CN112225236A - Filtering, washing and drying device with leaching function and using method - Google Patents

Filtering, washing and drying device with leaching function and using method Download PDF

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Publication number
CN112225236A
CN112225236A CN201910632858.2A CN201910632858A CN112225236A CN 112225236 A CN112225236 A CN 112225236A CN 201910632858 A CN201910632858 A CN 201910632858A CN 112225236 A CN112225236 A CN 112225236A
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valve
vacuum
washing
drying
evaporation chamber
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Chinese (zh)
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张旭
李传松
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F5/00—Compounds of magnesium
    • C01F5/14—Magnesium hydroxide
    • C01F5/145—Purification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/80—After-treatment of the mixture
    • B01F23/808—Filtering the mixture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G3/00—Compounds of copper
    • C01G3/02—Oxides; Hydroxides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a filtering, washing and drying device with leaching function, which comprises a filter cylinder and a vacuum-pumping drying system: the vacuum-pumping drying system comprises a decompression evaporation chamber, a volatile component storage tank, a stirring system, a gas compression pump and an auxiliary valve. Methods of use of the apparatus are also disclosed. The device can save energy, save water, protect environment, efficiently implement the integrated operation of leaching, filtering, washing and drying, and has wide application prospect.

Description

Filtering, washing and drying device with leaching function and using method
Technical Field
The invention belongs to the field of chemical machinery, and particularly relates to a filtering, washing and drying device with a leaching function and a using method thereof.
Background
In the preparation process of products in biological medicine, chemical production and mineral processing, filtering, washing and drying are generally carried out in different devices, materials need to be transferred in different devices, the operation is complex, the devices are more, the occupied area is large, and due to an open system, the material loss, leakage and cross contamination are easily caused, and the production conditions are deteriorated by a part of volatile toxic substances.
At present, the internal structure of the existing filtering, drying and washing integrated machine is complex, the cost is high, the maintenance is complicated, the existing filtering, drying and washing integrated machine is only used for the production of food, pharmacy and fine chemical products, the batch is small, and the existing filtering, drying and washing integrated machine is difficult to use on a large scale in the fields of inorganic chemical industry, mineral processing and the like. Meanwhile, the facility needs additional washing water which is 3-4 times of the mass of the filtered materials, water production equipment and processes are increased, more washing waste liquid is generated, the washing waste liquid can be discharged only through concentration treatment, and energy consumption and cost are improved.
On the other hand, the volatile reagent leached minerals have great potential utilization value, for example, minerals such as copper oxide, zinc oxide and the like are leached and dissolved by ammonium carbonate, the solution is heated and then decomposed to generate copper oxide and zinc oxide, ammonium carbonate can be heated and completely volatilized and recovered, so that no reagent is consumed theoretically, and the cost is reduced. Finally, the common heavy metals in the common incineration sludge in environmental protection exist in the form of copper oxide, zinc oxide, cadmium oxide and nickel oxide, which are difficult to treat and become a troublesome problem, and ammine complexation is an effective method for removing ions of this type, but is not adopted due to ammonia pollution.
Disclosure of Invention
In order to solve the technical problems, the invention provides a filtering, washing and drying device with a leaching function and a using method thereof.
The technical scheme of the invention is as follows:
the filtering, washing and drying device with the leaching function comprises a vacuum filter cartridge (4) and a vacuum-pumping drying system A, wherein the vacuum-pumping drying system A comprises a reduced-pressure evaporation chamber, a volatile component storage tank, a stirring system and a gas compression pump, and further comprises a valve a, a valve b, a valve c, a valve e, a valve f, a valve h-1, a valve j-1, a valve n-1 and a valve k; the stirring system is positioned on the central shaft of the decompression evaporation chamber, the vacuum filter cylinder is arranged at the upper part of the decompression evaporation chamber and is connected with the upper part of the decompression evaporation chamber through a pipeline at the bottom of the vacuum filter cylinder, a gas inlet of the gas compression pump is connected with the top of the decompression evaporation chamber, a valve k is arranged on the pipeline, and an outlet of the gas compression pump is connected with the volatile component storage tank and a valve e; the liquid outlet of the volatile component storage tank is shunted by a pipeline through a valve b and is respectively connected with a valve a, a valve c and a valve h-1, wherein the valve c is connected with a liquefied water outlet, the valve a is positioned in the upper space in the decompression evaporation chamber, and the valve h-1 is connected to the upper space of the vacuum filter cylinder; a dried solid outlet valve f is arranged at the lower end of the decompression evaporation chamber; the vacuum filter cartridge is provided with a filter material outlet valve j-1; the vacuum filter cartridge and the gas inlet of the gas compression pump are connected through a pipeline, and a valve n-1 is installed on the pipeline.
Preferably, the number of the vacuum filter cartridges 4 configured with the vacuum drying system (A) is 1 or more, the vacuum filter cartridges are connected with 1 vacuum drying system (A) in the same parallel connection mode, and the n-1 valve, the h-1 valve and the j-1 valve installed on the parallel vacuum filter cartridges 4 are respectively an n-2 valve, an h-2 valve, a j-2 valve, an n-3 valve and an h-3 valve, namely the j-3 valve … …, so that the processing capacity of the vacuum drying system can be increased and the floor area of the equipment can be reduced.
The outer layer of the decompression evaporation chamber is provided with a vacuum heat insulation chamber which is connected to the gas inlet end of the gas compressor through a valve d, and the heat energy dissipation is greatly reduced by the vacuum heat insulation effect for evaporating the filtrate.
In the above scheme, the vacuum pump is connected to the pipeline where the valve e is located, the air compressor can generate a certain vacuum degree, but the efficiency is low, the vacuum degree is limited, and the defects of the air compressor pump can be overcome through the vacuum pump.
In above-mentioned scheme, the gas tightness in the vacuum filter section of thick bamboo is good, helps guaranteeing at later stage vacuum drying efficiency. The vacuum filter cartridge structure comprises a filter material inlet, a stirring device, a water bath heating sleeve, a filter plate isolation and a dry material discharge valve.
As preferred, the decompression evaporation chamber is at the volatile component holding tank skin to the container wall is separated, and volatile component holding tank installs relief valve g, and both ends are connected to volatile component holding tank and vacuum pump respectively through the pipeline, can the pressure release when the pressure is too high, especially when the device leakproofness is slightly poor, have a few gas enrichment in volatile component holding tank, and the pressure release can guarantee device safe operation, can reduce the compression pump load again.
In the above scheme, the volatile component storage tank structure comprises a steam inlet, a condensate outlet, a liquid storage chamber outer shell and a liquid storage chamber inner shell, wherein the liquid storage chamber outer shell is connected with the steam inlet and the liquefied liquid outlet, the bottom wall of the liquid storage chamber outer shell is connected with the decompression evaporation chamber, and the liquid storage chamber outer shell is connected with the liquid storage chamber inner shell to keep sealing. The volatile component storage tank adopting a special structure can achieve the following effects: 1) the gas in the reduced-pressure evaporation chamber has poor heat transfer effect, and can transfer heat to a small amount of undistilled liquid through the wall in time after heat is released by the liquefied liquid, so that the distillation efficiency is improved by secondary heating; 2) the bottom wall of the liquid storage chamber and the pressure reduction evaporation chamber have the same inclination angle, so that the bottom wall of the liquid storage chamber and the pressure reduction evaporation chamber can bear pressure uniformly, and the stability is improved; 3) the conical liquid storage chamber inner shell structure is beneficial to discharging.
Preferably, in the evaporation device, the outer shell of the liquid storage chamber and the inner shell of the liquid storage chamber are connected through threads, the sealing is kept through a gasket, the device can be disassembled or spliced, and scales possibly generated after long-time operation can be removed through disassembly and then be assembled and combined for reuse.
The filtering, washing and drying device with the leaching function can be used for filtering, washing and drying slurry, has the leaching function when a volatile reagent is used in the leaching reaction and a generated substance can be decomposed to generate a volatile substance after being heated, and is very useful for the operation using the volatility because the gas overflow and the environmental pollution are avoided in the sealing device.
The filtering, washing and drying method comprises the following steps:
1) in the material preparation stage, slurry is added into the vacuum filter cylinder, and the vacuum filter cylinder is heated and stirred;
2) in the vacuum-pumping stage of the vacuum heat-insulating chamber and the reduced-pressure evaporation chamber, opening a valve e, a valve k and a valve d, operating a vacuum pump, and discharging air in the vacuum heat-insulating chamber and the reduced-pressure evaporation chamber;
3) in the filtering stage, the valve d and the valve e are closed, the vacuum pump is closed, the stirring device is started to stir materials, the gas compression pump is operated, and the solution is filtered through the filter plate;
4) in the washing stage, the gas compression pump is kept running, the valve h-1 is opened, the distilled water is pumped into the vacuum filter cylinder, and the filter cake is washed;
5) in the drying and discharging stage, the gas compression pump is kept running, the valve n-1 is opened, the vacuum filter cartridge is sealed, water on the filter cake is evaporated, stirring is kept, and the valve j-1 is opened until the materials are dried, and the dried materials are discharged;
6) repeating the steps 1) to 5) to enter the next operation period, and repeating the steps.
The use method of leaching, filtering, washing and drying comprises the following steps:
1) in the material preparation stage, slurry and volatile leaching agent are added into a vacuum filter cylinder, heating and stirring are carried out, and the agent reacts with the slurry and is partially dissolved;
1) in the material preparation stage, slurry is added into the vacuum filter cylinder, and the vacuum filter cylinder is heated and stirred;
2) in the vacuum-pumping stage of the vacuum heat-insulating chamber and the reduced-pressure evaporation chamber, opening a valve e, a valve k and a valve d, operating a vacuum pump, and discharging air in the vacuum heat-insulating chamber and the reduced-pressure evaporation chamber;
3) in the filtering stage, the valve d and the valve e are closed, the vacuum pump is closed, the stirring device is started to stir materials, the gas compression pump is operated, and the solution is filtered through the filter plate;
4) in the washing stage, the gas compression pump is kept running, the valve h-1 is opened, the liquefied liquid is pumped into the vacuum filter cylinder, and the filter cake is washed;
5) in the drying and discharging stage, the operation of a gas compression pump is kept, a valve n-1 is opened, a vacuum filter cylinder is sealed, water on a filter cake is evaporated, a volatile leaching agent is volatilized to enter a liquid storage chamber, stirring is kept until the material is dried, a valve j-1 is opened, and the dried material is discharged;
6) repeating the steps 1) to 5) to enter the next operation period, and repeating the steps.
The invention has the advantages that: 1) the leaching, filtering, washing and drying can be carried out in the same device, thereby being beneficial to continuous production and saving equipment and investment; 2) no washing wastewater is generated, and the washing is performed without adding distilled water, so that the environment is protected, and the water is saved; 3) the device adopts a heat-insulating vacuum chamber, thereby reducing convection heat dissipation and saving energy consumption; 4) the device has compact structure and small floor area.
Drawings
FIG. 1 is a schematic view showing the structure of a filtration, washing and drying apparatus with leaching function according to the present invention.
FIG. 2 is a schematic view showing the construction of the filtration, washing and drying apparatus with leaching function according to the present invention in the case of two vacuum filtration systems connected in parallel.
FIG. 3 is a schematic view showing the structure of the volatile component storing bath 3 of the present invention.
Fig. 4 is a structural view of the stirring system 5 of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
example 1 construction of a filtration, washing, and drying apparatus with Leaching functionality
The filtration, washing and drying device with the leaching function as shown in figure 1 is constructed by the following structure: including vacuum filter cartridge 4 and evacuation drying system A system: the vacuumizing drying system A system comprises a decompression evaporation chamber 2, a volatile component storage tank 3, a stirring system 5, a gas compression pump 6, a valve a, a valve b, a valve c, a valve e, a valve f, a valve h-1, a valve j-1, a valve n-1 and a valve k; the vacuum evaporation chamber 2 is arranged on the outer layer of the volatile component storage tank 3 and is separated by a container wall, the stirring system 5 is positioned on a main shaft of a system A of the vacuum-pumping drying system, the vacuum filter cylinder 4 is arranged on the upper part of the vacuum evaporation chamber 2 and is connected with the upper part of the vacuum filter cylinder through a pipeline at the bottom of the vacuum filter cylinder, a gas inlet of the gas compression pump 6 is connected with the top of the vacuum evaporation chamber 2, a valve k is arranged on the pipeline, and an outlet of the gas compression pump 6 is connected with the volatile component storage tank 3; the liquid outlet of the volatile component storage tank 3 is shunted by a pipeline through a valve b and is respectively connected with a valve a, a valve c and a valve h-1, wherein the valve c is connected with a liquefied water outlet, the valve a is positioned in the upper space in the decompression evaporation chamber 2, and the valve h-1 is connected with the upper space of the vacuum filter cartridge 4; a dried solid outlet valve f is arranged at the lower end of the decompression evaporation chamber 2; the side wall of the vacuum filter cartridge 4 is provided with a filter material outlet valve j-1; the vacuum filter cartridges 4 and the gas inlet of the gas compression pump 6 are connected by a pipeline, and a valve n-1 is installed on the pipeline, in the embodiment, only 1 vacuum filter cartridge 4 is adopted, but because the operation of a plurality of vacuum filter cartridges 4 connected in parallel is consistent, the feasibility of simultaneous operation of a plurality of vacuum filter cartridges 4 is not influenced.
The outer layer of the decompression evaporation chamber 2 is provided with a vacuum heat insulation chamber 1 which is connected to the gas inlet end of a gas compressor 6 through a valve d, and the pipeline where the valve e is arranged is also connected with a vacuum pump 6.
The gas in the vacuum filter cartridge 4 has good tightness and comprises a filter material inlet 4-1, a stirring device 4-2, a water bath heating jacket 4-3, a suction filtration plate 4-4 and a valve j-1.
Volatile component holding tank 3 installs relief valve g, and relief valve g is located 2 outsides of decompression evaporation chamber, and both ends are connected to volatile component holding tank 3 and vacuum pump 7 respectively through the pipeline.
The volatile component storage tank 3 structure comprises a steam inlet 3-1, a liquefied liquid outlet 3-2, a liquid storage chamber outer shell 3-3 and a liquid storage chamber inner shell 3-4, wherein the side wall of the liquid storage chamber outer shell 3-3 is connected with the steam inlet 3-1 and the liquefied liquid outlet 3-2, the bottom wall of the liquid storage chamber outer shell 3-3 is connected with the decompression evaporation chamber 2, and the liquid storage chamber outer shell 3-3 is connected with the liquid storage chamber inner shell 3-4 to keep sealing.
The thin opening end between the outer shell 3-3 of the liquid storage chamber and the inner shell 3-4 of the liquid storage chamber is connected through screw threads, the thick opening end at the other end is provided with a screw ring 3-5 and a gasket 3-6 which can be engaged with the outer shell 3-3 of the liquid storage chamber, and the outer shell 3-3 of the liquid storage chamber and the inner shell 3-4 of the liquid storage chamber are kept sealed and can be disassembled or spliced.
The stirring system 5 structurally comprises a stirring motor 5-1, a main shaft 5-2 and a conical helical blade 5-3, wherein the conical angle of the conical helical blade 5-3 is exactly consistent with that of the inner shell 3-4 of the liquid storage chamber.
Example 2 50kg of 27% magnesium hydroxide slurry on a dry basis was filtered, washed and dried using the apparatus constructed in example 1
The magnesium hydroxide, which is derived from the reaction of sodium hydroxide and a magnesium chloride solution and contains a large amount of sodium chloride impurities, is filtered, washed and dried by using the device constructed in example 1, and the method comprises the following steps:
1) in the material preparation stage, 50kg of magnesium hydroxide slurry is added into the vacuum filter cylinder 4, and is heated to 95 ℃ through a water bath heating sleeve 4-3 and stirred;
2) in the stage of vacuumizing the vacuum heat-insulating chamber 1 and the reduced-pressure evaporation chamber 2, opening a valve e, a valve k and a valve d, operating a vacuum pump 6 to vacuumize for 5min-1, and discharging air in the vacuum heat-insulating chamber 1 and the reduced-pressure evaporation chamber 2;
3) in the filtering stage, the valve d and the valve e are closed, the vacuum pump 7 is closed, the stirring device 4-2 is started to stir the magnesium hydroxide slurry, the gas compression pump 6 is operated, and the solution is filtered by the filter plate 4-4;
4) in the washing stage, the gas compression pump 6 is kept running, the valve h-1 is opened, and distilled water is pumped into the vacuum filter barrel 4 for washing;
5) in the drying and discharging stage, the gas compression pump 6 is kept running, the valve n-1 is opened, the vacuum filter cartridge 4 is sealed, the residual water on the filter cake is evaporated, the stirring is kept, the valve j-1 is opened until the magnesium hydroxide is dried, and the dried magnesium hydroxide is discharged;
6) repeating the steps 1) to 5) to enter the next operation period, and repeating once.
After twice filtering, washing and drying operations, the content of sodium chloride in the obtained magnesium hydroxide dry material is less than 100ppm, and the water content of the magnesium hydroxide is less than 8%.
Example 3 an apparatus constructed as in example 1 was used to operate ammonium carbonate leaching of copper, filtering, washing and drying 50kg of copper oxide containing ore.
1) A material preparation stage, wherein ores containing copper oxide and ammonium carbonate solution are added into the vacuum filter cylinder 4, the materials are heated and stirred, and the ammonium carbonate reacts with the copper oxide and dissolves the copper oxide;
2) in the stage of vacuumizing the vacuum heat-insulating chamber 1 and the decompression evaporation chamber 2, opening a valve e, a valve k and a valve d, operating a vacuum pump 7, and exhausting air in the vacuum heat-insulating chamber 1 and the decompression evaporation chamber 2;
3) in the filtering stage, the valve d and the valve e are closed, the vacuum pump 7 is closed, the stirring device 4-2 is started to stir the materials, the gas compression pump 6 is operated, and the solution is filtered by the filter plate 4-4;
4) in the washing stage, the gas compression pump 6 is kept running, the valve h-1 is opened, the condensed ammonium carbonate solution is pumped into the vacuum filter cylinder 4, and the filter cake is washed;
5) in the drying and discharging stage, the gas compression pump 6 is kept running, the valve n-1 is opened, the vacuum filter cartridge 4 is sealed, ammonium carbonate on the filter cake is evaporated, stirring is kept, the valve j-1 is opened until the materials are dried, and the dried materials are discharged;
6) repeating the steps 1) to 5) to enter the next operation period, and repeating once.
The copper oxide recovery rate obtained by twice leaching, filtering, washing and drying operations is more than 85%, and the leached residues have no obvious ammonia smell.
Example 5 the apparatus constructed in example 1 was used to leach, filter, wash and dry 50kg of incineration sludge containing excess copper, zinc and cadmium heavy metals
1) In the material preparation stage, sludge and ammonium carbonate solution are added into the vacuum filter cylinder 4, the mixture is heated and stirred, and the ammonium carbonate reacts with the incineration sludge and dissolves copper oxide, zinc oxide and cadmium oxide;
2) in the stage of vacuumizing the vacuum heat-insulating chamber 1 and the decompression evaporation chamber 2, opening a valve e, a valve k and a valve d, operating a vacuum pump 7, and exhausting air in the vacuum heat-insulating chamber 1 and the decompression evaporation chamber 2;
3) in the filtering stage, the valve d and the valve e are closed, the vacuum pump 7 is closed, the stirring device 4-2 is started to stir the materials, the gas compression pump 6 is operated, and the solution is filtered by the filter plate 4-4;
4) in the washing stage, the gas compression pump 6 is kept running, the valve h-1 is opened, the condensed ammonium carbonate solution is pumped into the vacuum filter cylinder 4, and the filter cake is washed;
5) in the drying and discharging stage, the gas compression pump 6 is kept running, the valve n-1 is opened, the vacuum filter cartridge 4 is sealed, ammonium carbonate on the filter cake is evaporated, stirring is kept, the valve j-1 is opened until the materials are dried, and the dried materials are discharged;
6) repeating the steps 1) to 5) to enter the next operation period, and repeating once.
After twice leaching, filtering, washing and drying operations, the copper, zinc and cadmium in the obtained incineration mud are all reduced by more than 80%.

Claims (10)

1. Have filtration, washing, drying device who leaches the function concurrently, its characterized in that includes vacuum filter section of thick bamboo (4) and evacuation drying system (A) system: the vacuumizing drying system (A) comprises a decompression evaporation chamber (2), a volatile component storage tank (3), a stirring system (5), a gas compression pump (6), a valve (a), a valve (b), a valve (c), a valve (e), a valve (f), a valve (k), a valve (h-1), a valve (j-1) and a valve (n-1); the stirring system (5) is positioned on a central shaft of the decompression evaporation chamber (2), the vacuum filter cylinder (4) is arranged at the upper part of the decompression evaporation chamber (2) and is connected with the top of the decompression evaporation chamber (2) through a pipeline at the bottom of the vacuum filter cylinder, a gas inlet of the gas compression pump (6) is connected with the top of the decompression evaporation chamber (2), a valve (k) is arranged on the pipeline, and an outlet of the gas compression pump (6) is connected with the volatile component storage tank (3) and the valve (e); the liquid outlet of the volatile component storage tank (3) is shunted through a pipeline of a valve b and is respectively connected with a valve a, a valve c and a valve h-1, wherein the valve (c) is connected with a liquefied liquid outlet, the valve (a) is positioned in the upper space in the decompression evaporation chamber (2), and the valve h-1 is connected to the upper space of the vacuum filter cartridge (4); a dried solid outlet valve (f) is arranged at the lower end of the decompression evaporation chamber (2); the vacuum filter cylinder (4) is provided with a filter material outlet valve (j-1); the vacuum filter cartridge (4) is connected with a gas inlet of the gas compression pump (6) through a pipeline, and a valve (n-1) is arranged on the pipeline;
the number of the vacuum filter cartridges (4) configured with the vacuum-pumping drying system (A) is 1 or more, and the vacuum filter cartridges are connected with 1 vacuum-pumping drying system (A) in the same parallel connection mode.
2. The filtration, washing and drying apparatus with leaching function as claimed in claim 1, wherein: the outer layer of the decompression evaporation chamber (2) is provided with a vacuum heat insulation chamber (1) which is connected to the gas inlet end of a gas compressor (6) through a valve (d).
3. The filtration, washing and drying apparatus having leaching function as claimed in claim 1 and claim 2, wherein: and the pipeline where the valve (e) is positioned is also connected with a vacuum pump (6).
4. The filtration, washing and drying apparatus having leaching function as claimed in claim 1 and claim 2, wherein: the gas in the vacuum filter cartridge (4) has good tightness and comprises a filter material inlet (4-1), a stirring device (4-2), a water bath heating sleeve (4-3), a vacuum filter plate (4-4) and a valve (j-1).
5. A filtration, washing and drying apparatus with leaching function, as claimed in claim 1, wherein: volatile component holding tank (3) is in decompression evaporation chamber (2) to the container wall is separated, and relief valve (g) are installed in volatile component holding tank (3), and relief valve (g) are located decompression evaporation chamber (2) outside, and both ends are connected to volatile component holding tank (3) and vacuum pump (7) respectively through the pipeline.
6. The filtration, washing and drying apparatus with leaching function as claimed in claim 1 and claim 4, wherein: volatile component holding tank (3) structure includes steam air inlet (3-1), liquefied liquid export (3-2), stock solution outdoor shell (3-3), stock solution inner shell (3-4), stock solution outdoor shell (3-3) lateral wall is connected with steam air inlet (3-1), liquefied liquid export (3-2), stock solution outdoor shell (3-3) diapire is connected with decompression evaporation chamber (2), stock solution outdoor shell (3-3) link together with stock solution inner shell (3-4), keep sealed.
7. The filtration, washing and drying apparatus with leaching function as claimed in claim 1, wherein: the lower part thin opening end between the liquid storage chamber outer shell (3-3) and the liquid storage chamber inner shell (3-4) is connected through threads, the upper part thick opening end at the other end is provided with a screw ring (3-5) and a gasket (3-6) which can be engaged with the liquid storage chamber outer shell (3-3), and the liquid storage chamber outer shell (3-3) and the liquid storage chamber inner shell (3-4) are kept sealed, detachable or spliced.
8. The filtering, washing and drying device with leaching function as claimed in claim 1, claim 6 and claim 7, wherein: the stirring system (5) structurally comprises a stirring motor (5-1), a main shaft (5-2) and a conical helical blade (5-3), and the conical angle of the conical helical blade (5-3) is exactly consistent with that of the inner shell (3-4) of the liquid storage chamber.
9. The filtering, washing and drying device with leaching function as claimed in claim 1 to 8, wherein the filtering, washing and drying operations are performed according to the following steps:
1) in the material preparation stage, the material slurry is added into the vacuum filter cylinder (4), and the material slurry is heated and stirred;
2) in the vacuum-pumping stage of the vacuum heat-insulating chamber (1) and the reduced-pressure evaporation chamber (2), opening a valve (e), a valve (k) and a valve (d), operating a vacuum pump (7) and discharging air in the vacuum heat-insulating chamber (1) and the reduced-pressure evaporation chamber (2);
3) in the filtering stage, the valve (d) and the valve (e) are closed, the vacuum pump (7) is closed, the stirring device (4-2) is started to stir materials, the gas compression pump (6) is operated, and the solution is filtered through the filter plate (4-4);
4) in the washing stage, the gas compression pump (6) is kept running, the valve (h-1) is opened, the distilled water is pumped into the vacuum filter cylinder (4), and the filter cake is washed;
5) in the drying and discharging stage, the gas compression pump (6) is kept running, the valve (n-1) is opened, the vacuum filter cartridge (4) is sealed, water on the filter cake is evaporated, stirring is kept until the material is dried, the valve (j-1) is opened, and the dried material is discharged;
6) repeating the steps 1) to 5) to enter the next operation period, and repeating the steps.
10. The filtering, washing and drying device with leaching function as claimed in claim 1 to 8, wherein the leaching, filtering, washing and drying operations are performed according to the following steps:
1) a material preparation stage, namely adding slurry and volatile leaching agent into the vacuum filter cylinder (4), heating and stirring, and reacting the agent with the slurry and partially dissolving;
2) in the vacuum-pumping stage of the vacuum heat-insulating chamber (1) and the reduced-pressure evaporation chamber (2), opening a valve (e), a valve (k) and a valve (d), operating a vacuum pump (7) and discharging air in the vacuum heat-insulating chamber (1) and the reduced-pressure evaporation chamber (2);
3) in the filtering stage, the valve (d) and the valve (e) are closed, the vacuum pump (7) is closed, the stirring device (4-2) is started to stir materials, the gas compression pump (6) is operated, and the solution is filtered through the filter plate (4-4);
4) in the washing stage, the gas compression pump (6) is kept running, the valve (h-1) is opened, the liquefied liquid is pumped into the vacuum filter cylinder (4), and the filter cake is washed;
5) in the drying and discharging stage, the gas compression pump (6) is kept running, the valve (n-1) is opened, the vacuum filter cartridge (4) is sealed, the volatile components on the filter cake are evaporated, stirring is kept, the valve (j-1) is opened when the drying of the material is finished, and the dried material is discharged;
6) repeating the steps 1) to 5) to enter the next operation period, and repeating the steps.
CN201910632858.2A 2019-07-14 2019-07-14 Filtering, washing and drying device with leaching function and using method Withdrawn CN112225236A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113967658A (en) * 2021-09-27 2022-01-25 海盐凯达纺织新材料股份有限公司 Terylene textile secondary recycling treatment device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113967658A (en) * 2021-09-27 2022-01-25 海盐凯达纺织新材料股份有限公司 Terylene textile secondary recycling treatment device

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