CN215693118U - Process unit for producing urea formaldehyde pre-shrinking liquid by silver method formaldehyde - Google Patents
Process unit for producing urea formaldehyde pre-shrinking liquid by silver method formaldehyde Download PDFInfo
- Publication number
- CN215693118U CN215693118U CN202122026943.XU CN202122026943U CN215693118U CN 215693118 U CN215693118 U CN 215693118U CN 202122026943 U CN202122026943 U CN 202122026943U CN 215693118 U CN215693118 U CN 215693118U
- Authority
- CN
- China
- Prior art keywords
- reactor
- pipe
- methanol
- formaldehyde
- air
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a process device for producing urea formaldehyde pre-shrinking liquid by silver formaldehyde, which comprises a methanol evaporation tower, wherein a methanol feeding pipe is inserted into the top of the methanol evaporation tower, an installation plate is sleeved on the circumferential outer wall of the methanol evaporation tower, an air fan is fixedly connected to the top of the installation plate, an air inlet pipe is inserted into the air outlet end of the air fan, the other end of the air inlet pipe is communicated with the methanol evaporation tower, a first feeding pipe is inserted into one side of the methanol evaporation tower, a reactor is sleeved at the other end of the first feeding pipe, a quenching bin is arranged at the bottom of the reactor and is communicated with the reactor, a reactor jacket is sleeved on the circumferential outer wall of the reactor, and a second feeding pipe is inserted into one side of the reactor. The utility model can obtain the formaldehyde and the urea formaldehyde pre-condensed liquid by matching the methanol evaporation tower, the reactor, the quenching bin and the absorption tower, and the method for producing the urea formaldehyde pre-condensed liquid has the advantages of low raw material consumption, low investment, environmental protection and energy saving.
Description
Technical Field
The utility model relates to the technical field of process devices, in particular to a process device for producing urea formaldehyde pre-condensate by using formaldehyde in a silver method.
Background
In the chemical industry field, the traditional silver method formaldehyde production process adopts air, methanol and water vapor to form ternary gas, the ternary gas is converted into formaldehyde gas under the catalysis of electrolytic silver at high temperature, the formaldehyde gas enters an absorption tower to be absorbed in sequence after being subjected to primary cooling by a cooling section, and finally urea formaldehyde pre-shrinking liquid is obtained.
At present, most of the existing process devices for producing the urea formaldehyde precondensate have the following defects: the raw material consumption is high, and the feature of environmental protection is poor, and the investment is relatively higher, is unfavorable for urea-formaldehyde pre-shrinking liquid production effect, to sum up, the process units of current production urea-formaldehyde pre-shrinking liquid still can not agree with actual need well mostly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a process device for producing urea formaldehyde pre-condensate by using silver formaldehyde.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a process unit for producing urea formaldehyde precondensate liquid by silver formaldehyde comprises a methanol evaporation tower, wherein a methanol feeding pipe is inserted into the top of the methanol evaporation tower, a mounting plate is sleeved on the circumferential outer wall of the methanol evaporation tower, an air fan is fixedly connected to the top of the mounting plate, an air inlet pipe is inserted into the air outlet end of the air fan, the other end of the air inlet pipe is communicated with the methanol evaporation tower, a first conveying pipe is inserted into one side of the methanol evaporation tower, a reactor is sleeved on the other end of the first conveying pipe, a quench bin is arranged at the bottom of the reactor and is communicated with the reactor, a reactor jacket is sleeved on the circumferential outer wall of the reactor, a second conveying pipe is inserted into one side of the reactor, an absorption tower is sleeved on the other end of the second conveying pipe, a first alkali liquor feeding port is arranged at the top of the absorption tower, a second alkali liquor feeding port and a urea feeding port are arranged on one side of the absorption tower, the bottom of absorption tower circumference outer wall is pegged graft and is had the discharging pipe, the both sides of absorption tower are all pegged graft and are had the tail gas delivery pipe, and one of them tail gas delivery pipe's the other end is equipped with the tail gas treater, the bottom fixedly connected with tail gas fan of mounting panel, the air inlet end of tail gas fan and another tail gas delivery pipe's the other end intercommunication, the air-out end and the methyl alcohol evaporation tower intercommunication of tail gas fan.
Furthermore, a steam conveying pipe is inserted into the top of the reactor, and the other end of the steam conveying pipe is communicated with the methanol evaporation tower.
Furthermore, one side of the steam conveying pipe is provided with a steam control valve.
Furthermore, one side of the first conveying pipeline is provided with a flame arrester and a first valve.
Furthermore, one side of the second conveying pipeline is provided with a second valve.
Furthermore, an air filter is arranged at the air inlet end of the air fan.
Furthermore, the other end of the methanol feeding pipe is provided with a methanol filter.
The utility model has the beneficial effects that:
1. the utility model can obtain the formaldehyde and the urea formaldehyde pre-condensed liquid by matching the methanol evaporation tower, the reactor, the quenching bin and the absorption tower, and the method for producing the urea formaldehyde pre-condensed liquid has the advantages of low raw material consumption, low investment, environmental protection and energy saving.
2. According to the utility model, the steam generated in the reaction of the absorption tower is conveyed into the methanol evaporation tower from the steam conveying pipe for use, part of tail gas is conveyed into the methanol evaporation tower, and the tail gas is recycled into the system to participate in the reaction, so that the resource can be recycled, and the utilization rate of the resource is improved.
3. According to the utility model, the methanol raw material and the air can be filtered through the arrangement of the methanol filter and the air filter, so that the purity of the methanol and the air is improved, and the quality of the urea formaldehyde pre-condensed liquid is improved.
Drawings
FIG. 1 is a schematic perspective view of a process apparatus for producing urea formaldehyde precondensate from silver formaldehyde according to the present invention;
FIG. 2 is a schematic diagram of a rear view structure of a process unit for producing urea formaldehyde precondensate by silver formaldehyde according to the present invention;
FIG. 3 is a schematic diagram of a top view of a process apparatus for producing urea formaldehyde precondensate from silver formaldehyde according to the present invention;
FIG. 4 is a schematic view of a process flow structure of a process device for producing urea formaldehyde precondensate by silver formaldehyde according to the present invention.
In the figure: 1. a methanol evaporation tower; 2. a methanol feeding pipe; 3. a methanol filter; 4. mounting a plate; 5. an air blower; 6. an air filter; 7. an air inlet pipe; 8. a first feed delivery pipe; 9. a reactor; 10. a flame arrestor; 11. a quenching bin; 12. a reactor jacket; 13. a second delivery pipe; 14. an absorption tower; 15. a first alkali liquor feeding port; 16. a second lye feed inlet; 17. a urea feed port; 18. a discharge pipe; 19. a first valve; 20. a second valve; 21. a tail gas discharge pipe; 22. a tail gas processor; 23. a tail gas fan; 24. a steam delivery pipe; 25. and a steam control valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a process unit for producing urea formaldehyde pre-shrinking liquid by silver formaldehyde, comprising a methanol evaporation tower 1, a methanol inlet pipe 2 is inserted into the top of the methanol evaporation tower 1, methanol enters the methanol evaporation tower 1 from the methanol inlet pipe 2, a mounting plate 4 is sleeved on the circumferential outer wall of the methanol evaporation tower 1, an air fan 5 is fixed on the top of the mounting plate 4 through a bolt, an air inlet pipe 7 is inserted into the air outlet end of the air fan 5, the other end of the air inlet pipe 7 is communicated with the methanol evaporation tower 1, air enters the methanol evaporation tower 1 under the action of the air fan 5, methanol and air are mixed in the methanol evaporation tower 1, a first feed pipe 8 is inserted into one side of the methanol evaporation tower 1, the other end of the first feed pipe 8 is sleeved with a reactor 9, a quenching chamber 11 is arranged at the bottom of the reactor 9, the quenching chamber 11 is communicated with the reactor 9, a reactor jacket 12 is sleeved on the circumferential outer wall of the reactor 9, a mixed gas of methanol and air is input into the reactor 9 from a first feed pipe 8, in the reactor 9, the mixed gas of methanol and air is subjected to oxidative dehydrogenation reaction under the action of a silver catalyst to generate formaldehyde, the formaldehyde is cooled through a quenching bin 11, a second feed pipe 13 is inserted into one side of the reactor 9, an absorption tower 14 is sleeved at the other end of the second feed pipe 13, a first alkali liquor feed port 15 is arranged at the top of the absorption tower 14, the formaldehyde is conveyed into the absorption tower 14 from the second feed pipe 13, process water is added into the absorption tower 14 from a first alkali liquor feed port 15, the temperature of the mixed gas is reduced through circulating water heat exchange, the formaldehyde gas is liquefied and absorbed, a second alkali liquor feed port 16 and a urea feed port 17 are arranged at one side of the absorption tower 14, urea and alkali liquor are respectively added into the urea feed port 17 and the second alkali liquor feed port 16 of the absorption tower 14, urea and formaldehyde solution react in absorption tower 14, obtain urea-formaldehyde preshrinking liquid, it has discharging pipe 18 to peg graft in the bottom of the 14 circumference outer walls of absorption tower, tail gas discharge pipe 21 has all been pegged graft to the both sides of absorption tower 14, the other end of one of them tail gas discharge pipe 21 is equipped with tail gas treater 22, the bottom of mounting panel 4 is fixed with tail gas fan 23 through the bolt, the air inlet end of tail gas fan 23 communicates with the other end of another tail gas discharge pipe 21, the air-out end and the methanol evaporation tower 1 intercommunication of tail gas fan 23, tail gas is discharged by tail gas discharge pipe 21, partly get into and handle in tail gas treater 22, discharge up to standard after handling, another part tail gas is carried into methanol evaporation tower 1 in, the recycle gets into the system and participates in the reaction.
A steam delivery pipe 24 is inserted into the top of the reactor 9, the other end of the steam delivery pipe 24 is communicated with the methanol evaporation tower 1, one side of the steam delivery pipe 24 is provided with a steam control valve 25, the steam control valve 25 is opened, steam during reaction is delivered into the methanol evaporation tower 1 from the steam delivery pipe 24 for use, one side of the first delivery pipe 8 is provided with a flame arrester 10 and a first valve 19, the first valve 19 controls the first delivery pipe 8 to be opened and closed, one side of the second delivery pipe 13 is provided with a second valve 20, the second valve 20 controls the second delivery pipe 13 to be opened and closed, the air inlet end of the air fan 5 is provided with an air filter 6, the air filter 6 filters impurities in the air, the other end of the methanol feed pipe 2 is provided with a methanol filter 3, and the methanol filter 3 filters impurities in the methanol.
The working principle is as follows: when in use, firstly, methanol is filtered by a methanol filter 3 and then enters a methanol evaporation tower 1 from a methanol feeding pipe 2, then, air is filtered by an air filter 6 under the action of an air fan 5, the filtered liquid enters the methanol evaporation tower 1, the methanol and the air are mixed in the methanol evaporation tower 1, then, a first valve 19 is opened, the gas mixed with the methanol and the air is input into a reactor 9 from a first material conveying pipe 8, in the reactor 9, the mixed gas of the methanol and the air is subjected to oxidative dehydrogenation reaction under the action of a silver catalyst to generate formaldehyde, then, the formaldehyde is cooled through a quenching bin 11, then, a second valve 20 is opened and is conveyed into an absorption tower 14 from a second material conveying pipe 13, meanwhile, a steam control valve 25 is opened, steam during the reaction is conveyed into the methanol evaporation tower 1 from a steam conveying pipe 24 for use, then, process water is added into the absorption tower 14 from a first alkali liquor feeding hole 15, the temperature of the mixed gas is reduced through heat exchange of circulating water, the mixed gas is liquefied and absorbs formaldehyde gas, then urea and alkali liquor are respectively added into a urea feeding port 17 and a second alkali liquor feeding port 16 of an absorption tower 14, the urea and the formaldehyde solution react in the absorption tower 14 to obtain urea-formaldehyde pre-shrinking liquid, the urea-formaldehyde pre-shrinking liquid is led out from a discharging pipe 18, finally, tail gas is discharged from a tail gas discharging pipe 21, one part of the tail gas enters a tail gas processor 22 for processing, the processed tail gas is discharged after reaching the standard, the other part of the tail gas is conveyed into a methanol evaporation tower 1 and is recycled into a system to participate in the reaction.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
Claims (7)
1. A process unit for producing urea formaldehyde precondensate liquid by silver formaldehyde comprises a methanol evaporation tower (1) and is characterized in that a methanol feeding pipe (2) is inserted into the top of the methanol evaporation tower (1), a mounting plate (4) is sleeved on the outer wall of the circumference of the methanol evaporation tower (1), an air fan (5) is fixedly connected to the top of the mounting plate (4), an air inlet pipe (7) is inserted into the air outlet end of the air fan (5), the other end of the air inlet pipe (7) is communicated with the methanol evaporation tower (1), a first material conveying pipe (8) is inserted into one side of the methanol evaporation tower (1), the other end of the first material conveying pipe (8) is sleeved with a reactor (9), a quench bin (11) is arranged at the bottom of the reactor (9), the quench bin (11) is communicated with the reactor (9), a reactor jacket (12) is sleeved on the outer wall of the circumference of the reactor (9), one side of reactor (9) is pegged graft and is had second conveying pipeline (13), and absorption tower (14) have been cup jointed to the other end of second conveying pipeline (13), and the top of absorption tower (14) is equipped with first alkali lye feed inlet (15), and one side of absorption tower (14) is equipped with second alkali lye feed inlet (16) and urea feed inlet (17), and the bottom of absorption tower (14) circumference outer wall is pegged graft and is had discharging pipe (18), tail gas discharge pipe (21) have all been pegged graft to the both sides of absorption tower (14), and the other end of one of them tail gas discharge pipe (21) is equipped with tail gas treater (22), the bottom fixedly connected with tail gas fan (23) of mounting panel (4), the air inlet end of tail gas fan (23) and the other end intercommunication of another tail gas discharge pipe (21), the air-out end and the methanol evaporation tower (1) intercommunication of tail gas fan (23).
2. The process unit for producing the urea formaldehyde precondensate by the silver formaldehyde method according to claim 1, wherein a steam delivery pipe (24) is inserted into the top of the reactor (9), and the other end of the steam delivery pipe (24) is communicated with the methanol evaporation tower (1).
3. The process unit for producing the urea formaldehyde precondensate by the silver method formaldehyde as claimed in claim 2, wherein a steam control valve (25) is arranged on one side of the steam delivery pipe (24).
4. The apparatus for producing urea formaldehyde precondensate solution by silver formaldehyde according to claim 1, wherein a flame arrester (10) and a first valve (19) are arranged on one side of the first delivery pipe (8).
5. The apparatus for producing urea formaldehyde precondensate solution by silver formaldehyde according to claim 1, wherein a second valve (20) is provided at one side of the second feed pipe (13).
6. The process unit for producing the urea formaldehyde precondensate by the silver method formaldehyde as claimed in claim 1, wherein an air filter (6) is arranged at the air inlet end of the air blower (5).
7. The process unit for producing the urea formaldehyde precondensate by the silver method formaldehyde as claimed in claim 1, wherein the other end of the methanol feeding pipe (2) is provided with a methanol filter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122026943.XU CN215693118U (en) | 2021-08-26 | 2021-08-26 | Process unit for producing urea formaldehyde pre-shrinking liquid by silver method formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122026943.XU CN215693118U (en) | 2021-08-26 | 2021-08-26 | Process unit for producing urea formaldehyde pre-shrinking liquid by silver method formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215693118U true CN215693118U (en) | 2022-02-01 |
Family
ID=80007472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122026943.XU Active CN215693118U (en) | 2021-08-26 | 2021-08-26 | Process unit for producing urea formaldehyde pre-shrinking liquid by silver method formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215693118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689817A (en) * | 2018-08-01 | 2018-10-23 | 江苏道尔顿石化科技有限公司 | A kind of device and method of iron molybdenum method production formaldehyde coproduction UFC |
-
2021
- 2021-08-26 CN CN202122026943.XU patent/CN215693118U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689817A (en) * | 2018-08-01 | 2018-10-23 | 江苏道尔顿石化科技有限公司 | A kind of device and method of iron molybdenum method production formaldehyde coproduction UFC |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215693118U (en) | Process unit for producing urea formaldehyde pre-shrinking liquid by silver method formaldehyde | |
| CN108275727A (en) | A kind of spent acid treatment process and equipment | |
| CN206660898U (en) | One kind improves hydrogen chloride as by product of chlorinated paraffin production absorptivity and purifier | |
| CN110343035B (en) | Method for preparing natural benzaldehyde by spraying continuous hydrolysis | |
| CN215232208U (en) | Energy-saving efficient methanol recovery rectifying tower | |
| CN206033270U (en) | Solid poly aluminium chloride apparatus for producing | |
| CN214141608U (en) | Remove ammonia system and ammonia product preparation equipment | |
| CN212102006U (en) | Ammonia supply system for preparing sodium carbonate | |
| CN110575744B (en) | Special fabric ammonia-containing waste gas circulating purification and recovery process | |
| CN210496445U (en) | Tower reactor for synthesizing glyoxylic acid | |
| CN210595859U (en) | A purification device for m-toluic acid production | |
| CN211204891U (en) | Vanadium-nitrogen alloy kiln with improved air inlet structure | |
| TWI636015B (en) | Device for producing metal compound by ammonia method and production process thereof | |
| CN220229839U (en) | Energy-saving and environment-friendly vinasse drying system | |
| CN217725135U (en) | Pretreatment system of chlorobenzene tail gas | |
| CN111099639A (en) | Ammonia supply system and method for preparing sodium carbonate | |
| CN220531210U (en) | Tail gas filtering device for chemical vapor deposition furnace | |
| CN216367922U (en) | Sodium chlorite production is with concentrated reation kettle product recovery system | |
| CN216273582U (en) | Dual cyanogen device that breaks of acrylonitrile waste water | |
| CN211521609U (en) | System for prepare ammonium chloride | |
| CN216366697U (en) | Sodium chlorite material recovery system | |
| CN221122249U (en) | Hydrocyanic acid production tail gas treatment device | |
| CN211536562U (en) | Calcium chloride concentration and evaporation system | |
| CN217961975U (en) | Nitrogen trifluoride electrolysis trough positive pole tail gas recovery processing device | |
| CN216631816U (en) | Heterogeneous raw material alkaline substance cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |