阅读说明：本技术 一种碳纤维除雾器及其制作工艺 (Carbon fiber demister and manufacturing process thereof ) 是由 陈爱民 吴学荣 庄高明 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种碳纤维除雾器及其制作工艺,本发明涉及除雾器技术领域,包括内网笼和外网笼,内网笼和外网笼之间填充有纤维层,纤维层为碳纤维,通过先选择直径在7～20微米之间不同的碳纤维长丝,将其裁切成7～12毫米长度的碳纤维短丝,将碳纤维短丝分散至团状棉絮状；然后将碳纤维棉填充进内外网笼之间,将碳纤维棉经铺网、搓坯、捣毡、缩绒、挤毡、烘干和高温定型操作制成毛毡,再将做成的毛毡布包裹到内网笼上面,并保证包裹预紧力,最后再套入或包裹上外网笼,具备了使用碳纤维替代玻璃纤维,由于碳元素的化学性质极为稳定,在普遍有机溶剂、酸、碱中均不溶不胀,耐蚀性出类拔萃,因此碳纤维对含有氢氟酸工况的适应性将大大增强的效果。(The invention discloses a carbon fiber demister and a manufacturing process thereof, and relates to the technical field of demisters, wherein the demister comprises an inner cylinder mould and an outer cylinder mould, a fiber layer is filled between the inner cylinder mould and the outer cylinder mould, the fiber layer is carbon fiber, carbon fiber filaments with different diameters of 7-20 micrometers are selected firstly, the carbon fiber filaments are cut into carbon fiber short filaments with the lengths of 7-12 millimeters, and the carbon fiber short filaments are dispersed into bulk cotton; then filling carbon fiber cotton between an inner net cage and an outer net cage, preparing the carbon fiber cotton into felt through lapping, blank rubbing, felt smashing, felting, felt extruding, drying and high-temperature shaping, wrapping the prepared felt cloth on the inner net cage, ensuring the wrapping pretightening force, and finally sleeving or wrapping the felt cloth on the outer net cage.)

1. The utility model provides a carbon fiber defroster, includes interior cylinder mould (3) and outer cylinder mould (1), its characterized in that: a fiber layer (2) is filled between the inner net cage (3) and the outer net cage (1), and the fiber layer (2) is carbon fiber.

2. A process for making a carbon fiber mist eliminator as set forth in claim 1 comprising the steps of:

s1: selecting carbon fiber filaments with different diameters of 7-20 micrometers, and cutting the carbon fiber filaments into carbon fiber short filaments with lengths of 7-12 millimeters;

s2: carding and dispersing the carbon fiber short filaments into bulk cotton;

s3: then carbon fiber cotton is filled between the inner net cage and the outer net cage.

3. The process of making a carbon fiber mist eliminator as set forth in claim 2, wherein: in the step S3, the carbon fiber cotton is made into felt through a series of operations such as lapping, twisting, smashing felt, felting, squeezing felt, drying and high-temperature shaping, the made felt cloth is wrapped on the inner mesh cage in a winding manner, the wrapping pre-tightening force is ensured, the corresponding felt thickness and the number of winding turns are selected to reach the specified demisting layer thickness, and finally the inner mesh cage is sleeved or wrapped.

4. The process of making a carbon fiber mist eliminator as set forth in claim 2, wherein: in the step S3, the carbon fiber cotton with proper weight is weighed according to the expected filling density and then filled between the inner and outer cages by the hydraulic press.

5. The process of making a carbon fiber mist eliminator as set forth in claim 3, wherein: the thickness of the felt is 5-10 mm.

6. The process of making a carbon fiber mist eliminator as set forth in claim 3, wherein: in the high-temperature shaping process, the heating temperature is 480 ℃, and the heating time is 2 hours.

7. The process of making a carbon fiber mist eliminator as set forth in claim 4, wherein: the pressure of the hydraulic press is 10500 Pa, and the carbon fiber cotton is vertically pressed.

Technical Field

The invention relates to the technical field of demisters, in particular to a carbon fiber demister and a manufacturing process thereof.

Background

The fiber demister is an effective demisting device widely adopted internationally, and is composed of a single or a plurality of demisting elements, the fiber demister is mounted in a sulfuric acid dry absorption tower for multiple times to achieve the purpose of removing acid mist, in practical application, most of fiber demister materials used in a sulfuric acid dry absorption section are glass fiber materials, when a hydrofluoric acid working condition is met, fine glass fibers are easy to chemically react with hydrofluoric acid to generate expansion and corrosion phenomena, the demister efficiency is reduced to cause that the smoke emission does not reach the standard, and a cavity is generated inside a fiber layer to cause gas short circuit and finally lead to system shutdown, so that a fiber demister product capable of resisting hydrofluoric acid is urgently needed in the smoke acid making industry.

Disclosure of Invention

The invention aims to provide a carbon fiber demister and a manufacturing process thereof, which has the advantages that carbon fibers are used for replacing glass fibers, the chemical property of carbon elements is very stable, the carbon elements are insoluble and non-swelling in common organic solvents, acids and alkalis, and the corrosion resistance is similar and extracted, so that the adaptability of the carbon fibers to the working condition containing hydrofluoric acid is greatly enhanced, and the problems that when the working condition of the hydrofluoric acid is met, tiny glass fibers are easy to chemically react with the hydrofluoric acid to generate swelling and corrosion phenomena, the efficiency of the demister is reduced to cause that the smoke emission does not reach the standard, and the gas is short-circuited and finally a system is stopped due to the generation of 'cavities' in a fiber layer are solved, so that a fiber demister product capable of resisting the hydrofluoric acid is urgently needed.

In order to achieve the purpose, the invention provides the following technical scheme: the carbon fiber demister comprises an inner cylinder mould and an outer cylinder mould, wherein a fiber layer is filled between the inner cylinder mould and the outer cylinder mould, and the fiber layer is carbon fiber.

The invention provides a manufacturing process of a carbon fiber demister, which comprises the following steps:

s1: selecting carbon fiber filaments with different diameters of 7-20 micrometers, and cutting the carbon fiber filaments into carbon fiber short filaments with lengths of 7-12 millimeters;

s2: carding and dispersing the carbon fiber short filaments into bulk cotton;

s3: then carbon fiber cotton is filled between the inner net cage and the outer net cage.

Optionally, in step S3, the carbon fiber cotton is made into a felt through a series of operations such as lapping, twisting, smashing, felting, extruding, drying, and high-temperature forming, the made felt cloth is wrapped on the inner mesh cage in a winding manner, the wrapping pre-tightening force is ensured, the corresponding felt thickness and the number of winding turns are selected to reach the specified demisting layer thickness, and finally, the felt cloth is sleeved or wrapped on the outer mesh cage.

Optionally, in step S3, the carbon fiber cotton is weighed according to the expected filling density and then filled between the inner and outer cages by a hydraulic press.

Optionally, the thickness of the felt is 5-10 mm.

Optionally, in the high-temperature shaping process, the heating temperature is 480 ℃ and the heating time is 2 hours.

Optionally, the pressure of the hydraulic press is 10500 pa, and the carbon fiber cotton is vertically pressed.

Compared with the prior art, the invention has the following beneficial effects:

the carbon fiber is used for replacing the glass fiber, and because the chemical property of the carbon element is very stable, the carbon element is insoluble and non-swelling in common organic solvents, acids and alkalis, and the corrosion resistance is similar to the extraction, the adaptability of the carbon fiber to the working condition containing hydrofluoric acid is greatly enhanced, and the phenomena that the glass fiber is easy to corrode and perforate when used in the working condition of producing acid from flue gas are solved.

The carbon fiber mist eliminator is used for replacing glass fiber, the tensile strength of the carbon fiber is high, so that the carbon fiber can be made thinner, compared with the glass fiber, the carbon fiber mist eliminator is more beneficial to generation of Brownian motion, can obtain a better mist elimination effect, and can be suitable for more severe acid mist working conditions.

The carbon fiber is used for replacing the glass fiber, the carbon fiber has the characteristic of light weight, the specific gravity of the carbon fiber is only 60% of that of the glass fiber, so the total weight of the carbon fiber with the same volume is lighter, the weight of a demister and a tower body is greatly reduced, and the comprehensive cost of the tower body and civil engineering can be reduced by more than 10%.

The carbon fiber is used for replacing the glass fiber, the carbon fiber has the characteristic of high temperature resistance, compared with the glass fiber which can only resist the temperature below 250 ℃, the use temperature of the carbon fiber can reach 600 ℃, the adaptability of the product is greatly enhanced under certain extreme high-temperature working conditions and driving accidents, and the application field of the product is wider.

According to the invention, the carbon fiber is used for replacing glass fiber, the carbon fiber has higher strength and elastic modulus, and the carbon fiber demister has higher rigidity under the same liquid gravity load, so that the phenomena of mechanical deformation of a mesh cage and lower layer and collapse of a fiber layer are not easily caused.

Drawings

FIG. 1 is a front view of the structure of a first embodiment of the present invention;

FIG. 2 is a partial side cross-sectional view of the structure of the present invention;

FIG. 3 is an enlarged view of the structure A of FIG. 1 according to the present invention;

FIG. 4 is a side view of the structure of the present invention;

fig. 5 is a front view showing the structure of the second embodiment of the present invention.

In the figure: 1. an outer cylinder mould; 2. a fibrous layer; 3. an inner cylinder mould.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In a first embodiment, please refer to fig. 1 to 5, the present invention provides a technical solution: a carbon fiber demister comprises an inner net cage 3 and an outer net cage 1, wherein a fiber layer 2 is filled between the inner net cage 3 and the outer net cage 1, can remove large-particle fog particles in airflow, is effective in removing submicron particles, has certain self-cleaning capability, and can realize zero maintenance, the fiber layer 2 is carbon fiber, and the carbon fiber is used for replacing glass fiber; the carbon fiber has higher tensile strength, so the carbon fiber can be made thinner, and compared with glass fiber, the carbon fiber mist eliminator is more favorable for generating Brownian motion and can obtain better mist elimination effect, so the carbon fiber mist eliminator can be suitable for more harsh acid mist working conditions; the carbon fiber has the characteristic of light weight, the specific gravity of the carbon fiber is only 60 percent of that of the glass fiber, so the total weight of the carbon fiber with the same volume is lighter, the weight of a demister and a tower body is greatly reduced, and the comprehensive cost of the tower body and civil engineering can be reduced by more than 10 percent; the carbon fiber is used for replacing the glass fiber, has the characteristic of high temperature resistance, can only resist the temperature below 250 ℃ compared with the glass fiber, and can reach the use temperature of 600 ℃, so that the adaptability of the product is greatly enhanced under certain extreme high-temperature working conditions and driving accidents, and the application field is wider; the carbon fiber has higher intensity and elastic modulus, and under the same liquid gravity load, the rigidity of the carbon fiber demister is larger, so that the mechanical deformation of the cylinder mould and the phenomena of lower layer and collapse of the fiber layer are not easy to cause.

Referring to fig. 1 to 5, the present invention provides a manufacturing process: a manufacturing process of a carbon fiber demister comprises the following steps:

s1: selecting carbon fiber filaments with different diameters of 7 micrometers, and cutting the carbon fiber filaments into carbon fiber short filaments with the lengths of 7 millimeters;

s2: carding and dispersing the carbon fiber short filaments into bulk cotton;

s3: then carbon fiber cotton is filled between the inner net cage and the outer net cage.

In a second embodiment, please refer to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a carbon fiber defroster, includes interior cylinder mould 3 and outer cylinder mould 1, and it has fibrous layer 2 to fill between interior cylinder mould 3 and the outer cylinder mould 1, and fibrous layer 2 is the carbon fiber.

Referring to fig. 1 to 5, the present invention provides a manufacturing process: a manufacturing process of a carbon fiber demister comprises the following steps:

s1: selecting carbon fiber filaments with different diameters of 13 microns, and cutting the carbon fiber filaments into carbon fiber short filaments with the length of 10 millimeters;

s2: carding and dispersing the carbon fiber short filaments into bulk cotton;

s3: then carbon fiber cotton is filled between the inner net cage and the outer net cage.

In a third embodiment, please refer to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a carbon fiber defroster, includes interior cylinder mould 3 and outer cylinder mould 1, and it has fibrous layer 2 to fill between interior cylinder mould 3 and the outer cylinder mould 1, and fibrous layer 2 is the carbon fiber.

Referring to fig. 1 to 5, the present invention provides a manufacturing process: a manufacturing process of a carbon fiber demister comprises the following steps:

s1: selecting carbon fiber filaments with different diameters of 20 micrometers, and cutting the carbon fiber filaments into carbon fiber short filaments with the lengths of 12 millimeters;

s2: carding and dispersing the carbon fiber short filaments into bulk cotton;

s3: then carbon fiber cotton is filled between the inner net cage and the outer net cage.

In a fourth embodiment, please refer to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a carbon fiber defroster, includes interior cylinder mould 3 and outer cylinder mould 1, and it has fibrous layer 2 to fill between interior cylinder mould 3 and the outer cylinder mould 1, and fibrous layer 2 is the carbon fiber.

Referring to fig. 1 to 5, the present invention provides a manufacturing process: a manufacturing process of a carbon fiber demister comprises the following steps:

s1: selecting carbon fiber filaments with different diameters of 10 micrometers, and cutting the carbon fiber filaments into carbon fiber short filaments with lengths of 9 millimeters;

s2: carding and dispersing the carbon fiber short filaments into bulk cotton;

s3: then carbon fiber cotton is filled between the inner net cage and the outer net cage.

Further, in step S3, the carbon fiber cotton is made into felt through a series of operations such as lapping, twisting, beating felt, felting, squeezing felt, drying and high-temperature shaping, the made felt cloth is wrapped on the inner mesh cage in a winding manner, the wrapping pre-tightening force is ensured, the corresponding felt thickness and the number of winding turns are selected to reach the specified demisting layer thickness, and finally, the felt cloth is sleeved or wrapped on the outer mesh cage, so that the densities of the carbon fibers at different positions are relatively uniform.

Further, in step S3, the carbon fiber cotton with a proper weight is weighed according to the expected filling density, and then filled between the inner mesh cage and the outer mesh cage by using the hydraulic machine, and different filling densities are obtained by adjusting the pressure value of the hydraulic machine during filling, so as to improve the applicability of the equipment.

Furthermore, the thickness of the felt is 5 millimeters, so that the increase of air resistance caused by overlarge thickness of the felt is prevented, and the stability of the equipment in use is improved.

Further, the felt thickness was 7 mm.

Further, the felt thickness was 10 mm.

Furthermore, in the high-temperature shaping process, the heating temperature is 480 ℃, the heating time is 2 hours, and the stress between fibers can be eliminated by carrying out high-temperature shaping on the carbon fibers, so that the subsequent treatment is convenient.

Furthermore, the pressure of the hydraulic press is 10500 Pa, the carbon fiber cotton is vertically pressed, the carbon fiber density is more uniform, the media are more compact, and the working efficiency of the equipment is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.