CN115646061A - Method for preparing filter aid from corn fiber residues - Google Patents
Method for preparing filter aid from corn fiber residues Download PDFInfo
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- CN115646061A CN115646061A CN202211636082.XA CN202211636082A CN115646061A CN 115646061 A CN115646061 A CN 115646061A CN 202211636082 A CN202211636082 A CN 202211636082A CN 115646061 A CN115646061 A CN 115646061A
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- corn
- corn bran
- bran fiber
- filter aid
- fiber residue
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- 240000008042 Zea mays Species 0.000 title claims abstract description 96
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 96
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 94
- 235000005822 corn Nutrition 0.000 title claims abstract description 94
- 239000000835 fiber Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001354 calcination Methods 0.000 claims abstract description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000007935 neutral effect Effects 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 8
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 7
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 7
- 239000008158 vegetable oil Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000007873 sieving Methods 0.000 claims abstract description 3
- 239000011259 mixed solution Substances 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 12
- 239000003513 alkali Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000010903 husk Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- 239000013049 sediment Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 2
- 235000009973 maize Nutrition 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
Abstract
The application discloses a method for preparing a filter aid from corn fiber residues, which belongs to the field of corn deep processing and is used for preparing the filter aid, and comprises the steps of drying and crushing corn husk fibers, deoiling the crushed corn husk fibers by adopting a vegetable oil extraction solvent 6# solvent, adjusting the pH value to be 7.0 to 13.0 by adopting 30% concentration caustic soda after mixing the deoiled corn husk fiber residues with clear water, keeping the temperature of the mixture constant in a water bath at 80 ℃ for 2 hours, washing residues to be neutral after filtering, calcining, and sieving after calcining. The method can realize secondary utilization of the corn bran, and the corn bran is treated to obtain the filter aid which can be used for the filtering process, so that the method is favorable for reducing the production cost of the filter aid, reducing the environmental pollution, reducing the resource consumption and improving the added value of products.
Description
Technical Field
The invention belongs to the field of corn deep processing, and particularly relates to a method for preparing a filter aid from corn fiber residues.
Background
The filter aid is generally a powdery product processed from a non-metallic material, is used as a substance for assisting filtration, can play a role in strengthening filtration in the filtration process, and cannot chemically react with a substance to be filtered, so that the filter aid can play a role in improving the filtration speed and the filtration effect in the filtration process of industrial production.
The corn fiber skin is prepared by soaking and crushing corn, separating corn skin, washing, squeezing water, drying and other processes, and mainly comprises fiber, starch, protein, certain substances such as corn yellow pigment, corn fiber oil and the like. The industrial corn processing amount in China exceeds 1.13 million tons, and the corn husks produced by China reach about 1200 million tons every year. However, the corn husks are not fully utilized, and how to fully utilize the corn husk byproducts improves the use value of the corn husks in the food industry, creates more economic and social benefits, and becomes one of the technical problems to be solved by the industry. And the fiber filter aid is prepared by utilizing the residual filter residue after oil extraction of the hydrolysis residue, so that the corn bran with larger stock can be utilized, the production cost is reduced, the environmental pollution can be reduced, the resource is saved, and the added value of the product is increased.
Disclosure of Invention
The invention aims to provide a method for preparing a filter aid from corn fiber residues, which can realize secondary utilization of corn husks, can obtain the filter aid for a filtering process after the corn husks are treated, and is beneficial to reducing the production cost of the filter aid, reducing environmental pollution, reducing resource consumption and improving the added value of products.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for preparing a filter aid from corn fiber residues comprises the following steps:
step 1), drying the corn bran fiber within the temperature range of 75-80 ℃, and crushing the dried corn bran fiber to obtain corn bran fiber residue, wherein the water content of the crushed corn bran fiber residue is less than 10%;
step 2), soaking the dried and crushed corn bran fiber residue obtained in the step 1) by adopting a vegetable oil extraction solvent 6# solvent, wherein the soaking temperature is 50-55 ℃, and the mass ratio of the vegetable oil extraction solvent 6# solvent to the dried and crushed corn bran fiber is 6:1, soaking and extracting for 6 hours, and filtering after soaking and extracting to obtain deoiled corn bran fiber residues;
step 3), mixing the deoiled corn bran fiber residue obtained in the step 2) with clear water, wherein the mixing mass ratio of the corn bran fiber residue to the clear water is 1:10, uniformly stirring after mixing to obtain a corn bran fiber residue mixed solution;
step 4), adjusting the pH value of the corn bran fiber residue mixed solution obtained in the step 3) to 7.0 to 13.0 by adopting 30% caustic soda, and preserving heat in a water bath at 80 ℃ for 2 hours to obtain an alkali-treated corn bran fiber residue mixed solution;
step 5), washing the corn bran fiber residue mixed solution obtained in the step 4) after alkali treatment to be neutral by using clear water, filtering to obtain filter residue, and drying to obtain neutral corn bran fiber residue;
step 6), calcining the neutral corn bran fiber residue obtained in the step 5), wherein the calcining time is 3 hours;
and 7) crushing the product obtained by calcining in the step 6), and sieving the crushed product with a 120-mesh sieve.
As one of preferable technical means, the pH value adjusted by 30% caustic soda in the step 4) described in the present application is 7.0, 9.0, 11.0, or 13.0.
As one of the preferable technical solutions, the calcination in step 6) described in the present application is divided into two steps, wherein in the first step, the calcination temperature is 300 ℃ and the calcination time is 1h in a muffle furnace oxygen-introducing environment; the second step is that the temperature is continuously raised to 550 ℃ in the muffle furnace oxygen environment, and the calcination time is 2 hours.
Compared with the prior art, the invention has the beneficial effects that:
this application is at first got rid of the grease that contains in the corn fiber sediment, and carry out the alkalization to the corn fiber sediment after getting rid of the grease, the corn fiber sediment after the alkalization becomes neutral through the washing and dries, the corn fiber sediment after the stoving is at the process of calcining, can obtain corn fiber sediment filter aid after smashing, the above-mentioned make full use of that can realize the maize skin to the processing procedure of corn fiber sediment, and can further reduce the manufacturing cost of filter aid and reduce the pollution to the environment, improve the utilization degree of maize skin resource, increase the added value of product.
Detailed Description
The technical solution of the present invention will be further described and illustrated with reference to the following examples. In the course of this detailed description, the terms of orientation, including but not limited to "up, down, left, right" are used only to facilitate the understanding of the technical solutions described in the present application by those skilled in the art according to the presented visual orientation. Unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and their meaning in the context of the present invention will be understood to those of ordinary skill in the art.
Example 1
A method for preparing a filter aid from corn fiber residue comprises the following steps:
step 1), drying the corn bran fiber within a temperature range of 75-80 ℃, wherein the temperature within the range does not influence the subsequent oil removal treatment of the corn bran and can also promote the water loss in the corn bran fiber; the corn bran fiber obtained by drying is crushed to obtain corn bran fiber residue, the crushed corn bran fiber residue can increase the surface area so as to obtain more ideal oil removal efficiency in the subsequent oil removal treatment, and the water content of the obtained corn bran fiber residue is less than 10%. The corn husk fiber after primary drying can realize stable crushing, and subsequent deoiling treatment is not influenced.
Step 2), soaking the dried and crushed corn bran fiber residues obtained in the step 1) by using a vegetable oil extraction solvent 6# solvent in an environment of 50 ℃, wherein the mass ratio of the vegetable oil extraction solvent 6# solvent to the soaked corn bran fiber residues is 6:1, soaking and extracting for 6 hours, and filtering after soaking to obtain deoiled corn bran fiber residues; the corn bran fiber residue after the grease is removed can avoid chemical reaction with substances to be filtered, and the performance of the filter aid is improved.
Step 3), mixing the deoiled corn bran fiber residue obtained in the step 2) with clear water, wherein the mass ratio of the deoiled corn bran fiber residue to the clear water is 1:10, stirring to obtain a corn bran fiber residue mixed solution after mixing;
step 4), adjusting the pH value of the corn bran fiber residue mixed solution obtained in the step 3) by using 30% caustic soda, wherein the adjusted pH value is preferably 7.0, 9.0, 11.0 and 13.0, and selecting a proper pH value according to the required reaction speed and the required reaction time, wherein the higher the pH value is, the shorter the reaction time is, and the faster the reaction speed is; and after the pH value is adjusted, placing the mixture in a water bath at the temperature of 80 ℃ for heat preservation for 2 hours to obtain the alkali-treated corn bran fiber residue mixed solution. The 30% caustic soda has mild alkali treatment conditions, relatively short alkali treatment time and low energy consumption, and can also destroy some relatively inert fiber structures, which is beneficial to improving the reactivity of cellulose, so that saponification reaction occurs inside the corn bran fiber molecules, and the corn bran fiber presents porosity.
Step 5), continuously washing the alkali-treated corn bran fiber residue mixed solution obtained in the step 4) to be neutral by using clear water, filtering and drying to obtain neutral corn bran fiber residue, wherein the moisture content of the dried neutral corn bran fiber residue is less than 10%; the dried neutral corn bran fiber residue can be effectively subjected to subsequent calcination treatment.
Step 6), calcining the neutral corn bran fiber residue obtained in the step 5), wherein the calcining time is 3 hours, and the calcining is divided into two steps, wherein in the first step, the neutral corn bran fiber residue is continuously calcined for 1 hour in an oxygen-introducing environment at the calcining temperature of 300 ℃, then the temperature is increased to 550 ℃ in the oxygen-introducing environment, the calcining is continued for 2 hours, and a calcining tool adopts a muffle furnace;
and 7) cooling and crushing the calcined product obtained in the step 6) at room temperature, and filtering the crushed calcined product through a 120-mesh sieve to obtain the product.
Compared with the conventional filter aid, the corn bran fiber residue treated by the processes of oil removal, alkalization and the like in the application is compared with the traditional finished filter aid, the same amount of corn bran fiber residue filter aid, the diatomite filter aid and the powdery ion exchange resin filter aid is obtained, the 10g time of filtering 30g of materials is calculated, the addition amount is calculated by 10kg/8t, the respective filtering speeds are 3 minutes and 22 seconds, 4 minutes and 23 seconds and 5 minutes and 00 seconds, and the corn bran fiber residue filter aid in the application has excellent filtering speed and filtering quality.
Finally, although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such descriptions are merely for clarity and should be taken as a whole by those skilled in the art, and the embodiments may be combined as appropriate to form other embodiments as would be understood by those skilled in the art.
Claims (3)
1. A method for preparing a filter aid from corn fiber residues is characterized by comprising the following steps: the method comprises the following steps:
step 1), drying the corn bran fiber within a temperature range of 75-80 ℃, and crushing the dried corn bran fiber to obtain corn bran fiber residue, wherein the water content of the crushed corn bran fiber residue is less than 10%;
step 2), soaking the dried and crushed corn bran fiber residue obtained in the step 1) by adopting a vegetable oil extraction solvent 6# solvent, wherein the soaking temperature is 50-55 ℃, and the mass ratio of the vegetable oil extraction solvent 6# solvent to the dried and crushed corn bran fiber is 6:1, soaking and extracting for 6 hours, and filtering to obtain deoiled corn bran fiber residues after soaking and extracting;
step 3), mixing the deoiled corn bran fiber residue obtained in the step 2) with clear water, wherein the mixing mass ratio of the corn bran fiber residue to the clear water is 1:10, uniformly stirring after mixing to obtain a corn bran fiber residue mixed solution;
step 4), adjusting the pH value of the corn bran fiber residue mixed solution obtained in the step 3) to 7.0 to 13.0 by adopting 30% caustic soda, and preserving heat in a water bath at 80 ℃ for 2 hours to obtain an alkali-treated corn bran fiber residue mixed solution;
step 5), washing the alkali-treated corn bran fiber residue mixed solution obtained in the step 4) with clear water to be neutral, filtering to obtain filter residue, and drying to obtain neutral corn bran fiber residue;
step 6), calcining the neutral corn bran fiber residue obtained in the step 5), wherein the calcining time is 3h;
and 7) crushing the product obtained by calcining in the step 6), and sieving the crushed product with a 120-mesh sieve.
2. The method for preparing the filter aid by using the corn fiber residue according to claim 1, which is characterized in that: the pH value adjusted by 30% caustic soda in the step 4) is 7.0, 9.0, 11.0 or 13.0.
3. The method for preparing the filter aid by using the corn fiber residue according to claim 1, which is characterized in that: the calcination in the step 6) is divided into two steps, wherein in the first step, the calcination temperature is 300 ℃ and the calcination time is 1h under the condition of introducing oxygen into a muffle furnace; the second step is that the temperature is continuously raised to 550 ℃ in the muffle furnace oxygen environment, and the calcination time is 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211636082.XA CN115646061A (en) | 2022-12-20 | 2022-12-20 | Method for preparing filter aid from corn fiber residues |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211636082.XA CN115646061A (en) | 2022-12-20 | 2022-12-20 | Method for preparing filter aid from corn fiber residues |
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| CN115646061A true CN115646061A (en) | 2023-01-31 |
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| CN202211636082.XA Pending CN115646061A (en) | 2022-12-20 | 2022-12-20 | Method for preparing filter aid from corn fiber residues |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN108970243A (en) * | 2018-08-03 | 2018-12-11 | 田长澄 | A kind of agar filter aid and the agar production technology using the filter aid |
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| CN109865349A (en) * | 2019-02-26 | 2019-06-11 | 常州中南化工有限公司 | A kind of heavy alkali filter aid of starch-containing industrial wastewater |
-
2022
- 2022-12-20 CN CN202211636082.XA patent/CN115646061A/en active Pending
Patent Citations (13)
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|---|---|---|---|---|
| CN1117887A (en) * | 1993-03-17 | 1996-03-06 | 易朝晖 | Method for regenerating filtration aid |
| CN1123807A (en) * | 1994-12-01 | 1996-06-05 | 赵志祥 | Method for producing white carbon black from husk of rice |
| CN1205908A (en) * | 1996-12-29 | 1999-01-27 | 中国科学院兰州化学物理研究所 | Preparation of cellulose powder filter aid |
| US20020070161A1 (en) * | 1997-03-13 | 2002-06-13 | Josef Otto Rettenmaier | Ancillary filtering agent |
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