CN111747629A - Sludge drying treatment method and sludge drying equipment - Google Patents
Sludge drying treatment method and sludge drying equipment Download PDFInfo
- Publication number
- CN111747629A CN111747629A CN202010751144.6A CN202010751144A CN111747629A CN 111747629 A CN111747629 A CN 111747629A CN 202010751144 A CN202010751144 A CN 202010751144A CN 111747629 A CN111747629 A CN 111747629A
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- China
- Prior art keywords
- sludge drying
- shock wave
- hot fluid
- pipeline
- treatment method
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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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- 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
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/10—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge drying treatment method and sludge drying equipment, which comprise a shock wave dryer device body, wherein a feeding device is arranged at the upper part of a shock wave dryer, the main body is connected with a hot fluid inlet pipeline, a shock wave nozzle is arranged in the middle of the inlet pipeline, the outlet of the shock wave nozzle is opposite to the inlet of a feeding hole, a special material target plate is connected in a shell of the body opposite to the nozzle, the dryer body is conical, the lower part of the dryer body is connected with a discharging device and a storage bin, and a hot fluid outlet pipeline is connected above the center of the top. The invention is used in the field of sludge drying, and solves the problems of low heat exchange efficiency, difficult gas-solid separation and need of mechanical stirring of the existing sludge drying equipment.
Description
Technical Field
The invention belongs to the field of sludge drying, and particularly relates to a sludge drying treatment method and sludge drying equipment.
Background
Refer to application No. 201920273121.1 utility model patent: a sludge drying device and a sludge treatment system.
The prior art uses the shock wave technology to fully crush the sludge, and under the heating action of hot fluid, the material sludge is rapidly dried, so that the problem of sludge drying with great difficulty in the environmental protection industry is solved.
However, the drying equipment used in the prior art is simple in form, heat exchange is realized between the solid material and the gaseous hot fluid under the action of the airflow, and in actual large-scale treatment equipment, the solid material naturally settles due to gravity, so that the characteristic of uneven temperature distribution in a working area is formed, and the drying efficiency is reduced.
In order to solve the problem, a paddle type stirring device is usually used in practice to fully mix the materials with the hot fluid in the drying machine, but the design increases the complexity of the equipment, reduces the sealing property, reduces the maintainability and the like.
Due to the shock wave impact effect, the sludge often forms dry slag with uneven granularity, a part of dry slag with small grain size forms dust, the dust is discharged along with airflow, great influence is caused on the subsequent process, a multi-stage dust removal device is often used for removing dust, the air pressure loss is increased, and the equipment complexity is increased.
And the other part of the larger granular dry slag has higher water content (50-60%), is bonded again in the dryer shell to form scale, so that the working efficiency of the dryer is reduced, and the maintenance difficulty is increased.
Disclosure of Invention
The invention solves the problems of low heat exchange efficiency, difficult gas-solid separation and need of mechanical stirring of the existing sludge drying equipment, and can adjust the water content of discharged sludge within a certain range by reasonably adjusting the temperature and flow of hot fluid and adjusting the feeding speed so as to achieve the optimal efficiency and improve the economy.
In order to solve the technical problem, the technical scheme of the invention is realized as follows:
in a first aspect, the invention provides a sludge drying treatment method, which comprises the following steps:
s100: conveying hot fluid to the interior of the drier body through an inlet pipeline;
s200: the shock wave gas impacts and crushes the materials in the inlet pipeline and blows the materials into the drier body to impact the target plate;
s300: the crushed material carries out spiral line movement in the drier body under the action of shock wave gas to complete heat exchange with hot fluid;
s400: the materials which finish the heat exchange are discharged through a discharge hole at the bottom end of the drier body, and the hot fluid is discharged through an outlet pipeline at the upper end in the drier body.
Further, the pressure of the hot fluid is a standard atmospheric pressure, and the temperature is 300-500 ℃; the hot fluid is one of air, steam, oxygen-poor flue gas and nitrogen.
Furthermore, the pressure of the shock wave gas is between 0.5 and 10Mpa, and the temperature is between 200 and 600 ℃; the shock wave gas is one of air, steam, oxygen-poor flue gas and nitrogen.
Furthermore, the particle size of the crushed material is between 0.1mm and 10 mm. The outlet conduit has a hot fluid temperature of at least 120 ℃.
In a second aspect, the present invention further provides a sludge drying apparatus, comprising: the drying machine comprises a drying machine body and a feeding device connected with the upper end of the drying machine body, wherein the feeding device comprises an inlet pipeline, a shock wave pipeline arranged in the inlet pipeline and a feeding hopper connected with the inlet pipeline; the pipe orifice of the shock wave pipeline is positioned below the feed hopper, and the pipe orifice of the shock wave pipeline is provided with a shock wave nozzle.
Further, the drying machine body is conical, or a combination of cylindrical and conical.
Furthermore, a target plate is arranged at the material impact position in the drying machine body; the target plate is a wear-resistant alloy or an alloy substrate and is coated with a wear-resistant coating.
Furthermore, the target plate is detachably connected with the drying machine body.
Furthermore, a cooling and conveying device is arranged at a discharge port at the bottom end of the drying machine body.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of one embodiment of the present invention.
FIG. 2 is a second schematic structural diagram of one embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The invention relates to a sludge drying treatment method and sludge drying equipment, which comprise a shock wave dryer device body, wherein a feeding device is arranged at the upper part of a shock wave dryer, the main body is connected with a hot fluid inlet pipeline, a shock wave nozzle is arranged in the middle of the inlet pipeline, the outlet of the shock wave nozzle is opposite to the inlet of a feeding hole, a special material target plate is connected in a shell of the body opposite to the nozzle, the dryer body is conical, the lower part of the dryer body is connected with a discharging device and a storage bin, and a hot fluid outlet pipeline is connected above the center of. The invention is used in the field of sludge drying, and solves the problems of low heat exchange efficiency, difficult gas-solid separation and need of mechanical stirring of the existing sludge drying equipment.
The technical solution of the present invention is explained in detail with reference to the specific embodiments in the following figures.
As shown in fig. 1 and 2, the invention provides a sludge drying treatment method, which comprises the following steps:
s100: hot fluid is conveyed into the drier body 1 through an inlet pipeline 3;
s200: the shock wave gas impacts and crushes the materials in the inlet pipeline 3 and blows the materials into the drier body 1 to impact the target plate 6;
specifically, the shock wave nozzle generates shock waves which are distributed in a certain physical space to form a shock wave working area, and shock wave gas impacts the target plate 6 to perform secondary impact crushing with the target plate 6 after the shock wave gas collides with the material and the material is crushed.
S300: the crushed material carries out spiral line movement in the drier body 1 under the action of shock wave gas to complete heat exchange with hot fluid;
the broken material is driven by the hot fluid air current, moves with the helix in conical desiccator casing, has increased movement path length for the mud granule has more abundant time to mix with the hot-fluid and carries out the heat exchange, and the material fully stirs with the hot-fluid, has promoted heat exchange efficiency.
S400: the materials which finish the heat exchange are discharged through a discharge hole 7 at the bottom end of the drier body, and the hot fluid is discharged through an outlet pipeline 8 at the upper end in the drier body 1.
Specifically, as the diameter of a cone at the bottom of the drier body is reduced, the rotating angle speed of the hot fluid and the material is increased, under the action of centrifugal force, fully dried solid sludge particles are separated from hot fluid gas, dry sludge downwards falls into a storage bin through a discharging device, and the hot fluid gas carries a small amount of dust, is attracted by negative pressure at an outlet and is discharged from an outlet at the upper part of the drier;
according to the technical scheme, the temperature of the selected material is less than 150 ℃, the water content is lower than 30%, and the water content of the discharged sludge can be adjusted within a certain range by reasonably adjusting the temperature and the flow of the hot fluid and adjusting the feeding speed, so that the optimal efficiency is achieved, and the economy is improved.
Optionally, in the technical scheme of the invention, the pressure of the hot fluid is a standard atmospheric pressure, and the temperature is 300-500 ℃; of course, the pressure and temperature of the hot fluid can also be adjusted according to actual conditions to meet different requirements.
Optionally, the hot fluid is one of air, steam, oxygen-depleted flue gas and nitrogen.
It can be understood that in the technical scheme of the invention, in order to perform primary crushing on the material, the material needs to be subjected to primary crushing by airflow with certain pressure intensity, so that the pressure intensity of the shock wave gas is between 0.5 and 10Mpa, meanwhile, the material can be dried at high temperature in the crushing process, and the temperature of the shock wave gas is between 200 and 600 ℃;
optionally, the shock gas is one of air, steam, oxygen-deficient flue gas, and nitrogen.
It can be understood that in the technical scheme of the invention, the material is crushed by the shock wave gas and impacted with the target plate, the material is crushed under the dual actions of gas impact and mechanical impact, and the particle size of the crushed material is between 0.1mm and 10 mm.
Optionally, the technical scheme of the invention can also adjust the sludge crushing degree by reasonably adjusting the feeding speed and the pressure and the temperature of the shock wave gas.
It can be understood that in the technical solution of the present invention, in order to ensure sufficient heat exchange between the hot fluid and the material in the dryer body, the temperature of the hot fluid must not be too low, and the temperature of the hot fluid can be measured at the outlet pipe, so that the temperature of the hot fluid measured by the outlet pipe is at least 120 ℃.
The invention also provides sludge drying equipment, which comprises: the drying machine comprises a drying machine body 1 and a feeding device 2 connected with the upper end of the drying machine body, wherein the feeding device comprises an inlet pipeline 3, a shock wave pipeline 4 arranged in the inlet pipeline 3 and a feeding hopper 5 connected with the inlet pipeline 3; wherein, the mouth of pipe of shock wave pipeline 4 is located feeder hopper 5 below, the mouth of pipe of shock wave pipeline 4 is equipped with the shock wave nozzle.
Optionally, the drying machine body 1 may be designed into different shapes according to actual situations, in the technical scheme of the present invention, the drying machine body is conical, or a combination of cylindrical and conical, and of course, in the present invention, the drying machine body is not limited at all
Optionally, in the technical scheme of the invention, a target plate 6 is arranged at a material impact position inside the dryer body 1; the target plate is a wear-resistant alloy or an alloy substrate and is coated with a wear-resistant coating.
Optionally, for the maintenance in later stage, target plate and mummification machine body are detachable connection, easy to overhaul and change.
Optionally, a cooling and conveying device 9 is arranged at a discharge port at the bottom end of the drying machine body. Specifically, after the dry sludge enters the bin, the dry sludge is discharged out of the drier through a discharging device connected to an outlet of the bin. If the material has inflammability, a cooling and conveying device is required to be connected outside the discharging device to safely discharge the material.
Optionally, a manhole is arranged on the body shell of the drying machine, so that people can conveniently go in and out for maintenance.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (10)
1. The sludge drying treatment method is characterized by comprising the following steps:
s100: conveying hot fluid to the interior of the drier body through an inlet pipeline;
s200: the shock wave gas impacts and crushes the materials in the inlet pipeline and blows the materials into the drier body to impact the target plate;
s300: the crushed material carries out spiral line movement in the drier body under the action of shock wave gas to complete heat exchange with hot fluid;
s400: the materials which finish the heat exchange are discharged through a discharge hole at the bottom end of the drier body, and the hot fluid is discharged through an outlet pipeline at the upper end in the drier body.
2. The sludge drying treatment method according to claim 1, wherein the pressure of the hot fluid is a standard atmospheric pressure, and the temperature is 300-500 ℃;
the hot fluid is one of air, steam, oxygen-poor flue gas and nitrogen.
3. The sludge drying treatment method according to claim 1, wherein the pressure of the shock gas is between 0.5 Mpa and 10Mpa, and the temperature is between 200 ℃ and 600 ℃;
the shock wave gas is one of air, steam, oxygen-poor flue gas and nitrogen.
4. The sludge drying treatment method as claimed in claim 1, wherein the particle size of the crushed material is between 0.1mm and 10 mm.
5. The sludge drying treatment method of claim 1, wherein the outlet pipe hot fluid temperature is at least 120 ℃.
6. A sludge drying apparatus, characterized by comprising: the drying machine comprises a drying machine body and a feeding device connected with the upper end of the drying machine body, wherein the feeding device comprises an inlet pipeline, a shock wave pipeline arranged in the inlet pipeline and a feeding hopper connected with the inlet pipeline;
the pipe orifice of the shock wave pipeline is positioned below the feed hopper, and the pipe orifice of the shock wave pipeline is provided with a shock wave nozzle.
7. The sludge drying apparatus of claim 6, wherein the dryer body is conical, or a combination of cylindrical and conical.
8. The sludge drying apparatus of claim 6, wherein a target plate is arranged at the material impact position inside the drying machine body;
the target plate is a wear-resistant alloy or an alloy substrate and is coated with a wear-resistant coating.
9. The sludge drying apparatus of claim 8, wherein the target plate is detachably connected to the dryer body.
10. The sludge drying apparatus as claimed in claim 6, wherein a cooling and conveying device is provided at the discharge outlet at the bottom end of the drying machine body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010751144.6A CN111747629A (en) | 2020-07-30 | 2020-07-30 | Sludge drying treatment method and sludge drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010751144.6A CN111747629A (en) | 2020-07-30 | 2020-07-30 | Sludge drying treatment method and sludge drying equipment |
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| Publication Number | Publication Date |
|---|---|
| CN111747629A true CN111747629A (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010751144.6A Pending CN111747629A (en) | 2020-07-30 | 2020-07-30 | Sludge drying treatment method and sludge drying equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145267A (en) * | 2021-05-08 | 2021-07-23 | 湖南坤元循环科技有限公司 | Spiral cyclone separation device for superfine sand of mud basin system sand solid waste and processing method thereof |
| CN115406215A (en) * | 2022-08-29 | 2022-11-29 | 黑龙江京禾农机装备有限公司 | Intelligent control airflow type straw drying device |
-
2020
- 2020-07-30 CN CN202010751144.6A patent/CN111747629A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145267A (en) * | 2021-05-08 | 2021-07-23 | 湖南坤元循环科技有限公司 | Spiral cyclone separation device for superfine sand of mud basin system sand solid waste and processing method thereof |
| CN115406215A (en) * | 2022-08-29 | 2022-11-29 | 黑龙江京禾农机装备有限公司 | Intelligent control airflow type straw drying device |
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