CN103848721A - Aldehyde removal apparatus of pentaerythritol - Google Patents
Aldehyde removal apparatus of pentaerythritol Download PDFInfo
- Publication number
- CN103848721A CN103848721A CN201210502999.0A CN201210502999A CN103848721A CN 103848721 A CN103848721 A CN 103848721A CN 201210502999 A CN201210502999 A CN 201210502999A CN 103848721 A CN103848721 A CN 103848721A
- Authority
- CN
- China
- Prior art keywords
- tower
- flashing
- reaction solution
- heat exchanger
- type heat
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/06—Flash distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
-
- 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
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides an aldehyde removal apparatus of pentaerythritol. A flash evaporation system is additionally installed in front of an aldehyde removal tower, preliminary heating and preliminary aldehyde removal of a pentaerythritol reaction solution are carried out through the flash evaporation system to remove parts of formaldehyde in the pentaerythritol reaction solution, and heat provided for the flash evaporation system is from a gas phase outlet at the top of the aldehyde removal tower to save energy, and the pentaerythritol reaction solution subjected to the removal of parts of formaldehyde through the flash evaporation system enters the aldehyde removal tower for secondary aldehyde removal. The apparatus can realize compete removal of formaldehyde in the pentaerythritol reaction solution and a low steam consumption effect, and has a production cost reduction effect.
Description
Technical field
The present invention relates to chemical production equipment field, be specifically related to a kind of tetramethylolmethane full gear device.
Background technology
Under the condition existing at liquid caustic soda (sodium hydroxide/calcium hydroxide), temperature of reaction is 40～50 ℃, formaldehyde, acetaldehyde, formic acid react and generate tetramethylolmethane reaction solution in condensation kettle, tetramethylolmethane reaction solution is containing a large amount of unreacteds formaldehyde completely, need to carry out recycle and reuse, when unreacted in tetramethylolmethane reaction solution is completely after methanal removing, just can carry out follow-up evaporation and concentrating and Crystallizing process, obtain tetramethylolmethane and sodium formiate/calcium formiate product that purity is higher.Traditional method is to adopt simple dealdehyder tower to carry out full gear to tetramethylolmethane reaction solution, if need a large amount of steam owing to formaldehyde being removed completely in rectifying removing aldehyde process, and dealdehyder tower produces gas and recirculated water carries out heat exchange, the heat of gas is recycled water and takes away, waste the energy, increased the energy consumption of product.
Summary of the invention
Object of the present invention provides a kind of tetramethylolmethane full gear device, can before tetramethylolmethane reaction solution enters dealdehyder tower, first carry out preliminary heating and pre-full gear to reaction solution, makes full gear more thorough, and can save energy consumption.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of tetramethylolmethane full gear device, hay tank is connected with the flash condenser phlegma feed-pipe of flash condenser, flash condenser phlegma discharge port is connected to the plate-type heat exchanger phlegma opening for feed of plate-type heat exchanger, plate-type heat exchanger phlegma discharge port is connected to flashing tower opening for feed, the lower end of flashing tower is communicated with the upper end of flashing chamber, flashing chamber pneumatic outlet is connected with flash condenser condensation gas phase entrance, after flashing tower discharge port and flashing chamber discharge port converge to pipeline, is connected to dealdehyder tower.
The plate-type heat exchanger gas phase import of described plate-type heat exchanger and the flashing tower gas phase import of flashing tower are all connected with the gaseous phase outlet of dealdehyder tower.
Described pipeline is provided with pump, is also provided with arm on pipeline, and arm is connected to flashing tower opening for feed.
Tetramethylolmethane full gear device provided by the invention, by flash system, tetramethylolmethane reaction solution is carried out to preliminary heating and pre-full gear, formaldehyde in tetramethylolmethane reaction solution is sloughed to a part, and the heat providing for flash system comes from the gaseous phase outlet at dealdehyder tower top, save energy, slough tetramethylolmethane reaction solution after part formaldehyde by flash system and enter again dealdehyder tower and carry out secondary full gear, thereby reach the object that in tetramethylolmethane reaction solution, formaldehyde removes completely and steam consumption is low.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structure iron of the present invention.
Embodiment
As shown in Figure 1, hay tank 1 of the present invention is connected with the flash condenser phlegma feed-pipe 21 of flash condenser 2, flash condenser phlegma discharge port 22 is connected to the plate-type heat exchanger phlegma opening for feed 31 of plate-type heat exchanger 3, plate-type heat exchanger phlegma discharge port 32 is connected to flashing tower opening for feed 41, the lower end of flashing tower 4 is communicated with the upper end of flashing chamber 5, flashing chamber gaseous phase outlet 51 is connected with flash condenser condensed gas entrance 23, and flashing tower discharge port 42 is connected to dealdehyder tower after convergeing to pipeline 6 with flashing chamber discharge port 52.
The plate-type heat exchanger gas phase import of described plate-type heat exchanger 3 and the flashing tower gas phase import of flashing tower 4 are all connected with the gaseous phase outlet of dealdehyder tower.
When production run, sodium method tetramethylolmethane reaction solution first filters by hay tank, then enter flashing tower condenser 2 from flash condenser phlegma feed-pipe 21, with the gas converting heat in flashing tower condenser gas inlet 23, reaction solution heated laggard enter plate-type heat exchanger 3, with the gas converting heat from dealdehyder tower, after reaction solution is further heated, enter in flashing tower 4 and flashing chamber 5 and carry out flash distillation by flashing tower opening for feed 41, the heated gas phase that becomes of part formaldehyde in reaction solution, gaseous formaldehyde enters the reaction solution heat exchange in flashing tower condenser gas inlet 23 and flashing tower condenser 2 by flashing chamber gaseous phase outlet 51, gaseous formaldehyde is condensed into liquids recovery, reaction solution in flashing tower 4 and flashing chamber 5 converges to pipeline 6 from flashing tower discharge port 42, flashing chamber discharge port 52 respectively, is pressed into and in flashing tower, carries out full gear again or enter dealdehyder tower carrying out full gear again through pump 7.Carry out becoming liquid state after heat exchange at flashing chamber and plate-type heat exchanger 3 from the gas of dealdehyder tower in addition, can reclaim.
Because dealdehyder tower is by steam heating full gear, therefore, this device adopts increase flashing tower and condenser etc. to carry out pre-full gear to tetramethylolmethane reaction solution, can in the case of reducing, the steam add-on of dealdehyder tower realize complete full gear, and continuous and stable production, in the production equipment of 40 tons of tetramethylolmethanes of daily output, steam mono-consumption can decline 1 ton/ton.
Claims (3)
1. a tetramethylolmethane full gear device, it is characterized in that: hay tank (1) is connected with the flash condenser phlegma feed-pipe (21) of flash condenser (2), flash condenser phlegma discharge port (22) is connected to the plate-type heat exchanger phlegma opening for feed (31) of plate-type heat exchanger (3), plate-type heat exchanger phlegma discharge port (32) is connected to flashing tower opening for feed (41), the lower end of flashing tower (4) is communicated with the upper end of flashing chamber (5), flashing chamber gaseous phase outlet (51) is connected with flash condenser condensed gas entrance (23), flashing tower discharge port (42) is connected to dealdehyder tower after convergeing to pipeline (6) with flashing chamber discharge port (52).
2. tetramethylolmethane full gear device according to claim 1, is characterized in that: the plate-type heat exchanger gas phase import of described plate-type heat exchanger (3) is all connected with the gaseous phase outlet of dealdehyder tower with the flashing tower gas phase import of flashing tower (4).
3. tetramethylolmethane full gear device according to claim 1, is characterized in that: described pipeline (6) is provided with pump (7), on pipeline (6), be also provided with arm (8), arm (8) is connected to flashing tower opening for feed (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502999.0A CN103848721A (en) | 2012-11-30 | 2012-11-30 | Aldehyde removal apparatus of pentaerythritol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502999.0A CN103848721A (en) | 2012-11-30 | 2012-11-30 | Aldehyde removal apparatus of pentaerythritol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103848721A true CN103848721A (en) | 2014-06-11 |
Family
ID=50856888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502999.0A Pending CN103848721A (en) | 2012-11-30 | 2012-11-30 | Aldehyde removal apparatus of pentaerythritol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103848721A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105693467A (en) * | 2016-04-06 | 2016-06-22 | 内蒙古宜化化工有限公司 | Energy-saving production method of pentaerythritol |
| CN109516993A (en) * | 2019-01-02 | 2019-03-26 | 阳煤丰喜肥业(集团)有限责任公司平陆分公司 | A kind of production equipment and its production technology of hexa |
| CN110330418A (en) * | 2019-06-20 | 2019-10-15 | 湖北楚星化工股份有限公司 | A method of recycling the formaldehyde gas to volatilize in atmospheric unit in Production of pentaerythritol |
-
2012
- 2012-11-30 CN CN201210502999.0A patent/CN103848721A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105693467A (en) * | 2016-04-06 | 2016-06-22 | 内蒙古宜化化工有限公司 | Energy-saving production method of pentaerythritol |
| CN105693467B (en) * | 2016-04-06 | 2018-02-09 | 内蒙古宜化化工有限公司 | A kind of pentaerythrite energy-saving production method |
| CN109516993A (en) * | 2019-01-02 | 2019-03-26 | 阳煤丰喜肥业(集团)有限责任公司平陆分公司 | A kind of production equipment and its production technology of hexa |
| CN109516993B (en) * | 2019-01-02 | 2024-01-19 | 阳煤丰喜肥业(集团)有限责任公司平陆分公司 | Production equipment of hexamethylenetetramine |
| CN110330418A (en) * | 2019-06-20 | 2019-10-15 | 湖北楚星化工股份有限公司 | A method of recycling the formaldehyde gas to volatilize in atmospheric unit in Production of pentaerythritol |
| CN110330418B (en) * | 2019-06-20 | 2022-03-15 | 湖北楚星化工股份有限公司 | Method for recovering formaldehyde gas volatilized in normal pressure device in pentaerythritol production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103709016B (en) | A kind of pervaporation method refines technique and the device of glycol dimethyl ether | |
| CN104817481A (en) | Technological method for recovering DMSO from DMSO aqueous solution | |
| CN111635293A (en) | Sodium methoxide production device and method | |
| CN110937744B (en) | Dimethylamine treatment process in synthetic leather DMF (dimethyl formamide) wastewater heat pump rectification process | |
| CN105693467B (en) | A kind of pentaerythrite energy-saving production method | |
| CN105561616A (en) | Gasification ash water low-pressure flash heat energy utilizing device and heat energy utilizing method thereof | |
| CN107827847B (en) | System and method for continuously preparing furfural by utilizing lignocellulose raw material | |
| CN103848721A (en) | Aldehyde removal apparatus of pentaerythritol | |
| CN111233690A (en) | DMAc thermal coupling refining and recycling system and method | |
| CN203108242U (en) | Double-effect evaporation system used for ammonium sulphate concentration | |
| CN204400883U (en) | Pentamethylene diamine purification system | |
| CN102408349B (en) | System for removing formic acid generated during dimethylformamide recovering process | |
| CN209507643U (en) | A kind of waste liquid recovery apparatus | |
| CN104788321A (en) | Recycling device and recycling technology of dimethylamine | |
| CN111423025A (en) | Treatment device and treatment method for shift condensate decarburization and by-product ammonium sulfate | |
| CN201775977U (en) | Treatment device for reaction tail gas in trimellitic acid production | |
| CN108911950B (en) | Equipment and method for separating alcohol and ammonium carbonate in wastewater | |
| CN203065374U (en) | Pentaerythritol dealdehyding device | |
| CN211284206U (en) | Caprolactam purification device in 6-aminocapronitrile preparation process | |
| CN2805873Y (en) | Apparatus for improving raw liquor evaporation temperature | |
| CN203437120U (en) | Deamination and dehydration device for sodium persulfate (persulfate) synthetic fluid | |
| CN102839056A (en) | Stepped recovery and purification method and device of biodiesel methanol | |
| CN201458996U (en) | Device for removing calcium formate from pentaerythritol in calcium-method production | |
| CN215440042U (en) | TGIC washing waste water cyclic utilization system | |
| CN212119075U (en) | Acetyl n-propanol product purification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |