CN202322673U - Adipate separating system - Google Patents
Adipate separating system Download PDFInfo
- Publication number
- CN202322673U CN202322673U CN2011204652792U CN201120465279U CN202322673U CN 202322673 U CN202322673 U CN 202322673U CN 2011204652792 U CN2011204652792 U CN 2011204652792U CN 201120465279 U CN201120465279 U CN 201120465279U CN 202322673 U CN202322673 U CN 202322673U
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- Prior art keywords
- adipate
- evaporator
- hexanodioic acid
- slurry
- centrifugal machine
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- 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 - Lifetime
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Abstract
The utility model relates to an adipate separating system which comprises an evaporator and a centrifugal machine, wherein the evaporator is used for pre-evaporation to adipate slurry to remove part of nitric acid and water, and the centrifugal machine is used for centrifugal separation to adipate slurry after pre-evaporation to separate remained nitric acid and water. The adipate separating system is characterized in that a buffer tank is also arranged between the evaporator and the centrifugal machine, the inlet of the buffer tank is connected with the slurry outlet of the evaporator, and the outlet of the buffer tank is connected with the inlet of the centrifugal machine. Compared with the prior art, the utility model has the advantages that since the buffer tank used for storing the discharge of the evaporator is arranged between the evaporator and the centrifugal machine, the centrifugal machine can be fed continuously from the interior of the buffer tank, the adipate separating system is enabled to operate continuously, the problem of equipment idling during discontinuous operation can be avoided, and on the premise that equipment investment and equipment operating cost are reduced, the productivity is increased.
Description
Technical field
The utility model relates to the chemical plant installations field, specifically refers to a kind of hexanodioic acid separation system.
Background technology
Hexanodioic acid is the important source material of preparation urethane and nylon 66, also is the midbody of many oil dopes simultaneously.In traditional Production Processes of Adipic Acid, mainly be with benzene as starting raw material, produce the hexamethylene alcohol ketone through hydro-oxidation, become hexanodioic acid with nitric acid oxidation again.
Among the hexanodioic acid preparation technology, hexanodioic acid and nitric acid separate and the enrichment of hexanodioic acid is important operation, this relates to the purity and the performance of the finished product.Existing hexanodioic acid separation system mainly comprises vaporizer and whizzer, and vaporizer is claimed the enrichment device again.The slurry that contains hexanodioic acid behind the primary crystallization at first gets into vaporizer and removes some of nitric acid and water; Send into whizzer after making the content of hexanodioic acid reach about 40%, under the effect of whizzer, further remove wherein nitric acid and water, pass through recrystallization at last after; Get into smart acid-thickened device enrichment again; Separate the smart hexanodioic acid that obtains containing moisture through smart acid centrifuging machine, then through the fluidizing drying bed moisture of removing wherein, cooling obtains required smart hexanodioic acid again.
Existing hexanodioic acid stripping technique is because the discontinuous operation of vaporizer makes that supporting whizzer can only be a discontinuous operation also, has limited the treatment scale of separation system.The processing power of separation system has restricted the production capacity of a whole set of adipic acid plant in the prior art.If the method that adopts two cover separation system parallel connections to use is enhanced production capacities, its overcapacity causes the waste of cost of investment, simultaneously equipment is worked in the normal load scope, can cause the waste of equipment again.
Summary of the invention
The utility model technical problem to be solved be the present situation to prior art provide a kind of equipment is used fully and can satisfy simultaneously produce workload demand, also can reduce the hexanodioic acid separation system of investment of devices, reduction running cost.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this hexanodioic acid separation system; Comprise and be used for the hexanodioic acid slurry is carried out the whizzer of pre-evaporation to remove part nitric acid and evaporation of water device and the hexanodioic acid slurries spinning behind the pre-evaporation to be gone out to remain nitric acid and water; It is characterized in that also being provided with surge tank between said vaporizer and the said whizzer; The inlet of said surge tank connects the slurry outlet of said vaporizer, and the outlet of said surge tank connects the inlet of said whizzer.
Preferably, be deposited in the surge tank, can in said surge tank, be provided with whisking appliance in order to prevent adipic acid crystals.
As improvement, the strainer in the such scheme, said vaporizer is a candle filter.
Compared with prior art; The utility model is owing to be provided with the surge tank that is used to store vaporizer discharging material between vaporizer and whizzer; Whizzer can be from continuously feeding in the surge tank like this, makes that the hexanodioic acid separation system can operate continuously, the idle problem of equipment when having avoided gap operating; Under the prerequisite that reduces facility investment and equipment operation cost, increased production capacity.
Description of drawings
Fig. 1 is the floor map of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, this hexanodioic acid separation system comprises:
Vaporizer 1, the hexanodioic acid slurry that the upper reaches are come carries out pre-evaporation to remove part nitric acid and water, is provided with the candle filter (not shown) in the vaporizer.The bottom of vaporizer is provided with slurry outlet, and this slurry outlet connects the material inlet of following surge tank 2; The middle part of vaporizer 1 is provided with waste outlet, and its top is provided with gaseous phase outlet.
Surge tank 2 is used to store the hexanodioic acid slurry that vaporizer 1 is sent here, is provided with whisking appliance 21 in it, to prevent the deposition of the adipic acid crystals in the hexanodioic acid slurry.The top of surge tank is provided with gaseous phase outlet, is used for discharged air.
Whizzer 3, the hexanodioic acid slurry that surge tank 2 is sent here carries out centrifugal, so that adipic acid crystals and water, nitric acid are separated.
The principle of work of above-mentioned hexanodioic acid separation system is following:
The hexanodioic acid slurry that comes from the upper reaches gets in the vaporizer 1; Purging through air falls; The filtration of candle filter in vaporizer; The hexanodioic acid slurry that contains portion water and nitric acid that obtains gets in the surge tank 2 from the outlet at bottom of vaporizer, and water and nitric acid are sent into next process from the waste outlet at vaporizer middle part.
Hexanodioic acid slurry behind the enrichment gets in the whizzer 3 with certain flow in surge tank, and the gas after the stirring is discharged emptying from the gaseous phase outlet of buffering tank top.The hexanodioic acid slurry is further separated in whizzer, obtains adipic acid crystals and salpeter solution, sends into upstream device respectively.
Claims (3)
1. hexanodioic acid separation system; Comprise and be used for the hexanodioic acid slurry is carried out the whizzer of pre-evaporation to remove part nitric acid and evaporation of water device and the hexanodioic acid slurries spinning behind the pre-evaporation to be gone out to remain nitric acid and water; It is characterized in that also being provided with surge tank between said vaporizer and the said whizzer; The inlet of said surge tank connects the slurry outlet of said vaporizer, and the outlet of said surge tank connects the inlet of said whizzer.
2. hexanodioic acid separation system according to claim 1 is characterized in that being provided with whisking appliance in the said surge tank.
3. hexanodioic acid separation system according to claim 1 and 2 is characterized in that being provided with candle filter in the said vaporizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204652792U CN202322673U (en) | 2011-11-21 | 2011-11-21 | Adipate separating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204652792U CN202322673U (en) | 2011-11-21 | 2011-11-21 | Adipate separating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202322673U true CN202322673U (en) | 2012-07-11 |
Family
ID=46434661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204652792U Expired - Lifetime CN202322673U (en) | 2011-11-21 | 2011-11-21 | Adipate separating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202322673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704949A (en) * | 2018-12-10 | 2019-05-03 | 安徽金禾实业股份有限公司 | The separation method of sodium formate in a kind of production of neopentyl glycol |
-
2011
- 2011-11-21 CN CN2011204652792U patent/CN202322673U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704949A (en) * | 2018-12-10 | 2019-05-03 | 安徽金禾实业股份有限公司 | The separation method of sodium formate in a kind of production of neopentyl glycol |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CNCEC SEDIN NINGBO ENGINEERING CO., LTD. Free format text: FORMER NAME: NINGBO ENGINEERING CO., LTD, SECOND DESIGN INSTITUTE OF CHEMICAL INDUSTRY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315040 No. 999, Lane 1, sailing Road, hi tech Zone, Zhejiang, Ningbo Patentee after: Sedin Ningbo Engineering Co., Ltd. Patentee after: Huafeng Group Corp., Ltd. Address before: 315040 No. 999, Lane 1, sailing Road, hi tech Zone, Zhejiang, Ningbo Patentee before: Ningbo Engineering Co., Ltd, Second Design Institute of Chemical Industry Patentee before: Huafeng Group Corp., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20180503 Address after: 315040 1 Lane 999 lane, Yang Fan Road, Ningbo, Zhejiang, 5-1, 5-2, 5-5, 5-6 Co-patentee after: Chongqing Huafeng Chemical Co., Ltd. Patentee after: Sedin Ningbo Engineering Co., Ltd. Address before: 315040 No. 999 lane, Yang Fan Road, Ningbo high tech Zone, Zhejiang, China 1 Co-patentee before: Huafeng Group Corp., Ltd. Patentee before: Sedin Ningbo Engineering Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |