CN211284249U - BDO tar recovery system - Google Patents
BDO tar recovery system Download PDFInfo
- Publication number
- CN211284249U CN211284249U CN201921796294.8U CN201921796294U CN211284249U CN 211284249 U CN211284249 U CN 211284249U CN 201921796294 U CN201921796294 U CN 201921796294U CN 211284249 U CN211284249 U CN 211284249U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- storage tank
- condenser
- bdo
- valve
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A BDO tar recovery system comprises a buffer tank, an evaporator, a first condenser, a crude product storage tank, a rectifying tower, a reboiler, a second condenser, a third condenser, a reflux storage tank and a finished product storage tank, wherein the buffer tank supplies materials to the evaporator through a first pipeline, a steam exhaust port of the evaporator is connected with the first condenser through a second pipeline, the first condenser is connected with the crude product storage tank through a third pipeline, the crude product storage tank is connected with the rectifying tower through a fourth pipeline, the rectifying tower is connected with the second condenser through a fifth pipeline, the second condenser is connected with the third condenser in series, the third condenser is connected with the reflux storage tank through a sixth pipeline, the reflux storage tank is connected with the finished product storage tank through a seventh pipeline, a third conveying pump and a first valve are arranged on the seventh pipeline, the BDO tar recovery system further comprises an eighth pipeline, the upstream end of the eighth pipeline is connected with the seventh pipeline in parallel, the downstream end of the eighth pipeline is connected with the upper part of the side wall of the rectifying tower, and a second valve is arranged on the eighth pipeline.
Description
Technical Field
The utility model relates to a chemical industry field, in particular to BDO tar recovery system.
Background
BDO, 1,4 butanediol, is an important chemical feedstock. In the normal production process of the BDO device, the generated by-products and waste liquid mainly comprise BDO tar (containing BDO, THF, methanol, butanol, ethanol and the like) and crude butanol (mainly containing methanol, butanol, propanol and the like). At present, most of the treatment methods of the byproducts adopt incineration, so that the economic benefit is low, the resources are seriously wasted, and the environmental protection requirement is not met.
Therefore, how to efficiently recycle these by-products is a problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims at prior art not enough, provide a BDO tar recovery system, its easy operation, security are high, and the transformation investment is little and have good economic benefits, can thoroughly solve the environmental protection pressure that manufacturing enterprise brought because of producing the waste liquid, still has the advantage of environmental protection.
Realize the utility model discloses the technical scheme of purpose is: a BDO tar recovery system comprises a buffer tank, an evaporator, a first condenser, a crude product storage tank, a rectifying tower, a reboiler, a second condenser, a third condenser, a reflux storage tank and a finished product storage tank, wherein a feed inlet of the buffer tank is used for being connected with a BDO tar source, a discharge outlet of the buffer tank supplies materials to the evaporator through a first pipeline, a first conveying pump is arranged on the first pipeline, a steam exhaust port of the evaporator is connected with the first condenser through a second pipeline, a liquid discharge port of the first condenser is connected with the crude product storage tank through a third pipeline, the crude product storage tank is connected with the feed inlet of the rectifying tower through a fourth pipeline, a second conveying pump is arranged on the fourth pipeline, a steam exhaust port at the top of the rectifying tower is connected with the second condenser through a fifth pipeline, the second condenser is connected with the third condenser in series, and the liquid discharge port of the third condenser is connected with the reflux storage tank through a sixth pipeline, the reflux storage tank is connected with the finished product storage tank through a seventh pipeline, a third conveying pump and a first valve are arranged on the seventh pipeline, the first valve is located at the downstream of the third conveying pump, the reflux storage tank further comprises an eighth pipeline, the upstream end of the eighth pipeline is connected with the seventh pipeline in parallel and located between the third conveying pump and the first valve, the downstream end of the eighth pipeline is connected with the upper portion of the side wall of the rectifying tower, a second valve is arranged on the eighth pipeline, a feeding port of the reboiler is connected with the bottom of the rectifying tower, and a discharging port of the reboiler is connected with the middle portion of the side wall of the rectifying tower.
Still include the raffinate storage tank, the feed inlet of raffinate storage tank is connected with the leakage fluid dram of evaporimeter, and the raffinate storage tank is to burning furnace feed.
The residual liquid storage tank is connected with the first pipeline in parallel through a ninth pipeline and is positioned at the downstream of the first conveying pump, and a fourth conveying pump is arranged on the ninth pipeline.
The system is characterized by further comprising a condensate buffer tank, wherein the condensate buffer tank is communicated with the first condenser and the crude product storage tank, a fifth delivery pump is arranged between the condensate buffer tank and the crude product storage tank, and the condensate buffer tank is connected with a vacuum system.
And a preheater is arranged on the fourth pipeline and is positioned at the downstream of the second delivery pump.
The reflux storage tank is connected with a vacuum system.
The first valve and the second valve are both flow regulating valves.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the BDO tar recovery system comprises a buffer tank, an evaporator, a first condenser, a crude product storage tank, a rectifying tower, a reboiler, a second condenser, a third condenser, a reflux storage tank and a finished product storage tank, wherein the buffer tank is used for buffering BDO tar, the evaporator is used for preliminarily separating BDO tar, and the rectifying tower is used for finely separating BDO tar. The feed inlet of buffer tank is used for being connected with BDO tar source, and the bin outlet of buffer tank is equipped with first delivery pump through first pipeline to the evaporimeter feed on this first pipeline, treats that the BDO tar of separation recovery is through the buffering back, and the at the uniform velocity gets into the evaporimeter, guarantees the normal operation of evaporimeter, provides stable initial separation environment. The steam vent of evaporimeter passes through the second pipeline and is connected with first condenser, and the leakage fluid dram of first condenser passes through the third pipeline and is connected with the crude storage tank, and BDO tar is through evaporimeter initial gross separation back, and the vapour phase of discharging by the evaporimeter is mainly BDO to and a small amount of tar, sodium formate and high boiling thing, these vapour phases are after cooling is the liquid, are used for meticulous separation once more. The crude product storage tank is connected with the feed inlet of the rectifying tower through a fourth pipeline, a second conveying pump is arranged on the fourth pipeline, a steam outlet at the top of the rectifying tower is connected with a second condenser through a fifth pipeline, the second condenser is connected with a third condenser in series, a liquid discharge port of the third condenser is connected with the reflux storage tank through a sixth pipeline, a liquid phase in the crude product storage tank is used as a raw material of the rectifying tower and is finely separated in the rectifying tower again, a vapor phase discharged by the rectifying tower is mainly BDO, the purity reaches more than 99.13%, impurities are extremely small amount of tar, sodium formate and high-boiling substances, the external sales standard is met, and the crude product storage tank can be used for external direct sales. The reflux storage tank is connected with the finished product storage tank through a seventh pipeline, a third conveying pump and a first valve are arranged on the seventh pipeline, the first valve is located at the downstream end of the third conveying pump, the reflux storage tank further comprises an eighth pipeline, the upstream end of the eighth pipeline is connected with the seventh pipeline in parallel and located between the third conveying pump and the first valve, the downstream end of the eighth pipeline is connected with the upper portion of the side wall of the rectifying tower, a second valve is arranged on the eighth pipeline, the purpose of adjusting the reflux ratio of the rectifying tower is achieved quickly and conveniently by adjusting the opening degree of the first valve and the second valve, and the purity of the BDO product obtained by rectification is further improved. The feed inlet of reboiler is connected with the bottom of rectifying column, the discharge gate of reboiler is connected with the lateral wall middle part of rectifying column, reboiler and rectifying column cooperation operation provide required heat to the rectifying column, in addition, the discharge gate of reboiler is connected with rectifying column lateral wall middle part, reboiler exhaust vapor phase, liquid phase mixture return the rectifying column, vapor phase in wherein liquid phase is discharged along with the rectifying column, the vapor phase countercurrent contact that rises in wherein liquid phase and the rectifying column has still further improved the purity of vapor phase.
2. The utility model discloses still be provided with the raffinate storage tank, the feed inlet of raffinate storage tank is connected with the leakage fluid dram of evaporimeter, and the raffinate storage tank is parallelly connected with first pipeline through the ninth pipeline, is located the low reaches of first delivery pump, be equipped with the fourth delivery pump on the ninth pipeline, evaporimeter bottom exhaust raffinate is BDO, tar, sodium formate, the thick mixture of high boiling thing and sodium hydroxide etc. gets into the raffinate storage tank after, and partly raffinate returns the evaporimeter through the fourth delivery pump, improves the utilization ratio of raffinate, and after BDO content is low to no recovery value in the raffinate, externally discharges to burning furnace and burn the processing.
3. And a preheater is arranged on the fourth pipeline and is positioned at the downstream of the second delivery pump, so that the raw material entering the rectifying tower is preheated, the load of the rectifying tower is reduced, the raw material entering the rectifying tower is prevented from bumping, and the component separation is facilitated.
4. The utility model discloses a control the aperture of first valve, second valve, the reflux ratio of control rectifying column realizes the less and higher purpose of purity of BDO component of the required energy consumption of rectification, satisfies the actual demand of enterprise.
The following further description is made with reference to the accompanying drawings and detailed description.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
In the drawing, 1 is a buffer tank, 2 is an evaporator, 3 is a first condenser, 4 is a crude product storage tank, 5 is a rectifying tower, 6 is a reboiler, 7 is a second condenser, 8 is a third condenser, 9 is a reflux storage tank, 10 is a finished product storage tank, 11 is a raffinate storage tank, 12 is a condensate buffer tank, 13 is a preheater, a is a first valve, B is a second valve, a is a first delivery pump, B is a second delivery pump, C is a third delivery pump, D is a fourth delivery pump, E is a fifth delivery pump, 101 is a first pipeline, 102 is a second pipeline, 103 is a third pipeline, 104 is a fourth pipeline, 105 is a fifth pipeline, 106 is a sixth pipeline, 107 is a seventh pipeline, 108 is an eighth pipeline, and 109 is a ninth pipeline.
Detailed Description
The utility model discloses in, do not mark the equipment of concrete connection mode, go on according to conventional condition or according to the condition of firm suggestion usually, do not mark the equipment of specific model, be the conventional equipment in chemical industry field usually.
Referring to fig. 1, a specific embodiment of a BDO tar recovery system is shown. The BDO tar recovery system comprises a buffer tank 1, an evaporator 2, a first condenser 3, a crude product storage tank 4, a rectifying tower 5, a reboiler 6, a second condenser 7, a third condenser 8, a reflux storage tank 9 and a finished product storage tank 10, wherein the rectifying tower is a packed tower, stainless steel corrugated packing is adopted as the packing, the specifications of the first condenser, the second condenser and the third condenser are the same, the first condenser, the second condenser and the third condenser are all tube-plate heat exchangers, and the reboiler is a tube-plate heat exchanger. The feed inlet of buffer tank 1 is used for being connected with the BDO tar source, and the bin outlet of buffer tank 1 is equipped with first delivery pump A through first pipeline 101 to the 2 supplies of evaporimeter on this first pipeline 101. The steam outlet of the evaporator 2 is connected with the first condenser 3 through a second pipeline 102, the liquid outlet of the first condenser 3 is connected with the crude product storage tank 4 through a third pipeline 103, in the embodiment, the system further comprises a residual liquid storage tank 11, a feed inlet of the residual liquid storage tank 11 is connected with the liquid outlet of the evaporator 2, the residual liquid storage tank 11 supplies materials to the incinerator, the residual liquid storage tank 11 is connected with the first pipeline 101 in parallel through a ninth pipeline 109 and is located at the downstream of the first delivery pump A, a fourth delivery pump D is arranged on the ninth pipeline 109, when the BDO content in the residual liquid intermittently discharged by the evaporator still has a recycling value, the residual liquid is pumped back to the evaporator through the fourth delivery pump to be continuously separated, and when the BDO content in the residual liquid is too low and does not have the recycling value, the residual liquid is directly conveyed to the incinerator by the storage tank to be incinerat. The crude product storage tank 4 is connected with the feed inlet of the rectifying tower 5 through a fourth pipeline 104, a second delivery pump B is arranged on the fourth pipeline 104, in the embodiment, the crude product storage tank further comprises a condensate buffer tank 12, the condensate buffer tank 12 is communicated with the first condenser 3 and the crude product storage tank 4, a fifth delivery pump E is arranged between the condensate buffer tank 12 and the crude product storage tank 4, the condensate buffer tank 12 is connected with a vacuum system, and specifically, the control pressure is 7 KPa. A preheater 13 is provided on the fourth pipe 104, and the preheater 13 is located downstream of the second transfer pump B. The top steam outlet of the rectifying tower 5 is connected with the second condenser 7 through a fifth pipeline 105, the second condenser 7 is connected with the third condenser 8 in series, and the liquid outlet of the third condenser 8 is connected with the reflux storage tank 9 through a sixth pipeline 106. The reflux storage tank 9 is connected with the finished product storage tank 10 through a seventh pipeline 107, a third delivery pump C and a first valve a are arranged on the seventh pipeline 107, the first valve a is located at the downstream of the third delivery pump C, specifically, the reflux storage tank is connected with a vacuum system, and the control pressure is 7 KPa. The rectifying tower further comprises an eighth pipeline 108, the upstream end of the eighth pipeline 108 is connected in parallel with the seventh pipeline 107 and located between the third delivery pump C and the first valve a, the downstream end of the eighth pipeline 108 is connected with the upper portion of the side wall of the rectifying tower 5, a second valve b is arranged on the eighth pipeline 108, and specifically, the first valve and the second valve are flow regulating valves. The feed inlet of the reboiler 6 is connected with the bottom of the rectifying tower 5, and the discharge outlet of the reboiler 6 is connected with the middle part of the side wall of the rectifying tower 5.
The process for recycling BDO tar by the BDO tar recycling system comprises the following steps:
1) BDO tar from a BDO tar storage tank of an acetylene workshop enters a buffer tank for buffering at the temperature of about 80-100 ℃, and is pumped into an evaporator by a first delivery pump after being buffered;
2) introducing 2.0MPa steam into a heating interlayer of the evaporator as a heating medium, and evaporating BDO tar in a vacuum state, wherein the evaporator is connected with a vacuum system, namely, the pressure of the evaporator is controlled to be 7 KPa;
3) the main components of the vapor phase discharged from the vapor outlet of the evaporator are BDO, and also contain a small amount of tar, sodium formate, high-boiling residues and the like, specifically, the BDO accounts for 92.1 percent, the tar accounts for 3.9 percent, the sodium formate accounts for 3.8 percent, the high-boiling residues accounts for 0.2 percent, after the BDO is condensed by the first condenser, non-condensable gas and BDO condensate are discharged from the liquid outlet of the first condenser, after the BDO is buffered by a condensate buffer tank, the condensate buffer tank is connected with a vacuum system, the pressure in the condensate buffer tank is controlled to be 7KPa, the non-condensable gas is pumped out, the BDO condensate is discharged to a crude product storage tank, the temperature is about 90 ℃, residual liquid is discharged to a residual liquid storage tank discontinuously at the bottom of the evaporator, the residual liquid is a viscous mixture of the BDO, the tar, the sodium formate, the high-boiling residues and sodium hydroxide, specifically, the BDO accounts for 37.5 percent, the tar accounts for 30.6 percent, the sodium formate accounts for 27.3.2 percent, the high-boiling residues, further recovering BDO in the waste water, cooling the other part of BDO to below 50 ℃, and then sending the BDO to an incinerator in an acetylene workshop for incineration treatment;
4) BDO condensate (BDO accounts for 92.1 percent, tar accounts for 3.9 percent, sodium formate accounts for 3.8 percent and high-boiling-point substance accounts for 0.2 percent) in the crude product storage tank is pumped into a preheater through a second delivery pump, the BDO condensate is heated to 173 ℃ by utilizing 1.0MPa steam, and then is pumped into a rectifying tower, the temperature of the upper part of the rectifying tower is 144-plus-146 ℃, the temperature of the lower part of the rectifying tower is 169-plus-171 ℃, the pressure of the rectifying tower is-94.8 KPa, the temperature of a reboiler is 172-plus-minus 173 ℃, a vapor phase discharged from a steam outlet at the top of the rectifying tower is cooled into a liquid state through a second condenser and a third condenser, and then is discharged into a reflux storage tank, specifically, the BDO accounts for 99.13 percent, the tar accounts for 0.43 percent, the sodium formate accounts for 0.42 percent and the high-boiling-point substance accounts for 0.02 percent, and tar and high-;
5) and (3) starting a third delivery pump, adjusting the opening degree of the first valve and the second valve, and enabling part of liquid phase in the reflux storage tank to reflux to the rectifying tower, wherein the reflux ratio is 1: and 3, conveying the rest part of liquid phase to a finished product storage tank, and standing to obtain a recovered product.
Claims (7)
1. A BDO tar recovery system which is characterized in that: comprises a buffer tank (1), an evaporator (2), a first condenser (3), a crude product storage tank (4), a rectifying tower (5), a reboiler (6), a second condenser (7), a third condenser (8), a reflux storage tank (9) and a finished product storage tank (10),
the feed inlet of the buffer tank (1) is used for being connected with a BDO tar source, the discharge outlet of the buffer tank (1) supplies materials to the evaporator (2) through a first pipeline (101), a first delivery pump (A) is arranged on the first pipeline (101),
the steam outlet of the evaporator (2) is connected with the first condenser (3) through a second pipeline (102), the liquid outlet of the first condenser (3) is connected with the crude product storage tank (4) through a third pipeline (103),
the crude product storage tank (4) is connected with a feed inlet of the rectifying tower (5) through a fourth pipeline (104), a second delivery pump (B) is arranged on the fourth pipeline (104),
a top steam outlet of the rectifying tower (5) is connected with a second condenser (7) through a fifth pipeline (105), the second condenser (7) is connected with a third condenser (8) in series, a liquid outlet of the third condenser (8) is connected with a reflux storage tank (9) through a sixth pipeline (106),
the return storage tank (9) is connected with the finished product storage tank (10) through a seventh pipeline (107), the seventh pipeline (107) is provided with a third delivery pump (C) and a first valve (a), the first valve (a) is positioned at the downstream of the third delivery pump (C),
the device also comprises an eighth pipeline (108), the upstream end of the eighth pipeline (108) is connected with the seventh pipeline (107) in parallel and is positioned between the third delivery pump (C) and the first valve (a), the downstream end of the eighth pipeline (108) is connected with the upper part of the side wall of the rectifying tower (5), the eighth pipeline (108) is provided with a second valve (b),
the feed inlet of reboiler (6) is connected with the bottom of rectifying column (5), and the discharge gate of reboiler (6) is connected with the lateral wall middle part of rectifying column (5).
2. The BDO tar recovery system of claim 1, wherein: still include raffinate storage tank (11), the feed inlet of raffinate storage tank (11) is connected with the leakage fluid dram of evaporimeter (2), and raffinate storage tank (11) are to burning furnace feed.
3. The BDO tar recovery system of claim 2, wherein: the raffinate storage tank (11) is connected with the first pipeline (101) in parallel through a ninth pipeline (109) and located at the downstream of the first conveying pump (A), and a fourth conveying pump (D) is arranged on the ninth pipeline (109).
4. The BDO tar recovery system of claim 1, wherein: still include condensate buffer tank (12), condensate buffer tank (12) intercommunication first condenser (3) and crude storage tank (4), be equipped with fifth delivery pump (E) between condensate buffer tank (12) and crude storage tank (4), condensate buffer tank (12) and vacuum system are connected.
5. The BDO tar recovery system of claim 1, wherein: a preheater (13) is arranged on the fourth pipeline (104), and the preheater (13) is positioned at the downstream of the second conveying pump (B).
6. The BDO tar recovery system of claim 1, wherein: the backflow storage tank (9) is connected with a vacuum system.
7. The BDO tar recovery system of claim 1, wherein: the first valve (a) and the second valve (b) are both flow regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796294.8U CN211284249U (en) | 2019-10-24 | 2019-10-24 | BDO tar recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796294.8U CN211284249U (en) | 2019-10-24 | 2019-10-24 | BDO tar recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211284249U true CN211284249U (en) | 2020-08-18 |
Family
ID=72020358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921796294.8U Active CN211284249U (en) | 2019-10-24 | 2019-10-24 | BDO tar recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211284249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564440A (en) * | 2019-10-24 | 2019-12-13 | 重庆建峰工业集团有限公司 | BDO tar recovery system and BDO tar recovery process |
-
2019
- 2019-10-24 CN CN201921796294.8U patent/CN211284249U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564440A (en) * | 2019-10-24 | 2019-12-13 | 重庆建峰工业集团有限公司 | BDO tar recovery system and BDO tar recovery process |
| CN110564440B (en) * | 2019-10-24 | 2024-07-19 | 重庆建峰工业集团有限公司 | BDO tar recovery system and BDO tar recovery process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111116317B (en) | Five-tower four-effect methanol rectification process and equipment | |
| CN101874935B (en) | Rectifying section tower bottom reboiling internal heat-integrated energy-saving rectifying apparatus and method | |
| CN109908616B (en) | Energy-saving distillation system for preparing ethanol from carbon monoxide and distillation method thereof | |
| CN205435023U (en) | Heat pump rectifier unit of sulphide among desorption MTBE | |
| CN110124343A (en) | Working medium heat-pump rectifying process | |
| CN105126374A (en) | tert-Butanol-water-cyclohexanone oxime differential-pressure rectification system | |
| CN101874934A (en) | Flash evaporation feed type internal heat integration energy-saving rectifying device and method | |
| CN211284249U (en) | BDO tar recovery system | |
| CN101874932A (en) | Heat integration energy-saving rectifying device and method | |
| CN207793116U (en) | Methanol Recovery energy saver | |
| CN104529704A (en) | Joint production system and joint production process for synthesizing and separating low-carbon mixed alcohol | |
| CN203677978U (en) | Vapor-compression type alcohol recovery tower | |
| CN104744195B (en) | After a kind of ether, carbon four purifies de-dimethyl ether tower energy saving technique | |
| CN110564440B (en) | BDO tar recovery system and BDO tar recovery process | |
| CN110590506A (en) | Crude butanol recovery system and process | |
| CN107141199B (en) | Non-reflux low-temperature rectification method and equipment for methanol mother liquor | |
| CN211199067U (en) | Crude butanol recovery system | |
| CN101143807A (en) | Method for producing dimethyl ether by separating heat tube type reactor | |
| CN213760550U (en) | Two-tower double-heat-pump integrated 1-butene refining energy-saving device | |
| CN107266295A (en) | MTBE purifying techniques | |
| CN208292896U (en) | The methanol recovery device of methyl tertiary butyl ether(MTBE) production | |
| CN105646147A (en) | Methanol recovery method | |
| CN204550427U (en) | After a kind of ether, carbon four purifies de-dme tower energy saver | |
| CN211199066U (en) | BDO/PTMEG device byproduct recovery system | |
| CN207769251U (en) | A kind of continuous type solvent recovery tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |