Medical gauze bleaching high temperature wastewater waste heat recovery process

Abstract

The invention belongs to the technical field of medical gauze processing, and particularly relates to a medical gauze bleaching high temperature wastewater waste heat recovery process. The medical gauze bleaching high temperature wastewater waste heat recovery process comprises the following steps: collecting hot wastewater I discharged at a bleaching section and hot wastewater II discharged in temperature rising water washing, collecting to a hot wastewater tank through a special pipeline, opening a control valve #1, enabling the hot wastewater I discharged at the bleaching section and the hot wastewater II discharged in temperature rising to enter the hot wastewater tank, then to enter a heat exchanger through a #4 pump, and to be discharged a cold wastewater tank after the heat is recovered, meanwhile starting the #4 pump, opening control valves #5 and #6, infiltrating cold soft water into the heat exchanger to absorb heat of the hot wastewater, and then discharging into a hot soft water tank. The medical gauze bleaching high temperature wastewater waste heat recovery process has the benefits that the steam use amount is reduced, the cost is reduced, better social benefit is achieved, energy conservation and emission reduction are realized, the hot water heated by recovered waste heat is used for bleaching and hot water rinsing, the bleaching time is shortened, and the production efficiency is improved.

Description

[0001] technical field [0002] The invention belongs to the technical field of medical gauze processing, and in particular relates to a waste heat recovery process of medical gauze bleaching high-temperature wastewater. Background technique [0003] Gauze is a kind of cotton fabric with sparse warp and weft. Pure cotton medical gauze needs to be bleached. The bleaching process of pure cotton medical gauze: pre-washing-bleaching-washing-neutralization-washing-PH value adjustment, the current equipment used in the same industry does not have Recycling function, especially the heat recovery between 30-90 degrees, although the recovery of bleaching waste heat has high economic benefits, but the investment is large and the operation control is complicated, so the current industry is basically high-temperature direct discharge, resulting in energy waste. Contents of the invention [0004] In order to make up for the defects of the prior art, the present invention provides a me...

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Problems solved by technology

[0003] Gauze is a kind of cotton fabric with sparse warp and weft. Pure cotton medical gauze needs to be bleached. The bleaching process of pure cotton medical gauze: pre-washing-bleaching-washing-neutralization-washing-PH value adjustment, the current equipment used in the same industry does not have Recycling function, especially the heat recovery between 30-90 degrees, although the economic benefit of bleaching waste heat recovery is high, but the investment is large, and the operation control is complicated, so the current industry is basically high-temperature direct discharge, resulting in energy waste

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