CN107620190B - Recycling method and device of cotton fabric bleaching solution - Google Patents
Recycling method and device of cotton fabric bleaching solution Download PDFInfo
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- CN107620190B CN107620190B CN201710972330.0A CN201710972330A CN107620190B CN 107620190 B CN107620190 B CN 107620190B CN 201710972330 A CN201710972330 A CN 201710972330A CN 107620190 B CN107620190 B CN 107620190B
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Abstract
The invention discloses a recycling method and a device of a cotton fabric bleaching solution, which comprises the following steps: recycling the boiling and bleaching high-temperature water; recycling warm water; recycling normal temperature water; the boiled and bleached high-temperature water is recycled for a plurality of times and then is supplemented with recycled warm water, the warm water is recycled for a plurality of times and then is supplemented with recycled normal-temperature water, and the normal-temperature water is recycled for a plurality of times and then is replaced with new soft water. The boiling and bleaching high-temperature water, the warm water and the normal-temperature water in the degreasing and bleaching process of the cotton fabric are respectively recycled, the warm water can be recovered in the high-temperature boiling and bleaching process, and the normal-temperature water can be recovered in the warm water cleaning process, so that the boiling and bleaching high-temperature water, the warm water and the normal-temperature water are fully recycled. The invention realizes the cyclic utilization of resources, reduces the consumption and emission of water resources from the source, reduces the use and emission of chemical additives, reduces the consumption of energy, and belongs to the production process with energy conservation, emission reduction, water conservation, consumption reduction and cleanness.
Description
Technical Field
The invention relates to a technological method for bleaching cotton fabrics, in particular to a method and a device for recycling a bleaching solution for cotton fabrics.
Background
The degreasing and bleaching of cotton fabrics, in particular to medical absorbent gauze and all-cotton non-woven fabrics, are completed in a warp beam scouring and bleaching machine, and the prior degreasing and bleaching process comprises the following steps: putting the rolled gray fabric into a warp beam scouring and bleaching machine, adding water and chemical additives, heating, scouring and bleaching at 105 ℃ for 1.5-2 hours at high temperature, discharging at high temperature, washing with hot water, and finally cleaning with normal-temperature water, taking out and drying.
The whole process has three kinds of water: one is boiling and bleaching high-temperature water, the water discharged after degreasing and bleaching contains a large amount of residual chemical additives, and simultaneously the heat quantity is high, and the water temperature is 100-; the second is hot water washing water which contains surface active substances and has higher heat, and the water temperature is 60-80 ℃; the three are water washed at normal temperature, do not contain heat, but have relatively clean water quality.
In the prior art, three kinds of water are discharged into a sewage treatment system and can be recycled after multi-stage biochemical treatment, so that the recycling cost is high and the recycling time is long. For the discharged water containing heat, the heat energy recycling rate is not high. The degreasing bleaching discharge water (high-temperature water) contains a large amount of available refining agents, alkaline agents and hydrogen peroxide, is not recycled and is directly discharged to a sewage treatment plant, so that the load of the sewage treatment system is increased.
Disclosure of Invention
The application provides a recycling method and a recycling device of cotton fabric bleaching solution, which improve the recycling efficiency of water resources, heat energy and chemical auxiliary agents, save energy, reduce emission, save water, reduce consumption and realize clean production.
According to a first aspect, one embodiment provides a recycling method of a cotton fabric desizing solution, which comprises the following steps:
recycling the boiling and bleaching high-temperature water: introducing the high-temperature water subjected to degreasing and bleaching in the first scouring and bleaching machine into a second scouring and bleaching machine, sequentially supplementing fresh water and chemical auxiliary agents, heating for scouring and bleaching, and introducing the high-temperature water subjected to scouring and bleaching into the first scouring and bleaching machine for recycling or into a first storage tank for later use;
and (3) recycling warm water: guiding the warm water subjected to hot water washing in the first scouring and bleaching machine into a second scouring and bleaching machine, supplementing fresh water, heating and washing with hot water, and guiding the warm water subjected to hot water washing into the first scouring and bleaching machine for recycling or into a second storage tank for later use;
and (3) recycling normal-temperature water: introducing the normal-temperature water washed by the normal-temperature water in the first scouring and bleaching machine into a second scouring and bleaching machine, supplementing fresh water, and introducing the normal-temperature water washed by the normal-temperature water into the first scouring and bleaching machine for recycling or introducing the normal-temperature water into a third storage tank for later use;
the boiled and bleached high-temperature water is recycled for a plurality of times and then is supplemented with recycled warm water, the warm water is recycled for a plurality of times and then is supplemented with recycled normal-temperature water, and the normal-temperature water is recycled for a plurality of times and then is replaced with new soft water.
Further, the boiling and bleaching high-temperature water, the warm water and the normal-temperature water are recycled for 2-5 times respectively, the recycled warm water is replenished after the boiling and bleaching high-temperature water is recycled for 5 times, the recycled normal-temperature water is replenished after the warm water is recycled for 5 times, and the fresh soft water is replaced after the normal-temperature water is recycled for 5 times.
Furthermore, 10% -20% of fresh water is supplemented in each recycling process of the boiling and bleaching high-temperature water, the warm water and the normal-temperature water.
Furthermore, in the process of recycling the boiling and bleaching high-temperature water, after 10-20% of fresh water is supplemented, chemical additives are supplemented after the temperature in the pot is reduced to 70-80 ℃.
Further, chemical auxiliary agents which are recycled and supplemented by the boiling and bleaching high-temperature water comprise a refining agent, an alkaline agent and 20-90% of hydrogen peroxide.
According to the second aspect, an embodiment provides a cyclic utilization device of cotton fabric decoiling liquid, boil and float the machine including first boiling, the second, first storage jar, second storage jar and third storage jar, first boiling floats machine and second and boils and float the machine and pass through pipeline interconnect, first storage jar, second storage jar and third storage jar are boiled through pipeline and first boiling and float machine and second respectively and are boiled and float the machine and be connected, first storage jar is used for the storage to boil and float high-temperature water, the second storage jar is used for storing warm water, the third storage jar is used for storing normal atmospheric temperature water.
Further, still include a plurality of driving pump, install respectively that first boil to float machine and second boil to float between machine, the first storage jar, and second storage jar and third storage jar and first boil to float machine and second boil to float between the machine for the drive transmission is boiled and is floated high-temperature water, warm water and normal atmospheric temperature water.
Furthermore, a heating device, a water level display, a pressure detection device, a thermometer and the like are respectively arranged in the first boiling and bleaching machine and the second boiling and bleaching machine.
According to the recycling method and the device of the cotton fabric bleaching solution, the boiling and bleaching high-temperature water, the warm water and the normal-temperature water in the cotton fabric degreasing and bleaching process are recycled respectively, the warm water can be recycled in the high-temperature boiling and bleaching process, and the normal-temperature water can be recycled in the warm water cleaning process, so that the boiling and bleaching high-temperature water, the warm water and the normal-temperature water are fully recycled, the recycling efficiency of water resources, heat energy and chemical auxiliaries is improved, the use of water is reduced by more than 65%, the consumption of energy sources is reduced by more than 70%, and the use of the chemical auxiliaries is reduced by more than 40%. The invention not only recycles water and chemical auxiliary agents, but also recycles a large amount of heat energy, realizes the recycling of resources, reduces the consumption and the emission of water resources from the source, reduces the use and the emission of the chemical auxiliary agents, reduces the consumption of energy, and belongs to the energy-saving emission-reducing, water-saving consumption-reducing and clean production process.
Drawings
FIG. 1 is a structural block diagram of a recycling device of the cotton fabric desizing solution in an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
The first embodiment is as follows:
the embodiment provides a recycling method of a cotton fabric bleaching solution, which mainly recycles three kinds of water (boiling and bleaching high-temperature water, warm water and normal-temperature water) in a cotton fabric degreasing and bleaching process.
The method comprises the following specific steps:
(1) recycling the boiling and bleaching high-temperature water: leading the high-temperature water subjected to degreasing and bleaching in the first scouring and bleaching machine into a second scouring and bleaching machine through a driving pump, wherein the second scouring and bleaching machine is in a state to be scoured and bleached; after the second boiling and bleaching machine introduces the high-temperature water, 10% -20% of fresh water is supplemented, for example 15% of fresh water is supplemented; supplementing chemical auxiliaries after the temperature in the pot of the second scouring and bleaching machine is reduced to 70-80 ℃, wherein the chemical auxiliaries mainly comprise a refining agent, an alkaline agent and 20-90% of hydrogen peroxide, and the added chemical auxiliaries are mixed with the chemical auxiliaries introduced into high-temperature water for use; and (3) after the chemical auxiliary agent is supplemented, heating, boiling and bleaching, and after the boiling and bleaching, introducing high-temperature water into the first boiling and bleaching machine for recycling or into a first storage tank for later use. And (4) adding fresh water and chemical additives according to the steps to the boiling and bleaching high-temperature water circulated to the first boiling and bleaching machine, and then heating and bleaching for 2-5 times. And the high-temperature water introduced into the first storage tank is used for boiling and bleaching of the next batch.
(2) And (3) recycling warm water: guiding the warm water after the hot water washing in the first scouring and bleaching machine into a second scouring and bleaching machine through a driving pump, wherein the second scouring and bleaching machine is in a state of waiting for hot water washing; after the second boiling and bleaching machine is introduced with warm water, 10 to 20 percent of fresh water is supplemented, for example 15 percent of fresh water is supplemented; and (3) after enough fresh water is supplemented, heating to hot water, carrying out hot water cleaning, introducing the warm water after the hot water cleaning into the first scouring and bleaching machine for recycling, or introducing into the second storage tank for standby, and similarly, supplementing the fresh water and heating for cleaning by the first scouring and bleaching machine, and circulating for 2-5 times. And the warm water introduced into the second storage tank is used for the next batch of hot water washing.
(3) And (3) recycling normal-temperature water: leading the normal-temperature water after being washed by the normal-temperature water in the first scouring and bleaching machine into a second scouring and bleaching machine through a driving pump, wherein the second scouring and bleaching machine is in a state of being washed by the normal-temperature water; after the second boiling and bleaching machine is introduced with the water at normal temperature, 10 to 20 percent of fresh water is supplemented, for example, 15 percent of fresh water is supplemented; and (3) after sufficient fresh water is supplemented, normal-temperature water washing is directly carried out, the washed normal-temperature water is led into the first scouring and bleaching machine for recycling, or is led into a third storage tank for standby, the first scouring and bleaching machine also carries out fresh water supplementing and washing, and the circulation is carried out for 2-5 times. And the normal temperature water introduced into the third storage tank is used for cleaning the next batch of normal temperature water.
The above-mentioned is the respective recycling method of three kinds of water of boiling and bleaching high-temperature water, warm water and normal atmospheric temperature water, in order to utilize warm water and normal atmospheric temperature water better, the warm water of supplementing and using after 5 times of recycling of boiling and bleaching high-temperature water, and the warm water of supplementing and using after 5 times of recycling of warm water, and the normal atmospheric temperature water is changed new soft water after 5 times of recycling of normal atmospheric temperature water.
In other embodiments, the respective cycle times of the three types of water, i.e., the boiling and bleaching high-temperature water, the warm water and the normal-temperature water, can be adjusted according to the usage amount of each time, for example, if the usage amount of each time is small, the boiling and bleaching high-temperature water is recycled for 3 times and then the recycled warm water is replenished, the warm water is recycled for 3 times and then the recycled normal-temperature water is replenished, and the normal-temperature water is recycled for 3 times and then is replaced with new soft water.
The recycling method of cotton fabric bleaching liquid provided by this embodiment, because boil and float high-temperature water, warm water and normal atmospheric temperature water respectively used cyclically in the cotton fabric degreasing bleaching process, and the warm water still can be retrieved in the high-temperature boiling bleaching process, normal atmospheric temperature water still can be retrieved in the warm water cleaning process, thereby make and boil and float high-temperature water, warm water and normal atmospheric temperature water obtain abundant recycle, the water resource has been improved, the cyclic utilization efficiency of heat energy and chemical auxiliary agent, reduce the use of water more than 65%, reduce the consumption of the energy more than 70%, reduce the use of chemical auxiliary agent more than 40%. The invention not only recycles water and chemical auxiliary agents, but also recycles a large amount of heat energy, realizes the recycling of resources, reduces the consumption and the emission of water resources from the source, reduces the use and the emission of the chemical auxiliary agents, reduces the consumption of energy, and belongs to the energy-saving emission-reducing, water-saving consumption-reducing and clean production process.
Example two:
the embodiment provides a recycling device of a cotton fabric bleaching solution, which is used for realizing the recycling method of the cotton fabric bleaching solution in the first embodiment.
As shown in fig. 1, the recycling device of the cotton fabric bleaching solution of the embodiment mainly includes a first scouring and bleaching machine 1, a second scouring and bleaching machine 2, a first storage tank 3, a second storage tank 4 and a third storage tank 5, the first scouring and bleaching machine 1 and the second scouring and bleaching machine 2 are used for degreasing and bleaching cotton fabrics, and are connected through a pipeline, and the scouring and bleaching high-temperature water, the warm water and the normal-temperature water generated by the first scouring and bleaching machine 1 and the second scouring and bleaching machine 2 can be recycled. The first boiling and bleaching machine 1 and the second boiling and bleaching machine 2 are also connected with a sewage treatment plant 6 and are used for discharging the bleaching-removing liquid which is circulated for many times into the sewage treatment plant 6 for recycling treatment.
The cyclic utilization device of cotton fabric decolour liquid of this embodiment still includes a plurality of driving pump (not shown in the figure), and a plurality of driving pump is installed respectively and is boiled and float between machine 1 and the second machine 2 that boils that floats to first storage jar 3, second storage jar 4 and third storage jar 5 and first boil and float between machine 1 and the second machine 2 that boils and float, and the driving pump is used for driving first boil and float machine 1 and the second boil and float and boil and float high-temperature water, warm water and normal atmospheric temperature water between machine 2 and guide into each other. The method specifically comprises the following steps: the driving pump is used for first storage jar 3 to boil respectively with first boil and float machine 1 or the second boil and float machine 2 boil and float high-temperature water leading-in each other, and the driving pump is used for second storage jar 4 to boil respectively with first boil and float machine 1 or the second boil and float machine 2 warm water leading-in each other, and the driving pump is used for third storage jar 5 to boil respectively with first boil and float machine 1 or the second boil and float machine 2 normal atmospheric temperature water leading-in each other.
The first machine 1 and the second of boiling and bleaching of this embodiment boils and floats and all installs devices such as heating device, water level display, pressure measurement device and thermometer, and heating device is used for heating the liquid that floats that takes off, and the thermometer is to taking off the liquid temperature that floats and monitor. First storage jar 3, second storage jar 4 and third storage jar 5 have the heat preservation effect, can effectively keep boiling the temperature of floating high temperature water and warm water.
This embodiment provides cotton fabric takes off cyclic utilization device that floats liquid, owing to be equipped with first boil and float machine 1, the second boils and floats machine 2, first storage jar 3, second storage jar 4 and third storage jar 5, thereby first boil and float machine 1 and second boil and float machine 2 can realize that cyclic utilization boils and floats high-temperature water, warm water and normal atmospheric temperature water, thereby the water resource has been improved, the cyclic utilization efficiency of heat energy and chemical auxiliary agent, reduce the use of water more than 65%, reduce the consumption of the energy more than 70%, reduce the use of chemical auxiliary agent more than 40%. The invention not only recycles water and chemical auxiliary agents, but also recycles a large amount of heat energy, realizes the recycling of resources, reduces the consumption and the discharge of water resources from the source, reduces the use and the discharge of the chemical auxiliary agents and reduces the consumption of energy.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (8)
1. A recycling method of a cotton fabric bleaching solution is characterized by comprising the following steps:
recycling the boiling and bleaching high-temperature water: introducing the high-temperature water subjected to degreasing and bleaching in the first scouring and bleaching machine into a second scouring and bleaching machine, sequentially supplementing fresh water and chemical auxiliary agents, heating for scouring and bleaching, introducing the high-temperature water subjected to scouring and bleaching into the first scouring and bleaching machine for recycling, and introducing the high-temperature water subjected to scouring and bleaching into a first storage tank for later use after recycling;
and (3) recycling warm water: guiding the warm water subjected to hot water washing in the first scouring and bleaching machine into a second scouring and bleaching machine, supplementing fresh water, heating and washing with hot water, guiding the warm water subjected to hot water washing into the first scouring and bleaching machine for recycling, and guiding the warm water into a second storage tank for later use after recycling;
and (3) recycling normal-temperature water: introducing the normal-temperature water washed by the normal-temperature water in the first scouring and bleaching machine into a second scouring and bleaching machine, supplementing fresh water, introducing the normal-temperature water washed by the normal-temperature water into the first scouring and bleaching machine for recycling, and introducing the normal-temperature water into a third storage tank for later use after recycling;
wherein, boil and float high-temperature water circulation and retrieve and use after a plurality of times the warm water that the second storage jar was retrieved, warm water circulation retrieves and uses after a plurality of times the normal atmospheric temperature water of third storage jar recovery, the soft water of renewal after a plurality of times is retrieved in the normal atmospheric temperature water circulation.
2. The recycling method of the cotton fabric bleaching solution according to claim 1, wherein the boiling and bleaching high-temperature water, the warm water and the normal-temperature water are recycled for 2-5 times respectively, the boiling and bleaching high-temperature water is recycled for 5 times and then the recycled warm water is replenished, the warm water is recycled for 5 times and then the recycled normal-temperature water is replenished, and the normal-temperature water is recycled for 5 times and then is replaced with new soft water.
3. The recycling method of the cotton fabric desizing solution according to claim 2, characterized in that 10% -20% of fresh water is supplemented in each recycling process of the boiling and bleaching high-temperature water, the warm water and the normal-temperature water.
4. The recycling method of the cotton fabric bleaching solution according to claim 3, wherein in the recycling process of the boiling and bleaching high-temperature water, after 10% -20% of fresh water is supplemented, chemical additives are supplemented after the temperature in the pot is reduced to 70-80 ℃.
5. The recycling method of the cotton fabric bleaching solution according to claim 4, wherein the chemical auxiliary agents for recycling and supplementing the scouring and bleaching high-temperature water comprise a refining agent, an alkaline agent and 20-90% of hydrogen peroxide.
6. The recycling device of the cotton fabric bleaching liquid is characterized by comprising a first boiling and bleaching machine, a second boiling and bleaching machine, a first storage tank, a second storage tank and a third storage tank, wherein the first boiling and bleaching machine and the second boiling and bleaching machine are connected with each other through pipelines; the recycling method of the cotton fabric bleaching solution according to any one of claims 1 to 5 is adopted for use.
7. The recycling device of the cotton fabric bleaching solution according to claim 6, further comprising a plurality of driving pumps respectively installed between the first bleaching machine and the second bleaching machine, and between the first storage tank, the second storage tank, the third storage tank, and the first bleaching machine and the second bleaching machine, for driving and conveying the bleaching high-temperature water, the warm water, and the normal-temperature water.
8. The recycling device of the cotton fabric bleaching solution according to claim 6, wherein the first scouring and bleaching machine and the second scouring and bleaching machine are respectively provided with a heating device, a water level display, a pressure detection device and a thermometer.
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| CN104178957A (en) * | 2014-08-08 | 2014-12-03 | 青岛利康源医疗器械有限公司 | Medical gauze bleaching and rinsing wastewater recovery use process |
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| CN104846576A (en) * | 2015-04-28 | 2015-08-19 | 青岛大学 | Heat preservation technology for continuous dip bleaching stage of one bath one step method for cotton fabric and cotton blended fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900408A (en) * | 2010-06-21 | 2010-12-01 | 海盐海利环保纤维有限公司 | Hot water circulating and exchanging device using afterheat |
| CN103061071A (en) * | 2011-10-20 | 2013-04-24 | 南通东方脱脂纱布有限公司 | Hot water circulation device for production of medical absorbent gauze |
| CN104178957A (en) * | 2014-08-08 | 2014-12-03 | 青岛利康源医疗器械有限公司 | Medical gauze bleaching and rinsing wastewater recovery use process |
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