CN217708926U - Desulfurization waste water evaporation plant - Google Patents
Desulfurization waste water evaporation plant Download PDFInfo
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- CN217708926U CN217708926U CN202123121786.7U CN202123121786U CN217708926U CN 217708926 U CN217708926 U CN 217708926U CN 202123121786 U CN202123121786 U CN 202123121786U CN 217708926 U CN217708926 U CN 217708926U
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Abstract
The utility model discloses a desulfurization waste water evaporation device, which comprises an evaporator body, an evaporation heat exchange assembly, a cleaning assembly and a discharging assembly, wherein the evaporator body is horizontally and transversely arranged, and the evaporator body is provided with a waste water inlet, an exhaust port, a steam inlet and a waste material outlet which are arranged on the evaporator body; the evaporation heat exchange assembly comprises an air inlet assembly, a condensed water outlet assembly and a hollow heat exchange plate assembly communicated with the air inlet assembly and the condensed water outlet assembly; the hollow heat exchange plate component comprises a plurality of groups of heat exchange plates which are arranged in parallel; a remaining through hole is formed in the heat exchange plate; the cleaning component comprises a rotating shaft penetrating through the hollow heat exchange plate component and rotating shaft supporting and sealing components arranged on two sides of the evaporator body; the rotating shaft is provided with a plurality of brushes which are distributed in parallel; a brush used for cleaning the surface of the heat exchange plate is arranged between two adjacent heat exchange plates; the discharging assembly is arranged at the bottom of the evaporator body and comprises a spiral conveying blade and a blade driving device; the tail end of the spiral conveying blade is provided with a waste outlet.
Description
Technical Field
The invention relates to the field of evaporators, in particular to an evaporation system for evaporating desulfurization wastewater.
Background
Because of the particularity of high hardness, high suspended matter and more heavy metal particles in the desulfurization wastewater, the problem of scaling of a heat exchange surface often occurs in the conventional desulfurization wastewater evaporation concentration device, and a forced circulation evaporator and a scraper evaporator are usually adopted; the forced circulation evaporator needs to be provided with a high-power circulating pump, and has the defects of high power consumption, easy abrasion of pump blades, easy blockage of long pipelines and the like.
The existing waste water evaporator generally lacks a continuous descaling device, so that the heat transfer coefficient of the evaporator is reduced, the evaporation capacity is reduced, and in severe cases, dirt is bridged among heat exchange elements, so that the production is influenced and even the production is stopped. The existing evaporator adopts a mode that a main shaft drives a disk to achieve the purpose of accelerating evaporation, and the disk has large mass, large main shaft rotating torque and high energy consumption.
In order to continuously and stably operate, the conventional waste water evaporator needs to regularly remove dirt on the surface of a heat exchange element, and the traditional descaling method adopted by the evaporator is generally to stop the machine for chemical cleaning or to scrape the dirt by adopting a mechanical means.
Because the chemical cleaning needs frequent periodic shutdown cleaning, on one hand, the production capacity is reduced, the cost of cleaning chemicals is increased, time and labor are wasted, and meanwhile, the chemicals can cause corrosion to equipment.
Scraping by mechanical means, such as application number CN201910225173.6, with a patent name: a device for treating high-salt wastewater by using a rotary membrane evaporator comprises the rotary membrane evaporator, a steam compressor and a heat exchanger, wherein the steam compressor and the heat exchanger are connected with the rotary membrane evaporator, the rotary membrane evaporator comprises a gas-liquid separation section, a distributor, an evaporation concentration section, a gas-liquid separator arranged in the gas-liquid separation section, a main shaft vertically penetrating through the whole rotary membrane evaporator, a magnetic scraper arranged at the lower section of the main shaft and a bottom scraper arranged at the bottom end of the main shaft, the magnetic scraper and the bottom scraper are both positioned in the evaporation concentration section, a steam outlet arranged on the rotary membrane evaporator and a steam inlet arranged on the evaporation concentration section are respectively connected with the steam compressor, and a high-salt wastewater inlet on the distributor is connected with the heat exchanger; the main shaft is provided with a scraper and a scraper supporting rod, wherein the rotary film evaporator is vertical, when the scraper is arranged to clean the inner wall of the rotary film evaporator, the scraper supporting rod for supporting the scraper must be arranged, and the arrangement of the scraper supporting rod can increase the stress of the main shaft, so that a thicker main shaft must be designed or the driving power of the main shaft must be increased, which inevitably increases the energy consumption of equipment;
secondly, the shaft part of the vertically arranged waste water evaporator has poor sealing effect, so that the waste water is leaked, and the risk of environmental pollution is caused;
secondly, after the steam heats the inner shell, the contact area of the high-salinity wastewater and the heated inner shell is small, so that the working efficiency of the device is low.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the invention aims to solve the problems of complex chip clamping and large device volume in the prior art, and provides a desulfurization wastewater evaporation device.
The technical scheme of the invention is as follows: the desulfurization wastewater evaporation device comprises an evaporator body, a waste water inlet, an exhaust port, a steam inlet and a waste outlet, wherein the evaporator body is horizontally and transversely arranged, and an evaporation heat exchange assembly, a cleaning assembly and a discharging assembly are arranged in the evaporator body;
the evaporation heat exchange assembly comprises an air inlet assembly, a condensed water outlet assembly and a hollow heat exchange plate assembly communicated with the air inlet assembly and the condensed water outlet assembly; the hollow heat exchange plate component comprises a plurality of groups of heat exchange plates which are arranged in parallel; a remaining through hole is formed in the heat exchange plate;
the cleaning assembly comprises a rotating shaft penetrating through the hollow heat exchange plate assembly and rotating shaft supporting and sealing assemblies arranged on two sides of the evaporator body;
the rotating shaft is provided with a plurality of brushes which are distributed in parallel; a brush used for cleaning the surface of the heat exchange plate is arranged between the two adjacent heat exchange plates;
the discharge assembly is arranged at the bottom of the evaporator body and comprises a spiral conveying blade and a blade driving device; the tail end of the spiral conveying blade is provided with the waste outlet.
Further, the rotating shaft is driven by the rotating shaft driving device to rotate clockwise; a sealing assembly is arranged between the rotating shaft and the rotating shaft supporting sealing assembly; the seal assembly comprises a threaded seal assembly; the left side of the rotating shaft of the thread sealing assembly is provided with left-handed threads, and the right side of the rotating shaft is provided with right-handed threads.
Further, the rotating shaft is driven by the rotating shaft driving device to rotate along the counterclockwise direction; a sealing assembly is arranged between the rotating shaft and the rotating shaft supporting and sealing assembly; the seal assembly comprises a threaded seal assembly; the thread sealing assembly comprises a right-handed thread arranged on the left side of the rotating shaft and a left-handed thread arranged on the right side of the rotating shaft.
Further, the rotating shaft supporting and sealing assembly comprises a fixing bracket and a sealing ring fixing plate which are attached to the evaporator body; an annular extension flange is arranged on one side, away from the evaporator body, of the fixing support, and an annular sealing ring is arranged on the inner wall of the annular extension flange;
the side, away from the evaporator body, of the threaded sealing assembly is provided with the annular sealing ring, the static ring sealing ring and the dynamic ring sealing ring in sequence;
one end of the sealing ring fixing plate is connected to the fixing support, and the other end of the sealing ring fixing plate is connected to the static ring sealing ring, so that the static ring sealing ring provides support.
Furthermore, in the circumferential direction of the rotating shaft, the plurality of parallel hairbrushes are uniformly distributed on the rotating shaft along the circumferential direction.
Furthermore, an included angle between two adjacent brushes is 180 degrees.
Furthermore, the brush is made of nylon materials and can be detachably fixed on the rotating shaft.
Compared with the prior art, the invention has the beneficial effects that:
the method comprises the following steps that a horizontal evaporator is adopted, and an evaporation heat exchange assembly is arranged in the horizontal evaporator and comprises a gas inlet assembly, a condensed water outlet assembly and a hollow heat exchange plate assembly communicated with the gas inlet assembly and the condensed water outlet assembly; the hollow heat exchange plate component comprises a plurality of groups of heat exchange plates which are arranged in parallel, so that the contact area between the heat exchange plates and waste water is greatly increased, and compared with the conventional vertical evaporator, the hollow heat exchange plate component has the advantages of good contact between liquid and a heat transfer surface, large heat exchange area and high heat transfer coefficient; meanwhile, due to the horizontal distribution, the spiral conveying blades are arranged at the bottom and transversely penetrate through the horizontal evaporator, so that liquid in the evaporator can be stirred while waste is discharged, and compared with the conventional vertical evaporator, stirring parts are saved;
secondly, on this device basis, set up the brush on the main shaft, wherein brush and heat transfer dish direct contact, the surface of two heat transfer dishes can be cleaned to a brush, and work efficiency is high, and does not have the unnecessary annex of bracing piece, scraper blade in any similar current design for the main shaft can be compared current evaporimeter main shaft diameter thinner, and the consumption is lower. Meanwhile, the main shaft seal adopts reverse threads, so that the effect of driving desulfurization wastewater back to the interior of the evaporator is achieved, the abrasion of the mechanical seal can be effectively relieved, and the operation period of the equipment is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a specific structure of an evaporation heat exchange assembly of the present invention;
FIG. 3 is a schematic view of the construction of the spindle bearing assembly of the present invention;
FIG. 4 is a schematic view of a right-handed thread structure on the right side of the rotating shaft when the rotating shaft is rotated clockwise in the present invention.
Detailed Description
For the understanding of the present invention, the following detailed description of the present invention is given with reference to the accompanying drawings, which are provided for illustration purposes only and are not intended to limit the scope of the present invention.
The invention relates to a desulfurization waste water evaporation device, which comprises an evaporator body 1, and a waste water inlet 11, an exhaust port 12, a steam inlet 13 and a waste outlet 14 which are arranged on the evaporator body 1, wherein the evaporator body 1 is horizontally and transversely arranged, and an evaporation heat exchange assembly, a cleaning assembly and a discharging assembly are arranged in the evaporator body 1;
the evaporation heat exchange assembly comprises an air inlet assembly 21, a condensed water outlet assembly 22 and a hollow heat exchange plate assembly 3 communicated with the air inlet assembly 21 and the condensed water outlet assembly 22; the hollow heat exchange plate component 3 comprises a plurality of groups of heat exchange plates 30 which are arranged in parallel; the heat exchange plate 30 is provided with a reserved through hole 31;
the cleaning component comprises a rotating shaft 4 penetrating through the hollow heat exchange disc component 3 and rotating shaft supporting and sealing components 5 arranged at two sides of the evaporator body 1;
the rotating shaft 4 is provided with a plurality of brushes 41 which are distributed in parallel; a brush 41 which can clean the surface of the heat exchange plate 30 is arranged between two adjacent heat exchange plates 30; in the circumferential direction of the rotating shaft 4, the included angle between two adjacent brushes 41 is 180 degrees. Wherein, the brush 41 is made of nylon material and is detachably fixed on the rotating shaft 4.
The discharging component is arranged at the bottom of the evaporator body 1 and comprises a spiral conveying blade and a blade driving device; the end of the screw conveyor blade is provided with a waste outlet 14.
The rotating shaft 4 is driven by the rotating shaft driving device to rotate clockwise; a sealing component 6 is arranged between the rotating shaft 4 and the rotating shaft supporting sealing component 5; the seal assembly 6 comprises a threaded seal assembly 61; the left side of the rotating shaft 4 of the thread sealing component 61 is provided with left-hand threads, and the right side of the rotating shaft is provided with right-hand threads.
If the rotating shaft 4 is driven by the rotating shaft driving device, the rotating shaft rotates along the anticlockwise direction; the thread seal assembly 61 includes a right-hand thread disposed on the left side of the shaft and a left-hand thread disposed on the right side of the shaft.
The rotating shaft supporting and sealing assembly 5 comprises a fixing bracket 50 attached to the evaporator body 1 and a sealing ring fixing plate 54; an annular extension flange 500 is arranged on one side of the fixed bracket 50, which is far away from the evaporator body 1, and an annular sealing ring 53 is arranged on the inner wall of the annular extension flange 500;
one side of the thread sealing component 61, which is far away from the evaporator body 1, is provided with an annular sealing ring 53, a static ring sealing ring 51 and a dynamic ring sealing ring 52 in sequence;
one end of the sealing ring fixing plate 54 is connected to the fixing bracket 50, and the other end is connected to the stationary sealing ring 51 to support the stationary sealing ring 51.
The device comprises the following concrete implementation steps: the evaporator main shaft 4 is driven by a motor reducer, the waste water raw water is sent into the evaporator body 1 from the waste water inlet 11, and the evaporated waste water steam is discharged from the exhaust port 12. The low-grade steam generated by the waste heat boiler is used as an evaporator heat source, is sent into a steam inlet of the air inlet assembly 21 through the steam inlet 13, is conveyed into each heat exchange disc 30 connected with the air inlet assembly 21 through the air inlet assembly 21, and heats the waste water of the evaporator body 1.
The condensed water outlet assembly 22 is arranged below the air inlet assembly 21 and the heat exchange discs 30, condensed water generated after steam cooling in the communicated heat exchange discs 30 is discharged through a steam condensed water outlet of the condensed water outlet assembly 22, and concentrated wastewater is discharged from the waste outlet 14 under the stirring action through spiral conveying blades at the bottom of the evaporator body 1.
The brush 41 is arranged between the two heat exchange disks 30, the brush 41 can be fixed on the rotating shaft 4 by adopting a fixing bolt, dirt on the surfaces of the heat exchange disks can be removed in time, and meanwhile, fluid on the surfaces of the disks is disturbed, so that the heat transfer effect is enhanced.
In the main shaft 4 rotation working process, the reverse screw thread on the right side pushes solid materials leftwards along with the rotation of the main shaft 4 by the screw thread sealing component 61, so that particles are prevented from entering the filler, and the wear of the filler is avoided. The left thread direction and the right thread direction are opposite, and the left thread direction and the right thread direction also play a role in driving desulfurization wastewater to return to the interior of the evaporator, so that impurities are prevented from entering the annular sealing ring 53, the static ring sealing ring 51 and the dynamic ring sealing ring 52.
The method comprises the following steps that a horizontal evaporator is adopted, and an evaporation heat exchange assembly is arranged in the horizontal evaporator and comprises an air inlet assembly 21, a condensed water outlet assembly 22 and a hollow heat exchange plate assembly 3 communicated with the air inlet assembly 21 and the condensed water outlet assembly 22; the hollow heat exchange plate component 3 comprises a plurality of groups of heat exchange plates 30 which are arranged in parallel, so that the contact area between the heat exchange plates and waste water is greatly increased, and compared with the conventional vertical evaporator, the hollow heat exchange plate component has the advantages of good contact between liquid and a heat transfer surface, large heat exchange area and high heat transfer coefficient; meanwhile, due to the horizontal distribution, the spiral conveying blades are arranged at the bottom and transversely penetrate through the horizontal evaporator, so that liquid in the evaporator can be stirred while waste is discharged, and compared with the conventional vertical evaporator, stirring parts are saved;
secondly, on this device basis, set up the brush on the main shaft, wherein brush and heat transfer dish 30 direct contact, the surface of two heat transfer dishes 30 can be cleaned to a brush, and work efficiency is high, and does not have the unnecessary annex of bracing piece, scraper blade in any similar current design for the main shaft can compare current evaporimeter main shaft diameter thinner, and the consumption is lower.
The foregoing detailed description is given for clearness of understanding only, and no unnecessary limitations are to be understood therefrom, for the purpose of illustrating the technical concept and structural features of the invention, for the purpose of providing a thorough understanding of the invention.
Claims (7)
1. The utility model provides a desulfurization waste water evaporation plant, includes that evaporimeter body (1) and setting are in waste water import (11), gas vent (12), steam inlet (13) and waste outlet (14) on the evaporimeter body (1), its characterized in that: the evaporator body (1) is horizontally and transversely arranged, and an evaporation heat exchange assembly, a cleaning assembly and a discharging assembly are arranged in the evaporator body (1);
the evaporation heat exchange assembly comprises an air inlet assembly (21), a condensed water outlet assembly (22) and a hollow heat exchange plate assembly (3) communicated with the air inlet assembly (21) and the condensed water outlet assembly (22); the hollow heat exchange plate component (3) comprises a plurality of groups of heat exchange plates (30) which are arranged in parallel; a retention through hole (31) is formed in the heat exchange plate (30);
the cleaning assembly comprises a rotating shaft (4) penetrating through the hollow heat exchange plate assembly (3) and rotating shaft supporting and sealing assemblies (5) arranged on two sides of the evaporator body (1);
a plurality of brushes (41) which are distributed in parallel are arranged on the rotating shaft (4); a brush (41) used for cleaning the surface of the heat exchange disc (30) is arranged between two adjacent heat exchange discs (30);
the discharge assembly is arranged at the bottom of the evaporator body (1) and comprises a spiral conveying blade and a blade driving device; the tail end of the spiral conveying blade is provided with the waste outlet (14).
2. The desulfurization waste water evaporation apparatus of claim 1, wherein: the rotating shaft (4) is driven by the rotating shaft driving device to rotate clockwise; a sealing component (6) is arranged between the rotating shaft (4) and the rotating shaft supporting sealing component (5); the seal assembly (6) comprises a threaded seal assembly (61); the thread sealing assembly (61) is characterized in that left-handed threads are arranged on the left side of the rotating shaft (4), and right-handed threads are arranged on the right side of the rotating shaft.
3. The desulfurization waste water evaporation apparatus of claim 1, wherein: the rotating shaft (4) is driven by the rotating shaft driving device to rotate along the anticlockwise direction; a sealing assembly (6) is arranged between the rotating shaft (4) and the rotating shaft supporting sealing assembly (5); the seal assembly (6) comprises a threaded seal assembly (61); the thread seal assembly (61) includes a right-hand thread disposed on the left side of the shaft and a left-hand thread disposed on the right side of the shaft.
4. The desulfurization waste water evaporation apparatus of claim 3, wherein: the rotating shaft supporting and sealing assembly (5) comprises a fixing support (50) attached to the evaporator body (1) and a sealing ring fixing plate (54); an annular extension flange (500) is arranged on one side, away from the evaporator body (1), of the fixing support (50), and an annular sealing ring (53) is arranged on the inner wall of the annular extension flange (500);
the side, away from the evaporator body (1), of the threaded sealing assembly (61) is provided with the annular sealing ring (53), the static ring sealing ring (51) and the moving ring sealing ring (52) in sequence;
one end of the sealing ring fixing plate (54) is connected to the fixing support (50), and the other end of the sealing ring fixing plate is connected to the static ring sealing ring (51) to support the static ring sealing ring (51).
5. The desulfurization waste water evaporation apparatus of claim 1, wherein: in the circumferential direction of the rotating shaft (4), the plurality of brushes (41) distributed in parallel are uniformly distributed on the rotating shaft (4) along the circumferential direction.
6. The desulfurization waste water evaporation apparatus of claim 5, wherein: an included angle between two adjacent hairbrushes (41) is 180 degrees.
7. The desulfurization waste water evaporation apparatus of any one of claims 1 to 6, wherein: the brush (41) is made of nylon and is detachably fixed on the rotating shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123121786.7U CN217708926U (en) | 2021-12-10 | 2021-12-10 | Desulfurization waste water evaporation plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123121786.7U CN217708926U (en) | 2021-12-10 | 2021-12-10 | Desulfurization waste water evaporation plant |
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| CN217708926U true CN217708926U (en) | 2022-11-01 |
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| CN202123121786.7U Active CN217708926U (en) | 2021-12-10 | 2021-12-10 | Desulfurization waste water evaporation plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114229934A (en) * | 2021-12-10 | 2022-03-25 | 东南大学 | Desulfurization waste water evaporation plant |
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2021
- 2021-12-10 CN CN202123121786.7U patent/CN217708926U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114229934A (en) * | 2021-12-10 | 2022-03-25 | 东南大学 | Desulfurization waste water evaporation plant |
| CN114229934B (en) * | 2021-12-10 | 2024-04-30 | 东南大学 | Desulfurization waste water evaporation plant |
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