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Method for utilizing boiler waste gas in fermentation alcohol production

A technology for fermenting alcohol and boiler waste gas, which is applied in the direction of separation methods, chemical instruments and methods, and the use of liquid separation agents, etc., which can solve the problems of exhaust gas, reduce production costs, realize recycling, and save water resource fees.

Inactive Publication Date: 2015-10-28
太仓意发石化矿材检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant patent literature on the utilization of exhaust gas in this aspect.

Method used

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  • Method for utilizing boiler waste gas in fermentation alcohol production

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Embodiment 1

[0035] A method for utilizing boiler waste gas in fermented alcohol production, comprising the following steps:

[0036] (1) Alcohol wastewater treatment: The alcohol wastewater produced in the fermentation alcohol production process is treated, and the combined treatment method of high temperature anaerobic fermentation, medium temperature UASB anaerobic fermentation and normal temperature SBR aerobic fermentation is adopted until the COD in the wastewater is ≤100 mg / L, specifically include the following steps:

[0037] (a): Carry out high-temperature contact anaerobic fermentation of the produced alcohol wastewater, the fermentation temperature is 55°C, and the closed fermentation time is 8 days. It is necessary to carry out a cycle of stirring, stirring for 2 hours each time. After the fermentation cycle, the pH value of the water needs to be detected. If the pH is lower than 7.0, the fermentation time should be extended until the pH is greater than 7.0 to ensure that the a...

Embodiment 2

[0049] A method for utilizing boiler waste gas in fermented alcohol production, comprising the following steps:

[0050] (1) Alcohol wastewater treatment: The alcohol wastewater produced in the fermentation alcohol production process is treated, and the combined treatment method of high temperature anaerobic fermentation, medium temperature UASB anaerobic fermentation and normal temperature SBR aerobic fermentation is adopted until the COD in the wastewater is ≤100 mg / L, specifically include the following steps:

[0051] (a): Carry out high-temperature contact anaerobic fermentation on the produced alcohol wastewater, the fermentation temperature is 58°C, and the closed fermentation time is 9 days. It is necessary to carry out a cycle of stirring, stirring for 2 hours each time. After the fermentation cycle, the pH value of the water needs to be detected. If the pH is lower than 7.0, the fermentation time should be extended until the pH is greater than 7.0 to ensure that the a...

Embodiment 3

[0063] A method for utilizing boiler waste gas in fermented alcohol production, comprising the following steps:

[0064] (1) Alcohol wastewater treatment: The alcohol wastewater produced in the fermentation alcohol production process is treated, and the combined treatment method of high temperature anaerobic fermentation, medium temperature UASB anaerobic fermentation and normal temperature SBR aerobic fermentation is adopted until the COD in the wastewater is ≤100 mg / L, specifically include the following steps:

[0065] (a): Carry out high-temperature contact anaerobic fermentation of the produced alcohol wastewater, the fermentation temperature is 60°C, and the closed fermentation time is 10 days. It is necessary to carry out a cycle of stirring, stirring for 2 hours each time. After the fermentation cycle, the pH value of the water needs to be detected. If the pH is lower than 7.0, the fermentation time should be extended until the pH is greater than 7.0 to ensure that the ...

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Abstract

The invention provides a method for utilizing boiler waste gas in fermentation alcohol production. The method comprises the following steps that alcohol waste water is treated, the boiler waste gas with sulphur is enriched, and SBR water is acidized; the SBR water is blended, and the blended water is used for an alcohol fermentation process. A circular economy standardization system of waste gas and waste water treatment resource comprehensive utilization is built, natural resources and secondary energy are utilized reasonably through comprehensive utilization of resources, energy saving, consumption reducing and water saving, most rationalization of utilization of natural resources and energy is achieved, and emissions of waste and pollutant are reduced.

Description

technical field [0001] The invention relates to a method for utilizing boiler waste gas in fermented alcohol production, belonging to the field of alcohol production. Background technique [0002] In alcohol production, water is an important raw material. According to different raw materials (cassava, corn, barley and rice, etc.), the proportion of water added varies, generally about 3 times the total amount of raw materials. Taking an alcohol factory with an annual output of 80,000 tons as an example, the annual consumption of process water is more than 1 million cubic meters, and the annual production of alcohol wastewater is about 1.3 million cubic meters. [0003] The fermented alcohol industry is a traditional industry with high energy consumption, high pollution, low output and low benefit. In order to save resources and improve the comprehensive utilization of resources, my country also has clear requirements for the resource consumption indicators of the alcohol ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D47/00C02F9/14C02F103/32
Inventor 曹喜焕邬淑英茅伟刚陈霞封君兴
Owner 太仓意发石化矿材检测有限公司
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