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Production device and preparation process for anhydrous oxalic acid

A production device, a technology for anhydrous oxalic acid, which is applied in heating devices, separation/purification of carboxylic acid compounds, and dry gas layout, etc., can solve the problems of high energy consumption, small output, low yield, etc., and achieve process environmental protection and drying. Precise and scientific effects

Inactive Publication Date: 2010-10-20
TONGLING HENGLU ANHYDROUS OXALATE
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  • Abstract
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Problems solved by technology

Their common defects are low yield, small output, high energy consumption, large fluctuations in product quality, easy to cause environmental pollution, and it is not suitable for long-term on-site operations.

Method used

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  • Production device and preparation process for anhydrous oxalic acid
  • Production device and preparation process for anhydrous oxalic acid
  • Production device and preparation process for anhydrous oxalic acid

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Embodiment Construction

[0016] Referring to the accompanying drawings, a production device for anhydrous oxalic acid includes a support 1, a hot air chamber 2 is arranged above the support 1, a hot air inlet 3 is opened at one end of the hot air chamber 2, the hot air inlet is connected with a hot air inlet pipe, and the air outlet is connected with a The air outlet duct; the other end of the hot air inlet duct is connected with a blower, and the outlet air temperature probe is arranged in the outlet duct, and the outlet air temperature probe is electrically connected with the temperature adjustment switch of the blower fan; the hot air chamber 2 is fixedly installed The drying chamber 5, the hot air chamber 2 and the drying chamber 5 are connected through several pipelines with air volume regulating valves 6, and the two sides of the drying chamber 5 are respectively provided with a negative pressure inlet 7 and an air-closing outlet. 8. There is a slanted hole plate 9 inside the drying chamber 5, an...

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PUM

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Abstract

The invention discloses a production device and a preparation process for anhydrous oxalic acid. The production device comprises a pulse instrument, a hot air inlet, an airflow regulating valve, a negative pressure feed inlet, a thermometer, a window, a manhole, a wind closing discharging machine, an inclined hole plate bed, a filter bag, a material clearing bin and an air outlet. The invention has the advantages of high yield, no pollution, scientific design, reasonable process, suitability for industrial mass production, stable product quality, no discharge, accordance with the requirement of environmental protection and the like.

Description

technical field [0001] The invention relates to the production field of anhydrous oxalic acid, in particular to a production device of anhydrous oxalic acid. Background technique [0002] Anhydrous oxalic acid is obtained by drying common industrial oxalic acid to remove the surface moisture and crystal crystal moisture. At present, the domestic production method basically adopts dry frying in reactor, oven drying and external discharge vibrating fluidized bed to produce and process anhydrous oxalic acid. Their common defects are low yield, small output, high energy consumption, large fluctuations in product quality, easy to cause environmental pollution, and it is not suitable for long-term on-site operations. Contents of the invention [0003] The object of the present invention is to provide a production device of anhydrous oxalic acid and a preparation process thereof, which have the advantages of simple operation, high yield, large output and low energy consumption. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B9/06F26B21/10F26B23/02F26B5/04C07C55/06C07C51/42
Inventor 严顺林
Owner TONGLING HENGLU ANHYDROUS OXALATE
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