Drying system for aerogel production by alcohol supercritical method
A drying system and airgel technology, applied in airgel preparation, drying solid materials, drying solid materials without heating, etc., can solve problems such as uneven temperature of equipment, difficulty in cleaning large drying equipment, etc., to reduce the overall pressure , Precise control of supercritical pressure, fast heating and cooling effects
Pending Publication Date: 2018-03-23
陕西盟创纳米新型材料有限责任公司
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Problems solved by technology
[0005] The present invention mainly aims at problems such as the influence of air partial pressure in the drying kettle on the supercritical pressure of alcohol raw materials, uneven temperature inside the equipment, and difficulty in cleaning large-scale drying equipment in the airgel production process, and designs a kind of alcohol supercritical drying equipment and supporting equipment. system,
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[0032] Such as figure 1 with 2 As shown, the drying equipment for producing airgel materials by the supercritical method of the present invention includes a drying kettle and supporting devices. The drying kettle includes a kettle body 1 and a kettle cover 2; the kettle body 1 is an explosive composite plate structure made of stainless steel 304 material. A safety unit is provided at the upper end of the kettle body 1, and the safety unit includes a safety valve 10 and a pressure gauge 11 communicating with the interior of the kettle body, ensuring the safety of the drying system.
[0033] The kettle body 1 is a sandwich structure. The side wall of the kettle body 1 is provided with an air outlet 3 near the upper end. The bottom of the kettle body 1 is provided with an air inlet 5 and a sewage outlet 6. The sewage outlet 6 is used for removing residual substances inside the kettle body. Port 5 is used for gas pressurization. The side wall of still body 1 and kettle lid 2 ar...
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The invention discloses a drying system for aerogel production by an alcohol supercritical method. The drying system comprises a drying kettle and a matching device, the drying kettle comprises a kettle body and a kettle cover in an airtight structure and is provided with an air outlet and an air inlet, and a shelf is arranged in the kettle body and used for placement of aerogel products. The matching device comprises a control unit, a vacuumizing unit, a heating and cooling unit and an alcohol cooling recovery unit, and the vacuumizing unit, the heating and cooling unit and the alcohol cooling recovery unit are communicated through pipelines and valves. The control unit is in electrical connection with the vacuumizing unit, the heating and cooling unit and the alcohol cooling recovery unit. The vacuumizing unit is a vacuum pump communicated with the interior of the kettle body through a pipeline. The drying system has advantages that before drying of wet gel, equipment is internally in a vacuum state, influences of other gases in the equipment on supercritical pressure are eliminated, and accordingly alcohol supercritical pressure is accurately controlled, and aerogel material performances and product qualification rate are guaranteed.
Description
technical field [0001] The invention belongs to the field of airgel material preparation and molding, and in particular relates to a drying device for producing airgel by supercritical alcohol and related supporting systems. Background technique [0002] Airgel refers to a nanoporous material extracted by supercritical technology, which contains a large amount of air inside, with a porosity of up to 99.8% and a specific surface area of 200m 2 ~1000m 2 / g, the pore size is 5-20nm, the density of airgel is extremely low, the minimum can reach 3kg / m3. Its unique micro-nano structure makes it significantly different from the corresponding glass state in terms of mechanics, acoustics, optics, and thermal properties. It is a material with comprehensive properties such as heat insulation, fire prevention, sound absorption, explosion protection, and shock absorption. [0003] At present, the airgel materials produced by domestic and foreign manufacturers are prepared by supercr...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B01J13/00F26B5/04F26B23/10
CPCB01J13/0091F26B5/04F26B23/10Y02P70/10
Inventor 陈国张君孙星星
Owner 陕西盟创纳米新型材料有限责任公司