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Three-dimensional hollow structure heat collecting evaporation fabric and preparation and using methods and application thereof

A three-dimensional hollow, heat-collecting technology, applied in fabrics, multi-strand fabrics, textiles, and papermaking, can solve the problems of high device cost, low water recovery rate, and low desalination efficiency, and achieve high water evaporation efficiency and good heat insulation and water conductivity, the effect of short process flow

Inactive Publication Date: 2018-06-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-stage flash evaporation technology in the distillation method consumes a lot of power and the operation flexibility of the equipment is small. The low-temperature multi-effect distillation equipment of the multi-effect distillation technology has a large volume and high equipment cost
The electrodialysis method has a simple process and a high desalination rate, but the water recovery rate is low, the team has no ability to remove uncharged substances, and consumes a lot of energy, so it is not suitable for large-scale seawater desalination projects
The reverse osmosis method requires a "semi-permeable membrane" with selective permeation performance. The lifespan and anti-pollution problems of the membrane cannot be effectively solved. The reverse osmosis membrane, high-pressure pump, and energy recovery device need to be replaced regularly
[0004] The above technologies mainly use thermal energy and electric energy as energy sources for seawater desalination, and the desalination efficiency is not high, the equipment is complicated, and the desalination process is slow. Obviously, to achieve large-scale seawater desalination, it is first necessary to seek more reliable and economical new energy sources

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Three-dimensional hollow structure heat collecting evaporation fabric and preparation and using methods and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Three-dimensional hollow structure heat collecting and evaporating fabric of cotton fiber

[0035] combine figure 1 , select the polyethylene fiber of 1000tex as F layer warp yarn (floating layer warp yarn 6) and lower floor weft yarn (floating layer weft yarn 7) to weave floating layer 3; Select 20 cotton yarns as hydrophilic fiber and 100D polyester monofilament as supporting fiber, Arranged at intervals and mixed as spacer yarns 8 to weave the heat-insulating and water-conducting layer 2, the fiber root ratio is 1:1; 20 black cotton fibers are selected for air deformation as the upper warp yarn (warp yarn 4 of the heat-collecting and evaporation layer) and the upper weft yarn (collecting and evaporating layer warp yarn 4). The heat evaporation layer weft yarn 5) weaves the heat collection evaporation layer 1. Set fabric width to 10 cm, warp and weft density: 15 threads / cm; spacer yarn density: 15 threads / cm;

[0036] Weaving process: the first step is to activate t...

Embodiment 2

[0038] Three-dimensional hollow structure heat collecting and evaporating fabric of polyester fiber

[0039] The polyethylene fiber of 600tex is selected as the lower warp yarn, and the polypropylene plastic tube (hollowness 80%) closed at both ends with a diameter of 4 mm is used as the weft yarn to weave the floating layer; 1000tex hydrophilic modified polyester bulked yarn is selected as the hydrophilic fiber and 150D The polypropylene monofilament is used as the supporting fiber, which is arranged at intervals and mixed as the spacer yarn to weave the heat-insulating and water-conducting layer, and the fiber root ratio is 1:1; the black 1000tex hydrophilic modified polyester fiber is used as the upper warp yarn and the upper weft yarn weaving set thermally evaporated layer. Set fabric width to 10 cm, warp and weft density: 12 threads / cm; interval yarn density: 12 threads / cm;

[0040] Weaving process: the first step is to activate the weft insertion device to introduce the...

Embodiment 3

[0042] Polypropylene fiber three-dimensional hollow structure heat collection and evaporation fabric

[0043] Use 1000tex polyethylene fiber as the lower warp yarn and lower weft yarn to weave the floating layer; use 1000tex hydrophilic modified polypropylene bulky yarn as the hydrophilic fiber and 150D polypropylene monofilament as the supporting fiber, and arrange them at intervals and mix them as spacer yarns for weaving The thermal insulation and water-conducting layer has a fiber ratio of 1:1; black 1000tex hydrophilic modified polypropylene fiber is selected as the upper warp yarn and the upper weft yarn to weave the heat-collecting evaporation layer. Set fabric width to 10 cm, warp and weft density: 10 threads / cm; spacer yarn density: 10 threads / cm;

[0044] Weaving process: the first step is to activate the weft insertion device to introduce the weft yarns of the upper and lower layers; the second step is to drive the upper and lower warp yarns to interweave synchronousl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a three-dimensional hollow structure heat collecting evaporation fabric which comprises a heat collecting evaporation layer, a heat insulation water conveying layer and a floating layer which are sequentially arranged; the heat insulation water conveying layer adopts spacer yarn, and the heat collecting evaporation layer and the floating layer are bound into a whole of the hollow structure through interweaving. The invention further provides preparation and using methods and application of the three-dimensional hollow structure heat collecting evaporation fabric. The fabric can float on the water surface, water is conveyed to the heat collecting evaporation layer from the floating layer through the heat insulation water conveying layer, and heating and water evaporation are achieved by absorbing heat of sunlight through the heat collecting evaporation layer. The fabric has the three-dimensional integrated structure, is low in mass, high in strength and simple instructure, and can achieve industrialized production; the important application prospect is achieved in the field of seawater desalination and sewage treatment.

Description

technical field [0001] The invention relates to the technical field of new materials, more specifically, to a three-dimensional hollow heat-collecting and evaporating fabric and its preparation, use and application. Background technique [0002] The total amount of fresh water resources on land only accounts for 2.53% of the total amount of water bodies on the earth, and most of the fresh water is frozen in the ice sheets and glaciers of the north and south poles and high mountains, making it difficult to use. The uneven distribution of fresh water resources in time and space and the irrational use of human beings make many areas of the world face a serious crisis of fresh water resources. With the development of the economy, the use of fresh water has increased sharply, and the economic growth, population increase and water pollution have led to a serious shortage of fresh water resources in my country, which has become an important obstacle to the sustainable development o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D03D25/00D03D11/00D03D15/00D03D1/00C02F1/04C02F103/08D03D15/267D03D15/283D03D15/49D03D15/50D03D15/60
CPCD03D1/00D03D11/00D03D15/00D03D25/005C02F1/04D10B2321/021D10B2321/022D10B2331/04D10B2331/02D10B2201/02D10B2201/01D10B2101/06D10B2401/022C02F2103/08D03D15/49D03D15/267Y02A20/124
Inventor 许福军曹艳红葛东升黄梦雯
Owner DONGHUA UNIV
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