CN111762831A - Acid-base waste water evaporator - Google Patents
Acid-base waste water evaporator Download PDFInfo
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- CN111762831A CN111762831A CN202010622473.0A CN202010622473A CN111762831A CN 111762831 A CN111762831 A CN 111762831A CN 202010622473 A CN202010622473 A CN 202010622473A CN 111762831 A CN111762831 A CN 111762831A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 152
- 238000005188 flotation Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 25
- 239000002562 thickening agent Substances 0.000 claims description 24
- 239000012452 mother liquor Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 11
- 239000011550 stock solution Substances 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 10
- 239000012141 concentrate Substances 0.000 claims description 7
- 210000003437 trachea Anatomy 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 14
- 230000008020 evaporation Effects 0.000 abstract description 13
- 238000000926 separation method Methods 0.000 abstract description 7
- 230000000087 stabilizing effect Effects 0.000 description 21
- 239000002585 base Substances 0.000 description 15
- 239000011344 liquid material Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000008242 dietary patterns Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses an acid-base wastewater evaporator which comprises a circulating pump, a steam heater, a separator, a condenser, a condensed water tank and a vacuum pump which are sequentially communicated, and further comprises a flotation device, wherein the flotation device is arranged close to the bottom of the separator and is communicated with the separator. Through such design, with turbid liquid jar echelonment design, waste water is squeezed into along tangential direction, and waste water is at turbid liquid jar internal rotation separation, and the evaporation is thorough, and is efficient.
Description
Technical Field
The invention relates to an evaporative crystallizer, in particular to an acid-base wastewater evaporator.
Background
In the acid-base wastewater evaporation process, concentration and separation are realized through a series of matched equipment such as a circulating pump, a steam heater, a separator, a condenser, a condensate tank, a vacuum pump, a thickener, a solid-liquid separator and the like which are communicated with each other, the existing evaporation efficiency is low, and the energy consumption is high. The separation efficiency of the separator is closely related, the separator is usually designed into a cylindrical tank body, the inside of the tank body is in a negative pressure state, heated wastewater is pumped into the tank body and then is subjected to extremely rapid flash evaporation or precipitation, the flow rate of feed liquid is high, and in this case, fine material particles cannot be precipitated and are discharged to a condensation water tank along with evaporated water vapor; the material concentration is not thorough, the discharged condensed water cannot reach the discharge standard, and the utilization rate of the waste water is low.
The prior art urgently needs an acid-base waste water evaporator with high evaporation efficiency and high waste water utilization rate.
Disclosure of Invention
The invention aims to provide an acid-base wastewater evaporator which is high in wastewater utilization rate and high in evaporation efficiency.
In order to realize the technical effects, the technical scheme of the invention is as follows: an acid-base wastewater evaporator comprises a circulating pump (1), a steam heater (2), a separator (3), a condenser (4), a condensed water tank (5) and a vacuum pump (6) which are sequentially communicated, and further comprises a flotation device (7), wherein the flotation device (7) is arranged close to the bottom of the separator (3), the flotation device (7) is communicated with the separator (3), and the acid-base wastewater evaporator is characterized in that the separator (3) comprises a clear liquid tank (3 a) and a turbid liquid tank (3 b) which are sequentially communicated from top to bottom;
the lower part of the turbid liquid tank (3 b) is provided with a turbid liquid feeding taper pipe (3 c), the turbid liquid feeding taper pipe (3 c) is wide at the upper part and narrow at the lower part, the upper end of the turbid liquid feeding taper pipe (3 c) is communicated with the turbid liquid tank (3 b), and the lower end of the turbid liquid feeding taper pipe (3 c) is communicated with the flotation device (7);
the separator feeding port (3 d) is positioned on the side surface of the turbid liquid feeding conical pipe (3 c), and the feeding direction of the separator feeding port (3 d) is tangential to the side wall of the turbid liquid feeding conical pipe (3 c);
the outer diameter of the clear liquid tank (3 a) is larger than that of the turbid liquid tank (3 b), and the clear liquid tank (3 a) is connected and transited with the turbid liquid tank (3 b) through a clear liquid transition taper pipe (3 h) with a wide upper part and a narrow lower part.
Through such design, with turbid liquid jar echelonment design, waste water is squeezed into along tangential direction, and waste water is rotatory in turbid liquid jar separation, and turbid liquid is rotatory to sink, and the clear liquid is rotatory to rise, and when clear liquid rises to the upper portion of turbid liquid jar, because jar body diameter grow, clear liquid rotational speed reduces, smugglies the tiny particle downdeposition in the clear liquid secretly, and a plurality of tiny particle meets the caking grow, sinks with higher speed, and the impurity in the clear liquid reduces, purifies comparatively thoroughly.
Meanwhile, the inner diameter of the clear liquid tank (3 a) is larger, and the surface area of the solution in the clear liquid tank (3 a) is large, so that the solution is rapidly evaporated in a negative pressure environment.
Preferably, a capacity expansion tank (31) is further arranged above the clear liquid tank (3 a), the outer diameter of the capacity expansion tank (31) is larger than that of the clear liquid tank (3 a), and the capacity expansion tank (31) is connected and transited with the clear liquid tank (3 a) through a capacity expansion transition taper pipe (32) which is wide at the upper part and narrow at the lower part.
The side wall of the upper part of the expansion tank (31) is sunken to form a corrugated air bag accommodating groove (33), a corrugated air bag (34) is arranged in the corrugated air bag accommodating groove (33), and the outer edge of the corrugated air bag (34) is clamped with the corrugated air bag accommodating groove (33); the expansion tank (31) upper end is for going up lid (35), upward be provided with gas tube way valve (36) and bleeder line valve (37) on lid (35), gas tube way valve (36) and bleeder line valve (37) all communicate through trachea (38) and ripple gasbag (34), gas tube way valve (36) are connected with the pump, bleeder line valve (37) are connected with the air pump.
Due to the design, the corrugated air bag can be used for inflating and deflating to generate micro waves for the feed liquid, so that the surface area of the surface of the feed liquid is further enlarged, and the evaporation can be further accelerated.
Preferably, the bottom of the flotation device (7) is provided with a concentrated solution outlet (7 a), and the concentrated solution outlet (7 a) is connected with a discharge pump (9). Through such design, also design the clear solution jar for the echelonment, purify the clear solution the secondary.
Preferably, the device also comprises a thickener (10), a centrifuge (11) and a mother liquor tank (12) which are sequentially communicated, and the discharge pump (9) is communicated with the thickener (10) through a concentrated liquor pipeline (13). By means of this design, the concentrate can be continuously pumped out of the flotation cell.
Preferably, a concentrated solution on-off valve (13 a) is provided in the concentrated solution pipe (13), a return pipe (14) is communicated with the concentrated solution pipe (13) between the concentrated solution on-off valve (13 a) and the discharge pump (9), the return pipe (14) is communicated with the turbid liquid tank (3 b), and a return on-off valve (14 a) is provided in the return pipe (14). Through such design, the discharge pump is incessant, can choose to squeeze into the concentrate into stiff ware or turbid liquid jar according to actual conditions, reaches the purpose of protection discharge pump.
Preferably, the return pipeline (14) and the turbid liquid tank (3 b) are connected to a return opening (3 f), and the feeding direction of the return opening (3 f) is tangential to the side wall of the turbid liquid feeding taper pipe (3 c). Through the design, the purposes of purifying, separating and crystallizing the concentrated solution can be achieved.
Preferably, the thickener (10) comprises an upper tank body (1) and a lower tank body (2) communicated with the upper tank body (1), the upper tank body (1) is cylindrical, and an overflow port (11) is formed in the side wall of the upper part of the upper tank body (1); the lower tank body (2) is in a wide-down narrow conical shape, the bottom of the lower tank body (2) is provided with a first discharge port (21), the first discharge port (21) is communicated with a first discharge pipeline (3), the side wall of the upper tank body (1) and/or the lower tank body (2) is provided with a feed inlet, and the feeding direction is tangent to the side wall of the upper tank body (1) and/or the lower tank body (2) at the feed inlet.
Preferably, a mother liquor outlet of the mother liquor tank (12) is connected with a mother liquor pump (15), and the mother liquor pump (15) is communicated with a raw liquor tank pipeline (16); through the design, the mother liquor can be continuously pumped into the raw liquor tank from the mother liquor tank.
The stock solution tank pipeline (16) is provided with a stock solution tank opening and closing valve (16 a), a clear liquid pipeline (17) is communicated with the stock solution tank pipeline (16) between the stock solution tank opening and closing valve (16 a) and the mother liquid pump (15), the clear liquid pipeline (17) is communicated with the clear liquid tank (3 a), and the clear liquid pipeline (17) is provided with a clear liquid opening and closing valve (17 a). Through the design, the mother liquor can be injected into the stock solution pool or the clear solution tank to continue evaporation and purification according to actual conditions.
Preferably, a clear liquid outlet (3 e) is formed in the side wall of the clear liquid tank (3 a), the clear liquid outlet (3 e) is communicated with the circulating pump (1) through a feeding pipeline (8), and a material inlet (8 a) is formed in the feeding pipeline (8). Through the design, the aim of continuously heating, evaporating, crystallizing and purifying the clear liquid in the clear liquid tank can be fulfilled.
The invention has the advantages and beneficial effects that: the acid-base waste water evaporator has a reasonable structure, the separator is designed in a step shape, the heated waste water is driven in the tangential direction, and the waste water rotates in the separator for separation and crystallization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a thickener in embodiment 2 of the invention;
FIG. 3 is a schematic view of a separator in example 3 of the present invention;
fig. 4 is a partially enlarged schematic view of a separator in embodiment 3 of the present invention.
In the figure: 1. a circulation pump; 2. a steam heater; 3. a separator; 3a, a clear liquid tank; 3b, a turbid liquid tank; 3c, a circular truncated cone; 3d, a material inlet of the separator; 3e, a clear liquid outlet, 3f, a reflux port; 3h, a clear liquid transition taper pipe; 4. a condenser; 5. a condensate tank; 6. a vacuum pump; 7. a flotation device; 7a, a concentrated solution outlet; 8. a feeding pipeline; 8a, material inlet; 9. a discharge pump; 10. a thickener; 10a, a thickener feed inlet; 10b, discharging a thick device; 10c, a flow stabilizing ring; 10d, connecting plates; 10e, an overflow port;
11. a centrifuge; 12. a mother liquor tank; 13. a concentrate line; 13a, a concentrated solution opening/closing valve; 14. a return line; 14a, a reflux on-off valve; 15. a mother liquor pump; 16. a stock solution tank pipeline; 16a, an opening/closing valve of the stock solution tank; 17. a clear liquid pipeline; 17a, a clear liquid opening and closing valve.
1z, putting the pot body; 11z, an overflow port; 12z, a second feed port; 2z, putting the tank body down; 21z, a first discharge hole; 22z, a first feed port; 23z, a second discharge hole; 3z, a first discharging pipeline; 31z, a flushing port; 32z, a first control valve; 41z, a first flow stabilizing ring; 42z, a second flow stabilizing ring; 51z, a first connecting plate; 52z, a second connecting plate; 6z, a second discharge pipeline; 61z, second control valve
31. A capacity expansion tank; 32. expanding the volume of the transition taper pipe; 33. a corrugated airbag housing groove; 34 a corrugated balloon; 35, an upper cover body; 36 inflation line valves; 37 a gas release line valve; 38 trachea.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The terms "upper", "lower", "upper" and "lower" are used with reference to the normal use of the dietary pattern for a patient with digestive tract bleeding, and are used merely to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1 to 4:
example 1
The acid-base wastewater evaporator of embodiment 1 comprises a circulating pump 1, a steam heater 2, a separator 3, a condenser 4, a condensed water tank 5, a vacuum pump 6 and a flotation device 7, which are sequentially communicated, wherein the flotation device 7 is communicated with the bottom 3 of the separator, and the separator 3 comprises a clear liquid tank 3a and a turbid liquid tank 3b which are sequentially communicated from top to bottom;
the lower part of the turbid liquid tank 3b is a turbid liquid feeding conical pipe 3c, the turbid liquid feeding conical pipe 3c is wide in upper part and narrow in lower part, the upper end of the turbid liquid feeding conical pipe 3c is communicated with the turbid liquid tank 3b, and the lower end of the turbid liquid feeding conical pipe 3c is communicated with the flotation device 7;
the separator material inlet 3d is positioned on the side surface of the turbid liquid material inlet taper pipe 3c, and the material inlet direction of the separator material inlet 3d is tangent to the side wall of the turbid liquid material inlet taper pipe 3 c;
the outer diameter of the clear liquid tank 3a is larger than that of the turbid liquid tank 3b, and the clear liquid tank 3a is connected and transited with the turbid liquid tank 3b through a clear liquid transition taper pipe 3h with a wide upper part and a narrow lower part.
The bottom of the flotation device 7 is provided with a concentrated solution outlet 7a, and the concentrated solution outlet 7a is connected with a discharge pump 9.
The centrifugal thickener is characterized by further comprising a thickener 10, a centrifugal machine 11 and a mother liquor tank 12 which are sequentially communicated, wherein the discharge pump 9 is communicated with the thickener 10 through a concentrated liquor pipeline 13.
A concentrated liquid opening/closing valve 13a is provided in the concentrated liquid pipe 13, a return pipe 14 is connected to the concentrated liquid pipe 13 between the concentrated liquid opening/closing valve 13a and the discharge pump 9, the return pipe 14 is connected to the turbid liquid tank 3b, and a return opening/closing valve 14a is provided in the return pipe 14.
The backflow pipeline 14 and the turbid liquid tank 3b are connected to a backflow port 3f, and the feeding direction of the backflow port 3f is tangent to the side wall of the turbid liquid feeding taper pipe 3 c.
In actual use, the discharge pump 9 is not stopped normally, and when the slurry does not reach the discharge standard, the slurry needs to be returned to the turbid liquid tank 3b from the return pipeline 14, in which state the concentrate on-off valve 13a is closed and the return on-off valve 14a is opened;
when the slurry reaches the discharge level, the concentrate opening and closing valve 13a is opened, and the return opening and closing valve 14a is closed, and the slurry is discharged to the thickener 10.
The lower part of the thickener 10 is designed in a conical shape, the inner cavity of the thickener 10 is communicated with a feeding hole 10a of the thickener, a stirring paddle 10h is arranged in the thickener, the stirring paddle 10h is driven by a motor, and in the ceaseless stirring process, clear liquid gradually floats upwards and thick slurry is precipitated to the lower part; the upper part of the thickener 10 is provided with an overflow port 11z, and the overflow port 11z is communicated with a mother liquid tank 12.
The bottom end of the thickener 10 is provided with a thickener discharge port 10b, and the thickener discharge port 10b is communicated with the centrifuge 11.
A mother liquor outlet of the mother liquor tank 12 is connected with a mother liquor pump 15, and the mother liquor pump 15 is communicated with a raw liquor tank pipeline 16;
the raw liquid tank pipe 16 is provided with a raw liquid tank opening/closing valve 16a, a clear liquid pipe 17 is connected to the raw liquid tank pipe 16 between the raw liquid tank opening/closing valve 16a and the mother liquid pump 15, the clear liquid pipe 17 is connected to the clear liquid tank 3a, and a clear liquid opening/closing valve 17a is provided to the clear liquid pipe 17.
A clear liquid outlet 3e is formed in the side wall of the clear liquid tank 3a, the clear liquid outlet 3e is communicated with the circulating pump 1 through a feeding pipeline 8, and a material inlet 8a is formed in the feeding pipeline 8.
When the acid-base wastewater is used in the embodiment 1, the acid-base wastewater passes through the evaporation heater 2 under the thrust of the circulating pump 1, and the external connection of the evaporation heater 2 is liquefied and releases heat, so that the acid-base wastewater is heated.
The heated acid-base wastewater enters the separator 3 along the tangential direction of a turbid liquid feeding taper pipe 3c by the thrust of the circulating pump 1, and the acid-base wastewater rapidly rotates in the turbid liquid tank 3 b; under the action of centrifugal force, large crystallized particle materials rotate and sink along the tank wall, uncrystallized liquid materials (carrying fine particles) rotate upwards, and the rotation tends to be stable and mild along with the space enlargement of the turbid liquid tank 3b and the clear liquid tank 3a, so that the fine particles in the uncrystallized liquid materials descend and are condensed into large crystallized particles to continuously sink in the descending process.
The feed liquid which rises to the uppermost end of the clear liquid tank 3a obtains larger evaporation area, and the negative pressure and the high temperature in the separator 3 are quickly flashed to accelerate the concentration. Supernatant gets into circulating pump 1 through feeding tube 8 and continuously is heated, and under the effect of negative pressure, acid-base waste water is constantly evaporated under low boiling point, and the concentration of salt is higher and higher in the waste water, and when the salt super supersaturation state in the waste water, aquatic salt crystal will constantly be appeared, receives the action of gravity, falls into flotation device 7.
The existing separator has no speed reduction process in the rising process of non-crystallized liquid materials (carrying fine particles), the fine particles are wrapped by the steam of the liquid materials and sucked out from the separator to a cooling condensation pipe, the concentration is not thorough, the liquid materials are repeatedly and circularly evaporated, and the condensed water in a condensed water tank 5 has low purity and cannot be reused. The condensation water tank is thorough in condensation, and the condensed water in the condensed water tank 5 is less in impurities and can be used for secondary use.
The discharge pump 9 discharges the concentrated solution of the crystals to the thickener 10, so that the crystals grow to a proper granularity and enter the centrifuge 11 for solid-liquid separation. And (4) packaging the solid, wherein the mother liquor enters a mother liquor tank 12 and enters the separator 3 through a mother liquor pump 15 to be continuously evaporated or go to a raw liquor tank.
Example 2
Further optimizing the embodiment 1, as shown in fig. 2, the thickener 10 includes an upper tank 1z and a lower tank 2z communicated with the upper tank 1z, the upper tank 1z is cylindrical, and an overflow port 11z is formed in the upper side wall of the upper tank 1 z; the lower tank body 2z is in a conical shape with a wide upper part and a narrow lower part, a first discharge hole 21z is formed in the bottom end of the lower tank body 2z, the first discharge hole 21z is communicated with a first discharge pipeline 3z, a first feed port 22z is formed in the side wall of the lower tank body 2z, and the first feed direction and the side wall of the lower tank body 2z are tangent to the first feed port 22 z. The overflow port 11z communicates with the mother liquid tank 12.
A first flow stabilizing ring 41z which is coaxial with the upper tank body 1z is arranged in the cavity of the upper tank body 1z, the upper edge of the first flow stabilizing ring 41z is arranged in a zigzag shape in the circumferential direction, and the first flow stabilizing ring 41z is fixedly connected with the inner wall of the upper tank body 1z through a first connecting plate 51 z; the first connecting plate 51z is a conical ring plate, the upper edge of the first connecting plate 51z is a narrow opening and is connected with the lower edge of the first flow stabilizing ring 41z, and the lower edge of the first connecting plate 51z is a wide opening and is connected with the inner wall of the upper tank body 1z in a sealing and welding mode. The upper tank 41 is isolated by the first stabilizing ring 41z and the first connecting plate 51z, and the clear liquid can only overflow from the upper edge of the first stabilizing ring 41z to the overflow port 11 z.
The overflow port 11z is located above the junction of the first connecting plate 51z and the upper tank 1 z.
The side wall of the upper tank body 1z is provided with a second feeding hole 12z, and the second feeding direction and the side wall of the upper tank body 1z are tangent to the second feeding hole 12 z.
The first discharging pipe 3z is provided with a flushing port 31 z.
The lateral wall of the lower tank body 2z is provided with a second discharge port 23z, and the second discharge port 23z is communicated with the first discharge pipeline 3z through a second discharge pipeline 6 z. The discharge end of the first discharge pipeline 3z is communicated with the second discharge pipeline 6 z;
the first discharge pipe 3z is provided with a first control valve 32z, and the second discharge pipe 6z is provided with a second control valve 61 z. The discharge end of the second discharge pipeline 6z is communicated with a feed inlet of the centrifuge 11.
According to the actual production situation, the first feeding hole 22z or the second feeding hole 12z is selected to be communicated with the concentrated solution pipeline 13 (the discharge end of the concentrated solution pipeline 13 can be connected with the first feeding hole 22z and the second feeding hole 12z through a three-way joint, a control valve is arranged at the connecting position of the first feeding hole 22z and the second feeding hole 12 z), and the concentrated solution rotates in the thickener; the separated acid and alkali containing crystals sink along the pipe wall by using centrifugal force, the clear liquid rises, the clear liquid passes through the first sawtooth-shaped flow stabilizing ring 41z to eliminate the rotating vortex, and the flow velocity is uniform and passes through the overflow port 11 z; according to the actual production situation, the first control valve 32z and the second control valve 61z are opened or closed, so that the thickened concentrated liquid enters the centrifuge by gravity flow.
A second flow stabilizing ring 42z which is coaxial with the upper tank body 1z is arranged in the cavity of the upper tank body 1z, the upper edge of the second flow stabilizing ring 42z is arranged in a zigzag shape in the circumferential direction, the diameter of the second flow stabilizing ring 42z is smaller than that of the first flow stabilizing ring 41z, and the second flow stabilizing ring 42z is positioned 1-2cm below the first flow stabilizing ring 41 z; the second flow stabilizing ring 42z is fixedly connected with the inner wall of the upper tank body 1z through a second connecting plate 52z, the second connecting plate 52z is a conical ring plate, the upper edge of the second connecting plate 52z is a narrow opening and is connected with the lower edge of the second flow stabilizing ring 42z, and the lower edge of the second connecting plate 52z is a wide opening and is fixedly connected with the inner wall of the upper tank body 1z in a sealing manner.
The clear liquid rotates and rises and then passes through the second connecting plate 52z and the second flow stabilizing ring 42z, so that a certain effect of eliminating vortex can be achieved, and the vortex which rotates can be completely eliminated after passing through the first flow stabilizing ring 41z, so that the clear liquid passes through the overflow port 11z at a constant speed. If the structure of the flow stabilizing ring is not designed, the feed liquid has vortex when passing through the overflow port 11z, so that crystals are easily taken out and are blocked by scales at the position of the overflow port 11 z.
Example 3
In a further optimization of the embodiment 1 or 2, a capacity expansion tank 31 is further arranged above the clear liquid tank 3a, the outer diameter of the capacity expansion tank 31 is larger than that of the clear liquid tank 3a, and the capacity expansion tank 31 is in engagement transition with the clear liquid tank 3a through a capacity expansion transition taper pipe 32 which is wide at the top and narrow at the bottom. A clear liquid outlet 3e is arranged on the expansion transition taper pipe 32; the clear liquid tank 3a is provided with a connector connected with a clear liquid pipeline 17;
the side wall of the upper part of the expansion tank 31 is sunken to form a corrugated air bag accommodating groove 33, a corrugated air bag 34 is arranged in the corrugated air bag accommodating groove 33, and the outer edge of the corrugated air bag 34 is clamped with the corrugated air bag accommodating groove 33; the upper end of the expansion tank 31 is provided with an upper cover body 35, the upper cover body 35 is provided with an inflation pipeline valve 36 and an air release pipeline valve 37, the inflation pipeline valve 36 and the air release pipeline valve 37 are communicated with the corrugated air bag 34 through an air pipe 38, the inflation pipeline valve 36 is connected with an inflation pump, and the air release pipeline valve 37 is connected with an exhaust pump. The upper cover 35 communicates with the condenser 4 through a pipe.
For the surface area of further expansion feed liquid, still be provided with dilatation jar 31 above clear liquid jar 3a, dilatation jar 31 can further expansion feed liquid the uppermost surface area, accelerate the evaporation, simultaneously, the feed liquid is slowed down through clear liquid jar 3a and dilatation jar 31 two-stage, the surface keeps calmly basically, for making calm surface area obtain the ripple face, need ripple gasbag 34 to make the wave to the feed liquid, make the wave through quick inflation and the gassing to ripple gasbag 34, make ripple gasbag 34 volume take place to expand and contract, thereby contact and the separation to the feed liquid, thereby make the feed liquid surface produce undulantly, undulant feed liquid surface area further enlarges, thereby accelerate the evaporation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The acid-base wastewater evaporator is characterized by comprising a circulating pump (1), a steam heater (2), a separator (3), a condenser (4), a condensed water tank (5) and a vacuum pump (6) which are sequentially communicated, and further comprising a flotation device (7), wherein the flotation device (7) is communicated with the bottom (3) of the separator, and the separator (3) comprises a clear liquid tank (3 a) and a turbid liquid tank (3 b) which are sequentially communicated from top to bottom;
the lower part of the turbid liquid tank (3 b) is provided with a turbid liquid feeding taper pipe (3 c), the turbid liquid feeding taper pipe (3 c) is wide at the upper part and narrow at the lower part, the upper end of the turbid liquid feeding taper pipe (3 c) is communicated with the turbid liquid tank (3 b), and the lower end of the turbid liquid feeding taper pipe (3 c) is communicated with the flotation device (7);
the separator feeding port (3 d) is positioned on the side surface of the turbid liquid feeding conical pipe (3 c), and the feeding direction of the separator feeding port (3 d) is tangential to the side wall of the turbid liquid feeding conical pipe (3 c);
the outer diameter of the clear liquid tank (3 a) is larger than that of the turbid liquid tank (3 b), and the clear liquid tank (3 a) is connected and transited with the turbid liquid tank (3 b) through a clear liquid transition taper pipe (3 h) with a wide upper part and a narrow lower part.
2. The acid-base wastewater evaporator according to claim 1, characterized in that the bottom of the flotation device (7) is provided with a concentrate outlet (7 a), and the concentrate outlet (7 a) is connected with a discharge pump (9).
3. The acid-base wastewater evaporator as claimed in claim 3, further comprising a thickener (10), a centrifuge (11) and a mother liquor tank (12) which are communicated in sequence, wherein the discharge pump (9) is communicated with the thickener (10) through a concentrated liquor pipeline (13).
4. The acid-base wastewater evaporator according to claim 3, wherein a concentrated solution on-off valve (13 a) is provided on the concentrated solution pipe (13), a return pipe (14) is communicated with the concentrated solution pipe (13) between the concentrated solution on-off valve (13 a) and the discharge pump (9), the return pipe (14) is communicated with the turbid liquid tank (3 b), and a return on-off valve (14 a) is provided on the return pipe (14).
5. The acid-base wastewater evaporator as claimed in claim 4, characterized in that the return pipeline (14) and the turbid liquid tank (3 b) are connected to a return port (3 f), and the feeding direction of the return port (3 f) is tangential to the side wall of the turbid liquid feeding taper pipe (3 c).
6. The acid-base wastewater evaporator as claimed in claim 5, characterized in that the mother liquor outlet of the mother liquor tank (12) is connected with a mother liquor pump (15), and the mother liquor pump (15) is communicated with a raw liquor tank pipeline (16);
the stock solution tank pipeline (16) is provided with a stock solution tank opening and closing valve (16 a), a clear liquid pipeline (17) is communicated with the stock solution tank pipeline (16) between the stock solution tank opening and closing valve (16 a) and the mother liquid pump (15), the clear liquid pipeline (17) is communicated with the clear liquid tank (3 a), and the clear liquid pipeline (17) is provided with a clear liquid opening and closing valve (17 a).
7. The acid-base wastewater evaporator as claimed in claim 6, characterized in that a clear liquid outlet (3 e) is arranged on the side wall of the clear liquid tank (3 a), the clear liquid outlet (3 e) is communicated with the circulating pump (1) through a feeding pipeline (8), and a material inlet (8 a) is arranged on the feeding pipeline (8).
8. The acid-base wastewater evaporator as claimed in claim 1, wherein a capacity expansion tank (31) is further arranged above the clear liquid tank (3 a), the outer diameter of the capacity expansion tank (31) is larger than that of the clear liquid tank (3 a), and the capacity expansion tank (31) is connected and transited with the clear liquid tank (3 a) through a capacity expansion transition taper pipe (32) which is wide at the top and narrow at the bottom.
9. The acid-base wastewater evaporator as claimed in claim 8, wherein the upper side wall of the expansion tank (31) is recessed to form a ripple air bag accommodating groove (33), a ripple air bag (34) is arranged in the ripple air bag accommodating groove (33), and the outer edge of the ripple air bag (34) is clamped with the ripple air bag accommodating groove (33); the expansion tank (31) upper end is for going up lid (35), upward be provided with gas tube way valve (36) and bleeder line valve (37) on lid (35), gas tube way valve (36) and bleeder line valve (37) all communicate through trachea (38) and ripple gasbag (34), gas tube way valve (36) are connected with the pump, bleeder line valve (37) are connected with the air pump.
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|---|---|---|---|
| CN202010622473.0A CN111762831A (en) | 2020-07-01 | 2020-07-01 | Acid-base waste water evaporator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010622473.0A CN111762831A (en) | 2020-07-01 | 2020-07-01 | Acid-base waste water evaporator |
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| CN111762831A true CN111762831A (en) | 2020-10-13 |
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| CN202010622473.0A Pending CN111762831A (en) | 2020-07-01 | 2020-07-01 | Acid-base waste water evaporator |
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