Low-speed airflow drying equipment

Abstract

The invention discloses low-speed airflow drying equipment. The low-speed airflow drying equipment comprises a hot wind boiler, an induced draft fan, an airflow drying chamber, a gas-material separator and a dust remover, wherein a wind outlet of the hot wind boiler is connected with a wind inlet of the airflow drying chamber by a feeding pipe; a feed port is formed in the feeding pipe; a wind outlet of the airflow drying chamber is connected with the gas-material separator; a waste gas discharge port of the gas-material separator is connected with the dust remover; and a gas outlet of the dust remover is connected with a wind inlet of the hot wind boiler by the induced draft fan. The drying wind speed about 3 m / s is adopted in a drying pipe to realize low-wind-speed airflow drying; the internal structure and the inner wall surface are specially treated, and flow parameters are optimized to reduce the system loss; the equipment has such advantages as low drying wind speed and uniform material heating, effectively improves the water content uniformity of discharged wet materials, and decreases the hardening degree of the wet materials in the machining process by about 1%; the water content range of the dried outlet materials is reduced by 1.5%; and the sample sensing quality is improved.

Description

technical field

[0001] The invention relates to a drying device, in particular to a low-speed airflow drying device. Background technique

[0002] Airflow drying is a continuous high-efficiency solid fluidized drying method. It sends the wet material in the form of mud, powder or block into the hot air flow, and flows with it, so as to obtain the dry product dispersed into granules. The purpose of drying is to remove moisture or solvents from certain raw materials and semi-finished products. As far as the chemical industry is concerned, the purpose is to facilitate packaging, transportation, storage, processing and use of materials. The airflow dryer has the advantages of simple structure, less investment, short drying time and no change of heat-sensitive materials, so it is widely used in industrial production. The traditional airflow dryer has complex structure and poor drying effect. Moreover, the wet product is blown into the knife pipe, causing sticking and sticking ...

Examples

Embodiment 1

[0021] This embodiment provides a low-speed airflow drying device with a structure such as figure 1 As shown, it includes a hot blast boiler 1, an induced draft fan 2, an airflow drying chamber 3, a gas material cyclone separator 4 and a bag filter 5. The air outlet of the hot blast boiler is connected to the air inlet of the airflow drying chamber through a feeding pipeline 7. On the feeding pipeline, There is a feed inlet 6, the air outlet of the airflow drying chamber is connected with the gas material separator, the exhaust gas outlet of the gas material separator is connected with the dust collector, and the air outlet of the dust collector is connected with the air inlet of the hot blast boiler through the induced draft fan; The inner wall of the feeding pipe and air drying chamber is coated with an anti-adhesive coating. The anti-adhesive coating includes the following components in parts by mass: novolac epoxy resin: 55 parts, pigments and fillers: 13 parts, KH560 silan...

Embodiment 2

[0033] This embodiment provides a low-speed airflow drying device, the structure is the same as that of Embodiment 1, the difference lies in the components of the anti-adhesive coating, and the anti-adhesive coating includes the following components in parts by mass: novolac epoxy resin: 57 Parts, pigments and fillers: 14 parts, KH560 silane coupling agent: 5 parts, ethylenediamine curing agent: 5 parts, polyvinyl acetate: 3 parts, ammonium molybdate: 4 parts, polymethylphenylsiloxane: 5 parts, zinc borate: 5 parts, solvent: 31 parts, barium sulfate: 7 parts;

[0034] The solvent is a mixed solvent of cyclohexanone and n-butanol, and the volume ratio of cyclohexanone and n-butanol is 3.5:1; the fineness of the pigment and filler is 150 mesh, and the pigment and filler include the following components in parts by mass: barium sulfate: 16 parts, talcum powder: 8 parts, lead oxide: 8 parts, carbon black: 4 parts, zinc powder: 3 parts;

[0035] The preparation method of the novol...

Embodiment 3

[0045] This embodiment provides a low-speed airflow drying device, the structure is the same as that of Embodiment 1, the difference lies in the components of the anti-adhesive coating, and the anti-adhesive coating includes the following components in parts by mass: novolak epoxy resin: 59 Parts, pigments and fillers: 15 parts, KH560 silane coupling agent: 7 parts, polyamide-650: 7 parts, silicone: 4 parts, ammonium molybdate: 6 parts, acrylic acid: 7 parts, zinc borate: 6 parts, solvent : 38 parts, barium sulfate: 10 parts;

[0046] The solvent is a mixed solvent of cyclohexanone and n-butanol, and the volume ratio of cyclohexanone and n-butanol is 3.5:1; the fineness of the pigment and filler is 200 mesh, and the pigment and filler include the following components in parts by mass: barium sulfate: 18 parts, talcum powder: 10 parts, lead oxide: 10 parts, carbon black: 5 parts, zinc powder: 5 parts;

[0047] The preparation method of the novolac epoxy resin in the anti-adhes...

technical field

[0001] The invention relates to a drying device, in particular to a low-speed airflow drying device. Background technique

[0002] Airflow drying is a continuous high-efficiency solid fluidized drying method. It sends the wet material in the form of mud, powder or block into the hot air flow, and flows with it, so as to obtain the dry product dispersed into granules. The purpose of drying is to remove moisture or solvents from certain raw materials and semi-finished products. As far as the chemical industry is concerned, the purpose is to facilitate packaging, transportation, storage, processing and use of materials. The airflow dryer has the advantages of simple structure, less investment, short drying time and no change of heat-sensitive materials, so it is widely used in industrial production. The traditional airflow dryer has complex structure and poor drying effect. Moreover, the wet product is blown into the knife pipe, causing sticking and sticking ...

Examples

Embodiment 1

[0021] This embodiment provides a low-speed airflow drying device with a structure such as figure 1 As shown, it includes a hot blast boiler 1, an induced draft fan 2, an airflow drying chamber 3, a gas material cyclone separator 4 and a bag filter 5. The air outlet of the hot blast boiler is connected to the air inlet of the airflow drying chamber through a feeding pipeline 7. On the feeding pipeline, There is a feed inlet 6, the air outlet of the airflow drying chamber is connected with the gas material separator, the exhaust gas outlet of the gas material separator is connected with the dust collector, and the air outlet of the dust collector is connected with the air inlet of the hot blast boiler through the induced draft fan; The inner wall of the feeding pipe and air drying chamber is coated with an anti-adhesive coating. The anti-adhesive coating includes the following components in parts by mass: novolac epoxy resin: 55 parts, pigments and fillers: 13 parts, KH560 silan...

Embodiment 2

[0033] This embodiment provides a low-speed airflow drying device, the structure is the same as that of Embodiment 1, the difference lies in the components of the anti-adhesive coating, and the anti-adhesive coating includes the following components in parts by mass: novolac epoxy resin: 57 Parts, pigments and fillers: 14 parts, KH560 silane coupling agent: 5 parts, ethylenediamine curing agent: 5 parts, polyvinyl acetate: 3 parts, ammonium molybdate: 4 parts, polymethylphenylsiloxane: 5 parts, zinc borate: 5 parts, solvent: 31 parts, barium sulfate: 7 parts;

[0034] The solvent is a mixed solvent of cyclohexanone and n-butanol, and the volume ratio of cyclohexanone and n-butanol is 3.5:1; the fineness of the pigment and filler is 150 mesh, and the pigment and filler include the following components in parts by mass: barium sulfate: 16 parts, talcum powder: 8 parts, lead oxide: 8 parts, carbon black: 4 parts, zinc powder: 3 parts;

[0035] The preparation method of the novol...

Embodiment 3

[0045] This embodiment provides a low-speed airflow drying device, the structure is the same as that of Embodiment 1, the difference lies in the components of the anti-adhesive coating, and the anti-adhesive coating includes the following components in parts by mass: novolak epoxy resin: 59 Parts, pigments and fillers: 15 parts, KH560 silane coupling agent: 7 parts, polyamide-650: 7 parts, silicone: 4 parts, ammonium molybdate: 6 parts, acrylic acid: 7 parts, zinc borate: 6 parts, solvent : 38 parts, barium sulfate: 10 parts;

[0046] The solvent is a mixed solvent of cyclohexanone and n-butanol, and the volume ratio of cyclohexanone and n-butanol is 3.5:1; the fineness of the pigment and filler is 200 mesh, and the pigment and filler include the following components in parts by mass: barium sulfate: 18 parts, talcum powder: 10 parts, lead oxide: 10 parts, carbon black: 5 parts, zinc powder: 5 parts;

[0047] The preparation method of the novolac epoxy resin in the anti-adhes...

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