Control method and system for wet method leather manufacturing

A drying system and wet process technology, applied in drying solid materials, drying gas arrangement, drying and other directions, can solve the problems of low heat recovery rate of heat transfer oil, unsatisfactory drying, poor surface quality, etc., to improve the surface quality, Good production demand, timely control effect

Active Publication Date: 2015-09-16
SHAANXI UNIV OF SCI & TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct use of hot air to dry makes the surface of the base cloth uneven and poor in surface quality
The heat transfer oil used at the same time is flammable and explosive, and has poor safety; the heat transfer oil has a small heat recovery rate and consumes a lot of energy
Therefore, in terms of the surface quality of the base fabric, energy saving and safety issues, it is not ideal to use heat transfer oil to heat the cold air and only use an oven to dry the base fabric with hot air.

Method used

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  • Control method and system for wet method leather manufacturing
  • Control method and system for wet method leather manufacturing
  • Control method and system for wet method leather manufacturing

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Embodiment Construction

[0028] The invention will be further described below in conjunction with the accompanying drawings.

[0029] see figure 1 , a wet-process tanning drying system includes a high-temperature heat exchanger 1, a medium-temperature heat exchanger 2, and a drying cylinder group 3, and the drying cylinder group 3 includes a plurality of drying cylinders 22, and the high-temperature heat exchanger 1 and the medium-temperature heat exchanger 2 tubes One end of the valve is connected to the steam pipe through the high temperature valve 11 and the medium temperature valve 12 respectively, and the other end is respectively connected to the first flash tank 4 and the second flash tank 5, and one end of the shell side of the high temperature heat exchanger 1 and the medium temperature heat exchanger 2 is connected Connect the cold air pipe, the other end is connected to the hot air pipe, the steam outlet of the first flash tank 4 is connected to the medium temperature heat exchanger 2, the ...

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Abstract

The invention discloses a control method and a system for wet method leather manufacturing. By means of combination of hot air dying and drying-cylinder drying, base cloth is subjected to hot pressing and ironing at low temperature to improve surface quality of the base cloth; by means of three-section steam supply, trapezoidal utilization of energy is realized, fresh steam consumption is reduced while base cloth is dried, so that energy saving and consumption reduction are realized; the problem of safety in heating of conduction oil is solved by adoption of steam; by a multi-section heat supply control system, heat of steam condensate can be recycled completely, so that energy saving and consumption reduction are realized; owing to design of the control system, automatic production of a drying section is realized; in addition, adjustment of steam quantity according to operating conditions is realized so as to meet production requirements of different synthetic leather techniques.

Description

technical field [0001] The invention belongs to the technical field of leather manufacturing, and in particular relates to a wet tanning drying system and a control method. Background technique [0002] Synthetic leather is the best substitute for natural leather. At present, the wet production process of PU synthetic leather is to impregnate, scrape, solidify, wash the base material once, and then dry it with hot air to obtain the finished product. Among them, the purpose of drying is to adjust the morphology and structure of the base cloth by drying to remove the moisture in the base cloth while setting the base cloth. The traditional base cloth drying device is an oven, and the heat source used is the hot air formed by heating the cold air with heat transfer oil. The hot air blows and dries the wet base cloth in the oven through the hot air circulation system. Direct use of blowing hot air to dry makes the surface of the base cloth uneven and poor in surface quality. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B21/00F26B25/00D06N3/14
CPCY02P70/62
Inventor 汤伟张怡真高祥于东伟
Owner SHAANXI UNIV OF SCI & TECH
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