CN113337339A - Separation device and separation method for oil wax and grease in diatomite - Google Patents
Separation device and separation method for oil wax and grease in diatomite Download PDFInfo
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- CN113337339A CN113337339A CN202110560057.7A CN202110560057A CN113337339A CN 113337339 A CN113337339 A CN 113337339A CN 202110560057 A CN202110560057 A CN 202110560057A CN 113337339 A CN113337339 A CN 113337339A
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- diatomite
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- oil
- sealing cover
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 239000004519 grease Substances 0.000 title claims abstract description 42
- 238000000926 separation method Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 238000005086 pumping Methods 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 23
- 230000008018 melting Effects 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 12
- 239000005909 Kieselgur Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 50
- 235000019198 oils Nutrition 0.000 description 50
- 239000002994 raw material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 235000019774 Rice Bran oil Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000008165 rice bran oil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/10—Refining fats or fatty oils by adsorption
-
- 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
- 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
- B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- 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
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/06—Production of fats or fatty oils from raw materials by pressing
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/12—Production of fats or fatty oils from raw materials by melting out
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a device and a method for separating wax and grease in diatomite, comprising a melting barrel and a filter, wherein a first jacket is arranged outside the side wall of the melting barrel; the filter comprises a filter cartridge, an upper sealing cover and a lower sealing cover which are respectively arranged at the top and the bottom of the filter cartridge, and a second jacket is arranged outside the side wall of the filter cartridge; the inside of the filter cartridge is provided with a filter bottom plate which can be opened and closed, and the filter bottom plate is provided with filter holes; a mixing outlet is arranged at the center of the bottom of the lower sealing cover and is connected to a vacuum buffer tank through a movable hose, and an air pumping hole at the top of the vacuum buffer tank is connected with a vacuum pump through an air pumping pipe; the upper sealing cover is provided with a steam inlet which is communicated with a steam outlet of the steam generator through a steam pipeline. The separation device and the separation method adopted by the invention are convenient to operate, time-saving and labor-saving, have higher separation efficiency and better separation effect, and are more environment-friendly and energy-saving.
Description
Technical Field
The invention relates to the technical field of oil production equipment, in particular to a device and a method for separating oil wax and grease in diatomite.
Background
In the production process of oil, such as cottonseed oil and rice bran oil, diatomite is usually added as a filter aid in order to filter the crystallized oil more quickly and fully, but the treatment of the filtered diatomite has many problems. The content of wax and grease in the filtered diatomite is generally between 60 and 80 percent, the oil and wax grease in the diatomite is separated by adopting the traditional technology, and ether and acetone are usually added for dissolving, so that the grease, grease and diatomite are separated, but the method is time-consuming and labor-consuming for separation, and a large amount of chemical reagents are consumed (usually added according to the amount of 1: 1: 1), so that a large amount of raw material consumption is brought to a producer, the treatment cost is very high, the economic burden of the producer is increased, and the separated diatomite needs to be washed for many times, so that a large amount of waste liquid is generated, and the environment is polluted.
Disclosure of Invention
The invention aims to provide a device and a method for separating oil and wax in diatomite, which can effectively separate the oil and wax in the diatomite and have the advantages of good separation effect, low cost, environmental protection and high efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the separation device for the wax and the grease in the diatomite is designed, and comprises a melting barrel and a filter, wherein a first jacket is arranged outside the side wall of the melting barrel, heat conduction oil is filled in the first jacket, and a feed opening is formed in the bottom of the melting barrel;
the filter comprises a filter cartridge, an upper sealing cover and a lower sealing cover which are respectively arranged at the top and the bottom of the filter cartridge, wherein a feed port is formed in the upper sealing cover and is communicated with the feed port through a feed pipe, and the feed pipe is provided with a feed valve;
a second jacket is arranged outside the side wall of the filter cylinder, and heat conduction oil is filled in the second jacket; the inside of the filter cartridge is provided with a filter bottom plate which can be opened and closed, and the filter bottom plate is provided with filter holes; one side of the lower sealing cover is hinged with the bottom of the filter cartridge, and the other side of the lower sealing cover is fixed with the filter cartridge through a clamping piece; a mixing outlet is arranged in the center of the bottom of the lower sealing cover and connected to a vacuum buffer tank through a movable hose, and an air pumping hole in the top of the vacuum buffer tank is connected with a vacuum pump through an air pumping pipe; the mixing outlet is detachably connected with the movable hose through a sealing joint, and a valve is arranged at the sealing joint;
the upper sealing cover is provided with a steam inlet which is communicated with a steam outlet of the steam generator through a steam pipeline.
In the technical scheme, the diatomite to be processed is heated by arranging the melting barrel and the first jacket, so that oil and wax fat in the diatomite are preliminarily melted, the primarily melted diatomite enters the filter cylinder, the filter cylinder is further heated by the second jacket, the oil and wax fat in the diatomite keep a melting state, the filter cylinder is vacuumized by the vacuum buffer tank and the vacuum pump, and the oil and wax fat in the diatomite flow out along with air and flow into the vacuum buffer tank to realize gas-liquid separation; when the vacuum pumping is carried out, water vapor is introduced into the filter cylinder through the vapor pipeline, and the oil and the wax fat can leave along with the water vapor in the process that the water vapor passes through the diatomite, so that the oil and the wax fat are further separated. After the vacuumizing process is finished, the lower sealing cover can be opened, water vapor is continuously introduced into the filter cartridge, and the diatomite is blown and swept, so that the oil wax fat in the diatomite is further discharged along with the steam, and the content of the oil wax fat is further reduced.
Preferably, one side of the filter base plate is hinged to the bottom end of the inner wall of the filter cartridge, the fixing holes are formed in the circumference of the filter base plate at equal intervals, bolt holes are formed in the positions, corresponding to the fixing holes, of the bottom end of the inner wall of the filter cartridge respectively, fixing bolts are arranged in the fixing holes and the corresponding bolt holes in a penetrating mode respectively, and the filter base plate is fixed to the bottom end of the inner wall of the filter cartridge through the fixing bolts. Through set up the filter base plate in cartridge filter bottom, set up the filtration pore on the filter base plate, the air and vapor of being convenient for flow to the vacuum buffer tank through diatomaceous earth, oil wax fat in the diatomaceous earth can flow out along with air and vapor together. The filter base plate sets to the structure that can open and shut, and one side is articulated with the cartridge filter, and other positions adopt fixing bolt and cartridge filter fixed mounting together, after finishing evacuation and steam sweep, can place the small handcart in the cartridge filter below, will filter the base plate and open, and diatomaceous earth wherein just can directly fall into the small handcart, the removal of the diatomaceous earth after being convenient for handle, the unloading of the diatomaceous earth of follow-up treating of being convenient for simultaneously.
Preferably, the vacuum pump is a water circulation vacuum pump.
Preferably, the cooling device further comprises a cooling tank, wherein a lower liquid outlet of the vacuum buffer tank is communicated with the cooling tank through a liquid outlet pipe and a gear pump and is used for pumping the oil wax grease in the vacuum buffer tank into the cooling tank. And cooling and solidifying the oil wax grease subjected to vacuum pumping separation in a cooling box to wait for subsequent processing.
Preferably, a sealing ring is arranged at the edge of the lower sealing cover corresponding to the bottom of the filter cylinder. The sealing connection between the lower sealing cover and the bottom of the filter cylinder is convenient.
Preferably, the mesh number of the filtering holes is 160-180 meshes.
The invention also relates to a method for separating the oil wax and the grease in the diatomite, which adopts the separation device and concretely comprises the following steps:
(1) squeezing: the method comprises the following steps of (1) packaging diatomite to be separated into small bags, neatly stacking the small bags and putting the small bags into a squeezing cylinder of a squeezer, wherein the side wall of the squeezing cylinder of the squeezer is provided with squeezing holes; setting the initial pressure of the squeezer to be below 100 kilograms, uniformly increasing the initial pressure to 260 kilograms, squeezing out grease and partial wax fat in the diatomite, pumping the squeezed grease into a crystallizing tank, recrystallizing and filtering to obtain qualified grease; at this time, the pressed diatomite also contains 28 to 32 percent of oil wax grease.
By adopting a cylindrical squeezer, the diatomite filtered in the grease production process can be preliminarily squeezed to extrude most of oil and wax grease.
(2) Melting: removing the bag from the diatomite squeezed in the step (1), and filling the diatomite into a melting barrel; the diatomite in the melting barrel is heated to 80-100 ℃ through the heat conducting oil in the first jacket, so that the oil wax grease in the diatomite is melted.
(3) And (3) filtering: the diatomite heated in the step (2) enters a filter cylinder of the filter through a feeding pipe and is arranged on a filter bottom plate; the lower sealing cover of the filter cylinder is closed and covered, and the diatomite in the filter cylinder is further heated through the heat conduction oil in the second jacket, so that the temperature of the diatomite is kept between 80 and 100 ℃; and (3) starting a steam generator, conveying 150-160 ℃ steam into the filter cartridge through a steam pipeline, simultaneously starting a vacuum pump, and pumping out air in the filter cartridge to ensure that the oil wax grease in the diatomite sequentially passes through the filter holes, the mixing outlet and the movable hose along with the steam to enter the vacuum buffer tank, thereby realizing gas-liquid separation.
(4) And (3) post-treatment: after the treatment in the step (3), placing the trolley below the filter cartridge, opening a lower sealing cover and a filter bottom plate of the filter cartridge, and allowing the diatomite in the filter cartridge to fall into the trolley, and removing and storing the diatomite for later recycling; and pumping the oil wax grease in the vacuum buffer tank into a cooling box through a gear pump to wait for subsequent processing.
Preferably, the diameter of the extrusion holes in the step (1) is 1mm, and the density is 1000/m2。
Preferably, after the vacuum pumping in the step (3) is finished, the lower sealing cover of the filter cylinder is opened, water vapor is continuously introduced, and the diatomite in the filter cylinder is purged for 8-10 minutes, so that the residual oil and wax grease in the diatomite is discharged along with the vapor, and the content of the oil and wax grease in the diatomite is further reduced.
The invention has the beneficial effects that:
1. the separation device and the separation method for the diatomite and the oil wax fat are more convenient to operate, time-saving and labor-saving, and higher in separation efficiency; the heat conduction oil is adopted for heating, chemical additives in the traditional technology are not adopted, the separation cost can be effectively reduced, the raw material consumption is reduced, no waste water is generated, and the environment is protected and the energy is saved;
2. the content of the oil wax fat in the diatomite treated by the separation method can be reduced to 0.1-0.2%, and the separated diatomite can be reused, so that the production cost of the oil can be effectively saved, and the utilization rate of the raw materials can be improved; the pure wax separated by the method has higher price than the wax containing diatomite, and one ton of the pure wax is higher than 3000-4000 yuan, so that the benefit of a factory is greatly improved.
Drawings
FIG. 1 is a schematic view showing the structure of a device for separating oil and wax from diatomaceous earth according to the present invention;
FIG. 2 is a schematic view of the internal structure of the filter cartridge;
FIG. 3 is a schematic view of the construction of the filter bed;
FIG. 4 is a schematic view of the press configuration;
reference numerals: 1 melting barrel, 2 diatomite and 3 first jacket; a filter cartridge 4, an upper sealing cover 5, a lower sealing cover 6, a feeding pipe 7 and a feeding valve 8; 9 a second jacket, 10 a filtering bottom plate and 11 filtering holes; 12 clamping pieces, 13 movable hoses, 14 vacuum buffer tanks, 15 exhaust pipes and 16 vacuum pumps; 17 steam pipe, 18 steam generator, 19 fixing bolt, 20 cooling box, 21 gear pump, 22 press cylinder and 23 extrusion hole.
Detailed Description
The following examples are given to illustrate specific embodiments of the present invention, but are not intended to limit the scope of the present invention in any way. The elements of the apparatus referred to in the following examples are conventional elements of the apparatus unless otherwise specified.
Example 1: a separation device for oil wax and grease in diatomite is disclosed, referring to figures 1-3, and comprises a melting barrel 1 and a filter, wherein a first jacket 3 is arranged outside the side wall of the melting barrel 1, heat conducting oil is filled in the first jacket 3, and a feed opening is arranged at the bottom of the melting barrel 1.
The filter includes cartridge filter 4, sets up sealed lid 5 and the sealed lid 6 down at the last of cartridge filter 4 top and bottom respectively, has seted up the feed inlet on sealed lid 5, and the feed inlet is linked together through inlet pipe 7 and feed opening, is equipped with feed valve 8 on inlet pipe 7.
A second jacket 9 is arranged outside the side wall of the filter cartridge 4, and heat conduction oil is filled in the second jacket 9; a filter base plate 10 which can be opened and closed is arranged in the filter cartridge 4, and filter holes 11 are arranged on the filter base plate 10; one side of the lower sealing cover 6 is hinged with the bottom of the filter cartridge 4, and the other side is fixed with the filter cartridge through a clamping piece 12, wherein the clamping piece 12 is an existing equipment element; a mixing outlet is arranged at the center of the bottom of the lower sealing cover 6 and is connected to a vacuum buffer tank 14 through a movable hose 13, and an air pumping hole at the top of the vacuum buffer tank 14 is connected with a vacuum pump 16 through an air pumping pipe 15; the mixing outlet is detachably connected with the movable hose 13 through a sealing joint, and a valve is arranged at the sealing joint; sealing joint and flexible hose 13 are for dismantling being connected, when needs carry out the evacuation operation, are connected flexible hose 13 and sealing joint, open the valve can, after the evacuation operation finishes, can tear flexible hose 13 down, the opening of the sealed lid 6 of being convenient for down to and be convenient for unload of diatomaceous earth 2 in the cartridge filter 4.
One side of filtering bottom plate 10 is articulated mutually with the inner wall bottom of cartridge filter 4, has seted up the fixed orifices at the circumference equidistance of filtering bottom plate 10, is equipped with the bolt hole respectively in the position that the inner wall bottom of cartridge filter 4 corresponds the fixed orifices, wears to be equipped with fixing bolt 19 in fixed orifices and the bolt hole that corresponds respectively, and filtering bottom plate 10 passes through fixing bolt 19 to be fixed in the inner wall bottom of cartridge filter 4. When the diatomite needs to be filled into the filter cartridge 4, the filter base plate 10 is fixed through the fixing bolt 19, and the feeding valve 8 is opened to realize feeding; after the vacuumizing operation is finished, the lower sealing cover 6 is opened, steam purging operation is performed again, then the fixing bolt 19 can be taken down, the filtering bottom plate 10 is opened, the diatomite in the filter cartridge 4 can fall down and is caught by a trolley below to realize discharging, and then the filtering bottom plate 10 is fixed to perform next round of diatomite separation operation.
The cooling box 20 is further included, and a lower liquid outlet of the vacuum buffer tank 14 is communicated with the cooling box 20 through a liquid outlet pipe and a gear pump 21, and is used for pumping the oil wax grease in the vacuum buffer tank 14 into the cooling box 20.
The upper sealing cover 5 is provided with a steam inlet which is communicated with a steam outlet of a steam generator 18 through a steam pipeline 17.
Wherein the vacuum pump 16 is a water circulation vacuum pump; a sealing ring is arranged at the edge of the lower sealing cover 6 corresponding to the bottom of the filter cylinder 4; the mesh number of the filtering holes 11 is 160-180 meshes.
Example 2: a method for separating oil wax fat from diatomite adopts the separation device in the embodiment 1, and specifically comprises the following steps:
(1) squeezing: the diatomite to be separated is divided into small bags, the small bags are orderly stacked and placed into a squeezing cylinder 22 of a squeezer, and the side wall of the squeezing cylinder 22 of the squeezer is provided with an extrusion hole 23, which is shown in figure 4; setting the initial pressure of a squeezer to be below 100 kilograms, uniformly increasing the initial pressure to 260 kilograms, squeezing out grease and partial wax fat in the diatomite, pumping the squeezed grease into a crystallizing tank, recrystallizing and filtering to obtain qualified grease; at this time, the pressed diatomite also contains 28 to 32 percent of oil wax grease; wherein the diameter of the extrusion hole is 1mm, and the density is 1000/m2. The squeezer can adopt a 90# squeezer in a vertical barrel shape, and squeezing power is provided by an air cylinder or a hydraulic cylinder; offer extrusion hole 23 with the lateral wall of squeezing cylinder 22 for oil and wax fat in diatomaceous earth 2 can be extruded, squeeze (the pouch is the material that liquid can pass through) again with diatomaceous earth dress in the pouch, can avoid diatomaceous earth to spill from extruding the hole, guarantee to squeeze the effect simultaneously.
(2) Melting: removing the bag from the diatomite squeezed in the step (1), and filling the diatomite into a melting barrel; the diatomite in the melting barrel is heated to 80-100 ℃ through the heat conducting oil in the first jacket, so that the oil wax grease in the diatomite is melted.
(3) And (3) filtering: the diatomite heated in the step (2) enters a filter cylinder of the filter through a feeding pipe and is arranged on a filter bottom plate; the lower sealing cover of the filter cylinder is closed and covered, and the diatomite in the filter cylinder is further heated through the heat conduction oil in the second jacket, so that the temperature of the diatomite is kept between 80 and 100 ℃; starting a steam generator, conveying 150-160 ℃ steam into the filter cartridge through a steam pipeline, simultaneously starting a vacuum pump, and pumping out air in the filter cartridge to ensure that the oil wax grease in the diatomite sequentially passes through the filter holes, the mixing outlet and the movable hose along with the steam to enter the vacuum buffer tank to realize gas-liquid separation; and after the vacuumizing is finished, opening a lower sealing cover of the filter cylinder, continuously introducing water vapor, and purging the diatomite for 8-10 minutes.
(4) And (3) post-treatment: after the treatment in the step (3), placing the trolley below the filter cartridge, opening a lower sealing cover and a filter bottom plate of the filter cartridge, and allowing the diatomite in the filter cartridge to fall into the trolley, and removing and storing the diatomite for later recycling; and pumping the oil wax grease in the vacuum buffer tank into a cooling box through a gear pump to wait for subsequent processing.
Through the separation treatment of the invention, the oil, wax and grease content of the diatomite can be reduced to 0.1-0.2%, the treated diatomite can be reused, and the separated pure wax has higher price than the wax containing diatomite, and is more than 3000-4000 yuan per ton, thereby greatly improving the benefit of a factory.
Compared with the traditional method for separating the oil wax grease from the diatomite, the method only adopts heat conduction oil to heat the raw materials, does not add any chemical reagent, can greatly reduce the separation cost and the raw material consumption, does not need water washing, and does not generate wastewater; the separation method adopted by the invention is convenient to operate, time-saving and labor-saving, has higher separation efficiency and better separation effect, and is more environment-friendly and energy-saving.
While the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various changes can be made in the specific parameters of the embodiments without departing from the spirit of the present invention, and that various specific embodiments can be made, which are common variations of the present invention and will not be described in detail herein.
Claims (9)
1. The device for separating the wax and the grease in the diatomite is characterized by comprising a melting barrel and a filter, wherein a first jacket is arranged outside the side wall of the melting barrel, heat conduction oil is filled in the first jacket, and a feed opening is formed in the bottom of the melting barrel;
the filter comprises a filter cartridge, an upper sealing cover and a lower sealing cover which are respectively arranged at the top and the bottom of the filter cartridge, wherein a feed port is formed in the upper sealing cover and is communicated with the feed port through a feed pipe, and the feed pipe is provided with a feed valve;
a second jacket is arranged outside the side wall of the filter cylinder, and heat conduction oil is filled in the second jacket; the inside of the filter cartridge is provided with a filter bottom plate which can be opened and closed, and the filter bottom plate is provided with filter holes; one side of the lower sealing cover is hinged with the bottom of the filter cartridge, and the other side of the lower sealing cover is fixed with the filter cartridge through a clamping piece; a mixing outlet is arranged in the center of the bottom of the lower sealing cover and connected to a vacuum buffer tank through a movable hose, and an air pumping hole in the top of the vacuum buffer tank is connected with a vacuum pump through an air pumping pipe; the mixing outlet is detachably connected with the movable hose through a sealing joint, and a valve is arranged at the sealing joint;
the upper sealing cover is provided with a steam inlet which is communicated with a steam outlet of the steam generator through a steam pipeline.
2. The device for separating oil from wax in diatomite as claimed in claim 1, wherein one side of the filtering bottom plate is hinged to the bottom end of the inner wall of the filtering cylinder, fixing holes are formed on the circumference of the filtering bottom plate at equal intervals, bolt holes are respectively formed in the bottom end of the inner wall of the filtering cylinder at positions corresponding to the fixing holes, fixing bolts are respectively inserted into the fixing holes and the corresponding bolt holes, and the filtering bottom plate is fixed to the bottom end of the inner wall of the filtering cylinder through the fixing bolts.
3. The apparatus for separating oil and wax from diatomite of claim 1, wherein the vacuum pump is a water circulation vacuum pump.
4. The apparatus for separating oil and wax from diatomite as claimed in claim 1, further comprising a cooling tank, wherein the lower liquid outlet of the vacuum buffer tank is communicated with the cooling tank through a liquid outlet pipe and a gear pump, and is used for pumping the oil and wax from the vacuum buffer tank into the cooling tank.
5. The apparatus for separating oil from wax in diatomite as claimed in claim 1, wherein a sealing ring is provided at the edge of said lower sealing cover corresponding to the bottom of the filter cartridge.
6. The device for separating oil from wax in diatomite as claimed in claim 1, wherein the number of said filtering holes is 160-180 meshes.
7. A method for separating oil wax and fat from diatomite, which is characterized in that the separation device in claim 1 is adopted, and the method comprises the following steps:
(1) squeezing: the method comprises the following steps of (1) packaging diatomite to be separated into small bags, neatly stacking the small bags and putting the small bags into a squeezing cylinder of a squeezer, wherein the side wall of the squeezing cylinder of the squeezer is provided with squeezing holes; setting the initial pressure of the squeezer to be below 100 kilograms, uniformly increasing the initial pressure to 260 kilograms, squeezing out grease and partial wax fat in the diatomite, pumping the squeezed grease into a crystallizing tank, recrystallizing and filtering to obtain qualified grease; at this time, the pressed diatomite also contains 28 to 32 percent of oil wax grease;
(2) melting: removing the bag from the diatomite squeezed in the step (1), and filling the diatomite into a melting barrel; heating the diatomite in the melting barrel to 80-100 ℃ through heat conducting oil in the first jacket, so that oil wax grease in the diatomite is melted;
(3) and (3) filtering: the diatomite heated in the step (2) enters a filter cylinder of the filter through a feeding pipe and is arranged on a filter bottom plate; the lower sealing cover of the filter cylinder is closed and covered, and the diatomite in the filter cylinder is further heated through the heat conduction oil in the second jacket, so that the temperature of the diatomite is kept between 80 and 100 ℃; starting a steam generator, conveying 150-160 ℃ steam into the filter cartridge through a steam pipeline, simultaneously starting a vacuum pump, and pumping out air in the filter cartridge to ensure that the oil wax grease in the diatomite sequentially passes through the filter holes, the mixing outlet and the movable hose along with the steam to enter the vacuum buffer tank to realize gas-liquid separation;
(4) and (3) post-treatment: after the treatment in the step (3), placing the trolley below the filter cartridge, opening a lower sealing cover and a filter bottom plate of the filter cartridge, and allowing the diatomite in the filter cartridge to fall into the trolley, and removing and storing the diatomite for later recycling; and pumping the oil wax grease in the vacuum buffer tank into a cooling box through a gear pump to wait for subsequent processing.
8. The method for separating oil and wax in diatomaceous earth as claimed in claim 7, wherein the diameter of the extrusion hole in step (1) is 1mm and the density is 1000 pieces/m2。
9. The method for separating oil and wax in diatomite as claimed in claim 7, wherein after the vacuum pumping in step (3) is finished, the lower sealing cover of the filter cartridge is opened, and the steam is continuously introduced to purge the diatomite therein for 8-10 minutes.
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| GB190908245A (en) * | 1909-04-06 | 1910-02-10 | Bernhard Noltenius | Process and Apparatus for the Immediate Recovery of Residuary Oil from Earth, which haS been previously used, for Clarifying or Bleaching Oil, by the use of Steam. |
| CH409868A (en) * | 1963-07-12 | 1966-03-31 | Mueller Hans | Process for the extraction of oil from filtration residues in disc filters with horizontally positioned filter elements |
| CN1954930A (en) * | 2005-10-25 | 2007-05-02 | 东莞市创盈资源再生科技有限公司 | Oil-containing argil harmless processing technology |
| CN102229863A (en) * | 2011-06-03 | 2011-11-02 | 金坛市河头国庆废工业油加工厂 | Method for recovering grease from oil-containing argil residue by squeezing |
| CN205974397U (en) * | 2016-08-25 | 2017-02-22 | 常州市锦云工业废弃物处理有限公司 | Oily waste water carclazyte sediment treatment facility |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190908245A (en) * | 1909-04-06 | 1910-02-10 | Bernhard Noltenius | Process and Apparatus for the Immediate Recovery of Residuary Oil from Earth, which haS been previously used, for Clarifying or Bleaching Oil, by the use of Steam. |
| CH409868A (en) * | 1963-07-12 | 1966-03-31 | Mueller Hans | Process for the extraction of oil from filtration residues in disc filters with horizontally positioned filter elements |
| CN1954930A (en) * | 2005-10-25 | 2007-05-02 | 东莞市创盈资源再生科技有限公司 | Oil-containing argil harmless processing technology |
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