Reuse Technology of Molasses Alcohol Wastewater
A technology of molasses alcohol wastewater and molasses alcohol, which is applied in the field of reuse technology of molasses alcohol wastewater, can solve the problems of waste liquid flowing into rivers, death of sugarcane plants, and aggravated environmental pollution, and achieve safe and reliable maintenance, high heat utilization rate, moisture low effect
Active Publication Date: 2019-07-23
GUANGXI JINSUI ECOLOGICAL TECH CO LTD
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Problems solved by technology
This treatment method also has a hidden danger, that is, if the dosage and concentration are not appropriate, not only the sugarcane plants will die, but the waste liquid will also flow into rivers, which will aggravate the pollution of the environment.
Method used
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Embodiment 1
[0043] A kind of reuse process of molasses alcohol waste water, comprising:
[0044] Step 1. Concentration: Concentrate the alcohol waste water from 8-12°BX to 60-65°BX by using the residual heat of the distillation tower of the alcohol factory to obtain molasses alcohol concentrated waste liquid;
[0045] Step 2, heating up: heating the furnace body (hot blast stove) to above 600°C with pulverized coal;
[0046] Step 3. Incineration: When the furnace temperature in the furnace body reaches above 600°C, spray molasses alcohol concentrated waste liquid into the furnace chamber of the furnace body, stop putting coal powder into the furnace body after the molasses alcohol concentrated waste liquid burns normally, and only spray and burn molasses Concentrate the waste liquid with alcohol, and then keep the furnace temperature at 800°C;
[0047] Step 4. Drying: Use a high-pressure fan and an induced draft fan to collect the high-temperature flue gas generated by the spraying and bur...
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Abstract
The invention discloses a recycling technology of molasses alcohol wastewater. The recycling technology comprises the following steps: (I) concentration: concentrating the alcohol wastewater to 60-65-degree BX from 8-12-degree BX by the waste heat of an alcohol plant distillation column to obtain molasses alcohol concentrate waste liquid; (II) heating: heating the furnace body to over 600 DEG C by pulverized coal; (III) burning: when the furnace temperature in the furnace body exceeds 600 DEG C, spraying the molasses alcohol concentrate waste liquid into the hearth of the furnace body, after the molasses alcohol concentrate waste liquid is normally burnt, stopping adding the pulverized coal into the furnace body while only performing spray burning of the molasses alcohol concentrate waste liquid, and then, always controlling the furnace temperature at 700-1,000 DEG C; and (IV) drying: drying the wet filtered mud with water content of 70% by the high-temperature flue gas generated by the spray burning of the molasses alcohol concentrate waste liquid, wherein the wet filtered mud is a byproduct of cane sugar production. The heat energy utilization rate of the molasses alcohol concentrate waste liquid is higher; and moreover, the tail gas only contains water vapor and does not cause pollution, and the ash can be recycled relatively well to avoid secondary pollution.
Description
technical field [0001] The invention relates to a recycling process of molasses alcohol wastewater. Background technique [0002] Molasses alcohol wastewater refers to the waste liquid that uses sugarcane molasses as raw material, the fermented mash is distilled in the alcohol crude distillation tower, and is discharged from the bottom of the crude distillation tower after the alcohol is distilled. The way alcohol is produced is different, and the amount and concentration of waste liquid produced are also different. Using atmospheric tower distillation, 1 ton of alcohol is produced to produce 13 to 15 tons (14 tons on average) of waste liquid, with a concentration of 8 to 12°BX (BX ), the use of differential pressure distillation (or atmospheric tower plus reboiler) to produce a ton of alcohol produces 11 to 13 tons of waste liquid, and the concentration is 15.50 to 16.80 ° BX, which is 21% less than the amount of waste water used in atmospheric distillation. [0003] Molas...
Claims
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IPC IPC(8): C02F1/04C02F1/02F23G7/04C05D9/00C05F7/00C02F103/32
CPCC02F1/02C02F1/04C02F2103/325C05D9/00C05F7/00F23G7/04Y02A40/20Y02P20/129
Inventor 邓卫忠周义
Owner GUANGXI JINSUI ECOLOGICAL TECH CO LTD