CN217535735U

CN217535735U - Evaporation desalination device

Info

Publication number: CN217535735U
Application number: CN202220344228.2U
Authority: CN
Inventors: 曾立华; 罗忠岩; 温志华; 高健斌
Original assignee: Fujian Zijin Beneficiation Reagent Co ltd
Current assignee: Fujian Zijin Beneficiation Reagent Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-10-04
Anticipated expiration: 2032-02-21

Abstract

The utility model relates to an evaporation desalination technical field especially relates to an evaporation desalination device. The technical scheme comprises the following steps: evaporating kettle, evaporating kettle installs blowing pipe, inlet pipe and evaporation gas pipe, centrifuge is installed to the one end of blowing pipe, the PH equalizing basin is installed to the one end of inlet pipe, shell and tube condenser is installed to evaporation gas tracheal one end, the bolt is passed through to one side of shell and tube condenser and is installed on evaporating kettle, and shell and tube condenser installs the evacuation pipe, the condensate is installed to the one end of evacuation pipe and is received the jar, evaporating kettle adopts 304 stainless steel material, and evaporating kettle's internally mounted has evaporation coil, the through hole has been seted up to one side of evaporating kettle, through hole fixedly connected with bearing. The utility model discloses the content of magnesium sulfate in the waste water has not only reduced this type of waste water salt content within original 30% decline to 3000mg/L, can obtain after making it discharge into biochemical treatment system and handle, has fully retrieved the magnesium sulfate crystal salt in the waste water simultaneously.

Description

Evaporation desalination device

Technical Field

The utility model relates to an evaporation desalination technical field especially relates to an evaporation desalination device.

Background

During the production process of the copper extractant, magnesium powder is used as an intermediate for formylation reaction, and then magnesium ions are hydrolyzed out by adopting a sulfuric acid hydrolysis mode. And discharging the hydrolyzed magnesium sulfate into a wastewater treatment system for treatment.

The magnesium sulfate wastewater contains higher salinity and more organic matters, and is treated by a biochemical treatment system, because the content of magnesium sulfate is up to 30 percent, the concentration of the whole wastewater is up to more than 5 percent after the magnesium sulfate wastewater is discharged into a regulating tank of the whole biochemical treatment system, the activity of anaerobic bacteria and aerobic bacteria of the biochemical treatment system is directly influenced, the biochemical treatment effect is greatly reduced, the whole wastewater biochemical treatment system can ensure the standard treatment requirement of the existing biochemical treatment system after diluting the wastewater with a large amount of low salinity and low COD content, and the operation difficulty of the whole wastewater treatment is large and the flow is long.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the prior art and providing an evaporation desalting device which can effectively reduce the magnesium sulfate content in magnesium sulfate wastewater.

The technical scheme of the utility model: the utility model provides an evaporation desalination device, includes the evaporation kettle, the evaporation kettle installs blowing pipe, inlet pipe and evaporation trachea, centrifuge is installed to the one end of blowing pipe, the PH equalizing basin is installed to the one end of inlet pipe, shell and tube condenser is installed to evaporation trachea's one end, the bolt is passed through to one side of shell and tube condenser and is installed on the evaporation kettle, and shell and tube condenser installs the evacuation pipe, the condensate is installed to the one end of evacuation pipe and is received the jar.

Preferably, the evaporation kettle is made of 304 stainless steel, and an evaporation coil is arranged in the evaporation kettle.

Preferably, a through hole is formed in one side of the evaporation kettle, a bearing is fixedly connected with the through hole, a stirring shaft is fixedly connected with the bearing, the stirring shaft is connected with a stirring blade, and the stirring blade is located in the middle of the evaporation coil.

Preferably, one side of the evaporation kettle is connected with a motor mounting rack through a bolt, one side of the motor mounting rack is fixedly connected with a speed reduction motor, and an output shaft of the speed reduction motor is fixedly connected with one end of the stirring shaft.

Preferably, the discharging pipe and the feeding pipe are both provided with electromagnetic valves.

Compared with the prior art, the utility model discloses following profitable technological effect has:

1: evaporating and concentrating desalting at low temperature by adopting an evaporation and negative pressure mode, condensing and collecting evaporated liquid by using a tubular condenser, and then discharging the evaporated liquid into a biochemical treatment system, so that the salinity of the biochemically treated wastewater is controlled within 12000mg/L, and the content of magnesium sulfate in the wastewater is reduced from the original 30% to 3000mg/L, thereby not only reducing the salt content of the wastewater, but also being capable of treating the wastewater after being discharged into the biochemical treatment system, and simultaneously fully recovering magnesium sulfate crystal salt in the wastewater.

Drawings

FIG. 1 is a front view of an evaporative desalination apparatus;

fig. 2 is a cross-sectional view of the vaporization kettle shown in fig. 1.

Reference numerals: 1. evaporating the kettle; 2. a motor mounting bracket; 3. a reduction motor; 4. a stirring shaft; 5. stirring blades; 6. an evaporating coil; 7. discharging the material pipe; 8. a centrifuge; 9. a pH adjusting tank; 10. a feed pipe; 11. an evaporation gas pipe; 12. a shell and tube condenser; 13. emptying the pipe; 14. a condensate receiving tank.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1-2, the utility model provides an evaporation desalination device, including evaporation kettle 1, evaporation kettle 1 installs blowing pipe 7, inlet pipe 10 and evaporation trachea 11, centrifuge 8 is installed to the one end of blowing pipe 7, and evaporation concentration's waste water is salted out through cooling back magnesium sulfate crystallization, carries out centrifugal desalination through centrifuge 8, obtains magnesium sulfate crystallization salt by-product, PH equalizing basin 9 is installed to the one end of inlet pipe 10, and waste water is earlier through the sulphuric acid neutralization that adds in PH equalizing basin 9 and the magnesium sulfate waste water, makes its pH value control about 5, reduces the corruption of waste water to evaporation equipment, shell and tube condenser 12 is installed to evaporation trachea 11's one end, shell and tube condenser 12's one side is passed through the bolt and is installed on evaporation kettle 1, and shell and tube condenser 12 installs evacuation pipe 13, condensate receiving tank 14 is installed to evacuation pipe 13's one end, evaporation kettle 1 adopts 304 stainless steel, and evaporation kettle 1's internally mounted has evaporation pan 6, evaporation kettle 1's one side has seted up the through hole, through hole fixedly connected with bearing fixedly connected with 4, bearing 4, stirring shaft 4 is connected with motor mounting bracket 3 and motor shaft 3 and the motor mounting bracket 2, the motor 2 one side of stirring shaft is connected with the motor mounting bracket 3, the motor shaft 3, and the motor of motor shaft 4, the impeller mounting bracket 3, the motor mounting bracket 3, the impeller mounting bracket 2, the motor of the impeller mounting bracket 3, the impeller mounting bracket 2, the impeller mounting bracket is connected with the motor of motor.

In the embodiment, evaporation and negative pressure are adopted for evaporation concentration desalination at low temperature, evaporated liquid is condensed and collected by using a tubular condenser 12 and then discharged into a biochemical treatment system, and the salinity of the biochemically treated wastewater is controlled within 12000 mg/L.

Example two

As shown in fig. 1-2, the utility model provides an evaporation desalination device compares in embodiment one, and this embodiment still includes evaporation kettle 1, evaporation kettle 1 installs blowing pipe 7, inlet pipe 10 and evaporation trachea 11, centrifuge 8 is installed to the one end of blowing pipe 7, and evaporation concentration's waste water is through cooling back magnesium sulfate crystallization salt salting out, carries out centrifugal desalination through centrifuge 8, obtains magnesium sulfate crystallization salt byproduct, PH adjusting tank 9 is installed to the one end of inlet pipe 10, and waste water adds the sulphuric acid in magnesium oxide and the magnesium sulfate waste water through PH adjusting tank 9 earlier and carries out neutralization, makes its pH value control about 5, reduces the corruption of waste water to evaporation equipment, shell and tube condenser 12 is installed to evaporation trachea 11's one end, shell and tube condenser 12's one side is passed through the bolt and is installed on evaporation kettle 1, and shell and tube condenser 12 installs evacuation pipe 13, evacuation pipe 13's one end is installed and is received jar 14, evaporation kettle 1 adopts 304 stainless steel material, and evaporation kettle 1's internally mounted has evaporation coil 6, the one side of evaporation kettle 1 has seted up the through hole, the fixed bearing is connected with motor mounting bracket 4, motor 5 one end of motor is connected with the motor mounting bracket 4, the motor 5 is connected with the motor mounting bracket 4, the motor 2 is connected with the motor shaft 4, the motor 2 is connected with the motor mounting bracket 4, the motor shaft 4 is connected with the motor mounting bracket 4, the motor shaft 4 is connected with the motor 2 one side of the motor mounting bracket 4.

In the embodiment, 3 cubic magnesium sulfate wastewater is fed for 1 time in an industrial test, steam is adopted for heating and evaporation concentration is carried out to 50% under the negative pressure condition of-0.06 to-0.08 MPa, after an evaporation solution is condensed, the COD (chemical oxygen demand) of a condensate is 10000mg/L, the salinity in the wastewater is reduced to 3000mg/L in the condensate from the original 30%, the salinity in the biochemical treatment wastewater is reduced, and the biochemical treatment effect is improved.

The above embodiments are merely some preferred embodiments of the present invention, and many alternative modifications and combinations can be made to the above embodiments by those skilled in the art based on the technical solution of the present invention and the related teachings of the above embodiments.

Claims

1. The utility model provides an evaporation desalination device, includes evaporation kettle (1), its characterized in that: evaporating kettle (1) is installed discharging pipe (7), inlet pipe (10) and evaporation gas pipe (11), centrifuge (8) are installed to the one end of discharging pipe (7), PH equalizing basin (9) are installed to the one end of inlet pipe (10), shell and tube condenser (12) are installed to the one end of evaporation gas pipe (11), install on evaporating kettle (1) through the bolt in one side of shell and tube condenser (12), and shell and tube condenser (12) install evacuation pipe (13), condensate receiving tank (14) are installed to the one end of evacuation pipe (13).

2. The evaporative desalination device as claimed in claim 1, wherein the evaporator (1) is made of 304 stainless steel, and the evaporator (1) is internally provided with the evaporation coil (6).

3. The evaporation desalination device according to claim 2, wherein one side of the evaporation kettle (1) is provided with a through hole, the through hole is fixedly connected with a bearing, the bearing is fixedly connected with a stirring shaft (4), the stirring shaft (4) is connected with a stirring blade (5), and the stirring blade (5) is positioned in the middle of the evaporation coil (6).

4. The evaporation desalination device according to claim 3, wherein one side of the evaporation kettle (1) is connected with a motor mounting rack (2) through a bolt, one side of the motor mounting rack (2) is fixedly connected with a speed reduction motor (3), and an output shaft of the speed reduction motor (3) is fixedly connected with one end of the stirring shaft (4).

5. An evaporative desalination unit as claimed in claim 1, characterized in that the discharge pipe (7) and the feed pipe (10) are fitted with solenoid valves.