CN205420042U - Retrieval and utilization treatment process device of furfural waste water - Google Patents
Retrieval and utilization treatment process device of furfural waste water Download PDFInfo
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- CN205420042U CN205420042U CN201520824286.5U CN201520824286U CN205420042U CN 205420042 U CN205420042 U CN 205420042U CN 201520824286 U CN201520824286 U CN 201520824286U CN 205420042 U CN205420042 U CN 205420042U
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Abstract
The utility model discloses a retrieval and utilization treatment process device of furfural waste water, the wastewater outlet of the device of hydrolysising, topping plant, fractional distillation apparatus and rectifier unit communicates the wastewater disposal basin, and the wastewater disposal basin intercommunication takes off thick machinery, takes off the wastewater outlet that thick machinery has the separation, generate the device intercommunication MVR technical process equipment of sodium acetate solution, MVR technical process equipment has sodium acetate export and steam outlet, the condensing equipment intercommunication furfural production system of steam. The utility model discloses in 1 ton of waste water can produce 60 degrees electricity, belong to energy -conserving apparatus for producing.
Description
Technical field
This utility model relates to the treatment facility of produced waste water in furfural production line.
Background technology
Furfural is the large chemical product for export of China, and product quality is in advanced international standard, the most promising.But in recent years, environment protects problem has become the bottleneck of restriction the sector development.The polluter of furfural industry is mainly industrial wastewater, belongs to the organic wastewater being difficult to improvement；The waste water of most furfural mills processes and mostly uses biological contact oxidation process, first by waste water lime water neutralization, flocculation sediment, carries out anaerobism, Aerobic Process for Treatment the most again；But owing to investment is big, floor space is wide, operating cost is high, and it is extremely difficult to qualified discharge, makes a lot of producer face the predicament of suspending operations for consolidation.
The feature of furfural production waste water:
The waste water of furfural mill is mainly in still-process generation, and it includes the tower top waste water of waste water and dehydrating tower at the bottom of the tower of topping still；Containing 40 gas chromatographies such as acetic acid, furfural and alcohols, aldehydes, ketone, esters, organic acid in waste water, wherein based on acetic acid, furfural and there is substantial amounts of high boiling point organic compound；PH value is low, for 2-3；COD concentration is high, and typically at 16000-20000mg/l, dustiness is high；But it is relatively low that its BOD compares ratio, about about 2500-3000mg/l, so the biodegradability of waste water is the best.
MVR is the abbreviation of steam mechanical recompression (mechanicalvaporrecompression).Mvr is the energy re-using the indirect steam that its own produces, thus reduces a power-saving technology of the demand of the energy to external world.Its work process of vaporizer is to be compressed through compressor by the steam of low-temperature level, and temperature, pressure improve, and heat content increases, and condense subsequently into heat exchanger, to make full use of the latent heat of steam.Steam to be discarded just is fully utilized, and has reclaimed latent heat, improves again the thermal efficiency, and the economy of raw steam is equivalent to 30 effects of multiple-effect evaporation.
Summary of the invention
Utility model purpose:
This utility model provides the overall treatment of waste water and the device of recycling and operation process thereof produced in each step of a kind of furfural production line.
Technical scheme:
The treatment for reuse device of a kind of furfural waste-water that this utility model provides and technique thereof, the waste water produced in hydrolysis in the production line of the products such as furfural, fore-running, fractional distillation and rectification is pooled in wastewater disposal basin, thick process is taken off through de-thick machinery, in the waste water of de-thick separation, (containing acetic acid) adds sodium carbonate, reach neutrality, generate sodium acetate (NaAc) solution.Using MVR technical finesse equipment (containing heating apparatus, pressue device, reboiler) again, carry out low-temperature evaporation compression process, reclaim sodium acetate, the condensed condensed water of steam being evaporated all can be back to use in furfural production system.
The i.e. wastewater outlet of hydrolysis device, topping plant, fractionating device and rectifier unit connects wastewater disposal basin, and the de-thick machinery of wastewater disposal basin connection, de-thick machinery has the wastewater outlet of separation；Generate the device connection MVR technical finesse equipment of sodium acetate solution；MVR technical finesse equipment has sodium acetate outlet and steam (vapor) outlet；The condensing unit connection furfural production system of steam.
Described MVR technology uses low temperature 86-90 DEG C, increases 0.03-0.08MPa than atmospheric pressure and is evaporated gasification, and evaporation generating is in furfural production system.1 ton of water produces 60 degree of electricity, belongs to energy-saving process units.
The waste water that each step produces is as follows:
(1) furfural evaporates: from dilute aldehyde liquid of hydrolysis, containing furfural 4-6%, and containing low-boiling-point substances such as formic acid, methanol, acetaldehyde, uses distillation purification techniques to purify, produce the organic wastewater containing furfural in this process, be mainly composed of acetic acid.
(2) Desultwater Station: for meeting the water quality requirement of boiler feedwater, arranges Desultwater Station and former water is carried out desalination process, and waste water is essentially from zwitterion resin regeneration.
(3) workshop appliance and terrace flushing waste water, major pollutants are SS(float), COD and BOD5.
(4) corn cob hydrolytic residue filtrate, major pollutants are COD, BOD5 and sulfate ion.Corn cob hydrolytic residue moisture content 40-50%.
(5) living and chemically examine waste water, major pollutants are SS, COD and BOD5.
(6) other waste water: other waste water is essentially from boiler periodical blowdown water, water in water circulating system with water and life chemical examination waste water etc..Beneficial effect:
The main feature of furfural waste-water reuse treatment process device:
1) floor space is little, equipment investment is few, uses wide；Using this technique to be not required to increase plant area, and do not affect original production technology, it is only necessary to make some in existing production technology and change, taking up an area space only needs a corner in existing furfural workshop；
2) simple flow, simple to operate, all use instrument automatic control, it is not necessary to increase operator, former rectification workman timing patrol and examine and just can meet production；
3) realize furfural production waste water zero-emission, furfural waste-water will have acetic acid and the Lipid use of fuel value, and not only increase the burning of boiler, moreover it is possible to reduce the flue gas pollution to air；
4) due to waste water re-evaporation, the hydrolysis for raw material of a large amount of acetic acid in waste water can be reclaimed, decrease the consumption of sulphuric acid in production；A small amount of furfural in waste water is recycled simultaneously, and add raw material goes out aldehyde rate, reduces production cost；
5) in traditional handicraft, Boiler Steam is directly entered after hydrolyzer enters tower and becomes waste water, steam cannot be recycled, this technique uses Boiler Steam indirect evaporation waste water, steam just becomes back boiler utilization again after condensed water, not only reduce the process load of boiler soft water, reducing processing cost, and save a substantial amounts of water consumption, average furfural per ton can save 5 ~ 10 tons of water consumptions.
6) operating cost is low, and equipment maintenance is simple.
Accompanying drawing explanation
Fig. 1 is a technological process of the present utility model and process unit schematic diagram.
Detailed description of the invention
The reuse treatment process device of furfural waste-water as shown in Figure 1, is pooled to the waste water produced in hydrolysis, fore-running, fractional distillation and the rectification in the production line of the products such as furfural in wastewater disposal basin, and waste water first passes through de-thick machinery and takes off thick process；The waste water of de-thick separation adds sodium carbonate so that it is reach neutral, generate sodium acetate solution；Using MVR technical finesse equipment again, carry out low-temperature evaporation compression process, reclaim sodium acetate, the condensed condensed water of steam being evaporated all can be back to use in furfural production system.
MVR technology therein uses low temperature 86-90 DEG C, and the air pressure increasing 0.04-0.07MPa than atmospheric pressure is evaporated gasification.
The steam that low-temperature evaporation produces generates electricity, and institute's electricity is in furfural production water system.
Claims (2)
1. the reuse treatment process device of a furfural waste-water, it is characterised in that: hydrolysis device, topping plant, fractionating device connect wastewater disposal basin with the wastewater outlet of rectifier unit, and the de-thick machinery of wastewater disposal basin connection, de-thick machinery has the wastewater outlet of separation；Generate the device connection MVR technical finesse equipment of sodium acetate solution；MVR technical finesse equipment has sodium acetate outlet and steam (vapor) outlet；The condensing unit connection furfural production system of steam.
2. the reuse treatment process device of furfural waste-water as claimed in claim 1, it is characterised in that: MVR technical finesse equipment contains heating apparatus, pressue device, reboiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824286.5U CN205420042U (en) | 2015-10-23 | 2015-10-23 | Retrieval and utilization treatment process device of furfural waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520824286.5U CN205420042U (en) | 2015-10-23 | 2015-10-23 | Retrieval and utilization treatment process device of furfural waste water |
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| CN205420042U true CN205420042U (en) | 2016-08-03 |
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| CN201520824286.5U Active CN205420042U (en) | 2015-10-23 | 2015-10-23 | Retrieval and utilization treatment process device of furfural waste water |
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Cited By (1)
| 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 |
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Cited By (1)
| 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 |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200434 Hongkou District Memorial Road, Hongkou District, Shanghai, room 1401, room 8 Patentee after: Shanghai Yizhi industrial Limited by Share Ltd Address before: 200434 Hongkou District Memorial Road, Hongkou District, Shanghai, room 1401, room 8 Patentee before: Shanghai Yizhi Enterprise Co., Ltd. |