CN108926865A - A kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production - Google Patents
A kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production Download PDFInfo
- Publication number
- CN108926865A CN108926865A CN201810638995.2A CN201810638995A CN108926865A CN 108926865 A CN108926865 A CN 108926865A CN 201810638995 A CN201810638995 A CN 201810638995A CN 108926865 A CN108926865 A CN 108926865A
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- reaction kettle
- stripping
- environment
- fixed
- upper cover
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/38—Steam distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/80—Phthalic acid esters
- C07C69/82—Terephthalic acid esters
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of stripping vaporising devices for environment-friendlyplasticizer plasticizer DOTP production, including reaction kettle, the open setting in the upper end of the reaction kettle, the upper end of reaction kettle lateral surface and the inner wall of upper cover lower surface clamping groove are slidably connected, the position that upper cover lower surface clamping groove upper surface corresponds to reaction kettle is bonded with rubber ring, the lower surface of rubber ring and the upper-end contact of upper cover, immersible pump sprays solution through inlet tube, the solution that inlet tube sprays forms conical liquid curtain under the action of cone-shaped hood, increase the surface area of solution, promote the water and alcohol evaporation in solution, high production efficiency, it is short to strip the production time；Worker rotates screw rod by rotating bar, screw rod rotation is to adjust the length of height adjustment device, to adjust the height of round web plate, immersible pump is worked in the solution of different liquid levels, improves this in the applicability of the stripping vaporising device of environment-friendlyplasticizer plasticizer DOTP production.
Description
Technical field
The present invention relates to plasticizer production technical field, specially a kind of stripping for environment-friendlyplasticizer plasticizer DOTP production
Vaporising device.
Background technique
The toxicity of DOTP is low, highly-safe, and Waterproofing/oilproofing extraction performance is stronger, is used as nontoxic plasticizer always,
Allow using in medical PVC product and various plastic toys.Industrial production DOTP uses terephthalic acid (TPA) substantially at present
(TPA) method (direct esterification), TPA method are that isooctanol and PTA are put into esterifying kettle by certain the mass ratio of the material, and catalyst is added
10~12h is reacted at 170~230 DEG C, liquid acid value to be esterified is reduced to 0.2mgg-1 hereinafter, as esterification terminal.
Part alcohol excess is removed first with esterification waste heat after esterification, monoesters acid complete with unreacted in NaOH is added later, reduces
Product acidity, and catalyst is hydrolyzed into the cotton-shaped titanium dioxide of solid, it is soluble in water, it is separated from ester.It is depressurizing later
It is passed through steam under vacuum state and is cleaned out with steam stripped mode by water and alcohol remaining in washing step is neutralized, then will be active
Charcoal, diatomite are added in the thick ester after stripping, and adsorb pigment, the impurity etc. in thick ester, are finally filtered in filter to obtain the final product
To pure product.
Most factory uses and vacuumizes the method for being passed directly into steam stripping in kettle in stripping process, existing to set
Standby stripping production efficiency is lower, so that the stripping production time extends.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of raw for environment-friendlyplasticizer plasticizer DOTP
The stripping vaporising device of production, immersible pump spray solution through inlet tube, and the solution that inlet tube sprays is under the action of cone-shaped hood
Conical liquid curtain is formed, the surface area of solution is increased, promotes water and alcohol evaporation in solution, high production efficiency, stripping production
Time is short, can effectively solve the problems in background technique.
To achieve the above object, the invention provides the following technical scheme: it is a kind of for environment-friendlyplasticizer plasticizer DOTP production
Strip vaporising device, including reaction kettle, the open setting in the upper end of the reaction kettle, the upper end of reaction kettle lateral surface and upper cover following table
The inner wall of face clamping groove is slidably connected, and the position that upper cover lower surface clamping groove upper surface corresponds to reaction kettle is bonded with rubber ring, rubber
The lower surface of rubber ring and the upper-end contact of upper cover, the gas outlet of upper cap upper surface are connected to the air inlet of check valve, check valve
Gas outlet is connected to the air inlet of exhaust tube, and the gas outlet of exhaust tube is connected to the air inlet of external vacuum pump, the air inlet of upper cover
Mouth is connected to the gas outlet of air intake valve.
The lateral surface of reaction kettle is fixed with PLC controller, and the lower surface inside reaction kettle is fixed with electric boiling plate, reaction kettle
Inside be equipped with round web plate, round web plate lower surface is fixed, and there are three height adjustment device, and the upper surface of round web plate passes through
Fixed frame is fixed with immersible pump, and by flanged joint, the upper end of inlet tube is installed for the water inlet of immersible pump and the lower end of inlet tube
There is liquid means for diverging, the lower surface of round web plate is fixed with temperature sensing sensor, the input terminal and external power supply of PLC controller
Output end electrical connection, the output end of PLC controller is electrically connected with the input terminal of the input terminal of electric boiling plate and immersible pump respectively,
The output end electrical connection of the input terminal and temperature sensing sensor of PLC controller.
As a preferred technical solution of the present invention, the upper end of the reaction kettle lateral surface is equipped with the fixed dress of upper cover
It sets, the position that upper cover lateral surface corresponds to cover fixing device is fixed with card adapter plate, and card adapter plate offers card far from one end of upper cover
Access slot.
As a preferred technical solution of the present invention, the quantity of the cover fixing device is three, and three upper covers
Fixed device is angularly distributed around the axis of reaction kettle.
As a preferred technical solution of the present invention, the cover fixing device includes standing screw, standing screw
Lower end and the upper end of reaction kettle lateral surface are hinged by hinged seat, and the upper end of standing screw and wing nut are threadedly coupled, fixed
Clamping groove clamping on the side and card adapter plate of screw rod.
As a preferred technical solution of the present invention, three height adjustment device angularly divide around the axis of round web plate
Cloth, round web plate are located at the top of electric boiling plate.
As a preferred technical solution of the present invention, the height adjustment device includes bearing, and bearing passes through mounting rack
It is fixed on the lower surface of web plate, the inner ring of bearing is fixedly connected with the upper end of screw rod, the lower end of screw rod and the top of screwed pipe inner wall
It is threadedly coupled, the closed setting in the lower end of screwed pipe.
As a preferred technical solution of the present invention, rotating bar that there are two the upper end fixations of the screw rod side, two
Rotating bar is symmetrical arranged in the left and right sides of screw rod.
As a preferred technical solution of the present invention, the liquid means for diverging includes transverse connecting rod, lateral connection
The both ends of bar are fixedly connected with the inner wall of inlet tube, and the side of transverse connecting rod is fixedly connected with the lower end of vertical connecting rod, are erected
The upper end of straight connecting rods is fixedly connected with the side inside cone-shaped hood.
As a preferred technical solution of the present invention, the axis of the cone-shaped hood and the axis of inlet tube are overlapped, feed liquor
The diameter of pipe lateral surface is less than the diameter of cone-shaped hood lower end.
As a preferred technical solution of the present invention, the side of the cone-shaped hood inner side is fixed with eight flow-disturbings
Column, eight turbulence columns are angularly distributed around the axis of cone-shaped hood.
Compared with prior art, the beneficial effects of the present invention are: this is steamed for the environment-friendlyplasticizer plasticizer DOTP stripping produced
Transmitting apparatus, immersible pump spray solution through inlet tube, and the solution that inlet tube sprays forms taper liquid under the action of cone-shaped hood
Body curtain increases the surface area of solution, promotes water and alcohol evaporation, high production efficiency in solution that it is short to strip the production time；Worker
By rotating bar screw rod is rotated, screw rod rotation is to adjust the length of height adjustment device, to adjust round web plate
Highly, allow immersible pump to work in the solution of different liquid levels, improve this in the vapour of environment-friendlyplasticizer plasticizer DOTP production
Propose the applicability of vaporising device.
Detailed description of the invention
Fig. 1 is main view the schematic diagram of the section structure of the present invention；
Fig. 2 is structure enlargement diagram at A of the present invention；
Fig. 3 is cover fixing device structural schematic diagram of the present invention；
Fig. 4 is height adjustment device structural schematic diagram of the present invention.
In figure: 1 exhaust tube, 2 check valves, 3 upper covers, 4 rubber rings, 5 reaction kettles, 6 electric boiling plates, 7 height adjustment device, 71
Bearing, 72 screw rods, 73 screwed pipes, 8 rotating bars, 9 liquid means for diverging, 91 cone-shaped hoods, 92 vertical connecting rods, 93 transverse connecting rods,
10PLC controller, 11 air intake valves, 12 immersible pumps, 13 inlet tubes, 14 temperature sensing sensors, 15 round web plates, 16 upper covers are fixed
Device, 161 wing nuts, 162 standing screws, 163 hinged seats, 17 turbulence columns, 18 card adapter plates, 19 vertical conduits.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of stripping for environment-friendlyplasticizer plasticizer DOTP production
Vaporising device, including reaction kettle 5, the open setting in the upper end of reaction kettle 5, the 3 lower surface card of upper end and upper cover of 5 lateral surface of reaction kettle
The inner wall of access slot is slidably connected, and the position that 3 lower surface clamping groove upper surface of upper cover corresponds to reaction kettle 5 is bonded with rubber ring 4, rubber
The lower surface of ring 4 and the upper-end contact of upper cover 3, rubber ring 4 improve the air-tightness between reaction kettle 5 and upper cover 3, in upper cover 3
The gas outlet on surface is connected to the air inlet of check valve 2, and the gas outlet of check valve 2 is connected to the air inlet of exhaust tube 1, exhaust tube
1 gas outlet is connected to the air inlet of external vacuum pump, and the air inlet of upper cover 3 is connected to the gas outlet of air intake valve 11.
The upper end of 5 lateral surface of reaction kettle is equipped with cover fixing device 16, and 3 lateral surface of upper cover corresponds to cover fixing device 16
Position be fixed with card adapter plate 18, card adapter plate 18 offers clamping groove, the quantity of cover fixing device 16 far from one end of upper cover 3
It is three, and three cover fixing device 16 are angularly distributed around the axis of reaction kettle 5, cover fixing device 16 includes fixed spiral shell
Bar 162, the upper end of 5 lateral surface of lower end and reaction kettle of standing screw 162 is hinged by hinged seat 163, standing screw 162 it is upper
End and wing nut 161 are threadedly coupled, and the clamping groove clamping on the side and card adapter plate 18 of standing screw 162, worker makes instead
The inner wall of the 3 lower surface clamping groove of upper end and upper cover of 5 lateral surface of kettle is answered to be slidably connected, worker's rotary fixing screw bar 162 makes solid
Determine the clamping groove clamping on screw rod 162 and card adapter plate 18, worker rotates wing nut 161, the lower surface of wing nut 161 and card
The upper surface of fishplate bar 18 contacts, so that 3 fixation of reaction kettle 5 and upper cover.
The lateral surface of reaction kettle 5 is fixed with PLC controller 10, and the lower surface inside reaction kettle 5 is fixed with electric boiling plate 6,
The inside of reaction kettle 5 is equipped with round web plate 15, and round 15 lower surface of web plate is fixed, and there are three height adjustment device 7, round web plates
15 upper surface is fixed with immersible pump 12 by fixed frame, and the water inlet of immersible pump 12 and the lower end of inlet tube 13 are connected by flange
It connecing, the upper end of inlet tube 13 is equipped with liquid means for diverging 9, and the lower surface of round web plate 15 is fixed with temperature sensing sensor 14,
The electrical connection of the output end of the input terminal of PLC controller 10 and external power supply, the output end of PLC controller 10 respectively with electric boiling plate
The input terminal electrical connection of 6 input terminal and immersible pump 12, the input terminal of PLC controller 10 and the output end of temperature sensing sensor 14
Electrical connection, when PLC controller 10 detects the temperature of solution in reaction kettle 5 lower than setting value by temperature sensing sensor 14,
Electric boiling plate 6 heats the solution in reaction kettle 5, and immersible pump 12 sprays solution through inlet tube 13, what inlet tube 13 sprayed
Solution forms conical liquid curtain under the action of cone-shaped hood 91, increases the surface area of solution, and water and alcohol in solution is promoted to steam
Hair, high production efficiency, stripping production time are short.
Liquid means for diverging 9 includes transverse connecting rod 93, and the both ends of transverse connecting rod 93 and the inner wall of inlet tube 13 are fixed
Connection, the side of transverse connecting rod 93 are fixedly connected with the lower end of vertical connecting rod 92, the upper end of vertical connecting rod 92 and taper
The side of 91 inside of cover is fixedly connected, the axis coincidence of the axis of cone-shaped hood 91 and inlet tube 13,13 lateral surface of inlet tube it is straight
Diameter is less than the diameter of 91 lower end of cone-shaped hood, and the side of 91 inner side of cone-shaped hood is fixed with eight turbulence columns 17, eight turbulence columns
17 are angularly distributed around the axis of cone-shaped hood 91, and liquid curtain is divided into more parts by fluidization tower 17, so that below liquid curtain in solution
Water and alcohol can also volatilize.
Three height adjustment device 7 are angularly distributed around the axis of round web plate 15, and round web plate 15 is located at electric boiling plate 6
Top, height adjustment device 7 includes bearing 71, and bearing 71 is fixed on the lower surface of web plate 15 by mounting rack, bearing 71
Inner ring is fixedly connected with the upper end of screw rod 72, and the top of 73 inner wall of lower end and screwed pipe of screw rod 72 is threadedly coupled, under screwed pipe 73
Closed setting is held, the upper end of 72 side of screw rod is fixed there are two rotating bar 8, and two rotating bars 8 are right in the left and right sides of screw rod 72
Claiming setting, worker rotates screw rod 72 by rotating bar 8, and screw rod 72 rotates to adjust the length of height adjustment device 7, from
And the height of round web plate 15 is adjusted, immersible pump 12 is worked in the solution of different liquid levels, improves this in environmental protection
The applicability of the stripping vaporising device of type plasticizer DOTP production.
PLC controller 10 controls electric boiling plate 6 and immersible pump 12 is means commonly used in the prior art.
When in use: worker makes the inner wall of the 3 lower surface clamping groove of upper end and upper cover of 5 lateral surface of reaction kettle slide company
It connects, rubber ring 4 improves the air-tightness between reaction kettle 5 and upper cover 3, and worker's rotary fixing screw bar 162 makes standing screw 162
With the clamping groove clamping in card adapter plate 18, worker rotates wing nut 161, the lower surface of wing nut 161 and card adapter plate 18
Upper surface contact, so that 3 fixation of reaction kettle 5 and upper cover.
Immersible pump 12 is located in solution, and the upper end of inlet tube 13 is located at the top of solution, and external vacuum pump passes through pumping
Pipe 1 and check valve 2 make 5 inner vacuum of reaction kettle, and PLC controller 10 controls electric boiling plate 6 and immersible pump 12 works, electric heating
Plate 6 heats the solution in reaction kettle 5, and immersible pump 12 sprays solution through inlet tube 13, and the solution that inlet tube 13 sprays exists
Conical liquid curtain is formed under the action of cone-shaped hood 91, increases the surface area of solution, promotes water and alcohol evaporation in solution, flow-disturbing
Liquid curtain is divided into more parts by column 17, so that the water and alcohol below liquid curtain in solution can also volatilize, PLC controller 10 passes through
Temperature sensing sensor 14 detects the temperature of solution in reaction kettle 5.
Worker rotates screw rod 72 by rotating bar 8, and screw rod 72 rotates to adjust the length of height adjustment device 7,
To adjust the height of round web plate 15, immersible pump 12 is worked in the solution of different liquid levels, improves this in ring
The applicability of the stripping vaporising device of guarantor's type plasticizer DOTP production.
After the completion of stripping, air intake valve 11 is connected in worker, and extraneous gas enters in reaction kettle 5 through air intake valve 1.
The present invention, immersible pump 12 spray solution through inlet tube 13, and the solution that inlet tube 13 sprays is in cone-shaped hood 91
Conical liquid curtain is formed under effect, increases the surface area of solution, promotes water and alcohol evaporation in solution, high production efficiency, vapour
It is short to mention the production time；Worker rotates screw rod 72 by rotating bar 8, and the rotation of screw rod 72 is to adjust height adjustment device 7
Length allows immersible pump 12 to work in the solution of different liquid levels to adjust the height of round web plate 15, improves this
In the applicability of the stripping vaporising device of environment-friendlyplasticizer plasticizer DOTP production.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production, including reaction kettle (5), it is characterised in that: institute
The open setting in upper end of reaction kettle (5) is stated, the upper end of reaction kettle (5) lateral surface and the inner wall of upper cover (3) lower surface clamping groove are sliding
Dynamic connection, the position that upper cover (3) lower surface clamping groove upper surface corresponds to reaction kettle (5) are bonded with rubber ring (4), rubber ring (4)
Lower surface and upper cover (3) upper-end contact, the gas outlet of upper cover (3) upper surface is connected to the air inlet of check valve (2), unidirectionally
The gas outlet of valve (2) is connected to the air inlet of exhaust tube (1), and the gas outlet of exhaust tube (1) and the air inlet of external vacuum pump connect
Logical, the air inlet of upper cover (3) is connected to the gas outlet of air intake valve (11)；
The lateral surface of reaction kettle (5) is fixed with PLC controller (10), and the internal lower surface of reaction kettle (5) is fixed with electric boiling plate
(6), the inside of reaction kettle (5) is equipped with round web plate (15), and round web plate (15) lower surface is fixed, and there are three height adjustment device
(7), the upper surface of round web plate (15) is fixed with immersible pump (12) by fixed frame, the water inlet and inlet tube of immersible pump (12)
(13) lower end is by flanged joint, and the upper end of inlet tube (13) is equipped with liquid means for diverging (9), under round web plate (15)
Surface is fixed with temperature sensing sensor (14), the output end electrical connection of the input terminal and external power supply of PLC controller (10), PLC
The output end of controller (10) is electrically connected with the input terminal of the input terminal of electric boiling plate (6) and immersible pump (12) respectively, PLC control
The output end electrical connection of the input terminal and temperature sensing sensor (14) of device (10).
2. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 1, feature exist
In: the upper end of reaction kettle (5) lateral surface is equipped with cover fixing device (16), and upper cover (3) lateral surface corresponds to upper cover and fixes
The position of device (16) is fixed with card adapter plate (18), and card adapter plate (18) offers clamping groove far from the one end of upper cover (3).
3. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 2, feature exist
In: the quantity of the cover fixing device (16) is three, and three cover fixing device (16) are around the axis etc. of reaction kettle (5)
Angular distribution.
4. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 2, feature exist
In: the cover fixing device (16) includes standing screw (162), the lower end of standing screw (162) and reaction kettle (5) lateral surface
Upper end by hinged seat (163) hingedly, the upper end of standing screw (162) and wing nut (161) are threadedly coupled, standing screw
(162) the clamping groove clamping on side and card adapter plate (18).
5. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 1, feature exist
In: three height adjustment device (7) are angularly distributed around the axis of round web plate (15), and round web plate (15) is located at electric boiling plate
(6) top.
6. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 1, feature exist
In: the height adjustment device (7) includes bearing (71), and bearing (71) is fixed on the lower surface of web plate (15) by mounting rack,
The inner ring of bearing (71) is fixedly connected with the upper end of screw rod (72), the lower end of screw rod (72) and the top screw thread of screwed pipe (73) inner wall
Connection, the closed setting in lower end of screwed pipe (73).
7. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 6, feature exist
In: the upper end of screw rod (72) side is fixed, and there are two rotating bar (8), and two rotating bars (8) are in the left and right two of screw rod (72)
Side is symmetrical arranged.
8. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 1, feature exist
It include transverse connecting rod (93) in: the liquid means for diverging (9), the both ends of transverse connecting rod (93) are interior with inlet tube (13)
Wall is fixedly connected, and the side of transverse connecting rod (93) is fixedly connected with the lower end of vertical connecting rod (92), vertical connecting rod (92)
The internal side of upper end and cone-shaped hood (91) be fixedly connected.
9. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 8, feature exist
In: the axis of the cone-shaped hood (91) and the axis of inlet tube (13) are overlapped, and the diameter of inlet tube (13) lateral surface is less than taper
Cover the diameter of (91) lower end.
10. a kind of stripping vaporising device for environment-friendlyplasticizer plasticizer DOTP production according to claim 8, feature exist
In: the side of cone-shaped hood (91) inner side is fixed with eight turbulence columns (17), and eight turbulence columns (17) are around cone-shaped hood
(91) axis is angularly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638995.2A CN108926865B (en) | 2018-06-20 | 2018-06-20 | A steam stripping evaporation plant for production of environment-friendly plasticizer DOTP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638995.2A CN108926865B (en) | 2018-06-20 | 2018-06-20 | A steam stripping evaporation plant for production of environment-friendly plasticizer DOTP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108926865A true CN108926865A (en) | 2018-12-04 |
| CN108926865B CN108926865B (en) | 2021-06-04 |
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ID=64446251
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810638995.2A Active CN108926865B (en) | 2018-06-20 | 2018-06-20 | A steam stripping evaporation plant for production of environment-friendly plasticizer DOTP |
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| CN206910865U (en) * | 2017-07-12 | 2018-01-23 | 云南锦润生物科技有限公司 | A kind of high efficiente callback device of biology extraction alcohol |
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| US20050178648A1 (en) * | 2002-09-20 | 2005-08-18 | Levine Michael R. | Low energy vacuum distillation method and apparatus |
| CN2668216Y (en) * | 2003-10-30 | 2005-01-05 | 原玉明 | Methanal removing kettle |
| CN204417039U (en) * | 2014-08-27 | 2015-06-24 | 郭嘉川 | A kind of multiple-effect manual type diving pump jacking system |
| CN204767483U (en) * | 2015-06-04 | 2015-11-18 | 江阴市江中设备制造有限公司 | Fruit vegetables atomizing enrichment facility |
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| Publication number | Publication date |
|---|---|
| CN108926865B (en) | 2021-06-04 |
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