Alcohol fermentation waste liquid heat pump concentration process and device therefor

A technology of alcohol fermentation and bad liquid, which is applied in the direction of steam pressure evaporation, heating water/sewage treatment, food industry wastewater treatment, etc. It can solve the problems of maintaining the vacuum degree of the system and large energy consumption, and achieve the reduction of total water volume and cost reduction Effect

Inactive Publication Date: 2009-06-03
XI AN JIAOTONG UNIV
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the disadvantages of large energy consumption and the need to maintain the vacuum degree of the system when using the multi-effect evaporation method for traditional distiller's grains, and adopt heat pump technology to reuse the secondary steam generated by evaporation, thereby providing an energy-saving and environmental protection Alcoholic fermentation lees heat pump concentration process and its device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alcohol fermentation waste liquid heat pump concentration process and device therefor
  • Alcohol fermentation waste liquid heat pump concentration process and device therefor
  • Alcohol fermentation waste liquid heat pump concentration process and device therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 It is the downstream feeding type alcohol fermentation lees heat pump concentration device and process diagram of the present invention, the overall flow direction of the lees is consistent with the flow direction of the heating steam, that is, the lees with low concentration and temperature first pass through the high-pressure evaporator 1, and then pass through The low-pressure evaporator 2, while the high-temperature heating steam heats the high-pressure evaporator 1, and the low-temperature heating steam heats the low-pressure evaporator 2. Such as figure 1 As shown, the bad liquid delivery pipeline is connected to the inlet port of the inlet pressure regulating valve 8, the outlet port of the inlet pressure regulating valve 8 is connected to the lower feed liquid inlet port of the high-pressure evaporator 1 through a pipeline, and the upper feed liquid outlet port of the high-pressure evaporator 1 passes through The pipeline is connected to the inlet end ...

Embodiment 2

[0032] figure 2 It is the countercurrent feeding type alcohol fermentation grain liquid heat pump concentration device and process diagram of the present invention. The overall flow direction of the waste liquid is opposite to the flow direction of the heating steam, that is, the bad liquid with low concentration and temperature first passes through the low-pressure evaporator 2, and then passes through the high-pressure evaporator 2. Evaporator 1, therefore, what is heated by the heating steam with high temperature is the bad liquor with high concentration. Such as figure 2 As shown, the bad liquid conveying pipeline is connected to the inlet port of the inlet pressure regulating valve 8, the outlet port of the inlet pressure regulating valve 8 is connected to the lower feed liquid inlet port of the low-pressure evaporator 2 through a pipeline, and the upper feed liquid outlet port of the low-pressure evaporator 2 passes through The pipeline is connected to the inlet end o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
freezing pointaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses an alcohol waste liquid heat pump concentration process and a device therefore. The device mainly comprises a high pressure evaporator, a low pressure evaporator, a high pressure gas-liquid separator, a low pressure gas-liquid separator and a heat pump compressor; the high pressure and the low pressure evaporators are connected with each other in series in sequence; secondary steam produced by the evaporation of feed liquor in the high pressure evaporator is taken as a heating thermal resource for feed liquor in the low pressure evaporator; secondary steam produced by the evaporation of the feed liquor in the low pressure evaporator is taken as a heating thermal resource for the feed liquor in the high pressure evaporator after being pressurized by the heat pump compressor; and except that a certain amount of boiler steam is required for the start-up in the initial stage and to ensure the normal operation of the heat pump compressor only a certain amount of electrical or mechanical work is required after normal operation, the whole system can operate without other energy from outside. Compared with the multiple effect evaporation technology, the invention has the following advantages: the evaporation of water in waste liquid per unit mass requires less energy consumption; a vacuum pump needs not to be arranged; and meanwhile, the amount of condensed water reduces to some degree, so that the purpose of saving energy and protecting the environment during alcohol production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of alcohol production, and relates to a process and a device for processing alcoholic fermentation feed liquid, in particular to a heat pump concentration process and a device for alcoholic fermentation lees. Background technique [0002] Alcohol is a colorless, transparent, volatile, flammable, non-conductive liquid with the smell of wine and a pungent spicy taste, slightly sweet, its scientific name is ethanol, and its molecular formula is C 2 h 5 OH, because its chemical molecular formula contains hydroxyl, it is called ethanol, its specific gravity is 0.7893, its freezing point is -117.3°C, and its boiling point is 78.2°C. An azeotropic mixture is formed with an azeotropic point of 78.15°C. The mixture of ethanol vapor and air can cause explosion, and the explosion limit concentration is 3.5-18.0%. Alcohol solution has a strong killing effect on bacteria when the concentration is 70%. It can also be u...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/28C02F1/04C02F103/32
Inventor 顾兆林冯诗愚刘建文李云高秀峰
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap