CN104129881A - Furfural wastewater treatment system and process - Google Patents
Furfural wastewater treatment system and process Download PDFInfo
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- CN104129881A CN104129881A CN201410368528.4A CN201410368528A CN104129881A CN 104129881 A CN104129881 A CN 104129881A CN 201410368528 A CN201410368528 A CN 201410368528A CN 104129881 A CN104129881 A CN 104129881A
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Abstract
The invention discloses a furfural wastewater treatment system and process. The system of the invention comprises a waste water tank, a first conveying pump and a solid-liquid separator, which are orderly connected. The outlet of the first solid-liquid separator is connected with an inlet of a heat exchanger, and a heat exchange outlet corresponding to the inlet is sequentially connected with a circulation pump, a heating chamber and a separation room; the lower outlet of the separation chamber is on the one hand connected with a circulating pump, and on the other hand connected with a second pump; the second pump outlet is connected with a cyclone hydraulic separator; the upper outlet of the cyclone hydraulic separator is connected with the inlet of the circulating pump; the lower outlet of the cyclone hydraulic separator is connected with the other inlet of the heat exchanger; the heat exchanger outlet corresponding to the inlet is connected with a second solid-liquid separator, and the outlet of the second solid-liquid separator is connected to the waste water tank. The system of the invention changes natural circulation into compulsory circulation, reduces the vaporization amount of liquid in the heat exchange pipe and forces to scour the tube wall, delays the hanging and wall coking time of an evaporator, prolongs the running period of the device, and prolongs the cleaning time for the device to every 3 months.
Description
Technical field
The invention belongs to technical field of waste water processing, be specifically related to a kind of furfural waste-water treatment system and technique.
Background technology
The high boiling material of similar " sticky oily matter " after the furfural dregs that contains superfine granularity in the waste water of discharging at the bottom of furfural primary tower and furfuryl resin.Traditional furfural waste-water is processed and is adopted natural circulation mode evaporation, often needs about 1 month, there will be coking wall built-up even to stop up in pipe, causes vaporizer heat exchange efficiency to decline, and device is forced to cleaning during shutdown, maintenance, greatly reduces production efficiency.
Summary of the invention
The object of the present invention is to provide a kind of furfural waste-water treatment system, the technique of utilizing this system to process furfural waste-water is provided simultaneously.
For achieving the above object, the present invention adopts following technical scheme:
A kind of furfural waste-water treatment system, comprise the wastewater disposal basin connecting in turn, the first transferpump, the first solid-liquid separator, the outlet of the first solid-liquid separator connects an entrance of interchanger, the heat exchanger exit corresponding with this entrance is connected with recycle pump in turn, heating chamber and separate chamber, the lower outlet of separate chamber connects recycle pump on the one hand, connect on the other hand the second transferpump, the second transferpump outlet connects wet cyclone, the upper outlet of wet cyclone connects the entrance of recycle pump, the lower outlet of wet cyclone connects another entrance of interchanger, the heat exchanger exit corresponding with this entrance connects the second solid-liquid separator, the outlet of the second solid-liquid separator connects wastewater disposal basin.
Preferably, described the first solid-liquid separator and the second solid-liquid separator are plate-and-frame filter press.
Utilize said system to process the technique of furfural waste-water, waste water at the bottom of furfural primary tower tower is entered to precipitation in wastewater disposal basin (because have solid-liquid separator to filter in the technique of back, therefore sedimentation time can be adjusted according to practical condition), clear liquid after precipitation enters the first solid-liquid separator by the first transferpump and removes after impurity, pass through again interchanger, recycle pump enters heating chamber heating, the hydrothermal solution that heating chamber produces enters separate chamber and processes, the secondary steam that separate chamber produces is delivered to hydrolysis post, the material that the lower outlet of separate chamber produces enters heating chamber heating evaporation by recycle pump on the one hand, enter wet cyclone by the second transferpump on the other hand, the clear liquor that the upper outlet of wet cyclone produces enters recycle pump, the clear liquor that the upper outlet of wet cyclone produces enters pump entry and returns to heating chamber, and the dope that the lower outlet of wet cyclone produces enters the second solid-liquid separator after by interchanger and again after removal of impurities, enters in wastewater disposal basin, the wherein flow velocity > 3m/s in circulating-pump outlet liquids heating chamber, the inventory that enters wet cyclone by the second transferpump is the 3-5wt% of separate chamber's inlet feed amount.
The primary steam pressure that heating chamber heating needs is 14-15kgf/cm
2, the secondary steam pressure that separate chamber produces is 10-11kgf/cm
2.It is to ensure that circulating liquid does not produce vaporization in circulation tube that the flow of circulating-pump outlet liquid is selected on the one hand, has so just reduced tube wall vaporization and has produced coking phenomenon; Flow velocity > 3m/s in circulating-pump outlet liquids heating chamber on the other hand, can brush down the dirt high-speed punching of wall built-up, has so just extended heating chamber life cycle.
System of the present invention changes natural circulation into pump circulation, along with evaporation of water in separate chamber, feed liquid is enrichment slowly, the material being dissolved in liquid can separate out, system is extracted a part of waste water out through solid-liquid separator, remove the thin thing of carrying secretly in waste water, just reduce the coking material content of separating out in the recycle system, utilize recycle pump to increase the flow velocity of circular flow and raising liquid in pipe, reduce evaporating capacity the pressure of liquid in heat transfer tube and wash away tube wall, the time of retard evaporation device coking wall built-up, the extension fixture cycle of operation, device scavenging period can reach 3 months once.The dense material of heat separating through wet cyclone in the present invention and carry out heat exchange from the cold liquid that wastewater disposal basin pumps into heating chamber, has reclaimed heat, does not produce calorific loss, has saved the energy.
System architecture of the present invention is simple, and technological operation is convenient, good waste water treatment effect, and realized the reasonable utilization of the energy, be applicable to suitability for industrialized production.
Brief description of the drawings
Fig. 1 is system architecture schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment the present invention will be further explained explanation, but protection scope of the present invention is not limited in this.
A kind of furfural waste-water treatment system as shown in Figure 1, comprise the wastewater disposal basin 1 connecting in turn, the first transferpump 2, the first solid-liquid separator 3, the outlet of the first solid-liquid separator 3 connects an entrance of interchanger 4, the interchanger 4 corresponding with this entrance exports and is connected with in turn recycle pump 5, heating chamber 6 and separate chamber 7, the lower outlet of separate chamber 7 connects the entrance of recycle pump 5 on the one hand, connect on the other hand the second transferpump 8, the second transferpump 8 outlets connect wet cyclone 9, the upper outlet of wet cyclone 9 connects recycle pump 5, the lower outlet of wet cyclone 9 connects interchanger 4 another entrances, interchanger 4 outlets corresponding with this entrance connect the second solid-liquid separator 10, the outlet of the second solid-liquid separator 10 connects wastewater disposal basin 1.
embodiment 1
Utilize system shown in Figure 1 to process the technique of furfural waste-water, waste water at the bottom of furfural primary tower tower is entered in wastewater disposal basin 1 and precipitates 2h, clear liquid after precipitation enters the first solid-liquid separator 3 by the first transferpump 2 and removes after impurity, entering heating chamber 6 by interchanger 4, recycle pump 5 again heats, the hydrothermal solution that heating chamber 6 produces enters separate chamber 7 and processes, the secondary steam that separate chamber 7 produces is delivered to hydrolysis post, the material that the lower outlet of separate chamber 7 produces enters heating chamber 6 heating evaporations by recycle pump 5, extracts a part simultaneously out and enters wet cyclone 9 by the second transferpump 8; The clear liquor that the upper outlet of wet cyclone 9 produces enters recycle pump 5 entrances and returns to heating chamber 6, and the dope that the lower outlet of wet cyclone 9 produces enters the second solid-liquid separator 10 after by interchanger 4 heat exchange and again after removal of impurities, enters in wastewater disposal basin 1; Wherein to export the flow velocity in liquids heating chamber heating tubulation be 5m/s to recycle pump 5, and the inventory that enters wet cyclone 9 by the second transferpump 8 is the 3wt% of separate chamber's 7 inlet feed amounts, and the primary steam pressure that heating chamber 6 heating need is 14kgf/cm
2, the secondary steam pressure that separate chamber 7 produces is 11kgf/cm
2.
embodiment 2
Utilize system shown in Figure 1 to process the technique of furfural waste-water, waste water at the bottom of furfural primary tower tower is entered in wastewater disposal basin 1 and precipitates 1 day, clear liquid after precipitation enters the first solid-liquid separator 3 by the first transferpump 2 and removes after impurity, entering heating chamber 6 by interchanger 4, recycle pump 5 again heats, the hydrothermal solution that heating chamber 6 produces enters separate chamber 7 and processes, the secondary steam that separate chamber 7 produces is delivered to hydrolysis post, the material that the lower outlet of separate chamber 7 produces enters heating chamber 6 heating evaporations by recycle pump 5, extracts a part simultaneously out and enters wet cyclone 9 by the second transferpump 8; The clear liquor that the upper outlet of wet cyclone 9 produces enters recycle pump 5 entrances and returns to heating chamber 6, and the dope that the lower outlet of wet cyclone 9 produces enters the second solid-liquid separator 10 after by interchanger 4 heat exchange and again after removal of impurities, enters in wastewater disposal basin 1; Wherein to export the flow velocity in liquids heating chamber heating tubulation be 4m/s to recycle pump 5, and the inventory that enters wet cyclone 9 by the second transferpump 8 is the 5wt% of separate chamber's 7 inlet feed amounts, and the primary steam pressure that heating chamber 6 heating need is 15kgf/cm
2, the secondary steam pressure that separate chamber 7 produces is 10kgf/cm
2.
embodiment 3
Utilize system shown in Figure 1 to process the technique of furfural waste-water, waste water at the bottom of furfural primary tower tower is entered in wastewater disposal basin 1 and precipitates 12h, clear liquid after precipitation enters the first solid-liquid separator 3 by the first transferpump 2 and removes after impurity, entering heating chamber 6 by interchanger 4, recycle pump 5 again heats, the hydrothermal solution that heating chamber 6 produces enters separate chamber 7 and processes, the secondary steam that separate chamber 7 produces is delivered to hydrolysis post, the material that the lower outlet of separate chamber 7 produces enters heating chamber 6 heating evaporations by recycle pump 5, extracts a part simultaneously out and enters wet cyclone 9 by the second transferpump 8; The clear liquor that the upper outlet of wet cyclone 9 produces enters recycle pump 5 entrances and returns to heating chamber 6, and the dope that the lower outlet of wet cyclone 9 produces enters the second solid-liquid separator 10 after by interchanger 4 heat exchange and again after removal of impurities, enters in wastewater disposal basin 1; Wherein to export the flow velocity in liquids heating chamber heating tubulation be 4m/s to recycle pump 5, and the inventory that enters wet cyclone 9 by the second transferpump 8 is the 4wt% of separate chamber's 7 inlet feed amounts, and the primary steam pressure that heating chamber 6 heating need is 14kgf/cm
2, the secondary steam pressure that separate chamber 7 produces is 10kgf/cm
2.
Claims (3)
1. a furfural waste-water treatment system, it is characterized in that, comprise the wastewater disposal basin connecting in turn, the first transferpump, the first solid-liquid separator, the outlet of the first solid-liquid separator connects an entrance of interchanger, the heat exchanger exit corresponding with this entrance is connected with recycle pump in turn, heating chamber and separate chamber, the lower outlet of separate chamber connects recycle pump on the one hand, connect on the other hand the second transferpump, the second transferpump outlet connects wet cyclone, the upper outlet of wet cyclone connects the entrance of recycle pump, the lower outlet of wet cyclone connects another entrance of interchanger, the heat exchanger exit corresponding with this entrance connects the second solid-liquid separator, the outlet of the second solid-liquid separator connects wastewater disposal basin.
2. furfural waste-water treatment system as claimed in claim 1, is characterized in that: described the first solid-liquid separator and the second solid-liquid separator are plate-and-frame filter press.
3. utilize system described in claim 1 or 2 to process the technique of furfural waste-water, it is characterized in that: waste water at the bottom of furfural primary tower tower is entered in wastewater disposal basin and precipitated, clear liquid after precipitation enters the first solid-liquid separator by the first transferpump and removes after impurity, pass through again interchanger, recycle pump enters heating chamber heating, the hydrothermal solution that heating chamber produces enters separate chamber and processes, the secondary steam that separate chamber produces is delivered to hydrolysis post, the isolated material of lower outlet of separate chamber enters heating chamber heating evaporation by recycle pump on the one hand, divide and enter wet cyclone by the second transferpump extraction unit on the other hand, the clear liquor that the upper outlet of wet cyclone produces enters pump entry and returns to heating chamber, and the dope that the lower outlet of wet cyclone produces enters the second solid-liquid separator after by interchanger and again after removal of impurities, enters in wastewater disposal basin, the wherein flow velocity > 3m/s in circulating-pump outlet liquids heating chamber, the second transferpump is extracted out and gone the inventory of wet cyclone is the 3-5wt% of separate chamber's inlet feed amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410368528.4A CN104129881A (en) | 2014-07-30 | 2014-07-30 | Furfural wastewater treatment system and process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410368528.4A CN104129881A (en) | 2014-07-30 | 2014-07-30 | Furfural wastewater treatment system and process |
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| CN104129881A true CN104129881A (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410368528.4A Pending CN104129881A (en) | 2014-07-30 | 2014-07-30 | Furfural wastewater treatment system and process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198150A (en) * | 2015-10-23 | 2015-12-30 | 上海毅知实业有限公司 | Reuse treatment process device for furfural wastewater |
| CN114273098A (en) * | 2021-12-29 | 2022-04-05 | 上海赛科石油化工有限责任公司 | System and method for separating polymer in acrylonitrile production process |
Citations (4)
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| US4898644A (en) * | 1988-05-02 | 1990-02-06 | Qo Chemicals, Inc. | Removal of volatile acids from aqueous solutions |
| CN101139333A (en) * | 2006-09-08 | 2008-03-12 | 刘祚希 | Process for comprehensive utilization of furfural waste water |
| CN101486524A (en) * | 2009-02-23 | 2009-07-22 | 吉林大学 | Comprehensive processing method for furfural production wastewater |
| CN103387319A (en) * | 2012-12-12 | 2013-11-13 | 黑龙江鑫达晟机械科技有限公司 | Method for treating waste water by using mechanical-compression evaporating crystallizer system |
-
2014
- 2014-07-30 CN CN201410368528.4A patent/CN104129881A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4898644A (en) * | 1988-05-02 | 1990-02-06 | Qo Chemicals, Inc. | Removal of volatile acids from aqueous solutions |
| CN101139333A (en) * | 2006-09-08 | 2008-03-12 | 刘祚希 | Process for comprehensive utilization of furfural waste water |
| CN101486524A (en) * | 2009-02-23 | 2009-07-22 | 吉林大学 | Comprehensive processing method for furfural production wastewater |
| CN103387319A (en) * | 2012-12-12 | 2013-11-13 | 黑龙江鑫达晟机械科技有限公司 | Method for treating waste water by using mechanical-compression evaporating crystallizer system |
Non-Patent Citations (1)
| Title |
|---|
| 毛燎原: "玉米芯"一步法"制取糠醛清洁生产工艺研究", 《中国博士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198150A (en) * | 2015-10-23 | 2015-12-30 | 上海毅知实业有限公司 | Reuse treatment process device for furfural wastewater |
| CN114273098A (en) * | 2021-12-29 | 2022-04-05 | 上海赛科石油化工有限责任公司 | System and method for separating polymer in acrylonitrile production process |
| CN114273098B (en) * | 2021-12-29 | 2024-04-26 | 上海赛科石油化工有限责任公司 | System and method for separating polymer in acrylonitrile production flow |
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Application publication date: 20141105 |