CN106800498A - A kind of process units of neopentyl glycol - Google Patents
A kind of process units of neopentyl glycol Download PDFInfo
- Publication number
- CN106800498A CN106800498A CN201510828839.9A CN201510828839A CN106800498A CN 106800498 A CN106800498 A CN 106800498A CN 201510828839 A CN201510828839 A CN 201510828839A CN 106800498 A CN106800498 A CN 106800498A
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- CN
- China
- Prior art keywords
- neopentyl glycol
- kettle
- still
- dry channel
- process units
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- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical group OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 15
- 238000010521 absorption reaction Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000004821 distillation Methods 0.000 claims abstract description 21
- 230000018044 dehydration Effects 0.000 claims abstract description 20
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000004280 Sodium formate Substances 0.000 claims description 8
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 8
- 235000019254 sodium formate Nutrition 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000000047 product Substances 0.000 description 11
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 5
- 235000019253 formic acid Nutrition 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical group CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- -1 cycloalkyl hydrocarbon Chemical class 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000002917 insecticide Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 2
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 2
- 229940039790 sodium oxalate Drugs 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of process units of neopentyl glycol, including recovery unit and refined unit, recovery unit includes drier, drier includes dry channel and the conveyer belt being arranged in dry channel, some electric heaters are installed on the inwall of dry channel, the end of dry channel offers air-vent, and air-vent is connected to refined unit；Refined unit includes absorption kettle, dehydration distillation still, condenser, wash still and finished product kettle, and the top of absorption kettle is provided with air inlet pipe, and is connected to air-vent using air inlet pipe, and filler is offered at the top of absorption kettle；Dehydration distillation still is connected to the liquid outlet of absorption kettle bottom, the rectifying column of one is provided with the top of dehydration distillation still, condenser is connected at the top of rectifying column to condense material, the outlet of condenser sets manifold, it is respectively connecting to wash still and finished product kettle, the bottom of wash still sets circulating line tieback to the top for being dehydrated distillation still, and vavuum pump is respectively connected with the top of wash still and finished product kettle.The present invention improves the product purity of neopentyl glycol.
Description
Technical field
The invention belongs to technical field of chemical, a kind of process units of neopentyl glycol is specifically referred to.
Background technology
It is most common using sodium formate method production neopentyl glycol.Sodium formate, slightly chemical formula HCOONa2H2O, formic acid smell.Soluble in water and glycerine, is slightly soluble in methyl alcohol.253 DEG C of fusing point（Anhydride）, it is poisonous.Hydrogen and sodium oxalate are decomposed into during heat-flash.As leather industry, the camouflage acid in chromium tanning for catalyst and stablizes synthetics, the reducing agent of dyeing, for producing sodium hydrosulfite, oxalic acid and formic acid.It is white or pale yellow crystals solid, slightly hygroscopy under normal temperature.It is micro- to have formic acid smell.There is hygroscopicity.Sodium oxalate and hydrogen are resolved into during high temperature, sodium carbonate is then generated.It is dissolved in about 1.3 parts of water.Glycerine is dissolved in, methyl alcohol, octanol is slightly soluble in, insoluble in ether.Its aqueous solution is in alkalescence.Relative density 1.92.253 DEG C of fusing point.It is irritant.Commodity often contain 2 molecular crystalline water.As leather industry,
Camouflage acid in chromium tanning, for catalyst and stablizing synthetics, the reducing agent of dyeing, for producing sodium hydrosulfite, oxalic acid and formic acid.Precipitate precious metals.The complex ion of trivalent metal can be formed in the solution.There is cushioning effect, the pH value of strong acid can be corrected.For phthalic resin coating, plasticizer, high explosives, acid resisting material, aeroengine oil, adhesive additive.
Neopentyl glycol (NPG), white crystalline solid, odorless, with hygroscopicity.Mainly for the production of the plasticizer of unsaturated-resin, oil-free alkyd resin, polyurethane foam plastic and elastomer, surfactant, insulating materials, printing-ink, polymerization inhibitor, synthesis aeroengine oil oil dope etc.；Meanwhile, neopentyl glycol or excellent solvent, the selection that can be used for aromatic hydrocarbons and cycloalkyl hydrocarbon are separated；Its amine baking varnish has good gloss retention and not yellowing；Also act as production stabilizer, the raw material of insecticide.
Synthetic method：1. sodium formate method isobutylaldehyde is condensed the generation tertiary butyraldehyde of hydroxyl with formaldehyde in the presence of 30-35 DEG C, pH value 9-11, base catalyst, and neopentyl glycol is reduced under basic conditions with excess formaldehyde, and formaldehyde is then oxidized, and generates sodium formate with alkali effect.Reaction solution is neutralized with formic acid, vacuum distillation dehydration, and the layered extraction of concentrate after removing sodium formate, is cooled down, crystallizes, separated, and obtains finished product.2. hydrogenation method obtains hydroxy pivalin aldehyde by isobutylaldehyde and formaldehyde through condensation, then hydrogenated reduction and obtain.
Main application：Neopentyl glycol has many uses, mainly as the plasticizer of production unsaturated polyester resin, oil-free alkyd resin, polyurethane foam plastics and elastomer, the additive of senior lubricant and other fine chemicals.Neopentyl glycol is excellent solvent, and the selection that can be used for aromatic hydrocarbons and cycloalkyl hydrocarbon is separated.Neopentyl glycol has water-fast, chemical-resistant resistance, weatherability.Its amine baking varnish has good gloss retention and not yellowing.Also act as production polymerization inhibitor, stabilizer, the raw material of insecticide.
But, the neopentyl glycol produced using current device, purity is poor, and without supporting refining system.Therefore, necessary a kind of process units of neopentyl glycol of design.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of process units of neopentyl glycol.
Present disclosure includes：
A kind of process units of neopentyl glycol, including recovery unit and refined unit, the recovery unit includes drier, the drier includes dry channel and the conveyer belt being arranged in the dry channel, some electric heaters are installed on the inwall of the dry channel, the end of the dry channel offers air-vent, and the air-vent is connected to the refined unit；
The refined unit includes absorption kettle, dehydration distillation still, condenser, wash still and finished product kettle, and the top of the absorption kettle is provided with air inlet pipe, and is connected to the air-vent using the air inlet pipe, and filler is offered at the top of the absorption kettle；
The dehydration distillation still is connected to the liquid outlet of the absorption kettle bottom, the rectifying column of one is provided with the top of the dehydration distillation still, the condenser is connected at the top of the rectifying column to condense material, the outlet of the condenser sets manifold, it is respectively connecting to the wash still and finished product kettle, the bottom of the wash still sets circulating line tieback to the top of the dehydration distillation still, and vavuum pump is respectively connected with the top of the wash still and finished product kettle.
In the present invention, as a kind of perferred technical scheme, the entrance of the dry channel is provided with material distribution grid.
In the present invention, as a kind of perferred technical scheme, the material distribution grid is arranged at the top of the conveyer belt, and the material distribution grid has height adjustment mechanism.
In the present invention, as a kind of perferred technical scheme, the height adjustment mechanism includes cylinder, and the piston rod of the cylinder is connected with the material distribution grid.
In the present invention, as a kind of perferred technical scheme, blower fan is provided between the air-vent and the refined unit.
In the present invention, as a kind of perferred technical scheme, the end of the dry channel is provided with and dries sodium formate outlet.
In the present invention, as a kind of perferred technical scheme, the air inlet pipe extends to the bottom of the absorption kettle.
The beneficial effects of the invention are as follows,
Recovery unit of the invention includes drier, the drier includes dry channel and the conveyer belt being arranged in the dry channel, some electric heaters are installed, the end of the dry channel offers air-vent, and the air-vent is connected to the refined unit on the inwall of the dry channel；Refined unit includes absorption kettle, dehydration distillation still, condenser, wash still and finished product kettle, and the top of the absorption kettle is provided with air inlet pipe, and is connected to the air-vent using the air inlet pipe, and filler is offered at the top of the absorption kettle；The dehydration distillation still is connected to the liquid outlet of the absorption kettle bottom, the rectifying column of one is provided with the top of the dehydration distillation still, the condenser is connected at the top of the rectifying column to condense material, the outlet of the condenser sets manifold, it is respectively connecting to the wash still and finished product kettle, the bottom of the wash still sets circulating line tieback to the top of the dehydration distillation still, and vavuum pump is respectively connected with the top of the wash still and finished product kettle.Based on this structure, the present invention can be reclaimed the neopentyl glycol in material with gas procedure, and be refined by way of absorbing, distilling, condense, circulate distillation, substantially increase the product purity of neopentyl glycol.
Brief description of the drawings
Accompanying drawing is equipment flowsheet schematic diagram of the invention.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, with reference to specific embodiment, the present invention is expanded on further.
As shown in drawings, a kind of process units of neopentyl glycol, including recovery unit and refined unit, the recovery unit includes drier 1, the drier 1 includes dry channel 2 and the conveyer belt 3 being arranged in the dry channel 2, some electric heaters 4 are installed, the end of the dry channel 2 offers air-vent 5, and the air-vent 5 is connected to the refined unit on the inwall of the dry channel 2；The refined unit includes absorption kettle 6, dehydration distillation still 7, condenser 8, wash still 9 and finished product kettle 10, and the top of the absorption kettle 6 is provided with air inlet pipe, and is connected to the air-vent 5 using the air inlet pipe, and the top of the absorption kettle 6 offers filler；The dehydration distillation still 7 is connected to the liquid outlet of the bottom of the absorption kettle 6, the top of the dehydration distillation still 7 is provided with the rectifying column 11 of one, the top of the rectifying column 11 is connected to the condenser 8 and material is condensed, the outlet of the condenser 8 sets manifold, it is respectively connecting to the wash still 9 and finished product kettle 10, the bottom of the wash still 9 sets circulating line tieback to the top of the dehydration distillation still 7, and the top of the wash still 9 and finished product kettle 10 is respectively connected with vavuum pump 12.
In the present invention, the entrance of the dry channel 2 is provided with material distribution grid 13, the material distribution grid 13 is arranged at the top of the conveyer belt 3, and the material distribution grid 13 has height adjustment mechanism, the height adjustment mechanism includes cylinder 14, and the piston rod of the cylinder 14 is connected with the material distribution grid 13.So, the height of material distribution grid 13 can be adjusted using cylinder 14, that is, have adjusted the gap between material distribution grid 13 and conveyer belt 3, effectively have adjusted material and shakeout thickness in conveyer belt.
In the present invention, blower fan 15 is provided between the air-vent 5 and the refined unit.Gas can be well introduced in follow-up refined unit.
In the present invention, the end of the dry channel 2 is provided with and dries sodium formate outlet 16.
In the present invention, the air inlet pipe extends to the bottom of the absorption kettle.So that gas is sailed against the current from absorption kettle, the efficiency of absorption is improve.
Those of ordinary skill in the art should be understood：The discussion of any of the above embodiment is exemplary only, it is not intended that imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, can also be combined between technical characteristic in above example or different embodiments, step can be realized with random order, and there are many other changes of different aspect of the invention as described above, and for simplicity, they are provided not in details.Therefore, all any omission, modification, equivalent, improvement within the spirit and principles in the present invention, made etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of process units of neopentyl glycol, including recovery unit and refined unit, it is characterized in that, the recovery unit includes drier, the drier includes dry channel and the conveyer belt being arranged in the dry channel, some electric heaters are installed, the end of the dry channel offers air-vent, and the air-vent is connected to the refined unit on the inwall of the dry channel；The refined unit includes absorption kettle, dehydration distillation still, condenser, wash still and finished product kettle, and the top of the absorption kettle is provided with air inlet pipe, and is connected to the air-vent using the air inlet pipe, and filler is offered at the top of the absorption kettle；The dehydration distillation still is connected to the liquid outlet of the absorption kettle bottom, the rectifying column of one is provided with the top of the dehydration distillation still, the condenser is connected at the top of the rectifying column to condense material, the outlet of the condenser sets manifold, it is respectively connecting to the wash still and finished product kettle, the bottom of the wash still sets circulating line tieback to the top of the dehydration distillation still, and vavuum pump is respectively connected with the top of the wash still and finished product kettle.
2. a kind of process units of neopentyl glycol as claimed in claim 1, it is characterized in that, the entrance of the dry channel is provided with material distribution grid.
3. a kind of process units of neopentyl glycol as claimed in claim 2, it is characterized in that, the material distribution grid is arranged at the top of the conveyer belt, and the material distribution grid has height adjustment mechanism.
4. a kind of process units of neopentyl glycol as claimed in claim 3, it is characterized in that, the height adjustment mechanism includes cylinder, and the piston rod of the cylinder is connected with the material distribution grid.
5. a kind of process units of neopentyl glycol as claimed in claim 1, it is characterized in that, it is provided with blower fan between the air-vent and the refined unit.
6. a kind of process units of neopentyl glycol as claimed in claim 1, it is characterized in that, the end of the dry channel is provided with and dries sodium formate outlet.
7. a kind of process units of neopentyl glycol as claimed in claim 1, it is characterized in that, the air inlet pipe extends to the bottom of the absorption kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828839.9A CN106800498A (en) | 2015-11-25 | 2015-11-25 | A kind of process units of neopentyl glycol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828839.9A CN106800498A (en) | 2015-11-25 | 2015-11-25 | A kind of process units of neopentyl glycol |
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| CN106800498A true CN106800498A (en) | 2017-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510828839.9A Pending CN106800498A (en) | 2015-11-25 | 2015-11-25 | A kind of process units of neopentyl glycol |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216248A (en) * | 2017-06-29 | 2017-09-29 | 宁夏海纳川化工技术有限公司 | A kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate |
| CN110759821A (en) * | 2019-11-23 | 2020-02-07 | 张家港市华昌新材料科技有限公司 | Neopentyl glycol production raw material recovery system and recovery method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258668A (en) * | 1998-12-26 | 2000-07-05 | 张少华 | Method of recovering neopentyl diol from sodium formate as by product |
| CN101698639A (en) * | 2009-11-03 | 2010-04-28 | 中国海洋石油总公司 | Method for recycling sodium formate products from coarse sodium formate of byproduct of polyhydric alcohol |
| CN202485363U (en) * | 2012-03-14 | 2012-10-10 | 云南驰宏锌锗股份有限公司 | High-efficiency and energy-saving infrared light-wave drying device |
| CN203545047U (en) * | 2013-10-31 | 2014-04-16 | 桐乡市绿康菊业有限公司 | Chamomile flattening device used in chrysanthemum enzyme deactivation machine |
-
2015
- 2015-11-25 CN CN201510828839.9A patent/CN106800498A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258668A (en) * | 1998-12-26 | 2000-07-05 | 张少华 | Method of recovering neopentyl diol from sodium formate as by product |
| CN101698639A (en) * | 2009-11-03 | 2010-04-28 | 中国海洋石油总公司 | Method for recycling sodium formate products from coarse sodium formate of byproduct of polyhydric alcohol |
| CN202485363U (en) * | 2012-03-14 | 2012-10-10 | 云南驰宏锌锗股份有限公司 | High-efficiency and energy-saving infrared light-wave drying device |
| CN203545047U (en) * | 2013-10-31 | 2014-04-16 | 桐乡市绿康菊业有限公司 | Chamomile flattening device used in chrysanthemum enzyme deactivation machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216248A (en) * | 2017-06-29 | 2017-09-29 | 宁夏海纳川化工技术有限公司 | A kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate |
| CN110759821A (en) * | 2019-11-23 | 2020-02-07 | 张家港市华昌新材料科技有限公司 | Neopentyl glycol production raw material recovery system and recovery method thereof |
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Application publication date: 20170606 |