CN110694287A - Low-temperature evaporation crystallizer - Google Patents
Low-temperature evaporation crystallizer Download PDFInfo
- Publication number
- CN110694287A CN110694287A CN201910914880.6A CN201910914880A CN110694287A CN 110694287 A CN110694287 A CN 110694287A CN 201910914880 A CN201910914880 A CN 201910914880A CN 110694287 A CN110694287 A CN 110694287A
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- China
- Prior art keywords
- cavity
- crystallization
- baffle plate
- water inlet
- evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0041—Use of fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0029—Use of radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0018—Evaporation of components of the mixture to be separated
- B01D9/0031—Evaporation of components of the mixture to be separated by heating
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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
- C02F1/048—Purification of waste water by evaporation
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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
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a low-temperature evaporative crystallizer, which comprises a shell and is characterized in that: the shell is internally provided with a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate divide an inner cavity of the shell into a water inlet cavity, a middle cavity and an evaporation cavity, a plurality of layers of crystallization cavities are vertically arranged in the middle cavity, a bottom plate of each layer of crystallization cavity is a crystallization plate which is obliquely arranged, a top plate is filter cloth which is obliquely arranged, the first baffle plate is provided with a first air hole to conduct the crystallization cavity with the water inlet cavity, the second baffle plate is provided with a second air hole and a water drain hole to conduct the crystallization cavity with the evaporation cavity, a water distribution pipe is arranged on one side of the water inlet cavity above the filter cloth of each layer of crystallization cavity and communicated with a water inlet pipe, a heating part is arranged in the middle cavity, a water atomizer is arranged in the evaporation cavity, the evaporation cavity is connected with a blowing pipe, the water inlet cavity is connected with an air suction pipe. The invention has the advantages of compact structure and low energy consumption.
Description
Technical Field
The invention belongs to the technical field of evaporative crystallization, and particularly relates to a low-temperature evaporative crystallizer.
Background
The evaporative crystallizer is used for evaporating partial solvent to enable the solution to reach a supersaturation state, and simultaneously analyzing out salt (not sodium chloride) in the solution. Some of these manufacturers also use evaporative crystallizers in sewage treatment to separate the water from the salt content of the water. The more common principle of the evaporator is to evaporate water by heating, so as to separate out salt in the water, but the method generally has the defect of high energy consumption.
Disclosure of Invention
In view of the disadvantages of the background art, the present invention aims to provide a low-temperature evaporative crystallizer with the advantages of compact structure and low energy consumption.
The invention is implemented by the following technical scheme:
low temperature evaporation crystallizer, including the casing, its characterized in that: the shell is internally provided with a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate divide an inner cavity of the shell into a water inlet cavity, a middle cavity and an evaporation cavity, a plurality of layers of crystallization cavities are vertically arranged in the middle cavity, a bottom plate of each layer of crystallization cavity is a crystallization plate which is obliquely arranged, a top plate is filter cloth which is obliquely arranged, the first baffle plate is provided with a first air hole to communicate the crystallization cavity with the water inlet cavity, the second baffle plate is provided with a second air hole and a water drain hole to communicate the crystallization cavity with the evaporation cavity, a water distribution pipe is arranged on one side of the water inlet cavity above the filter cloth of each layer of crystallization cavity, the water distribution pipe is communicated with a water inlet pipe, a heating part is arranged in the middle cavity, a water atomizer is arranged in the evaporation cavity, the evaporation cavity is connected with a blowing pipe. The blowpipe is communicated with a hot air fan.
The low-temperature evaporative crystallizer has a compact structure and low energy consumption, when sewage is treated, firstly, the sewage is pumped into the water distribution pipe through the water inlet pipe under the action of the pump, the water distribution pipe divides the sewage into a plurality of small flows and flows down onto the filter cloth, the filter cloth is obliquely arranged, so that the liquid flows down to the lower end of the filter cloth and flows onto the crystallization plate along the second baffle plate under the guide action of the gravity of the liquid and the filter cloth, and the crystallization chamber is heated by the heating part to have higher temperature (the heating temperature is generally between 50 and 100 ℃ and is determined according to different sewage properties), so when the small flows on the filter cloth, part of water of the liquid tending to be infinitely thin is directly evaporated and is sucked away by the air suction pipe through the first air holes, and the liquid is concentrated; then, concentrated liquid flowing onto the crystallization plate enters an evaporation cavity through a drain hole, a water atomizer atomizes the liquid in the evaporation cavity to enable the liquid to form liquid drops with small particle sizes, the liquid drops quickly form gas under the action of hot air blowing (the temperature of the hot air blowing is lower than the heating temperature of the middle cavity), salt is separated out from water, meanwhile, the air blowing pipe blows air, the air suction pipe exhausts air to enable the negative pressure effect to be formed among the water inlet cavity, the middle cavity and the evaporation cavity, and the gas in the evaporation cavity sequentially passes through the second air hole, the crystallization cavity and the first air hole, then enters the water inlet cavity and is discharged through the air suction pipe; when gas passes through the crystallization chamber, the gas can contact the crystallization plate, the crystallization plate arranged obliquely increases the crystallization contact area, and because the temperature of the crystallization plate is higher, moisture can be evaporated and absorbed by the air suction pipe, and salt components are separated out on the crystallization plate (the crystallization plate needs to be cleaned regularly). Above-mentioned in-process, when sewage trickle is through the filter cloth, the filter cloth can also adsorb out the oil stain in the sewage for become gaseous when the sewage after the atomizing contacts with hot blowing fast.
Preferably, the water distribution pipes are arranged in rows along the arrangement direction of the filter cloth. The design can ensure that the sewage forms a whole row of small fine flow and flows down onto the filter cloth.
Preferably, the crystallization plate and the filter cloth have the same inclination direction.
Preferably, the housing, the first baffle, the second baffle and the crystallization plate are made of 306 or 316 grade stainless steel plates.
The filter cloth is made of vinylon materials.
The bottom of the evaporation chamber is provided with a return pipe, the return pipe is connected with a water inlet pipe, and a return pump is arranged on a pipeline of the return pipe. The design can make the redundant residual liquid in the evaporation chamber flow back to the water inlet pipe again through the return pipe for circulating evaporation, thereby ensuring that the evaporation chamber can continuously and normally work.
Drawings
The invention has the following drawings:
FIG. 1 is a view of the outline of the present invention;
fig. 2 is an internal structural view of the present invention.
Detailed Description
As shown in the figure, the low-temperature evaporation crystallizer comprises a shell 1, a first baffle plate 2 and a second baffle plate 3 are arranged in the shell 1, the inner cavity of the shell is divided into a water inlet chamber 4, a middle chamber 5 and an evaporation chamber 6 by the first baffle plate and the second baffle plate, a plurality of layers of crystallization chambers 7 are arranged in the middle chamber 5 up and down, the bottom plate of each layer of crystallization chamber 7 is a crystallization plate 71 which is obliquely arranged, the top plate is an obliquely arranged filter cloth 72, the crystallization plate 71 and the filter cloth 72 have the same oblique direction, the shell 1, the first baffle plate 2, the second baffle plate 3 and the crystallization plate 71 adopt stainless steel plates with 306 or 316 brands, the filter cloth 72 adopts vinylon materials, 295 brands and 450g per square meter, the first baffle plate 2 is provided with a first vent hole 18 for conducting the crystallization chamber 5 with the water inlet chamber 4, the second baffle plate 3 is provided with a second vent hole 10 and a drain hole 9 for conducting the crystallization chamber 5 with the evaporation chamber 6, the drain hole 9 is positioned below the second air vent 10, a water distribution pipe 13 is arranged on one side of the water inlet chamber 4 above the filter cloth 72 of each layer of the crystallization chamber 7, the water distribution pipes 13 are arranged in a front-back arrangement along the arrangement direction of the filter cloth 72, the water distribution pipes 13 are communicated with the water inlet pipe 16, the water inlet pipe 16 is used for supplying sewage by a water pump 17, an electric heating part 19 is arranged in the middle chamber 5, the working temperature of the electric heating part 19 is 50-100 ℃, an ultrasonic water atomizer 8 is arranged at the bottom of the evaporation chamber 6, the evaporation chamber 6 is communicated with a blowing pipe 11, the blowing pipe 11 is communicated with a hot air blower 12, the outlet of the blowing pipe 11 penetrates into the evaporation chamber 6 and is aligned with the atomized water outlet of the ultrasonic water atomizer 8, the water inlet chamber 4 is connected with an air suction pipe 15, the air suction pipe 15 is communicated with an air draft blower, a return pipe, a return pump 20 is installed on the pipe of the return pipe 14.
When the low-temperature evaporative crystallizer is used for treating sewage, the sewage is firstly pumped into the water distribution pipe through the water inlet pipe under the action of the water pump, the water distribution pipe divides the sewage into a plurality of small fine flows and flows down to the filter cloth, under the gravity of the liquid and the guiding action of the filter cloth, the liquid tends to be thin and falls to the lower end of the filter cloth, flows onto the crystallization plate along the second baffle plate and then enters the evaporation chamber through the drain holes, in the evaporation chamber, the water atomizer can atomize the liquid, the water is quickly changed into gas under the action of hot blowing, the salt is separated out from the water, meanwhile, the air blowing pipe blows air, the air suction pipe sucks air to enable a negative pressure effect to be formed among the water inlet cavity, the middle cavity and the evaporation cavity, so that gas in the evaporation cavity sequentially passes through the second air hole, the crystallization cavity and the first air hole, then enters the water inlet cavity and is discharged through the air suction pipe; when gas passes through the crystallization cavity, the gas can contact the crystallization plate, because the crystallization cavity is heated, the temperature of the crystallization plate is higher, therefore, moisture can be evaporated to be absorbed by the suction pipe, salt components are separated out on the crystallization plate, and meanwhile, the reflux pump refluxes the liquid remained in the evaporation cavity to the water inlet pipe through the reflux pipe for circulating evaporation.
Claims (7)
1. Low temperature evaporation crystallizer, including the casing, its characterized in that: the shell is internally provided with a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate divide an inner cavity of the shell into a water inlet cavity, a middle cavity and an evaporation cavity, a plurality of layers of crystallization cavities are vertically arranged in the middle cavity, a bottom plate of each layer of crystallization cavity is a crystallization plate which is obliquely arranged, a top plate is filter cloth which is obliquely arranged, the first baffle plate is provided with a first air hole to communicate the crystallization cavity with the water inlet cavity, the second baffle plate is provided with a second air hole and a water drain hole to communicate the crystallization cavity with the evaporation cavity, a water distribution pipe is arranged on one side of the water inlet cavity above the filter cloth of each layer of crystallization cavity, the water distribution pipe is communicated with a water inlet pipe, a heating part is arranged in the middle cavity, a water atomizer is arranged in the evaporation cavity, the evaporation cavity is connected with a blowing pipe.
2. The low temperature evaporative crystallizer of claim 1: the method is characterized in that: the blowpipe is communicated with a hot air fan.
3. The cryogenic evaporative crystallizer of claim 1, wherein: the water distribution pipes are arranged in rows along the arrangement direction of the filter cloth.
4. The cryogenic evaporative crystallizer of claim 1, wherein: the crystallizing plate and the filter cloth have the same inclined direction.
5. The cryogenic evaporative crystallizer of claim 1, wherein: the shell, the first baffle plate, the second baffle plate and the crystallization plate are made of 306 or 316-grade stainless steel plates.
6. The cryogenic evaporative crystallizer of claim 1, wherein: the filter cloth is made of vinylon materials.
7. The cryogenic evaporative crystallizer of claim 1, wherein: the bottom of the evaporation chamber is provided with a return pipe, the return pipe is connected with a water inlet pipe, and a return pump is arranged on a pipeline of the return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910914880.6A CN110694287A (en) | 2019-09-26 | 2019-09-26 | Low-temperature evaporation crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910914880.6A CN110694287A (en) | 2019-09-26 | 2019-09-26 | Low-temperature evaporation crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110694287A true CN110694287A (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910914880.6A Pending CN110694287A (en) | 2019-09-26 | 2019-09-26 | Low-temperature evaporation crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110694287A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359237A (en) * | 2020-03-31 | 2020-07-03 | 刘杨 | Steam flow generator is stabilized in chemistry experiment |
| CN111389037A (en) * | 2020-03-31 | 2020-07-10 | 刘杨 | Stable chemical vapor flow generating device |
| CN114733225A (en) * | 2022-03-09 | 2022-07-12 | 福建省南仹生物科技有限公司 | Hyodeoxycholic acid draws and uses crystallizer |
-
2019
- 2019-09-26 CN CN201910914880.6A patent/CN110694287A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359237A (en) * | 2020-03-31 | 2020-07-03 | 刘杨 | Steam flow generator is stabilized in chemistry experiment |
| CN111389037A (en) * | 2020-03-31 | 2020-07-10 | 刘杨 | Stable chemical vapor flow generating device |
| CN111359237B (en) * | 2020-03-31 | 2022-01-14 | 浙江森太化工股份有限公司 | Steam flow generator is stabilized in chemistry experiment |
| CN114733225A (en) * | 2022-03-09 | 2022-07-12 | 福建省南仹生物科技有限公司 | Hyodeoxycholic acid draws and uses crystallizer |
| CN114733225B (en) * | 2022-03-09 | 2023-11-03 | 福建省南仹生物科技有限公司 | Crystallization tank for hyodeoxycholic acid extraction |
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