CN1915954A - Method for producing formic acid through phosphoric acid and sodium formate - Google Patents
Method for producing formic acid through phosphoric acid and sodium formate Download PDFInfo
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- CN1915954A CN1915954A CN 200610124470 CN200610124470A CN1915954A CN 1915954 A CN1915954 A CN 1915954A CN 200610124470 CN200610124470 CN 200610124470 CN 200610124470 A CN200610124470 A CN 200610124470A CN 1915954 A CN1915954 A CN 1915954A
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- formic acid
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- phosphoric acid
- sodium
- dihydrogen phosphate
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Abstract
This invention discloses a method for preparing formic acid from phosphoric acid and sodium formate. The method comprises: reacting CO produced from yellow phosphorus manufacture with caustic soda to obtain sodium formate, then reacting with phosphoric acid, dehydrating with P2O5, and distilling to obtain formic acid. The method can reduce CO2 emission, thus is environmentally friendly. Besides, the method can lower the cost of yellow phosphorus and formic acid manufacture.
Description
Technical field
The present invention relates to a kind of carbon monoxide tail gas of generation in the yellow phosphorus electric furnace production and method of phosphoric acid production formic acid utilized, particularly a kind of method of producing formic acid with phosphoric acid and sodium formiate.
Background technology
All adopt the reaction of sulfuric acid and sodium formiate to produce formic acid at present, in reaction process, give off a large amount of carbon dioxides, contaminate environment.
Summary of the invention
The objective of the invention is to provide a kind of method of producing formic acid with phosphoric acid and sodium formiate; it replaces sulfuric acid and sodium formiate reaction with phosphoric acid; in reaction, can reduce the discharging of carbon dioxide; the protection environment; and promoted comprehensive utilization of resources, the comprehensive production cost of yellow phosphorus and formic acid is declined to a great extent.
The object of the present invention is achieved like this: a kind of method of producing formic acid with phosphoric acid and sodium formiate, and step is:
A. be raw material with the tail gas in the phosphorus production, handle that carbon monoxide that obtains and caustic soda building-up reactions through condensing crystal, separation, drying, obtain sodium formiate by purification, desulfurization;
B. add phosphoric acid earlier in reactor, and then add sodium formiate, control reaction temperature is reacted under the effect of stirring at 40 ℃-50 ℃, obtains formic acid and sodium dihydrogen phosphate;
C. formic acid that the b step is obtained and sodium dihydrogen phosphate are imported vaporizer, add Vanadium Pentoxide in FLAKES from the vaporizer top, slough moisture content in the solution, after stirring, use steam heating, distill, the control distillation temperature is at 110 ℃-140 ℃, and gas phase enters water cooler, cools off with tap water, cooled overhead product is formic acid, and liquid phase is a sodium dihydrogen phosphate.
Add-on in weight part phosphoric acid is 600-800, and the add-on of sodium formiate is 600-700, and the add-on of Vanadium Pentoxide in FLAKES is 180-220.
The present invention is because the carbon monoxide tail gas that produces in the production of employing yellow phosphorus electric furnace is raw material; with the synthetic sodium formiate of producing of caustic soda; so promoted comprehensive utilization of resources; reduce the discharging of carbon dioxide; the protection environment; and phosphoric acid and sodium formiate reaction generate sodium dihydrogen phosphate, and higher economic value is arranged, and the comprehensive production cost of yellow phosphorus and formic acid is declined to a great extent.The present invention also has advantages such as technology is simple, easy to operate.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a technological process block-diagram of the present invention.
Fig. 1 double as Figure of abstract.
Embodiment
Embodiment one
As shown in Figure 1, be raw material with the carbon monoxide tail gas in the phosphorus production, to handle by purification, desulfurization, carbon monoxide that obtains and caustic soda building-up reactions through condensing crystal, separation, drying, obtain sodium formiate; The phosphoric acid that in reactor, adds 600Kg earlier, and then the sodium formiate of adding 600Kg, control reaction temperature is at 40 ℃, under the effect of stirring, react, obtain formic acid and sodium dihydrogen phosphate, after the outlet of reactor bottom enters vaporizer, treats that solution all enters vaporizer, add the 180Kg Vanadium Pentoxide in FLAKES from the vaporizer top, slough moisture content in the solution, after stirring, use steam heating, distill, the control distillation temperature is at 110 ℃, and gas phase enters water cooler, cools off with tap water, cooled overhead product is formic acid, and liquid phase is a sodium dihydrogen phosphate.
Isolated sodium dihydrogen phosphate carries out phosphatic production.
Embodiment two
As shown in Figure 1, be raw material with the carbon monoxide tail gas in the phosphorus production, to handle by purification, desulfurization, carbon monoxide that obtains and caustic soda building-up reactions through condensing crystal, separation, drying, obtain sodium formiate; The phosphoric acid that in reactor, adds 760Kg earlier, and then the sodium formiate of adding 650Kg, control reaction temperature is at 50 ℃, under the effect of stirring, react, obtain formic acid and sodium dihydrogen phosphate, after the outlet of reactor bottom enters vaporizer, treats that solution all enters vaporizer, add the 200Kg Vanadium Pentoxide in FLAKES from the vaporizer top, slough moisture content in the solution, after stirring, use steam heating, distill, the control distillation temperature is at 130 ℃, and gas phase enters water cooler, cools off with tap water, cooled overhead product is formic acid, and liquid phase is a sodium dihydrogen phosphate.
Isolated sodium dihydrogen phosphate carries out phosphatic production.
Embodiment three
As shown in Figure 1, be raw material with the carbon monoxide tail gas in the phosphorus production, to handle by purification, desulfurization, carbon monoxide that obtains and caustic soda building-up reactions through condensing crystal, separation, drying, obtain sodium formiate; The phosphoric acid that in reactor, adds 800Kg earlier, and then the sodium formiate of adding 700Kg, control reaction temperature is at 45 ℃, under the effect of stirring, react, obtain formic acid and sodium dihydrogen phosphate, after the outlet of reactor bottom enters vaporizer, treats that solution all enters vaporizer, add the 220Kg Vanadium Pentoxide in FLAKES from the vaporizer top, slough moisture content in the solution, after stirring, use steam heating, distill, the control distillation temperature is at 140 ℃, and gas phase enters water cooler, cools off with tap water, cooled overhead product is formic acid, and liquid phase is a sodium dihydrogen phosphate.
Isolated sodium dihydrogen phosphate carries out phosphatic production.
Claims (2)
1, a kind of method of producing formic acid with phosphoric acid and sodium formiate is characterized in that step is:
A. be raw material with the carbon monoxide tail gas in the phosphorus production, handle that carbon monoxide that obtains and caustic soda building-up reactions through condensing crystal, separation, drying, obtain sodium formiate by purification, desulfurization;
B. add earlier in reactor, and then add, control reaction temperature is reacted under the effect of stirring at 40 ℃-50 ℃, obtains formic acid and sodium dihydrogen phosphate;
C. formic acid that the b step is obtained and sodium dihydrogen phosphate are imported vaporizer, add Vanadium Pentoxide in FLAKES from the vaporizer top, slough moisture content in the solution, after stirring, use steam heating, distill, the control distillation temperature is at 110 ℃-140 ℃, and gas phase enters water cooler, cools off with tap water, cooled overhead product is formic acid, and liquid phase is a sodium dihydrogen phosphate.
2, a kind of method of producing formic acid with phosphoric acid and sodium formiate according to claim 1, it is characterized in that: the add-on in weight part phosphoric acid is 600-800, and the add-on of sodium formiate is 600-700, and the add-on of Vanadium Pentoxide in FLAKES is 180-220.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610124470 CN1915954A (en) | 2006-09-07 | 2006-09-07 | Method for producing formic acid through phosphoric acid and sodium formate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200610124470 CN1915954A (en) | 2006-09-07 | 2006-09-07 | Method for producing formic acid through phosphoric acid and sodium formate |
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| CN1915954A true CN1915954A (en) | 2007-02-21 |
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| CN 200610124470 Pending CN1915954A (en) | 2006-09-07 | 2006-09-07 | Method for producing formic acid through phosphoric acid and sodium formate |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009026773A1 (en) * | 2007-08-24 | 2009-03-05 | Yibin Tianyuan Group Company Limited | Process for producing formic acid by acidifying sodium formate with acidifying agent |
| WO2009026774A1 (en) * | 2007-08-24 | 2009-03-05 | Yibin Tianyuan Group Company Limited | The process of producing formic acid with phosphoric acid extracted and sodium formate |
| CN102320949A (en) * | 2011-06-15 | 2012-01-18 | 浙江大学 | Multistage acidification reaction device for formic acid continuous production |
| CN101665423B (en) * | 2009-08-11 | 2012-11-21 | 绵阳启明星磷化工有限公司 | Method for preparing methanoic acid by potassium formate acidized by phosphoric acid |
| CN104016320A (en) * | 2013-02-28 | 2014-09-03 | 黄冈师范学院 | Environmental-friendly process for concentrating diluted formic acid in hot-method phosphoric acid production process |
| CN104788304A (en) * | 2015-03-26 | 2015-07-22 | 重庆川东化工（集团）有限公司 | Method for preparing high-purity anhydrous formic acid from inorganic acid acidification formate |
| CN105503576A (en) * | 2014-10-29 | 2016-04-20 | 张湉 | Preparation method for formic acid |
| CN111302927A (en) * | 2020-02-14 | 2020-06-19 | 武汉东晟捷能科技有限公司 | Method for continuously producing formic acid |
| CN112851491A (en) * | 2021-01-20 | 2021-05-28 | 武威合才化工有限责任公司 | Method for producing high-purity formic acid by acidifying sodium formate with sulfuric acid |
| CN113213442A (en) * | 2021-04-28 | 2021-08-06 | 贵州福泉川东化工有限公司 | Mineralization-integrated low-residual low-emission phosphorus deep processing equipment and using method thereof |
-
2006
- 2006-09-07 CN CN 200610124470 patent/CN1915954A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009026773A1 (en) * | 2007-08-24 | 2009-03-05 | Yibin Tianyuan Group Company Limited | Process for producing formic acid by acidifying sodium formate with acidifying agent |
| WO2009026774A1 (en) * | 2007-08-24 | 2009-03-05 | Yibin Tianyuan Group Company Limited | The process of producing formic acid with phosphoric acid extracted and sodium formate |
| CN100540520C (en) * | 2007-08-24 | 2009-09-16 | 宜宾天原集团股份有限公司 | The method for preparing formic acid with phosphoric acid extraction and sodium formiate |
| CN101665423B (en) * | 2009-08-11 | 2012-11-21 | 绵阳启明星磷化工有限公司 | Method for preparing methanoic acid by potassium formate acidized by phosphoric acid |
| CN102320949A (en) * | 2011-06-15 | 2012-01-18 | 浙江大学 | Multistage acidification reaction device for formic acid continuous production |
| CN102320949B (en) * | 2011-06-15 | 2013-07-31 | 浙江大学 | Multistage acidification reaction device for formic acid continuous production |
| CN104016320A (en) * | 2013-02-28 | 2014-09-03 | 黄冈师范学院 | Environmental-friendly process for concentrating diluted formic acid in hot-method phosphoric acid production process |
| CN104016320B (en) * | 2013-02-28 | 2015-12-23 | 黄冈师范学院 | The environment-protective process of concentrated dilute formic acid in phosphorous acid production by BEP process |
| CN105503576A (en) * | 2014-10-29 | 2016-04-20 | 张湉 | Preparation method for formic acid |
| CN104788304A (en) * | 2015-03-26 | 2015-07-22 | 重庆川东化工（集团）有限公司 | Method for preparing high-purity anhydrous formic acid from inorganic acid acidification formate |
| CN111302927A (en) * | 2020-02-14 | 2020-06-19 | 武汉东晟捷能科技有限公司 | Method for continuously producing formic acid |
| CN111302927B (en) * | 2020-02-14 | 2022-12-30 | 武汉东晟捷能科技有限公司 | Method for continuously producing formic acid |
| CN112851491A (en) * | 2021-01-20 | 2021-05-28 | 武威合才化工有限责任公司 | Method for producing high-purity formic acid by acidifying sodium formate with sulfuric acid |
| CN113213442A (en) * | 2021-04-28 | 2021-08-06 | 贵州福泉川东化工有限公司 | Mineralization-integrated low-residual low-emission phosphorus deep processing equipment and using method thereof |
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