CN104141224A - Process for quickly washing spinning cakes - Google Patents
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Abstract
The invention discloses a process for quickly washing spinning cakes. The process comprises the processing steps of washing, dezincing, desulfuration, bleaching and oiling, wherein an impurity removal processing step is added between the desulfuration processing step and the bleaching processing step, and a pH regulation processing step is added between the bleaching processing step and the oiling processing step. The impurity removal processing step and the pH regulation processing step are added in an existing pressure washing process. The impurity removal processing step is mainly used for removing sulfur dissolved in alkaline liquor and positioned on the surfaces of the spinning cakes, the sulfur dissolved in alkaline liquor is washed away by means of the impurity removal processing step, and therefore, yellow spots forming on the spinning cakes are avoided effectively. The pH regulation processing step is used for regulating pH, the pH of the surfaces of the bleached spinning cakes is regulated to acidity, rapid performing of the oiling processing step is facilitated, and oiling effect is improved. Meanwhile, hydrogen peroxide on the surfaces of the spinning cakes can be removed, so that defect spots forming on the spinning cakes caused by the fact that the hydrogen peroxide remains on the spinning cakes are avoided.
Description
Technical field
The present invention relates to viscose filament yarn aftertreatment technology, relate in particular to spinning cake is compressed and washed to treatment process.
Background technology
Spinning cake washing process is the important critical process of operation after viscose rayon, and viscose filament yarn also need pass through a series of post processings and textile process process after being shaped.Its objective is the esterified degree of residue of eliminating strand, remove metallic salt, reduce sulfur content, remove the impurity on strand, improve the structure of long filament, improve appearance luster and the feel of long filament, improve physical mechanical and the chemical property index of long filament, for long filament is applied to weave, prepare.Spinning cake post processing is different because of the use of equipment, is divided into drip washing and compresses and washes two kinds of forms.Drip washing (washing of drip washing car) is with the chemically treated various solution of a large amount of processes, spinning cake to be rinsed, and washes away the impurity on strand.It is from spinning cake outside to spinning cake internal penetration that this kind goes deimpurity method, with drip washing car, washs fault spinning cake, eliminates gradually now; That to compress and wash (Pressure-washing apparatus washing) be that existing treatment process generally adopts and compresses and washes technique with passing through laterally from spinning cake inner side under certain pressure-acting through chemically treated various solution, reaching the object of impurity on eccysis strand
As: publication number CN102505469A open day is that the Chinese invention patent in June 20 in 2012 discloses the processing method of compressing and washing in a kind of viscose filament yarn aftertreatment technology, comprises following processing step: washing: viscose filament yarn is washed; Dezincify: the processing that dezincifies of the viscose filament yarn with the water lotion that contains complexing agent after to washing; Desulfurization: viscose filament yarn is carried out to desulfurization processing with aqueous slkali; Bleaching: viscose filament yarn is carried out to bleaching with bleaching agent; Oil: with finish, viscose filament yarn is carried out to oiling treatment.The present invention can effectively process the Zn compressing and washing in washing process
2+thereby, control on spinning cake and produce hickie.
And for example: publication number is CN102418261A, within open day, be that the Chinese invention patent on April 18th, 2012 discloses a kind of technique of compressing and washing being applicable in protein viscose filament rayon refining, belong to textile industry viscose filament yarn production field.The present invention is intended to solve alkali cleaning step of compressing and washing in flow process of the prior art comes off the protein dissolution on azelon, cause low, the easy dry linting of product strength, the problem of inhomogeneous and the contaminated environment of dyeing, by the improvement to washing process, can either effectively carry out compressing and washing of azelon viscose filament yarn, make again final product intensity high, be difficult for dry linting, even dyeing and free from environmental pollution.
Foregoing invention patent is the washing methods of 14 erect-positions, its objective is by a series of continuous technical process, spinning cake is realized in washing cart and removed the various impurity that adhere on strand, and carry out oiling treatment, to improve strand outward appearance, improve physical and mechanical properties and the processing characteristics of strand.Due to the strand coiling characteristic of spinning cake, cause the sulphur being partly attached on strand to be dissolved in alkali lye and fail by water, to be gone out completely afterwards, be enriched in strand ectonexine and end face, cause spinning cake to produce macula lutea.Meanwhile, above-mentioned technique is long by the time, and water consumption is large, chemical liquid consumption is also larger, and owing to compressing and washing, the improper fault spinning cake that causes is also more.
Summary of the invention
In order to overcome the existing defect that technique exists of compressing and washing, the invention provides the quick washing process of a kind of spinning cake, use this washers' artistic skill to shorten wash time, reduce the consumption of cleaning solution and water, washing spinning cake is out without macula lutea, without fault.
The quick washing process of a kind of spinning cake, comprise washing, dezincification, desulfurization, bleaching and oiling process step, it is characterized in that: between desulfurization and bleaching process step, increase impurity removal process step, between bleaching and oiling process step, increase pH value adjusting process step.
The concrete technology of described impurity removal process step is: with the soft water of 55 ~ 57 ℃, divide five stations to wash spinning cake, every station washing time is 12 ~ 15 minutes, and hydraulic pressure is 0.02 ~ 0.03MPa, and soft water flow is 50 ~ 60m
3/ h, the pH value of soft water is 10 ~ 11.
The concrete technology of described pH value adjusting process step is: with the water lotion that contains acid solution, wash spinning cake, the pH value of water lotion is 6 ~ 7, and the concentration of acid solution is 5.5 ~ 6.5g/l, and the temperature of soft water is 40 ~ 51 ℃, washing time is 12 ~ 15 minutes, and the flow of water lotion is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa.
Described acid solution is multiple-effect acid, and the composition of multiple-effect acid can be hydrochloric acid, sulfuric acid or both mixtures.
The concrete technology of described washing process step is: with soft water, divide three station washing spinning cakes, the temperature of three station washings is 40 ~ 51 ℃, and flow is 50 ~ 60m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and every station washing time is 12 ~ 15 minutes, and the pH value of soft water is 2.0.
The concrete technology of described Dezincification process step is: the processing that dezincifies of the spinning cake with the water lotion that contains complexing agent after to washing process step, and washing temperature is 51 ~ 55 ℃, flow is 50 ~ 60m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and the pH value of water lotion is 5.5, and the concentration of complexing agent is 0.11 ~ 0.12g/l.
Complexing agent is EDTA, NTA or both mixtures.
EDTA is disodium ethylene diamine tetraacetate, and NTA is nitrilotriacetic acid sodium.
The concrete technology of described sulfur removal technology step is: with aqueous slkali, the spinning cake after dezincifying is carried out to desulfurization processing, be specifically divided into two station desulfurization, the temperature of alkali lye is 57 ~ 59 ℃, and flow is 40 ~ 50m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and every station time is 12 ~ 15 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 3.5 ~ 5.5g/l.
Aqueous slkali is sodium hydroxide solution.
The concrete technology of described bleaching process step is: the spinning cake with hydrogen peroxide after to removal of impurities carries out bleaching, and the temperature of hydrogen peroxide is 56 ~ 58 ℃, and flow is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and pH value is 8 ~ 9, and hydrogen peroxide concentration is 0.4 ~ 0.6g/l.
The concrete technology of described oiling process step is: temperature is 40 ~ 45 ℃, and flow is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and pH value is 7 ~ 8, and oil concentration is 3.0 ~ 5.5g/l.
The present invention has the following advantages:
1, the present invention includes washing, dezincification, desulfurization, bleaching and oiling process step, it is characterized in that: between desulfurization and bleaching process step, increase impurity removal process step, between bleaching and oiling process step, increase pH value adjusting process step.The present invention has increased impurity removal process step and pH value adjusting process step existing in compressing and washing technique, impurity removal process step is mainly removed the sulphur in alkali lye that is dissolved in of cake surface, by the effect of this processing step, the sulphur that makes to be dissolved in alkali lye is flushed away, thereby effectively avoid forming macula lutea on spinning cake, the effect of the pH value adjusting process step increasing is to regulate pH value, the pH value of the cake surface after bleaching is adjusted into acidity, be convenient to carrying out fast of oiling process step, with the raising effect that oils, can also remove the hydrogen peroxide on cake surface simultaneously, avoid because hydrogen peroxide residue is on spinning cake, cause that flaw point appears in spinning cake.
2, the concrete technology of impurity removal process step of the present invention is: with the soft water of 55 ~ 57 ℃, divide five stations to wash spinning cake, every station washing time is 12 ~ 15 minutes, and hydraulic pressure is 0.02 ~ 0.03MPa, and soft water flow is 50 ~ 60m
3/ h, the pH value of soft water is 10 ~ 11.With the soft water of 55 ~ 57 ℃, divide four stations to wash spinning cake, every station washing time is 12 ~ 15 minutes, five stations are washed altogether 60 ~ 75 minutes, during this period of time, spinning cake is rinsed repeatedly, fully guarantees that the sulphur being dissolved in alkali lye of cake surface is all washed away by soft water, and the soft water of 55 ~ 57 ℃ is the strongest to being dissolved with the alkali lye dirty removal capacities of sulphur, hydraulic pressure is 0.02 ~ 0.03MPa, and soft water flow is 50 ~ 60m
3/ h, the control of hydraulic pressure and flow guarantees that soft water effectively washes away the alkali lye that contains sulphur, can not thrust spinning cake simultaneously, causes fracture of wire.The concrete technology of pH value adjusting process step is: with the water lotion that contains acid solution, wash spinning cake, the pH value of water lotion is 6 ~ 7, and the concentration of acid solution is 5.5 ~ 6.5g/l, and the temperature of soft water is 40 ~ 51 ℃, and washing time is 12 ~ 15 minutes, and the flow of water lotion is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa.The pH value of water lotion is 6 ~ 7, the concentration of acid solution is 5.5 ~ 6.5g/l, the temperature of soft water is 40 ~ 51 ℃, by such water lotion, compress and wash spinning cake, reduce the pH value of the rear spinning cake of bleaching, be beneficial to normally carrying out of oiling process, waste liquid after the control assurance of acid strength is compressed and washed is to the little effect that also guarantees to reach reduction pH value of environmental pollution around simultaneously, the time that this processing step is processed is 12 ~ 15 minutes, each local pH value of spinning cake is adjusted to and met the condition oiling, reduce and compress and wash the time simultaneously, reduce the consumption of water lotion.
3, the concrete technology of washing process step is: with soft water, divide three station washing spinning cakes, the temperature of three station washings is 40 ~ 51 ℃, and flow is 50 ~ 60m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and every station washing time is 12 ~ 15 minutes, and the pH value of soft water is 2.0.This processing step is the first step that spinning cake compresses and washes, its objective is and remove the various impurity of spinning cake on moulding rear surface, this step is divided into three stations, and to wash every station washing time be 12 ~ 15 minutes, and three stations are washed 36 ~ 45 minutes altogether, soft water recycles with a water pump, reduces the use amount of soft water.
4, the concrete technology of Dezincification process step is: the processing that dezincifies of the spinning cake with the water lotion that contains EDTA after to washing process step, and washing temperature is 51 ~ 55 ℃, flow is 50 ~ 60m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and the concentration that the pH value of water lotion is 5.5, EDTA is 0.11 ~ 0.12g/l.This processing step is the zinc of removing on cake surface, is guaranteeing, except the use amount that reduces water lotion in dezincify, to reduce the consumption of water.
5, the concrete technology of sulfur removal technology step is: with aqueous slkali, the spinning cake after dezincifying is carried out to desulfurization processing, be specifically divided into two station desulfurization, the temperature of alkali lye is 57 ~ 59 ℃, and flow is 40 ~ 50m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and every station time is 12 ~ 15 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 3.5 ~ 5.5g/l.The effect of this processing step is desulfurization, and it is good that the temperature of alkali lye is controlled at the desulfurized effect of 57 ~ 59 ℃, and flow is 40 ~ 50m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, every station time is 12 ~ 15 minutes, guarantees that desulfurization is thorough, and the sulphur-containing substance of cake surface is all removed.
6, the concrete technology of bleaching process step is: the spinning cake with hydrogen peroxide after to removal of impurities carries out bleaching, and the temperature of hydrogen peroxide is 56 ~ 58 ℃, and flow is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and pH value is 8 ~ 9, and hydrogen peroxide concentration is 0.4 ~ 0.6g/l.The effect of bleaching process step is the quality of improving spinning cake, and the control of these parameters is that when guaranteeing that bleaching effect is good, overbleaching, does not produce the strand that composite diameter does not require.
7, the concrete technology of oiling process step is: temperature is 40 ~ 45 ℃, and flow is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and pH value is 7 ~ 8, and oil concentration is 3.0 ~ 5.5g/l.Finish is attached on strand surface, improves its physical property.
8, the present invention includes washing, dezincification, desulfurization, removal of impurities, bleaching, pH value set-up procedure and oiling process step, washing by 1,2,3 stations complete, dezincify by 4 stations complete, desulfurization by 5,6 stations complete, removal of impurities completes by 7,8,9,10,11 stations, bleaching is completed by 12 stations, pH value set-up procedure 13 stations complete, oil and completed by 14 stations, totally 14 stations complete whole washing process, every station time is 12 ~ 15 minutes, 14 stations share 168 ~ 210 minutes time, whole technique is carried out continuously, and the amount that 14 stations consume soft water is altogether 124 ~ 190m
3, the alkali of consumption is 64 ~ 137.5kg, the acid solution of consumption is 33 ~ 65kg, consume for hydrogen peroxide be 2.4 ~ 6kg.
The specific embodiment
Embodiment 1
The present embodiment is divided into 14 station washing process, and being respectively 1-3 station is washing process, and 4 stations are Dezincification process, and 5-6 station is that sulfur removal technology, 7-11 station are impurity removal process, and 12 stations are bleaching process, and 13 stations are pH value adjusting process, and 14 stations are oiling process.
The temperature of 1-3 station washing is 40 ℃, and flow is 50m
3/ h, hydraulic pressure is 0.03MPa, and every station washing time is 12 minutes, and the pH value of soft water is 2.0.
4 stations are the processing that dezincifies of the spinning cake after to washing process step with the water lotion that contains complexing agent, and washing temperature is 55 ℃, and flow is 60m
3/ h, hydraulic pressure is 0.02MPa, and the time is 13 minutes, and the pH value of water lotion is 5.5, and the concentration of complexing agent is 0.11g/l.
Complexing agent is EDTA.
5-6 station is carried out desulfurization processing with aqueous slkali to the spinning cake after dezincifying, and the temperature of alkali lye is 59 ℃, and flow is 45m
3/ h, hydraulic pressure is 0.03MPa, and every station time is 13.5 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 5.5g/l.
Aqueous slkali is sodium hydroxide solution.
7-11 divides five stations to wash spinning cake with the soft water of 56 ℃ in station, and every station washing time is 12 minutes, and hydraulic pressure is 0.025MPa, and soft water flow is 52m
3/ h, the pH value of soft water is 11.
With hydrogen peroxide, the spinning cake after to removal of impurities carries out bleaching at 12 stations, and the temperature of hydrogen peroxide is 56 ℃, and flow is 32m
3/ h, hydraulic pressure is 0.02MPa, and the time is 12 minutes, and pH value is 8, and hydrogen peroxide concentration is 0.45g/l.
Spinning cake is washed with the water lotion that contains acid solution in 13 stations, and the pH value of water lotion is 7, and the concentration of acid solution is 5.59g/l, and the temperature of soft water is 44 ℃, and washing time is 13.5 minutes, and the flow of water lotion is 36m
3/ h, hydraulic pressure is 0.028MPa.
14 station oiling process: temperature is 45 ℃, and flow is 38m
3/ h, hydraulic pressure is 0.02MPa, and the time is 12 minutes, and pH value is 7.6, and oil concentration is 3.8g/l.
Embodiment 2
The present embodiment is divided into 14 station washing process, and being respectively 1-3 station is washing process, and 4 stations are Dezincification process, and 5-6 station is that sulfur removal technology, 7-11 station are impurity removal process, and 12 stations are bleaching process, and 13 stations are pH value adjusting process, and 14 stations are oiling process.
The temperature of 1-3 station washing is 42 ℃, and flow is 58m
3/ h, hydraulic pressure is 0.028MPa, and every station washing time is 14 minutes, and the pH value of soft water is 2.0.
4 stations are the processing that dezincifies of the spinning cake after to washing process step with the water lotion that contains complexing agent, and washing temperature is 53 ℃, and flow is 54m
3/ h, hydraulic pressure is 0.03MPa, and the time is 14 minutes, and the pH value of water lotion is 5.5, and the concentration of complexing agent is 0.11g/l.
Complexing agent is NTA.
5-6 station is carried out desulfurization processing with aqueous slkali to the spinning cake after dezincifying, and the temperature of alkali lye is 59 ℃, and flow is 41m
3/ h, hydraulic pressure is 0.029MPa, and every station time is 14 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 3.58g/l.
Aqueous slkali is sodium hydroxide solution.
7-11 divides five stations to wash spinning cake with the soft water of 56.5 ℃ in station, and every station washing time is 15 minutes, and hydraulic pressure is 0.03MPa, and soft water flow is 55m
3/ h, the pH value of soft water is 11.
With hydrogen peroxide, the spinning cake after to removal of impurities carries out bleaching at 12 stations, and the temperature of hydrogen peroxide is 57 ℃, and flow is 35m
3/ h, hydraulic pressure is 0.02MPa, and the time is 12 minutes, and pH value is 9, and hydrogen peroxide concentration is 0.4g/l.
Spinning cake is washed with the water lotion that contains acid solution in 13 stations, and the pH value of water lotion is 7, and the concentration of acid solution is 5.5g/l, and the temperature of soft water is 48 ℃, and washing time is 13.5 minutes, and the flow of water lotion is 30m
3/ h, hydraulic pressure is 0.02MPa.
14 station oiling process: temperature is 44 ℃, and flow is 37m
3/ h, hydraulic pressure is 0.029MPa, and the time is 15 minutes, and pH value is 7, and oil concentration is 4.4g/l.
Embodiment 3
The present embodiment is divided into 14 station washing process, and being respectively 1-3 station is washing process, and 4 stations are Dezincification process, and 5-6 station is that sulfur removal technology, 7-11 station are impurity removal process, and 12 stations are bleaching process, and 13 stations are pH value adjusting process, and 14 stations are oiling process.
The temperature of 1-3 station washing is 51 ℃, and flow is 52m
3/ h, hydraulic pressure is 0.02MPa, and every station washing time is 12 minutes, and the pH value of soft water is 2.0.
4 stations are the processing that dezincifies of the spinning cake after to washing process step with the water lotion that contains complexing agent, and washing temperature is 51 ℃, and flow is 50m
3/ h, hydraulic pressure is 0.02MPa, and the time is 12 minutes, and the pH value of water lotion is 5.5, and the concentration of complexing agent is 0.11g/l.
Complexing agent is the mixture of EDTA and NTA.
5-6 station is carried out desulfurization processing with aqueous slkali to the spinning cake after dezincifying, and the temperature of alkali lye is 57 ℃, and flow is 40m
3/ h, hydraulic pressure is 0.02MPa, and every station time is 12 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 3.5g/l.
Aqueous slkali is sodium hydroxide solution.
7-11 divides five stations to wash spinning cake with the soft water of 55 ℃ in station, and every station washing time is 12 minutes, and hydraulic pressure is 0.02MPa, and soft water flow is 50m
3/ h, the pH value of soft water is 11.
With hydrogen peroxide, the spinning cake after to removal of impurities carries out bleaching at 12 stations, and the temperature of hydrogen peroxide is 56 ℃, and flow is 30m
3/ h, hydraulic pressure is 0.02MPa, and the time is 12 minutes, and pH value is 8, and hydrogen peroxide concentration is 0.4g/l.
Spinning cake is washed with the water lotion that contains acid solution in 13 stations, and the pH value of water lotion is 6, and the concentration of acid solution is 5.5g/l, and the temperature of soft water is 40 ℃, and washing time is 12 minutes, and the flow of water lotion is 30m
3/ h, hydraulic pressure is 0.02MPa.
14 station oiling process: temperature is 40 ℃, and flow is 30m
3/ h, hydraulic pressure is 0.02MPa, and the time is 12 minutes, and pH value is 7, and oil concentration is 3.0g/l.
Embodiment 4
The present embodiment is divided into 14 station washing process, and being respectively 1-3 station is washing process, and 4 stations are Dezincification process, and 5-6 station is that sulfur removal technology, 7-11 station are impurity removal process, and 12 stations are bleaching process, and 13 stations are pH value adjusting process, and 14 stations are oiling process.
The temperature of 1-3 station washing is 51 ℃, and flow is 60m
3/ h, hydraulic pressure is 0.03MPa, and every station washing time is 15 minutes, and the pH value of soft water is 2.0.
4 stations are the processing that dezincifies of the spinning cake after to washing process step with the water lotion that contains complexing agent, and washing temperature is 55 ℃, and flow is 60m
3/ h, hydraulic pressure is 0.03MPa, and the time is 15 minutes, and the pH value of water lotion is 5.5, and the concentration of complexing agent is 0.12g/l.
Complexing agent is EDTA.
5-6 station is carried out desulfurization processing with aqueous slkali to the spinning cake after dezincifying, and the temperature of alkali lye is 59 ℃, and flow is 50m
3/ h, hydraulic pressure is 0.03MPa, and every station time is 15 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 5.5g/l.
Aqueous slkali is sodium hydroxide solution.
7-11 divides five stations to wash spinning cake with the soft water of 57 ℃ in station, and every station washing time is 15 minutes, and hydraulic pressure is 0.03MPa, and soft water flow is 60m
3/ h, the pH value of soft water is 11.
With hydrogen peroxide, the spinning cake after to removal of impurities carries out bleaching at 12 stations, and the temperature of hydrogen peroxide is 58 ℃, and flow is 40m
3/ h, hydraulic pressure is 0.03MPa, and the time is 15 minutes, and pH value is 9, and hydrogen peroxide concentration is 0.6g/l.
Spinning cake is washed with the water lotion that contains acid solution in 13 stations, and the pH value of water lotion is 7, and the concentration of acid solution is 6.5g/l, and the temperature of soft water is 51 ℃, and washing time is 15 minutes, and the flow of water lotion is 40m
3/ h, hydraulic pressure is 0.03MPa.
14 station oiling process: temperature is 45 ℃, and flow is 40m
3/ h, hydraulic pressure is 0.03MPa, and the time is 15 minutes, and pH value is 8, and oil concentration is 5.5g/l.
Embodiment 5
The present embodiment is divided into 14 station washing process, and being respectively 1-3 station is washing process, and 4 stations are Dezincification process, and 5-6 station is that sulfur removal technology, 7-11 station are impurity removal process, and 12 stations are bleaching process, and 13 stations are pH value adjusting process, and 14 stations are oiling process.
The temperature of 1-3 station washing is 48 ℃, and flow is 55m
3/ h, hydraulic pressure is 0.025MPa, and every station washing time is 13.5 minutes, and the pH value of soft water is 2.0.
4 stations are the processing that dezincifies of the spinning cake after to washing process step with the water lotion that contains complexing agent, and washing temperature is 53.5 ℃, and flow is 55m
3/ h, hydraulic pressure is 0.025MPa, and the time is 13.5 minutes, and the pH value of water lotion is 5.5, and the concentration of complexing agent is 0.11g/l.
Complexing agent is EDTA.
5-6 station is carried out desulfurization processing with aqueous slkali to the spinning cake after dezincifying, and the temperature of alkali lye is 58 ℃, and flow is 45m
3/ h, hydraulic pressure is 0.025MPa, and every station time is 13.5 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 4.2g/l.
Aqueous slkali is sodium hydroxide solution.
7-11 divides five stations to wash spinning cake with the soft water of 56 ℃ in station, and every station washing time is 13.5 minutes, and hydraulic pressure is 0.025MPa, and soft water flow is 55m
3/ h, the pH value of soft water is 10.5.
With hydrogen peroxide, the spinning cake after to removal of impurities carries out bleaching at 12 stations, and the temperature of hydrogen peroxide is 57 ℃, and flow is 35m
3/ h, hydraulic pressure is 0.025MPa, and the time is 13.5 minutes, and pH value is 8.5, and hydrogen peroxide concentration is 0.5g/l.
Spinning cake is washed with the water lotion that contains acid solution in 13 stations, and the pH value of water lotion is 6.5, and the concentration of acid solution is 6.0g/l, and the temperature of soft water is 46 ℃, and washing time is 13.5 minutes, and the flow of water lotion is 35m
3/ h, hydraulic pressure is 0.025MPa.
14 station oiling process: temperature is 43 ℃, and flow is 35m
3/ h, hydraulic pressure is 0.025MPa, and the time is 13.5 minutes, and pH value is 7.5, and oil concentration is 4.2g/l.
Concrete technology of the present invention is as shown in the table
The data that embodiments of the invention draw and the table of comparisons of prior art are as follows:
Claims (9)
1. the quick washing process of spinning cake, comprise washing, dezincification, desulfurization, bleaching and oiling process step, it is characterized in that: between desulfurization and bleaching process step, increase impurity removal process step, between bleaching and oiling process step, increase pH value adjusting process step.
2. the quick washing process of a kind of spinning cake according to claim 1, it is characterized in that: the concrete technology of described impurity removal process step is: with the soft water of 55 ~ 57 ℃, divide five stations to wash spinning cake, every station washing time is 12 ~ 15 minutes, and hydraulic pressure is 0.02 ~ 0.03MPa, and soft water flow is 50 ~ 60m
3/ h, the pH value of soft water is 10 ~ 11.
3. the quick washing process of a kind of spinning cake according to claim 1 and 2, it is characterized in that: the concrete technology of described pH value adjusting process step is: with the water lotion that contains acid solution, wash spinning cake, the pH value of water lotion is 6 ~ 7, the concentration of acid solution is 5.5 ~ 6.5g/l, the temperature of soft water is 40 ~ 51 ℃, washing time is 12 ~ 15 minutes, and the flow of water lotion is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa.
4. the quick washing process of a kind of spinning cake according to claim 3, is characterized in that: the concrete technology of described washing process step is: with soft water, divide three station washing spinning cakes, the temperature of three station washings is 40 ~ 51 ℃, and flow is 50 ~ 60m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and every station washing time is 12 ~ 15 minutes, and the pH value of soft water is 2.0.
5. the quick washing process of a kind of spinning cake according to claim 1, it is characterized in that: the concrete technology of described Dezincification process step is: the processing that dezincifies of the spinning cake with the water lotion that contains complexing agent after to washing process step, washing temperature is 51 ~ 55 ℃, and flow is 50 ~ 60m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and the pH value of water lotion is 5.5, and the concentration of complexing agent is 0.11 ~ 0.12g/l.
6. the quick washing process of a kind of spinning cake according to claim 5, is characterized in that: complexing agent is EDTA, NTA or both mixtures.
7. the quick washing process of a kind of spinning cake according to claim 1, it is characterized in that: the concrete technology of described sulfur removal technology step is: with aqueous slkali, the spinning cake after dezincifying is carried out to desulfurization processing, specifically be divided into two station desulfurization, the temperature of alkali lye is 57 ~ 59 ℃, and flow is 40 ~ 50m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and every station time is 12 ~ 15 minutes, and alkali lye pH value is 12.0, and the concentration of alkali lye is 3.5 ~ 5.5g/l.
8. the quick washing process of a kind of spinning cake according to claim 1, is characterized in that: the concrete technology of described bleaching process step is: the spinning cake with hydrogen peroxide after to removal of impurities carries out bleaching, and the temperature of hydrogen peroxide is 56 ~ 58 ℃, and flow is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and pH value is 8 ~ 9, and hydrogen peroxide concentration is 0.4 ~ 0.6g/l.
9. the quick washing process of a kind of spinning cake according to claim 1, is characterized in that: the concrete technology of described oiling process step is: temperature is 40 ~ 45 ℃, and flow is 30 ~ 40m
3/ h, hydraulic pressure is 0.02 ~ 0.03MPa, and the time is 12 ~ 15 minutes, and pH value is 7 ~ 8, and oil concentration is 3.0 ~ 5.5g/l.
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