CN214881195U - High-purity formic acid production and storage device - Google Patents
High-purity formic acid production and storage device Download PDFInfo
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- CN214881195U CN214881195U CN202120894360.6U CN202120894360U CN214881195U CN 214881195 U CN214881195 U CN 214881195U CN 202120894360 U CN202120894360 U CN 202120894360U CN 214881195 U CN214881195 U CN 214881195U
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Abstract
The utility model discloses a high-purity formic acid production and storage device, which is sequentially provided with an enamel reaction kettle, a distillation purification device, a condensing device, a filtering device, a desulfurization device and a nitrogen sealing storage device according to the process sequence from production to storage; a gas discharge port of the enamel reaction kettle is connected to a first bubble column, and the gas is absorbed by the first bubble column and then returns to the enamel reaction kettle for treatment; the lower end of the condensing device is connected with a condensed product outflow pipeline, the condensed product outflow pipeline is connected with a filtering device, the upper end of the condensing device is connected with a mixed gas outlet pipe, the mixed gas outlet pipe is introduced into a second bubble tower for absorption treatment, and then is connected into the condensed product outflow pipeline, and escaped miscellaneous gas which is not absorbed in the second bubble tower is emptied through an alkaline washing tank; the nitrogen airtight storage device is of an airtight structure. The utility model can prepare high-purity formic acid, can be stored for a long time, and has less emission and little pollution.
Description
Technical Field
The utility model relates to a phosphorus chemical industry technical field especially relates to a high-purity formic acid production and storage facilities.
Background
Formic acid is one of basic organic chemical raw materials, and is widely used in the industries of pesticides, leather, dyes, medicines, rubber and the like. The formic acid can be directly used for fabric processing, tanning, textile printing and dyeing and storage of green feed, and can also be used as a metal surface treating agent, a rubber auxiliary agent and an industrial solvent. Is used for synthesizing various formate, acridine dyes and formamide series medical intermediates in organic synthesis.
However, the industrially prepared formic acid in the prior art has the following problems:
1. the process is rough and the purity is not high;
2. the storage is random, the deterioration is easy, and the stability is poor;
3. the production process is extensive, the amount of discharged gas is large, and the air pollution is large.
Therefore, a production and storage device for preparing high-purity formic acid, which can be stored for a long time, has less emission and less pollution, is urgently needed in the market.
Disclosure of Invention
The utility model aims to provide a high-purity formic acid production and storage device which can prepare high-purity formic acid, can store for a long time, has less emission and little pollution.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-purity formic acid production and storage device is sequentially provided with an enamel reaction kettle, a distillation purification device, a condensing device, a filtering device, a desulfurization device and a nitrogen sealing storage device according to the process sequence from production to storage;
a sodium formate inlet and a phosphoric acid inlet are arranged at a feeding port above the enamel reaction kettle, a gas discharge port is arranged at the side face of the upper part of the enamel reaction kettle, the gas discharge port is connected into a first bubble tower filled with water, and after absorption treatment of the first bubble tower, the water solution meeting the requirement returns to the enamel reaction kettle through the connected phosphoric acid inlet for treatment;
the lower end of the condensing device is connected with a condensed product outflow pipeline, the condensed product outflow pipeline is connected with a filtering device, the upper end of the condensing device is connected with a mixed gas outlet pipe, the mixed gas outlet pipe is introduced into a second bubble tower filled with water for absorption treatment, a water solution meeting the requirement is connected into the condensed product outflow pipeline, and escaped miscellaneous gas which is not absorbed in the second bubble tower is emptied through an alkaline washing tank;
the nitrogen gas sealed storage device is of a sealed structure, and a joint of the nitrogen gas sealed storage device and the discharge end of the desulfurization device adopts a sealed interface with synchronous inlet and outlet, namely the volume of an inlet is equal to that of an outlet, and no inlet is sealed, namely no outlet is discharged.
Compared with the prior art, the utility model has the advantages of it is following: (1) the utility model discloses the formic acid purity that the original product process, distillation, purification, condensation, filtration, removal etc. obtained after six purification, purification technology is very high, especially impurity such as phosphorus, sulphur compare in prior art very few. (2) The utility model discloses an atmosphere is all not directly discharged to the discharge among the process units operation, but through washing recovery and recycle many times, wherein the first time result is retrieved and is recycled the sour back enamel reation kettle reprocessing of returning of sour conduct condiment among the absorbed gas, the second time result is retrieved and is utilized through the gas of not being handled after the condensation and having tentatively purified, still this process of butt joint after absorbing moreover, all steps of absorbing recycling all are all at this flow inner loop promptly, do not directly get into next flow, guaranteed like this the utility model discloses the purity of output also has obvious improvement to the utilization ratio of resource simultaneously. (3) The utility model discloses an emission is through absorbing the recycle many times, again through washing with alkaline the degasification during the discharge, and the gas volume that discharges in the atmosphere is few and pollute for a short time. (4) The storage device adopts a synchronous sealing interface, namely the volume of the inlet is equal to that of the outlet, the inlet is closed without being discharged, and the equal volume of nitrogen is always protected in the storage device, so that the purity of the stored formic acid can be effectively guaranteed. Therefore, the utility model has the characteristics of preparing high-purity formic acid, long-term storage, less emission and little pollution.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: the device comprises an enamel reaction kettle 1, a first bubble column 2, a distillation purification device 3, a filtering device 4, a condensing device 5, a second bubble column 6, an alkaline washing tank 7, a nitrogen sealed storage device 8 and a desulfurization device 9.
Detailed Description
Example 1:
the production and storage equipment for high-purity formic acid shown in figure 1 is sequentially provided with an enamel reaction kettle 1, a distillation purification device 3, a condensing device 5, a filtering device 4, a desulfurization device 9 and a nitrogen sealing storage device 8 according to the process sequence from production to storage;
a sodium formate inlet and a phosphoric acid inlet are arranged at a feeding port above the enamel reaction kettle 1, a gas discharge port is arranged at the side surface of the upper part of the enamel reaction kettle, the gas discharge port is connected into a first bubble cap tower 2 filled with water, and after absorption treatment of the first bubble cap tower 2, the water solution meeting the requirement returns to the enamel reaction kettle 1 through the connection of the phosphoric acid inlet for treatment;
the lower end of a condensing device 5 is connected with a condensed product outflow pipeline, the condensed product outflow pipeline is connected with a filtering device 4, the upper end of the condensing device 5 is connected with a mixed gas outlet pipe, the mixed gas outlet pipe is introduced into a second bubble tower 6 filled with water for absorption treatment, the aqueous solution meeting the requirement is connected into the condensed product outflow pipeline, and the escaped foreign gas which is not absorbed in the second bubble tower 6 is emptied through an alkaline washing tank 7;
the nitrogen gas sealed storage device 8 is of a closed structure, and the connection part of the nitrogen gas sealed storage device and the discharge end of the desulfurization device 9 adopts a sealed interface with synchronous inlet and outlet, namely the volume of the inlet is equal to that of the discharge, and no inlet is sealed, namely no discharge is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A high-purity formic acid production and storage equipment is characterized in that: the high-purity formic acid production and storage equipment is sequentially provided with an enamel reaction kettle (1), a distillation purification device (3), a condensing device (5), a filtering device (4), a desulfurization device (9) and a nitrogen sealing storage device (8) according to the process sequence from production to storage;
a sodium formate inlet and a phosphoric acid inlet are arranged at a feeding port above the enamel reaction kettle (1), a gas discharge port is arranged at the side surface of the upper part of the enamel reaction kettle, the gas discharge port is connected into a first bubble cap tower (2) filled with water, and after absorption treatment of the first bubble cap tower (2), a water solution meeting the requirement returns to the enamel reaction kettle (1) through the connected phosphoric acid inlet for treatment;
the lower end of the condensing device (5) is connected with a condensed product outflow pipeline, the condensed product outflow pipeline is connected with the filtering device (4), the upper end of the condensing device (5) is connected with a mixed gas outlet pipe, the mixed gas outlet pipe is introduced into a second bubble tower (6) filled with water for absorption treatment, a water solution meeting the requirement is connected into the condensed product outflow pipeline, and escaped miscellaneous gas which is not absorbed in the second bubble tower (6) is emptied through an alkaline washing tank (7);
the nitrogen sealed storage device (8) is of a sealed structure, and a joint of the nitrogen sealed storage device and the discharge end of the desulfurization device (9) adopts a sealed interface with synchronous inlet and outlet, namely the volume of the inlet is equal to that of the discharge, and no inlet is sealed, namely no discharge is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120894360.6U CN214881195U (en) | 2021-04-28 | 2021-04-28 | High-purity formic acid production and storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120894360.6U CN214881195U (en) | 2021-04-28 | 2021-04-28 | High-purity formic acid production and storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214881195U true CN214881195U (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120894360.6U Active CN214881195U (en) | 2021-04-28 | 2021-04-28 | High-purity formic acid production and storage device |
Country Status (1)
| Country | Link |
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| CN (1) | CN214881195U (en) |
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2021
- 2021-04-28 CN CN202120894360.6U patent/CN214881195U/en active Active
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