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Cane sugar factory waste water zero discharge process

A zero-emission, cane sugar technology, applied in supplementary water supply, water shower coolers, preheating, etc., can solve the problems of large water consumption, high energy consumption, waste water pollution, etc., save production water, and achieve significant economic and social benefits. Effect

Inactive Publication Date: 2008-09-17
陈志强
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  • Claims
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method that utilizes the water content of sugarcane itself to solve the problems of large water consumption, high energy consumption, and serious wastewater pollution in sugar factories, so as to achieve zero discharge of wastewater

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  • Cane sugar factory waste water zero discharge process
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Embodiment Construction

[0012] In the method for zero discharge of waste water from sugarcane sugar factories of the present invention, Fig. 1 shows that the production water is derived from the condensed water formed by the self-moisture of sugarcane. In this measurement, the daily squeezed sugarcane amount is 154 tons / hour, and the average water content of sugarcane is 70 % of the cases, the condensed water flow rate is about 107.8t / h, and these waters can completely replace fresh water after treatment, meeting the production water requirements.

[0013] The water entering the boiler comes from condensate water, the flow rate is about 69.3t / h, the flow rate back to the condensate water is about 60.06t / h, and the intermediate loss is 9.24t / h. Nanxu Sugar Factory adopts new high-efficiency corrugated juice catcher technology to transform the evaporation I effect and II effect juice catcher, which reduces the sugar content of the condensate water, so that the sugar content of the I effect and II effect...

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Abstract

The invention relates to a method of waste water zero draining for a cane sugar factory, comprising: using the condensed water form sugar boiling process and evaporation process as processes water of the whole factory; except for part of processes hot water, the rest condensate is cooled from about 80 deg C to room temperature and using in stead of new water; smelting washing tank water adopts a decontamination distributary system to process cleaning and shunting for wash-water of a heater, the wash-water of an evaporating pot and boiling tank water, and shunted clean water is used as washing water of an filter bottle of a pressure filter and pressing osmotic water, and sewage is drained into an ash-flushing water circulating system; the ash-flushing water adopts a gallet water curtain dust collector and a residue water separator to make up a closed-circulating system. The invention makes use of self-water of the cane to implement a closed-circulating production, so as to save a plurality of process water and realize the waste water zero draining to make economic and social benefits very remarkable.

Description

technical field [0001] The invention belongs to the method field of zero discharge of waste water from sugarcane sugar factories. Background technique [0002] Most cane sugar factories need to use a lot of new water during the crushing period, and the large amount of waste water discharged by them has become one of the main sources of pollution. If water recycling is not implemented, the sugar factory needs to use more than 10 tons of new water for each ton of sugar cane produced. In recent years, my country's sugarcane sugar factories have undergone technical transformation and have realized partial water recycling. For example, the first and second effect evaporative condensed water is recycled as boiler water, and the condensed water for evaporation, sugar cooking, vacuuming, and steam is partially recycled. The water used for boiler dust removal and water washing ash is also partially recycled. After adopting the above measures, about 50-60% of the production water cons...

Claims

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Application Information

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IPC IPC(8): F28C1/00F22D11/06
Inventor 陈志强
Owner 陈志强
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