CN102719288A - Heavy oil or diesel oil synthesized from papermaking waste liquid and method for treating papermaking waste liquid - Google Patents
Heavy oil or diesel oil synthesized from papermaking waste liquid and method for treating papermaking waste liquid Download PDFInfo
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- CN102719288A CN102719288A CN201210000038XA CN201210000038A CN102719288A CN 102719288 A CN102719288 A CN 102719288A CN 201210000038X A CN201210000038X A CN 201210000038XA CN 201210000038 A CN201210000038 A CN 201210000038A CN 102719288 A CN102719288 A CN 102719288A
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Abstract
The invention discloses heavy oil or diesel oil synthesized from papermaking waste liquid and a method for treating papermaking waste liquid. The heavy oil or diesel oil synthesized from papermaking waste liquid is characterized in that common heavy oil or diesel oil and a papermaking waste liquid treated by a filtration purification process are mixed, wherein the mass of the papermaking waste liquid is less than 30% of that of the common heavy oil or diesel oil; the mixture is added with 0.05 to 1.0% of a synthesis agent and then is subjected to mixing emulsification to form heavy diesel oil; and the filtration purification process comprises carrying out multistage filtration of the papermaking waste liquid by filter screens of 60 to 180 meshes to remove fibers and solid impurities and adjusting a Baume degree of the papermaking waste liquid to more than 5 oBe and alkali content to 4-12g/L. The heavy oil or diesel oil synthesized from a papermaking waste liquid can be used in an industrial boiler, does not produce side effects on various furnace-sintered products and machines, does not influence the atmosphere in a metal smelting furnace, does not produce coking, carbon deposition and pollution on the atmosphere, has a high oil-saving ratio more than 28% and high energy-saving efficiency more than 20%, and can be stored for more than 5 years.
Description
Technical field
The present invention relates to a kind of papermaking wastewater treatment technology, particularly a kind of papermaking wastewater synthesis of heavy oil or diesel oil and process for treating waste liquid from paper mill.
Background technology
Slurrying during paper waste is mainly produced from paper industry and copy two production processes of paper.Slurrying is to come out the fiber separation in the plant material, processes slurry, the bleaching pulping; Copy paper and be slurry dilute, moulding, squeezing, oven dry, the system of copying, be processed into paper.Slurrying, copy paper and all discharge great amount of wastewater.The waste water that slurrying produces pollutes the most serious.Discharge waste water during pulp washing and be chocolate, be called Heisui River, Pollutant levels are very high in the Heisui River, and BOD contains a large amount of fibers, inorganic salt and pigment up to 5-40g/L.The waste water that bleaching process is discharged also contains a large amount of acid-base materials.The waste water that paper machine is discharged is called plain boiled water, the filler and the sizing material that wherein contain a large amount of fibers and add in process of production.
The processing of paper-making industrial waste water should focus on the raising cyclic utilization rate, reduces water consumption and wastewater discharge, also should try to explore various reliable, economical and can make full use of the treatment process of useful resources in the waste water simultaneously.For example: fibering solid matter in the recyclable plain boiled water of flotation process, the recovery can reach 95%, but the primary water reuse; Sodium hydroxid in the recyclable Heisui River of combustion method, sodium sulphite, sodium sulfate and with other sodium salts of organism bonded.Neutralisation is regulated waste water ph; Coagulating sedimentation or flotation process can be removed suspended solids in the waste water; Chemical precipitation method can be decoloured; Biological treatment can be removed BOD, and is more effective to kraft paper waste water; It is comparatively successful that wet oxidation process is handled the sulfite paper pulp waste water.In addition, treatment processs such as the r-o-of employing, ultra-filtration, electrodialysis are also arranged both at home and abroad.
CN98100737.6 has introduced a kind of treatment technology for papermaking waste liquor, with the slurry cake of slurry after the press filtration of one-level spiral Double-screen filter press be discharged into 1# diffusely in, concentrated black liquid flows into the concentrated black liquid pond, 1 ton of thick slurry has 6M
3Concentrated black liquid be back in the 0# stock tank, all the other concentrated black liquids get into black liquor and handle, the rare black liquor that leaches from the 2# pressure filter gets into 2# dilute black liquid pond, wherein 10M
3Rare black liquor gets into the 0# stock tank, and puts into one ton of coarse particles, the 6M of 2# dilute black liquid pond
3The rare black liquor of the 10M3 of rare black liquor and 3# dilute black liquid pond gets into the 1# diffusion cell; Make the dense skin of slurry in the 1# diffusion cell reduce to 5%, and soak, the filtrating that the slurry of 1# diffusion cell is put into after the press filtration of 2# pressure filter gets into the rare black liquor of 2# ground; To starch cake and be discharged into the 2# diffusion cell, with 6M in the rare black ripple of the 3# pond
3Rare black liquor and 10M
3Clear water get into the 2# diffusion cell, and soak, make in the 2# diffusion cell black liquid consistency reduce to 5%, the slurry in the 2# diffusion cell is put into the 3# pressure filter, the filter liquor concentration after the press filtration is 25% to get into the 3# dilute black liquid pond, the slurry cake is used 4M
3Get into washing behind the hot water vacuum filtration and float workshop section, clear liquid is incorporated the middle section water processing into, between two pressure filter, is provided with diffusion cell; Lignin treatment agent DL-1 and black liquor are 2-3% by weight percentage, mix, and get into separation system, carry out solid-liquid separation; Clear liquid mixes with middle section water.
The Master's thesis of the Li Xuesong of Beijing University of Chemical Technology " papermaking wastewater is handled and research of utilization " is big to the investment of method of enrichment papermaking wastewater treatment technology, energy consumption is high, the resource utilization income low and medium and small sized enterprises are difficult to problems such as enforcement, and partition method papermaking wastewater treatment technology is analysed in the proposition effectively alkali of separating lignin.
But the present technology that a kind of full use papermaking wastewater is not arranged as yet can realize purposes such as material utilizes once more, pollution abatement.
Summary of the invention
Technical problem to be solved by this invention provides a kind of papermaking wastewater synthesis of heavy oil or diesel oil and process for treating waste liquid from paper mill; Utilize the effective constituent of papermaking wastewater to mix, make more valuable dyestuff, reach the radical cure paper-making pollution with heavy oil or diesel oil; Turn waste into wealth energy saving purposes.
For the purpose that realizes solving the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of papermaking wastewater synthesis of heavy oil or diesel oil; It is characterized in that: with heavy oil or diesel oil; With behind the filtering and impurity removing papermaking wastewater is mixed, the papermaking wastewater amount after the filtering of interpolation is assorted is below 30% of heavy oil or diesel quality, and adds 0.05% ~ 1.0% compound agent; Behind mixing and emulsifying, form the dispersion liquid of water-in-oil-type, promptly obtain required heavy gas oil; Described papermaking wastewater filtering and impurity removing method is: after papermaking wastewater was removed fiber and solid sundries through 60-180 purpose filter screen cascade filtration, the degree Beaume of adjustment waste liquid was more than the 5oBe, and alkalinity is between the 4-12 grams per liter; Said compound agent can be selected the tensio-active agent of HLB10 ~ 20.Preferred compound agent is polyoxyalkylene alkyl, polyoxyalkylene alkyl ester etc.
The HLB value is the size between hydrophilic group and the oleophilic group and the amount of balance of power degree in the surfactant molecule, is defined as HLB VALUE OF SURFACTANTS.
Described mixing and emulsifying technology requires stirring velocity to change for PM 1500-5000, and churning time is 0.5 ~ 3 hour.
A kind of process for treating waste liquid from paper mill is characterized in that: after papermaking wastewater is removed fiber and solid sundries through 60-180 purpose filter screen cascade filtration, be adjusted into more than the 5oBe, alkalinity is between the 4-12 grams per liter; Mix with heavy oil or diesel oil then, the papermaking wastewater amount is below 30% of heavy oil or diesel quality, and adds 0.05% ~ 1.0% compound agent, behind mixing and emulsifying, forms the dispersion liquid of water-in-oil-type.Described compound agent can be selected the tensio-active agent of HLB10 ~ 20, like polyoxyalkylene alkyl, polyoxyalkylene alkyl ester etc.Described mixing and emulsifying technology stirring velocity is changeed for PM 1500-5000, and churning time is 0.5 ~ 3 hour.
The described alkalinity of this patent is meant that the hydroxide ion content in the unit volume is converted into the alkalinity of NaOH.
The know-why of this patent is:
1, when heavy oil or diesel oil burnt in air, the oxygen of whole combustion processes was supplied with by primary air; After adding the moisture of certain ratio in heavy oil or the diesel oil, under the effect of compound agent, oil molecule closely wraps up water molecules; When the butyraceous water molecules runs into high temperature; Water molecules sharply expand into water vapour, makes oil be refined into ultrafine particle, lets oil reach perfect combustion; And water can be decomposed into hydrogen and hydroxyl free radical under the effect of light and heat, and radical can be accelerated combustion reactions, be burn more abundant, thereby reach the effect of fuel-economizing.
2, the xylogen in the waste liquid under the effect of compound agent, can combine with oil molecule, thereby produces the fuel of high heating value.
3, the alkaline matter in the waste liquid, with the effect of achievement under, can reduce oil viscosity.
Through adopting technique scheme, the present invention has following beneficial effect:
Prepared papermaking wastewater synthesis of heavy oil of the present invention or diesel oil can replace GB heavy oil or diesel oil, in various Industrial Boilers, use; As using on fire-resistant, glass, smelting, pottery, power station, chemical tower stove and the various Industrial Boiler,, have no side effect for various stove agglomerating products; Machinery is had no side effect; Atmosphere in the metal smelting furnace does not have influence, noncoking, no carbon distribution, free from environmental pollution; Rate of economizing gasoline is up to more than 28%, and energy-saving effect can store more than 5 years up to more than 20%.
Embodiment
Embodiment 1
After papermaking wastewater Heisui River process 60-180 purpose filter screen cascade filtration removal fiber and solid sundries, be adjusted into more than the 5oBe, alkalinity prepares papermaking wastewater B between the 4-12 grams per liter.
Embodiment 2
Heavy oil is mixed with the papermaking wastewater B of embodiment 1, and the waste liquid amount oil quality 20% of attaching most importance to, and add 0.2% compound agent is that PM 2000 changes through stirring velocity, and churning time is behind 1.5 hours mixing and emulsifyings, to obtain required heavy oil; Compound agent is: T 46155 (5) sorbitan monooleate.
Embodiment 3
Diesel oil is mixed with the papermaking wastewater B of embodiment 1, and waste liquid amount is attached most importance to oil quality below 10%, and adds 0.5% compound agent, is that PM 3000 changes through stirring velocity, and churning time is behind 1 hour mixing and emulsifying, to obtain required heavy oil; Compound agent is: T 46155 (20) sorbitan trioleate.
Claims (6)
1. papermaking wastewater synthesis of heavy oil or diesel oil; It is characterized in that: with heavy oil or diesel oil; With behind the filtering and impurity removing papermaking wastewater is mixed, the papermaking wastewater amount after the filtering of interpolation is assorted is below 30% of heavy oil or diesel quality, and adds 0.05% ~ 1.0% compound agent; Behind mixing and emulsifying, form the dispersion liquid of water-in-oil-type, promptly obtain required heavy gas oil; Described papermaking wastewater filtering and impurity removing method is: after papermaking wastewater was removed fiber and solid sundries through 60-180 purpose filter screen cascade filtration, the degree Beaume of adjustment waste liquid was more than the 5oBe, and alkalinity is between the 4-12 grams per liter; Said compound agent is the tensio-active agent of HLB10 ~ 20.
2. according to said papermaking wastewater synthesis of heavy oil of claim 1 or diesel oil, it is characterized in that: described compound agent is polyoxyalkylene alkyl or polyoxyalkylene alkyl ester.
3. process for treating waste liquid from paper mill is characterized in that: after papermaking wastewater is removed fiber and solid sundries through 60-180 purpose filter screen cascade filtration, be adjusted into more than the 5oBe, alkalinity is between the 4-12 grams per liter; Mix with heavy oil or diesel oil then, the papermaking wastewater amount is below 30% of heavy oil or diesel quality, and adds 0.05% ~ 1.0% compound agent, behind mixing and emulsifying, forms the dispersion liquid of water-in-oil-type.
4. according to the said process for treating waste liquid from paper mill of claim 3, it is characterized in that: described compound agent is the tensio-active agent of HLB10 ~ 20.
5. according to the said process for treating waste liquid from paper mill of claim 3, it is characterized in that: described compound agent is polyoxyalkylene alkyl or polyoxyalkylene alkyl ester.
6. according to the said process for treating waste liquid from paper mill of claim 3, it is characterized in that: described mixing and emulsifying technology stirring velocity is changeed for PM 1500-5000, and churning time is 0.5 ~ 3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210000038XA CN102719288A (en) | 2012-01-01 | 2012-01-01 | Heavy oil or diesel oil synthesized from papermaking waste liquid and method for treating papermaking waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210000038XA CN102719288A (en) | 2012-01-01 | 2012-01-01 | Heavy oil or diesel oil synthesized from papermaking waste liquid and method for treating papermaking waste liquid |
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| Publication Number | Publication Date |
|---|---|
| CN102719288A true CN102719288A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210000038XA Withdrawn CN102719288A (en) | 2012-01-01 | 2012-01-01 | Heavy oil or diesel oil synthesized from papermaking waste liquid and method for treating papermaking waste liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647603A (en) * | 2015-12-29 | 2016-06-08 | 广东生益科技股份有限公司 | Organic wastewater treatment method and microemulsification diesel oil prepared by method |
-
2012
- 2012-01-01 CN CN201210000038XA patent/CN102719288A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647603A (en) * | 2015-12-29 | 2016-06-08 | 广东生益科技股份有限公司 | Organic wastewater treatment method and microemulsification diesel oil prepared by method |
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| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20121010 |