Device for continuous waterless dyeing of spindles by adoption of high-pressure supercritical fluid technology

Abstract

The invention relates to a device for continuous waterless dyeing of spindles by adoption of high-pressure supercritical fluid technology. The device is composed of spindle trolleys 1 in the number of 50 to 500, a horizontally-placed straight dyeing pipe 2, a hydraulic push rod 3, a dyeing pressurization system 4, a dye ingredient dissolving system 5, a dye recovery and carbon dioxide purifying system 6, a carbon dioxide pressurization system 7, a carbon dioxide storage tank 8, a depressurizing system 9 and a spindle trolley return trajectory 10. Four segments are divided by the dyeing pipe 2 based on operating conditions and respectively connected with a feeding segment 2 of the pressurization system 4, a dyeing segment 2 of the dye ingredient dissolving system, a cleaning segment 2 of the dye recovery and carbon dioxide purifying system and a discharge segment 2 of the depressurizing system in order.The dyeing segment is dyed by adoption of carbon dioxide dissolution dye for positive and opposite dyeing. The cleaning segment is used for cleaning spindles by adoption of clean supercritical fluid carbon dioxide as a cleaning fluid in a reverse flow mode. The discharge section enables pressure of the spindle trolley 1, passing the cleaning segment, to be reduced step by step at normal pressure. The device for continuous waterless dyeing of spindles by adoption of high-pressure supercritical fluid technology is used for waterless dyeing of spindles.

Description

technical field [0001] The invention relates to a device for continuous anhydrous dyeing of spindles by high-pressure supercritical fluid technology. Background technique [0002] my country is the largest producer and exporter of textile and garment products in the world. However, it is well known that the textile industry has caused great pollution to our environment. The impact of the textile industry on the ecological environment is mainly due to the discharge of wastewater. Textile wastewater mainly comes from printing and dyeing wastewater. Various printing and dyeing pollutants are mixed together, which makes the composition of dyeing wastewater extremely complicated, and also makes the treatment of wastewater more difficult. [0003] At present, countries all over the world have successively developed supercritical fluid dyeing technology to replace the method of dyeing with water. [0004] Supercritical fluid dyeing (Supercritical Fluid Dyeing referred to as SFD...

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Problems solved by technology

[0014] (4) Although dyeing only takes one hour, the disassembly and assembly of the high-pressure system, leak detection, air extraction before dyeing, and carbon dioxide extraction after dyeing are all extremely time-consuming tasks

Intermittent operation creates inefficiencies and is difficult to meet the needs of industrial production

[0015] (5) Moreover, frequent loading and unloading will cause frequent fatigue loads, which will greatly affect the safety of equipment

[0026] (9) It is necessary to solve the problem that the spindle trolley leaves the dyeing system safely and still ensures that the entire system maintains a high-pressure seal

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