CN2926228Y - Sulfuric feeder in methane-acid production - Google Patents
Sulfuric feeder in methane-acid production Download PDFInfo
- Publication number
- CN2926228Y CN2926228Y CN 200620051284 CN200620051284U CN2926228Y CN 2926228 Y CN2926228 Y CN 2926228Y CN 200620051284 CN200620051284 CN 200620051284 CN 200620051284 U CN200620051284 U CN 200620051284U CN 2926228 Y CN2926228 Y CN 2926228Y
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- CN
- China
- Prior art keywords
- formic acid
- sulfuric acid
- utility
- model
- semicircular coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A sulfuric acid loading equipment in the formic acid production comprises a semicircular coil 1, a feeding tube 2 and three charging tubes 3. The feeding tube 2 and the three charging tubes 3 all communicate with the semicircular coil 1; the caliber Phi of the semicircular coil is twenty five to fifty seven millimeters; and the arc diameter of the semicircular coil is one third to four fifth of the arc diameter of a reaction kettle 4. The caliber of the charging tube 3 is two to four millimeters. When being applied, the utility model is positioned on the other side of the sodium formate feed opening 5 arranged on the reaction kettle 4. Due to the adoption of the above design, the utility model gets over the difficulty existing in the prior art of catalytic decomposition of formic acid when the sulfuric acid feed in is in excessively high temperature; compared with prior art, the utility model has the advantages of simple structure and easy installation, etc.; basically no extra operation is needed; the equipment disperses the sulfuric acid well; and the recovery rate of the formic acid can be upgraded to ninety four to ninety five percent.
Description
Technical field
Gu the utility model relates to the liquid feeding device of liquid-reaction in a kind of chemical process, sulfuric acid feeding device during particularly a kind of formic acid is produced, it can be useful in and add the vitriolic device when being used for sodium formiate and sulfuric acid reaction in the formic acid production, adds the vitriolic device when also being suitable for other reaction.
Background technology
The reaction of existing sodium formiate and vitriolic is: with dilute formic acid or the bed material of going up batch reaction sodium formiate is made suspension, again sulfuric acid is directly added reactor with 50～150kg/ hour speed.Because a large amount of sulfuric acid moments and sodium formiate reaction cause the temperature that adds the vitriolic central point up to more than 100 ℃.As everyone knows, under the condition that has the vitriol oil to exist, formic acid is becoming carbon monoxide and water with regard to catalytic decomposition more than 55 ℃, the utilization ratio of sodium formiate is lower like this, the yield of formic acid is the highest to have only 92.5%, and the yield of general producer is 85%～90%, and this has increased the cost of formic acid greatly.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and a kind of formic acid sulfuric acid feeding device in producing is provided, and it can make sulfuric acid be added to the multiple-point form in the suspension of sodium formiate, to avoid local superheating, significantly reduces the catalytic decomposition of formic acid.
The technical solution of the utility model is: the sulfuric acid feeding device during a kind of formic acid is produced, and it comprises semicircle coil pipe, feed-pipe and at least three filling tubes, feed-pipe and filling tube all are communicated with semicircle coil pipe.
The further technical scheme of the utility model is: the caliber Φ 25～57mm of semicircle coil pipe, its arc diameter are 1/3～4/5 of reactor 4 diameters.
The utility model further technical scheme is: the aperture of filling tube is 2～4mm.
To add the temperature of point too high and cause the difficult problem of formic acid catalytic decomposition if the utility model owing to adopt to go up design, has overcome sulfuric acid that prior art exists, compared with prior art, has following advantage:
1. simple in structure, easy for installation, do not increase extra operation basically;
2. this device is good to the vitriolic dispersion effect, and the yield of formic acid can bring up to 94%～95%.
Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the vertical view of accompanying drawing 1.
Embodiment
As shown in drawings: the sulfuric acid feeding device during a kind of formic acid is produced, it comprises semicircle coil pipe 1, feed-pipe 2 and three filling tubes 3, feed-pipe 2 and three filling tubes 3 all are communicated with semicircle coil pipe 1, the caliber Φ 25～57mm of semicircle coil pipe 1, its arc diameter is 1/3～4/5 of reactor 4 diameters.The aperture of filling tube 3 is 2～4mm.
During use, the utility model is installed in the other side (as shown in Figure 2) of sodium formiate charge cavity 5 on the reactor 4.During reaction, the dilute formic acid of 800kg75%～80% or the bed material of going up batch reaction joined by three filling tubes 3 of the present utility model in 3000 liters the reactor, the sulfuric acid that adds sodium formiate and 98% while stirring added sodium formiate 1100～1250kg in 6 hours, add 750～850kg sulfuric acid.About 95% (in the sodium formiate) of the yield of formic acid, yield increases by 3%.
Claims (3)
1, the sulfuric acid feeding device during a kind of formic acid is produced is characterized in that it comprises semicircle coil pipe, feed-pipe and at least three filling tubes, and feed-pipe and filling tube all are communicated with semicircle coil pipe.
2, the sulfuric acid feeding device during formic acid according to claim 1 is produced is characterized in that the caliber Ф 25～57mm of semicircle coil pipe, and its arc diameter is 1/3～4/5 of reactor 4 diameters.
3, the sulfuric acid feeding device during formic acid according to claim 1 and 2 is produced, the aperture that it is characterized in that filling tube is 2～4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620051284 CN2926228Y (en) | 2006-06-12 | 2006-06-12 | Sulfuric feeder in methane-acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620051284 CN2926228Y (en) | 2006-06-12 | 2006-06-12 | Sulfuric feeder in methane-acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2926228Y true CN2926228Y (en) | 2007-07-25 |
Family
ID=38280469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620051284 Expired - Fee Related CN2926228Y (en) | 2006-06-12 | 2006-06-12 | Sulfuric feeder in methane-acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2926228Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355985A (en) * | 2014-11-25 | 2015-02-18 | 云南省化工研究院 | Method of preparing formic acid by acidifying sodium formate with sodium hydrogen sulfate |
-
2006
- 2006-06-12 CN CN 200620051284 patent/CN2926228Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355985A (en) * | 2014-11-25 | 2015-02-18 | 云南省化工研究院 | Method of preparing formic acid by acidifying sodium formate with sodium hydrogen sulfate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |