CN110608585A - Drying processing method of corn steep liquor - Google Patents
Drying processing method of corn steep liquor Download PDFInfo
- Publication number
- CN110608585A CN110608585A CN201810627425.3A CN201810627425A CN110608585A CN 110608585 A CN110608585 A CN 110608585A CN 201810627425 A CN201810627425 A CN 201810627425A CN 110608585 A CN110608585 A CN 110608585A
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- Prior art keywords
- corn steep
- steep liquor
- dried
- filter
- processing method
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- 240000008042 Zea mays Species 0.000 title claims abstract description 46
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 46
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 46
- 235000005822 corn Nutrition 0.000 title claims abstract description 46
- 238000001035 drying Methods 0.000 title claims abstract description 17
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 239000013072 incoming material Substances 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 238000002203 pretreatment Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 8
- 229920002261 Corn starch Polymers 0.000 abstract description 4
- 239000008120 corn starch Substances 0.000 abstract description 4
- 239000006227 byproduct Substances 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 3
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Diphosphoinositol tetrakisphosphate Chemical compound OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 125000001477 organic nitrogen group Chemical group 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 229930192334 Auxin Natural products 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002363 auxin Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- SEOVTRFCIGRIMH-UHFFFAOYSA-N indole-3-acetic acid Chemical compound C1=CC=C2C(CC(=O)O)=CNC2=C1 SEOVTRFCIGRIMH-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/026—Arrangements for charging or discharging the materials to be dried, e.g. discharging by reversing drum rotation, using spiral-type inserts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
- F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Cereal-Derived Products (AREA)
Abstract
A drying processing method of corn steep liquor, belonging to the processing field of corn starch by-products. The corn steep liquor is pretreated, then dried by a roller scraper dryer, cooled to form dry blocky or flaky objects, and crushed into powder or granulated into particles. The corn steep liquor is a concentrated solution of corn steep water for preparing corn starch. The corn steep liquor is firstly filtered or preheated, then is coated on the outer surface of a rotary drum of a drum scraper dryer by adopting a material distribution method of pressure pump pressurization spray coating, and then is scraped by a scraper after being dried, and then is naturally cooled, or is subjected to forced air cooling, or is mechanically cooled to form blocks or sheets after being dried, and the blocks or sheets are crushed to form powder or particles after being granulated. Compared with the existing drying method, the method has the advantages of simple process, energy conservation, environmental protection and low processing cost.
Description
Technical Field
The invention belongs to a processing method of a corn starch by-product, which is a process method that corn steep liquor is dried by a roller scraper dryer after being pretreated, and is cooled into dry blocks or sheets, and the dry blocks or sheets are crushed into powder or granulated into particles after being granulated.
Background
The corn steep liquor is a concentrated solution of corn steep water in the process of preparing corn starch, and contains rich soluble protein, auxin, sugar and a plurality of precursor substances. The main application is as follows: firstly, the organic nitrogen source can be used as a cheap organic nitrogen source in the microbial fermentation industry; secondly, the fertilizer can be used for feed and fertilizer; thirdly, the extract can be used as a raw material for extracting the phytin. Because the corn steep liquor has the characteristics of easy precipitation and 52-62% of water content, the storage and transportation cost is high during the external selling and the use is inconvenient, the existing enterprises can prepare the corn steep liquor into dry powder for external selling so as to reduce the storage and transportation cost and create economic value.
The current common method for drying corn steep liquor in enterprises is a pressure spray drying process, and has the disadvantages that: firstly, the sugar content is high, the sugar is very easy to adhere to the inner wall of the drying tower, the process of cleaning dried substances is complicated, and the labor intensity is high; secondly, the adopted gas medium heat transfer drying method has low heat efficiency, large waste gas amount and large whole system consumption; thirdly, because most of the spray towers are short in design flow, when the dried corn steep liquor is not well dried, in order to ensure the production yield and the low enough moisture of the product, the drying temperature must be increased, sometimes even to 230 ℃, so that the quality of the product is seriously reduced and the rear pipeline is easily ignited; fourthly, most spray towers are not provided with a cooling section, a cooling method of externally blowing cold air by high-temperature accumulation is adopted, the high-temperature time exceeding 85 ℃ in the process is too long, and the product quality is seriously reduced.
The present invention relates to a method for drying and processing corn steep liquor by using roller scraper dryer, and is characterized by that it adopts the partition wall heat-transfer drying and timely cooling method, and compared with pressure spray drying process, it has the advantages of high heat efficiency, small waste gas quantity, high product quality, low labour intensity and low investment and running cost.
Disclosure of Invention
The invention aims to provide a process method for drying pretreated corn steep liquor by using a roller scraper dryer, cooling the corn steep liquor into blocks or sheets, and crushing the blocks or sheets into powder or granulating the powder into particles.
The technical scheme is realized as follows: the corn steep liquor is firstly pretreated, then is coated on the outer surface of a rotary drum of a drum scraper dryer by adopting a spray coating material distribution method, after being dried, the dried corn steep liquor is scraped by a scraper, is cooled into a dried blocky or flaky substance, and is crushed into powder or granulated into particles.
The pretreatment process of the corn steep liquor mainly comprises four links of a coarse filter, a preheater, a fine filter and a wet crusher, and the operation method comprises the following steps according to the process requirements:
the preheating temperature of the corn steep liquor is determined according to the water content and is generally controlled to be 25-105 ℃; the incoming material is hot material and can reach the temperature required by the process, and the pretreatment process can be directly completed through a coarse filter-fine filter link, and when the incoming material is cold material and can not reach the temperature required by the process, the incoming material is finely filtered through a fine filter after reaching the temperature required by the process through the coarse filter-preheater link; and (3) the filtrate enters the next procedure, the filter residue can be directly returned to the front end of the preheater when the filter residue amount is small, and the filter residue is crushed by the wet crusher and then returned to the front end of the preheater for recycling when the filter residue amount is large.
In the drying process of the corn steep liquor, the pressure range of the pressure pump is controlled to be 0.3-3.0 MPa/cm2The surface area of the roller scraper dryer is selected to be 0.5-60 m2The implementation method comprises the following steps:
1. after the pretreated corn steep liquor is pressurized by a pressurizing pump to meet the process requirements, coating the pretreated corn steep liquor on the outer surface of a rotary roller of a roller scraper dryer by using a material distribution method of nozzle spraying, wherein the number of spraying layers is 1-4, and the thickness is controlled to be 0.1-2 mm;
2. the sprayed sediment liquid is collected and returned to the front end of the fine filter;
3. the temperature and the rotating speed of the outer surface of the roller are determined according to the spraying thickness, the water content, the preheating temperature and the weather conditions of the corn steep liquor, the temperature of the outer surface of the roller is controlled to be 45-200 ℃, and the rotating speed of the roller is controlled to be 1-10 revolutions per minute;
4. the dried product is scraped by a scraper and then enters a cooling process.
The cooling procedure of the invention is that the dried substance of corn steep liquor dried by a roller scraper dryer is cooled by adopting a natural cooling mode, or forced air cooling mode or a mechanical cooling mode to be made into blocks or sheets of dried corn steep liquor, and then the blocks or sheets are crushed or granulated.
Finally, the corn steep liquor blocks or flakes after cooling and drying are crushed into powder or granulated into particles to complete the processing process.
The process can continuously process the corn steep liquor into dry powder or particles, the moisture content is 3-9% from 52-62%, the processing cost is low, and the storage, the transportation and the use are convenient.
Drawings
FIG. 1 is a schematic view of the present drum scraper dryer process for processing corn steep liquor.
Detailed Description
Injecting high-temperature steam or heat conducting oil into the rotating roller from one end of the roller scraper dryer to raise the temperature of the outer surface of the roller to 45-200 ℃, then sending the corn steep liquor into a pretreatment procedure 1, and carrying out pretreatment on the corn steep liquor by using any one of the following methods: when the incoming material is a hot material and can reach the temperature 25-105 ℃ required by the process, directly finishing pretreatment through a coarse filter-fine filter link and sending the pretreated incoming material to the next process, and when the incoming material is a cold material and can not reach the temperature required by the process, reaching the temperature required by the process through the coarse filter-pre-heater link and then finely filtering through a fine filter; and (4) enabling the filtrate to enter the next procedure, enabling the filter residue to directly return to the front end of the preheater when the filter residue amount is small, and enabling the filter residue to return to the front end of the preheater after being crushed by the wet crusher when the filter residue amount is large.
The pretreated corn steep liquor enters a drying procedure 2, and the surface area of a roller of a used roller scraper dryer is 0.5-60 m2The operation method comprises the following steps: pressurizing the pretreated corn steep liquor by using a pressure pump, and controlling the pressure range to be 0.3-3.0 MPa/cm2(ii) a Then coating the outer surface of a rotary roller of a roller scraper dryer by adopting a material distribution method of nozzle spraying, wherein the number of spraying layers is controlled to be 1-4 layers and the thickness is controlled to be 0.1-2 mm according to the preheating temperature, the water content, the spraying pressure and the working condition of the dryer; the sprayed sediment liquid is collected and returned to the front end of the fine filter in the pretreatment procedure 1; the temperature and the rotating speed of the outer surface of the roller are determined according to the spraying thickness, the water content, the preheating temperature and the weather conditions of the corn steep liquor, the temperature of the outer surface of the roller is controlled to be 45-200 ℃, and the rotating speed of the roller is controlled to be 1-10 revolutions per minute; the dried material is scraped by a scraper and then enters the next working procedure.
The cooling process 3 of the invention is that the dried substance of corn steep liquor dried by a roller scraper dryer is made into blocks or sheets of dried corn steep liquor by adopting a cooling mode of natural cooling, forced air cooling or mechanical cooling, and then the blocks or sheets are crushed or granulated.
The whole processing process is completed by crushing the corn steep liquor blocks or sheets after cooling and drying into powder or granulating into particles.
Claims (4)
1. A drying processing method of corn steep liquor is characterized in that: after being treated, the corn steep liquor is coated on the outer surface of a rotary drum of a drum scraper dryer by a spray coating material distribution method, dried corn steep liquor is scraped by a scraper after being dried, the dried corn steep liquor is cooled to form dried blocky or flaky objects, and the dried blocky or flaky objects are crushed to form powder or granules after finishing.
2. The pre-treatment process of the corn steep liquor processing method of claim 1, which mainly comprises four links of a coarse filter, a preheater, a fine filter and a wet crusher, and the operation method comprises the following steps according to the process requirements:
the preheating temperature of the corn steep liquor is determined according to the water content and is generally controlled to be 25-105 ℃;
the incoming material is hot material and can reach the temperature required by the process, the pretreatment process can be directly completed through a coarse filter-fine filter link, and when the incoming material is cold material and can not reach the temperature required by the process, the incoming material is finely filtered through a fine filter after reaching the temperature required by the process through the coarse filter-preheater link;
and (4) enabling the filtrate to enter the next procedure, enabling the filter residue to directly return to the front end of the preheater when the filter residue amount is small, and enabling the filter residue to return to the front end of the preheater after being crushed by the wet crusher when the filter residue amount is large.
3. The drying process in the corn steep liquor processing method according to claim 1, wherein:
the pressure range of the pressure pump is controlled to be 0.3-3.0 MPa/cm2；
The number of spraying layers is 1-4;
the thickness of the cloth is controlled to be 0.1-2 mm;
the sprayed sediment liquid is collected and returned to the front end of the fine filter in the pretreatment procedure;
the temperature of the outer surface of the roller is controlled to be 45-200 ℃;
the rotating speed of the roller is controlled to be 1-10 revolutions per minute;
the outer surface area of the roller scraper dryer is 0.5-60 m2In the meantime.
4. The cooling process in the corn steep liquor processing method according to claim 1, wherein: the cooling can be carried out by natural cooling, forced air cooling or mechanical cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810627425.3A CN110608585A (en) | 2018-06-15 | 2018-06-15 | Drying processing method of corn steep liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810627425.3A CN110608585A (en) | 2018-06-15 | 2018-06-15 | Drying processing method of corn steep liquor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608585A true CN110608585A (en) | 2019-12-24 |
Family
ID=68888828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810627425.3A Pending CN110608585A (en) | 2018-06-15 | 2018-06-15 | Drying processing method of corn steep liquor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110608585A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100993A (en) * | 2021-11-22 | 2022-03-01 | 东台市食品机械厂有限公司 | Material distribution method of roller dryer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3236285A (en) * | 1962-07-06 | 1966-02-22 | Micro Biolog Ltd | Spray drying of liquids |
| CN101185487A (en) * | 2007-11-27 | 2008-05-28 | 安阳漫天雪蛋白有限公司 | Method for curing liquid condition molasses |
| CN102550937A (en) * | 2012-02-20 | 2012-07-11 | 河南鑫源食品有限公司 | Method for preparing instant dried corn steep liquor powder by using corn steep liquor |
| CN102689947A (en) * | 2012-06-14 | 2012-09-26 | 赵建安 | Method for concentrating corn soaking water by membrane filtration |
| CN105627708A (en) * | 2016-02-06 | 2016-06-01 | 上海凯赛生物技术研发中心有限公司 | Roller scratch board drier |
-
2018
- 2018-06-15 CN CN201810627425.3A patent/CN110608585A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3236285A (en) * | 1962-07-06 | 1966-02-22 | Micro Biolog Ltd | Spray drying of liquids |
| CN101185487A (en) * | 2007-11-27 | 2008-05-28 | 安阳漫天雪蛋白有限公司 | Method for curing liquid condition molasses |
| CN102550937A (en) * | 2012-02-20 | 2012-07-11 | 河南鑫源食品有限公司 | Method for preparing instant dried corn steep liquor powder by using corn steep liquor |
| CN102689947A (en) * | 2012-06-14 | 2012-09-26 | 赵建安 | Method for concentrating corn soaking water by membrane filtration |
| CN105627708A (en) * | 2016-02-06 | 2016-06-01 | 上海凯赛生物技术研发中心有限公司 | Roller scratch board drier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100993A (en) * | 2021-11-22 | 2022-03-01 | 东台市食品机械厂有限公司 | Material distribution method of roller dryer |
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Inventor after: Zhou Shanhua Inventor after: Bei Zheng Inventor after: Liu Panpan Inventor after: Li Guirong Inventor after: Chen Yuzhu Inventor before: Li Guirong Inventor before: Chen Yuzhu |
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Effective date of registration: 20220316 Address after: 010000 west side of floor 2, building 1, University Science Park, Genghis Khan East Street, Xincheng District, Hohhot, Inner Mongolia Autonomous Region Applicant after: Inner Mongolia Honghao energy saving and Environmental Protection Technology Co.,Ltd. Address before: 011517 No. 32, xigoumen immigrant village, Shengle Town, Helinger County, Hohhot City, Inner Mongolia Autonomous Region Applicant before: Inner Mongolia Zhaofeng Biotechnology Co.,Ltd. |
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