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Piston container
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Piston container

Water is an extremely precious resource and cannot be consumed endlessly. Until today, textile dyeing still uses water as the medium.
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Hotline: 013773765769
E-mail: xhy_5858@126.com
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Product description
Parameters
Buffer container: pressure 50MPa, volume 250ML, material 304 can be customized according to customer needs
 
1. Overview:
Water is an extremely precious resource and cannot be consumed endlessly. Until today, textile dyeing still uses water as the medium. Dyeing and finishing is a water-consuming industry in the entire textile industry and a major source of environmental pollution. Therefore, people began to develop new water-free processes, and supercritical fluid dyeing does not use water during the entire dyeing process, does not cause pollution, does not require auxiliary agents, and the residual dyes can be recycled. The supercritical fluid has a large diffusion coefficient and low viscosity, which makes it have good transfer performance. Supercritical fluid has a very low surface tension and is easy to penetrate into the internal structure of the fiber. These characteristics of supercritical fluid determine its superiority as a medium for the dyeing process. Among many substances, CO2 is a non-polar molecule, which is suitable for dyeing hydrophobic synthetic fibers. Among them, polyester is an important synthetic fiber. It has strong hydrophobicity, few dyeing groups, poor moisture absorption, and low swelling in water. Only dyes with small molecular weights are easy to dye, and it is difficult to dye with hydrophilic dyes, and it is not easy to dye deeply to achieve a firm color. Supercritical CO2 dyeing can make the dyes better penetrate into the fiber polyester, which intensifies the polyester. The swelling promotes the diffusion and transfer of dye molecules and accelerates the combination of dye molecules and polyester. Supercritical dyeing technology has good dyeing effects on synthetic fibers. Supercritical dyeing of polar natural fibers is still in the exploratory research stage in my country. The use of supercritical dyeing equipment to dye natural fibers has made some progress.
Comprehensive consideration of the environment and the above technical factors make supercritical CO2 a good choice for the textile industry. The low viscosity and high solubility of supercritical fluids make them of high application value, and can enter very small pores well without the need The driving force of convection between holes.
 
2. Main technical parameters:
1. Volume: Dyeing kettle: volume 1L-500L, dye kettle: volume 0.5L-100L, separation kettle: volume 600mL-250L, high design temperature 150℃
2. Pressure:
Dyeing kettle: max design pressure 50MPa
Dye kettle: max design pressure 50MPa
Separating kettle: max design pressure 20MPa
3. Design temperature:
Dyeing kettle: room temperature -150℃
Dye kettle: room temperature -150℃
Separating kettle: room temperature -85℃
4. Power supply voltage: 380V three-phase four-wire system
Keyword:
container
dyeing
supercritical
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