Substitution and dehydration method for water contained solid materials and device

A technology for displacement and dehydration of solid materials, applied in chemical methods, chemical instruments and methods, and chemical/physical processes for reacting gaseous media with gaseous media. It can solve problems such as high cost and high production capacity, and unsuitable dehydration and drying of bulk solid materials. , to achieve the effect of energy saving, mild operating conditions and energy saving

Inactive Publication Date: 2010-07-21
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, solvent displacement dehydration is widely used in the dehydration and drying of precision devices, but when dehydrating and drying precision devices, the solvents used are generally unconventional chemical reagents with high cost, small production volume, and toxic side effects, ...

Method used

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  • Substitution and dehydration method for water contained solid materials and device
  • Substitution and dehydration method for water contained solid materials and device
  • Substitution and dehydration method for water contained solid materials and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment is suitable for dehydration of replacement solvents that are liquids at normal temperature and pressure. The schematic diagram of the specific device structure is as follows figure 2 As shown, the device includes: an inert gas cylinder 1, a gas compressor 21, a solvent input device 3, a dehydration device 4, a separation device 5, a condensation recovery device 6, a hot water generator 7, a liquid storage tank 8, and a hot water pump 101 , solvent infusion pumps 102,103. The outlet of the inert gas cylinder 1 is connected with the inlet of the gas compressor 21, and the outlet of the gas compressor 21 is connected with the inlet of the dehydration equipment 4 and the separation equipment 5, so as to provide the required high-pressure gas for the dehydration equipment 4 and the separation equipment 5; the solvent The heating system of the input device 3 is connected with the hot water generator 7, and its solvent inlet g is connected with the liquid solv...

Embodiment 2

[0065] This embodiment is suitable for the dehydration of the replacement solvent (high-pressure liquid) which is a gas at normal temperature and pressure, and the specific device structure schematic diagram is as follows image 3 As shown, the device includes: inert gas cylinder 1, gas compressor 21, solvent input device 3, dehydration device 4, separation device 5, condensation recovery device 6, hot water generator 7, liquid storage tank 8, gas-liquid separation Tank 9, gas compressors 21, 22, hot water pump 101, solvent infusion pumps 102, 103. The outlet of the inert gas cylinder 1 is connected to the inlet of the gas compressor 21, and the outlet of the gas compressor 21 is connected to the inlet of the dehydration equipment 4 and the separation equipment 5, so as to provide the required high-pressure gas for the dehydration equipment 4 and the separation equipment 5; The heating system of the solvent input device 3 is connected with the hot water generator 7, its solven...

Embodiment 3

[0069] This embodiment is suitable for mixing a liquid organic solvent and a surfactant as a replacement solvent, that is, dehydration of a mixed solvent. The solvent is in a similar state to that of the solvent in Example 1, and the same device can be used. The specific device structure diagram is as follows figure 2 As shown, the device includes: an inert gas cylinder 1, a gas compressor 21, a solvent input device 3, a dehydration device 4, a separation device 5, a condensation recovery device 6, a hot water generator 7, a liquid storage tank 8, and a hot water pump 101 , solvent infusion pumps 102,103. The outlet of the inert gas cylinder 1 is connected with the inlet of the gas compressor 21, and the outlet of the gas compressor 21 is connected with the inlet of the dehydration equipment 4 and the separation equipment 5, so as to provide the required high-pressure gas for the dehydration equipment 4 and the separation equipment 5; the solvent The heating system of the inp...

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Abstract

The invention provides a substitution and dehydration method for water contained solid materials and a device. In the method, the material is dehydrated by organic solvents with low boiling point and low latent heat, which are liquid at 0 DEG C to 60 DEG C and 0.1 MPa to 3 MPa, such as propane, dichloropropane, epoxy ethane, dimethyl ether, dimethyl sulphide and a mixture thereof or a mixture of the organic solvents and a surface active agent with low adsorbability and low latent heat, in dehydration equipment through the action of leaching, absorbing, substituting and the like and liquid-solid separation. The solvents and water can be separated and recycled by evaporating water bearing solvents in separation equipment and condensating the solvents in condensation recovery equipment or layering the solvents and water. Because the latent heat of the solvents is far less than that of the water, the solvent substitution and dehydration method and the device thereof of the invention can obviously reduce power consumption in the dehydration process, solve the problems of burning, wall built-up and the like through low operation temperature, and are suitable for dehydration of solid materials with different water contents.

Description

technical field [0001] The invention relates to a method and device for dehydrating solid materials containing water, in particular to a method and device for replacing and dehydrating solid materials containing water with low energy consumption, and can be applied to the fields of energy, light industry, environmental protection, materials, chemical industry and the like. Background technique [0002] In industrial production, many raw materials, intermediate products and products are solid substances with high water content, and the water content is the root cause of high energy consumption, low efficiency, and even processing difficulties in the further processing process. Therefore, the dehydration or drying of high-moisture materials represents a common technology in the process industry and is a high-energy-consuming industrial unit process. [0003] According to the different methods of removing moisture from materials, the dehydration methods of water-containing mate...

Claims

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Application Information

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IPC IPC(8): B01J12/00
Inventor 许光文刘周恩汪印岳君容余剑
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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