CN106748743A - A kind of evaporative crystallization technique of sodium formate production - Google Patents
A kind of evaporative crystallization technique of sodium formate production Download PDFInfo
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- CN106748743A CN106748743A CN201510826622.4A CN201510826622A CN106748743A CN 106748743 A CN106748743 A CN 106748743A CN 201510826622 A CN201510826622 A CN 201510826622A CN 106748743 A CN106748743 A CN 106748743A
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- sodium formate
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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
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
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Abstract
A kind of evaporative crystallization technique of sodium formate production, comprises the following steps：It is 38 ~ 40wt% by sodium formate solution low-temperature evaporation to percetage by weight containing sodium formate, then solution is imported in evaporator and is evaporated；The vacuum for adjusting evaporator is -0.5 ~ 0.9MPa, and heating steam flow is 1.3 ~ 1.7 cubes ms/h, and heating-up temperature is maintained at 85 ~ 97 DEG C, and moisture removal is removed by evaporator evaporation, and solution is concentrated into dope more than 45wt% containing sodium formate；The dope that will be obtained is crystallized.Based on process above, the present invention can greatly reduce " running material " phenomenon that sodium formate occurs in evaporative crystallization, sodium formate product quality be improve, while decreasing maintenance of equipment number of times, it is ensured that the continuity of production.
Description
Technical field
The invention belongs to chemical technology field, a kind of evaporative crystallization technique of sodium formate production is specifically referred to.
Background technology
Sodium formate is dissolved in glycerine, ethanol, 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.
Sodium formate mainly has following production method：
Synthesis technique is produced, because major product is sodium formate, it is considered that the technique is the technique of professional production sodium formate.
Advantage is：Due to not containing other alcohols, production carboxylic acid Yield is high.Colourity of the process purity more than 97% is also relatively good, and export volume is larger.Byproduct from neopentyl glycol production method, a kind of is the disproportionation processes production of traditional mode of production neopentyl glycol.Advantage：Neopentyl glycol containing is high.Because price is low, color is black, and most of producer produces formic acid after having carried neopentyl glycol.Another kind is disproportionation modified technique production, is also called neopentyl glycol methanol technics.Advantage：White color, content is high, and should not lump, and suitable application area is wide.Export volume is big.Pentaerythrite by-product method, a kind of is conventionally produced.Advantage：Price is low, and color is faint yellow.It is a kind of be it is conventionally produced on the basis of purify.Advantage：Color is whiter, and content is high, and export volume is big.There is aldol reaction generation 2.2- dihydroxymethyl butyraldehyde under base catalyst effect with formalin in hutanal, dihydroxymethyl butyraldehyde occurs to intersect cannizzaro's reaction generation trimethylolpropane again with excessive formaldehyde under basic conditions, formaldehyde is oxidized generation formic acid, in formic acid and NaOH and generates sodium formate.
But, there is " running material " phenomenon of evaporative crystallization in actual production, often in sodium formate, causes mainly due to foam, causes being greatly reduced for sodium formate product quality.
Therefore, a kind of evaporative crystallization technique of sodium formate production of necessary design.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of evaporative crystallization technique of sodium formate production.
Present disclosure includes：
A kind of evaporative crystallization technique of sodium formate production, comprises the following steps：
（1）It is 38-40wt% by sodium formate solution low-temperature evaporation to percetage by weight containing sodium formate, then solution is imported in evaporator and is evaporated；
（2）The vacuum for adjusting evaporator is-0.5-- 0.9MPa, and heating steam flow is 1.3-1.7 cubes m/h, and heating-up temperature is maintained at 85-97 DEG C, and moisture removal is removed by evaporator evaporation, and solution is concentrated into dope more than 45wt% containing sodium formate；
（3）The dope that will be obtained is crystallized.
In the present invention, as a kind of perferred technical scheme, step（1）In, 30wt% containing organic matter in sodium formate solution.
In the present invention, as a kind of perferred technical scheme, step（2）In, every 12-15 hours in evaporator, using cleaning agent cleaning once.
In the present invention, as a kind of perferred technical scheme, step（2）In, cleaning agent uses trichloro ethylene.
In the present invention, as a kind of perferred technical scheme, step（2）In, defoamer is added while cleaning.
In the present invention, as a kind of perferred technical scheme, step（2）In, defoamer uses polyoxyethylene polyoxypropylene pentaerythrite ether.
The beneficial effects of the invention are as follows,
The present invention comprises the following steps：It is 38-40wt% by sodium formate solution low-temperature evaporation to percetage by weight containing sodium formate, then solution is imported in evaporator and is evaporated；The vacuum for adjusting evaporator is-0.5-0.9MPa, and heating steam flow is 1.3-1.7 cubes m/h, and heating-up temperature is maintained at 85-97 DEG C, and moisture removal is removed by evaporator evaporation, and solution is concentrated into dope more than 45wt% containing sodium formate；The dope that will be obtained is crystallized.Based on process above, the present invention can greatly reduce " running material " phenomenon that sodium formate occurs in evaporative crystallization, sodium formate product quality be improve, while decreasing maintenance of equipment number of times, it is ensured that the continuity of production.
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.
Embodiment 1
A kind of evaporative crystallization technique of sodium formate production, comprises the following steps：
（1）By sodium formate solution（30wt% containing organic matter in sodium formate solution）Low-temperature evaporation to percetage by weight containing sodium formate is 38wt%, then imports in evaporator solution and evaporates；
（2）The vacuum for adjusting evaporator is -0.5MPa, heating steam flow is 1.3 cubes ms/h, heating-up temperature is maintained at 85 DEG C, moisture removal is gone by evaporator evaporation, solution is concentrated to dope more than 45wt% containing sodium formate, every 12 hours in evaporator, using cleaning agent cleaning once, cleaning agent uses trichloro ethylene, adds defoamer, defoamer to use polyoxyethylene polyoxypropylene pentaerythrite ether while cleaning；
（3）The dope that will be obtained is crystallized.
Embodiment 2
A kind of evaporative crystallization technique of sodium formate production, comprises the following steps：
（1）By sodium formate solution（30wt% containing organic matter in sodium formate solution）Low-temperature evaporation to percetage by weight containing sodium formate is 38-40wt%, then imports in evaporator solution and evaporates；
（2）It is -0.9MPa to adjust the vacuum of evaporator, heating steam flow is 1.7 cubes ms/h, heating-up temperature is maintained at 97 DEG C, moisture removal is gone by evaporator evaporation, solution is concentrated to dope more than 45wt% containing sodium formate, every 15 hours in evaporator, using cleaning agent cleaning once, cleaning agent uses trichloro ethylene, adds defoamer, defoamer to use polyoxyethylene polyoxypropylene pentaerythrite ether while cleaning；
（3）The dope that will be obtained is crystallized.
Embodiment 3
A kind of evaporative crystallization technique of sodium formate production, comprises the following steps：
（1）By sodium formate solution（30wt% containing organic matter in sodium formate solution）Low-temperature evaporation to percetage by weight containing sodium formate is 39wt%, then imports in evaporator solution and evaporates；
（2）The vacuum for adjusting evaporator is -0.7MPa, heating steam flow is 1.5 cubes ms/h, heating-up temperature is maintained at 90 DEG C, moisture removal is gone by evaporator evaporation, solution is concentrated to dope more than 45wt% containing sodium formate, every 14 hours in evaporator, using cleaning agent cleaning once, cleaning agent uses trichloro ethylene, adds defoamer, defoamer to use polyoxyethylene polyoxypropylene pentaerythrite ether while cleaning；
（3）The dope that will be obtained is crystallized.
Embodiment 1-3 test parameters such as following tables：
| Project | Run material number of times/moon |
| Embodiment 1 | 1 |
| Embodiment 2 | 1 |
| Embodiment 3 | 0 |
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 (6)
1. the evaporative crystallization technique that a kind of sodium formate is produced, it is characterized in that, comprise the following steps：
（1）It is 38-40wt% by sodium formate solution low-temperature evaporation to percetage by weight containing sodium formate, then solution is imported in evaporator and is evaporated；
（2）The vacuum for adjusting evaporator is-0.5-- 0.9MPa, and heating steam flow is 1.3-1.7 cubes m/h, and heating-up temperature is maintained at 85-97 DEG C, and moisture removal is removed by evaporator evaporation, and solution is concentrated into dope more than 45wt% containing sodium formate；
（3）The dope that will be obtained is crystallized.
2. the evaporative crystallization technique that a kind of sodium formate as claimed in claim 1 is produced, it is characterized in that, step（1）In, 30wt% containing organic matter in sodium formate solution.
3. the evaporative crystallization technique that a kind of sodium formate as claimed in claim 1 is produced, it is characterized in that, step（2）In, every 12-15 hours in evaporator, using cleaning agent cleaning once.
4. the evaporative crystallization technique that a kind of sodium formate as claimed in claim 3 is produced, it is characterized in that, step（2）In, cleaning agent uses trichloro ethylene.
5. the evaporative crystallization technique that a kind of sodium formate as claimed in claim 4 is produced, it is characterized in that, step（2）In, defoamer is added while cleaning.
6. the evaporative crystallization technique that a kind of sodium formate as claimed in claim 5 is produced, it is characterized in that, step（2）In, defoamer uses polyoxyethylene polyoxypropylene pentaerythrite ether.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249496A (en) * | 2018-02-02 | 2018-07-06 | 张罡 | High level salt solution is efficiently without fouling electromagnetism evaporative crystallization technique and unit |
| CN110746292A (en) * | 2019-09-18 | 2020-02-04 | 山东凯米科环保科技有限公司 | Purification method of crude sodium formate as byproduct of polyol |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139248A (en) * | 2007-09-19 | 2008-03-12 | 刘荣 | Method for generating polyvalent alcohol and formiate by extractive crystallization separating cannizzaro process |
| CN101189206A (en) * | 2005-05-04 | 2008-05-28 | 巴斯福股份公司 | Production of sodium diformate |
| 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 |
| CN102516059A (en) * | 2011-12-13 | 2012-06-27 | 宜宾天原集团股份有限公司 | Method for producing sodium formate by using coal gas |
| CN103450001A (en) * | 2013-09-23 | 2013-12-18 | 湖北宜化化工股份有限公司 | Method and equipment for concentrating sodium formate in pentaerythritol production |
-
2015
- 2015-11-25 CN CN201510826622.4A patent/CN106748743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189206A (en) * | 2005-05-04 | 2008-05-28 | 巴斯福股份公司 | Production of sodium diformate |
| CN101139248A (en) * | 2007-09-19 | 2008-03-12 | 刘荣 | Method for generating polyvalent alcohol and formiate by extractive crystallization separating cannizzaro process |
| 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 |
| CN102516059A (en) * | 2011-12-13 | 2012-06-27 | 宜宾天原集团股份有限公司 | Method for producing sodium formate by using coal gas |
| CN103450001A (en) * | 2013-09-23 | 2013-12-18 | 湖北宜化化工股份有限公司 | Method and equipment for concentrating sodium formate in pentaerythritol production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249496A (en) * | 2018-02-02 | 2018-07-06 | 张罡 | High level salt solution is efficiently without fouling electromagnetism evaporative crystallization technique and unit |
| CN110746292A (en) * | 2019-09-18 | 2020-02-04 | 山东凯米科环保科技有限公司 | Purification method of crude sodium formate as byproduct of polyol |
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