increased; if the pressure and the temperature are lower than the set values, the steam generation amount is small, the cooling water amount required by the heat exchange plate and the following heat exchange plates can be reduced, and the opening degree of the flow regulating valve 24 is automatically reduced through the central control host machine, so that the water inflow is reduced. Along with the flow of flue gas, the temperature of flue gas reduces gradually, and the required heat transfer water yield of heat transfer dish that is located different positions is all inequality, in time adjusts the inflow through pressure interlock 23 and temperature interlock 25, can guarantee actual heat transfer demand, avoids extravagant, and furthest reduces vapour and liquid separator 4's processing pressure simultaneously guarantees the stable by-product of steam.
The pressure interlock 23 may be mounted on any vapor-liquid discharge branch 22, preferably on the vapor-liquid discharge branch 22 to which the topmost vapor-liquid outlet is connected.
The flow regulating valve 24 can be selected from a pneumatic regulating valve or an electric regulating valve, and is determined according to the pipeline configuration condition and the explosion-proof grade of a factory building. Generally, a pneumatic regulating valve is preferably adopted, and the pneumatic regulating valve has high response speed and sensitive response, but needs to be configured with an instrument air source for use.
When the device operates, cooling water flows in the cavity of the heat exchange disc 2, high-temperature smoke enters the shell 1 and then contacts the outer surface of the heat exchange disc 2 to generate heat exchange through the disc wall, the temperature of the high-temperature smoke is reduced and discharged after the high-temperature smoke is subjected to step-by-step heat exchange, the cooling water flowing in the heat exchange disc 2 is heated and heated to generate steam, the steam is sent into a steam pipe network of a factory to be used after being separated by the steam-liquid separator 4, and the separated hot water is driven by the medium circulating pump 43 to return to the water inlet at the bottom of the heat exchange disc 2 again through the medium conveying pipe 42.
Preferably, the groups of heat exchange disks 2 are arranged in a staggered manner along the height direction of the shell 1, and two adjacent groups of heat exchange disks 2 are respectively positioned at the upper part and the lower part of the shell 1. The arrangement can ensure that the high-temperature flue gas is fully contacted with the heat exchange disc 2 for heat exchange to the maximum extent and can avoid generating higher flow resistance.
Preferably, each group of heat exchange discs 2 consists of two heat exchange discs 2 arranged side by side, and the sum of the widths of the two heat exchange discs 2 is slightly smaller than the width of the shell 1, so that the heat exchange area is greatly increased; avoid adopting the too big heat transfer dish 2 of a specification to carry out the heat transfer as far as possible, if the too big cooling water flow that then needs of 2 specifications of heat transfer dish is big, all has higher requirement to water pipe cast and circulating pump model, increases equipment cost, and in addition, the too big heat transfer dish 2 of specification is unfavorable for overhauing.
Preferably, the material of heat exchange plate 2 is the stainless steel that the heat transfer effect is good and difficult rusty, and its inner and outer surfaces all pass through polishing treatment, the incrustation scale clearance of the scraping and the disk body inside of the solidification salt of being convenient for.
In addition, the center of the heat exchange plate 2 is also provided with a shaft hole, the shaft hole penetrates through the plate body of the heat exchange plate 2, and the shaft hole is not communicated with the inner cavity of the heat exchange plate 2, so that mass transfer does not occur.
With respect to the desalination assembly:
the desalination assembly includes a scraper 35 and a drive system for driving the scraper 35 in rotation.
The driving system comprises a driving motor 31, a speed reducer 32 and a transmission shaft, wherein the driving motor 31 and the speed reducer 32 are positioned outside the shell 1, a power output shaft of the driving motor 31 is connected with the speed reducer 32, and a power output end of the speed reducer 32 is connected with the transmission shaft through a chain wheel transmission mechanism; after the driving motor 31 is started, driving power is transmitted to the transmission shaft step by step to drive the transmission shaft to rotate.
The transmission shaft comprises a first transmission shaft group 33 and a second transmission shaft group 34 which are arranged in parallel, and the first transmission shaft group 33 and the second transmission shaft group 34 are driven by a driving system to synchronously rotate. The first transmission shaft set 33 and the second transmission shaft set 34 each include two transmission shafts arranged side by side. The first transmission shaft group 33 is positioned at the upper part of the shell 1, and the two transmission shafts penetrate through shaft holes in the centers of the two rows of heat exchange disks 2 positioned at the upper part of the shell 1; the second transmission shaft group 34 is located at the lower part of the shell 1, and the two transmission shafts penetrate through the shaft holes at the centers of the two rows of heat exchange disks 2 located at the lower part of the shell 1, so that the synchronous desalination of all the heat exchange disks 2 in the shell 1 is realized.
The scraping plates 35 are arranged on the front end face and the rear end face of the heat exchange plate 2, and the centers of the scraping plates are sleeved on the transmission shaft and fixed and can rotate along with the rotation of the transmission shaft. The scraper 35 comprises three blades which are uniformly distributed in the circumferential direction by taking the transmission shaft as the center, the bottoms of the blades are connected with scrapers, the scrapers are in close contact with the disc surface of the heat exchange disc 2, the lower edges of the scrapers are in an arc shape matched with the surface of the heat exchange disc 2, and the edging direction of the scrapers is the same as the rotating direction of the transmission shaft; when the transmission shaft rotates, the scraper 35 drives the scraper to rotate along the disc surface of the heat exchange disc 2, solid salt on the surface of the heat exchange disc 2, which meets condensation, is scraped, and the cleaning and heat transfer effects on the surface of the heat exchange disc 2 are kept. The scraper is connected with the blade through a bolt, and after the scraper is used for a certain time, the blade is passivated, so that a new scraper can be replaced.
The shape of the scraper can be a linear type as shown in fig. 6, an arc type as shown in fig. 7 and a curve type as shown in fig. 8, and can be selected according to the state of the solid salt. Generally, for scraping the solid salt with higher viscosity, it is better to use arc-shaped and curved scrapers, and for scraping the solid salt with lower viscosity, it is better to use straight scrapers. On the heat exchange disc 2 of different groups of the same desalting device, scrapers with different shapes can be selected according to actual requirements, so that the scraping efficiency of the solid salt is ensured to the maximum extent.
With regard to the vapor-liquid separator 4:
the vapor-liquid separator 4 is arranged above the shell 1, the vapor-liquid separator 4 is provided with a vapor-liquid inlet, a liquid outlet, a vapor outlet and a waste liquid outlet, and the vapor-liquid separator 4 is also provided with a liquid level interlock 44.
The steam-liquid inlet is arranged in the middle of the steam-liquid separator 4 and is connected with the steam-liquid discharge header pipe 41, and the steam-liquid mixture generated by the heat exchange plate 2 enters the steam-liquid separator 4 from the middle after being collected by the steam-liquid discharge header pipe 41.
The liquid outlet is arranged at the bottom of the gas-liquid separator 4 and is connected with a medium conveying pipe 42, and the medium conveying pipe 42 is communicated with the water inlets of the heat exchange discs 2 through the water inlet branch pipes 21; a medium circulation pump 43 is provided on the medium delivery pipe 42 to supply circulation power. Liquid obtained after the vapor-liquid mixture is separated is discharged from a liquid outlet and then pumped into each heat exchange plate 2 to be used as cooling water for circulating heat exchange.
The steam outlet is arranged at the top of the steam-liquid separator 4 and is connected to a steam pipe network of a plant area through a pipeline.
And the bottom of the vapor-liquid separator 4 is also provided with a water replenishing port and a waste liquid outlet. The water replenishing port is connected with the softened water conveying pipeline through a water replenishing pipe 45, and a water replenishing pump 46 is arranged on the water replenishing pipe 45. The water replenishing pump 46 is in transmission connection with the liquid level interlock 44 of the vapor-liquid separator 4, when the liquid level interlock 44 monitors that the water amount in the vapor-liquid separator 4 is insufficient, a signal is transmitted to the central control host, the central control host receives the signal and then drives the water replenishing pump 46 to adjust the flow rate, and cold water is replenished into the vapor-liquid separator 4, so that the high-temperature flue gas is fully cooled. And concentrated waste liquid generated after the vapor-liquid separator 4 operates repeatedly is discharged through a waste liquid outlet.
Preferably, the medium circulating pump 43 and the water replenishing pump 46 are both two, and are arranged in parallel, and one is operated for standby.
With respect to the receiving component:
and a receiving assembly for receiving the scraped solid salt and completing conveying is arranged below the shell 1. The receiving assembly comprises a conical hopper 51 and a screw conveyor 53; the top of the conical hopper 51 is communicated with the inner cavity of the shell 1, the bottom of the conical hopper is provided with an openable discharge hole, the discharge hole is connected with a feed inlet of a screw conveyor 53, and a cart 54 for transporting solid salt is arranged below the discharge hole of the screw conveyor 53. The solid salt scraped off by the scraper 35 falls under gravity into the conical hopper 51 for storage; when the salt storage amount reaches a certain degree, the screw conveyor 53 and the discharge port are opened, the solid salt is transferred to the cart 54 by the screw conveyor 53, and then transferred to other storage places by the cart 54.
The top of the conical hopper 51 is fixedly connected with the bottom of the shell 1 through a bolt, and the conical hopper 51 can be detached when the cleaning device is stopped, so that the interior of the hopper body can be thoroughly cleaned. An observation window 52 and an operation window are further arranged on the side wall of the shell 1, the observation window 52 is used for workers to observe the quantity of the solid salt and to discharge the solid salt in time, and the operation window is used for cleaning and dredging when the solid salt is not discharged smoothly and the discharge port is blocked.
The number of the receiving components can be adjusted according to actual conditions. When high temperature flue gas flow is great, the cooling dish quantity is more, casing length is longer, can set up multiunit receiving component in the casing below, for example set up to two sets of in this embodiment. The multiple groups of receiving assemblies can avoid the overstock of solid salt and improve the smoothness of solid salt discharging.
The utility model discloses the PLC controller of well accuse host computer for can write in the procedure, through the operation of each component of program control. For example, the STC89C52 single chip microcomputer is selected, and the specific control mode is not the main body of the present invention, and those skilled in the art can select the single chip microcomputer according to the needs, and will not be described in detail herein.
The utility model discloses equipment should be chooseed for use high temperature resistant corrosion-resistant equipment, for example, heat transfer dish and scraper can be chooseed for use hastelloy or tungsten cobalt carbide, preferably hastelloy C-276, still have good hardness and corrosion resistance under high temperature.
The working principle of the high COD salt-containing wastewater incineration desalting cooling device is as follows:
high-temperature flue gas generated by burning the high-COD salt-containing wastewater enters the shell through the flue gas inlet, meanwhile, hot water serving as a cooling medium enters the inner cavity of the heat exchange disc under the driving of the medium delivery pump, and the flue gas and the heat exchange disc are in contact for heat exchange; after the temperature of the flue gas is reduced, partial molten salt contained in the flue gas is condensed and solidified on the surface of the heat exchange plate, is scraped by a scraper rotating at a high speed and naturally falls into a conical hopper for temporary storage; the flue gas after being cooled step by step is discharged from a flue gas outlet and enters a next treatment section;
hot water in the inner cavity of the heat exchange plate absorbs heat and heats up to generate steam; and the steam-liquid mixture enters a steam-liquid separator for separation, the separated steam is merged into a steam pipe network, and the separated hot water is pumped back to the heat exchange disc for circulation.
Adopt the utility model discloses a high COD contains salt waste water and burns desalination, can fall the temperature of high temperature flue gas to below 200 ℃ by 980 ℃, but the by-product steam is about 1.5t/h simultaneously.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention.
Claims (8)
1. The utility model provides a high COD contains salt waste water and burns desalination cooling device which characterized in that: the device comprises a shell, a cooling assembly and a desalting assembly which are arranged in the shell, a receiving assembly arranged below the shell, and a gas-liquid separator arranged at the top of the shell; one end of the shell is provided with a smoke inlet, and the other end of the shell is oppositely provided with a smoke outlet;
the cooling assembly comprises a plurality of groups of heat exchange plates which are uniformly arranged along the length direction of the shell, the heat exchange plates are formed by oppositely buckling two circular arc-shaped plate bodies, and the surfaces of the plate bodies are vertical to the flowing direction of high-temperature flue gas; a vapor-liquid outlet at the top of the heat exchange disc is connected with a vapor-liquid inlet of the vapor-liquid separator through a pipeline, a water inlet at the bottom of the heat exchange disc is connected with a liquid outlet of the vapor-liquid separator through a pipeline, and a cooling medium flows in a cavity of the heat exchange disc; the center of the heat exchange disc is also provided with a shaft hole which is not communicated with the inner cavity of the heat exchange disc;
the desalting assembly comprises a scraper and a driving system for driving the scraper to rotate; the scraping plates are arranged on the front end face and the rear end face of the heat exchange disc, and the centers of the scraping plates are sleeved on the transmission shaft and fixed and can rotate along with the transmission shaft; the scraper blade includes the three blade that uses the transmission shaft as center circumference equipartition, is connected with the scraper bottom the blade, and the quotation in close contact with of scraper and heat transfer dish, scraper lower edge are the arc that matches with the heat transfer dish surface, and the direction of opening a knife edge of scraper is the same with the direction of rotation of transmission shaft.
2. The device for incinerating, desalting and cooling high COD saline wastewater according to claim 1, is characterized in that: the bottom of the heat exchange disc is provided with a water inlet, and the top of the heat exchange disc is provided with three vapor-liquid outlets; the water inlet is connected with a medium conveying pipe through a water inlet branch pipe, and the other end of the medium conveying pipe is connected with a liquid outlet of the vapor-liquid separator; each vapor-liquid outlet is respectively connected with a vapor-liquid discharge branch pipe, the three vapor-liquid branch pipes are converged and connected with a vapor-liquid discharge main pipe, and the other end of the vapor-liquid discharge main pipe is connected with a vapor-liquid inlet of a vapor-liquid separator.
3. The device for incinerating, desalting and cooling high COD saline wastewater according to claim 2, characterized in that: and a flow regulating valve is arranged on the water inlet branch pipe of each heat exchange plate, a pressure interlock and a temperature interlock are arranged on the vapor-liquid discharge branch pipe of the heat exchange plate, and the water flow entering the heat exchange plate is controlled with the pressure and the temperature of the vapor pipeline in an interlocking manner.
4. The device for incinerating, desalting and cooling high COD saline wastewater according to claim 1, is characterized in that: the heat exchange plates are arranged in a staggered mode along the height direction of the shell, and two adjacent groups of heat exchange plates are located on the upper portion and the lower portion of the shell respectively.
5. The device for incinerating, desalting and cooling high COD saline wastewater according to claim 1, is characterized in that: each group of heat exchange discs is composed of two heat exchange discs arranged side by side, and the sum of the widths of the two heat exchange discs is slightly smaller than the width of the shell.
6. The device for incinerating, desalting and cooling high COD saline wastewater according to claim 1, is characterized in that: the bottom of the vapor-liquid separator is also provided with a water replenishing port, the water replenishing port is connected with a softened water conveying pipeline through a water replenishing pipe, and a water replenishing pump is arranged on the water replenishing pipe.
7. The device for incinerating, desalting and cooling high COD saline wastewater according to claim 6, is characterized in that: and the vapor-liquid separator is also provided with a liquid level interlock, and the liquid level interlock and the water replenishing pump are controlled in an interlocking manner.
8. The device for incinerating, desalting and cooling high COD saline wastewater according to claim 1, is characterized in that: the receiving assembly comprises a conical hopper and a screw conveyer; the top of the conical hopper is communicated with the inner cavity of the shell, the bottom of the conical hopper is provided with a discharge hole which can be opened and closed, the discharge hole is connected with a feed inlet of the screw conveyor, and a cart for transporting solid salt is arranged below the discharge hole of the screw conveyor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020285873.2U CN211876809U (en) | 2020-03-10 | 2020-03-10 | High COD contains salt waste water and burns desalination cooling device |
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| CN202020285873.2U CN211876809U (en) | 2020-03-10 | 2020-03-10 | High COD contains salt waste water and burns desalination cooling device |
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| CN211876809U true CN211876809U (en) | 2020-11-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238259A (en) * | 2020-03-10 | 2020-06-05 | 邢台市茂新化工产品有限公司 | high-COD salt-containing wastewater incineration desalting cooling device and application thereof |
| CN117146281A (en) * | 2023-10-30 | 2023-12-01 | 江苏大恒环境技术有限公司 | Ash discharging device for salt-containing waste liquid incinerator |
-
2020
- 2020-03-10 CN CN202020285873.2U patent/CN211876809U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238259A (en) * | 2020-03-10 | 2020-06-05 | 邢台市茂新化工产品有限公司 | high-COD salt-containing wastewater incineration desalting cooling device and application thereof |
| CN117146281A (en) * | 2023-10-30 | 2023-12-01 | 江苏大恒环境技术有限公司 | Ash discharging device for salt-containing waste liquid incinerator |
| CN117146281B (en) * | 2023-10-30 | 2024-03-05 | 江苏大恒环境技术有限公司 | Ash discharging device for salt-containing waste liquid incinerator |
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Inventor after: Li Xiaofei Inventor after: Geng Xiaochuan Inventor before: Li Xiaofei Inventor before: Geng Xiaochuan |