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Refining process and device for viscose

A technology of viscose fiber and refining equipment, which is applied in fiber processing, plant fiber, liquid/gas/steam fiber/sliver/roving processing, etc. It can solve the problems of easy corrosion of equipment, increase in material and labor costs, and achieve saving Effects of labor, retention of machinery and equipment and design arrangements, and stabilization of the refining process

Active Publication Date: 2016-10-12
CHENGDU GRACE FIBER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Wherein (h) desulfurization, the crude product of natural cellulose film is put into the sodium hydroxide aqueous solution of 0.1~0.5% concentration by mass percentage and soaks for 20~50 seconds to carry out desulfurization treatment, obtains the crude product of natural cellulose film after desulfurization; (i) Bleaching, putting the desulfurized natural cellulose film crude product into an aqueous solution of sodium hypochlorite and soaking it for 20 to 50 seconds at room temperature to obtain the bleached natural cellulose film crude product; A large amount of water washing or pickling is required in the end, which also leads to an increase in material and labor costs, and the equipment is easy to corrode

Method used

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  • Refining process and device for viscose

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Embodiment 1

[0023] A kind of refining process of viscose fiber, this process method is mainly to utilize NaOH desulfurization of viscose fiber, then use H 2 o 2 Proceed to bleach.

[0024] Its process specifically includes the following steps:

[0025] A sends the viscose fiber washed by the first washing station to the desulfurization station, adopts NaOH desulfurization at the desulfurization station, and the viscose fiber after NaOH desulfurization enters the second washing station for washing;

[0026] B sends the viscose fiber washed by the second water washing station to the bleaching station, and uses H in the bleaching station 2 o 2 Bleached by H 2 o 2 The bleached viscose fiber enters the three washing stations for washing.

[0027] Optimizing process: the desulfurization temperature in step A is 85°C-90°C, preferably 85°C, and the bleaching temperature in step B is 60°C-65°C, preferably 62°C. Improve the reactivity of materials.

[0028] It also includes step C: transpor...

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Abstract

The invention discloses a refining process for viscose. The refining process particularly comprises the following steps: the viscose washed in a first water washing station is desulfurized with NaOH, and the viscose desulfurized with NaOH enters a secondary water washing station; the viscose washed in the second water washing station is bleached with H2O2, and the viscose bleached with H2O2 enters a third water washing station to be washed. H2O2 is substituted for NaClO, residual NaOH in the viscose is remarkably reduced, an acid pickling step is omitted in production, and the pH value of applied oil can reach the standard only through water washing, and accordingly, labor is saved, and the refining production process is stabilized.

Description

technical field [0001] The invention relates to the technical field of viscose fiber production, in particular to a refining process and device for viscose fiber. Background technique [0002] Refining is a process in the production process of viscose fiber. From front to back, there are first water washing, desulfurization, second water washing, bleaching, third water washing, and oiling station. In the industry, generally speaking, there are two sets of processes for desulfurization and bleaching, NaOH with NaClO, NaOH 2 S with H 2 o 2 . If NaOH is used for desulfurization, in order to make the fiber whiteness reach the standard (measured by a whiteness meter ≥ 79%), NaClO (strong oxidizing) is used for back-end bleaching, and pickling is added to neutralize the residual NaOH in the fiber; 2 The desulfurization ability of S is better than that of NaOH, and H can be used at the back end 2 o 2 (The oxidation is weaker than NaClO) for bleaching, and there is not much Na...

Claims

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Application Information

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IPC IPC(8): D06L3/02D06M11/38D06B3/02D06B23/20D06M101/06
CPCD06B3/02D06B23/20D06M11/38D06M2101/06
Inventor 江洪王斌
Owner CHENGDU GRACE FIBER