CN111689677A - Drying treatment method and system - Google Patents
Drying treatment method and system Download PDFInfo
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- CN111689677A CN111689677A CN201910200116.2A CN201910200116A CN111689677A CN 111689677 A CN111689677 A CN 111689677A CN 201910200116 A CN201910200116 A CN 201910200116A CN 111689677 A CN111689677 A CN 111689677A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10F—DRYING OR WORKING-UP OF PEAT
- C10F5/00—Drying or de-watering peat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers
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Abstract
The application provides a drying treatment method and a drying treatment system. Wherein the method comprises the following steps: extracting the bound liquid in the to-be-dried material to form free liquid; treating the to-be-dried object into a sheet-shaped to-be-dried object, keeping contact with the sheet-shaped to-be-dried object by using a liquid absorbing piece, and sucking out free liquid from the sheet-shaped to-be-dried object. By the drying treatment method and the drying treatment system, the free liquid of the to-be-dried object can be quickly sucked out, the drying treatment capacity is remarkable, and the cost is low.
Description
Technical Field
The application relates to the technical field of drying treatment, in particular to a drying treatment method and a drying treatment system.
Background
The drying treatment technology is widely applied to various fields, taking sludge dehydration as an example, the sludge has the characteristics of high water content, easy decay, foul smell, large amount of parasitic ova and pathogenic microorganisms, and the like, and secondary pollution can be caused if the sludge is not properly treated and is randomly discharged. After the sludge is concentrated, the water content is generally about 80-95%, and the water is separated from interstitial water in the sludge, the water accounts for about 15-25% of the total content of the sludge, the volume of the dewatered sludge is still large, and the outward transportation or the disposal is still difficult.
The common sludge dewatering devices at home and abroad mainly comprise a spiral-stacked dewaterer, a belt filter press, a plate-frame filter press, a centrifugal dewaterer and a rotary kiln dryer. Wherein, the spiral-stacked dehydrator adopts a traveling ring laminated spiral dehydration mode; the belt filter press and the plate-frame filter press adopt gravity pressurization and extrusion dehydration; the centrifugal dehydrator adopts centrifugal force to dehydrate; the rotary kiln dryer evaporates and dries the water in the sludge by using heat energy.
However, the spiral-stacked dehydrator, the belt filter press, the plate-and-frame filter press and the centrifugal dehydrator have the defects of high water content of treated mud cakes, high equipment noise, small single-machine treatment capacity, high energy consumption, large equipment floor area, difficulty in maintenance, limited application field range and the like; although the rotary kiln dryer can treat mud cakes with low moisture content, the treatment cost is high, the tail gas emission pollution is serious, and the investment cost is high.
Disclosure of Invention
In view of this, the present application provides a drying method and system, which has a significant drying capacity.
Specifically, the purpose of the present application is achieved by one of the following technical solutions:
a drying treatment method, comprising the following steps:
extracting the bound liquid in the to-be-dried material to form free liquid;
providing a liquid absorbing piece, processing the object to be dried into a sheet-shaped object to be dried, keeping the liquid absorbing piece in contact with the sheet-shaped object to be dried, and sucking out free liquid from the sheet-shaped object to be dried by utilizing the liquid absorbing piece.
Optionally, the process of processing the to-be-dried object into the sheet-shaped to-be-dried object and the process of sucking the free liquid out of the sheet-shaped to-be-dried object by using the liquid sucking member are performed synchronously.
Optionally, the process of processing the to-be-dried object into the sheet-shaped to-be-dried object and the process of utilizing the liquid absorbing member to suck out the free liquid from the sheet-shaped to-be-dried object are performed synchronously, and the process includes: make one through external force imbibition piece with treat that the mummification is mutual extrudees to make and treat that the mummification piece forms the mummification thing is treated to the slice, imbibition piece is the free liquid of suction in step.
Optionally, the process of processing the to-be-dried object into the sheet-shaped to-be-dried object and the process of utilizing the liquid absorbing member to suck out the free liquid from the sheet-shaped to-be-dried object are performed synchronously, and the process includes: the liquid absorbing pieces are respectively extruded from the opposite sides by external force to form the sheet-shaped object to be dried, and the liquid absorbing pieces suck out free liquid synchronously.
Optionally, the method further comprises the moving step: moving the liquid absorbing piece, and driving the object to be dried to move along with the liquid absorbing piece by using the liquid absorbing piece; in the moving process, external force always extrudes the object to be dried through the liquid absorbing piece to form a sheet-shaped object to be dried, and the liquid absorbing piece synchronously absorbs free liquid.
Optionally, the extracting the bound liquid in the to-be-dried material to form a free liquid includes: and (3) providing a liquid repellent, and mixing the liquid repellent with the object to be dried to obtain a bound liquid in the object to be dried as a free liquid.
Optionally, the ratio of the liquid repellent to the object to be dried is 1: 10000-2: 1000.
Optionally, the material to be dried and the liquid repellent can be discharged to the liquid absorbing piece at the same time, and the liquid absorbing piece is utilized to synchronously suck out free liquid from the mixture of the material to be dried and the liquid repellent.
Optionally, the thickness of the object to be dried is within the range of 0-50 mm.
Optionally, the thickness of the object to be dried is further selected within the range of 5-25 mm.
Optionally, the liquid absorbing member is made of a nano material, and the composition of the nano material at least comprises any one of the following components: graphene, polyurethane, carbon nano tube, activated carbon, cellulose, nano ceramic, nano powder, starch, ethylene, acetic acid, vinyl ester, APAO, PT 3385, azodicarbonamide, CaCO, dicumyl peroxide, H2O2。
Specifically, the purpose of the present application is achieved by the following two technical solutions: a drying treatment system applying the drying treatment method of any one of the above items, the system comprising:
the object to be dried is placed in the accommodating tank;
the sheet-shaped object to be dried processing device is used for processing the object to be dried into a sheet-shaped object to be dried; and
and the liquid absorbing part is used for keeping contact with the flaky object to be dried and absorbing free liquid from the flaky object to be dried.
Optionally, the system further comprises:
and the moving device is used for moving the liquid absorbing piece, and the liquid absorbing piece is utilized to drive the object to be dried to follow the liquid absorbing piece to move.
The technical scheme provided by the application can achieve the following beneficial effects:
the application provides a drying treatment method and a drying treatment system, wherein the method extracts bound liquid in an object to be dried to form free liquid, the object to be dried is processed into a sheet-shaped object to be dried, and the free liquid is sucked out from the inside of the liquid absorbing piece and the sheet-shaped object to be dried in a contact manner. In the method, the path of the capillary channel is shortened by processing the object to be dried into the sheet-shaped object to be dried, and the liquid absorbing piece is kept in contact with the sheet-shaped object to be dried, so that the free liquid can be quickly absorbed, and the drying processing capacity is improved. The drying treatment system capable of realizing the method has the advantages of simple structure, easy operation and remarkable drying treatment capacity.
Drawings
FIG. 1 is a flow diagram of a drying process according to an exemplary embodiment of the present disclosure;
FIG. 2 is yet another flow diagram of a drying process according to an exemplary embodiment of the present disclosure;
FIG. 3 is yet another flow diagram of a drying process according to an exemplary embodiment of the present disclosure;
FIG. 4 is yet another flow diagram of a drying process according to an exemplary embodiment of the present disclosure;
FIG. 5 is yet another flow diagram of a drying process according to an exemplary embodiment of the present disclosure;
FIG. 6 is yet another flow diagram of a drying process according to an exemplary embodiment of the present disclosure;
fig. 7 is a schematic view of a drying treatment system according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise specified, "front", "back", "lower" and/or "upper", "top", "bottom", and the like are for ease of description only and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The application provides a drying treatment method (hereinafter referred to as a method for short), which can be applied to the fields of sludge, tailings, coal slime dehydration and the like, but is not limited to the fields. The method has the advantages of remarkable drying treatment capacity and low cost.
Specifically, referring to fig. 1, the method includes the following steps:
extracting the bound liquid in the to-be-dried material to form free liquid;
treating the object to be dried into a sheet-shaped object to be dried, keeping the liquid absorbing piece in contact with the sheet-shaped object to be dried, and sucking out free liquid from the sheet-shaped object to be dried by using the liquid absorbing piece.
The method comprises the following steps of extracting a binding liquid in a material to be dried into a free liquid, wherein the binding liquid in the material to be dried can be extracted into the free liquid in a mode of overcoming intermolecular force, the free liquid is a liquid capable of flowing freely, the free liquid can change along with the conditions, after the free liquid is formed, a capillary channel is built in the material to be dried, and the free liquid in the material to be dried can be sucked out by utilizing the siphon effect.
The drying treatment device has the advantages that the drying treatment device can treat the to-be-dried object into the sheet-shaped to-be-dried object, the path of a capillary channel can be shortened, and the liquid absorbing piece is kept in contact with the sheet-shaped to-be-dried object, so that the liquid absorbing piece can quickly and timely suck free liquid out of the sheet-shaped to-be-dried object, the drying treatment capacity is remarkable, and the cost is low.
It should be noted that the "binding solution" as referred to herein includes a surface adsorption solution and a capillary binding solution of solid-phase particles of the material to be dried.
In the drying process, in one embodiment, the process of processing the object to be dried into the sheet-shaped object to be dried and the process of sucking the free liquid from the sheet-shaped object to be dried by using the liquid sucking member can be performed synchronously. The embodiment can save the drying time and further improve the productivity.
Referring to fig. 2, the process of processing the object to be dried into the sheet-shaped object to be dried and the process of sucking the free liquid from the sheet-shaped object to be dried by using the liquid sucking member are performed simultaneously, including the first embodiment: the liquid absorbing piece and the to-be-dried object are mutually extruded through external force, the to-be-dried object is pressed into a sheet-shaped to-be-dried object in the extrusion process, and the liquid absorbing piece is in contact with the to-be-dried object under the action of pressure and can synchronously suck free liquid in the sheet-shaped to-be-dried object.
Referring to fig. 3, the process of processing the object to be dried into the sheet-shaped object to be dried and the process of sucking the free liquid from the sheet-shaped object to be dried by the liquid sucking member are performed simultaneously, and the second embodiment is further included: the liquid absorbing pieces are respectively extruded from the opposite sides by external force to the object to be dried, and similarly, in the extrusion process, the object to be dried is pressed into a sheet-shaped object to be dried, and the liquid absorbing pieces synchronously suck out free liquid in the sheet-shaped object to be dried.
The liquid absorbing member can be made of nano material, and the composition of the liquid absorbing member at least comprises any one of the following components: graphene, polyurethane, carbon nano tube, activated carbon, cellulose, nano ceramic, nano powder, starch, ethylene, acetic acid, vinyl ester, APAO, PT 3385, azodicarbonamide, CaCO, dicumyl peroxide, H2O2。
Further, referring to fig. 4, the method in the present application further includes the following steps: remove imbibition piece, utilize imbibition piece to drive and treat that the mummification thing follows imbibition piece and remove, at the removal in-process, external force is all the time through imbibition piece extrusion and is treated the mummification thing for treat that the mummification thing of mummification formation slice treats the mummification thing, imbibition piece suction free liquid in step.
By adding the moving step, the assembly line operation of extruding the object to be dried into the sheet object to be dried is realized, the continuity of the action of extruding the sheet object to be dried is realized, so that the liquid absorbing piece can be continuously fed, the liquid absorbing piece is utilized to synchronously absorb the free liquid, the continuity of the drying process is realized, and the object to be dried is not detained.
In the drying treatment process, the thickness of the sheet to-be-dried object is an important parameter influencing the drying effect, and in the application, the thickness of the sheet to-be-dried object can be in the range of 0-50 mm. Further, the thickness of the flaky object to be dried can be in the range of 5-25 mm, and the thickness can be verified and analyzed through experiments.
Referring to fig. 5, one embodiment of extracting the binding liquid in the substance to be dried into a free liquid is as follows: providing a liquid repellent agent, and mixing the liquid repellent agent with the object to be dried. The chaotropic agent may be made of a nano material, which is a nano material having water repellency and may be selected from existing conventional materials, and the present application is not limited thereto. After the flooding agent and the object to be dried are mixed, the nano material enters molecules, the intermolecular force is overcome, and the bound liquid is extracted to be free liquid. In an alternative embodiment, the liquid repellent can be mixed with the material to be dried according to the ratio of 1: 10000-2: 1000. Subsequently, verification and analysis will be performed by experiment.
The bound liquid in the matter to be dried is extracted as free liquid, and other embodiments may be adopted, such as providing water absorbing nanometer material to overcome intermolecular force and extract the bound liquid in the matter to be dried into free liquid.
Referring to fig. 6, in the method of the present application, the object to be dried and the liquid repellent can be simultaneously fed to the liquid absorbing member, and the liquid absorbing member is used to simultaneously suck out the free liquid from the mixture of the object to be dried and the liquid repellent. The step realizes the synchronization of the mixing process of the object to be dried and the liquid repellent and the process of sucking the free liquid from the flaky object to be dried by using the liquid sucking piece, thereby saving the premixing time of the object to be dried and the liquid repellent.
Referring to fig. 7, based on the above method, the present application further provides a drying treatment system, where the system applies the above drying treatment method, and the system includes a holding tank, a sheet-shaped to-be-dried object treatment device and a liquid absorbing member, where the to-be-dried object is placed in the holding tank, the sheet-shaped to-be-dried object treatment device is used to treat the to-be-dried object into a sheet-shaped to-be-dried object, the sheet-shaped to-be-dried object treatment device may employ an extrusion device, and the extrusion device may apply an extrusion force to the to-be-dried object.
The liquid absorbing piece is used for keeping contact with the sheet-shaped object to be dried and absorbing free liquid from the sheet-shaped object to be dried. In one embodiment, the sheet-like material to be dried may be processed by a pressing device, such as a pressing roller, but not limited thereto. The sheet-shaped object to be dried processing device simultaneously extrudes the liquid absorbing piece and the object to be dried, in the extrusion process, the object to be dried forms the sheet-shaped object to be dried, and the liquid absorbing piece synchronously sucks out free liquid in the sheet-shaped object to be dried.
The liquid absorbing pieces can be made of water absorbing nano materials, the number of the liquid absorbing pieces is not limited, and the number of the liquid absorbing pieces can be one or two.
Further, the system can also comprise a moving device, the moving device is used for moving the liquid absorbing piece, and the liquid absorbing piece is used for driving the object to be dried to move along with the liquid absorbing piece. In the process that imbibition piece removed, external force passes through all the time imbibition piece extrusion treats the mummification thing in order to form the piece and treats the mummification thing, imbibition piece is free liquid of suction in step.
In addition, the system can also comprise a feeding device, wherein the feeding device is used for synchronously feeding the matter to be dried and the liquid repellent agent into the liquid absorbing piece, so that the mixing process of the matter to be dried and the liquid repellent agent is synchronously carried out with the process of sucking the free liquid out of the matter to be dried by the liquid absorbing piece, and meanwhile, the free liquid is synchronously sucked out by the liquid absorbing piece.
The drying treatment system provided by the application has the advantages of simple structure and easiness in operation.
The following embodiments 1 to 30 perform drying treatment on a dried material according to the technical scheme of the application, and analyze the liquid percentage content and the drying time of the dried material.
In examples 1 to 10, the material to be dried was sludge.
Example 1
Mixing the flooding agent and the sludge according to the proportion of 0.002:1, mixing to enable the bound liquid in the dried material to be free liquid, processing the dried material to be a sheet-shaped dried material with the thickness of 50mm, keeping a liquid absorbing piece in contact with the sheet-shaped dried material, and sucking the free liquid from the sheet-shaped dried material by using the liquid absorbing piece, wherein the drying time of the dried material is 6 seconds, and the percentage content of the liquid in the dried material is 50%.
Example 2
Mixing the flooding agent and the sludge according to the proportion of 0.0018: 1, mixing to enable the bound liquid in the dried material to be free liquid, processing the dried material to be a sheet-shaped dried material with the thickness of 40mm, keeping a liquid absorbing piece in contact with the sheet-shaped dried material, and sucking the free liquid from the sheet-shaped dried material by using the liquid absorbing piece, wherein the drying time of the dried material is 6 seconds, and the percentage content of the liquid in the dried material is 45%.
Example 3
Mixing the flooding agent and the sludge according to the proportion of 0.0018: 1, mixing to make the bound liquid in the dried material become free liquid, processing the dried material into a sheet-shaped dried material with the thickness of 35mm, keeping a liquid absorbing piece in contact with the sheet-shaped dried material, and sucking the free liquid from the sheet-shaped dried material by using the liquid absorbing piece, wherein the drying time of the dried material is 5 seconds, and the percentage content of the liquid in the dried material is 42%.
Example 4
Mixing the flooding agent and the sludge according to the proportion of 0.0015:1, mixing to make the binding liquid in the dried material become free liquid, processing the dried material into a sheet-shaped dried material with the thickness of 30mm, keeping a liquid absorbing piece in contact with the sheet-shaped dried material, and sucking the free liquid from the sheet-shaped dried material by using the liquid absorbing piece, wherein the drying time of the dried material is 5 seconds, and the percentage content of the liquid in the dried material is 40%.
Example 5
Mixing the flooding agent and the sludge according to the proportion of 0.0015:1, mixing to enable the bound liquid in the dried material to be free liquid, processing the dried material to be a sheet-shaped dried material with the thickness of 25mm, keeping a liquid absorbing piece in contact with the sheet-shaped dried material, and sucking the free liquid from the sheet-shaped dried material by using the liquid absorbing piece, wherein the drying time of the dried material is 5 seconds, and the percentage content of the liquid in the dried material is 36.5%.
Example 6
Mixing the flooding agent and the sludge according to the proportion of 0.0012: 1 mixing to make the binding liquid in the dried material become free liquid, processing the dried material into a sheet-shaped dried material with the thickness of 20mm, keeping the liquid absorbing piece in contact with the sheet-shaped dried material, and sucking the free liquid from the sheet-shaped dried material by using the liquid absorbing piece, wherein the drying time of the dried material is 5 seconds, and the percentage content of the liquid in the dried material is 30%.
Example 7
Mixing the flooding agent and the sludge according to the proportion of 0.001:1 mixing to make bound liquid in the sludge become free liquid, processing the sludge into sheet-shaped sludge with the thickness of 15mm, keeping a liquid absorbing piece in contact with the sheet-shaped sludge, and sucking the free liquid from the sheet-shaped sludge by using the liquid absorbing piece, wherein the drying time of a dried material is 5 seconds, and the percentage content of the liquid in the dried material is 27.8%.
Example 8
Mixing the flooding agent and the sludge according to the proportion of 0.0008: 1 mixing to make bound liquid in the sludge become free liquid, processing the sludge into sheet-shaped sludge with the thickness of 10mm, keeping a liquid absorbing piece in contact with the sheet-shaped sludge, and sucking the free liquid from the sheet-shaped sludge by using the liquid absorbing piece, wherein the drying time of a dried material is 5 seconds, and the percentage content of the liquid in the dried material is 22.7 percent.
Example 9
Mixing the flooding agent and the sludge according to the proportion of 0.0003:1 mixing to make bound liquid in the sludge become free liquid, processing the sludge into sheet-shaped sludge with the thickness of 5mm, keeping a liquid absorbing piece in contact with the sheet-shaped sludge, and sucking the free liquid from the sheet-shaped sludge by using the liquid absorbing piece, wherein the drying time of a dried material is 5 seconds, and the percentage content of the liquid in the dried material is 11.5 percent.
Example 10
Mixing the flooding agent and the sludge according to the proportion of 0.0001:1 mixing to make bound liquid in the sludge become free liquid, processing the sludge into sheet-shaped sludge with the thickness of 2mm, keeping a liquid absorbing piece in contact with the sheet-shaped sludge, and sucking the free liquid out of the sheet-shaped sludge by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 8%.
In examples 11 to 20, the material to be dried was tailing slag.
Example 11
Mixing the flooding agent and the tailing slag according to the ratio of 0.002:1 to enable the bound liquid in the to-be-dried object to become free liquid, processing the to-be-dried object into a sheet-shaped to-be-dried object with the thickness of 50mm, keeping the liquid absorbing piece in contact with the sheet-shaped to-be-dried object, and sucking out the free liquid from the sheet-shaped to-be-dried object by using the liquid absorbing piece, wherein the drying time of the dried object is 6 seconds, and the percentage content of the liquid in the dried object is 40%.
Example 12
Mixing the flooding agent and the tailing slag according to the ratio of 0.002:1 to enable the bound liquid in the to-be-dried object to become free liquid, processing the to-be-dried object into a sheet-shaped to-be-dried object with the thickness of 45mm, keeping the liquid absorbing piece in contact with the sheet-shaped to-be-dried object, and sucking out the free liquid from the sheet-shaped to-be-dried object by using the liquid absorbing piece, wherein the drying time of the dried object is 6 seconds, and the percentage content of the liquid in the dried object is 36.7%.
Example 13
Mixing the flooding agent and the tailing slag according to the ratio of 0.0015:1 to enable the binding liquid in the object to be dried to be free liquid, processing the object to be dried into a sheet-shaped object to be dried with the thickness of 40mm, keeping the liquid absorbing piece in contact with the sheet-shaped object to be dried, and sucking out the free liquid from the sheet-shaped object to be dried by using the liquid absorbing piece, wherein the drying time of the object to be dried is 5 seconds, and the percentage content of the liquid in the object to be dried is 32.6%.
Example 14
Mixing the flooding agent and the tailing slag according to the ratio of 0.0015:1 to enable the binding liquid in the object to be dried to be free liquid, processing the object to be dried into a sheet-shaped object to be dried with the thickness of 30mm, keeping the liquid absorbing piece in contact with the sheet-shaped object to be dried, and sucking out the free liquid from the sheet-shaped object to be dried by using the liquid absorbing piece, wherein the drying time of the object to be dried is 5 seconds, and the percentage content of the liquid in the object to be dried is 26.3%.
Example 15
Mixing the flooding agent and the tailing slag according to the ratio of 0.001:1 to enable the binding liquid in the object to be dried to be free liquid, processing the object to be dried into a sheet-shaped object to be dried with the thickness of 25mm, keeping the liquid absorbing piece in contact with the sheet-shaped object to be dried, sucking the free liquid out of the sheet-shaped object to be dried by using the liquid absorbing piece, wherein the drying time of the object to be dried is 5 seconds, and the percentage content of the liquid in the object to be dried is 22.1%.
Example 16
Mixing the flooding agent and the tailing slag according to the ratio of 0.0005:1 to enable the binding liquid in the object to be dried to be free liquid, processing the object to be dried into a sheet-shaped object to be dried with the thickness of 20mm, keeping a liquid absorbing piece in contact with the sheet-shaped object to be dried, and sucking the free liquid out of the sheet-shaped object to be dried by using the liquid absorbing piece, wherein the drying time of the object to be dried is 5 seconds, and the percentage content of the liquid in the object to be dried is 17.5%.
Example 17
Mixing the flooding agent and the tailing slag according to the ratio of 0.0002:1 to enable the binding liquid in the tailing slag to be free liquid, processing the tailing slag into flaky tailing slag with the thickness of 15mm, keeping a liquid absorbing piece in contact with the flaky tailing slag, and sucking out the free liquid from the flaky tailing slag by using the liquid absorbing piece, wherein the drying time of a dried material is 5 seconds, and the percentage content of the liquid in the dried material is 12%.
Example 18
Mixing the liquid repellent with the tailing slag according to the ratio of 0.0002:1 to enable the binding liquid in the tailing slag to be free liquid, processing the tailing slag into flaky tailing slag with the thickness of 10mm, keeping a liquid absorbing piece in contact with the flaky tailing slag, and sucking out the free liquid from the flaky tailing slag by using the liquid absorbing piece, wherein the drying time of a dried material is 5 seconds, and the percentage content of the liquid in the dried material is 10%.
Example 19
Mixing the liquid repellent with the tailing slag according to the ratio of 0.0001:1 to enable the binding liquid in the tailing slag to be free liquid, processing the tailing slag into flaky tailing slag with the thickness of 5mm, keeping a liquid absorbing piece in contact with the flaky tailing slag, and sucking out the free liquid from the flaky tailing slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 6.8%.
Example 20
Mixing the flooding agent and the tailing slag according to the ratio of 0.0001:1 to enable the binding liquid in the tailing slag to be free liquid, processing the tailing slag into flaky tailing slag with the thickness of 2mm, keeping a liquid absorbing piece in contact with the flaky tailing slag, and sucking out the free liquid from the flaky tailing slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 3%.
In examples 21 to 30, the material to be dried was coal slurry.
Example 21
Mixing the flooding agent and the coal slime according to the proportion of 0.002:1, mixing to enable bound liquid in coal slime to become free liquid, processing the coal slime into sheet coal slime with the thickness of 50mm, keeping a liquid suction piece in contact with the sheet coal slime, sucking out the free liquid from the sheet coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 6 seconds, and the percentage content of liquid in the dried substance is 48 percent.
Example 22
Mixing the flooding agent and the coal slime according to the proportion of 0.002:1, mixing to enable bound liquid in coal slime to become free liquid, processing the coal slime into sheet coal slime with the thickness of 45mm, keeping a liquid suction piece in contact with the sheet coal slime, sucking out the free liquid from the sheet coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 6 seconds, and the percentage content of liquid in the dried substance is 45%.
Example 23
Mixing the flooding agent and the coal slime according to the proportion of 0.0015:1, mixing to enable bound liquid in coal slime to become free liquid, processing the coal slime into sheet coal slime with the thickness of 40mm, keeping a liquid suction piece in contact with the sheet coal slime, sucking out the free liquid from the sheet coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 39.4%.
Example 24
Mixing the flooding agent and the coal slime according to the proportion of 0.0015:1, mixing to enable bound liquid in coal slime to become free liquid, processing the coal slime into flaky coal slime with the thickness of 35mm, keeping a liquid suction piece in contact with the flaky coal slime, sucking out the free liquid from the flaky coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 35%.
Example 25
Mixing the flooding agent and the coal slime according to the proportion of 0.001:1, mixing to enable bound liquid in coal slime to become free liquid, processing the coal slime into sheet coal slime with the thickness of 30mm, keeping a liquid suction piece in contact with the sheet coal slime, sucking out the free liquid from the sheet coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 30.3%.
Example 26
Mixing the flooding agent and the coal slime according to the proportion of 0.0008: 1, mixing to enable bound liquid in coal slime to become free liquid, processing the coal slime into flaky coal slime with the thickness of 25mm, keeping a liquid suction piece in contact with the flaky coal slime, sucking out the free liquid from the flaky coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 24.8%.
Example 27
Mixing the flooding agent and the coal slime according to the proportion of 0.0005:1, mixing to enable bound liquid in coal slime to become free liquid, processing the coal slime into sheet coal slime with the thickness of 20mm, keeping a liquid suction piece in contact with the sheet coal slime, sucking out the free liquid from the sheet coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 19.8%.
Example 28
Mixing the flooding agent and the coal slime according to the ratio of 0.0003:1 to enable the bound liquid in the coal slime to be free liquid, processing the coal slime into sheet-shaped coal slime with the thickness of 10mm, keeping a liquid suction member in contact with the sheet-shaped coal slime, sucking out the free liquid from the sheet-shaped coal slime by using the liquid suction member, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 15%.
Example 29
Mixing the flooding agent and the coal slime according to the ratio of 0.0002:1 to enable bound liquid in the coal slime to be free liquid, processing the coal slime into flaky coal slime with the thickness of 5mm, keeping a liquid suction member in contact with the flaky coal slime, sucking out the free liquid from the flaky coal slime by using the liquid suction member, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 11.3%.
Example 30
Mixing the flooding agent and the coal slime according to the ratio of 0.0001:1 to enable bound liquid in the coal slime to be free liquid, processing the coal slime into flaky coal slime with the thickness of 2mm, keeping a liquid suction piece in contact with the flaky coal slime, sucking out the free liquid from the flaky coal slime by using the liquid suction piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 4.2%.
In the above embodiments 1 to 30, when the repellent agent is mixed with the material to be dried according to the ratio (1/10000 to 2/1000), the material to be dried is processed into the sheet-shaped material to be dried with the thickness dimension of 0 to 50mm, the drying time of the dried material is less than 6 seconds, and the percentage content of the liquid in the dried material is less than 50%.
In order to make the effect of the above examples more prominent, the drying time and the percentage of liquid in the dried product in examples 1 to 30 and comparative examples 1 to 2 are shown in table 1.
TABLE 1
As can be seen from Table 1, when the flooding agent and the to-be-dried material are mixed in a ratio of 1/10000-2/1000, and the thickness of the flaky to-be-dried material is 0-50 mm, compared with a comparative example, the drying time is obviously shortened, the liquid percentage content of the dried material is obviously reduced, and the drying effect and efficiency are obviously improved.
Further, in order to reduce the difficulty of handling the sheet-like dried material, the thickness of the sheet-like dried material may be set in the range of 5mm to 25 mm.
When the to-be-dried material is the water slag, the solution repellent can be omitted, and the to-be-dried material is only processed into the sheet-shaped belt-like dried material, which is described in embodiments 31 to 40 below with reference to table 1.
Processing the granulated slag into flaky granulated slag with the thickness of 50mm, keeping the liquid absorbing piece in contact with the flaky granulated slag, and sucking free liquid out of the flaky granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 6 seconds, and the percentage content of liquid in the dried substance is 40%.
Example 32
Processing the granulated slag into sheet granulated slag with the thickness of 45mm, keeping the liquid absorbing piece in contact with the sheet granulated slag, and sucking free liquid out of the sheet granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 6 seconds, and the percentage content of the liquid in the dried substance is 37.2%.
Example 33
Processing the granulated slag into sheet granulated slag with the thickness of 40mm, keeping the liquid absorbing piece in contact with the sheet granulated slag, and sucking free liquid out of the sheet granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 6 seconds, and the percentage content of liquid in the dried substance is 30.6%.
Example 34
Processing the granulated slag into flaky granulated slag with the thickness of 35mm, keeping the liquid absorbing piece in contact with the flaky granulated slag, and sucking free liquid out of the flaky granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 6 seconds, and the percentage content of the liquid in the dried substance is 28.9%.
Example 35
Processing the granulated slag into sheet granulated slag with the thickness of 30mm, keeping the liquid absorbing piece in contact with the sheet granulated slag, and sucking free liquid out of the sheet granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 23.8%.
Example 36
Processing the granulated slag into 25 mm-thick flaky granulated slag, keeping the liquid absorbing piece in contact with the flaky granulated slag, and sucking free liquid out of the flaky granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 20.1%.
Example 37
Processing the granulated slag into sheet granulated slag with the thickness of 20mm, keeping the liquid absorbing piece in contact with the sheet granulated slag, and sucking free liquid out of the sheet granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 17.6%.
Example 38
Processing the granulated slag into sheet granulated slag with the thickness of 10mm, keeping the liquid absorbing piece in contact with the sheet granulated slag, and sucking free liquid out of the sheet granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of the liquid in the dried substance is 15%.
Example 39
Processing the granulated slag into 5 mm-thick flaky granulated slag, keeping the liquid absorbing piece in contact with the flaky granulated slag, and sucking out free liquid from the flaky granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 8.9%.
Example 40
Processing the granulated slag into flaky granulated slag with the thickness of 2mm, keeping the liquid absorbing piece in contact with the flaky granulated slag, and sucking out free liquid from the flaky granulated slag by using the liquid absorbing piece, wherein the drying time of a dried substance is 5 seconds, and the percentage content of liquid in the dried substance is 3.2%.
Therefore, the drying treatment method and the drying treatment system can greatly improve and shorten the drying time and obviously reduce the liquid percentage content of the dried substance.
The applicant determines the thickness range of the dried substance and the proportion range of the mixture of the flooding agent and the dried substance through a large number of scientific experiments, and the experimental results show that the drying time of the dried substance and the liquid percentage content of the dried substance are both obviously reduced, and the experimental result has breakthrough significance in the field of drying treatment.
The contents of the above-described embodiments or implementations of the present application may be complementary to each other without conflict.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (12)
1. A drying treatment method is characterized by comprising the following steps:
extracting the bound liquid in the to-be-dried material to form free liquid; and
processing the object to be dried into a sheet-shaped object to be dried, keeping the liquid absorbing piece in contact with the sheet-shaped object to be dried, and sucking out free liquid from the sheet-shaped object to be dried by utilizing the liquid absorbing piece.
2. The drying treatment method according to claim 1, wherein the process of treating the to-be-dried object into the sheet-shaped to-be-dried object is performed synchronously with the process of sucking the free liquid from the sheet-shaped to-be-dried object by using the liquid sucking member.
3. The drying process of claim 2 wherein the one liquid absorbing member; the process of treating the matter to be dried into the sheet-shaped matter to be dried and the process of utilizing the liquid absorbing piece to absorb the free liquid out of the sheet-shaped matter to be dried are carried out synchronously, and the process comprises the following steps: make one through external force imbibition piece with wait the mummification thing mutual extrusion, so that wait the mummification formation the thing is waited to the slice, imbibition piece suction free liquid in step.
4. The drying treatment method according to claim 2, wherein the liquid absorbing member is plural; the process of treating the matter to be dried into the sheet-shaped matter to be dried and the process of utilizing the liquid absorbing piece to absorb the free liquid out of the sheet-shaped matter to be dried are carried out synchronously, and the process comprises the following steps: the liquid absorbing parts are respectively extruded from the opposite sides by external force to form the sheet-shaped object to be dried, and the liquid absorbing parts suck out free liquid synchronously.
5. The drying process of claim 2, further comprising the moving step of: moving the liquid absorbing piece, and driving the object to be dried to move along with the liquid absorbing piece by using the liquid absorbing piece; in the moving process, external force always extrudes the object to be dried through the liquid absorbing piece to form a sheet-shaped object to be dried, and the liquid absorbing piece synchronously absorbs free liquid.
6. The drying treatment method according to claim 1, wherein the extracting of the bound liquid in the object to be dried into a free liquid comprises: and (3) providing a liquid repellent, and mixing the liquid repellent with the object to be dried to obtain a bound liquid in the object to be dried as a free liquid.
7. The drying treatment method according to claim 6, wherein the mixing ratio of the liquid repellent to the material to be dried is 1: 10000-2: 1000.
8. The drying treatment method according to claim 6, wherein the material to be dried and the liquid repellent agent can be discharged to the liquid absorbing member at the same time, and the liquid absorbing member is used to suck out the free liquid from the mixture of the material to be dried and the liquid repellent agent synchronously.
9. The drying treatment method according to claim 1, wherein the thickness of the sheet-like object to be dried is in the range of 0 to 50 mm.
10. The drying treatment method according to claim 1, wherein the liquid absorbing member is made of a nanomaterial, and the composition of the nanomaterial comprises at least one of the following:graphene, polyurethane, carbon nano tube, activated carbon, cellulose, nano ceramic, nano powder, starch, ethylene, acetic acid, vinyl ester, APAO, PT 3385, azodicarbonamide, CaCO, dicumyl peroxide, H2O2。
11. A drying treatment system to which the drying treatment method according to any one of claims 1 to 10 is applied, the drying treatment system comprising:
the object to be dried is placed in the accommodating tank;
the sheet-shaped object to be dried processing device is used for processing the object to be dried into a sheet-shaped object to be dried; and
and the liquid absorbing part is used for keeping contact with the flaky object to be dried and absorbing free liquid from the flaky object to be dried.
12. The drying treatment system of claim 11, further comprising:
and the moving device is used for moving the liquid absorbing piece, and the liquid absorbing piece is utilized to drive the object to be dried to follow the liquid absorbing piece to move.
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| CN201910200116.2A CN111689677A (en) | 2019-03-15 | 2019-03-15 | Drying treatment method and system |
| PCT/CN2019/087792 WO2020186620A1 (en) | 2019-03-15 | 2019-05-21 | Drying treatment method and system |
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