CN102976539A - Furfural production wastewater novel technology processing method - Google Patents
Furfural production wastewater novel technology processing method Download PDFInfo
- Publication number
- CN102976539A CN102976539A CN2011102619506A CN201110261950A CN102976539A CN 102976539 A CN102976539 A CN 102976539A CN 2011102619506 A CN2011102619506 A CN 2011102619506A CN 201110261950 A CN201110261950 A CN 201110261950A CN 102976539 A CN102976539 A CN 102976539A
- Authority
- CN
- China
- Prior art keywords
- waste water
- furfural
- water
- steam
- pump
- 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.)
- Pending
Links
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention belongs to the field of industrial production organic acid wastewater processing, and especially relates to a processing method of furfural production wastewater. The method has the advantages such as low land occupation, low equipment investment, simple process flow, easy operation, and less required operators. With the method, furfural production process wastewater zero discharging is realized, and no secondary pollution is caused, such that sewage charges are greatly reduced. With the method, water and steam recycling in furfural production is realized, and no secondary pollution is caused during the recycling process.
Description
Technical field
The present invention relates to industrial production organic acidity field of waste water treatment, especially the treatment process of furfural production waste water, present method takes full advantage of the useful component in the waste water under not affecting the front topic of furfural productive rate, realize the furfural production technology wastewater zero discharge, be applicable to any furfural production Enterprise Construction.
Background technology
Furfural production technology mostly adopts direct method, and catalyzer uses dilute sulphuric acid, the most of corn cob that uses of starting material, and what have also uses the agricultural waste materials such as corn stalk, cotton stalk, cotton seed hull, bagasse.Add dilute sulphuric acid after normally starting material being pulverized with pulverizer, mix with the nitration mixture machine and to close evenly, send in the hydrolyzer, lead to steam from the hydrolyzer bottom, take hydrolyzer formation aldehyde vapour out of with the furfural that steam obtains hydrolysis, aldehyde vapour forms stoste through after the condensation, stoste enters distillation tower and distills, the tower item steams furfural, water azeotrope, layering after the condensation of azeotropic composition, aldehyde is called a mao aldehyde mutually, and aqueous-phase reflux enters tower, discharges most of moisture at the bottom of the tower, the high boiling material that forms in acetic acid and the hydrolytic process, waste water at the bottom of the waste liquids such as low-boiling-point substance are furfural production technology waste water or are called the furfural tower.Collection aldehyde enters refining system and makes with extra care to get the finished product furfural after replenishing neutralization, produce the waste water such as water, a small amount of furfural in treating process.
In the processing wastewater that produces in the furfural production process, the waste water main component is acetic acid, organic high boiling material, low-boiling-point substance at the bottom of the furfural tower, a small amount of furfural and water-fast grease-like material, and its pH value is 2～3, COD concentration is high, generally about 16000～20000mg/l; The refining waste water main component that produces is water and a small amount of furfural, and COD concentration is generally 22000.At present, furfural waste-water is restricting the development of furfural industry always owing to its processing of reason that COD concentration is high, wastewater flow rate is large, little furfural producer can't the investment construction waste water disposal facility, even investment construction wastewater treatment equipment also because the processing costs of great number can't all be processed waste water, large producer also makes the furfural production cost up because the expense of wastewater treatment is higher.Many developed countries turn to developing country to buy the furfural product because its waste water is difficult to process not in its domestic production for this reason.Domestic furfural production waste water is processed and is mostly adopted biological contact oxidation process, at first with waste water with lime slurry neutralization, flocculation sediment, and then carry out anaerobism, aerobic treatment.This method has several more scabrous problems:
1, with in the lime slurry and after be dissolved in calcium salt in the water in anaerobic pond because rising meeting fouling in elastic filler of temperature, thereby reduce anaerobic sludge on filler adhesion amount and make gradually variation of anaerobic treatment effect, use the neutralization of yellow soda ash or sodium hydroxide instead processing cost is increased severely.
2, the nutritive substance of anerobe is less in the waste water, adds that the loss with waste water can reduce anaerobic sludge gradually in treating processes, can not treat to contain a large amount of nutritive substances such as carbohydrate in the industry waste water as wine processed, so mud needs to replenish in treating processes.
3, because anaerobic bacterium needs could process preferably organism at a certain temperature, therefore be not suitable for using in the Northeast of furfural abundant raw material, this also is the stagnant reason of the Northeast's furfural industry.
4, investment is large, floor space is large, and working cost is high, generally wants complete qualified discharge and need to carry out 2～3 grades of anaerobic treatment.Patent is arranged, and (Chinese patent CN200410011121.2) is mentioned with aldehyde vapour waste water being carried out adding in the diluted acid after the evaporation concentration and is used as complex acid.There is following problem in this method: can evaporate with water and produce secondary pollution thereby contain a large amount of acetic acid and a small amount of furfural acetic acid, furfural in the waste water evaporative process in the waste water, acetic acid, furfural can't be recycled utilization.
Summary of the invention
The new technology treatment process that the purpose of this invention is to provide a kind of furfural production waste water, large with waste water disposal facility investment in the solution furfural production, working cost is high, sewage after processing difficulty up to standard and the problem that easily causes secondary pollution, and can build in any furfural production producer, facility investment is less, and is simple to operate, working cost is low, do not affect the furfural productive rate, and the useful component in the waste water is taken full advantage of, really realize the furfural production technology wastewater zero discharge.
The object of the present invention is achieved like this, and the concrete grammar of the new technology treatment process of this furfural production waste water is as follows:
In effluent settling chamber with suspended substance in the waste water, Semen Maydis oil and throw out are removed, to go deimpurity clean low-temperature wastewater to squeeze into interchanger No. one time through lift pump, heat exchange is to approaching boiling, enter water tank, then squeeze into the waste water vapo(u)rization system, the primary steam of waste water and boiler is carried out heat exchange, and waste water evaporated, generation contains the secondary steam of acid, and in the waste water surge tank, carry out liquid level automatization control and reconcile, the flow of the outlet regulating valve control pump by reconciling waste water pump, secondary steam is passed into hydrolysis generation furfural in the hydrolysis kettle, to pass through from the primary steam of boiler the water of condensation that produces after the waste water vaporizer heated waste water separates with primary steam in steam separator, water of condensation keeps about 60% liquid level, the high pressure condensed water row mouth that steam separator produces automatically cuts down with canned-motor pump and joins, the keying of pump is controlled by the liquid level automatization, water of condensation is all intermittently squeezed into boiler and is recycled, the throw out and the suspended substance that produce in the settling tank enter boiler combustion, and the waste water that produces in the treating process directly enters furfural and just discharges vapo(u)rization system at the bottom of the tower;
The top hole pressure of the waste water pump of the new technology treatment process of described a kind of furfural production waste water is greater than the pressure of the secondary steam of vapo(u)rization system generation;
The present invention has the following advantages:
1., floor space is little, facility investment is few.Plant area only needs can install in a corner in existing furfural workshop, has solved the large shortcomings of facility floor space such as biological contact oxidation process settling tank, anaerobic pond, Aerobic Pond.Device just waste water vapo(u)rization system (waste water vaporizer, waste water dashpot), effluent settling chamber, steam separator, steam buffer tank, interchanger, waste water pump, softened water pump, compare the civil engineering facilities such as biological contact oxidation process and equipment less investment many.
2., simple, the processing ease of flow process, used operator are few.This invented technology flow process is simple, and whole-course automation control only needs the hydrolysis operator of workshop section regularly to patrol and examine without special messenger's operation during normal production run and gets final product.
3., can realize the furfural production technology wastewater zero discharge and can produce secondary pollution, saving wholesale effluent charge.This invention has realized water and steam recycling in the furfural production process, does not produce secondary pollution in the process of circulation; Moreover also the acetic acid that has burning to be worth in the waste water and grease etc. are used, and a large amount of acetic acid that contain in the secondary waste water steam and a small amount of furfural help the hydrolysis of raw material and the furfural in the recovery waste water, thereby realized the comprehensive utilization of waste water, turned waste into wealth; Steam and soft water carry out closed cycle and have saved a large amount of soft water manufacturing expenses.
4., low, the corrective maintenance of working cost safeguards that simple expense is low.Because the comprehensive utilization of steam makes just exhaustion point electricity when operation of this invention, working cost is equivalent to 1/9th of biological contact oxidation process working cost, and number of devices is few and simple, so the maintenance expense is lower.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Embodiment 1
Corn cob after raw material uses spring air-dry, its water-content is 20%.Be ground into the corn cob granule of 1～1.5cm after the dedusting of corn cob process vibratory screening apparatus with beater grinder, then be transported to mix in the sour car by lift and mix acid, acid concentration is 5%, remain on on the specific solid-to-liquid ratio with the acid amount, send in the hydrolysis kettle through rotary conveyor, the hydrolysis kettle volume is 12.5 cubic metres, adopt 3 still serial operations, fill and pass into secondary waste water steam at the bottom of the tower that pressure is 0.8MPa behind the hydrolysis kettle, hydrolysis temperature is 160～180 ℃, is hydrolyzed 3.5 hours.With the furfural stoste introducing subsequent handling that hydrolysis obtains, through extracting a hair aldehyde, hair aldehyde is intermittently made with extra care to get the commodity furfural.
Wastewater treatment: in effluent settling chamber with suspended substance in the waste water, Semen Maydis oil and throw out are removed, to go deimpurity clean low-temperature wastewater to squeeze into interchanger No. one time through lift pump, heat exchange is to approaching boiling, enter water tank, then squeeze into the waste water vapo(u)rization system, the primary steam of waste water and boiler is carried out heat exchange, and waste water evaporated, generation contains the secondary steam of acid, and in the waste water surge tank, carry out liquid level automatization control and reconcile, the flow of the outlet regulating valve control pump by reconciling waste water pump, secondary steam is passed in the hydrolysis kettle at 160～180 ℃ of lower hydrolysis generation furfurals, to pass through from the primary steam of boiler the water of condensation that produces after the waste water vaporizer heated waste water separates with primary steam in steam separator, water of condensation keeps about 60% liquid level, the high pressure condensed water row mouth that steam separator produces automatically cuts down with canned-motor pump and joins, the keying of pump is controlled by the liquid level automatization, water of condensation is all intermittently squeezed into boiler and is recycled, the throw out and the suspended substance that produce in the settling tank enter boiler combustion, and the waste water that produces in the treating process directly enters furfural and just discharges vapo(u)rization system at the bottom of the tower;
Furfural yield rises to 9～10%, and the every tabulation of wastewater treatment sees following table for details:
Furfural quality test result and GB 1926.1-88 set quota tables
If subsequent handling need to be produced sodium-acetate and can be added the soda ash Dichlorodiphenyl Acetate neutralize in this settling tank, this sodium acetate soln through operations such as filtration, decolouring, evaporation concentration, crystallizations after the final finished product sodium-acetate that generates.
Claims (2)
1. the new technology treatment process of a furfural production waste water, it is characterized in that: these treatment process concrete steps are as follows:
In effluent settling chamber with suspended substance in the waste water, Semen Maydis oil and throw out are removed, to go deimpurity clean low-temperature wastewater to squeeze into interchanger No. one time through lift pump, heat exchange is to approaching boiling, enter water tank, then squeeze into the waste water vapo(u)rization system, the primary steam of waste water and boiler is carried out heat exchange, and waste water evaporated, generation contains the secondary steam of acid, and in the waste water surge tank, carry out liquid level automatization control and reconcile, the flow of the outlet regulating valve control pump by reconciling waste water pump, secondary steam is passed into hydrolysis generation furfural in the hydrolysis kettle, to pass through from the primary steam of boiler the water of condensation that produces after the waste water vaporizer heated waste water separates with primary steam in steam separator, water of condensation keeps about 60% liquid level, the high pressure condensed water row mouth that steam separator produces automatically cuts down with canned-motor pump and joins, the keying of pump is controlled by the liquid level automatization, water of condensation is all intermittently squeezed into boiler and is recycled, the throw out and the suspended substance that produce in the settling tank enter boiler combustion, and the waste water that produces in the treating process directly enters furfural and just discharges vapo(u)rization system at the bottom of the tower.
2. the new technology treatment process of a kind of furfural production waste water according to claim 1 is characterized in that: the top hole pressure of waste water pump is greater than the pressure of the secondary steam of vapo(u)rization system generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102619506A CN102976539A (en) | 2011-09-06 | 2011-09-06 | Furfural production wastewater novel technology processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102619506A CN102976539A (en) | 2011-09-06 | 2011-09-06 | Furfural production wastewater novel technology processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102976539A true CN102976539A (en) | 2013-03-20 |
Family
ID=47850956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102619506A Pending CN102976539A (en) | 2011-09-06 | 2011-09-06 | Furfural production wastewater novel technology processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102976539A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826320A (en) * | 2018-06-26 | 2018-11-16 | 河南禾力能源股份有限公司 | A kind of furfuryl alcohol high-boiling components and Waste water concentrating liquid mixed combustion apparatus |
| CN114524592A (en) * | 2022-03-23 | 2022-05-24 | 北京奥科瑞丰新能源股份有限公司 | Flocculation biological treatment method and system for furfural production wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629151A (en) * | 2004-10-09 | 2005-06-22 | 刘显臣 | Process waste water discharging free method for the production of furfural |
| CN1872726A (en) * | 2006-06-07 | 2006-12-06 | 济南圣泉集团股份有限公司 | Method for treating wastewater from furfural production |
| CN101481189A (en) * | 2009-01-20 | 2009-07-15 | 大连理工大学 | Integrated process of furfural production as well as wastewater, waste slag and waste gas treatment |
-
2011
- 2011-09-06 CN CN2011102619506A patent/CN102976539A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629151A (en) * | 2004-10-09 | 2005-06-22 | 刘显臣 | Process waste water discharging free method for the production of furfural |
| CN1872726A (en) * | 2006-06-07 | 2006-12-06 | 济南圣泉集团股份有限公司 | Method for treating wastewater from furfural production |
| CN1923729A (en) * | 2006-06-07 | 2007-03-07 | 济南圣泉集团股份有限公司 | Method and system for treating furfural production waste water and method and system for furfural production |
| CN101481189A (en) * | 2009-01-20 | 2009-07-15 | 大连理工大学 | Integrated process of furfural production as well as wastewater, waste slag and waste gas treatment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826320A (en) * | 2018-06-26 | 2018-11-16 | 河南禾力能源股份有限公司 | A kind of furfuryl alcohol high-boiling components and Waste water concentrating liquid mixed combustion apparatus |
| CN114524592A (en) * | 2022-03-23 | 2022-05-24 | 北京奥科瑞丰新能源股份有限公司 | Flocculation biological treatment method and system for furfural production wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1872726A (en) | Method for treating wastewater from furfural production | |
| CN101302071B (en) | Method for processing palm oil waste water and use thereof | |
| CN102249498B (en) | Biochemical treatment method for waste water from small and medium-sized starch factories | |
| CN102992541B (en) | Method for simultaneously extracting iodine and fucoidin from salted kelp blanching wastewater | |
| CN103193366A (en) | Integrated treatment method of corn alcohol wastewater | |
| CN102260163B (en) | Method for recovering lactic acid from marigold fermentation wastewater | |
| CN102134139A (en) | Comprehensive control process of black liquor | |
| CN112939387A (en) | Calcium nitrate coupled sludge thermokalite hydrolysis treatment method and system | |
| CN102690031A (en) | Treatment method for recycling potato starch production factory wastewater | |
| CN102198997B (en) | Treatment process method for wastewater from abscisic acid production | |
| CN107721104A (en) | Method and device for treating sludge in water supply plant | |
| CN203976576U (en) | Kitchen waste water treatment system | |
| CN103466791B (en) | A kind of citric acid wastewater pre-acidified treatment process of improvement | |
| CN102976539A (en) | Furfural production wastewater novel technology processing method | |
| CN113214857A (en) | Biomass two-stage hydrothermal energy production circulating system and method | |
| CN102174588B (en) | Methane production method by adopting cellulosic ethanol byproduct as main raw material | |
| CN208684795U (en) | A kind of organic fertilizer joint production | |
| CN205893031U (en) | Mud or organic rubbish resource cyclic utilization system | |
| CN1272259C (en) | New technique of no pollution discharge for treating black liquor from papermaking | |
| CN104496115A (en) | Draft beer plant wastewater treatment method and treatment device | |
| CN209537034U (en) | A kind of pretreatment system of oily waste water | |
| CN208712498U (en) | A kind of waste harmless treatment device | |
| CN203700850U (en) | Cotton linter KOH stewing and pulping system | |
| CN206219346U (en) | A kind of Texaco gasifier buck resource utilization system | |
| CN206109165U (en) | Novel river course sludge treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130320 |