CN108727181A - A kind of separating-purifying refining plant containing propionate salt - Google Patents
A kind of separating-purifying refining plant containing propionate salt Download PDFInfo
- Publication number
- CN108727181A CN108727181A CN201810891783.5A CN201810891783A CN108727181A CN 108727181 A CN108727181 A CN 108727181A CN 201810891783 A CN201810891783 A CN 201810891783A CN 108727181 A CN108727181 A CN 108727181A
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- Prior art keywords
- propionic acid
- acid tower
- fixed
- cavity
- separating
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of separating-purifying refining plant containing propionate salt, including propionic acid tower, one end of the propionic acid tower is equipped with feeding equipment, the first cavity is equipped in the propionic acid tower, it is fixed in opposing sidewalls in first cavity that there are two stuffing boxes, the second cavity is equipped in the stuffing box, it is respectively and fixedly provided with the first filter plate in the opposing sidewalls of second cavity, it is fixed with guard box on one end side wall of the propionic acid tower, it is fixed with driving motor on one end side wall in the guard box, the output shaft end of the driving motor is through one end side wall of guard box and one end side wall of the first cavity and is fixed with the second rotating bar, one end of second rotating bar is fixed with the first angular wheel.The present invention solves the problems, such as that filler and material reaction are insufficient by the transformation to the separating-purifying device containing propionate salt, and convenient separation and purification containing propionate salt, easy to operate and easy to use, flow is comprehensive, time saving and energy saving.
Description
Technical field
The present invention relates to the field of purification technique containing propionate salt more particularly to a kind of separating-purifying containing propionate salt are refined
Device.
Background technology
Coal gasification industry possesses vast potential for future development, is many regional column support type industries, although bringing abundant warp
Ji benefit, but also bring heavy environmental pressure.Saliferous organic waste materials are in oil, chemical industry, food, liquid waste processing, intermediate
Etc. industries be widely present, be always waste processing in problem.
The treatment technology of saliferous organic waste materials is more at present, discloses a kind of method of burning, by high saliferous organic waste materials or
A combustion chamber is sprayed into, in 600~700 DEG C of combustion decompositions of temperature, salinity removal rate is higher.The flue gas that one combustion room generates enters two combustions
Room makes to maintain 1100~1200 DEG C in stove by temperature feedback control auxiliary fuel consumption, volume of air supply in dual firing chamber,
Make in flue gas harmful organic substance is fully destroyed by fire.This processing disadvantages is to need auxiliary fuel, increases processing cost.
The synthetical recovery processing unit of open another high saliferous amino acid waste products, including it is used for amino acid and inorganic salinity
From nanofiltration separation system and for the function of mechanical steam recompression vapo(u)rization system of inorganic salts evaporative crystallization.With Aspartame device institute
For the amino acid brine waste of generation, amino acid brine waste ingredient is as follows:0.1~0.2% phenylalanine;0.1~0.2%L-
Aspartic acid;Sodium chloride 8~9%;The material of pH=6.8~7.5 first carries out coarse filtration and refined filtration, removes particulate matter, then using receiving
Membrane filtration, macromolecular amino acid are trapped within concentrated phase head tank, and light phase enters MVR evaporative crystallizations.Water outlet COD is dropped to
500mgO2/L hereinafter, and this water there is still a need for biochemical treatments to add sterilization that can reach the water quality requirement of cooling circulating water.Patent
CN103588338 discloses a kind of improved method of function of mechanical steam recompression system processing salt-containing organic wastewater, which first uses
Filter screen pre-processes waste water, removes magazine and suspended matter in waste water;Improved part be pre-process and evaporate it is dense
Oxidation step is increased between contracting, pretreated waste water is sent into oxidizing tower, ozone oxidation is passed through so that useless Organic substance in water
Content be down to 15% or so;It is evaporated crystallisation step, Crystallization Separation step again;Waste water solution after Crystallization Separation, which is sent into, to be adjusted
Pond is saved, pH value and COD concentration is adjusted, makes up to processing requirement of the incinerator to different saliferous type wastes;It adjusts
It is sent into incinerator after waste water solution atomization process after section, the pyrolysis and combustion at 850~1100 DEG C of temperature removes having in waste water
Evil substance;The flue gas finally generated to incinerator burning is handled, smoke evacuation processing after processing.Whole flow process is related to nine processing
Step, flow is complicated, and incinerator is expensive, need to burn at high temperature, energy consumption is larger.
And existing device to contain propionate salt carry out separating-purifying when, gas-liquid two-phase in propionic acid tower by filler be carry
Body, mutual heat and mass realize the separation of propionic acid and inorganic salts, and filler can increase the contact surface of gas-liquid, keep it mutually strong
Strong mixing facilitates filler and material fully to be reacted, quickly detaches propionic acid and salt, for this purpose, we have proposed one
The separating-purifying refining plant containing propionate salt is planted to solve the above problems.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of separation containing propionate salt proposed
Purification device.
To achieve the goals above, present invention employs following technical solutions:
One end of a kind of separating-purifying refining plant containing propionate salt, including propionic acid tower, the propionic acid tower is equipped with feeding equipment, institute
It states and is equipped with the first cavity in propionic acid tower, fixed in the opposing sidewalls in first cavity there are two stuffing box, the stuffing boxes
It is inside equipped with the second cavity, the first filter plate, the one end of the propionic acid tower are respectively and fixedly provided in the opposing sidewalls of second cavity
It is fixed with guard box on wall, driving motor, the output shaft of the driving motor are fixed on one end side wall in the guard box
End is through one end side wall of guard box and one end side wall of the first cavity and is fixed with the second rotating bar, second rotating bar
One end be fixed with the first angular wheel, run through being equipped with the first rotating bar on the first filter plate of two of which, described first turn
Fixed in lever there are two the second angular wheels, and the side of two the second angular wheels is mutually nibbled with the first angular wheel respectively
It closes, the both ends of first rotating bar are run through the first filter plate and extended in the second cavity, the two of first rotating bar
End is respectively and fixedly provided with two turntables, and equidistantly there are four moving blocks for fixation for one week of the turntable, and the lower end of the propionic acid tower is equipped with
Separator.
Preferably, the separator includes the collecting box being arranged in propionic acid tower lower end, and the lower end of the propionic acid tower is run through
The side of the upper end side wall of collecting box, the collecting box is equipped with opening, and one end of the opening is hinged with capping, the collecting box
The second filter plate is fixed in interior opposing sidewalls, the lower end side of the collecting box is equipped with finished pot.
Preferably, the feeding equipment includes the propionic acid tank being arranged in propionic acid tower side, and one end of the propionic acid tank is equipped with
One end of feed pump, the feed pump is connected with material conduit, and one end side wall of propionic acid tower is run through in one end of the material conduit
And it extends in propionic acid tower.
Preferably, the upper end of the propionic acid tower is connected with the first connecting tube, and one end of first connecting tube is equipped with condensation
The lower end side of device, the propionic acid tower is equipped with the second connecting tube, and the side of second connecting tube is equipped with horizontal reboiler.
Preferably, the both ends of the propionic acid tower are fixed with supporting rack.
Preferably, filler is equipped in the stuffing box, and filler is made of Bauer ring material.
Compared with prior art, the beneficial effects of the invention are as follows:
1, pass through the cooperation of driving motor, the first angular wheel, the second angular wheel, the first rotating bar, turntable and moving block, meeting
Turntable and moving block rotation are driven, solves the problems, such as that filler and material reaction are insufficient, has reached filler and material quickly fills
That divides contacts mixed effect, convenient separation and purification containing propionate salt;
2, by the cooperation of the second filter plate, collecting box and finished pot, inorganic salts and propionic acid are detached, are solved by the second filter plate
The problem of inorganic salts and propionic acid are inconvenient to detach has reached and inorganic salts has been sent into storage salt bath, and propionic acid is sent into storage in finished pot
Purpose, facilitate sale.
In conclusion the present invention by the transformation to the separating-purifying device containing propionate salt, solves filler and material is anti-
Insufficient problem is answered, convenient separation and purification containing propionate salt, easy to operate and easy to use, flow is comprehensive, time saving province
Power.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the separating-purifying refining plant containing propionate salt proposed by the present invention;
Fig. 2 is schematic enlarged-scale view at a kind of A of the separating-purifying refining plant containing propionate salt proposed by the present invention;
Fig. 3 is a kind of separator structural schematic diagram of the separating-purifying refining plant containing propionate salt proposed by the present invention;
Fig. 4 is a kind of stuffing box structural schematic diagram of the separating-purifying refining plant containing propionate salt proposed by the present invention;
Fig. 5 is a kind of moving block structural schematic diagram of the separating-purifying refining plant containing propionate salt proposed by the present invention.
In figure:1 propionic acid tower, 2 condensers, 3 first connecting tubes, 4 stuffing boxes, 5 first filter plates, 6 material conduits, 7 propionic acid
Tank, 8 feed pumps, 9 supporting racks, 10 cappings, 11 collecting boxs, 12 horizontal reboilers, 13 guard boxs, 14 driving motors, 15 first turns
Lever, 16 second rotating bars, 17 first angular wheels, 18 second angular wheels, 19 discharge ports, 20 second filter plates, 21 finished products
Tank, 22 turntables, 23 moving blocks.
Specific implementation mode
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 describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-5, a kind of separating-purifying refining plant containing propionate salt, including propionic acid tower 1, one end of propionic acid tower 1 are set
There is a feeding equipment, be equipped with the first cavity in propionic acid tower 1, fixed in the opposing sidewalls in the first cavity there are two stuffing box 4, fillers
It is equipped with the second cavity in case 4, is respectively and fixedly provided with the first filter plate 5 in the opposing sidewalls of the second cavity, on one end side wall of propionic acid tower 1
It is fixed with guard box 13, driving motor 14 is fixed on one end side wall in guard box 13, and driving motor 14 is SM110-
060-20LFB models, the output shaft end of driving motor 14 run through the one end of one end side wall and the first cavity of guard box 13
Wall is simultaneously fixed with the second rotating bar 16, by the operation of driving motor 14, drives the rotation of the first angular wheel 17, then drives the
The rotation of two angular wheels 18, can then drive the rotation of the first rotating bar 15, then drive the rotation of turntable 22, then drive rotation
The rotation of block 23, can drive the filler in stuffing box 4 and be sufficiently mixed containing propionate salt and detached, one end of the second rotating bar 16
It is fixed with the first angular wheel 17, runs through on the first filter plate of two of which 5 and is equipped with the first rotating bar 15, the first rotating bar 15
There are two the second angular wheels 18 for upper fixation, and the side of two the second angular wheels 18 is mutually nibbled with the first angular wheel 17 respectively
It closes, the both ends of the first rotating bar 15 are run through the first filter plate 5 and extended in the second cavity, and the both ends of the first rotating bar 15 are equal
Fixed there are two turntables 22, and one week of turntable 22 is equidistantly fixed there are four moving block 23, and the lower end of propionic acid tower 1 is equipped with separation and fills
It sets, the both ends of propionic acid tower 1 are fixed with supporting rack 9, are equipped with filler in stuffing box 4, and filler is made of Bauer ring material, fully stirs
It mixes and has achieved the effect that filler and material quickly adequately contact mixing, convenient separation and purification containing propionate salt.
In the present invention, separator includes the collecting box 11 being arranged in 1 lower end of propionic acid tower, and the lower end of propionic acid tower 1 is through receipts
The side of the upper end side wall of header 11, collecting box 11 is equipped with opening, and one end of opening is hinged with capping 10, is easy to open, and takes out
Inorganic salts are fixed with the second filter plate 20 in the opposing sidewalls in collecting box 11, are detached to inorganic salts and propionic acid, collecting box
11 lower end side is equipped with finished pot 21, has reached and inorganic salts are sent into storage salt bath, is stored in propionic acid feeding finished pot 21
Purpose facilitates sale.
In the present invention, feeding equipment includes the propionic acid tank 7 being arranged in 1 side of propionic acid tower, and one end of propionic acid tank 7 is equipped with charging
One end of pump 8, feed pump 8 is connected with material conduit 6, and one end of material conduit 6 is run through one end side wall of propionic acid tower 1 and extended to
In propionic acid tower 1, propionic acid can be transported to the plurality of positions in propionic acid tower 1 by material conduit 6, be carried out at the same time stirring, increase separation
Efficiency, it is easy to use.
The upper end of propionic acid tower 1 is connected with the first connecting tube 3, and one end of the first connecting tube 3 is equipped with condenser 2, propionic acid tower 1
Lower end side is equipped with the second connecting tube, and the side of the second connecting tube is equipped with horizontal reboiler 12, gas-liquid two-phase is facilitated mutually to conduct heat
Mass transfer facilitates separation.
In the present invention, in use, the thick propionic acid in propionic acid tank 7 is delivered in propionic acid tower 1 by feed pump 8, then lead to
It overdrives the operation of motor 14, drives the rotation of the first angular wheel 17, then drive the rotation of the second angular wheel 18, then can
The rotation of the first rotating bar 15 is driven, then drives the rotation of turntable 22, then drives the rotation of moving block 23, stuffing box 4 can be driven
Interior filler and being sufficiently mixed containing propionate salt is detached, and is then again filtered inorganic salts to collecting box by the second filter plate 20
It in the storage salt bath of 11 upper ends, then covers 10 by opening and takes out inorganic salts, propionic acid is collected by finished pot 21.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of separating-purifying refining plant containing propionate salt, including propionic acid tower(1), it is characterised in that:The propionic acid tower(1)'s
One end is equipped with feeding equipment, the propionic acid tower(1)It is inside equipped with the first cavity, is fixed in the opposing sidewalls in first cavity
Two stuffing boxes(4), the stuffing box(4)It is inside equipped with the second cavity, is respectively and fixedly provided in the opposing sidewalls of second cavity
One filter plate(5), the propionic acid tower(1)One end side wall on be fixed with guard box(13), the guard box(13)Interior one end
Driving motor is fixed on side wall(14), the driving motor(14)Output shaft end run through guard box(13)One end side wall
With one end side wall of the first cavity and be fixed with the second rotating bar(16), second rotating bar(16)One end be fixed with first
Angular wheel(17), the first filter plate of two of which(5)On run through be equipped with the first rotating bar(15), first rotating bar
(15)There are two the second angular wheels for upper fixation(18), two the second angular wheels(18)Side respectively with the first angular wheel
(17)Intermeshing, first rotating bar(15)Both ends run through the first filter plate(5)And it extends in the second cavity, institute
State the first rotating bar(15)Both ends be respectively and fixedly provided with two turntables(22), the turntable(22)One week it is equidistantly fixed there are four
Moving block(23), the propionic acid tower(1)Lower end be equipped with separator.
2. a kind of separating-purifying refining plant containing propionate salt according to claim 1, which is characterized in that the separation dress
It sets including being arranged in propionic acid tower(1)The collecting box of lower end(11), the propionic acid tower(1)Lower end run through collecting box(11)Upper end
Side wall, the collecting box(11)Side be equipped with opening, one end of the opening is hinged with capping(10), the collecting box(11)
The second filter plate is fixed in interior opposing sidewalls(20), the collecting box(11)Lower end side be equipped with finished pot(21).
3. a kind of separating-purifying refining plant containing propionate salt according to claim 1, which is characterized in that the charging dress
It sets including being arranged in propionic acid tower(1)The propionic acid tank of side(7), the propionic acid tank(7)One end be equipped with feed pump(8), it is described into
Material pump(8)One end be connected with material conduit(6), the material conduit(6)One end run through propionic acid tower(1)One end side wall simultaneously
Extend to propionic acid tower(1)It is interior.
4. a kind of separating-purifying refining plant containing propionate salt according to claim 1, which is characterized in that the propionic acid tower
(1)Upper end be connected with the first connecting tube(3), first connecting tube(3)One end be equipped with condenser(2), the propionic acid tower
(1)Lower end side be equipped with the second connecting tube, the side of second connecting tube is equipped with horizontal reboiler(12).
5. a kind of separating-purifying refining plant containing propionate salt according to claim 1, which is characterized in that the propionic acid tower
(1)Both ends be fixed with supporting rack(9).
6. a kind of separating-purifying refining plant containing propionate salt according to claim 1, which is characterized in that the stuffing box
(4)It is interior to be equipped with filler, and filler is made of Bauer ring material.
Priority Applications (1)
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CN201810891783.5A CN108727181B (en) | 2018-08-07 | 2018-08-07 | Separation, purification and refining device for saliferous propionic acid |
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CN201810891783.5A CN108727181B (en) | 2018-08-07 | 2018-08-07 | Separation, purification and refining device for saliferous propionic acid |
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CN108727181A true CN108727181A (en) | 2018-11-02 |
CN108727181B CN108727181B (en) | 2023-10-20 |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4039428A (en) * | 1976-01-02 | 1977-08-02 | Monsanto Company | Purification of propionic acid |
US20140330039A1 (en) * | 2011-12-01 | 2014-11-06 | Taminco Finland | Method for recovering and purifying propionic acid |
CN106621793A (en) * | 2017-02-15 | 2017-05-10 | 河北科技大学 | Bio-trickling filter for producing sulphur by removing hydrogen sulfide and method thereof |
CN107321172A (en) * | 2017-08-25 | 2017-11-07 | 贾新奎 | A kind of flue gas processing device of vulcanization reaction |
CN107973712A (en) * | 2017-11-28 | 2018-05-01 | 天津渤化永利化工股份有限公司 | A kind of system and method for improving propionic acid yield |
CN207333137U (en) * | 2017-08-18 | 2018-05-08 | 天津市圣信唯科技有限公司 | A kind of oil-free membrane vaccum environmental protection pump of corrosion-resistant condition of high vacuum degree adjustable flow |
CN207356913U (en) * | 2017-10-11 | 2018-05-15 | 天津市天大津康化工设备有限公司 | A kind of waste gas absorption packed tower |
CN207375971U (en) * | 2017-09-11 | 2018-05-18 | 湖北工程学院 | chromatographic pure isopropanol production system and production line |
CN208594223U (en) * | 2018-08-07 | 2019-03-12 | 河南顺达新能源科技有限公司 | A kind of separating-purifying refining plant containing propionate salt |
-
2018
- 2018-08-07 CN CN201810891783.5A patent/CN108727181B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4039428A (en) * | 1976-01-02 | 1977-08-02 | Monsanto Company | Purification of propionic acid |
US20140330039A1 (en) * | 2011-12-01 | 2014-11-06 | Taminco Finland | Method for recovering and purifying propionic acid |
CN106621793A (en) * | 2017-02-15 | 2017-05-10 | 河北科技大学 | Bio-trickling filter for producing sulphur by removing hydrogen sulfide and method thereof |
CN207333137U (en) * | 2017-08-18 | 2018-05-08 | 天津市圣信唯科技有限公司 | A kind of oil-free membrane vaccum environmental protection pump of corrosion-resistant condition of high vacuum degree adjustable flow |
CN107321172A (en) * | 2017-08-25 | 2017-11-07 | 贾新奎 | A kind of flue gas processing device of vulcanization reaction |
CN207375971U (en) * | 2017-09-11 | 2018-05-18 | 湖北工程学院 | chromatographic pure isopropanol production system and production line |
CN207356913U (en) * | 2017-10-11 | 2018-05-15 | 天津市天大津康化工设备有限公司 | A kind of waste gas absorption packed tower |
CN107973712A (en) * | 2017-11-28 | 2018-05-01 | 天津渤化永利化工股份有限公司 | A kind of system and method for improving propionic acid yield |
CN208594223U (en) * | 2018-08-07 | 2019-03-12 | 河南顺达新能源科技有限公司 | A kind of separating-purifying refining plant containing propionate salt |
Non-Patent Citations (1)
Title |
---|
杨利利: "醋酸和丙酸分离工艺过程设计模拟", 石油化工应用, vol. 36, no. 08, pages 136 - 137 * |
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