CN117248515A - Application of dry starch in dustproof sand control field and application method - Google Patents
Application of dry starch in dustproof sand control field and application method Download PDFInfo
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- CN117248515A CN117248515A CN202210671038.6A CN202210671038A CN117248515A CN 117248515 A CN117248515 A CN 117248515A CN 202210671038 A CN202210671038 A CN 202210671038A CN 117248515 A CN117248515 A CN 117248515A
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- Prior art keywords
- sand
- dust
- dry starch
- starch
- water
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- 229920002472 Starch Polymers 0.000 title claims abstract description 112
- 235000019698 starch Nutrition 0.000 title claims abstract description 112
- 239000008107 starch Substances 0.000 title claims abstract description 111
- 239000004576 sand Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000005507 spraying Methods 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 17
- 230000002265 prevention Effects 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 17
- 239000011090 solid board Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000007667 floating Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 11
- 238000007873 sieving Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229920000881 Modified starch Polymers 0.000 description 4
- 229920000704 biodegradable plastic Polymers 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005648 plant growth regulator Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002988 biodegradable polymer Polymers 0.000 description 1
- 239000004621 biodegradable polymer Substances 0.000 description 1
- 229920006167 biodegradable resin Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses an application of dry starch in the field of dust prevention and sand control and a method thereof. Or, water is sprayed on the dust and sand surface to moisten the dust and sand surface, and then dry starch is sprayed on the moistened dust and sand surface immediately, wherein the spraying amount of the dry starch can ensure that a solid plate layer is formed after the dust and sand surface is dried. Because of strong viscosity and micropellet, the dry starch can effectively combine the dust and sand together, so that the dust and sand can be converted into a block body which is adhered from flowing powder, the flowing and floating of the dust and sand can be reduced or even eliminated, and the dust and sand pollution can be well prevented. The dry starch is used for dust prevention and sand control, and environmental protection can be achieved, and new pollution to the environment is avoided.
Description
Technical Field
The invention relates to the field of dustproof desertification control, in particular to application and an application method of dry starch in the field of dustproof desertification control.
Background
As the environment worsens, desert enlargement has become one of the crisis affecting human survival. In addition, the generation of artificial dust brings new problems to the human living environment. In order to be able to solve this problem, the prior art has disclosed that measures such as laying a cover layer, constructing a spray, providing a protective wall, etc. are taken to solve the problem. However, practice proves that the existing measures are difficult to construct, high in cost or poor in dust-removing and sand-preventing effects. CN102251517a provides a method for dust-proof and sand-fixing, which is to dilute polyurethane type ecological sand-fixing agent with water, then spray the sand-fixing agent on sandy soil, and form a solidified layer on the surface of sandy soil. Although the method can form a solidified layer, secondary pollution can be caused to the environment due to the existence of a large number of nondegradable organic polymers, and in addition, the technology has high cost and large implementation difficulty; CN103194240a provides a completely biodegradable polymer emulsion for dust prevention and sand fixation, the emulsion comprises aliphatic polycarbonate, aliphatic polyester, polyvinyl alcohol, starch and the like. Although the material in the method can be biodegraded, the method has the advantages of high cost, high implementation difficulty and poor dustproof sand fixation effect.
Disclosure of Invention
In order to solve the current technical problems and overcome the defects and shortcomings of the prior art measures, the invention provides a novel, simple, convenient and feasible technical measure which is environment-friendly, low in carbon and good in effect and can prevent dust and fix sand. The specific scheme of the invention is as follows:
the dry starch is applied to the field of dust prevention and sand control.
The application method of the dry starch in the field of dust prevention and sand control comprises the steps of firstly spraying the dry starch on the surface of the dust sand, then spraying water on the surface of the dust sand, wherein the spraying amount of the water can moisten the surface of the dust sand, and the spraying amount of the dry starch can ensure that a solid board layer is formed after the surface of the dust sand is dried.
A solid plate layer, characterized in that it is obtained according to the above method.
The application method of the dry starch in the field of dust prevention and sand control comprises the steps of firstly spraying water on the surface of the dust sand to moisten the surface of the dust sand, then immediately spraying the dry starch on the moistened surface of the dust sand, wherein the spraying amount of the dry starch can ensure that a solid board layer is formed after the surface of the dust sand is dried.
A solid plate layer, characterized in that it is obtained according to the above method.
Preferably, the dry starch has a particle size greater than 100 mesh.
The inventor discloses dry starch and a preparation method thereof in a dry starch applied to the field of biodegradable plastics, wherein the application number of the dry starch is CN202111212555.7 which is filed 10-15 of 2021, and the invention also discloses that the dry starch is mainly used as the field of biodegradable plastics, and particularly used as a filler of biodegradable plastics to prepare biodegradable resins. The inventors have also found that when the hands are placed in dry starch, the release of heat is clearly perceived and starch particles adhering to the hands are difficult to remove, in contrast to ordinary starch; the phenomenon that dry starch differs from ordinary starch is also: when ordinary starch and dry starch are placed in water, respectively, ordinary starch will quickly sink into water and disperse, forming a suspension with water, see fig. 1 (a); when the dry starch is placed in water, the dry starch does not sink into the water, but floats on the water surface, and even if stirred, the dry starch does not sink into the water. The dry starch forms two distinct parts with water, see fig. 1 (b), and the combination of both is distinct from water, see fig. 1 (c). The dry starch is mixed with a proper amount of water, and the formed product has high adhesiveness (see figure 2), and the viscosity can reach 31MPa.
The inventors believe that dry starch has a strong adhesion to water due to its unique molecular and tissue properties:
the dry starch has very little moisture content, the maximum content is 5 percent and is far lower than 14 percent of common starch, the internal tissue of the dry starch granule is mainly in an amorphous structure, almost no crystals are generated, the moisture is not combined with starch molecules to form hydrate, the hydroxyl groups of the starch molecules are not restrained, the activity is high, and when a proper amount of moisture is introduced, the hydroxyl groups in the starch molecules are activated, so that the dry starch granule has great attractive force. The inventors believe that this is the mechanism by which dry starch can produce greater adhesion.
The inventors also noted that: due to the specific structure and composition of dry starch, it also has properties not found in current common starches when its particle size is small to a certain size, such as when its particle size is greater than 100 mesh: fluidity in solid form.
Referring to fig. 3, dry starch having a particle size of 200 mesh and a moisture content of 1% was charged into a daily water spray can, which can spray dry starch in a mist form very easily, and neither ordinary starch nor modified starch thereof had this property.
The common starch (water content 14%), pregelatinized starch (water content 12%) and dry starch (particle size 200 mesh, water content 1%) with the same volume are sequentially put into a container, the container is sealed and then is provided with a small hole with a hole diameter of 1mm, when the container is inverted, the common starch and pregelatinized starch can not flow out of the small hole, and the dry starch can slowly flow out of the small hole. Dry starch has fluidity not possessed by ordinary starch, pregelatinized starch, or the like.
In addition, compared with the existing starch, the dry starch can have small granularity, so that the dry starch is particularly suitable for being combined with powder sand and dust. According to statistics, the particle size range of fly ash particles produced by steel plants and power plants is 0.5-300 mu m, the particle size is more than 60% in desert sand, the particle size is less than 0.25mm and is 65% in yellow river sand, and the particle size of flying dust produced by building industry is also mostly less than 0.1 mm.
Because of reasons such as adhesion among molecules, surface tension of liquid and the like, the existing liquid glue cannot adhere substances such as dust, tiny dust and the like under normal pressure, and most of the existing solid glue cannot be applied to adhesion of dust, especially tiny dust due to larger particle size (generally more than 0.5 mm).
The dry starch can be applied to dust occasions completely: as described in CN202111212555.7, the particle size of the dry starch is generally larger than 100 mesh (0.15 mm), and the minimum particle size can reach 1000 mesh (15 μm) and above. Because the granularity of the dry starch is small and even smaller than that of the dust, the dry starch can be uniformly mixed with the dust, and the dust particles can be bonded together through the viscous activation of water to form a solid bonding layer.
The beneficial effects are that:
1. by utilizing the strong viscosity and the micropelletize of the dry starch, the dust and sand can be effectively combined together, so that the dust and sand are converted into a block body which is adhered from flowing powder, the flowing and floating of the dust and sand are reduced or even eliminated, and the dust and sand pollution prevention effect is very good.
2. By utilizing the easy spraying property of the dry starch, the method provides possibility for the dustproof sand control operation of the dry starch which is simple and effective. The invention has wide application, can be used for preventing and treating dust and sand on a large scale, such as integrally treating desert, and can also be used for treating targeted dust and sand, such as covering treatment of easily-dust substances in road and railway transportation, covering treatment of fly ash generated in steel plants and power plants, and the like.
3. The dry starch is used for dust prevention and sand control, and environmental protection can be achieved, and new pollution to the environment is avoided. The dry starch is a material which is full biomass and is completely derived from nature, can be naturally degraded by microorganisms, and can be naturally degraded by the microorganisms after the sand control function is completed; when the plant growth regulator is applied to desert control, the plant growth regulator can also be converted into growth nutrients of plants and microorganisms; meanwhile, the solid bonding layer formed by the dry starch has good water retention property, can greatly reduce the evaporation of water in the covered dust and sand layer, and provides important convenience for further cooperative control of the desert.
Drawings
FIG. 1 shows the phenomena of dry starch and normal starch respectively and put into water.
(a) Is a phenomenon that common starch is put into water;
(b) Is the phenomenon that dry starch is put into water;
(c) A comparison of the two.
FIG. 2 shows the phenomenon of the binding of dry starch with water into a gum.
FIG. 3 shows the phenomenon that dry starch can be sprayed.
FIG. 4 shows the dry starch of example 1 sprayed on the sand surface and then sprayed.
Fig. 5 is a solid plate junction layer obtained in example 1.
(a) (b) (c) is a solid plate junction layer.
(d) Is a solid plate layer after rain.
Fig. 6 is a phenomenon in the comparative example.
(a) Spraying water after spraying common starch onto sand surface;
(b) Is a phenomenon after the sand layer is dried.
Best mode for carrying out the invention
Example 1
Raw materials: yellow river beach powder sand (dry state, 80 mesh sieving rate 72%,100 mesh sieving rate 57%), dry starch (moisture content 3%,300 mesh) and water.
And (3) a tool: dry starch watering can and water watering can.
Test effective working area: 12X 2m 2
Spraying quantity of dry starch 0.15Kg
(1) Uniformly spraying dry starch on sand surface by using a dry starch spray pot (figure 3); (2) spraying water by a water spray pot to moisten the sand surface. At this time, the dry starch is also wet and dissolved to form a homogenous wet noodle, see fig. 4; (3) After 20 minutes, it was observed that the sand surface formed a solid plate layer, the plate was dense and formable, see fig. 5 (a), (b) and (c); (4) After two days, rainfall is 7.8mm, after rain, sand in other surrounding places is observed to be dried, and most of experimental areas still keep moist, so that a hardened layer formed by dry starch has good water retention; (5) After two more days the entire sand surface was dried and the solid layer of the plate remained hardened, see fig. 5 (d). It is indicated that proper precipitation does not cause complete destruction of the solid plate layer.
Comparative example
Raw materials: yellow river beach powder sand (dry state, 80 mesh sieving rate 72%,100 mesh sieving rate 57%), commercial starch (outsourcing, water content 14%,.
And (3) a tool: dry starch watering can 1, water watering can 2.
Test effective working area: 6X 2m 2
Starch application amount: 0.3Kg
(1) The dry starch watering can not spray common starch on sand surfaces, enlarge gaps and can not spray common starch. Ordinary starch is manually scattered on the sand surface, so that the ordinary starch is difficult to uniformly spread, and the starch part is in a bulk shape, as shown in fig. 6 (a); (2) Wetting the sand surface with starch by using a water spray can, wherein the starch is still clearly visible and is not obviously dissolved; (3) After drying, the construction surface was free of obvious plate caking, sand particles were still powdery, no bonding was seen, see fig. 6 (b); and, the drying time after water spraying is significantly shorter than the same operation time in the examples.
Example 2
Raw materials: yellow river beach powder sand (dry state, 80 mesh sieving rate 72%,100 mesh sieving rate 57%), dry starch (moisture content 3%,300 mesh) and water.
And (3) a tool: dry starch watering can and water watering can.
Test effective working area: 12X 2m 2
Spraying quantity of dry starch 0.4Kg
(1) Spraying water by using a water spray can to moisten the sand surface; (2) Uniformly spraying dry starch on the sand surface by using a dry starch spray pot; the dry starch is adsorbed on the wet sand surface, and part of the dry starch is dissolved; (3) After drying, the dry starch also forms a solid plate layer with the sand surface that is observed.
The dry starch of this example is more consumed and the hardened layer is thinner than that of example 1. The reason is that the coverage rate of the water to the dry starch is low, and the dry starch is less permeated into the sand layer under the action of the water.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (6)
1. The dry starch is applied to the field of dust prevention and sand control.
2. The method for applying dry starch in dustproof and sand control field according to claim 1, comprising the steps of spraying dry starch on the surface of the dust and sand, and then spraying water on the surface of the dust and sand, wherein the spraying amount of water can wet the surface of the dust and sand, and the spraying amount of dry starch can ensure that a solid board layer is formed after the surface of the dust and sand is dried.
3. A solid plate layer obtained according to the method of claim 2.
4. The method for applying dry starch to dust and sand control according to claim 1, comprising the steps of spraying water onto the surface of the dust and sand to wet the surface of the dust and sand, and immediately spraying dry starch onto the surface of the wet dust and sand in an amount to ensure that a solid board layer is formed after the surface of the dust and sand is dried.
5. A solid plate layer obtained according to the method of claim 4.
6. Use of dry starch as claimed in claims 1-5, and a method for its use, a solid plate layer, characterized in that the dry starch has a particle size of more than 100 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210671038.6A CN117248515A (en) | 2022-06-13 | 2022-06-13 | Application of dry starch in dustproof sand control field and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210671038.6A CN117248515A (en) | 2022-06-13 | 2022-06-13 | Application of dry starch in dustproof sand control field and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117248515A true CN117248515A (en) | 2023-12-19 |
Family
ID=89125284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210671038.6A Pending CN117248515A (en) | 2022-06-13 | 2022-06-13 | Application of dry starch in dustproof sand control field and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117248515A (en) |
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2022
- 2022-06-13 CN CN202210671038.6A patent/CN117248515A/en active Pending
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