CN217578355U - Feeding control system of high-salinity wastewater treatment system - Google Patents

Abstract

The utility model belongs to the technical field of waste water treatment, especially, relate to a high salt effluent disposal system's feed control system, including the scraper blade evaporimeter, feed system and control system, and the scraper blade evaporimeter includes that evaporation cauldron and cover establish the heating jacket on evaporation cauldron surface, feed system includes first charge pump and feed valve, control system includes the flowmeter, pressure sensor and PLC controller, the PLC controller passes through flowmeter and pressure sensor's detection and with information feedback, through setting up the parameter, adjust the feed valve, thereby control feeding rate, and with this control flash rate, through regulation and control, guarantee to evaporate moisture more than 70%, can keep certain mobility again, avoid taking place the circumstances of ejection of compact jam, automated control, improve the treatment effeciency, guarantee the persistence.

Description

Feeding control system of high-salinity wastewater treatment system

Technical Field

The utility model belongs to the technical field of waste water treatment, especially, relate to a high salt effluent disposal system's feed control system.

Background

The high-salinity wastewater is wastewater with the total salt mass fraction of at least 20%, the wastewater contains various substances (including salt, oil, organic heavy metal and radioactive substances), the organic substances of the high-salinity organic wastewater have large differences in the types and chemical properties of the organic substances according to different production processes, the salt concentration is high, the osmotic pressure is high, and cell plasma separation is caused by microbial cell dehydration; the salting-out action reduces the dehydrogenase activity; the chloride ions have toxic action on bacteria; the salt concentration is high, the density of the wastewater is increased, and the activated sludge is easy to float and run off, so that the purification effect of a biological treatment system is seriously influenced; aiming at the problem of how to treat high-salinity wastewater, a distillation desalting method is conventionally adopted at present; after distillation and concentration, solid-liquid separation is realized through equipment facilities such as a centrifugal machine, a filter and the like, the fixed waste salt and liquid are called as mother liquor collectively, the mother liquor is thick slurry liquid containing comprehensive substance components such as high-risk substances, saturated saline water, glue oil and the like, and the mother liquor has low salt purity and small crystal grains and can pass through a filter material; the components are complex; has high viscosity, high gum oil content, rich small salt, strong peculiar smell, black color and the like, and has the dual characteristics of wastewater and hazardous waste; the cost of direct consignment of solid waste treatment is too high.

For example, chinese patent application No. (CN 201320381323.0) discloses a scraper evaporator, which comprises a separation drum, a steam baffle and a distributor are arranged in the separation drum, and a feed inlet is arranged between the steam baffle and the distributor; the outer wall of the evaporation cylinder is provided with a heating jacket, and a scraper and a support frame are arranged in the evaporation cylinder; the main shaft extends into the separating cylinder and the evaporator and controls the distributor and the support frame to rotate, and the rotation of the support frame drives the scraper to rotate; the driving device is arranged above the separating cylinder and drives the main shaft to rotate; the lower end enclosure is arranged at the lower side of the evaporation cylinder, and the bottom side of the lower end enclosure is provided with a discharge port; the application of the feeding amount is uncontrollable, when the feeding amount is more, the evaporation effect is easily influenced, when the feeding amount is less, the evaporation is easily caused too fast, the condition that the material is adhered to the wall and blocks the discharge hole is generated, the feeding amount can not be automatically controlled, and the evaporation effect is ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem that above-mentioned exists, provide a high salt effluent disposal system's feed control system, reached automatic control feeding volume, guarantee to evaporate most moisture, can make the concentrate again keep certain mobility, avoid gluing the wall and the effect of blockking up the discharge gate.

In view of this, the utility model provides a high salt effluent disposal system's feed control system, include:

the scraper evaporator comprises an evaporation kettle and a heating jacket sleeved on the surface of the evaporation kettle, and high-temperature steam is introduced into the heating jacket;

the feeding system comprises a first feeding pump and a feeding valve, and the first feeding pump is used for conveying the high-salinity wastewater to the evaporation kettle;

the control system comprises a flowmeter, a pressure sensor and a PLC (programmable logic controller) and is used for controlling the feeding system;

wherein the flow meter is positioned between the first feeding pump and the evaporation kettle and is used for measuring the feeding flow;

the pressure sensor is arranged in the jacket and used for detecting the steam pressure in the heating jacket;

the PLC is electrically connected with the flowmeter and the pressure sensor and controls the feeding valve through signals fed back by the flowmeter and the pressure sensor to control the feeding amount.

In this technical scheme, the PLC controller passes through flowmeter and pressure sensor's detection and with information feedback, through setting up the parameter, adjusts the feed valve to control feed rate, and control flash rate with this, through regulation and control, guarantee to evaporate moisture more than 70%, can keep certain mobility again, avoid taking place the condition that the ejection of compact blockked up, automated control improves the treatment effeciency, guarantees the continuation.

In the above technical solution, further, the feeding system further includes:

the feeding ring pipe is sleeved on the surface of the evaporation kettle, the outer side of the feeding ring pipe is communicated with the first feeding pump, and the circumference of the inner side of the feeding ring pipe is provided with a plurality of feeding straight pipes penetrating through the evaporation kettle;

the electromagnetic valves are multiple and are respectively installed on the feeding straight pipes and are electrically connected with the PLC.

In this technical scheme, through setting up the feeding ring canal, adopt the multiple spot feeding, effectively improve the feeding homogeneity, it is inhomogeneous to reduce the evaporation kettle inner wall and have the material, leads to local heating efficiency to hang down, or local heating efficiency is too fast, influences whole flash distillation efficiency and flash distillation effect, and adopts the solenoid valve to carry out the break-make, guarantees the automated control effect of equipment.

In the above technical solution, further, the feeding system further includes:

the first rotating shaft is arranged in the evaporation kettle;

the first stirring rod is arranged on the surface of the first rotating shaft;

the scraper is arranged at one end of the first stirring rod, which is far away from the first rotating shaft;

and the distribution device is arranged on the first rotating shaft, corresponds to the feeding straight pipe and is used for enabling high-salinity wastewater to uniformly flow to the inner wall of the evaporation kettle.

In this technical scheme, thereby first pivot drives scraper blade and distributor rotation through first motor drive, after the feeding of feeding straight tube to through the inner wall of pivoted distributor with the centrifugal mode with mother liquor direction evaporating kettle, thereby guarantee that the mother liquor can be even stable along evaporating kettle inner wall downflow.

In the above technical solution, further, the distribution apparatus includes:

the arc-shaped plate is attached to the surface of the first rotating shaft and is detachably connected with the first rotating shaft;

the connecting rod is arranged on one surface of the arc plate far away from the axis;

the flow guide hopper is annular and is sleeved on the surface of the first rotating shaft, and one surface of the shaft center is connected with one end, far away from the arc-shaped plate, of the connecting rod;

wherein, the feeding straight pipe extends into the flow guide hopper.

In this technical scheme, through can dismantling the connection arc, be convenient for to the installation and the regulation of water conservancy diversion fill, guarantee distribution device's effect, structural strength is high, stability is good simultaneously.

In the above technical solution, further, the draft hopper includes:

the connecting plate is connected with one end of the connecting rod, which is far away from the arc-shaped plate;

the upper baffle is arranged at the top end of the connecting plate;

the guide plate is arranged at the bottom end of the connecting plate, and one end of the guide plate, which is far away from the axis, is obliquely arranged downwards;

wherein, a gap is formed between one surface of the connecting plate and the guide plate far away from the axle center and the inner wall of the evaporation kettle.

In this technical scheme, through setting up the overhead gage, avoid mother liquor to splash after getting into the water conservancy diversion fill, impact the connecting plate for the mother liquor only splashes in the water conservancy diversion fill, and reduces the impact of mother liquor, guarantees that the even and stable guide plate of following of mother liquor flows, guarantees distribution device's effect.

In the above technical solution, further, the feeding system further includes:

and the bevel opening is formed in one end, close to the flow guide hopper, of the feeding straight pipe and is positioned on one surface, close to the upper baffle, of the feeding straight pipe.

In this technical scheme, through setting up the bevel connection, avoid the mother liquor to strike the guide plate after getting into the water conservancy diversion fill, prevent to influence the even stable flow of following the guide plate of mother liquor.

In the above technical solution, further, the feeding system further includes:

the first preheater is arranged between the flowmeter and the feeding ring pipe and is provided with an inlet and an outlet;

wherein, the inlet of the first preheater is communicated with the flowmeter, and the outlet is communicated with the feeding ring pipe.

In this technical scheme, through setting up first pre-heater, preheat the mother liquor, flash distillation effect and flash distillation efficiency when guaranteeing the mother liquor and get into in the reation kettle.

In the above technical solution, further, the feeding system further includes:

the defoaming device is arranged on the first rotating shaft, is positioned above the distribution device and is used for blocking liquid foam entrained in the steam;

wherein, the defoaming device includes:

the mounting rack is sleeved on the first rotating shaft;

the defoaming net is installed on one side of the mounting frame far away from the first rotating shaft.

In this technical scheme, through setting up the defoaming device, play the effect that blocks to the partial liquid foam that steam that produces after the mother liquor evaporation carried, avoid steam to carry the mother liquor liquid drop, guarantee that the mother liquor liquid drop does not discharge from the gas outlet along with steam, play better defoaming effect.

The utility model has the advantages that:

1. through automatic setting, through parameter test and setting in advance, the liquid level meter and the pressure sensor detect and feed back, and after the liquid level meter and the pressure sensor are processed by the PLC, the feeding valve is adjusted, so that the regulation and control of the feeding flow and the evaporation rate are ensured, more than 70% of moisture can be evaporated, the processed mother liquid can keep certain fluidity, the discharging is convenient, the blocking condition is prevented, the flash evaporation efficiency and effect are improved, and the continuity of equipment is ensured;

2. through setting up the feeding ring canal, adopt the multiple spot feeding, effectively improve feeding homogeneity, it is uneven to reduce evaporation kettle inner wall and have the material, leads to local heating efficiency to hang down excessively, or local heating efficiency is too fast, influences whole flash distillation efficiency and flash distillation effect, and adopts the solenoid valve to carry out the break-make, guarantees the automated control effect of equipment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the configuration of the blade evaporator of the present invention;

FIG. 3 is an enlarged view of the invention at A in FIG. 2;

FIG. 4 is a schematic view of the feed loop configuration of the scraped surface evaporator of the present invention;

FIG. 5 is a schematic view of the plow dryer of the present invention;

FIG. 6 is a schematic view of a portion of the interior of the coulter dryer of the present invention;

FIG. 7 is a schematic view of the configuration of the coulter dryer coulter of the present invention;

the labels in the figures are: 10. a first feed pump; 11. a feed valve; 12. a first preheater; 120. a first steam inlet; 121. a first steam outlet; 13. a second feed pump; 14. a flow meter; 15. a PLC controller; 16. a feed loop; 160. feeding a straight pipe; 161. bevel connection; 17. an electromagnetic valve; 18. a defoaming device; 180. a mounting frame; 181. a defoaming net; 20. a scraper evaporator; 200. evaporating the kettle; 201. a first rotating shaft; 202. a first stirring rod; 203. a squeegee; 204. a first motor; 205. a distribution device; 2050. an arc-shaped plate; 2051. a connecting rod; 2052. a flow guide hopper; 2052a, a connecting plate; 2052b, an upper baffle; 2052c, a deflector; 21. a feed inlet; 22. a discharge port; 23. an air outlet; 230. a first air outlet; 231. a second air outlet; 24. a coulter dryer; 240. drying the kettle; 241. a second rotating shaft; 242. a second stirring rod; 243. a coulter; 2430. mounting grooves; 2431. a mounting frame; 2432. a cutter head; 2433. rake teeth; 244. a second motor; 245. scraping the material rod; 246. reinforcing ribs; 25. a connecting cylinder; 30. a heating jacket; 31. an annular heating cavity; 32. a steam generator; 33. a second preheater; 330. a second steam inlet; 331. a second steam outlet; 40. a condenser; 400. a cooling water inlet; 401. a cooling water outlet; 41. a receiving tank.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

Example 1:

the embodiment provides a high salt effluent disposal system, includes:

the feeding system is used for feeding the high-salinity wastewater;

the evaporation system comprises a scraper evaporator 20, is provided with a feed inlet 21, a discharge outlet 22 and an air outlet 23, and is used for negative pressure flash evaporation treatment of high-salinity wastewater;

the heating system is arranged on the evaporation system and is used for heating the evaporation system;

the condensing system is communicated with the air outlet 23 and is used for condensing the steam at the air outlet 23;

wherein the feed system is in communication with the feed inlet 21.

According to the embodiment, the negative pressure flash evaporation is carried out on the mother liquor of the high-salinity wastewater by adopting the scraper type evaporator, most of water contained in the mother liquor is removed, the filtering is not needed, frequent cleaning of the filter cloth during installation and disassembly is avoided, the working efficiency is high, the continuity is strong, the process is simple, the difficulty is low, the cost is low, and the practical effect is good.

Example 2:

the embodiment provides a high salinity wastewater treatment system, in addition to the technical scheme that includes the above-mentioned embodiment, still has following technical characteristics, and the vaporization system still includes:

a coulter dryer 24, wherein the coulter dryer 24 is communicated with the scraper evaporator 20, and a discharge hole 22 is arranged on the coulter dryer 24 and is used for further concentrating and drying the high-salinity wastewater;

the connecting cylinder 25 is arranged between the scraper evaporator 20 and the coulter dryer 24, the two ends of the connecting cylinder 25 are flange ends, the middle section of the connecting cylinder is a corrugated expansion joint, and the connecting cylinder 25 is respectively communicated with the scraper evaporator 20 and the coulter dryer 24;

wherein, the air outlet 23 comprises a first air outlet 230 arranged on the scraper evaporator 20 and a second air outlet 231 arranged on the coulter dryer 24; the two ends of the connecting cylinder 25 are connected with the scraper evaporator 20 and the coulter dryer 24 by bolts, and the corrugated expansion joint at the middle section of the connecting cylinder 25 is preferably made of rubber.

It can be seen that in the embodiment, further dry the mother liquor through after the flash distillation through coulter desicator 24, make the solid useless that comes out from discharge gate 22 can directly carry out solid useless processing, avoid handling the direct entrust of mother liquor, the solid useless quantity reduces a lot after handling, the packing is changed into in bags by original barrelling, the packing has been simplified, reduce treatment cost, and the one-stop type is handled, high performance, high efficiency, the energy consumption is low, the process time is short, the simple operation, and connecting cylinder 25 middle section sets to the ripple expansion joint, can effectively reduce and carry the possibility that takes place to block up between scraper evaporator 20 and coulter desicator 24, carry the convenience, the mutual interference that the vibrations that has also avoided simultaneously because of the equipment operation caused.

Example 3:

the present embodiment provides a high salinity wastewater treatment system, which comprises the technical features of the above embodiments, and the scraper evaporator 20 comprises:

the device comprises an evaporation kettle 200, wherein a first rotating shaft 201 is axially arranged in the evaporation kettle 200, a first stirring rod 202 is arranged on the surface of the first rotating shaft 201, and a scraper 203 is arranged at one end, far away from the first rotating shaft 201, of the first stirring rod 202;

a first motor 204, wherein the first motor 204 is installed on the evaporation kettle 200 and is used for driving the first rotating shaft 201;

the distribution device 205, the distribution device 205 is installed in the evaporation kettle 200, and is used for uniformly flowing the high-salinity wastewater to the inner wall of the evaporation kettle 200;

wherein, the distribution device 205 comprises:

the arc-shaped plate 2050 is attached to the surface of the first rotating shaft 201, and is detachably connected with the first rotating shaft 201;

the connecting rod 2051 is arranged on one surface, far away from the axis, of the arc-shaped plate 2050;

the flow guide bucket 2052 is annular, is sleeved on the surface of the first rotating shaft 201, and is connected with one end, far away from the arc-shaped plate 2050, of the connecting rod 2051 on one surface of the axis;

wherein, water conservancy diversion fill 2052 includes:

a connecting plate 2052a, wherein the connecting plate 2052a is connected with one end of the connecting rod 2051 far away from the arc-shaped plate 2050;

an upper baffle 2052b, the upper baffle 2052b is mounted at the top end of the connecting plate 2052 a;

the guide plate 2052c is arranged at the bottom end of the connecting plate 2052a, and one end, far away from the axis, of the guide plate 2052c is arranged in a downward inclined mode;

a gap is formed between one surface of the connecting plate 2052a, which is far away from the axis of the guide plate 2052c, and the inner wall of the evaporation kettle 200; preferentially adopt the coupling joint between the output shaft of first pivot 201 and first motor 204, preferentially adopt the welding between first puddler 202 and the first pivot 201, preferentially adopt bolt erection joint between arc 2050 and the first pivot 201, all adopt the welding between connecting rod 2051 both ends respectively and arc 2050 and the water conservancy diversion fill 2052, and preferentially adopt the welding between connecting plate 2052a, last baffle 2052b and the water conservancy diversion fill 2052 c.

In this embodiment, through set up distribution device 205 in evaporation kettle 200, make the mother liquor when entering into evaporation kettle 200, through pivoted distribution device 205 with centrifugal mode with the mother liquor direction evaporation kettle 200 on the inner wall, the liquid film is scraped into to the mother liquor on the evaporation kettle 200 inner wall through scraper blade 203 again, guarantee that the mother liquor can even stable along evaporation kettle 200 inner wall downward flow, thereby guarantee flash distillation efficiency and flash distillation effect, and through can dismantling connection arc 2050, be convenient for to the installation and the regulation of water conservancy diversion fill 2052, guarantee distribution device 205's effect, structural strength is high simultaneously, good stability, simultaneously overhead gage 2052b can avoid the mother liquor after getting into water conservancy diversion fill 2052, strike behind connecting plate 2052a, make the mother liquor only splash in water conservancy diversion fill 2052, and reduce the impact of mother liquor, guarantee that the mother liquor is even and stable to flow out from water conservancy diversion 2052c, guarantee distribution device 205's effect.

Example 4:

the embodiment provides a high-salinity wastewater treatment system, which comprises the technical scheme of the embodiment and is characterized in that the coulter dryer 24 comprises:

the feeding of the drying kettle 240 is connected with the discharging of the evaporation kettle 200, a second rotating shaft 241 is axially arranged in the drying kettle 240, a second stirring rod 242 is arranged on the surface of the second rotating shaft 241, and a coulter 243 is arranged at one end, far away from the second rotating shaft 241, of the second stirring rod 242;

a second motor 244, wherein the second motor 244 is installed on the drying kettle 240 and is used for driving a second rotating shaft 241;

the scraping rods 245 are positioned between every two radially adjacent second stirring rods 242 and are used for reducing adhesion of materials in the drying kettle 240;

a reinforcing rib 246, wherein the reinforcing rib 246 is positioned at one end of the second stirring rod 242 close to the second rotating shaft 241;

wherein the coulter 243 includes:

the mounting groove 2430 is obliquely formed at one end of the second stirring rod 242 away from the second rotating shaft 241;

the mounting frame 2431, the mounting frame 2431 is positioned in the mounting groove 2430;

the cutter head 2432 is installed in the mounting frame 2431, and one side of the cutter head 2432, which is close to the inner wall of the drying kettle 240, extends out of the mounting frame 2431;

rake teeth 2433, the rake teeth 2433 being installed at one end of the cutter head 2432 near the inner wall of the drying vessel 240 and facing the direction in which the cutter head 2432 follows the second agitating bar 242;

wherein, the included angle between the mounting groove 2430 and the second rotating shaft 241 is 45 degrees; the second stirring rods 242 which are adjacent to each other along the radial direction are distributed in a staggered manner; the reinforcing rib 246, the second rotating shaft 241 and the second stirring rod 242 are preferably welded, the scraping bar 245 is preferably made of a non-metal material, the cutter head 2432, the mounting frame 2431 and the second stirring rod 242 are preferably connected through bolts, and the rake teeth 2433 and the cutter head 2432 are preferably connected through bolts.

In this embodiment, it can be seen that, by arranging the scraping rod 245 in the drying kettle 240, most of the materials attached to the second rotating shaft 241, the second stirring rod 242, and the coulter 243 are scraped by the scraping rod 245, so that material accumulation is avoided, and the drying efficiency and the drying effect are not affected, and the reinforcing rib 246 effectively improves the structural strength and stability of the second stirring rod 242 mounted on the second rotating shaft 241, and improves the supporting strength and stability of the second stirring rod 242 on the scraping rod 245;

meanwhile, the installation groove 2430 and the installation frame 2431 facilitate the installation and the disassembly of the sheet-type coulter 243, the maintenance and the replacement of the damaged sheet-type coulter 243 are improved, the maintenance efficiency is improved, the included angle of 45 degrees between the installation groove 2430 and the second rotating shaft 241 can reduce the influence of the material scraping rod 245 on the action surface of the coulter 243 (when the material scraping rod 245 is pushed by the coulter 243 to ascend along the inner wall of the drying kettle 240), the effect of the coulter 243 for rolling materials is ensured, meanwhile, the inclined coulter 243 can reduce the resistance area when the coulter 243 is stirred along with the second stirring rod 242, so that the resistance is reduced, and the energy loss to the motor can be reduced to a certain extent;

and set up rake 2433 and along the crisscross distribution of two liang of adjacent second puddlers 242 in radial, not only improved the shearing effect to the material, still reach great stirring effective area with less second puddler 242 quantity, guarantee the stirring to the material to guarantee the drying efficiency and the drying effect of material, and rake 2433's setting can improve the convenience of coulter 243 following rotation in-process.

Example 5:

the embodiment provides a high salinity wastewater treatment system, in addition to the technical scheme that includes the above-mentioned embodiment, still has following technical characteristics, and feed system includes:

the first feeding pump 10 is connected with the feeding port 21, and is used for feeding high-salinity wastewater of the evaporation system;

a feed valve 11, wherein the feed valve 11 is arranged between the first feed pump 10 and the evaporation kettle 200;

the first preheater 12, the first preheater 12 is installed between the first feeding pump 10 and the feeding port 21, and is used for preheating the high-salinity wastewater;

the feeding ring pipe 16 is sleeved on the surface of the evaporation kettle 200, the outer side of the feeding ring pipe 16 is communicated with the first feeding pump 10, and the circumference of the inner side of the feeding ring pipe 16 is provided with a plurality of feeding straight pipes 160 penetrating through the evaporation kettle 200;

a plurality of electromagnetic valves 17, wherein the electromagnetic valves 17 are respectively arranged on the plurality of feeding straight pipes 160;

the bevel opening 161 is formed in one end, close to the diversion hopper 2052, of the feeding straight pipe 160, and is located on one side, close to the upper baffle 2052b, of the feeding straight pipe 160;

the defoaming device 18 is mounted on the first rotating shaft 201, is positioned above the distribution device 205, and is used for blocking liquid foam entrained in the steam;

wherein the defoaming device 18 includes:

the mounting rack 180 is sleeved on the first rotating shaft 201;

and the defoaming net 181, the defoaming net 181 is installed on one side of the mounting frame 180 far away from the first rotating shaft 201.

Wherein, the first preheater 12 is provided with a first steam inlet 120 and a first steam outlet 121, the first steam inlet 120 is connected with the air outlet 23, and the first steam outlet 121 is connected with the condensing system; a plurality of feeding straight pipes 160 extend into the evaporation kettle 200 and are arranged corresponding to the diversion hopper 2052; the feeding ring pipe 16, the feeding straight pipe 160 and the electromagnetic valve 17 are preferably connected by flange bolts, the mounting frame 180 and the first rotating shaft 201 are preferably fixed by bolts, and the defoaming net 181 is preferably made of metal mesh and is preferably fixed by bolts.

In the embodiment, the first preheater 12 is arranged to preheat the mother liquor, so that the flash evaporation effect and the flash evaporation efficiency of the mother liquor entering the evaporation kettle 200 are ensured, and the steam generated in the scraper evaporator 20 and the coulter dryer 24 is used as the heat source of the first preheater 12, so that an additional heat source is avoided, the energy loss is reduced, and a better energy-saving effect is achieved; by adopting the feeding ring pipe 16 and multipoint feeding, the feeding uniformity is effectively improved, the phenomenon that the local heating efficiency is too low or the local heating efficiency is too high due to the existence of material unevenness on the inner wall of the evaporation kettle 200, the overall flash evaporation efficiency and the flash evaporation effect are influenced is reduced, the electromagnetic valve 17 is adopted for on-off, the automatic control effect of equipment is ensured, the inclined opening 161 can prevent mother liquor from impacting the guide plate 2052c after entering the guide hopper 2052, and the mother liquor is prevented from uniformly and stably flowing out of the guide plate 2052 c; and through setting up defoaming device 18, play the effect that blocks to the partial liquid foam that steam that produces after the mother liquor evaporation carried, avoid steam to carry the mother liquor liquid drop, guarantee that the mother liquor liquid drop does not discharge from first gas outlet 230 along with steam, play better defoaming effect.

Example 6:

the embodiment provides a high salinity wastewater treatment system, in addition to the technical scheme that includes the above-mentioned embodiment, still has following technical characteristics, and feed system still includes:

and the cleaning system comprises a second feeding pump 13, and the second feeding pump 13 is connected with the first feeding pump 10 in parallel, is communicated with the inlet of the first preheater 12 and is used for conveying cleaning water to the evaporation kettle 200.

This embodiment can be seen from, through set up cleaning system in feed system, thereby continue to let in a small amount of washing water after the feeding (close first charge pump 10, open second charge pump 13), carry out the humidification to long-pending material on the evaporation cauldron 200 inner wall, improve mobility, long-pending material whereabouts, and continue the flash distillation at the in-process of long-pending material whereabouts, get rid of most washing water, make cleaning system both can clear up the long-pending material of evaporation cauldron 200 inner walls and can avoid wasing water and get into coulter desicator 24 and increase its consumption again, simple structure is with low costs, and practical function is good.

Example 7:

the embodiment provides a high salinity wastewater treatment system, in addition to the technical scheme that includes the above-mentioned embodiment, still has following technical characteristics, and feed system still includes:

the control system comprises a flowmeter 14, a pressure sensor and a PLC (programmable logic controller) 15 and is used for controlling the feeding system;

wherein flow meters 14 are installed between the first feed pump 10 and the first preheater 12 and between the second feed pump 13 and the first preheater 12, and are used to measure the feed flow rate;

the pressure sensor is arranged in the jacket and used for detecting the steam pressure in the heating jacket 30;

the PLC 15 is electrically connected with the flowmeter 14 and the pressure sensor, and controls the feeding valve 11 through signals fed back by the flowmeter 14 and the pressure sensor so as to control the feeding amount;

wherein, detect the pressure of steam in the heating jacket 30 through pressure sensor, because of steam pressure is directly proportional with steam temperature, and steam pressure in the jacket is stable when the feeding, consequently, know steam temperature through the pressure that detects steam, the steam pressure is higher, the temperature difference between heating jacket 30 and the evaporation cauldron 200 is the bigger, the evaporation capacity is the bigger, thereby through simulation test in advance, under the condition of different steam pressures, vacuum degree and feeding flow, the evaporation rate of mother liquor, thereby in actual processing process, keep the vacuum degree invariable, confirm evaporation rate through measuring feeding flow and steam pressure, and then change feeding flow through adjusting feed valve 11, in order to reach change evaporation rate, realize automated control.

This embodiment can be seen from, through automatic setting, through parameter test and setting in advance, detect and feed back by flowmeter 14 and pressure sensor, after handling through PLC controller 15, adjust feed valve 11, guarantee to the regulation and control of feeding flow and evaporation rate, guarantee to evaporate the moisture more than 70%, can make the mother liquor after being handled again keep certain mobility, the ejection of compact of being convenient for prevents to take place the condition of jam, improve flash distillation efficiency and effect, guarantee the continuation of equipment.

Example 8:

the embodiment provides a high salinity wastewater treatment system, which comprises the technical scheme of the embodiment and also has the following technical characteristics, wherein the heating system comprises:

the heating jacket 30 is wrapped on the outer surfaces of the evaporation kettle 200 and the drying kettle 240, and an annular heating cavity 31 is formed in the heating jacket 30;

the outlet of the steam generator 32 is communicated with the annular heating cavity 31 and is used for providing high-temperature steam for the annular heating cavity 31;

one side of the second preheater 33 is communicated with the annular heating cavity 31, and the other side of the second preheater 33 is connected with an inlet of the steam generator 32;

the second preheater 33 is provided with a second steam inlet 330 and a second steam outlet 331, the second steam inlet 330 is connected with the air outlet 23, and the second steam outlet 331 is connected with the condensing system.

In the embodiment, it can be seen that, by using the steam generated in the scraper evaporator 20 and the coulter dryer 24 as the heat source of the second preheater 33 and preheating the steam water by the second preheater 33, the efficiency and the effect of converting the steam water into the steam after entering the steam generator 32 are improved, the energy consumption of the steam generator 32 is reduced, and the energy saving effect is better.

Example 9:

the embodiment provides a high salinity wastewater treatment system, in addition to the technical scheme that includes the above-mentioned embodiment, still has following technical characteristics, and the condensing system includes:

a condenser 40, an inlet of the condenser 40 is communicated with the first steam outlet 121 and the second steam outlet 331;

a receiving tank 41, wherein the inlet of the receiving tank 41 is communicated with the outlet of the condenser 40;

wherein, the condenser 40 is provided with a cooling water inlet 400 and a cooling water outlet 401; the condensed water in the receiving tank 41 can be used for cleaning water of the system or steam water of the steam generator 32, i.e., the receiving tank 41 is communicated with the second feed pump 13 and the second preheater 33.

In the embodiment, it can be seen that the excessive steam coming out from the first preheater 12 and the second preheater 33 is condensed by the condenser 40, and is collected at the same time, so as to avoid external emission and achieve zero emission effect.

Example 10:

the embodiment provides a treatment process of a high-salinity wastewater treatment system, which comprises the following steps of:

s1: the scraper evaporator 20, the coulter dryer 24 and the steam generator 32 are started, high-temperature steam generated by the steam generator 32 is introduced into the annular heating cavity 31 in the heating jacket 30 on the outer surfaces of the evaporation kettle 200 and the drying kettle 240, the temperature in the evaporation kettle 200 and the drying kettle 240 is kept at 70-90 ℃, and the vacuum degree is kept at 0.07-0.09Mpa.

S2: the high-salinity wastewater is conveyed by the first feed pump 10, passes through the first preheater 12 and then enters the evaporation kettle 200, and the temperature of the first preheater 12 is 60-65 ℃.

S3: the distribution device 205 evenly flows to the inner wall with high salt waste water, and first motor 204 starts, drives first pivot 201 and drives first puddler 202 and scraper blade 203, forms the liquid film with high salt waste water on the inner wall, and high salt waste water begins the distillation, and steam is gone out from gas outlet 23, and the concentrate falls into at the bottom of the cauldron of evaporating kettle 200.

S4: the coulter dryer 24 further concentrates and dries the concentrated solution, when the material is over the second rotating shaft 241, the first feeding pump 10 is closed, the second feeding pump 13 is opened, and the second feeding pump 13 is closed after 10 min.

S5: when the steam amount at the second air outlet 231 on the coulter dryer 24 is continuously smaller and the current of the second motor 244 is obviously increased, the steam is closed, the vacuum is stopped, and the materials are discharged from the discharge hole 22 on the coulter dryer 24.

It can be seen that in this embodiment, carry out the flash distillation through scraper evaporator 20 to the mother liquor, get rid of most moisture that contains, guarantee mobility simultaneously, then get into coulter desicator 24 and carry out further concentration and drying to make and directly handle as solid useless through discharge gate 22 discharge, need not pass through multiple treatment, the treatment effeciency is high, and need not pass through the filtration, has avoided the frequent washing to the filter cloth, and the cost is lower.

While the embodiments of the present application have been described in connection with the drawings, the embodiments and features of the embodiments of the present application can be combined with each other without conflict, and the present application is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present application and the claims.

Claims (8)

1. A feed control system for a high salinity wastewater treatment system, comprising:

the scraper evaporator (20), the scraper evaporator (20) comprises an evaporation kettle (200) and a heating jacket (30) sleeved on the surface of the evaporation kettle (200), and high-temperature steam is introduced into the heating jacket (30);

a feed system comprising a first feed pump (10) and a feed valve (11), the first feed pump (10) being for conveying high salinity wastewater to the evaporation tank (200);

a control system comprising a flow meter (14), a pressure sensor and a PLC controller (15) for controlling the feed system;

wherein the flow meter (14) is located between the first feed pump (10) and the evaporator (200) and is used for measuring the feed flow;

the pressure sensor is arranged in the jacket and is used for detecting the steam pressure in the heating jacket (30);

the PLC (15) is electrically connected with the flowmeter (14) and the pressure sensor, and controls the feeding valve (11) through signals fed back by the flowmeter (14) and the pressure sensor to control the feeding amount.

2. The feed control system of a high salinity wastewater treatment system according to claim 1, characterized in that said feed system further comprises:

the feeding ring pipe (16) is sleeved on the surface of the evaporation kettle (200), the outer side of the feeding ring pipe (16) is communicated with the first feeding pump (10), and the circumference of the inner side of the feeding ring pipe is provided with a plurality of feeding straight pipes (160) penetrating through the evaporation kettle (200);

the electromagnetic valves (17) are multiple, are respectively installed on the feeding straight pipes (160), and are electrically connected with the PLC (15).

3. The feed control system of a high salinity wastewater treatment system according to claim 2, characterized in that said feed system further comprises:

the first rotating shaft (201), the first rotating shaft (201) is installed in the evaporation kettle (200) and is driven by a first motor (204) installed on the evaporation kettle (200);

the first stirring rod (202), the first stirring rod (202) is installed on the surface of the first rotating shaft (201);

the scraper (203), the scraper (203) is arranged at one end of the first stirring rod (202) far away from the first rotating shaft (201);

and the distribution device (205) is arranged on the first rotating shaft (201), corresponds to the feeding straight pipe (160), and is used for enabling high-salinity wastewater to uniformly flow to the inner wall of the evaporation kettle (200).

4. A feed control system for a high salinity wastewater treatment system according to claim 3, characterized in that said distribution means (205) comprises:

the arc-shaped plate (2050) is attached to the surface of the first rotating shaft (201) and detachably connected with the first rotating shaft (201);

the connecting rod (2051), the connecting rod (2051) is installed on one surface, far away from the axis, of the arc-shaped plate (2050);

the flow guide hopper (2052) is annular and is sleeved on the surface of the first rotating shaft (201), and one surface of the axis is connected with one end, far away from the arc-shaped plate (2050), of the connecting rod (2051);

wherein the feed straight pipe (160) extends into the flow guide hopper (2052).

5. The feed control system of a high salinity wastewater treatment system according to claim 4, characterized in that said diversion hopper (2052) comprises:

the connecting plate (2052 a) is connected with one end, far away from the arc-shaped plate (2050), of the connecting rod (2051);

the upper baffle (2052 b), the said upper baffle (2052 b) is installed on the top of the tie plate (2052 a);

the guide plate (2052 c) is installed at the bottom end of the connecting plate (2052 a), and one end, far away from the axis, of the guide plate (2052 c) is arranged in a downward inclined mode;

wherein, a gap is formed between one surface of the connecting plate (2052 a) and the baffle (2052 c), which are far away from the axle center, and the inner wall of the evaporation kettle (200).

6. The feed control system of a high salinity wastewater treatment system according to claim 5, characterized in that said feed system further comprises:

the inclined opening (161) is formed in one end, close to the flow guide hopper (2052), of the feeding straight pipe (160), and is located on one surface, close to the upper baffle (2052 b), of the feeding straight pipe (160).

7. The feed control system of a high salinity wastewater treatment system according to claim 6, characterized in that said feed system further comprises:

the first preheater (12), the first preheater (12) is installed between the flowmeter (14) and the feeding circular pipe (16), and is provided with an inlet and an outlet;

wherein the inlet of the first preheater (12) is in communication with a flow meter (14) and the outlet is in communication with a feed loop (16).

8. The feed control system of a high salinity wastewater treatment system according to claim 7, characterized in that said feed system further comprises:

the defoaming device (18) is mounted on the first rotating shaft (201), is positioned above the distribution device (205), and is used for blocking liquid foam entrained in the steam;

wherein the defoaming device (18) comprises:

the mounting rack (180), the mounting rack (180) is sleeved on the first rotating shaft (201);

the defoaming net (181) is arranged on one side, away from the first rotating shaft (201), of the mounting frame (180).

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