CN203960091U - Seaweed fiber silk is produced the retrieving arrangement of waste acetone dewatering agent - Google Patents
Seaweed fiber silk is produced the retrieving arrangement of waste acetone dewatering agent Download PDFInfo
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- CN203960091U CN203960091U CN201420348418.7U CN201420348418U CN203960091U CN 203960091 U CN203960091 U CN 203960091U CN 201420348418 U CN201420348418 U CN 201420348418U CN 203960091 U CN203960091 U CN 203960091U
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- fiber silk
- acetone
- seaweed fiber
- membrane separation
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 title claims abstract description 214
- 239000000835 fiber Substances 0.000 title claims abstract description 75
- 241001474374 Blennius Species 0.000 title claims abstract description 56
- 239000002699 waste material Substances 0.000 title claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 63
- 238000000926 separation method Methods 0.000 claims abstract description 41
- 238000001704 evaporation Methods 0.000 claims abstract description 37
- 230000008020 evaporation Effects 0.000 claims abstract description 36
- 239000006200 vaporizer Substances 0.000 claims abstract description 34
- 230000008595 infiltration Effects 0.000 claims abstract description 33
- 238000001764 infiltration Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000919 ceramic Substances 0.000 claims abstract description 20
- 239000012466 permeate Substances 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 230000008676 import Effects 0.000 claims abstract description 3
- 239000012452 mother liquor Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 230000008016 vaporization Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 29
- 230000008569 process Effects 0.000 abstract description 10
- 238000011084 recovery Methods 0.000 description 19
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 18
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 15
- 239000000661 sodium alginate Substances 0.000 description 15
- 235000010413 sodium alginate Nutrition 0.000 description 15
- 229940005550 sodium alginate Drugs 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- 238000009987 spinning Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 238000004821 distillation Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 6
- 238000006297 dehydration reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 239000011575 calcium Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- -1 cakingagent Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- OKJPEAGHQZHRQV-UHFFFAOYSA-N iodoform Chemical compound IC(I)I OKJPEAGHQZHRQV-UHFFFAOYSA-N 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000270666 Testudines Species 0.000 description 1
- 229920013662 Zylonite Polymers 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 229940072056 alginate Drugs 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000648 calcium alginate Substances 0.000 description 1
- 235000010410 calcium alginate Nutrition 0.000 description 1
- 229960002681 calcium alginate Drugs 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a kind of medical seaweed fiber silk bandage and produces waste acetone dewatering agent retrieving arrangement, includes the seaweed fiber silk dewatering tank, prime vaporizer, rear class vaporizer and the infiltration evaporation membrane separation apparatus that connect successively; The bottom of prime vaporizer is connected with the import of ceramic super-filtering film, and the per-meate side of ceramic super-filtering film is connected with seaweed fiber silk dewatering tank; The per-meate side of infiltration evaporation membrane separation apparatus is connected with the entrance of rectifying tower by water cooler, and the tower top of rectifying tower is connected in the entrance of infiltration evaporation membrane separation apparatus.The utility model technological process is simple, and safety coefficient is high, and facility investment is few, and capacity usage ratio is high, and a whole set of technique floor space is little, and device height is low.
Description
Technical field
The utility model relates to a kind of retrieving arrangement of seaweed fiber silk production waste acetone dewatering agent, belongs to infiltrating and vaporizing membrane Application Areas.
Background technology
Acetone is colourless volatile inflammable liquid, and micro-have fragrance.Can be water-soluble, in ethanol, ether and other organic solvents.Acetone is important organic synthesis raw material, for the production of epoxy resin, and polycarbonate, synthetic glass, medicine, agricultural chemicals etc.Also be good solvent, for coating, cakingagent, steel cylinder acetylene etc.Also be used as thinner, clean-out system, extraction agent.Still manufacture the important source material of aceticanhydride, Pyranton, chloroform, iodoform, epoxy resin, polyisoprene rubber, methyl methacrylate etc.In smokeless powder, zylonite, cellulose acetate, the industry such as spray paint, be used as solvent.In the industry such as grease, be used as extraction agent.
Medical seaweed fiber silk bandage core material is seaweed fiber silk, and fiber yarn forms medical bandage after spinning is weaved cotton cloth.In recent years, along with the research to medical seaweed fiber silk bandage both at home and abroad, progressively realized industrialization.Seaweed fiber silk is as core material in medical bandage production process, main soluble in water by the raw material of certain proportioning, forms colloidal sol.After spinning technique, form fiber yarn, in this process, because water content in raw material is higher, be spun into after fiber yarn, fiber yarn is easily sticky in together, affects yield rate.Because acetone has good water-absorbent and volatile characteristic, both can, to the fiber yarn sub-wire of dewatering, also can dry by simple, it cannot be remained in fiber yarn.Therefore, this technique need be used a large amount of acetone solns, and acetone, as tubing products, needs to reduce acetone usage quantity.The more acetone of water content is larger to the sub-wire effectiveness affects of dewatering in fiber yarn industrial production in addition, thereby it cannot be reused.If directly discarded, both to waste, contaminate environment again, does not meet the demand for development of energy-saving and emission-reduction, need be further processed and carry out recycle.
Because acetone and water there is no azeotropic point, the modal treatment process of acetone is for adopting rectifying tower processing at present.This method can take off acetone to 0.5%, and the energy consumption of further dewatering is high.In addition, because this cover fiber yarn technique is in indoor production, there is requirement for device height.And adopting rectificating method energy consumption high, device height is higher, is not suitable for such production technique.In order to reduce recovery energy consumption, reduce production costs, JP is sent clean, floor space is little, device height the is low efficient acetone dewatering and recovery technique that are applicable to such production technique.
Utility model content
The purpose of this utility model is to propose a kind of retrieving arrangement of seaweed fiber silk production waste acetone dewatering agent.While adopting this device, have technological process simple, safety coefficient is high, and the rate of recovery is high, and capacity usage ratio is high, and a whole set of technique floor space is little, and device height is low, the feature of cleanliness without any pollution.
Technical scheme:
Seaweed fiber silk is produced the recovery process of waste acetone dewatering agent, comprise the steps: to the waste acetone mother liquor that dehydration produces from seaweed fiber silk to be added to thermal distillation, overhead product after preheating, evaporation, is sent into infiltration evaporation membrane separation apparatus again, and feed liquid side is recycled acetone.
As preferably, after overhead product preheating, evaporation to 80 ~ 130 DEG C.
As improvement, the cauldron bottom residue producing after the penetrating fluid of infiltration evaporation membrane separation apparatus and evaporation further reclaims through rectifying tower after turning back to tail gas absorption tank, and the acetone that tower top produces is back to the separation of dewatering of infiltration evaporation membrane separation apparatus.
As improvement, reclaim acetone and be back in seaweed fiber silk dehydrating step.
As improvement, add the heavy constituent of thermal distillation generation through after ceramic membrane separation, see through liquid and be back in seaweed fiber silk dehydrating step.Preferably, ceramic membrane refers to ceramic super-filtering film; Preferred, the molecular weight cut-off of described ceramic super-filtering film is at 20000 ~ 200000Da.
Another aspect of the present utility model, seaweed fiber silk is produced the retrieving arrangement of waste acetone dewatering agent, includes the seaweed fiber silk dewatering tank, prime vaporizer, rear class vaporizer and the infiltration evaporation membrane separation apparatus that connect successively; The per-meate side of infiltration evaporation membrane separation apparatus is connected with seaweed fiber silk dewatering tank.
As improvement, the bottom of prime vaporizer is connected with the import of ceramic super-filtering film, and the per-meate side of ceramic super-filtering film is connected with seaweed fiber silk dewatering tank; Ceramic excessive filtration retaining molecular weight optimum is between 20000 ~ 200000Da, and more excellent is 100000Da.
As improvement, the per-meate side of infiltration evaporation membrane separation apparatus 9 is connected with the entrance of rectifying tower by penetrating fluid condenser, and the tower top of rectifying tower is connected in the entrance of infiltration evaporation membrane separation apparatus.
As improvement, the material of the infiltrating and vaporizing membrane adopting in infiltration evaporation membrane separation apparatus is preferential water permeable membrane, and more excellent is to be selected from molecular screen membrane, SiO
2film or PVA film; Most preferably be molecular screen membrane.
As improvement, prime vaporizer is connected in rear class vaporizer by condenser, acetone mother liquor tank successively; The feed liquid side of infiltration evaporation membrane separation apparatus is connected in seaweed fiber silk dewatering tank by finished product water cooler, finished pot; Pipeline between pipeline between infiltration evaporation membrane separation apparatus and finished product water cooler and acetone mother liquor tank and rear class vaporizer is to carry out heat exchange by preheater to be connected.
beneficial effect
Compared with traditional technology, the utility model dewaters by infiltration evaporation membrane separation apparatus, does not introduce the 3rd component, not limited by azeotropic, can a step obtain compared with low water content product, and the rate of recovery is high; Osmotic, evaporating and dewatering whole plant floor space of the present utility model is little, highly lower, and equipment capital construction is simple, and safety coefficient is high, and acetone amount of leakage is few, simple to operate, is applicable to in-house operation, and Energy Intensity Reduction is more than 50%.The utility model is for seaweed fiber silk production technique, and just infiltrating and vaporizing membrane dehydration equipment is embedded in this technological process, realizes the continuity of production process, reduces the input amount of high purity acetone, and production cost has reduced by 30 ~ 60%.The utility model, to a small amount of acetone containing in penetrating fluid and tail gas, equally also reclaims, and this process energy consumption is lower, has reduced the quantity discharged of acetone, has increased the rate of recovery of acetone; The utility model whole plant adopts nitrogen protection, and isolated airborne moisture, oxygen contact with acetone, have increased the safety coefficient of operation of equipment, and is conducive to obtain compared with the acetone of low water content.
Brief description of the drawings
Fig. 1 is that seaweed fiber silk is produced waste acetone dewatering agent recovery process schema;
Wherein 1 is seaweed fiber silk dewatering tank, the 2nd, and ceramic super-filtering film, the 3rd, waste acetone mother liquor tank, the 4th, prime vaporizer, the 5th, condenser, the 6th, acetone mother liquor tank, the 7th, preheater, the 8th, rear class vaporizer, the 9th, infiltration evaporation membrane separation apparatus, the 10th, penetrating fluid condenser, the 11st, vacuum pump, the 12nd, tail gas absorption tank, the 13rd, rectifying tower, the 14th, finished product water cooler, the 15th, finished pot, the 16th, fresh acetone storage tank.
Embodiment
The utility model relates generally to seaweed fiber silk and produces waste acetone dewatering agent recovery process, in the preparation process of seaweed fiber, the normal aqueous solution that uses calcium ions is done precipitation bath when sodium alginate is when orifice is expressed into precipitation bath, the G block of two homopolymerizations in sodium alginate macromole combines through synergy, intermediate formation diamondoid access and open riverfront, when these spaces are by Ca
2+while occupying, Ca
2+multiple Sauerstoffatom generation huge legendary turtle cooperation use with on G, obtain Lalgine interchain bond tightr, act synergistically stronger, and it is the formation of gel that the interaction of chain one interchain finally will cause three-dimensional net structure, forms water-fast calcium alginate fiber.
For under very low concentrations and the very high problem of viscosity, can be by adding other polymkeric substance or tensio-active agent to solve in spinning solution.Generally, the blend solution of sodium alginate and polyvinyl alcohol (PVA) or polyoxyethylene (PEO) can be carried out to spinning, prepare the fiber of smooth and continuous, this is due to all contain in PVA and PEO-OH, it can with sodium alginate in-COO
-form strong hydrogen bond, thereby reduce sodium alginate dissociating in water, intermolecular and intramolecular electrostatic repulsion forces reduces thereupon, and spinning solution viscosity is reduced, and can make the specific conductivity of spinning solution reduce simultaneously, also can improve brute force and the elasticity of seaweed fiber.In addition, for the less problem of tangling of active chain in sodium alginate molecular chain in spinning solution, by adding cosolvent glycerol to be solved in spinning solution, the strong polarity of glycerol can be destroyed in sodium alginate molecular chain and the interaction of interchain, and form new hydrogen bond with sodium alginate, improve the chain entanglement of sodium alginate in spinning solution, surface tension and the specific conductivity of solution are reduced, improve thus the spinning property of sodium alginate, the silk being spun into is after crosslinking Treatment, remove glycerol wherein with ethanolic soln again, can obtain pure seaweed fiber.
Form fiber yarn after spinning technique after, in fiber, contain a large amount of moisture, these moisture need to be removed in acetone, therefore, in waste acetone, can retain and have some Lalgines, sodium alginate, glycerol, polyvinyl alcohol etc., and other some colloidalmaterials, for its recycling brings difficulty.
Technique based on above-mentioned and problem, the seaweed fiber silk that the utility model provides is produced in waste acetone dewatering agent recovery process, first waste acetone is added to thermal distillation, temperature is controlled at 60～100 DEG C, and acetone and water transfer gas phase to as light constituent, removes other organic compositions and impurity in waste acetone, if when temperature is too low, can cause steam output less than normal, the rate of recovery of acetone reduces, and can not reach engineering required; If when excess Temperature, although the steam output of gas phase is relatively also larger, can make other some organic impuritys also enter to gas phase, these organic impuritys can have influence on the sepn process of infiltration evaporation, and flux is reduced, and in an optimum embodiment, are 80 DEG C; Next, after gaseous phase materials is cooling, input preheater by pump and vaporizer heats up, make its temperature be increased to 80 ~ 130 DEG C, in an optimum embodiment, it is 105 DEG C, enter infiltration evaporation membrane separator group with vapor form and carry out processed, the water content in acetone/water steam is now generally between 5 ~ 20wt.%, and per-meate side is by the mode vacuumizing, penetrating fluid steam is pumped to condenser, and condensed penetrating fluid further reclaims through rectifying tower after entering tail gas absorption tank.In the feed liquid side of infiltrating and vaporizing membrane, what obtain is the recovery acetone of gaseous state, and its water content is generally 0.01 ~ 4%, completely can be again for the dewatering process of seaweed fiber silk.The gauge pressure of the feed liquid side of infiltration evaporation membrane separation apparatus can be 0～0.5MPa, and the absolute pressure of per-meate side can be 100 ~ 12000Pa, and in the middle of an optimum embodiment, the gauge pressure of feed liquid side is 0.3 MPa, and the absolute pressure of per-meate side is 1000Pa.In the middle of penetrating fluid, be mainly moisture, but also can have a certain amount of acetone, in order to make this part acetone can be recycled utilization, feed liquid in tail gas absorption tank is inputted to rectifying tower through pump, carry out rectification process, tower top obtains the acetone containing certain water yield, and the acetone of this part can be back in infiltration evaporation membrane separation apparatus again and dewater, and tower reactor obtains the high purity water discharge of water content approximately 99.5%, can reduce acetone quantity discharged.Infiltration evaporation membrane separation apparatus is preferably constituted by 1 ~ 100 membrane separation apparatus series, parallel or two kinds of modes; The film that membrane separation apparatus adopts can be molecular screen membrane, SiO
2film or PVA film isopreference water permeable membrane, be preferably molecular screen membrane.
In the process that acetone is distilled, generally can at the bottom of still kettle, retain some kettle base solutions, in these kettle base solutions, contain the macromolecular substance such as more Lalgine, sodium alginate, alginate calcium, glycerol, polyvinyl alcohol or polyoxyethylene, also contain part acetone.Can effectively be recycled in order to make these materials, preferably utilize ceramic membrane to filter kettle base solution, remove some macromole impurity wherein, colloid etc., ceramic membrane is to adopt ceramic super-filtering film, its molecular weight cut-off optimum is between 20000 ~ 200000Da, in the middle of an optimum embodiment, be 100000Da, can get rid of the residue in kettle base solution, colloid, the sodium alginate of some macromolecules or reunion and sodium alginate, avoiding these materials to reenter to having influence on seaweed fiber in dewatering tank dewaters normally, drying process, can avoid the problem that occurs that fibre strength is not high.And ceramic membrane can see through acetone, be conducive to the recycling of these materials.
Per-cent described in the utility model, without specified otherwise in the situation that, is all weight percentage.
embodiment 1
Medical seaweed fiber silk bandage is produced waste acetone dewatering agent recovery process schema, as shown in Figure 1, this technique comprises the following steps: by fresh acetone storage tank 16, acetone to be fed to seaweed fiber silk dewatering tank 1 and carries out the dehydration operation of seaweed fiber, to send into waste acetone mother liquor tank 3 from the waste acetone after seaweed fiber silk dewatering tank 1 again, input prime vaporizer 4 by charging pump again, add thermal distillation, temperature is controlled at respectively 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C, mother liquor after steaming is after condenser 5 is cooling, mix and be stored in acetone mother liquor tank 6 with rectifying tower 13 overhead distillates, controlling flow is that 300kg/h delivers into heating in preheater 7 and rear class vaporizer 8, vaporizer head temperature is controlled at 90 DEG C.Entering infiltration evaporation membrane separation apparatus 9 from the acetone steam of vaporizer top moisture 10wt.% out separates.This separation unit is by 10 groups of membrane separation apparatuss that NaA molecular screen membrane is in series, feed liquid side gauge pressure is 0.2MPa, per-meate side is connected in vacuum pump 11, by vacuumizing, its absolute pressure is controlled at 1000Pa, the feed liquid of infiltration evaporation membrane separation apparatus is controlled at 90 ~ 105 DEG C, fully carry out after heat exchange through preheater 7 from the isolated acetone steam of membrane separator group and distilled acetone mother liquor, after finished product water cooler 14 is further cooling as product-collecting in finished pot 15, the purifying acetone that obtains of dehydration is added and is entered seaweed fiber silk dewatering tank after a certain amount of fresh acetone and reuse as dewatering agent.Simultaneously, after the penetrating fluid condensation that per-meate side obtains by penetrating fluid condenser 10, enter tail gas absorption tank 12, through pump input rectifying tower 13, tower top obtains the moisture acetone soln about 8～10 wt.% to be mixed with prime vaporizer 4 distillates, be stored in acetone mother liquor tank 6, tower reactor obtains getting rid of about the waste water of 99.0～99.5 wt.%.Recover acetone result under different distillation temperatures is as shown in table 1.
Table 1
As can be seen from the table, the purity of the recovery acetone obtaining by this technique can reach more than 95%, but when excess Temperature, can cause having more organic substance impurity to enter into overhead product, and flux is affected; In the situation that temperature is on the low side, flux is not high yet.In addition, under higher temperature condition, can cause the impurity of feed liquid side of infiltrating and vaporizing membrane higher, make the purity of acetone less than normal.
embodiment 2
Medical seaweed fiber silk bandage is produced waste acetone dewatering agent recovery process schema, as shown in Figure 1, this technique comprises the following steps: to input prime vaporizer 4 by charging pump from the waste acetone mother liquor after seaweed fiber silk dewatering tank 1, add thermal distillation, temperature is controlled at respectively 80 DEG C, mother liquor after steaming is after condenser 5 is cooling, mix and be stored in acetone mother liquor tank 6 with rectifying tower 13 overhead distillates, controlling flow is that 500kg/h delivers into heating in preheater 7 and rear class vaporizer 8, and vaporizer head temperature is controlled at 70 DEG C.The acetone steam that is 7wt.% from vaporizer top water content out enters infiltration evaporation membrane separation apparatus 9 and separates.This separation unit is by 8 groups of membrane separation apparatuss that PVA infiltrating and vaporizing membrane is in series, feed liquid side gauge pressure is 0.06MPa, per-meate side vacuumizes, its absolute pressure is controlled at 700Pa, the feed liquid of infiltration evaporation membrane separation apparatus is controlled at 70 ~ 90 DEG C, fully carry out after heat exchange through preheater 7 from the isolated acetone steam of membrane separator group and distilled acetone mother liquor, after finished product water cooler 14 is further cooling, collect as product, reclaim the water content of acetone in 0.4 wt.% left and right, its purity is at 96.3 wt.%, and the average water flux of infiltrating and vaporizing membrane is about 0.49 kg/ (m
2h), the purifying acetone that obtains of dehydration is added and is entered seaweed fiber silk dewatering tank after a certain amount of fresh acetone and reuse as dewatering agent.Meanwhile, after the penetrating fluid condensation that per-meate side obtains, enter tail gas absorption tank 12, through pump input rectifying tower 13, tower top obtains the moisture acetone soln about 6 wt.% to be mixed with prime vaporizer 4 distillates, is stored in acetone mother liquor tank 6, and tower reactor obtains getting rid of about the waste water of 99.0 wt.%.
embodiment 3
Medical seaweed fiber silk bandage is produced waste acetone dewatering agent recovery process schema, as shown in Figure 1, this technique comprises the following steps: to input waste acetone mother liquor tank 3 by charging pump from the waste acetone mother liquor after seaweed fiber silk dewatering tank 1, again with charging pump input prime vaporizer 4, add thermal distillation, temperature is controlled at respectively 80 DEG C, mother liquor after steaming is after condenser 5 is cooling, mix and be stored in acetone mother liquor tank 6 with rectifying tower 13 overhead distillates, controlling flow is that 500kg/h delivers into heating in preheater 7 and rear class vaporizer 8, vaporizer head temperature is controlled at 105 DEG C.The entering infiltration evaporation membrane separation apparatus 9 containing the quality percentage amounts acetone steam that is 8wt.% and separate out from vaporizer top.This separation unit is by 6 groups of membrane separation apparatuss that NaA molecular screen membrane is in series, feed liquid side gauge pressure is 0.31MPa, per-meate side vacuumizes, its absolute pressure is controlled at 1000Pa, the feed liquid of infiltration evaporation membrane separation apparatus is controlled at 100 ~ 120 DEG C, fully carry out after heat exchange through preheater 7 from the isolated acetone steam of membrane separator group and distilled acetone mother liquor, after finished product water cooler 14 is further cooling, collect as product, reclaim the water content of acetone in 0.1 wt.% left and right, its purity is at 99.3 wt.%, and the average water flux of infiltrating and vaporizing membrane is about 1.47 kg/m
2h, the recovery acetone that obtains of dehydration is added and is entered seaweed fiber silk dewatering tank after a certain amount of fresh acetone and reuse as dewatering agent.Meanwhile, after the penetrating fluid condensation that per-meate side obtains, enter tail gas absorption tank 12, through pump input rectifying tower 13, tower top obtains the moisture acetone soln about 5 wt.% to be mixed with prime vaporizer 4 distillates, is stored in acetone mother liquor tank 6, and tower reactor obtains getting rid of about the waste water of 99.0 wt.%.
embodiment 4
Concrete technique is as follows: the aqueous solution of 3wt.% of configuration sodium alginate, add 0.5% glycerol and 0.2% polyvinyl alcohol, and mix, as spinning solution, adopt wet spinning technology, flow velocity 0.4 ml/h, 20 DEG C of spinning temperatures, humidity 40%RH, shower nozzle diameter 0.5 mm, at Ca
2+in solution, carry out, after crosslinking Treatment, the fiber obtaining being sent in the dewatering tank that acetone is housed and being processed.The recovery process step of acetone is with embodiment 2, be back in dewatering tank recovery acetone as dewatering agent, the seaweed fiber that adopts recovery acetone to prepare carries out performance test: utilize electronic mono-fiber strong force instrument, monofilament is fixed in fixture, the tension fracture brute force of test fibre single thread.Space: 10 mm, draw speed: 8 mm/min.The mechanical property of fiber is got the mean value of 50 samples, and the fibre breakage brute force of the seaweed fiber finally obtaining is 1.8 cN.
embodiment 5
Be with the difference of embodiment 4: after the kettle base solution of prime vaporizer is filtered by ceramic super-filtering film 2, filtrate is turned back in acetone mother liquor, the molecular weight cut-off of ceramic super-filtering film is 100000 Da, and filter pressure is 0.2 MPa, and crossflow velocity is 3m/s.According to detecting with method, the fibre breakage brute force of the seaweed fiber finally obtaining is 2.1 cN.
Claims (8)
1. seaweed fiber silk is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: include the seaweed fiber silk dewatering tank (1), prime vaporizer (4), rear class vaporizer (8) and the infiltration evaporation membrane separation apparatus (9) that connect successively; The per-meate side of infiltration evaporation membrane separation apparatus (9) is connected with seaweed fiber silk dewatering tank (1).
2. seaweed fiber silk according to claim 1 is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: the bottom of prime vaporizer (4) is connected with the import of ceramic super-filtering film (2), the per-meate side of ceramic super-filtering film (2) is connected with seaweed fiber silk dewatering tank (1).
3. seaweed fiber silk according to claim 2 is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: ceramic super-filtering film (2) molecular weight cut-off is between 20000 ~ 200000Da.
4. seaweed fiber silk according to claim 3 is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: ceramic super-filtering film (2) molecular weight cut-off is 100000Da.
5. seaweed fiber silk according to claim 1 is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: the per-meate side of infiltration evaporation membrane separation apparatus (9) is connected with the entrance of rectifying tower (13) by penetrating fluid condenser (10), and the tower top of rectifying tower (13) is connected in the entrance of infiltration evaporation membrane separation apparatus (9).
6. seaweed fiber silk according to claim 1 is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: the material of the infiltrating and vaporizing membrane adopting in infiltration evaporation membrane separation apparatus (9) is selected from molecular screen membrane, SiO
2film or PVA film.
7. seaweed fiber silk according to claim 1 is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: prime vaporizer (4) is connected in rear class vaporizer (8) by condenser (5), acetone mother liquor tank (6) successively; The feed liquid side of infiltration evaporation membrane separation apparatus (9) is connected in seaweed fiber silk dewatering tank (1) by finished product water cooler (14), finished pot (15).
8. seaweed fiber silk according to claim 7 is produced the retrieving arrangement of waste acetone dewatering agent, it is characterized in that: the pipeline between the pipeline between infiltration evaporation membrane separation apparatus (9) and finished product water cooler (14) and acetone mother liquor tank (6) and rear class vaporizer (8) is to carry out heat exchange by preheater (7) to be connected.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110734365A (en) * | 2019-11-28 | 2020-01-31 | 江苏九天高科技股份有限公司 | method for recovering acetone waste liquid in cephalosporin synthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110734365A (en) * | 2019-11-28 | 2020-01-31 | 江苏九天高科技股份有限公司 | method for recovering acetone waste liquid in cephalosporin synthesis |
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