CN109912730A - The recyclable device and recovery method of hemicellulose in a kind of concentration lye - Google Patents
The recyclable device and recovery method of hemicellulose in a kind of concentration lye Download PDFInfo
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- CN109912730A CN109912730A CN201910208746.4A CN201910208746A CN109912730A CN 109912730 A CN109912730 A CN 109912730A CN 201910208746 A CN201910208746 A CN 201910208746A CN 109912730 A CN109912730 A CN 109912730A
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Abstract
The present invention relates to the recyclable devices and recovery method of hemicellulose in a kind of concentration lye, the input terminal of cartridge filter is connected to alkali liquor concentration waste pipe, the input terminal of the extraordinary feed separation film device of output end connection first of cartridge filter, for the concentrated solution outlet of first extraordinary feed separation film device by the first water inlet of pipeline connection the first relaying water tank, the permeate outlet of the first extraordinary feed separation film device is connected to the water inlet of net lye collecting tank by pipeline；The water outlet of first relaying water tank is connected to the input terminal of desalter by pipeline；The permeate outlet of desalter is by the third water inlet of pipeline connection the first relaying water tank, and for the concentrated solution outlet of desalter by pipeline connection neutralization pond, the water outlet of neutralization pond passes through the input terminal that pipeline is connected to drying equipment.The beneficial effects of the present invention are: realizing that hemicellulose extracts recycling, influence of the hemicellulose to viscose rayon product quality is reduced, while realizing and turns waste into wealth, improves the efficiency of enterprise.
Description
Technical field
The present invention relates to alkali dense contracting liquid processing method more than adhesive application industry, has and be related to hemicellulose in a kind of concentration lye
The recyclable device and recovery method of element.
Background technique
Remaining alkali dense contracting liquid alkaline degree is low, and half fiber content is high, can not reuse.If in line, high COD will be brought to sewage plant
Pressure.Hemicellulose is the heteromultimer being made of several different types of monosaccharide, and the 50% of total amount is accounted in lignum,
It is incorporated in the surface of cellulose microfibers, and is connected with each other, these fibers constitute hard cell net interconnected
Network.Hemicellulose is the important composition ingredient of biomass, and Potential Comprehensive Utilization is big, can be translated into high added value, polynary
The product of change.With the sharply reduction of the increasingly depleted and the World Forests area of petroleum resources, using agricultural crop straw as representative
Non-wood fibrous raw material becomes people and researches and develops the hot spot utilized.The whole world produces a large amount of stalk, predominantly wheat every year
Grass, straw, sugarcane and corn stover etc..Hemicellulose as a kind of reproducible green chemical can be widely applied to chemistry,
The industries such as food, papermaking have wide Utilization prospects.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of recovery methods of hemicellulose in concentration lye, solve to mention
The alkali and water resource in waste liquid can not be comprehensively utilized using bring environmental pressure by fetching the remaining alkali collection concentrate of receipts, be reduced useless
Water discharge meets environmental protection requirement, and recycling hemicellulose is further processed, and increases Business Economic Benefit.
The technical scheme to solve the above technical problems is that the recycling of hemicellulose fills in a kind of concentration lye
It sets, including cartridge filter, the input terminal of the cartridge filter is connected to alkali liquor concentration waste pipe, the cartridge filter
The input terminal of the extraordinary feed separation film device of output end connection first, the concentrate of the described first extraordinary feed separation film device go out
First water inlet of the mouth by pipeline connection the first relaying water tank, the permeate outlet of the described first extraordinary feed separation film device
The water inlet of net lye collecting tank is connected to by pipeline, the second water inlet of the first relaying water tank is connected to by pipeline to be softened
Water tank；The water outlet of the first relaying water tank is connected to the input terminal of desalter by connecting pipe；The desalter
Permeate outlet is connected to the third water inlet of the first relaying water tank by pipeline, and the concentrated solution outlet of the desalter is logical
Piping is connected to neutralization pond, and the neutralization pond is connected to acid solution input pipe, and the water outlet of the neutralization pond is connected to drying by pipeline
The output end of the input terminal of equipment, the drying equipment connects hemicellulose salt collecting box.
The beneficial effects of the present invention are: successively passing through the first special type by the filtered alkali liquor concentration waste material of cartridge filter
The separation of feed separation film device, first relaying water tank in dilution, desalter separation concentration after, in neutralization pond with acid
It neutralizes, then passes through the drying of drying equipment, realize that hemicellulose extracts recycling, reduce hemicellulose to viscose rayon product
The influence of quality, while realizing and turn waste into wealth, improve the efficiency of enterprise.
Based on the above technical solution, the present invention can also be improved as follows.
It further, further include the PH detection control equipment being monitored to the pH value in the neutralization pond and setting in institute
The operated pneumatic valve on acid solution input pipe is stated, the PH detection control equipment is electrically connected with the operated pneumatic valve, the PH detection control
Control equipment is according to the opening and closing of the pH value adjustment operated pneumatic valve detected.
Beneficial effect using above-mentioned further scheme is: detecting control equipment by PH and carries out to the pH value in neutralization pond
Detection, the unlatching of operated pneumatic valve is adjusted according to the structure of detection, so that the additional amount of calculation is adjusted, it is easy to control and accurate, it is ensured that
Neutralization improves the production quantity of hemicellulose salt in hemicellulose salting liquid.
Further, the drying equipment is horizontal spray drying device.
Beneficial effect using above-mentioned further scheme is: using horizontal double of cellulosate solution of spray drying device and
Xining is dry, and drying efficiency is high.
Further, be equipped between the first relaying water tank and the desalter the second extraordinary feed separation film device and
Second relaying water tank, the connecting pipe include the first connecting pipe, the second connecting pipe and third connecting pipe, described first
The water outlet of water tank is relayed by the input terminal of the extraordinary feed separation film device of the first connecting pipe connection second, described second is special
The concentrated solution outlet of kind of feed separation film device is by the water inlet of the second connecting pipe connection the second relaying water tank, and described second
The water outlet for relaying water tank is connected to the input terminal of desalter by third connecting pipe, and the described second extraordinary feed separation film is set
Standby permeate outlet is connected to the water inlet of net lye collecting tank by pipeline.
Beneficial effect using above-mentioned further scheme is: passing through the extraordinary feed separation equipment of setting second and the second relaying
The setting of water tank can improve the concentration of dealkalize concentrate, to improve the production rate of hemicellulose.
To solve the above problems, the present invention also provides a kind of recovery method of hemicellulose in concentration lye, use is above-mentioned
The recyclable device of hemicellulose carries out the recycling of hemicellulose in the concentration lye, comprising the following steps:
Step 1, pretreatment of raw material: alkali liquor concentration waste liquid is delivered to cartridge filter by alkali liquor concentration waste pipe and carries out
Filtering；
Step 2 isolates reason: entering the first extraordinary feed separation film device through concentrate filtered in step 1
It is separated, isolates high light buck and dealkalize concentrate, the dealkalize concentrate isolated enter in the first relaying water tank, to
Injection softened water dilution in dealkalize concentrate in first relaying water tank；
Concentration: step 3 enters in desalter through dealkalize concentrated solution diluted in step 2, isolates height
Concentration concentrate and permeate；
Neutralisation treatment: step 4 is added acid solution, obtains hemicellulose after neutralization in the concentrate isolated in through step 3
Plain salting liquid；
Step 5 is dried: hemicellulose salting liquid being delivered in drying equipment and carries out desiccation, is contained after dried flower
Water rate is the hemicellulose of 1%-10%.
Beneficial effect using the above scheme is: other process reuse is used for after remaining alkali dense contracting liquid recycle of alkali liquor；Meanwhile this
Method is extracted by hemicellulose and is recycled, and influence of the hemicellulose to viscose rayon product quality is reduced；Remaining alkali circulation comprehensive
It is sold using recycling hemicellulose is extracted as byproduct, realizing turns waste into wealth, and improves the efficiency of enterprise.
Further, it enters in the second extraordinary feed separation film device and carries out by diluted solution in the first relaying water tank
Further separation enters in the desalter by further isolated dealkalize concentrate.
Beneficial effect using above-mentioned further scheme is: further increasing dealkalize by the second extraordinary feed separation equipment
The concentration of concentrate, to improve the production rate of hemicellulose.
Further, in the step 3, the permeate isolated enter in the first relaying water tank to dealkalize concentrate into
Row dilution.
Beneficial effect using above-mentioned further scheme is: the permeate isolated being utilized again, improves the benefit of lye
With rate.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In attached drawing, parts list represented by the reference numerals are as follows:
1, cartridge filter, 2, alkali liquor concentration waste pipe, the 3, first extraordinary feed separation film device, the 4, first relaying water
Case, 5, net lye collecting tank, 6, softening water tank, 7, desalter, 8, neutralization pond, 9, acid solution input pipe, 10, operated pneumatic valve, 11,
Horizontal spray drying device, the 12, second extraordinary feed separation film device, the 13, second relaying water tank.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, a kind of embodiment of the invention includes cartridge filter 1, the input terminal of the cartridge filter 1 connects
Logical alkali liquor concentration waste pipe 2, in an embodiment of the present invention, alkali liquor concentration waste material are nanofiltration concentrate, are papermaking or preparation
Liquid Residue after rubber product, the acid added in neutralization pond 8 are the concentrated sulfuric acid, raw material specification: alkali concentration is about in alkali liquor concentration waste material
25-70g/L, hemicellulose level about 40-115g/L；The extraordinary feed separation of output end connection first of the cartridge filter 1
(extraordinary feed separation film device is the state of the art to film device 3, and principle is to utilize the extraordinary feed separation film in equipment
Solution is separated, including device housings and the extraordinary feed separation film being located in device housings, on the device housings
It exports and uses equipped with the input terminal for being connected to external liquid to be filtered pipeline, the permeate for liquid after filtering to be discharged
In the discharge stoste concentrated solution outlet containing a large amount of residues remaining after filtering) input terminal, the first extraordinary material point
Water inlet of the concentrated solution outlet by pipeline connection the first relaying water tank 4 from film device 3, the described first extraordinary feed separation film
The permeate outlet of equipment 3 is connected to the first water inlet of net lye collecting tank 5 by pipeline, and described first relays the of water tank 4
Two water inlets are connected to softening water tank 6 by pipeline, and softening water tank 6 is provided with soft water；The water outlet of the first relaying water tank 4 is logical
Cross the input terminal of the extraordinary feed separation film device 12 of the first connecting pipe connection second, the described second extraordinary feed separation film device
For 12 concentrated solution outlet by the water inlet of the second connecting pipe connection the second relaying water tank 13, described second relays water tank 13
By third pipeline connection desalter 7, (desalter 7 is the state of the art to water outlet, mainly removes water removal intermediate ion
The salt of state reaches pure water, and structure does not do specific description herein) input terminal；The desalter 7 it is saturating
The third water inlet that liquid outlet is connected to the first relaying water tank 4 by pipeline is crossed, the concentrated solution outlet of the desalter 7 is logical
Piping is connected to neutralization pond 8, and the neutralization pond 8 is connected to acid solution input pipe 9, and the water outlet of the neutralization pond 8 is connected to by pipeline
The output end of the input terminal of drying equipment, the drying equipment connects hemicellulose salt collecting box.
In the present embodiment, successively pass through the first extraordinary material point by the filtered alkali liquor concentration waste material of cartridge filter 1
After separation from film device 3, the dilution in the first relaying water tank 4, the separation concentration of desalter 7, in neutralization pond 8 and in acid
With, then pass through drying equipment drying, realize hemicellulose extract recycling, reduce hemicellulose to viscose rayon product matter
The influence of amount, while realizing and turn waste into wealth, improves the efficiency of enterprise, passes through the extraordinary feed separation equipment of setting second and the
The setting of two relaying water tanks 13 can improve the concentration of dealkalize concentrate, to improve the production rate of hemicellulose.
It in an embodiment of the present invention, further include that the PH detection control being monitored to the pH value in the neutralization pond 8 is set
Operated pneumatic valve 10 standby and being arranged on the acid solution input pipe 9, the PH detection control equipment and the operated pneumatic valve 10
Electrical connection, the PH detection control equipment are examined according to the opening and closing of the pH value adjustment operated pneumatic valve 10 detected by PH
Observing and controlling control equipment detects the pH value in neutralization pond 8, the unlatching of operated pneumatic valve 10 is adjusted according to the structure of detection, to adjust
The additional amount calculated is saved, it is easy to control and accurate, it is ensured that neutralization improves the generation of hemicellulose salt in hemicellulose salting liquid
Amount.Flowmeter is additionally provided on the embodiment of the present invention, the acid solution input pipe 9, the flowmeter and PH detection control
Equipment electrical connection, control flowmeter realize the additive amount of acid.
Preferably, the drying equipment is that (horizontal spray drying device 11 is this field to horizontal spray drying device 11
The prior art, there is a large amount of device products in the prior art, and specific structure does not specifically describe herein), using horizontal spraying
Drying equipment 11 is dry to half cellulosate solution and Xining, and drying efficiency is high.
Invention additionally discloses a kind of recovery methods of hemicellulose in concentration lye, using in concentration lye described above
The recyclable device of hemicellulose carries out the recycling of hemicellulose, comprising the following steps:
Step 1, pretreatment of raw material: alkali liquor concentration waste liquid by alkali liquor concentration waste pipe 2 be delivered to cartridge filter 1 into
Row filtering；
Separating treatment: step 2 enters the first extraordinary feed separation film device 3 through concentrate filtered in step 1
It is separated, isolates high light buck and dealkalize concentrate, the dealkalize concentrate isolated enter in the first relaying water tank 4,
Injection softened water dilution in dealkalize concentrate into the first relaying water tank 4；First relaying water tank 4 by diluted solution into
Enter into the second extraordinary feed separation film device 12 and further separated, by further isolated dealkalize concentrate into
Enter into the desalter 7；
Concentration: step 3 is entered in desalter 7 through dealkalize concentrated solution diluted in step 2, is isolated
High concentration concentrate and permeate, the permeate isolated are entered in the first relaying water tank 4 and are diluted to dealkalize concentrate；
Neutralisation treatment: step 4 is added acid solution, obtains hemicellulose after neutralization in the concentrate isolated in through step 3
Plain salting liquid；
Step 5 is dried: hemicellulose salting liquid being delivered in drying equipment and carries out desiccation, is contained after dried flower
Water rate is the hemicellulose of 1%-10%.
Other process reuse is used for more than this method after alkali dense contracting liquid recycle of alkali liquor；Meanwhile this method is mentioned by hemicellulose
Receipts are fetched, influence of the hemicellulose to viscose rayon product quality is reduced；Remaining alkali circulation comprehensive utilizes extraction recycling hemicellulose
Element is sold as byproduct, and realizing turns waste into wealth, and improves the efficiency of enterprise；The permeate isolated is utilized again, is mentioned
The utilization rate of high lye.
The present invention passes through the first extraordinary feed separation film device 12 of extraordinary feed separation film device 3, second and horizontal spraying
Drying equipment 11 separates remaining alkali and hemicellulose, and the weak lye that system generates can carry out soda balance reuse；It extracts
Hemicellulose is dried to powder, reaches requirement of the market to hemicellulose product quality by hemicellulose drying device, thus will
Hemicellulose forms byproduct.Sodium hydroxide containing 30-40g/L in remaining alkali dense contracting liquid alkaline liquid is used for other process after recycling
Reuse；Meanwhile this project is extracted by hemicellulose, reduces influence of the hemicellulose to viscose rayon product quality, remaining alkali
Using hemicellulose fibers element is extracted as byproduct sale, realize turns waste into wealth circulation comprehensive, improves the efficiency of enterprise.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. the recyclable device of hemicellulose in a kind of concentration lye, which is characterized in that including cartridge filter (1), the security personnel
The input terminal of filter (1) is connected to alkali liquor concentration waste pipe (2), and the output end connection first of the cartridge filter (1) is special
The concentrated solution outlet of the input terminal of kind feed separation film device (3), the described first extraordinary feed separation film device (3) passes through pipeline
The permeate outlet of first water inlet of the first relaying water tank (4) of connection, the described first extraordinary feed separation film device (3) passes through
Pipeline is connected to the water inlet of net lye collecting tank (5), and the second water inlet of first relaying water tank (4) is connected to soft by pipeline
Change water tank (6)；The input terminal that the water outlet of first relaying water tank (4) passes through pipeline connection desalter (7)；The desalination
The permeate outlet of equipment (7) is connected to the third water inlet of first relaying water tank (4) by connecting pipe, and the desalination is set
The concentrated solution outlet of standby (7) is by pipeline connection neutralization pond (8), neutralization pond (8) connection acid solution input pipe (9), it is described in
The input terminal of drying equipment is connected to by pipeline with the water outlet of pond (8), the output end of the drying equipment connects hemicellulose
Salt collecting box.
2. the recyclable device of hemicellulose in a kind of concentration lye according to claim 1, which is characterized in that further include pair
The PH detection control equipment and be arranged on the acid solution input pipe (9) that pH value in the neutralization pond (8) is monitored
Operated pneumatic valve (10), the PH detection control equipment are electrically connected with the operated pneumatic valve (10), the PH detection control equipment root
According to the opening and closing of the pH value adjustment operated pneumatic valve (10) detected.
3. the recyclable device of hemicellulose in a kind of concentration lye according to claim 1, which is characterized in that the drying
Equipment is horizontal spray drying device (11).
4. the recyclable device of hemicellulose, feature exist in a kind of concentration lye according to any one of claims 1 to 3
In being equipped with the second special type feed separation film device (12) and the between first relaying water tank (4) and the desalter (7)
Two relayings water tank (13), the connecting pipe include the first connecting pipe, the second connecting pipe and third connecting pipe, and described the
The water outlet of one relaying water tank (4) is connected to the input terminal of the second extraordinary feed separation film device (12) by the first connecting pipe,
The concentrated solution outlet of described second extraordinary feed separation film device (12) passes through the second connecting pipe connection the second relaying water tank
(13) water outlet of water inlet, second relaying water tank (13) passes through the defeated of third connecting pipe connection desalter (7)
Enter end, the permeate of the described second extraordinary feed separation film device (12), which is exported, is connected to net lye collecting tank (5) by pipeline
Water inlet.
5. the recovery method of hemicellulose in a kind of concentration lye, which is characterized in that using such as any one of Claims 1-4 institute
The recyclable device of hemicellulose carries out the recycling of hemicellulose in the concentration lye stated, comprising the following steps:
Step 1, pretreatment of raw material: alkali liquor concentration waste liquid by alkali liquor concentration waste pipe (2) be delivered to cartridge filter (1) into
Row filtering；
Step 2 isolates reason: through concentrate filtered in step 1 enter the first extraordinary feed separation film device (3) into
High light buck and dealkalize concentrate are isolated in row separation, and the dealkalize concentrate isolated enters in the first relaying water tank (4),
Injection softened water dilution in dealkalize concentrate into the first relaying water tank (4)；
Concentration: step 3 enters in desalter (7) through dealkalize concentrated solution diluted in step 2, isolates height
Concentration concentrate and permeate；
Neutralisation treatment: step 4 is added acid solution, hemicellulose salt is obtained after neutralization in the concentrate isolated in through step 3
Solution；
Step 5 is dried: hemicellulose salting liquid being delivered in drying equipment and carries out desiccation, obtains moisture content after dried flower
For the hemicellulose of 1%-10%.
6. the recovery method of hemicellulose in a kind of concentration lye according to claim 5, which is characterized in that the step
In two, the first relaying water tank (4) enter in the second extraordinary feed separation film device (12) by diluted solution carry out into
The separation of one step, enters in the desalter (7) by further isolated dealkalize concentrate.
7. the recovery method of hemicellulose in a kind of concentration lye according to claim 5, which is characterized in that the step
In three, the permeate isolated is entered in the first relaying water tank (4) and is diluted to dealkalize concentrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910208746.4A CN109912730A (en) | 2019-03-19 | 2019-03-19 | The recyclable device and recovery method of hemicellulose in a kind of concentration lye |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910208746.4A CN109912730A (en) | 2019-03-19 | 2019-03-19 | The recyclable device and recovery method of hemicellulose in a kind of concentration lye |
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| US20060029702A1 (en) * | 2004-08-06 | 2006-02-09 | Grain Processing Corporation | Continuous aqueous process for the isolation of hemicellulose from corn hulls and other plant hulls |
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| CN103572635A (en) * | 2013-05-28 | 2014-02-12 | 上海凯鑫分离技术有限公司 | Processing and recovering process of chemical fiber pulp cellulose alkali pressed liquor |
| CN104311702A (en) * | 2014-11-07 | 2015-01-28 | 宜宾雅泰生物科技有限公司 | Method for extracting hemicellulose from viscose squeezing alkali liquor |
| CN107572697A (en) * | 2017-09-26 | 2018-01-12 | 杭州蓝然环境技术股份有限公司 | A kind of viscose rayon spent lye resource utilization method |
| CN109021146A (en) * | 2018-08-01 | 2018-12-18 | 辽宁莱特莱德环境工程有限公司 | For squeezing the method and device thereof of spent lye recycling in production process of viscose fiber |
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2019
- 2019-03-19 CN CN201910208746.4A patent/CN109912730A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060029702A1 (en) * | 2004-08-06 | 2006-02-09 | Grain Processing Corporation | Continuous aqueous process for the isolation of hemicellulose from corn hulls and other plant hulls |
| CN103572635A (en) * | 2013-05-28 | 2014-02-12 | 上海凯鑫分离技术有限公司 | Processing and recovering process of chemical fiber pulp cellulose alkali pressed liquor |
| CN103349909A (en) * | 2013-07-24 | 2013-10-16 | 宜宾海丝特纤维有限责任公司 | Post-processing method for squeezed alkali liquid in diffusion dialysis recycling viscose manufacture |
| CN104311702A (en) * | 2014-11-07 | 2015-01-28 | 宜宾雅泰生物科技有限公司 | Method for extracting hemicellulose from viscose squeezing alkali liquor |
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Address after: 843300 East 755 Wei2 Road, No. 2 Industrial Park, Alar City, Xinjiang Uygur Autonomous Region Applicant after: Alar Zhongtai Textile Technology Co.,Ltd. Applicant after: XIN JIANG ZHONG TAI CHEMICAL Co.,Ltd. Address before: 843300 East 755 Wei2 Road, No. 2 Industrial Park, Alar City, Xinjiang Uygur Autonomous Region Applicant before: ALAER FULIDA FIBER Co.,Ltd. Applicant before: XIN JIANG ZHONG TAI CHEMICAL Co.,Ltd. |
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Application publication date: 20190621 |