CN202688234U - High-purity 1, 4-butanediol production device - Google Patents
High-purity 1, 4-butanediol production device Download PDFInfo
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- CN202688234U CN202688234U CN 201220336815 CN201220336815U CN202688234U CN 202688234 U CN202688234 U CN 202688234U CN 201220336815 CN201220336815 CN 201220336815 CN 201220336815 U CN201220336815 U CN 201220336815U CN 202688234 U CN202688234 U CN 202688234U
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Abstract
The utility model discloses a high-purity 1, 4-butanediol production device which comprises a dewatering system, a butanol recovery system, a residue removing system, a product system and a residual liquid recovery system. The dewatering system mainly comprises a vacuum dewatering tower and an atmospheric dewatering tower, the butanol recovery system mainly comprises an alcohol tower and a butanol tower, the residue removing system mainly comprises a flash tower, a condenser, a film evaporator and a falling film evaporator, the product system mainly comprises an intermediate tower and a first finished product tower, the residual liquid recovery system mainly comprises a second finished product tower, and a raw material inlet end of the second finished product tower is connected with a bottom discharge opening of the first finished product tower of the product system. The second finished product tower is used as the residual liquid recovery system, residues discharged by the first finished product tower of the product system are distilled twice, the purity of final 1, 4-butanediol (BDO) can be improved, the discharge quantity of the 1, 4-butanediol is reduced, the production cost of enterprises is reduced, and the economic benefit of the enterprises is improved.
Description
Technical field
The utility model relates to a kind of high purity BDO (BDO) production unit.
Background technology
At present, 65% water is contained in China in the reacted cymogene glycol of high-pressure tower product when producing BDO (BDO) production unit, and all the other major parts are butyleneglycol and some low-boiling-point substances and high boiling material.As shown in Figure 1, cymogene glycol product at first enters dewatering system and processes, and dewatering system mainly comprises vacuum column dehydration tower and atmospheric tower dehydration tower.Cymogene glycol product through dehydration after, low-boiling-point substance wherein and water enter the Butanol Recycling system and process, the Butanol Recycling system mainly comprises pure tower and butanols tower, finally produces the byproduct butanols and discharges from butanols tower middle part side line; Wherein butyleneglycol is then successively by taking off residue system and product systems are processed behind the cymogene glycol product dehydrate.Take off residue system and mainly comprise flashing tower, condenser, thin-film evaporator and falling-film evaporator; Product systems mainly comprise inter-chamber tower and finishing column, and final BDO (BDO) is from the cat head output of finishing column.In the production process of reality, finishing column efflux BDO (BDO) and the restructuring component is larger, original design outer discharge capacity is 200Kg/h, BDO (BDO) accounts for 57.3% restructuring and minute accounts for 37.7%.And at present outer discharge capacity reaches 800Kg/h BDO (BDO) and accounts for 85.0% restructuring and divide and account for 15.0%.The BDO that effluxes in a large number in the actual production process (BDO) has caused the huge waste of enterprise's production cost, and the BDO that directly effluxes every day (BDO) causes the tens thousand of units of company's Direct Loss.Simultaneously, can produce qualified product for guaranteeing the product tower, quantity of reflux in the real work has reached 11Nm3/h, and the quantity of reflux of design only is 6.6Nm3/h, to cause like this effluxing at the bottom of the finishing column tower a large amount of 1,4-butyleneglycol (BDO) and restructuring minute enter the shell vapourizing furnace in order to produce synthetic gas, waste a large amount of steam and can't further improve again product purity, resource and the energy can not be utilized, increase the production cost of enterprise, reduced the economic benefit of enterprise.
The utility model content
The purpose of this utility model provides a kind of high purity BDO production unit, can improve the finished product 1, the purity of 4-butyleneglycol (BDO) reduces the outer discharge capacity of BDO (BDO) simultaneously, reduce enterprise's production cost, improve Business Economic Benefit.
The utility model adopts following technical proposals:
A kind of high purity 1,4-butyleneglycol production unit, comprise dewatering system, the Butanol Recycling system, take off residue system and product systems, dewatering system mainly comprises vacuum column dehydration tower and atmospheric tower dehydration tower, the Butanol Recycling system mainly comprises pure tower and butanols tower, take off residue system and mainly comprise flashing tower, condenser, thin-film evaporator and falling-film evaporator, product systems mainly comprise inter-chamber tower and the first finishing column, also comprise raffinate recovery system, raffinate recovery system mainly comprises the second finishing column, and the bottom that the feed(raw material)inlet end of the second finishing column connects product systems the first finishing column effluxes mouth.
The utility model utilizes the second finishing column as raffinate recovery system, the residue that the first finishing column in the product systems is effluxed carries out second distillation, can improve the finished product 1, the purity of 4-butyleneglycol (BDO), reduce simultaneously 1, the outer discharge capacity of 4-butyleneglycol (BDO) reduces enterprise's production cost, improves Business Economic Benefit.
Description of drawings
Fig. 1 is the functional block diagram of existing BDO (BDO) production unit;
Fig. 2 is functional block diagram of the present utility model.
Embodiment
As shown in Figure 2, the utility model comprises dewatering system, Butanol Recycling system, takes off residue system, product systems and raffinate recovery system.Cymogene glycol product at first enters dewatering system and processes, and dewatering system mainly comprises vacuum column dehydration tower and atmospheric tower dehydration tower.Cymogene glycol product through dehydration after, low-boiling-point substance wherein and water enter the Butanol Recycling system and process, the Butanol Recycling system mainly comprises pure tower and butanols tower, finally produces the byproduct butanols and discharges from butanols tower middle part side line; Wherein butyleneglycol is then successively by taking off residue system and product systems are processed behind the cymogene glycol product dehydrate.Take off residue system and mainly comprise flashing tower, condenser, thin-film evaporator and falling-film evaporator; Product systems mainly comprise inter-chamber tower and the first finishing column, and final BDO (BDO) is from the cat head output of the first finishing column.Raffinate recovery system mainly comprises the second finishing column, and the bottom of the first finishing column effluxes a mouthful feed(raw material)inlet end that connects the second finishing column in the product systems.The second finishing column can distill again to the residue that the first finishing column bottom in the product systems effluxes, with comprise in the residue 1,4-butyleneglycol (BDO) extracts, and then the residue that will process effluxes, and can effectively control BDO (BDO) content in the residue, improve 1, the yield and quality of 4-butyleneglycol (BDO) finally can obtain purity at the BDO more than 99.6% (BDO) after the second stage of finishing column is processed.Simultaneously, the utility model can be reduced to 150 Kg/h with the actual scale that effluxes of BDO (BDO), can reduce enterprises' loss 4.32 ten thousand every day, can reduce enterprises' loss 1,296 ten thousand every year, has greatly improved Business Economic Benefit.
Claims (1)
1. high purity 1,4-butyleneglycol production unit, comprise dewatering system, the Butanol Recycling system, take off residue system and product systems, dewatering system mainly comprises vacuum column dehydration tower and atmospheric tower dehydration tower, the Butanol Recycling system mainly comprises pure tower and butanols tower, take off residue system and mainly comprise flashing tower, condenser, thin-film evaporator and falling-film evaporator, product systems mainly comprise inter-chamber tower and the first finishing column, it is characterized in that: also comprise raffinate recovery system, raffinate recovery system mainly comprises the second finishing column, and the bottom that the feed(raw material)inlet end of the second finishing column connects product systems the first finishing column effluxes mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336815 CN202688234U (en) | 2012-07-12 | 2012-07-12 | High-purity 1, 4-butanediol production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336815 CN202688234U (en) | 2012-07-12 | 2012-07-12 | High-purity 1, 4-butanediol production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202688234U true CN202688234U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220336815 Expired - Fee Related CN202688234U (en) | 2012-07-12 | 2012-07-12 | High-purity 1, 4-butanediol production device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202688234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129424A (en) * | 2017-06-27 | 2017-09-05 | 查都（上海）科技有限公司 | A kind of butanediol and n-butanol purification system |
-
2012
- 2012-07-12 CN CN 201220336815 patent/CN202688234U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129424A (en) * | 2017-06-27 | 2017-09-05 | 查都（上海）科技有限公司 | A kind of butanediol and n-butanol purification system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20190712 |