CN107216248A - A kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate - Google Patents
A kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate Download PDFInfo
- Publication number
- CN107216248A CN107216248A CN201710537425.XA CN201710537425A CN107216248A CN 107216248 A CN107216248 A CN 107216248A CN 201710537425 A CN201710537425 A CN 201710537425A CN 107216248 A CN107216248 A CN 107216248A
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- CN
- China
- Prior art keywords
- dehydrogenation
- sodium formate
- sodium
- organic matter
- sodium oxalate
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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
- C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
- C07C51/377—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (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 byproduct sodium formate using in polyol production process come the technique that produces sodium oxalate, the technique discloses purification and its indirect or continuous dehydrogenation method of sodium formate, the advantage of present invention process is interval dehydrogenation or continuous dehydrogenation can be respectively adopted, two kinds of dehydrogenated operations can also be carried out simultaneously, and operation is flexible.Sodium formate refining effect is good, and production sodium oxalate is simple for process.
Description
Technical field
The present invention relates to a kind of recoverying and utilizing method of the byproduct sodium formate in chemical products production process, particularly one
Plant the recoverying and utilizing method of polynary alcohol production byproduct sodium formate.
Background technology
Manufacture polyalcohol, such as neopentyl glycol, pentaerythrite, the larger amount of sodium formate of trimethylolpropane by-product, by-product
Organic matter in sodium formate containing boiling points such as pentaerythrite, neopentyl glycol or trimethylolpropanes less than 300 DEG C.Due to polynary
Alcohol byproduct sodium formate Yield comparison is big, not disposable previously because substantial amounts of sodium formate value is low, there is some production enterprises
Industry is directly discharged, and serious pollution is caused to environment.
The recycling of current sodium formate, is mainly used for producing sodium oxalate.
The content of the invention
The present invention provides the technique that a kind of sodium formate using by-product in polynary alcohol production produces sodium oxalate.
The technical scheme is that：
The byproduct sodium formate that polynary alcohol production is produced, by Electromagnetic Heating, 260 ~ 320 DEG C of temperature of control makes therein organic
Thing, such as pentaerythrite, neopentyl glycol or trimethylolpropane are evaporated with gaseous state, and the gas volatilized is sent by air-introduced machine
Enter after water cooling tower spraying cooling, into chimney emptying, coolant reclaims organic matter therein after reaching saturation through circulation, point
It can be sold from after purification as polyol product.The sodium formate after organic matter is isolated again through dehydrogenation, generates sodium oxalate；
The certain embodiments are interval dehydrogenation or continuous dehydrogenation；
The interval certain embodiments are：The sodium formate after organic matter is isolated, heating kettle is continued to be fed into and is heated to 400-450 DEG C,
Sodium formate rapid dehydrogenation in this temperature range, generates sodium oxalate；
The continuous dehydrogenation process is：The sodium formate after organic matter is isolated, is pumped up into Venturi tube, with 500-550 DEG C of steaming
Vapour is mixed, and is heated to 390 ~ 420 DEG C through steam, the rapid dehydrogenation of sodium formate generates sodium oxalate；
The hydrogen of removing is recycled after cooled dehydrated；
The sodium oxalate of interval dehydrogenation or continuous dehydrogenation generation is admitted to cooling tower again, reclaims sodium oxalate.
The advantage of the technique is interval dehydrogenation or continuous dehydrogenation can be respectively adopted, and two kinds of dehydrogenations can also be carried out simultaneously
Operation, operation is flexible.260-320 DEG C of separation organic matter of selection, can reach satisfied separating effect.
Embodiment
Embodiment 1
The byproduct sodium formate that polynary alcohol production is produced, by Electromagnetic Heating, is heated to 260 ~ 320 DEG C, control temperature is kept
At 260 ~ 320 DEG C, make organic matter therein, such as pentaerythrite, neopentyl glycol or trimethylolpropane are fully volatilized with gaseous state
Out, the gas volatilized is sent into after water cooling tower spraying cooling by air-introduced machine, and into chimney emptying, coolant reaches through circulation
Being reclaimed after to saturation can sell after organic matter therein, separating-purifying as product, isolate the warp of the sodium formate after organic matter
Venturi tube is pumped into, is mixed with 500-550 DEG C of steam, when sodium formate is heated to 390 ~ 420 DEG C through steam, rapid dehydrogenation is raw
Into sodium oxalate, the hydrogen of abjection is recycled after cooled dehydrated.The sodium oxalate of generation is reclaimed after cooling.
Embodiment 2
The byproduct sodium formate that polynary alcohol production is produced, by Electromagnetic Heating, is heated to 260 ~ 320 DEG C, control temperature is kept
At 260 ~ 320 DEG C, make organic matter therein, such as pentaerythrite, neopentyl glycol or trimethylolpropane are fully volatilized with gaseous state
Out, the gas volatilized is sent into after water cooling tower spraying cooling by air-introduced machine, and into chimney emptying, coolant reaches through circulation
Being reclaimed after to saturation can sell after organic matter therein, separating-purifying as product, isolate the warp of the sodium formate after organic matter
Pump heating kettle, is heated to 400-450 DEG C, the rapid dehydrogenation of sodium formate generates sodium oxalate；The hydrogen of abjection is reclaimed after cooled dehydrated
Utilize.The sodium oxalate of generation is reclaimed after cooling.
Claims (2)
1. a kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate, it is characterised in that produce polynary alcohol production
Byproduct sodium formate, by Electromagnetic Heating, 260-320 DEG C of temperature of control makes organic matter therein, such as pentaerythrite, new penta 2
Alcohol or trimethylolpropane etc. are evaporated with gaseous state, and the gas volatilized sends into water cooling tower spraying cooling by air-introduced machine
Afterwards, emptied into chimney, coolant is reclaimed after reaching saturation through circulation can be used as product after organic matter therein, separating-purifying
Sell, isolate the heated dehydrogenation of the sodium formate after organic matter, generate sodium oxalate, sodium oxalate is admitted to cooling tower cooler again, return
Sodium oxalate is received, the hydrogen of removing is recycled after cooled dehydrated；
The certain embodiments are interval dehydrogenation or continuous dehydrogenation；
The interval certain embodiments are：The sodium formate after organic matter is isolated, heating kettle is continued to be fed into and is heated to 400-450 DEG C,
Sodium formate rapid dehydrogenation in this temperature range, generates sodium oxalate；
The continuous dehydrogenation process is：The sodium formate after organic matter is isolated, is pumped up into Venturi tube, with 500-550 DEG C of steaming
Vapour is mixed, and is heated to 390 ~ 420 DEG C through steam, the rapid dehydrogenation of sodium formate generates sodium oxalate.
2. a kind of technique that sodium oxalate is produced with polynary alcohol production byproduct sodium formate as claimed in claim 1, its feature exists
Individually it can be operated respectively in interval dehydrogenation or continuous dehydrogenation, also can the two progress simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537425.XA CN107216248A (en) | 2017-06-29 | 2017-06-29 | A kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537425.XA CN107216248A (en) | 2017-06-29 | 2017-06-29 | A kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107216248A true CN107216248A (en) | 2017-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710537425.XA Pending CN107216248A (en) | 2017-06-29 | 2017-06-29 | A kind of technique for producing sodium oxalate with polynary alcohol production byproduct sodium formate |
Country Status (1)
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| CN (1) | CN107216248A (en) |
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 |
| CN1903821A (en) * | 2006-08-01 | 2007-01-31 | 李安民 | Technology of producing sodium oxalate by continuous dehydrogenation of sodium formate and its equipment |
| CN1927805A (en) * | 2006-09-25 | 2007-03-14 | 李安民 | Process and apparatus of preparing sodium oxalate by superheated steam ejecting mixing fast heating-up continuous dehydrogenation |
| CN106800498A (en) * | 2015-11-25 | 2017-06-06 | 衡阳屹顺化工有限公司 | A kind of process units of neopentyl glycol |
-
2017
- 2017-06-29 CN CN201710537425.XA patent/CN107216248A/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 |
| CN1903821A (en) * | 2006-08-01 | 2007-01-31 | 李安民 | Technology of producing sodium oxalate by continuous dehydrogenation of sodium formate and its equipment |
| CN1927805A (en) * | 2006-09-25 | 2007-03-14 | 李安民 | Process and apparatus of preparing sodium oxalate by superheated steam ejecting mixing fast heating-up continuous dehydrogenation |
| CN106800498A (en) * | 2015-11-25 | 2017-06-06 | 衡阳屹顺化工有限公司 | A kind of process units of neopentyl glycol |
Non-Patent Citations (1)
| Title |
|---|
| 杨梦青等: "季戊四醇付产甲酸钠分离提纯用于制备草酸钠的研究", 《安徽化工》 * |
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| PB01 | Publication | ||
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Application publication date: 20170929 |